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-/**
- * @license
- * Video.js 8.12.0 <http://videojs.com/>
- * Copyright Brightcove, Inc. <https://www.brightcove.com/>
- * Available under Apache License Version 2.0
- * <https://github.com/videojs/video.js/blob/main/LICENSE>
- *
- * Includes vtt.js <https://github.com/mozilla/vtt.js>
- * Available under Apache License Version 2.0
- * <https://github.com/mozilla/vtt.js/blob/main/LICENSE>
- */
-
-(function (global, factory) {
- typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
- typeof define === 'function' && define.amd ? define(factory) :
- (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());
-})(this, (function () { 'use strict';
-
- var version$5 = "8.12.0";
-
- /**
- * An Object that contains lifecycle hooks as keys which point to an array
- * of functions that are run when a lifecycle is triggered
- *
- * @private
- */
- const hooks_ = {};
-
- /**
- * Get a list of hooks for a specific lifecycle
- *
- * @param {string} type
- * the lifecycle to get hooks from
- *
- * @param {Function|Function[]} [fn]
- * Optionally add a hook (or hooks) to the lifecycle that your are getting.
- *
- * @return {Array}
- * an array of hooks, or an empty array if there are none.
- */
- const hooks = function (type, fn) {
- hooks_[type] = hooks_[type] || [];
- if (fn) {
- hooks_[type] = hooks_[type].concat(fn);
- }
- return hooks_[type];
- };
-
- /**
- * Add a function hook to a specific videojs lifecycle.
- *
- * @param {string} type
- * the lifecycle to hook the function to.
- *
- * @param {Function|Function[]}
- * The function or array of functions to attach.
- */
- const hook = function (type, fn) {
- hooks(type, fn);
- };
-
- /**
- * Remove a hook from a specific videojs lifecycle.
- *
- * @param {string} type
- * the lifecycle that the function hooked to
- *
- * @param {Function} fn
- * The hooked function to remove
- *
- * @return {boolean}
- * The function that was removed or undef
- */
- const removeHook = function (type, fn) {
- const index = hooks(type).indexOf(fn);
- if (index <= -1) {
- return false;
- }
- hooks_[type] = hooks_[type].slice();
- hooks_[type].splice(index, 1);
- return true;
- };
-
- /**
- * Add a function hook that will only run once to a specific videojs lifecycle.
- *
- * @param {string} type
- * the lifecycle to hook the function to.
- *
- * @param {Function|Function[]}
- * The function or array of functions to attach.
- */
- const hookOnce = function (type, fn) {
- hooks(type, [].concat(fn).map(original => {
- const wrapper = (...args) => {
- removeHook(type, wrapper);
- return original(...args);
- };
- return wrapper;
- }));
- };
-
- /**
- * @file fullscreen-api.js
- * @module fullscreen-api
- */
-
- /**
- * Store the browser-specific methods for the fullscreen API.
- *
- * @type {Object}
- * @see [Specification]{@link https://fullscreen.spec.whatwg.org}
- * @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}
- */
- const FullscreenApi = {
- prefixed: true
- };
-
- // browser API methods
- const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],
- // WebKit
- ['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']];
- const specApi = apiMap[0];
- let browserApi;
-
- // determine the supported set of functions
- for (let i = 0; i < apiMap.length; i++) {
- // check for exitFullscreen function
- if (apiMap[i][1] in document) {
- browserApi = apiMap[i];
- break;
- }
- }
-
- // map the browser API names to the spec API names
- if (browserApi) {
- for (let i = 0; i < browserApi.length; i++) {
- FullscreenApi[specApi[i]] = browserApi[i];
- }
- FullscreenApi.prefixed = browserApi[0] !== specApi[0];
- }
-
- /**
- * @file create-logger.js
- * @module create-logger
- */
-
- // This is the private tracking variable for the logging history.
- let history = [];
-
- /**
- * Log messages to the console and history based on the type of message
- *
- * @private
- * @param {string} name
- * The name of the console method to use.
- *
- * @param {Object} log
- * The arguments to be passed to the matching console method.
- *
- * @param {string} [styles]
- * styles for name
- */
- const LogByTypeFactory = (name, log, styles) => (type, level, args) => {
- const lvl = log.levels[level];
- const lvlRegExp = new RegExp(`^(${lvl})$`);
- let resultName = name;
- if (type !== 'log') {
- // Add the type to the front of the message when it's not "log".
- args.unshift(type.toUpperCase() + ':');
- }
- if (styles) {
- resultName = `%c${name}`;
- args.unshift(styles);
- }
-
- // Add console prefix after adding to history.
- args.unshift(resultName + ':');
-
- // Add a clone of the args at this point to history.
- if (history) {
- history.push([].concat(args));
-
- // only store 1000 history entries
- const splice = history.length - 1000;
- history.splice(0, splice > 0 ? splice : 0);
- }
-
- // If there's no console then don't try to output messages, but they will
- // still be stored in history.
- if (!window.console) {
- return;
- }
-
- // Was setting these once outside of this function, but containing them
- // in the function makes it easier to test cases where console doesn't exist
- // when the module is executed.
- let fn = window.console[type];
- if (!fn && type === 'debug') {
- // Certain browsers don't have support for console.debug. For those, we
- // should default to the closest comparable log.
- fn = window.console.info || window.console.log;
- }
-
- // Bail out if there's no console or if this type is not allowed by the
- // current logging level.
- if (!fn || !lvl || !lvlRegExp.test(type)) {
- return;
- }
- fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);
- };
- function createLogger$1(name, delimiter = ':', styles = '') {
- // This is the private tracking variable for logging level.
- let level = 'info';
-
- // the curried logByType bound to the specific log and history
- let logByType;
-
- /**
- * Logs plain debug messages. Similar to `console.log`.
- *
- * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
- * of our JSDoc template, we cannot properly document this as both a function
- * and a namespace, so its function signature is documented here.
- *
- * #### Arguments
- * ##### *args
- * *[]
- *
- * Any combination of values that could be passed to `console.log()`.
- *
- * #### Return Value
- *
- * `undefined`
- *
- * @namespace
- * @param {...*} args
- * One or more messages or objects that should be logged.
- */
- const log = function (...args) {
- logByType('log', level, args);
- };
-
- // This is the logByType helper that the logging methods below use
- logByType = LogByTypeFactory(name, log, styles);
-
- /**
- * Create a new subLogger which chains the old name to the new name.
- *
- * For example, doing `videojs.log.createLogger('player')` and then using that logger will log the following:
- * ```js
- * mylogger('foo');
- * // > VIDEOJS: player: foo
- * ```
- *
- * @param {string} subName
- * The name to add call the new logger
- * @param {string} [subDelimiter]
- * Optional delimiter
- * @param {string} [subStyles]
- * Optional styles
- * @return {Object}
- */
- log.createLogger = (subName, subDelimiter, subStyles) => {
- const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter;
- const resultStyles = subStyles !== undefined ? subStyles : styles;
- const resultName = `${name} ${resultDelimiter} ${subName}`;
- return createLogger$1(resultName, resultDelimiter, resultStyles);
- };
-
- /**
- * Create a new logger.
- *
- * @param {string} newName
- * The name for the new logger
- * @param {string} [newDelimiter]
- * Optional delimiter
- * @param {string} [newStyles]
- * Optional styles
- * @return {Object}
- */
- log.createNewLogger = (newName, newDelimiter, newStyles) => {
- return createLogger$1(newName, newDelimiter, newStyles);
- };
-
- /**
- * Enumeration of available logging levels, where the keys are the level names
- * and the values are `|`-separated strings containing logging methods allowed
- * in that logging level. These strings are used to create a regular expression
- * matching the function name being called.
- *
- * Levels provided by Video.js are:
- *
- * - `off`: Matches no calls. Any value that can be cast to `false` will have
- * this effect. The most restrictive.
- * - `all`: Matches only Video.js-provided functions (`debug`, `log`,
- * `log.warn`, and `log.error`).
- * - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.
- * - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.
- * - `warn`: Matches `log.warn` and `log.error` calls.
- * - `error`: Matches only `log.error` calls.
- *
- * @type {Object}
- */
- log.levels = {
- all: 'debug|log|warn|error',
- off: '',
- debug: 'debug|log|warn|error',
- info: 'log|warn|error',
- warn: 'warn|error',
- error: 'error',
- DEFAULT: level
- };
-
- /**
- * Get or set the current logging level.
- *
- * If a string matching a key from {@link module:log.levels} is provided, acts
- * as a setter.
- *
- * @param {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl]
- * Pass a valid level to set a new logging level.
- *
- * @return {string}
- * The current logging level.
- */
- log.level = lvl => {
- if (typeof lvl === 'string') {
- if (!log.levels.hasOwnProperty(lvl)) {
- throw new Error(`"${lvl}" in not a valid log level`);
- }
- level = lvl;
- }
- return level;
- };
-
- /**
- * Returns an array containing everything that has been logged to the history.
- *
- * This array is a shallow clone of the internal history record. However, its
- * contents are _not_ cloned; so, mutating objects inside this array will
- * mutate them in history.
- *
- * @return {Array}
- */
- log.history = () => history ? [].concat(history) : [];
-
- /**
- * Allows you to filter the history by the given logger name
- *
- * @param {string} fname
- * The name to filter by
- *
- * @return {Array}
- * The filtered list to return
- */
- log.history.filter = fname => {
- return (history || []).filter(historyItem => {
- // if the first item in each historyItem includes `fname`, then it's a match
- return new RegExp(`.*${fname}.*`).test(historyItem[0]);
- });
- };
-
- /**
- * Clears the internal history tracking, but does not prevent further history
- * tracking.
- */
- log.history.clear = () => {
- if (history) {
- history.length = 0;
- }
- };
-
- /**
- * Disable history tracking if it is currently enabled.
- */
- log.history.disable = () => {
- if (history !== null) {
- history.length = 0;
- history = null;
- }
- };
-
- /**
- * Enable history tracking if it is currently disabled.
- */
- log.history.enable = () => {
- if (history === null) {
- history = [];
- }
- };
-
- /**
- * Logs error messages. Similar to `console.error`.
- *
- * @param {...*} args
- * One or more messages or objects that should be logged as an error
- */
- log.error = (...args) => logByType('error', level, args);
-
- /**
- * Logs warning messages. Similar to `console.warn`.
- *
- * @param {...*} args
- * One or more messages or objects that should be logged as a warning.
- */
- log.warn = (...args) => logByType('warn', level, args);
-
- /**
- * Logs debug messages. Similar to `console.debug`, but may also act as a comparable
- * log if `console.debug` is not available
- *
- * @param {...*} args
- * One or more messages or objects that should be logged as debug.
- */
- log.debug = (...args) => logByType('debug', level, args);
- return log;
- }
-
- /**
- * @file log.js
- * @module log
- */
- const log$1 = createLogger$1('VIDEOJS');
- const createLogger = log$1.createLogger;
-
- /**
- * @file obj.js
- * @module obj
- */
-
- /**
- * @callback obj:EachCallback
- *
- * @param {*} value
- * The current key for the object that is being iterated over.
- *
- * @param {string} key
- * The current key-value for object that is being iterated over
- */
-
- /**
- * @callback obj:ReduceCallback
- *
- * @param {*} accum
- * The value that is accumulating over the reduce loop.
- *
- * @param {*} value
- * The current key for the object that is being iterated over.
- *
- * @param {string} key
- * The current key-value for object that is being iterated over
- *
- * @return {*}
- * The new accumulated value.
- */
- const toString$1 = Object.prototype.toString;
-
- /**
- * Get the keys of an Object
- *
- * @param {Object}
- * The Object to get the keys from
- *
- * @return {string[]}
- * An array of the keys from the object. Returns an empty array if the
- * object passed in was invalid or had no keys.
- *
- * @private
- */
- const keys = function (object) {
- return isObject$1(object) ? Object.keys(object) : [];
- };
-
- /**
- * Array-like iteration for objects.
- *
- * @param {Object} object
- * The object to iterate over
- *
- * @param {obj:EachCallback} fn
- * The callback function which is called for each key in the object.
- */
- function each(object, fn) {
- keys(object).forEach(key => fn(object[key], key));
- }
-
- /**
- * Array-like reduce for objects.
- *
- * @param {Object} object
- * The Object that you want to reduce.
- *
- * @param {Function} fn
- * A callback function which is called for each key in the object. It
- * receives the accumulated value and the per-iteration value and key
- * as arguments.
- *
- * @param {*} [initial = 0]
- * Starting value
- *
- * @return {*}
- * The final accumulated value.
- */
- function reduce(object, fn, initial = 0) {
- return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial);
- }
-
- /**
- * Returns whether a value is an object of any kind - including DOM nodes,
- * arrays, regular expressions, etc. Not functions, though.
- *
- * This avoids the gotcha where using `typeof` on a `null` value
- * results in `'object'`.
- *
- * @param {Object} value
- * @return {boolean}
- */
- function isObject$1(value) {
- return !!value && typeof value === 'object';
- }
-
- /**
- * Returns whether an object appears to be a "plain" object - that is, a
- * direct instance of `Object`.
- *
- * @param {Object} value
- * @return {boolean}
- */
- function isPlain(value) {
- return isObject$1(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object;
- }
-
- /**
- * Merge two objects recursively.
- *
- * Performs a deep merge like
- * {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges
- * plain objects (not arrays, elements, or anything else).
- *
- * Non-plain object values will be copied directly from the right-most
- * argument.
- *
- * @param {Object[]} sources
- * One or more objects to merge into a new object.
- *
- * @return {Object}
- * A new object that is the merged result of all sources.
- */
- function merge$2(...sources) {
- const result = {};
- sources.forEach(source => {
- if (!source) {
- return;
- }
- each(source, (value, key) => {
- if (!isPlain(value)) {
- result[key] = value;
- return;
- }
- if (!isPlain(result[key])) {
- result[key] = {};
- }
- result[key] = merge$2(result[key], value);
- });
- });
- return result;
- }
-
- /**
- * Returns an array of values for a given object
- *
- * @param {Object} source - target object
- * @return {Array<unknown>} - object values
- */
- function values$1(source = {}) {
- const result = [];
- for (const key in source) {
- if (source.hasOwnProperty(key)) {
- const value = source[key];
- result.push(value);
- }
- }
- return result;
- }
-
- /**
- * Object.defineProperty but "lazy", which means that the value is only set after
- * it is retrieved the first time, rather than being set right away.
- *
- * @param {Object} obj the object to set the property on
- * @param {string} key the key for the property to set
- * @param {Function} getValue the function used to get the value when it is needed.
- * @param {boolean} setter whether a setter should be allowed or not
- */
- function defineLazyProperty(obj, key, getValue, setter = true) {
- const set = value => Object.defineProperty(obj, key, {
- value,
- enumerable: true,
- writable: true
- });
- const options = {
- configurable: true,
- enumerable: true,
- get() {
- const value = getValue();
- set(value);
- return value;
- }
- };
- if (setter) {
- options.set = set;
- }
- return Object.defineProperty(obj, key, options);
- }
-
- var Obj = /*#__PURE__*/Object.freeze({
- __proto__: null,
- each: each,
- reduce: reduce,
- isObject: isObject$1,
- isPlain: isPlain,
- merge: merge$2,
- values: values$1,
- defineLazyProperty: defineLazyProperty
- });
-
- /**
- * @file browser.js
- * @module browser
- */
-
- /**
- * Whether or not this device is an iPod.
- *
- * @static
- * @type {Boolean}
- */
- let IS_IPOD = false;
-
- /**
- * The detected iOS version - or `null`.
- *
- * @static
- * @type {string|null}
- */
- let IOS_VERSION = null;
-
- /**
- * Whether or not this is an Android device.
- *
- * @static
- * @type {Boolean}
- */
- let IS_ANDROID = false;
-
- /**
- * The detected Android version - or `null` if not Android or indeterminable.
- *
- * @static
- * @type {number|string|null}
- */
- let ANDROID_VERSION;
-
- /**
- * Whether or not this is Mozilla Firefox.
- *
- * @static
- * @type {Boolean}
- */
- let IS_FIREFOX = false;
-
- /**
- * Whether or not this is Microsoft Edge.
- *
- * @static
- * @type {Boolean}
- */
- let IS_EDGE = false;
-
- /**
- * Whether or not this is any Chromium Browser
- *
- * @static
- * @type {Boolean}
- */
- let IS_CHROMIUM = false;
-
- /**
- * Whether or not this is any Chromium browser that is not Edge.
- *
- * This will also be `true` for Chrome on iOS, which will have different support
- * as it is actually Safari under the hood.
- *
- * Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching.
- * IS_CHROMIUM should be used instead.
- * "Chromium but not Edge" could be explicitly tested with IS_CHROMIUM && !IS_EDGE
- *
- * @static
- * @deprecated
- * @type {Boolean}
- */
- let IS_CHROME = false;
-
- /**
- * The detected Chromium version - or `null`.
- *
- * @static
- * @type {number|null}
- */
- let CHROMIUM_VERSION = null;
-
- /**
- * The detected Google Chrome version - or `null`.
- * This has always been the _Chromium_ version, i.e. would return on Chromium Edge.
- * Deprecated, use CHROMIUM_VERSION instead.
- *
- * @static
- * @deprecated
- * @type {number|null}
- */
- let CHROME_VERSION = null;
-
- /**
- * The detected Internet Explorer version - or `null`.
- *
- * @static
- * @deprecated
- * @type {number|null}
- */
- let IE_VERSION = null;
-
- /**
- * Whether or not this is desktop Safari.
- *
- * @static
- * @type {Boolean}
- */
- let IS_SAFARI = false;
-
- /**
- * Whether or not this is a Windows machine.
- *
- * @static
- * @type {Boolean}
- */
- let IS_WINDOWS = false;
-
- /**
- * Whether or not this device is an iPad.
- *
- * @static
- * @type {Boolean}
- */
- let IS_IPAD = false;
-
- /**
- * Whether or not this device is an iPhone.
- *
- * @static
- * @type {Boolean}
- */
- // The Facebook app's UIWebView identifies as both an iPhone and iPad, so
- // to identify iPhones, we need to exclude iPads.
- // http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/
- let IS_IPHONE = false;
-
- /**
- * Whether or not this is a Tizen device.
- *
- * @static
- * @type {Boolean}
- */
- let IS_TIZEN = false;
-
- /**
- * Whether or not this is a WebOS device.
- *
- * @static
- * @type {Boolean}
- */
- let IS_WEBOS = false;
-
- /**
- * Whether or not this is a Smart TV (Tizen or WebOS) device.
- *
- * @static
- * @type {Boolean}
- */
- let IS_SMART_TV = false;
-
- /**
- * Whether or not this device is touch-enabled.
- *
- * @static
- * @const
- * @type {Boolean}
- */
- const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));
- const UAD = window.navigator && window.navigator.userAgentData;
- if (UAD && UAD.platform && UAD.brands) {
- // If userAgentData is present, use it instead of userAgent to avoid warnings
- // Currently only implemented on Chromium
- // userAgentData does not expose Android version, so ANDROID_VERSION remains `null`
-
- IS_ANDROID = UAD.platform === 'Android';
- IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge'));
- IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium'));
- IS_CHROME = !IS_EDGE && IS_CHROMIUM;
- CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null;
- IS_WINDOWS = UAD.platform === 'Windows';
- }
-
- // If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser,
- // or it's a browser that has added userAgentData since that we don't have tests for yet. In either case,
- // the checks need to be made agiainst the regular userAgent string.
- if (!IS_CHROMIUM) {
- const USER_AGENT = window.navigator && window.navigator.userAgent || '';
- IS_IPOD = /iPod/i.test(USER_AGENT);
- IOS_VERSION = function () {
- const match = USER_AGENT.match(/OS (\d+)_/i);
- if (match && match[1]) {
- return match[1];
- }
- return null;
- }();
- IS_ANDROID = /Android/i.test(USER_AGENT);
- ANDROID_VERSION = function () {
- // This matches Android Major.Minor.Patch versions
- // ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned
- const match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i);
- if (!match) {
- return null;
- }
- const major = match[1] && parseFloat(match[1]);
- const minor = match[2] && parseFloat(match[2]);
- if (major && minor) {
- return parseFloat(match[1] + '.' + match[2]);
- } else if (major) {
- return major;
- }
- return null;
- }();
- IS_FIREFOX = /Firefox/i.test(USER_AGENT);
- IS_EDGE = /Edg/i.test(USER_AGENT);
- IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT);
- IS_CHROME = !IS_EDGE && IS_CHROMIUM;
- CHROMIUM_VERSION = CHROME_VERSION = function () {
- const match = USER_AGENT.match(/(Chrome|CriOS)\/(\d+)/);
- if (match && match[2]) {
- return parseFloat(match[2]);
- }
- return null;
- }();
- IE_VERSION = function () {
- const result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT);
- let version = result && parseFloat(result[1]);
- if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {
- // IE 11 has a different user agent string than other IE versions
- version = 11.0;
- }
- return version;
- }();
- IS_TIZEN = /Tizen/i.test(USER_AGENT);
- IS_WEBOS = /Web0S/i.test(USER_AGENT);
- IS_SMART_TV = IS_TIZEN || IS_WEBOS;
- IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE && !IS_SMART_TV;
- IS_WINDOWS = /Windows/i.test(USER_AGENT);
- IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);
- IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;
- }
-
- /**
- * Whether or not this is an iOS device.
- *
- * @static
- * @const
- * @type {Boolean}
- */
- const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;
-
- /**
- * Whether or not this is any flavor of Safari - including iOS.
- *
- * @static
- * @const
- * @type {Boolean}
- */
- const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;
-
- var browser = /*#__PURE__*/Object.freeze({
- __proto__: null,
- get IS_IPOD () { return IS_IPOD; },
- get IOS_VERSION () { return IOS_VERSION; },
- get IS_ANDROID () { return IS_ANDROID; },
- get ANDROID_VERSION () { return ANDROID_VERSION; },
- get IS_FIREFOX () { return IS_FIREFOX; },
- get IS_EDGE () { return IS_EDGE; },
- get IS_CHROMIUM () { return IS_CHROMIUM; },
- get IS_CHROME () { return IS_CHROME; },
- get CHROMIUM_VERSION () { return CHROMIUM_VERSION; },
- get CHROME_VERSION () { return CHROME_VERSION; },
- get IE_VERSION () { return IE_VERSION; },
- get IS_SAFARI () { return IS_SAFARI; },
- get IS_WINDOWS () { return IS_WINDOWS; },
- get IS_IPAD () { return IS_IPAD; },
- get IS_IPHONE () { return IS_IPHONE; },
- get IS_TIZEN () { return IS_TIZEN; },
- get IS_WEBOS () { return IS_WEBOS; },
- get IS_SMART_TV () { return IS_SMART_TV; },
- TOUCH_ENABLED: TOUCH_ENABLED,
- IS_IOS: IS_IOS,
- IS_ANY_SAFARI: IS_ANY_SAFARI
- });
-
- /**
- * @file dom.js
- * @module dom
- */
-
- /**
- * Detect if a value is a string with any non-whitespace characters.
- *
- * @private
- * @param {string} str
- * The string to check
- *
- * @return {boolean}
- * Will be `true` if the string is non-blank, `false` otherwise.
- *
- */
- function isNonBlankString(str) {
- // we use str.trim as it will trim any whitespace characters
- // from the front or back of non-whitespace characters. aka
- // Any string that contains non-whitespace characters will
- // still contain them after `trim` but whitespace only strings
- // will have a length of 0, failing this check.
- return typeof str === 'string' && Boolean(str.trim());
- }
-
- /**
- * Throws an error if the passed string has whitespace. This is used by
- * class methods to be relatively consistent with the classList API.
- *
- * @private
- * @param {string} str
- * The string to check for whitespace.
- *
- * @throws {Error}
- * Throws an error if there is whitespace in the string.
- */
- function throwIfWhitespace(str) {
- // str.indexOf instead of regex because str.indexOf is faster performance wise.
- if (str.indexOf(' ') >= 0) {
- throw new Error('class has illegal whitespace characters');
- }
- }
-
- /**
- * Whether the current DOM interface appears to be real (i.e. not simulated).
- *
- * @return {boolean}
- * Will be `true` if the DOM appears to be real, `false` otherwise.
- */
- function isReal() {
- // Both document and window will never be undefined thanks to `global`.
- return document === window.document;
- }
-
- /**
- * Determines, via duck typing, whether or not a value is a DOM element.
- *
- * @param {*} value
- * The value to check.
- *
- * @return {boolean}
- * Will be `true` if the value is a DOM element, `false` otherwise.
- */
- function isEl(value) {
- return isObject$1(value) && value.nodeType === 1;
- }
-
- /**
- * Determines if the current DOM is embedded in an iframe.
- *
- * @return {boolean}
- * Will be `true` if the DOM is embedded in an iframe, `false`
- * otherwise.
- */
- function isInFrame() {
- // We need a try/catch here because Safari will throw errors when attempting
- // to get either `parent` or `self`
- try {
- return window.parent !== window.self;
- } catch (x) {
- return true;
- }
- }
-
- /**
- * Creates functions to query the DOM using a given method.
- *
- * @private
- * @param {string} method
- * The method to create the query with.
- *
- * @return {Function}
- * The query method
- */
- function createQuerier(method) {
- return function (selector, context) {
- if (!isNonBlankString(selector)) {
- return document[method](null);
- }
- if (isNonBlankString(context)) {
- context = document.querySelector(context);
- }
- const ctx = isEl(context) ? context : document;
- return ctx[method] && ctx[method](selector);
- };
- }
-
- /**
- * Creates an element and applies properties, attributes, and inserts content.
- *
- * @param {string} [tagName='div']
- * Name of tag to be created.
- *
- * @param {Object} [properties={}]
- * Element properties to be applied.
- *
- * @param {Object} [attributes={}]
- * Element attributes to be applied.
- *
- * @param {ContentDescriptor} [content]
- * A content descriptor object.
- *
- * @return {Element}
- * The element that was created.
- */
- function createEl(tagName = 'div', properties = {}, attributes = {}, content) {
- const el = document.createElement(tagName);
- Object.getOwnPropertyNames(properties).forEach(function (propName) {
- const val = properties[propName];
-
- // Handle textContent since it's not supported everywhere and we have a
- // method for it.
- if (propName === 'textContent') {
- textContent(el, val);
- } else if (el[propName] !== val || propName === 'tabIndex') {
- el[propName] = val;
- }
- });
- Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
- el.setAttribute(attrName, attributes[attrName]);
- });
- if (content) {
- appendContent(el, content);
- }
- return el;
- }
-
- /**
- * Injects text into an element, replacing any existing contents entirely.
- *
- * @param {HTMLElement} el
- * The element to add text content into
- *
- * @param {string} text
- * The text content to add.
- *
- * @return {Element}
- * The element with added text content.
- */
- function textContent(el, text) {
- if (typeof el.textContent === 'undefined') {
- el.innerText = text;
- } else {
- el.textContent = text;
- }
- return el;
- }
-
- /**
- * Insert an element as the first child node of another
- *
- * @param {Element} child
- * Element to insert
- *
- * @param {Element} parent
- * Element to insert child into
- */
- function prependTo(child, parent) {
- if (parent.firstChild) {
- parent.insertBefore(child, parent.firstChild);
- } else {
- parent.appendChild(child);
- }
- }
-
- /**
- * Check if an element has a class name.
- *
- * @param {Element} element
- * Element to check
- *
- * @param {string} classToCheck
- * Class name to check for
- *
- * @return {boolean}
- * Will be `true` if the element has a class, `false` otherwise.
- *
- * @throws {Error}
- * Throws an error if `classToCheck` has white space.
- */
- function hasClass(element, classToCheck) {
- throwIfWhitespace(classToCheck);
- return element.classList.contains(classToCheck);
- }
-
- /**
- * Add a class name to an element.
- *
- * @param {Element} element
- * Element to add class name to.
- *
- * @param {...string} classesToAdd
- * One or more class name to add.
- *
- * @return {Element}
- * The DOM element with the added class name.
- */
- function addClass(element, ...classesToAdd) {
- element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
- return element;
- }
-
- /**
- * Remove a class name from an element.
- *
- * @param {Element} element
- * Element to remove a class name from.
- *
- * @param {...string} classesToRemove
- * One or more class name to remove.
- *
- * @return {Element}
- * The DOM element with class name removed.
- */
- function removeClass(element, ...classesToRemove) {
- // Protect in case the player gets disposed
- if (!element) {
- log$1.warn("removeClass was called with an element that doesn't exist");
- return null;
- }
- element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
- return element;
- }
-
- /**
- * The callback definition for toggleClass.
- *
- * @callback module:dom~PredicateCallback
- * @param {Element} element
- * The DOM element of the Component.
- *
- * @param {string} classToToggle
- * The `className` that wants to be toggled
- *
- * @return {boolean|undefined}
- * If `true` is returned, the `classToToggle` will be added to the
- * `element`. If `false`, the `classToToggle` will be removed from
- * the `element`. If `undefined`, the callback will be ignored.
- */
-
- /**
- * Adds or removes a class name to/from an element depending on an optional
- * condition or the presence/absence of the class name.
- *
- * @param {Element} element
- * The element to toggle a class name on.
- *
- * @param {string} classToToggle
- * The class that should be toggled.
- *
- * @param {boolean|module:dom~PredicateCallback} [predicate]
- * See the return value for {@link module:dom~PredicateCallback}
- *
- * @return {Element}
- * The element with a class that has been toggled.
- */
- function toggleClass(element, classToToggle, predicate) {
- if (typeof predicate === 'function') {
- predicate = predicate(element, classToToggle);
- }
- if (typeof predicate !== 'boolean') {
- predicate = undefined;
- }
- classToToggle.split(/\s+/).forEach(className => element.classList.toggle(className, predicate));
- return element;
- }
-
- /**
- * Apply attributes to an HTML element.
- *
- * @param {Element} el
- * Element to add attributes to.
- *
- * @param {Object} [attributes]
- * Attributes to be applied.
- */
- function setAttributes(el, attributes) {
- Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
- const attrValue = attributes[attrName];
- if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {
- el.removeAttribute(attrName);
- } else {
- el.setAttribute(attrName, attrValue === true ? '' : attrValue);
- }
- });
- }
-
- /**
- * Get an element's attribute values, as defined on the HTML tag.
- *
- * Attributes are not the same as properties. They're defined on the tag
- * or with setAttribute.
- *
- * @param {Element} tag
- * Element from which to get tag attributes.
- *
- * @return {Object}
- * All attributes of the element. Boolean attributes will be `true` or
- * `false`, others will be strings.
- */
- function getAttributes(tag) {
- const obj = {};
-
- // known boolean attributes
- // we can check for matching boolean properties, but not all browsers
- // and not all tags know about these attributes, so, we still want to check them manually
- const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted'];
- if (tag && tag.attributes && tag.attributes.length > 0) {
- const attrs = tag.attributes;
- for (let i = attrs.length - 1; i >= 0; i--) {
- const attrName = attrs[i].name;
- /** @type {boolean|string} */
- let attrVal = attrs[i].value;
-
- // check for known booleans
- // the matching element property will return a value for typeof
- if (knownBooleans.includes(attrName)) {
- // the value of an included boolean attribute is typically an empty
- // string ('') which would equal false if we just check for a false value.
- // we also don't want support bad code like autoplay='false'
- attrVal = attrVal !== null ? true : false;
- }
- obj[attrName] = attrVal;
- }
- }
- return obj;
- }
-
- /**
- * Get the value of an element's attribute.
- *
- * @param {Element} el
- * A DOM element.
- *
- * @param {string} attribute
- * Attribute to get the value of.
- *
- * @return {string}
- * The value of the attribute.
- */
- function getAttribute(el, attribute) {
- return el.getAttribute(attribute);
- }
-
- /**
- * Set the value of an element's attribute.
- *
- * @param {Element} el
- * A DOM element.
- *
- * @param {string} attribute
- * Attribute to set.
- *
- * @param {string} value
- * Value to set the attribute to.
- */
- function setAttribute(el, attribute, value) {
- el.setAttribute(attribute, value);
- }
-
- /**
- * Remove an element's attribute.
- *
- * @param {Element} el
- * A DOM element.
- *
- * @param {string} attribute
- * Attribute to remove.
- */
- function removeAttribute(el, attribute) {
- el.removeAttribute(attribute);
- }
-
- /**
- * Attempt to block the ability to select text.
- */
- function blockTextSelection() {
- document.body.focus();
- document.onselectstart = function () {
- return false;
- };
- }
-
- /**
- * Turn off text selection blocking.
- */
- function unblockTextSelection() {
- document.onselectstart = function () {
- return true;
- };
- }
-
- /**
- * Identical to the native `getBoundingClientRect` function, but ensures that
- * the method is supported at all (it is in all browsers we claim to support)
- * and that the element is in the DOM before continuing.
- *
- * This wrapper function also shims properties which are not provided by some
- * older browsers (namely, IE8).
- *
- * Additionally, some browsers do not support adding properties to a
- * `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard
- * properties (except `x` and `y` which are not widely supported). This helps
- * avoid implementations where keys are non-enumerable.
- *
- * @param {Element} el
- * Element whose `ClientRect` we want to calculate.
- *
- * @return {Object|undefined}
- * Always returns a plain object - or `undefined` if it cannot.
- */
- function getBoundingClientRect(el) {
- if (el && el.getBoundingClientRect && el.parentNode) {
- const rect = el.getBoundingClientRect();
- const result = {};
- ['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => {
- if (rect[k] !== undefined) {
- result[k] = rect[k];
- }
- });
- if (!result.height) {
- result.height = parseFloat(computedStyle(el, 'height'));
- }
- if (!result.width) {
- result.width = parseFloat(computedStyle(el, 'width'));
- }
- return result;
- }
- }
-
- /**
- * Represents the position of a DOM element on the page.
- *
- * @typedef {Object} module:dom~Position
- *
- * @property {number} left
- * Pixels to the left.
- *
- * @property {number} top
- * Pixels from the top.
- */
-
- /**
- * Get the position of an element in the DOM.
- *
- * Uses `getBoundingClientRect` technique from John Resig.
- *
- * @see http://ejohn.org/blog/getboundingclientrect-is-awesome/
- *
- * @param {Element} el
- * Element from which to get offset.
- *
- * @return {module:dom~Position}
- * The position of the element that was passed in.
- */
- function findPosition(el) {
- if (!el || el && !el.offsetParent) {
- return {
- left: 0,
- top: 0,
- width: 0,
- height: 0
- };
- }
- const width = el.offsetWidth;
- const height = el.offsetHeight;
- let left = 0;
- let top = 0;
- while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {
- left += el.offsetLeft;
- top += el.offsetTop;
- el = el.offsetParent;
- }
- return {
- left,
- top,
- width,
- height
- };
- }
-
- /**
- * Represents x and y coordinates for a DOM element or mouse pointer.
- *
- * @typedef {Object} module:dom~Coordinates
- *
- * @property {number} x
- * x coordinate in pixels
- *
- * @property {number} y
- * y coordinate in pixels
- */
-
- /**
- * Get the pointer position within an element.
- *
- * The base on the coordinates are the bottom left of the element.
- *
- * @param {Element} el
- * Element on which to get the pointer position on.
- *
- * @param {Event} event
- * Event object.
- *
- * @return {module:dom~Coordinates}
- * A coordinates object corresponding to the mouse position.
- *
- */
- function getPointerPosition(el, event) {
- const translated = {
- x: 0,
- y: 0
- };
- if (IS_IOS) {
- let item = el;
- while (item && item.nodeName.toLowerCase() !== 'html') {
- const transform = computedStyle(item, 'transform');
- if (/^matrix/.test(transform)) {
- const values = transform.slice(7, -1).split(/,\s/).map(Number);
- translated.x += values[4];
- translated.y += values[5];
- } else if (/^matrix3d/.test(transform)) {
- const values = transform.slice(9, -1).split(/,\s/).map(Number);
- translated.x += values[12];
- translated.y += values[13];
- }
- item = item.parentNode;
- }
- }
- const position = {};
- const boxTarget = findPosition(event.target);
- const box = findPosition(el);
- const boxW = box.width;
- const boxH = box.height;
- let offsetY = event.offsetY - (box.top - boxTarget.top);
- let offsetX = event.offsetX - (box.left - boxTarget.left);
- if (event.changedTouches) {
- offsetX = event.changedTouches[0].pageX - box.left;
- offsetY = event.changedTouches[0].pageY + box.top;
- if (IS_IOS) {
- offsetX -= translated.x;
- offsetY -= translated.y;
- }
- }
- position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));
- position.x = Math.max(0, Math.min(1, offsetX / boxW));
- return position;
- }
-
- /**
- * Determines, via duck typing, whether or not a value is a text node.
- *
- * @param {*} value
- * Check if this value is a text node.
- *
- * @return {boolean}
- * Will be `true` if the value is a text node, `false` otherwise.
- */
- function isTextNode$1(value) {
- return isObject$1(value) && value.nodeType === 3;
- }
-
- /**
- * Empties the contents of an element.
- *
- * @param {Element} el
- * The element to empty children from
- *
- * @return {Element}
- * The element with no children
- */
- function emptyEl(el) {
- while (el.firstChild) {
- el.removeChild(el.firstChild);
- }
- return el;
- }
-
- /**
- * This is a mixed value that describes content to be injected into the DOM
- * via some method. It can be of the following types:
- *
- * Type | Description
- * -----------|-------------
- * `string` | The value will be normalized into a text node.
- * `Element` | The value will be accepted as-is.
- * `Text` | A TextNode. The value will be accepted as-is.
- * `Array` | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).
- * `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.
- *
- * @typedef {string|Element|Text|Array|Function} ContentDescriptor
- */
-
- /**
- * Normalizes content for eventual insertion into the DOM.
- *
- * This allows a wide range of content definition methods, but helps protect
- * from falling into the trap of simply writing to `innerHTML`, which could
- * be an XSS concern.
- *
- * The content for an element can be passed in multiple types and
- * combinations, whose behavior is as follows:
- *
- * @param {ContentDescriptor} content
- * A content descriptor value.
- *
- * @return {Array}
- * All of the content that was passed in, normalized to an array of
- * elements or text nodes.
- */
- function normalizeContent(content) {
- // First, invoke content if it is a function. If it produces an array,
- // that needs to happen before normalization.
- if (typeof content === 'function') {
- content = content();
- }
-
- // Next up, normalize to an array, so one or many items can be normalized,
- // filtered, and returned.
- return (Array.isArray(content) ? content : [content]).map(value => {
- // First, invoke value if it is a function to produce a new value,
- // which will be subsequently normalized to a Node of some kind.
- if (typeof value === 'function') {
- value = value();
- }
- if (isEl(value) || isTextNode$1(value)) {
- return value;
- }
- if (typeof value === 'string' && /\S/.test(value)) {
- return document.createTextNode(value);
- }
- }).filter(value => value);
- }
-
- /**
- * Normalizes and appends content to an element.
- *
- * @param {Element} el
- * Element to append normalized content to.
- *
- * @param {ContentDescriptor} content
- * A content descriptor value.
- *
- * @return {Element}
- * The element with appended normalized content.
- */
- function appendContent(el, content) {
- normalizeContent(content).forEach(node => el.appendChild(node));
- return el;
- }
-
- /**
- * Normalizes and inserts content into an element; this is identical to
- * `appendContent()`, except it empties the element first.
- *
- * @param {Element} el
- * Element to insert normalized content into.
- *
- * @param {ContentDescriptor} content
- * A content descriptor value.
- *
- * @return {Element}
- * The element with inserted normalized content.
- */
- function insertContent(el, content) {
- return appendContent(emptyEl(el), content);
- }
-
- /**
- * Check if an event was a single left click.
- *
- * @param {MouseEvent} event
- * Event object.
- *
- * @return {boolean}
- * Will be `true` if a single left click, `false` otherwise.
- */
- function isSingleLeftClick(event) {
- // Note: if you create something draggable, be sure to
- // call it on both `mousedown` and `mousemove` event,
- // otherwise `mousedown` should be enough for a button
-
- if (event.button === undefined && event.buttons === undefined) {
- // Why do we need `buttons` ?
- // Because, middle mouse sometimes have this:
- // e.button === 0 and e.buttons === 4
- // Furthermore, we want to prevent combination click, something like
- // HOLD middlemouse then left click, that would be
- // e.button === 0, e.buttons === 5
- // just `button` is not gonna work
-
- // Alright, then what this block does ?
- // this is for chrome `simulate mobile devices`
- // I want to support this as well
-
- return true;
- }
- if (event.button === 0 && event.buttons === undefined) {
- // Touch screen, sometimes on some specific device, `buttons`
- // doesn't have anything (safari on ios, blackberry...)
-
- return true;
- }
-
- // `mouseup` event on a single left click has
- // `button` and `buttons` equal to 0
- if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {
- return true;
- }
- if (event.button !== 0 || event.buttons !== 1) {
- // This is the reason we have those if else block above
- // if any special case we can catch and let it slide
- // we do it above, when get to here, this definitely
- // is-not-left-click
-
- return false;
- }
- return true;
- }
-
- /**
- * Finds a single DOM element matching `selector` within the optional
- * `context` of another DOM element (defaulting to `document`).
- *
- * @param {string} selector
- * A valid CSS selector, which will be passed to `querySelector`.
- *
- * @param {Element|String} [context=document]
- * A DOM element within which to query. Can also be a selector
- * string in which case the first matching element will be used
- * as context. If missing (or no element matches selector), falls
- * back to `document`.
- *
- * @return {Element|null}
- * The element that was found or null.
- */
- const $ = createQuerier('querySelector');
-
- /**
- * Finds a all DOM elements matching `selector` within the optional
- * `context` of another DOM element (defaulting to `document`).
- *
- * @param {string} selector
- * A valid CSS selector, which will be passed to `querySelectorAll`.
- *
- * @param {Element|String} [context=document]
- * A DOM element within which to query. Can also be a selector
- * string in which case the first matching element will be used
- * as context. If missing (or no element matches selector), falls
- * back to `document`.
- *
- * @return {NodeList}
- * A element list of elements that were found. Will be empty if none
- * were found.
- *
- */
- const $$ = createQuerier('querySelectorAll');
-
- /**
- * A safe getComputedStyle.
- *
- * This is needed because in Firefox, if the player is loaded in an iframe with
- * `display:none`, then `getComputedStyle` returns `null`, so, we do a
- * null-check to make sure that the player doesn't break in these cases.
- *
- * @param {Element} el
- * The element you want the computed style of
- *
- * @param {string} prop
- * The property name you want
- *
- * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
- */
- function computedStyle(el, prop) {
- if (!el || !prop) {
- return '';
- }
- if (typeof window.getComputedStyle === 'function') {
- let computedStyleValue;
- try {
- computedStyleValue = window.getComputedStyle(el);
- } catch (e) {
- return '';
- }
- return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';
- }
- return '';
- }
-
- /**
- * Copy document style sheets to another window.
- *
- * @param {Window} win
- * The window element you want to copy the document style sheets to.
- *
- */
- function copyStyleSheetsToWindow(win) {
- [...document.styleSheets].forEach(styleSheet => {
- try {
- const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join('');
- const style = document.createElement('style');
- style.textContent = cssRules;
- win.document.head.appendChild(style);
- } catch (e) {
- const link = document.createElement('link');
- link.rel = 'stylesheet';
- link.type = styleSheet.type;
- // For older Safari this has to be the string; on other browsers setting the MediaList works
- link.media = styleSheet.media.mediaText;
- link.href = styleSheet.href;
- win.document.head.appendChild(link);
- }
- });
- }
-
- var Dom = /*#__PURE__*/Object.freeze({
- __proto__: null,
- isReal: isReal,
- isEl: isEl,
- isInFrame: isInFrame,
- createEl: createEl,
- textContent: textContent,
- prependTo: prependTo,
- hasClass: hasClass,
- addClass: addClass,
- removeClass: removeClass,
- toggleClass: toggleClass,
- setAttributes: setAttributes,
- getAttributes: getAttributes,
- getAttribute: getAttribute,
- setAttribute: setAttribute,
- removeAttribute: removeAttribute,
- blockTextSelection: blockTextSelection,
- unblockTextSelection: unblockTextSelection,
- getBoundingClientRect: getBoundingClientRect,
- findPosition: findPosition,
- getPointerPosition: getPointerPosition,
- isTextNode: isTextNode$1,
- emptyEl: emptyEl,
- normalizeContent: normalizeContent,
- appendContent: appendContent,
- insertContent: insertContent,
- isSingleLeftClick: isSingleLeftClick,
- $: $,
- $$: $$,
- computedStyle: computedStyle,
- copyStyleSheetsToWindow: copyStyleSheetsToWindow
- });
-
- /**
- * @file setup.js - Functions for setting up a player without
- * user interaction based on the data-setup `attribute` of the video tag.
- *
- * @module setup
- */
- let _windowLoaded = false;
- let videojs$1;
-
- /**
- * Set up any tags that have a data-setup `attribute` when the player is started.
- */
- const autoSetup = function () {
- if (videojs$1.options.autoSetup === false) {
- return;
- }
- const vids = Array.prototype.slice.call(document.getElementsByTagName('video'));
- const audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));
- const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));
- const mediaEls = vids.concat(audios, divs);
-
- // Check if any media elements exist
- if (mediaEls && mediaEls.length > 0) {
- for (let i = 0, e = mediaEls.length; i < e; i++) {
- const mediaEl = mediaEls[i];
-
- // Check if element exists, has getAttribute func.
- if (mediaEl && mediaEl.getAttribute) {
- // Make sure this player hasn't already been set up.
- if (mediaEl.player === undefined) {
- const options = mediaEl.getAttribute('data-setup');
-
- // Check if data-setup attr exists.
- // We only auto-setup if they've added the data-setup attr.
- if (options !== null) {
- // Create new video.js instance.
- videojs$1(mediaEl);
- }
- }
-
- // If getAttribute isn't defined, we need to wait for the DOM.
- } else {
- autoSetupTimeout(1);
- break;
- }
- }
-
- // No videos were found, so keep looping unless page is finished loading.
- } else if (!_windowLoaded) {
- autoSetupTimeout(1);
- }
- };
-
- /**
- * Wait until the page is loaded before running autoSetup. This will be called in
- * autoSetup if `hasLoaded` returns false.
- *
- * @param {number} wait
- * How long to wait in ms
- *
- * @param {module:videojs} [vjs]
- * The videojs library function
- */
- function autoSetupTimeout(wait, vjs) {
- // Protect against breakage in non-browser environments
- if (!isReal()) {
- return;
- }
- if (vjs) {
- videojs$1 = vjs;
- }
- window.setTimeout(autoSetup, wait);
- }
-
- /**
- * Used to set the internal tracking of window loaded state to true.
- *
- * @private
- */
- function setWindowLoaded() {
- _windowLoaded = true;
- window.removeEventListener('load', setWindowLoaded);
- }
- if (isReal()) {
- if (document.readyState === 'complete') {
- setWindowLoaded();
- } else {
- /**
- * Listen for the load event on window, and set _windowLoaded to true.
- *
- * We use a standard event listener here to avoid incrementing the GUID
- * before any players are created.
- *
- * @listens load
- */
- window.addEventListener('load', setWindowLoaded);
- }
- }
-
- /**
- * @file stylesheet.js
- * @module stylesheet
- */
-
- /**
- * Create a DOM style element given a className for it.
- *
- * @param {string} className
- * The className to add to the created style element.
- *
- * @return {Element}
- * The element that was created.
- */
- const createStyleElement = function (className) {
- const style = document.createElement('style');
- style.className = className;
- return style;
- };
-
- /**
- * Add text to a DOM element.
- *
- * @param {Element} el
- * The Element to add text content to.
- *
- * @param {string} content
- * The text to add to the element.
- */
- const setTextContent = function (el, content) {
- if (el.styleSheet) {
- el.styleSheet.cssText = content;
- } else {
- el.textContent = content;
- }
- };
-
- /**
- * @file dom-data.js
- * @module dom-data
- */
-
- /**
- * Element Data Store.
- *
- * Allows for binding data to an element without putting it directly on the
- * element. Ex. Event listeners are stored here.
- * (also from jsninja.com, slightly modified and updated for closure compiler)
- *
- * @type {Object}
- * @private
- */
- var DomData = new WeakMap();
-
- /**
- * @file guid.js
- * @module guid
- */
-
- // Default value for GUIDs. This allows us to reset the GUID counter in tests.
- //
- // The initial GUID is 3 because some users have come to rely on the first
- // default player ID ending up as `vjs_video_3`.
- //
- // See: https://github.com/videojs/video.js/pull/6216
- const _initialGuid = 3;
-
- /**
- * Unique ID for an element or function
- *
- * @type {Number}
- */
- let _guid = _initialGuid;
-
- /**
- * Get a unique auto-incrementing ID by number that has not been returned before.
- *
- * @return {number}
- * A new unique ID.
- */
- function newGUID() {
- return _guid++;
- }
-
- /**
- * @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)
- * (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)
- * This should work very similarly to jQuery's events, however it's based off the book version which isn't as
- * robust as jquery's, so there's probably some differences.
- *
- * @file events.js
- * @module events
- */
-
- /**
- * Clean up the listener cache and dispatchers
- *
- * @param {Element|Object} elem
- * Element to clean up
- *
- * @param {string} type
- * Type of event to clean up
- */
- function _cleanUpEvents(elem, type) {
- if (!DomData.has(elem)) {
- return;
- }
- const data = DomData.get(elem);
-
- // Remove the events of a particular type if there are none left
- if (data.handlers[type].length === 0) {
- delete data.handlers[type];
- // data.handlers[type] = null;
- // Setting to null was causing an error with data.handlers
-
- // Remove the meta-handler from the element
- if (elem.removeEventListener) {
- elem.removeEventListener(type, data.dispatcher, false);
- } else if (elem.detachEvent) {
- elem.detachEvent('on' + type, data.dispatcher);
- }
- }
-
- // Remove the events object if there are no types left
- if (Object.getOwnPropertyNames(data.handlers).length <= 0) {
- delete data.handlers;
- delete data.dispatcher;
- delete data.disabled;
- }
-
- // Finally remove the element data if there is no data left
- if (Object.getOwnPropertyNames(data).length === 0) {
- DomData.delete(elem);
- }
- }
-
- /**
- * Loops through an array of event types and calls the requested method for each type.
- *
- * @param {Function} fn
- * The event method we want to use.
- *
- * @param {Element|Object} elem
- * Element or object to bind listeners to
- *
- * @param {string[]} types
- * Type of event to bind to.
- *
- * @param {Function} callback
- * Event listener.
- */
- function _handleMultipleEvents(fn, elem, types, callback) {
- types.forEach(function (type) {
- // Call the event method for each one of the types
- fn(elem, type, callback);
- });
- }
-
- /**
- * Fix a native event to have standard property values
- *
- * @param {Object} event
- * Event object to fix.
- *
- * @return {Object}
- * Fixed event object.
- */
- function fixEvent(event) {
- if (event.fixed_) {
- return event;
- }
- function returnTrue() {
- return true;
- }
- function returnFalse() {
- return false;
- }
-
- // Test if fixing up is needed
- // Used to check if !event.stopPropagation instead of isPropagationStopped
- // But native events return true for stopPropagation, but don't have
- // other expected methods like isPropagationStopped. Seems to be a problem
- // with the Javascript Ninja code. So we're just overriding all events now.
- if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {
- const old = event || window.event;
- event = {};
- // Clone the old object so that we can modify the values event = {};
- // IE8 Doesn't like when you mess with native event properties
- // Firefox returns false for event.hasOwnProperty('type') and other props
- // which makes copying more difficult.
- // TODO: Probably best to create a whitelist of event props
- for (const key in old) {
- // Safari 6.0.3 warns you if you try to copy deprecated layerX/Y
- // Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation
- // and webkitMovementX/Y
- // Lighthouse complains if Event.path is copied
- if (key !== 'layerX' && key !== 'layerY' && key !== 'keyLocation' && key !== 'webkitMovementX' && key !== 'webkitMovementY' && key !== 'path') {
- // Chrome 32+ warns if you try to copy deprecated returnValue, but
- // we still want to if preventDefault isn't supported (IE8).
- if (!(key === 'returnValue' && old.preventDefault)) {
- event[key] = old[key];
- }
- }
- }
-
- // The event occurred on this element
- if (!event.target) {
- event.target = event.srcElement || document;
- }
-
- // Handle which other element the event is related to
- if (!event.relatedTarget) {
- event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
- }
-
- // Stop the default browser action
- event.preventDefault = function () {
- if (old.preventDefault) {
- old.preventDefault();
- }
- event.returnValue = false;
- old.returnValue = false;
- event.defaultPrevented = true;
- };
- event.defaultPrevented = false;
-
- // Stop the event from bubbling
- event.stopPropagation = function () {
- if (old.stopPropagation) {
- old.stopPropagation();
- }
- event.cancelBubble = true;
- old.cancelBubble = true;
- event.isPropagationStopped = returnTrue;
- };
- event.isPropagationStopped = returnFalse;
-
- // Stop the event from bubbling and executing other handlers
- event.stopImmediatePropagation = function () {
- if (old.stopImmediatePropagation) {
- old.stopImmediatePropagation();
- }
- event.isImmediatePropagationStopped = returnTrue;
- event.stopPropagation();
- };
- event.isImmediatePropagationStopped = returnFalse;
-
- // Handle mouse position
- if (event.clientX !== null && event.clientX !== undefined) {
- const doc = document.documentElement;
- const body = document.body;
- event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
- event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
- }
-
- // Handle key presses
- event.which = event.charCode || event.keyCode;
-
- // Fix button for mouse clicks:
- // 0 == left; 1 == middle; 2 == right
- if (event.button !== null && event.button !== undefined) {
- // The following is disabled because it does not pass videojs-standard
- // and... yikes.
- /* eslint-disable */
- event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;
- /* eslint-enable */
- }
- }
-
- event.fixed_ = true;
- // Returns fixed-up instance
- return event;
- }
-
- /**
- * Whether passive event listeners are supported
- */
- let _supportsPassive;
- const supportsPassive = function () {
- if (typeof _supportsPassive !== 'boolean') {
- _supportsPassive = false;
- try {
- const opts = Object.defineProperty({}, 'passive', {
- get() {
- _supportsPassive = true;
- }
- });
- window.addEventListener('test', null, opts);
- window.removeEventListener('test', null, opts);
- } catch (e) {
- // disregard
- }
- }
- return _supportsPassive;
- };
-
- /**
- * Touch events Chrome expects to be passive
- */
- const passiveEvents = ['touchstart', 'touchmove'];
-
- /**
- * Add an event listener to element
- * It stores the handler function in a separate cache object
- * and adds a generic handler to the element's event,
- * along with a unique id (guid) to the element.
- *
- * @param {Element|Object} elem
- * Element or object to bind listeners to
- *
- * @param {string|string[]} type
- * Type of event to bind to.
- *
- * @param {Function} fn
- * Event listener.
- */
- function on(elem, type, fn) {
- if (Array.isArray(type)) {
- return _handleMultipleEvents(on, elem, type, fn);
- }
- if (!DomData.has(elem)) {
- DomData.set(elem, {});
- }
- const data = DomData.get(elem);
-
- // We need a place to store all our handler data
- if (!data.handlers) {
- data.handlers = {};
- }
- if (!data.handlers[type]) {
- data.handlers[type] = [];
- }
- if (!fn.guid) {
- fn.guid = newGUID();
- }
- data.handlers[type].push(fn);
- if (!data.dispatcher) {
- data.disabled = false;
- data.dispatcher = function (event, hash) {
- if (data.disabled) {
- return;
- }
- event = fixEvent(event);
- const handlers = data.handlers[event.type];
- if (handlers) {
- // Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.
- const handlersCopy = handlers.slice(0);
- for (let m = 0, n = handlersCopy.length; m < n; m++) {
- if (event.isImmediatePropagationStopped()) {
- break;
- } else {
- try {
- handlersCopy[m].call(elem, event, hash);
- } catch (e) {
- log$1.error(e);
- }
- }
- }
- }
- };
- }
- if (data.handlers[type].length === 1) {
- if (elem.addEventListener) {
- let options = false;
- if (supportsPassive() && passiveEvents.indexOf(type) > -1) {
- options = {
- passive: true
- };
- }
- elem.addEventListener(type, data.dispatcher, options);
- } else if (elem.attachEvent) {
- elem.attachEvent('on' + type, data.dispatcher);
- }
- }
- }
-
- /**
- * Removes event listeners from an element
- *
- * @param {Element|Object} elem
- * Object to remove listeners from.
- *
- * @param {string|string[]} [type]
- * Type of listener to remove. Don't include to remove all events from element.
- *
- * @param {Function} [fn]
- * Specific listener to remove. Don't include to remove listeners for an event
- * type.
- */
- function off(elem, type, fn) {
- // Don't want to add a cache object through getElData if not needed
- if (!DomData.has(elem)) {
- return;
- }
- const data = DomData.get(elem);
-
- // If no events exist, nothing to unbind
- if (!data.handlers) {
- return;
- }
- if (Array.isArray(type)) {
- return _handleMultipleEvents(off, elem, type, fn);
- }
-
- // Utility function
- const removeType = function (el, t) {
- data.handlers[t] = [];
- _cleanUpEvents(el, t);
- };
-
- // Are we removing all bound events?
- if (type === undefined) {
- for (const t in data.handlers) {
- if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {
- removeType(elem, t);
- }
- }
- return;
- }
- const handlers = data.handlers[type];
-
- // If no handlers exist, nothing to unbind
- if (!handlers) {
- return;
- }
-
- // If no listener was provided, remove all listeners for type
- if (!fn) {
- removeType(elem, type);
- return;
- }
-
- // We're only removing a single handler
- if (fn.guid) {
- for (let n = 0; n < handlers.length; n++) {
- if (handlers[n].guid === fn.guid) {
- handlers.splice(n--, 1);
- }
- }
- }
- _cleanUpEvents(elem, type);
- }
-
- /**
- * Trigger an event for an element
- *
- * @param {Element|Object} elem
- * Element to trigger an event on
- *
- * @param {EventTarget~Event|string} event
- * A string (the type) or an event object with a type attribute
- *
- * @param {Object} [hash]
- * data hash to pass along with the event
- *
- * @return {boolean|undefined}
- * Returns the opposite of `defaultPrevented` if default was
- * prevented. Otherwise, returns `undefined`
- */
- function trigger(elem, event, hash) {
- // Fetches element data and a reference to the parent (for bubbling).
- // Don't want to add a data object to cache for every parent,
- // so checking hasElData first.
- const elemData = DomData.has(elem) ? DomData.get(elem) : {};
- const parent = elem.parentNode || elem.ownerDocument;
- // type = event.type || event,
- // handler;
-
- // If an event name was passed as a string, creates an event out of it
- if (typeof event === 'string') {
- event = {
- type: event,
- target: elem
- };
- } else if (!event.target) {
- event.target = elem;
- }
-
- // Normalizes the event properties.
- event = fixEvent(event);
-
- // If the passed element has a dispatcher, executes the established handlers.
- if (elemData.dispatcher) {
- elemData.dispatcher.call(elem, event, hash);
- }
-
- // Unless explicitly stopped or the event does not bubble (e.g. media events)
- // recursively calls this function to bubble the event up the DOM.
- if (parent && !event.isPropagationStopped() && event.bubbles === true) {
- trigger.call(null, parent, event, hash);
-
- // If at the top of the DOM, triggers the default action unless disabled.
- } else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {
- if (!DomData.has(event.target)) {
- DomData.set(event.target, {});
- }
- const targetData = DomData.get(event.target);
-
- // Checks if the target has a default action for this event.
- if (event.target[event.type]) {
- // Temporarily disables event dispatching on the target as we have already executed the handler.
- targetData.disabled = true;
- // Executes the default action.
- if (typeof event.target[event.type] === 'function') {
- event.target[event.type]();
- }
- // Re-enables event dispatching.
- targetData.disabled = false;
- }
- }
-
- // Inform the triggerer if the default was prevented by returning false
- return !event.defaultPrevented;
- }
-
- /**
- * Trigger a listener only once for an event.
- *
- * @param {Element|Object} elem
- * Element or object to bind to.
- *
- * @param {string|string[]} type
- * Name/type of event
- *
- * @param {Event~EventListener} fn
- * Event listener function
- */
- function one(elem, type, fn) {
- if (Array.isArray(type)) {
- return _handleMultipleEvents(one, elem, type, fn);
- }
- const func = function () {
- off(elem, type, func);
- fn.apply(this, arguments);
- };
-
- // copy the guid to the new function so it can removed using the original function's ID
- func.guid = fn.guid = fn.guid || newGUID();
- on(elem, type, func);
- }
-
- /**
- * Trigger a listener only once and then turn if off for all
- * configured events
- *
- * @param {Element|Object} elem
- * Element or object to bind to.
- *
- * @param {string|string[]} type
- * Name/type of event
- *
- * @param {Event~EventListener} fn
- * Event listener function
- */
- function any(elem, type, fn) {
- const func = function () {
- off(elem, type, func);
- fn.apply(this, arguments);
- };
-
- // copy the guid to the new function so it can removed using the original function's ID
- func.guid = fn.guid = fn.guid || newGUID();
-
- // multiple ons, but one off for everything
- on(elem, type, func);
- }
-
- var Events = /*#__PURE__*/Object.freeze({
- __proto__: null,
- fixEvent: fixEvent,
- on: on,
- off: off,
- trigger: trigger,
- one: one,
- any: any
- });
-
- /**
- * @file fn.js
- * @module fn
- */
- const UPDATE_REFRESH_INTERVAL = 30;
-
- /**
- * A private, internal-only function for changing the context of a function.
- *
- * It also stores a unique id on the function so it can be easily removed from
- * events.
- *
- * @private
- * @function
- * @param {*} context
- * The object to bind as scope.
- *
- * @param {Function} fn
- * The function to be bound to a scope.
- *
- * @param {number} [uid]
- * An optional unique ID for the function to be set
- *
- * @return {Function}
- * The new function that will be bound into the context given
- */
- const bind_ = function (context, fn, uid) {
- // Make sure the function has a unique ID
- if (!fn.guid) {
- fn.guid = newGUID();
- }
-
- // Create the new function that changes the context
- const bound = fn.bind(context);
-
- // Allow for the ability to individualize this function
- // Needed in the case where multiple objects might share the same prototype
- // IF both items add an event listener with the same function, then you try to remove just one
- // it will remove both because they both have the same guid.
- // when using this, you need to use the bind method when you remove the listener as well.
- // currently used in text tracks
- bound.guid = uid ? uid + '_' + fn.guid : fn.guid;
- return bound;
- };
-
- /**
- * Wraps the given function, `fn`, with a new function that only invokes `fn`
- * at most once per every `wait` milliseconds.
- *
- * @function
- * @param {Function} fn
- * The function to be throttled.
- *
- * @param {number} wait
- * The number of milliseconds by which to throttle.
- *
- * @return {Function}
- */
- const throttle = function (fn, wait) {
- let last = window.performance.now();
- const throttled = function (...args) {
- const now = window.performance.now();
- if (now - last >= wait) {
- fn(...args);
- last = now;
- }
- };
- return throttled;
- };
-
- /**
- * Creates a debounced function that delays invoking `func` until after `wait`
- * milliseconds have elapsed since the last time the debounced function was
- * invoked.
- *
- * Inspired by lodash and underscore implementations.
- *
- * @function
- * @param {Function} func
- * The function to wrap with debounce behavior.
- *
- * @param {number} wait
- * The number of milliseconds to wait after the last invocation.
- *
- * @param {boolean} [immediate]
- * Whether or not to invoke the function immediately upon creation.
- *
- * @param {Object} [context=window]
- * The "context" in which the debounced function should debounce. For
- * example, if this function should be tied to a Video.js player,
- * the player can be passed here. Alternatively, defaults to the
- * global `window` object.
- *
- * @return {Function}
- * A debounced function.
- */
- const debounce = function (func, wait, immediate, context = window) {
- let timeout;
- const cancel = () => {
- context.clearTimeout(timeout);
- timeout = null;
- };
-
- /* eslint-disable consistent-this */
- const debounced = function () {
- const self = this;
- const args = arguments;
- let later = function () {
- timeout = null;
- later = null;
- if (!immediate) {
- func.apply(self, args);
- }
- };
- if (!timeout && immediate) {
- func.apply(self, args);
- }
- context.clearTimeout(timeout);
- timeout = context.setTimeout(later, wait);
- };
- /* eslint-enable consistent-this */
-
- debounced.cancel = cancel;
- return debounced;
- };
-
- var Fn = /*#__PURE__*/Object.freeze({
- __proto__: null,
- UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL,
- bind_: bind_,
- throttle: throttle,
- debounce: debounce
- });
-
- /**
- * @file src/js/event-target.js
- */
- let EVENT_MAP;
-
- /**
- * `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It
- * adds shorthand functions that wrap around lengthy functions. For example:
- * the `on` function is a wrapper around `addEventListener`.
- *
- * @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}
- * @class EventTarget
- */
- class EventTarget$2 {
- /**
- * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
- * function that will get called when an event with a certain name gets triggered.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to call with `EventTarget`s
- */
- on(type, fn) {
- // Remove the addEventListener alias before calling Events.on
- // so we don't get into an infinite type loop
- const ael = this.addEventListener;
- this.addEventListener = () => {};
- on(this, type, fn);
- this.addEventListener = ael;
- }
- /**
- * Removes an `event listener` for a specific event from an instance of `EventTarget`.
- * This makes it so that the `event listener` will no longer get called when the
- * named event happens.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to remove.
- */
- off(type, fn) {
- off(this, type, fn);
- }
- /**
- * This function will add an `event listener` that gets triggered only once. After the
- * first trigger it will get removed. This is like adding an `event listener`
- * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to be called once for each event name.
- */
- one(type, fn) {
- // Remove the addEventListener aliasing Events.on
- // so we don't get into an infinite type loop
- const ael = this.addEventListener;
- this.addEventListener = () => {};
- one(this, type, fn);
- this.addEventListener = ael;
- }
- /**
- * This function will add an `event listener` that gets triggered only once and is
- * removed from all events. This is like adding an array of `event listener`s
- * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
- * first time it is triggered.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to be called once for each event name.
- */
- any(type, fn) {
- // Remove the addEventListener aliasing Events.on
- // so we don't get into an infinite type loop
- const ael = this.addEventListener;
- this.addEventListener = () => {};
- any(this, type, fn);
- this.addEventListener = ael;
- }
- /**
- * This function causes an event to happen. This will then cause any `event listeners`
- * that are waiting for that event, to get called. If there are no `event listeners`
- * for an event then nothing will happen.
- *
- * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
- * Trigger will also call the `on` + `uppercaseEventName` function.
- *
- * Example:
- * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
- * `onClick` if it exists.
- *
- * @param {string|EventTarget~Event|Object} event
- * The name of the event, an `Event`, or an object with a key of type set to
- * an event name.
- */
- trigger(event) {
- const type = event.type || event;
-
- // deprecation
- // In a future version we should default target to `this`
- // similar to how we default the target to `elem` in
- // `Events.trigger`. Right now the default `target` will be
- // `document` due to the `Event.fixEvent` call.
- if (typeof event === 'string') {
- event = {
- type
- };
- }
- event = fixEvent(event);
- if (this.allowedEvents_[type] && this['on' + type]) {
- this['on' + type](event);
- }
- trigger(this, event);
- }
- queueTrigger(event) {
- // only set up EVENT_MAP if it'll be used
- if (!EVENT_MAP) {
- EVENT_MAP = new Map();
- }
- const type = event.type || event;
- let map = EVENT_MAP.get(this);
- if (!map) {
- map = new Map();
- EVENT_MAP.set(this, map);
- }
- const oldTimeout = map.get(type);
- map.delete(type);
- window.clearTimeout(oldTimeout);
- const timeout = window.setTimeout(() => {
- map.delete(type);
- // if we cleared out all timeouts for the current target, delete its map
- if (map.size === 0) {
- map = null;
- EVENT_MAP.delete(this);
- }
- this.trigger(event);
- }, 0);
- map.set(type, timeout);
- }
- }
-
- /**
- * A Custom DOM event.
- *
- * @typedef {CustomEvent} Event
- * @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}
- */
-
- /**
- * All event listeners should follow the following format.
- *
- * @callback EventListener
- * @this {EventTarget}
- *
- * @param {Event} event
- * the event that triggered this function
- *
- * @param {Object} [hash]
- * hash of data sent during the event
- */
-
- /**
- * An object containing event names as keys and booleans as values.
- *
- * > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}
- * will have extra functionality. See that function for more information.
- *
- * @property EventTarget.prototype.allowedEvents_
- * @protected
- */
- EventTarget$2.prototype.allowedEvents_ = {};
-
- /**
- * An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic
- * the standard DOM API.
- *
- * @function
- * @see {@link EventTarget#on}
- */
- EventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;
-
- /**
- * An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic
- * the standard DOM API.
- *
- * @function
- * @see {@link EventTarget#off}
- */
- EventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;
-
- /**
- * An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic
- * the standard DOM API.
- *
- * @function
- * @see {@link EventTarget#trigger}
- */
- EventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;
-
- /**
- * @file mixins/evented.js
- * @module evented
- */
- const objName = obj => {
- if (typeof obj.name === 'function') {
- return obj.name();
- }
- if (typeof obj.name === 'string') {
- return obj.name;
- }
- if (obj.name_) {
- return obj.name_;
- }
- if (obj.constructor && obj.constructor.name) {
- return obj.constructor.name;
- }
- return typeof obj;
- };
-
- /**
- * Returns whether or not an object has had the evented mixin applied.
- *
- * @param {Object} object
- * An object to test.
- *
- * @return {boolean}
- * Whether or not the object appears to be evented.
- */
- const isEvented = object => object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function');
-
- /**
- * Adds a callback to run after the evented mixin applied.
- *
- * @param {Object} target
- * An object to Add
- * @param {Function} callback
- * The callback to run.
- */
- const addEventedCallback = (target, callback) => {
- if (isEvented(target)) {
- callback();
- } else {
- if (!target.eventedCallbacks) {
- target.eventedCallbacks = [];
- }
- target.eventedCallbacks.push(callback);
- }
- };
-
- /**
- * Whether a value is a valid event type - non-empty string or array.
- *
- * @private
- * @param {string|Array} type
- * The type value to test.
- *
- * @return {boolean}
- * Whether or not the type is a valid event type.
- */
- const isValidEventType = type =>
- // The regex here verifies that the `type` contains at least one non-
- // whitespace character.
- typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length;
-
- /**
- * Validates a value to determine if it is a valid event target. Throws if not.
- *
- * @private
- * @throws {Error}
- * If the target does not appear to be a valid event target.
- *
- * @param {Object} target
- * The object to test.
- *
- * @param {Object} obj
- * The evented object we are validating for
- *
- * @param {string} fnName
- * The name of the evented mixin function that called this.
- */
- const validateTarget = (target, obj, fnName) => {
- if (!target || !target.nodeName && !isEvented(target)) {
- throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`);
- }
- };
-
- /**
- * Validates a value to determine if it is a valid event target. Throws if not.
- *
- * @private
- * @throws {Error}
- * If the type does not appear to be a valid event type.
- *
- * @param {string|Array} type
- * The type to test.
- *
- * @param {Object} obj
- * The evented object we are validating for
- *
- * @param {string} fnName
- * The name of the evented mixin function that called this.
- */
- const validateEventType = (type, obj, fnName) => {
- if (!isValidEventType(type)) {
- throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`);
- }
- };
-
- /**
- * Validates a value to determine if it is a valid listener. Throws if not.
- *
- * @private
- * @throws {Error}
- * If the listener is not a function.
- *
- * @param {Function} listener
- * The listener to test.
- *
- * @param {Object} obj
- * The evented object we are validating for
- *
- * @param {string} fnName
- * The name of the evented mixin function that called this.
- */
- const validateListener = (listener, obj, fnName) => {
- if (typeof listener !== 'function') {
- throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`);
- }
- };
-
- /**
- * Takes an array of arguments given to `on()` or `one()`, validates them, and
- * normalizes them into an object.
- *
- * @private
- * @param {Object} self
- * The evented object on which `on()` or `one()` was called. This
- * object will be bound as the `this` value for the listener.
- *
- * @param {Array} args
- * An array of arguments passed to `on()` or `one()`.
- *
- * @param {string} fnName
- * The name of the evented mixin function that called this.
- *
- * @return {Object}
- * An object containing useful values for `on()` or `one()` calls.
- */
- const normalizeListenArgs = (self, args, fnName) => {
- // If the number of arguments is less than 3, the target is always the
- // evented object itself.
- const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;
- let target;
- let type;
- let listener;
- if (isTargetingSelf) {
- target = self.eventBusEl_;
-
- // Deal with cases where we got 3 arguments, but we are still listening to
- // the evented object itself.
- if (args.length >= 3) {
- args.shift();
- }
- [type, listener] = args;
- } else {
- [target, type, listener] = args;
- }
- validateTarget(target, self, fnName);
- validateEventType(type, self, fnName);
- validateListener(listener, self, fnName);
- listener = bind_(self, listener);
- return {
- isTargetingSelf,
- target,
- type,
- listener
- };
- };
-
- /**
- * Adds the listener to the event type(s) on the target, normalizing for
- * the type of target.
- *
- * @private
- * @param {Element|Object} target
- * A DOM node or evented object.
- *
- * @param {string} method
- * The event binding method to use ("on" or "one").
- *
- * @param {string|Array} type
- * One or more event type(s).
- *
- * @param {Function} listener
- * A listener function.
- */
- const listen = (target, method, type, listener) => {
- validateTarget(target, target, method);
- if (target.nodeName) {
- Events[method](target, type, listener);
- } else {
- target[method](type, listener);
- }
- };
-
- /**
- * Contains methods that provide event capabilities to an object which is passed
- * to {@link module:evented|evented}.
- *
- * @mixin EventedMixin
- */
- const EventedMixin = {
- /**
- * Add a listener to an event (or events) on this object or another evented
- * object.
- *
- * @param {string|Array|Element|Object} targetOrType
- * If this is a string or array, it represents the event type(s)
- * that will trigger the listener.
- *
- * Another evented object can be passed here instead, which will
- * cause the listener to listen for events on _that_ object.
- *
- * In either case, the listener's `this` value will be bound to
- * this object.
- *
- * @param {string|Array|Function} typeOrListener
- * If the first argument was a string or array, this should be the
- * listener function. Otherwise, this is a string or array of event
- * type(s).
- *
- * @param {Function} [listener]
- * If the first argument was another evented object, this will be
- * the listener function.
- */
- on(...args) {
- const {
- isTargetingSelf,
- target,
- type,
- listener
- } = normalizeListenArgs(this, args, 'on');
- listen(target, 'on', type, listener);
-
- // If this object is listening to another evented object.
- if (!isTargetingSelf) {
- // If this object is disposed, remove the listener.
- const removeListenerOnDispose = () => this.off(target, type, listener);
-
- // Use the same function ID as the listener so we can remove it later it
- // using the ID of the original listener.
- removeListenerOnDispose.guid = listener.guid;
-
- // Add a listener to the target's dispose event as well. This ensures
- // that if the target is disposed BEFORE this object, we remove the
- // removal listener that was just added. Otherwise, we create a memory leak.
- const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose);
-
- // Use the same function ID as the listener so we can remove it later
- // it using the ID of the original listener.
- removeRemoverOnTargetDispose.guid = listener.guid;
- listen(this, 'on', 'dispose', removeListenerOnDispose);
- listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);
- }
- },
- /**
- * Add a listener to an event (or events) on this object or another evented
- * object. The listener will be called once per event and then removed.
- *
- * @param {string|Array|Element|Object} targetOrType
- * If this is a string or array, it represents the event type(s)
- * that will trigger the listener.
- *
- * Another evented object can be passed here instead, which will
- * cause the listener to listen for events on _that_ object.
- *
- * In either case, the listener's `this` value will be bound to
- * this object.
- *
- * @param {string|Array|Function} typeOrListener
- * If the first argument was a string or array, this should be the
- * listener function. Otherwise, this is a string or array of event
- * type(s).
- *
- * @param {Function} [listener]
- * If the first argument was another evented object, this will be
- * the listener function.
- */
- one(...args) {
- const {
- isTargetingSelf,
- target,
- type,
- listener
- } = normalizeListenArgs(this, args, 'one');
-
- // Targeting this evented object.
- if (isTargetingSelf) {
- listen(target, 'one', type, listener);
-
- // Targeting another evented object.
- } else {
- // TODO: This wrapper is incorrect! It should only
- // remove the wrapper for the event type that called it.
- // Instead all listeners are removed on the first trigger!
- // see https://github.com/videojs/video.js/issues/5962
- const wrapper = (...largs) => {
- this.off(target, type, wrapper);
- listener.apply(null, largs);
- };
-
- // Use the same function ID as the listener so we can remove it later
- // it using the ID of the original listener.
- wrapper.guid = listener.guid;
- listen(target, 'one', type, wrapper);
- }
- },
- /**
- * Add a listener to an event (or events) on this object or another evented
- * object. The listener will only be called once for the first event that is triggered
- * then removed.
- *
- * @param {string|Array|Element|Object} targetOrType
- * If this is a string or array, it represents the event type(s)
- * that will trigger the listener.
- *
- * Another evented object can be passed here instead, which will
- * cause the listener to listen for events on _that_ object.
- *
- * In either case, the listener's `this` value will be bound to
- * this object.
- *
- * @param {string|Array|Function} typeOrListener
- * If the first argument was a string or array, this should be the
- * listener function. Otherwise, this is a string or array of event
- * type(s).
- *
- * @param {Function} [listener]
- * If the first argument was another evented object, this will be
- * the listener function.
- */
- any(...args) {
- const {
- isTargetingSelf,
- target,
- type,
- listener
- } = normalizeListenArgs(this, args, 'any');
-
- // Targeting this evented object.
- if (isTargetingSelf) {
- listen(target, 'any', type, listener);
-
- // Targeting another evented object.
- } else {
- const wrapper = (...largs) => {
- this.off(target, type, wrapper);
- listener.apply(null, largs);
- };
-
- // Use the same function ID as the listener so we can remove it later
- // it using the ID of the original listener.
- wrapper.guid = listener.guid;
- listen(target, 'any', type, wrapper);
- }
- },
- /**
- * Removes listener(s) from event(s) on an evented object.
- *
- * @param {string|Array|Element|Object} [targetOrType]
- * If this is a string or array, it represents the event type(s).
- *
- * Another evented object can be passed here instead, in which case
- * ALL 3 arguments are _required_.
- *
- * @param {string|Array|Function} [typeOrListener]
- * If the first argument was a string or array, this may be the
- * listener function. Otherwise, this is a string or array of event
- * type(s).
- *
- * @param {Function} [listener]
- * If the first argument was another evented object, this will be
- * the listener function; otherwise, _all_ listeners bound to the
- * event type(s) will be removed.
- */
- off(targetOrType, typeOrListener, listener) {
- // Targeting this evented object.
- if (!targetOrType || isValidEventType(targetOrType)) {
- off(this.eventBusEl_, targetOrType, typeOrListener);
-
- // Targeting another evented object.
- } else {
- const target = targetOrType;
- const type = typeOrListener;
-
- // Fail fast and in a meaningful way!
- validateTarget(target, this, 'off');
- validateEventType(type, this, 'off');
- validateListener(listener, this, 'off');
-
- // Ensure there's at least a guid, even if the function hasn't been used
- listener = bind_(this, listener);
-
- // Remove the dispose listener on this evented object, which was given
- // the same guid as the event listener in on().
- this.off('dispose', listener);
- if (target.nodeName) {
- off(target, type, listener);
- off(target, 'dispose', listener);
- } else if (isEvented(target)) {
- target.off(type, listener);
- target.off('dispose', listener);
- }
- }
- },
- /**
- * Fire an event on this evented object, causing its listeners to be called.
- *
- * @param {string|Object} event
- * An event type or an object with a type property.
- *
- * @param {Object} [hash]
- * An additional object to pass along to listeners.
- *
- * @return {boolean}
- * Whether or not the default behavior was prevented.
- */
- trigger(event, hash) {
- validateTarget(this.eventBusEl_, this, 'trigger');
- const type = event && typeof event !== 'string' ? event.type : event;
- if (!isValidEventType(type)) {
- throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.');
- }
- return trigger(this.eventBusEl_, event, hash);
- }
- };
-
- /**
- * Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.
- *
- * @param {Object} target
- * The object to which to add event methods.
- *
- * @param {Object} [options={}]
- * Options for customizing the mixin behavior.
- *
- * @param {string} [options.eventBusKey]
- * By default, adds a `eventBusEl_` DOM element to the target object,
- * which is used as an event bus. If the target object already has a
- * DOM element that should be used, pass its key here.
- *
- * @return {Object}
- * The target object.
- */
- function evented(target, options = {}) {
- const {
- eventBusKey
- } = options;
-
- // Set or create the eventBusEl_.
- if (eventBusKey) {
- if (!target[eventBusKey].nodeName) {
- throw new Error(`The eventBusKey "${eventBusKey}" does not refer to an element.`);
- }
- target.eventBusEl_ = target[eventBusKey];
- } else {
- target.eventBusEl_ = createEl('span', {
- className: 'vjs-event-bus'
- });
- }
- Object.assign(target, EventedMixin);
- if (target.eventedCallbacks) {
- target.eventedCallbacks.forEach(callback => {
- callback();
- });
- }
-
- // When any evented object is disposed, it removes all its listeners.
- target.on('dispose', () => {
- target.off();
- [target, target.el_, target.eventBusEl_].forEach(function (val) {
- if (val && DomData.has(val)) {
- DomData.delete(val);
- }
- });
- window.setTimeout(() => {
- target.eventBusEl_ = null;
- }, 0);
- });
- return target;
- }
-
- /**
- * @file mixins/stateful.js
- * @module stateful
- */
-
- /**
- * Contains methods that provide statefulness to an object which is passed
- * to {@link module:stateful}.
- *
- * @mixin StatefulMixin
- */
- const StatefulMixin = {
- /**
- * A hash containing arbitrary keys and values representing the state of
- * the object.
- *
- * @type {Object}
- */
- state: {},
- /**
- * Set the state of an object by mutating its
- * {@link module:stateful~StatefulMixin.state|state} object in place.
- *
- * @fires module:stateful~StatefulMixin#statechanged
- * @param {Object|Function} stateUpdates
- * A new set of properties to shallow-merge into the plugin state.
- * Can be a plain object or a function returning a plain object.
- *
- * @return {Object|undefined}
- * An object containing changes that occurred. If no changes
- * occurred, returns `undefined`.
- */
- setState(stateUpdates) {
- // Support providing the `stateUpdates` state as a function.
- if (typeof stateUpdates === 'function') {
- stateUpdates = stateUpdates();
- }
- let changes;
- each(stateUpdates, (value, key) => {
- // Record the change if the value is different from what's in the
- // current state.
- if (this.state[key] !== value) {
- changes = changes || {};
- changes[key] = {
- from: this.state[key],
- to: value
- };
- }
- this.state[key] = value;
- });
-
- // Only trigger "statechange" if there were changes AND we have a trigger
- // function. This allows us to not require that the target object be an
- // evented object.
- if (changes && isEvented(this)) {
- /**
- * An event triggered on an object that is both
- * {@link module:stateful|stateful} and {@link module:evented|evented}
- * indicating that its state has changed.
- *
- * @event module:stateful~StatefulMixin#statechanged
- * @type {Object}
- * @property {Object} changes
- * A hash containing the properties that were changed and
- * the values they were changed `from` and `to`.
- */
- this.trigger({
- changes,
- type: 'statechanged'
- });
- }
- return changes;
- }
- };
-
- /**
- * Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target
- * object.
- *
- * If the target object is {@link module:evented|evented} and has a
- * `handleStateChanged` method, that method will be automatically bound to the
- * `statechanged` event on itself.
- *
- * @param {Object} target
- * The object to be made stateful.
- *
- * @param {Object} [defaultState]
- * A default set of properties to populate the newly-stateful object's
- * `state` property.
- *
- * @return {Object}
- * Returns the `target`.
- */
- function stateful(target, defaultState) {
- Object.assign(target, StatefulMixin);
-
- // This happens after the mixing-in because we need to replace the `state`
- // added in that step.
- target.state = Object.assign({}, target.state, defaultState);
-
- // Auto-bind the `handleStateChanged` method of the target object if it exists.
- if (typeof target.handleStateChanged === 'function' && isEvented(target)) {
- target.on('statechanged', target.handleStateChanged);
- }
- return target;
- }
-
- /**
- * @file str.js
- * @module to-lower-case
- */
-
- /**
- * Lowercase the first letter of a string.
- *
- * @param {string} string
- * String to be lowercased
- *
- * @return {string}
- * The string with a lowercased first letter
- */
- const toLowerCase = function (string) {
- if (typeof string !== 'string') {
- return string;
- }
- return string.replace(/./, w => w.toLowerCase());
- };
-
- /**
- * Uppercase the first letter of a string.
- *
- * @param {string} string
- * String to be uppercased
- *
- * @return {string}
- * The string with an uppercased first letter
- */
- const toTitleCase$1 = function (string) {
- if (typeof string !== 'string') {
- return string;
- }
- return string.replace(/./, w => w.toUpperCase());
- };
-
- /**
- * Compares the TitleCase versions of the two strings for equality.
- *
- * @param {string} str1
- * The first string to compare
- *
- * @param {string} str2
- * The second string to compare
- *
- * @return {boolean}
- * Whether the TitleCase versions of the strings are equal
- */
- const titleCaseEquals = function (str1, str2) {
- return toTitleCase$1(str1) === toTitleCase$1(str2);
- };
-
- var Str = /*#__PURE__*/Object.freeze({
- __proto__: null,
- toLowerCase: toLowerCase,
- toTitleCase: toTitleCase$1,
- titleCaseEquals: titleCaseEquals
- });
-
- var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
-
- function unwrapExports (x) {
- return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
- }
-
- function createCommonjsModule(fn, module) {
- return module = { exports: {} }, fn(module, module.exports), module.exports;
- }
-
- var keycode = createCommonjsModule(function (module, exports) {
- // Source: http://jsfiddle.net/vWx8V/
- // http://stackoverflow.com/questions/5603195/full-list-of-javascript-keycodes
-
- /**
- * Conenience method returns corresponding value for given keyName or keyCode.
- *
- * @param {Mixed} keyCode {Number} or keyName {String}
- * @return {Mixed}
- * @api public
- */
-
- function keyCode(searchInput) {
- // Keyboard Events
- if (searchInput && 'object' === typeof searchInput) {
- var hasKeyCode = searchInput.which || searchInput.keyCode || searchInput.charCode;
- if (hasKeyCode) searchInput = hasKeyCode;
- }
-
- // Numbers
- if ('number' === typeof searchInput) return names[searchInput];
-
- // Everything else (cast to string)
- var search = String(searchInput);
-
- // check codes
- var foundNamedKey = codes[search.toLowerCase()];
- if (foundNamedKey) return foundNamedKey;
-
- // check aliases
- var foundNamedKey = aliases[search.toLowerCase()];
- if (foundNamedKey) return foundNamedKey;
-
- // weird character?
- if (search.length === 1) return search.charCodeAt(0);
- return undefined;
- }
-
- /**
- * Compares a keyboard event with a given keyCode or keyName.
- *
- * @param {Event} event Keyboard event that should be tested
- * @param {Mixed} keyCode {Number} or keyName {String}
- * @return {Boolean}
- * @api public
- */
- keyCode.isEventKey = function isEventKey(event, nameOrCode) {
- if (event && 'object' === typeof event) {
- var keyCode = event.which || event.keyCode || event.charCode;
- if (keyCode === null || keyCode === undefined) {
- return false;
- }
- if (typeof nameOrCode === 'string') {
- // check codes
- var foundNamedKey = codes[nameOrCode.toLowerCase()];
- if (foundNamedKey) {
- return foundNamedKey === keyCode;
- }
-
- // check aliases
- var foundNamedKey = aliases[nameOrCode.toLowerCase()];
- if (foundNamedKey) {
- return foundNamedKey === keyCode;
- }
- } else if (typeof nameOrCode === 'number') {
- return nameOrCode === keyCode;
- }
- return false;
- }
- };
- exports = module.exports = keyCode;
-
- /**
- * Get by name
- *
- * exports.code['enter'] // => 13
- */
-
- var codes = exports.code = exports.codes = {
- 'backspace': 8,
- 'tab': 9,
- 'enter': 13,
- 'shift': 16,
- 'ctrl': 17,
- 'alt': 18,
- 'pause/break': 19,
- 'caps lock': 20,
- 'esc': 27,
- 'space': 32,
- 'page up': 33,
- 'page down': 34,
- 'end': 35,
- 'home': 36,
- 'left': 37,
- 'up': 38,
- 'right': 39,
- 'down': 40,
- 'insert': 45,
- 'delete': 46,
- 'command': 91,
- 'left command': 91,
- 'right command': 93,
- 'numpad *': 106,
- 'numpad +': 107,
- 'numpad -': 109,
- 'numpad .': 110,
- 'numpad /': 111,
- 'num lock': 144,
- 'scroll lock': 145,
- 'my computer': 182,
- 'my calculator': 183,
- ';': 186,
- '=': 187,
- ',': 188,
- '-': 189,
- '.': 190,
- '/': 191,
- '`': 192,
- '[': 219,
- '\\': 220,
- ']': 221,
- "'": 222
- };
-
- // Helper aliases
-
- var aliases = exports.aliases = {
- 'windows': 91,
- '⇧': 16,
- '⌥': 18,
- '⌃': 17,
- '⌘': 91,
- 'ctl': 17,
- 'control': 17,
- 'option': 18,
- 'pause': 19,
- 'break': 19,
- 'caps': 20,
- 'return': 13,
- 'escape': 27,
- 'spc': 32,
- 'spacebar': 32,
- 'pgup': 33,
- 'pgdn': 34,
- 'ins': 45,
- 'del': 46,
- 'cmd': 91
- };
-
- /*!
- * Programatically add the following
- */
-
- // lower case chars
- for (i = 97; i < 123; i++) codes[String.fromCharCode(i)] = i - 32;
-
- // numbers
- for (var i = 48; i < 58; i++) codes[i - 48] = i;
-
- // function keys
- for (i = 1; i < 13; i++) codes['f' + i] = i + 111;
-
- // numpad keys
- for (i = 0; i < 10; i++) codes['numpad ' + i] = i + 96;
-
- /**
- * Get by code
- *
- * exports.name[13] // => 'Enter'
- */
-
- var names = exports.names = exports.title = {}; // title for backward compat
-
- // Create reverse mapping
- for (i in codes) names[codes[i]] = i;
-
- // Add aliases
- for (var alias in aliases) {
- codes[alias] = aliases[alias];
- }
- });
- keycode.code;
- keycode.codes;
- keycode.aliases;
- keycode.names;
- keycode.title;
-
- /**
- * Player Component - Base class for all UI objects
- *
- * @file component.js
- */
-
- /**
- * Base class for all UI Components.
- * Components are UI objects which represent both a javascript object and an element
- * in the DOM. They can be children of other components, and can have
- * children themselves.
- *
- * Components can also use methods from {@link EventTarget}
- */
- class Component$1 {
- /**
- * A callback that is called when a component is ready. Does not have any
- * parameters and any callback value will be ignored.
- *
- * @callback ReadyCallback
- * @this Component
- */
-
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of component options.
- *
- * @param {Object[]} [options.children]
- * An array of children objects to initialize this component with. Children objects have
- * a name property that will be used if more than one component of the same type needs to be
- * added.
- *
- * @param {string} [options.className]
- * A class or space separated list of classes to add the component
- *
- * @param {ReadyCallback} [ready]
- * Function that gets called when the `Component` is ready.
- */
- constructor(player, options, ready) {
- // The component might be the player itself and we can't pass `this` to super
- if (!player && this.play) {
- this.player_ = player = this; // eslint-disable-line
- } else {
- this.player_ = player;
- }
- this.isDisposed_ = false;
-
- // Hold the reference to the parent component via `addChild` method
- this.parentComponent_ = null;
-
- // Make a copy of prototype.options_ to protect against overriding defaults
- this.options_ = merge$2({}, this.options_);
-
- // Updated options with supplied options
- options = this.options_ = merge$2(this.options_, options);
-
- // Get ID from options or options element if one is supplied
- this.id_ = options.id || options.el && options.el.id;
-
- // If there was no ID from the options, generate one
- if (!this.id_) {
- // Don't require the player ID function in the case of mock players
- const id = player && player.id && player.id() || 'no_player';
- this.id_ = `${id}_component_${newGUID()}`;
- }
- this.name_ = options.name || null;
-
- // Create element if one wasn't provided in options
- if (options.el) {
- this.el_ = options.el;
- } else if (options.createEl !== false) {
- this.el_ = this.createEl();
- }
- if (options.className && this.el_) {
- options.className.split(' ').forEach(c => this.addClass(c));
- }
-
- // Remove the placeholder event methods. If the component is evented, the
- // real methods are added next
- ['on', 'off', 'one', 'any', 'trigger'].forEach(fn => {
- this[fn] = undefined;
- });
-
- // if evented is anything except false, we want to mixin in evented
- if (options.evented !== false) {
- // Make this an evented object and use `el_`, if available, as its event bus
- evented(this, {
- eventBusKey: this.el_ ? 'el_' : null
- });
- this.handleLanguagechange = this.handleLanguagechange.bind(this);
- this.on(this.player_, 'languagechange', this.handleLanguagechange);
- }
- stateful(this, this.constructor.defaultState);
- this.children_ = [];
- this.childIndex_ = {};
- this.childNameIndex_ = {};
- this.setTimeoutIds_ = new Set();
- this.setIntervalIds_ = new Set();
- this.rafIds_ = new Set();
- this.namedRafs_ = new Map();
- this.clearingTimersOnDispose_ = false;
-
- // Add any child components in options
- if (options.initChildren !== false) {
- this.initChildren();
- }
-
- // Don't want to trigger ready here or it will go before init is actually
- // finished for all children that run this constructor
- this.ready(ready);
- if (options.reportTouchActivity !== false) {
- this.enableTouchActivity();
- }
- }
-
- // `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions.
- // They are replaced or removed in the constructor
-
- /**
- * Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
- * function that will get called when an event with a certain name gets triggered.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to call with `EventTarget`s
- */
- on(type, fn) {}
-
- /**
- * Removes an `event listener` for a specific event from an instance of `EventTarget`.
- * This makes it so that the `event listener` will no longer get called when the
- * named event happens.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} [fn]
- * The function to remove. If not specified, all listeners managed by Video.js will be removed.
- */
- off(type, fn) {}
-
- /**
- * This function will add an `event listener` that gets triggered only once. After the
- * first trigger it will get removed. This is like adding an `event listener`
- * with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to be called once for each event name.
- */
- one(type, fn) {}
-
- /**
- * This function will add an `event listener` that gets triggered only once and is
- * removed from all events. This is like adding an array of `event listener`s
- * with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
- * first time it is triggered.
- *
- * @param {string|string[]} type
- * An event name or an array of event names.
- *
- * @param {Function} fn
- * The function to be called once for each event name.
- */
- any(type, fn) {}
-
- /**
- * This function causes an event to happen. This will then cause any `event listeners`
- * that are waiting for that event, to get called. If there are no `event listeners`
- * for an event then nothing will happen.
- *
- * If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
- * Trigger will also call the `on` + `uppercaseEventName` function.
- *
- * Example:
- * 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
- * `onClick` if it exists.
- *
- * @param {string|Event|Object} event
- * The name of the event, an `Event`, or an object with a key of type set to
- * an event name.
- *
- * @param {Object} [hash]
- * Optionally extra argument to pass through to an event listener
- */
- trigger(event, hash) {}
-
- /**
- * Dispose of the `Component` and all child components.
- *
- * @fires Component#dispose
- *
- * @param {Object} options
- * @param {Element} options.originalEl element with which to replace player element
- */
- dispose(options = {}) {
- // Bail out if the component has already been disposed.
- if (this.isDisposed_) {
- return;
- }
- if (this.readyQueue_) {
- this.readyQueue_.length = 0;
- }
-
- /**
- * Triggered when a `Component` is disposed.
- *
- * @event Component#dispose
- * @type {Event}
- *
- * @property {boolean} [bubbles=false]
- * set to false so that the dispose event does not
- * bubble up
- */
- this.trigger({
- type: 'dispose',
- bubbles: false
- });
- this.isDisposed_ = true;
-
- // Dispose all children.
- if (this.children_) {
- for (let i = this.children_.length - 1; i >= 0; i--) {
- if (this.children_[i].dispose) {
- this.children_[i].dispose();
- }
- }
- }
-
- // Delete child references
- this.children_ = null;
- this.childIndex_ = null;
- this.childNameIndex_ = null;
- this.parentComponent_ = null;
- if (this.el_) {
- // Remove element from DOM
- if (this.el_.parentNode) {
- if (options.restoreEl) {
- this.el_.parentNode.replaceChild(options.restoreEl, this.el_);
- } else {
- this.el_.parentNode.removeChild(this.el_);
- }
- }
- this.el_ = null;
- }
-
- // remove reference to the player after disposing of the element
- this.player_ = null;
- }
-
- /**
- * Determine whether or not this component has been disposed.
- *
- * @return {boolean}
- * If the component has been disposed, will be `true`. Otherwise, `false`.
- */
- isDisposed() {
- return Boolean(this.isDisposed_);
- }
-
- /**
- * Return the {@link Player} that the `Component` has attached to.
- *
- * @return { import('./player').default }
- * The player that this `Component` has attached to.
- */
- player() {
- return this.player_;
- }
-
- /**
- * Deep merge of options objects with new options.
- * > Note: When both `obj` and `options` contain properties whose values are objects.
- * The two properties get merged using {@link module:obj.merge}
- *
- * @param {Object} obj
- * The object that contains new options.
- *
- * @return {Object}
- * A new object of `this.options_` and `obj` merged together.
- */
- options(obj) {
- if (!obj) {
- return this.options_;
- }
- this.options_ = merge$2(this.options_, obj);
- return this.options_;
- }
-
- /**
- * Get the `Component`s DOM element
- *
- * @return {Element}
- * The DOM element for this `Component`.
- */
- el() {
- return this.el_;
- }
-
- /**
- * Create the `Component`s DOM element.
- *
- * @param {string} [tagName]
- * Element's DOM node type. e.g. 'div'
- *
- * @param {Object} [properties]
- * An object of properties that should be set.
- *
- * @param {Object} [attributes]
- * An object of attributes that should be set.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl(tagName, properties, attributes) {
- return createEl(tagName, properties, attributes);
- }
-
- /**
- * Localize a string given the string in english.
- *
- * If tokens are provided, it'll try and run a simple token replacement on the provided string.
- * The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.
- *
- * If a `defaultValue` is provided, it'll use that over `string`,
- * if a value isn't found in provided language files.
- * This is useful if you want to have a descriptive key for token replacement
- * but have a succinct localized string and not require `en.json` to be included.
- *
- * Currently, it is used for the progress bar timing.
- * ```js
- * {
- * "progress bar timing: currentTime={1} duration={2}": "{1} of {2}"
- * }
- * ```
- * It is then used like so:
- * ```js
- * this.localize('progress bar timing: currentTime={1} duration{2}',
- * [this.player_.currentTime(), this.player_.duration()],
- * '{1} of {2}');
- * ```
- *
- * Which outputs something like: `01:23 of 24:56`.
- *
- *
- * @param {string} string
- * The string to localize and the key to lookup in the language files.
- * @param {string[]} [tokens]
- * If the current item has token replacements, provide the tokens here.
- * @param {string} [defaultValue]
- * Defaults to `string`. Can be a default value to use for token replacement
- * if the lookup key is needed to be separate.
- *
- * @return {string}
- * The localized string or if no localization exists the english string.
- */
- localize(string, tokens, defaultValue = string) {
- const code = this.player_.language && this.player_.language();
- const languages = this.player_.languages && this.player_.languages();
- const language = languages && languages[code];
- const primaryCode = code && code.split('-')[0];
- const primaryLang = languages && languages[primaryCode];
- let localizedString = defaultValue;
- if (language && language[string]) {
- localizedString = language[string];
- } else if (primaryLang && primaryLang[string]) {
- localizedString = primaryLang[string];
- }
- if (tokens) {
- localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) {
- const value = tokens[index - 1];
- let ret = value;
- if (typeof value === 'undefined') {
- ret = match;
- }
- return ret;
- });
- }
- return localizedString;
- }
-
- /**
- * Handles language change for the player in components. Should be overridden by sub-components.
- *
- * @abstract
- */
- handleLanguagechange() {}
-
- /**
- * Return the `Component`s DOM element. This is where children get inserted.
- * This will usually be the the same as the element returned in {@link Component#el}.
- *
- * @return {Element}
- * The content element for this `Component`.
- */
- contentEl() {
- return this.contentEl_ || this.el_;
- }
-
- /**
- * Get this `Component`s ID
- *
- * @return {string}
- * The id of this `Component`
- */
- id() {
- return this.id_;
- }
-
- /**
- * Get the `Component`s name. The name gets used to reference the `Component`
- * and is set during registration.
- *
- * @return {string}
- * The name of this `Component`.
- */
- name() {
- return this.name_;
- }
-
- /**
- * Get an array of all child components
- *
- * @return {Array}
- * The children
- */
- children() {
- return this.children_;
- }
-
- /**
- * Returns the child `Component` with the given `id`.
- *
- * @param {string} id
- * The id of the child `Component` to get.
- *
- * @return {Component|undefined}
- * The child `Component` with the given `id` or undefined.
- */
- getChildById(id) {
- return this.childIndex_[id];
- }
-
- /**
- * Returns the child `Component` with the given `name`.
- *
- * @param {string} name
- * The name of the child `Component` to get.
- *
- * @return {Component|undefined}
- * The child `Component` with the given `name` or undefined.
- */
- getChild(name) {
- if (!name) {
- return;
- }
- return this.childNameIndex_[name];
- }
-
- /**
- * Returns the descendant `Component` following the givent
- * descendant `names`. For instance ['foo', 'bar', 'baz'] would
- * try to get 'foo' on the current component, 'bar' on the 'foo'
- * component and 'baz' on the 'bar' component and return undefined
- * if any of those don't exist.
- *
- * @param {...string[]|...string} names
- * The name of the child `Component` to get.
- *
- * @return {Component|undefined}
- * The descendant `Component` following the given descendant
- * `names` or undefined.
- */
- getDescendant(...names) {
- // flatten array argument into the main array
- names = names.reduce((acc, n) => acc.concat(n), []);
- let currentChild = this;
- for (let i = 0; i < names.length; i++) {
- currentChild = currentChild.getChild(names[i]);
- if (!currentChild || !currentChild.getChild) {
- return;
- }
- }
- return currentChild;
- }
-
- /**
- * Adds an SVG icon element to another element or component.
- *
- * @param {string} iconName
- * The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html'
- *
- * @param {Element} [el=this.el()]
- * Element to set the title on. Defaults to the current Component's element.
- *
- * @return {Element}
- * The newly created icon element.
- */
- setIcon(iconName, el = this.el()) {
- // TODO: In v9 of video.js, we will want to remove font icons entirely.
- // This means this check, as well as the others throughout the code, and
- // the unecessary CSS for font icons, will need to be removed.
- // See https://github.com/videojs/video.js/pull/8260 as to which components
- // need updating.
- if (!this.player_.options_.experimentalSvgIcons) {
- return;
- }
- const xmlnsURL = 'http://www.w3.org/2000/svg';
-
- // The below creates an element in the format of:
- // <span><svg><use>....</use></svg></span>
- const iconContainer = createEl('span', {
- className: 'vjs-icon-placeholder vjs-svg-icon'
- }, {
- 'aria-hidden': 'true'
- });
- const svgEl = document.createElementNS(xmlnsURL, 'svg');
- svgEl.setAttributeNS(null, 'viewBox', '0 0 512 512');
- const useEl = document.createElementNS(xmlnsURL, 'use');
- svgEl.appendChild(useEl);
- useEl.setAttributeNS(null, 'href', `#vjs-icon-${iconName}`);
- iconContainer.appendChild(svgEl);
-
- // Replace a pre-existing icon if one exists.
- if (this.iconIsSet_) {
- el.replaceChild(iconContainer, el.querySelector('.vjs-icon-placeholder'));
- } else {
- el.appendChild(iconContainer);
- }
- this.iconIsSet_ = true;
- return iconContainer;
- }
-
- /**
- * Add a child `Component` inside the current `Component`.
- *
- * @param {string|Component} child
- * The name or instance of a child to add.
- *
- * @param {Object} [options={}]
- * The key/value store of options that will get passed to children of
- * the child.
- *
- * @param {number} [index=this.children_.length]
- * The index to attempt to add a child into.
- *
- *
- * @return {Component}
- * The `Component` that gets added as a child. When using a string the
- * `Component` will get created by this process.
- */
- addChild(child, options = {}, index = this.children_.length) {
- let component;
- let componentName;
-
- // If child is a string, create component with options
- if (typeof child === 'string') {
- componentName = toTitleCase$1(child);
- const componentClassName = options.componentClass || componentName;
-
- // Set name through options
- options.name = componentName;
-
- // Create a new object & element for this controls set
- // If there's no .player_, this is a player
- const ComponentClass = Component$1.getComponent(componentClassName);
- if (!ComponentClass) {
- throw new Error(`Component ${componentClassName} does not exist`);
- }
-
- // data stored directly on the videojs object may be
- // misidentified as a component to retain
- // backwards-compatibility with 4.x. check to make sure the
- // component class can be instantiated.
- if (typeof ComponentClass !== 'function') {
- return null;
- }
- component = new ComponentClass(this.player_ || this, options);
-
- // child is a component instance
- } else {
- component = child;
- }
- if (component.parentComponent_) {
- component.parentComponent_.removeChild(component);
- }
- this.children_.splice(index, 0, component);
- component.parentComponent_ = this;
- if (typeof component.id === 'function') {
- this.childIndex_[component.id()] = component;
- }
-
- // If a name wasn't used to create the component, check if we can use the
- // name function of the component
- componentName = componentName || component.name && toTitleCase$1(component.name());
- if (componentName) {
- this.childNameIndex_[componentName] = component;
- this.childNameIndex_[toLowerCase(componentName)] = component;
- }
-
- // Add the UI object's element to the container div (box)
- // Having an element is not required
- if (typeof component.el === 'function' && component.el()) {
- // If inserting before a component, insert before that component's element
- let refNode = null;
- if (this.children_[index + 1]) {
- // Most children are components, but the video tech is an HTML element
- if (this.children_[index + 1].el_) {
- refNode = this.children_[index + 1].el_;
- } else if (isEl(this.children_[index + 1])) {
- refNode = this.children_[index + 1];
- }
- }
- this.contentEl().insertBefore(component.el(), refNode);
- }
-
- // Return so it can stored on parent object if desired.
- return component;
- }
-
- /**
- * Remove a child `Component` from this `Component`s list of children. Also removes
- * the child `Component`s element from this `Component`s element.
- *
- * @param {Component} component
- * The child `Component` to remove.
- */
- removeChild(component) {
- if (typeof component === 'string') {
- component = this.getChild(component);
- }
- if (!component || !this.children_) {
- return;
- }
- let childFound = false;
- for (let i = this.children_.length - 1; i >= 0; i--) {
- if (this.children_[i] === component) {
- childFound = true;
- this.children_.splice(i, 1);
- break;
- }
- }
- if (!childFound) {
- return;
- }
- component.parentComponent_ = null;
- this.childIndex_[component.id()] = null;
- this.childNameIndex_[toTitleCase$1(component.name())] = null;
- this.childNameIndex_[toLowerCase(component.name())] = null;
- const compEl = component.el();
- if (compEl && compEl.parentNode === this.contentEl()) {
- this.contentEl().removeChild(component.el());
- }
- }
-
- /**
- * Add and initialize default child `Component`s based upon options.
- */
- initChildren() {
- const children = this.options_.children;
- if (children) {
- // `this` is `parent`
- const parentOptions = this.options_;
- const handleAdd = child => {
- const name = child.name;
- let opts = child.opts;
-
- // Allow options for children to be set at the parent options
- // e.g. videojs(id, { controlBar: false });
- // instead of videojs(id, { children: { controlBar: false });
- if (parentOptions[name] !== undefined) {
- opts = parentOptions[name];
- }
-
- // Allow for disabling default components
- // e.g. options['children']['posterImage'] = false
- if (opts === false) {
- return;
- }
-
- // Allow options to be passed as a simple boolean if no configuration
- // is necessary.
- if (opts === true) {
- opts = {};
- }
-
- // We also want to pass the original player options
- // to each component as well so they don't need to
- // reach back into the player for options later.
- opts.playerOptions = this.options_.playerOptions;
-
- // Create and add the child component.
- // Add a direct reference to the child by name on the parent instance.
- // If two of the same component are used, different names should be supplied
- // for each
- const newChild = this.addChild(name, opts);
- if (newChild) {
- this[name] = newChild;
- }
- };
-
- // Allow for an array of children details to passed in the options
- let workingChildren;
- const Tech = Component$1.getComponent('Tech');
- if (Array.isArray(children)) {
- workingChildren = children;
- } else {
- workingChildren = Object.keys(children);
- }
- workingChildren
- // children that are in this.options_ but also in workingChildren would
- // give us extra children we do not want. So, we want to filter them out.
- .concat(Object.keys(this.options_).filter(function (child) {
- return !workingChildren.some(function (wchild) {
- if (typeof wchild === 'string') {
- return child === wchild;
- }
- return child === wchild.name;
- });
- })).map(child => {
- let name;
- let opts;
- if (typeof child === 'string') {
- name = child;
- opts = children[name] || this.options_[name] || {};
- } else {
- name = child.name;
- opts = child;
- }
- return {
- name,
- opts
- };
- }).filter(child => {
- // we have to make sure that child.name isn't in the techOrder since
- // techs are registered as Components but can't aren't compatible
- // See https://github.com/videojs/video.js/issues/2772
- const c = Component$1.getComponent(child.opts.componentClass || toTitleCase$1(child.name));
- return c && !Tech.isTech(c);
- }).forEach(handleAdd);
- }
- }
-
- /**
- * Builds the default DOM class name. Should be overridden by sub-components.
- *
- * @return {string}
- * The DOM class name for this object.
- *
- * @abstract
- */
- buildCSSClass() {
- // Child classes can include a function that does:
- // return 'CLASS NAME' + this._super();
- return '';
- }
-
- /**
- * Bind a listener to the component's ready state.
- * Different from event listeners in that if the ready event has already happened
- * it will trigger the function immediately.
- *
- * @param {ReadyCallback} fn
- * Function that gets called when the `Component` is ready.
- *
- * @return {Component}
- * Returns itself; method can be chained.
- */
- ready(fn, sync = false) {
- if (!fn) {
- return;
- }
- if (!this.isReady_) {
- this.readyQueue_ = this.readyQueue_ || [];
- this.readyQueue_.push(fn);
- return;
- }
- if (sync) {
- fn.call(this);
- } else {
- // Call the function asynchronously by default for consistency
- this.setTimeout(fn, 1);
- }
- }
-
- /**
- * Trigger all the ready listeners for this `Component`.
- *
- * @fires Component#ready
- */
- triggerReady() {
- this.isReady_ = true;
-
- // Ensure ready is triggered asynchronously
- this.setTimeout(function () {
- const readyQueue = this.readyQueue_;
-
- // Reset Ready Queue
- this.readyQueue_ = [];
- if (readyQueue && readyQueue.length > 0) {
- readyQueue.forEach(function (fn) {
- fn.call(this);
- }, this);
- }
-
- // Allow for using event listeners also
- /**
- * Triggered when a `Component` is ready.
- *
- * @event Component#ready
- * @type {Event}
- */
- this.trigger('ready');
- }, 1);
- }
-
- /**
- * Find a single DOM element matching a `selector`. This can be within the `Component`s
- * `contentEl()` or another custom context.
- *
- * @param {string} selector
- * A valid CSS selector, which will be passed to `querySelector`.
- *
- * @param {Element|string} [context=this.contentEl()]
- * A DOM element within which to query. Can also be a selector string in
- * which case the first matching element will get used as context. If
- * missing `this.contentEl()` gets used. If `this.contentEl()` returns
- * nothing it falls back to `document`.
- *
- * @return {Element|null}
- * the dom element that was found, or null
- *
- * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
- */
- $(selector, context) {
- return $(selector, context || this.contentEl());
- }
-
- /**
- * Finds all DOM element matching a `selector`. This can be within the `Component`s
- * `contentEl()` or another custom context.
- *
- * @param {string} selector
- * A valid CSS selector, which will be passed to `querySelectorAll`.
- *
- * @param {Element|string} [context=this.contentEl()]
- * A DOM element within which to query. Can also be a selector string in
- * which case the first matching element will get used as context. If
- * missing `this.contentEl()` gets used. If `this.contentEl()` returns
- * nothing it falls back to `document`.
- *
- * @return {NodeList}
- * a list of dom elements that were found
- *
- * @see [Information on CSS Selectors](https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Getting_Started/Selectors)
- */
- $$(selector, context) {
- return $$(selector, context || this.contentEl());
- }
-
- /**
- * Check if a component's element has a CSS class name.
- *
- * @param {string} classToCheck
- * CSS class name to check.
- *
- * @return {boolean}
- * - True if the `Component` has the class.
- * - False if the `Component` does not have the class`
- */
- hasClass(classToCheck) {
- return hasClass(this.el_, classToCheck);
- }
-
- /**
- * Add a CSS class name to the `Component`s element.
- *
- * @param {...string} classesToAdd
- * One or more CSS class name to add.
- */
- addClass(...classesToAdd) {
- addClass(this.el_, ...classesToAdd);
- }
-
- /**
- * Remove a CSS class name from the `Component`s element.
- *
- * @param {...string} classesToRemove
- * One or more CSS class name to remove.
- */
- removeClass(...classesToRemove) {
- removeClass(this.el_, ...classesToRemove);
- }
-
- /**
- * Add or remove a CSS class name from the component's element.
- * - `classToToggle` gets added when {@link Component#hasClass} would return false.
- * - `classToToggle` gets removed when {@link Component#hasClass} would return true.
- *
- * @param {string} classToToggle
- * The class to add or remove based on (@link Component#hasClass}
- *
- * @param {boolean|Dom~predicate} [predicate]
- * An {@link Dom~predicate} function or a boolean
- */
- toggleClass(classToToggle, predicate) {
- toggleClass(this.el_, classToToggle, predicate);
- }
-
- /**
- * Show the `Component`s element if it is hidden by removing the
- * 'vjs-hidden' class name from it.
- */
- show() {
- this.removeClass('vjs-hidden');
- }
-
- /**
- * Hide the `Component`s element if it is currently showing by adding the
- * 'vjs-hidden` class name to it.
- */
- hide() {
- this.addClass('vjs-hidden');
- }
-
- /**
- * Lock a `Component`s element in its visible state by adding the 'vjs-lock-showing'
- * class name to it. Used during fadeIn/fadeOut.
- *
- * @private
- */
- lockShowing() {
- this.addClass('vjs-lock-showing');
- }
-
- /**
- * Unlock a `Component`s element from its visible state by removing the 'vjs-lock-showing'
- * class name from it. Used during fadeIn/fadeOut.
- *
- * @private
- */
- unlockShowing() {
- this.removeClass('vjs-lock-showing');
- }
-
- /**
- * Get the value of an attribute on the `Component`s element.
- *
- * @param {string} attribute
- * Name of the attribute to get the value from.
- *
- * @return {string|null}
- * - The value of the attribute that was asked for.
- * - Can be an empty string on some browsers if the attribute does not exist
- * or has no value
- * - Most browsers will return null if the attribute does not exist or has
- * no value.
- *
- * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/getAttribute}
- */
- getAttribute(attribute) {
- return getAttribute(this.el_, attribute);
- }
-
- /**
- * Set the value of an attribute on the `Component`'s element
- *
- * @param {string} attribute
- * Name of the attribute to set.
- *
- * @param {string} value
- * Value to set the attribute to.
- *
- * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/setAttribute}
- */
- setAttribute(attribute, value) {
- setAttribute(this.el_, attribute, value);
- }
-
- /**
- * Remove an attribute from the `Component`s element.
- *
- * @param {string} attribute
- * Name of the attribute to remove.
- *
- * @see [DOM API]{@link https://developer.mozilla.org/en-US/docs/Web/API/Element/removeAttribute}
- */
- removeAttribute(attribute) {
- removeAttribute(this.el_, attribute);
- }
-
- /**
- * Get or set the width of the component based upon the CSS styles.
- * See {@link Component#dimension} for more detailed information.
- *
- * @param {number|string} [num]
- * The width that you want to set postfixed with '%', 'px' or nothing.
- *
- * @param {boolean} [skipListeners]
- * Skip the componentresize event trigger
- *
- * @return {number|undefined}
- * The width when getting, zero if there is no width
- */
- width(num, skipListeners) {
- return this.dimension('width', num, skipListeners);
- }
-
- /**
- * Get or set the height of the component based upon the CSS styles.
- * See {@link Component#dimension} for more detailed information.
- *
- * @param {number|string} [num]
- * The height that you want to set postfixed with '%', 'px' or nothing.
- *
- * @param {boolean} [skipListeners]
- * Skip the componentresize event trigger
- *
- * @return {number|undefined}
- * The height when getting, zero if there is no height
- */
- height(num, skipListeners) {
- return this.dimension('height', num, skipListeners);
- }
-
- /**
- * Set both the width and height of the `Component` element at the same time.
- *
- * @param {number|string} width
- * Width to set the `Component`s element to.
- *
- * @param {number|string} height
- * Height to set the `Component`s element to.
- */
- dimensions(width, height) {
- // Skip componentresize listeners on width for optimization
- this.width(width, true);
- this.height(height);
- }
-
- /**
- * Get or set width or height of the `Component` element. This is the shared code
- * for the {@link Component#width} and {@link Component#height}.
- *
- * Things to know:
- * - If the width or height in an number this will return the number postfixed with 'px'.
- * - If the width/height is a percent this will return the percent postfixed with '%'
- * - Hidden elements have a width of 0 with `window.getComputedStyle`. This function
- * defaults to the `Component`s `style.width` and falls back to `window.getComputedStyle`.
- * See [this]{@link http://www.foliotek.com/devblog/getting-the-width-of-a-hidden-element-with-jquery-using-width/}
- * for more information
- * - If you want the computed style of the component, use {@link Component#currentWidth}
- * and {@link {Component#currentHeight}
- *
- * @fires Component#componentresize
- *
- * @param {string} widthOrHeight
- 8 'width' or 'height'
- *
- * @param {number|string} [num]
- 8 New dimension
- *
- * @param {boolean} [skipListeners]
- * Skip componentresize event trigger
- *
- * @return {number|undefined}
- * The dimension when getting or 0 if unset
- */
- dimension(widthOrHeight, num, skipListeners) {
- if (num !== undefined) {
- // Set to zero if null or literally NaN (NaN !== NaN)
- if (num === null || num !== num) {
- num = 0;
- }
-
- // Check if using css width/height (% or px) and adjust
- if (('' + num).indexOf('%') !== -1 || ('' + num).indexOf('px') !== -1) {
- this.el_.style[widthOrHeight] = num;
- } else if (num === 'auto') {
- this.el_.style[widthOrHeight] = '';
- } else {
- this.el_.style[widthOrHeight] = num + 'px';
- }
-
- // skipListeners allows us to avoid triggering the resize event when setting both width and height
- if (!skipListeners) {
- /**
- * Triggered when a component is resized.
- *
- * @event Component#componentresize
- * @type {Event}
- */
- this.trigger('componentresize');
- }
- return;
- }
-
- // Not setting a value, so getting it
- // Make sure element exists
- if (!this.el_) {
- return 0;
- }
-
- // Get dimension value from style
- const val = this.el_.style[widthOrHeight];
- const pxIndex = val.indexOf('px');
- if (pxIndex !== -1) {
- // Return the pixel value with no 'px'
- return parseInt(val.slice(0, pxIndex), 10);
- }
-
- // No px so using % or no style was set, so falling back to offsetWidth/height
- // If component has display:none, offset will return 0
- // TODO: handle display:none and no dimension style using px
- return parseInt(this.el_['offset' + toTitleCase$1(widthOrHeight)], 10);
- }
-
- /**
- * Get the computed width or the height of the component's element.
- *
- * Uses `window.getComputedStyle`.
- *
- * @param {string} widthOrHeight
- * A string containing 'width' or 'height'. Whichever one you want to get.
- *
- * @return {number}
- * The dimension that gets asked for or 0 if nothing was set
- * for that dimension.
- */
- currentDimension(widthOrHeight) {
- let computedWidthOrHeight = 0;
- if (widthOrHeight !== 'width' && widthOrHeight !== 'height') {
- throw new Error('currentDimension only accepts width or height value');
- }
- computedWidthOrHeight = computedStyle(this.el_, widthOrHeight);
-
- // remove 'px' from variable and parse as integer
- computedWidthOrHeight = parseFloat(computedWidthOrHeight);
-
- // if the computed value is still 0, it's possible that the browser is lying
- // and we want to check the offset values.
- // This code also runs wherever getComputedStyle doesn't exist.
- if (computedWidthOrHeight === 0 || isNaN(computedWidthOrHeight)) {
- const rule = `offset${toTitleCase$1(widthOrHeight)}`;
- computedWidthOrHeight = this.el_[rule];
- }
- return computedWidthOrHeight;
- }
-
- /**
- * An object that contains width and height values of the `Component`s
- * computed style. Uses `window.getComputedStyle`.
- *
- * @typedef {Object} Component~DimensionObject
- *
- * @property {number} width
- * The width of the `Component`s computed style.
- *
- * @property {number} height
- * The height of the `Component`s computed style.
- */
-
- /**
- * Get an object that contains computed width and height values of the
- * component's element.
- *
- * Uses `window.getComputedStyle`.
- *
- * @return {Component~DimensionObject}
- * The computed dimensions of the component's element.
- */
- currentDimensions() {
- return {
- width: this.currentDimension('width'),
- height: this.currentDimension('height')
- };
- }
-
- /**
- * Get the computed width of the component's element.
- *
- * Uses `window.getComputedStyle`.
- *
- * @return {number}
- * The computed width of the component's element.
- */
- currentWidth() {
- return this.currentDimension('width');
- }
-
- /**
- * Get the computed height of the component's element.
- *
- * Uses `window.getComputedStyle`.
- *
- * @return {number}
- * The computed height of the component's element.
- */
- currentHeight() {
- return this.currentDimension('height');
- }
-
- /**
- * Set the focus to this component
- */
- focus() {
- this.el_.focus();
- }
-
- /**
- * Remove the focus from this component
- */
- blur() {
- this.el_.blur();
- }
-
- /**
- * When this Component receives a `keydown` event which it does not process,
- * it passes the event to the Player for handling.
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- */
- handleKeyDown(event) {
- if (this.player_) {
- // We only stop propagation here because we want unhandled events to fall
- // back to the browser. Exclude Tab for focus trapping.
- if (!keycode.isEventKey(event, 'Tab')) {
- event.stopPropagation();
- }
- this.player_.handleKeyDown(event);
- }
- }
-
- /**
- * Many components used to have a `handleKeyPress` method, which was poorly
- * named because it listened to a `keydown` event. This method name now
- * delegates to `handleKeyDown`. This means anyone calling `handleKeyPress`
- * will not see their method calls stop working.
- *
- * @param {KeyboardEvent} event
- * The event that caused this function to be called.
- */
- handleKeyPress(event) {
- this.handleKeyDown(event);
- }
-
- /**
- * Emit a 'tap' events when touch event support gets detected. This gets used to
- * support toggling the controls through a tap on the video. They get enabled
- * because every sub-component would have extra overhead otherwise.
- *
- * @protected
- * @fires Component#tap
- * @listens Component#touchstart
- * @listens Component#touchmove
- * @listens Component#touchleave
- * @listens Component#touchcancel
- * @listens Component#touchend
- */
- emitTapEvents() {
- // Track the start time so we can determine how long the touch lasted
- let touchStart = 0;
- let firstTouch = null;
-
- // Maximum movement allowed during a touch event to still be considered a tap
- // Other popular libs use anywhere from 2 (hammer.js) to 15,
- // so 10 seems like a nice, round number.
- const tapMovementThreshold = 10;
-
- // The maximum length a touch can be while still being considered a tap
- const touchTimeThreshold = 200;
- let couldBeTap;
- this.on('touchstart', function (event) {
- // If more than one finger, don't consider treating this as a click
- if (event.touches.length === 1) {
- // Copy pageX/pageY from the object
- firstTouch = {
- pageX: event.touches[0].pageX,
- pageY: event.touches[0].pageY
- };
- // Record start time so we can detect a tap vs. "touch and hold"
- touchStart = window.performance.now();
- // Reset couldBeTap tracking
- couldBeTap = true;
- }
- });
- this.on('touchmove', function (event) {
- // If more than one finger, don't consider treating this as a click
- if (event.touches.length > 1) {
- couldBeTap = false;
- } else if (firstTouch) {
- // Some devices will throw touchmoves for all but the slightest of taps.
- // So, if we moved only a small distance, this could still be a tap
- const xdiff = event.touches[0].pageX - firstTouch.pageX;
- const ydiff = event.touches[0].pageY - firstTouch.pageY;
- const touchDistance = Math.sqrt(xdiff * xdiff + ydiff * ydiff);
- if (touchDistance > tapMovementThreshold) {
- couldBeTap = false;
- }
- }
- });
- const noTap = function () {
- couldBeTap = false;
- };
-
- // TODO: Listen to the original target. http://youtu.be/DujfpXOKUp8?t=13m8s
- this.on('touchleave', noTap);
- this.on('touchcancel', noTap);
-
- // When the touch ends, measure how long it took and trigger the appropriate
- // event
- this.on('touchend', function (event) {
- firstTouch = null;
- // Proceed only if the touchmove/leave/cancel event didn't happen
- if (couldBeTap === true) {
- // Measure how long the touch lasted
- const touchTime = window.performance.now() - touchStart;
-
- // Make sure the touch was less than the threshold to be considered a tap
- if (touchTime < touchTimeThreshold) {
- // Don't let browser turn this into a click
- event.preventDefault();
- /**
- * Triggered when a `Component` is tapped.
- *
- * @event Component#tap
- * @type {MouseEvent}
- */
- this.trigger('tap');
- // It may be good to copy the touchend event object and change the
- // type to tap, if the other event properties aren't exact after
- // Events.fixEvent runs (e.g. event.target)
- }
- }
- });
- }
-
- /**
- * This function reports user activity whenever touch events happen. This can get
- * turned off by any sub-components that wants touch events to act another way.
- *
- * Report user touch activity when touch events occur. User activity gets used to
- * determine when controls should show/hide. It is simple when it comes to mouse
- * events, because any mouse event should show the controls. So we capture mouse
- * events that bubble up to the player and report activity when that happens.
- * With touch events it isn't as easy as `touchstart` and `touchend` toggle player
- * controls. So touch events can't help us at the player level either.
- *
- * User activity gets checked asynchronously. So what could happen is a tap event
- * on the video turns the controls off. Then the `touchend` event bubbles up to
- * the player. Which, if it reported user activity, would turn the controls right
- * back on. We also don't want to completely block touch events from bubbling up.
- * Furthermore a `touchmove` event and anything other than a tap, should not turn
- * controls back on.
- *
- * @listens Component#touchstart
- * @listens Component#touchmove
- * @listens Component#touchend
- * @listens Component#touchcancel
- */
- enableTouchActivity() {
- // Don't continue if the root player doesn't support reporting user activity
- if (!this.player() || !this.player().reportUserActivity) {
- return;
- }
-
- // listener for reporting that the user is active
- const report = bind_(this.player(), this.player().reportUserActivity);
- let touchHolding;
- this.on('touchstart', function () {
- report();
- // For as long as the they are touching the device or have their mouse down,
- // we consider them active even if they're not moving their finger or mouse.
- // So we want to continue to update that they are active
- this.clearInterval(touchHolding);
- // report at the same interval as activityCheck
- touchHolding = this.setInterval(report, 250);
- });
- const touchEnd = function (event) {
- report();
- // stop the interval that maintains activity if the touch is holding
- this.clearInterval(touchHolding);
- };
- this.on('touchmove', report);
- this.on('touchend', touchEnd);
- this.on('touchcancel', touchEnd);
- }
-
- /**
- * A callback that has no parameters and is bound into `Component`s context.
- *
- * @callback Component~GenericCallback
- * @this Component
- */
-
- /**
- * Creates a function that runs after an `x` millisecond timeout. This function is a
- * wrapper around `window.setTimeout`. There are a few reasons to use this one
- * instead though:
- * 1. It gets cleared via {@link Component#clearTimeout} when
- * {@link Component#dispose} gets called.
- * 2. The function callback will gets turned into a {@link Component~GenericCallback}
- *
- * > Note: You can't use `window.clearTimeout` on the id returned by this function. This
- * will cause its dispose listener not to get cleaned up! Please use
- * {@link Component#clearTimeout} or {@link Component#dispose} instead.
- *
- * @param {Component~GenericCallback} fn
- * The function that will be run after `timeout`.
- *
- * @param {number} timeout
- * Timeout in milliseconds to delay before executing the specified function.
- *
- * @return {number}
- * Returns a timeout ID that gets used to identify the timeout. It can also
- * get used in {@link Component#clearTimeout} to clear the timeout that
- * was set.
- *
- * @listens Component#dispose
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setTimeout}
- */
- setTimeout(fn, timeout) {
- // declare as variables so they are properly available in timeout function
- // eslint-disable-next-line
- var timeoutId;
- fn = bind_(this, fn);
- this.clearTimersOnDispose_();
- timeoutId = window.setTimeout(() => {
- if (this.setTimeoutIds_.has(timeoutId)) {
- this.setTimeoutIds_.delete(timeoutId);
- }
- fn();
- }, timeout);
- this.setTimeoutIds_.add(timeoutId);
- return timeoutId;
- }
-
- /**
- * Clears a timeout that gets created via `window.setTimeout` or
- * {@link Component#setTimeout}. If you set a timeout via {@link Component#setTimeout}
- * use this function instead of `window.clearTimout`. If you don't your dispose
- * listener will not get cleaned up until {@link Component#dispose}!
- *
- * @param {number} timeoutId
- * The id of the timeout to clear. The return value of
- * {@link Component#setTimeout} or `window.setTimeout`.
- *
- * @return {number}
- * Returns the timeout id that was cleared.
- *
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearTimeout}
- */
- clearTimeout(timeoutId) {
- if (this.setTimeoutIds_.has(timeoutId)) {
- this.setTimeoutIds_.delete(timeoutId);
- window.clearTimeout(timeoutId);
- }
- return timeoutId;
- }
-
- /**
- * Creates a function that gets run every `x` milliseconds. This function is a wrapper
- * around `window.setInterval`. There are a few reasons to use this one instead though.
- * 1. It gets cleared via {@link Component#clearInterval} when
- * {@link Component#dispose} gets called.
- * 2. The function callback will be a {@link Component~GenericCallback}
- *
- * @param {Component~GenericCallback} fn
- * The function to run every `x` seconds.
- *
- * @param {number} interval
- * Execute the specified function every `x` milliseconds.
- *
- * @return {number}
- * Returns an id that can be used to identify the interval. It can also be be used in
- * {@link Component#clearInterval} to clear the interval.
- *
- * @listens Component#dispose
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/setInterval}
- */
- setInterval(fn, interval) {
- fn = bind_(this, fn);
- this.clearTimersOnDispose_();
- const intervalId = window.setInterval(fn, interval);
- this.setIntervalIds_.add(intervalId);
- return intervalId;
- }
-
- /**
- * Clears an interval that gets created via `window.setInterval` or
- * {@link Component#setInterval}. If you set an interval via {@link Component#setInterval}
- * use this function instead of `window.clearInterval`. If you don't your dispose
- * listener will not get cleaned up until {@link Component#dispose}!
- *
- * @param {number} intervalId
- * The id of the interval to clear. The return value of
- * {@link Component#setInterval} or `window.setInterval`.
- *
- * @return {number}
- * Returns the interval id that was cleared.
- *
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/WindowTimers/clearInterval}
- */
- clearInterval(intervalId) {
- if (this.setIntervalIds_.has(intervalId)) {
- this.setIntervalIds_.delete(intervalId);
- window.clearInterval(intervalId);
- }
- return intervalId;
- }
-
- /**
- * Queues up a callback to be passed to requestAnimationFrame (rAF), but
- * with a few extra bonuses:
- *
- * - Supports browsers that do not support rAF by falling back to
- * {@link Component#setTimeout}.
- *
- * - The callback is turned into a {@link Component~GenericCallback} (i.e.
- * bound to the component).
- *
- * - Automatic cancellation of the rAF callback is handled if the component
- * is disposed before it is called.
- *
- * @param {Component~GenericCallback} fn
- * A function that will be bound to this component and executed just
- * before the browser's next repaint.
- *
- * @return {number}
- * Returns an rAF ID that gets used to identify the timeout. It can
- * also be used in {@link Component#cancelAnimationFrame} to cancel
- * the animation frame callback.
- *
- * @listens Component#dispose
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/requestAnimationFrame}
- */
- requestAnimationFrame(fn) {
- this.clearTimersOnDispose_();
-
- // declare as variables so they are properly available in rAF function
- // eslint-disable-next-line
- var id;
- fn = bind_(this, fn);
- id = window.requestAnimationFrame(() => {
- if (this.rafIds_.has(id)) {
- this.rafIds_.delete(id);
- }
- fn();
- });
- this.rafIds_.add(id);
- return id;
- }
-
- /**
- * Request an animation frame, but only one named animation
- * frame will be queued. Another will never be added until
- * the previous one finishes.
- *
- * @param {string} name
- * The name to give this requestAnimationFrame
- *
- * @param {Component~GenericCallback} fn
- * A function that will be bound to this component and executed just
- * before the browser's next repaint.
- */
- requestNamedAnimationFrame(name, fn) {
- if (this.namedRafs_.has(name)) {
- return;
- }
- this.clearTimersOnDispose_();
- fn = bind_(this, fn);
- const id = this.requestAnimationFrame(() => {
- fn();
- if (this.namedRafs_.has(name)) {
- this.namedRafs_.delete(name);
- }
- });
- this.namedRafs_.set(name, id);
- return name;
- }
-
- /**
- * Cancels a current named animation frame if it exists.
- *
- * @param {string} name
- * The name of the requestAnimationFrame to cancel.
- */
- cancelNamedAnimationFrame(name) {
- if (!this.namedRafs_.has(name)) {
- return;
- }
- this.cancelAnimationFrame(this.namedRafs_.get(name));
- this.namedRafs_.delete(name);
- }
-
- /**
- * Cancels a queued callback passed to {@link Component#requestAnimationFrame}
- * (rAF).
- *
- * If you queue an rAF callback via {@link Component#requestAnimationFrame},
- * use this function instead of `window.cancelAnimationFrame`. If you don't,
- * your dispose listener will not get cleaned up until {@link Component#dispose}!
- *
- * @param {number} id
- * The rAF ID to clear. The return value of {@link Component#requestAnimationFrame}.
- *
- * @return {number}
- * Returns the rAF ID that was cleared.
- *
- * @see [Similar to]{@link https://developer.mozilla.org/en-US/docs/Web/API/window/cancelAnimationFrame}
- */
- cancelAnimationFrame(id) {
- if (this.rafIds_.has(id)) {
- this.rafIds_.delete(id);
- window.cancelAnimationFrame(id);
- }
- return id;
- }
-
- /**
- * A function to setup `requestAnimationFrame`, `setTimeout`,
- * and `setInterval`, clearing on dispose.
- *
- * > Previously each timer added and removed dispose listeners on it's own.
- * For better performance it was decided to batch them all, and use `Set`s
- * to track outstanding timer ids.
- *
- * @private
- */
- clearTimersOnDispose_() {
- if (this.clearingTimersOnDispose_) {
- return;
- }
- this.clearingTimersOnDispose_ = true;
- this.one('dispose', () => {
- [['namedRafs_', 'cancelNamedAnimationFrame'], ['rafIds_', 'cancelAnimationFrame'], ['setTimeoutIds_', 'clearTimeout'], ['setIntervalIds_', 'clearInterval']].forEach(([idName, cancelName]) => {
- // for a `Set` key will actually be the value again
- // so forEach((val, val) =>` but for maps we want to use
- // the key.
- this[idName].forEach((val, key) => this[cancelName](key));
- });
- this.clearingTimersOnDispose_ = false;
- });
- }
-
- /**
- * Register a `Component` with `videojs` given the name and the component.
- *
- * > NOTE: {@link Tech}s should not be registered as a `Component`. {@link Tech}s
- * should be registered using {@link Tech.registerTech} or
- * {@link videojs:videojs.registerTech}.
- *
- * > NOTE: This function can also be seen on videojs as
- * {@link videojs:videojs.registerComponent}.
- *
- * @param {string} name
- * The name of the `Component` to register.
- *
- * @param {Component} ComponentToRegister
- * The `Component` class to register.
- *
- * @return {Component}
- * The `Component` that was registered.
- */
- static registerComponent(name, ComponentToRegister) {
- if (typeof name !== 'string' || !name) {
- throw new Error(`Illegal component name, "${name}"; must be a non-empty string.`);
- }
- const Tech = Component$1.getComponent('Tech');
-
- // We need to make sure this check is only done if Tech has been registered.
- const isTech = Tech && Tech.isTech(ComponentToRegister);
- const isComp = Component$1 === ComponentToRegister || Component$1.prototype.isPrototypeOf(ComponentToRegister.prototype);
- if (isTech || !isComp) {
- let reason;
- if (isTech) {
- reason = 'techs must be registered using Tech.registerTech()';
- } else {
- reason = 'must be a Component subclass';
- }
- throw new Error(`Illegal component, "${name}"; ${reason}.`);
- }
- name = toTitleCase$1(name);
- if (!Component$1.components_) {
- Component$1.components_ = {};
- }
- const Player = Component$1.getComponent('Player');
- if (name === 'Player' && Player && Player.players) {
- const players = Player.players;
- const playerNames = Object.keys(players);
-
- // If we have players that were disposed, then their name will still be
- // in Players.players. So, we must loop through and verify that the value
- // for each item is not null. This allows registration of the Player component
- // after all players have been disposed or before any were created.
- if (players && playerNames.length > 0 && playerNames.map(pname => players[pname]).every(Boolean)) {
- throw new Error('Can not register Player component after player has been created.');
- }
- }
- Component$1.components_[name] = ComponentToRegister;
- Component$1.components_[toLowerCase(name)] = ComponentToRegister;
- return ComponentToRegister;
- }
-
- /**
- * Get a `Component` based on the name it was registered with.
- *
- * @param {string} name
- * The Name of the component to get.
- *
- * @return {typeof Component}
- * The `Component` that got registered under the given name.
- */
- static getComponent(name) {
- if (!name || !Component$1.components_) {
- return;
- }
- return Component$1.components_[name];
- }
- }
- Component$1.registerComponent('Component', Component$1);
-
- /**
- * @file time.js
- * @module time
- */
-
- /**
- * Returns the time for the specified index at the start or end
- * of a TimeRange object.
- *
- * @typedef {Function} TimeRangeIndex
- *
- * @param {number} [index=0]
- * The range number to return the time for.
- *
- * @return {number}
- * The time offset at the specified index.
- *
- * @deprecated The index argument must be provided.
- * In the future, leaving it out will throw an error.
- */
-
- /**
- * An object that contains ranges of time, which mimics {@link TimeRanges}.
- *
- * @typedef {Object} TimeRange
- *
- * @property {number} length
- * The number of time ranges represented by this object.
- *
- * @property {module:time~TimeRangeIndex} start
- * Returns the time offset at which a specified time range begins.
- *
- * @property {module:time~TimeRangeIndex} end
- * Returns the time offset at which a specified time range ends.
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges
- */
-
- /**
- * Check if any of the time ranges are over the maximum index.
- *
- * @private
- * @param {string} fnName
- * The function name to use for logging
- *
- * @param {number} index
- * The index to check
- *
- * @param {number} maxIndex
- * The maximum possible index
- *
- * @throws {Error} if the timeRanges provided are over the maxIndex
- */
- function rangeCheck(fnName, index, maxIndex) {
- if (typeof index !== 'number' || index < 0 || index > maxIndex) {
- throw new Error(`Failed to execute '${fnName}' on 'TimeRanges': The index provided (${index}) is non-numeric or out of bounds (0-${maxIndex}).`);
- }
- }
-
- /**
- * Get the time for the specified index at the start or end
- * of a TimeRange object.
- *
- * @private
- * @param {string} fnName
- * The function name to use for logging
- *
- * @param {string} valueIndex
- * The property that should be used to get the time. should be
- * 'start' or 'end'
- *
- * @param {Array} ranges
- * An array of time ranges
- *
- * @param {Array} [rangeIndex=0]
- * The index to start the search at
- *
- * @return {number}
- * The time that offset at the specified index.
- *
- * @deprecated rangeIndex must be set to a value, in the future this will throw an error.
- * @throws {Error} if rangeIndex is more than the length of ranges
- */
- function getRange(fnName, valueIndex, ranges, rangeIndex) {
- rangeCheck(fnName, rangeIndex, ranges.length - 1);
- return ranges[rangeIndex][valueIndex];
- }
-
- /**
- * Create a time range object given ranges of time.
- *
- * @private
- * @param {Array} [ranges]
- * An array of time ranges.
- *
- * @return {TimeRange}
- */
- function createTimeRangesObj(ranges) {
- let timeRangesObj;
- if (ranges === undefined || ranges.length === 0) {
- timeRangesObj = {
- length: 0,
- start() {
- throw new Error('This TimeRanges object is empty');
- },
- end() {
- throw new Error('This TimeRanges object is empty');
- }
- };
- } else {
- timeRangesObj = {
- length: ranges.length,
- start: getRange.bind(null, 'start', 0, ranges),
- end: getRange.bind(null, 'end', 1, ranges)
- };
- }
- if (window.Symbol && window.Symbol.iterator) {
- timeRangesObj[window.Symbol.iterator] = () => (ranges || []).values();
- }
- return timeRangesObj;
- }
-
- /**
- * Create a `TimeRange` object which mimics an
- * {@link https://developer.mozilla.org/en-US/docs/Web/API/TimeRanges|HTML5 TimeRanges instance}.
- *
- * @param {number|Array[]} start
- * The start of a single range (a number) or an array of ranges (an
- * array of arrays of two numbers each).
- *
- * @param {number} end
- * The end of a single range. Cannot be used with the array form of
- * the `start` argument.
- *
- * @return {TimeRange}
- */
- function createTimeRanges$1(start, end) {
- if (Array.isArray(start)) {
- return createTimeRangesObj(start);
- } else if (start === undefined || end === undefined) {
- return createTimeRangesObj();
- }
- return createTimeRangesObj([[start, end]]);
- }
-
- /**
- * Format seconds as a time string, H:MM:SS or M:SS. Supplying a guide (in
- * seconds) will force a number of leading zeros to cover the length of the
- * guide.
- *
- * @private
- * @param {number} seconds
- * Number of seconds to be turned into a string
- *
- * @param {number} guide
- * Number (in seconds) to model the string after
- *
- * @return {string}
- * Time formatted as H:MM:SS or M:SS
- */
- const defaultImplementation = function (seconds, guide) {
- seconds = seconds < 0 ? 0 : seconds;
- let s = Math.floor(seconds % 60);
- let m = Math.floor(seconds / 60 % 60);
- let h = Math.floor(seconds / 3600);
- const gm = Math.floor(guide / 60 % 60);
- const gh = Math.floor(guide / 3600);
-
- // handle invalid times
- if (isNaN(seconds) || seconds === Infinity) {
- // '-' is false for all relational operators (e.g. <, >=) so this setting
- // will add the minimum number of fields specified by the guide
- h = m = s = '-';
- }
-
- // Check if we need to show hours
- h = h > 0 || gh > 0 ? h + ':' : '';
-
- // If hours are showing, we may need to add a leading zero.
- // Always show at least one digit of minutes.
- m = ((h || gm >= 10) && m < 10 ? '0' + m : m) + ':';
-
- // Check if leading zero is need for seconds
- s = s < 10 ? '0' + s : s;
- return h + m + s;
- };
-
- // Internal pointer to the current implementation.
- let implementation = defaultImplementation;
-
- /**
- * Replaces the default formatTime implementation with a custom implementation.
- *
- * @param {Function} customImplementation
- * A function which will be used in place of the default formatTime
- * implementation. Will receive the current time in seconds and the
- * guide (in seconds) as arguments.
- */
- function setFormatTime(customImplementation) {
- implementation = customImplementation;
- }
-
- /**
- * Resets formatTime to the default implementation.
- */
- function resetFormatTime() {
- implementation = defaultImplementation;
- }
-
- /**
- * Delegates to either the default time formatting function or a custom
- * function supplied via `setFormatTime`.
- *
- * Formats seconds as a time string (H:MM:SS or M:SS). Supplying a
- * guide (in seconds) will force a number of leading zeros to cover the
- * length of the guide.
- *
- * @example formatTime(125, 600) === "02:05"
- * @param {number} seconds
- * Number of seconds to be turned into a string
- *
- * @param {number} guide
- * Number (in seconds) to model the string after
- *
- * @return {string}
- * Time formatted as H:MM:SS or M:SS
- */
- function formatTime(seconds, guide = seconds) {
- return implementation(seconds, guide);
- }
-
- var Time = /*#__PURE__*/Object.freeze({
- __proto__: null,
- createTimeRanges: createTimeRanges$1,
- createTimeRange: createTimeRanges$1,
- setFormatTime: setFormatTime,
- resetFormatTime: resetFormatTime,
- formatTime: formatTime
- });
-
- /**
- * @file buffer.js
- * @module buffer
- */
-
- /**
- * Compute the percentage of the media that has been buffered.
- *
- * @param { import('./time').TimeRange } buffered
- * The current `TimeRanges` object representing buffered time ranges
- *
- * @param {number} duration
- * Total duration of the media
- *
- * @return {number}
- * Percent buffered of the total duration in decimal form.
- */
- function bufferedPercent(buffered, duration) {
- let bufferedDuration = 0;
- let start;
- let end;
- if (!duration) {
- return 0;
- }
- if (!buffered || !buffered.length) {
- buffered = createTimeRanges$1(0, 0);
- }
- for (let i = 0; i < buffered.length; i++) {
- start = buffered.start(i);
- end = buffered.end(i);
-
- // buffered end can be bigger than duration by a very small fraction
- if (end > duration) {
- end = duration;
- }
- bufferedDuration += end - start;
- }
- return bufferedDuration / duration;
- }
-
- /**
- * @file media-error.js
- */
-
- /**
- * A Custom `MediaError` class which mimics the standard HTML5 `MediaError` class.
- *
- * @param {number|string|Object|MediaError} value
- * This can be of multiple types:
- * - number: should be a standard error code
- * - string: an error message (the code will be 0)
- * - Object: arbitrary properties
- * - `MediaError` (native): used to populate a video.js `MediaError` object
- * - `MediaError` (video.js): will return itself if it's already a
- * video.js `MediaError` object.
- *
- * @see [MediaError Spec]{@link https://dev.w3.org/html5/spec-author-view/video.html#mediaerror}
- * @see [Encrypted MediaError Spec]{@link https://www.w3.org/TR/2013/WD-encrypted-media-20130510/#error-codes}
- *
- * @class MediaError
- */
- function MediaError(value) {
- // Allow redundant calls to this constructor to avoid having `instanceof`
- // checks peppered around the code.
- if (value instanceof MediaError) {
- return value;
- }
- if (typeof value === 'number') {
- this.code = value;
- } else if (typeof value === 'string') {
- // default code is zero, so this is a custom error
- this.message = value;
- } else if (isObject$1(value)) {
- // We assign the `code` property manually because native `MediaError` objects
- // do not expose it as an own/enumerable property of the object.
- if (typeof value.code === 'number') {
- this.code = value.code;
- }
- Object.assign(this, value);
- }
- if (!this.message) {
- this.message = MediaError.defaultMessages[this.code] || '';
- }
- }
-
- /**
- * The error code that refers two one of the defined `MediaError` types
- *
- * @type {Number}
- */
- MediaError.prototype.code = 0;
-
- /**
- * An optional message that to show with the error. Message is not part of the HTML5
- * video spec but allows for more informative custom errors.
- *
- * @type {String}
- */
- MediaError.prototype.message = '';
-
- /**
- * An optional status code that can be set by plugins to allow even more detail about
- * the error. For example a plugin might provide a specific HTTP status code and an
- * error message for that code. Then when the plugin gets that error this class will
- * know how to display an error message for it. This allows a custom message to show
- * up on the `Player` error overlay.
- *
- * @type {Array}
- */
- MediaError.prototype.status = null;
-
- /**
- * An object containing an error type, as well as other information regarding the error.
- *
- * @typedef {{errorType: string, [key: string]: any}} ErrorMetadata
- */
-
- /**
- * An optional object to give more detail about the error. This can be used to give
- * a higher level of specificity to an error versus the more generic MediaError codes.
- * `metadata` expects an `errorType` string that should align with the values from videojs.Error.
- *
- * @type {ErrorMetadata}
- */
- MediaError.prototype.metadata = null;
-
- /**
- * Errors indexed by the W3C standard. The order **CANNOT CHANGE**! See the
- * specification listed under {@link MediaError} for more information.
- *
- * @enum {array}
- * @readonly
- * @property {string} 0 - MEDIA_ERR_CUSTOM
- * @property {string} 1 - MEDIA_ERR_ABORTED
- * @property {string} 2 - MEDIA_ERR_NETWORK
- * @property {string} 3 - MEDIA_ERR_DECODE
- * @property {string} 4 - MEDIA_ERR_SRC_NOT_SUPPORTED
- * @property {string} 5 - MEDIA_ERR_ENCRYPTED
- */
- MediaError.errorTypes = ['MEDIA_ERR_CUSTOM', 'MEDIA_ERR_ABORTED', 'MEDIA_ERR_NETWORK', 'MEDIA_ERR_DECODE', 'MEDIA_ERR_SRC_NOT_SUPPORTED', 'MEDIA_ERR_ENCRYPTED'];
-
- /**
- * The default `MediaError` messages based on the {@link MediaError.errorTypes}.
- *
- * @type {Array}
- * @constant
- */
- MediaError.defaultMessages = {
- 1: 'You aborted the media playback',
- 2: 'A network error caused the media download to fail part-way.',
- 3: 'The media playback was aborted due to a corruption problem or because the media used features your browser did not support.',
- 4: 'The media could not be loaded, either because the server or network failed or because the format is not supported.',
- 5: 'The media is encrypted and we do not have the keys to decrypt it.'
- };
-
- /**
- * W3C error code for any custom error.
- *
- * @member MediaError#MEDIA_ERR_CUSTOM
- * @constant {number}
- * @default 0
- */
- MediaError.MEDIA_ERR_CUSTOM = 0;
-
- /**
- * W3C error code for any custom error.
- *
- * @member MediaError.MEDIA_ERR_CUSTOM
- * @constant {number}
- * @default 0
- */
- MediaError.prototype.MEDIA_ERR_CUSTOM = 0;
-
- /**
- * W3C error code for media error aborted.
- *
- * @member MediaError#MEDIA_ERR_ABORTED
- * @constant {number}
- * @default 1
- */
- MediaError.MEDIA_ERR_ABORTED = 1;
-
- /**
- * W3C error code for media error aborted.
- *
- * @member MediaError.MEDIA_ERR_ABORTED
- * @constant {number}
- * @default 1
- */
- MediaError.prototype.MEDIA_ERR_ABORTED = 1;
-
- /**
- * W3C error code for any network error.
- *
- * @member MediaError#MEDIA_ERR_NETWORK
- * @constant {number}
- * @default 2
- */
- MediaError.MEDIA_ERR_NETWORK = 2;
-
- /**
- * W3C error code for any network error.
- *
- * @member MediaError.MEDIA_ERR_NETWORK
- * @constant {number}
- * @default 2
- */
- MediaError.prototype.MEDIA_ERR_NETWORK = 2;
-
- /**
- * W3C error code for any decoding error.
- *
- * @member MediaError#MEDIA_ERR_DECODE
- * @constant {number}
- * @default 3
- */
- MediaError.MEDIA_ERR_DECODE = 3;
-
- /**
- * W3C error code for any decoding error.
- *
- * @member MediaError.MEDIA_ERR_DECODE
- * @constant {number}
- * @default 3
- */
- MediaError.prototype.MEDIA_ERR_DECODE = 3;
-
- /**
- * W3C error code for any time that a source is not supported.
- *
- * @member MediaError#MEDIA_ERR_SRC_NOT_SUPPORTED
- * @constant {number}
- * @default 4
- */
- MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
-
- /**
- * W3C error code for any time that a source is not supported.
- *
- * @member MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED
- * @constant {number}
- * @default 4
- */
- MediaError.prototype.MEDIA_ERR_SRC_NOT_SUPPORTED = 4;
-
- /**
- * W3C error code for any time that a source is encrypted.
- *
- * @member MediaError#MEDIA_ERR_ENCRYPTED
- * @constant {number}
- * @default 5
- */
- MediaError.MEDIA_ERR_ENCRYPTED = 5;
-
- /**
- * W3C error code for any time that a source is encrypted.
- *
- * @member MediaError.MEDIA_ERR_ENCRYPTED
- * @constant {number}
- * @default 5
- */
- MediaError.prototype.MEDIA_ERR_ENCRYPTED = 5;
-
- var tuple = SafeParseTuple;
- function SafeParseTuple(obj, reviver) {
- var json;
- var error = null;
- try {
- json = JSON.parse(obj, reviver);
- } catch (err) {
- error = err;
- }
- return [error, json];
- }
-
- /**
- * Returns whether an object is `Promise`-like (i.e. has a `then` method).
- *
- * @param {Object} value
- * An object that may or may not be `Promise`-like.
- *
- * @return {boolean}
- * Whether or not the object is `Promise`-like.
- */
- function isPromise(value) {
- return value !== undefined && value !== null && typeof value.then === 'function';
- }
-
- /**
- * Silence a Promise-like object.
- *
- * This is useful for avoiding non-harmful, but potentially confusing "uncaught
- * play promise" rejection error messages.
- *
- * @param {Object} value
- * An object that may or may not be `Promise`-like.
- */
- function silencePromise(value) {
- if (isPromise(value)) {
- value.then(null, e => {});
- }
- }
-
- /**
- * @file text-track-list-converter.js Utilities for capturing text track state and
- * re-creating tracks based on a capture.
- *
- * @module text-track-list-converter
- */
-
- /**
- * Examine a single {@link TextTrack} and return a JSON-compatible javascript object that
- * represents the {@link TextTrack}'s state.
- *
- * @param {TextTrack} track
- * The text track to query.
- *
- * @return {Object}
- * A serializable javascript representation of the TextTrack.
- * @private
- */
- const trackToJson_ = function (track) {
- const ret = ['kind', 'label', 'language', 'id', 'inBandMetadataTrackDispatchType', 'mode', 'src'].reduce((acc, prop, i) => {
- if (track[prop]) {
- acc[prop] = track[prop];
- }
- return acc;
- }, {
- cues: track.cues && Array.prototype.map.call(track.cues, function (cue) {
- return {
- startTime: cue.startTime,
- endTime: cue.endTime,
- text: cue.text,
- id: cue.id
- };
- })
- });
- return ret;
- };
-
- /**
- * Examine a {@link Tech} and return a JSON-compatible javascript array that represents the
- * state of all {@link TextTrack}s currently configured. The return array is compatible with
- * {@link text-track-list-converter:jsonToTextTracks}.
- *
- * @param { import('../tech/tech').default } tech
- * The tech object to query
- *
- * @return {Array}
- * A serializable javascript representation of the {@link Tech}s
- * {@link TextTrackList}.
- */
- const textTracksToJson = function (tech) {
- const trackEls = tech.$$('track');
- const trackObjs = Array.prototype.map.call(trackEls, t => t.track);
- const tracks = Array.prototype.map.call(trackEls, function (trackEl) {
- const json = trackToJson_(trackEl.track);
- if (trackEl.src) {
- json.src = trackEl.src;
- }
- return json;
- });
- return tracks.concat(Array.prototype.filter.call(tech.textTracks(), function (track) {
- return trackObjs.indexOf(track) === -1;
- }).map(trackToJson_));
- };
-
- /**
- * Create a set of remote {@link TextTrack}s on a {@link Tech} based on an array of javascript
- * object {@link TextTrack} representations.
- *
- * @param {Array} json
- * An array of `TextTrack` representation objects, like those that would be
- * produced by `textTracksToJson`.
- *
- * @param {Tech} tech
- * The `Tech` to create the `TextTrack`s on.
- */
- const jsonToTextTracks = function (json, tech) {
- json.forEach(function (track) {
- const addedTrack = tech.addRemoteTextTrack(track).track;
- if (!track.src && track.cues) {
- track.cues.forEach(cue => addedTrack.addCue(cue));
- }
- });
- return tech.textTracks();
- };
- var textTrackConverter = {
- textTracksToJson,
- jsonToTextTracks,
- trackToJson_
- };
-
- /**
- * @file modal-dialog.js
- */
- const MODAL_CLASS_NAME = 'vjs-modal-dialog';
-
- /**
- * The `ModalDialog` displays over the video and its controls, which blocks
- * interaction with the player until it is closed.
- *
- * Modal dialogs include a "Close" button and will close when that button
- * is activated - or when ESC is pressed anywhere.
- *
- * @extends Component
- */
- class ModalDialog extends Component$1 {
- /**
- * Create an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param { import('./utils/dom').ContentDescriptor} [options.content=undefined]
- * Provide customized content for this modal.
- *
- * @param {string} [options.description]
- * A text description for the modal, primarily for accessibility.
- *
- * @param {boolean} [options.fillAlways=false]
- * Normally, modals are automatically filled only the first time
- * they open. This tells the modal to refresh its content
- * every time it opens.
- *
- * @param {string} [options.label]
- * A text label for the modal, primarily for accessibility.
- *
- * @param {boolean} [options.pauseOnOpen=true]
- * If `true`, playback will will be paused if playing when
- * the modal opens, and resumed when it closes.
- *
- * @param {boolean} [options.temporary=true]
- * If `true`, the modal can only be opened once; it will be
- * disposed as soon as it's closed.
- *
- * @param {boolean} [options.uncloseable=false]
- * If `true`, the user will not be able to close the modal
- * through the UI in the normal ways. Programmatic closing is
- * still possible.
- */
- constructor(player, options) {
- super(player, options);
- this.handleKeyDown_ = e => this.handleKeyDown(e);
- this.close_ = e => this.close(e);
- this.opened_ = this.hasBeenOpened_ = this.hasBeenFilled_ = false;
- this.closeable(!this.options_.uncloseable);
- this.content(this.options_.content);
-
- // Make sure the contentEl is defined AFTER any children are initialized
- // because we only want the contents of the modal in the contentEl
- // (not the UI elements like the close button).
- this.contentEl_ = createEl('div', {
- className: `${MODAL_CLASS_NAME}-content`
- }, {
- role: 'document'
- });
- this.descEl_ = createEl('p', {
- className: `${MODAL_CLASS_NAME}-description vjs-control-text`,
- id: this.el().getAttribute('aria-describedby')
- });
- textContent(this.descEl_, this.description());
- this.el_.appendChild(this.descEl_);
- this.el_.appendChild(this.contentEl_);
- }
-
- /**
- * Create the `ModalDialog`'s DOM element
- *
- * @return {Element}
- * The DOM element that gets created.
- */
- createEl() {
- return super.createEl('div', {
- className: this.buildCSSClass(),
- tabIndex: -1
- }, {
- 'aria-describedby': `${this.id()}_description`,
- 'aria-hidden': 'true',
- 'aria-label': this.label(),
- 'role': 'dialog',
- 'aria-live': 'polite'
- });
- }
- dispose() {
- this.contentEl_ = null;
- this.descEl_ = null;
- this.previouslyActiveEl_ = null;
- super.dispose();
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `${MODAL_CLASS_NAME} vjs-hidden ${super.buildCSSClass()}`;
- }
-
- /**
- * Returns the label string for this modal. Primarily used for accessibility.
- *
- * @return {string}
- * the localized or raw label of this modal.
- */
- label() {
- return this.localize(this.options_.label || 'Modal Window');
- }
-
- /**
- * Returns the description string for this modal. Primarily used for
- * accessibility.
- *
- * @return {string}
- * The localized or raw description of this modal.
- */
- description() {
- let desc = this.options_.description || this.localize('This is a modal window.');
-
- // Append a universal closeability message if the modal is closeable.
- if (this.closeable()) {
- desc += ' ' + this.localize('This modal can be closed by pressing the Escape key or activating the close button.');
- }
- return desc;
- }
-
- /**
- * Opens the modal.
- *
- * @fires ModalDialog#beforemodalopen
- * @fires ModalDialog#modalopen
- */
- open() {
- if (this.opened_) {
- if (this.options_.fillAlways) {
- this.fill();
- }
- return;
- }
- const player = this.player();
-
- /**
- * Fired just before a `ModalDialog` is opened.
- *
- * @event ModalDialog#beforemodalopen
- * @type {Event}
- */
- this.trigger('beforemodalopen');
- this.opened_ = true;
-
- // Fill content if the modal has never opened before and
- // never been filled.
- if (this.options_.fillAlways || !this.hasBeenOpened_ && !this.hasBeenFilled_) {
- this.fill();
- }
-
- // If the player was playing, pause it and take note of its previously
- // playing state.
- this.wasPlaying_ = !player.paused();
- if (this.options_.pauseOnOpen && this.wasPlaying_) {
- player.pause();
- }
- this.on('keydown', this.handleKeyDown_);
-
- // Hide controls and note if they were enabled.
- this.hadControls_ = player.controls();
- player.controls(false);
- this.show();
- this.conditionalFocus_();
- this.el().setAttribute('aria-hidden', 'false');
-
- /**
- * Fired just after a `ModalDialog` is opened.
- *
- * @event ModalDialog#modalopen
- * @type {Event}
- */
- this.trigger('modalopen');
- this.hasBeenOpened_ = true;
- }
-
- /**
- * If the `ModalDialog` is currently open or closed.
- *
- * @param {boolean} [value]
- * If given, it will open (`true`) or close (`false`) the modal.
- *
- * @return {boolean}
- * the current open state of the modaldialog
- */
- opened(value) {
- if (typeof value === 'boolean') {
- this[value ? 'open' : 'close']();
- }
- return this.opened_;
- }
-
- /**
- * Closes the modal, does nothing if the `ModalDialog` is
- * not open.
- *
- * @fires ModalDialog#beforemodalclose
- * @fires ModalDialog#modalclose
- */
- close() {
- if (!this.opened_) {
- return;
- }
- const player = this.player();
-
- /**
- * Fired just before a `ModalDialog` is closed.
- *
- * @event ModalDialog#beforemodalclose
- * @type {Event}
- */
- this.trigger('beforemodalclose');
- this.opened_ = false;
- if (this.wasPlaying_ && this.options_.pauseOnOpen) {
- player.play();
- }
- this.off('keydown', this.handleKeyDown_);
- if (this.hadControls_) {
- player.controls(true);
- }
- this.hide();
- this.el().setAttribute('aria-hidden', 'true');
-
- /**
- * Fired just after a `ModalDialog` is closed.
- *
- * @event ModalDialog#modalclose
- * @type {Event}
- */
- this.trigger('modalclose');
- this.conditionalBlur_();
- if (this.options_.temporary) {
- this.dispose();
- }
- }
-
- /**
- * Check to see if the `ModalDialog` is closeable via the UI.
- *
- * @param {boolean} [value]
- * If given as a boolean, it will set the `closeable` option.
- *
- * @return {boolean}
- * Returns the final value of the closable option.
- */
- closeable(value) {
- if (typeof value === 'boolean') {
- const closeable = this.closeable_ = !!value;
- let close = this.getChild('closeButton');
-
- // If this is being made closeable and has no close button, add one.
- if (closeable && !close) {
- // The close button should be a child of the modal - not its
- // content element, so temporarily change the content element.
- const temp = this.contentEl_;
- this.contentEl_ = this.el_;
- close = this.addChild('closeButton', {
- controlText: 'Close Modal Dialog'
- });
- this.contentEl_ = temp;
- this.on(close, 'close', this.close_);
- }
-
- // If this is being made uncloseable and has a close button, remove it.
- if (!closeable && close) {
- this.off(close, 'close', this.close_);
- this.removeChild(close);
- close.dispose();
- }
- }
- return this.closeable_;
- }
-
- /**
- * Fill the modal's content element with the modal's "content" option.
- * The content element will be emptied before this change takes place.
- */
- fill() {
- this.fillWith(this.content());
- }
-
- /**
- * Fill the modal's content element with arbitrary content.
- * The content element will be emptied before this change takes place.
- *
- * @fires ModalDialog#beforemodalfill
- * @fires ModalDialog#modalfill
- *
- * @param { import('./utils/dom').ContentDescriptor} [content]
- * The same rules apply to this as apply to the `content` option.
- */
- fillWith(content) {
- const contentEl = this.contentEl();
- const parentEl = contentEl.parentNode;
- const nextSiblingEl = contentEl.nextSibling;
-
- /**
- * Fired just before a `ModalDialog` is filled with content.
- *
- * @event ModalDialog#beforemodalfill
- * @type {Event}
- */
- this.trigger('beforemodalfill');
- this.hasBeenFilled_ = true;
-
- // Detach the content element from the DOM before performing
- // manipulation to avoid modifying the live DOM multiple times.
- parentEl.removeChild(contentEl);
- this.empty();
- insertContent(contentEl, content);
- /**
- * Fired just after a `ModalDialog` is filled with content.
- *
- * @event ModalDialog#modalfill
- * @type {Event}
- */
- this.trigger('modalfill');
-
- // Re-inject the re-filled content element.
- if (nextSiblingEl) {
- parentEl.insertBefore(contentEl, nextSiblingEl);
- } else {
- parentEl.appendChild(contentEl);
- }
-
- // make sure that the close button is last in the dialog DOM
- const closeButton = this.getChild('closeButton');
- if (closeButton) {
- parentEl.appendChild(closeButton.el_);
- }
- }
-
- /**
- * Empties the content element. This happens anytime the modal is filled.
- *
- * @fires ModalDialog#beforemodalempty
- * @fires ModalDialog#modalempty
- */
- empty() {
- /**
- * Fired just before a `ModalDialog` is emptied.
- *
- * @event ModalDialog#beforemodalempty
- * @type {Event}
- */
- this.trigger('beforemodalempty');
- emptyEl(this.contentEl());
-
- /**
- * Fired just after a `ModalDialog` is emptied.
- *
- * @event ModalDialog#modalempty
- * @type {Event}
- */
- this.trigger('modalempty');
- }
-
- /**
- * Gets or sets the modal content, which gets normalized before being
- * rendered into the DOM.
- *
- * This does not update the DOM or fill the modal, but it is called during
- * that process.
- *
- * @param { import('./utils/dom').ContentDescriptor} [value]
- * If defined, sets the internal content value to be used on the
- * next call(s) to `fill`. This value is normalized before being
- * inserted. To "clear" the internal content value, pass `null`.
- *
- * @return { import('./utils/dom').ContentDescriptor}
- * The current content of the modal dialog
- */
- content(value) {
- if (typeof value !== 'undefined') {
- this.content_ = value;
- }
- return this.content_;
- }
-
- /**
- * conditionally focus the modal dialog if focus was previously on the player.
- *
- * @private
- */
- conditionalFocus_() {
- const activeEl = document.activeElement;
- const playerEl = this.player_.el_;
- this.previouslyActiveEl_ = null;
- if (playerEl.contains(activeEl) || playerEl === activeEl) {
- this.previouslyActiveEl_ = activeEl;
- this.focus();
- }
- }
-
- /**
- * conditionally blur the element and refocus the last focused element
- *
- * @private
- */
- conditionalBlur_() {
- if (this.previouslyActiveEl_) {
- this.previouslyActiveEl_.focus();
- this.previouslyActiveEl_ = null;
- }
- }
-
- /**
- * Keydown handler. Attached when modal is focused.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Do not allow keydowns to reach out of the modal dialog.
- event.stopPropagation();
- if (keycode.isEventKey(event, 'Escape') && this.closeable()) {
- event.preventDefault();
- this.close();
- return;
- }
-
- // exit early if it isn't a tab key
- if (!keycode.isEventKey(event, 'Tab')) {
- return;
- }
- const focusableEls = this.focusableEls_();
- const activeEl = this.el_.querySelector(':focus');
- let focusIndex;
- for (let i = 0; i < focusableEls.length; i++) {
- if (activeEl === focusableEls[i]) {
- focusIndex = i;
- break;
- }
- }
- if (document.activeElement === this.el_) {
- focusIndex = 0;
- }
- if (event.shiftKey && focusIndex === 0) {
- focusableEls[focusableEls.length - 1].focus();
- event.preventDefault();
- } else if (!event.shiftKey && focusIndex === focusableEls.length - 1) {
- focusableEls[0].focus();
- event.preventDefault();
- }
- }
-
- /**
- * get all focusable elements
- *
- * @private
- */
- focusableEls_() {
- const allChildren = this.el_.querySelectorAll('*');
- return Array.prototype.filter.call(allChildren, child => {
- return (child instanceof window.HTMLAnchorElement || child instanceof window.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window.HTMLInputElement || child instanceof window.HTMLSelectElement || child instanceof window.HTMLTextAreaElement || child instanceof window.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window.HTMLIFrameElement || child instanceof window.HTMLObjectElement || child instanceof window.HTMLEmbedElement || child.hasAttribute('tabindex') && child.getAttribute('tabindex') !== -1 || child.hasAttribute('contenteditable');
- });
- }
- }
-
- /**
- * Default options for `ModalDialog` default options.
- *
- * @type {Object}
- * @private
- */
- ModalDialog.prototype.options_ = {
- pauseOnOpen: true,
- temporary: true
- };
- Component$1.registerComponent('ModalDialog', ModalDialog);
-
- /**
- * @file track-list.js
- */
-
- /**
- * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and
- * {@link VideoTrackList}
- *
- * @extends EventTarget
- */
- class TrackList extends EventTarget$2 {
- /**
- * Create an instance of this class
- *
- * @param { import('./track').default[] } tracks
- * A list of tracks to initialize the list with.
- *
- * @abstract
- */
- constructor(tracks = []) {
- super();
- this.tracks_ = [];
-
- /**
- * @memberof TrackList
- * @member {number} length
- * The current number of `Track`s in the this Trackist.
- * @instance
- */
- Object.defineProperty(this, 'length', {
- get() {
- return this.tracks_.length;
- }
- });
- for (let i = 0; i < tracks.length; i++) {
- this.addTrack(tracks[i]);
- }
- }
-
- /**
- * Add a {@link Track} to the `TrackList`
- *
- * @param { import('./track').default } track
- * The audio, video, or text track to add to the list.
- *
- * @fires TrackList#addtrack
- */
- addTrack(track) {
- const index = this.tracks_.length;
- if (!('' + index in this)) {
- Object.defineProperty(this, index, {
- get() {
- return this.tracks_[index];
- }
- });
- }
-
- // Do not add duplicate tracks
- if (this.tracks_.indexOf(track) === -1) {
- this.tracks_.push(track);
- /**
- * Triggered when a track is added to a track list.
- *
- * @event TrackList#addtrack
- * @type {Event}
- * @property {Track} track
- * A reference to track that was added.
- */
- this.trigger({
- track,
- type: 'addtrack',
- target: this
- });
- }
-
- /**
- * Triggered when a track label is changed.
- *
- * @event TrackList#addtrack
- * @type {Event}
- * @property {Track} track
- * A reference to track that was added.
- */
- track.labelchange_ = () => {
- this.trigger({
- track,
- type: 'labelchange',
- target: this
- });
- };
- if (isEvented(track)) {
- track.addEventListener('labelchange', track.labelchange_);
- }
- }
-
- /**
- * Remove a {@link Track} from the `TrackList`
- *
- * @param { import('./track').default } rtrack
- * The audio, video, or text track to remove from the list.
- *
- * @fires TrackList#removetrack
- */
- removeTrack(rtrack) {
- let track;
- for (let i = 0, l = this.length; i < l; i++) {
- if (this[i] === rtrack) {
- track = this[i];
- if (track.off) {
- track.off();
- }
- this.tracks_.splice(i, 1);
- break;
- }
- }
- if (!track) {
- return;
- }
-
- /**
- * Triggered when a track is removed from track list.
- *
- * @event TrackList#removetrack
- * @type {Event}
- * @property {Track} track
- * A reference to track that was removed.
- */
- this.trigger({
- track,
- type: 'removetrack',
- target: this
- });
- }
-
- /**
- * Get a Track from the TrackList by a tracks id
- *
- * @param {string} id - the id of the track to get
- * @method getTrackById
- * @return { import('./track').default }
- * @private
- */
- getTrackById(id) {
- let result = null;
- for (let i = 0, l = this.length; i < l; i++) {
- const track = this[i];
- if (track.id === id) {
- result = track;
- break;
- }
- }
- return result;
- }
- }
-
- /**
- * Triggered when a different track is selected/enabled.
- *
- * @event TrackList#change
- * @type {Event}
- */
-
- /**
- * Events that can be called with on + eventName. See {@link EventHandler}.
- *
- * @property {Object} TrackList#allowedEvents_
- * @protected
- */
- TrackList.prototype.allowedEvents_ = {
- change: 'change',
- addtrack: 'addtrack',
- removetrack: 'removetrack',
- labelchange: 'labelchange'
- };
-
- // emulate attribute EventHandler support to allow for feature detection
- for (const event in TrackList.prototype.allowedEvents_) {
- TrackList.prototype['on' + event] = null;
- }
-
- /**
- * @file audio-track-list.js
- */
-
- /**
- * Anywhere we call this function we diverge from the spec
- * as we only support one enabled audiotrack at a time
- *
- * @param {AudioTrackList} list
- * list to work on
- *
- * @param { import('./audio-track').default } track
- * The track to skip
- *
- * @private
- */
- const disableOthers$1 = function (list, track) {
- for (let i = 0; i < list.length; i++) {
- if (!Object.keys(list[i]).length || track.id === list[i].id) {
- continue;
- }
- // another audio track is enabled, disable it
- list[i].enabled = false;
- }
- };
-
- /**
- * The current list of {@link AudioTrack} for a media file.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist}
- * @extends TrackList
- */
- class AudioTrackList extends TrackList {
- /**
- * Create an instance of this class.
- *
- * @param { import('./audio-track').default[] } [tracks=[]]
- * A list of `AudioTrack` to instantiate the list with.
- */
- constructor(tracks = []) {
- // make sure only 1 track is enabled
- // sorted from last index to first index
- for (let i = tracks.length - 1; i >= 0; i--) {
- if (tracks[i].enabled) {
- disableOthers$1(tracks, tracks[i]);
- break;
- }
- }
- super(tracks);
- this.changing_ = false;
- }
-
- /**
- * Add an {@link AudioTrack} to the `AudioTrackList`.
- *
- * @param { import('./audio-track').default } track
- * The AudioTrack to add to the list
- *
- * @fires TrackList#addtrack
- */
- addTrack(track) {
- if (track.enabled) {
- disableOthers$1(this, track);
- }
- super.addTrack(track);
- // native tracks don't have this
- if (!track.addEventListener) {
- return;
- }
- track.enabledChange_ = () => {
- // when we are disabling other tracks (since we don't support
- // more than one track at a time) we will set changing_
- // to true so that we don't trigger additional change events
- if (this.changing_) {
- return;
- }
- this.changing_ = true;
- disableOthers$1(this, track);
- this.changing_ = false;
- this.trigger('change');
- };
-
- /**
- * @listens AudioTrack#enabledchange
- * @fires TrackList#change
- */
- track.addEventListener('enabledchange', track.enabledChange_);
- }
- removeTrack(rtrack) {
- super.removeTrack(rtrack);
- if (rtrack.removeEventListener && rtrack.enabledChange_) {
- rtrack.removeEventListener('enabledchange', rtrack.enabledChange_);
- rtrack.enabledChange_ = null;
- }
- }
- }
-
- /**
- * @file video-track-list.js
- */
-
- /**
- * Un-select all other {@link VideoTrack}s that are selected.
- *
- * @param {VideoTrackList} list
- * list to work on
- *
- * @param { import('./video-track').default } track
- * The track to skip
- *
- * @private
- */
- const disableOthers = function (list, track) {
- for (let i = 0; i < list.length; i++) {
- if (!Object.keys(list[i]).length || track.id === list[i].id) {
- continue;
- }
- // another video track is enabled, disable it
- list[i].selected = false;
- }
- };
-
- /**
- * The current list of {@link VideoTrack} for a video.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist}
- * @extends TrackList
- */
- class VideoTrackList extends TrackList {
- /**
- * Create an instance of this class.
- *
- * @param {VideoTrack[]} [tracks=[]]
- * A list of `VideoTrack` to instantiate the list with.
- */
- constructor(tracks = []) {
- // make sure only 1 track is enabled
- // sorted from last index to first index
- for (let i = tracks.length - 1; i >= 0; i--) {
- if (tracks[i].selected) {
- disableOthers(tracks, tracks[i]);
- break;
- }
- }
- super(tracks);
- this.changing_ = false;
-
- /**
- * @member {number} VideoTrackList#selectedIndex
- * The current index of the selected {@link VideoTrack`}.
- */
- Object.defineProperty(this, 'selectedIndex', {
- get() {
- for (let i = 0; i < this.length; i++) {
- if (this[i].selected) {
- return i;
- }
- }
- return -1;
- },
- set() {}
- });
- }
-
- /**
- * Add a {@link VideoTrack} to the `VideoTrackList`.
- *
- * @param { import('./video-track').default } track
- * The VideoTrack to add to the list
- *
- * @fires TrackList#addtrack
- */
- addTrack(track) {
- if (track.selected) {
- disableOthers(this, track);
- }
- super.addTrack(track);
- // native tracks don't have this
- if (!track.addEventListener) {
- return;
- }
- track.selectedChange_ = () => {
- if (this.changing_) {
- return;
- }
- this.changing_ = true;
- disableOthers(this, track);
- this.changing_ = false;
- this.trigger('change');
- };
-
- /**
- * @listens VideoTrack#selectedchange
- * @fires TrackList#change
- */
- track.addEventListener('selectedchange', track.selectedChange_);
- }
- removeTrack(rtrack) {
- super.removeTrack(rtrack);
- if (rtrack.removeEventListener && rtrack.selectedChange_) {
- rtrack.removeEventListener('selectedchange', rtrack.selectedChange_);
- rtrack.selectedChange_ = null;
- }
- }
- }
-
- /**
- * @file text-track-list.js
- */
-
- /**
- * The current list of {@link TextTrack} for a media file.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttracklist}
- * @extends TrackList
- */
- class TextTrackList extends TrackList {
- /**
- * Add a {@link TextTrack} to the `TextTrackList`
- *
- * @param { import('./text-track').default } track
- * The text track to add to the list.
- *
- * @fires TrackList#addtrack
- */
- addTrack(track) {
- super.addTrack(track);
- if (!this.queueChange_) {
- this.queueChange_ = () => this.queueTrigger('change');
- }
- if (!this.triggerSelectedlanguagechange) {
- this.triggerSelectedlanguagechange_ = () => this.trigger('selectedlanguagechange');
- }
-
- /**
- * @listens TextTrack#modechange
- * @fires TrackList#change
- */
- track.addEventListener('modechange', this.queueChange_);
- const nonLanguageTextTrackKind = ['metadata', 'chapters'];
- if (nonLanguageTextTrackKind.indexOf(track.kind) === -1) {
- track.addEventListener('modechange', this.triggerSelectedlanguagechange_);
- }
- }
- removeTrack(rtrack) {
- super.removeTrack(rtrack);
-
- // manually remove the event handlers we added
- if (rtrack.removeEventListener) {
- if (this.queueChange_) {
- rtrack.removeEventListener('modechange', this.queueChange_);
- }
- if (this.selectedlanguagechange_) {
- rtrack.removeEventListener('modechange', this.triggerSelectedlanguagechange_);
- }
- }
- }
- }
-
- /**
- * @file html-track-element-list.js
- */
-
- /**
- * The current list of {@link HtmlTrackElement}s.
- */
- class HtmlTrackElementList {
- /**
- * Create an instance of this class.
- *
- * @param {HtmlTrackElement[]} [tracks=[]]
- * A list of `HtmlTrackElement` to instantiate the list with.
- */
- constructor(trackElements = []) {
- this.trackElements_ = [];
-
- /**
- * @memberof HtmlTrackElementList
- * @member {number} length
- * The current number of `Track`s in the this Trackist.
- * @instance
- */
- Object.defineProperty(this, 'length', {
- get() {
- return this.trackElements_.length;
- }
- });
- for (let i = 0, length = trackElements.length; i < length; i++) {
- this.addTrackElement_(trackElements[i]);
- }
- }
-
- /**
- * Add an {@link HtmlTrackElement} to the `HtmlTrackElementList`
- *
- * @param {HtmlTrackElement} trackElement
- * The track element to add to the list.
- *
- * @private
- */
- addTrackElement_(trackElement) {
- const index = this.trackElements_.length;
- if (!('' + index in this)) {
- Object.defineProperty(this, index, {
- get() {
- return this.trackElements_[index];
- }
- });
- }
-
- // Do not add duplicate elements
- if (this.trackElements_.indexOf(trackElement) === -1) {
- this.trackElements_.push(trackElement);
- }
- }
-
- /**
- * Get an {@link HtmlTrackElement} from the `HtmlTrackElementList` given an
- * {@link TextTrack}.
- *
- * @param {TextTrack} track
- * The track associated with a track element.
- *
- * @return {HtmlTrackElement|undefined}
- * The track element that was found or undefined.
- *
- * @private
- */
- getTrackElementByTrack_(track) {
- let trackElement_;
- for (let i = 0, length = this.trackElements_.length; i < length; i++) {
- if (track === this.trackElements_[i].track) {
- trackElement_ = this.trackElements_[i];
- break;
- }
- }
- return trackElement_;
- }
-
- /**
- * Remove a {@link HtmlTrackElement} from the `HtmlTrackElementList`
- *
- * @param {HtmlTrackElement} trackElement
- * The track element to remove from the list.
- *
- * @private
- */
- removeTrackElement_(trackElement) {
- for (let i = 0, length = this.trackElements_.length; i < length; i++) {
- if (trackElement === this.trackElements_[i]) {
- if (this.trackElements_[i].track && typeof this.trackElements_[i].track.off === 'function') {
- this.trackElements_[i].track.off();
- }
- if (typeof this.trackElements_[i].off === 'function') {
- this.trackElements_[i].off();
- }
- this.trackElements_.splice(i, 1);
- break;
- }
- }
- }
- }
-
- /**
- * @file text-track-cue-list.js
- */
-
- /**
- * @typedef {Object} TextTrackCueList~TextTrackCue
- *
- * @property {string} id
- * The unique id for this text track cue
- *
- * @property {number} startTime
- * The start time for this text track cue
- *
- * @property {number} endTime
- * The end time for this text track cue
- *
- * @property {boolean} pauseOnExit
- * Pause when the end time is reached if true.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcue}
- */
-
- /**
- * A List of TextTrackCues.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackcuelist}
- */
- class TextTrackCueList {
- /**
- * Create an instance of this class..
- *
- * @param {Array} cues
- * A list of cues to be initialized with
- */
- constructor(cues) {
- TextTrackCueList.prototype.setCues_.call(this, cues);
-
- /**
- * @memberof TextTrackCueList
- * @member {number} length
- * The current number of `TextTrackCue`s in the TextTrackCueList.
- * @instance
- */
- Object.defineProperty(this, 'length', {
- get() {
- return this.length_;
- }
- });
- }
-
- /**
- * A setter for cues in this list. Creates getters
- * an an index for the cues.
- *
- * @param {Array} cues
- * An array of cues to set
- *
- * @private
- */
- setCues_(cues) {
- const oldLength = this.length || 0;
- let i = 0;
- const l = cues.length;
- this.cues_ = cues;
- this.length_ = cues.length;
- const defineProp = function (index) {
- if (!('' + index in this)) {
- Object.defineProperty(this, '' + index, {
- get() {
- return this.cues_[index];
- }
- });
- }
- };
- if (oldLength < l) {
- i = oldLength;
- for (; i < l; i++) {
- defineProp.call(this, i);
- }
- }
- }
-
- /**
- * Get a `TextTrackCue` that is currently in the `TextTrackCueList` by id.
- *
- * @param {string} id
- * The id of the cue that should be searched for.
- *
- * @return {TextTrackCueList~TextTrackCue|null}
- * A single cue or null if none was found.
- */
- getCueById(id) {
- let result = null;
- for (let i = 0, l = this.length; i < l; i++) {
- const cue = this[i];
- if (cue.id === id) {
- result = cue;
- break;
- }
- }
- return result;
- }
- }
-
- /**
- * @file track-kinds.js
- */
-
- /**
- * All possible `VideoTrackKind`s
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-videotrack-kind
- * @typedef VideoTrack~Kind
- * @enum
- */
- const VideoTrackKind = {
- alternative: 'alternative',
- captions: 'captions',
- main: 'main',
- sign: 'sign',
- subtitles: 'subtitles',
- commentary: 'commentary'
- };
-
- /**
- * All possible `AudioTrackKind`s
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-audiotrack-kind
- * @typedef AudioTrack~Kind
- * @enum
- */
- const AudioTrackKind = {
- 'alternative': 'alternative',
- 'descriptions': 'descriptions',
- 'main': 'main',
- 'main-desc': 'main-desc',
- 'translation': 'translation',
- 'commentary': 'commentary'
- };
-
- /**
- * All possible `TextTrackKind`s
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-texttrack-kind
- * @typedef TextTrack~Kind
- * @enum
- */
- const TextTrackKind = {
- subtitles: 'subtitles',
- captions: 'captions',
- descriptions: 'descriptions',
- chapters: 'chapters',
- metadata: 'metadata'
- };
-
- /**
- * All possible `TextTrackMode`s
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#texttrackmode
- * @typedef TextTrack~Mode
- * @enum
- */
- const TextTrackMode = {
- disabled: 'disabled',
- hidden: 'hidden',
- showing: 'showing'
- };
-
- /**
- * @file track.js
- */
-
- /**
- * A Track class that contains all of the common functionality for {@link AudioTrack},
- * {@link VideoTrack}, and {@link TextTrack}.
- *
- * > Note: This class should not be used directly
- *
- * @see {@link https://html.spec.whatwg.org/multipage/embedded-content.html}
- * @extends EventTarget
- * @abstract
- */
- class Track extends EventTarget$2 {
- /**
- * Create an instance of this class.
- *
- * @param {Object} [options={}]
- * Object of option names and values
- *
- * @param {string} [options.kind='']
- * A valid kind for the track type you are creating.
- *
- * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
- * A unique id for this AudioTrack.
- *
- * @param {string} [options.label='']
- * The menu label for this track.
- *
- * @param {string} [options.language='']
- * A valid two character language code.
- *
- * @abstract
- */
- constructor(options = {}) {
- super();
- const trackProps = {
- id: options.id || 'vjs_track_' + newGUID(),
- kind: options.kind || '',
- language: options.language || ''
- };
- let label = options.label || '';
-
- /**
- * @memberof Track
- * @member {string} id
- * The id of this track. Cannot be changed after creation.
- * @instance
- *
- * @readonly
- */
-
- /**
- * @memberof Track
- * @member {string} kind
- * The kind of track that this is. Cannot be changed after creation.
- * @instance
- *
- * @readonly
- */
-
- /**
- * @memberof Track
- * @member {string} language
- * The two letter language code for this track. Cannot be changed after
- * creation.
- * @instance
- *
- * @readonly
- */
-
- for (const key in trackProps) {
- Object.defineProperty(this, key, {
- get() {
- return trackProps[key];
- },
- set() {}
- });
- }
-
- /**
- * @memberof Track
- * @member {string} label
- * The label of this track. Cannot be changed after creation.
- * @instance
- *
- * @fires Track#labelchange
- */
- Object.defineProperty(this, 'label', {
- get() {
- return label;
- },
- set(newLabel) {
- if (newLabel !== label) {
- label = newLabel;
-
- /**
- * An event that fires when label changes on this track.
- *
- * > Note: This is not part of the spec!
- *
- * @event Track#labelchange
- * @type {Event}
- */
- this.trigger('labelchange');
- }
- }
- });
- }
- }
-
- /**
- * @file url.js
- * @module url
- */
-
- /**
- * @typedef {Object} url:URLObject
- *
- * @property {string} protocol
- * The protocol of the url that was parsed.
- *
- * @property {string} hostname
- * The hostname of the url that was parsed.
- *
- * @property {string} port
- * The port of the url that was parsed.
- *
- * @property {string} pathname
- * The pathname of the url that was parsed.
- *
- * @property {string} search
- * The search query of the url that was parsed.
- *
- * @property {string} hash
- * The hash of the url that was parsed.
- *
- * @property {string} host
- * The host of the url that was parsed.
- */
-
- /**
- * Resolve and parse the elements of a URL.
- *
- * @function
- * @param {String} url
- * The url to parse
- *
- * @return {url:URLObject}
- * An object of url details
- */
- const parseUrl = function (url) {
- // This entire method can be replace with URL once we are able to drop IE11
-
- const props = ['protocol', 'hostname', 'port', 'pathname', 'search', 'hash', 'host'];
-
- // add the url to an anchor and let the browser parse the URL
- const a = document.createElement('a');
- a.href = url;
-
- // Copy the specific URL properties to a new object
- // This is also needed for IE because the anchor loses its
- // properties when it's removed from the dom
- const details = {};
- for (let i = 0; i < props.length; i++) {
- details[props[i]] = a[props[i]];
- }
-
- // IE adds the port to the host property unlike everyone else. If
- // a port identifier is added for standard ports, strip it.
- if (details.protocol === 'http:') {
- details.host = details.host.replace(/:80$/, '');
- }
- if (details.protocol === 'https:') {
- details.host = details.host.replace(/:443$/, '');
- }
- if (!details.protocol) {
- details.protocol = window.location.protocol;
- }
-
- /* istanbul ignore if */
- if (!details.host) {
- details.host = window.location.host;
- }
- return details;
- };
-
- /**
- * Get absolute version of relative URL.
- *
- * @function
- * @param {string} url
- * URL to make absolute
- *
- * @return {string}
- * Absolute URL
- *
- * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue
- */
- const getAbsoluteURL = function (url) {
- // Check if absolute URL
- if (!url.match(/^https?:\/\//)) {
- // Add the url to an anchor and let the browser parse it to convert to an absolute url
- const a = document.createElement('a');
- a.href = url;
- url = a.href;
- }
- return url;
- };
-
- /**
- * Returns the extension of the passed file name. It will return an empty string
- * if passed an invalid path.
- *
- * @function
- * @param {string} path
- * The fileName path like '/path/to/file.mp4'
- *
- * @return {string}
- * The extension in lower case or an empty string if no
- * extension could be found.
- */
- const getFileExtension = function (path) {
- if (typeof path === 'string') {
- const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/;
- const pathParts = splitPathRe.exec(path);
- if (pathParts) {
- return pathParts.pop().toLowerCase();
- }
- }
- return '';
- };
-
- /**
- * Returns whether the url passed is a cross domain request or not.
- *
- * @function
- * @param {string} url
- * The url to check.
- *
- * @param {Object} [winLoc]
- * the domain to check the url against, defaults to window.location
- *
- * @param {string} [winLoc.protocol]
- * The window location protocol defaults to window.location.protocol
- *
- * @param {string} [winLoc.host]
- * The window location host defaults to window.location.host
- *
- * @return {boolean}
- * Whether it is a cross domain request or not.
- */
- const isCrossOrigin = function (url, winLoc = window.location) {
- const urlInfo = parseUrl(url);
-
- // IE8 protocol relative urls will return ':' for protocol
- const srcProtocol = urlInfo.protocol === ':' ? winLoc.protocol : urlInfo.protocol;
-
- // Check if url is for another domain/origin
- // IE8 doesn't know location.origin, so we won't rely on it here
- const crossOrigin = srcProtocol + urlInfo.host !== winLoc.protocol + winLoc.host;
- return crossOrigin;
- };
-
- var Url = /*#__PURE__*/Object.freeze({
- __proto__: null,
- parseUrl: parseUrl,
- getAbsoluteURL: getAbsoluteURL,
- getFileExtension: getFileExtension,
- isCrossOrigin: isCrossOrigin
- });
-
- var win;
- if (typeof window !== "undefined") {
- win = window;
- } else if (typeof commonjsGlobal !== "undefined") {
- win = commonjsGlobal;
- } else if (typeof self !== "undefined") {
- win = self;
- } else {
- win = {};
- }
- var window_1 = win;
-
- var _extends_1 = createCommonjsModule(function (module) {
- function _extends() {
- module.exports = _extends = Object.assign ? Object.assign.bind() : function (target) {
- for (var i = 1; i < arguments.length; i++) {
- var source = arguments[i];
- for (var key in source) {
- if (Object.prototype.hasOwnProperty.call(source, key)) {
- target[key] = source[key];
- }
- }
- }
- return target;
- }, module.exports.__esModule = true, module.exports["default"] = module.exports;
- return _extends.apply(this, arguments);
- }
- module.exports = _extends, module.exports.__esModule = true, module.exports["default"] = module.exports;
- });
- var _extends$1 = unwrapExports(_extends_1);
-
- var isFunction_1 = isFunction;
- var toString = Object.prototype.toString;
- function isFunction(fn) {
- if (!fn) {
- return false;
- }
- var string = toString.call(fn);
- return string === '[object Function]' || typeof fn === 'function' && string !== '[object RegExp]' || typeof window !== 'undefined' && (
- // IE8 and below
- fn === window.setTimeout || fn === window.alert || fn === window.confirm || fn === window.prompt);
- }
-
- var httpResponseHandler = function httpResponseHandler(callback, decodeResponseBody) {
- if (decodeResponseBody === void 0) {
- decodeResponseBody = false;
- }
- return function (err, response, responseBody) {
- // if the XHR failed, return that error
- if (err) {
- callback(err);
- return;
- } // if the HTTP status code is 4xx or 5xx, the request also failed
-
- if (response.statusCode >= 400 && response.statusCode <= 599) {
- var cause = responseBody;
- if (decodeResponseBody) {
- if (window_1.TextDecoder) {
- var charset = getCharset(response.headers && response.headers['content-type']);
- try {
- cause = new TextDecoder(charset).decode(responseBody);
- } catch (e) {}
- } else {
- cause = String.fromCharCode.apply(null, new Uint8Array(responseBody));
- }
- }
- callback({
- cause: cause
- });
- return;
- } // otherwise, request succeeded
-
- callback(null, responseBody);
- };
- };
- function getCharset(contentTypeHeader) {
- if (contentTypeHeader === void 0) {
- contentTypeHeader = '';
- }
- return contentTypeHeader.toLowerCase().split(';').reduce(function (charset, contentType) {
- var _contentType$split = contentType.split('='),
- type = _contentType$split[0],
- value = _contentType$split[1];
- if (type.trim() === 'charset') {
- return value.trim();
- }
- return charset;
- }, 'utf-8');
- }
- var httpHandler = httpResponseHandler;
-
- createXHR.httpHandler = httpHandler;
- /**
- * @license
- * slighly modified parse-headers 2.0.2 <https://github.com/kesla/parse-headers/>
- * Copyright (c) 2014 David Björklund
- * Available under the MIT license
- * <https://github.com/kesla/parse-headers/blob/master/LICENCE>
- */
-
- var parseHeaders = function parseHeaders(headers) {
- var result = {};
- if (!headers) {
- return result;
- }
- headers.trim().split('\n').forEach(function (row) {
- var index = row.indexOf(':');
- var key = row.slice(0, index).trim().toLowerCase();
- var value = row.slice(index + 1).trim();
- if (typeof result[key] === 'undefined') {
- result[key] = value;
- } else if (Array.isArray(result[key])) {
- result[key].push(value);
- } else {
- result[key] = [result[key], value];
- }
- });
- return result;
- };
- var lib = createXHR; // Allow use of default import syntax in TypeScript
-
- var default_1 = createXHR;
- createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop$1;
- createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest;
- forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) {
- createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) {
- options = initParams(uri, options, callback);
- options.method = method.toUpperCase();
- return _createXHR(options);
- };
- });
- function forEachArray(array, iterator) {
- for (var i = 0; i < array.length; i++) {
- iterator(array[i]);
- }
- }
- function isEmpty(obj) {
- for (var i in obj) {
- if (obj.hasOwnProperty(i)) return false;
- }
- return true;
- }
- function initParams(uri, options, callback) {
- var params = uri;
- if (isFunction_1(options)) {
- callback = options;
- if (typeof uri === "string") {
- params = {
- uri: uri
- };
- }
- } else {
- params = _extends_1({}, options, {
- uri: uri
- });
- }
- params.callback = callback;
- return params;
- }
- function createXHR(uri, options, callback) {
- options = initParams(uri, options, callback);
- return _createXHR(options);
- }
- function _createXHR(options) {
- if (typeof options.callback === "undefined") {
- throw new Error("callback argument missing");
- }
- var called = false;
- var callback = function cbOnce(err, response, body) {
- if (!called) {
- called = true;
- options.callback(err, response, body);
- }
- };
- function readystatechange() {
- if (xhr.readyState === 4) {
- setTimeout(loadFunc, 0);
- }
- }
- function getBody() {
- // Chrome with requestType=blob throws errors arround when even testing access to responseText
- var body = undefined;
- if (xhr.response) {
- body = xhr.response;
- } else {
- body = xhr.responseText || getXml(xhr);
- }
- if (isJson) {
- try {
- body = JSON.parse(body);
- } catch (e) {}
- }
- return body;
- }
- function errorFunc(evt) {
- clearTimeout(timeoutTimer);
- if (!(evt instanceof Error)) {
- evt = new Error("" + (evt || "Unknown XMLHttpRequest Error"));
- }
- evt.statusCode = 0;
- return callback(evt, failureResponse);
- } // will load the data & process the response in a special response object
-
- function loadFunc() {
- if (aborted) return;
- var status;
- clearTimeout(timeoutTimer);
- if (options.useXDR && xhr.status === undefined) {
- //IE8 CORS GET successful response doesn't have a status field, but body is fine
- status = 200;
- } else {
- status = xhr.status === 1223 ? 204 : xhr.status;
- }
- var response = failureResponse;
- var err = null;
- if (status !== 0) {
- response = {
- body: getBody(),
- statusCode: status,
- method: method,
- headers: {},
- url: uri,
- rawRequest: xhr
- };
- if (xhr.getAllResponseHeaders) {
- //remember xhr can in fact be XDR for CORS in IE
- response.headers = parseHeaders(xhr.getAllResponseHeaders());
- }
- } else {
- err = new Error("Internal XMLHttpRequest Error");
- }
- return callback(err, response, response.body);
- }
- var xhr = options.xhr || null;
- if (!xhr) {
- if (options.cors || options.useXDR) {
- xhr = new createXHR.XDomainRequest();
- } else {
- xhr = new createXHR.XMLHttpRequest();
- }
- }
- var key;
- var aborted;
- var uri = xhr.url = options.uri || options.url;
- var method = xhr.method = options.method || "GET";
- var body = options.body || options.data;
- var headers = xhr.headers = options.headers || {};
- var sync = !!options.sync;
- var isJson = false;
- var timeoutTimer;
- var failureResponse = {
- body: undefined,
- headers: {},
- statusCode: 0,
- method: method,
- url: uri,
- rawRequest: xhr
- };
- if ("json" in options && options.json !== false) {
- isJson = true;
- headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user
-
- if (method !== "GET" && method !== "HEAD") {
- headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user
-
- body = JSON.stringify(options.json === true ? body : options.json);
- }
- }
- xhr.onreadystatechange = readystatechange;
- xhr.onload = loadFunc;
- xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.
-
- xhr.onprogress = function () {// IE must die
- };
- xhr.onabort = function () {
- aborted = true;
- };
- xhr.ontimeout = errorFunc;
- xhr.open(method, uri, !sync, options.username, options.password); //has to be after open
-
- if (!sync) {
- xhr.withCredentials = !!options.withCredentials;
- } // Cannot set timeout with sync request
- // not setting timeout on the xhr object, because of old webkits etc. not handling that correctly
- // both npm's request and jquery 1.x use this kind of timeout, so this is being consistent
-
- if (!sync && options.timeout > 0) {
- timeoutTimer = setTimeout(function () {
- if (aborted) return;
- aborted = true; //IE9 may still call readystatechange
-
- xhr.abort("timeout");
- var e = new Error("XMLHttpRequest timeout");
- e.code = "ETIMEDOUT";
- errorFunc(e);
- }, options.timeout);
- }
- if (xhr.setRequestHeader) {
- for (key in headers) {
- if (headers.hasOwnProperty(key)) {
- xhr.setRequestHeader(key, headers[key]);
- }
- }
- } else if (options.headers && !isEmpty(options.headers)) {
- throw new Error("Headers cannot be set on an XDomainRequest object");
- }
- if ("responseType" in options) {
- xhr.responseType = options.responseType;
- }
- if ("beforeSend" in options && typeof options.beforeSend === "function") {
- options.beforeSend(xhr);
- } // Microsoft Edge browser sends "undefined" when send is called with undefined value.
- // XMLHttpRequest spec says to pass null as body to indicate no body
- // See https://github.com/naugtur/xhr/issues/100.
-
- xhr.send(body || null);
- return xhr;
- }
- function getXml(xhr) {
- // xhr.responseXML will throw Exception "InvalidStateError" or "DOMException"
- // See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.
- try {
- if (xhr.responseType === "document") {
- return xhr.responseXML;
- }
- var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror";
- if (xhr.responseType === "" && !firefoxBugTakenEffect) {
- return xhr.responseXML;
- }
- } catch (e) {}
- return null;
- }
- function noop$1() {}
- lib.default = default_1;
-
- /**
- * @file text-track.js
- */
-
- /**
- * Takes a webvtt file contents and parses it into cues
- *
- * @param {string} srcContent
- * webVTT file contents
- *
- * @param {TextTrack} track
- * TextTrack to add cues to. Cues come from the srcContent.
- *
- * @private
- */
- const parseCues = function (srcContent, track) {
- const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder());
- const errors = [];
- parser.oncue = function (cue) {
- track.addCue(cue);
- };
- parser.onparsingerror = function (error) {
- errors.push(error);
- };
- parser.onflush = function () {
- track.trigger({
- type: 'loadeddata',
- target: track
- });
- };
- parser.parse(srcContent);
- if (errors.length > 0) {
- if (window.console && window.console.groupCollapsed) {
- window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`);
- }
- errors.forEach(error => log$1.error(error));
- if (window.console && window.console.groupEnd) {
- window.console.groupEnd();
- }
- }
- parser.flush();
- };
-
- /**
- * Load a `TextTrack` from a specified url.
- *
- * @param {string} src
- * Url to load track from.
- *
- * @param {TextTrack} track
- * Track to add cues to. Comes from the content at the end of `url`.
- *
- * @private
- */
- const loadTrack = function (src, track) {
- const opts = {
- uri: src
- };
- const crossOrigin = isCrossOrigin(src);
- if (crossOrigin) {
- opts.cors = crossOrigin;
- }
- const withCredentials = track.tech_.crossOrigin() === 'use-credentials';
- if (withCredentials) {
- opts.withCredentials = withCredentials;
- }
- lib(opts, bind_(this, function (err, response, responseBody) {
- if (err) {
- return log$1.error(err, response);
- }
- track.loaded_ = true;
-
- // Make sure that vttjs has loaded, otherwise, wait till it finished loading
- // NOTE: this is only used for the alt/video.novtt.js build
- if (typeof window.WebVTT !== 'function') {
- if (track.tech_) {
- // to prevent use before define eslint error, we define loadHandler
- // as a let here
- track.tech_.any(['vttjsloaded', 'vttjserror'], event => {
- if (event.type === 'vttjserror') {
- log$1.error(`vttjs failed to load, stopping trying to process ${track.src}`);
- return;
- }
- return parseCues(responseBody, track);
- });
- }
- } else {
- parseCues(responseBody, track);
- }
- }));
- };
-
- /**
- * A representation of a single `TextTrack`.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}
- * @extends Track
- */
- class TextTrack extends Track {
- /**
- * Create an instance of this class.
- *
- * @param {Object} options={}
- * Object of option names and values
- *
- * @param { import('../tech/tech').default } options.tech
- * A reference to the tech that owns this TextTrack.
- *
- * @param {TextTrack~Kind} [options.kind='subtitles']
- * A valid text track kind.
- *
- * @param {TextTrack~Mode} [options.mode='disabled']
- * A valid text track mode.
- *
- * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
- * A unique id for this TextTrack.
- *
- * @param {string} [options.label='']
- * The menu label for this track.
- *
- * @param {string} [options.language='']
- * A valid two character language code.
- *
- * @param {string} [options.srclang='']
- * A valid two character language code. An alternative, but deprioritized
- * version of `options.language`
- *
- * @param {string} [options.src]
- * A url to TextTrack cues.
- *
- * @param {boolean} [options.default]
- * If this track should default to on or off.
- */
- constructor(options = {}) {
- if (!options.tech) {
- throw new Error('A tech was not provided.');
- }
- const settings = merge$2(options, {
- kind: TextTrackKind[options.kind] || 'subtitles',
- language: options.language || options.srclang || ''
- });
- let mode = TextTrackMode[settings.mode] || 'disabled';
- const default_ = settings.default;
- if (settings.kind === 'metadata' || settings.kind === 'chapters') {
- mode = 'hidden';
- }
- super(settings);
- this.tech_ = settings.tech;
- this.cues_ = [];
- this.activeCues_ = [];
- this.preload_ = this.tech_.preloadTextTracks !== false;
- const cues = new TextTrackCueList(this.cues_);
- const activeCues = new TextTrackCueList(this.activeCues_);
- let changed = false;
- this.timeupdateHandler = bind_(this, function (event = {}) {
- if (this.tech_.isDisposed()) {
- return;
- }
- if (!this.tech_.isReady_) {
- if (event.type !== 'timeupdate') {
- this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
- }
- return;
- }
-
- // Accessing this.activeCues for the side-effects of updating itself
- // due to its nature as a getter function. Do not remove or cues will
- // stop updating!
- // Use the setter to prevent deletion from uglify (pure_getters rule)
- this.activeCues = this.activeCues;
- if (changed) {
- this.trigger('cuechange');
- changed = false;
- }
- if (event.type !== 'timeupdate') {
- this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
- }
- });
- const disposeHandler = () => {
- this.stopTracking();
- };
- this.tech_.one('dispose', disposeHandler);
- if (mode !== 'disabled') {
- this.startTracking();
- }
- Object.defineProperties(this, {
- /**
- * @memberof TextTrack
- * @member {boolean} default
- * If this track was set to be on or off by default. Cannot be changed after
- * creation.
- * @instance
- *
- * @readonly
- */
- default: {
- get() {
- return default_;
- },
- set() {}
- },
- /**
- * @memberof TextTrack
- * @member {string} mode
- * Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will
- * not be set if setting to an invalid mode.
- * @instance
- *
- * @fires TextTrack#modechange
- */
- mode: {
- get() {
- return mode;
- },
- set(newMode) {
- if (!TextTrackMode[newMode]) {
- return;
- }
- if (mode === newMode) {
- return;
- }
- mode = newMode;
- if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {
- // On-demand load.
- loadTrack(this.src, this);
- }
- this.stopTracking();
- if (mode !== 'disabled') {
- this.startTracking();
- }
- /**
- * An event that fires when mode changes on this track. This allows
- * the TextTrackList that holds this track to act accordingly.
- *
- * > Note: This is not part of the spec!
- *
- * @event TextTrack#modechange
- * @type {Event}
- */
- this.trigger('modechange');
- }
- },
- /**
- * @memberof TextTrack
- * @member {TextTrackCueList} cues
- * The text track cue list for this TextTrack.
- * @instance
- */
- cues: {
- get() {
- if (!this.loaded_) {
- return null;
- }
- return cues;
- },
- set() {}
- },
- /**
- * @memberof TextTrack
- * @member {TextTrackCueList} activeCues
- * The list text track cues that are currently active for this TextTrack.
- * @instance
- */
- activeCues: {
- get() {
- if (!this.loaded_) {
- return null;
- }
-
- // nothing to do
- if (this.cues.length === 0) {
- return activeCues;
- }
- const ct = this.tech_.currentTime();
- const active = [];
- for (let i = 0, l = this.cues.length; i < l; i++) {
- const cue = this.cues[i];
- if (cue.startTime <= ct && cue.endTime >= ct) {
- active.push(cue);
- }
- }
- changed = false;
- if (active.length !== this.activeCues_.length) {
- changed = true;
- } else {
- for (let i = 0; i < active.length; i++) {
- if (this.activeCues_.indexOf(active[i]) === -1) {
- changed = true;
- }
- }
- }
- this.activeCues_ = active;
- activeCues.setCues_(this.activeCues_);
- return activeCues;
- },
- // /!\ Keep this setter empty (see the timeupdate handler above)
- set() {}
- }
- });
- if (settings.src) {
- this.src = settings.src;
- if (!this.preload_) {
- // Tracks will load on-demand.
- // Act like we're loaded for other purposes.
- this.loaded_ = true;
- }
- if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {
- loadTrack(this.src, this);
- }
- } else {
- this.loaded_ = true;
- }
- }
- startTracking() {
- // More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback
- this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
- // Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)
- this.tech_.on('timeupdate', this.timeupdateHandler);
- }
- stopTracking() {
- if (this.rvf_) {
- this.tech_.cancelVideoFrameCallback(this.rvf_);
- this.rvf_ = undefined;
- }
- this.tech_.off('timeupdate', this.timeupdateHandler);
- }
-
- /**
- * Add a cue to the internal list of cues.
- *
- * @param {TextTrack~Cue} cue
- * The cue to add to our internal list
- */
- addCue(originalCue) {
- let cue = originalCue;
-
- // Testing if the cue is a VTTCue in a way that survives minification
- if (!('getCueAsHTML' in cue)) {
- cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);
- for (const prop in originalCue) {
- if (!(prop in cue)) {
- cue[prop] = originalCue[prop];
- }
- }
-
- // make sure that `id` is copied over
- cue.id = originalCue.id;
- cue.originalCue_ = originalCue;
- }
- const tracks = this.tech_.textTracks();
- for (let i = 0; i < tracks.length; i++) {
- if (tracks[i] !== this) {
- tracks[i].removeCue(cue);
- }
- }
- this.cues_.push(cue);
- this.cues.setCues_(this.cues_);
- }
-
- /**
- * Remove a cue from our internal list
- *
- * @param {TextTrack~Cue} removeCue
- * The cue to remove from our internal list
- */
- removeCue(removeCue) {
- let i = this.cues_.length;
- while (i--) {
- const cue = this.cues_[i];
- if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) {
- this.cues_.splice(i, 1);
- this.cues.setCues_(this.cues_);
- break;
- }
- }
- }
- }
-
- /**
- * cuechange - One or more cues in the track have become active or stopped being active.
- * @protected
- */
- TextTrack.prototype.allowedEvents_ = {
- cuechange: 'cuechange'
- };
-
- /**
- * A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}
- * only one `AudioTrack` in the list will be enabled at a time.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}
- * @extends Track
- */
- class AudioTrack extends Track {
- /**
- * Create an instance of this class.
- *
- * @param {Object} [options={}]
- * Object of option names and values
- *
- * @param {AudioTrack~Kind} [options.kind='']
- * A valid audio track kind
- *
- * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
- * A unique id for this AudioTrack.
- *
- * @param {string} [options.label='']
- * The menu label for this track.
- *
- * @param {string} [options.language='']
- * A valid two character language code.
- *
- * @param {boolean} [options.enabled]
- * If this track is the one that is currently playing. If this track is part of
- * an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.
- */
- constructor(options = {}) {
- const settings = merge$2(options, {
- kind: AudioTrackKind[options.kind] || ''
- });
- super(settings);
- let enabled = false;
-
- /**
- * @memberof AudioTrack
- * @member {boolean} enabled
- * If this `AudioTrack` is enabled or not. When setting this will
- * fire {@link AudioTrack#enabledchange} if the state of enabled is changed.
- * @instance
- *
- * @fires VideoTrack#selectedchange
- */
- Object.defineProperty(this, 'enabled', {
- get() {
- return enabled;
- },
- set(newEnabled) {
- // an invalid or unchanged value
- if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {
- return;
- }
- enabled = newEnabled;
-
- /**
- * An event that fires when enabled changes on this track. This allows
- * the AudioTrackList that holds this track to act accordingly.
- *
- * > Note: This is not part of the spec! Native tracks will do
- * this internally without an event.
- *
- * @event AudioTrack#enabledchange
- * @type {Event}
- */
- this.trigger('enabledchange');
- }
- });
-
- // if the user sets this track to selected then
- // set selected to that true value otherwise
- // we keep it false
- if (settings.enabled) {
- this.enabled = settings.enabled;
- }
- this.loaded_ = true;
- }
- }
-
- /**
- * A representation of a single `VideoTrack`.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}
- * @extends Track
- */
- class VideoTrack extends Track {
- /**
- * Create an instance of this class.
- *
- * @param {Object} [options={}]
- * Object of option names and values
- *
- * @param {string} [options.kind='']
- * A valid {@link VideoTrack~Kind}
- *
- * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
- * A unique id for this AudioTrack.
- *
- * @param {string} [options.label='']
- * The menu label for this track.
- *
- * @param {string} [options.language='']
- * A valid two character language code.
- *
- * @param {boolean} [options.selected]
- * If this track is the one that is currently playing.
- */
- constructor(options = {}) {
- const settings = merge$2(options, {
- kind: VideoTrackKind[options.kind] || ''
- });
- super(settings);
- let selected = false;
-
- /**
- * @memberof VideoTrack
- * @member {boolean} selected
- * If this `VideoTrack` is selected or not. When setting this will
- * fire {@link VideoTrack#selectedchange} if the state of selected changed.
- * @instance
- *
- * @fires VideoTrack#selectedchange
- */
- Object.defineProperty(this, 'selected', {
- get() {
- return selected;
- },
- set(newSelected) {
- // an invalid or unchanged value
- if (typeof newSelected !== 'boolean' || newSelected === selected) {
- return;
- }
- selected = newSelected;
-
- /**
- * An event that fires when selected changes on this track. This allows
- * the VideoTrackList that holds this track to act accordingly.
- *
- * > Note: This is not part of the spec! Native tracks will do
- * this internally without an event.
- *
- * @event VideoTrack#selectedchange
- * @type {Event}
- */
- this.trigger('selectedchange');
- }
- });
-
- // if the user sets this track to selected then
- // set selected to that true value otherwise
- // we keep it false
- if (settings.selected) {
- this.selected = settings.selected;
- }
- }
- }
-
- /**
- * @file html-track-element.js
- */
-
- /**
- * A single track represented in the DOM.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}
- * @extends EventTarget
- */
- class HTMLTrackElement extends EventTarget$2 {
- /**
- * Create an instance of this class.
- *
- * @param {Object} options={}
- * Object of option names and values
- *
- * @param { import('../tech/tech').default } options.tech
- * A reference to the tech that owns this HTMLTrackElement.
- *
- * @param {TextTrack~Kind} [options.kind='subtitles']
- * A valid text track kind.
- *
- * @param {TextTrack~Mode} [options.mode='disabled']
- * A valid text track mode.
- *
- * @param {string} [options.id='vjs_track_' + Guid.newGUID()]
- * A unique id for this TextTrack.
- *
- * @param {string} [options.label='']
- * The menu label for this track.
- *
- * @param {string} [options.language='']
- * A valid two character language code.
- *
- * @param {string} [options.srclang='']
- * A valid two character language code. An alternative, but deprioritized
- * version of `options.language`
- *
- * @param {string} [options.src]
- * A url to TextTrack cues.
- *
- * @param {boolean} [options.default]
- * If this track should default to on or off.
- */
- constructor(options = {}) {
- super();
- let readyState;
- const track = new TextTrack(options);
- this.kind = track.kind;
- this.src = track.src;
- this.srclang = track.language;
- this.label = track.label;
- this.default = track.default;
- Object.defineProperties(this, {
- /**
- * @memberof HTMLTrackElement
- * @member {HTMLTrackElement~ReadyState} readyState
- * The current ready state of the track element.
- * @instance
- */
- readyState: {
- get() {
- return readyState;
- }
- },
- /**
- * @memberof HTMLTrackElement
- * @member {TextTrack} track
- * The underlying TextTrack object.
- * @instance
- *
- */
- track: {
- get() {
- return track;
- }
- }
- });
- readyState = HTMLTrackElement.NONE;
-
- /**
- * @listens TextTrack#loadeddata
- * @fires HTMLTrackElement#load
- */
- track.addEventListener('loadeddata', () => {
- readyState = HTMLTrackElement.LOADED;
- this.trigger({
- type: 'load',
- target: this
- });
- });
- }
- }
-
- /**
- * @protected
- */
- HTMLTrackElement.prototype.allowedEvents_ = {
- load: 'load'
- };
-
- /**
- * The text track not loaded state.
- *
- * @type {number}
- * @static
- */
- HTMLTrackElement.NONE = 0;
-
- /**
- * The text track loading state.
- *
- * @type {number}
- * @static
- */
- HTMLTrackElement.LOADING = 1;
-
- /**
- * The text track loaded state.
- *
- * @type {number}
- * @static
- */
- HTMLTrackElement.LOADED = 2;
-
- /**
- * The text track failed to load state.
- *
- * @type {number}
- * @static
- */
- HTMLTrackElement.ERROR = 3;
-
- /*
- * This file contains all track properties that are used in
- * player.js, tech.js, html5.js and possibly other techs in the future.
- */
-
- const NORMAL = {
- audio: {
- ListClass: AudioTrackList,
- TrackClass: AudioTrack,
- capitalName: 'Audio'
- },
- video: {
- ListClass: VideoTrackList,
- TrackClass: VideoTrack,
- capitalName: 'Video'
- },
- text: {
- ListClass: TextTrackList,
- TrackClass: TextTrack,
- capitalName: 'Text'
- }
- };
- Object.keys(NORMAL).forEach(function (type) {
- NORMAL[type].getterName = `${type}Tracks`;
- NORMAL[type].privateName = `${type}Tracks_`;
- });
- const REMOTE = {
- remoteText: {
- ListClass: TextTrackList,
- TrackClass: TextTrack,
- capitalName: 'RemoteText',
- getterName: 'remoteTextTracks',
- privateName: 'remoteTextTracks_'
- },
- remoteTextEl: {
- ListClass: HtmlTrackElementList,
- TrackClass: HTMLTrackElement,
- capitalName: 'RemoteTextTrackEls',
- getterName: 'remoteTextTrackEls',
- privateName: 'remoteTextTrackEls_'
- }
- };
- const ALL = Object.assign({}, NORMAL, REMOTE);
- REMOTE.names = Object.keys(REMOTE);
- NORMAL.names = Object.keys(NORMAL);
- ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);
-
- var vtt = {};
-
- /**
- * @file tech.js
- */
-
- /**
- * An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string
- * that just contains the src url alone.
- * * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`
- * `var SourceString = 'http://example.com/some-video.mp4';`
- *
- * @typedef {Object|string} SourceObject
- *
- * @property {string} src
- * The url to the source
- *
- * @property {string} type
- * The mime type of the source
- */
-
- /**
- * A function used by {@link Tech} to create a new {@link TextTrack}.
- *
- * @private
- *
- * @param {Tech} self
- * An instance of the Tech class.
- *
- * @param {string} kind
- * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
- *
- * @param {string} [label]
- * Label to identify the text track
- *
- * @param {string} [language]
- * Two letter language abbreviation
- *
- * @param {Object} [options={}]
- * An object with additional text track options
- *
- * @return {TextTrack}
- * The text track that was created.
- */
- function createTrackHelper(self, kind, label, language, options = {}) {
- const tracks = self.textTracks();
- options.kind = kind;
- if (label) {
- options.label = label;
- }
- if (language) {
- options.language = language;
- }
- options.tech = self;
- const track = new ALL.text.TrackClass(options);
- tracks.addTrack(track);
- return track;
- }
-
- /**
- * This is the base class for media playback technology controllers, such as
- * {@link HTML5}
- *
- * @extends Component
- */
- class Tech extends Component$1 {
- /**
- * Create an instance of this Tech.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * Callback function to call when the `HTML5` Tech is ready.
- */
- constructor(options = {}, ready = function () {}) {
- // we don't want the tech to report user activity automatically.
- // This is done manually in addControlsListeners
- options.reportTouchActivity = false;
- super(null, options, ready);
- this.onDurationChange_ = e => this.onDurationChange(e);
- this.trackProgress_ = e => this.trackProgress(e);
- this.trackCurrentTime_ = e => this.trackCurrentTime(e);
- this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e);
- this.disposeSourceHandler_ = e => this.disposeSourceHandler(e);
- this.queuedHanders_ = new Set();
-
- // keep track of whether the current source has played at all to
- // implement a very limited played()
- this.hasStarted_ = false;
- this.on('playing', function () {
- this.hasStarted_ = true;
- });
- this.on('loadstart', function () {
- this.hasStarted_ = false;
- });
- ALL.names.forEach(name => {
- const props = ALL[name];
- if (options && options[props.getterName]) {
- this[props.privateName] = options[props.getterName];
- }
- });
-
- // Manually track progress in cases where the browser/tech doesn't report it.
- if (!this.featuresProgressEvents) {
- this.manualProgressOn();
- }
-
- // Manually track timeupdates in cases where the browser/tech doesn't report it.
- if (!this.featuresTimeupdateEvents) {
- this.manualTimeUpdatesOn();
- }
- ['Text', 'Audio', 'Video'].forEach(track => {
- if (options[`native${track}Tracks`] === false) {
- this[`featuresNative${track}Tracks`] = false;
- }
- });
- if (options.nativeCaptions === false || options.nativeTextTracks === false) {
- this.featuresNativeTextTracks = false;
- } else if (options.nativeCaptions === true || options.nativeTextTracks === true) {
- this.featuresNativeTextTracks = true;
- }
- if (!this.featuresNativeTextTracks) {
- this.emulateTextTracks();
- }
- this.preloadTextTracks = options.preloadTextTracks !== false;
- this.autoRemoteTextTracks_ = new ALL.text.ListClass();
- this.initTrackListeners();
-
- // Turn on component tap events only if not using native controls
- if (!options.nativeControlsForTouch) {
- this.emitTapEvents();
- }
- if (this.constructor) {
- this.name_ = this.constructor.name || 'Unknown Tech';
- }
- }
-
- /**
- * A special function to trigger source set in a way that will allow player
- * to re-trigger if the player or tech are not ready yet.
- *
- * @fires Tech#sourceset
- * @param {string} src The source string at the time of the source changing.
- */
- triggerSourceset(src) {
- if (!this.isReady_) {
- // on initial ready we have to trigger source set
- // 1ms after ready so that player can watch for it.
- this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1));
- }
-
- /**
- * Fired when the source is set on the tech causing the media element
- * to reload.
- *
- * @see {@link Player#event:sourceset}
- * @event Tech#sourceset
- * @type {Event}
- */
- this.trigger({
- src,
- type: 'sourceset'
- });
- }
-
- /* Fallbacks for unsupported event types
- ================================================================================ */
-
- /**
- * Polyfill the `progress` event for browsers that don't support it natively.
- *
- * @see {@link Tech#trackProgress}
- */
- manualProgressOn() {
- this.on('durationchange', this.onDurationChange_);
- this.manualProgress = true;
-
- // Trigger progress watching when a source begins loading
- this.one('ready', this.trackProgress_);
- }
-
- /**
- * Turn off the polyfill for `progress` events that was created in
- * {@link Tech#manualProgressOn}
- */
- manualProgressOff() {
- this.manualProgress = false;
- this.stopTrackingProgress();
- this.off('durationchange', this.onDurationChange_);
- }
-
- /**
- * This is used to trigger a `progress` event when the buffered percent changes. It
- * sets an interval function that will be called every 500 milliseconds to check if the
- * buffer end percent has changed.
- *
- * > This function is called by {@link Tech#manualProgressOn}
- *
- * @param {Event} event
- * The `ready` event that caused this to run.
- *
- * @listens Tech#ready
- * @fires Tech#progress
- */
- trackProgress(event) {
- this.stopTrackingProgress();
- this.progressInterval = this.setInterval(bind_(this, function () {
- // Don't trigger unless buffered amount is greater than last time
-
- const numBufferedPercent = this.bufferedPercent();
- if (this.bufferedPercent_ !== numBufferedPercent) {
- /**
- * See {@link Player#progress}
- *
- * @event Tech#progress
- * @type {Event}
- */
- this.trigger('progress');
- }
- this.bufferedPercent_ = numBufferedPercent;
- if (numBufferedPercent === 1) {
- this.stopTrackingProgress();
- }
- }), 500);
- }
-
- /**
- * Update our internal duration on a `durationchange` event by calling
- * {@link Tech#duration}.
- *
- * @param {Event} event
- * The `durationchange` event that caused this to run.
- *
- * @listens Tech#durationchange
- */
- onDurationChange(event) {
- this.duration_ = this.duration();
- }
-
- /**
- * Get and create a `TimeRange` object for buffering.
- *
- * @return { import('../utils/time').TimeRange }
- * The time range object that was created.
- */
- buffered() {
- return createTimeRanges$1(0, 0);
- }
-
- /**
- * Get the percentage of the current video that is currently buffered.
- *
- * @return {number}
- * A number from 0 to 1 that represents the decimal percentage of the
- * video that is buffered.
- *
- */
- bufferedPercent() {
- return bufferedPercent(this.buffered(), this.duration_);
- }
-
- /**
- * Turn off the polyfill for `progress` events that was created in
- * {@link Tech#manualProgressOn}
- * Stop manually tracking progress events by clearing the interval that was set in
- * {@link Tech#trackProgress}.
- */
- stopTrackingProgress() {
- this.clearInterval(this.progressInterval);
- }
-
- /**
- * Polyfill the `timeupdate` event for browsers that don't support it.
- *
- * @see {@link Tech#trackCurrentTime}
- */
- manualTimeUpdatesOn() {
- this.manualTimeUpdates = true;
- this.on('play', this.trackCurrentTime_);
- this.on('pause', this.stopTrackingCurrentTime_);
- }
-
- /**
- * Turn off the polyfill for `timeupdate` events that was created in
- * {@link Tech#manualTimeUpdatesOn}
- */
- manualTimeUpdatesOff() {
- this.manualTimeUpdates = false;
- this.stopTrackingCurrentTime();
- this.off('play', this.trackCurrentTime_);
- this.off('pause', this.stopTrackingCurrentTime_);
- }
-
- /**
- * Sets up an interval function to track current time and trigger `timeupdate` every
- * 250 milliseconds.
- *
- * @listens Tech#play
- * @triggers Tech#timeupdate
- */
- trackCurrentTime() {
- if (this.currentTimeInterval) {
- this.stopTrackingCurrentTime();
- }
- this.currentTimeInterval = this.setInterval(function () {
- /**
- * Triggered at an interval of 250ms to indicated that time is passing in the video.
- *
- * @event Tech#timeupdate
- * @type {Event}
- */
- this.trigger({
- type: 'timeupdate',
- target: this,
- manuallyTriggered: true
- });
-
- // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
- }, 250);
- }
-
- /**
- * Stop the interval function created in {@link Tech#trackCurrentTime} so that the
- * `timeupdate` event is no longer triggered.
- *
- * @listens {Tech#pause}
- */
- stopTrackingCurrentTime() {
- this.clearInterval(this.currentTimeInterval);
-
- // #1002 - if the video ends right before the next timeupdate would happen,
- // the progress bar won't make it all the way to the end
- this.trigger({
- type: 'timeupdate',
- target: this,
- manuallyTriggered: true
- });
- }
-
- /**
- * Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},
- * {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.
- *
- * @fires Component#dispose
- */
- dispose() {
- // clear out all tracks because we can't reuse them between techs
- this.clearTracks(NORMAL.names);
-
- // Turn off any manual progress or timeupdate tracking
- if (this.manualProgress) {
- this.manualProgressOff();
- }
- if (this.manualTimeUpdates) {
- this.manualTimeUpdatesOff();
- }
- super.dispose();
- }
-
- /**
- * Clear out a single `TrackList` or an array of `TrackLists` given their names.
- *
- * > Note: Techs without source handlers should call this between sources for `video`
- * & `audio` tracks. You don't want to use them between tracks!
- *
- * @param {string[]|string} types
- * TrackList names to clear, valid names are `video`, `audio`, and
- * `text`.
- */
- clearTracks(types) {
- types = [].concat(types);
- // clear out all tracks because we can't reuse them between techs
- types.forEach(type => {
- const list = this[`${type}Tracks`]() || [];
- let i = list.length;
- while (i--) {
- const track = list[i];
- if (type === 'text') {
- this.removeRemoteTextTrack(track);
- }
- list.removeTrack(track);
- }
- });
- }
-
- /**
- * Remove any TextTracks added via addRemoteTextTrack that are
- * flagged for automatic garbage collection
- */
- cleanupAutoTextTracks() {
- const list = this.autoRemoteTextTracks_ || [];
- let i = list.length;
- while (i--) {
- const track = list[i];
- this.removeRemoteTextTrack(track);
- }
- }
-
- /**
- * Reset the tech, which will removes all sources and reset the internal readyState.
- *
- * @abstract
- */
- reset() {}
-
- /**
- * Get the value of `crossOrigin` from the tech.
- *
- * @abstract
- *
- * @see {Html5#crossOrigin}
- */
- crossOrigin() {}
-
- /**
- * Set the value of `crossOrigin` on the tech.
- *
- * @abstract
- *
- * @param {string} crossOrigin the crossOrigin value
- * @see {Html5#setCrossOrigin}
- */
- setCrossOrigin() {}
-
- /**
- * Get or set an error on the Tech.
- *
- * @param {MediaError} [err]
- * Error to set on the Tech
- *
- * @return {MediaError|null}
- * The current error object on the tech, or null if there isn't one.
- */
- error(err) {
- if (err !== undefined) {
- this.error_ = new MediaError(err);
- this.trigger('error');
- }
- return this.error_;
- }
-
- /**
- * Returns the `TimeRange`s that have been played through for the current source.
- *
- * > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.
- * It only checks whether the source has played at all or not.
- *
- * @return { import('../utils/time').TimeRange }
- * - A single time range if this video has played
- * - An empty set of ranges if not.
- */
- played() {
- if (this.hasStarted_) {
- return createTimeRanges$1(0, 0);
- }
- return createTimeRanges$1();
- }
-
- /**
- * Start playback
- *
- * @abstract
- *
- * @see {Html5#play}
- */
- play() {}
-
- /**
- * Set whether we are scrubbing or not
- *
- * @abstract
- * @param {boolean} _isScrubbing
- * - true for we are currently scrubbing
- * - false for we are no longer scrubbing
- *
- * @see {Html5#setScrubbing}
- */
- setScrubbing(_isScrubbing) {}
-
- /**
- * Get whether we are scrubbing or not
- *
- * @abstract
- *
- * @see {Html5#scrubbing}
- */
- scrubbing() {}
-
- /**
- * Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was
- * previously called.
- *
- * @param {number} _seconds
- * Set the current time of the media to this.
- * @fires Tech#timeupdate
- */
- setCurrentTime(_seconds) {
- // improve the accuracy of manual timeupdates
- if (this.manualTimeUpdates) {
- /**
- * A manual `timeupdate` event.
- *
- * @event Tech#timeupdate
- * @type {Event}
- */
- this.trigger({
- type: 'timeupdate',
- target: this,
- manuallyTriggered: true
- });
- }
- }
-
- /**
- * Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and
- * {@link TextTrackList} events.
- *
- * This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`.
- *
- * @fires Tech#audiotrackchange
- * @fires Tech#videotrackchange
- * @fires Tech#texttrackchange
- */
- initTrackListeners() {
- /**
- * Triggered when tracks are added or removed on the Tech {@link AudioTrackList}
- *
- * @event Tech#audiotrackchange
- * @type {Event}
- */
-
- /**
- * Triggered when tracks are added or removed on the Tech {@link VideoTrackList}
- *
- * @event Tech#videotrackchange
- * @type {Event}
- */
-
- /**
- * Triggered when tracks are added or removed on the Tech {@link TextTrackList}
- *
- * @event Tech#texttrackchange
- * @type {Event}
- */
- NORMAL.names.forEach(name => {
- const props = NORMAL[name];
- const trackListChanges = () => {
- this.trigger(`${name}trackchange`);
- };
- const tracks = this[props.getterName]();
- tracks.addEventListener('removetrack', trackListChanges);
- tracks.addEventListener('addtrack', trackListChanges);
- this.on('dispose', () => {
- tracks.removeEventListener('removetrack', trackListChanges);
- tracks.removeEventListener('addtrack', trackListChanges);
- });
- });
- }
-
- /**
- * Emulate TextTracks using vtt.js if necessary
- *
- * @fires Tech#vttjsloaded
- * @fires Tech#vttjserror
- */
- addWebVttScript_() {
- if (window.WebVTT) {
- return;
- }
-
- // Initially, Tech.el_ is a child of a dummy-div wait until the Component system
- // signals that the Tech is ready at which point Tech.el_ is part of the DOM
- // before inserting the WebVTT script
- if (document.body.contains(this.el())) {
- // load via require if available and vtt.js script location was not passed in
- // as an option. novtt builds will turn the above require call into an empty object
- // which will cause this if check to always fail.
- if (!this.options_['vtt.js'] && isPlain(vtt) && Object.keys(vtt).length > 0) {
- this.trigger('vttjsloaded');
- return;
- }
-
- // load vtt.js via the script location option or the cdn of no location was
- // passed in
- const script = document.createElement('script');
- script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';
- script.onload = () => {
- /**
- * Fired when vtt.js is loaded.
- *
- * @event Tech#vttjsloaded
- * @type {Event}
- */
- this.trigger('vttjsloaded');
- };
- script.onerror = () => {
- /**
- * Fired when vtt.js was not loaded due to an error
- *
- * @event Tech#vttjsloaded
- * @type {Event}
- */
- this.trigger('vttjserror');
- };
- this.on('dispose', () => {
- script.onload = null;
- script.onerror = null;
- });
- // but have not loaded yet and we set it to true before the inject so that
- // we don't overwrite the injected window.WebVTT if it loads right away
- window.WebVTT = true;
- this.el().parentNode.appendChild(script);
- } else {
- this.ready(this.addWebVttScript_);
- }
- }
-
- /**
- * Emulate texttracks
- *
- */
- emulateTextTracks() {
- const tracks = this.textTracks();
- const remoteTracks = this.remoteTextTracks();
- const handleAddTrack = e => tracks.addTrack(e.track);
- const handleRemoveTrack = e => tracks.removeTrack(e.track);
- remoteTracks.on('addtrack', handleAddTrack);
- remoteTracks.on('removetrack', handleRemoveTrack);
- this.addWebVttScript_();
- const updateDisplay = () => this.trigger('texttrackchange');
- const textTracksChanges = () => {
- updateDisplay();
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
- track.removeEventListener('cuechange', updateDisplay);
- if (track.mode === 'showing') {
- track.addEventListener('cuechange', updateDisplay);
- }
- }
- };
- textTracksChanges();
- tracks.addEventListener('change', textTracksChanges);
- tracks.addEventListener('addtrack', textTracksChanges);
- tracks.addEventListener('removetrack', textTracksChanges);
- this.on('dispose', function () {
- remoteTracks.off('addtrack', handleAddTrack);
- remoteTracks.off('removetrack', handleRemoveTrack);
- tracks.removeEventListener('change', textTracksChanges);
- tracks.removeEventListener('addtrack', textTracksChanges);
- tracks.removeEventListener('removetrack', textTracksChanges);
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
- track.removeEventListener('cuechange', updateDisplay);
- }
- });
- }
-
- /**
- * Create and returns a remote {@link TextTrack} object.
- *
- * @param {string} kind
- * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
- *
- * @param {string} [label]
- * Label to identify the text track
- *
- * @param {string} [language]
- * Two letter language abbreviation
- *
- * @return {TextTrack}
- * The TextTrack that gets created.
- */
- addTextTrack(kind, label, language) {
- if (!kind) {
- throw new Error('TextTrack kind is required but was not provided');
- }
- return createTrackHelper(this, kind, label, language);
- }
-
- /**
- * Create an emulated TextTrack for use by addRemoteTextTrack
- *
- * This is intended to be overridden by classes that inherit from
- * Tech in order to create native or custom TextTracks.
- *
- * @param {Object} options
- * The object should contain the options to initialize the TextTrack with.
- *
- * @param {string} [options.kind]
- * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
- *
- * @param {string} [options.label].
- * Label to identify the text track
- *
- * @param {string} [options.language]
- * Two letter language abbreviation.
- *
- * @return {HTMLTrackElement}
- * The track element that gets created.
- */
- createRemoteTextTrack(options) {
- const track = merge$2(options, {
- tech: this
- });
- return new REMOTE.remoteTextEl.TrackClass(track);
- }
-
- /**
- * Creates a remote text track object and returns an html track element.
- *
- * > Note: This can be an emulated {@link HTMLTrackElement} or a native one.
- *
- * @param {Object} options
- * See {@link Tech#createRemoteTextTrack} for more detailed properties.
- *
- * @param {boolean} [manualCleanup=false]
- * - When false: the TextTrack will be automatically removed from the video
- * element whenever the source changes
- * - When True: The TextTrack will have to be cleaned up manually
- *
- * @return {HTMLTrackElement}
- * An Html Track Element.
- *
- */
- addRemoteTextTrack(options = {}, manualCleanup) {
- const htmlTrackElement = this.createRemoteTextTrack(options);
- if (typeof manualCleanup !== 'boolean') {
- manualCleanup = false;
- }
-
- // store HTMLTrackElement and TextTrack to remote list
- this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);
- this.remoteTextTracks().addTrack(htmlTrackElement.track);
- if (manualCleanup === false) {
- // create the TextTrackList if it doesn't exist
- this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track));
- }
- return htmlTrackElement;
- }
-
- /**
- * Remove a remote text track from the remote `TextTrackList`.
- *
- * @param {TextTrack} track
- * `TextTrack` to remove from the `TextTrackList`
- */
- removeRemoteTextTrack(track) {
- const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);
-
- // remove HTMLTrackElement and TextTrack from remote list
- this.remoteTextTrackEls().removeTrackElement_(trackElement);
- this.remoteTextTracks().removeTrack(track);
- this.autoRemoteTextTracks_.removeTrack(track);
- }
-
- /**
- * Gets available media playback quality metrics as specified by the W3C's Media
- * Playback Quality API.
- *
- * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
- *
- * @return {Object}
- * An object with supported media playback quality metrics
- *
- * @abstract
- */
- getVideoPlaybackQuality() {
- return {};
- }
-
- /**
- * Attempt to create a floating video window always on top of other windows
- * so that users may continue consuming media while they interact with other
- * content sites, or applications on their device.
- *
- * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
- *
- * @return {Promise|undefined}
- * A promise with a Picture-in-Picture window if the browser supports
- * Promises (or one was passed in as an option). It returns undefined
- * otherwise.
- *
- * @abstract
- */
- requestPictureInPicture() {
- return Promise.reject();
- }
-
- /**
- * A method to check for the value of the 'disablePictureInPicture' <video> property.
- * Defaults to true, as it should be considered disabled if the tech does not support pip
- *
- * @abstract
- */
- disablePictureInPicture() {
- return true;
- }
-
- /**
- * A method to set or unset the 'disablePictureInPicture' <video> property.
- *
- * @abstract
- */
- setDisablePictureInPicture() {}
-
- /**
- * A fallback implementation of requestVideoFrameCallback using requestAnimationFrame
- *
- * @param {function} cb
- * @return {number} request id
- */
- requestVideoFrameCallback(cb) {
- const id = newGUID();
- if (!this.isReady_ || this.paused()) {
- this.queuedHanders_.add(id);
- this.one('playing', () => {
- if (this.queuedHanders_.has(id)) {
- this.queuedHanders_.delete(id);
- cb();
- }
- });
- } else {
- this.requestNamedAnimationFrame(id, cb);
- }
- return id;
- }
-
- /**
- * A fallback implementation of cancelVideoFrameCallback
- *
- * @param {number} id id of callback to be cancelled
- */
- cancelVideoFrameCallback(id) {
- if (this.queuedHanders_.has(id)) {
- this.queuedHanders_.delete(id);
- } else {
- this.cancelNamedAnimationFrame(id);
- }
- }
-
- /**
- * A method to set a poster from a `Tech`.
- *
- * @abstract
- */
- setPoster() {}
-
- /**
- * A method to check for the presence of the 'playsinline' <video> attribute.
- *
- * @abstract
- */
- playsinline() {}
-
- /**
- * A method to set or unset the 'playsinline' <video> attribute.
- *
- * @abstract
- */
- setPlaysinline() {}
-
- /**
- * Attempt to force override of native audio tracks.
- *
- * @param {boolean} override - If set to true native audio will be overridden,
- * otherwise native audio will potentially be used.
- *
- * @abstract
- */
- overrideNativeAudioTracks(override) {}
-
- /**
- * Attempt to force override of native video tracks.
- *
- * @param {boolean} override - If set to true native video will be overridden,
- * otherwise native video will potentially be used.
- *
- * @abstract
- */
- overrideNativeVideoTracks(override) {}
-
- /**
- * Check if the tech can support the given mime-type.
- *
- * The base tech does not support any type, but source handlers might
- * overwrite this.
- *
- * @param {string} _type
- * The mimetype to check for support
- *
- * @return {string}
- * 'probably', 'maybe', or empty string
- *
- * @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}
- *
- * @abstract
- */
- canPlayType(_type) {
- return '';
- }
-
- /**
- * Check if the type is supported by this tech.
- *
- * The base tech does not support any type, but source handlers might
- * overwrite this.
- *
- * @param {string} _type
- * The media type to check
- * @return {string} Returns the native video element's response
- */
- static canPlayType(_type) {
- return '';
- }
-
- /**
- * Check if the tech can support the given source
- *
- * @param {Object} srcObj
- * The source object
- * @param {Object} options
- * The options passed to the tech
- * @return {string} 'probably', 'maybe', or '' (empty string)
- */
- static canPlaySource(srcObj, options) {
- return Tech.canPlayType(srcObj.type);
- }
-
- /*
- * Return whether the argument is a Tech or not.
- * Can be passed either a Class like `Html5` or a instance like `player.tech_`
- *
- * @param {Object} component
- * The item to check
- *
- * @return {boolean}
- * Whether it is a tech or not
- * - True if it is a tech
- * - False if it is not
- */
- static isTech(component) {
- return component.prototype instanceof Tech || component instanceof Tech || component === Tech;
- }
-
- /**
- * Registers a `Tech` into a shared list for videojs.
- *
- * @param {string} name
- * Name of the `Tech` to register.
- *
- * @param {Object} tech
- * The `Tech` class to register.
- */
- static registerTech(name, tech) {
- if (!Tech.techs_) {
- Tech.techs_ = {};
- }
- if (!Tech.isTech(tech)) {
- throw new Error(`Tech ${name} must be a Tech`);
- }
- if (!Tech.canPlayType) {
- throw new Error('Techs must have a static canPlayType method on them');
- }
- if (!Tech.canPlaySource) {
- throw new Error('Techs must have a static canPlaySource method on them');
- }
- name = toTitleCase$1(name);
- Tech.techs_[name] = tech;
- Tech.techs_[toLowerCase(name)] = tech;
- if (name !== 'Tech') {
- // camel case the techName for use in techOrder
- Tech.defaultTechOrder_.push(name);
- }
- return tech;
- }
-
- /**
- * Get a `Tech` from the shared list by name.
- *
- * @param {string} name
- * `camelCase` or `TitleCase` name of the Tech to get
- *
- * @return {Tech|undefined}
- * The `Tech` or undefined if there was no tech with the name requested.
- */
- static getTech(name) {
- if (!name) {
- return;
- }
- if (Tech.techs_ && Tech.techs_[name]) {
- return Tech.techs_[name];
- }
- name = toTitleCase$1(name);
- if (window && window.videojs && window.videojs[name]) {
- log$1.warn(`The ${name} tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)`);
- return window.videojs[name];
- }
- }
- }
-
- /**
- * Get the {@link VideoTrackList}
- *
- * @returns {VideoTrackList}
- * @method Tech.prototype.videoTracks
- */
-
- /**
- * Get the {@link AudioTrackList}
- *
- * @returns {AudioTrackList}
- * @method Tech.prototype.audioTracks
- */
-
- /**
- * Get the {@link TextTrackList}
- *
- * @returns {TextTrackList}
- * @method Tech.prototype.textTracks
- */
-
- /**
- * Get the remote element {@link TextTrackList}
- *
- * @returns {TextTrackList}
- * @method Tech.prototype.remoteTextTracks
- */
-
- /**
- * Get the remote element {@link HtmlTrackElementList}
- *
- * @returns {HtmlTrackElementList}
- * @method Tech.prototype.remoteTextTrackEls
- */
-
- ALL.names.forEach(function (name) {
- const props = ALL[name];
- Tech.prototype[props.getterName] = function () {
- this[props.privateName] = this[props.privateName] || new props.ListClass();
- return this[props.privateName];
- };
- });
-
- /**
- * List of associated text tracks
- *
- * @type {TextTrackList}
- * @private
- * @property Tech#textTracks_
- */
-
- /**
- * List of associated audio tracks.
- *
- * @type {AudioTrackList}
- * @private
- * @property Tech#audioTracks_
- */
-
- /**
- * List of associated video tracks.
- *
- * @type {VideoTrackList}
- * @private
- * @property Tech#videoTracks_
- */
-
- /**
- * Boolean indicating whether the `Tech` supports volume control.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresVolumeControl = true;
-
- /**
- * Boolean indicating whether the `Tech` supports muting volume.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresMuteControl = true;
-
- /**
- * Boolean indicating whether the `Tech` supports fullscreen resize control.
- * Resizing plugins using request fullscreen reloads the plugin
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresFullscreenResize = false;
-
- /**
- * Boolean indicating whether the `Tech` supports changing the speed at which the video
- * plays. Examples:
- * - Set player to play 2x (twice) as fast
- * - Set player to play 0.5x (half) as fast
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresPlaybackRate = false;
-
- /**
- * Boolean indicating whether the `Tech` supports the `progress` event.
- * This will be used to determine if {@link Tech#manualProgressOn} should be called.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresProgressEvents = false;
-
- /**
- * Boolean indicating whether the `Tech` supports the `sourceset` event.
- *
- * A tech should set this to `true` and then use {@link Tech#triggerSourceset}
- * to trigger a {@link Tech#event:sourceset} at the earliest time after getting
- * a new source.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresSourceset = false;
-
- /**
- * Boolean indicating whether the `Tech` supports the `timeupdate` event.
- * This will be used to determine if {@link Tech#manualTimeUpdates} should be called.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresTimeupdateEvents = false;
-
- /**
- * Boolean indicating whether the `Tech` supports the native `TextTrack`s.
- * This will help us integrate with native `TextTrack`s if the browser supports them.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresNativeTextTracks = false;
-
- /**
- * Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.
- *
- * @type {boolean}
- * @default
- */
- Tech.prototype.featuresVideoFrameCallback = false;
-
- /**
- * A functional mixin for techs that want to use the Source Handler pattern.
- * Source handlers are scripts for handling specific formats.
- * The source handler pattern is used for adaptive formats (HLS, DASH) that
- * manually load video data and feed it into a Source Buffer (Media Source Extensions)
- * Example: `Tech.withSourceHandlers.call(MyTech);`
- *
- * @param {Tech} _Tech
- * The tech to add source handler functions to.
- *
- * @mixes Tech~SourceHandlerAdditions
- */
- Tech.withSourceHandlers = function (_Tech) {
- /**
- * Register a source handler
- *
- * @param {Function} handler
- * The source handler class
- *
- * @param {number} [index]
- * Register it at the following index
- */
- _Tech.registerSourceHandler = function (handler, index) {
- let handlers = _Tech.sourceHandlers;
- if (!handlers) {
- handlers = _Tech.sourceHandlers = [];
- }
- if (index === undefined) {
- // add to the end of the list
- index = handlers.length;
- }
- handlers.splice(index, 0, handler);
- };
-
- /**
- * Check if the tech can support the given type. Also checks the
- * Techs sourceHandlers.
- *
- * @param {string} type
- * The mimetype to check.
- *
- * @return {string}
- * 'probably', 'maybe', or '' (empty string)
- */
- _Tech.canPlayType = function (type) {
- const handlers = _Tech.sourceHandlers || [];
- let can;
- for (let i = 0; i < handlers.length; i++) {
- can = handlers[i].canPlayType(type);
- if (can) {
- return can;
- }
- }
- return '';
- };
-
- /**
- * Returns the first source handler that supports the source.
- *
- * TODO: Answer question: should 'probably' be prioritized over 'maybe'
- *
- * @param {SourceObject} source
- * The source object
- *
- * @param {Object} options
- * The options passed to the tech
- *
- * @return {SourceHandler|null}
- * The first source handler that supports the source or null if
- * no SourceHandler supports the source
- */
- _Tech.selectSourceHandler = function (source, options) {
- const handlers = _Tech.sourceHandlers || [];
- let can;
- for (let i = 0; i < handlers.length; i++) {
- can = handlers[i].canHandleSource(source, options);
- if (can) {
- return handlers[i];
- }
- }
- return null;
- };
-
- /**
- * Check if the tech can support the given source.
- *
- * @param {SourceObject} srcObj
- * The source object
- *
- * @param {Object} options
- * The options passed to the tech
- *
- * @return {string}
- * 'probably', 'maybe', or '' (empty string)
- */
- _Tech.canPlaySource = function (srcObj, options) {
- const sh = _Tech.selectSourceHandler(srcObj, options);
- if (sh) {
- return sh.canHandleSource(srcObj, options);
- }
- return '';
- };
-
- /**
- * When using a source handler, prefer its implementation of
- * any function normally provided by the tech.
- */
- const deferrable = ['seekable', 'seeking', 'duration'];
-
- /**
- * A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable
- * function if it exists, with a fallback to the Techs seekable function.
- *
- * @method _Tech.seekable
- */
-
- /**
- * A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration
- * function if it exists, otherwise it will fallback to the techs duration function.
- *
- * @method _Tech.duration
- */
-
- deferrable.forEach(function (fnName) {
- const originalFn = this[fnName];
- if (typeof originalFn !== 'function') {
- return;
- }
- this[fnName] = function () {
- if (this.sourceHandler_ && this.sourceHandler_[fnName]) {
- return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);
- }
- return originalFn.apply(this, arguments);
- };
- }, _Tech.prototype);
-
- /**
- * Create a function for setting the source using a source object
- * and source handlers.
- * Should never be called unless a source handler was found.
- *
- * @param {SourceObject} source
- * A source object with src and type keys
- */
- _Tech.prototype.setSource = function (source) {
- let sh = _Tech.selectSourceHandler(source, this.options_);
- if (!sh) {
- // Fall back to a native source handler when unsupported sources are
- // deliberately set
- if (_Tech.nativeSourceHandler) {
- sh = _Tech.nativeSourceHandler;
- } else {
- log$1.error('No source handler found for the current source.');
- }
- }
-
- // Dispose any existing source handler
- this.disposeSourceHandler();
- this.off('dispose', this.disposeSourceHandler_);
- if (sh !== _Tech.nativeSourceHandler) {
- this.currentSource_ = source;
- }
- this.sourceHandler_ = sh.handleSource(source, this, this.options_);
- this.one('dispose', this.disposeSourceHandler_);
- };
-
- /**
- * Clean up any existing SourceHandlers and listeners when the Tech is disposed.
- *
- * @listens Tech#dispose
- */
- _Tech.prototype.disposeSourceHandler = function () {
- // if we have a source and get another one
- // then we are loading something new
- // than clear all of our current tracks
- if (this.currentSource_) {
- this.clearTracks(['audio', 'video']);
- this.currentSource_ = null;
- }
-
- // always clean up auto-text tracks
- this.cleanupAutoTextTracks();
- if (this.sourceHandler_) {
- if (this.sourceHandler_.dispose) {
- this.sourceHandler_.dispose();
- }
- this.sourceHandler_ = null;
- }
- };
- };
-
- // The base Tech class needs to be registered as a Component. It is the only
- // Tech that can be registered as a Component.
- Component$1.registerComponent('Tech', Tech);
- Tech.registerTech('Tech', Tech);
-
- /**
- * A list of techs that should be added to techOrder on Players
- *
- * @private
- */
- Tech.defaultTechOrder_ = [];
-
- /**
- * @file middleware.js
- * @module middleware
- */
- const middlewares = {};
- const middlewareInstances = {};
- const TERMINATOR = {};
-
- /**
- * A middleware object is a plain JavaScript object that has methods that
- * match the {@link Tech} methods found in the lists of allowed
- * {@link module:middleware.allowedGetters|getters},
- * {@link module:middleware.allowedSetters|setters}, and
- * {@link module:middleware.allowedMediators|mediators}.
- *
- * @typedef {Object} MiddlewareObject
- */
-
- /**
- * A middleware factory function that should return a
- * {@link module:middleware~MiddlewareObject|MiddlewareObject}.
- *
- * This factory will be called for each player when needed, with the player
- * passed in as an argument.
- *
- * @callback MiddlewareFactory
- * @param { import('../player').default } player
- * A Video.js player.
- */
-
- /**
- * Define a middleware that the player should use by way of a factory function
- * that returns a middleware object.
- *
- * @param {string} type
- * The MIME type to match or `"*"` for all MIME types.
- *
- * @param {MiddlewareFactory} middleware
- * A middleware factory function that will be executed for
- * matching types.
- */
- function use(type, middleware) {
- middlewares[type] = middlewares[type] || [];
- middlewares[type].push(middleware);
- }
-
- /**
- * Asynchronously sets a source using middleware by recursing through any
- * matching middlewares and calling `setSource` on each, passing along the
- * previous returned value each time.
- *
- * @param { import('../player').default } player
- * A {@link Player} instance.
- *
- * @param {Tech~SourceObject} src
- * A source object.
- *
- * @param {Function}
- * The next middleware to run.
- */
- function setSource(player, src, next) {
- player.setTimeout(() => setSourceHelper(src, middlewares[src.type], next, player), 1);
- }
-
- /**
- * When the tech is set, passes the tech to each middleware's `setTech` method.
- *
- * @param {Object[]} middleware
- * An array of middleware instances.
- *
- * @param { import('../tech/tech').default } tech
- * A Video.js tech.
- */
- function setTech(middleware, tech) {
- middleware.forEach(mw => mw.setTech && mw.setTech(tech));
- }
-
- /**
- * Calls a getter on the tech first, through each middleware
- * from right to left to the player.
- *
- * @param {Object[]} middleware
- * An array of middleware instances.
- *
- * @param { import('../tech/tech').default } tech
- * The current tech.
- *
- * @param {string} method
- * A method name.
- *
- * @return {*}
- * The final value from the tech after middleware has intercepted it.
- */
- function get(middleware, tech, method) {
- return middleware.reduceRight(middlewareIterator(method), tech[method]());
- }
-
- /**
- * Takes the argument given to the player and calls the setter method on each
- * middleware from left to right to the tech.
- *
- * @param {Object[]} middleware
- * An array of middleware instances.
- *
- * @param { import('../tech/tech').default } tech
- * The current tech.
- *
- * @param {string} method
- * A method name.
- *
- * @param {*} arg
- * The value to set on the tech.
- *
- * @return {*}
- * The return value of the `method` of the `tech`.
- */
- function set(middleware, tech, method, arg) {
- return tech[method](middleware.reduce(middlewareIterator(method), arg));
- }
-
- /**
- * Takes the argument given to the player and calls the `call` version of the
- * method on each middleware from left to right.
- *
- * Then, call the passed in method on the tech and return the result unchanged
- * back to the player, through middleware, this time from right to left.
- *
- * @param {Object[]} middleware
- * An array of middleware instances.
- *
- * @param { import('../tech/tech').default } tech
- * The current tech.
- *
- * @param {string} method
- * A method name.
- *
- * @param {*} arg
- * The value to set on the tech.
- *
- * @return {*}
- * The return value of the `method` of the `tech`, regardless of the
- * return values of middlewares.
- */
- function mediate(middleware, tech, method, arg = null) {
- const callMethod = 'call' + toTitleCase$1(method);
- const middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);
- const terminated = middlewareValue === TERMINATOR;
- // deprecated. The `null` return value should instead return TERMINATOR to
- // prevent confusion if a techs method actually returns null.
- const returnValue = terminated ? null : tech[method](middlewareValue);
- executeRight(middleware, method, returnValue, terminated);
- return returnValue;
- }
-
- /**
- * Enumeration of allowed getters where the keys are method names.
- *
- * @type {Object}
- */
- const allowedGetters = {
- buffered: 1,
- currentTime: 1,
- duration: 1,
- muted: 1,
- played: 1,
- paused: 1,
- seekable: 1,
- volume: 1,
- ended: 1
- };
-
- /**
- * Enumeration of allowed setters where the keys are method names.
- *
- * @type {Object}
- */
- const allowedSetters = {
- setCurrentTime: 1,
- setMuted: 1,
- setVolume: 1
- };
-
- /**
- * Enumeration of allowed mediators where the keys are method names.
- *
- * @type {Object}
- */
- const allowedMediators = {
- play: 1,
- pause: 1
- };
- function middlewareIterator(method) {
- return (value, mw) => {
- // if the previous middleware terminated, pass along the termination
- if (value === TERMINATOR) {
- return TERMINATOR;
- }
- if (mw[method]) {
- return mw[method](value);
- }
- return value;
- };
- }
- function executeRight(mws, method, value, terminated) {
- for (let i = mws.length - 1; i >= 0; i--) {
- const mw = mws[i];
- if (mw[method]) {
- mw[method](terminated, value);
- }
- }
- }
-
- /**
- * Clear the middleware cache for a player.
- *
- * @param { import('../player').default } player
- * A {@link Player} instance.
- */
- function clearCacheForPlayer(player) {
- middlewareInstances[player.id()] = null;
- }
-
- /**
- * {
- * [playerId]: [[mwFactory, mwInstance], ...]
- * }
- *
- * @private
- */
- function getOrCreateFactory(player, mwFactory) {
- const mws = middlewareInstances[player.id()];
- let mw = null;
- if (mws === undefined || mws === null) {
- mw = mwFactory(player);
- middlewareInstances[player.id()] = [[mwFactory, mw]];
- return mw;
- }
- for (let i = 0; i < mws.length; i++) {
- const [mwf, mwi] = mws[i];
- if (mwf !== mwFactory) {
- continue;
- }
- mw = mwi;
- }
- if (mw === null) {
- mw = mwFactory(player);
- mws.push([mwFactory, mw]);
- }
- return mw;
- }
- function setSourceHelper(src = {}, middleware = [], next, player, acc = [], lastRun = false) {
- const [mwFactory, ...mwrest] = middleware;
-
- // if mwFactory is a string, then we're at a fork in the road
- if (typeof mwFactory === 'string') {
- setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);
-
- // if we have an mwFactory, call it with the player to get the mw,
- // then call the mw's setSource method
- } else if (mwFactory) {
- const mw = getOrCreateFactory(player, mwFactory);
-
- // if setSource isn't present, implicitly select this middleware
- if (!mw.setSource) {
- acc.push(mw);
- return setSourceHelper(src, mwrest, next, player, acc, lastRun);
- }
- mw.setSource(Object.assign({}, src), function (err, _src) {
- // something happened, try the next middleware on the current level
- // make sure to use the old src
- if (err) {
- return setSourceHelper(src, mwrest, next, player, acc, lastRun);
- }
-
- // we've succeeded, now we need to go deeper
- acc.push(mw);
-
- // if it's the same type, continue down the current chain
- // otherwise, we want to go down the new chain
- setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);
- });
- } else if (mwrest.length) {
- setSourceHelper(src, mwrest, next, player, acc, lastRun);
- } else if (lastRun) {
- next(src, acc);
- } else {
- setSourceHelper(src, middlewares['*'], next, player, acc, true);
- }
- }
-
- /**
- * Mimetypes
- *
- * @see https://www.iana.org/assignments/media-types/media-types.xhtml
- * @typedef Mimetypes~Kind
- * @enum
- */
- const MimetypesKind = {
- opus: 'video/ogg',
- ogv: 'video/ogg',
- mp4: 'video/mp4',
- mov: 'video/mp4',
- m4v: 'video/mp4',
- mkv: 'video/x-matroska',
- m4a: 'audio/mp4',
- mp3: 'audio/mpeg',
- aac: 'audio/aac',
- caf: 'audio/x-caf',
- flac: 'audio/flac',
- oga: 'audio/ogg',
- wav: 'audio/wav',
- m3u8: 'application/x-mpegURL',
- mpd: 'application/dash+xml',
- jpg: 'image/jpeg',
- jpeg: 'image/jpeg',
- gif: 'image/gif',
- png: 'image/png',
- svg: 'image/svg+xml',
- webp: 'image/webp'
- };
-
- /**
- * Get the mimetype of a given src url if possible
- *
- * @param {string} src
- * The url to the src
- *
- * @return {string}
- * return the mimetype if it was known or empty string otherwise
- */
- const getMimetype = function (src = '') {
- const ext = getFileExtension(src);
- const mimetype = MimetypesKind[ext.toLowerCase()];
- return mimetype || '';
- };
-
- /**
- * Find the mime type of a given source string if possible. Uses the player
- * source cache.
- *
- * @param { import('../player').default } player
- * The player object
- *
- * @param {string} src
- * The source string
- *
- * @return {string}
- * The type that was found
- */
- const findMimetype = (player, src) => {
- if (!src) {
- return '';
- }
-
- // 1. check for the type in the `source` cache
- if (player.cache_.source.src === src && player.cache_.source.type) {
- return player.cache_.source.type;
- }
-
- // 2. see if we have this source in our `currentSources` cache
- const matchingSources = player.cache_.sources.filter(s => s.src === src);
- if (matchingSources.length) {
- return matchingSources[0].type;
- }
-
- // 3. look for the src url in source elements and use the type there
- const sources = player.$$('source');
- for (let i = 0; i < sources.length; i++) {
- const s = sources[i];
- if (s.type && s.src && s.src === src) {
- return s.type;
- }
- }
-
- // 4. finally fallback to our list of mime types based on src url extension
- return getMimetype(src);
- };
-
- /**
- * @module filter-source
- */
-
- /**
- * Filter out single bad source objects or multiple source objects in an
- * array. Also flattens nested source object arrays into a 1 dimensional
- * array of source objects.
- *
- * @param {Tech~SourceObject|Tech~SourceObject[]} src
- * The src object to filter
- *
- * @return {Tech~SourceObject[]}
- * An array of sourceobjects containing only valid sources
- *
- * @private
- */
- const filterSource = function (src) {
- // traverse array
- if (Array.isArray(src)) {
- let newsrc = [];
- src.forEach(function (srcobj) {
- srcobj = filterSource(srcobj);
- if (Array.isArray(srcobj)) {
- newsrc = newsrc.concat(srcobj);
- } else if (isObject$1(srcobj)) {
- newsrc.push(srcobj);
- }
- });
- src = newsrc;
- } else if (typeof src === 'string' && src.trim()) {
- // convert string into object
- src = [fixSource({
- src
- })];
- } else if (isObject$1(src) && typeof src.src === 'string' && src.src && src.src.trim()) {
- // src is already valid
- src = [fixSource(src)];
- } else {
- // invalid source, turn it into an empty array
- src = [];
- }
- return src;
- };
-
- /**
- * Checks src mimetype, adding it when possible
- *
- * @param {Tech~SourceObject} src
- * The src object to check
- * @return {Tech~SourceObject}
- * src Object with known type
- */
- function fixSource(src) {
- if (!src.type) {
- const mimetype = getMimetype(src.src);
- if (mimetype) {
- src.type = mimetype;
- }
- }
- return src;
- }
-
- var icons = "<svg xmlns=\"http://www.w3.org/2000/svg\">\n <defs>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play\">\n <path d=\"M16 10v28l22-14z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-pause\">\n <path d=\"M12 38h8V10h-8v28zm16-28v28h8V10h-8z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-audio\">\n <path d=\"M24 2C14.06 2 6 10.06 6 20v14c0 3.31 2.69 6 6 6h6V24h-8v-4c0-7.73 6.27-14 14-14s14 6.27 14 14v4h-8v16h6c3.31 0 6-2.69 6-6V20c0-9.94-8.06-18-18-18z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-captions\">\n <path d=\"M38 8H10c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h28c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM22 22h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2zm14 0h-3v-1h-4v6h4v-1h3v2a2 2 0 0 1-2 2h-6a2 2 0 0 1-2-2v-8a2 2 0 0 1 2-2h6a2 2 0 0 1 2 2v2z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-subtitles\">\n <path d=\"M40 8H8c-2.21 0-4 1.79-4 4v24c0 2.21 1.79 4 4 4h32c2.21 0 4-1.79 4-4V12c0-2.21-1.79-4-4-4zM8 24h8v4H8v-4zm20 12H8v-4h20v4zm12 0h-8v-4h8v4zm0-8H20v-4h20v4z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-enter\">\n <path d=\"M14 28h-4v10h10v-4h-6v-6zm-4-8h4v-6h6v-4H10v10zm24 14h-6v4h10V28h-4v6zm-6-24v4h6v6h4V10H28z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-fullscreen-exit\">\n <path d=\"M10 32h6v6h4V28H10v4zm6-16h-6v4h10V10h-4v6zm12 22h4v-6h6v-4H28v10zm4-22v-6h-4v10h10v-4h-6z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-play-circle\">\n <path d=\"M20 33l12-9-12-9v18zm4-29C12.95 4 4 12.95 4 24s8.95 20 20 20 20-8.95 20-20S35.05 4 24 4zm0 36c-8.82 0-16-7.18-16-16S15.18 8 24 8s16 7.18 16 16-7.18 16-16 16z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-mute\">\n <path d=\"M33 24c0-3.53-2.04-6.58-5-8.05v4.42l4.91 4.91c.06-.42.09-.85.09-1.28zm5 0c0 1.88-.41 3.65-1.08 5.28l3.03 3.03C41.25 29.82 42 27 42 24c0-8.56-5.99-15.72-14-17.54v4.13c5.78 1.72 10 7.07 10 13.41zM8.55 6L6 8.55 15.45 18H6v12h8l10 10V26.55l8.51 8.51c-1.34 1.03-2.85 1.86-4.51 2.36v4.13a17.94 17.94 0 0 0 7.37-3.62L39.45 42 42 39.45l-18-18L8.55 6zM24 8l-4.18 4.18L24 16.36V8z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-low\">\n <path d=\"M14 18v12h8l10 10V8L22 18h-8z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-medium\">\n <path d=\"M37 24c0-3.53-2.04-6.58-5-8.05v16.11c2.96-1.48 5-4.53 5-8.06zm-27-6v12h8l10 10V8L18 18h-8z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-volume-high\">\n <path d=\"M6 18v12h8l10 10V8L14 18H6zm27 6c0-3.53-2.04-6.58-5-8.05v16.11c2.96-1.48 5-4.53 5-8.06zM28 6.46v4.13c5.78 1.72 10 7.07 10 13.41s-4.22 11.69-10 13.41v4.13c8.01-1.82 14-8.97 14-17.54S36.01 8.28 28 6.46z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-spinner\">\n <path d=\"M18.8 21l9.53-16.51C26.94 4.18 25.49 4 24 4c-4.8 0-9.19 1.69-12.64 4.51l7.33 12.69.11-.2zm24.28-3c-1.84-5.85-6.3-10.52-11.99-12.68L23.77 18h19.31zm.52 2H28.62l.58 1 9.53 16.5C41.99 33.94 44 29.21 44 24c0-1.37-.14-2.71-.4-4zm-26.53 4l-7.8-13.5C6.01 14.06 4 18.79 4 24c0 1.37.14 2.71.4 4h14.98l-2.31-4zM4.92 30c1.84 5.85 6.3 10.52 11.99 12.68L24.23 30H4.92zm22.54 0l-7.8 13.51c1.4.31 2.85.49 4.34.49 4.8 0 9.19-1.69 12.64-4.51L29.31 26.8 27.46 30z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 24 24\" id=\"vjs-icon-hd\">\n <path d=\"M19 3H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14c1.1 0 2-.9 2-2V5c0-1.1-.9-2-2-2zm-8 12H9.5v-2h-2v2H6V9h1.5v2.5h2V9H11v6zm2-6h4c.55 0 1 .45 1 1v4c0 .55-.45 1-1 1h-4V9zm1.5 4.5h2v-3h-2v3z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 48 48\" id=\"vjs-icon-chapters\">\n <path d=\"M6 26h4v-4H6v4zm0 8h4v-4H6v4zm0-16h4v-4H6v4zm8 8h28v-4H14v4zm0 8h28v-4H14v4zm0-20v4h28v-4H14z\"></path>\n </symbol>\n <symbol viewBox=\"0 0 40 40\" id=\"vjs-icon-downloading\">\n <path d=\"M18.208 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-
- /**
- * @file loader.js
- */
-
- /**
- * The `MediaLoader` is the `Component` that decides which playback technology to load
- * when a player is initialized.
- *
- * @extends Component
- */
- class MediaLoader extends Component$1 {
- /**
- * Create an instance of this class.
- *
- * @param { import('../player').default } player
- * The `Player` that this class should attach to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function that is run when this component is ready.
- */
- constructor(player, options, ready) {
- // MediaLoader has no element
- const options_ = merge$2({
- createEl: false
- }, options);
- super(player, options_, ready);
-
- // If there are no sources when the player is initialized,
- // load the first supported playback technology.
-
- if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {
- for (let i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {
- const techName = toTitleCase$1(j[i]);
- let tech = Tech.getTech(techName);
-
- // Support old behavior of techs being registered as components.
- // Remove once that deprecated behavior is removed.
- if (!techName) {
- tech = Component$1.getComponent(techName);
- }
-
- // Check if the browser supports this technology
- if (tech && tech.isSupported()) {
- player.loadTech_(techName);
- break;
- }
- }
- } else {
- // Loop through playback technologies (e.g. HTML5) and check for support.
- // Then load the best source.
- // A few assumptions here:
- // All playback technologies respect preload false.
- player.src(options.playerOptions.sources);
- }
- }
- }
- Component$1.registerComponent('MediaLoader', MediaLoader);
-
- /**
- * @file clickable-component.js
- */
-
- /**
- * Component which is clickable or keyboard actionable, but is not a
- * native HTML button.
- *
- * @extends Component
- */
- class ClickableComponent extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of component options.
- *
- * @param {function} [options.clickHandler]
- * The function to call when the button is clicked / activated
- *
- * @param {string} [options.controlText]
- * The text to set on the button
- *
- * @param {string} [options.className]
- * A class or space separated list of classes to add the component
- *
- */
- constructor(player, options) {
- super(player, options);
- if (this.options_.controlText) {
- this.controlText(this.options_.controlText);
- }
- this.handleMouseOver_ = e => this.handleMouseOver(e);
- this.handleMouseOut_ = e => this.handleMouseOut(e);
- this.handleClick_ = e => this.handleClick(e);
- this.handleKeyDown_ = e => this.handleKeyDown(e);
- this.emitTapEvents();
- this.enable();
- }
-
- /**
- * Create the `ClickableComponent`s DOM element.
- *
- * @param {string} [tag=div]
- * The element's node type.
- *
- * @param {Object} [props={}]
- * An object of properties that should be set on the element.
- *
- * @param {Object} [attributes={}]
- * An object of attributes that should be set on the element.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl(tag = 'div', props = {}, attributes = {}) {
- props = Object.assign({
- className: this.buildCSSClass(),
- tabIndex: 0
- }, props);
- if (tag === 'button') {
- log$1.error(`Creating a ClickableComponent with an HTML element of ${tag} is not supported; use a Button instead.`);
- }
-
- // Add ARIA attributes for clickable element which is not a native HTML button
- attributes = Object.assign({
- role: 'button'
- }, attributes);
- this.tabIndex_ = props.tabIndex;
- const el = createEl(tag, props, attributes);
- if (!this.player_.options_.experimentalSvgIcons) {
- el.appendChild(createEl('span', {
- className: 'vjs-icon-placeholder'
- }, {
- 'aria-hidden': true
- }));
- }
- this.createControlTextEl(el);
- return el;
- }
- dispose() {
- // remove controlTextEl_ on dispose
- this.controlTextEl_ = null;
- super.dispose();
- }
-
- /**
- * Create a control text element on this `ClickableComponent`
- *
- * @param {Element} [el]
- * Parent element for the control text.
- *
- * @return {Element}
- * The control text element that gets created.
- */
- createControlTextEl(el) {
- this.controlTextEl_ = createEl('span', {
- className: 'vjs-control-text'
- }, {
- // let the screen reader user know that the text of the element may change
- 'aria-live': 'polite'
- });
- if (el) {
- el.appendChild(this.controlTextEl_);
- }
- this.controlText(this.controlText_, el);
- return this.controlTextEl_;
- }
-
- /**
- * Get or set the localize text to use for the controls on the `ClickableComponent`.
- *
- * @param {string} [text]
- * Control text for element.
- *
- * @param {Element} [el=this.el()]
- * Element to set the title on.
- *
- * @return {string}
- * - The control text when getting
- */
- controlText(text, el = this.el()) {
- if (text === undefined) {
- return this.controlText_ || 'Need Text';
- }
- const localizedText = this.localize(text);
-
- /** @protected */
- this.controlText_ = text;
- textContent(this.controlTextEl_, localizedText);
- if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {
- // Set title attribute if only an icon is shown
- el.setAttribute('title', localizedText);
- }
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-control vjs-button ${super.buildCSSClass()}`;
- }
-
- /**
- * Enable this `ClickableComponent`
- */
- enable() {
- if (!this.enabled_) {
- this.enabled_ = true;
- this.removeClass('vjs-disabled');
- this.el_.setAttribute('aria-disabled', 'false');
- if (typeof this.tabIndex_ !== 'undefined') {
- this.el_.setAttribute('tabIndex', this.tabIndex_);
- }
- this.on(['tap', 'click'], this.handleClick_);
- this.on('keydown', this.handleKeyDown_);
- }
- }
-
- /**
- * Disable this `ClickableComponent`
- */
- disable() {
- this.enabled_ = false;
- this.addClass('vjs-disabled');
- this.el_.setAttribute('aria-disabled', 'true');
- if (typeof this.tabIndex_ !== 'undefined') {
- this.el_.removeAttribute('tabIndex');
- }
- this.off('mouseover', this.handleMouseOver_);
- this.off('mouseout', this.handleMouseOut_);
- this.off(['tap', 'click'], this.handleClick_);
- this.off('keydown', this.handleKeyDown_);
- }
-
- /**
- * Handles language change in ClickableComponent for the player in components
- *
- *
- */
- handleLanguagechange() {
- this.controlText(this.controlText_);
- }
-
- /**
- * Event handler that is called when a `ClickableComponent` receives a
- * `click` or `tap` event.
- *
- * @param {Event} event
- * The `tap` or `click` event that caused this function to be called.
- *
- * @listens tap
- * @listens click
- * @abstract
- */
- handleClick(event) {
- if (this.options_.clickHandler) {
- this.options_.clickHandler.call(this, arguments);
- }
- }
-
- /**
- * Event handler that is called when a `ClickableComponent` receives a
- * `keydown` event.
- *
- * By default, if the key is Space or Enter, it will trigger a `click` event.
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Support Space or Enter key operation to fire a click event. Also,
- // prevent the event from propagating through the DOM and triggering
- // Player hotkeys.
- if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
- event.preventDefault();
- event.stopPropagation();
- this.trigger('click');
- } else {
- // Pass keypress handling up for unsupported keys
- super.handleKeyDown(event);
- }
- }
- }
- Component$1.registerComponent('ClickableComponent', ClickableComponent);
-
- /**
- * @file poster-image.js
- */
-
- /**
- * A `ClickableComponent` that handles showing the poster image for the player.
- *
- * @extends ClickableComponent
- */
- class PosterImage extends ClickableComponent {
- /**
- * Create an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should attach to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.update();
- this.update_ = e => this.update(e);
- player.on('posterchange', this.update_);
- }
-
- /**
- * Clean up and dispose of the `PosterImage`.
- */
- dispose() {
- this.player().off('posterchange', this.update_);
- super.dispose();
- }
-
- /**
- * Create the `PosterImage`s DOM element.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl() {
- // The el is an empty div to keep position in the DOM
- // A picture and img el will be inserted when a source is set
- return createEl('div', {
- className: 'vjs-poster'
- });
- }
-
- /**
- * Get or set the `PosterImage`'s crossOrigin option.
- *
- * @param {string|null} [value]
- * The value to set the crossOrigin to. If an argument is
- * given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
- *
- * @return {string|null}
- * - The current crossOrigin value of the `Player` when getting.
- * - undefined when setting
- */
- crossOrigin(value) {
- // `null` can be set to unset a value
- if (typeof value === 'undefined') {
- if (this.$('img')) {
- // If the poster's element exists, give its value
- return this.$('img').crossOrigin;
- } else if (this.player_.tech_ && this.player_.tech_.isReady_) {
- // If not but the tech is ready, query the tech
- return this.player_.crossOrigin();
- }
- // Otherwise check options as the poster is usually set before the state of crossorigin
- // can be retrieved by the getter
- return this.player_.options_.crossOrigin || this.player_.options_.crossorigin || null;
- }
- if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
- this.player_.log.warn(`crossOrigin must be null, "anonymous" or "use-credentials", given "${value}"`);
- return;
- }
- if (this.$('img')) {
- this.$('img').crossOrigin = value;
- }
- return;
- }
-
- /**
- * An {@link EventTarget~EventListener} for {@link Player#posterchange} events.
- *
- * @listens Player#posterchange
- *
- * @param {Event} [event]
- * The `Player#posterchange` event that triggered this function.
- */
- update(event) {
- const url = this.player().poster();
- this.setSrc(url);
-
- // If there's no poster source we should display:none on this component
- // so it's not still clickable or right-clickable
- if (url) {
- this.show();
- } else {
- this.hide();
- }
- }
-
- /**
- * Set the source of the `PosterImage` depending on the display method. (Re)creates
- * the inner picture and img elementss when needed.
- *
- * @param {string} [url]
- * The URL to the source for the `PosterImage`. If not specified or falsy,
- * any source and ant inner picture/img are removed.
- */
- setSrc(url) {
- if (!url) {
- this.el_.textContent = '';
- return;
- }
- if (!this.$('img')) {
- this.el_.appendChild(createEl('picture', {
- className: 'vjs-poster',
- // Don't want poster to be tabbable.
- tabIndex: -1
- }, {}, createEl('img', {
- loading: 'lazy',
- crossOrigin: this.crossOrigin()
- }, {
- alt: ''
- })));
- }
- this.$('img').src = url;
- }
-
- /**
- * An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See
- * {@link ClickableComponent#handleClick} for instances where this will be triggered.
- *
- * @listens tap
- * @listens click
- * @listens keydown
- *
- * @param {Event} event
- + The `click`, `tap` or `keydown` event that caused this function to be called.
- */
- handleClick(event) {
- // We don't want a click to trigger playback when controls are disabled
- if (!this.player_.controls()) {
- return;
- }
- if (this.player_.tech(true)) {
- this.player_.tech(true).focus();
- }
- if (this.player_.paused()) {
- silencePromise(this.player_.play());
- } else {
- this.player_.pause();
- }
- }
- }
-
- /**
- * Get or set the `PosterImage`'s crossorigin option. For the HTML5 player, this
- * sets the `crossOrigin` property on the `<img>` tag to control the CORS
- * behavior.
- *
- * @param {string|null} [value]
- * The value to set the `PosterImages`'s crossorigin to. If an argument is
- * given, must be one of `anonymous` or `use-credentials`.
- *
- * @return {string|null|undefined}
- * - The current crossorigin value of the `Player` when getting.
- * - undefined when setting
- */
- PosterImage.prototype.crossorigin = PosterImage.prototype.crossOrigin;
- Component$1.registerComponent('PosterImage', PosterImage);
-
- /**
- * @file text-track-display.js
- */
- const darkGray = '#222';
- const lightGray = '#ccc';
- const fontMap = {
- monospace: 'monospace',
- sansSerif: 'sans-serif',
- serif: 'serif',
- monospaceSansSerif: '"Andale Mono", "Lucida Console", monospace',
- monospaceSerif: '"Courier New", monospace',
- proportionalSansSerif: 'sans-serif',
- proportionalSerif: 'serif',
- casual: '"Comic Sans MS", Impact, fantasy',
- script: '"Monotype Corsiva", cursive',
- smallcaps: '"Andale Mono", "Lucida Console", monospace, sans-serif'
- };
-
- /**
- * Construct an rgba color from a given hex color code.
- *
- * @param {number} color
- * Hex number for color, like #f0e or #f604e2.
- *
- * @param {number} opacity
- * Value for opacity, 0.0 - 1.0.
- *
- * @return {string}
- * The rgba color that was created, like 'rgba(255, 0, 0, 0.3)'.
- */
- function constructColor(color, opacity) {
- let hex;
- if (color.length === 4) {
- // color looks like "#f0e"
- hex = color[1] + color[1] + color[2] + color[2] + color[3] + color[3];
- } else if (color.length === 7) {
- // color looks like "#f604e2"
- hex = color.slice(1);
- } else {
- throw new Error('Invalid color code provided, ' + color + '; must be formatted as e.g. #f0e or #f604e2.');
- }
- return 'rgba(' + parseInt(hex.slice(0, 2), 16) + ',' + parseInt(hex.slice(2, 4), 16) + ',' + parseInt(hex.slice(4, 6), 16) + ',' + opacity + ')';
- }
-
- /**
- * Try to update the style of a DOM element. Some style changes will throw an error,
- * particularly in IE8. Those should be noops.
- *
- * @param {Element} el
- * The DOM element to be styled.
- *
- * @param {string} style
- * The CSS property on the element that should be styled.
- *
- * @param {string} rule
- * The style rule that should be applied to the property.
- *
- * @private
- */
- function tryUpdateStyle(el, style, rule) {
- try {
- el.style[style] = rule;
- } catch (e) {
- // Satisfies linter.
- return;
- }
- }
-
- /**
- * Converts the CSS top/right/bottom/left property numeric value to string in pixels.
- *
- * @param {number} position
- * The CSS top/right/bottom/left property value.
- *
- * @return {string}
- * The CSS property value that was created, like '10px'.
- *
- * @private
- */
- function getCSSPositionValue(position) {
- return position ? `${position}px` : '';
- }
-
- /**
- * The component for displaying text track cues.
- *
- * @extends Component
- */
- class TextTrackDisplay extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when `TextTrackDisplay` is ready.
- */
- constructor(player, options, ready) {
- super(player, options, ready);
- const updateDisplayTextHandler = e => this.updateDisplay(e);
- const updateDisplayHandler = e => {
- this.updateDisplayOverlay();
- this.updateDisplay(e);
- };
- player.on('loadstart', e => this.toggleDisplay(e));
- player.on('texttrackchange', updateDisplayTextHandler);
- player.on('loadedmetadata', e => {
- this.updateDisplayOverlay();
- this.preselectTrack(e);
- });
-
- // This used to be called during player init, but was causing an error
- // if a track should show by default and the display hadn't loaded yet.
- // Should probably be moved to an external track loader when we support
- // tracks that don't need a display.
- player.ready(bind_(this, function () {
- if (player.tech_ && player.tech_.featuresNativeTextTracks) {
- this.hide();
- return;
- }
- player.on('fullscreenchange', updateDisplayHandler);
- player.on('playerresize', updateDisplayHandler);
- const screenOrientation = window.screen.orientation || window;
- const changeOrientationEvent = window.screen.orientation ? 'change' : 'orientationchange';
- screenOrientation.addEventListener(changeOrientationEvent, updateDisplayHandler);
- player.on('dispose', () => screenOrientation.removeEventListener(changeOrientationEvent, updateDisplayHandler));
- const tracks = this.options_.playerOptions.tracks || [];
- for (let i = 0; i < tracks.length; i++) {
- this.player_.addRemoteTextTrack(tracks[i], true);
- }
- this.preselectTrack();
- }));
- }
-
- /**
- * Preselect a track following this precedence:
- * - matches the previously selected {@link TextTrack}'s language and kind
- * - matches the previously selected {@link TextTrack}'s language only
- * - is the first default captions track
- * - is the first default descriptions track
- *
- * @listens Player#loadstart
- */
- preselectTrack() {
- const modes = {
- captions: 1,
- subtitles: 1
- };
- const trackList = this.player_.textTracks();
- const userPref = this.player_.cache_.selectedLanguage;
- let firstDesc;
- let firstCaptions;
- let preferredTrack;
- for (let i = 0; i < trackList.length; i++) {
- const track = trackList[i];
- if (userPref && userPref.enabled && userPref.language && userPref.language === track.language && track.kind in modes) {
- // Always choose the track that matches both language and kind
- if (track.kind === userPref.kind) {
- preferredTrack = track;
- // or choose the first track that matches language
- } else if (!preferredTrack) {
- preferredTrack = track;
- }
-
- // clear everything if offTextTrackMenuItem was clicked
- } else if (userPref && !userPref.enabled) {
- preferredTrack = null;
- firstDesc = null;
- firstCaptions = null;
- } else if (track.default) {
- if (track.kind === 'descriptions' && !firstDesc) {
- firstDesc = track;
- } else if (track.kind in modes && !firstCaptions) {
- firstCaptions = track;
- }
- }
- }
-
- // The preferredTrack matches the user preference and takes
- // precedence over all the other tracks.
- // So, display the preferredTrack before the first default track
- // and the subtitles/captions track before the descriptions track
- if (preferredTrack) {
- preferredTrack.mode = 'showing';
- } else if (firstCaptions) {
- firstCaptions.mode = 'showing';
- } else if (firstDesc) {
- firstDesc.mode = 'showing';
- }
- }
-
- /**
- * Turn display of {@link TextTrack}'s from the current state into the other state.
- * There are only two states:
- * - 'shown'
- * - 'hidden'
- *
- * @listens Player#loadstart
- */
- toggleDisplay() {
- if (this.player_.tech_ && this.player_.tech_.featuresNativeTextTracks) {
- this.hide();
- } else {
- this.show();
- }
- }
-
- /**
- * Create the {@link Component}'s DOM element.
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-text-track-display'
- }, {
- 'translate': 'yes',
- 'aria-live': 'off',
- 'aria-atomic': 'true'
- });
- }
-
- /**
- * Clear all displayed {@link TextTrack}s.
- */
- clearDisplay() {
- if (typeof window.WebVTT === 'function') {
- window.WebVTT.processCues(window, [], this.el_);
- }
- }
-
- /**
- * Update the displayed TextTrack when a either a {@link Player#texttrackchange} or
- * a {@link Player#fullscreenchange} is fired.
- *
- * @listens Player#texttrackchange
- * @listens Player#fullscreenchange
- */
- updateDisplay() {
- const tracks = this.player_.textTracks();
- const allowMultipleShowingTracks = this.options_.allowMultipleShowingTracks;
- this.clearDisplay();
- if (allowMultipleShowingTracks) {
- const showingTracks = [];
- for (let i = 0; i < tracks.length; ++i) {
- const track = tracks[i];
- if (track.mode !== 'showing') {
- continue;
- }
- showingTracks.push(track);
- }
- this.updateForTrack(showingTracks);
- return;
- }
-
- // Track display prioritization model: if multiple tracks are 'showing',
- // display the first 'subtitles' or 'captions' track which is 'showing',
- // otherwise display the first 'descriptions' track which is 'showing'
-
- let descriptionsTrack = null;
- let captionsSubtitlesTrack = null;
- let i = tracks.length;
- while (i--) {
- const track = tracks[i];
- if (track.mode === 'showing') {
- if (track.kind === 'descriptions') {
- descriptionsTrack = track;
- } else {
- captionsSubtitlesTrack = track;
- }
- }
- }
- if (captionsSubtitlesTrack) {
- if (this.getAttribute('aria-live') !== 'off') {
- this.setAttribute('aria-live', 'off');
- }
- this.updateForTrack(captionsSubtitlesTrack);
- } else if (descriptionsTrack) {
- if (this.getAttribute('aria-live') !== 'assertive') {
- this.setAttribute('aria-live', 'assertive');
- }
- this.updateForTrack(descriptionsTrack);
- }
- }
-
- /**
- * Updates the displayed TextTrack to be sure it overlays the video when a either
- * a {@link Player#texttrackchange} or a {@link Player#fullscreenchange} is fired.
- */
- updateDisplayOverlay() {
- // inset-inline and inset-block are not supprted on old chrome, but these are
- // only likely to be used on TV devices
- if (!this.player_.videoHeight() || !window.CSS.supports('inset-inline: 10px')) {
- return;
- }
- const playerWidth = this.player_.currentWidth();
- const playerHeight = this.player_.currentHeight();
- const playerAspectRatio = playerWidth / playerHeight;
- const videoAspectRatio = this.player_.videoWidth() / this.player_.videoHeight();
- let insetInlineMatch = 0;
- let insetBlockMatch = 0;
- if (Math.abs(playerAspectRatio - videoAspectRatio) > 0.1) {
- if (playerAspectRatio > videoAspectRatio) {
- insetInlineMatch = Math.round((playerWidth - playerHeight * videoAspectRatio) / 2);
- } else {
- insetBlockMatch = Math.round((playerHeight - playerWidth / videoAspectRatio) / 2);
- }
- }
- tryUpdateStyle(this.el_, 'insetInline', getCSSPositionValue(insetInlineMatch));
- tryUpdateStyle(this.el_, 'insetBlock', getCSSPositionValue(insetBlockMatch));
- }
-
- /**
- * Style {@Link TextTrack} activeCues according to {@Link TextTrackSettings}.
- *
- * @param {TextTrack} track
- * Text track object containing active cues to style.
- */
- updateDisplayState(track) {
- const overrides = this.player_.textTrackSettings.getValues();
- const cues = track.activeCues;
- let i = cues.length;
- while (i--) {
- const cue = cues[i];
- if (!cue) {
- continue;
- }
- const cueDiv = cue.displayState;
- if (overrides.color) {
- cueDiv.firstChild.style.color = overrides.color;
- }
- if (overrides.textOpacity) {
- tryUpdateStyle(cueDiv.firstChild, 'color', constructColor(overrides.color || '#fff', overrides.textOpacity));
- }
- if (overrides.backgroundColor) {
- cueDiv.firstChild.style.backgroundColor = overrides.backgroundColor;
- }
- if (overrides.backgroundOpacity) {
- tryUpdateStyle(cueDiv.firstChild, 'backgroundColor', constructColor(overrides.backgroundColor || '#000', overrides.backgroundOpacity));
- }
- if (overrides.windowColor) {
- if (overrides.windowOpacity) {
- tryUpdateStyle(cueDiv, 'backgroundColor', constructColor(overrides.windowColor, overrides.windowOpacity));
- } else {
- cueDiv.style.backgroundColor = overrides.windowColor;
- }
- }
- if (overrides.edgeStyle) {
- if (overrides.edgeStyle === 'dropshadow') {
- cueDiv.firstChild.style.textShadow = `2px 2px 3px ${darkGray}, 2px 2px 4px ${darkGray}, 2px 2px 5px ${darkGray}`;
- } else if (overrides.edgeStyle === 'raised') {
- cueDiv.firstChild.style.textShadow = `1px 1px ${darkGray}, 2px 2px ${darkGray}, 3px 3px ${darkGray}`;
- } else if (overrides.edgeStyle === 'depressed') {
- cueDiv.firstChild.style.textShadow = `1px 1px ${lightGray}, 0 1px ${lightGray}, -1px -1px ${darkGray}, 0 -1px ${darkGray}`;
- } else if (overrides.edgeStyle === 'uniform') {
- cueDiv.firstChild.style.textShadow = `0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}, 0 0 4px ${darkGray}`;
- }
- }
- if (overrides.fontPercent && overrides.fontPercent !== 1) {
- const fontSize = window.parseFloat(cueDiv.style.fontSize);
- cueDiv.style.fontSize = fontSize * overrides.fontPercent + 'px';
- cueDiv.style.height = 'auto';
- cueDiv.style.top = 'auto';
- }
- if (overrides.fontFamily && overrides.fontFamily !== 'default') {
- if (overrides.fontFamily === 'small-caps') {
- cueDiv.firstChild.style.fontVariant = 'small-caps';
- } else {
- cueDiv.firstChild.style.fontFamily = fontMap[overrides.fontFamily];
- }
- }
- }
- }
-
- /**
- * Add an {@link TextTrack} to to the {@link Tech}s {@link TextTrackList}.
- *
- * @param {TextTrack|TextTrack[]} tracks
- * Text track object or text track array to be added to the list.
- */
- updateForTrack(tracks) {
- if (!Array.isArray(tracks)) {
- tracks = [tracks];
- }
- if (typeof window.WebVTT !== 'function' || tracks.every(track => {
- return !track.activeCues;
- })) {
- return;
- }
- const cues = [];
-
- // push all active track cues
- for (let i = 0; i < tracks.length; ++i) {
- const track = tracks[i];
- for (let j = 0; j < track.activeCues.length; ++j) {
- cues.push(track.activeCues[j]);
- }
- }
-
- // removes all cues before it processes new ones
- window.WebVTT.processCues(window, cues, this.el_);
-
- // add unique class to each language text track & add settings styling if necessary
- for (let i = 0; i < tracks.length; ++i) {
- const track = tracks[i];
- for (let j = 0; j < track.activeCues.length; ++j) {
- const cueEl = track.activeCues[j].displayState;
- addClass(cueEl, 'vjs-text-track-cue', 'vjs-text-track-cue-' + (track.language ? track.language : i));
- if (track.language) {
- setAttribute(cueEl, 'lang', track.language);
- }
- }
- if (this.player_.textTrackSettings) {
- this.updateDisplayState(track);
- }
- }
- }
- }
- Component$1.registerComponent('TextTrackDisplay', TextTrackDisplay);
-
- /**
- * @file loading-spinner.js
- */
-
- /**
- * A loading spinner for use during waiting/loading events.
- *
- * @extends Component
- */
- class LoadingSpinner extends Component$1 {
- /**
- * Create the `LoadingSpinner`s DOM element.
- *
- * @return {Element}
- * The dom element that gets created.
- */
- createEl() {
- const isAudio = this.player_.isAudio();
- const playerType = this.localize(isAudio ? 'Audio Player' : 'Video Player');
- const controlText = createEl('span', {
- className: 'vjs-control-text',
- textContent: this.localize('{1} is loading.', [playerType])
- });
- const el = super.createEl('div', {
- className: 'vjs-loading-spinner',
- dir: 'ltr'
- });
- el.appendChild(controlText);
- return el;
- }
-
- /**
- * Update control text on languagechange
- */
- handleLanguagechange() {
- this.$('.vjs-control-text').textContent = this.localize('{1} is loading.', [this.player_.isAudio() ? 'Audio Player' : 'Video Player']);
- }
- }
- Component$1.registerComponent('LoadingSpinner', LoadingSpinner);
-
- /**
- * @file button.js
- */
-
- /**
- * Base class for all buttons.
- *
- * @extends ClickableComponent
- */
- class Button extends ClickableComponent {
- /**
- * Create the `Button`s DOM element.
- *
- * @param {string} [tag="button"]
- * The element's node type. This argument is IGNORED: no matter what
- * is passed, it will always create a `button` element.
- *
- * @param {Object} [props={}]
- * An object of properties that should be set on the element.
- *
- * @param {Object} [attributes={}]
- * An object of attributes that should be set on the element.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl(tag, props = {}, attributes = {}) {
- tag = 'button';
- props = Object.assign({
- className: this.buildCSSClass()
- }, props);
-
- // Add attributes for button element
- attributes = Object.assign({
- // Necessary since the default button type is "submit"
- type: 'button'
- }, attributes);
- const el = createEl(tag, props, attributes);
- if (!this.player_.options_.experimentalSvgIcons) {
- el.appendChild(createEl('span', {
- className: 'vjs-icon-placeholder'
- }, {
- 'aria-hidden': true
- }));
- }
- this.createControlTextEl(el);
- return el;
- }
-
- /**
- * Add a child `Component` inside of this `Button`.
- *
- * @param {string|Component} child
- * The name or instance of a child to add.
- *
- * @param {Object} [options={}]
- * The key/value store of options that will get passed to children of
- * the child.
- *
- * @return {Component}
- * The `Component` that gets added as a child. When using a string the
- * `Component` will get created by this process.
- *
- * @deprecated since version 5
- */
- addChild(child, options = {}) {
- const className = this.constructor.name;
- log$1.warn(`Adding an actionable (user controllable) child to a Button (${className}) is not supported; use a ClickableComponent instead.`);
-
- // Avoid the error message generated by ClickableComponent's addChild method
- return Component$1.prototype.addChild.call(this, child, options);
- }
-
- /**
- * Enable the `Button` element so that it can be activated or clicked. Use this with
- * {@link Button#disable}.
- */
- enable() {
- super.enable();
- this.el_.removeAttribute('disabled');
- }
-
- /**
- * Disable the `Button` element so that it cannot be activated or clicked. Use this with
- * {@link Button#enable}.
- */
- disable() {
- super.disable();
- this.el_.setAttribute('disabled', 'disabled');
- }
-
- /**
- * This gets called when a `Button` has focus and `keydown` is triggered via a key
- * press.
- *
- * @param {KeyboardEvent} event
- * The event that caused this function to get called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Ignore Space or Enter key operation, which is handled by the browser for
- // a button - though not for its super class, ClickableComponent. Also,
- // prevent the event from propagating through the DOM and triggering Player
- // hotkeys. We do not preventDefault here because we _want_ the browser to
- // handle it.
- if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
- event.stopPropagation();
- return;
- }
-
- // Pass keypress handling up for unsupported keys
- super.handleKeyDown(event);
- }
- }
- Component$1.registerComponent('Button', Button);
-
- /**
- * @file big-play-button.js
- */
-
- /**
- * The initial play button that shows before the video has played. The hiding of the
- * `BigPlayButton` get done via CSS and `Player` states.
- *
- * @extends Button
- */
- class BigPlayButton extends Button {
- constructor(player, options) {
- super(player, options);
- this.mouseused_ = false;
- this.setIcon('play');
- this.on('mousedown', e => this.handleMouseDown(e));
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object. Always returns 'vjs-big-play-button'.
- */
- buildCSSClass() {
- return 'vjs-big-play-button';
- }
-
- /**
- * This gets called when a `BigPlayButton` "clicked". See {@link ClickableComponent}
- * for more detailed information on what a click can be.
- *
- * @param {KeyboardEvent|MouseEvent|TouchEvent} event
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- const playPromise = this.player_.play();
-
- // exit early if clicked via the mouse
- if (this.mouseused_ && 'clientX' in event && 'clientY' in event) {
- silencePromise(playPromise);
- if (this.player_.tech(true)) {
- this.player_.tech(true).focus();
- }
- return;
- }
- const cb = this.player_.getChild('controlBar');
- const playToggle = cb && cb.getChild('playToggle');
- if (!playToggle) {
- this.player_.tech(true).focus();
- return;
- }
- const playFocus = () => playToggle.focus();
- if (isPromise(playPromise)) {
- playPromise.then(playFocus, () => {});
- } else {
- this.setTimeout(playFocus, 1);
- }
- }
-
- /**
- * Event handler that is called when a `BigPlayButton` receives a
- * `keydown` event.
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- this.mouseused_ = false;
- super.handleKeyDown(event);
- }
-
- /**
- * Handle `mousedown` events on the `BigPlayButton`.
- *
- * @param {MouseEvent} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousedown
- */
- handleMouseDown(event) {
- this.mouseused_ = true;
- }
- }
-
- /**
- * The text that should display over the `BigPlayButton`s controls. Added to for localization.
- *
- * @type {string}
- * @protected
- */
- BigPlayButton.prototype.controlText_ = 'Play Video';
- Component$1.registerComponent('BigPlayButton', BigPlayButton);
-
- /**
- * @file close-button.js
- */
-
- /**
- * The `CloseButton` is a `{@link Button}` that fires a `close` event when
- * it gets clicked.
- *
- * @extends Button
- */
- class CloseButton extends Button {
- /**
- * Creates an instance of the this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.setIcon('cancel');
- this.controlText(options && options.controlText || this.localize('Close'));
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-close-button ${super.buildCSSClass()}`;
- }
-
- /**
- * This gets called when a `CloseButton` gets clicked. See
- * {@link ClickableComponent#handleClick} for more information on when
- * this will be triggered
- *
- * @param {Event} event
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- * @fires CloseButton#close
- */
- handleClick(event) {
- /**
- * Triggered when the a `CloseButton` is clicked.
- *
- * @event CloseButton#close
- * @type {Event}
- *
- * @property {boolean} [bubbles=false]
- * set to false so that the close event does not
- * bubble up to parents if there is no listener
- */
- this.trigger({
- type: 'close',
- bubbles: false
- });
- }
- /**
- * Event handler that is called when a `CloseButton` receives a
- * `keydown` event.
- *
- * By default, if the key is Esc, it will trigger a `click` event.
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Esc button will trigger `click` event
- if (keycode.isEventKey(event, 'Esc')) {
- event.preventDefault();
- event.stopPropagation();
- this.trigger('click');
- } else {
- // Pass keypress handling up for unsupported keys
- super.handleKeyDown(event);
- }
- }
- }
- Component$1.registerComponent('CloseButton', CloseButton);
-
- /**
- * @file play-toggle.js
- */
-
- /**
- * Button to toggle between play and pause.
- *
- * @extends Button
- */
- class PlayToggle extends Button {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- super(player, options);
-
- // show or hide replay icon
- options.replay = options.replay === undefined || options.replay;
- this.setIcon('play');
- this.on(player, 'play', e => this.handlePlay(e));
- this.on(player, 'pause', e => this.handlePause(e));
- if (options.replay) {
- this.on(player, 'ended', e => this.handleEnded(e));
- }
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-play-control ${super.buildCSSClass()}`;
- }
-
- /**
- * This gets called when an `PlayToggle` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- if (this.player_.paused()) {
- silencePromise(this.player_.play());
- } else {
- this.player_.pause();
- }
- }
-
- /**
- * This gets called once after the video has ended and the user seeks so that
- * we can change the replay button back to a play button.
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#seeked
- */
- handleSeeked(event) {
- this.removeClass('vjs-ended');
- if (this.player_.paused()) {
- this.handlePause(event);
- } else {
- this.handlePlay(event);
- }
- }
-
- /**
- * Add the vjs-playing class to the element so it can change appearance.
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#play
- */
- handlePlay(event) {
- this.removeClass('vjs-ended', 'vjs-paused');
- this.addClass('vjs-playing');
- // change the button text to "Pause"
- this.setIcon('pause');
- this.controlText('Pause');
- }
-
- /**
- * Add the vjs-paused class to the element so it can change appearance.
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#pause
- */
- handlePause(event) {
- this.removeClass('vjs-playing');
- this.addClass('vjs-paused');
- // change the button text to "Play"
- this.setIcon('play');
- this.controlText('Play');
- }
-
- /**
- * Add the vjs-ended class to the element so it can change appearance
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#ended
- */
- handleEnded(event) {
- this.removeClass('vjs-playing');
- this.addClass('vjs-ended');
- // change the button text to "Replay"
- this.setIcon('replay');
- this.controlText('Replay');
-
- // on the next seek remove the replay button
- this.one(this.player_, 'seeked', e => this.handleSeeked(e));
- }
- }
-
- /**
- * The text that should display over the `PlayToggle`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- PlayToggle.prototype.controlText_ = 'Play';
- Component$1.registerComponent('PlayToggle', PlayToggle);
-
- /**
- * @file time-display.js
- */
-
- /**
- * Displays time information about the video
- *
- * @extends Component
- */
- class TimeDisplay extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.on(player, ['timeupdate', 'ended', 'seeking'], e => this.update(e));
- this.updateTextNode_();
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const className = this.buildCSSClass();
- const el = super.createEl('div', {
- className: `${className} vjs-time-control vjs-control`
- });
- const span = createEl('span', {
- className: 'vjs-control-text',
- textContent: `${this.localize(this.labelText_)}\u00a0`
- }, {
- role: 'presentation'
- });
- el.appendChild(span);
- this.contentEl_ = createEl('span', {
- className: `${className}-display`
- }, {
- // span elements have no implicit role, but some screen readers (notably VoiceOver)
- // treat them as a break between items in the DOM when using arrow keys
- // (or left-to-right swipes on iOS) to read contents of a page. Using
- // role='presentation' causes VoiceOver to NOT treat this span as a break.
- role: 'presentation'
- });
- el.appendChild(this.contentEl_);
- return el;
- }
- dispose() {
- this.contentEl_ = null;
- this.textNode_ = null;
- super.dispose();
- }
-
- /**
- * Updates the displayed time according to the `updateContent` function which is defined in the child class.
- *
- * @param {Event} [event]
- * The `timeupdate`, `ended` or `seeking` (if enableSmoothSeeking is true) event that caused this function to be called.
- */
- update(event) {
- if (!this.player_.options_.enableSmoothSeeking && event.type === 'seeking') {
- return;
- }
- this.updateContent(event);
- }
-
- /**
- * Updates the time display text node with a new time
- *
- * @param {number} [time=0] the time to update to
- *
- * @private
- */
- updateTextNode_(time = 0) {
- time = formatTime(time);
- if (this.formattedTime_ === time) {
- return;
- }
- this.formattedTime_ = time;
- this.requestNamedAnimationFrame('TimeDisplay#updateTextNode_', () => {
- if (!this.contentEl_) {
- return;
- }
- let oldNode = this.textNode_;
- if (oldNode && this.contentEl_.firstChild !== oldNode) {
- oldNode = null;
- log$1.warn('TimeDisplay#updateTextnode_: Prevented replacement of text node element since it was no longer a child of this node. Appending a new node instead.');
- }
- this.textNode_ = document.createTextNode(this.formattedTime_);
- if (!this.textNode_) {
- return;
- }
- if (oldNode) {
- this.contentEl_.replaceChild(this.textNode_, oldNode);
- } else {
- this.contentEl_.appendChild(this.textNode_);
- }
- });
- }
-
- /**
- * To be filled out in the child class, should update the displayed time
- * in accordance with the fact that the current time has changed.
- *
- * @param {Event} [event]
- * The `timeupdate` event that caused this to run.
- *
- * @listens Player#timeupdate
- */
- updateContent(event) {}
- }
-
- /**
- * The text that is added to the `TimeDisplay` for screen reader users.
- *
- * @type {string}
- * @private
- */
- TimeDisplay.prototype.labelText_ = 'Time';
-
- /**
- * The text that should display over the `TimeDisplay`s controls. Added to for localization.
- *
- * @type {string}
- * @protected
- *
- * @deprecated in v7; controlText_ is not used in non-active display Components
- */
- TimeDisplay.prototype.controlText_ = 'Time';
- Component$1.registerComponent('TimeDisplay', TimeDisplay);
-
- /**
- * @file current-time-display.js
- */
-
- /**
- * Displays the current time
- *
- * @extends Component
- */
- class CurrentTimeDisplay extends TimeDisplay {
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return 'vjs-current-time';
- }
-
- /**
- * Update current time display
- *
- * @param {Event} [event]
- * The `timeupdate` event that caused this function to run.
- *
- * @listens Player#timeupdate
- */
- updateContent(event) {
- // Allows for smooth scrubbing, when player can't keep up.
- let time;
- if (this.player_.ended()) {
- time = this.player_.duration();
- } else {
- time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
- }
- this.updateTextNode_(time);
- }
- }
-
- /**
- * The text that is added to the `CurrentTimeDisplay` for screen reader users.
- *
- * @type {string}
- * @private
- */
- CurrentTimeDisplay.prototype.labelText_ = 'Current Time';
-
- /**
- * The text that should display over the `CurrentTimeDisplay`s controls. Added to for localization.
- *
- * @type {string}
- * @protected
- *
- * @deprecated in v7; controlText_ is not used in non-active display Components
- */
- CurrentTimeDisplay.prototype.controlText_ = 'Current Time';
- Component$1.registerComponent('CurrentTimeDisplay', CurrentTimeDisplay);
-
- /**
- * @file duration-display.js
- */
-
- /**
- * Displays the duration
- *
- * @extends Component
- */
- class DurationDisplay extends TimeDisplay {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- const updateContent = e => this.updateContent(e);
-
- // we do not want to/need to throttle duration changes,
- // as they should always display the changed duration as
- // it has changed
- this.on(player, 'durationchange', updateContent);
-
- // Listen to loadstart because the player duration is reset when a new media element is loaded,
- // but the durationchange on the user agent will not fire.
- // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}
- this.on(player, 'loadstart', updateContent);
-
- // Also listen for timeupdate (in the parent) and loadedmetadata because removing those
- // listeners could have broken dependent applications/libraries. These
- // can likely be removed for 7.0.
- this.on(player, 'loadedmetadata', updateContent);
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return 'vjs-duration';
- }
-
- /**
- * Update duration time display.
- *
- * @param {Event} [event]
- * The `durationchange`, `timeupdate`, or `loadedmetadata` event that caused
- * this function to be called.
- *
- * @listens Player#durationchange
- * @listens Player#timeupdate
- * @listens Player#loadedmetadata
- */
- updateContent(event) {
- const duration = this.player_.duration();
- this.updateTextNode_(duration);
- }
- }
-
- /**
- * The text that is added to the `DurationDisplay` for screen reader users.
- *
- * @type {string}
- * @private
- */
- DurationDisplay.prototype.labelText_ = 'Duration';
-
- /**
- * The text that should display over the `DurationDisplay`s controls. Added to for localization.
- *
- * @type {string}
- * @protected
- *
- * @deprecated in v7; controlText_ is not used in non-active display Components
- */
- DurationDisplay.prototype.controlText_ = 'Duration';
- Component$1.registerComponent('DurationDisplay', DurationDisplay);
-
- /**
- * @file time-divider.js
- */
-
- /**
- * The separator between the current time and duration.
- * Can be hidden if it's not needed in the design.
- *
- * @extends Component
- */
- class TimeDivider extends Component$1 {
- /**
- * Create the component's DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl('div', {
- className: 'vjs-time-control vjs-time-divider'
- }, {
- // this element and its contents can be hidden from assistive techs since
- // it is made extraneous by the announcement of the control text
- // for the current time and duration displays
- 'aria-hidden': true
- });
- const div = super.createEl('div');
- const span = super.createEl('span', {
- textContent: '/'
- });
- div.appendChild(span);
- el.appendChild(div);
- return el;
- }
- }
- Component$1.registerComponent('TimeDivider', TimeDivider);
-
- /**
- * @file remaining-time-display.js
- */
-
- /**
- * Displays the time left in the video
- *
- * @extends Component
- */
- class RemainingTimeDisplay extends TimeDisplay {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.on(player, 'durationchange', e => this.updateContent(e));
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return 'vjs-remaining-time';
- }
-
- /**
- * Create the `Component`'s DOM element with the "minus" character prepend to the time
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl();
- if (this.options_.displayNegative !== false) {
- el.insertBefore(createEl('span', {}, {
- 'aria-hidden': true
- }, '-'), this.contentEl_);
- }
- return el;
- }
-
- /**
- * Update remaining time display.
- *
- * @param {Event} [event]
- * The `timeupdate` or `durationchange` event that caused this to run.
- *
- * @listens Player#timeupdate
- * @listens Player#durationchange
- */
- updateContent(event) {
- if (typeof this.player_.duration() !== 'number') {
- return;
- }
- let time;
-
- // @deprecated We should only use remainingTimeDisplay
- // as of video.js 7
- if (this.player_.ended()) {
- time = 0;
- } else if (this.player_.remainingTimeDisplay) {
- time = this.player_.remainingTimeDisplay();
- } else {
- time = this.player_.remainingTime();
- }
- this.updateTextNode_(time);
- }
- }
-
- /**
- * The text that is added to the `RemainingTimeDisplay` for screen reader users.
- *
- * @type {string}
- * @private
- */
- RemainingTimeDisplay.prototype.labelText_ = 'Remaining Time';
-
- /**
- * The text that should display over the `RemainingTimeDisplay`s controls. Added to for localization.
- *
- * @type {string}
- * @protected
- *
- * @deprecated in v7; controlText_ is not used in non-active display Components
- */
- RemainingTimeDisplay.prototype.controlText_ = 'Remaining Time';
- Component$1.registerComponent('RemainingTimeDisplay', RemainingTimeDisplay);
-
- /**
- * @file live-display.js
- */
-
- // TODO - Future make it click to snap to live
-
- /**
- * Displays the live indicator when duration is Infinity.
- *
- * @extends Component
- */
- class LiveDisplay extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.updateShowing();
- this.on(this.player(), 'durationchange', e => this.updateShowing(e));
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl('div', {
- className: 'vjs-live-control vjs-control'
- });
- this.contentEl_ = createEl('div', {
- className: 'vjs-live-display'
- }, {
- 'aria-live': 'off'
- });
- this.contentEl_.appendChild(createEl('span', {
- className: 'vjs-control-text',
- textContent: `${this.localize('Stream Type')}\u00a0`
- }));
- this.contentEl_.appendChild(document.createTextNode(this.localize('LIVE')));
- el.appendChild(this.contentEl_);
- return el;
- }
- dispose() {
- this.contentEl_ = null;
- super.dispose();
- }
-
- /**
- * Check the duration to see if the LiveDisplay should be showing or not. Then show/hide
- * it accordingly
- *
- * @param {Event} [event]
- * The {@link Player#durationchange} event that caused this function to run.
- *
- * @listens Player#durationchange
- */
- updateShowing(event) {
- if (this.player().duration() === Infinity) {
- this.show();
- } else {
- this.hide();
- }
- }
- }
- Component$1.registerComponent('LiveDisplay', LiveDisplay);
-
- /**
- * @file seek-to-live.js
- */
-
- /**
- * Displays the live indicator when duration is Infinity.
- *
- * @extends Component
- */
- class SeekToLive extends Button {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.updateLiveEdgeStatus();
- if (this.player_.liveTracker) {
- this.updateLiveEdgeStatusHandler_ = e => this.updateLiveEdgeStatus(e);
- this.on(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);
- }
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl('button', {
- className: 'vjs-seek-to-live-control vjs-control'
- });
- this.setIcon('circle', el);
- this.textEl_ = createEl('span', {
- className: 'vjs-seek-to-live-text',
- textContent: this.localize('LIVE')
- }, {
- 'aria-hidden': 'true'
- });
- el.appendChild(this.textEl_);
- return el;
- }
-
- /**
- * Update the state of this button if we are at the live edge
- * or not
- */
- updateLiveEdgeStatus() {
- // default to live edge
- if (!this.player_.liveTracker || this.player_.liveTracker.atLiveEdge()) {
- this.setAttribute('aria-disabled', true);
- this.addClass('vjs-at-live-edge');
- this.controlText('Seek to live, currently playing live');
- } else {
- this.setAttribute('aria-disabled', false);
- this.removeClass('vjs-at-live-edge');
- this.controlText('Seek to live, currently behind live');
- }
- }
-
- /**
- * On click bring us as near to the live point as possible.
- * This requires that we wait for the next `live-seekable-change`
- * event which will happen every segment length seconds.
- */
- handleClick() {
- this.player_.liveTracker.seekToLiveEdge();
- }
-
- /**
- * Dispose of the element and stop tracking
- */
- dispose() {
- if (this.player_.liveTracker) {
- this.off(this.player_.liveTracker, 'liveedgechange', this.updateLiveEdgeStatusHandler_);
- }
- this.textEl_ = null;
- super.dispose();
- }
- }
- /**
- * The text that should display over the `SeekToLive`s control. Added for localization.
- *
- * @type {string}
- * @protected
- */
- SeekToLive.prototype.controlText_ = 'Seek to live, currently playing live';
- Component$1.registerComponent('SeekToLive', SeekToLive);
-
- /**
- * @file num.js
- * @module num
- */
-
- /**
- * Keep a number between a min and a max value
- *
- * @param {number} number
- * The number to clamp
- *
- * @param {number} min
- * The minimum value
- * @param {number} max
- * The maximum value
- *
- * @return {number}
- * the clamped number
- */
- function clamp(number, min, max) {
- number = Number(number);
- return Math.min(max, Math.max(min, isNaN(number) ? min : number));
- }
-
- var Num = /*#__PURE__*/Object.freeze({
- __proto__: null,
- clamp: clamp
- });
-
- /**
- * @file slider.js
- */
-
- /**
- * The base functionality for a slider. Can be vertical or horizontal.
- * For instance the volume bar or the seek bar on a video is a slider.
- *
- * @extends Component
- */
- class Slider extends Component$1 {
- /**
- * Create an instance of this class
- *
- * @param { import('../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.handleMouseDown_ = e => this.handleMouseDown(e);
- this.handleMouseUp_ = e => this.handleMouseUp(e);
- this.handleKeyDown_ = e => this.handleKeyDown(e);
- this.handleClick_ = e => this.handleClick(e);
- this.handleMouseMove_ = e => this.handleMouseMove(e);
- this.update_ = e => this.update(e);
-
- // Set property names to bar to match with the child Slider class is looking for
- this.bar = this.getChild(this.options_.barName);
-
- // Set a horizontal or vertical class on the slider depending on the slider type
- this.vertical(!!this.options_.vertical);
- this.enable();
- }
-
- /**
- * Are controls are currently enabled for this slider or not.
- *
- * @return {boolean}
- * true if controls are enabled, false otherwise
- */
- enabled() {
- return this.enabled_;
- }
-
- /**
- * Enable controls for this slider if they are disabled
- */
- enable() {
- if (this.enabled()) {
- return;
- }
- this.on('mousedown', this.handleMouseDown_);
- this.on('touchstart', this.handleMouseDown_);
- this.on('keydown', this.handleKeyDown_);
- this.on('click', this.handleClick_);
-
- // TODO: deprecated, controlsvisible does not seem to be fired
- this.on(this.player_, 'controlsvisible', this.update);
- if (this.playerEvent) {
- this.on(this.player_, this.playerEvent, this.update);
- }
- this.removeClass('disabled');
- this.setAttribute('tabindex', 0);
- this.enabled_ = true;
- }
-
- /**
- * Disable controls for this slider if they are enabled
- */
- disable() {
- if (!this.enabled()) {
- return;
- }
- const doc = this.bar.el_.ownerDocument;
- this.off('mousedown', this.handleMouseDown_);
- this.off('touchstart', this.handleMouseDown_);
- this.off('keydown', this.handleKeyDown_);
- this.off('click', this.handleClick_);
- this.off(this.player_, 'controlsvisible', this.update_);
- this.off(doc, 'mousemove', this.handleMouseMove_);
- this.off(doc, 'mouseup', this.handleMouseUp_);
- this.off(doc, 'touchmove', this.handleMouseMove_);
- this.off(doc, 'touchend', this.handleMouseUp_);
- this.removeAttribute('tabindex');
- this.addClass('disabled');
- if (this.playerEvent) {
- this.off(this.player_, this.playerEvent, this.update);
- }
- this.enabled_ = false;
- }
-
- /**
- * Create the `Slider`s DOM element.
- *
- * @param {string} type
- * Type of element to create.
- *
- * @param {Object} [props={}]
- * List of properties in Object form.
- *
- * @param {Object} [attributes={}]
- * list of attributes in Object form.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl(type, props = {}, attributes = {}) {
- // Add the slider element class to all sub classes
- props.className = props.className + ' vjs-slider';
- props = Object.assign({
- tabIndex: 0
- }, props);
- attributes = Object.assign({
- 'role': 'slider',
- 'aria-valuenow': 0,
- 'aria-valuemin': 0,
- 'aria-valuemax': 100
- }, attributes);
- return super.createEl(type, props, attributes);
- }
-
- /**
- * Handle `mousedown` or `touchstart` events on the `Slider`.
- *
- * @param {MouseEvent} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousedown
- * @listens touchstart
- * @fires Slider#slideractive
- */
- handleMouseDown(event) {
- const doc = this.bar.el_.ownerDocument;
- if (event.type === 'mousedown') {
- event.preventDefault();
- }
- // Do not call preventDefault() on touchstart in Chrome
- // to avoid console warnings. Use a 'touch-action: none' style
- // instead to prevent unintended scrolling.
- // https://developers.google.com/web/updates/2017/01/scrolling-intervention
- if (event.type === 'touchstart' && !IS_CHROME) {
- event.preventDefault();
- }
- blockTextSelection();
- this.addClass('vjs-sliding');
- /**
- * Triggered when the slider is in an active state
- *
- * @event Slider#slideractive
- * @type {MouseEvent}
- */
- this.trigger('slideractive');
- this.on(doc, 'mousemove', this.handleMouseMove_);
- this.on(doc, 'mouseup', this.handleMouseUp_);
- this.on(doc, 'touchmove', this.handleMouseMove_);
- this.on(doc, 'touchend', this.handleMouseUp_);
- this.handleMouseMove(event, true);
- }
-
- /**
- * Handle the `mousemove`, `touchmove`, and `mousedown` events on this `Slider`.
- * The `mousemove` and `touchmove` events will only only trigger this function during
- * `mousedown` and `touchstart`. This is due to {@link Slider#handleMouseDown} and
- * {@link Slider#handleMouseUp}.
- *
- * @param {MouseEvent} event
- * `mousedown`, `mousemove`, `touchstart`, or `touchmove` event that triggered
- * this function
- * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false.
- *
- * @listens mousemove
- * @listens touchmove
- */
- handleMouseMove(event) {}
-
- /**
- * Handle `mouseup` or `touchend` events on the `Slider`.
- *
- * @param {MouseEvent} event
- * `mouseup` or `touchend` event that triggered this function.
- *
- * @listens touchend
- * @listens mouseup
- * @fires Slider#sliderinactive
- */
- handleMouseUp(event) {
- const doc = this.bar.el_.ownerDocument;
- unblockTextSelection();
- this.removeClass('vjs-sliding');
- /**
- * Triggered when the slider is no longer in an active state.
- *
- * @event Slider#sliderinactive
- * @type {Event}
- */
- this.trigger('sliderinactive');
- this.off(doc, 'mousemove', this.handleMouseMove_);
- this.off(doc, 'mouseup', this.handleMouseUp_);
- this.off(doc, 'touchmove', this.handleMouseMove_);
- this.off(doc, 'touchend', this.handleMouseUp_);
- this.update();
- }
-
- /**
- * Update the progress bar of the `Slider`.
- *
- * @return {number}
- * The percentage of progress the progress bar represents as a
- * number from 0 to 1.
- */
- update() {
- // In VolumeBar init we have a setTimeout for update that pops and update
- // to the end of the execution stack. The player is destroyed before then
- // update will cause an error
- // If there's no bar...
- if (!this.el_ || !this.bar) {
- return;
- }
-
- // clamp progress between 0 and 1
- // and only round to four decimal places, as we round to two below
- const progress = this.getProgress();
- if (progress === this.progress_) {
- return progress;
- }
- this.progress_ = progress;
- this.requestNamedAnimationFrame('Slider#update', () => {
- // Set the new bar width or height
- const sizeKey = this.vertical() ? 'height' : 'width';
-
- // Convert to a percentage for css value
- this.bar.el().style[sizeKey] = (progress * 100).toFixed(2) + '%';
- });
- return progress;
- }
-
- /**
- * Get the percentage of the bar that should be filled
- * but clamped and rounded.
- *
- * @return {number}
- * percentage filled that the slider is
- */
- getProgress() {
- return Number(clamp(this.getPercent(), 0, 1).toFixed(4));
- }
-
- /**
- * Calculate distance for slider
- *
- * @param {Event} event
- * The event that caused this function to run.
- *
- * @return {number}
- * The current position of the Slider.
- * - position.x for vertical `Slider`s
- * - position.y for horizontal `Slider`s
- */
- calculateDistance(event) {
- const position = getPointerPosition(this.el_, event);
- if (this.vertical()) {
- return position.y;
- }
- return position.x;
- }
-
- /**
- * Handle a `keydown` event on the `Slider`. Watches for left, right, up, and down
- * arrow keys. This function will only be called when the slider has focus. See
- * {@link Slider#handleFocus} and {@link Slider#handleBlur}.
- *
- * @param {KeyboardEvent} event
- * the `keydown` event that caused this function to run.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Left and Down Arrows
- if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {
- event.preventDefault();
- event.stopPropagation();
- this.stepBack();
-
- // Up and Right Arrows
- } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {
- event.preventDefault();
- event.stopPropagation();
- this.stepForward();
- } else {
- // Pass keydown handling up for unsupported keys
- super.handleKeyDown(event);
- }
- }
-
- /**
- * Listener for click events on slider, used to prevent clicks
- * from bubbling up to parent elements like button menus.
- *
- * @param {Object} event
- * Event that caused this object to run
- */
- handleClick(event) {
- event.stopPropagation();
- event.preventDefault();
- }
-
- /**
- * Get/set if slider is horizontal for vertical
- *
- * @param {boolean} [bool]
- * - true if slider is vertical,
- * - false is horizontal
- *
- * @return {boolean}
- * - true if slider is vertical, and getting
- * - false if the slider is horizontal, and getting
- */
- vertical(bool) {
- if (bool === undefined) {
- return this.vertical_ || false;
- }
- this.vertical_ = !!bool;
- if (this.vertical_) {
- this.addClass('vjs-slider-vertical');
- } else {
- this.addClass('vjs-slider-horizontal');
- }
- }
- }
- Component$1.registerComponent('Slider', Slider);
-
- /**
- * @file load-progress-bar.js
- */
-
- // get the percent width of a time compared to the total end
- const percentify = (time, end) => clamp(time / end * 100, 0, 100).toFixed(2) + '%';
-
- /**
- * Shows loading progress
- *
- * @extends Component
- */
- class LoadProgressBar extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.partEls_ = [];
- this.on(player, 'progress', e => this.update(e));
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl('div', {
- className: 'vjs-load-progress'
- });
- const wrapper = createEl('span', {
- className: 'vjs-control-text'
- });
- const loadedText = createEl('span', {
- textContent: this.localize('Loaded')
- });
- const separator = document.createTextNode(': ');
- this.percentageEl_ = createEl('span', {
- className: 'vjs-control-text-loaded-percentage',
- textContent: '0%'
- });
- el.appendChild(wrapper);
- wrapper.appendChild(loadedText);
- wrapper.appendChild(separator);
- wrapper.appendChild(this.percentageEl_);
- return el;
- }
- dispose() {
- this.partEls_ = null;
- this.percentageEl_ = null;
- super.dispose();
- }
-
- /**
- * Update progress bar
- *
- * @param {Event} [event]
- * The `progress` event that caused this function to run.
- *
- * @listens Player#progress
- */
- update(event) {
- this.requestNamedAnimationFrame('LoadProgressBar#update', () => {
- const liveTracker = this.player_.liveTracker;
- const buffered = this.player_.buffered();
- const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();
- const bufferedEnd = this.player_.bufferedEnd();
- const children = this.partEls_;
- const percent = percentify(bufferedEnd, duration);
- if (this.percent_ !== percent) {
- // update the width of the progress bar
- this.el_.style.width = percent;
- // update the control-text
- textContent(this.percentageEl_, percent);
- this.percent_ = percent;
- }
-
- // add child elements to represent the individual buffered time ranges
- for (let i = 0; i < buffered.length; i++) {
- const start = buffered.start(i);
- const end = buffered.end(i);
- let part = children[i];
- if (!part) {
- part = this.el_.appendChild(createEl());
- children[i] = part;
- }
-
- // only update if changed
- if (part.dataset.start === start && part.dataset.end === end) {
- continue;
- }
- part.dataset.start = start;
- part.dataset.end = end;
-
- // set the percent based on the width of the progress bar (bufferedEnd)
- part.style.left = percentify(start, bufferedEnd);
- part.style.width = percentify(end - start, bufferedEnd);
- }
-
- // remove unused buffered range elements
- for (let i = children.length; i > buffered.length; i--) {
- this.el_.removeChild(children[i - 1]);
- }
- children.length = buffered.length;
- });
- }
- }
- Component$1.registerComponent('LoadProgressBar', LoadProgressBar);
-
- /**
- * @file time-tooltip.js
- */
-
- /**
- * Time tooltips display a time above the progress bar.
- *
- * @extends Component
- */
- class TimeTooltip extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The {@link Player} that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
- }
-
- /**
- * Create the time tooltip DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-time-tooltip'
- }, {
- 'aria-hidden': 'true'
- });
- }
-
- /**
- * Updates the position of the time tooltip relative to the `SeekBar`.
- *
- * @param {Object} seekBarRect
- * The `ClientRect` for the {@link SeekBar} element.
- *
- * @param {number} seekBarPoint
- * A number from 0 to 1, representing a horizontal reference point
- * from the left edge of the {@link SeekBar}
- */
- update(seekBarRect, seekBarPoint, content) {
- const tooltipRect = findPosition(this.el_);
- const playerRect = getBoundingClientRect(this.player_.el());
- const seekBarPointPx = seekBarRect.width * seekBarPoint;
-
- // do nothing if either rect isn't available
- // for example, if the player isn't in the DOM for testing
- if (!playerRect || !tooltipRect) {
- return;
- }
-
- // This is the space left of the `seekBarPoint` available within the bounds
- // of the player. We calculate any gap between the left edge of the player
- // and the left edge of the `SeekBar` and add the number of pixels in the
- // `SeekBar` before hitting the `seekBarPoint`
- let spaceLeftOfPoint = seekBarRect.left - playerRect.left + seekBarPointPx;
-
- // This is the space right of the `seekBarPoint` available within the bounds
- // of the player. We calculate the number of pixels from the `seekBarPoint`
- // to the right edge of the `SeekBar` and add to that any gap between the
- // right edge of the `SeekBar` and the player.
- let spaceRightOfPoint = seekBarRect.width - seekBarPointPx + (playerRect.right - seekBarRect.right);
-
- // spaceRightOfPoint is always NaN for mouse time display
- // because the seekbarRect does not have a right property. This causes
- // the mouse tool tip to be truncated when it's close to the right edge of the player.
- // In such cases, we ignore the `playerRect.right - seekBarRect.right` value when calculating.
- // For the sake of consistency, we ignore seekBarRect.left - playerRect.left for the left edge.
- if (!spaceRightOfPoint) {
- spaceRightOfPoint = seekBarRect.width - seekBarPointPx;
- spaceLeftOfPoint = seekBarPointPx;
- }
- // This is the number of pixels by which the tooltip will need to be pulled
- // further to the right to center it over the `seekBarPoint`.
- let pullTooltipBy = tooltipRect.width / 2;
-
- // Adjust the `pullTooltipBy` distance to the left or right depending on
- // the results of the space calculations above.
- if (spaceLeftOfPoint < pullTooltipBy) {
- pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;
- } else if (spaceRightOfPoint < pullTooltipBy) {
- pullTooltipBy = spaceRightOfPoint;
- }
-
- // Due to the imprecision of decimal/ratio based calculations and varying
- // rounding behaviors, there are cases where the spacing adjustment is off
- // by a pixel or two. This adds insurance to these calculations.
- if (pullTooltipBy < 0) {
- pullTooltipBy = 0;
- } else if (pullTooltipBy > tooltipRect.width) {
- pullTooltipBy = tooltipRect.width;
- }
-
- // prevent small width fluctuations within 0.4px from
- // changing the value below.
- // This really helps for live to prevent the play
- // progress time tooltip from jittering
- pullTooltipBy = Math.round(pullTooltipBy);
- this.el_.style.right = `-${pullTooltipBy}px`;
- this.write(content);
- }
-
- /**
- * Write the time to the tooltip DOM element.
- *
- * @param {string} content
- * The formatted time for the tooltip.
- */
- write(content) {
- textContent(this.el_, content);
- }
-
- /**
- * Updates the position of the time tooltip relative to the `SeekBar`.
- *
- * @param {Object} seekBarRect
- * The `ClientRect` for the {@link SeekBar} element.
- *
- * @param {number} seekBarPoint
- * A number from 0 to 1, representing a horizontal reference point
- * from the left edge of the {@link SeekBar}
- *
- * @param {number} time
- * The time to update the tooltip to, not used during live playback
- *
- * @param {Function} cb
- * A function that will be called during the request animation frame
- * for tooltips that need to do additional animations from the default
- */
- updateTime(seekBarRect, seekBarPoint, time, cb) {
- this.requestNamedAnimationFrame('TimeTooltip#updateTime', () => {
- let content;
- const duration = this.player_.duration();
- if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {
- const liveWindow = this.player_.liveTracker.liveWindow();
- const secondsBehind = liveWindow - seekBarPoint * liveWindow;
- content = (secondsBehind < 1 ? '' : '-') + formatTime(secondsBehind, liveWindow);
- } else {
- content = formatTime(time, duration);
- }
- this.update(seekBarRect, seekBarPoint, content);
- if (cb) {
- cb();
- }
- });
- }
- }
- Component$1.registerComponent('TimeTooltip', TimeTooltip);
-
- /**
- * @file play-progress-bar.js
- */
-
- /**
- * Used by {@link SeekBar} to display media playback progress as part of the
- * {@link ProgressControl}.
- *
- * @extends Component
- */
- class PlayProgressBar extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The {@link Player} that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.setIcon('circle');
- this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
- }
-
- /**
- * Create the the DOM element for this class.
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-play-progress vjs-slider-bar'
- }, {
- 'aria-hidden': 'true'
- });
- }
-
- /**
- * Enqueues updates to its own DOM as well as the DOM of its
- * {@link TimeTooltip} child.
- *
- * @param {Object} seekBarRect
- * The `ClientRect` for the {@link SeekBar} element.
- *
- * @param {number} seekBarPoint
- * A number from 0 to 1, representing a horizontal reference point
- * from the left edge of the {@link SeekBar}
- */
- update(seekBarRect, seekBarPoint) {
- const timeTooltip = this.getChild('timeTooltip');
- if (!timeTooltip) {
- return;
- }
- const time = this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
- timeTooltip.updateTime(seekBarRect, seekBarPoint, time);
- }
- }
-
- /**
- * Default options for {@link PlayProgressBar}.
- *
- * @type {Object}
- * @private
- */
- PlayProgressBar.prototype.options_ = {
- children: []
- };
-
- // Time tooltips should not be added to a player on mobile devices
- if (!IS_IOS && !IS_ANDROID) {
- PlayProgressBar.prototype.options_.children.push('timeTooltip');
- }
- Component$1.registerComponent('PlayProgressBar', PlayProgressBar);
-
- /**
- * @file mouse-time-display.js
- */
-
- /**
- * The {@link MouseTimeDisplay} component tracks mouse movement over the
- * {@link ProgressControl}. It displays an indicator and a {@link TimeTooltip}
- * indicating the time which is represented by a given point in the
- * {@link ProgressControl}.
- *
- * @extends Component
- */
- class MouseTimeDisplay extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The {@link Player} that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
- }
-
- /**
- * Create the DOM element for this class.
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-mouse-display'
- });
- }
-
- /**
- * Enqueues updates to its own DOM as well as the DOM of its
- * {@link TimeTooltip} child.
- *
- * @param {Object} seekBarRect
- * The `ClientRect` for the {@link SeekBar} element.
- *
- * @param {number} seekBarPoint
- * A number from 0 to 1, representing a horizontal reference point
- * from the left edge of the {@link SeekBar}
- */
- update(seekBarRect, seekBarPoint) {
- const time = seekBarPoint * this.player_.duration();
- this.getChild('timeTooltip').updateTime(seekBarRect, seekBarPoint, time, () => {
- this.el_.style.left = `${seekBarRect.width * seekBarPoint}px`;
- });
- }
- }
-
- /**
- * Default options for `MouseTimeDisplay`
- *
- * @type {Object}
- * @private
- */
- MouseTimeDisplay.prototype.options_ = {
- children: ['timeTooltip']
- };
- Component$1.registerComponent('MouseTimeDisplay', MouseTimeDisplay);
-
- /**
- * @file seek-bar.js
- */
-
- // The number of seconds the `step*` functions move the timeline.
- const STEP_SECONDS = 5;
-
- // The multiplier of STEP_SECONDS that PgUp/PgDown move the timeline.
- const PAGE_KEY_MULTIPLIER = 12;
-
- /**
- * Seek bar and container for the progress bars. Uses {@link PlayProgressBar}
- * as its `bar`.
- *
- * @extends Slider
- */
- class SeekBar extends Slider {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.setEventHandlers_();
- }
-
- /**
- * Sets the event handlers
- *
- * @private
- */
- setEventHandlers_() {
- this.update_ = bind_(this, this.update);
- this.update = throttle(this.update_, UPDATE_REFRESH_INTERVAL);
- this.on(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);
- if (this.player_.liveTracker) {
- this.on(this.player_.liveTracker, 'liveedgechange', this.update);
- }
-
- // when playing, let's ensure we smoothly update the play progress bar
- // via an interval
- this.updateInterval = null;
- this.enableIntervalHandler_ = e => this.enableInterval_(e);
- this.disableIntervalHandler_ = e => this.disableInterval_(e);
- this.on(this.player_, ['playing'], this.enableIntervalHandler_);
- this.on(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);
-
- // we don't need to update the play progress if the document is hidden,
- // also, this causes the CPU to spike and eventually crash the page on IE11.
- if ('hidden' in document && 'visibilityState' in document) {
- this.on(document, 'visibilitychange', this.toggleVisibility_);
- }
- }
- toggleVisibility_(e) {
- if (document.visibilityState === 'hidden') {
- this.cancelNamedAnimationFrame('SeekBar#update');
- this.cancelNamedAnimationFrame('Slider#update');
- this.disableInterval_(e);
- } else {
- if (!this.player_.ended() && !this.player_.paused()) {
- this.enableInterval_();
- }
-
- // we just switched back to the page and someone may be looking, so, update ASAP
- this.update();
- }
- }
- enableInterval_() {
- if (this.updateInterval) {
- return;
- }
- this.updateInterval = this.setInterval(this.update, UPDATE_REFRESH_INTERVAL);
- }
- disableInterval_(e) {
- if (this.player_.liveTracker && this.player_.liveTracker.isLive() && e && e.type !== 'ended') {
- return;
- }
- if (!this.updateInterval) {
- return;
- }
- this.clearInterval(this.updateInterval);
- this.updateInterval = null;
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-progress-holder'
- }, {
- 'aria-label': this.localize('Progress Bar')
- });
- }
-
- /**
- * This function updates the play progress bar and accessibility
- * attributes to whatever is passed in.
- *
- * @param {Event} [event]
- * The `timeupdate` or `ended` event that caused this to run.
- *
- * @listens Player#timeupdate
- *
- * @return {number}
- * The current percent at a number from 0-1
- */
- update(event) {
- // ignore updates while the tab is hidden
- if (document.visibilityState === 'hidden') {
- return;
- }
- const percent = super.update();
- this.requestNamedAnimationFrame('SeekBar#update', () => {
- const currentTime = this.player_.ended() ? this.player_.duration() : this.getCurrentTime_();
- const liveTracker = this.player_.liveTracker;
- let duration = this.player_.duration();
- if (liveTracker && liveTracker.isLive()) {
- duration = this.player_.liveTracker.liveCurrentTime();
- }
- if (this.percent_ !== percent) {
- // machine readable value of progress bar (percentage complete)
- this.el_.setAttribute('aria-valuenow', (percent * 100).toFixed(2));
- this.percent_ = percent;
- }
- if (this.currentTime_ !== currentTime || this.duration_ !== duration) {
- // human readable value of progress bar (time complete)
- this.el_.setAttribute('aria-valuetext', this.localize('progress bar timing: currentTime={1} duration={2}', [formatTime(currentTime, duration), formatTime(duration, duration)], '{1} of {2}'));
- this.currentTime_ = currentTime;
- this.duration_ = duration;
- }
-
- // update the progress bar time tooltip with the current time
- if (this.bar) {
- this.bar.update(getBoundingClientRect(this.el()), this.getProgress());
- }
- });
- return percent;
- }
-
- /**
- * Prevent liveThreshold from causing seeks to seem like they
- * are not happening from a user perspective.
- *
- * @param {number} ct
- * current time to seek to
- */
- userSeek_(ct) {
- if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {
- this.player_.liveTracker.nextSeekedFromUser();
- }
- this.player_.currentTime(ct);
- }
-
- /**
- * Get the value of current time but allows for smooth scrubbing,
- * when player can't keep up.
- *
- * @return {number}
- * The current time value to display
- *
- * @private
- */
- getCurrentTime_() {
- return this.player_.scrubbing() ? this.player_.getCache().currentTime : this.player_.currentTime();
- }
-
- /**
- * Get the percentage of media played so far.
- *
- * @return {number}
- * The percentage of media played so far (0 to 1).
- */
- getPercent() {
- const currentTime = this.getCurrentTime_();
- let percent;
- const liveTracker = this.player_.liveTracker;
- if (liveTracker && liveTracker.isLive()) {
- percent = (currentTime - liveTracker.seekableStart()) / liveTracker.liveWindow();
-
- // prevent the percent from changing at the live edge
- if (liveTracker.atLiveEdge()) {
- percent = 1;
- }
- } else {
- percent = currentTime / this.player_.duration();
- }
- return percent;
- }
-
- /**
- * Handle mouse down on seek bar
- *
- * @param {MouseEvent} event
- * The `mousedown` event that caused this to run.
- *
- * @listens mousedown
- */
- handleMouseDown(event) {
- if (!isSingleLeftClick(event)) {
- return;
- }
-
- // Stop event propagation to prevent double fire in progress-control.js
- event.stopPropagation();
- this.videoWasPlaying = !this.player_.paused();
- this.player_.pause();
- super.handleMouseDown(event);
- }
-
- /**
- * Handle mouse move on seek bar
- *
- * @param {MouseEvent} event
- * The `mousemove` event that caused this to run.
- * @param {boolean} mouseDown this is a flag that should be set to true if `handleMouseMove` is called directly. It allows us to skip things that should not happen if coming from mouse down but should happen on regular mouse move handler. Defaults to false
- *
- * @listens mousemove
- */
- handleMouseMove(event, mouseDown = false) {
- if (!isSingleLeftClick(event) || isNaN(this.player_.duration())) {
- return;
- }
- if (!mouseDown && !this.player_.scrubbing()) {
- this.player_.scrubbing(true);
- }
- let newTime;
- const distance = this.calculateDistance(event);
- const liveTracker = this.player_.liveTracker;
- if (!liveTracker || !liveTracker.isLive()) {
- newTime = distance * this.player_.duration();
-
- // Don't let video end while scrubbing.
- if (newTime === this.player_.duration()) {
- newTime = newTime - 0.1;
- }
- } else {
- if (distance >= 0.99) {
- liveTracker.seekToLiveEdge();
- return;
- }
- const seekableStart = liveTracker.seekableStart();
- const seekableEnd = liveTracker.liveCurrentTime();
- newTime = seekableStart + distance * liveTracker.liveWindow();
-
- // Don't let video end while scrubbing.
- if (newTime >= seekableEnd) {
- newTime = seekableEnd;
- }
-
- // Compensate for precision differences so that currentTime is not less
- // than seekable start
- if (newTime <= seekableStart) {
- newTime = seekableStart + 0.1;
- }
-
- // On android seekableEnd can be Infinity sometimes,
- // this will cause newTime to be Infinity, which is
- // not a valid currentTime.
- if (newTime === Infinity) {
- return;
- }
- }
-
- // Set new time (tell player to seek to new time)
- this.userSeek_(newTime);
- if (this.player_.options_.enableSmoothSeeking) {
- this.update();
- }
- }
- enable() {
- super.enable();
- const mouseTimeDisplay = this.getChild('mouseTimeDisplay');
- if (!mouseTimeDisplay) {
- return;
- }
- mouseTimeDisplay.show();
- }
- disable() {
- super.disable();
- const mouseTimeDisplay = this.getChild('mouseTimeDisplay');
- if (!mouseTimeDisplay) {
- return;
- }
- mouseTimeDisplay.hide();
- }
-
- /**
- * Handle mouse up on seek bar
- *
- * @param {MouseEvent} event
- * The `mouseup` event that caused this to run.
- *
- * @listens mouseup
- */
- handleMouseUp(event) {
- super.handleMouseUp(event);
-
- // Stop event propagation to prevent double fire in progress-control.js
- if (event) {
- event.stopPropagation();
- }
- this.player_.scrubbing(false);
-
- /**
- * Trigger timeupdate because we're done seeking and the time has changed.
- * This is particularly useful for if the player is paused to time the time displays.
- *
- * @event Tech#timeupdate
- * @type {Event}
- */
- this.player_.trigger({
- type: 'timeupdate',
- target: this,
- manuallyTriggered: true
- });
- if (this.videoWasPlaying) {
- silencePromise(this.player_.play());
- } else {
- // We're done seeking and the time has changed.
- // If the player is paused, make sure we display the correct time on the seek bar.
- this.update_();
- }
- }
-
- /**
- * Move more quickly fast forward for keyboard-only users
- */
- stepForward() {
- this.userSeek_(this.player_.currentTime() + STEP_SECONDS);
- }
-
- /**
- * Move more quickly rewind for keyboard-only users
- */
- stepBack() {
- this.userSeek_(this.player_.currentTime() - STEP_SECONDS);
- }
-
- /**
- * Toggles the playback state of the player
- * This gets called when enter or space is used on the seekbar
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called
- *
- */
- handleAction(event) {
- if (this.player_.paused()) {
- this.player_.play();
- } else {
- this.player_.pause();
- }
- }
-
- /**
- * Called when this SeekBar has focus and a key gets pressed down.
- * Supports the following keys:
- *
- * Space or Enter key fire a click event
- * Home key moves to start of the timeline
- * End key moves to end of the timeline
- * Digit "0" through "9" keys move to 0%, 10% ... 80%, 90% of the timeline
- * PageDown key moves back a larger step than ArrowDown
- * PageUp key moves forward a large step
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- const liveTracker = this.player_.liveTracker;
- if (keycode.isEventKey(event, 'Space') || keycode.isEventKey(event, 'Enter')) {
- event.preventDefault();
- event.stopPropagation();
- this.handleAction(event);
- } else if (keycode.isEventKey(event, 'Home')) {
- event.preventDefault();
- event.stopPropagation();
- this.userSeek_(0);
- } else if (keycode.isEventKey(event, 'End')) {
- event.preventDefault();
- event.stopPropagation();
- if (liveTracker && liveTracker.isLive()) {
- this.userSeek_(liveTracker.liveCurrentTime());
- } else {
- this.userSeek_(this.player_.duration());
- }
- } else if (/^[0-9]$/.test(keycode(event))) {
- event.preventDefault();
- event.stopPropagation();
- const gotoFraction = (keycode.codes[keycode(event)] - keycode.codes['0']) * 10.0 / 100.0;
- if (liveTracker && liveTracker.isLive()) {
- this.userSeek_(liveTracker.seekableStart() + liveTracker.liveWindow() * gotoFraction);
- } else {
- this.userSeek_(this.player_.duration() * gotoFraction);
- }
- } else if (keycode.isEventKey(event, 'PgDn')) {
- event.preventDefault();
- event.stopPropagation();
- this.userSeek_(this.player_.currentTime() - STEP_SECONDS * PAGE_KEY_MULTIPLIER);
- } else if (keycode.isEventKey(event, 'PgUp')) {
- event.preventDefault();
- event.stopPropagation();
- this.userSeek_(this.player_.currentTime() + STEP_SECONDS * PAGE_KEY_MULTIPLIER);
- } else {
- // Pass keydown handling up for unsupported keys
- super.handleKeyDown(event);
- }
- }
- dispose() {
- this.disableInterval_();
- this.off(this.player_, ['ended', 'durationchange', 'timeupdate'], this.update);
- if (this.player_.liveTracker) {
- this.off(this.player_.liveTracker, 'liveedgechange', this.update);
- }
- this.off(this.player_, ['playing'], this.enableIntervalHandler_);
- this.off(this.player_, ['ended', 'pause', 'waiting'], this.disableIntervalHandler_);
-
- // we don't need to update the play progress if the document is hidden,
- // also, this causes the CPU to spike and eventually crash the page on IE11.
- if ('hidden' in document && 'visibilityState' in document) {
- this.off(document, 'visibilitychange', this.toggleVisibility_);
- }
- super.dispose();
- }
- }
-
- /**
- * Default options for the `SeekBar`
- *
- * @type {Object}
- * @private
- */
- SeekBar.prototype.options_ = {
- children: ['loadProgressBar', 'playProgressBar'],
- barName: 'playProgressBar'
- };
-
- // MouseTimeDisplay tooltips should not be added to a player on mobile devices
- if (!IS_IOS && !IS_ANDROID) {
- SeekBar.prototype.options_.children.splice(1, 0, 'mouseTimeDisplay');
- }
- Component$1.registerComponent('SeekBar', SeekBar);
-
- /**
- * @file progress-control.js
- */
-
- /**
- * The Progress Control component contains the seek bar, load progress,
- * and play progress.
- *
- * @extends Component
- */
- class ProgressControl extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.handleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);
- this.throttledHandleMouseSeek = throttle(bind_(this, this.handleMouseSeek), UPDATE_REFRESH_INTERVAL);
- this.handleMouseUpHandler_ = e => this.handleMouseUp(e);
- this.handleMouseDownHandler_ = e => this.handleMouseDown(e);
- this.enable();
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-progress-control vjs-control'
- });
- }
-
- /**
- * When the mouse moves over the `ProgressControl`, the pointer position
- * gets passed down to the `MouseTimeDisplay` component.
- *
- * @param {Event} event
- * The `mousemove` event that caused this function to run.
- *
- * @listen mousemove
- */
- handleMouseMove(event) {
- const seekBar = this.getChild('seekBar');
- if (!seekBar) {
- return;
- }
- const playProgressBar = seekBar.getChild('playProgressBar');
- const mouseTimeDisplay = seekBar.getChild('mouseTimeDisplay');
- if (!playProgressBar && !mouseTimeDisplay) {
- return;
- }
- const seekBarEl = seekBar.el();
- const seekBarRect = findPosition(seekBarEl);
- let seekBarPoint = getPointerPosition(seekBarEl, event).x;
-
- // The default skin has a gap on either side of the `SeekBar`. This means
- // that it's possible to trigger this behavior outside the boundaries of
- // the `SeekBar`. This ensures we stay within it at all times.
- seekBarPoint = clamp(seekBarPoint, 0, 1);
- if (mouseTimeDisplay) {
- mouseTimeDisplay.update(seekBarRect, seekBarPoint);
- }
- if (playProgressBar) {
- playProgressBar.update(seekBarRect, seekBar.getProgress());
- }
- }
-
- /**
- * A throttled version of the {@link ProgressControl#handleMouseSeek} listener.
- *
- * @method ProgressControl#throttledHandleMouseSeek
- * @param {Event} event
- * The `mousemove` event that caused this function to run.
- *
- * @listen mousemove
- * @listen touchmove
- */
-
- /**
- * Handle `mousemove` or `touchmove` events on the `ProgressControl`.
- *
- * @param {Event} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousemove
- * @listens touchmove
- */
- handleMouseSeek(event) {
- const seekBar = this.getChild('seekBar');
- if (seekBar) {
- seekBar.handleMouseMove(event);
- }
- }
-
- /**
- * Are controls are currently enabled for this progress control.
- *
- * @return {boolean}
- * true if controls are enabled, false otherwise
- */
- enabled() {
- return this.enabled_;
- }
-
- /**
- * Disable all controls on the progress control and its children
- */
- disable() {
- this.children().forEach(child => child.disable && child.disable());
- if (!this.enabled()) {
- return;
- }
- this.off(['mousedown', 'touchstart'], this.handleMouseDownHandler_);
- this.off(this.el_, 'mousemove', this.handleMouseMove);
- this.removeListenersAddedOnMousedownAndTouchstart();
- this.addClass('disabled');
- this.enabled_ = false;
-
- // Restore normal playback state if controls are disabled while scrubbing
- if (this.player_.scrubbing()) {
- const seekBar = this.getChild('seekBar');
- this.player_.scrubbing(false);
- if (seekBar.videoWasPlaying) {
- silencePromise(this.player_.play());
- }
- }
- }
-
- /**
- * Enable all controls on the progress control and its children
- */
- enable() {
- this.children().forEach(child => child.enable && child.enable());
- if (this.enabled()) {
- return;
- }
- this.on(['mousedown', 'touchstart'], this.handleMouseDownHandler_);
- this.on(this.el_, 'mousemove', this.handleMouseMove);
- this.removeClass('disabled');
- this.enabled_ = true;
- }
-
- /**
- * Cleanup listeners after the user finishes interacting with the progress controls
- */
- removeListenersAddedOnMousedownAndTouchstart() {
- const doc = this.el_.ownerDocument;
- this.off(doc, 'mousemove', this.throttledHandleMouseSeek);
- this.off(doc, 'touchmove', this.throttledHandleMouseSeek);
- this.off(doc, 'mouseup', this.handleMouseUpHandler_);
- this.off(doc, 'touchend', this.handleMouseUpHandler_);
- }
-
- /**
- * Handle `mousedown` or `touchstart` events on the `ProgressControl`.
- *
- * @param {Event} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousedown
- * @listens touchstart
- */
- handleMouseDown(event) {
- const doc = this.el_.ownerDocument;
- const seekBar = this.getChild('seekBar');
- if (seekBar) {
- seekBar.handleMouseDown(event);
- }
- this.on(doc, 'mousemove', this.throttledHandleMouseSeek);
- this.on(doc, 'touchmove', this.throttledHandleMouseSeek);
- this.on(doc, 'mouseup', this.handleMouseUpHandler_);
- this.on(doc, 'touchend', this.handleMouseUpHandler_);
- }
-
- /**
- * Handle `mouseup` or `touchend` events on the `ProgressControl`.
- *
- * @param {Event} event
- * `mouseup` or `touchend` event that triggered this function.
- *
- * @listens touchend
- * @listens mouseup
- */
- handleMouseUp(event) {
- const seekBar = this.getChild('seekBar');
- if (seekBar) {
- seekBar.handleMouseUp(event);
- }
- this.removeListenersAddedOnMousedownAndTouchstart();
- }
- }
-
- /**
- * Default options for `ProgressControl`
- *
- * @type {Object}
- * @private
- */
- ProgressControl.prototype.options_ = {
- children: ['seekBar']
- };
- Component$1.registerComponent('ProgressControl', ProgressControl);
-
- /**
- * @file picture-in-picture-toggle.js
- */
-
- /**
- * Toggle Picture-in-Picture mode
- *
- * @extends Button
- */
- class PictureInPictureToggle extends Button {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @listens Player#enterpictureinpicture
- * @listens Player#leavepictureinpicture
- */
- constructor(player, options) {
- super(player, options);
- this.setIcon('picture-in-picture-enter');
- this.on(player, ['enterpictureinpicture', 'leavepictureinpicture'], e => this.handlePictureInPictureChange(e));
- this.on(player, ['disablepictureinpicturechanged', 'loadedmetadata'], e => this.handlePictureInPictureEnabledChange(e));
- this.on(player, ['loadedmetadata', 'audioonlymodechange', 'audiopostermodechange'], () => this.handlePictureInPictureAudioModeChange());
-
- // TODO: Deactivate button on player emptied event.
- this.disable();
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-picture-in-picture-control vjs-hidden ${super.buildCSSClass()}`;
- }
-
- /**
- * Displays or hides the button depending on the audio mode detection.
- * Exits picture-in-picture if it is enabled when switching to audio mode.
- */
- handlePictureInPictureAudioModeChange() {
- // This audio detection will not detect HLS or DASH audio-only streams because there was no reliable way to detect them at the time
- const isSourceAudio = this.player_.currentType().substring(0, 5) === 'audio';
- const isAudioMode = isSourceAudio || this.player_.audioPosterMode() || this.player_.audioOnlyMode();
- if (!isAudioMode) {
- this.show();
- return;
- }
- if (this.player_.isInPictureInPicture()) {
- this.player_.exitPictureInPicture();
- }
- this.hide();
- }
-
- /**
- * Enables or disables button based on availability of a Picture-In-Picture mode.
- *
- * Enabled if
- * - `player.options().enableDocumentPictureInPicture` is true and
- * window.documentPictureInPicture is available; or
- * - `player.disablePictureInPicture()` is false and
- * element.requestPictureInPicture is available
- */
- handlePictureInPictureEnabledChange() {
- if (document.pictureInPictureEnabled && this.player_.disablePictureInPicture() === false || this.player_.options_.enableDocumentPictureInPicture && 'documentPictureInPicture' in window) {
- this.enable();
- } else {
- this.disable();
- }
- }
-
- /**
- * Handles enterpictureinpicture and leavepictureinpicture on the player and change control text accordingly.
- *
- * @param {Event} [event]
- * The {@link Player#enterpictureinpicture} or {@link Player#leavepictureinpicture} event that caused this function to be
- * called.
- *
- * @listens Player#enterpictureinpicture
- * @listens Player#leavepictureinpicture
- */
- handlePictureInPictureChange(event) {
- if (this.player_.isInPictureInPicture()) {
- this.setIcon('picture-in-picture-exit');
- this.controlText('Exit Picture-in-Picture');
- } else {
- this.setIcon('picture-in-picture-enter');
- this.controlText('Picture-in-Picture');
- }
- this.handlePictureInPictureEnabledChange();
- }
-
- /**
- * This gets called when an `PictureInPictureToggle` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- if (!this.player_.isInPictureInPicture()) {
- this.player_.requestPictureInPicture();
- } else {
- this.player_.exitPictureInPicture();
- }
- }
-
- /**
- * Show the `Component`s element if it is hidden by removing the
- * 'vjs-hidden' class name from it only in browsers that support the Picture-in-Picture API.
- */
- show() {
- // Does not allow to display the pictureInPictureToggle in browsers that do not support the Picture-in-Picture API, e.g. Firefox.
- if (typeof document.exitPictureInPicture !== 'function') {
- return;
- }
- super.show();
- }
- }
-
- /**
- * The text that should display over the `PictureInPictureToggle`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- PictureInPictureToggle.prototype.controlText_ = 'Picture-in-Picture';
- Component$1.registerComponent('PictureInPictureToggle', PictureInPictureToggle);
-
- /**
- * @file fullscreen-toggle.js
- */
-
- /**
- * Toggle fullscreen video
- *
- * @extends Button
- */
- class FullscreenToggle extends Button {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.setIcon('fullscreen-enter');
- this.on(player, 'fullscreenchange', e => this.handleFullscreenChange(e));
- if (document[player.fsApi_.fullscreenEnabled] === false) {
- this.disable();
- }
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-fullscreen-control ${super.buildCSSClass()}`;
- }
-
- /**
- * Handles fullscreenchange on the player and change control text accordingly.
- *
- * @param {Event} [event]
- * The {@link Player#fullscreenchange} event that caused this function to be
- * called.
- *
- * @listens Player#fullscreenchange
- */
- handleFullscreenChange(event) {
- if (this.player_.isFullscreen()) {
- this.controlText('Exit Fullscreen');
- this.setIcon('fullscreen-exit');
- } else {
- this.controlText('Fullscreen');
- this.setIcon('fullscreen-enter');
- }
- }
-
- /**
- * This gets called when an `FullscreenToggle` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- if (!this.player_.isFullscreen()) {
- this.player_.requestFullscreen();
- } else {
- this.player_.exitFullscreen();
- }
- }
- }
-
- /**
- * The text that should display over the `FullscreenToggle`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- FullscreenToggle.prototype.controlText_ = 'Fullscreen';
- Component$1.registerComponent('FullscreenToggle', FullscreenToggle);
-
- /**
- * Check if volume control is supported and if it isn't hide the
- * `Component` that was passed using the `vjs-hidden` class.
- *
- * @param { import('../../component').default } self
- * The component that should be hidden if volume is unsupported
- *
- * @param { import('../../player').default } player
- * A reference to the player
- *
- * @private
- */
- const checkVolumeSupport = function (self, player) {
- // hide volume controls when they're not supported by the current tech
- if (player.tech_ && !player.tech_.featuresVolumeControl) {
- self.addClass('vjs-hidden');
- }
- self.on(player, 'loadstart', function () {
- if (!player.tech_.featuresVolumeControl) {
- self.addClass('vjs-hidden');
- } else {
- self.removeClass('vjs-hidden');
- }
- });
- };
-
- /**
- * @file volume-level.js
- */
-
- /**
- * Shows volume level
- *
- * @extends Component
- */
- class VolumeLevel extends Component$1 {
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl('div', {
- className: 'vjs-volume-level'
- });
- this.setIcon('circle', el);
- el.appendChild(super.createEl('span', {
- className: 'vjs-control-text'
- }));
- return el;
- }
- }
- Component$1.registerComponent('VolumeLevel', VolumeLevel);
-
- /**
- * @file volume-level-tooltip.js
- */
-
- /**
- * Volume level tooltips display a volume above or side by side the volume bar.
- *
- * @extends Component
- */
- class VolumeLevelTooltip extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The {@link Player} that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
- }
-
- /**
- * Create the volume tooltip DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-volume-tooltip'
- }, {
- 'aria-hidden': 'true'
- });
- }
-
- /**
- * Updates the position of the tooltip relative to the `VolumeBar` and
- * its content text.
- *
- * @param {Object} rangeBarRect
- * The `ClientRect` for the {@link VolumeBar} element.
- *
- * @param {number} rangeBarPoint
- * A number from 0 to 1, representing a horizontal/vertical reference point
- * from the left edge of the {@link VolumeBar}
- *
- * @param {boolean} vertical
- * Referees to the Volume control position
- * in the control bar{@link VolumeControl}
- *
- */
- update(rangeBarRect, rangeBarPoint, vertical, content) {
- if (!vertical) {
- const tooltipRect = getBoundingClientRect(this.el_);
- const playerRect = getBoundingClientRect(this.player_.el());
- const volumeBarPointPx = rangeBarRect.width * rangeBarPoint;
- if (!playerRect || !tooltipRect) {
- return;
- }
- const spaceLeftOfPoint = rangeBarRect.left - playerRect.left + volumeBarPointPx;
- const spaceRightOfPoint = rangeBarRect.width - volumeBarPointPx + (playerRect.right - rangeBarRect.right);
- let pullTooltipBy = tooltipRect.width / 2;
- if (spaceLeftOfPoint < pullTooltipBy) {
- pullTooltipBy += pullTooltipBy - spaceLeftOfPoint;
- } else if (spaceRightOfPoint < pullTooltipBy) {
- pullTooltipBy = spaceRightOfPoint;
- }
- if (pullTooltipBy < 0) {
- pullTooltipBy = 0;
- } else if (pullTooltipBy > tooltipRect.width) {
- pullTooltipBy = tooltipRect.width;
- }
- this.el_.style.right = `-${pullTooltipBy}px`;
- }
- this.write(`${content}%`);
- }
-
- /**
- * Write the volume to the tooltip DOM element.
- *
- * @param {string} content
- * The formatted volume for the tooltip.
- */
- write(content) {
- textContent(this.el_, content);
- }
-
- /**
- * Updates the position of the volume tooltip relative to the `VolumeBar`.
- *
- * @param {Object} rangeBarRect
- * The `ClientRect` for the {@link VolumeBar} element.
- *
- * @param {number} rangeBarPoint
- * A number from 0 to 1, representing a horizontal/vertical reference point
- * from the left edge of the {@link VolumeBar}
- *
- * @param {boolean} vertical
- * Referees to the Volume control position
- * in the control bar{@link VolumeControl}
- *
- * @param {number} volume
- * The volume level to update the tooltip to
- *
- * @param {Function} cb
- * A function that will be called during the request animation frame
- * for tooltips that need to do additional animations from the default
- */
- updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, cb) {
- this.requestNamedAnimationFrame('VolumeLevelTooltip#updateVolume', () => {
- this.update(rangeBarRect, rangeBarPoint, vertical, volume.toFixed(0));
- if (cb) {
- cb();
- }
- });
- }
- }
- Component$1.registerComponent('VolumeLevelTooltip', VolumeLevelTooltip);
-
- /**
- * @file mouse-volume-level-display.js
- */
-
- /**
- * The {@link MouseVolumeLevelDisplay} component tracks mouse movement over the
- * {@link VolumeControl}. It displays an indicator and a {@link VolumeLevelTooltip}
- * indicating the volume level which is represented by a given point in the
- * {@link VolumeBar}.
- *
- * @extends Component
- */
- class MouseVolumeLevelDisplay extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The {@link Player} that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.update = throttle(bind_(this, this.update), UPDATE_REFRESH_INTERVAL);
- }
-
- /**
- * Create the DOM element for this class.
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-mouse-display'
- });
- }
-
- /**
- * Enquires updates to its own DOM as well as the DOM of its
- * {@link VolumeLevelTooltip} child.
- *
- * @param {Object} rangeBarRect
- * The `ClientRect` for the {@link VolumeBar} element.
- *
- * @param {number} rangeBarPoint
- * A number from 0 to 1, representing a horizontal/vertical reference point
- * from the left edge of the {@link VolumeBar}
- *
- * @param {boolean} vertical
- * Referees to the Volume control position
- * in the control bar{@link VolumeControl}
- *
- */
- update(rangeBarRect, rangeBarPoint, vertical) {
- const volume = 100 * rangeBarPoint;
- this.getChild('volumeLevelTooltip').updateVolume(rangeBarRect, rangeBarPoint, vertical, volume, () => {
- if (vertical) {
- this.el_.style.bottom = `${rangeBarRect.height * rangeBarPoint}px`;
- } else {
- this.el_.style.left = `${rangeBarRect.width * rangeBarPoint}px`;
- }
- });
- }
- }
-
- /**
- * Default options for `MouseVolumeLevelDisplay`
- *
- * @type {Object}
- * @private
- */
- MouseVolumeLevelDisplay.prototype.options_ = {
- children: ['volumeLevelTooltip']
- };
- Component$1.registerComponent('MouseVolumeLevelDisplay', MouseVolumeLevelDisplay);
-
- /**
- * @file volume-bar.js
- */
-
- /**
- * The bar that contains the volume level and can be clicked on to adjust the level
- *
- * @extends Slider
- */
- class VolumeBar extends Slider {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.on('slideractive', e => this.updateLastVolume_(e));
- this.on(player, 'volumechange', e => this.updateARIAAttributes(e));
- player.ready(() => this.updateARIAAttributes());
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-volume-bar vjs-slider-bar'
- }, {
- 'aria-label': this.localize('Volume Level'),
- 'aria-live': 'polite'
- });
- }
-
- /**
- * Handle mouse down on volume bar
- *
- * @param {Event} event
- * The `mousedown` event that caused this to run.
- *
- * @listens mousedown
- */
- handleMouseDown(event) {
- if (!isSingleLeftClick(event)) {
- return;
- }
- super.handleMouseDown(event);
- }
-
- /**
- * Handle movement events on the {@link VolumeMenuButton}.
- *
- * @param {Event} event
- * The event that caused this function to run.
- *
- * @listens mousemove
- */
- handleMouseMove(event) {
- const mouseVolumeLevelDisplay = this.getChild('mouseVolumeLevelDisplay');
- if (mouseVolumeLevelDisplay) {
- const volumeBarEl = this.el();
- const volumeBarRect = getBoundingClientRect(volumeBarEl);
- const vertical = this.vertical();
- let volumeBarPoint = getPointerPosition(volumeBarEl, event);
- volumeBarPoint = vertical ? volumeBarPoint.y : volumeBarPoint.x;
- // The default skin has a gap on either side of the `VolumeBar`. This means
- // that it's possible to trigger this behavior outside the boundaries of
- // the `VolumeBar`. This ensures we stay within it at all times.
- volumeBarPoint = clamp(volumeBarPoint, 0, 1);
- mouseVolumeLevelDisplay.update(volumeBarRect, volumeBarPoint, vertical);
- }
- if (!isSingleLeftClick(event)) {
- return;
- }
- this.checkMuted();
- this.player_.volume(this.calculateDistance(event));
- }
-
- /**
- * If the player is muted unmute it.
- */
- checkMuted() {
- if (this.player_.muted()) {
- this.player_.muted(false);
- }
- }
-
- /**
- * Get percent of volume level
- *
- * @return {number}
- * Volume level percent as a decimal number.
- */
- getPercent() {
- if (this.player_.muted()) {
- return 0;
- }
- return this.player_.volume();
- }
-
- /**
- * Increase volume level for keyboard users
- */
- stepForward() {
- this.checkMuted();
- this.player_.volume(this.player_.volume() + 0.1);
- }
-
- /**
- * Decrease volume level for keyboard users
- */
- stepBack() {
- this.checkMuted();
- this.player_.volume(this.player_.volume() - 0.1);
- }
-
- /**
- * Update ARIA accessibility attributes
- *
- * @param {Event} [event]
- * The `volumechange` event that caused this function to run.
- *
- * @listens Player#volumechange
- */
- updateARIAAttributes(event) {
- const ariaValue = this.player_.muted() ? 0 : this.volumeAsPercentage_();
- this.el_.setAttribute('aria-valuenow', ariaValue);
- this.el_.setAttribute('aria-valuetext', ariaValue + '%');
- }
-
- /**
- * Returns the current value of the player volume as a percentage
- *
- * @private
- */
- volumeAsPercentage_() {
- return Math.round(this.player_.volume() * 100);
- }
-
- /**
- * When user starts dragging the VolumeBar, store the volume and listen for
- * the end of the drag. When the drag ends, if the volume was set to zero,
- * set lastVolume to the stored volume.
- *
- * @listens slideractive
- * @private
- */
- updateLastVolume_() {
- const volumeBeforeDrag = this.player_.volume();
- this.one('sliderinactive', () => {
- if (this.player_.volume() === 0) {
- this.player_.lastVolume_(volumeBeforeDrag);
- }
- });
- }
- }
-
- /**
- * Default options for the `VolumeBar`
- *
- * @type {Object}
- * @private
- */
- VolumeBar.prototype.options_ = {
- children: ['volumeLevel'],
- barName: 'volumeLevel'
- };
-
- // MouseVolumeLevelDisplay tooltip should not be added to a player on mobile devices
- if (!IS_IOS && !IS_ANDROID) {
- VolumeBar.prototype.options_.children.splice(0, 0, 'mouseVolumeLevelDisplay');
- }
-
- /**
- * Call the update event for this Slider when this event happens on the player.
- *
- * @type {string}
- */
- VolumeBar.prototype.playerEvent = 'volumechange';
- Component$1.registerComponent('VolumeBar', VolumeBar);
-
- /**
- * @file volume-control.js
- */
-
- /**
- * The component for controlling the volume level
- *
- * @extends Component
- */
- class VolumeControl extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- options.vertical = options.vertical || false;
-
- // Pass the vertical option down to the VolumeBar if
- // the VolumeBar is turned on.
- if (typeof options.volumeBar === 'undefined' || isPlain(options.volumeBar)) {
- options.volumeBar = options.volumeBar || {};
- options.volumeBar.vertical = options.vertical;
- }
- super(player, options);
-
- // hide this control if volume support is missing
- checkVolumeSupport(this, player);
- this.throttledHandleMouseMove = throttle(bind_(this, this.handleMouseMove), UPDATE_REFRESH_INTERVAL);
- this.handleMouseUpHandler_ = e => this.handleMouseUp(e);
- this.on('mousedown', e => this.handleMouseDown(e));
- this.on('touchstart', e => this.handleMouseDown(e));
- this.on('mousemove', e => this.handleMouseMove(e));
-
- // while the slider is active (the mouse has been pressed down and
- // is dragging) or in focus we do not want to hide the VolumeBar
- this.on(this.volumeBar, ['focus', 'slideractive'], () => {
- this.volumeBar.addClass('vjs-slider-active');
- this.addClass('vjs-slider-active');
- this.trigger('slideractive');
- });
- this.on(this.volumeBar, ['blur', 'sliderinactive'], () => {
- this.volumeBar.removeClass('vjs-slider-active');
- this.removeClass('vjs-slider-active');
- this.trigger('sliderinactive');
- });
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- let orientationClass = 'vjs-volume-horizontal';
- if (this.options_.vertical) {
- orientationClass = 'vjs-volume-vertical';
- }
- return super.createEl('div', {
- className: `vjs-volume-control vjs-control ${orientationClass}`
- });
- }
-
- /**
- * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
- *
- * @param {Event} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousedown
- * @listens touchstart
- */
- handleMouseDown(event) {
- const doc = this.el_.ownerDocument;
- this.on(doc, 'mousemove', this.throttledHandleMouseMove);
- this.on(doc, 'touchmove', this.throttledHandleMouseMove);
- this.on(doc, 'mouseup', this.handleMouseUpHandler_);
- this.on(doc, 'touchend', this.handleMouseUpHandler_);
- }
-
- /**
- * Handle `mouseup` or `touchend` events on the `VolumeControl`.
- *
- * @param {Event} event
- * `mouseup` or `touchend` event that triggered this function.
- *
- * @listens touchend
- * @listens mouseup
- */
- handleMouseUp(event) {
- const doc = this.el_.ownerDocument;
- this.off(doc, 'mousemove', this.throttledHandleMouseMove);
- this.off(doc, 'touchmove', this.throttledHandleMouseMove);
- this.off(doc, 'mouseup', this.handleMouseUpHandler_);
- this.off(doc, 'touchend', this.handleMouseUpHandler_);
- }
-
- /**
- * Handle `mousedown` or `touchstart` events on the `VolumeControl`.
- *
- * @param {Event} event
- * `mousedown` or `touchstart` event that triggered this function
- *
- * @listens mousedown
- * @listens touchstart
- */
- handleMouseMove(event) {
- this.volumeBar.handleMouseMove(event);
- }
- }
-
- /**
- * Default options for the `VolumeControl`
- *
- * @type {Object}
- * @private
- */
- VolumeControl.prototype.options_ = {
- children: ['volumeBar']
- };
- Component$1.registerComponent('VolumeControl', VolumeControl);
-
- /**
- * Check if muting volume is supported and if it isn't hide the mute toggle
- * button.
- *
- * @param { import('../../component').default } self
- * A reference to the mute toggle button
- *
- * @param { import('../../player').default } player
- * A reference to the player
- *
- * @private
- */
- const checkMuteSupport = function (self, player) {
- // hide mute toggle button if it's not supported by the current tech
- if (player.tech_ && !player.tech_.featuresMuteControl) {
- self.addClass('vjs-hidden');
- }
- self.on(player, 'loadstart', function () {
- if (!player.tech_.featuresMuteControl) {
- self.addClass('vjs-hidden');
- } else {
- self.removeClass('vjs-hidden');
- }
- });
- };
-
- /**
- * @file mute-toggle.js
- */
-
- /**
- * A button component for muting the audio.
- *
- * @extends Button
- */
- class MuteToggle extends Button {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
-
- // hide this control if volume support is missing
- checkMuteSupport(this, player);
- this.on(player, ['loadstart', 'volumechange'], e => this.update(e));
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-mute-control ${super.buildCSSClass()}`;
- }
-
- /**
- * This gets called when an `MuteToggle` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- const vol = this.player_.volume();
- const lastVolume = this.player_.lastVolume_();
- if (vol === 0) {
- const volumeToSet = lastVolume < 0.1 ? 0.1 : lastVolume;
- this.player_.volume(volumeToSet);
- this.player_.muted(false);
- } else {
- this.player_.muted(this.player_.muted() ? false : true);
- }
- }
-
- /**
- * Update the `MuteToggle` button based on the state of `volume` and `muted`
- * on the player.
- *
- * @param {Event} [event]
- * The {@link Player#loadstart} event if this function was called
- * through an event.
- *
- * @listens Player#loadstart
- * @listens Player#volumechange
- */
- update(event) {
- this.updateIcon_();
- this.updateControlText_();
- }
-
- /**
- * Update the appearance of the `MuteToggle` icon.
- *
- * Possible states (given `level` variable below):
- * - 0: crossed out
- * - 1: zero bars of volume
- * - 2: one bar of volume
- * - 3: two bars of volume
- *
- * @private
- */
- updateIcon_() {
- const vol = this.player_.volume();
- let level = 3;
- this.setIcon('volume-high');
-
- // in iOS when a player is loaded with muted attribute
- // and volume is changed with a native mute button
- // we want to make sure muted state is updated
- if (IS_IOS && this.player_.tech_ && this.player_.tech_.el_) {
- this.player_.muted(this.player_.tech_.el_.muted);
- }
- if (vol === 0 || this.player_.muted()) {
- this.setIcon('volume-mute');
- level = 0;
- } else if (vol < 0.33) {
- this.setIcon('volume-low');
- level = 1;
- } else if (vol < 0.67) {
- this.setIcon('volume-medium');
- level = 2;
- }
- removeClass(this.el_, [0, 1, 2, 3].reduce((str, i) => str + `${i ? ' ' : ''}vjs-vol-${i}`, ''));
- addClass(this.el_, `vjs-vol-${level}`);
- }
-
- /**
- * If `muted` has changed on the player, update the control text
- * (`title` attribute on `vjs-mute-control` element and content of
- * `vjs-control-text` element).
- *
- * @private
- */
- updateControlText_() {
- const soundOff = this.player_.muted() || this.player_.volume() === 0;
- const text = soundOff ? 'Unmute' : 'Mute';
- if (this.controlText() !== text) {
- this.controlText(text);
- }
- }
- }
-
- /**
- * The text that should display over the `MuteToggle`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- MuteToggle.prototype.controlText_ = 'Mute';
- Component$1.registerComponent('MuteToggle', MuteToggle);
-
- /**
- * @file volume-control.js
- */
-
- /**
- * A Component to contain the MuteToggle and VolumeControl so that
- * they can work together.
- *
- * @extends Component
- */
- class VolumePanel extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- if (typeof options.inline !== 'undefined') {
- options.inline = options.inline;
- } else {
- options.inline = true;
- }
-
- // pass the inline option down to the VolumeControl as vertical if
- // the VolumeControl is on.
- if (typeof options.volumeControl === 'undefined' || isPlain(options.volumeControl)) {
- options.volumeControl = options.volumeControl || {};
- options.volumeControl.vertical = !options.inline;
- }
- super(player, options);
-
- // this handler is used by mouse handler methods below
- this.handleKeyPressHandler_ = e => this.handleKeyPress(e);
- this.on(player, ['loadstart'], e => this.volumePanelState_(e));
- this.on(this.muteToggle, 'keyup', e => this.handleKeyPress(e));
- this.on(this.volumeControl, 'keyup', e => this.handleVolumeControlKeyUp(e));
- this.on('keydown', e => this.handleKeyPress(e));
- this.on('mouseover', e => this.handleMouseOver(e));
- this.on('mouseout', e => this.handleMouseOut(e));
-
- // while the slider is active (the mouse has been pressed down and
- // is dragging) we do not want to hide the VolumeBar
- this.on(this.volumeControl, ['slideractive'], this.sliderActive_);
- this.on(this.volumeControl, ['sliderinactive'], this.sliderInactive_);
- }
-
- /**
- * Add vjs-slider-active class to the VolumePanel
- *
- * @listens VolumeControl#slideractive
- * @private
- */
- sliderActive_() {
- this.addClass('vjs-slider-active');
- }
-
- /**
- * Removes vjs-slider-active class to the VolumePanel
- *
- * @listens VolumeControl#sliderinactive
- * @private
- */
- sliderInactive_() {
- this.removeClass('vjs-slider-active');
- }
-
- /**
- * Adds vjs-hidden or vjs-mute-toggle-only to the VolumePanel
- * depending on MuteToggle and VolumeControl state
- *
- * @listens Player#loadstart
- * @private
- */
- volumePanelState_() {
- // hide volume panel if neither volume control or mute toggle
- // are displayed
- if (this.volumeControl.hasClass('vjs-hidden') && this.muteToggle.hasClass('vjs-hidden')) {
- this.addClass('vjs-hidden');
- }
-
- // if only mute toggle is visible we don't want
- // volume panel expanding when hovered or active
- if (this.volumeControl.hasClass('vjs-hidden') && !this.muteToggle.hasClass('vjs-hidden')) {
- this.addClass('vjs-mute-toggle-only');
- }
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- let orientationClass = 'vjs-volume-panel-horizontal';
- if (!this.options_.inline) {
- orientationClass = 'vjs-volume-panel-vertical';
- }
- return super.createEl('div', {
- className: `vjs-volume-panel vjs-control ${orientationClass}`
- });
- }
-
- /**
- * Dispose of the `volume-panel` and all child components.
- */
- dispose() {
- this.handleMouseOut();
- super.dispose();
- }
-
- /**
- * Handles `keyup` events on the `VolumeControl`, looking for ESC, which closes
- * the volume panel and sets focus on `MuteToggle`.
- *
- * @param {Event} event
- * The `keyup` event that caused this function to be called.
- *
- * @listens keyup
- */
- handleVolumeControlKeyUp(event) {
- if (keycode.isEventKey(event, 'Esc')) {
- this.muteToggle.focus();
- }
- }
-
- /**
- * This gets called when a `VolumePanel` gains hover via a `mouseover` event.
- * Turns on listening for `mouseover` event. When they happen it
- * calls `this.handleMouseOver`.
- *
- * @param {Event} event
- * The `mouseover` event that caused this function to be called.
- *
- * @listens mouseover
- */
- handleMouseOver(event) {
- this.addClass('vjs-hover');
- on(document, 'keyup', this.handleKeyPressHandler_);
- }
-
- /**
- * This gets called when a `VolumePanel` gains hover via a `mouseout` event.
- * Turns on listening for `mouseout` event. When they happen it
- * calls `this.handleMouseOut`.
- *
- * @param {Event} event
- * The `mouseout` event that caused this function to be called.
- *
- * @listens mouseout
- */
- handleMouseOut(event) {
- this.removeClass('vjs-hover');
- off(document, 'keyup', this.handleKeyPressHandler_);
- }
-
- /**
- * Handles `keyup` event on the document or `keydown` event on the `VolumePanel`,
- * looking for ESC, which hides the `VolumeControl`.
- *
- * @param {Event} event
- * The keypress that triggered this event.
- *
- * @listens keydown | keyup
- */
- handleKeyPress(event) {
- if (keycode.isEventKey(event, 'Esc')) {
- this.handleMouseOut();
- }
- }
- }
-
- /**
- * Default options for the `VolumeControl`
- *
- * @type {Object}
- * @private
- */
- VolumePanel.prototype.options_ = {
- children: ['muteToggle', 'volumeControl']
- };
- Component$1.registerComponent('VolumePanel', VolumePanel);
-
- /**
- * Button to skip forward a configurable amount of time
- * through a video. Renders in the control bar.
- *
- * e.g. options: {controlBar: {skipButtons: forward: 5}}
- *
- * @extends Button
- */
- class SkipForward extends Button {
- constructor(player, options) {
- super(player, options);
- this.validOptions = [5, 10, 30];
- this.skipTime = this.getSkipForwardTime();
- if (this.skipTime && this.validOptions.includes(this.skipTime)) {
- this.setIcon(`forward-${this.skipTime}`);
- this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime.toLocaleString(player.language())]));
- this.show();
- } else {
- this.hide();
- }
- }
- getSkipForwardTime() {
- const playerOptions = this.options_.playerOptions;
- return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.forward;
- }
- buildCSSClass() {
- return `vjs-skip-forward-${this.getSkipForwardTime()} ${super.buildCSSClass()}`;
- }
-
- /**
- * On click, skips forward in the duration/seekable range by a configurable amount of seconds.
- * If the time left in the duration/seekable range is less than the configured 'skip forward' time,
- * skips to end of duration/seekable range.
- *
- * Handle a click on a `SkipForward` button
- *
- * @param {EventTarget~Event} event
- * The `click` event that caused this function
- * to be called
- */
- handleClick(event) {
- if (isNaN(this.player_.duration())) {
- return;
- }
- const currentVideoTime = this.player_.currentTime();
- const liveTracker = this.player_.liveTracker;
- const duration = liveTracker && liveTracker.isLive() ? liveTracker.seekableEnd() : this.player_.duration();
- let newTime;
- if (currentVideoTime + this.skipTime <= duration) {
- newTime = currentVideoTime + this.skipTime;
- } else {
- newTime = duration;
- }
- this.player_.currentTime(newTime);
- }
-
- /**
- * Update control text on languagechange
- */
- handleLanguagechange() {
- this.controlText(this.localize('Skip forward {1} seconds', [this.skipTime]));
- }
- }
- SkipForward.prototype.controlText_ = 'Skip Forward';
- Component$1.registerComponent('SkipForward', SkipForward);
-
- /**
- * Button to skip backward a configurable amount of time
- * through a video. Renders in the control bar.
- *
- * * e.g. options: {controlBar: {skipButtons: backward: 5}}
- *
- * @extends Button
- */
- class SkipBackward extends Button {
- constructor(player, options) {
- super(player, options);
- this.validOptions = [5, 10, 30];
- this.skipTime = this.getSkipBackwardTime();
- if (this.skipTime && this.validOptions.includes(this.skipTime)) {
- this.setIcon(`replay-${this.skipTime}`);
- this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime.toLocaleString(player.language())]));
- this.show();
- } else {
- this.hide();
- }
- }
- getSkipBackwardTime() {
- const playerOptions = this.options_.playerOptions;
- return playerOptions.controlBar && playerOptions.controlBar.skipButtons && playerOptions.controlBar.skipButtons.backward;
- }
- buildCSSClass() {
- return `vjs-skip-backward-${this.getSkipBackwardTime()} ${super.buildCSSClass()}`;
- }
-
- /**
- * On click, skips backward in the video by a configurable amount of seconds.
- * If the current time in the video is less than the configured 'skip backward' time,
- * skips to beginning of video or seekable range.
- *
- * Handle a click on a `SkipBackward` button
- *
- * @param {EventTarget~Event} event
- * The `click` event that caused this function
- * to be called
- */
- handleClick(event) {
- const currentVideoTime = this.player_.currentTime();
- const liveTracker = this.player_.liveTracker;
- const seekableStart = liveTracker && liveTracker.isLive() && liveTracker.seekableStart();
- let newTime;
- if (seekableStart && currentVideoTime - this.skipTime <= seekableStart) {
- newTime = seekableStart;
- } else if (currentVideoTime >= this.skipTime) {
- newTime = currentVideoTime - this.skipTime;
- } else {
- newTime = 0;
- }
- this.player_.currentTime(newTime);
- }
-
- /**
- * Update control text on languagechange
- */
- handleLanguagechange() {
- this.controlText(this.localize('Skip backward {1} seconds', [this.skipTime]));
- }
- }
- SkipBackward.prototype.controlText_ = 'Skip Backward';
- Component$1.registerComponent('SkipBackward', SkipBackward);
-
- /**
- * @file menu.js
- */
-
- /**
- * The Menu component is used to build popup menus, including subtitle and
- * captions selection menus.
- *
- * @extends Component
- */
- class Menu extends Component$1 {
- /**
- * Create an instance of this class.
- *
- * @param { import('../player').default } player
- * the player that this component should attach to
- *
- * @param {Object} [options]
- * Object of option names and values
- *
- */
- constructor(player, options) {
- super(player, options);
- if (options) {
- this.menuButton_ = options.menuButton;
- }
- this.focusedChild_ = -1;
- this.on('keydown', e => this.handleKeyDown(e));
-
- // All the menu item instances share the same blur handler provided by the menu container.
- this.boundHandleBlur_ = e => this.handleBlur(e);
- this.boundHandleTapClick_ = e => this.handleTapClick(e);
- }
-
- /**
- * Add event listeners to the {@link MenuItem}.
- *
- * @param {Object} component
- * The instance of the `MenuItem` to add listeners to.
- *
- */
- addEventListenerForItem(component) {
- if (!(component instanceof Component$1)) {
- return;
- }
- this.on(component, 'blur', this.boundHandleBlur_);
- this.on(component, ['tap', 'click'], this.boundHandleTapClick_);
- }
-
- /**
- * Remove event listeners from the {@link MenuItem}.
- *
- * @param {Object} component
- * The instance of the `MenuItem` to remove listeners.
- *
- */
- removeEventListenerForItem(component) {
- if (!(component instanceof Component$1)) {
- return;
- }
- this.off(component, 'blur', this.boundHandleBlur_);
- this.off(component, ['tap', 'click'], this.boundHandleTapClick_);
- }
-
- /**
- * This method will be called indirectly when the component has been added
- * before the component adds to the new menu instance by `addItem`.
- * In this case, the original menu instance will remove the component
- * by calling `removeChild`.
- *
- * @param {Object} component
- * The instance of the `MenuItem`
- */
- removeChild(component) {
- if (typeof component === 'string') {
- component = this.getChild(component);
- }
- this.removeEventListenerForItem(component);
- super.removeChild(component);
- }
-
- /**
- * Add a {@link MenuItem} to the menu.
- *
- * @param {Object|string} component
- * The name or instance of the `MenuItem` to add.
- *
- */
- addItem(component) {
- const childComponent = this.addChild(component);
- if (childComponent) {
- this.addEventListenerForItem(childComponent);
- }
- }
-
- /**
- * Create the `Menu`s DOM element.
- *
- * @return {Element}
- * the element that was created
- */
- createEl() {
- const contentElType = this.options_.contentElType || 'ul';
- this.contentEl_ = createEl(contentElType, {
- className: 'vjs-menu-content'
- });
- this.contentEl_.setAttribute('role', 'menu');
- const el = super.createEl('div', {
- append: this.contentEl_,
- className: 'vjs-menu'
- });
- el.appendChild(this.contentEl_);
-
- // Prevent clicks from bubbling up. Needed for Menu Buttons,
- // where a click on the parent is significant
- on(el, 'click', function (event) {
- event.preventDefault();
- event.stopImmediatePropagation();
- });
- return el;
- }
- dispose() {
- this.contentEl_ = null;
- this.boundHandleBlur_ = null;
- this.boundHandleTapClick_ = null;
- super.dispose();
- }
-
- /**
- * Called when a `MenuItem` loses focus.
- *
- * @param {Event} event
- * The `blur` event that caused this function to be called.
- *
- * @listens blur
- */
- handleBlur(event) {
- const relatedTarget = event.relatedTarget || document.activeElement;
-
- // Close menu popup when a user clicks outside the menu
- if (!this.children().some(element => {
- return element.el() === relatedTarget;
- })) {
- const btn = this.menuButton_;
- if (btn && btn.buttonPressed_ && relatedTarget !== btn.el().firstChild) {
- btn.unpressButton();
- }
- }
- }
-
- /**
- * Called when a `MenuItem` gets clicked or tapped.
- *
- * @param {Event} event
- * The `click` or `tap` event that caused this function to be called.
- *
- * @listens click,tap
- */
- handleTapClick(event) {
- // Unpress the associated MenuButton, and move focus back to it
- if (this.menuButton_) {
- this.menuButton_.unpressButton();
- const childComponents = this.children();
- if (!Array.isArray(childComponents)) {
- return;
- }
- const foundComponent = childComponents.filter(component => component.el() === event.target)[0];
- if (!foundComponent) {
- return;
- }
-
- // don't focus menu button if item is a caption settings item
- // because focus will move elsewhere
- if (foundComponent.name() !== 'CaptionSettingsMenuItem') {
- this.menuButton_.focus();
- }
- }
- }
-
- /**
- * Handle a `keydown` event on this menu. This listener is added in the constructor.
- *
- * @param {KeyboardEvent} event
- * A `keydown` event that happened on the menu.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Left and Down Arrows
- if (keycode.isEventKey(event, 'Left') || keycode.isEventKey(event, 'Down')) {
- event.preventDefault();
- event.stopPropagation();
- this.stepForward();
-
- // Up and Right Arrows
- } else if (keycode.isEventKey(event, 'Right') || keycode.isEventKey(event, 'Up')) {
- event.preventDefault();
- event.stopPropagation();
- this.stepBack();
- }
- }
-
- /**
- * Move to next (lower) menu item for keyboard users.
- */
- stepForward() {
- let stepChild = 0;
- if (this.focusedChild_ !== undefined) {
- stepChild = this.focusedChild_ + 1;
- }
- this.focus(stepChild);
- }
-
- /**
- * Move to previous (higher) menu item for keyboard users.
- */
- stepBack() {
- let stepChild = 0;
- if (this.focusedChild_ !== undefined) {
- stepChild = this.focusedChild_ - 1;
- }
- this.focus(stepChild);
- }
-
- /**
- * Set focus on a {@link MenuItem} in the `Menu`.
- *
- * @param {Object|string} [item=0]
- * Index of child item set focus on.
- */
- focus(item = 0) {
- const children = this.children().slice();
- const haveTitle = children.length && children[0].hasClass('vjs-menu-title');
- if (haveTitle) {
- children.shift();
- }
- if (children.length > 0) {
- if (item < 0) {
- item = 0;
- } else if (item >= children.length) {
- item = children.length - 1;
- }
- this.focusedChild_ = item;
- children[item].el_.focus();
- }
- }
- }
- Component$1.registerComponent('Menu', Menu);
-
- /**
- * @file menu-button.js
- */
-
- /**
- * A `MenuButton` class for any popup {@link Menu}.
- *
- * @extends Component
- */
- class MenuButton extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- super(player, options);
- this.menuButton_ = new Button(player, options);
- this.menuButton_.controlText(this.controlText_);
- this.menuButton_.el_.setAttribute('aria-haspopup', 'true');
-
- // Add buildCSSClass values to the button, not the wrapper
- const buttonClass = Button.prototype.buildCSSClass();
- this.menuButton_.el_.className = this.buildCSSClass() + ' ' + buttonClass;
- this.menuButton_.removeClass('vjs-control');
- this.addChild(this.menuButton_);
- this.update();
- this.enabled_ = true;
- const handleClick = e => this.handleClick(e);
- this.handleMenuKeyUp_ = e => this.handleMenuKeyUp(e);
- this.on(this.menuButton_, 'tap', handleClick);
- this.on(this.menuButton_, 'click', handleClick);
- this.on(this.menuButton_, 'keydown', e => this.handleKeyDown(e));
- this.on(this.menuButton_, 'mouseenter', () => {
- this.addClass('vjs-hover');
- this.menu.show();
- on(document, 'keyup', this.handleMenuKeyUp_);
- });
- this.on('mouseleave', e => this.handleMouseLeave(e));
- this.on('keydown', e => this.handleSubmenuKeyDown(e));
- }
-
- /**
- * Update the menu based on the current state of its items.
- */
- update() {
- const menu = this.createMenu();
- if (this.menu) {
- this.menu.dispose();
- this.removeChild(this.menu);
- }
- this.menu = menu;
- this.addChild(menu);
-
- /**
- * Track the state of the menu button
- *
- * @type {Boolean}
- * @private
- */
- this.buttonPressed_ = false;
- this.menuButton_.el_.setAttribute('aria-expanded', 'false');
- if (this.items && this.items.length <= this.hideThreshold_) {
- this.hide();
- this.menu.contentEl_.removeAttribute('role');
- } else {
- this.show();
- this.menu.contentEl_.setAttribute('role', 'menu');
- }
- }
-
- /**
- * Create the menu and add all items to it.
- *
- * @return {Menu}
- * The constructed menu
- */
- createMenu() {
- const menu = new Menu(this.player_, {
- menuButton: this
- });
-
- /**
- * Hide the menu if the number of items is less than or equal to this threshold. This defaults
- * to 0 and whenever we add items which can be hidden to the menu we'll increment it. We list
- * it here because every time we run `createMenu` we need to reset the value.
- *
- * @protected
- * @type {Number}
- */
- this.hideThreshold_ = 0;
-
- // Add a title list item to the top
- if (this.options_.title) {
- const titleEl = createEl('li', {
- className: 'vjs-menu-title',
- textContent: toTitleCase$1(this.options_.title),
- tabIndex: -1
- });
- const titleComponent = new Component$1(this.player_, {
- el: titleEl
- });
- menu.addItem(titleComponent);
- }
- this.items = this.createItems();
- if (this.items) {
- // Add menu items to the menu
- for (let i = 0; i < this.items.length; i++) {
- menu.addItem(this.items[i]);
- }
- }
- return menu;
- }
-
- /**
- * Create the list of menu items. Specific to each subclass.
- *
- * @abstract
- */
- createItems() {}
-
- /**
- * Create the `MenuButtons`s DOM element.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl() {
- return super.createEl('div', {
- className: this.buildWrapperCSSClass()
- }, {});
- }
-
- /**
- * Overwrites the `setIcon` method from `Component`.
- * In this case, we want the icon to be appended to the menuButton.
- *
- * @param {string} name
- * The icon name to be added.
- */
- setIcon(name) {
- super.setIcon(name, this.menuButton_.el_);
- }
-
- /**
- * Allow sub components to stack CSS class names for the wrapper element
- *
- * @return {string}
- * The constructed wrapper DOM `className`
- */
- buildWrapperCSSClass() {
- let menuButtonClass = 'vjs-menu-button';
-
- // If the inline option is passed, we want to use different styles altogether.
- if (this.options_.inline === true) {
- menuButtonClass += '-inline';
- } else {
- menuButtonClass += '-popup';
- }
-
- // TODO: Fix the CSS so that this isn't necessary
- const buttonClass = Button.prototype.buildCSSClass();
- return `vjs-menu-button ${menuButtonClass} ${buttonClass} ${super.buildCSSClass()}`;
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- let menuButtonClass = 'vjs-menu-button';
-
- // If the inline option is passed, we want to use different styles altogether.
- if (this.options_.inline === true) {
- menuButtonClass += '-inline';
- } else {
- menuButtonClass += '-popup';
- }
- return `vjs-menu-button ${menuButtonClass} ${super.buildCSSClass()}`;
- }
-
- /**
- * Get or set the localized control text that will be used for accessibility.
- *
- * > NOTE: This will come from the internal `menuButton_` element.
- *
- * @param {string} [text]
- * Control text for element.
- *
- * @param {Element} [el=this.menuButton_.el()]
- * Element to set the title on.
- *
- * @return {string}
- * - The control text when getting
- */
- controlText(text, el = this.menuButton_.el()) {
- return this.menuButton_.controlText(text, el);
- }
-
- /**
- * Dispose of the `menu-button` and all child components.
- */
- dispose() {
- this.handleMouseLeave();
- super.dispose();
- }
-
- /**
- * Handle a click on a `MenuButton`.
- * See {@link ClickableComponent#handleClick} for instances where this is called.
- *
- * @param {Event} event
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- if (this.buttonPressed_) {
- this.unpressButton();
- } else {
- this.pressButton();
- }
- }
-
- /**
- * Handle `mouseleave` for `MenuButton`.
- *
- * @param {Event} event
- * The `mouseleave` event that caused this function to be called.
- *
- * @listens mouseleave
- */
- handleMouseLeave(event) {
- this.removeClass('vjs-hover');
- off(document, 'keyup', this.handleMenuKeyUp_);
- }
-
- /**
- * Set the focus to the actual button, not to this element
- */
- focus() {
- this.menuButton_.focus();
- }
-
- /**
- * Remove the focus from the actual button, not this element
- */
- blur() {
- this.menuButton_.blur();
- }
-
- /**
- * Handle tab, escape, down arrow, and up arrow keys for `MenuButton`. See
- * {@link ClickableComponent#handleKeyDown} for instances where this is called.
- *
- * @param {Event} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- // Escape or Tab unpress the 'button'
- if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
- if (this.buttonPressed_) {
- this.unpressButton();
- }
-
- // Don't preventDefault for Tab key - we still want to lose focus
- if (!keycode.isEventKey(event, 'Tab')) {
- event.preventDefault();
- // Set focus back to the menu button's button
- this.menuButton_.focus();
- }
- // Up Arrow or Down Arrow also 'press' the button to open the menu
- } else if (keycode.isEventKey(event, 'Up') || keycode.isEventKey(event, 'Down')) {
- if (!this.buttonPressed_) {
- event.preventDefault();
- this.pressButton();
- }
- }
- }
-
- /**
- * Handle a `keyup` event on a `MenuButton`. The listener for this is added in
- * the constructor.
- *
- * @param {Event} event
- * Key press event
- *
- * @listens keyup
- */
- handleMenuKeyUp(event) {
- // Escape hides popup menu
- if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
- this.removeClass('vjs-hover');
- }
- }
-
- /**
- * This method name now delegates to `handleSubmenuKeyDown`. This means
- * anyone calling `handleSubmenuKeyPress` will not see their method calls
- * stop working.
- *
- * @param {Event} event
- * The event that caused this function to be called.
- */
- handleSubmenuKeyPress(event) {
- this.handleSubmenuKeyDown(event);
- }
-
- /**
- * Handle a `keydown` event on a sub-menu. The listener for this is added in
- * the constructor.
- *
- * @param {Event} event
- * Key press event
- *
- * @listens keydown
- */
- handleSubmenuKeyDown(event) {
- // Escape or Tab unpress the 'button'
- if (keycode.isEventKey(event, 'Esc') || keycode.isEventKey(event, 'Tab')) {
- if (this.buttonPressed_) {
- this.unpressButton();
- }
- // Don't preventDefault for Tab key - we still want to lose focus
- if (!keycode.isEventKey(event, 'Tab')) {
- event.preventDefault();
- // Set focus back to the menu button's button
- this.menuButton_.focus();
- }
- }
- }
-
- /**
- * Put the current `MenuButton` into a pressed state.
- */
- pressButton() {
- if (this.enabled_) {
- this.buttonPressed_ = true;
- this.menu.show();
- this.menu.lockShowing();
- this.menuButton_.el_.setAttribute('aria-expanded', 'true');
-
- // set the focus into the submenu, except on iOS where it is resulting in
- // undesired scrolling behavior when the player is in an iframe
- if (IS_IOS && isInFrame()) {
- // Return early so that the menu isn't focused
- return;
- }
- this.menu.focus();
- }
- }
-
- /**
- * Take the current `MenuButton` out of a pressed state.
- */
- unpressButton() {
- if (this.enabled_) {
- this.buttonPressed_ = false;
- this.menu.unlockShowing();
- this.menu.hide();
- this.menuButton_.el_.setAttribute('aria-expanded', 'false');
- }
- }
-
- /**
- * Disable the `MenuButton`. Don't allow it to be clicked.
- */
- disable() {
- this.unpressButton();
- this.enabled_ = false;
- this.addClass('vjs-disabled');
- this.menuButton_.disable();
- }
-
- /**
- * Enable the `MenuButton`. Allow it to be clicked.
- */
- enable() {
- this.enabled_ = true;
- this.removeClass('vjs-disabled');
- this.menuButton_.enable();
- }
- }
- Component$1.registerComponent('MenuButton', MenuButton);
-
- /**
- * @file track-button.js
- */
-
- /**
- * The base class for buttons that toggle specific track types (e.g. subtitles).
- *
- * @extends MenuButton
- */
- class TrackButton extends MenuButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- const tracks = options.tracks;
- super(player, options);
- if (this.items.length <= 1) {
- this.hide();
- }
- if (!tracks) {
- return;
- }
- const updateHandler = bind_(this, this.update);
- tracks.addEventListener('removetrack', updateHandler);
- tracks.addEventListener('addtrack', updateHandler);
- tracks.addEventListener('labelchange', updateHandler);
- this.player_.on('ready', updateHandler);
- this.player_.on('dispose', function () {
- tracks.removeEventListener('removetrack', updateHandler);
- tracks.removeEventListener('addtrack', updateHandler);
- tracks.removeEventListener('labelchange', updateHandler);
- });
- }
- }
- Component$1.registerComponent('TrackButton', TrackButton);
-
- /**
- * @file menu-keys.js
- */
-
- /**
- * All keys used for operation of a menu (`MenuButton`, `Menu`, and `MenuItem`)
- * Note that 'Enter' and 'Space' are not included here (otherwise they would
- * prevent the `MenuButton` and `MenuItem` from being keyboard-clickable)
- *
- * @typedef MenuKeys
- * @array
- */
- const MenuKeys = ['Tab', 'Esc', 'Up', 'Down', 'Right', 'Left'];
-
- /**
- * @file menu-item.js
- */
-
- /**
- * The component for a menu item. `<li>`
- *
- * @extends ClickableComponent
- */
- class MenuItem extends ClickableComponent {
- /**
- * Creates an instance of the this class.
- *
- * @param { import('../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- *
- */
- constructor(player, options) {
- super(player, options);
- this.selectable = options.selectable;
- this.isSelected_ = options.selected || false;
- this.multiSelectable = options.multiSelectable;
- this.selected(this.isSelected_);
- if (this.selectable) {
- if (this.multiSelectable) {
- this.el_.setAttribute('role', 'menuitemcheckbox');
- } else {
- this.el_.setAttribute('role', 'menuitemradio');
- }
- } else {
- this.el_.setAttribute('role', 'menuitem');
- }
- }
-
- /**
- * Create the `MenuItem's DOM element
- *
- * @param {string} [type=li]
- * Element's node type, not actually used, always set to `li`.
- *
- * @param {Object} [props={}]
- * An object of properties that should be set on the element
- *
- * @param {Object} [attrs={}]
- * An object of attributes that should be set on the element
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl(type, props, attrs) {
- // The control is textual, not just an icon
- this.nonIconControl = true;
- const el = super.createEl('li', Object.assign({
- className: 'vjs-menu-item',
- tabIndex: -1
- }, props), attrs);
-
- // swap icon with menu item text.
- const menuItemEl = createEl('span', {
- className: 'vjs-menu-item-text',
- textContent: this.localize(this.options_.label)
- });
-
- // If using SVG icons, the element with vjs-icon-placeholder will be added separately.
- if (this.player_.options_.experimentalSvgIcons) {
- el.appendChild(menuItemEl);
- } else {
- el.replaceChild(menuItemEl, el.querySelector('.vjs-icon-placeholder'));
- }
- return el;
- }
-
- /**
- * Ignore keys which are used by the menu, but pass any other ones up. See
- * {@link ClickableComponent#handleKeyDown} for instances where this is called.
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- if (!MenuKeys.some(key => keycode.isEventKey(event, key))) {
- // Pass keydown handling up for unused keys
- super.handleKeyDown(event);
- }
- }
-
- /**
- * Any click on a `MenuItem` puts it into the selected state.
- * See {@link ClickableComponent#handleClick} for instances where this is called.
- *
- * @param {Event} event
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- this.selected(true);
- }
-
- /**
- * Set the state for this menu item as selected or not.
- *
- * @param {boolean} selected
- * if the menu item is selected or not
- */
- selected(selected) {
- if (this.selectable) {
- if (selected) {
- this.addClass('vjs-selected');
- this.el_.setAttribute('aria-checked', 'true');
- // aria-checked isn't fully supported by browsers/screen readers,
- // so indicate selected state to screen reader in the control text.
- this.controlText(', selected');
- this.isSelected_ = true;
- } else {
- this.removeClass('vjs-selected');
- this.el_.setAttribute('aria-checked', 'false');
- // Indicate un-selected state to screen reader
- this.controlText('');
- this.isSelected_ = false;
- }
- }
- }
- }
- Component$1.registerComponent('MenuItem', MenuItem);
-
- /**
- * @file text-track-menu-item.js
- */
-
- /**
- * The specific menu item type for selecting a language within a text track kind
- *
- * @extends MenuItem
- */
- class TextTrackMenuItem extends MenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- const track = options.track;
- const tracks = player.textTracks();
-
- // Modify options for parent MenuItem class's init.
- options.label = track.label || track.language || 'Unknown';
- options.selected = track.mode === 'showing';
- super(player, options);
- this.track = track;
- // Determine the relevant kind(s) of tracks for this component and filter
- // out empty kinds.
- this.kinds = (options.kinds || [options.kind || this.track.kind]).filter(Boolean);
- const changeHandler = (...args) => {
- this.handleTracksChange.apply(this, args);
- };
- const selectedLanguageChangeHandler = (...args) => {
- this.handleSelectedLanguageChange.apply(this, args);
- };
- player.on(['loadstart', 'texttrackchange'], changeHandler);
- tracks.addEventListener('change', changeHandler);
- tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
- this.on('dispose', function () {
- player.off(['loadstart', 'texttrackchange'], changeHandler);
- tracks.removeEventListener('change', changeHandler);
- tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
- });
-
- // iOS7 doesn't dispatch change events to TextTrackLists when an
- // associated track's mode changes. Without something like
- // Object.observe() (also not present on iOS7), it's not
- // possible to detect changes to the mode attribute and polyfill
- // the change event. As a poor substitute, we manually dispatch
- // change events whenever the controls modify the mode.
- if (tracks.onchange === undefined) {
- let event;
- this.on(['tap', 'click'], function () {
- if (typeof window.Event !== 'object') {
- // Android 2.3 throws an Illegal Constructor error for window.Event
- try {
- event = new window.Event('change');
- } catch (err) {
- // continue regardless of error
- }
- }
- if (!event) {
- event = document.createEvent('Event');
- event.initEvent('change', true, true);
- }
- tracks.dispatchEvent(event);
- });
- }
-
- // set the default state based on current tracks
- this.handleTracksChange();
- }
-
- /**
- * This gets called when an `TextTrackMenuItem` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} event
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- const referenceTrack = this.track;
- const tracks = this.player_.textTracks();
- super.handleClick(event);
- if (!tracks) {
- return;
- }
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
-
- // If the track from the text tracks list is not of the right kind,
- // skip it. We do not want to affect tracks of incompatible kind(s).
- if (this.kinds.indexOf(track.kind) === -1) {
- continue;
- }
-
- // If this text track is the component's track and it is not showing,
- // set it to showing.
- if (track === referenceTrack) {
- if (track.mode !== 'showing') {
- track.mode = 'showing';
- }
-
- // If this text track is not the component's track and it is not
- // disabled, set it to disabled.
- } else if (track.mode !== 'disabled') {
- track.mode = 'disabled';
- }
- }
- }
-
- /**
- * Handle text track list change
- *
- * @param {Event} event
- * The `change` event that caused this function to be called.
- *
- * @listens TextTrackList#change
- */
- handleTracksChange(event) {
- const shouldBeSelected = this.track.mode === 'showing';
-
- // Prevent redundant selected() calls because they may cause
- // screen readers to read the appended control text unnecessarily
- if (shouldBeSelected !== this.isSelected_) {
- this.selected(shouldBeSelected);
- }
- }
- handleSelectedLanguageChange(event) {
- if (this.track.mode === 'showing') {
- const selectedLanguage = this.player_.cache_.selectedLanguage;
-
- // Don't replace the kind of track across the same language
- if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {
- return;
- }
- this.player_.cache_.selectedLanguage = {
- enabled: true,
- language: this.track.language,
- kind: this.track.kind
- };
- }
- }
- dispose() {
- // remove reference to track object on dispose
- this.track = null;
- super.dispose();
- }
- }
- Component$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);
-
- /**
- * @file off-text-track-menu-item.js
- */
-
- /**
- * A special menu item for turning off a specific type of text track
- *
- * @extends TextTrackMenuItem
- */
- class OffTextTrackMenuItem extends TextTrackMenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- // Create pseudo track info
- // Requires options['kind']
- options.track = {
- player,
- // it is no longer necessary to store `kind` or `kinds` on the track itself
- // since they are now stored in the `kinds` property of all instances of
- // TextTrackMenuItem, but this will remain for backwards compatibility
- kind: options.kind,
- kinds: options.kinds,
- default: false,
- mode: 'disabled'
- };
- if (!options.kinds) {
- options.kinds = [options.kind];
- }
- if (options.label) {
- options.track.label = options.label;
- } else {
- options.track.label = options.kinds.join(' and ') + ' off';
- }
-
- // MenuItem is selectable
- options.selectable = true;
- // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
- options.multiSelectable = false;
- super(player, options);
- }
-
- /**
- * Handle text track change
- *
- * @param {Event} event
- * The event that caused this function to run
- */
- handleTracksChange(event) {
- const tracks = this.player().textTracks();
- let shouldBeSelected = true;
- for (let i = 0, l = tracks.length; i < l; i++) {
- const track = tracks[i];
- if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {
- shouldBeSelected = false;
- break;
- }
- }
-
- // Prevent redundant selected() calls because they may cause
- // screen readers to read the appended control text unnecessarily
- if (shouldBeSelected !== this.isSelected_) {
- this.selected(shouldBeSelected);
- }
- }
- handleSelectedLanguageChange(event) {
- const tracks = this.player().textTracks();
- let allHidden = true;
- for (let i = 0, l = tracks.length; i < l; i++) {
- const track = tracks[i];
- if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {
- allHidden = false;
- break;
- }
- }
- if (allHidden) {
- this.player_.cache_.selectedLanguage = {
- enabled: false
- };
- }
- }
-
- /**
- * Update control text and label on languagechange
- */
- handleLanguagechange() {
- this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.label);
- super.handleLanguagechange();
- }
- }
- Component$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);
-
- /**
- * @file text-track-button.js
- */
-
- /**
- * The base class for buttons that toggle specific text track types (e.g. subtitles)
- *
- * @extends MenuButton
- */
- class TextTrackButton extends TrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- options.tracks = player.textTracks();
- super(player, options);
- }
-
- /**
- * Create a menu item for each text track
- *
- * @param {TextTrackMenuItem[]} [items=[]]
- * Existing array of items to use during creation
- *
- * @return {TextTrackMenuItem[]}
- * Array of menu items that were created
- */
- createItems(items = [], TrackMenuItem = TextTrackMenuItem) {
- // Label is an override for the [track] off label
- // USed to localise captions/subtitles
- let label;
- if (this.label_) {
- label = `${this.label_} off`;
- }
- // Add an OFF menu item to turn all tracks off
- items.push(new OffTextTrackMenuItem(this.player_, {
- kinds: this.kinds_,
- kind: this.kind_,
- label
- }));
- this.hideThreshold_ += 1;
- const tracks = this.player_.textTracks();
- if (!Array.isArray(this.kinds_)) {
- this.kinds_ = [this.kind_];
- }
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
-
- // only add tracks that are of an appropriate kind and have a label
- if (this.kinds_.indexOf(track.kind) > -1) {
- const item = new TrackMenuItem(this.player_, {
- track,
- kinds: this.kinds_,
- kind: this.kind_,
- // MenuItem is selectable
- selectable: true,
- // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
- multiSelectable: false
- });
- item.addClass(`vjs-${track.kind}-menu-item`);
- items.push(item);
- }
- }
- return items;
- }
- }
- Component$1.registerComponent('TextTrackButton', TextTrackButton);
-
- /**
- * @file chapters-track-menu-item.js
- */
-
- /**
- * The chapter track menu item
- *
- * @extends MenuItem
- */
- class ChaptersTrackMenuItem extends MenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- const track = options.track;
- const cue = options.cue;
- const currentTime = player.currentTime();
-
- // Modify options for parent MenuItem class's init.
- options.selectable = true;
- options.multiSelectable = false;
- options.label = cue.text;
- options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;
- super(player, options);
- this.track = track;
- this.cue = cue;
- }
-
- /**
- * This gets called when an `ChaptersTrackMenuItem` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- super.handleClick();
- this.player_.currentTime(this.cue.startTime);
- }
- }
- Component$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);
-
- /**
- * @file chapters-button.js
- */
-
- /**
- * The button component for toggling and selecting chapters
- * Chapters act much differently than other text tracks
- * Cues are navigation vs. other tracks of alternative languages
- *
- * @extends TextTrackButton
- */
- class ChaptersButton extends TextTrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when this function is ready.
- */
- constructor(player, options, ready) {
- super(player, options, ready);
- this.setIcon('chapters');
- this.selectCurrentItem_ = () => {
- this.items.forEach(item => {
- item.selected(this.track_.activeCues[0] === item.cue);
- });
- };
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-chapters-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-chapters-button ${super.buildWrapperCSSClass()}`;
- }
-
- /**
- * Update the menu based on the current state of its items.
- *
- * @param {Event} [event]
- * An event that triggered this function to run.
- *
- * @listens TextTrackList#addtrack
- * @listens TextTrackList#removetrack
- * @listens TextTrackList#change
- */
- update(event) {
- if (event && event.track && event.track.kind !== 'chapters') {
- return;
- }
- const track = this.findChaptersTrack();
- if (track !== this.track_) {
- this.setTrack(track);
- super.update();
- } else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {
- // Update the menu initially or if the number of cues has changed since set
- super.update();
- }
- }
-
- /**
- * Set the currently selected track for the chapters button.
- *
- * @param {TextTrack} track
- * The new track to select. Nothing will change if this is the currently selected
- * track.
- */
- setTrack(track) {
- if (this.track_ === track) {
- return;
- }
- if (!this.updateHandler_) {
- this.updateHandler_ = this.update.bind(this);
- }
-
- // here this.track_ refers to the old track instance
- if (this.track_) {
- const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
- if (remoteTextTrackEl) {
- remoteTextTrackEl.removeEventListener('load', this.updateHandler_);
- }
- this.track_.removeEventListener('cuechange', this.selectCurrentItem_);
- this.track_ = null;
- }
- this.track_ = track;
-
- // here this.track_ refers to the new track instance
- if (this.track_) {
- this.track_.mode = 'hidden';
- const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
- if (remoteTextTrackEl) {
- remoteTextTrackEl.addEventListener('load', this.updateHandler_);
- }
- this.track_.addEventListener('cuechange', this.selectCurrentItem_);
- }
- }
-
- /**
- * Find the track object that is currently in use by this ChaptersButton
- *
- * @return {TextTrack|undefined}
- * The current track or undefined if none was found.
- */
- findChaptersTrack() {
- const tracks = this.player_.textTracks() || [];
- for (let i = tracks.length - 1; i >= 0; i--) {
- // We will always choose the last track as our chaptersTrack
- const track = tracks[i];
- if (track.kind === this.kind_) {
- return track;
- }
- }
- }
-
- /**
- * Get the caption for the ChaptersButton based on the track label. This will also
- * use the current tracks localized kind as a fallback if a label does not exist.
- *
- * @return {string}
- * The tracks current label or the localized track kind.
- */
- getMenuCaption() {
- if (this.track_ && this.track_.label) {
- return this.track_.label;
- }
- return this.localize(toTitleCase$1(this.kind_));
- }
-
- /**
- * Create menu from chapter track
- *
- * @return { import('../../menu/menu').default }
- * New menu for the chapter buttons
- */
- createMenu() {
- this.options_.title = this.getMenuCaption();
- return super.createMenu();
- }
-
- /**
- * Create a menu item for each text track
- *
- * @return { import('./text-track-menu-item').default[] }
- * Array of menu items
- */
- createItems() {
- const items = [];
- if (!this.track_) {
- return items;
- }
- const cues = this.track_.cues;
- if (!cues) {
- return items;
- }
- for (let i = 0, l = cues.length; i < l; i++) {
- const cue = cues[i];
- const mi = new ChaptersTrackMenuItem(this.player_, {
- track: this.track_,
- cue
- });
- items.push(mi);
- }
- return items;
- }
- }
-
- /**
- * `kind` of TextTrack to look for to associate it with this menu.
- *
- * @type {string}
- * @private
- */
- ChaptersButton.prototype.kind_ = 'chapters';
-
- /**
- * The text that should display over the `ChaptersButton`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- ChaptersButton.prototype.controlText_ = 'Chapters';
- Component$1.registerComponent('ChaptersButton', ChaptersButton);
-
- /**
- * @file descriptions-button.js
- */
-
- /**
- * The button component for toggling and selecting descriptions
- *
- * @extends TextTrackButton
- */
- class DescriptionsButton extends TextTrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when this component is ready.
- */
- constructor(player, options, ready) {
- super(player, options, ready);
- this.setIcon('audio-description');
- const tracks = player.textTracks();
- const changeHandler = bind_(this, this.handleTracksChange);
- tracks.addEventListener('change', changeHandler);
- this.on('dispose', function () {
- tracks.removeEventListener('change', changeHandler);
- });
- }
-
- /**
- * Handle text track change
- *
- * @param {Event} event
- * The event that caused this function to run
- *
- * @listens TextTrackList#change
- */
- handleTracksChange(event) {
- const tracks = this.player().textTracks();
- let disabled = false;
-
- // Check whether a track of a different kind is showing
- for (let i = 0, l = tracks.length; i < l; i++) {
- const track = tracks[i];
- if (track.kind !== this.kind_ && track.mode === 'showing') {
- disabled = true;
- break;
- }
- }
-
- // If another track is showing, disable this menu button
- if (disabled) {
- this.disable();
- } else {
- this.enable();
- }
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-descriptions-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-descriptions-button ${super.buildWrapperCSSClass()}`;
- }
- }
-
- /**
- * `kind` of TextTrack to look for to associate it with this menu.
- *
- * @type {string}
- * @private
- */
- DescriptionsButton.prototype.kind_ = 'descriptions';
-
- /**
- * The text that should display over the `DescriptionsButton`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- DescriptionsButton.prototype.controlText_ = 'Descriptions';
- Component$1.registerComponent('DescriptionsButton', DescriptionsButton);
-
- /**
- * @file subtitles-button.js
- */
-
- /**
- * The button component for toggling and selecting subtitles
- *
- * @extends TextTrackButton
- */
- class SubtitlesButton extends TextTrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when this component is ready.
- */
- constructor(player, options, ready) {
- super(player, options, ready);
- this.setIcon('subtitles');
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-subtitles-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-subtitles-button ${super.buildWrapperCSSClass()}`;
- }
- }
-
- /**
- * `kind` of TextTrack to look for to associate it with this menu.
- *
- * @type {string}
- * @private
- */
- SubtitlesButton.prototype.kind_ = 'subtitles';
-
- /**
- * The text that should display over the `SubtitlesButton`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- SubtitlesButton.prototype.controlText_ = 'Subtitles';
- Component$1.registerComponent('SubtitlesButton', SubtitlesButton);
-
- /**
- * @file caption-settings-menu-item.js
- */
-
- /**
- * The menu item for caption track settings menu
- *
- * @extends TextTrackMenuItem
- */
- class CaptionSettingsMenuItem extends TextTrackMenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- options.track = {
- player,
- kind: options.kind,
- label: options.kind + ' settings',
- selectable: false,
- default: false,
- mode: 'disabled'
- };
-
- // CaptionSettingsMenuItem has no concept of 'selected'
- options.selectable = false;
- options.name = 'CaptionSettingsMenuItem';
- super(player, options);
- this.addClass('vjs-texttrack-settings');
- this.controlText(', opens ' + options.kind + ' settings dialog');
- }
-
- /**
- * This gets called when an `CaptionSettingsMenuItem` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- this.player().getChild('textTrackSettings').open();
- }
-
- /**
- * Update control text and label on languagechange
- */
- handleLanguagechange() {
- this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.kind + ' settings');
- super.handleLanguagechange();
- }
- }
- Component$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);
-
- /**
- * @file captions-button.js
- */
-
- /**
- * The button component for toggling and selecting captions
- *
- * @extends TextTrackButton
- */
- class CaptionsButton extends TextTrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when this component is ready.
- */
- constructor(player, options, ready) {
- super(player, options, ready);
- this.setIcon('captions');
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-captions-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-captions-button ${super.buildWrapperCSSClass()}`;
- }
-
- /**
- * Create caption menu items
- *
- * @return {CaptionSettingsMenuItem[]}
- * The array of current menu items.
- */
- createItems() {
- const items = [];
- if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
- items.push(new CaptionSettingsMenuItem(this.player_, {
- kind: this.kind_
- }));
- this.hideThreshold_ += 1;
- }
- return super.createItems(items);
- }
- }
-
- /**
- * `kind` of TextTrack to look for to associate it with this menu.
- *
- * @type {string}
- * @private
- */
- CaptionsButton.prototype.kind_ = 'captions';
-
- /**
- * The text that should display over the `CaptionsButton`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- CaptionsButton.prototype.controlText_ = 'Captions';
- Component$1.registerComponent('CaptionsButton', CaptionsButton);
-
- /**
- * @file subs-caps-menu-item.js
- */
-
- /**
- * SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles
- * in the SubsCapsMenu.
- *
- * @extends TextTrackMenuItem
- */
- class SubsCapsMenuItem extends TextTrackMenuItem {
- createEl(type, props, attrs) {
- const el = super.createEl(type, props, attrs);
- const parentSpan = el.querySelector('.vjs-menu-item-text');
- if (this.options_.track.kind === 'captions') {
- if (this.player_.options_.experimentalSvgIcons) {
- this.setIcon('captions', el);
- } else {
- parentSpan.appendChild(createEl('span', {
- className: 'vjs-icon-placeholder'
- }, {
- 'aria-hidden': true
- }));
- }
- parentSpan.appendChild(createEl('span', {
- className: 'vjs-control-text',
- // space added as the text will visually flow with the
- // label
- textContent: ` ${this.localize('Captions')}`
- }));
- }
- return el;
- }
- }
- Component$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);
-
- /**
- * @file sub-caps-button.js
- */
-
- /**
- * The button component for toggling and selecting captions and/or subtitles
- *
- * @extends TextTrackButton
- */
- class SubsCapsButton extends TextTrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * The function to call when this component is ready.
- */
- constructor(player, options = {}) {
- super(player, options);
-
- // Although North America uses "captions" in most cases for
- // "captions and subtitles" other locales use "subtitles"
- this.label_ = 'subtitles';
- this.setIcon('subtitles');
- if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {
- this.label_ = 'captions';
- this.setIcon('captions');
- }
- this.menuButton_.controlText(toTitleCase$1(this.label_));
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-subs-caps-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-subs-caps-button ${super.buildWrapperCSSClass()}`;
- }
-
- /**
- * Create caption/subtitles menu items
- *
- * @return {CaptionSettingsMenuItem[]}
- * The array of current menu items.
- */
- createItems() {
- let items = [];
- if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
- items.push(new CaptionSettingsMenuItem(this.player_, {
- kind: this.label_
- }));
- this.hideThreshold_ += 1;
- }
- items = super.createItems(items, SubsCapsMenuItem);
- return items;
- }
- }
-
- /**
- * `kind`s of TextTrack to look for to associate it with this menu.
- *
- * @type {array}
- * @private
- */
- SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];
-
- /**
- * The text that should display over the `SubsCapsButton`s controls.
- *
- *
- * @type {string}
- * @protected
- */
- SubsCapsButton.prototype.controlText_ = 'Subtitles';
- Component$1.registerComponent('SubsCapsButton', SubsCapsButton);
-
- /**
- * @file audio-track-menu-item.js
- */
-
- /**
- * An {@link AudioTrack} {@link MenuItem}
- *
- * @extends MenuItem
- */
- class AudioTrackMenuItem extends MenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- const track = options.track;
- const tracks = player.audioTracks();
-
- // Modify options for parent MenuItem class's init.
- options.label = track.label || track.language || 'Unknown';
- options.selected = track.enabled;
- super(player, options);
- this.track = track;
- this.addClass(`vjs-${track.kind}-menu-item`);
- const changeHandler = (...args) => {
- this.handleTracksChange.apply(this, args);
- };
- tracks.addEventListener('change', changeHandler);
- this.on('dispose', () => {
- tracks.removeEventListener('change', changeHandler);
- });
- }
- createEl(type, props, attrs) {
- const el = super.createEl(type, props, attrs);
- const parentSpan = el.querySelector('.vjs-menu-item-text');
- if (['main-desc', 'description'].indexOf(this.options_.track.kind) >= 0) {
- parentSpan.appendChild(createEl('span', {
- className: 'vjs-icon-placeholder'
- }, {
- 'aria-hidden': true
- }));
- parentSpan.appendChild(createEl('span', {
- className: 'vjs-control-text',
- textContent: ' ' + this.localize('Descriptions')
- }));
- }
- return el;
- }
-
- /**
- * This gets called when an `AudioTrackMenuItem is "clicked". See {@link ClickableComponent}
- * for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- super.handleClick(event);
-
- // the audio track list will automatically toggle other tracks
- // off for us.
- this.track.enabled = true;
-
- // when native audio tracks are used, we want to make sure that other tracks are turned off
- if (this.player_.tech_.featuresNativeAudioTracks) {
- const tracks = this.player_.audioTracks();
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
-
- // skip the current track since we enabled it above
- if (track === this.track) {
- continue;
- }
- track.enabled = track === this.track;
- }
- }
- }
-
- /**
- * Handle any {@link AudioTrack} change.
- *
- * @param {Event} [event]
- * The {@link AudioTrackList#change} event that caused this to run.
- *
- * @listens AudioTrackList#change
- */
- handleTracksChange(event) {
- this.selected(this.track.enabled);
- }
- }
- Component$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);
-
- /**
- * @file audio-track-button.js
- */
-
- /**
- * The base class for buttons that toggle specific {@link AudioTrack} types.
- *
- * @extends TrackButton
- */
- class AudioTrackButton extends TrackButton {
- /**
- * Creates an instance of this class.
- *
- * @param {Player} player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options={}]
- * The key/value store of player options.
- */
- constructor(player, options = {}) {
- options.tracks = player.audioTracks();
- super(player, options);
- this.setIcon('audio');
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-audio-button ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-audio-button ${super.buildWrapperCSSClass()}`;
- }
-
- /**
- * Create a menu item for each audio track
- *
- * @param {AudioTrackMenuItem[]} [items=[]]
- * An array of existing menu items to use.
- *
- * @return {AudioTrackMenuItem[]}
- * An array of menu items
- */
- createItems(items = []) {
- // if there's only one audio track, there no point in showing it
- this.hideThreshold_ = 1;
- const tracks = this.player_.audioTracks();
- for (let i = 0; i < tracks.length; i++) {
- const track = tracks[i];
- items.push(new AudioTrackMenuItem(this.player_, {
- track,
- // MenuItem is selectable
- selectable: true,
- // MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
- multiSelectable: false
- }));
- }
- return items;
- }
- }
-
- /**
- * The text that should display over the `AudioTrackButton`s controls. Added for localization.
- *
- * @type {string}
- * @protected
- */
- AudioTrackButton.prototype.controlText_ = 'Audio Track';
- Component$1.registerComponent('AudioTrackButton', AudioTrackButton);
-
- /**
- * @file playback-rate-menu-item.js
- */
-
- /**
- * The specific menu item type for selecting a playback rate.
- *
- * @extends MenuItem
- */
- class PlaybackRateMenuItem extends MenuItem {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- const label = options.rate;
- const rate = parseFloat(label, 10);
-
- // Modify options for parent MenuItem class's init.
- options.label = label;
- options.selected = rate === player.playbackRate();
- options.selectable = true;
- options.multiSelectable = false;
- super(player, options);
- this.label = label;
- this.rate = rate;
- this.on(player, 'ratechange', e => this.update(e));
- }
-
- /**
- * This gets called when an `PlaybackRateMenuItem` is "clicked". See
- * {@link ClickableComponent} for more detailed information on what a click can be.
- *
- * @param {Event} [event]
- * The `keydown`, `tap`, or `click` event that caused this function to be
- * called.
- *
- * @listens tap
- * @listens click
- */
- handleClick(event) {
- super.handleClick();
- this.player().playbackRate(this.rate);
- }
-
- /**
- * Update the PlaybackRateMenuItem when the playbackrate changes.
- *
- * @param {Event} [event]
- * The `ratechange` event that caused this function to run.
- *
- * @listens Player#ratechange
- */
- update(event) {
- this.selected(this.player().playbackRate() === this.rate);
- }
- }
-
- /**
- * The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.
- *
- * @type {string}
- * @private
- */
- PlaybackRateMenuItem.prototype.contentElType = 'button';
- Component$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);
-
- /**
- * @file playback-rate-menu-button.js
- */
-
- /**
- * The component for controlling the playback rate.
- *
- * @extends MenuButton
- */
- class PlaybackRateMenuButton extends MenuButton {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.menuButton_.el_.setAttribute('aria-describedby', this.labelElId_);
- this.updateVisibility();
- this.updateLabel();
- this.on(player, 'loadstart', e => this.updateVisibility(e));
- this.on(player, 'ratechange', e => this.updateLabel(e));
- this.on(player, 'playbackrateschange', e => this.handlePlaybackRateschange(e));
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- const el = super.createEl();
- this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;
- this.labelEl_ = createEl('div', {
- className: 'vjs-playback-rate-value',
- id: this.labelElId_,
- textContent: '1x'
- });
- el.appendChild(this.labelEl_);
- return el;
- }
- dispose() {
- this.labelEl_ = null;
- super.dispose();
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-playback-rate ${super.buildCSSClass()}`;
- }
- buildWrapperCSSClass() {
- return `vjs-playback-rate ${super.buildWrapperCSSClass()}`;
- }
-
- /**
- * Create the list of menu items. Specific to each subclass.
- *
- */
- createItems() {
- const rates = this.playbackRates();
- const items = [];
- for (let i = rates.length - 1; i >= 0; i--) {
- items.push(new PlaybackRateMenuItem(this.player(), {
- rate: rates[i] + 'x'
- }));
- }
- return items;
- }
-
- /**
- * On playbackrateschange, update the menu to account for the new items.
- *
- * @listens Player#playbackrateschange
- */
- handlePlaybackRateschange(event) {
- this.update();
- }
-
- /**
- * Get possible playback rates
- *
- * @return {Array}
- * All possible playback rates
- */
- playbackRates() {
- const player = this.player();
- return player.playbackRates && player.playbackRates() || [];
- }
-
- /**
- * Get whether playback rates is supported by the tech
- * and an array of playback rates exists
- *
- * @return {boolean}
- * Whether changing playback rate is supported
- */
- playbackRateSupported() {
- return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;
- }
-
- /**
- * Hide playback rate controls when they're no playback rate options to select
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#loadstart
- */
- updateVisibility(event) {
- if (this.playbackRateSupported()) {
- this.removeClass('vjs-hidden');
- } else {
- this.addClass('vjs-hidden');
- }
- }
-
- /**
- * Update button label when rate changed
- *
- * @param {Event} [event]
- * The event that caused this function to run.
- *
- * @listens Player#ratechange
- */
- updateLabel(event) {
- if (this.playbackRateSupported()) {
- this.labelEl_.textContent = this.player().playbackRate() + 'x';
- }
- }
- }
-
- /**
- * The text that should display over the `PlaybackRateMenuButton`s controls.
- *
- * Added for localization.
- *
- * @type {string}
- * @protected
- */
- PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';
- Component$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);
-
- /**
- * @file spacer.js
- */
-
- /**
- * Just an empty spacer element that can be used as an append point for plugins, etc.
- * Also can be used to create space between elements when necessary.
- *
- * @extends Component
- */
- class Spacer extends Component$1 {
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-spacer ${super.buildCSSClass()}`;
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl(tag = 'div', props = {}, attributes = {}) {
- if (!props.className) {
- props.className = this.buildCSSClass();
- }
- return super.createEl(tag, props, attributes);
- }
- }
- Component$1.registerComponent('Spacer', Spacer);
-
- /**
- * @file custom-control-spacer.js
- */
-
- /**
- * Spacer specifically meant to be used as an insertion point for new plugins, etc.
- *
- * @extends Spacer
- */
- class CustomControlSpacer extends Spacer {
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- */
- buildCSSClass() {
- return `vjs-custom-control-spacer ${super.buildCSSClass()}`;
- }
-
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: this.buildCSSClass(),
- // No-flex/table-cell mode requires there be some content
- // in the cell to fill the remaining space of the table.
- textContent: '\u00a0'
- });
- }
- }
- Component$1.registerComponent('CustomControlSpacer', CustomControlSpacer);
-
- /**
- * @file control-bar.js
- */
-
- /**
- * Container of main controls.
- *
- * @extends Component
- */
- class ControlBar extends Component$1 {
- /**
- * Create the `Component`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- return super.createEl('div', {
- className: 'vjs-control-bar',
- dir: 'ltr'
- });
- }
- }
-
- /**
- * Default options for `ControlBar`
- *
- * @type {Object}
- * @private
- */
- ControlBar.prototype.options_ = {
- children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'pictureInPictureToggle', 'fullscreenToggle']
- };
- Component$1.registerComponent('ControlBar', ControlBar);
-
- /**
- * @file error-display.js
- */
-
- /**
- * A display that indicates an error has occurred. This means that the video
- * is unplayable.
- *
- * @extends ModalDialog
- */
- class ErrorDisplay extends ModalDialog {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- super(player, options);
- this.on(player, 'error', e => {
- this.open(e);
- });
- }
-
- /**
- * Builds the default DOM `className`.
- *
- * @return {string}
- * The DOM `className` for this object.
- *
- * @deprecated Since version 5.
- */
- buildCSSClass() {
- return `vjs-error-display ${super.buildCSSClass()}`;
- }
-
- /**
- * Gets the localized error message based on the `Player`s error.
- *
- * @return {string}
- * The `Player`s error message localized or an empty string.
- */
- content() {
- const error = this.player().error();
- return error ? this.localize(error.message) : '';
- }
- }
-
- /**
- * The default options for an `ErrorDisplay`.
- *
- * @private
- */
- ErrorDisplay.prototype.options_ = Object.assign({}, ModalDialog.prototype.options_, {
- pauseOnOpen: false,
- fillAlways: true,
- temporary: false,
- uncloseable: true
- });
- Component$1.registerComponent('ErrorDisplay', ErrorDisplay);
-
- /**
- * @file text-track-settings.js
- */
- const LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';
- const COLOR_BLACK = ['#000', 'Black'];
- const COLOR_BLUE = ['#00F', 'Blue'];
- const COLOR_CYAN = ['#0FF', 'Cyan'];
- const COLOR_GREEN = ['#0F0', 'Green'];
- const COLOR_MAGENTA = ['#F0F', 'Magenta'];
- const COLOR_RED = ['#F00', 'Red'];
- const COLOR_WHITE = ['#FFF', 'White'];
- const COLOR_YELLOW = ['#FF0', 'Yellow'];
- const OPACITY_OPAQUE = ['1', 'Opaque'];
- const OPACITY_SEMI = ['0.5', 'Semi-Transparent'];
- const OPACITY_TRANS = ['0', 'Transparent'];
-
- // Configuration for the various <select> elements in the DOM of this component.
- //
- // Possible keys include:
- //
- // `default`:
- // The default option index. Only needs to be provided if not zero.
- // `parser`:
- // A function which is used to parse the value from the selected option in
- // a customized way.
- // `selector`:
- // The selector used to find the associated <select> element.
- const selectConfigs = {
- backgroundColor: {
- selector: '.vjs-bg-color > select',
- id: 'captions-background-color-%s',
- label: 'Color',
- options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
- },
- backgroundOpacity: {
- selector: '.vjs-bg-opacity > select',
- id: 'captions-background-opacity-%s',
- label: 'Opacity',
- options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS]
- },
- color: {
- selector: '.vjs-text-color > select',
- id: 'captions-foreground-color-%s',
- label: 'Color',
- options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN]
- },
- edgeStyle: {
- selector: '.vjs-edge-style > select',
- id: '%s',
- label: 'Text Edge Style',
- options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Drop shadow']]
- },
- fontFamily: {
- selector: '.vjs-font-family > select',
- id: 'captions-font-family-%s',
- label: 'Font Family',
- options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]
- },
- fontPercent: {
- selector: '.vjs-font-percent > select',
- id: 'captions-font-size-%s',
- label: 'Font Size',
- options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],
- default: 2,
- parser: v => v === '1.00' ? null : Number(v)
- },
- textOpacity: {
- selector: '.vjs-text-opacity > select',
- id: 'captions-foreground-opacity-%s',
- label: 'Opacity',
- options: [OPACITY_OPAQUE, OPACITY_SEMI]
- },
- // Options for this object are defined below.
- windowColor: {
- selector: '.vjs-window-color > select',
- id: 'captions-window-color-%s',
- label: 'Color'
- },
- // Options for this object are defined below.
- windowOpacity: {
- selector: '.vjs-window-opacity > select',
- id: 'captions-window-opacity-%s',
- label: 'Opacity',
- options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE]
- }
- };
- selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;
-
- /**
- * Get the actual value of an option.
- *
- * @param {string} value
- * The value to get
- *
- * @param {Function} [parser]
- * Optional function to adjust the value.
- *
- * @return {*}
- * - Will be `undefined` if no value exists
- * - Will be `undefined` if the given value is "none".
- * - Will be the actual value otherwise.
- *
- * @private
- */
- function parseOptionValue(value, parser) {
- if (parser) {
- value = parser(value);
- }
- if (value && value !== 'none') {
- return value;
- }
- }
-
- /**
- * Gets the value of the selected <option> element within a <select> element.
- *
- * @param {Element} el
- * the element to look in
- *
- * @param {Function} [parser]
- * Optional function to adjust the value.
- *
- * @return {*}
- * - Will be `undefined` if no value exists
- * - Will be `undefined` if the given value is "none".
- * - Will be the actual value otherwise.
- *
- * @private
- */
- function getSelectedOptionValue(el, parser) {
- const value = el.options[el.options.selectedIndex].value;
- return parseOptionValue(value, parser);
- }
-
- /**
- * Sets the selected <option> element within a <select> element based on a
- * given value.
- *
- * @param {Element} el
- * The element to look in.
- *
- * @param {string} value
- * the property to look on.
- *
- * @param {Function} [parser]
- * Optional function to adjust the value before comparing.
- *
- * @private
- */
- function setSelectedOption(el, value, parser) {
- if (!value) {
- return;
- }
- for (let i = 0; i < el.options.length; i++) {
- if (parseOptionValue(el.options[i].value, parser) === value) {
- el.selectedIndex = i;
- break;
- }
- }
- }
-
- /**
- * Manipulate Text Tracks settings.
- *
- * @extends ModalDialog
- */
- class TextTrackSettings extends ModalDialog {
- /**
- * Creates an instance of this class.
- *
- * @param { import('../player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- */
- constructor(player, options) {
- options.temporary = false;
- super(player, options);
- this.updateDisplay = this.updateDisplay.bind(this);
-
- // fill the modal and pretend we have opened it
- this.fill();
- this.hasBeenOpened_ = this.hasBeenFilled_ = true;
- this.endDialog = createEl('p', {
- className: 'vjs-control-text',
- textContent: this.localize('End of dialog window.')
- });
- this.el().appendChild(this.endDialog);
- this.setDefaults();
-
- // Grab `persistTextTrackSettings` from the player options if not passed in child options
- if (options.persistTextTrackSettings === undefined) {
- this.options_.persistTextTrackSettings = this.options_.playerOptions.persistTextTrackSettings;
- }
- this.on(this.$('.vjs-done-button'), 'click', () => {
- this.saveSettings();
- this.close();
- });
- this.on(this.$('.vjs-default-button'), 'click', () => {
- this.setDefaults();
- this.updateDisplay();
- });
- each(selectConfigs, config => {
- this.on(this.$(config.selector), 'change', this.updateDisplay);
- });
- if (this.options_.persistTextTrackSettings) {
- this.restoreSettings();
- }
- }
- dispose() {
- this.endDialog = null;
- super.dispose();
- }
-
- /**
- * Create a <select> element with configured options.
- *
- * @param {string} key
- * Configuration key to use during creation.
- *
- * @param {string} [legendId]
- * Id of associated <legend>.
- *
- * @param {string} [type=label]
- * Type of labelling element, `label` or `legend`
- *
- * @return {string}
- * An HTML string.
- *
- * @private
- */
- createElSelect_(key, legendId = '', type = 'label') {
- const config = selectConfigs[key];
- const id = config.id.replace('%s', this.id_);
- const selectLabelledbyIds = [legendId, id].join(' ').trim();
- const guid = `vjs_select_${newGUID()}`;
- return [`<${type} id="${id}"${type === 'label' ? ` for="${guid}" class="vjs-label"` : ''}>`, this.localize(config.label), `</${type}>`, `<select aria-labelledby="${selectLabelledbyIds}" id="${guid}">`].concat(config.options.map(o => {
- const optionId = id + '-' + o[1].replace(/\W+/g, '');
- return [`<option id="${optionId}" value="${o[0]}" `, `aria-labelledby="${selectLabelledbyIds} ${optionId}">`, this.localize(o[1]), '</option>'].join('');
- })).concat('</select>').join('');
- }
-
- /**
- * Create foreground color element for the component
- *
- * @return {string}
- * An HTML string.
- *
- * @private
- */
- createElFgColor_() {
- const legendId = `captions-text-legend-${this.id_}`;
- return ['<fieldset class="vjs-fg vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Text'), '</legend>', '<span class="vjs-text-color">', this.createElSelect_('color', legendId), '</span>', '<span class="vjs-text-opacity vjs-opacity">', this.createElSelect_('textOpacity', legendId), '</span>', '</fieldset>'].join('');
- }
-
- /**
- * Create background color element for the component
- *
- * @return {string}
- * An HTML string.
- *
- * @private
- */
- createElBgColor_() {
- const legendId = `captions-background-${this.id_}`;
- return ['<fieldset class="vjs-bg vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Text Background'), '</legend>', '<span class="vjs-bg-color">', this.createElSelect_('backgroundColor', legendId), '</span>', '<span class="vjs-bg-opacity vjs-opacity">', this.createElSelect_('backgroundOpacity', legendId), '</span>', '</fieldset>'].join('');
- }
-
- /**
- * Create window color element for the component
- *
- * @return {string}
- * An HTML string.
- *
- * @private
- */
- createElWinColor_() {
- const legendId = `captions-window-${this.id_}`;
- return ['<fieldset class="vjs-window vjs-track-setting">', `<legend id="${legendId}">`, this.localize('Caption Area Background'), '</legend>', '<span class="vjs-window-color">', this.createElSelect_('windowColor', legendId), '</span>', '<span class="vjs-window-opacity vjs-opacity">', this.createElSelect_('windowOpacity', legendId), '</span>', '</fieldset>'].join('');
- }
-
- /**
- * Create color elements for the component
- *
- * @return {Element}
- * The element that was created
- *
- * @private
- */
- createElColors_() {
- return createEl('div', {
- className: 'vjs-track-settings-colors',
- innerHTML: [this.createElFgColor_(), this.createElBgColor_(), this.createElWinColor_()].join('')
- });
- }
-
- /**
- * Create font elements for the component
- *
- * @return {Element}
- * The element that was created.
- *
- * @private
- */
- createElFont_() {
- return createEl('div', {
- className: 'vjs-track-settings-font',
- innerHTML: ['<fieldset class="vjs-font-percent vjs-track-setting">', this.createElSelect_('fontPercent', '', 'legend'), '</fieldset>', '<fieldset class="vjs-edge-style vjs-track-setting">', this.createElSelect_('edgeStyle', '', 'legend'), '</fieldset>', '<fieldset class="vjs-font-family vjs-track-setting">', this.createElSelect_('fontFamily', '', 'legend'), '</fieldset>'].join('')
- });
- }
-
- /**
- * Create controls for the component
- *
- * @return {Element}
- * The element that was created.
- *
- * @private
- */
- createElControls_() {
- const defaultsDescription = this.localize('restore all settings to the default values');
- return createEl('div', {
- className: 'vjs-track-settings-controls',
- innerHTML: [`<button type="button" class="vjs-default-button" title="${defaultsDescription}">`, this.localize('Reset'), `<span class="vjs-control-text"> ${defaultsDescription}</span>`, '</button>', `<button type="button" class="vjs-done-button">${this.localize('Done')}</button>`].join('')
- });
- }
- content() {
- return [this.createElColors_(), this.createElFont_(), this.createElControls_()];
- }
- label() {
- return this.localize('Caption Settings Dialog');
- }
- description() {
- return this.localize('Beginning of dialog window. Escape will cancel and close the window.');
- }
- buildCSSClass() {
- return super.buildCSSClass() + ' vjs-text-track-settings';
- }
-
- /**
- * Gets an object of text track settings (or null).
- *
- * @return {Object}
- * An object with config values parsed from the DOM or localStorage.
- */
- getValues() {
- return reduce(selectConfigs, (accum, config, key) => {
- const value = getSelectedOptionValue(this.$(config.selector), config.parser);
- if (value !== undefined) {
- accum[key] = value;
- }
- return accum;
- }, {});
- }
-
- /**
- * Sets text track settings from an object of values.
- *
- * @param {Object} values
- * An object with config values parsed from the DOM or localStorage.
- */
- setValues(values) {
- each(selectConfigs, (config, key) => {
- setSelectedOption(this.$(config.selector), values[key], config.parser);
- });
- }
-
- /**
- * Sets all `<select>` elements to their default values.
- */
- setDefaults() {
- each(selectConfigs, config => {
- const index = config.hasOwnProperty('default') ? config.default : 0;
- this.$(config.selector).selectedIndex = index;
- });
- }
-
- /**
- * Restore texttrack settings from localStorage
- */
- restoreSettings() {
- let values;
- try {
- values = JSON.parse(window.localStorage.getItem(LOCAL_STORAGE_KEY$1));
- } catch (err) {
- log$1.warn(err);
- }
- if (values) {
- this.setValues(values);
- }
- }
-
- /**
- * Save text track settings to localStorage
- */
- saveSettings() {
- if (!this.options_.persistTextTrackSettings) {
- return;
- }
- const values = this.getValues();
- try {
- if (Object.keys(values).length) {
- window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));
- } else {
- window.localStorage.removeItem(LOCAL_STORAGE_KEY$1);
- }
- } catch (err) {
- log$1.warn(err);
- }
- }
-
- /**
- * Update display of text track settings
- */
- updateDisplay() {
- const ttDisplay = this.player_.getChild('textTrackDisplay');
- if (ttDisplay) {
- ttDisplay.updateDisplay();
- }
- }
-
- /**
- * conditionally blur the element and refocus the captions button
- *
- * @private
- */
- conditionalBlur_() {
- this.previouslyActiveEl_ = null;
- const cb = this.player_.controlBar;
- const subsCapsBtn = cb && cb.subsCapsButton;
- const ccBtn = cb && cb.captionsButton;
- if (subsCapsBtn) {
- subsCapsBtn.focus();
- } else if (ccBtn) {
- ccBtn.focus();
- }
- }
-
- /**
- * Repopulate dialog with new localizations on languagechange
- */
- handleLanguagechange() {
- this.fill();
- }
- }
- Component$1.registerComponent('TextTrackSettings', TextTrackSettings);
-
- /**
- * @file resize-manager.js
- */
-
- /**
- * A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.
- *
- * It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.
- *
- * If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.
- * If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.
- *
- * @example <caption>How to disable the resize manager</caption>
- * const player = videojs('#vid', {
- * resizeManager: false
- * });
- *
- * @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}
- *
- * @extends Component
- */
- class ResizeManager extends Component$1 {
- /**
- * Create the ResizeManager.
- *
- * @param {Object} player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of ResizeManager options.
- *
- * @param {Object} [options.ResizeObserver]
- * A polyfill for ResizeObserver can be passed in here.
- * If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.
- */
- constructor(player, options) {
- let RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window.ResizeObserver;
-
- // if `null` was passed, we want to disable the ResizeObserver
- if (options.ResizeObserver === null) {
- RESIZE_OBSERVER_AVAILABLE = false;
- }
-
- // Only create an element when ResizeObserver isn't available
- const options_ = merge$2({
- createEl: !RESIZE_OBSERVER_AVAILABLE,
- reportTouchActivity: false
- }, options);
- super(player, options_);
- this.ResizeObserver = options.ResizeObserver || window.ResizeObserver;
- this.loadListener_ = null;
- this.resizeObserver_ = null;
- this.debouncedHandler_ = debounce(() => {
- this.resizeHandler();
- }, 100, false, this);
- if (RESIZE_OBSERVER_AVAILABLE) {
- this.resizeObserver_ = new this.ResizeObserver(this.debouncedHandler_);
- this.resizeObserver_.observe(player.el());
- } else {
- this.loadListener_ = () => {
- if (!this.el_ || !this.el_.contentWindow) {
- return;
- }
- const debouncedHandler_ = this.debouncedHandler_;
- let unloadListener_ = this.unloadListener_ = function () {
- off(this, 'resize', debouncedHandler_);
- off(this, 'unload', unloadListener_);
- unloadListener_ = null;
- };
-
- // safari and edge can unload the iframe before resizemanager dispose
- // we have to dispose of event handlers correctly before that happens
- on(this.el_.contentWindow, 'unload', unloadListener_);
- on(this.el_.contentWindow, 'resize', debouncedHandler_);
- };
- this.one('load', this.loadListener_);
- }
- }
- createEl() {
- return super.createEl('iframe', {
- className: 'vjs-resize-manager',
- tabIndex: -1,
- title: this.localize('No content')
- }, {
- 'aria-hidden': 'true'
- });
- }
-
- /**
- * Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver
- *
- * @fires Player#playerresize
- */
- resizeHandler() {
- /**
- * Called when the player size has changed
- *
- * @event Player#playerresize
- * @type {Event}
- */
- // make sure player is still around to trigger
- // prevents this from causing an error after dispose
- if (!this.player_ || !this.player_.trigger) {
- return;
- }
- this.player_.trigger('playerresize');
- }
- dispose() {
- if (this.debouncedHandler_) {
- this.debouncedHandler_.cancel();
- }
- if (this.resizeObserver_) {
- if (this.player_.el()) {
- this.resizeObserver_.unobserve(this.player_.el());
- }
- this.resizeObserver_.disconnect();
- }
- if (this.loadListener_) {
- this.off('load', this.loadListener_);
- }
- if (this.el_ && this.el_.contentWindow && this.unloadListener_) {
- this.unloadListener_.call(this.el_.contentWindow);
- }
- this.ResizeObserver = null;
- this.resizeObserver = null;
- this.debouncedHandler_ = null;
- this.loadListener_ = null;
- super.dispose();
- }
- }
- Component$1.registerComponent('ResizeManager', ResizeManager);
-
- const defaults = {
- trackingThreshold: 20,
- liveTolerance: 15
- };
-
- /*
- track when we are at the live edge, and other helpers for live playback */
-
- /**
- * A class for checking live current time and determining when the player
- * is at or behind the live edge.
- */
- class LiveTracker extends Component$1 {
- /**
- * Creates an instance of this class.
- *
- * @param { import('./player').default } player
- * The `Player` that this class should be attached to.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {number} [options.trackingThreshold=20]
- * Number of seconds of live window (seekableEnd - seekableStart) that
- * media needs to have before the liveui will be shown.
- *
- * @param {number} [options.liveTolerance=15]
- * Number of seconds behind live that we have to be
- * before we will be considered non-live. Note that this will only
- * be used when playing at the live edge. This allows large seekable end
- * changes to not effect whether we are live or not.
- */
- constructor(player, options) {
- // LiveTracker does not need an element
- const options_ = merge$2(defaults, options, {
- createEl: false
- });
- super(player, options_);
- this.trackLiveHandler_ = () => this.trackLive_();
- this.handlePlay_ = e => this.handlePlay(e);
- this.handleFirstTimeupdate_ = e => this.handleFirstTimeupdate(e);
- this.handleSeeked_ = e => this.handleSeeked(e);
- this.seekToLiveEdge_ = e => this.seekToLiveEdge(e);
- this.reset_();
- this.on(this.player_, 'durationchange', e => this.handleDurationchange(e));
- // we should try to toggle tracking on canplay as native playback engines, like Safari
- // may not have the proper values for things like seekableEnd until then
- this.on(this.player_, 'canplay', () => this.toggleTracking());
- }
-
- /**
- * all the functionality for tracking when seek end changes
- * and for tracking how far past seek end we should be
- */
- trackLive_() {
- const seekable = this.player_.seekable();
-
- // skip undefined seekable
- if (!seekable || !seekable.length) {
- return;
- }
- const newTime = Number(window.performance.now().toFixed(4));
- const deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;
- this.lastTime_ = newTime;
- this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;
- const liveCurrentTime = this.liveCurrentTime();
- const currentTime = this.player_.currentTime();
-
- // we are behind live if any are true
- // 1. the player is paused
- // 2. the user seeked to a location 2 seconds away from live
- // 3. the difference between live and current time is greater
- // liveTolerance which defaults to 15s
- let isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance;
-
- // we cannot be behind if
- // 1. until we have not seen a timeupdate yet
- // 2. liveCurrentTime is Infinity, which happens on Android and Native Safari
- if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {
- isBehind = false;
- }
- if (isBehind !== this.behindLiveEdge_) {
- this.behindLiveEdge_ = isBehind;
- this.trigger('liveedgechange');
- }
- }
-
- /**
- * handle a durationchange event on the player
- * and start/stop tracking accordingly.
- */
- handleDurationchange() {
- this.toggleTracking();
- }
-
- /**
- * start/stop tracking
- */
- toggleTracking() {
- if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {
- if (this.player_.options_.liveui) {
- this.player_.addClass('vjs-liveui');
- }
- this.startTracking();
- } else {
- this.player_.removeClass('vjs-liveui');
- this.stopTracking();
- }
- }
-
- /**
- * start tracking live playback
- */
- startTracking() {
- if (this.isTracking()) {
- return;
- }
-
- // If we haven't seen a timeupdate, we need to check whether playback
- // began before this component started tracking. This can happen commonly
- // when using autoplay.
- if (!this.timeupdateSeen_) {
- this.timeupdateSeen_ = this.player_.hasStarted();
- }
- this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);
- this.trackLive_();
- this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);
- if (!this.timeupdateSeen_) {
- this.one(this.player_, 'play', this.handlePlay_);
- this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
- } else {
- this.on(this.player_, 'seeked', this.handleSeeked_);
- }
- }
-
- /**
- * handle the first timeupdate on the player if it wasn't already playing
- * when live tracker started tracking.
- */
- handleFirstTimeupdate() {
- this.timeupdateSeen_ = true;
- this.on(this.player_, 'seeked', this.handleSeeked_);
- }
-
- /**
- * Keep track of what time a seek starts, and listen for seeked
- * to find where a seek ends.
- */
- handleSeeked() {
- const timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());
- this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;
- this.nextSeekedFromUser_ = false;
- this.trackLive_();
- }
-
- /**
- * handle the first play on the player, and make sure that we seek
- * right to the live edge.
- */
- handlePlay() {
- this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);
- }
-
- /**
- * Stop tracking, and set all internal variables to
- * their initial value.
- */
- reset_() {
- this.lastTime_ = -1;
- this.pastSeekEnd_ = 0;
- this.lastSeekEnd_ = -1;
- this.behindLiveEdge_ = true;
- this.timeupdateSeen_ = false;
- this.seekedBehindLive_ = false;
- this.nextSeekedFromUser_ = false;
- this.clearInterval(this.trackingInterval_);
- this.trackingInterval_ = null;
- this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);
- this.off(this.player_, 'seeked', this.handleSeeked_);
- this.off(this.player_, 'play', this.handlePlay_);
- this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
- this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);
- }
-
- /**
- * The next seeked event is from the user. Meaning that any seek
- * > 2s behind live will be considered behind live for real and
- * liveTolerance will be ignored.
- */
- nextSeekedFromUser() {
- this.nextSeekedFromUser_ = true;
- }
-
- /**
- * stop tracking live playback
- */
- stopTracking() {
- if (!this.isTracking()) {
- return;
- }
- this.reset_();
- this.trigger('liveedgechange');
- }
-
- /**
- * A helper to get the player seekable end
- * so that we don't have to null check everywhere
- *
- * @return {number}
- * The furthest seekable end or Infinity.
- */
- seekableEnd() {
- const seekable = this.player_.seekable();
- const seekableEnds = [];
- let i = seekable ? seekable.length : 0;
- while (i--) {
- seekableEnds.push(seekable.end(i));
- }
-
- // grab the furthest seekable end after sorting, or if there are none
- // default to Infinity
- return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;
- }
-
- /**
- * A helper to get the player seekable start
- * so that we don't have to null check everywhere
- *
- * @return {number}
- * The earliest seekable start or 0.
- */
- seekableStart() {
- const seekable = this.player_.seekable();
- const seekableStarts = [];
- let i = seekable ? seekable.length : 0;
- while (i--) {
- seekableStarts.push(seekable.start(i));
- }
-
- // grab the first seekable start after sorting, or if there are none
- // default to 0
- return seekableStarts.length ? seekableStarts.sort()[0] : 0;
- }
-
- /**
- * Get the live time window aka
- * the amount of time between seekable start and
- * live current time.
- *
- * @return {number}
- * The amount of seconds that are seekable in
- * the live video.
- */
- liveWindow() {
- const liveCurrentTime = this.liveCurrentTime();
-
- // if liveCurrenTime is Infinity then we don't have a liveWindow at all
- if (liveCurrentTime === Infinity) {
- return 0;
- }
- return liveCurrentTime - this.seekableStart();
- }
-
- /**
- * Determines if the player is live, only checks if this component
- * is tracking live playback or not
- *
- * @return {boolean}
- * Whether liveTracker is tracking
- */
- isLive() {
- return this.isTracking();
- }
-
- /**
- * Determines if currentTime is at the live edge and won't fall behind
- * on each seekableendchange
- *
- * @return {boolean}
- * Whether playback is at the live edge
- */
- atLiveEdge() {
- return !this.behindLiveEdge();
- }
-
- /**
- * get what we expect the live current time to be
- *
- * @return {number}
- * The expected live current time
- */
- liveCurrentTime() {
- return this.pastSeekEnd() + this.seekableEnd();
- }
-
- /**
- * The number of seconds that have occurred after seekable end
- * changed. This will be reset to 0 once seekable end changes.
- *
- * @return {number}
- * Seconds past the current seekable end
- */
- pastSeekEnd() {
- const seekableEnd = this.seekableEnd();
- if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {
- this.pastSeekEnd_ = 0;
- }
- this.lastSeekEnd_ = seekableEnd;
- return this.pastSeekEnd_;
- }
-
- /**
- * If we are currently behind the live edge, aka currentTime will be
- * behind on a seekableendchange
- *
- * @return {boolean}
- * If we are behind the live edge
- */
- behindLiveEdge() {
- return this.behindLiveEdge_;
- }
-
- /**
- * Whether live tracker is currently tracking or not.
- */
- isTracking() {
- return typeof this.trackingInterval_ === 'number';
- }
-
- /**
- * Seek to the live edge if we are behind the live edge
- */
- seekToLiveEdge() {
- this.seekedBehindLive_ = false;
- if (this.atLiveEdge()) {
- return;
- }
- this.nextSeekedFromUser_ = false;
- this.player_.currentTime(this.liveCurrentTime());
- }
-
- /**
- * Dispose of liveTracker
- */
- dispose() {
- this.stopTracking();
- super.dispose();
- }
- }
- Component$1.registerComponent('LiveTracker', LiveTracker);
-
- /**
- * Displays an element over the player which contains an optional title and
- * description for the current content.
- *
- * Much of the code for this component originated in the now obsolete
- * videojs-dock plugin: https://github.com/brightcove/videojs-dock/
- *
- * @extends Component
- */
- class TitleBar extends Component$1 {
- constructor(player, options) {
- super(player, options);
- this.on('statechanged', e => this.updateDom_());
- this.updateDom_();
- }
-
- /**
- * Create the `TitleBar`'s DOM element
- *
- * @return {Element}
- * The element that was created.
- */
- createEl() {
- this.els = {
- title: createEl('div', {
- className: 'vjs-title-bar-title',
- id: `vjs-title-bar-title-${newGUID()}`
- }),
- description: createEl('div', {
- className: 'vjs-title-bar-description',
- id: `vjs-title-bar-description-${newGUID()}`
- })
- };
- return createEl('div', {
- className: 'vjs-title-bar'
- }, {}, values$1(this.els));
- }
-
- /**
- * Updates the DOM based on the component's state object.
- */
- updateDom_() {
- const tech = this.player_.tech_;
- const techEl = tech && tech.el_;
- const techAriaAttrs = {
- title: 'aria-labelledby',
- description: 'aria-describedby'
- };
- ['title', 'description'].forEach(k => {
- const value = this.state[k];
- const el = this.els[k];
- const techAriaAttr = techAriaAttrs[k];
- emptyEl(el);
- if (value) {
- textContent(el, value);
- }
-
- // If there is a tech element available, update its ARIA attributes
- // according to whether a title and/or description have been provided.
- if (techEl) {
- techEl.removeAttribute(techAriaAttr);
- if (value) {
- techEl.setAttribute(techAriaAttr, el.id);
- }
- }
- });
- if (this.state.title || this.state.description) {
- this.show();
- } else {
- this.hide();
- }
- }
-
- /**
- * Update the contents of the title bar component with new title and
- * description text.
- *
- * If both title and description are missing, the title bar will be hidden.
- *
- * If either title or description are present, the title bar will be visible.
- *
- * NOTE: Any previously set value will be preserved. To unset a previously
- * set value, you must pass an empty string or null.
- *
- * For example:
- *
- * ```
- * update({title: 'foo', description: 'bar'}) // title: 'foo', description: 'bar'
- * update({description: 'bar2'}) // title: 'foo', description: 'bar2'
- * update({title: ''}) // title: '', description: 'bar2'
- * update({title: 'foo', description: null}) // title: 'foo', description: null
- * ```
- *
- * @param {Object} [options={}]
- * An options object. When empty, the title bar will be hidden.
- *
- * @param {string} [options.title]
- * A title to display in the title bar.
- *
- * @param {string} [options.description]
- * A description to display in the title bar.
- */
- update(options) {
- this.setState(options);
- }
-
- /**
- * Dispose the component.
- */
- dispose() {
- const tech = this.player_.tech_;
- const techEl = tech && tech.el_;
- if (techEl) {
- techEl.removeAttribute('aria-labelledby');
- techEl.removeAttribute('aria-describedby');
- }
- super.dispose();
- this.els = null;
- }
- }
- Component$1.registerComponent('TitleBar', TitleBar);
-
- /**
- * This function is used to fire a sourceset when there is something
- * similar to `mediaEl.load()` being called. It will try to find the source via
- * the `src` attribute and then the `<source>` elements. It will then fire `sourceset`
- * with the source that was found or empty string if we cannot know. If it cannot
- * find a source then `sourceset` will not be fired.
- *
- * @param { import('./html5').default } tech
- * The tech object that sourceset was setup on
- *
- * @return {boolean}
- * returns false if the sourceset was not fired and true otherwise.
- */
- const sourcesetLoad = tech => {
- const el = tech.el();
-
- // if `el.src` is set, that source will be loaded.
- if (el.hasAttribute('src')) {
- tech.triggerSourceset(el.src);
- return true;
- }
-
- /**
- * Since there isn't a src property on the media element, source elements will be used for
- * implementing the source selection algorithm. This happens asynchronously and
- * for most cases were there is more than one source we cannot tell what source will
- * be loaded, without re-implementing the source selection algorithm. At this time we are not
- * going to do that. There are three special cases that we do handle here though:
- *
- * 1. If there are no sources, do not fire `sourceset`.
- * 2. If there is only one `<source>` with a `src` property/attribute that is our `src`
- * 3. If there is more than one `<source>` but all of them have the same `src` url.
- * That will be our src.
- */
- const sources = tech.$$('source');
- const srcUrls = [];
- let src = '';
-
- // if there are no sources, do not fire sourceset
- if (!sources.length) {
- return false;
- }
-
- // only count valid/non-duplicate source elements
- for (let i = 0; i < sources.length; i++) {
- const url = sources[i].src;
- if (url && srcUrls.indexOf(url) === -1) {
- srcUrls.push(url);
- }
- }
-
- // there were no valid sources
- if (!srcUrls.length) {
- return false;
- }
-
- // there is only one valid source element url
- // use that
- if (srcUrls.length === 1) {
- src = srcUrls[0];
- }
- tech.triggerSourceset(src);
- return true;
- };
-
- /**
- * our implementation of an `innerHTML` descriptor for browsers
- * that do not have one.
- */
- const innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {
- get() {
- return this.cloneNode(true).innerHTML;
- },
- set(v) {
- // make a dummy node to use innerHTML on
- const dummy = document.createElement(this.nodeName.toLowerCase());
-
- // set innerHTML to the value provided
- dummy.innerHTML = v;
-
- // make a document fragment to hold the nodes from dummy
- const docFrag = document.createDocumentFragment();
-
- // copy all of the nodes created by the innerHTML on dummy
- // to the document fragment
- while (dummy.childNodes.length) {
- docFrag.appendChild(dummy.childNodes[0]);
- }
-
- // remove content
- this.innerText = '';
-
- // now we add all of that html in one by appending the
- // document fragment. This is how innerHTML does it.
- window.Element.prototype.appendChild.call(this, docFrag);
-
- // then return the result that innerHTML's setter would
- return this.innerHTML;
- }
- });
-
- /**
- * Get a property descriptor given a list of priorities and the
- * property to get.
- */
- const getDescriptor = (priority, prop) => {
- let descriptor = {};
- for (let i = 0; i < priority.length; i++) {
- descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);
- if (descriptor && descriptor.set && descriptor.get) {
- break;
- }
- }
- descriptor.enumerable = true;
- descriptor.configurable = true;
- return descriptor;
- };
- const getInnerHTMLDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, window.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');
-
- /**
- * Patches browser internal functions so that we can tell synchronously
- * if a `<source>` was appended to the media element. For some reason this
- * causes a `sourceset` if the the media element is ready and has no source.
- * This happens when:
- * - The page has just loaded and the media element does not have a source.
- * - The media element was emptied of all sources, then `load()` was called.
- *
- * It does this by patching the following functions/properties when they are supported:
- *
- * - `append()` - can be used to add a `<source>` element to the media element
- * - `appendChild()` - can be used to add a `<source>` element to the media element
- * - `insertAdjacentHTML()` - can be used to add a `<source>` element to the media element
- * - `innerHTML` - can be used to add a `<source>` element to the media element
- *
- * @param {Html5} tech
- * The tech object that sourceset is being setup on.
- */
- const firstSourceWatch = function (tech) {
- const el = tech.el();
-
- // make sure firstSourceWatch isn't setup twice.
- if (el.resetSourceWatch_) {
- return;
- }
- const old = {};
- const innerDescriptor = getInnerHTMLDescriptor(tech);
- const appendWrapper = appendFn => (...args) => {
- const retval = appendFn.apply(el, args);
- sourcesetLoad(tech);
- return retval;
- };
- ['append', 'appendChild', 'insertAdjacentHTML'].forEach(k => {
- if (!el[k]) {
- return;
- }
-
- // store the old function
- old[k] = el[k];
-
- // call the old function with a sourceset if a source
- // was loaded
- el[k] = appendWrapper(old[k]);
- });
- Object.defineProperty(el, 'innerHTML', merge$2(innerDescriptor, {
- set: appendWrapper(innerDescriptor.set)
- }));
- el.resetSourceWatch_ = () => {
- el.resetSourceWatch_ = null;
- Object.keys(old).forEach(k => {
- el[k] = old[k];
- });
- Object.defineProperty(el, 'innerHTML', innerDescriptor);
- };
-
- // on the first sourceset, we need to revert our changes
- tech.one('sourceset', el.resetSourceWatch_);
- };
-
- /**
- * our implementation of a `src` descriptor for browsers
- * that do not have one
- */
- const srcDescriptorPolyfill = Object.defineProperty({}, 'src', {
- get() {
- if (this.hasAttribute('src')) {
- return getAbsoluteURL(window.Element.prototype.getAttribute.call(this, 'src'));
- }
- return '';
- },
- set(v) {
- window.Element.prototype.setAttribute.call(this, 'src', v);
- return v;
- }
- });
- const getSrcDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');
-
- /**
- * setup `sourceset` handling on the `Html5` tech. This function
- * patches the following element properties/functions:
- *
- * - `src` - to determine when `src` is set
- * - `setAttribute()` - to determine when `src` is set
- * - `load()` - this re-triggers the source selection algorithm, and can
- * cause a sourceset.
- *
- * If there is no source when we are adding `sourceset` support or during a `load()`
- * we also patch the functions listed in `firstSourceWatch`.
- *
- * @param {Html5} tech
- * The tech to patch
- */
- const setupSourceset = function (tech) {
- if (!tech.featuresSourceset) {
- return;
- }
- const el = tech.el();
-
- // make sure sourceset isn't setup twice.
- if (el.resetSourceset_) {
- return;
- }
- const srcDescriptor = getSrcDescriptor(tech);
- const oldSetAttribute = el.setAttribute;
- const oldLoad = el.load;
- Object.defineProperty(el, 'src', merge$2(srcDescriptor, {
- set: v => {
- const retval = srcDescriptor.set.call(el, v);
-
- // we use the getter here to get the actual value set on src
- tech.triggerSourceset(el.src);
- return retval;
- }
- }));
- el.setAttribute = (n, v) => {
- const retval = oldSetAttribute.call(el, n, v);
- if (/src/i.test(n)) {
- tech.triggerSourceset(el.src);
- }
- return retval;
- };
- el.load = () => {
- const retval = oldLoad.call(el);
-
- // if load was called, but there was no source to fire
- // sourceset on. We have to watch for a source append
- // as that can trigger a `sourceset` when the media element
- // has no source
- if (!sourcesetLoad(tech)) {
- tech.triggerSourceset('');
- firstSourceWatch(tech);
- }
- return retval;
- };
- if (el.currentSrc) {
- tech.triggerSourceset(el.currentSrc);
- } else if (!sourcesetLoad(tech)) {
- firstSourceWatch(tech);
- }
- el.resetSourceset_ = () => {
- el.resetSourceset_ = null;
- el.load = oldLoad;
- el.setAttribute = oldSetAttribute;
- Object.defineProperty(el, 'src', srcDescriptor);
- if (el.resetSourceWatch_) {
- el.resetSourceWatch_();
- }
- };
- };
-
- /**
- * @file html5.js
- */
-
- /**
- * HTML5 Media Controller - Wrapper for HTML5 Media API
- *
- * @mixes Tech~SourceHandlerAdditions
- * @extends Tech
- */
- class Html5 extends Tech {
- /**
- * Create an instance of this Tech.
- *
- * @param {Object} [options]
- * The key/value store of player options.
- *
- * @param {Function} [ready]
- * Callback function to call when the `HTML5` Tech is ready.
- */
- constructor(options, ready) {
- super(options, ready);
- const source = options.source;
- let crossoriginTracks = false;
- this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';
-
- // Set the source if one is provided
- // 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)
- // 2) Check to see if the network state of the tag was failed at init, and if so, reset the source
- // anyway so the error gets fired.
- if (source && (this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {
- this.setSource(source);
- } else {
- this.handleLateInit_(this.el_);
- }
-
- // setup sourceset after late sourceset/init
- if (options.enableSourceset) {
- this.setupSourcesetHandling_();
- }
- this.isScrubbing_ = false;
- if (this.el_.hasChildNodes()) {
- const nodes = this.el_.childNodes;
- let nodesLength = nodes.length;
- const removeNodes = [];
- while (nodesLength--) {
- const node = nodes[nodesLength];
- const nodeName = node.nodeName.toLowerCase();
- if (nodeName === 'track') {
- if (!this.featuresNativeTextTracks) {
- // Empty video tag tracks so the built-in player doesn't use them also.
- // This may not be fast enough to stop HTML5 browsers from reading the tags
- // so we'll need to turn off any default tracks if we're manually doing
- // captions and subtitles. videoElement.textTracks
- removeNodes.push(node);
- } else {
- // store HTMLTrackElement and TextTrack to remote list
- this.remoteTextTrackEls().addTrackElement_(node);
- this.remoteTextTracks().addTrack(node.track);
- this.textTracks().addTrack(node.track);
- if (!crossoriginTracks && !this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {
- crossoriginTracks = true;
- }
- }
- }
- }
- for (let i = 0; i < removeNodes.length; i++) {
- this.el_.removeChild(removeNodes[i]);
- }
- }
- this.proxyNativeTracks_();
- if (this.featuresNativeTextTracks && crossoriginTracks) {
- log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n' + 'This may prevent text tracks from loading.');
- }
-
- // prevent iOS Safari from disabling metadata text tracks during native playback
- this.restoreMetadataTracksInIOSNativePlayer_();
-
- // Determine if native controls should be used
- // Our goal should be to get the custom controls on mobile solid everywhere
- // so we can remove this all together. Right now this will block custom
- // controls on touch enabled laptops like the Chrome Pixel
- if ((TOUCH_ENABLED || IS_IPHONE) && options.nativeControlsForTouch === true) {
- this.setControls(true);
- }
-
- // on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`
- // into a `fullscreenchange` event
- this.proxyWebkitFullscreen_();
- this.triggerReady();
- }
-
- /**
- * Dispose of `HTML5` media element and remove all tracks.
- */
- dispose() {
- if (this.el_ && this.el_.resetSourceset_) {
- this.el_.resetSourceset_();
- }
- Html5.disposeMediaElement(this.el_);
- this.options_ = null;
-
- // tech will handle clearing of the emulated track list
- super.dispose();
- }
-
- /**
- * Modify the media element so that we can detect when
- * the source is changed. Fires `sourceset` just after the source has changed
- */
- setupSourcesetHandling_() {
- setupSourceset(this);
- }
-
- /**
- * When a captions track is enabled in the iOS Safari native player, all other
- * tracks are disabled (including metadata tracks), which nulls all of their
- * associated cue points. This will restore metadata tracks to their pre-fullscreen
- * state in those cases so that cue points are not needlessly lost.
- *
- * @private
- */
- restoreMetadataTracksInIOSNativePlayer_() {
- const textTracks = this.textTracks();
- let metadataTracksPreFullscreenState;
-
- // captures a snapshot of every metadata track's current state
- const takeMetadataTrackSnapshot = () => {
- metadataTracksPreFullscreenState = [];
- for (let i = 0; i < textTracks.length; i++) {
- const track = textTracks[i];
- if (track.kind === 'metadata') {
- metadataTracksPreFullscreenState.push({
- track,
- storedMode: track.mode
- });
- }
- }
- };
-
- // snapshot each metadata track's initial state, and update the snapshot
- // each time there is a track 'change' event
- takeMetadataTrackSnapshot();
- textTracks.addEventListener('change', takeMetadataTrackSnapshot);
- this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));
- const restoreTrackMode = () => {
- for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {
- const storedTrack = metadataTracksPreFullscreenState[i];
- if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {
- storedTrack.track.mode = storedTrack.storedMode;
- }
- }
- // we only want this handler to be executed on the first 'change' event
- textTracks.removeEventListener('change', restoreTrackMode);
- };
-
- // when we enter fullscreen playback, stop updating the snapshot and
- // restore all track modes to their pre-fullscreen state
- this.on('webkitbeginfullscreen', () => {
- textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
-
- // remove the listener before adding it just in case it wasn't previously removed
- textTracks.removeEventListener('change', restoreTrackMode);
- textTracks.addEventListener('change', restoreTrackMode);
- });
-
- // start updating the snapshot again after leaving fullscreen
- this.on('webkitendfullscreen', () => {
- // remove the listener before adding it just in case it wasn't previously removed
- textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
- textTracks.addEventListener('change', takeMetadataTrackSnapshot);
-
- // remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback
- textTracks.removeEventListener('change', restoreTrackMode);
- });
- }
-
- /**
- * Attempt to force override of tracks for the given type
- *
- * @param {string} type - Track type to override, possible values include 'Audio',
- * 'Video', and 'Text'.
- * @param {boolean} override - If set to true native audio/video will be overridden,
- * otherwise native audio/video will potentially be used.
- * @private
- */
- overrideNative_(type, override) {
- // If there is no behavioral change don't add/remove listeners
- if (override !== this[`featuresNative${type}Tracks`]) {
- return;
- }
- const lowerCaseType = type.toLowerCase();
- if (this[`${lowerCaseType}TracksListeners_`]) {
- Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach(eventName => {
- const elTracks = this.el()[`${lowerCaseType}Tracks`];
- elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);
- });
- }
- this[`featuresNative${type}Tracks`] = !override;
- this[`${lowerCaseType}TracksListeners_`] = null;
- this.proxyNativeTracksForType_(lowerCaseType);
- }
-
- /**
- * Attempt to force override of native audio tracks.
- *
- * @param {boolean} override - If set to true native audio will be overridden,
- * otherwise native audio will potentially be used.
- */
- overrideNativeAudioTracks(override) {
- this.overrideNative_('Audio', override);
- }
-
- /**
- * Attempt to force override of native video tracks.
- *
- * @param {boolean} override - If set to true native video will be overridden,
- * otherwise native video will potentially be used.
- */
- overrideNativeVideoTracks(override) {
- this.overrideNative_('Video', override);
- }
-
- /**
- * Proxy native track list events for the given type to our track
- * lists if the browser we are playing in supports that type of track list.
- *
- * @param {string} name - Track type; values include 'audio', 'video', and 'text'
- * @private
- */
- proxyNativeTracksForType_(name) {
- const props = NORMAL[name];
- const elTracks = this.el()[props.getterName];
- const techTracks = this[props.getterName]();
- if (!this[`featuresNative${props.capitalName}Tracks`] || !elTracks || !elTracks.addEventListener) {
- return;
- }
- const listeners = {
- change: e => {
- const event = {
- type: 'change',
- target: techTracks,
- currentTarget: techTracks,
- srcElement: techTracks
- };
- techTracks.trigger(event);
-
- // if we are a text track change event, we should also notify the
- // remote text track list. This can potentially cause a false positive
- // if we were to get a change event on a non-remote track and
- // we triggered the event on the remote text track list which doesn't
- // contain that track. However, best practices mean looping through the
- // list of tracks and searching for the appropriate mode value, so,
- // this shouldn't pose an issue
- if (name === 'text') {
- this[REMOTE.remoteText.getterName]().trigger(event);
- }
- },
- addtrack(e) {
- techTracks.addTrack(e.track);
- },
- removetrack(e) {
- techTracks.removeTrack(e.track);
- }
- };
- const removeOldTracks = function () {
- const removeTracks = [];
- for (let i = 0; i < techTracks.length; i++) {
- let found = false;
- for (let j = 0; j < elTracks.length; j++) {
- if (elTracks[j] === techTracks[i]) {
- found = true;
- break;
- }
- }
- if (!found) {
- removeTracks.push(techTracks[i]);
- }
- }
- while (removeTracks.length) {
- techTracks.removeTrack(removeTracks.shift());
- }
- };
- this[props.getterName + 'Listeners_'] = listeners;
- Object.keys(listeners).forEach(eventName => {
- const listener = listeners[eventName];
- elTracks.addEventListener(eventName, listener);
- this.on('dispose', e => elTracks.removeEventListener(eventName, listener));
- });
-
- // Remove (native) tracks that are not used anymore
- this.on('loadstart', removeOldTracks);
- this.on('dispose', e => this.off('loadstart', removeOldTracks));
- }
-
- /**
- * Proxy all native track list events to our track lists if the browser we are playing
- * in supports that type of track list.
- *
- * @private
- */
- proxyNativeTracks_() {
- NORMAL.names.forEach(name => {
- this.proxyNativeTracksForType_(name);
- });
- }
-
- /**
- * Create the `Html5` Tech's DOM element.
- *
- * @return {Element}
- * The element that gets created.
- */
- createEl() {
- let el = this.options_.tag;
-
- // Check if this browser supports moving the element into the box.
- // On the iPhone video will break if you move the element,
- // So we have to create a brand new element.
- // If we ingested the player div, we do not need to move the media element.
- if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {
- // If the original tag is still there, clone and remove it.
- if (el) {
- const clone = el.cloneNode(true);
- if (el.parentNode) {
- el.parentNode.insertBefore(clone, el);
- }
- Html5.disposeMediaElement(el);
- el = clone;
- } else {
- el = document.createElement('video');
-
- // determine if native controls should be used
- const tagAttributes = this.options_.tag && getAttributes(this.options_.tag);
- const attributes = merge$2({}, tagAttributes);
- if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {
- delete attributes.controls;
- }
- setAttributes(el, Object.assign(attributes, {
- id: this.options_.techId,
- class: 'vjs-tech'
- }));
- }
- el.playerId = this.options_.playerId;
- }
- if (typeof this.options_.preload !== 'undefined') {
- setAttribute(el, 'preload', this.options_.preload);
- }
- if (this.options_.disablePictureInPicture !== undefined) {
- el.disablePictureInPicture = this.options_.disablePictureInPicture;
- }
-
- // Update specific tag settings, in case they were overridden
- // `autoplay` has to be *last* so that `muted` and `playsinline` are present
- // when iOS/Safari or other browsers attempt to autoplay.
- const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];
- for (let i = 0; i < settingsAttrs.length; i++) {
- const attr = settingsAttrs[i];
- const value = this.options_[attr];
- if (typeof value !== 'undefined') {
- if (value) {
- setAttribute(el, attr, attr);
- } else {
- removeAttribute(el, attr);
- }
- el[attr] = value;
- }
- }
- return el;
- }
-
- /**
- * This will be triggered if the loadstart event has already fired, before videojs was
- * ready. Two known examples of when this can happen are:
- * 1. If we're loading the playback object after it has started loading
- * 2. The media is already playing the (often with autoplay on) then
- *
- * This function will fire another loadstart so that videojs can catchup.
- *
- * @fires Tech#loadstart
- *
- * @return {undefined}
- * returns nothing.
- */
- handleLateInit_(el) {
- if (el.networkState === 0 || el.networkState === 3) {
- // The video element hasn't started loading the source yet
- // or didn't find a source
- return;
- }
- if (el.readyState === 0) {
- // NetworkState is set synchronously BUT loadstart is fired at the
- // end of the current stack, usually before setInterval(fn, 0).
- // So at this point we know loadstart may have already fired or is
- // about to fire, and either way the player hasn't seen it yet.
- // We don't want to fire loadstart prematurely here and cause a
- // double loadstart so we'll wait and see if it happens between now
- // and the next loop, and fire it if not.
- // HOWEVER, we also want to make sure it fires before loadedmetadata
- // which could also happen between now and the next loop, so we'll
- // watch for that also.
- let loadstartFired = false;
- const setLoadstartFired = function () {
- loadstartFired = true;
- };
- this.on('loadstart', setLoadstartFired);
- const triggerLoadstart = function () {
- // We did miss the original loadstart. Make sure the player
- // sees loadstart before loadedmetadata
- if (!loadstartFired) {
- this.trigger('loadstart');
- }
- };
- this.on('loadedmetadata', triggerLoadstart);
- this.ready(function () {
- this.off('loadstart', setLoadstartFired);
- this.off('loadedmetadata', triggerLoadstart);
- if (!loadstartFired) {
- // We did miss the original native loadstart. Fire it now.
- this.trigger('loadstart');
- }
- });
- return;
- }
-
- // From here on we know that loadstart already fired and we missed it.
- // The other readyState events aren't as much of a problem if we double
- // them, so not going to go to as much trouble as loadstart to prevent
- // that unless we find reason to.
- const eventsToTrigger = ['loadstart'];
-
- // loadedmetadata: newly equal to HAVE_METADATA (1) or greater
- eventsToTrigger.push('loadedmetadata');
-
- // loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater
- if (el.readyState >= 2) {
- eventsToTrigger.push('loadeddata');
- }
-
- // canplay: newly increased to HAVE_FUTURE_DATA (3) or greater
- if (el.readyState >= 3) {
- eventsToTrigger.push('canplay');
- }
-
- // canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)
- if (el.readyState >= 4) {
- eventsToTrigger.push('canplaythrough');
- }
-
- // We still need to give the player time to add event listeners
- this.ready(function () {
- eventsToTrigger.forEach(function (type) {
- this.trigger(type);
- }, this);
- });
- }
-
- /**
- * Set whether we are scrubbing or not.
- * This is used to decide whether we should use `fastSeek` or not.
- * `fastSeek` is used to provide trick play on Safari browsers.
- *
- * @param {boolean} isScrubbing
- * - true for we are currently scrubbing
- * - false for we are no longer scrubbing
- */
- setScrubbing(isScrubbing) {
- this.isScrubbing_ = isScrubbing;
- }
-
- /**
- * Get whether we are scrubbing or not.
- *
- * @return {boolean} isScrubbing
- * - true for we are currently scrubbing
- * - false for we are no longer scrubbing
- */
- scrubbing() {
- return this.isScrubbing_;
- }
-
- /**
- * Set current time for the `HTML5` tech.
- *
- * @param {number} seconds
- * Set the current time of the media to this.
- */
- setCurrentTime(seconds) {
- try {
- if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {
- this.el_.fastSeek(seconds);
- } else {
- this.el_.currentTime = seconds;
- }
- } catch (e) {
- log$1(e, 'Video is not ready. (Video.js)');
- // this.warning(VideoJS.warnings.videoNotReady);
- }
- }
-
- /**
- * Get the current duration of the HTML5 media element.
- *
- * @return {number}
- * The duration of the media or 0 if there is no duration.
- */
- duration() {
- // Android Chrome will report duration as Infinity for VOD HLS until after
- // playback has started, which triggers the live display erroneously.
- // Return NaN if playback has not started and trigger a durationupdate once
- // the duration can be reliably known.
- if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {
- // Wait for the first `timeupdate` with currentTime > 0 - there may be
- // several with 0
- const checkProgress = () => {
- if (this.el_.currentTime > 0) {
- // Trigger durationchange for genuinely live video
- if (this.el_.duration === Infinity) {
- this.trigger('durationchange');
- }
- this.off('timeupdate', checkProgress);
- }
- };
- this.on('timeupdate', checkProgress);
- return NaN;
- }
- return this.el_.duration || NaN;
- }
-
- /**
- * Get the current width of the HTML5 media element.
- *
- * @return {number}
- * The width of the HTML5 media element.
- */
- width() {
- return this.el_.offsetWidth;
- }
-
- /**
- * Get the current height of the HTML5 media element.
- *
- * @return {number}
- * The height of the HTML5 media element.
- */
- height() {
- return this.el_.offsetHeight;
- }
-
- /**
- * Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into
- * `fullscreenchange` event.
- *
- * @private
- * @fires fullscreenchange
- * @listens webkitendfullscreen
- * @listens webkitbeginfullscreen
- * @listens webkitbeginfullscreen
- */
- proxyWebkitFullscreen_() {
- if (!('webkitDisplayingFullscreen' in this.el_)) {
- return;
- }
- const endFn = function () {
- this.trigger('fullscreenchange', {
- isFullscreen: false
- });
- // Safari will sometimes set controls on the videoelement when existing fullscreen.
- if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {
- this.el_.controls = false;
- }
- };
- const beginFn = function () {
- if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {
- this.one('webkitendfullscreen', endFn);
- this.trigger('fullscreenchange', {
- isFullscreen: true,
- // set a flag in case another tech triggers fullscreenchange
- nativeIOSFullscreen: true
- });
- }
- };
- this.on('webkitbeginfullscreen', beginFn);
- this.on('dispose', () => {
- this.off('webkitbeginfullscreen', beginFn);
- this.off('webkitendfullscreen', endFn);
- });
- }
-
- /**
- * Check if fullscreen is supported on the video el.
- *
- * @return {boolean}
- * - True if fullscreen is supported.
- * - False if fullscreen is not supported.
- */
- supportsFullScreen() {
- return typeof this.el_.webkitEnterFullScreen === 'function';
- }
-
- /**
- * Request that the `HTML5` Tech enter fullscreen.
- */
- enterFullScreen() {
- const video = this.el_;
- if (video.paused && video.networkState <= video.HAVE_METADATA) {
- // attempt to prime the video element for programmatic access
- // this isn't necessary on the desktop but shouldn't hurt
- silencePromise(this.el_.play());
-
- // playing and pausing synchronously during the transition to fullscreen
- // can get iOS ~6.1 devices into a play/pause loop
- this.setTimeout(function () {
- video.pause();
- try {
- video.webkitEnterFullScreen();
- } catch (e) {
- this.trigger('fullscreenerror', e);
- }
- }, 0);
- } else {
- try {
- video.webkitEnterFullScreen();
- } catch (e) {
- this.trigger('fullscreenerror', e);
- }
- }
- }
-
- /**
- * Request that the `HTML5` Tech exit fullscreen.
- */
- exitFullScreen() {
- if (!this.el_.webkitDisplayingFullscreen) {
- this.trigger('fullscreenerror', new Error('The video is not fullscreen'));
- return;
- }
- this.el_.webkitExitFullScreen();
- }
-
- /**
- * Create a floating video window always on top of other windows so that users may
- * continue consuming media while they interact with other content sites, or
- * applications on their device.
- *
- * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
- *
- * @return {Promise}
- * A promise with a Picture-in-Picture window.
- */
- requestPictureInPicture() {
- return this.el_.requestPictureInPicture();
- }
-
- /**
- * Native requestVideoFrameCallback if supported by browser/tech, or fallback
- * Don't use rVCF on Safari when DRM is playing, as it doesn't fire
- * Needs to be checked later than the constructor
- * This will be a false positive for clear sources loaded after a Fairplay source
- *
- * @param {function} cb function to call
- * @return {number} id of request
- */
- requestVideoFrameCallback(cb) {
- if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
- return this.el_.requestVideoFrameCallback(cb);
- }
- return super.requestVideoFrameCallback(cb);
- }
-
- /**
- * Native or fallback requestVideoFrameCallback
- *
- * @param {number} id request id to cancel
- */
- cancelVideoFrameCallback(id) {
- if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
- this.el_.cancelVideoFrameCallback(id);
- } else {
- super.cancelVideoFrameCallback(id);
- }
- }
-
- /**
- * A getter/setter for the `Html5` Tech's source object.
- * > Note: Please use {@link Html5#setSource}
- *
- * @param {Tech~SourceObject} [src]
- * The source object you want to set on the `HTML5` techs element.
- *
- * @return {Tech~SourceObject|undefined}
- * - The current source object when a source is not passed in.
- * - undefined when setting
- *
- * @deprecated Since version 5.
- */
- src(src) {
- if (src === undefined) {
- return this.el_.src;
- }
-
- // Setting src through `src` instead of `setSrc` will be deprecated
- this.setSrc(src);
- }
-
- /**
- * Reset the tech by removing all sources and then calling
- * {@link Html5.resetMediaElement}.
- */
- reset() {
- Html5.resetMediaElement(this.el_);
- }
-
- /**
- * Get the current source on the `HTML5` Tech. Falls back to returning the source from
- * the HTML5 media element.
- *
- * @return {Tech~SourceObject}
- * The current source object from the HTML5 tech. With a fallback to the
- * elements source.
- */
- currentSrc() {
- if (this.currentSource_) {
- return this.currentSource_.src;
- }
- return this.el_.currentSrc;
- }
-
- /**
- * Set controls attribute for the HTML5 media Element.
- *
- * @param {string} val
- * Value to set the controls attribute to
- */
- setControls(val) {
- this.el_.controls = !!val;
- }
-
- /**
- * Create and returns a remote {@link TextTrack} object.
- *
- * @param {string} kind
- * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
- *
- * @param {string} [label]
- * Label to identify the text track
- *
- * @param {string} [language]
- * Two letter language abbreviation
- *
- * @return {TextTrack}
- * The TextTrack that gets created.
- */
- addTextTrack(kind, label, language) {
- if (!this.featuresNativeTextTracks) {
- return super.addTextTrack(kind, label, language);
- }
- return this.el_.addTextTrack(kind, label, language);
- }
-
- /**
- * Creates either native TextTrack or an emulated TextTrack depending
- * on the value of `featuresNativeTextTracks`
- *
- * @param {Object} options
- * The object should contain the options to initialize the TextTrack with.
- *
- * @param {string} [options.kind]
- * `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
- *
- * @param {string} [options.label]
- * Label to identify the text track
- *
- * @param {string} [options.language]
- * Two letter language abbreviation.
- *
- * @param {boolean} [options.default]
- * Default this track to on.
- *
- * @param {string} [options.id]
- * The internal id to assign this track.
- *
- * @param {string} [options.src]
- * A source url for the track.
- *
- * @return {HTMLTrackElement}
- * The track element that gets created.
- */
- createRemoteTextTrack(options) {
- if (!this.featuresNativeTextTracks) {
- return super.createRemoteTextTrack(options);
- }
- const htmlTrackElement = document.createElement('track');
- if (options.kind) {
- htmlTrackElement.kind = options.kind;
- }
- if (options.label) {
- htmlTrackElement.label = options.label;
- }
- if (options.language || options.srclang) {
- htmlTrackElement.srclang = options.language || options.srclang;
- }
- if (options.default) {
- htmlTrackElement.default = options.default;
- }
- if (options.id) {
- htmlTrackElement.id = options.id;
- }
- if (options.src) {
- htmlTrackElement.src = options.src;
- }
- return htmlTrackElement;
- }
-
- /**
- * Creates a remote text track object and returns an html track element.
- *
- * @param {Object} options The object should contain values for
- * kind, language, label, and src (location of the WebVTT file)
- * @param {boolean} [manualCleanup=false] if set to true, the TextTrack
- * will not be removed from the TextTrackList and HtmlTrackElementList
- * after a source change
- * @return {HTMLTrackElement} An Html Track Element.
- * This can be an emulated {@link HTMLTrackElement} or a native one.
- *
- */
- addRemoteTextTrack(options, manualCleanup) {
- const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);
- if (this.featuresNativeTextTracks) {
- this.el().appendChild(htmlTrackElement);
- }
- return htmlTrackElement;
- }
-
- /**
- * Remove remote `TextTrack` from `TextTrackList` object
- *
- * @param {TextTrack} track
- * `TextTrack` object to remove
- */
- removeRemoteTextTrack(track) {
- super.removeRemoteTextTrack(track);
- if (this.featuresNativeTextTracks) {
- const tracks = this.$$('track');
- let i = tracks.length;
- while (i--) {
- if (track === tracks[i] || track === tracks[i].track) {
- this.el().removeChild(tracks[i]);
- }
- }
- }
- }
-
- /**
- * Gets available media playback quality metrics as specified by the W3C's Media
- * Playback Quality API.
- *
- * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
- *
- * @return {Object}
- * An object with supported media playback quality metrics
- */
- getVideoPlaybackQuality() {
- if (typeof this.el().getVideoPlaybackQuality === 'function') {
- return this.el().getVideoPlaybackQuality();
- }
- const videoPlaybackQuality = {};
- if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {
- videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;
- videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;
- }
- if (window.performance) {
- videoPlaybackQuality.creationTime = window.performance.now();
- }
- return videoPlaybackQuality;
- }
- }
-
- /* HTML5 Support Testing ---------------------------------------------------- */
-
- /**
- * Element for testing browser HTML5 media capabilities
- *
- * @type {Element}
- * @constant
- * @private
- */
- defineLazyProperty(Html5, 'TEST_VID', function () {
- if (!isReal()) {
- return;
- }
- const video = document.createElement('video');
- const track = document.createElement('track');
- track.kind = 'captions';
- track.srclang = 'en';
- track.label = 'English';
- video.appendChild(track);
- return video;
- });
-
- /**
- * Check if HTML5 media is supported by this browser/device.
- *
- * @return {boolean}
- * - True if HTML5 media is supported.
- * - False if HTML5 media is not supported.
- */
- Html5.isSupported = function () {
- // IE with no Media Player is a LIAR! (#984)
- try {
- Html5.TEST_VID.volume = 0.5;
- } catch (e) {
- return false;
- }
- return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);
- };
-
- /**
- * Check if the tech can support the given type
- *
- * @param {string} type
- * The mimetype to check
- * @return {string} 'probably', 'maybe', or '' (empty string)
- */
- Html5.canPlayType = function (type) {
- return Html5.TEST_VID.canPlayType(type);
- };
-
- /**
- * Check if the tech can support the given source
- *
- * @param {Object} srcObj
- * The source object
- * @param {Object} options
- * The options passed to the tech
- * @return {string} 'probably', 'maybe', or '' (empty string)
- */
- Html5.canPlaySource = function (srcObj, options) {
- return Html5.canPlayType(srcObj.type);
- };
-
- /**
- * Check if the volume can be changed in this browser/device.
- * Volume cannot be changed in a lot of mobile devices.
- * Specifically, it can't be changed from 1 on iOS.
- *
- * @return {boolean}
- * - True if volume can be controlled
- * - False otherwise
- */
- Html5.canControlVolume = function () {
- // IE will error if Windows Media Player not installed #3315
- try {
- const volume = Html5.TEST_VID.volume;
- Html5.TEST_VID.volume = volume / 2 + 0.1;
- const canControl = volume !== Html5.TEST_VID.volume;
-
- // With the introduction of iOS 15, there are cases where the volume is read as
- // changed but reverts back to its original state at the start of the next tick.
- // To determine whether volume can be controlled on iOS,
- // a timeout is set and the volume is checked asynchronously.
- // Since `features` doesn't currently work asynchronously, the value is manually set.
- if (canControl && IS_IOS) {
- window.setTimeout(() => {
- if (Html5 && Html5.prototype) {
- Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;
- }
- });
-
- // default iOS to false, which will be updated in the timeout above.
- return false;
- }
- return canControl;
- } catch (e) {
- return false;
- }
- };
-
- /**
- * Check if the volume can be muted in this browser/device.
- * Some devices, e.g. iOS, don't allow changing volume
- * but permits muting/unmuting.
- *
- * @return {boolean}
- * - True if volume can be muted
- * - False otherwise
- */
- Html5.canMuteVolume = function () {
- try {
- const muted = Html5.TEST_VID.muted;
-
- // in some versions of iOS muted property doesn't always
- // work, so we want to set both property and attribute
- Html5.TEST_VID.muted = !muted;
- if (Html5.TEST_VID.muted) {
- setAttribute(Html5.TEST_VID, 'muted', 'muted');
- } else {
- removeAttribute(Html5.TEST_VID, 'muted', 'muted');
- }
- return muted !== Html5.TEST_VID.muted;
- } catch (e) {
- return false;
- }
- };
-
- /**
- * Check if the playback rate can be changed in this browser/device.
- *
- * @return {boolean}
- * - True if playback rate can be controlled
- * - False otherwise
- */
- Html5.canControlPlaybackRate = function () {
- // Playback rate API is implemented in Android Chrome, but doesn't do anything
- // https://github.com/videojs/video.js/issues/3180
- if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {
- return false;
- }
- // IE will error if Windows Media Player not installed #3315
- try {
- const playbackRate = Html5.TEST_VID.playbackRate;
- Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;
- return playbackRate !== Html5.TEST_VID.playbackRate;
- } catch (e) {
- return false;
- }
- };
-
- /**
- * Check if we can override a video/audio elements attributes, with
- * Object.defineProperty.
- *
- * @return {boolean}
- * - True if builtin attributes can be overridden
- * - False otherwise
- */
- Html5.canOverrideAttributes = function () {
- // if we cannot overwrite the src/innerHTML property, there is no support
- // iOS 7 safari for instance cannot do this.
- try {
- const noop = () => {};
- Object.defineProperty(document.createElement('video'), 'src', {
- get: noop,
- set: noop
- });
- Object.defineProperty(document.createElement('audio'), 'src', {
- get: noop,
- set: noop
- });
- Object.defineProperty(document.createElement('video'), 'innerHTML', {
- get: noop,
- set: noop
- });
- Object.defineProperty(document.createElement('audio'), 'innerHTML', {
- get: noop,
- set: noop
- });
- } catch (e) {
- return false;
- }
- return true;
- };
-
- /**
- * Check to see if native `TextTrack`s are supported by this browser/device.
- *
- * @return {boolean}
- * - True if native `TextTrack`s are supported.
- * - False otherwise
- */
- Html5.supportsNativeTextTracks = function () {
- return IS_ANY_SAFARI || IS_IOS && IS_CHROME;
- };
-
- /**
- * Check to see if native `VideoTrack`s are supported by this browser/device
- *
- * @return {boolean}
- * - True if native `VideoTrack`s are supported.
- * - False otherwise
- */
- Html5.supportsNativeVideoTracks = function () {
- return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);
- };
-
- /**
- * Check to see if native `AudioTrack`s are supported by this browser/device
- *
- * @return {boolean}
- * - True if native `AudioTrack`s are supported.
- * - False otherwise
- */
- Html5.supportsNativeAudioTracks = function () {
- return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);
- };
-
- /**
- * An array of events available on the Html5 tech.
- *
- * @private
- * @type {Array}
- */
- Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];
-
- /**
- * Boolean indicating whether the `Tech` supports volume control.
- *
- * @type {boolean}
- * @default {@link Html5.canControlVolume}
- */
- /**
- * Boolean indicating whether the `Tech` supports muting volume.
- *
- * @type {boolean}
- * @default {@link Html5.canMuteVolume}
- */
-
- /**
- * Boolean indicating whether the `Tech` supports changing the speed at which the media
- * plays. Examples:
- * - Set player to play 2x (twice) as fast
- * - Set player to play 0.5x (half) as fast
- *
- * @type {boolean}
- * @default {@link Html5.canControlPlaybackRate}
- */
-
- /**
- * Boolean indicating whether the `Tech` supports the `sourceset` event.
- *
- * @type {boolean}
- * @default
- */
- /**
- * Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.
- *
- * @type {boolean}
- * @default {@link Html5.supportsNativeTextTracks}
- */
- /**
- * Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.
- *
- * @type {boolean}
- * @default {@link Html5.supportsNativeVideoTracks}
- */
- /**
- * Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.
- *
- * @type {boolean}
- * @default {@link Html5.supportsNativeAudioTracks}
- */
- [['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function ([key, fn]) {
- defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);
- });
- Html5.prototype.featuresVolumeControl = Html5.canControlVolume();
-
- /**
- * Boolean indicating whether the `HTML5` tech currently supports the media element
- * moving in the DOM. iOS breaks if you move the media element, so this is set this to
- * false there. Everywhere else this should be true.
- *
- * @type {boolean}
- * @default
- */
- Html5.prototype.movingMediaElementInDOM = !IS_IOS;
-
- // TODO: Previous comment: No longer appears to be used. Can probably be removed.
- // Is this true?
- /**
- * Boolean indicating whether the `HTML5` tech currently supports automatic media resize
- * when going into fullscreen.
- *
- * @type {boolean}
- * @default
- */
- Html5.prototype.featuresFullscreenResize = true;
-
- /**
- * Boolean indicating whether the `HTML5` tech currently supports the progress event.
- * If this is false, manual `progress` events will be triggered instead.
- *
- * @type {boolean}
- * @default
- */
- Html5.prototype.featuresProgressEvents = true;
-
- /**
- * Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.
- * If this is false, manual `timeupdate` events will be triggered instead.
- *
- * @default
- */
- Html5.prototype.featuresTimeupdateEvents = true;
-
- /**
- * Whether the HTML5 el supports `requestVideoFrameCallback`
- *
- * @type {boolean}
- */
- Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);
- Html5.disposeMediaElement = function (el) {
- if (!el) {
- return;
- }
- if (el.parentNode) {
- el.parentNode.removeChild(el);
- }
-
- // remove any child track or source nodes to prevent their loading
- while (el.hasChildNodes()) {
- el.removeChild(el.firstChild);
- }
-
- // remove any src reference. not setting `src=''` because that causes a warning
- // in firefox
- el.removeAttribute('src');
-
- // force the media element to update its loading state by calling load()
- // however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)
- if (typeof el.load === 'function') {
- // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
- (function () {
- try {
- el.load();
- } catch (e) {
- // not supported
- }
- })();
- }
- };
- Html5.resetMediaElement = function (el) {
- if (!el) {
- return;
- }
- const sources = el.querySelectorAll('source');
- let i = sources.length;
- while (i--) {
- el.removeChild(sources[i]);
- }
-
- // remove any src reference.
- // not setting `src=''` because that throws an error
- el.removeAttribute('src');
- if (typeof el.load === 'function') {
- // wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
- (function () {
- try {
- el.load();
- } catch (e) {
- // satisfy linter
- }
- })();
- }
- };
-
- /* Native HTML5 element property wrapping ----------------------------------- */
- // Wrap native boolean attributes with getters that check both property and attribute
- // The list is as followed:
- // muted, defaultMuted, autoplay, controls, loop, playsinline
- [
- /**
- * Get the value of `muted` from the media element. `muted` indicates
- * that the volume for the media should be set to silent. This does not actually change
- * the `volume` attribute.
- *
- * @method Html5#muted
- * @return {boolean}
- * - True if the value of `volume` should be ignored and the audio set to silent.
- * - False if the value of `volume` should be used.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
- */
- 'muted',
- /**
- * Get the value of `defaultMuted` from the media element. `defaultMuted` indicates
- * whether the media should start muted or not. Only changes the default state of the
- * media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the
- * current state.
- *
- * @method Html5#defaultMuted
- * @return {boolean}
- * - The value of `defaultMuted` from the media element.
- * - True indicates that the media should start muted.
- * - False indicates that the media should not start muted
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
- */
- 'defaultMuted',
- /**
- * Get the value of `autoplay` from the media element. `autoplay` indicates
- * that the media should start to play as soon as the page is ready.
- *
- * @method Html5#autoplay
- * @return {boolean}
- * - The value of `autoplay` from the media element.
- * - True indicates that the media should start as soon as the page loads.
- * - False indicates that the media should not start as soon as the page loads.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
- */
- 'autoplay',
- /**
- * Get the value of `controls` from the media element. `controls` indicates
- * whether the native media controls should be shown or hidden.
- *
- * @method Html5#controls
- * @return {boolean}
- * - The value of `controls` from the media element.
- * - True indicates that native controls should be showing.
- * - False indicates that native controls should be hidden.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}
- */
- 'controls',
- /**
- * Get the value of `loop` from the media element. `loop` indicates
- * that the media should return to the start of the media and continue playing once
- * it reaches the end.
- *
- * @method Html5#loop
- * @return {boolean}
- * - The value of `loop` from the media element.
- * - True indicates that playback should seek back to start once
- * the end of a media is reached.
- * - False indicates that playback should not loop back to the start when the
- * end of the media is reached.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
- */
- 'loop',
- /**
- * Get the value of `playsinline` from the media element. `playsinline` indicates
- * to the browser that non-fullscreen playback is preferred when fullscreen
- * playback is the native default, such as in iOS Safari.
- *
- * @method Html5#playsinline
- * @return {boolean}
- * - The value of `playsinline` from the media element.
- * - True indicates that the media should play inline.
- * - False indicates that the media should not play inline.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
- */
- 'playsinline'].forEach(function (prop) {
- Html5.prototype[prop] = function () {
- return this.el_[prop] || this.el_.hasAttribute(prop);
- };
- });
-
- // Wrap native boolean attributes with setters that set both property and attribute
- // The list is as followed:
- // setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline
- // setControls is special-cased above
- [
- /**
- * Set the value of `muted` on the media element. `muted` indicates that the current
- * audio level should be silent.
- *
- * @method Html5#setMuted
- * @param {boolean} muted
- * - True if the audio should be set to silent
- * - False otherwise
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
- */
- 'muted',
- /**
- * Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current
- * audio level should be silent, but will only effect the muted level on initial playback..
- *
- * @method Html5.prototype.setDefaultMuted
- * @param {boolean} defaultMuted
- * - True if the audio should be set to silent
- * - False otherwise
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
- */
- 'defaultMuted',
- /**
- * Set the value of `autoplay` on the media element. `autoplay` indicates
- * that the media should start to play as soon as the page is ready.
- *
- * @method Html5#setAutoplay
- * @param {boolean} autoplay
- * - True indicates that the media should start as soon as the page loads.
- * - False indicates that the media should not start as soon as the page loads.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
- */
- 'autoplay',
- /**
- * Set the value of `loop` on the media element. `loop` indicates
- * that the media should return to the start of the media and continue playing once
- * it reaches the end.
- *
- * @method Html5#setLoop
- * @param {boolean} loop
- * - True indicates that playback should seek back to start once
- * the end of a media is reached.
- * - False indicates that playback should not loop back to the start when the
- * end of the media is reached.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
- */
- 'loop',
- /**
- * Set the value of `playsinline` from the media element. `playsinline` indicates
- * to the browser that non-fullscreen playback is preferred when fullscreen
- * playback is the native default, such as in iOS Safari.
- *
- * @method Html5#setPlaysinline
- * @param {boolean} playsinline
- * - True indicates that the media should play inline.
- * - False indicates that the media should not play inline.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
- */
- 'playsinline'].forEach(function (prop) {
- Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
- this.el_[prop] = v;
- if (v) {
- this.el_.setAttribute(prop, prop);
- } else {
- this.el_.removeAttribute(prop);
- }
- };
- });
-
- // Wrap native properties with a getter
- // The list is as followed
- // paused, currentTime, buffered, volume, poster, preload, error, seeking
- // seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture
- // played, networkState, readyState, videoWidth, videoHeight, crossOrigin
- [
- /**
- * Get the value of `paused` from the media element. `paused` indicates whether the media element
- * is currently paused or not.
- *
- * @method Html5#paused
- * @return {boolean}
- * The value of `paused` from the media element.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}
- */
- 'paused',
- /**
- * Get the value of `currentTime` from the media element. `currentTime` indicates
- * the current second that the media is at in playback.
- *
- * @method Html5#currentTime
- * @return {number}
- * The value of `currentTime` from the media element.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}
- */
- 'currentTime',
- /**
- * Get the value of `buffered` from the media element. `buffered` is a `TimeRange`
- * object that represents the parts of the media that are already downloaded and
- * available for playback.
- *
- * @method Html5#buffered
- * @return {TimeRange}
- * The value of `buffered` from the media element.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}
- */
- 'buffered',
- /**
- * Get the value of `volume` from the media element. `volume` indicates
- * the current playback volume of audio for a media. `volume` will be a value from 0
- * (silent) to 1 (loudest and default).
- *
- * @method Html5#volume
- * @return {number}
- * The value of `volume` from the media element. Value will be between 0-1.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
- */
- 'volume',
- /**
- * Get the value of `poster` from the media element. `poster` indicates
- * that the url of an image file that can/will be shown when no media data is available.
- *
- * @method Html5#poster
- * @return {string}
- * The value of `poster` from the media element. Value will be a url to an
- * image.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}
- */
- 'poster',
- /**
- * Get the value of `preload` from the media element. `preload` indicates
- * what should download before the media is interacted with. It can have the following
- * values:
- * - none: nothing should be downloaded
- * - metadata: poster and the first few frames of the media may be downloaded to get
- * media dimensions and other metadata
- * - auto: allow the media and metadata for the media to be downloaded before
- * interaction
- *
- * @method Html5#preload
- * @return {string}
- * The value of `preload` from the media element. Will be 'none', 'metadata',
- * or 'auto'.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
- */
- 'preload',
- /**
- * Get the value of the `error` from the media element. `error` indicates any
- * MediaError that may have occurred during playback. If error returns null there is no
- * current error.
- *
- * @method Html5#error
- * @return {MediaError|null}
- * The value of `error` from the media element. Will be `MediaError` if there
- * is a current error and null otherwise.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}
- */
- 'error',
- /**
- * Get the value of `seeking` from the media element. `seeking` indicates whether the
- * media is currently seeking to a new position or not.
- *
- * @method Html5#seeking
- * @return {boolean}
- * - The value of `seeking` from the media element.
- * - True indicates that the media is currently seeking to a new position.
- * - False indicates that the media is not seeking to a new position at this time.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}
- */
- 'seeking',
- /**
- * Get the value of `seekable` from the media element. `seekable` returns a
- * `TimeRange` object indicating ranges of time that can currently be `seeked` to.
- *
- * @method Html5#seekable
- * @return {TimeRange}
- * The value of `seekable` from the media element. A `TimeRange` object
- * indicating the current ranges of time that can be seeked to.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}
- */
- 'seekable',
- /**
- * Get the value of `ended` from the media element. `ended` indicates whether
- * the media has reached the end or not.
- *
- * @method Html5#ended
- * @return {boolean}
- * - The value of `ended` from the media element.
- * - True indicates that the media has ended.
- * - False indicates that the media has not ended.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}
- */
- 'ended',
- /**
- * Get the value of `playbackRate` from the media element. `playbackRate` indicates
- * the rate at which the media is currently playing back. Examples:
- * - if playbackRate is set to 2, media will play twice as fast.
- * - if playbackRate is set to 0.5, media will play half as fast.
- *
- * @method Html5#playbackRate
- * @return {number}
- * The value of `playbackRate` from the media element. A number indicating
- * the current playback speed of the media, where 1 is normal speed.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
- */
- 'playbackRate',
- /**
- * Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates
- * the rate at which the media is currently playing back. This value will not indicate the current
- * `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.
- *
- * Examples:
- * - if defaultPlaybackRate is set to 2, media will play twice as fast.
- * - if defaultPlaybackRate is set to 0.5, media will play half as fast.
- *
- * @method Html5.prototype.defaultPlaybackRate
- * @return {number}
- * The value of `defaultPlaybackRate` from the media element. A number indicating
- * the current playback speed of the media, where 1 is normal speed.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
- */
- 'defaultPlaybackRate',
- /**
- * Get the value of 'disablePictureInPicture' from the video element.
- *
- * @method Html5#disablePictureInPicture
- * @return {boolean} value
- * - The value of `disablePictureInPicture` from the video element.
- * - True indicates that the video can't be played in Picture-In-Picture mode
- * - False indicates that the video can be played in Picture-In-Picture mode
- *
- * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
- */
- 'disablePictureInPicture',
- /**
- * Get the value of `played` from the media element. `played` returns a `TimeRange`
- * object representing points in the media timeline that have been played.
- *
- * @method Html5#played
- * @return {TimeRange}
- * The value of `played` from the media element. A `TimeRange` object indicating
- * the ranges of time that have been played.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}
- */
- 'played',
- /**
- * Get the value of `networkState` from the media element. `networkState` indicates
- * the current network state. It returns an enumeration from the following list:
- * - 0: NETWORK_EMPTY
- * - 1: NETWORK_IDLE
- * - 2: NETWORK_LOADING
- * - 3: NETWORK_NO_SOURCE
- *
- * @method Html5#networkState
- * @return {number}
- * The value of `networkState` from the media element. This will be a number
- * from the list in the description.
- *
- * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}
- */
- 'networkState',
- /**
- * Get the value of `readyState` from the media element. `readyState` indicates
- * the current state of the media element. It returns an enumeration from the
- * following list:
- * - 0: HAVE_NOTHING
- * - 1: HAVE_METADATA
- * - 2: HAVE_CURRENT_DATA
- * - 3: HAVE_FUTURE_DATA
- * - 4: HAVE_ENOUGH_DATA
- *
- * @method Html5#readyState
- * @return {number}
- * The value of `readyState` from the media element. This will be a number
- * from the list in the description.
- *
- * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}
- */
- 'readyState',
- /**
- * Get the value of `videoWidth` from the video element. `videoWidth` indicates
- * the current width of the video in css pixels.
- *
- * @method Html5#videoWidth
- * @return {number}
- * The value of `videoWidth` from the video element. This will be a number
- * in css pixels.
- *
- * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
- */
- 'videoWidth',
- /**
- * Get the value of `videoHeight` from the video element. `videoHeight` indicates
- * the current height of the video in css pixels.
- *
- * @method Html5#videoHeight
- * @return {number}
- * The value of `videoHeight` from the video element. This will be a number
- * in css pixels.
- *
- * @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
- */
- 'videoHeight',
- /**
- * Get the value of `crossOrigin` from the media element. `crossOrigin` indicates
- * to the browser that should sent the cookies along with the requests for the
- * different assets/playlists
- *
- * @method Html5#crossOrigin
- * @return {string}
- * - anonymous indicates that the media should not sent cookies.
- * - use-credentials indicates that the media should sent cookies along the requests.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
- */
- 'crossOrigin'].forEach(function (prop) {
- Html5.prototype[prop] = function () {
- return this.el_[prop];
- };
- });
-
- // Wrap native properties with a setter in this format:
- // set + toTitleCase(name)
- // The list is as follows:
- // setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,
- // setDisablePictureInPicture, setCrossOrigin
- [
- /**
- * Set the value of `volume` on the media element. `volume` indicates the current
- * audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and
- * so on.
- *
- * @method Html5#setVolume
- * @param {number} percentAsDecimal
- * The volume percent as a decimal. Valid range is from 0-1.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
- */
- 'volume',
- /**
- * Set the value of `src` on the media element. `src` indicates the current
- * {@link Tech~SourceObject} for the media.
- *
- * @method Html5#setSrc
- * @param {Tech~SourceObject} src
- * The source object to set as the current source.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}
- */
- 'src',
- /**
- * Set the value of `poster` on the media element. `poster` is the url to
- * an image file that can/will be shown when no media data is available.
- *
- * @method Html5#setPoster
- * @param {string} poster
- * The url to an image that should be used as the `poster` for the media
- * element.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}
- */
- 'poster',
- /**
- * Set the value of `preload` on the media element. `preload` indicates
- * what should download before the media is interacted with. It can have the following
- * values:
- * - none: nothing should be downloaded
- * - metadata: poster and the first few frames of the media may be downloaded to get
- * media dimensions and other metadata
- * - auto: allow the media and metadata for the media to be downloaded before
- * interaction
- *
- * @method Html5#setPreload
- * @param {string} preload
- * The value of `preload` to set on the media element. Must be 'none', 'metadata',
- * or 'auto'.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
- */
- 'preload',
- /**
- * Set the value of `playbackRate` on the media element. `playbackRate` indicates
- * the rate at which the media should play back. Examples:
- * - if playbackRate is set to 2, media will play twice as fast.
- * - if playbackRate is set to 0.5, media will play half as fast.
- *
- * @method Html5#setPlaybackRate
- * @return {number}
- * The value of `playbackRate` from the media element. A number indicating
- * the current playback speed of the media, where 1 is normal speed.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
- */
- 'playbackRate',
- /**
- * Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates
- * the rate at which the media should play back upon initial startup. Changing this value
- * after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.
- *
- * Example Values:
- * - if playbackRate is set to 2, media will play twice as fast.
- * - if playbackRate is set to 0.5, media will play half as fast.
- *
- * @method Html5.prototype.setDefaultPlaybackRate
- * @return {number}
- * The value of `defaultPlaybackRate` from the media element. A number indicating
- * the current playback speed of the media, where 1 is normal speed.
- *
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}
- */
- 'defaultPlaybackRate',
- /**
- * Prevents the browser from suggesting a Picture-in-Picture context menu
- * or to request Picture-in-Picture automatically in some cases.
- *
- * @method Html5#setDisablePictureInPicture
- * @param {boolean} value
- * The true value will disable Picture-in-Picture mode.
- *
- * @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
- */
- 'disablePictureInPicture',
- /**
- * Set the value of `crossOrigin` from the media element. `crossOrigin` indicates
- * to the browser that should sent the cookies along with the requests for the
- * different assets/playlists
- *
- * @method Html5#setCrossOrigin
- * @param {string} crossOrigin
- * - anonymous indicates that the media should not sent cookies.
- * - use-credentials indicates that the media should sent cookies along the requests.
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
- */
- 'crossOrigin'].forEach(function (prop) {
- Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
- this.el_[prop] = v;
- };
- });
-
- // wrap native functions with a function
- // The list is as follows:
- // pause, load, play
- [
- /**
- * A wrapper around the media elements `pause` function. This will call the `HTML5`
- * media elements `pause` function.
- *
- * @method Html5#pause
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}
- */
- 'pause',
- /**
- * A wrapper around the media elements `load` function. This will call the `HTML5`s
- * media element `load` function.
- *
- * @method Html5#load
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}
- */
- 'load',
- /**
- * A wrapper around the media elements `play` function. This will call the `HTML5`s
- * media element `play` function.
- *
- * @method Html5#play
- * @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}
- */
- 'play'].forEach(function (prop) {
- Html5.prototype[prop] = function () {
- return this.el_[prop]();
- };
- });
- Tech.withSourceHandlers(Html5);
-
- /**
- * Native source handler for Html5, simply passes the source to the media element.
- *
- * @property {Tech~SourceObject} source
- * The source object
- *
- * @property {Html5} tech
- * The instance of the HTML5 tech.
- */
- Html5.nativeSourceHandler = {};
-
- /**
- * Check if the media element can play the given mime type.
- *
- * @param {string} type
- * The mimetype to check
- *
- * @return {string}
- * 'probably', 'maybe', or '' (empty string)
- */
- Html5.nativeSourceHandler.canPlayType = function (type) {
- // IE without MediaPlayer throws an error (#519)
- try {
- return Html5.TEST_VID.canPlayType(type);
- } catch (e) {
- return '';
- }
- };
-
- /**
- * Check if the media element can handle a source natively.
- *
- * @param {Tech~SourceObject} source
- * The source object
- *
- * @param {Object} [options]
- * Options to be passed to the tech.
- *
- * @return {string}
- * 'probably', 'maybe', or '' (empty string).
- */
- Html5.nativeSourceHandler.canHandleSource = function (source, options) {
- // If a type was provided we should rely on that
- if (source.type) {
- return Html5.nativeSourceHandler.canPlayType(source.type);
-
- // If no type, fall back to checking 'video/[EXTENSION]'
- } else if (source.src) {
- const ext = getFileExtension(source.src);
- return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);
- }
- return '';
- };
-
- /**
- * Pass the source to the native media element.
- *
- * @param {Tech~SourceObject} source
- * The source object
- *
- * @param {Html5} tech
- * The instance of the Html5 tech
- *
- * @param {Object} [options]
- * The options to pass to the source
- */
- Html5.nativeSourceHandler.handleSource = function (source, tech, options) {
- tech.setSrc(source.src);
- };
-
- /**
- * A noop for the native dispose function, as cleanup is not needed.
- */
- Html5.nativeSourceHandler.dispose = function () {};
-
- // Register the native source handler
- Html5.registerSourceHandler(Html5.nativeSourceHandler);
- Tech.registerTech('Html5', Html5);
-
- /**
- * @file player.js
- */
-
- // The following tech events are simply re-triggered
- // on the player when they happen
- const TECH_EVENTS_RETRIGGER = [
- /**
- * Fired while the user agent is downloading media data.
- *
- * @event Player#progress
- * @type {Event}
- */
- /**
- * Retrigger the `progress` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechProgress_
- * @fires Player#progress
- * @listens Tech#progress
- */
- 'progress',
- /**
- * Fires when the loading of an audio/video is aborted.
- *
- * @event Player#abort
- * @type {Event}
- */
- /**
- * Retrigger the `abort` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechAbort_
- * @fires Player#abort
- * @listens Tech#abort
- */
- 'abort',
- /**
- * Fires when the browser is intentionally not getting media data.
- *
- * @event Player#suspend
- * @type {Event}
- */
- /**
- * Retrigger the `suspend` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechSuspend_
- * @fires Player#suspend
- * @listens Tech#suspend
- */
- 'suspend',
- /**
- * Fires when the current playlist is empty.
- *
- * @event Player#emptied
- * @type {Event}
- */
- /**
- * Retrigger the `emptied` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechEmptied_
- * @fires Player#emptied
- * @listens Tech#emptied
- */
- 'emptied',
- /**
- * Fires when the browser is trying to get media data, but data is not available.
- *
- * @event Player#stalled
- * @type {Event}
- */
- /**
- * Retrigger the `stalled` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechStalled_
- * @fires Player#stalled
- * @listens Tech#stalled
- */
- 'stalled',
- /**
- * Fires when the browser has loaded meta data for the audio/video.
- *
- * @event Player#loadedmetadata
- * @type {Event}
- */
- /**
- * Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechLoadedmetadata_
- * @fires Player#loadedmetadata
- * @listens Tech#loadedmetadata
- */
- 'loadedmetadata',
- /**
- * Fires when the browser has loaded the current frame of the audio/video.
- *
- * @event Player#loadeddata
- * @type {event}
- */
- /**
- * Retrigger the `loadeddata` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechLoaddeddata_
- * @fires Player#loadeddata
- * @listens Tech#loadeddata
- */
- 'loadeddata',
- /**
- * Fires when the current playback position has changed.
- *
- * @event Player#timeupdate
- * @type {event}
- */
- /**
- * Retrigger the `timeupdate` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechTimeUpdate_
- * @fires Player#timeupdate
- * @listens Tech#timeupdate
- */
- 'timeupdate',
- /**
- * Fires when the video's intrinsic dimensions change
- *
- * @event Player#resize
- * @type {event}
- */
- /**
- * Retrigger the `resize` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechResize_
- * @fires Player#resize
- * @listens Tech#resize
- */
- 'resize',
- /**
- * Fires when the volume has been changed
- *
- * @event Player#volumechange
- * @type {event}
- */
- /**
- * Retrigger the `volumechange` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechVolumechange_
- * @fires Player#volumechange
- * @listens Tech#volumechange
- */
- 'volumechange',
- /**
- * Fires when the text track has been changed
- *
- * @event Player#texttrackchange
- * @type {event}
- */
- /**
- * Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.
- *
- * @private
- * @method Player#handleTechTexttrackchange_
- * @fires Player#texttrackchange
- * @listens Tech#texttrackchange
- */
- 'texttrackchange'];
-
- // events to queue when playback rate is zero
- // this is a hash for the sole purpose of mapping non-camel-cased event names
- // to camel-cased function names
- const TECH_EVENTS_QUEUE = {
- canplay: 'CanPlay',
- canplaythrough: 'CanPlayThrough',
- playing: 'Playing',
- seeked: 'Seeked'
- };
- const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];
- const BREAKPOINT_CLASSES = {};
-
- // grep: vjs-layout-tiny
- // grep: vjs-layout-x-small
- // grep: vjs-layout-small
- // grep: vjs-layout-medium
- // grep: vjs-layout-large
- // grep: vjs-layout-x-large
- // grep: vjs-layout-huge
- BREAKPOINT_ORDER.forEach(k => {
- const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k;
- BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`;
- });
- const DEFAULT_BREAKPOINTS = {
- tiny: 210,
- xsmall: 320,
- small: 425,
- medium: 768,
- large: 1440,
- xlarge: 2560,
- huge: Infinity
- };
-
- /**
- * An instance of the `Player` class is created when any of the Video.js setup methods
- * are used to initialize a video.
- *
- * After an instance has been created it can be accessed globally in three ways:
- * 1. By calling `videojs.getPlayer('example_video_1');`
- * 2. By calling `videojs('example_video_1');` (not recommended)
- * 2. By using it directly via `videojs.players.example_video_1;`
- *
- * @extends Component
- * @global
- */
- class Player extends Component$1 {
- /**
- * Create an instance of this class.
- *
- * @param {Element} tag
- * The original video DOM element used for configuring options.
- *
- * @param {Object} [options]
- * Object of option names and values.
- *
- * @param {Function} [ready]
- * Ready callback function.
- */
- constructor(tag, options, ready) {
- // Make sure tag ID exists
- // also here.. probably better
- tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;
-
- // Set Options
- // The options argument overrides options set in the video tag
- // which overrides globally set options.
- // This latter part coincides with the load order
- // (tag must exist before Player)
- options = Object.assign(Player.getTagSettings(tag), options);
-
- // Delay the initialization of children because we need to set up
- // player properties first, and can't use `this` before `super()`
- options.initChildren = false;
-
- // Same with creating the element
- options.createEl = false;
-
- // don't auto mixin the evented mixin
- options.evented = false;
-
- // we don't want the player to report touch activity on itself
- // see enableTouchActivity in Component
- options.reportTouchActivity = false;
-
- // If language is not set, get the closest lang attribute
- if (!options.language) {
- const closest = tag.closest('[lang]');
- if (closest) {
- options.language = closest.getAttribute('lang');
- }
- }
-
- // Run base component initializing with new options
- super(null, options, ready);
-
- // Create bound methods for document listeners.
- this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e);
- this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e);
- this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e);
- this.boundApplyInitTime_ = e => this.applyInitTime_(e);
- this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e);
- this.boundHandleTechClick_ = e => this.handleTechClick_(e);
- this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e);
- this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e);
- this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e);
- this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e);
- this.boundHandleTechTap_ = e => this.handleTechTap_(e);
-
- // default isFullscreen_ to false
- this.isFullscreen_ = false;
-
- // create logger
- this.log = createLogger(this.id_);
-
- // Hold our own reference to fullscreen api so it can be mocked in tests
- this.fsApi_ = FullscreenApi;
-
- // Tracks when a tech changes the poster
- this.isPosterFromTech_ = false;
-
- // Holds callback info that gets queued when playback rate is zero
- // and a seek is happening
- this.queuedCallbacks_ = [];
-
- // Turn off API access because we're loading a new tech that might load asynchronously
- this.isReady_ = false;
-
- // Init state hasStarted_
- this.hasStarted_ = false;
-
- // Init state userActive_
- this.userActive_ = false;
-
- // Init debugEnabled_
- this.debugEnabled_ = false;
-
- // Init state audioOnlyMode_
- this.audioOnlyMode_ = false;
-
- // Init state audioPosterMode_
- this.audioPosterMode_ = false;
-
- // Init state audioOnlyCache_
- this.audioOnlyCache_ = {
- playerHeight: null,
- hiddenChildren: []
- };
-
- // if the global option object was accidentally blown away by
- // someone, bail early with an informative error
- if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) {
- throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');
- }
-
- // Store the original tag used to set options
- this.tag = tag;
-
- // Store the tag attributes used to restore html5 element
- this.tagAttributes = tag && getAttributes(tag);
-
- // Update current language
- this.language(this.options_.language);
-
- // Update Supported Languages
- if (options.languages) {
- // Normalise player option languages to lowercase
- const languagesToLower = {};
- Object.getOwnPropertyNames(options.languages).forEach(function (name) {
- languagesToLower[name.toLowerCase()] = options.languages[name];
- });
- this.languages_ = languagesToLower;
- } else {
- this.languages_ = Player.prototype.options_.languages;
- }
- this.resetCache_();
-
- // Set poster
- /** @type string */
- this.poster_ = options.poster || '';
-
- // Set controls
- /** @type {boolean} */
- this.controls_ = !!options.controls;
-
- // Original tag settings stored in options
- // now remove immediately so native controls don't flash.
- // May be turned back on by HTML5 tech if nativeControlsForTouch is true
- tag.controls = false;
- tag.removeAttribute('controls');
- this.changingSrc_ = false;
- this.playCallbacks_ = [];
- this.playTerminatedQueue_ = [];
-
- // the attribute overrides the option
- if (tag.hasAttribute('autoplay')) {
- this.autoplay(true);
- } else {
- // otherwise use the setter to validate and
- // set the correct value.
- this.autoplay(this.options_.autoplay);
- }
-
- // check plugins
- if (options.plugins) {
- Object.keys(options.plugins).forEach(name => {
- if (typeof this[name] !== 'function') {
- throw new Error(`plugin "${name}" does not exist`);
- }
- });
- }
-
- /*
- * Store the internal state of scrubbing
- *
- * @private
- * @return {Boolean} True if the user is scrubbing
- */
- this.scrubbing_ = false;
- this.el_ = this.createEl();
-
- // Make this an evented object and use `el_` as its event bus.
- evented(this, {
- eventBusKey: 'el_'
- });
-
- // listen to document and player fullscreenchange handlers so we receive those events
- // before a user can receive them so we can update isFullscreen appropriately.
- // make sure that we listen to fullscreenchange events before everything else to make sure that
- // our isFullscreen method is updated properly for internal components as well as external.
- if (this.fsApi_.requestFullscreen) {
- on(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
- this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
- }
- if (this.fluid_) {
- this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
- }
- // We also want to pass the original player options to each component and plugin
- // as well so they don't need to reach back into the player for options later.
- // We also need to do another copy of this.options_ so we don't end up with
- // an infinite loop.
- const playerOptionsCopy = merge$2(this.options_);
-
- // Load plugins
- if (options.plugins) {
- Object.keys(options.plugins).forEach(name => {
- this[name](options.plugins[name]);
- });
- }
-
- // Enable debug mode to fire debugon event for all plugins.
- if (options.debug) {
- this.debug(true);
- }
- this.options_.playerOptions = playerOptionsCopy;
- this.middleware_ = [];
- this.playbackRates(options.playbackRates);
- if (options.experimentalSvgIcons) {
- // Add SVG Sprite to the DOM
- const parser = new window.DOMParser();
- const parsedSVG = parser.parseFromString(icons, 'image/svg+xml');
- const errorNode = parsedSVG.querySelector('parsererror');
- if (errorNode) {
- log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.');
- this.options_.experimentalSvgIcons = null;
- } else {
- const sprite = parsedSVG.documentElement;
- sprite.style.display = 'none';
- this.el_.appendChild(sprite);
- this.addClass('vjs-svg-icons-enabled');
- }
- }
- this.initChildren();
-
- // Set isAudio based on whether or not an audio tag was used
- this.isAudio(tag.nodeName.toLowerCase() === 'audio');
-
- // Update controls className. Can't do this when the controls are initially
- // set because the element doesn't exist yet.
- if (this.controls()) {
- this.addClass('vjs-controls-enabled');
- } else {
- this.addClass('vjs-controls-disabled');
- }
-
- // Set ARIA label and region role depending on player type
- this.el_.setAttribute('role', 'region');
- if (this.isAudio()) {
- this.el_.setAttribute('aria-label', this.localize('Audio Player'));
- } else {
- this.el_.setAttribute('aria-label', this.localize('Video Player'));
- }
- if (this.isAudio()) {
- this.addClass('vjs-audio');
- }
-
- // TODO: Make this smarter. Toggle user state between touching/mousing
- // using events, since devices can have both touch and mouse events.
- // TODO: Make this check be performed again when the window switches between monitors
- // (See https://github.com/videojs/video.js/issues/5683)
- if (TOUCH_ENABLED) {
- this.addClass('vjs-touch-enabled');
- }
-
- // iOS Safari has broken hover handling
- if (!IS_IOS) {
- this.addClass('vjs-workinghover');
- }
-
- // Make player easily findable by ID
- Player.players[this.id_] = this;
-
- // Add a major version class to aid css in plugins
- const majorVersion = version$5.split('.')[0];
- this.addClass(`vjs-v${majorVersion}`);
-
- // When the player is first initialized, trigger activity so components
- // like the control bar show themselves if needed
- this.userActive(true);
- this.reportUserActivity();
- this.one('play', e => this.listenForUserActivity_(e));
- this.on('keydown', e => this.handleKeyDown(e));
- this.on('languagechange', e => this.handleLanguagechange(e));
- this.breakpoints(this.options_.breakpoints);
- this.responsive(this.options_.responsive);
-
- // Calling both the audio mode methods after the player is fully
- // setup to be able to listen to the events triggered by them
- this.on('ready', () => {
- // Calling the audioPosterMode method first so that
- // the audioOnlyMode can take precedence when both options are set to true
- this.audioPosterMode(this.options_.audioPosterMode);
- this.audioOnlyMode(this.options_.audioOnlyMode);
- });
- }
-
- /**
- * Destroys the video player and does any necessary cleanup.
- *
- * This is especially helpful if you are dynamically adding and removing videos
- * to/from the DOM.
- *
- * @fires Player#dispose
- */
- dispose() {
- /**
- * Called when the player is being disposed of.
- *
- * @event Player#dispose
- * @type {Event}
- */
- this.trigger('dispose');
- // prevent dispose from being called twice
- this.off('dispose');
-
- // Make sure all player-specific document listeners are unbound. This is
- off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
- off(document, 'keydown', this.boundFullWindowOnEscKey_);
- if (this.styleEl_ && this.styleEl_.parentNode) {
- this.styleEl_.parentNode.removeChild(this.styleEl_);
- this.styleEl_ = null;
- }
-
- // Kill reference to this player
- Player.players[this.id_] = null;
- if (this.tag && this.tag.player) {
- this.tag.player = null;
- }
- if (this.el_ && this.el_.player) {
- this.el_.player = null;
- }
- if (this.tech_) {
- this.tech_.dispose();
- this.isPosterFromTech_ = false;
- this.poster_ = '';
- }
- if (this.playerElIngest_) {
- this.playerElIngest_ = null;
- }
- if (this.tag) {
- this.tag = null;
- }
- clearCacheForPlayer(this);
-
- // remove all event handlers for track lists
- // all tracks and track listeners are removed on
- // tech dispose
- ALL.names.forEach(name => {
- const props = ALL[name];
- const list = this[props.getterName]();
-
- // if it is not a native list
- // we have to manually remove event listeners
- if (list && list.off) {
- list.off();
- }
- });
-
- // the actual .el_ is removed here, or replaced if
- super.dispose({
- restoreEl: this.options_.restoreEl
- });
- }
-
- /**
- * Create the `Player`'s DOM element.
- *
- * @return {Element}
- * The DOM element that gets created.
- */
- createEl() {
- let tag = this.tag;
- let el;
- let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');
- const divEmbed = this.tag.tagName.toLowerCase() === 'video-js';
- if (playerElIngest) {
- el = this.el_ = tag.parentNode;
- } else if (!divEmbed) {
- el = this.el_ = super.createEl('div');
- }
-
- // Copy over all the attributes from the tag, including ID and class
- // ID will now reference player box, not the video tag
- const attrs = getAttributes(tag);
- if (divEmbed) {
- el = this.el_ = tag;
- tag = this.tag = document.createElement('video');
- while (el.children.length) {
- tag.appendChild(el.firstChild);
- }
- if (!hasClass(el, 'video-js')) {
- addClass(el, 'video-js');
- }
- el.appendChild(tag);
- playerElIngest = this.playerElIngest_ = el;
- // move properties over from our custom `video-js` element
- // to our new `video` element. This will move things like
- // `src` or `controls` that were set via js before the player
- // was initialized.
- Object.keys(el).forEach(k => {
- try {
- tag[k] = el[k];
- } catch (e) {
- // we got a a property like outerHTML which we can't actually copy, ignore it
- }
- });
- }
-
- // set tabindex to -1 to remove the video element from the focus order
- tag.setAttribute('tabindex', '-1');
- attrs.tabindex = '-1';
-
- // Workaround for #4583 on Chrome (on Windows) with JAWS.
- // See https://github.com/FreedomScientific/VFO-standards-support/issues/78
- // Note that we can't detect if JAWS is being used, but this ARIA attribute
- // doesn't change behavior of Chrome if JAWS is not being used
- if (IS_CHROME && IS_WINDOWS) {
- tag.setAttribute('role', 'application');
- attrs.role = 'application';
- }
-
- // Remove width/height attrs from tag so CSS can make it 100% width/height
- tag.removeAttribute('width');
- tag.removeAttribute('height');
- if ('width' in attrs) {
- delete attrs.width;
- }
- if ('height' in attrs) {
- delete attrs.height;
- }
- Object.getOwnPropertyNames(attrs).forEach(function (attr) {
- // don't copy over the class attribute to the player element when we're in a div embed
- // the class is already set up properly in the divEmbed case
- // and we want to make sure that the `video-js` class doesn't get lost
- if (!(divEmbed && attr === 'class')) {
- el.setAttribute(attr, attrs[attr]);
- }
- if (divEmbed) {
- tag.setAttribute(attr, attrs[attr]);
- }
- });
-
- // Update tag id/class for use as HTML5 playback tech
- // Might think we should do this after embedding in container so .vjs-tech class
- // doesn't flash 100% width/height, but class only applies with .video-js parent
- tag.playerId = tag.id;
- tag.id += '_html5_api';
- tag.className = 'vjs-tech';
-
- // Make player findable on elements
- tag.player = el.player = this;
- // Default state of video is paused
- this.addClass('vjs-paused');
- const deviceClassNames = ['IS_SMART_TV', 'IS_TIZEN', 'IS_WEBOS', 'IS_ANDROID', 'IS_IPAD', 'IS_IPHONE'].filter(key => browser[key]).map(key => {
- return 'vjs-device-' + key.substring(3).toLowerCase().replace(/\_/g, '-');
- });
- this.addClass(...deviceClassNames);
-
- // Add a style element in the player that we'll use to set the width/height
- // of the player in a way that's still overridable by CSS, just like the
- // video element
- if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true) {
- this.styleEl_ = createStyleElement('vjs-styles-dimensions');
- const defaultsStyleEl = $('.vjs-styles-defaults');
- const head = $('head');
- head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);
- }
- this.fill_ = false;
- this.fluid_ = false;
-
- // Pass in the width/height/aspectRatio options which will update the style el
- this.width(this.options_.width);
- this.height(this.options_.height);
- this.fill(this.options_.fill);
- this.fluid(this.options_.fluid);
- this.aspectRatio(this.options_.aspectRatio);
- // support both crossOrigin and crossorigin to reduce confusion and issues around the name
- this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin);
-
- // Hide any links within the video/audio tag,
- // because IE doesn't hide them completely from screen readers.
- const links = tag.getElementsByTagName('a');
- for (let i = 0; i < links.length; i++) {
- const linkEl = links.item(i);
- addClass(linkEl, 'vjs-hidden');
- linkEl.setAttribute('hidden', 'hidden');
- }
-
- // insertElFirst seems to cause the networkState to flicker from 3 to 2, so
- // keep track of the original for later so we can know if the source originally failed
- tag.initNetworkState_ = tag.networkState;
-
- // Wrap video tag in div (el/box) container
- if (tag.parentNode && !playerElIngest) {
- tag.parentNode.insertBefore(el, tag);
- }
-
- // insert the tag as the first child of the player element
- // then manually add it to the children array so that this.addChild
- // will work properly for other components
- //
- // Breaks iPhone, fixed in HTML5 setup.
- prependTo(tag, el);
- this.children_.unshift(tag);
-
- // Set lang attr on player to ensure CSS :lang() in consistent with player
- // if it's been set to something different to the doc
- this.el_.setAttribute('lang', this.language_);
- this.el_.setAttribute('translate', 'no');
- this.el_ = el;
- return el;
- }
-
- /**
- * Get or set the `Player`'s crossOrigin option. For the HTML5 player, this
- * sets the `crossOrigin` property on the `<video>` tag to control the CORS
- * behavior.
- *
- * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
- *
- * @param {string|null} [value]
- * The value to set the `Player`'s crossOrigin to. If an argument is
- * given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
- *
- * @return {string|null|undefined}
- * - The current crossOrigin value of the `Player` when getting.
- * - undefined when setting
- */
- crossOrigin(value) {
- // `null` can be set to unset a value
- if (typeof value === 'undefined') {
- return this.techGet_('crossOrigin');
- }
- if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
- log$1.warn(`crossOrigin must be null, "anonymous" or "use-credentials", given "${value}"`);
- return;
- }
- this.techCall_('setCrossOrigin', value);
- if (this.posterImage) {
- this.posterImage.crossOrigin(value);
- }
- return;
- }
-
- /**
- * A getter/setter for the `Player`'s width. Returns the player's configured value.
- * To get the current width use `currentWidth()`.
- *
- * @param {number|string} [value]
- * CSS value to set the `Player`'s width to.
- *
- * @return {number|undefined}
- * - The current width of the `Player` when getting.
- * - Nothing when setting
- */
- width(value) {
- return this.dimension('width', value);
- }
-
- /**
- * A getter/setter for the `Player`'s height. Returns the player's configured value.
- * To get the current height use `currentheight()`.
- *
- * @param {number|string} [value]
- * CSS value to set the `Player`'s height to.
- *
- * @return {number|undefined}
- * - The current height of the `Player` when getting.
- * - Nothing when setting
- */
- height(value) {
- return this.dimension('height', value);
- }
-
- /**
- * A getter/setter for the `Player`'s width & height.
- *
- * @param {string} dimension
- * This string can be:
- * - 'width'
- * - 'height'
- *
- * @param {number|string} [value]
- * Value for dimension specified in the first argument.
- *
- * @return {number}
- * The dimension arguments value when getting (width/height).
- */
- dimension(dimension, value) {
- const privDimension = dimension + '_';
- if (value === undefined) {
- return this[privDimension] || 0;
- }
- if (value === '' || value === 'auto') {
- // If an empty string is given, reset the dimension to be automatic
- this[privDimension] = undefined;
- this.updateStyleEl_();
- return;
- }
- const parsedVal = parseFloat(value);
- if (isNaN(parsedVal)) {
- log$1.error(`Improper value "${value}" supplied for for ${dimension}`);
- return;
- }
- this[privDimension] = parsedVal;
- this.updateStyleEl_();
- }
-
- /**
- * A getter/setter/toggler for the vjs-fluid `className` on the `Player`.
- *
- * Turning this on will turn off fill mode.
- *
- * @param {boolean} [bool]
- * - A value of true adds the class.
- * - A value of false removes the class.
- * - No value will be a getter.
- *
- * @return {boolean|undefined}
- * - The value of fluid when getting.
- * - `undefined` when setting.
- */
- fluid(bool) {
- if (bool === undefined) {
- return !!this.fluid_;
- }
- this.fluid_ = !!bool;
- if (isEvented(this)) {
- this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);
- }
- if (bool) {
- this.addClass('vjs-fluid');
- this.fill(false);
- addEventedCallback(this, () => {
- this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
- });
- } else {
- this.removeClass('vjs-fluid');
- }
- this.updateStyleEl_();
- }
-
- /**
- * A getter/setter/toggler for the vjs-fill `className` on the `Player`.
- *
- * Turning this on will turn off fluid mode.
- *
- * @param {boolean} [bool]
- * - A value of true adds the class.
- * - A value of false removes the class.
- * - No value will be a getter.
- *
- * @return {boolean|undefined}
- * - The value of fluid when getting.
- * - `undefined` when setting.
- */
- fill(bool) {
- if (bool === undefined) {
- return !!this.fill_;
- }
- this.fill_ = !!bool;
- if (bool) {
- this.addClass('vjs-fill');
- this.fluid(false);
- } else {
- this.removeClass('vjs-fill');
- }
- }
-
- /**
- * Get/Set the aspect ratio
- *
- * @param {string} [ratio]
- * Aspect ratio for player
- *
- * @return {string|undefined}
- * returns the current aspect ratio when getting
- */
-
- /**
- * A getter/setter for the `Player`'s aspect ratio.
- *
- * @param {string} [ratio]
- * The value to set the `Player`'s aspect ratio to.
- *
- * @return {string|undefined}
- * - The current aspect ratio of the `Player` when getting.
- * - undefined when setting
- */
- aspectRatio(ratio) {
- if (ratio === undefined) {
- return this.aspectRatio_;
- }
-
- // Check for width:height format
- if (!/^\d+\:\d+$/.test(ratio)) {
- throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');
- }
- this.aspectRatio_ = ratio;
-
- // We're assuming if you set an aspect ratio you want fluid mode,
- // because in fixed mode you could calculate width and height yourself.
- this.fluid(true);
- this.updateStyleEl_();
- }
-
- /**
- * Update styles of the `Player` element (height, width and aspect ratio).
- *
- * @private
- * @listens Tech#loadedmetadata
- */
- updateStyleEl_() {
- if (window.VIDEOJS_NO_DYNAMIC_STYLE === true) {
- const width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;
- const height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;
- const techEl = this.tech_ && this.tech_.el();
- if (techEl) {
- if (width >= 0) {
- techEl.width = width;
- }
- if (height >= 0) {
- techEl.height = height;
- }
- }
- return;
- }
- let width;
- let height;
- let aspectRatio;
- let idClass;
-
- // The aspect ratio is either used directly or to calculate width and height.
- if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {
- // Use any aspectRatio that's been specifically set
- aspectRatio = this.aspectRatio_;
- } else if (this.videoWidth() > 0) {
- // Otherwise try to get the aspect ratio from the video metadata
- aspectRatio = this.videoWidth() + ':' + this.videoHeight();
- } else {
- // Or use a default. The video element's is 2:1, but 16:9 is more common.
- aspectRatio = '16:9';
- }
-
- // Get the ratio as a decimal we can use to calculate dimensions
- const ratioParts = aspectRatio.split(':');
- const ratioMultiplier = ratioParts[1] / ratioParts[0];
- if (this.width_ !== undefined) {
- // Use any width that's been specifically set
- width = this.width_;
- } else if (this.height_ !== undefined) {
- // Or calculate the width from the aspect ratio if a height has been set
- width = this.height_ / ratioMultiplier;
- } else {
- // Or use the video's metadata, or use the video el's default of 300
- width = this.videoWidth() || 300;
- }
- if (this.height_ !== undefined) {
- // Use any height that's been specifically set
- height = this.height_;
- } else {
- // Otherwise calculate the height from the ratio and the width
- height = width * ratioMultiplier;
- }
-
- // Ensure the CSS class is valid by starting with an alpha character
- if (/^[^a-zA-Z]/.test(this.id())) {
- idClass = 'dimensions-' + this.id();
- } else {
- idClass = this.id() + '-dimensions';
- }
-
- // Ensure the right class is still on the player for the style element
- this.addClass(idClass);
- setTextContent(this.styleEl_, `
- .${idClass} {
- width: ${width}px;
- height: ${height}px;
- }
-
- .${idClass}.vjs-fluid:not(.vjs-audio-only-mode) {
- padding-top: ${ratioMultiplier * 100}%;
- }
- `);
- }
-
- /**
- * Load/Create an instance of playback {@link Tech} including element
- * and API methods. Then append the `Tech` element in `Player` as a child.
- *
- * @param {string} techName
- * name of the playback technology
- *
- * @param {string} source
- * video source
- *
- * @private
- */
- loadTech_(techName, source) {
- // Pause and remove current playback technology
- if (this.tech_) {
- this.unloadTech_();
- }
- const titleTechName = toTitleCase$1(techName);
- const camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);
-
- // get rid of the HTML5 video tag as soon as we are using another tech
- if (titleTechName !== 'Html5' && this.tag) {
- Tech.getTech('Html5').disposeMediaElement(this.tag);
- this.tag.player = null;
- this.tag = null;
- }
- this.techName_ = titleTechName;
-
- // Turn off API access because we're loading a new tech that might load asynchronously
- this.isReady_ = false;
- let autoplay = this.autoplay();
-
- // if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech
- // because the player is going to handle autoplay on `loadstart`
- if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {
- autoplay = false;
- }
-
- // Grab tech-specific options from player options and add source and parent element to use.
- const techOptions = {
- source,
- autoplay,
- 'nativeControlsForTouch': this.options_.nativeControlsForTouch,
- 'playerId': this.id(),
- 'techId': `${this.id()}_${camelTechName}_api`,
- 'playsinline': this.options_.playsinline,
- 'preload': this.options_.preload,
- 'loop': this.options_.loop,
- 'disablePictureInPicture': this.options_.disablePictureInPicture,
- 'muted': this.options_.muted,
- 'poster': this.poster(),
- 'language': this.language(),
- 'playerElIngest': this.playerElIngest_ || false,
- 'vtt.js': this.options_['vtt.js'],
- 'canOverridePoster': !!this.options_.techCanOverridePoster,
- 'enableSourceset': this.options_.enableSourceset
- };
- ALL.names.forEach(name => {
- const props = ALL[name];
- techOptions[props.getterName] = this[props.privateName];
- });
- Object.assign(techOptions, this.options_[titleTechName]);
- Object.assign(techOptions, this.options_[camelTechName]);
- Object.assign(techOptions, this.options_[techName.toLowerCase()]);
- if (this.tag) {
- techOptions.tag = this.tag;
- }
- if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {
- techOptions.startTime = this.cache_.currentTime;
- }
-
- // Initialize tech instance
- const TechClass = Tech.getTech(techName);
- if (!TechClass) {
- throw new Error(`No Tech named '${titleTechName}' exists! '${titleTechName}' should be registered using videojs.registerTech()'`);
- }
- this.tech_ = new TechClass(techOptions);
-
- // player.triggerReady is always async, so don't need this to be async
- this.tech_.ready(bind_(this, this.handleTechReady_), true);
- textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);
-
- // Listen to all HTML5-defined events and trigger them on the player
- TECH_EVENTS_RETRIGGER.forEach(event => {
- this.on(this.tech_, event, e => this[`handleTech${toTitleCase$1(event)}_`](e));
- });
- Object.keys(TECH_EVENTS_QUEUE).forEach(event => {
- this.on(this.tech_, event, eventObj => {
- if (this.tech_.playbackRate() === 0 && this.tech_.seeking()) {
- this.queuedCallbacks_.push({
- callback: this[`handleTech${TECH_EVENTS_QUEUE[event]}_`].bind(this),
- event: eventObj
- });
- return;
- }
- this[`handleTech${TECH_EVENTS_QUEUE[event]}_`](eventObj);
- });
- });
- this.on(this.tech_, 'loadstart', e => this.handleTechLoadStart_(e));
- this.on(this.tech_, 'sourceset', e => this.handleTechSourceset_(e));
- this.on(this.tech_, 'waiting', e => this.handleTechWaiting_(e));
- this.on(this.tech_, 'ended', e => this.handleTechEnded_(e));
- this.on(this.tech_, 'seeking', e => this.handleTechSeeking_(e));
- this.on(this.tech_, 'play', e => this.handleTechPlay_(e));
- this.on(this.tech_, 'pause', e => this.handleTechPause_(e));
- this.on(this.tech_, 'durationchange', e => this.handleTechDurationChange_(e));
- this.on(this.tech_, 'fullscreenchange', (e, data) => this.handleTechFullscreenChange_(e, data));
- this.on(this.tech_, 'fullscreenerror', (e, err) => this.handleTechFullscreenError_(e, err));
- this.on(this.tech_, 'enterpictureinpicture', e => this.handleTechEnterPictureInPicture_(e));
- this.on(this.tech_, 'leavepictureinpicture', e => this.handleTechLeavePictureInPicture_(e));
- this.on(this.tech_, 'error', e => this.handleTechError_(e));
- this.on(this.tech_, 'posterchange', e => this.handleTechPosterChange_(e));
- this.on(this.tech_, 'textdata', e => this.handleTechTextData_(e));
- this.on(this.tech_, 'ratechange', e => this.handleTechRateChange_(e));
- this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);
- this.usingNativeControls(this.techGet_('controls'));
- if (this.controls() && !this.usingNativeControls()) {
- this.addTechControlsListeners_();
- }
-
- // Add the tech element in the DOM if it was not already there
- // Make sure to not insert the original video element if using Html5
- if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {
- prependTo(this.tech_.el(), this.el());
- }
-
- // Get rid of the original video tag reference after the first tech is loaded
- if (this.tag) {
- this.tag.player = null;
- this.tag = null;
- }
- }
-
- /**
- * Unload and dispose of the current playback {@link Tech}.
- *
- * @private
- */
- unloadTech_() {
- // Save the current text tracks so that we can reuse the same text tracks with the next tech
- ALL.names.forEach(name => {
- const props = ALL[name];
- this[props.privateName] = this[props.getterName]();
- });
- this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);
- this.isReady_ = false;
- this.tech_.dispose();
- this.tech_ = false;
- if (this.isPosterFromTech_) {
- this.poster_ = '';
- this.trigger('posterchange');
- }
- this.isPosterFromTech_ = false;
- }
-
- /**
- * Return a reference to the current {@link Tech}.
- * It will print a warning by default about the danger of using the tech directly
- * but any argument that is passed in will silence the warning.
- *
- * @param {*} [safety]
- * Anything passed in to silence the warning
- *
- * @return {Tech}
- * The Tech
- */
- tech(safety) {
- if (safety === undefined) {
- log$1.warn('Using the tech directly can be dangerous. I hope you know what you\'re doing.\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\n');
- }
- return this.tech_;
- }
-
- /**
- * An object that contains Video.js version.
- *
- * @typedef {Object} PlayerVersion
- *
- * @property {string} 'video.js' - Video.js version
- */
-
- /**
- * Returns an object with Video.js version.
- *
- * @return {PlayerVersion}
- * An object with Video.js version.
- */
- version() {
- return {
- 'video.js': version$5
- };
- }
-
- /**
- * Set up click and touch listeners for the playback element
- *
- * - On desktops: a click on the video itself will toggle playback
- * - On mobile devices: a click on the video toggles controls
- * which is done by toggling the user state between active and
- * inactive
- * - A tap can signal that a user has become active or has become inactive
- * e.g. a quick tap on an iPhone movie should reveal the controls. Another
- * quick tap should hide them again (signaling the user is in an inactive
- * viewing state)
- * - In addition to this, we still want the user to be considered inactive after
- * a few seconds of inactivity.
- *
- * > Note: the only part of iOS interaction we can't mimic with this setup
- * is a touch and hold on the video element counting as activity in order to
- * keep the controls showing, but that shouldn't be an issue. A touch and hold
- * on any controls will still keep the user active
- *
- * @private
- */
- addTechControlsListeners_() {
- // Make sure to remove all the previous listeners in case we are called multiple times.
- this.removeTechControlsListeners_();
- this.on(this.tech_, 'click', this.boundHandleTechClick_);
- this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
-
- // If the controls were hidden we don't want that to change without a tap event
- // so we'll check if the controls were already showing before reporting user
- // activity
- this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
- this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
- this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
-
- // The tap listener needs to come after the touchend listener because the tap
- // listener cancels out any reportedUserActivity when setting userActive(false)
- this.on(this.tech_, 'tap', this.boundHandleTechTap_);
- }
-
- /**
- * Remove the listeners used for click and tap controls. This is needed for
- * toggling to controls disabled, where a tap/touch should do nothing.
- *
- * @private
- */
- removeTechControlsListeners_() {
- // We don't want to just use `this.off()` because there might be other needed
- // listeners added by techs that extend this.
- this.off(this.tech_, 'tap', this.boundHandleTechTap_);
- this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
- this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
- this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
- this.off(this.tech_, 'click', this.boundHandleTechClick_);
- this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
- }
-
- /**
- * Player waits for the tech to be ready
- *
- * @private
- */
- handleTechReady_() {
- this.triggerReady();
-
- // Keep the same volume as before
- if (this.cache_.volume) {
- this.techCall_('setVolume', this.cache_.volume);
- }
-
- // Look if the tech found a higher resolution poster while loading
- this.handleTechPosterChange_();
-
- // Update the duration if available
- this.handleTechDurationChange_();
- }
-
- /**
- * Retrigger the `loadstart` event that was triggered by the {@link Tech}.
- *
- * @fires Player#loadstart
- * @listens Tech#loadstart
- * @private
- */
- handleTechLoadStart_() {
- // TODO: Update to use `emptied` event instead. See #1277.
-
- this.removeClass('vjs-ended', 'vjs-seeking');
-
- // reset the error state
- this.error(null);
-
- // Update the duration
- this.handleTechDurationChange_();
- if (!this.paused()) {
- /**
- * Fired when the user agent begins looking for media data
- *
- * @event Player#loadstart
- * @type {Event}
- */
- this.trigger('loadstart');
- } else {
- // reset the hasStarted state
- this.hasStarted(false);
- this.trigger('loadstart');
- }
-
- // autoplay happens after loadstart for the browser,
- // so we mimic that behavior
- this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());
- }
-
- /**
- * Handle autoplay string values, rather than the typical boolean
- * values that should be handled by the tech. Note that this is not
- * part of any specification. Valid values and what they do can be
- * found on the autoplay getter at Player#autoplay()
- */
- manualAutoplay_(type) {
- if (!this.tech_ || typeof type !== 'string') {
- return;
- }
-
- // Save original muted() value, set muted to true, and attempt to play().
- // On promise rejection, restore muted from saved value
- const resolveMuted = () => {
- const previouslyMuted = this.muted();
- this.muted(true);
- const restoreMuted = () => {
- this.muted(previouslyMuted);
- };
-
- // restore muted on play terminatation
- this.playTerminatedQueue_.push(restoreMuted);
- const mutedPromise = this.play();
- if (!isPromise(mutedPromise)) {
- return;
- }
- return mutedPromise.catch(err => {
- restoreMuted();
- throw new Error(`Rejection at manualAutoplay. Restoring muted value. ${err ? err : ''}`);
- });
- };
- let promise;
-
- // if muted defaults to true
- // the only thing we can do is call play
- if (type === 'any' && !this.muted()) {
- promise = this.play();
- if (isPromise(promise)) {
- promise = promise.catch(resolveMuted);
- }
- } else if (type === 'muted' && !this.muted()) {
- promise = resolveMuted();
- } else {
- promise = this.play();
- }
- if (!isPromise(promise)) {
- return;
- }
- return promise.then(() => {
- this.trigger({
- type: 'autoplay-success',
- autoplay: type
- });
- }).catch(() => {
- this.trigger({
- type: 'autoplay-failure',
- autoplay: type
- });
- });
- }
-
- /**
- * Update the internal source caches so that we return the correct source from
- * `src()`, `currentSource()`, and `currentSources()`.
- *
- * > Note: `currentSources` will not be updated if the source that is passed in exists
- * in the current `currentSources` cache.
- *
- *
- * @param {Tech~SourceObject} srcObj
- * A string or object source to update our caches to.
- */
- updateSourceCaches_(srcObj = '') {
- let src = srcObj;
- let type = '';
- if (typeof src !== 'string') {
- src = srcObj.src;
- type = srcObj.type;
- }
-
- // make sure all the caches are set to default values
- // to prevent null checking
- this.cache_.source = this.cache_.source || {};
- this.cache_.sources = this.cache_.sources || [];
-
- // try to get the type of the src that was passed in
- if (src && !type) {
- type = findMimetype(this, src);
- }
-
- // update `currentSource` cache always
- this.cache_.source = merge$2({}, srcObj, {
- src,
- type
- });
- const matchingSources = this.cache_.sources.filter(s => s.src && s.src === src);
- const sourceElSources = [];
- const sourceEls = this.$$('source');
- const matchingSourceEls = [];
- for (let i = 0; i < sourceEls.length; i++) {
- const sourceObj = getAttributes(sourceEls[i]);
- sourceElSources.push(sourceObj);
- if (sourceObj.src && sourceObj.src === src) {
- matchingSourceEls.push(sourceObj.src);
- }
- }
-
- // if we have matching source els but not matching sources
- // the current source cache is not up to date
- if (matchingSourceEls.length && !matchingSources.length) {
- this.cache_.sources = sourceElSources;
- // if we don't have matching source or source els set the
- // sources cache to the `currentSource` cache
- } else if (!matchingSources.length) {
- this.cache_.sources = [this.cache_.source];
- }
-
- // update the tech `src` cache
- this.cache_.src = src;
- }
-
- /**
- * *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}
- * causing the media element to reload.
- *
- * It will fire for the initial source and each subsequent source.
- * This event is a custom event from Video.js and is triggered by the {@link Tech}.
- *
- * The event object for this event contains a `src` property that will contain the source
- * that was available when the event was triggered. This is generally only necessary if Video.js
- * is switching techs while the source was being changed.
- *
- * It is also fired when `load` is called on the player (or media element)
- * because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}
- * says that the resource selection algorithm needs to be aborted and restarted.
- * In this case, it is very likely that the `src` property will be set to the
- * empty string `""` to indicate we do not know what the source will be but
- * that it is changing.
- *
- * *This event is currently still experimental and may change in minor releases.*
- * __To use this, pass `enableSourceset` option to the player.__
- *
- * @event Player#sourceset
- * @type {Event}
- * @prop {string} src
- * The source url available when the `sourceset` was triggered.
- * It will be an empty string if we cannot know what the source is
- * but know that the source will change.
- */
- /**
- * Retrigger the `sourceset` event that was triggered by the {@link Tech}.
- *
- * @fires Player#sourceset
- * @listens Tech#sourceset
- * @private
- */
- handleTechSourceset_(event) {
- // only update the source cache when the source
- // was not updated using the player api
- if (!this.changingSrc_) {
- let updateSourceCaches = src => this.updateSourceCaches_(src);
- const playerSrc = this.currentSource().src;
- const eventSrc = event.src;
-
- // if we have a playerSrc that is not a blob, and a tech src that is a blob
- if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {
- // if both the tech source and the player source were updated we assume
- // something like @videojs/http-streaming did the sourceset and skip updating the source cache.
- if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {
- updateSourceCaches = () => {};
- }
- }
-
- // update the source to the initial source right away
- // in some cases this will be empty string
- updateSourceCaches(eventSrc);
-
- // if the `sourceset` `src` was an empty string
- // wait for a `loadstart` to update the cache to `currentSrc`.
- // If a sourceset happens before a `loadstart`, we reset the state
- if (!event.src) {
- this.tech_.any(['sourceset', 'loadstart'], e => {
- // if a sourceset happens before a `loadstart` there
- // is nothing to do as this `handleTechSourceset_`
- // will be called again and this will be handled there.
- if (e.type === 'sourceset') {
- return;
- }
- const techSrc = this.techGet_('currentSrc');
- this.lastSource_.tech = techSrc;
- this.updateSourceCaches_(techSrc);
- });
- }
- }
- this.lastSource_ = {
- player: this.currentSource().src,
- tech: event.src
- };
- this.trigger({
- src: event.src,
- type: 'sourceset'
- });
- }
-
- /**
- * Add/remove the vjs-has-started class
- *
- *
- * @param {boolean} request
- * - true: adds the class
- * - false: remove the class
- *
- * @return {boolean}
- * the boolean value of hasStarted_
- */
- hasStarted(request) {
- if (request === undefined) {
- // act as getter, if we have no request to change
- return this.hasStarted_;
- }
- if (request === this.hasStarted_) {
- return;
- }
- this.hasStarted_ = request;
- if (this.hasStarted_) {
- this.addClass('vjs-has-started');
- } else {
- this.removeClass('vjs-has-started');
- }
- }
-
- /**
- * Fired whenever the media begins or resumes playback
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}
- * @fires Player#play
- * @listens Tech#play
- * @private
- */
- handleTechPlay_() {
- this.removeClass('vjs-ended', 'vjs-paused');
- this.addClass('vjs-playing');
-
- // hide the poster when the user hits play
- this.hasStarted(true);
- /**
- * Triggered whenever an {@link Tech#play} event happens. Indicates that
- * playback has started or resumed.
- *
- * @event Player#play
- * @type {Event}
- */
- this.trigger('play');
- }
-
- /**
- * Retrigger the `ratechange` event that was triggered by the {@link Tech}.
- *
- * If there were any events queued while the playback rate was zero, fire
- * those events now.
- *
- * @private
- * @method Player#handleTechRateChange_
- * @fires Player#ratechange
- * @listens Tech#ratechange
- */
- handleTechRateChange_() {
- if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {
- this.queuedCallbacks_.forEach(queued => queued.callback(queued.event));
- this.queuedCallbacks_ = [];
- }
- this.cache_.lastPlaybackRate = this.tech_.playbackRate();
- /**
- * Fires when the playing speed of the audio/video is changed
- *
- * @event Player#ratechange
- * @type {event}
- */
- this.trigger('ratechange');
- }
-
- /**
- * Retrigger the `waiting` event that was triggered by the {@link Tech}.
- *
- * @fires Player#waiting
- * @listens Tech#waiting
- * @private
- */
- handleTechWaiting_() {
- this.addClass('vjs-waiting');
- /**
- * A readyState change on the DOM element has caused playback to stop.
- *
- * @event Player#waiting
- * @type {Event}
- */
- this.trigger('waiting');
-
- // Browsers may emit a timeupdate event after a waiting event. In order to prevent
- // premature removal of the waiting class, wait for the time to change.
- const timeWhenWaiting = this.currentTime();
- const timeUpdateListener = () => {
- if (timeWhenWaiting !== this.currentTime()) {
- this.removeClass('vjs-waiting');
- this.off('timeupdate', timeUpdateListener);
- }
- };
- this.on('timeupdate', timeUpdateListener);
- }
-
- /**
- * Retrigger the `canplay` event that was triggered by the {@link Tech}.
- * > Note: This is not consistent between browsers. See #1351
- *
- * @fires Player#canplay
- * @listens Tech#canplay
- * @private
- */
- handleTechCanPlay_() {
- this.removeClass('vjs-waiting');
- /**
- * The media has a readyState of HAVE_FUTURE_DATA or greater.
- *
- * @event Player#canplay
- * @type {Event}
- */
- this.trigger('canplay');
- }
-
- /**
- * Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.
- *
- * @fires Player#canplaythrough
- * @listens Tech#canplaythrough
- * @private
- */
- handleTechCanPlayThrough_() {
- this.removeClass('vjs-waiting');
- /**
- * The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the
- * entire media file can be played without buffering.
- *
- * @event Player#canplaythrough
- * @type {Event}
- */
- this.trigger('canplaythrough');
- }
-
- /**
- * Retrigger the `playing` event that was triggered by the {@link Tech}.
- *
- * @fires Player#playing
- * @listens Tech#playing
- * @private
- */
- handleTechPlaying_() {
- this.removeClass('vjs-waiting');
- /**
- * The media is no longer blocked from playback, and has started playing.
- *
- * @event Player#playing
- * @type {Event}
- */
- this.trigger('playing');
- }
-
- /**
- * Retrigger the `seeking` event that was triggered by the {@link Tech}.
- *
- * @fires Player#seeking
- * @listens Tech#seeking
- * @private
- */
- handleTechSeeking_() {
- this.addClass('vjs-seeking');
- /**
- * Fired whenever the player is jumping to a new time
- *
- * @event Player#seeking
- * @type {Event}
- */
- this.trigger('seeking');
- }
-
- /**
- * Retrigger the `seeked` event that was triggered by the {@link Tech}.
- *
- * @fires Player#seeked
- * @listens Tech#seeked
- * @private
- */
- handleTechSeeked_() {
- this.removeClass('vjs-seeking', 'vjs-ended');
- /**
- * Fired when the player has finished jumping to a new time
- *
- * @event Player#seeked
- * @type {Event}
- */
- this.trigger('seeked');
- }
-
- /**
- * Retrigger the `pause` event that was triggered by the {@link Tech}.
- *
- * @fires Player#pause
- * @listens Tech#pause
- * @private
- */
- handleTechPause_() {
- this.removeClass('vjs-playing');
- this.addClass('vjs-paused');
- /**
- * Fired whenever the media has been paused
- *
- * @event Player#pause
- * @type {Event}
- */
- this.trigger('pause');
- }
-
- /**
- * Retrigger the `ended` event that was triggered by the {@link Tech}.
- *
- * @fires Player#ended
- * @listens Tech#ended
- * @private
- */
- handleTechEnded_() {
- this.addClass('vjs-ended');
- this.removeClass('vjs-waiting');
- if (this.options_.loop) {
- this.currentTime(0);
- this.play();
- } else if (!this.paused()) {
- this.pause();
- }
-
- /**
- * Fired when the end of the media resource is reached (currentTime == duration)
- *
- * @event Player#ended
- * @type {Event}
- */
- this.trigger('ended');
- }
-
- /**
- * Fired when the duration of the media resource is first known or changed
- *
- * @listens Tech#durationchange
- * @private
- */
- handleTechDurationChange_() {
- this.duration(this.techGet_('duration'));
- }
-
- /**
- * Handle a click on the media element to play/pause
- *
- * @param {Event} event
- * the event that caused this function to trigger
- *
- * @listens Tech#click
- * @private
- */
- handleTechClick_(event) {
- // When controls are disabled a click should not toggle playback because
- // the click is considered a control
- if (!this.controls_) {
- return;
- }
- if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {
- if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {
- this.options_.userActions.click.call(this, event);
- } else if (this.paused()) {
- silencePromise(this.play());
- } else {
- this.pause();
- }
- }
- }
-
- /**
- * Handle a double-click on the media element to enter/exit fullscreen
- *
- * @param {Event} event
- * the event that caused this function to trigger
- *
- * @listens Tech#dblclick
- * @private
- */
- handleTechDoubleClick_(event) {
- if (!this.controls_) {
- return;
- }
-
- // we do not want to toggle fullscreen state
- // when double-clicking inside a control bar or a modal
- const inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), el => el.contains(event.target));
- if (!inAllowedEls) {
- /*
- * options.userActions.doubleClick
- *
- * If `undefined` or `true`, double-click toggles fullscreen if controls are present
- * Set to `false` to disable double-click handling
- * Set to a function to substitute an external double-click handler
- */
- if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {
- if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {
- this.options_.userActions.doubleClick.call(this, event);
- } else if (this.isFullscreen()) {
- this.exitFullscreen();
- } else {
- this.requestFullscreen();
- }
- }
- }
- }
-
- /**
- * Handle a tap on the media element. It will toggle the user
- * activity state, which hides and shows the controls.
- *
- * @listens Tech#tap
- * @private
- */
- handleTechTap_() {
- this.userActive(!this.userActive());
- }
-
- /**
- * Handle touch to start
- *
- * @listens Tech#touchstart
- * @private
- */
- handleTechTouchStart_() {
- this.userWasActive = this.userActive();
- }
-
- /**
- * Handle touch to move
- *
- * @listens Tech#touchmove
- * @private
- */
- handleTechTouchMove_() {
- if (this.userWasActive) {
- this.reportUserActivity();
- }
- }
-
- /**
- * Handle touch to end
- *
- * @param {Event} event
- * the touchend event that triggered
- * this function
- *
- * @listens Tech#touchend
- * @private
- */
- handleTechTouchEnd_(event) {
- // Stop the mouse events from also happening
- if (event.cancelable) {
- event.preventDefault();
- }
- }
-
- /**
- * @private
- */
- toggleFullscreenClass_() {
- if (this.isFullscreen()) {
- this.addClass('vjs-fullscreen');
- } else {
- this.removeClass('vjs-fullscreen');
- }
- }
-
- /**
- * when the document fschange event triggers it calls this
- */
- documentFullscreenChange_(e) {
- const targetPlayer = e.target.player;
-
- // if another player was fullscreen
- // do a null check for targetPlayer because older firefox's would put document as e.target
- if (targetPlayer && targetPlayer !== this) {
- return;
- }
- const el = this.el();
- let isFs = document[this.fsApi_.fullscreenElement] === el;
- if (!isFs && el.matches) {
- isFs = el.matches(':' + this.fsApi_.fullscreen);
- }
- this.isFullscreen(isFs);
- }
-
- /**
- * Handle Tech Fullscreen Change
- *
- * @param {Event} event
- * the fullscreenchange event that triggered this function
- *
- * @param {Object} data
- * the data that was sent with the event
- *
- * @private
- * @listens Tech#fullscreenchange
- * @fires Player#fullscreenchange
- */
- handleTechFullscreenChange_(event, data) {
- if (data) {
- if (data.nativeIOSFullscreen) {
- this.addClass('vjs-ios-native-fs');
- this.tech_.one('webkitendfullscreen', () => {
- this.removeClass('vjs-ios-native-fs');
- });
- }
- this.isFullscreen(data.isFullscreen);
- }
- }
- handleTechFullscreenError_(event, err) {
- this.trigger('fullscreenerror', err);
- }
-
- /**
- * @private
- */
- togglePictureInPictureClass_() {
- if (this.isInPictureInPicture()) {
- this.addClass('vjs-picture-in-picture');
- } else {
- this.removeClass('vjs-picture-in-picture');
- }
- }
-
- /**
- * Handle Tech Enter Picture-in-Picture.
- *
- * @param {Event} event
- * the enterpictureinpicture event that triggered this function
- *
- * @private
- * @listens Tech#enterpictureinpicture
- */
- handleTechEnterPictureInPicture_(event) {
- this.isInPictureInPicture(true);
- }
-
- /**
- * Handle Tech Leave Picture-in-Picture.
- *
- * @param {Event} event
- * the leavepictureinpicture event that triggered this function
- *
- * @private
- * @listens Tech#leavepictureinpicture
- */
- handleTechLeavePictureInPicture_(event) {
- this.isInPictureInPicture(false);
- }
-
- /**
- * Fires when an error occurred during the loading of an audio/video.
- *
- * @private
- * @listens Tech#error
- */
- handleTechError_() {
- const error = this.tech_.error();
- if (error) {
- this.error(error);
- }
- }
-
- /**
- * Retrigger the `textdata` event that was triggered by the {@link Tech}.
- *
- * @fires Player#textdata
- * @listens Tech#textdata
- * @private
- */
- handleTechTextData_() {
- let data = null;
- if (arguments.length > 1) {
- data = arguments[1];
- }
-
- /**
- * Fires when we get a textdata event from tech
- *
- * @event Player#textdata
- * @type {Event}
- */
- this.trigger('textdata', data);
- }
-
- /**
- * Get object for cached values.
- *
- * @return {Object}
- * get the current object cache
- */
- getCache() {
- return this.cache_;
- }
-
- /**
- * Resets the internal cache object.
- *
- * Using this function outside the player constructor or reset method may
- * have unintended side-effects.
- *
- * @private
- */
- resetCache_() {
- this.cache_ = {
- // Right now, the currentTime is not _really_ cached because it is always
- // retrieved from the tech (see: currentTime). However, for completeness,
- // we set it to zero here to ensure that if we do start actually caching
- // it, we reset it along with everything else.
- currentTime: 0,
- initTime: 0,
- inactivityTimeout: this.options_.inactivityTimeout,
- duration: NaN,
- lastVolume: 1,
- lastPlaybackRate: this.defaultPlaybackRate(),
- media: null,
- src: '',
- source: {},
- sources: [],
- playbackRates: [],
- volume: 1
- };
- }
-
- /**
- * Pass values to the playback tech
- *
- * @param {string} [method]
- * the method to call
- *
- * @param {Object} [arg]
- * the argument to pass
- *
- * @private
- */
- techCall_(method, arg) {
- // If it's not ready yet, call method when it is
-
- this.ready(function () {
- if (method in allowedSetters) {
- return set(this.middleware_, this.tech_, method, arg);
- } else if (method in allowedMediators) {
- return mediate(this.middleware_, this.tech_, method, arg);
- }
- try {
- if (this.tech_) {
- this.tech_[method](arg);
- }
- } catch (e) {
- log$1(e);
- throw e;
- }
- }, true);
- }
-
- /**
- * Mediate attempt to call playback tech method
- * and return the value of the method called.
- *
- * @param {string} method
- * Tech method
- *
- * @return {*}
- * Value returned by the tech method called, undefined if tech
- * is not ready or tech method is not present
- *
- * @private
- */
- techGet_(method) {
- if (!this.tech_ || !this.tech_.isReady_) {
- return;
- }
- if (method in allowedGetters) {
- return get(this.middleware_, this.tech_, method);
- } else if (method in allowedMediators) {
- return mediate(this.middleware_, this.tech_, method);
- }
-
- // Log error when playback tech object is present but method
- // is undefined or unavailable
- try {
- return this.tech_[method]();
- } catch (e) {
- // When building additional tech libs, an expected method may not be defined yet
- if (this.tech_[method] === undefined) {
- log$1(`Video.js: ${method} method not defined for ${this.techName_} playback technology.`, e);
- throw e;
- }
-
- // When a method isn't available on the object it throws a TypeError
- if (e.name === 'TypeError') {
- log$1(`Video.js: ${method} unavailable on ${this.techName_} playback technology element.`, e);
- this.tech_.isReady_ = false;
- throw e;
- }
-
- // If error unknown, just log and throw
- log$1(e);
- throw e;
- }
- }
-
- /**
- * Attempt to begin playback at the first opportunity.
- *
- * @return {Promise|undefined}
- * Returns a promise if the browser supports Promises (or one
- * was passed in as an option). This promise will be resolved on
- * the return value of play. If this is undefined it will fulfill the
- * promise chain otherwise the promise chain will be fulfilled when
- * the promise from play is fulfilled.
- */
- play() {
- return new Promise(resolve => {
- this.play_(resolve);
- });
- }
-
- /**
- * The actual logic for play, takes a callback that will be resolved on the
- * return value of play. This allows us to resolve to the play promise if there
- * is one on modern browsers.
- *
- * @private
- * @param {Function} [callback]
- * The callback that should be called when the techs play is actually called
- */
- play_(callback = silencePromise) {
- this.playCallbacks_.push(callback);
- const isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));
- const isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS);
-
- // treat calls to play_ somewhat like the `one` event function
- if (this.waitToPlay_) {
- this.off(['ready', 'loadstart'], this.waitToPlay_);
- this.waitToPlay_ = null;
- }
-
- // if the player/tech is not ready or the src itself is not ready
- // queue up a call to play on `ready` or `loadstart`
- if (!this.isReady_ || !isSrcReady) {
- this.waitToPlay_ = e => {
- this.play_();
- };
- this.one(['ready', 'loadstart'], this.waitToPlay_);
-
- // if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod
- // in that case, we need to prime the video element by calling load so it'll be ready in time
- if (!isSrcReady && isSafariOrIOS) {
- this.load();
- }
- return;
- }
-
- // If the player/tech is ready and we have a source, we can attempt playback.
- const val = this.techGet_('play');
-
- // For native playback, reset the progress bar if we get a play call from a replay.
- const isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');
- if (isNativeReplay) {
- this.resetProgressBar_();
- }
- // play was terminated if the returned value is null
- if (val === null) {
- this.runPlayTerminatedQueue_();
- } else {
- this.runPlayCallbacks_(val);
- }
- }
-
- /**
- * These functions will be run when if play is terminated. If play
- * runPlayCallbacks_ is run these function will not be run. This allows us
- * to differentiate between a terminated play and an actual call to play.
- */
- runPlayTerminatedQueue_() {
- const queue = this.playTerminatedQueue_.slice(0);
- this.playTerminatedQueue_ = [];
- queue.forEach(function (q) {
- q();
- });
- }
-
- /**
- * When a callback to play is delayed we have to run these
- * callbacks when play is actually called on the tech. This function
- * runs the callbacks that were delayed and accepts the return value
- * from the tech.
- *
- * @param {undefined|Promise} val
- * The return value from the tech.
- */
- runPlayCallbacks_(val) {
- const callbacks = this.playCallbacks_.slice(0);
- this.playCallbacks_ = [];
- // clear play terminatedQueue since we finished a real play
- this.playTerminatedQueue_ = [];
- callbacks.forEach(function (cb) {
- cb(val);
- });
- }
-
- /**
- * Pause the video playback
- */
- pause() {
- this.techCall_('pause');
- }
-
- /**
- * Check if the player is paused or has yet to play
- *
- * @return {boolean}
- * - false: if the media is currently playing
- * - true: if media is not currently playing
- */
- paused() {
- // The initial state of paused should be true (in Safari it's actually false)
- return this.techGet_('paused') === false ? false : true;
- }
-
- /**
- * Get a TimeRange object representing the current ranges of time that the user
- * has played.
- *
- * @return { import('./utils/time').TimeRange }
- * A time range object that represents all the increments of time that have
- * been played.
- */
- played() {
- return this.techGet_('played') || createTimeRanges$1(0, 0);
- }
-
- /**
- * Sets or returns whether or not the user is "scrubbing". Scrubbing is
- * when the user has clicked the progress bar handle and is
- * dragging it along the progress bar.
- *
- * @param {boolean} [isScrubbing]
- * whether the user is or is not scrubbing
- *
- * @return {boolean|undefined}
- * - The value of scrubbing when getting
- * - Nothing when setting
- */
- scrubbing(isScrubbing) {
- if (typeof isScrubbing === 'undefined') {
- return this.scrubbing_;
- }
- this.scrubbing_ = !!isScrubbing;
- this.techCall_('setScrubbing', this.scrubbing_);
- if (isScrubbing) {
- this.addClass('vjs-scrubbing');
- } else {
- this.removeClass('vjs-scrubbing');
- }
- }
-
- /**
- * Get or set the current time (in seconds)
- *
- * @param {number|string} [seconds]
- * The time to seek to in seconds
- *
- * @return {number|undefined}
- * - the current time in seconds when getting
- * - Nothing when setting
- */
- currentTime(seconds) {
- if (seconds === undefined) {
- // cache last currentTime and return. default to 0 seconds
- //
- // Caching the currentTime is meant to prevent a massive amount of reads on the tech's
- // currentTime when scrubbing, but may not provide much performance benefit after all.
- // Should be tested. Also something has to read the actual current time or the cache will
- // never get updated.
- this.cache_.currentTime = this.techGet_('currentTime') || 0;
- return this.cache_.currentTime;
- }
- if (seconds < 0) {
- seconds = 0;
- }
- if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {
- this.cache_.initTime = seconds;
- this.off('canplay', this.boundApplyInitTime_);
- this.one('canplay', this.boundApplyInitTime_);
- return;
- }
- this.techCall_('setCurrentTime', seconds);
- this.cache_.initTime = 0;
- if (isFinite(seconds)) {
- this.cache_.currentTime = Number(seconds);
- }
- }
-
- /**
- * Apply the value of initTime stored in cache as currentTime.
- *
- * @private
- */
- applyInitTime_() {
- this.currentTime(this.cache_.initTime);
- }
-
- /**
- * Normally gets the length in time of the video in seconds;
- * in all but the rarest use cases an argument will NOT be passed to the method
- *
- * > **NOTE**: The video must have started loading before the duration can be
- * known, and depending on preload behaviour may not be known until the video starts
- * playing.
- *
- * @fires Player#durationchange
- *
- * @param {number} [seconds]
- * The duration of the video to set in seconds
- *
- * @return {number|undefined}
- * - The duration of the video in seconds when getting
- * - Nothing when setting
- */
- duration(seconds) {
- if (seconds === undefined) {
- // return NaN if the duration is not known
- return this.cache_.duration !== undefined ? this.cache_.duration : NaN;
- }
- seconds = parseFloat(seconds);
-
- // Standardize on Infinity for signaling video is live
- if (seconds < 0) {
- seconds = Infinity;
- }
- if (seconds !== this.cache_.duration) {
- // Cache the last set value for optimized scrubbing
- this.cache_.duration = seconds;
- if (seconds === Infinity) {
- this.addClass('vjs-live');
- } else {
- this.removeClass('vjs-live');
- }
- if (!isNaN(seconds)) {
- // Do not fire durationchange unless the duration value is known.
- // @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}
-
- /**
- * @event Player#durationchange
- * @type {Event}
- */
- this.trigger('durationchange');
- }
- }
- }
-
- /**
- * Calculates how much time is left in the video. Not part
- * of the native video API.
- *
- * @return {number}
- * The time remaining in seconds
- */
- remainingTime() {
- return this.duration() - this.currentTime();
- }
-
- /**
- * A remaining time function that is intended to be used when
- * the time is to be displayed directly to the user.
- *
- * @return {number}
- * The rounded time remaining in seconds
- */
- remainingTimeDisplay() {
- return Math.floor(this.duration()) - Math.floor(this.currentTime());
- }
-
- //
- // Kind of like an array of portions of the video that have been downloaded.
-
- /**
- * Get a TimeRange object with an array of the times of the video
- * that have been downloaded. If you just want the percent of the
- * video that's been downloaded, use bufferedPercent.
- *
- * @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}
- *
- * @return { import('./utils/time').TimeRange }
- * A mock {@link TimeRanges} object (following HTML spec)
- */
- buffered() {
- let buffered = this.techGet_('buffered');
- if (!buffered || !buffered.length) {
- buffered = createTimeRanges$1(0, 0);
- }
- return buffered;
- }
-
- /**
- * Get the TimeRanges of the media that are currently available
- * for seeking to.
- *
- * @see [Seekable Spec]{@link https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable}
- *
- * @return { import('./utils/time').TimeRange }
- * A mock {@link TimeRanges} object (following HTML spec)
- */
- seekable() {
- let seekable = this.techGet_('seekable');
- if (!seekable || !seekable.length) {
- seekable = createTimeRanges$1(0, 0);
- }
- return seekable;
- }
-
- /**
- * Returns whether the player is in the "seeking" state.
- *
- * @return {boolean} True if the player is in the seeking state, false if not.
- */
- seeking() {
- return this.techGet_('seeking');
- }
-
- /**
- * Returns whether the player is in the "ended" state.
- *
- * @return {boolean} True if the player is in the ended state, false if not.
- */
- ended() {
- return this.techGet_('ended');
- }
-
- /**
- * Returns the current state of network activity for the element, from
- * the codes in the list below.
- * - NETWORK_EMPTY (numeric value 0)
- * The element has not yet been initialised. All attributes are in
- * their initial states.
- * - NETWORK_IDLE (numeric value 1)
- * The element's resource selection algorithm is active and has
- * selected a resource, but it is not actually using the network at
- * this time.
- * - NETWORK_LOADING (numeric value 2)
- * The user agent is actively trying to download data.
- * - NETWORK_NO_SOURCE (numeric value 3)
- * The element's resource selection algorithm is active, but it has
- * not yet found a resource to use.
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
- * @return {number} the current network activity state
- */
- networkState() {
- return this.techGet_('networkState');
- }
-
- /**
- * Returns a value that expresses the current state of the element
- * with respect to rendering the current playback position, from the
- * codes in the list below.
- * - HAVE_NOTHING (numeric value 0)
- * No information regarding the media resource is available.
- * - HAVE_METADATA (numeric value 1)
- * Enough of the resource has been obtained that the duration of the
- * resource is available.
- * - HAVE_CURRENT_DATA (numeric value 2)
- * Data for the immediate current playback position is available.
- * - HAVE_FUTURE_DATA (numeric value 3)
- * Data for the immediate current playback position is available, as
- * well as enough data for the user agent to advance the current
- * playback position in the direction of playback.
- * - HAVE_ENOUGH_DATA (numeric value 4)
- * The user agent estimates that enough data is available for
- * playback to proceed uninterrupted.
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
- * @return {number} the current playback rendering state
- */
- readyState() {
- return this.techGet_('readyState');
- }
-
- /**
- * Get the percent (as a decimal) of the video that's been downloaded.
- * This method is not a part of the native HTML video API.
- *
- * @return {number}
- * A decimal between 0 and 1 representing the percent
- * that is buffered 0 being 0% and 1 being 100%
- */
- bufferedPercent() {
- return bufferedPercent(this.buffered(), this.duration());
- }
-
- /**
- * Get the ending time of the last buffered time range
- * This is used in the progress bar to encapsulate all time ranges.
- *
- * @return {number}
- * The end of the last buffered time range
- */
- bufferedEnd() {
- const buffered = this.buffered();
- const duration = this.duration();
- let end = buffered.end(buffered.length - 1);
- if (end > duration) {
- end = duration;
- }
- return end;
- }
-
- /**
- * Get or set the current volume of the media
- *
- * @param {number} [percentAsDecimal]
- * The new volume as a decimal percent:
- * - 0 is muted/0%/off
- * - 1.0 is 100%/full
- * - 0.5 is half volume or 50%
- *
- * @return {number|undefined}
- * The current volume as a percent when getting
- */
- volume(percentAsDecimal) {
- let vol;
- if (percentAsDecimal !== undefined) {
- // Force value to between 0 and 1
- vol = Math.max(0, Math.min(1, percentAsDecimal));
- this.cache_.volume = vol;
- this.techCall_('setVolume', vol);
- if (vol > 0) {
- this.lastVolume_(vol);
- }
- return;
- }
-
- // Default to 1 when returning current volume.
- vol = parseFloat(this.techGet_('volume'));
- return isNaN(vol) ? 1 : vol;
- }
-
- /**
- * Get the current muted state, or turn mute on or off
- *
- * @param {boolean} [muted]
- * - true to mute
- * - false to unmute
- *
- * @return {boolean|undefined}
- * - true if mute is on and getting
- * - false if mute is off and getting
- * - nothing if setting
- */
- muted(muted) {
- if (muted !== undefined) {
- this.techCall_('setMuted', muted);
- return;
- }
- return this.techGet_('muted') || false;
- }
-
- /**
- * Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted
- * indicates the state of muted on initial playback.
- *
- * ```js
- * var myPlayer = videojs('some-player-id');
- *
- * myPlayer.src("http://www.example.com/path/to/video.mp4");
- *
- * // get, should be false
- * console.log(myPlayer.defaultMuted());
- * // set to true
- * myPlayer.defaultMuted(true);
- * // get should be true
- * console.log(myPlayer.defaultMuted());
- * ```
- *
- * @param {boolean} [defaultMuted]
- * - true to mute
- * - false to unmute
- *
- * @return {boolean|undefined}
- * - true if defaultMuted is on and getting
- * - false if defaultMuted is off and getting
- * - Nothing when setting
- */
- defaultMuted(defaultMuted) {
- if (defaultMuted !== undefined) {
- this.techCall_('setDefaultMuted', defaultMuted);
- }
- return this.techGet_('defaultMuted') || false;
- }
-
- /**
- * Get the last volume, or set it
- *
- * @param {number} [percentAsDecimal]
- * The new last volume as a decimal percent:
- * - 0 is muted/0%/off
- * - 1.0 is 100%/full
- * - 0.5 is half volume or 50%
- *
- * @return {number|undefined}
- * - The current value of lastVolume as a percent when getting
- * - Nothing when setting
- *
- * @private
- */
- lastVolume_(percentAsDecimal) {
- if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {
- this.cache_.lastVolume = percentAsDecimal;
- return;
- }
- return this.cache_.lastVolume;
- }
-
- /**
- * Check if current tech can support native fullscreen
- * (e.g. with built in controls like iOS)
- *
- * @return {boolean}
- * if native fullscreen is supported
- */
- supportsFullScreen() {
- return this.techGet_('supportsFullScreen') || false;
- }
-
- /**
- * Check if the player is in fullscreen mode or tell the player that it
- * is or is not in fullscreen mode.
- *
- * > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official
- * property and instead document.fullscreenElement is used. But isFullscreen is
- * still a valuable property for internal player workings.
- *
- * @param {boolean} [isFS]
- * Set the players current fullscreen state
- *
- * @return {boolean|undefined}
- * - true if fullscreen is on and getting
- * - false if fullscreen is off and getting
- * - Nothing when setting
- */
- isFullscreen(isFS) {
- if (isFS !== undefined) {
- const oldValue = this.isFullscreen_;
- this.isFullscreen_ = Boolean(isFS);
-
- // if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange
- // this is the only place where we trigger fullscreenchange events for older browsers
- // fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well
- if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {
- /**
- * @event Player#fullscreenchange
- * @type {Event}
- */
- this.trigger('fullscreenchange');
- }
- this.toggleFullscreenClass_();
- return;
- }
- return this.isFullscreen_;
- }
-
- /**
- * Increase the size of the video to full screen
- * In some browsers, full screen is not supported natively, so it enters
- * "full window mode", where the video fills the browser window.
- * In browsers and devices that support native full screen, sometimes the
- * browser's default controls will be shown, and not the Video.js custom skin.
- * This includes most mobile devices (iOS, Android) and older versions of
- * Safari.
- *
- * @param {Object} [fullscreenOptions]
- * Override the player fullscreen options
- *
- * @fires Player#fullscreenchange
- */
- requestFullscreen(fullscreenOptions) {
- if (this.isInPictureInPicture()) {
- this.exitPictureInPicture();
- }
- const self = this;
- return new Promise((resolve, reject) => {
- function offHandler() {
- self.off('fullscreenerror', errorHandler);
- self.off('fullscreenchange', changeHandler);
- }
- function changeHandler() {
- offHandler();
- resolve();
- }
- function errorHandler(e, err) {
- offHandler();
- reject(err);
- }
- self.one('fullscreenchange', changeHandler);
- self.one('fullscreenerror', errorHandler);
- const promise = self.requestFullscreenHelper_(fullscreenOptions);
- if (promise) {
- promise.then(offHandler, offHandler);
- promise.then(resolve, reject);
- }
- });
- }
- requestFullscreenHelper_(fullscreenOptions) {
- let fsOptions;
-
- // Only pass fullscreen options to requestFullscreen in spec-compliant browsers.
- // Use defaults or player configured option unless passed directly to this method.
- if (!this.fsApi_.prefixed) {
- fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};
- if (fullscreenOptions !== undefined) {
- fsOptions = fullscreenOptions;
- }
- }
-
- // This method works as follows:
- // 1. if a fullscreen api is available, use it
- // 1. call requestFullscreen with potential options
- // 2. if we got a promise from above, use it to update isFullscreen()
- // 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.
- // This is particularly used for iPhone, older iPads, and non-safari browser on iOS.
- // 3. otherwise, use "fullWindow" mode
- if (this.fsApi_.requestFullscreen) {
- const promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);
-
- // Even on browsers with promise support this may not return a promise
- if (promise) {
- promise.then(() => this.isFullscreen(true), () => this.isFullscreen(false));
- }
- return promise;
- } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
- // we can't take the video.js controls fullscreen but we can go fullscreen
- // with native controls
- this.techCall_('enterFullScreen');
- } else {
- // fullscreen isn't supported so we'll just stretch the video element to
- // fill the viewport
- this.enterFullWindow();
- }
- }
-
- /**
- * Return the video to its normal size after having been in full screen mode
- *
- * @fires Player#fullscreenchange
- */
- exitFullscreen() {
- const self = this;
- return new Promise((resolve, reject) => {
- function offHandler() {
- self.off('fullscreenerror', errorHandler);
- self.off('fullscreenchange', changeHandler);
- }
- function changeHandler() {
- offHandler();
- resolve();
- }
- function errorHandler(e, err) {
- offHandler();
- reject(err);
- }
- self.one('fullscreenchange', changeHandler);
- self.one('fullscreenerror', errorHandler);
- const promise = self.exitFullscreenHelper_();
- if (promise) {
- promise.then(offHandler, offHandler);
- // map the promise to our resolve/reject methods
- promise.then(resolve, reject);
- }
- });
- }
- exitFullscreenHelper_() {
- if (this.fsApi_.requestFullscreen) {
- const promise = document[this.fsApi_.exitFullscreen]();
-
- // Even on browsers with promise support this may not return a promise
- if (promise) {
- // we're splitting the promise here, so, we want to catch the
- // potential error so that this chain doesn't have unhandled errors
- silencePromise(promise.then(() => this.isFullscreen(false)));
- }
- return promise;
- } else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
- this.techCall_('exitFullScreen');
- } else {
- this.exitFullWindow();
- }
- }
-
- /**
- * When fullscreen isn't supported we can stretch the
- * video container to as wide as the browser will let us.
- *
- * @fires Player#enterFullWindow
- */
- enterFullWindow() {
- this.isFullscreen(true);
- this.isFullWindow = true;
-
- // Storing original doc overflow value to return to when fullscreen is off
- this.docOrigOverflow = document.documentElement.style.overflow;
-
- // Add listener for esc key to exit fullscreen
- on(document, 'keydown', this.boundFullWindowOnEscKey_);
-
- // Hide any scroll bars
- document.documentElement.style.overflow = 'hidden';
-
- // Apply fullscreen styles
- addClass(document.body, 'vjs-full-window');
-
- /**
- * @event Player#enterFullWindow
- * @type {Event}
- */
- this.trigger('enterFullWindow');
- }
-
- /**
- * Check for call to either exit full window or
- * full screen on ESC key
- *
- * @param {string} event
- * Event to check for key press
- */
- fullWindowOnEscKey(event) {
- if (keycode.isEventKey(event, 'Esc')) {
- if (this.isFullscreen() === true) {
- if (!this.isFullWindow) {
- this.exitFullscreen();
- } else {
- this.exitFullWindow();
- }
- }
- }
- }
-
- /**
- * Exit full window
- *
- * @fires Player#exitFullWindow
- */
- exitFullWindow() {
- this.isFullscreen(false);
- this.isFullWindow = false;
- off(document, 'keydown', this.boundFullWindowOnEscKey_);
-
- // Unhide scroll bars.
- document.documentElement.style.overflow = this.docOrigOverflow;
-
- // Remove fullscreen styles
- removeClass(document.body, 'vjs-full-window');
-
- // Resize the box, controller, and poster to original sizes
- // this.positionAll();
- /**
- * @event Player#exitFullWindow
- * @type {Event}
- */
- this.trigger('exitFullWindow');
- }
-
- /**
- * Get or set disable Picture-in-Picture mode.
- *
- * @param {boolean} [value]
- * - true will disable Picture-in-Picture mode
- * - false will enable Picture-in-Picture mode
- */
- disablePictureInPicture(value) {
- if (value === undefined) {
- return this.techGet_('disablePictureInPicture');
- }
- this.techCall_('setDisablePictureInPicture', value);
- this.options_.disablePictureInPicture = value;
- this.trigger('disablepictureinpicturechanged');
- }
-
- /**
- * Check if the player is in Picture-in-Picture mode or tell the player that it
- * is or is not in Picture-in-Picture mode.
- *
- * @param {boolean} [isPiP]
- * Set the players current Picture-in-Picture state
- *
- * @return {boolean|undefined}
- * - true if Picture-in-Picture is on and getting
- * - false if Picture-in-Picture is off and getting
- * - nothing if setting
- */
- isInPictureInPicture(isPiP) {
- if (isPiP !== undefined) {
- this.isInPictureInPicture_ = !!isPiP;
- this.togglePictureInPictureClass_();
- return;
- }
- return !!this.isInPictureInPicture_;
- }
-
- /**
- * Create a floating video window always on top of other windows so that users may
- * continue consuming media while they interact with other content sites, or
- * applications on their device.
- *
- * This can use document picture-in-picture or element picture in picture
- *
- * Set `enableDocumentPictureInPicture` to `true` to use docPiP on a supported browser
- * Else set `disablePictureInPicture` to `false` to disable elPiP on a supported browser
- *
- *
- * @see [Spec]{@link https://w3c.github.io/picture-in-picture/}
- * @see [Spec]{@link https://wicg.github.io/document-picture-in-picture/}
- *
- * @fires Player#enterpictureinpicture
- *
- * @return {Promise}
- * A promise with a Picture-in-Picture window.
- */
- requestPictureInPicture() {
- if (this.options_.enableDocumentPictureInPicture && window.documentPictureInPicture) {
- const pipContainer = document.createElement(this.el().tagName);
- pipContainer.classList = this.el().classList;
- pipContainer.classList.add('vjs-pip-container');
- if (this.posterImage) {
- pipContainer.appendChild(this.posterImage.el().cloneNode(true));
- }
- if (this.titleBar) {
- pipContainer.appendChild(this.titleBar.el().cloneNode(true));
- }
- pipContainer.appendChild(createEl('p', {
- className: 'vjs-pip-text'
- }, {}, this.localize('Playing in picture-in-picture')));
- return window.documentPictureInPicture.requestWindow({
- // The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629
- width: this.videoWidth(),
- height: this.videoHeight()
- }).then(pipWindow => {
- copyStyleSheetsToWindow(pipWindow);
- this.el_.parentNode.insertBefore(pipContainer, this.el_);
- pipWindow.document.body.appendChild(this.el_);
- pipWindow.document.body.classList.add('vjs-pip-window');
- this.player_.isInPictureInPicture(true);
- this.player_.trigger({
- type: 'enterpictureinpicture',
- pipWindow
- });
-
- // Listen for the PiP closing event to move the video back.
- pipWindow.addEventListener('pagehide', event => {
- const pipVideo = event.target.querySelector('.video-js');
- pipContainer.parentNode.replaceChild(pipVideo, pipContainer);
- this.player_.isInPictureInPicture(false);
- this.player_.trigger('leavepictureinpicture');
- });
- return pipWindow;
- });
- }
- if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {
- /**
- * This event fires when the player enters picture in picture mode
- *
- * @event Player#enterpictureinpicture
- * @type {Event}
- */
- return this.techGet_('requestPictureInPicture');
- }
- return Promise.reject('No PiP mode is available');
- }
-
- /**
- * Exit Picture-in-Picture mode.
- *
- * @see [Spec]{@link https://wicg.github.io/picture-in-picture}
- *
- * @fires Player#leavepictureinpicture
- *
- * @return {Promise}
- * A promise.
- */
- exitPictureInPicture() {
- if (window.documentPictureInPicture && window.documentPictureInPicture.window) {
- // With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler
- window.documentPictureInPicture.window.close();
- return Promise.resolve();
- }
- if ('pictureInPictureEnabled' in document) {
- /**
- * This event fires when the player leaves picture in picture mode
- *
- * @event Player#leavepictureinpicture
- * @type {Event}
- */
- return document.exitPictureInPicture();
- }
- }
-
- /**
- * Called when this Player has focus and a key gets pressed down, or when
- * any Component of this player receives a key press that it doesn't handle.
- * This allows player-wide hotkeys (either as defined below, or optionally
- * by an external function).
- *
- * @param {KeyboardEvent} event
- * The `keydown` event that caused this function to be called.
- *
- * @listens keydown
- */
- handleKeyDown(event) {
- const {
- userActions
- } = this.options_;
-
- // Bail out if hotkeys are not configured.
- if (!userActions || !userActions.hotkeys) {
- return;
- }
-
- // Function that determines whether or not to exclude an element from
- // hotkeys handling.
- const excludeElement = el => {
- const tagName = el.tagName.toLowerCase();
-
- // The first and easiest test is for `contenteditable` elements.
- if (el.isContentEditable) {
- return true;
- }
-
- // Inputs matching these types will still trigger hotkey handling as
- // they are not text inputs.
- const allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];
- if (tagName === 'input') {
- return allowedInputTypes.indexOf(el.type) === -1;
- }
-
- // The final test is by tag name. These tags will be excluded entirely.
- const excludedTags = ['textarea'];
- return excludedTags.indexOf(tagName) !== -1;
- };
-
- // Bail out if the user is focused on an interactive form element.
- if (excludeElement(this.el_.ownerDocument.activeElement)) {
- return;
- }
- if (typeof userActions.hotkeys === 'function') {
- userActions.hotkeys.call(this, event);
- } else {
- this.handleHotkeys(event);
- }
- }
-
- /**
- * Called when this Player receives a hotkey keydown event.
- * Supported player-wide hotkeys are:
- *
- * f - toggle fullscreen
- * m - toggle mute
- * k or Space - toggle play/pause
- *
- * @param {Event} event
- * The `keydown` event that caused this function to be called.
- */
- handleHotkeys(event) {
- const hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {};
-
- // set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set
- const {
- fullscreenKey = keydownEvent => keycode.isEventKey(keydownEvent, 'f'),
- muteKey = keydownEvent => keycode.isEventKey(keydownEvent, 'm'),
- playPauseKey = keydownEvent => keycode.isEventKey(keydownEvent, 'k') || keycode.isEventKey(keydownEvent, 'Space')
- } = hotkeys;
- if (fullscreenKey.call(this, event)) {
- event.preventDefault();
- event.stopPropagation();
- const FSToggle = Component$1.getComponent('FullscreenToggle');
- if (document[this.fsApi_.fullscreenEnabled] !== false) {
- FSToggle.prototype.handleClick.call(this, event);
- }
- } else if (muteKey.call(this, event)) {
- event.preventDefault();
- event.stopPropagation();
- const MuteToggle = Component$1.getComponent('MuteToggle');
- MuteToggle.prototype.handleClick.call(this, event);
- } else if (playPauseKey.call(this, event)) {
- event.preventDefault();
- event.stopPropagation();
- const PlayToggle = Component$1.getComponent('PlayToggle');
- PlayToggle.prototype.handleClick.call(this, event);
- }
- }
-
- /**
- * Check whether the player can play a given mimetype
- *
- * @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype
- *
- * @param {string} type
- * The mimetype to check
- *
- * @return {string}
- * 'probably', 'maybe', or '' (empty string)
- */
- canPlayType(type) {
- let can;
-
- // Loop through each playback technology in the options order
- for (let i = 0, j = this.options_.techOrder; i < j.length; i++) {
- const techName = j[i];
- let tech = Tech.getTech(techName);
-
- // Support old behavior of techs being registered as components.
- // Remove once that deprecated behavior is removed.
- if (!tech) {
- tech = Component$1.getComponent(techName);
- }
-
- // Check if the current tech is defined before continuing
- if (!tech) {
- log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
- continue;
- }
-
- // Check if the browser supports this technology
- if (tech.isSupported()) {
- can = tech.canPlayType(type);
- if (can) {
- return can;
- }
- }
- }
- return '';
- }
-
- /**
- * Select source based on tech-order or source-order
- * Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,
- * defaults to tech-order selection
- *
- * @param {Array} sources
- * The sources for a media asset
- *
- * @return {Object|boolean}
- * Object of source and tech order or false
- */
- selectSource(sources) {
- // Get only the techs specified in `techOrder` that exist and are supported by the
- // current platform
- const techs = this.options_.techOrder.map(techName => {
- return [techName, Tech.getTech(techName)];
- }).filter(([techName, tech]) => {
- // Check if the current tech is defined before continuing
- if (tech) {
- // Check if the browser supports this technology
- return tech.isSupported();
- }
- log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
- return false;
- });
-
- // Iterate over each `innerArray` element once per `outerArray` element and execute
- // `tester` with both. If `tester` returns a non-falsy value, exit early and return
- // that value.
- const findFirstPassingTechSourcePair = function (outerArray, innerArray, tester) {
- let found;
- outerArray.some(outerChoice => {
- return innerArray.some(innerChoice => {
- found = tester(outerChoice, innerChoice);
- if (found) {
- return true;
- }
- });
- });
- return found;
- };
- let foundSourceAndTech;
- const flip = fn => (a, b) => fn(b, a);
- const finder = ([techName, tech], source) => {
- if (tech.canPlaySource(source, this.options_[techName.toLowerCase()])) {
- return {
- source,
- tech: techName
- };
- }
- };
-
- // Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources
- // to select from them based on their priority.
- if (this.options_.sourceOrder) {
- // Source-first ordering
- foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));
- } else {
- // Tech-first ordering
- foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);
- }
- return foundSourceAndTech || false;
- }
-
- /**
- * Executes source setting and getting logic
- *
- * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
- * A SourceObject, an array of SourceObjects, or a string referencing
- * a URL to a media source. It is _highly recommended_ that an object
- * or array of objects is used here, so that source selection
- * algorithms can take the `type` into account.
- *
- * If not provided, this method acts as a getter.
- * @param {boolean} [isRetry]
- * Indicates whether this is being called internally as a result of a retry
- *
- * @return {string|undefined}
- * If the `source` argument is missing, returns the current source
- * URL. Otherwise, returns nothing/undefined.
- */
- handleSrc_(source, isRetry) {
- // getter usage
- if (typeof source === 'undefined') {
- return this.cache_.src || '';
- }
-
- // Reset retry behavior for new source
- if (this.resetRetryOnError_) {
- this.resetRetryOnError_();
- }
-
- // filter out invalid sources and turn our source into
- // an array of source objects
- const sources = filterSource(source);
-
- // if a source was passed in then it is invalid because
- // it was filtered to a zero length Array. So we have to
- // show an error
- if (!sources.length) {
- this.setTimeout(function () {
- this.error({
- code: 4,
- message: this.options_.notSupportedMessage
- });
- }, 0);
- return;
- }
-
- // initial sources
- this.changingSrc_ = true;
-
- // Only update the cached source list if we are not retrying a new source after error,
- // since in that case we want to include the failed source(s) in the cache
- if (!isRetry) {
- this.cache_.sources = sources;
- }
- this.updateSourceCaches_(sources[0]);
-
- // middlewareSource is the source after it has been changed by middleware
- setSource(this, sources[0], (middlewareSource, mws) => {
- this.middleware_ = mws;
-
- // since sourceSet is async we have to update the cache again after we select a source since
- // the source that is selected could be out of order from the cache update above this callback.
- if (!isRetry) {
- this.cache_.sources = sources;
- }
- this.updateSourceCaches_(middlewareSource);
- const err = this.src_(middlewareSource);
- if (err) {
- if (sources.length > 1) {
- return this.handleSrc_(sources.slice(1));
- }
- this.changingSrc_ = false;
-
- // We need to wrap this in a timeout to give folks a chance to add error event handlers
- this.setTimeout(function () {
- this.error({
- code: 4,
- message: this.options_.notSupportedMessage
- });
- }, 0);
-
- // we could not find an appropriate tech, but let's still notify the delegate that this is it
- // this needs a better comment about why this is needed
- this.triggerReady();
- return;
- }
- setTech(mws, this.tech_);
- });
-
- // Try another available source if this one fails before playback.
- if (sources.length > 1) {
- const retry = () => {
- // Remove the error modal
- this.error(null);
- this.handleSrc_(sources.slice(1), true);
- };
- const stopListeningForErrors = () => {
- this.off('error', retry);
- };
- this.one('error', retry);
- this.one('playing', stopListeningForErrors);
- this.resetRetryOnError_ = () => {
- this.off('error', retry);
- this.off('playing', stopListeningForErrors);
- };
- }
- }
-
- /**
- * Get or set the video source.
- *
- * @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
- * A SourceObject, an array of SourceObjects, or a string referencing
- * a URL to a media source. It is _highly recommended_ that an object
- * or array of objects is used here, so that source selection
- * algorithms can take the `type` into account.
- *
- * If not provided, this method acts as a getter.
- *
- * @return {string|undefined}
- * If the `source` argument is missing, returns the current source
- * URL. Otherwise, returns nothing/undefined.
- */
- src(source) {
- return this.handleSrc_(source, false);
- }
-
- /**
- * Set the source object on the tech, returns a boolean that indicates whether
- * there is a tech that can play the source or not
- *
- * @param {Tech~SourceObject} source
- * The source object to set on the Tech
- *
- * @return {boolean}
- * - True if there is no Tech to playback this source
- * - False otherwise
- *
- * @private
- */
- src_(source) {
- const sourceTech = this.selectSource([source]);
- if (!sourceTech) {
- return true;
- }
- if (!titleCaseEquals(sourceTech.tech, this.techName_)) {
- this.changingSrc_ = true;
- // load this technology with the chosen source
- this.loadTech_(sourceTech.tech, sourceTech.source);
- this.tech_.ready(() => {
- this.changingSrc_ = false;
- });
- return false;
- }
-
- // wait until the tech is ready to set the source
- // and set it synchronously if possible (#2326)
- this.ready(function () {
- // The setSource tech method was added with source handlers
- // so older techs won't support it
- // We need to check the direct prototype for the case where subclasses
- // of the tech do not support source handlers
- if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {
- this.techCall_('setSource', source);
- } else {
- this.techCall_('src', source.src);
- }
- this.changingSrc_ = false;
- }, true);
- return false;
- }
-
- /**
- * Begin loading the src data.
- */
- load() {
- // Workaround to use the load method with the VHS.
- // Does not cover the case when the load method is called directly from the mediaElement.
- if (this.tech_ && this.tech_.vhs) {
- this.src(this.currentSource());
- return;
- }
- this.techCall_('load');
- }
-
- /**
- * Reset the player. Loads the first tech in the techOrder,
- * removes all the text tracks in the existing `tech`,
- * and calls `reset` on the `tech`.
- */
- reset() {
- if (this.paused()) {
- this.doReset_();
- } else {
- const playPromise = this.play();
- silencePromise(playPromise.then(() => this.doReset_()));
- }
- }
- doReset_() {
- if (this.tech_) {
- this.tech_.clearTracks('text');
- }
- this.removeClass('vjs-playing');
- this.addClass('vjs-paused');
- this.resetCache_();
- this.poster('');
- this.loadTech_(this.options_.techOrder[0], null);
- this.techCall_('reset');
- this.resetControlBarUI_();
- this.error(null);
- if (this.titleBar) {
- this.titleBar.update({
- title: undefined,
- description: undefined
- });
- }
- if (isEvented(this)) {
- this.trigger('playerreset');
- }
- }
-
- /**
- * Reset Control Bar's UI by calling sub-methods that reset
- * all of Control Bar's components
- */
- resetControlBarUI_() {
- this.resetProgressBar_();
- this.resetPlaybackRate_();
- this.resetVolumeBar_();
- }
-
- /**
- * Reset tech's progress so progress bar is reset in the UI
- */
- resetProgressBar_() {
- this.currentTime(0);
- const {
- currentTimeDisplay,
- durationDisplay,
- progressControl,
- remainingTimeDisplay
- } = this.controlBar || {};
- const {
- seekBar
- } = progressControl || {};
- if (currentTimeDisplay) {
- currentTimeDisplay.updateContent();
- }
- if (durationDisplay) {
- durationDisplay.updateContent();
- }
- if (remainingTimeDisplay) {
- remainingTimeDisplay.updateContent();
- }
- if (seekBar) {
- seekBar.update();
- if (seekBar.loadProgressBar) {
- seekBar.loadProgressBar.update();
- }
- }
- }
-
- /**
- * Reset Playback ratio
- */
- resetPlaybackRate_() {
- this.playbackRate(this.defaultPlaybackRate());
- this.handleTechRateChange_();
- }
-
- /**
- * Reset Volume bar
- */
- resetVolumeBar_() {
- this.volume(1.0);
- this.trigger('volumechange');
- }
-
- /**
- * Returns all of the current source objects.
- *
- * @return {Tech~SourceObject[]}
- * The current source objects
- */
- currentSources() {
- const source = this.currentSource();
- const sources = [];
-
- // assume `{}` or `{ src }`
- if (Object.keys(source).length !== 0) {
- sources.push(source);
- }
- return this.cache_.sources || sources;
- }
-
- /**
- * Returns the current source object.
- *
- * @return {Tech~SourceObject}
- * The current source object
- */
- currentSource() {
- return this.cache_.source || {};
- }
-
- /**
- * Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4
- * Can be used in conjunction with `currentType` to assist in rebuilding the current source object.
- *
- * @return {string}
- * The current source
- */
- currentSrc() {
- return this.currentSource() && this.currentSource().src || '';
- }
-
- /**
- * Get the current source type e.g. video/mp4
- * This can allow you rebuild the current source object so that you could load the same
- * source and tech later
- *
- * @return {string}
- * The source MIME type
- */
- currentType() {
- return this.currentSource() && this.currentSource().type || '';
- }
-
- /**
- * Get or set the preload attribute
- *
- * @param {'none'|'auto'|'metadata'} [value]
- * Preload mode to pass to tech
- *
- * @return {string|undefined}
- * - The preload attribute value when getting
- * - Nothing when setting
- */
- preload(value) {
- if (value !== undefined) {
- this.techCall_('setPreload', value);
- this.options_.preload = value;
- return;
- }
- return this.techGet_('preload');
- }
-
- /**
- * Get or set the autoplay option. When this is a boolean it will
- * modify the attribute on the tech. When this is a string the attribute on
- * the tech will be removed and `Player` will handle autoplay on loadstarts.
- *
- * @param {boolean|'play'|'muted'|'any'} [value]
- * - true: autoplay using the browser behavior
- * - false: do not autoplay
- * - 'play': call play() on every loadstart
- * - 'muted': call muted() then play() on every loadstart
- * - 'any': call play() on every loadstart. if that fails call muted() then play().
- * - *: values other than those listed here will be set `autoplay` to true
- *
- * @return {boolean|string|undefined}
- * - The current value of autoplay when getting
- * - Nothing when setting
- */
- autoplay(value) {
- // getter usage
- if (value === undefined) {
- return this.options_.autoplay || false;
- }
- let techAutoplay;
-
- // if the value is a valid string set it to that, or normalize `true` to 'play', if need be
- if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {
- this.options_.autoplay = value;
- this.manualAutoplay_(typeof value === 'string' ? value : 'play');
- techAutoplay = false;
-
- // any falsy value sets autoplay to false in the browser,
- // lets do the same
- } else if (!value) {
- this.options_.autoplay = false;
-
- // any other value (ie truthy) sets autoplay to true
- } else {
- this.options_.autoplay = true;
- }
- techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay;
-
- // if we don't have a tech then we do not queue up
- // a setAutoplay call on tech ready. We do this because the
- // autoplay option will be passed in the constructor and we
- // do not need to set it twice
- if (this.tech_) {
- this.techCall_('setAutoplay', techAutoplay);
- }
- }
-
- /**
- * Set or unset the playsinline attribute.
- * Playsinline tells the browser that non-fullscreen playback is preferred.
- *
- * @param {boolean} [value]
- * - true means that we should try to play inline by default
- * - false means that we should use the browser's default playback mode,
- * which in most cases is inline. iOS Safari is a notable exception
- * and plays fullscreen by default.
- *
- * @return {string|undefined}
- * - the current value of playsinline
- * - Nothing when setting
- *
- * @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
- */
- playsinline(value) {
- if (value !== undefined) {
- this.techCall_('setPlaysinline', value);
- this.options_.playsinline = value;
- }
- return this.techGet_('playsinline');
- }
-
- /**
- * Get or set the loop attribute on the video element.
- *
- * @param {boolean} [value]
- * - true means that we should loop the video
- * - false means that we should not loop the video
- *
- * @return {boolean|undefined}
- * - The current value of loop when getting
- * - Nothing when setting
- */
- loop(value) {
- if (value !== undefined) {
- this.techCall_('setLoop', value);
- this.options_.loop = value;
- return;
- }
- return this.techGet_('loop');
- }
-
- /**
- * Get or set the poster image source url
- *
- * @fires Player#posterchange
- *
- * @param {string} [src]
- * Poster image source URL
- *
- * @return {string|undefined}
- * - The current value of poster when getting
- * - Nothing when setting
- */
- poster(src) {
- if (src === undefined) {
- return this.poster_;
- }
-
- // The correct way to remove a poster is to set as an empty string
- // other falsey values will throw errors
- if (!src) {
- src = '';
- }
- if (src === this.poster_) {
- return;
- }
-
- // update the internal poster variable
- this.poster_ = src;
-
- // update the tech's poster
- this.techCall_('setPoster', src);
- this.isPosterFromTech_ = false;
-
- // alert components that the poster has been set
- /**
- * This event fires when the poster image is changed on the player.
- *
- * @event Player#posterchange
- * @type {Event}
- */
- this.trigger('posterchange');
- }
-
- /**
- * Some techs (e.g. YouTube) can provide a poster source in an
- * asynchronous way. We want the poster component to use this
- * poster source so that it covers up the tech's controls.
- * (YouTube's play button). However we only want to use this
- * source if the player user hasn't set a poster through
- * the normal APIs.
- *
- * @fires Player#posterchange
- * @listens Tech#posterchange
- * @private
- */
- handleTechPosterChange_() {
- if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {
- const newPoster = this.tech_.poster() || '';
- if (newPoster !== this.poster_) {
- this.poster_ = newPoster;
- this.isPosterFromTech_ = true;
-
- // Let components know the poster has changed
- this.trigger('posterchange');
- }
- }
- }
-
- /**
- * Get or set whether or not the controls are showing.
- *
- * @fires Player#controlsenabled
- *
- * @param {boolean} [bool]
- * - true to turn controls on
- * - false to turn controls off
- *
- * @return {boolean|undefined}
- * - The current value of controls when getting
- * - Nothing when setting
- */
- controls(bool) {
- if (bool === undefined) {
- return !!this.controls_;
- }
- bool = !!bool;
-
- // Don't trigger a change event unless it actually changed
- if (this.controls_ === bool) {
- return;
- }
- this.controls_ = bool;
- if (this.usingNativeControls()) {
- this.techCall_('setControls', bool);
- }
- if (this.controls_) {
- this.removeClass('vjs-controls-disabled');
- this.addClass('vjs-controls-enabled');
- /**
- * @event Player#controlsenabled
- * @type {Event}
- */
- this.trigger('controlsenabled');
- if (!this.usingNativeControls()) {
- this.addTechControlsListeners_();
- }
- } else {
- this.removeClass('vjs-controls-enabled');
- this.addClass('vjs-controls-disabled');
- /**
- * @event Player#controlsdisabled
- * @type {Event}
- */
- this.trigger('controlsdisabled');
- if (!this.usingNativeControls()) {
- this.removeTechControlsListeners_();
- }
- }
- }
-
- /**
- * Toggle native controls on/off. Native controls are the controls built into
- * devices (e.g. default iPhone controls) or other techs
- * (e.g. Vimeo Controls)
- * **This should only be set by the current tech, because only the tech knows
- * if it can support native controls**
- *
- * @fires Player#usingnativecontrols
- * @fires Player#usingcustomcontrols
- *
- * @param {boolean} [bool]
- * - true to turn native controls on
- * - false to turn native controls off
- *
- * @return {boolean|undefined}
- * - The current value of native controls when getting
- * - Nothing when setting
- */
- usingNativeControls(bool) {
- if (bool === undefined) {
- return !!this.usingNativeControls_;
- }
- bool = !!bool;
-
- // Don't trigger a change event unless it actually changed
- if (this.usingNativeControls_ === bool) {
- return;
- }
- this.usingNativeControls_ = bool;
- if (this.usingNativeControls_) {
- this.addClass('vjs-using-native-controls');
-
- /**
- * player is using the native device controls
- *
- * @event Player#usingnativecontrols
- * @type {Event}
- */
- this.trigger('usingnativecontrols');
- } else {
- this.removeClass('vjs-using-native-controls');
-
- /**
- * player is using the custom HTML controls
- *
- * @event Player#usingcustomcontrols
- * @type {Event}
- */
- this.trigger('usingcustomcontrols');
- }
- }
-
- /**
- * Set or get the current MediaError
- *
- * @fires Player#error
- *
- * @param {MediaError|string|number} [err]
- * A MediaError or a string/number to be turned
- * into a MediaError
- *
- * @return {MediaError|null|undefined}
- * - The current MediaError when getting (or null)
- * - Nothing when setting
- */
- error(err) {
- if (err === undefined) {
- return this.error_ || null;
- }
-
- // allow hooks to modify error object
- hooks('beforeerror').forEach(hookFunction => {
- const newErr = hookFunction(this, err);
- if (!(isObject$1(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {
- this.log.error('please return a value that MediaError expects in beforeerror hooks');
- return;
- }
- err = newErr;
- });
-
- // Suppress the first error message for no compatible source until
- // user interaction
- if (this.options_.suppressNotSupportedError && err && err.code === 4) {
- const triggerSuppressedError = function () {
- this.error(err);
- };
- this.options_.suppressNotSupportedError = false;
- this.any(['click', 'touchstart'], triggerSuppressedError);
- this.one('loadstart', function () {
- this.off(['click', 'touchstart'], triggerSuppressedError);
- });
- return;
- }
-
- // restoring to default
- if (err === null) {
- this.error_ = null;
- this.removeClass('vjs-error');
- if (this.errorDisplay) {
- this.errorDisplay.close();
- }
- return;
- }
- this.error_ = new MediaError(err);
-
- // add the vjs-error classname to the player
- this.addClass('vjs-error');
-
- // log the name of the error type and any message
- // IE11 logs "[object object]" and required you to expand message to see error object
- log$1.error(`(CODE:${this.error_.code} ${MediaError.errorTypes[this.error_.code]})`, this.error_.message, this.error_);
-
- /**
- * @event Player#error
- * @type {Event}
- */
- this.trigger('error');
-
- // notify hooks of the per player error
- hooks('error').forEach(hookFunction => hookFunction(this, this.error_));
- return;
- }
-
- /**
- * Report user activity
- *
- * @param {Object} event
- * Event object
- */
- reportUserActivity(event) {
- this.userActivity_ = true;
- }
-
- /**
- * Get/set if user is active
- *
- * @fires Player#useractive
- * @fires Player#userinactive
- *
- * @param {boolean} [bool]
- * - true if the user is active
- * - false if the user is inactive
- *
- * @return {boolean|undefined}
- * - The current value of userActive when getting
- * - Nothing when setting
- */
- userActive(bool) {
- if (bool === undefined) {
- return this.userActive_;
- }
- bool = !!bool;
- if (bool === this.userActive_) {
- return;
- }
- this.userActive_ = bool;
- if (this.userActive_) {
- this.userActivity_ = true;
- this.removeClass('vjs-user-inactive');
- this.addClass('vjs-user-active');
- /**
- * @event Player#useractive
- * @type {Event}
- */
- this.trigger('useractive');
- return;
- }
-
- // Chrome/Safari/IE have bugs where when you change the cursor it can
- // trigger a mousemove event. This causes an issue when you're hiding
- // the cursor when the user is inactive, and a mousemove signals user
- // activity. Making it impossible to go into inactive mode. Specifically
- // this happens in fullscreen when we really need to hide the cursor.
- //
- // When this gets resolved in ALL browsers it can be removed
- // https://code.google.com/p/chromium/issues/detail?id=103041
- if (this.tech_) {
- this.tech_.one('mousemove', function (e) {
- e.stopPropagation();
- e.preventDefault();
- });
- }
- this.userActivity_ = false;
- this.removeClass('vjs-user-active');
- this.addClass('vjs-user-inactive');
- /**
- * @event Player#userinactive
- * @type {Event}
- */
- this.trigger('userinactive');
- }
-
- /**
- * Listen for user activity based on timeout value
- *
- * @private
- */
- listenForUserActivity_() {
- let mouseInProgress;
- let lastMoveX;
- let lastMoveY;
- const handleActivity = bind_(this, this.reportUserActivity);
- const handleMouseMove = function (e) {
- // #1068 - Prevent mousemove spamming
- // Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970
- if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {
- lastMoveX = e.screenX;
- lastMoveY = e.screenY;
- handleActivity();
- }
- };
- const handleMouseDown = function () {
- handleActivity();
- // For as long as the they are touching the device or have their mouse down,
- // we consider them active even if they're not moving their finger or mouse.
- // So we want to continue to update that they are active
- this.clearInterval(mouseInProgress);
- // Setting userActivity=true now and setting the interval to the same time
- // as the activityCheck interval (250) should ensure we never miss the
- // next activityCheck
- mouseInProgress = this.setInterval(handleActivity, 250);
- };
- const handleMouseUpAndMouseLeave = function (event) {
- handleActivity();
- // Stop the interval that maintains activity if the mouse/touch is down
- this.clearInterval(mouseInProgress);
- };
-
- // Any mouse movement will be considered user activity
- this.on('mousedown', handleMouseDown);
- this.on('mousemove', handleMouseMove);
- this.on('mouseup', handleMouseUpAndMouseLeave);
- this.on('mouseleave', handleMouseUpAndMouseLeave);
- const controlBar = this.getChild('controlBar');
-
- // Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)
- // controlBar would no longer be hidden by default timeout.
- if (controlBar && !IS_IOS && !IS_ANDROID) {
- controlBar.on('mouseenter', function (event) {
- if (this.player().options_.inactivityTimeout !== 0) {
- this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;
- }
- this.player().options_.inactivityTimeout = 0;
- });
- controlBar.on('mouseleave', function (event) {
- this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;
- });
- }
-
- // Listen for keyboard navigation
- // Shouldn't need to use inProgress interval because of key repeat
- this.on('keydown', handleActivity);
- this.on('keyup', handleActivity);
-
- // Run an interval every 250 milliseconds instead of stuffing everything into
- // the mousemove/touchmove function itself, to prevent performance degradation.
- // `this.reportUserActivity` simply sets this.userActivity_ to true, which
- // then gets picked up by this loop
- // http://ejohn.org/blog/learning-from-twitter/
- let inactivityTimeout;
-
- /** @this Player */
- const activityCheck = function () {
- // Check to see if mouse/touch activity has happened
- if (!this.userActivity_) {
- return;
- }
-
- // Reset the activity tracker
- this.userActivity_ = false;
-
- // If the user state was inactive, set the state to active
- this.userActive(true);
-
- // Clear any existing inactivity timeout to start the timer over
- this.clearTimeout(inactivityTimeout);
- const timeout = this.options_.inactivityTimeout;
- if (timeout <= 0) {
- return;
- }
-
- // In <timeout> milliseconds, if no more activity has occurred the
- // user will be considered inactive
- inactivityTimeout = this.setTimeout(function () {
- // Protect against the case where the inactivityTimeout can trigger just
- // before the next user activity is picked up by the activity check loop
- // causing a flicker
- if (!this.userActivity_) {
- this.userActive(false);
- }
- }, timeout);
- };
- this.setInterval(activityCheck, 250);
- }
-
- /**
- * Gets or sets the current playback rate. A playback rate of
- * 1.0 represents normal speed and 0.5 would indicate half-speed
- * playback, for instance.
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate
- *
- * @param {number} [rate]
- * New playback rate to set.
- *
- * @return {number|undefined}
- * - The current playback rate when getting or 1.0
- * - Nothing when setting
- */
- playbackRate(rate) {
- if (rate !== undefined) {
- // NOTE: this.cache_.lastPlaybackRate is set from the tech handler
- // that is registered above
- this.techCall_('setPlaybackRate', rate);
- return;
- }
- if (this.tech_ && this.tech_.featuresPlaybackRate) {
- return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');
- }
- return 1.0;
- }
-
- /**
- * Gets or sets the current default playback rate. A default playback rate of
- * 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.
- * defaultPlaybackRate will only represent what the initial playbackRate of a video was, not
- * not the current playbackRate.
- *
- * @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate
- *
- * @param {number} [rate]
- * New default playback rate to set.
- *
- * @return {number|undefined}
- * - The default playback rate when getting or 1.0
- * - Nothing when setting
- */
- defaultPlaybackRate(rate) {
- if (rate !== undefined) {
- return this.techCall_('setDefaultPlaybackRate', rate);
- }
- if (this.tech_ && this.tech_.featuresPlaybackRate) {
- return this.techGet_('defaultPlaybackRate');
- }
- return 1.0;
- }
-
- /**
- * Gets or sets the audio flag
- *
- * @param {boolean} [bool]
- * - true signals that this is an audio player
- * - false signals that this is not an audio player
- *
- * @return {boolean|undefined}
- * - The current value of isAudio when getting
- * - Nothing when setting
- */
- isAudio(bool) {
- if (bool !== undefined) {
- this.isAudio_ = !!bool;
- return;
- }
- return !!this.isAudio_;
- }
- enableAudioOnlyUI_() {
- // Update styling immediately to show the control bar so we can get its height
- this.addClass('vjs-audio-only-mode');
- const playerChildren = this.children();
- const controlBar = this.getChild('ControlBar');
- const controlBarHeight = controlBar && controlBar.currentHeight();
-
- // Hide all player components except the control bar. Control bar components
- // needed only for video are hidden with CSS
- playerChildren.forEach(child => {
- if (child === controlBar) {
- return;
- }
- if (child.el_ && !child.hasClass('vjs-hidden')) {
- child.hide();
- this.audioOnlyCache_.hiddenChildren.push(child);
- }
- });
- this.audioOnlyCache_.playerHeight = this.currentHeight();
-
- // Set the player height the same as the control bar
- this.height(controlBarHeight);
- this.trigger('audioonlymodechange');
- }
- disableAudioOnlyUI_() {
- this.removeClass('vjs-audio-only-mode');
-
- // Show player components that were previously hidden
- this.audioOnlyCache_.hiddenChildren.forEach(child => child.show());
-
- // Reset player height
- this.height(this.audioOnlyCache_.playerHeight);
- this.trigger('audioonlymodechange');
- }
-
- /**
- * Get the current audioOnlyMode state or set audioOnlyMode to true or false.
- *
- * Setting this to `true` will hide all player components except the control bar,
- * as well as control bar components needed only for video.
- *
- * @param {boolean} [value]
- * The value to set audioOnlyMode to.
- *
- * @return {Promise|boolean}
- * A Promise is returned when setting the state, and a boolean when getting
- * the present state
- */
- audioOnlyMode(value) {
- if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {
- return this.audioOnlyMode_;
- }
- this.audioOnlyMode_ = value;
-
- // Enable Audio Only Mode
- if (value) {
- const exitPromises = [];
-
- // Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.
- if (this.isInPictureInPicture()) {
- exitPromises.push(this.exitPictureInPicture());
- }
- if (this.isFullscreen()) {
- exitPromises.push(this.exitFullscreen());
- }
- if (this.audioPosterMode()) {
- exitPromises.push(this.audioPosterMode(false));
- }
- return Promise.all(exitPromises).then(() => this.enableAudioOnlyUI_());
- }
-
- // Disable Audio Only Mode
- return Promise.resolve().then(() => this.disableAudioOnlyUI_());
- }
- enablePosterModeUI_() {
- // Hide the video element and show the poster image to enable posterModeUI
- const tech = this.tech_ && this.tech_;
- tech.hide();
- this.addClass('vjs-audio-poster-mode');
- this.trigger('audiopostermodechange');
- }
- disablePosterModeUI_() {
- // Show the video element and hide the poster image to disable posterModeUI
- const tech = this.tech_ && this.tech_;
- tech.show();
- this.removeClass('vjs-audio-poster-mode');
- this.trigger('audiopostermodechange');
- }
-
- /**
- * Get the current audioPosterMode state or set audioPosterMode to true or false
- *
- * @param {boolean} [value]
- * The value to set audioPosterMode to.
- *
- * @return {Promise|boolean}
- * A Promise is returned when setting the state, and a boolean when getting
- * the present state
- */
- audioPosterMode(value) {
- if (typeof value !== 'boolean' || value === this.audioPosterMode_) {
- return this.audioPosterMode_;
- }
- this.audioPosterMode_ = value;
- if (value) {
- if (this.audioOnlyMode()) {
- const audioOnlyModePromise = this.audioOnlyMode(false);
- return audioOnlyModePromise.then(() => {
- // enable audio poster mode after audio only mode is disabled
- this.enablePosterModeUI_();
- });
- }
- return Promise.resolve().then(() => {
- // enable audio poster mode
- this.enablePosterModeUI_();
- });
- }
- return Promise.resolve().then(() => {
- // disable audio poster mode
- this.disablePosterModeUI_();
- });
- }
-
- /**
- * A helper method for adding a {@link TextTrack} to our
- * {@link TextTrackList}.
- *
- * In addition to the W3C settings we allow adding additional info through options.
- *
- * @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack
- *
- * @param {string} [kind]
- * the kind of TextTrack you are adding
- *
- * @param {string} [label]
- * the label to give the TextTrack label
- *
- * @param {string} [language]
- * the language to set on the TextTrack
- *
- * @return {TextTrack|undefined}
- * the TextTrack that was added or undefined
- * if there is no tech
- */
- addTextTrack(kind, label, language) {
- if (this.tech_) {
- return this.tech_.addTextTrack(kind, label, language);
- }
- }
-
- /**
- * Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.
- *
- * @param {Object} options
- * Options to pass to {@link HTMLTrackElement} during creation. See
- * {@link HTMLTrackElement} for object properties that you should use.
- *
- * @param {boolean} [manualCleanup=false] if set to true, the TextTrack will not be removed
- * from the TextTrackList and HtmlTrackElementList
- * after a source change
- *
- * @return { import('./tracks/html-track-element').default }
- * the HTMLTrackElement that was created and added
- * to the HtmlTrackElementList and the remote
- * TextTrackList
- *
- */
- addRemoteTextTrack(options, manualCleanup) {
- if (this.tech_) {
- return this.tech_.addRemoteTextTrack(options, manualCleanup);
- }
- }
-
- /**
- * Remove a remote {@link TextTrack} from the respective
- * {@link TextTrackList} and {@link HtmlTrackElementList}.
- *
- * @param {Object} track
- * Remote {@link TextTrack} to remove
- *
- * @return {undefined}
- * does not return anything
- */
- removeRemoteTextTrack(obj = {}) {
- let {
- track
- } = obj;
- if (!track) {
- track = obj;
- }
-
- // destructure the input into an object with a track argument, defaulting to arguments[0]
- // default the whole argument to an empty object if nothing was passed in
-
- if (this.tech_) {
- return this.tech_.removeRemoteTextTrack(track);
- }
- }
-
- /**
- * Gets available media playback quality metrics as specified by the W3C's Media
- * Playback Quality API.
- *
- * @see [Spec]{@link https://wicg.github.io/media-playback-quality}
- *
- * @return {Object|undefined}
- * An object with supported media playback quality metrics or undefined if there
- * is no tech or the tech does not support it.
- */
- getVideoPlaybackQuality() {
- return this.techGet_('getVideoPlaybackQuality');
- }
-
- /**
- * Get video width
- *
- * @return {number}
- * current video width
- */
- videoWidth() {
- return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;
- }
-
- /**
- * Get video height
- *
- * @return {number}
- * current video height
- */
- videoHeight() {
- return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;
- }
-
- /**
- * Set or get the player's language code.
- *
- * Changing the language will trigger
- * [languagechange]{@link Player#event:languagechange}
- * which Components can use to update control text.
- * ClickableComponent will update its control text by default on
- * [languagechange]{@link Player#event:languagechange}.
- *
- * @fires Player#languagechange
- *
- * @param {string} [code]
- * the language code to set the player to
- *
- * @return {string|undefined}
- * - The current language code when getting
- * - Nothing when setting
- */
- language(code) {
- if (code === undefined) {
- return this.language_;
- }
- if (this.language_ !== String(code).toLowerCase()) {
- this.language_ = String(code).toLowerCase();
-
- // during first init, it's possible some things won't be evented
- if (isEvented(this)) {
- /**
- * fires when the player language change
- *
- * @event Player#languagechange
- * @type {Event}
- */
- this.trigger('languagechange');
- }
- }
- }
-
- /**
- * Get the player's language dictionary
- * Merge every time, because a newly added plugin might call videojs.addLanguage() at any time
- * Languages specified directly in the player options have precedence
- *
- * @return {Array}
- * An array of of supported languages
- */
- languages() {
- return merge$2(Player.prototype.options_.languages, this.languages_);
- }
-
- /**
- * returns a JavaScript object representing the current track
- * information. **DOES not return it as JSON**
- *
- * @return {Object}
- * Object representing the current of track info
- */
- toJSON() {
- const options = merge$2(this.options_);
- const tracks = options.tracks;
- options.tracks = [];
- for (let i = 0; i < tracks.length; i++) {
- let track = tracks[i];
-
- // deep merge tracks and null out player so no circular references
- track = merge$2(track);
- track.player = undefined;
- options.tracks[i] = track;
- }
- return options;
- }
-
- /**
- * Creates a simple modal dialog (an instance of the {@link ModalDialog}
- * component) that immediately overlays the player with arbitrary
- * content and removes itself when closed.
- *
- * @param {string|Function|Element|Array|null} content
- * Same as {@link ModalDialog#content}'s param of the same name.
- * The most straight-forward usage is to provide a string or DOM
- * element.
- *
- * @param {Object} [options]
- * Extra options which will be passed on to the {@link ModalDialog}.
- *
- * @return {ModalDialog}
- * the {@link ModalDialog} that was created
- */
- createModal(content, options) {
- options = options || {};
- options.content = content || '';
- const modal = new ModalDialog(this, options);
- this.addChild(modal);
- modal.on('dispose', () => {
- this.removeChild(modal);
- });
- modal.open();
- return modal;
- }
-
- /**
- * Change breakpoint classes when the player resizes.
- *
- * @private
- */
- updateCurrentBreakpoint_() {
- if (!this.responsive()) {
- return;
- }
- const currentBreakpoint = this.currentBreakpoint();
- const currentWidth = this.currentWidth();
- for (let i = 0; i < BREAKPOINT_ORDER.length; i++) {
- const candidateBreakpoint = BREAKPOINT_ORDER[i];
- const maxWidth = this.breakpoints_[candidateBreakpoint];
- if (currentWidth <= maxWidth) {
- // The current breakpoint did not change, nothing to do.
- if (currentBreakpoint === candidateBreakpoint) {
- return;
- }
-
- // Only remove a class if there is a current breakpoint.
- if (currentBreakpoint) {
- this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);
- }
- this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);
- this.breakpoint_ = candidateBreakpoint;
- break;
- }
- }
- }
-
- /**
- * Removes the current breakpoint.
- *
- * @private
- */
- removeCurrentBreakpoint_() {
- const className = this.currentBreakpointClass();
- this.breakpoint_ = '';
- if (className) {
- this.removeClass(className);
- }
- }
-
- /**
- * Get or set breakpoints on the player.
- *
- * Calling this method with an object or `true` will remove any previous
- * custom breakpoints and start from the defaults again.
- *
- * @param {Object|boolean} [breakpoints]
- * If an object is given, it can be used to provide custom
- * breakpoints. If `true` is given, will set default breakpoints.
- * If this argument is not given, will simply return the current
- * breakpoints.
- *
- * @param {number} [breakpoints.tiny]
- * The maximum width for the "vjs-layout-tiny" class.
- *
- * @param {number} [breakpoints.xsmall]
- * The maximum width for the "vjs-layout-x-small" class.
- *
- * @param {number} [breakpoints.small]
- * The maximum width for the "vjs-layout-small" class.
- *
- * @param {number} [breakpoints.medium]
- * The maximum width for the "vjs-layout-medium" class.
- *
- * @param {number} [breakpoints.large]
- * The maximum width for the "vjs-layout-large" class.
- *
- * @param {number} [breakpoints.xlarge]
- * The maximum width for the "vjs-layout-x-large" class.
- *
- * @param {number} [breakpoints.huge]
- * The maximum width for the "vjs-layout-huge" class.
- *
- * @return {Object}
- * An object mapping breakpoint names to maximum width values.
- */
- breakpoints(breakpoints) {
- // Used as a getter.
- if (breakpoints === undefined) {
- return Object.assign(this.breakpoints_);
- }
- this.breakpoint_ = '';
- this.breakpoints_ = Object.assign({}, DEFAULT_BREAKPOINTS, breakpoints);
-
- // When breakpoint definitions change, we need to update the currently
- // selected breakpoint.
- this.updateCurrentBreakpoint_();
-
- // Clone the breakpoints before returning.
- return Object.assign(this.breakpoints_);
- }
-
- /**
- * Get or set a flag indicating whether or not this player should adjust
- * its UI based on its dimensions.
- *
- * @param {boolean} [value]
- * Should be `true` if the player should adjust its UI based on its
- * dimensions; otherwise, should be `false`.
- *
- * @return {boolean|undefined}
- * Will be `true` if this player should adjust its UI based on its
- * dimensions; otherwise, will be `false`.
- * Nothing if setting
- */
- responsive(value) {
- // Used as a getter.
- if (value === undefined) {
- return this.responsive_;
- }
- value = Boolean(value);
- const current = this.responsive_;
-
- // Nothing changed.
- if (value === current) {
- return;
- }
-
- // The value actually changed, set it.
- this.responsive_ = value;
-
- // Start listening for breakpoints and set the initial breakpoint if the
- // player is now responsive.
- if (value) {
- this.on('playerresize', this.boundUpdateCurrentBreakpoint_);
- this.updateCurrentBreakpoint_();
-
- // Stop listening for breakpoints if the player is no longer responsive.
- } else {
- this.off('playerresize', this.boundUpdateCurrentBreakpoint_);
- this.removeCurrentBreakpoint_();
- }
- return value;
- }
-
- /**
- * Get current breakpoint name, if any.
- *
- * @return {string}
- * If there is currently a breakpoint set, returns a the key from the
- * breakpoints object matching it. Otherwise, returns an empty string.
- */
- currentBreakpoint() {
- return this.breakpoint_;
- }
-
- /**
- * Get the current breakpoint class name.
- *
- * @return {string}
- * The matching class name (e.g. `"vjs-layout-tiny"` or
- * `"vjs-layout-large"`) for the current breakpoint. Empty string if
- * there is no current breakpoint.
- */
- currentBreakpointClass() {
- return BREAKPOINT_CLASSES[this.breakpoint_] || '';
- }
-
- /**
- * An object that describes a single piece of media.
- *
- * Properties that are not part of this type description will be retained; so,
- * this can be viewed as a generic metadata storage mechanism as well.
- *
- * @see {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}
- * @typedef {Object} Player~MediaObject
- *
- * @property {string} [album]
- * Unused, except if this object is passed to the `MediaSession`
- * API.
- *
- * @property {string} [artist]
- * Unused, except if this object is passed to the `MediaSession`
- * API.
- *
- * @property {Object[]} [artwork]
- * Unused, except if this object is passed to the `MediaSession`
- * API. If not specified, will be populated via the `poster`, if
- * available.
- *
- * @property {string} [poster]
- * URL to an image that will display before playback.
- *
- * @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]
- * A single source object, an array of source objects, or a string
- * referencing a URL to a media source. It is _highly recommended_
- * that an object or array of objects is used here, so that source
- * selection algorithms can take the `type` into account.
- *
- * @property {string} [title]
- * Unused, except if this object is passed to the `MediaSession`
- * API.
- *
- * @property {Object[]} [textTracks]
- * An array of objects to be used to create text tracks, following
- * the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.
- * For ease of removal, these will be created as "remote" text
- * tracks and set to automatically clean up on source changes.
- *
- * These objects may have properties like `src`, `kind`, `label`,
- * and `language`, see {@link Tech#createRemoteTextTrack}.
- */
-
- /**
- * Populate the player using a {@link Player~MediaObject|MediaObject}.
- *
- * @param {Player~MediaObject} media
- * A media object.
- *
- * @param {Function} ready
- * A callback to be called when the player is ready.
- */
- loadMedia(media, ready) {
- if (!media || typeof media !== 'object') {
- return;
- }
- const crossOrigin = this.crossOrigin();
- this.reset();
-
- // Clone the media object so it cannot be mutated from outside.
- this.cache_.media = merge$2(media);
- const {
- artist,
- artwork,
- description,
- poster,
- src,
- textTracks,
- title
- } = this.cache_.media;
-
- // If `artwork` is not given, create it using `poster`.
- if (!artwork && poster) {
- this.cache_.media.artwork = [{
- src: poster,
- type: getMimetype(poster)
- }];
- }
- if (crossOrigin) {
- this.crossOrigin(crossOrigin);
- }
- if (src) {
- this.src(src);
- }
- if (poster) {
- this.poster(poster);
- }
- if (Array.isArray(textTracks)) {
- textTracks.forEach(tt => this.addRemoteTextTrack(tt, false));
- }
- if (this.titleBar) {
- this.titleBar.update({
- title,
- description: description || artist || ''
- });
- }
- this.ready(ready);
- }
-
- /**
- * Get a clone of the current {@link Player~MediaObject} for this player.
- *
- * If the `loadMedia` method has not been used, will attempt to return a
- * {@link Player~MediaObject} based on the current state of the player.
- *
- * @return {Player~MediaObject}
- */
- getMedia() {
- if (!this.cache_.media) {
- const poster = this.poster();
- const src = this.currentSources();
- const textTracks = Array.prototype.map.call(this.remoteTextTracks(), tt => ({
- kind: tt.kind,
- label: tt.label,
- language: tt.language,
- src: tt.src
- }));
- const media = {
- src,
- textTracks
- };
- if (poster) {
- media.poster = poster;
- media.artwork = [{
- src: media.poster,
- type: getMimetype(media.poster)
- }];
- }
- return media;
- }
- return merge$2(this.cache_.media);
- }
-
- /**
- * Gets tag settings
- *
- * @param {Element} tag
- * The player tag
- *
- * @return {Object}
- * An object containing all of the settings
- * for a player tag
- */
- static getTagSettings(tag) {
- const baseOptions = {
- sources: [],
- tracks: []
- };
- const tagOptions = getAttributes(tag);
- const dataSetup = tagOptions['data-setup'];
- if (hasClass(tag, 'vjs-fill')) {
- tagOptions.fill = true;
- }
- if (hasClass(tag, 'vjs-fluid')) {
- tagOptions.fluid = true;
- }
-
- // Check if data-setup attr exists.
- if (dataSetup !== null) {
- // Parse options JSON
- // If empty string, make it a parsable json object.
- const [err, data] = tuple(dataSetup || '{}');
- if (err) {
- log$1.error(err);
- }
- Object.assign(tagOptions, data);
- }
- Object.assign(baseOptions, tagOptions);
-
- // Get tag children settings
- if (tag.hasChildNodes()) {
- const children = tag.childNodes;
- for (let i = 0, j = children.length; i < j; i++) {
- const child = children[i];
- // Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/
- const childName = child.nodeName.toLowerCase();
- if (childName === 'source') {
- baseOptions.sources.push(getAttributes(child));
- } else if (childName === 'track') {
- baseOptions.tracks.push(getAttributes(child));
- }
- }
- }
- return baseOptions;
- }
-
- /**
- * Set debug mode to enable/disable logs at info level.
- *
- * @param {boolean} enabled
- * @fires Player#debugon
- * @fires Player#debugoff
- * @return {boolean|undefined}
- */
- debug(enabled) {
- if (enabled === undefined) {
- return this.debugEnabled_;
- }
- if (enabled) {
- this.trigger('debugon');
- this.previousLogLevel_ = this.log.level;
- this.log.level('debug');
- this.debugEnabled_ = true;
- } else {
- this.trigger('debugoff');
- this.log.level(this.previousLogLevel_);
- this.previousLogLevel_ = undefined;
- this.debugEnabled_ = false;
- }
- }
-
- /**
- * Set or get current playback rates.
- * Takes an array and updates the playback rates menu with the new items.
- * Pass in an empty array to hide the menu.
- * Values other than arrays are ignored.
- *
- * @fires Player#playbackrateschange
- * @param {number[]} [newRates]
- * The new rates that the playback rates menu should update to.
- * An empty array will hide the menu
- * @return {number[]} When used as a getter will return the current playback rates
- */
- playbackRates(newRates) {
- if (newRates === undefined) {
- return this.cache_.playbackRates;
- }
-
- // ignore any value that isn't an array
- if (!Array.isArray(newRates)) {
- return;
- }
-
- // ignore any arrays that don't only contain numbers
- if (!newRates.every(rate => typeof rate === 'number')) {
- return;
- }
- this.cache_.playbackRates = newRates;
-
- /**
- * fires when the playback rates in a player are changed
- *
- * @event Player#playbackrateschange
- * @type {Event}
- */
- this.trigger('playbackrateschange');
- }
- }
-
- /**
- * Get the {@link VideoTrackList}
- *
- * @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist
- *
- * @return {VideoTrackList}
- * the current video track list
- *
- * @method Player.prototype.videoTracks
- */
-
- /**
- * Get the {@link AudioTrackList}
- *
- * @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist
- *
- * @return {AudioTrackList}
- * the current audio track list
- *
- * @method Player.prototype.audioTracks
- */
-
- /**
- * Get the {@link TextTrackList}
- *
- * @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks
- *
- * @return {TextTrackList}
- * the current text track list
- *
- * @method Player.prototype.textTracks
- */
-
- /**
- * Get the remote {@link TextTrackList}
- *
- * @return {TextTrackList}
- * The current remote text track list
- *
- * @method Player.prototype.remoteTextTracks
- */
-
- /**
- * Get the remote {@link HtmlTrackElementList} tracks.
- *
- * @return {HtmlTrackElementList}
- * The current remote text track element list
- *
- * @method Player.prototype.remoteTextTrackEls
- */
-
- ALL.names.forEach(function (name) {
- const props = ALL[name];
- Player.prototype[props.getterName] = function () {
- if (this.tech_) {
- return this.tech_[props.getterName]();
- }
-
- // if we have not yet loadTech_, we create {video,audio,text}Tracks_
- // these will be passed to the tech during loading
- this[props.privateName] = this[props.privateName] || new props.ListClass();
- return this[props.privateName];
- };
- });
-
- /**
- * Get or set the `Player`'s crossorigin option. For the HTML5 player, this
- * sets the `crossOrigin` property on the `<video>` tag to control the CORS
- * behavior.
- *
- * @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
- *
- * @param {string} [value]
- * The value to set the `Player`'s crossorigin to. If an argument is
- * given, must be one of `anonymous` or `use-credentials`.
- *
- * @return {string|undefined}
- * - The current crossorigin value of the `Player` when getting.
- * - undefined when setting
- */
- Player.prototype.crossorigin = Player.prototype.crossOrigin;
-
- /**
- * Global enumeration of players.
- *
- * The keys are the player IDs and the values are either the {@link Player}
- * instance or `null` for disposed players.
- *
- * @type {Object}
- */
- Player.players = {};
- const navigator = window.navigator;
-
- /*
- * Player instance options, surfaced using options
- * options = Player.prototype.options_
- * Make changes in options, not here.
- *
- * @type {Object}
- * @private
- */
- Player.prototype.options_ = {
- // Default order of fallback technology
- techOrder: Tech.defaultTechOrder_,
- html5: {},
- // enable sourceset by default
- enableSourceset: true,
- // default inactivity timeout
- inactivityTimeout: 2000,
- // default playback rates
- playbackRates: [],
- // Add playback rate selection by adding rates
- // 'playbackRates': [0.5, 1, 1.5, 2],
- liveui: false,
- // Included control sets
- children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],
- language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',
- // locales and their language translations
- languages: {},
- // Default message to show when a video cannot be played.
- notSupportedMessage: 'No compatible source was found for this media.',
- normalizeAutoplay: false,
- fullscreen: {
- options: {
- navigationUI: 'hide'
- }
- },
- breakpoints: {},
- responsive: false,
- audioOnlyMode: false,
- audioPosterMode: false,
- // Default smooth seeking to false
- enableSmoothSeeking: false
- };
- TECH_EVENTS_RETRIGGER.forEach(function (event) {
- Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {
- return this.trigger(event);
- };
- });
-
- /**
- * Fired when the player has initial duration and dimension information
- *
- * @event Player#loadedmetadata
- * @type {Event}
- */
-
- /**
- * Fired when the player has downloaded data at the current playback position
- *
- * @event Player#loadeddata
- * @type {Event}
- */
-
- /**
- * Fired when the current playback position has changed *
- * During playback this is fired every 15-250 milliseconds, depending on the
- * playback technology in use.
- *
- * @event Player#timeupdate
- * @type {Event}
- */
-
- /**
- * Fired when the volume changes
- *
- * @event Player#volumechange
- * @type {Event}
- */
-
- /**
- * Reports whether or not a player has a plugin available.
- *
- * This does not report whether or not the plugin has ever been initialized
- * on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
- *
- * @method Player#hasPlugin
- * @param {string} name
- * The name of a plugin.
- *
- * @return {boolean}
- * Whether or not this player has the requested plugin available.
- */
-
- /**
- * Reports whether or not a player is using a plugin by name.
- *
- * For basic plugins, this only reports whether the plugin has _ever_ been
- * initialized on this player.
- *
- * @method Player#usingPlugin
- * @param {string} name
- * The name of a plugin.
- *
- * @return {boolean}
- * Whether or not this player is using the requested plugin.
- */
-
- Component$1.registerComponent('Player', Player);
-
- /**
- * @file plugin.js
- */
-
- /**
- * The base plugin name.
- *
- * @private
- * @constant
- * @type {string}
- */
- const BASE_PLUGIN_NAME = 'plugin';
-
- /**
- * The key on which a player's active plugins cache is stored.
- *
- * @private
- * @constant
- * @type {string}
- */
- const PLUGIN_CACHE_KEY = 'activePlugins_';
-
- /**
- * Stores registered plugins in a private space.
- *
- * @private
- * @type {Object}
- */
- const pluginStorage = {};
-
- /**
- * Reports whether or not a plugin has been registered.
- *
- * @private
- * @param {string} name
- * The name of a plugin.
- *
- * @return {boolean}
- * Whether or not the plugin has been registered.
- */
- const pluginExists = name => pluginStorage.hasOwnProperty(name);
-
- /**
- * Get a single registered plugin by name.
- *
- * @private
- * @param {string} name
- * The name of a plugin.
- *
- * @return {typeof Plugin|Function|undefined}
- * The plugin (or undefined).
- */
- const getPlugin = name => pluginExists(name) ? pluginStorage[name] : undefined;
-
- /**
- * Marks a plugin as "active" on a player.
- *
- * Also, ensures that the player has an object for tracking active plugins.
- *
- * @private
- * @param {Player} player
- * A Video.js player instance.
- *
- * @param {string} name
- * The name of a plugin.
- */
- const markPluginAsActive = (player, name) => {
- player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};
- player[PLUGIN_CACHE_KEY][name] = true;
- };
-
- /**
- * Triggers a pair of plugin setup events.
- *
- * @private
- * @param {Player} player
- * A Video.js player instance.
- *
- * @param {PluginEventHash} hash
- * A plugin event hash.
- *
- * @param {boolean} [before]
- * If true, prefixes the event name with "before". In other words,
- * use this to trigger "beforepluginsetup" instead of "pluginsetup".
- */
- const triggerSetupEvent = (player, hash, before) => {
- const eventName = (before ? 'before' : '') + 'pluginsetup';
- player.trigger(eventName, hash);
- player.trigger(eventName + ':' + hash.name, hash);
- };
-
- /**
- * Takes a basic plugin function and returns a wrapper function which marks
- * on the player that the plugin has been activated.
- *
- * @private
- * @param {string} name
- * The name of the plugin.
- *
- * @param {Function} plugin
- * The basic plugin.
- *
- * @return {Function}
- * A wrapper function for the given plugin.
- */
- const createBasicPlugin = function (name, plugin) {
- const basicPluginWrapper = function () {
- // We trigger the "beforepluginsetup" and "pluginsetup" events on the player
- // regardless, but we want the hash to be consistent with the hash provided
- // for advanced plugins.
- //
- // The only potentially counter-intuitive thing here is the `instance` in
- // the "pluginsetup" event is the value returned by the `plugin` function.
- triggerSetupEvent(this, {
- name,
- plugin,
- instance: null
- }, true);
- const instance = plugin.apply(this, arguments);
- markPluginAsActive(this, name);
- triggerSetupEvent(this, {
- name,
- plugin,
- instance
- });
- return instance;
- };
- Object.keys(plugin).forEach(function (prop) {
- basicPluginWrapper[prop] = plugin[prop];
- });
- return basicPluginWrapper;
- };
-
- /**
- * Takes a plugin sub-class and returns a factory function for generating
- * instances of it.
- *
- * This factory function will replace itself with an instance of the requested
- * sub-class of Plugin.
- *
- * @private
- * @param {string} name
- * The name of the plugin.
- *
- * @param {Plugin} PluginSubClass
- * The advanced plugin.
- *
- * @return {Function}
- */
- const createPluginFactory = (name, PluginSubClass) => {
- // Add a `name` property to the plugin prototype so that each plugin can
- // refer to itself by name.
- PluginSubClass.prototype.name = name;
- return function (...args) {
- triggerSetupEvent(this, {
- name,
- plugin: PluginSubClass,
- instance: null
- }, true);
- const instance = new PluginSubClass(...[this, ...args]);
-
- // The plugin is replaced by a function that returns the current instance.
- this[name] = () => instance;
- triggerSetupEvent(this, instance.getEventHash());
- return instance;
- };
- };
-
- /**
- * Parent class for all advanced plugins.
- *
- * @mixes module:evented~EventedMixin
- * @mixes module:stateful~StatefulMixin
- * @fires Player#beforepluginsetup
- * @fires Player#beforepluginsetup:$name
- * @fires Player#pluginsetup
- * @fires Player#pluginsetup:$name
- * @listens Player#dispose
- * @throws {Error}
- * If attempting to instantiate the base {@link Plugin} class
- * directly instead of via a sub-class.
- */
- class Plugin {
- /**
- * Creates an instance of this class.
- *
- * Sub-classes should call `super` to ensure plugins are properly initialized.
- *
- * @param {Player} player
- * A Video.js player instance.
- */
- constructor(player) {
- if (this.constructor === Plugin) {
- throw new Error('Plugin must be sub-classed; not directly instantiated.');
- }
- this.player = player;
- if (!this.log) {
- this.log = this.player.log.createLogger(this.name);
- }
-
- // Make this object evented, but remove the added `trigger` method so we
- // use the prototype version instead.
- evented(this);
- delete this.trigger;
- stateful(this, this.constructor.defaultState);
- markPluginAsActive(player, this.name);
-
- // Auto-bind the dispose method so we can use it as a listener and unbind
- // it later easily.
- this.dispose = this.dispose.bind(this);
-
- // If the player is disposed, dispose the plugin.
- player.on('dispose', this.dispose);
- }
-
- /**
- * Get the version of the plugin that was set on <pluginName>.VERSION
- */
- version() {
- return this.constructor.VERSION;
- }
-
- /**
- * Each event triggered by plugins includes a hash of additional data with
- * conventional properties.
- *
- * This returns that object or mutates an existing hash.
- *
- * @param {Object} [hash={}]
- * An object to be used as event an event hash.
- *
- * @return {PluginEventHash}
- * An event hash object with provided properties mixed-in.
- */
- getEventHash(hash = {}) {
- hash.name = this.name;
- hash.plugin = this.constructor;
- hash.instance = this;
- return hash;
- }
-
- /**
- * Triggers an event on the plugin object and overrides
- * {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.
- *
- * @param {string|Object} event
- * An event type or an object with a type property.
- *
- * @param {Object} [hash={}]
- * Additional data hash to merge with a
- * {@link PluginEventHash|PluginEventHash}.
- *
- * @return {boolean}
- * Whether or not default was prevented.
- */
- trigger(event, hash = {}) {
- return trigger(this.eventBusEl_, event, this.getEventHash(hash));
- }
-
- /**
- * Handles "statechanged" events on the plugin. No-op by default, override by
- * subclassing.
- *
- * @abstract
- * @param {Event} e
- * An event object provided by a "statechanged" event.
- *
- * @param {Object} e.changes
- * An object describing changes that occurred with the "statechanged"
- * event.
- */
- handleStateChanged(e) {}
-
- /**
- * Disposes a plugin.
- *
- * Subclasses can override this if they want, but for the sake of safety,
- * it's probably best to subscribe the "dispose" event.
- *
- * @fires Plugin#dispose
- */
- dispose() {
- const {
- name,
- player
- } = this;
-
- /**
- * Signals that a advanced plugin is about to be disposed.
- *
- * @event Plugin#dispose
- * @type {Event}
- */
- this.trigger('dispose');
- this.off();
- player.off('dispose', this.dispose);
-
- // Eliminate any possible sources of leaking memory by clearing up
- // references between the player and the plugin instance and nulling out
- // the plugin's state and replacing methods with a function that throws.
- player[PLUGIN_CACHE_KEY][name] = false;
- this.player = this.state = null;
-
- // Finally, replace the plugin name on the player with a new factory
- // function, so that the plugin is ready to be set up again.
- player[name] = createPluginFactory(name, pluginStorage[name]);
- }
-
- /**
- * Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).
- *
- * @param {string|Function} plugin
- * If a string, matches the name of a plugin. If a function, will be
- * tested directly.
- *
- * @return {boolean}
- * Whether or not a plugin is a basic plugin.
- */
- static isBasic(plugin) {
- const p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;
- return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);
- }
-
- /**
- * Register a Video.js plugin.
- *
- * @param {string} name
- * The name of the plugin to be registered. Must be a string and
- * must not match an existing plugin or a method on the `Player`
- * prototype.
- *
- * @param {typeof Plugin|Function} plugin
- * A sub-class of `Plugin` or a function for basic plugins.
- *
- * @return {typeof Plugin|Function}
- * For advanced plugins, a factory function for that plugin. For
- * basic plugins, a wrapper function that initializes the plugin.
- */
- static registerPlugin(name, plugin) {
- if (typeof name !== 'string') {
- throw new Error(`Illegal plugin name, "${name}", must be a string, was ${typeof name}.`);
- }
- if (pluginExists(name)) {
- log$1.warn(`A plugin named "${name}" already exists. You may want to avoid re-registering plugins!`);
- } else if (Player.prototype.hasOwnProperty(name)) {
- throw new Error(`Illegal plugin name, "${name}", cannot share a name with an existing player method!`);
- }
- if (typeof plugin !== 'function') {
- throw new Error(`Illegal plugin for "${name}", must be a function, was ${typeof plugin}.`);
- }
- pluginStorage[name] = plugin;
-
- // Add a player prototype method for all sub-classed plugins (but not for
- // the base Plugin class).
- if (name !== BASE_PLUGIN_NAME) {
- if (Plugin.isBasic(plugin)) {
- Player.prototype[name] = createBasicPlugin(name, plugin);
- } else {
- Player.prototype[name] = createPluginFactory(name, plugin);
- }
- }
- return plugin;
- }
-
- /**
- * De-register a Video.js plugin.
- *
- * @param {string} name
- * The name of the plugin to be de-registered. Must be a string that
- * matches an existing plugin.
- *
- * @throws {Error}
- * If an attempt is made to de-register the base plugin.
- */
- static deregisterPlugin(name) {
- if (name === BASE_PLUGIN_NAME) {
- throw new Error('Cannot de-register base plugin.');
- }
- if (pluginExists(name)) {
- delete pluginStorage[name];
- delete Player.prototype[name];
- }
- }
-
- /**
- * Gets an object containing multiple Video.js plugins.
- *
- * @param {Array} [names]
- * If provided, should be an array of plugin names. Defaults to _all_
- * plugin names.
- *
- * @return {Object|undefined}
- * An object containing plugin(s) associated with their name(s) or
- * `undefined` if no matching plugins exist).
- */
- static getPlugins(names = Object.keys(pluginStorage)) {
- let result;
- names.forEach(name => {
- const plugin = getPlugin(name);
- if (plugin) {
- result = result || {};
- result[name] = plugin;
- }
- });
- return result;
- }
-
- /**
- * Gets a plugin's version, if available
- *
- * @param {string} name
- * The name of a plugin.
- *
- * @return {string}
- * The plugin's version or an empty string.
- */
- static getPluginVersion(name) {
- const plugin = getPlugin(name);
- return plugin && plugin.VERSION || '';
- }
- }
-
- /**
- * Gets a plugin by name if it exists.
- *
- * @static
- * @method getPlugin
- * @memberOf Plugin
- * @param {string} name
- * The name of a plugin.
- *
- * @returns {typeof Plugin|Function|undefined}
- * The plugin (or `undefined`).
- */
- Plugin.getPlugin = getPlugin;
-
- /**
- * The name of the base plugin class as it is registered.
- *
- * @type {string}
- */
- Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;
- Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);
-
- /**
- * Documented in player.js
- *
- * @ignore
- */
- Player.prototype.usingPlugin = function (name) {
- return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;
- };
-
- /**
- * Documented in player.js
- *
- * @ignore
- */
- Player.prototype.hasPlugin = function (name) {
- return !!pluginExists(name);
- };
-
- /**
- * Signals that a plugin is about to be set up on a player.
- *
- * @event Player#beforepluginsetup
- * @type {PluginEventHash}
- */
-
- /**
- * Signals that a plugin is about to be set up on a player - by name. The name
- * is the name of the plugin.
- *
- * @event Player#beforepluginsetup:$name
- * @type {PluginEventHash}
- */
-
- /**
- * Signals that a plugin has just been set up on a player.
- *
- * @event Player#pluginsetup
- * @type {PluginEventHash}
- */
-
- /**
- * Signals that a plugin has just been set up on a player - by name. The name
- * is the name of the plugin.
- *
- * @event Player#pluginsetup:$name
- * @type {PluginEventHash}
- */
-
- /**
- * @typedef {Object} PluginEventHash
- *
- * @property {string} instance
- * For basic plugins, the return value of the plugin function. For
- * advanced plugins, the plugin instance on which the event is fired.
- *
- * @property {string} name
- * The name of the plugin.
- *
- * @property {string} plugin
- * For basic plugins, the plugin function. For advanced plugins, the
- * plugin class/constructor.
- */
-
- /**
- * @file deprecate.js
- * @module deprecate
- */
-
- /**
- * Decorate a function with a deprecation message the first time it is called.
- *
- * @param {string} message
- * A deprecation message to log the first time the returned function
- * is called.
- *
- * @param {Function} fn
- * The function to be deprecated.
- *
- * @return {Function}
- * A wrapper function that will log a deprecation warning the first
- * time it is called. The return value will be the return value of
- * the wrapped function.
- */
- function deprecate(message, fn) {
- let warned = false;
- return function (...args) {
- if (!warned) {
- log$1.warn(message);
- }
- warned = true;
- return fn.apply(this, args);
- };
- }
-
- /**
- * Internal function used to mark a function as deprecated in the next major
- * version with consistent messaging.
- *
- * @param {number} major The major version where it will be removed
- * @param {string} oldName The old function name
- * @param {string} newName The new function name
- * @param {Function} fn The function to deprecate
- * @return {Function} The decorated function
- */
- function deprecateForMajor(major, oldName, newName, fn) {
- return deprecate(`${oldName} is deprecated and will be removed in ${major}.0; please use ${newName} instead.`, fn);
- }
-
- var VjsErrors = {
- UnsupportedSidxContainer: 'unsupported-sidx-container-error',
- DashManifestSidxParsingError: 'dash-manifest-sidx-parsing-error',
- HlsPlaylistRequestError: 'hls-playlist-request-error',
- SegmentUnsupportedMediaFormat: 'segment-unsupported-media-format-error',
- UnsupportedMediaInitialization: 'unsupported-media-initialization-error',
- SegmentSwitchError: 'segment-switch-error',
- SegmentExceedsSourceBufferQuota: 'segment-exceeds-source-buffer-quota-error',
- SegmentAppendError: 'segment-append-error',
- VttLoadError: 'vtt-load-error',
- VttCueParsingError: 'vtt-cue-parsing-error',
- // Errors used in contrib-ads:
- AdsBeforePrerollError: 'ads-before-preroll-error',
- AdsPrerollError: 'ads-preroll-error',
- AdsMidrollError: 'ads-midroll-error',
- AdsPostrollError: 'ads-postroll-error',
- AdsMacroReplacementFailed: 'ads-macro-replacement-failed',
- AdsResumeContentFailed: 'ads-resume-content-failed',
- // Errors used in contrib-eme:
- EMEFailedToRequestMediaKeySystemAccess: 'eme-failed-request-media-key-system-access',
- EMEFailedToCreateMediaKeys: 'eme-failed-create-media-keys',
- EMEFailedToAttachMediaKeysToVideoElement: 'eme-failed-attach-media-keys-to-video',
- EMEFailedToCreateMediaKeySession: 'eme-failed-create-media-key-session',
- EMEFailedToSetServerCertificate: 'eme-failed-set-server-certificate',
- EMEFailedToGenerateLicenseRequest: 'eme-failed-generate-license-request',
- EMEFailedToUpdateSessionWithReceivedLicenseKeys: 'eme-failed-update-session',
- EMEFailedToCloseSession: 'eme-failed-close-session',
- EMEFailedToRemoveKeysFromSession: 'eme-failed-remove-keys',
- EMEFailedToLoadSessionBySessionId: 'eme-failed-load-session'
- };
-
- /**
- * @file video.js
- * @module videojs
- */
-
- /**
- * Normalize an `id` value by trimming off a leading `#`
- *
- * @private
- * @param {string} id
- * A string, maybe with a leading `#`.
- *
- * @return {string}
- * The string, without any leading `#`.
- */
- const normalizeId = id => id.indexOf('#') === 0 ? id.slice(1) : id;
-
- /**
- * A callback that is called when a component is ready. Does not have any
- * parameters and any callback value will be ignored. See: {@link Component~ReadyCallback}
- *
- * @callback ReadyCallback
- */
-
- /**
- * The `videojs()` function doubles as the main function for users to create a
- * {@link Player} instance as well as the main library namespace.
- *
- * It can also be used as a getter for a pre-existing {@link Player} instance.
- * However, we _strongly_ recommend using `videojs.getPlayer()` for this
- * purpose because it avoids any potential for unintended initialization.
- *
- * Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
- * of our JSDoc template, we cannot properly document this as both a function
- * and a namespace, so its function signature is documented here.
- *
- * #### Arguments
- * ##### id
- * string|Element, **required**
- *
- * Video element or video element ID.
- *
- * ##### options
- * Object, optional
- *
- * Options object for providing settings.
- * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
- *
- * ##### ready
- * {@link Component~ReadyCallback}, optional
- *
- * A function to be called when the {@link Player} and {@link Tech} are ready.
- *
- * #### Return Value
- *
- * The `videojs()` function returns a {@link Player} instance.
- *
- * @namespace
- *
- * @borrows AudioTrack as AudioTrack
- * @borrows Component.getComponent as getComponent
- * @borrows module:events.on as on
- * @borrows module:events.one as one
- * @borrows module:events.off as off
- * @borrows module:events.trigger as trigger
- * @borrows EventTarget as EventTarget
- * @borrows module:middleware.use as use
- * @borrows Player.players as players
- * @borrows Plugin.registerPlugin as registerPlugin
- * @borrows Plugin.deregisterPlugin as deregisterPlugin
- * @borrows Plugin.getPlugins as getPlugins
- * @borrows Plugin.getPlugin as getPlugin
- * @borrows Plugin.getPluginVersion as getPluginVersion
- * @borrows Tech.getTech as getTech
- * @borrows Tech.registerTech as registerTech
- * @borrows TextTrack as TextTrack
- * @borrows VideoTrack as VideoTrack
- *
- * @param {string|Element} id
- * Video element or video element ID.
- *
- * @param {Object} [options]
- * Options object for providing settings.
- * See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
- *
- * @param {ReadyCallback} [ready]
- * A function to be called when the {@link Player} and {@link Tech} are
- * ready.
- *
- * @return {Player}
- * The `videojs()` function returns a {@link Player|Player} instance.
- */
- function videojs(id, options, ready) {
- let player = videojs.getPlayer(id);
- if (player) {
- if (options) {
- log$1.warn(`Player "${id}" is already initialised. Options will not be applied.`);
- }
- if (ready) {
- player.ready(ready);
- }
- return player;
- }
- const el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;
- if (!isEl(el)) {
- throw new TypeError('The element or ID supplied is not valid. (videojs)');
- }
-
- // document.body.contains(el) will only check if el is contained within that one document.
- // This causes problems for elements in iframes.
- // Instead, use the element's ownerDocument instead of the global document.
- // This will make sure that the element is indeed in the dom of that document.
- // Additionally, check that the document in question has a default view.
- // If the document is no longer attached to the dom, the defaultView of the document will be null.
- // If element is inside Shadow DOM (e.g. is part of a Custom element), ownerDocument.body
- // always returns false. Instead, use the Shadow DOM root.
- const inShadowDom = 'getRootNode' in el ? el.getRootNode() instanceof window.ShadowRoot : false;
- const rootNode = inShadowDom ? el.getRootNode() : el.ownerDocument.body;
- if (!el.ownerDocument.defaultView || !rootNode.contains(el)) {
- log$1.warn('The element supplied is not included in the DOM');
- }
- options = options || {};
-
- // Store a copy of the el before modification, if it is to be restored in destroy()
- // If div ingest, store the parent div
- if (options.restoreEl === true) {
- options.restoreEl = (el.parentNode && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);
- }
- hooks('beforesetup').forEach(hookFunction => {
- const opts = hookFunction(el, merge$2(options));
- if (!isObject$1(opts) || Array.isArray(opts)) {
- log$1.error('please return an object in beforesetup hooks');
- return;
- }
- options = merge$2(options, opts);
- });
-
- // We get the current "Player" component here in case an integration has
- // replaced it with a custom player.
- const PlayerComponent = Component$1.getComponent('Player');
- player = new PlayerComponent(el, options, ready);
- hooks('setup').forEach(hookFunction => hookFunction(player));
- return player;
- }
- videojs.hooks_ = hooks_;
- videojs.hooks = hooks;
- videojs.hook = hook;
- videojs.hookOnce = hookOnce;
- videojs.removeHook = removeHook;
-
- // Add default styles
- if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {
- let style = $('.vjs-styles-defaults');
- if (!style) {
- style = createStyleElement('vjs-styles-defaults');
- const head = $('head');
- if (head) {
- head.insertBefore(style, head.firstChild);
- }
- setTextContent(style, `
- .video-js {
- width: 300px;
- height: 150px;
- }
-
- .vjs-fluid:not(.vjs-audio-only-mode) {
- padding-top: 56.25%
- }
- `);
- }
- }
-
- // Run Auto-load players
- // You have to wait at least once in case this script is loaded after your
- // video in the DOM (weird behavior only with minified version)
- autoSetupTimeout(1, videojs);
-
- /**
- * Current Video.js version. Follows [semantic versioning](https://semver.org/).
- *
- * @type {string}
- */
- videojs.VERSION = version$5;
-
- /**
- * The global options object. These are the settings that take effect
- * if no overrides are specified when the player is created.
- *
- * @type {Object}
- */
- videojs.options = Player.prototype.options_;
-
- /**
- * Get an object with the currently created players, keyed by player ID
- *
- * @return {Object}
- * The created players
- */
- videojs.getPlayers = () => Player.players;
-
- /**
- * Get a single player based on an ID or DOM element.
- *
- * This is useful if you want to check if an element or ID has an associated
- * Video.js player, but not create one if it doesn't.
- *
- * @param {string|Element} id
- * An HTML element - `<video>`, `<audio>`, or `<video-js>` -
- * or a string matching the `id` of such an element.
- *
- * @return {Player|undefined}
- * A player instance or `undefined` if there is no player instance
- * matching the argument.
- */
- videojs.getPlayer = id => {
- const players = Player.players;
- let tag;
- if (typeof id === 'string') {
- const nId = normalizeId(id);
- const player = players[nId];
- if (player) {
- return player;
- }
- tag = $('#' + nId);
- } else {
- tag = id;
- }
- if (isEl(tag)) {
- const {
- player,
- playerId
- } = tag;
-
- // Element may have a `player` property referring to an already created
- // player instance. If so, return that.
- if (player || players[playerId]) {
- return player || players[playerId];
- }
- }
- };
-
- /**
- * Returns an array of all current players.
- *
- * @return {Array}
- * An array of all players. The array will be in the order that
- * `Object.keys` provides, which could potentially vary between
- * JavaScript engines.
- *
- */
- videojs.getAllPlayers = () =>
- // Disposed players leave a key with a `null` value, so we need to make sure
- // we filter those out.
- Object.keys(Player.players).map(k => Player.players[k]).filter(Boolean);
- videojs.players = Player.players;
- videojs.getComponent = Component$1.getComponent;
-
- /**
- * Register a component so it can referred to by name. Used when adding to other
- * components, either through addChild `component.addChild('myComponent')` or through
- * default children options `{ children: ['myComponent'] }`.
- *
- * > NOTE: You could also just initialize the component before adding.
- * `component.addChild(new MyComponent());`
- *
- * @param {string} name
- * The class name of the component
- *
- * @param {typeof Component} comp
- * The component class
- *
- * @return {typeof Component}
- * The newly registered component
- */
- videojs.registerComponent = (name, comp) => {
- if (Tech.isTech(comp)) {
- log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);
- }
- return Component$1.registerComponent.call(Component$1, name, comp);
- };
- videojs.getTech = Tech.getTech;
- videojs.registerTech = Tech.registerTech;
- videojs.use = use;
-
- /**
- * An object that can be returned by a middleware to signify
- * that the middleware is being terminated.
- *
- * @type {object}
- * @property {object} middleware.TERMINATOR
- */
- Object.defineProperty(videojs, 'middleware', {
- value: {},
- writeable: false,
- enumerable: true
- });
- Object.defineProperty(videojs.middleware, 'TERMINATOR', {
- value: TERMINATOR,
- writeable: false,
- enumerable: true
- });
-
- /**
- * A reference to the {@link module:browser|browser utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:browser|browser}
- */
- videojs.browser = browser;
-
- /**
- * A reference to the {@link module:obj|obj utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:obj|obj}
- */
- videojs.obj = Obj;
-
- /**
- * Deprecated reference to the {@link module:obj.merge|merge function}
- *
- * @type {Function}
- * @see {@link module:obj.merge|merge}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.merge instead.
- */
- videojs.mergeOptions = deprecateForMajor(9, 'videojs.mergeOptions', 'videojs.obj.merge', merge$2);
-
- /**
- * Deprecated reference to the {@link module:obj.defineLazyProperty|defineLazyProperty function}
- *
- * @type {Function}
- * @see {@link module:obj.defineLazyProperty|defineLazyProperty}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.defineLazyProperty instead.
- */
- videojs.defineLazyProperty = deprecateForMajor(9, 'videojs.defineLazyProperty', 'videojs.obj.defineLazyProperty', defineLazyProperty);
-
- /**
- * Deprecated reference to the {@link module:fn.bind_|fn.bind_ function}
- *
- * @type {Function}
- * @see {@link module:fn.bind_|fn.bind_}
- * @deprecated Deprecated and will be removed in 9.0. Please use native Function.prototype.bind instead.
- */
- videojs.bind = deprecateForMajor(9, 'videojs.bind', 'native Function.prototype.bind', bind_);
- videojs.registerPlugin = Plugin.registerPlugin;
- videojs.deregisterPlugin = Plugin.deregisterPlugin;
-
- /**
- * Deprecated method to register a plugin with Video.js
- *
- * @deprecated Deprecated and will be removed in 9.0. Use videojs.registerPlugin() instead.
- *
- * @param {string} name
- * The plugin name
- *
- * @param {typeof Plugin|Function} plugin
- * The plugin sub-class or function
- *
- * @return {typeof Plugin|Function}
- */
- videojs.plugin = (name, plugin) => {
- log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');
- return Plugin.registerPlugin(name, plugin);
- };
- videojs.getPlugins = Plugin.getPlugins;
- videojs.getPlugin = Plugin.getPlugin;
- videojs.getPluginVersion = Plugin.getPluginVersion;
-
- /**
- * Adding languages so that they're available to all players.
- * Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`
- *
- * @param {string} code
- * The language code or dictionary property
- *
- * @param {Object} data
- * The data values to be translated
- *
- * @return {Object}
- * The resulting language dictionary object
- */
- videojs.addLanguage = function (code, data) {
- code = ('' + code).toLowerCase();
- videojs.options.languages = merge$2(videojs.options.languages, {
- [code]: data
- });
- return videojs.options.languages[code];
- };
-
- /**
- * A reference to the {@link module:log|log utility module} as an object.
- *
- * @type {Function}
- * @see {@link module:log|log}
- */
- videojs.log = log$1;
- videojs.createLogger = createLogger;
-
- /**
- * A reference to the {@link module:time|time utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:time|time}
- */
- videojs.time = Time;
-
- /**
- * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
- *
- * @type {Function}
- * @see {@link module:time.createTimeRanges|createTimeRanges}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
- */
- videojs.createTimeRange = deprecateForMajor(9, 'videojs.createTimeRange', 'videojs.time.createTimeRanges', createTimeRanges$1);
-
- /**
- * Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
- *
- * @type {Function}
- * @see {@link module:time.createTimeRanges|createTimeRanges}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
- */
- videojs.createTimeRanges = deprecateForMajor(9, 'videojs.createTimeRanges', 'videojs.time.createTimeRanges', createTimeRanges$1);
-
- /**
- * Deprecated reference to the {@link module:time.formatTime|formatTime function}
- *
- * @type {Function}
- * @see {@link module:time.formatTime|formatTime}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.format instead.
- */
- videojs.formatTime = deprecateForMajor(9, 'videojs.formatTime', 'videojs.time.formatTime', formatTime);
-
- /**
- * Deprecated reference to the {@link module:time.setFormatTime|setFormatTime function}
- *
- * @type {Function}
- * @see {@link module:time.setFormatTime|setFormatTime}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.setFormat instead.
- */
- videojs.setFormatTime = deprecateForMajor(9, 'videojs.setFormatTime', 'videojs.time.setFormatTime', setFormatTime);
-
- /**
- * Deprecated reference to the {@link module:time.resetFormatTime|resetFormatTime function}
- *
- * @type {Function}
- * @see {@link module:time.resetFormatTime|resetFormatTime}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.resetFormat instead.
- */
- videojs.resetFormatTime = deprecateForMajor(9, 'videojs.resetFormatTime', 'videojs.time.resetFormatTime', resetFormatTime);
-
- /**
- * Deprecated reference to the {@link module:url.parseUrl|Url.parseUrl function}
- *
- * @type {Function}
- * @see {@link module:url.parseUrl|parseUrl}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.parseUrl instead.
- */
- videojs.parseUrl = deprecateForMajor(9, 'videojs.parseUrl', 'videojs.url.parseUrl', parseUrl);
-
- /**
- * Deprecated reference to the {@link module:url.isCrossOrigin|Url.isCrossOrigin function}
- *
- * @type {Function}
- * @see {@link module:url.isCrossOrigin|isCrossOrigin}
- * @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.isCrossOrigin instead.
- */
- videojs.isCrossOrigin = deprecateForMajor(9, 'videojs.isCrossOrigin', 'videojs.url.isCrossOrigin', isCrossOrigin);
- videojs.EventTarget = EventTarget$2;
- videojs.any = any;
- videojs.on = on;
- videojs.one = one;
- videojs.off = off;
- videojs.trigger = trigger;
-
- /**
- * A cross-browser XMLHttpRequest wrapper.
- *
- * @function
- * @param {Object} options
- * Settings for the request.
- *
- * @return {XMLHttpRequest|XDomainRequest}
- * The request object.
- *
- * @see https://github.com/Raynos/xhr
- */
- videojs.xhr = lib;
- videojs.TextTrack = TextTrack;
- videojs.AudioTrack = AudioTrack;
- videojs.VideoTrack = VideoTrack;
- ['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(k => {
- videojs[k] = function () {
- log$1.warn(`videojs.${k}() is deprecated; use videojs.dom.${k}() instead`);
- return Dom[k].apply(null, arguments);
- };
- });
- videojs.computedStyle = deprecateForMajor(9, 'videojs.computedStyle', 'videojs.dom.computedStyle', computedStyle);
-
- /**
- * A reference to the {@link module:dom|DOM utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:dom|dom}
- */
- videojs.dom = Dom;
-
- /**
- * A reference to the {@link module:fn|fn utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:fn|fn}
- */
- videojs.fn = Fn;
-
- /**
- * A reference to the {@link module:num|num utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:num|num}
- */
- videojs.num = Num;
-
- /**
- * A reference to the {@link module:str|str utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:str|str}
- */
- videojs.str = Str;
-
- /**
- * A reference to the {@link module:url|URL utility module} as an object.
- *
- * @type {Object}
- * @see {@link module:url|url}
- */
- videojs.url = Url;
-
- // The list of possible error types to occur in video.js
- videojs.Error = VjsErrors;
-
- createCommonjsModule(function (module, exports) {
- /*! @name videojs-contrib-quality-levels @version 4.1.0 @license Apache-2.0 */
- (function (global, factory) {
- module.exports = factory(videojs) ;
- })(commonjsGlobal, function (videojs) {
-
- function _interopDefaultLegacy(e) {
- return e && typeof e === 'object' && 'default' in e ? e : {
- 'default': e
- };
- }
- var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);
-
- /**
- * A single QualityLevel.
- *
- * interface QualityLevel {
- * readonly attribute DOMString id;
- * attribute DOMString label;
- * readonly attribute long width;
- * readonly attribute long height;
- * readonly attribute long bitrate;
- * attribute boolean enabled;
- * };
- *
- * @class QualityLevel
- */
- class QualityLevel {
- /**
- * Creates a QualityLevel
- *
- * @param {Representation|Object} representation The representation of the quality level
- * @param {string} representation.id Unique id of the QualityLevel
- * @param {number=} representation.width Resolution width of the QualityLevel
- * @param {number=} representation.height Resolution height of the QualityLevel
- * @param {number} representation.bandwidth Bitrate of the QualityLevel
- * @param {number=} representation.frameRate Frame-rate of the QualityLevel
- * @param {Function} representation.enabled Callback to enable/disable QualityLevel
- */
- constructor(representation) {
- let level = this; // eslint-disable-line
-
- level.id = representation.id;
- level.label = level.id;
- level.width = representation.width;
- level.height = representation.height;
- level.bitrate = representation.bandwidth;
- level.frameRate = representation.frameRate;
- level.enabled_ = representation.enabled;
- Object.defineProperty(level, 'enabled', {
- /**
- * Get whether the QualityLevel is enabled.
- *
- * @return {boolean} True if the QualityLevel is enabled.
- */
- get() {
- return level.enabled_();
- },
- /**
- * Enable or disable the QualityLevel.
- *
- * @param {boolean} enable true to enable QualityLevel, false to disable.
- */
- set(enable) {
- level.enabled_(enable);
- }
- });
- return level;
- }
- }
-
- /**
- * A list of QualityLevels.
- *
- * interface QualityLevelList : EventTarget {
- * getter QualityLevel (unsigned long index);
- * readonly attribute unsigned long length;
- * readonly attribute long selectedIndex;
- *
- * void addQualityLevel(QualityLevel qualityLevel)
- * void removeQualityLevel(QualityLevel remove)
- * QualityLevel? getQualityLevelById(DOMString id);
- *
- * attribute EventHandler onchange;
- * attribute EventHandler onaddqualitylevel;
- * attribute EventHandler onremovequalitylevel;
- * };
- *
- * @extends videojs.EventTarget
- * @class QualityLevelList
- */
- class QualityLevelList extends videojs__default["default"].EventTarget {
- /**
- * Creates a QualityLevelList.
- */
- constructor() {
- super();
- let list = this; // eslint-disable-line
-
- list.levels_ = [];
- list.selectedIndex_ = -1;
-
- /**
- * Get the index of the currently selected QualityLevel.
- *
- * @returns {number} The index of the selected QualityLevel. -1 if none selected.
- * @readonly
- */
- Object.defineProperty(list, 'selectedIndex', {
- get() {
- return list.selectedIndex_;
- }
- });
-
- /**
- * Get the length of the list of QualityLevels.
- *
- * @returns {number} The length of the list.
- * @readonly
- */
- Object.defineProperty(list, 'length', {
- get() {
- return list.levels_.length;
- }
- });
- list[Symbol.iterator] = () => list.levels_.values();
- return list;
- }
-
- /**
- * Adds a quality level to the list.
- *
- * @param {Representation|Object} representation The representation of the quality level
- * @param {string} representation.id Unique id of the QualityLevel
- * @param {number=} representation.width Resolution width of the QualityLevel
- * @param {number=} representation.height Resolution height of the QualityLevel
- * @param {number} representation.bandwidth Bitrate of the QualityLevel
- * @param {number=} representation.frameRate Frame-rate of the QualityLevel
- * @param {Function} representation.enabled Callback to enable/disable QualityLevel
- * @return {QualityLevel} the QualityLevel added to the list
- * @method addQualityLevel
- */
- addQualityLevel(representation) {
- let qualityLevel = this.getQualityLevelById(representation.id);
-
- // Do not add duplicate quality levels
- if (qualityLevel) {
- return qualityLevel;
- }
- const index = this.levels_.length;
- qualityLevel = new QualityLevel(representation);
- if (!('' + index in this)) {
- Object.defineProperty(this, index, {
- get() {
- return this.levels_[index];
- }
- });
- }
- this.levels_.push(qualityLevel);
- this.trigger({
- qualityLevel,
- type: 'addqualitylevel'
- });
- return qualityLevel;
- }
-
- /**
- * Removes a quality level from the list.
- *
- * @param {QualityLevel} qualityLevel The QualityLevel to remove from the list.
- * @return {QualityLevel|null} the QualityLevel removed or null if nothing removed
- * @method removeQualityLevel
- */
- removeQualityLevel(qualityLevel) {
- let removed = null;
- for (let i = 0, l = this.length; i < l; i++) {
- if (this[i] === qualityLevel) {
- removed = this.levels_.splice(i, 1)[0];
- if (this.selectedIndex_ === i) {
- this.selectedIndex_ = -1;
- } else if (this.selectedIndex_ > i) {
- this.selectedIndex_--;
- }
- break;
- }
- }
- if (removed) {
- this.trigger({
- qualityLevel,
- type: 'removequalitylevel'
- });
- }
- return removed;
- }
-
- /**
- * Searches for a QualityLevel with the given id.
- *
- * @param {string} id The id of the QualityLevel to find.
- * @return {QualityLevel|null} The QualityLevel with id, or null if not found.
- * @method getQualityLevelById
- */
- getQualityLevelById(id) {
- for (let i = 0, l = this.length; i < l; i++) {
- const level = this[i];
- if (level.id === id) {
- return level;
- }
- }
- return null;
- }
-
- /**
- * Resets the list of QualityLevels to empty
- *
- * @method dispose
- */
- dispose() {
- this.selectedIndex_ = -1;
- this.levels_.length = 0;
- }
- }
-
- /**
- * change - The selected QualityLevel has changed.
- * addqualitylevel - A QualityLevel has been added to the QualityLevelList.
- * removequalitylevel - A QualityLevel has been removed from the QualityLevelList.
- */
- QualityLevelList.prototype.allowedEvents_ = {
- change: 'change',
- addqualitylevel: 'addqualitylevel',
- removequalitylevel: 'removequalitylevel'
- };
-
- // emulate attribute EventHandler support to allow for feature detection
- for (const event in QualityLevelList.prototype.allowedEvents_) {
- QualityLevelList.prototype['on' + event] = null;
- }
- var version = "4.1.0";
-
- /**
- * Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and
- * event handlers.
- *
- * @param {Player} player Player object.
- * @param {Object} options Plugin options object.
- * @return {QualityLevelList} a list of QualityLevels
- */
- const initPlugin = function (player, options) {
- const originalPluginFn = player.qualityLevels;
- const qualityLevelList = new QualityLevelList();
- const disposeHandler = function () {
- qualityLevelList.dispose();
- player.qualityLevels = originalPluginFn;
- player.off('dispose', disposeHandler);
- };
- player.on('dispose', disposeHandler);
- player.qualityLevels = () => qualityLevelList;
- player.qualityLevels.VERSION = version;
- return qualityLevelList;
- };
-
- /**
- * A video.js plugin.
- *
- * In the plugin function, the value of `this` is a video.js `Player`
- * instance. You cannot rely on the player being in a "ready" state here,
- * depending on how the plugin is invoked. This may or may not be important
- * to you; if not, remove the wait for "ready"!
- *
- * @param {Object} options Plugin options object
- * @return {QualityLevelList} a list of QualityLevels
- */
- const qualityLevels = function (options) {
- return initPlugin(this, videojs__default["default"].obj.merge({}, options));
- };
-
- // Register the plugin with video.js.
- videojs__default["default"].registerPlugin('qualityLevels', qualityLevels);
-
- // Include the version number.
- qualityLevels.VERSION = version;
- return qualityLevels;
- });
- });
-
- var urlToolkit = createCommonjsModule(function (module, exports) {
- // see https://tools.ietf.org/html/rfc1808
-
- (function (root) {
- var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/;
- var FIRST_SEGMENT_REGEX = /^(?=([^\/?#]*))\1([^]*)$/;
- var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
- var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
- var URLToolkit = {
- // If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
- // E.g
- // With opts.alwaysNormalize = false (default, spec compliant)
- // http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
- // With opts.alwaysNormalize = true (not spec compliant)
- // http://a.com/b/cd + /e/f/../g => http://a.com/e/g
- buildAbsoluteURL: function (baseURL, relativeURL, opts) {
- opts = opts || {};
- // remove any remaining space and CRLF
- baseURL = baseURL.trim();
- relativeURL = relativeURL.trim();
- if (!relativeURL) {
- // 2a) If the embedded URL is entirely empty, it inherits the
- // entire base URL (i.e., is set equal to the base URL)
- // and we are done.
- if (!opts.alwaysNormalize) {
- return baseURL;
- }
- var basePartsForNormalise = URLToolkit.parseURL(baseURL);
- if (!basePartsForNormalise) {
- throw new Error('Error trying to parse base URL.');
- }
- basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
- return URLToolkit.buildURLFromParts(basePartsForNormalise);
- }
- var relativeParts = URLToolkit.parseURL(relativeURL);
- if (!relativeParts) {
- throw new Error('Error trying to parse relative URL.');
- }
- if (relativeParts.scheme) {
- // 2b) If the embedded URL starts with a scheme name, it is
- // interpreted as an absolute URL and we are done.
- if (!opts.alwaysNormalize) {
- return relativeURL;
- }
- relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
- return URLToolkit.buildURLFromParts(relativeParts);
- }
- var baseParts = URLToolkit.parseURL(baseURL);
- if (!baseParts) {
- throw new Error('Error trying to parse base URL.');
- }
- if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
- // If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
- // This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
- var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
- baseParts.netLoc = pathParts[1];
- baseParts.path = pathParts[2];
- }
- if (baseParts.netLoc && !baseParts.path) {
- baseParts.path = '/';
- }
- var builtParts = {
- // 2c) Otherwise, the embedded URL inherits the scheme of
- // the base URL.
- scheme: baseParts.scheme,
- netLoc: relativeParts.netLoc,
- path: null,
- params: relativeParts.params,
- query: relativeParts.query,
- fragment: relativeParts.fragment
- };
- if (!relativeParts.netLoc) {
- // 3) If the embedded URL's <net_loc> is non-empty, we skip to
- // Step 7. Otherwise, the embedded URL inherits the <net_loc>
- // (if any) of the base URL.
- builtParts.netLoc = baseParts.netLoc;
- // 4) If the embedded URL path is preceded by a slash "/", the
- // path is not relative and we skip to Step 7.
- if (relativeParts.path[0] !== '/') {
- if (!relativeParts.path) {
- // 5) If the embedded URL path is empty (and not preceded by a
- // slash), then the embedded URL inherits the base URL path
- builtParts.path = baseParts.path;
- // 5a) if the embedded URL's <params> is non-empty, we skip to
- // step 7; otherwise, it inherits the <params> of the base
- // URL (if any) and
- if (!relativeParts.params) {
- builtParts.params = baseParts.params;
- // 5b) if the embedded URL's <query> is non-empty, we skip to
- // step 7; otherwise, it inherits the <query> of the base
- // URL (if any) and we skip to step 7.
- if (!relativeParts.query) {
- builtParts.query = baseParts.query;
- }
- }
- } else {
- // 6) The last segment of the base URL's path (anything
- // following the rightmost slash "/", or the entire path if no
- // slash is present) is removed and the embedded URL's path is
- // appended in its place.
- var baseURLPath = baseParts.path;
- var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;
- builtParts.path = URLToolkit.normalizePath(newPath);
- }
- }
- }
- if (builtParts.path === null) {
- builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
- }
- return URLToolkit.buildURLFromParts(builtParts);
- },
- parseURL: function (url) {
- var parts = URL_REGEX.exec(url);
- if (!parts) {
- return null;
- }
- return {
- scheme: parts[1] || '',
- netLoc: parts[2] || '',
- path: parts[3] || '',
- params: parts[4] || '',
- query: parts[5] || '',
- fragment: parts[6] || ''
- };
- },
- normalizePath: function (path) {
- // The following operations are
- // then applied, in order, to the new path:
- // 6a) All occurrences of "./", where "." is a complete path
- // segment, are removed.
- // 6b) If the path ends with "." as a complete path segment,
- // that "." is removed.
- path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');
- // 6c) All occurrences of "<segment>/../", where <segment> is a
- // complete path segment not equal to "..", are removed.
- // Removal of these path segments is performed iteratively,
- // removing the leftmost matching pattern on each iteration,
- // until no matching pattern remains.
- // 6d) If the path ends with "<segment>/..", where <segment> is a
- // complete path segment not equal to "..", that
- // "<segment>/.." is removed.
- while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}
- return path.split('').reverse().join('');
- },
- buildURLFromParts: function (parts) {
- return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
- }
- };
- module.exports = URLToolkit;
- })();
- });
-
- var DEFAULT_LOCATION = 'http://example.com';
- var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {
- // return early if we don't need to resolve
- if (/^[a-z]+:/i.test(relativeUrl)) {
- return relativeUrl;
- } // if baseUrl is a data URI, ignore it and resolve everything relative to window.location
-
- if (/^data:/.test(baseUrl)) {
- baseUrl = window.location && window.location.href || '';
- } // IE11 supports URL but not the URL constructor
- // feature detect the behavior we want
-
- var nativeURL = typeof window.URL === 'function';
- var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)
- // and if baseUrl isn't an absolute url
-
- var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
-
- if (nativeURL) {
- baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
- } else if (!/\/\//i.test(baseUrl)) {
- baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
- }
- if (nativeURL) {
- var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol
- // and if we're location-less, remove the location
- // otherwise, return the url unmodified
-
- if (removeLocation) {
- return newUrl.href.slice(DEFAULT_LOCATION.length);
- } else if (protocolLess) {
- return newUrl.href.slice(newUrl.protocol.length);
- }
- return newUrl.href;
- }
- return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
- };
-
- /**
- * @file stream.js
- */
-
- /**
- * A lightweight readable stream implemention that handles event dispatching.
- *
- * @class Stream
- */
- var Stream = /*#__PURE__*/function () {
- function Stream() {
- this.listeners = {};
- }
- /**
- * Add a listener for a specified event type.
- *
- * @param {string} type the event name
- * @param {Function} listener the callback to be invoked when an event of
- * the specified type occurs
- */
-
- var _proto = Stream.prototype;
- _proto.on = function on(type, listener) {
- if (!this.listeners[type]) {
- this.listeners[type] = [];
- }
- this.listeners[type].push(listener);
- }
- /**
- * Remove a listener for a specified event type.
- *
- * @param {string} type the event name
- * @param {Function} listener a function previously registered for this
- * type of event through `on`
- * @return {boolean} if we could turn it off or not
- */;
-
- _proto.off = function off(type, listener) {
- if (!this.listeners[type]) {
- return false;
- }
- var index = this.listeners[type].indexOf(listener); // TODO: which is better?
- // In Video.js we slice listener functions
- // on trigger so that it does not mess up the order
- // while we loop through.
- //
- // Here we slice on off so that the loop in trigger
- // can continue using it's old reference to loop without
- // messing up the order.
-
- this.listeners[type] = this.listeners[type].slice(0);
- this.listeners[type].splice(index, 1);
- return index > -1;
- }
- /**
- * Trigger an event of the specified type on this stream. Any additional
- * arguments to this function are passed as parameters to event listeners.
- *
- * @param {string} type the event name
- */;
-
- _proto.trigger = function trigger(type) {
- var callbacks = this.listeners[type];
- if (!callbacks) {
- return;
- } // Slicing the arguments on every invocation of this method
- // can add a significant amount of overhead. Avoid the
- // intermediate object creation for the common case of a
- // single callback argument
-
- if (arguments.length === 2) {
- var length = callbacks.length;
- for (var i = 0; i < length; ++i) {
- callbacks[i].call(this, arguments[1]);
- }
- } else {
- var args = Array.prototype.slice.call(arguments, 1);
- var _length = callbacks.length;
- for (var _i = 0; _i < _length; ++_i) {
- callbacks[_i].apply(this, args);
- }
- }
- }
- /**
- * Destroys the stream and cleans up.
- */;
-
- _proto.dispose = function dispose() {
- this.listeners = {};
- }
- /**
- * Forwards all `data` events on this stream to the destination stream. The
- * destination stream should provide a method `push` to receive the data
- * events as they arrive.
- *
- * @param {Stream} destination the stream that will receive all `data` events
- * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
- */;
-
- _proto.pipe = function pipe(destination) {
- this.on('data', function (data) {
- destination.push(data);
- });
- };
- return Stream;
- }();
-
- var atob$1 = function atob(s) {
- return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
- };
- function decodeB64ToUint8Array$1(b64Text) {
- var decodedString = atob$1(b64Text);
- var array = new Uint8Array(decodedString.length);
- for (var i = 0; i < decodedString.length; i++) {
- array[i] = decodedString.charCodeAt(i);
- }
- return array;
- }
-
- /*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */
-
- /**
- * @file m3u8/line-stream.js
- */
- /**
- * A stream that buffers string input and generates a `data` event for each
- * line.
- *
- * @class LineStream
- * @extends Stream
- */
-
- class LineStream extends Stream {
- constructor() {
- super();
- this.buffer = '';
- }
- /**
- * Add new data to be parsed.
- *
- * @param {string} data the text to process
- */
-
- push(data) {
- let nextNewline;
- this.buffer += data;
- nextNewline = this.buffer.indexOf('\n');
- for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) {
- this.trigger('data', this.buffer.substring(0, nextNewline));
- this.buffer = this.buffer.substring(nextNewline + 1);
- }
- }
- }
- const TAB = String.fromCharCode(0x09);
- const parseByterange = function (byterangeString) {
- // optionally match and capture 0+ digits before `@`
- // optionally match and capture 0+ digits after `@`
- const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');
- const result = {};
- if (match[1]) {
- result.length = parseInt(match[1], 10);
- }
- if (match[2]) {
- result.offset = parseInt(match[2], 10);
- }
- return result;
- };
- /**
- * "forgiving" attribute list psuedo-grammar:
- * attributes -> keyvalue (',' keyvalue)*
- * keyvalue -> key '=' value
- * key -> [^=]*
- * value -> '"' [^"]* '"' | [^,]*
- */
-
- const attributeSeparator = function () {
- const key = '[^=]*';
- const value = '"[^"]*"|[^,]*';
- const keyvalue = '(?:' + key + ')=(?:' + value + ')';
- return new RegExp('(?:^|,)(' + keyvalue + ')');
- };
- /**
- * Parse attributes from a line given the separator
- *
- * @param {string} attributes the attribute line to parse
- */
-
- const parseAttributes$1 = function (attributes) {
- const result = {};
- if (!attributes) {
- return result;
- } // split the string using attributes as the separator
-
- const attrs = attributes.split(attributeSeparator());
- let i = attrs.length;
- let attr;
- while (i--) {
- // filter out unmatched portions of the string
- if (attrs[i] === '') {
- continue;
- } // split the key and value
-
- attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value
-
- attr[0] = attr[0].replace(/^\s+|\s+$/g, '');
- attr[1] = attr[1].replace(/^\s+|\s+$/g, '');
- attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1');
- result[attr[0]] = attr[1];
- }
- return result;
- };
- /**
- * A line-level M3U8 parser event stream. It expects to receive input one
- * line at a time and performs a context-free parse of its contents. A stream
- * interpretation of a manifest can be useful if the manifest is expected to
- * be too large to fit comfortably into memory or the entirety of the input
- * is not immediately available. Otherwise, it's probably much easier to work
- * with a regular `Parser` object.
- *
- * Produces `data` events with an object that captures the parser's
- * interpretation of the input. That object has a property `tag` that is one
- * of `uri`, `comment`, or `tag`. URIs only have a single additional
- * property, `line`, which captures the entirety of the input without
- * interpretation. Comments similarly have a single additional property
- * `text` which is the input without the leading `#`.
- *
- * Tags always have a property `tagType` which is the lower-cased version of
- * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,
- * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized
- * tags are given the tag type `unknown` and a single additional property
- * `data` with the remainder of the input.
- *
- * @class ParseStream
- * @extends Stream
- */
-
- class ParseStream extends Stream {
- constructor() {
- super();
- this.customParsers = [];
- this.tagMappers = [];
- }
- /**
- * Parses an additional line of input.
- *
- * @param {string} line a single line of an M3U8 file to parse
- */
-
- push(line) {
- let match;
- let event; // strip whitespace
-
- line = line.trim();
- if (line.length === 0) {
- // ignore empty lines
- return;
- } // URIs
-
- if (line[0] !== '#') {
- this.trigger('data', {
- type: 'uri',
- uri: line
- });
- return;
- } // map tags
-
- const newLines = this.tagMappers.reduce((acc, mapper) => {
- const mappedLine = mapper(line); // skip if unchanged
-
- if (mappedLine === line) {
- return acc;
- }
- return acc.concat([mappedLine]);
- }, [line]);
- newLines.forEach(newLine => {
- for (let i = 0; i < this.customParsers.length; i++) {
- if (this.customParsers[i].call(this, newLine)) {
- return;
- }
- } // Comments
-
- if (newLine.indexOf('#EXT') !== 0) {
- this.trigger('data', {
- type: 'comment',
- text: newLine.slice(1)
- });
- return;
- } // strip off any carriage returns here so the regex matching
- // doesn't have to account for them.
-
- newLine = newLine.replace('\r', ''); // Tags
-
- match = /^#EXTM3U/.exec(newLine);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'm3u'
- });
- return;
- }
- match = /^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'inf'
- };
- if (match[1]) {
- event.duration = parseFloat(match[1]);
- }
- if (match[2]) {
- event.title = match[2];
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'targetduration'
- };
- if (match[1]) {
- event.duration = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'version'
- };
- if (match[1]) {
- event.version = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'media-sequence'
- };
- if (match[1]) {
- event.number = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'discontinuity-sequence'
- };
- if (match[1]) {
- event.number = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'playlist-type'
- };
- if (match[1]) {
- event.playlistType = match[1];
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);
- if (match) {
- event = _extends$1(parseByterange(match[1]), {
- type: 'tag',
- tagType: 'byterange'
- });
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'allow-cache'
- };
- if (match[1]) {
- event.allowed = !/NO/.test(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MAP:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'map'
- };
- if (match[1]) {
- const attributes = parseAttributes$1(match[1]);
- if (attributes.URI) {
- event.uri = attributes.URI;
- }
- if (attributes.BYTERANGE) {
- event.byterange = parseByterange(attributes.BYTERANGE);
- }
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'stream-inf'
- };
- if (match[1]) {
- event.attributes = parseAttributes$1(match[1]);
- if (event.attributes.RESOLUTION) {
- const split = event.attributes.RESOLUTION.split('x');
- const resolution = {};
- if (split[0]) {
- resolution.width = parseInt(split[0], 10);
- }
- if (split[1]) {
- resolution.height = parseInt(split[1], 10);
- }
- event.attributes.RESOLUTION = resolution;
- }
- if (event.attributes.BANDWIDTH) {
- event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);
- }
- if (event.attributes['FRAME-RATE']) {
- event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);
- }
- if (event.attributes['PROGRAM-ID']) {
- event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);
- }
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'media'
- };
- if (match[1]) {
- event.attributes = parseAttributes$1(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-ENDLIST/.exec(newLine);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'endlist'
- });
- return;
- }
- match = /^#EXT-X-DISCONTINUITY/.exec(newLine);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'discontinuity'
- });
- return;
- }
- match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'program-date-time'
- };
- if (match[1]) {
- event.dateTimeString = match[1];
- event.dateTimeObject = new Date(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-KEY:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'key'
- };
- if (match[1]) {
- event.attributes = parseAttributes$1(match[1]); // parse the IV string into a Uint32Array
-
- if (event.attributes.IV) {
- if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {
- event.attributes.IV = event.attributes.IV.substring(2);
- }
- event.attributes.IV = event.attributes.IV.match(/.{8}/g);
- event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);
- event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);
- event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);
- event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);
- event.attributes.IV = new Uint32Array(event.attributes.IV);
- }
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-START:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'start'
- };
- if (match[1]) {
- event.attributes = parseAttributes$1(match[1]);
- event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);
- event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-out-cont'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-out'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-in'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'skip'
- };
- event.attributes = parseAttributes$1(match[1]);
- if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {
- event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);
- }
- if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {
- event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-PART:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'part'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['DURATION'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseFloat(event.attributes[key]);
- }
- });
- ['INDEPENDENT', 'GAP'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = /YES/.test(event.attributes[key]);
- }
- });
- if (event.attributes.hasOwnProperty('BYTERANGE')) {
- event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'server-control'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseFloat(event.attributes[key]);
- }
- });
- ['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = /YES/.test(event.attributes[key]);
- }
- });
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'part-inf'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['PART-TARGET'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseFloat(event.attributes[key]);
- }
- });
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'preload-hint'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseInt(event.attributes[key], 10);
- const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';
- event.attributes.byterange = event.attributes.byterange || {};
- event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.
-
- delete event.attributes[key];
- }
- });
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'rendition-report'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['LAST-MSN', 'LAST-PART'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseInt(event.attributes[key], 10);
- }
- });
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);
- if (match && match[1]) {
- event = {
- type: 'tag',
- tagType: 'daterange'
- };
- event.attributes = parseAttributes$1(match[1]);
- ['ID', 'CLASS'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = String(event.attributes[key]);
- }
- });
- ['START-DATE', 'END-DATE'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = new Date(event.attributes[key]);
- }
- });
- ['DURATION', 'PLANNED-DURATION'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = parseFloat(event.attributes[key]);
- }
- });
- ['END-ON-NEXT'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = /YES/i.test(event.attributes[key]);
- }
- });
- ['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {
- if (event.attributes.hasOwnProperty(key)) {
- event.attributes[key] = event.attributes[key].toString(16);
- }
- });
- const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;
- for (const key in event.attributes) {
- if (!clientAttributePattern.test(key)) {
- continue;
- }
- const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);
- const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]);
- event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'independent-segments'
- });
- return;
- }
- match = /^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'content-steering'
- };
- event.attributes = parseAttributes$1(match[1]);
- this.trigger('data', event);
- return;
- } // unknown tag type
-
- this.trigger('data', {
- type: 'tag',
- data: newLine.slice(4)
- });
- });
- }
- /**
- * Add a parser for custom headers
- *
- * @param {Object} options a map of options for the added parser
- * @param {RegExp} options.expression a regular expression to match the custom header
- * @param {string} options.customType the custom type to register to the output
- * @param {Function} [options.dataParser] function to parse the line into an object
- * @param {boolean} [options.segment] should tag data be attached to the segment object
- */
-
- addParser({
- expression,
- customType,
- dataParser,
- segment
- }) {
- if (typeof dataParser !== 'function') {
- dataParser = line => line;
- }
- this.customParsers.push(line => {
- const match = expression.exec(line);
- if (match) {
- this.trigger('data', {
- type: 'custom',
- data: dataParser(line),
- customType,
- segment
- });
- return true;
- }
- });
- }
- /**
- * Add a custom header mapper
- *
- * @param {Object} options
- * @param {RegExp} options.expression a regular expression to match the custom header
- * @param {Function} options.map function to translate tag into a different tag
- */
-
- addTagMapper({
- expression,
- map
- }) {
- const mapFn = line => {
- if (expression.test(line)) {
- return map(line);
- }
- return line;
- };
- this.tagMappers.push(mapFn);
- }
- }
- const camelCase = str => str.toLowerCase().replace(/-(\w)/g, a => a[1].toUpperCase());
- const camelCaseKeys = function (attributes) {
- const result = {};
- Object.keys(attributes).forEach(function (key) {
- result[camelCase(key)] = attributes[key];
- });
- return result;
- }; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration
- // we need this helper because defaults are based upon targetDuration and
- // partTargetDuration being set, but they may not be if SERVER-CONTROL appears before
- // target durations are set.
-
- const setHoldBack = function (manifest) {
- const {
- serverControl,
- targetDuration,
- partTargetDuration
- } = manifest;
- if (!serverControl) {
- return;
- }
- const tag = '#EXT-X-SERVER-CONTROL';
- const hb = 'holdBack';
- const phb = 'partHoldBack';
- const minTargetDuration = targetDuration && targetDuration * 3;
- const minPartDuration = partTargetDuration && partTargetDuration * 2;
- if (targetDuration && !serverControl.hasOwnProperty(hb)) {
- serverControl[hb] = minTargetDuration;
- this.trigger('info', {
- message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`
- });
- }
- if (minTargetDuration && serverControl[hb] < minTargetDuration) {
- this.trigger('warn', {
- message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`
- });
- serverControl[hb] = minTargetDuration;
- } // default no part hold back to part target duration * 3
-
- if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {
- serverControl[phb] = partTargetDuration * 3;
- this.trigger('info', {
- message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`
- });
- } // if part hold back is too small default it to part target duration * 2
-
- if (partTargetDuration && serverControl[phb] < minPartDuration) {
- this.trigger('warn', {
- message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`
- });
- serverControl[phb] = minPartDuration;
- }
- };
- /**
- * A parser for M3U8 files. The current interpretation of the input is
- * exposed as a property `manifest` on parser objects. It's just two lines to
- * create and parse a manifest once you have the contents available as a string:
- *
- * ```js
- * var parser = new m3u8.Parser();
- * parser.push(xhr.responseText);
- * ```
- *
- * New input can later be applied to update the manifest object by calling
- * `push` again.
- *
- * The parser attempts to create a usable manifest object even if the
- * underlying input is somewhat nonsensical. It emits `info` and `warning`
- * events during the parse if it encounters input that seems invalid or
- * requires some property of the manifest object to be defaulted.
- *
- * @class Parser
- * @extends Stream
- */
-
- class Parser extends Stream {
- constructor() {
- super();
- this.lineStream = new LineStream();
- this.parseStream = new ParseStream();
- this.lineStream.pipe(this.parseStream);
- this.lastProgramDateTime = null;
- /* eslint-disable consistent-this */
-
- const self = this;
- /* eslint-enable consistent-this */
-
- const uris = [];
- let currentUri = {}; // if specified, the active EXT-X-MAP definition
-
- let currentMap; // if specified, the active decryption key
-
- let key;
- let hasParts = false;
- const noop = function () {};
- const defaultMediaGroups = {
- 'AUDIO': {},
- 'VIDEO': {},
- 'CLOSED-CAPTIONS': {},
- 'SUBTITLES': {}
- }; // This is the Widevine UUID from DASH IF IOP. The same exact string is
- // used in MPDs with Widevine encrypted streams.
-
- const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities
-
- let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data
-
- this.manifest = {
- allowCache: true,
- discontinuityStarts: [],
- dateRanges: [],
- segments: []
- }; // keep track of the last seen segment's byte range end, as segments are not required
- // to provide the offset, in which case it defaults to the next byte after the
- // previous segment
-
- let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.
-
- let lastPartByterangeEnd = 0;
- const dateRangeTags = {};
- this.on('end', () => {
- // only add preloadSegment if we don't yet have a uri for it.
- // and we actually have parts/preloadHints
- if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {
- return;
- }
- if (!currentUri.map && currentMap) {
- currentUri.map = currentMap;
- }
- if (!currentUri.key && key) {
- currentUri.key = key;
- }
- if (!currentUri.timeline && typeof currentTimeline === 'number') {
- currentUri.timeline = currentTimeline;
- }
- this.manifest.preloadSegment = currentUri;
- }); // update the manifest with the m3u8 entry from the parse stream
-
- this.parseStream.on('data', function (entry) {
- let mediaGroup;
- let rendition;
- ({
- tag() {
- // switch based on the tag type
- (({
- version() {
- if (entry.version) {
- this.manifest.version = entry.version;
- }
- },
- 'allow-cache'() {
- this.manifest.allowCache = entry.allowed;
- if (!('allowed' in entry)) {
- this.trigger('info', {
- message: 'defaulting allowCache to YES'
- });
- this.manifest.allowCache = true;
- }
- },
- byterange() {
- const byterange = {};
- if ('length' in entry) {
- currentUri.byterange = byterange;
- byterange.length = entry.length;
- if (!('offset' in entry)) {
- /*
- * From the latest spec (as of this writing):
- * https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2
- *
- * Same text since EXT-X-BYTERANGE's introduction in draft 7:
- * https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)
- *
- * "If o [offset] is not present, the sub-range begins at the next byte
- * following the sub-range of the previous media segment."
- */
- entry.offset = lastByterangeEnd;
- }
- }
- if ('offset' in entry) {
- currentUri.byterange = byterange;
- byterange.offset = entry.offset;
- }
- lastByterangeEnd = byterange.offset + byterange.length;
- },
- endlist() {
- this.manifest.endList = true;
- },
- inf() {
- if (!('mediaSequence' in this.manifest)) {
- this.manifest.mediaSequence = 0;
- this.trigger('info', {
- message: 'defaulting media sequence to zero'
- });
- }
- if (!('discontinuitySequence' in this.manifest)) {
- this.manifest.discontinuitySequence = 0;
- this.trigger('info', {
- message: 'defaulting discontinuity sequence to zero'
- });
- }
- if (entry.title) {
- currentUri.title = entry.title;
- }
- if (entry.duration > 0) {
- currentUri.duration = entry.duration;
- }
- if (entry.duration === 0) {
- currentUri.duration = 0.01;
- this.trigger('info', {
- message: 'updating zero segment duration to a small value'
- });
- }
- this.manifest.segments = uris;
- },
- key() {
- if (!entry.attributes) {
- this.trigger('warn', {
- message: 'ignoring key declaration without attribute list'
- });
- return;
- } // clear the active encryption key
-
- if (entry.attributes.METHOD === 'NONE') {
- key = null;
- return;
- }
- if (!entry.attributes.URI) {
- this.trigger('warn', {
- message: 'ignoring key declaration without URI'
- });
- return;
- }
- if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {
- this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
-
- this.manifest.contentProtection['com.apple.fps.1_0'] = {
- attributes: entry.attributes
- };
- return;
- }
- if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {
- this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
-
- this.manifest.contentProtection['com.microsoft.playready'] = {
- uri: entry.attributes.URI
- };
- return;
- } // check if the content is encrypted for Widevine
- // Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf
-
- if (entry.attributes.KEYFORMAT === widevineUuid) {
- const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];
- if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {
- this.trigger('warn', {
- message: 'invalid key method provided for Widevine'
- });
- return;
- }
- if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {
- this.trigger('warn', {
- message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'
- });
- }
- if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {
- this.trigger('warn', {
- message: 'invalid key URI provided for Widevine'
- });
- return;
- }
- if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {
- this.trigger('warn', {
- message: 'invalid key ID provided for Widevine'
- });
- return;
- } // if Widevine key attributes are valid, store them as `contentProtection`
- // on the manifest to emulate Widevine tag structure in a DASH mpd
-
- this.manifest.contentProtection = this.manifest.contentProtection || {};
- this.manifest.contentProtection['com.widevine.alpha'] = {
- attributes: {
- schemeIdUri: entry.attributes.KEYFORMAT,
- // remove '0x' from the key id string
- keyId: entry.attributes.KEYID.substring(2)
- },
- // decode the base64-encoded PSSH box
- pssh: decodeB64ToUint8Array$1(entry.attributes.URI.split(',')[1])
- };
- return;
- }
- if (!entry.attributes.METHOD) {
- this.trigger('warn', {
- message: 'defaulting key method to AES-128'
- });
- } // setup an encryption key for upcoming segments
-
- key = {
- method: entry.attributes.METHOD || 'AES-128',
- uri: entry.attributes.URI
- };
- if (typeof entry.attributes.IV !== 'undefined') {
- key.iv = entry.attributes.IV;
- }
- },
- 'media-sequence'() {
- if (!isFinite(entry.number)) {
- this.trigger('warn', {
- message: 'ignoring invalid media sequence: ' + entry.number
- });
- return;
- }
- this.manifest.mediaSequence = entry.number;
- },
- 'discontinuity-sequence'() {
- if (!isFinite(entry.number)) {
- this.trigger('warn', {
- message: 'ignoring invalid discontinuity sequence: ' + entry.number
- });
- return;
- }
- this.manifest.discontinuitySequence = entry.number;
- currentTimeline = entry.number;
- },
- 'playlist-type'() {
- if (!/VOD|EVENT/.test(entry.playlistType)) {
- this.trigger('warn', {
- message: 'ignoring unknown playlist type: ' + entry.playlist
- });
- return;
- }
- this.manifest.playlistType = entry.playlistType;
- },
- map() {
- currentMap = {};
- if (entry.uri) {
- currentMap.uri = entry.uri;
- }
- if (entry.byterange) {
- currentMap.byterange = entry.byterange;
- }
- if (key) {
- currentMap.key = key;
- }
- },
- 'stream-inf'() {
- this.manifest.playlists = uris;
- this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
- if (!entry.attributes) {
- this.trigger('warn', {
- message: 'ignoring empty stream-inf attributes'
- });
- return;
- }
- if (!currentUri.attributes) {
- currentUri.attributes = {};
- }
- _extends$1(currentUri.attributes, entry.attributes);
- },
- media() {
- this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
- if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {
- this.trigger('warn', {
- message: 'ignoring incomplete or missing media group'
- });
- return;
- } // find the media group, creating defaults as necessary
-
- const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];
- mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};
- mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata
-
- rendition = {
- default: /yes/i.test(entry.attributes.DEFAULT)
- };
- if (rendition.default) {
- rendition.autoselect = true;
- } else {
- rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);
- }
- if (entry.attributes.LANGUAGE) {
- rendition.language = entry.attributes.LANGUAGE;
- }
- if (entry.attributes.URI) {
- rendition.uri = entry.attributes.URI;
- }
- if (entry.attributes['INSTREAM-ID']) {
- rendition.instreamId = entry.attributes['INSTREAM-ID'];
- }
- if (entry.attributes.CHARACTERISTICS) {
- rendition.characteristics = entry.attributes.CHARACTERISTICS;
- }
- if (entry.attributes.FORCED) {
- rendition.forced = /yes/i.test(entry.attributes.FORCED);
- } // insert the new rendition
-
- mediaGroup[entry.attributes.NAME] = rendition;
- },
- discontinuity() {
- currentTimeline += 1;
- currentUri.discontinuity = true;
- this.manifest.discontinuityStarts.push(uris.length);
- },
- 'program-date-time'() {
- if (typeof this.manifest.dateTimeString === 'undefined') {
- // PROGRAM-DATE-TIME is a media-segment tag, but for backwards
- // compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag
- // to the manifest object
- // TODO: Consider removing this in future major version
- this.manifest.dateTimeString = entry.dateTimeString;
- this.manifest.dateTimeObject = entry.dateTimeObject;
- }
- currentUri.dateTimeString = entry.dateTimeString;
- currentUri.dateTimeObject = entry.dateTimeObject;
- const {
- lastProgramDateTime
- } = this;
- this.lastProgramDateTime = new Date(entry.dateTimeString).getTime(); // We should extrapolate Program Date Time backward only during first program date time occurrence.
- // Once we have at least one program date time point, we can always extrapolate it forward using lastProgramDateTime reference.
-
- if (lastProgramDateTime === null) {
- // Extrapolate Program Date Time backward
- // Since it is first program date time occurrence we're assuming that
- // all this.manifest.segments have no program date time info
- this.manifest.segments.reduceRight((programDateTime, segment) => {
- segment.programDateTime = programDateTime - segment.duration * 1000;
- return segment.programDateTime;
- }, this.lastProgramDateTime);
- }
- },
- targetduration() {
- if (!isFinite(entry.duration) || entry.duration < 0) {
- this.trigger('warn', {
- message: 'ignoring invalid target duration: ' + entry.duration
- });
- return;
- }
- this.manifest.targetDuration = entry.duration;
- setHoldBack.call(this, this.manifest);
- },
- start() {
- if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {
- this.trigger('warn', {
- message: 'ignoring start declaration without appropriate attribute list'
- });
- return;
- }
- this.manifest.start = {
- timeOffset: entry.attributes['TIME-OFFSET'],
- precise: entry.attributes.PRECISE
- };
- },
- 'cue-out'() {
- currentUri.cueOut = entry.data;
- },
- 'cue-out-cont'() {
- currentUri.cueOutCont = entry.data;
- },
- 'cue-in'() {
- currentUri.cueIn = entry.data;
- },
- 'skip'() {
- this.manifest.skip = camelCaseKeys(entry.attributes);
- this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);
- },
- 'part'() {
- hasParts = true; // parts are always specifed before a segment
-
- const segmentIndex = this.manifest.segments.length;
- const part = camelCaseKeys(entry.attributes);
- currentUri.parts = currentUri.parts || [];
- currentUri.parts.push(part);
- if (part.byterange) {
- if (!part.byterange.hasOwnProperty('offset')) {
- part.byterange.offset = lastPartByterangeEnd;
- }
- lastPartByterangeEnd = part.byterange.offset + part.byterange.length;
- }
- const partIndex = currentUri.parts.length - 1;
- this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);
- if (this.manifest.renditionReports) {
- this.manifest.renditionReports.forEach((r, i) => {
- if (!r.hasOwnProperty('lastPart')) {
- this.trigger('warn', {
- message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`
- });
- }
- });
- }
- },
- 'server-control'() {
- const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);
- if (!attrs.hasOwnProperty('canBlockReload')) {
- attrs.canBlockReload = false;
- this.trigger('info', {
- message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'
- });
- }
- setHoldBack.call(this, this.manifest);
- if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {
- this.trigger('warn', {
- message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'
- });
- }
- },
- 'preload-hint'() {
- // parts are always specifed before a segment
- const segmentIndex = this.manifest.segments.length;
- const hint = camelCaseKeys(entry.attributes);
- const isPart = hint.type && hint.type === 'PART';
- currentUri.preloadHints = currentUri.preloadHints || [];
- currentUri.preloadHints.push(hint);
- if (hint.byterange) {
- if (!hint.byterange.hasOwnProperty('offset')) {
- // use last part byterange end or zero if not a part.
- hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;
- if (isPart) {
- lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;
- }
- }
- }
- const index = currentUri.preloadHints.length - 1;
- this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);
- if (!hint.type) {
- return;
- } // search through all preload hints except for the current one for
- // a duplicate type.
-
- for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {
- const otherHint = currentUri.preloadHints[i];
- if (!otherHint.type) {
- continue;
- }
- if (otherHint.type === hint.type) {
- this.trigger('warn', {
- message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`
- });
- }
- }
- },
- 'rendition-report'() {
- const report = camelCaseKeys(entry.attributes);
- this.manifest.renditionReports = this.manifest.renditionReports || [];
- this.manifest.renditionReports.push(report);
- const index = this.manifest.renditionReports.length - 1;
- const required = ['LAST-MSN', 'URI'];
- if (hasParts) {
- required.push('LAST-PART');
- }
- this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);
- },
- 'part-inf'() {
- this.manifest.partInf = camelCaseKeys(entry.attributes);
- this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);
- if (this.manifest.partInf.partTarget) {
- this.manifest.partTargetDuration = this.manifest.partInf.partTarget;
- }
- setHoldBack.call(this, this.manifest);
- },
- 'daterange'() {
- this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));
- const index = this.manifest.dateRanges.length - 1;
- this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);
- const dateRange = this.manifest.dateRanges[index];
- if (dateRange.endDate && dateRange.startDate && new Date(dateRange.endDate) < new Date(dateRange.startDate)) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'
- });
- }
- if (dateRange.duration && dateRange.duration < 0) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE DURATION must not be negative'
- });
- }
- if (dateRange.plannedDuration && dateRange.plannedDuration < 0) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'
- });
- }
- const endOnNextYes = !!dateRange.endOnNext;
- if (endOnNextYes && !dateRange.class) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'
- });
- }
- if (endOnNextYes && (dateRange.duration || dateRange.endDate)) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'
- });
- }
- if (dateRange.duration && dateRange.endDate) {
- const startDate = dateRange.startDate;
- const newDateInSeconds = startDate.getTime() + dateRange.duration * 1000;
- this.manifest.dateRanges[index].endDate = new Date(newDateInSeconds);
- }
- if (!dateRangeTags[dateRange.id]) {
- dateRangeTags[dateRange.id] = dateRange;
- } else {
- for (const attribute in dateRangeTags[dateRange.id]) {
- if (!!dateRange[attribute] && JSON.stringify(dateRangeTags[dateRange.id][attribute]) !== JSON.stringify(dateRange[attribute])) {
- this.trigger('warn', {
- message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes values'
- });
- break;
- }
- } // if tags with the same ID do not have conflicting attributes, merge them
-
- const dateRangeWithSameId = this.manifest.dateRanges.findIndex(dateRangeToFind => dateRangeToFind.id === dateRange.id);
- this.manifest.dateRanges[dateRangeWithSameId] = _extends$1(this.manifest.dateRanges[dateRangeWithSameId], dateRange);
- dateRangeTags[dateRange.id] = _extends$1(dateRangeTags[dateRange.id], dateRange); // after merging, delete the duplicate dateRange that was added last
-
- this.manifest.dateRanges.pop();
- }
- },
- 'independent-segments'() {
- this.manifest.independentSegments = true;
- },
- 'content-steering'() {
- this.manifest.contentSteering = camelCaseKeys(entry.attributes);
- this.warnOnMissingAttributes_('#EXT-X-CONTENT-STEERING', entry.attributes, ['SERVER-URI']);
- }
- })[entry.tagType] || noop).call(self);
- },
- uri() {
- currentUri.uri = entry.uri;
- uris.push(currentUri); // if no explicit duration was declared, use the target duration
-
- if (this.manifest.targetDuration && !('duration' in currentUri)) {
- this.trigger('warn', {
- message: 'defaulting segment duration to the target duration'
- });
- currentUri.duration = this.manifest.targetDuration;
- } // annotate with encryption information, if necessary
-
- if (key) {
- currentUri.key = key;
- }
- currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary
-
- if (currentMap) {
- currentUri.map = currentMap;
- } // reset the last byterange end as it needs to be 0 between parts
-
- lastPartByterangeEnd = 0; // Once we have at least one program date time we can always extrapolate it forward
-
- if (this.lastProgramDateTime !== null) {
- currentUri.programDateTime = this.lastProgramDateTime;
- this.lastProgramDateTime += currentUri.duration * 1000;
- } // prepare for the next URI
-
- currentUri = {};
- },
- comment() {// comments are not important for playback
- },
- custom() {
- // if this is segment-level data attach the output to the segment
- if (entry.segment) {
- currentUri.custom = currentUri.custom || {};
- currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object
- } else {
- this.manifest.custom = this.manifest.custom || {};
- this.manifest.custom[entry.customType] = entry.data;
- }
- }
- })[entry.type].call(self);
- });
- }
- warnOnMissingAttributes_(identifier, attributes, required) {
- const missing = [];
- required.forEach(function (key) {
- if (!attributes.hasOwnProperty(key)) {
- missing.push(key);
- }
- });
- if (missing.length) {
- this.trigger('warn', {
- message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`
- });
- }
- }
- /**
- * Parse the input string and update the manifest object.
- *
- * @param {string} chunk a potentially incomplete portion of the manifest
- */
-
- push(chunk) {
- this.lineStream.push(chunk);
- }
- /**
- * Flush any remaining input. This can be handy if the last line of an M3U8
- * manifest did not contain a trailing newline but the file has been
- * completely received.
- */
-
- end() {
- // flush any buffered input
- this.lineStream.push('\n');
- if (this.manifest.dateRanges.length && this.lastProgramDateTime === null) {
- this.trigger('warn', {
- message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'
- });
- }
- this.lastProgramDateTime = null;
- this.trigger('end');
- }
- /**
- * Add an additional parser for non-standard tags
- *
- * @param {Object} options a map of options for the added parser
- * @param {RegExp} options.expression a regular expression to match the custom header
- * @param {string} options.customType the custom type to register to the output
- * @param {Function} [options.dataParser] function to parse the line into an object
- * @param {boolean} [options.segment] should tag data be attached to the segment object
- */
-
- addParser(options) {
- this.parseStream.addParser(options);
- }
- /**
- * Add a custom header mapper
- *
- * @param {Object} options
- * @param {RegExp} options.expression a regular expression to match the custom header
- * @param {Function} options.map function to translate tag into a different tag
- */
-
- addTagMapper(options) {
- this.parseStream.addTagMapper(options);
- }
- }
-
- var regexs = {
- // to determine mime types
- mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,
- webm: /^(vp0?[89]|av0?1|opus|vorbis)/,
- ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,
- // to determine if a codec is audio or video
- video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,
- audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,
- text: /^(stpp.ttml.im1t)/,
- // mux.js support regex
- muxerVideo: /^(avc0?1)/,
- muxerAudio: /^(mp4a)/,
- // match nothing as muxer does not support text right now.
- // there cannot never be a character before the start of a string
- // so this matches nothing.
- muxerText: /a^/
- };
- var mediaTypes = ['video', 'audio', 'text'];
- var upperMediaTypes = ['Video', 'Audio', 'Text'];
- /**
- * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard
- * `avc1.<hhhhhh>`
- *
- * @param {string} codec
- * Codec string to translate
- * @return {string}
- * The translated codec string
- */
-
- var translateLegacyCodec = function translateLegacyCodec(codec) {
- if (!codec) {
- return codec;
- }
- return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) {
- var profileHex = ('00' + Number(profile).toString(16)).slice(-2);
- var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);
- return 'avc1.' + profileHex + '00' + avcLevelHex;
- });
- };
- /**
- * @typedef {Object} ParsedCodecInfo
- * @property {number} codecCount
- * Number of codecs parsed
- * @property {string} [videoCodec]
- * Parsed video codec (if found)
- * @property {string} [videoObjectTypeIndicator]
- * Video object type indicator (if found)
- * @property {string|null} audioProfile
- * Audio profile
- */
-
- /**
- * Parses a codec string to retrieve the number of codecs specified, the video codec and
- * object type indicator, and the audio profile.
- *
- * @param {string} [codecString]
- * The codec string to parse
- * @return {ParsedCodecInfo}
- * Parsed codec info
- */
-
- var parseCodecs = function parseCodecs(codecString) {
- if (codecString === void 0) {
- codecString = '';
- }
- var codecs = codecString.split(',');
- var result = [];
- codecs.forEach(function (codec) {
- codec = codec.trim();
- var codecType;
- mediaTypes.forEach(function (name) {
- var match = regexs[name].exec(codec.toLowerCase());
- if (!match || match.length <= 1) {
- return;
- }
- codecType = name; // maintain codec case
-
- var type = codec.substring(0, match[1].length);
- var details = codec.replace(type, '');
- result.push({
- type: type,
- details: details,
- mediaType: name
- });
- });
- if (!codecType) {
- result.push({
- type: codec,
- details: '',
- mediaType: 'unknown'
- });
- }
- });
- return result;
- };
- /**
- * Returns a ParsedCodecInfo object for the default alternate audio playlist if there is
- * a default alternate audio playlist for the provided audio group.
- *
- * @param {Object} master
- * The master playlist
- * @param {string} audioGroupId
- * ID of the audio group for which to find the default codec info
- * @return {ParsedCodecInfo}
- * Parsed codec info
- */
-
- var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {
- if (!master.mediaGroups.AUDIO || !audioGroupId) {
- return null;
- }
- var audioGroup = master.mediaGroups.AUDIO[audioGroupId];
- if (!audioGroup) {
- return null;
- }
- for (var name in audioGroup) {
- var audioType = audioGroup[name];
- if (audioType.default && audioType.playlists) {
- // codec should be the same for all playlists within the audio type
- return parseCodecs(audioType.playlists[0].attributes.CODECS);
- }
- }
- return null;
- };
- var isAudioCodec = function isAudioCodec(codec) {
- if (codec === void 0) {
- codec = '';
- }
- return regexs.audio.test(codec.trim().toLowerCase());
- };
- var isTextCodec = function isTextCodec(codec) {
- if (codec === void 0) {
- codec = '';
- }
- return regexs.text.test(codec.trim().toLowerCase());
- };
- var getMimeForCodec = function getMimeForCodec(codecString) {
- if (!codecString || typeof codecString !== 'string') {
- return;
- }
- var codecs = codecString.toLowerCase().split(',').map(function (c) {
- return translateLegacyCodec(c.trim());
- }); // default to video type
-
- var type = 'video'; // only change to audio type if the only codec we have is
- // audio
-
- if (codecs.length === 1 && isAudioCodec(codecs[0])) {
- type = 'audio';
- } else if (codecs.length === 1 && isTextCodec(codecs[0])) {
- // text uses application/<container> for now
- type = 'application';
- } // default the container to mp4
-
- var container = 'mp4'; // every codec must be able to go into the container
- // for that container to be the correct one
-
- if (codecs.every(function (c) {
- return regexs.mp4.test(c);
- })) {
- container = 'mp4';
- } else if (codecs.every(function (c) {
- return regexs.webm.test(c);
- })) {
- container = 'webm';
- } else if (codecs.every(function (c) {
- return regexs.ogg.test(c);
- })) {
- container = 'ogg';
- }
- return type + "/" + container + ";codecs=\"" + codecString + "\"";
- };
- var browserSupportsCodec = function browserSupportsCodec(codecString) {
- if (codecString === void 0) {
- codecString = '';
- }
- return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;
- };
- var muxerSupportsCodec = function muxerSupportsCodec(codecString) {
- if (codecString === void 0) {
- codecString = '';
- }
- return codecString.toLowerCase().split(',').every(function (codec) {
- codec = codec.trim(); // any match is supported.
-
- for (var i = 0; i < upperMediaTypes.length; i++) {
- var type = upperMediaTypes[i];
- if (regexs["muxer" + type].test(codec)) {
- return true;
- }
- }
- return false;
- });
- };
- var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';
- var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';
-
- var MPEGURL_REGEX = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i;
- var DASH_REGEX = /^application\/dash\+xml/i;
- /**
- * Returns a string that describes the type of source based on a video source object's
- * media type.
- *
- * @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}
- *
- * @param {string} type
- * Video source object media type
- * @return {('hls'|'dash'|'vhs-json'|null)}
- * VHS source type string
- */
-
- var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {
- if (MPEGURL_REGEX.test(type)) {
- return 'hls';
- }
- if (DASH_REGEX.test(type)) {
- return 'dash';
- } // Denotes the special case of a manifest object passed to http-streaming instead of a
- // source URL.
- //
- // See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.
- //
- // In this case, vnd stands for vendor, video.js for the organization, VHS for this
- // project, and the +json suffix identifies the structure of the media type.
-
- if (type === 'application/vnd.videojs.vhs+json') {
- return 'vhs-json';
- }
- return null;
- };
-
- // const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));
- // we used to do this with log2 but BigInt does not support builtin math
- // Math.ceil(log2(x));
-
- var countBits = function countBits(x) {
- return x.toString(2).length;
- }; // count the number of whole bytes it would take to represent a number
-
- var countBytes = function countBytes(x) {
- return Math.ceil(countBits(x) / 8);
- };
- var isArrayBufferView = function isArrayBufferView(obj) {
- if (ArrayBuffer.isView === 'function') {
- return ArrayBuffer.isView(obj);
- }
- return obj && obj.buffer instanceof ArrayBuffer;
- };
- var isTypedArray = function isTypedArray(obj) {
- return isArrayBufferView(obj);
- };
- var toUint8 = function toUint8(bytes) {
- if (bytes instanceof Uint8Array) {
- return bytes;
- }
- if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {
- // any non-number or NaN leads to empty uint8array
- // eslint-disable-next-line
- if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {
- bytes = 0;
- } else {
- bytes = [bytes];
- }
- }
- return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);
- };
- var BigInt = window.BigInt || Number;
- var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
- (function () {
- var a = new Uint16Array([0xFFCC]);
- var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
- if (b[0] === 0xFF) {
- return 'big';
- }
- if (b[0] === 0xCC) {
- return 'little';
- }
- return 'unknown';
- })();
- var bytesToNumber = function bytesToNumber(bytes, _temp) {
- var _ref = _temp === void 0 ? {} : _temp,
- _ref$signed = _ref.signed,
- signed = _ref$signed === void 0 ? false : _ref$signed,
- _ref$le = _ref.le,
- le = _ref$le === void 0 ? false : _ref$le;
- bytes = toUint8(bytes);
- var fn = le ? 'reduce' : 'reduceRight';
- var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];
- var number = obj.call(bytes, function (total, byte, i) {
- var exponent = le ? i : Math.abs(i + 1 - bytes.length);
- return total + BigInt(byte) * BYTE_TABLE[exponent];
- }, BigInt(0));
- if (signed) {
- var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);
- number = BigInt(number);
- if (number > max) {
- number -= max;
- number -= max;
- number -= BigInt(2);
- }
- }
- return Number(number);
- };
- var numberToBytes = function numberToBytes(number, _temp2) {
- var _ref2 = _temp2 === void 0 ? {} : _temp2,
- _ref2$le = _ref2.le,
- le = _ref2$le === void 0 ? false : _ref2$le;
-
- // eslint-disable-next-line
- if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {
- number = 0;
- }
- number = BigInt(number);
- var byteCount = countBytes(number);
- var bytes = new Uint8Array(new ArrayBuffer(byteCount));
- for (var i = 0; i < byteCount; i++) {
- var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);
- bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));
- if (number < 0) {
- bytes[byteIndex] = Math.abs(~bytes[byteIndex]);
- bytes[byteIndex] -= i === 0 ? 1 : 2;
- }
- }
- return bytes;
- };
- var stringToBytes = function stringToBytes(string, stringIsBytes) {
- if (typeof string !== 'string' && string && typeof string.toString === 'function') {
- string = string.toString();
- }
- if (typeof string !== 'string') {
- return new Uint8Array();
- } // If the string already is bytes, we don't have to do this
- // otherwise we do this so that we split multi length characters
- // into individual bytes
-
- if (!stringIsBytes) {
- string = unescape(encodeURIComponent(string));
- }
- var view = new Uint8Array(string.length);
- for (var i = 0; i < string.length; i++) {
- view[i] = string.charCodeAt(i);
- }
- return view;
- };
- var concatTypedArrays = function concatTypedArrays() {
- for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {
- buffers[_key] = arguments[_key];
- }
- buffers = buffers.filter(function (b) {
- return b && (b.byteLength || b.length) && typeof b !== 'string';
- });
- if (buffers.length <= 1) {
- // for 0 length we will return empty uint8
- // for 1 length we return the first uint8
- return toUint8(buffers[0]);
- }
- var totalLen = buffers.reduce(function (total, buf, i) {
- return total + (buf.byteLength || buf.length);
- }, 0);
- var tempBuffer = new Uint8Array(totalLen);
- var offset = 0;
- buffers.forEach(function (buf) {
- buf = toUint8(buf);
- tempBuffer.set(buf, offset);
- offset += buf.byteLength;
- });
- return tempBuffer;
- };
- /**
- * Check if the bytes "b" are contained within bytes "a".
- *
- * @param {Uint8Array|Array} a
- * Bytes to check in
- *
- * @param {Uint8Array|Array} b
- * Bytes to check for
- *
- * @param {Object} options
- * options
- *
- * @param {Array|Uint8Array} [offset=0]
- * offset to use when looking at bytes in a
- *
- * @param {Array|Uint8Array} [mask=[]]
- * mask to use on bytes before comparison.
- *
- * @return {boolean}
- * If all bytes in b are inside of a, taking into account
- * bit masks.
- */
-
- var bytesMatch = function bytesMatch(a, b, _temp3) {
- var _ref3 = _temp3 === void 0 ? {} : _temp3,
- _ref3$offset = _ref3.offset,
- offset = _ref3$offset === void 0 ? 0 : _ref3$offset,
- _ref3$mask = _ref3.mask,
- mask = _ref3$mask === void 0 ? [] : _ref3$mask;
- a = toUint8(a);
- b = toUint8(b); // ie 11 does not support uint8 every
-
- var fn = b.every ? b.every : Array.prototype.every;
- return b.length && a.length - offset >= b.length &&
- // ie 11 doesn't support every on uin8
- fn.call(b, function (bByte, i) {
- var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];
- return bByte === aByte;
- });
- };
-
- /**
- * Loops through all supported media groups in master and calls the provided
- * callback for each group
- *
- * @param {Object} master
- * The parsed master manifest object
- * @param {string[]} groups
- * The media groups to call the callback for
- * @param {Function} callback
- * Callback to call for each media group
- */
- var forEachMediaGroup$1 = function forEachMediaGroup(master, groups, callback) {
- groups.forEach(function (mediaType) {
- for (var groupKey in master.mediaGroups[mediaType]) {
- for (var labelKey in master.mediaGroups[mediaType][groupKey]) {
- var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];
- callback(mediaProperties, mediaType, groupKey, labelKey);
- }
- }
- });
- };
-
- var atob = function atob(s) {
- return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
- };
- function decodeB64ToUint8Array(b64Text) {
- var decodedString = atob(b64Text);
- var array = new Uint8Array(decodedString.length);
- for (var i = 0; i < decodedString.length; i++) {
- array[i] = decodedString.charCodeAt(i);
- }
- return array;
- }
-
- /**
- * Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.
- *
- * Works with anything that has a `length` property and index access properties, including NodeList.
- *
- * @template {unknown} T
- * @param {Array<T> | ({length:number, [number]: T})} list
- * @param {function (item: T, index: number, list:Array<T> | ({length:number, [number]: T})):boolean} predicate
- * @param {Partial<Pick<ArrayConstructor['prototype'], 'find'>>?} ac `Array.prototype` by default,
- * allows injecting a custom implementation in tests
- * @returns {T | undefined}
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
- * @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find
- */
- function find$1(list, predicate, ac) {
- if (ac === undefined) {
- ac = Array.prototype;
- }
- if (list && typeof ac.find === 'function') {
- return ac.find.call(list, predicate);
- }
- for (var i = 0; i < list.length; i++) {
- if (Object.prototype.hasOwnProperty.call(list, i)) {
- var item = list[i];
- if (predicate.call(undefined, item, i, list)) {
- return item;
- }
- }
- }
- }
-
- /**
- * "Shallow freezes" an object to render it immutable.
- * Uses `Object.freeze` if available,
- * otherwise the immutability is only in the type.
- *
- * Is used to create "enum like" objects.
- *
- * @template T
- * @param {T} object the object to freeze
- * @param {Pick<ObjectConstructor, 'freeze'> = Object} oc `Object` by default,
- * allows to inject custom object constructor for tests
- * @returns {Readonly<T>}
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
- */
- function freeze(object, oc) {
- if (oc === undefined) {
- oc = Object;
- }
- return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;
- }
-
- /**
- * Since we can not rely on `Object.assign` we provide a simplified version
- * that is sufficient for our needs.
- *
- * @param {Object} target
- * @param {Object | null | undefined} source
- *
- * @returns {Object} target
- * @throws TypeError if target is not an object
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
- * @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign
- */
- function assign(target, source) {
- if (target === null || typeof target !== 'object') {
- throw new TypeError('target is not an object');
- }
- for (var key in source) {
- if (Object.prototype.hasOwnProperty.call(source, key)) {
- target[key] = source[key];
- }
- }
- return target;
- }
-
- /**
- * All mime types that are allowed as input to `DOMParser.parseFromString`
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN
- * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec
- * @see DOMParser.prototype.parseFromString
- */
- var MIME_TYPE = freeze({
- /**
- * `text/html`, the only mime type that triggers treating an XML document as HTML.
- *
- * @see DOMParser.SupportedType.isHTML
- * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
- * @see https://en.wikipedia.org/wiki/HTML Wikipedia
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
- * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec
- */
- HTML: 'text/html',
- /**
- * Helper method to check a mime type if it indicates an HTML document
- *
- * @param {string} [value]
- * @returns {boolean}
- *
- * @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
- * @see https://en.wikipedia.org/wiki/HTML Wikipedia
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
- * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring */
- isHTML: function (value) {
- return value === MIME_TYPE.HTML;
- },
- /**
- * `application/xml`, the standard mime type for XML documents.
- *
- * @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration
- * @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303
- * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
- */
- XML_APPLICATION: 'application/xml',
- /**
- * `text/html`, an alias for `application/xml`.
- *
- * @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303
- * @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration
- * @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
- */
- XML_TEXT: 'text/xml',
- /**
- * `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,
- * but is parsed as an XML document.
- *
- * @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration
- * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec
- * @see https://en.wikipedia.org/wiki/XHTML Wikipedia
- */
- XML_XHTML_APPLICATION: 'application/xhtml+xml',
- /**
- * `image/svg+xml`,
- *
- * @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration
- * @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1
- * @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia
- */
- XML_SVG_IMAGE: 'image/svg+xml'
- });
-
- /**
- * Namespaces that are used in this code base.
- *
- * @see http://www.w3.org/TR/REC-xml-names
- */
- var NAMESPACE$3 = freeze({
- /**
- * The XHTML namespace.
- *
- * @see http://www.w3.org/1999/xhtml
- */
- HTML: 'http://www.w3.org/1999/xhtml',
- /**
- * Checks if `uri` equals `NAMESPACE.HTML`.
- *
- * @param {string} [uri]
- *
- * @see NAMESPACE.HTML
- */
- isHTML: function (uri) {
- return uri === NAMESPACE$3.HTML;
- },
- /**
- * The SVG namespace.
- *
- * @see http://www.w3.org/2000/svg
- */
- SVG: 'http://www.w3.org/2000/svg',
- /**
- * The `xml:` namespace.
- *
- * @see http://www.w3.org/XML/1998/namespace
- */
- XML: 'http://www.w3.org/XML/1998/namespace',
- /**
- * The `xmlns:` namespace
- *
- * @see https://www.w3.org/2000/xmlns/
- */
- XMLNS: 'http://www.w3.org/2000/xmlns/'
- });
- var assign_1 = assign;
- var find_1 = find$1;
- var freeze_1 = freeze;
- var MIME_TYPE_1 = MIME_TYPE;
- var NAMESPACE_1 = NAMESPACE$3;
- var conventions = {
- assign: assign_1,
- find: find_1,
- freeze: freeze_1,
- MIME_TYPE: MIME_TYPE_1,
- NAMESPACE: NAMESPACE_1
- };
-
- var find = conventions.find;
- var NAMESPACE$2 = conventions.NAMESPACE;
-
- /**
- * A prerequisite for `[].filter`, to drop elements that are empty
- * @param {string} input
- * @returns {boolean}
- */
- function notEmptyString(input) {
- return input !== '';
- }
- /**
- * @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace
- * @see https://infra.spec.whatwg.org/#ascii-whitespace
- *
- * @param {string} input
- * @returns {string[]} (can be empty)
- */
- function splitOnASCIIWhitespace(input) {
- // U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
- return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [];
- }
-
- /**
- * Adds element as a key to current if it is not already present.
- *
- * @param {Record<string, boolean | undefined>} current
- * @param {string} element
- * @returns {Record<string, boolean | undefined>}
- */
- function orderedSetReducer(current, element) {
- if (!current.hasOwnProperty(element)) {
- current[element] = true;
- }
- return current;
- }
-
- /**
- * @see https://infra.spec.whatwg.org/#ordered-set
- * @param {string} input
- * @returns {string[]}
- */
- function toOrderedSet(input) {
- if (!input) return [];
- var list = splitOnASCIIWhitespace(input);
- return Object.keys(list.reduce(orderedSetReducer, {}));
- }
-
- /**
- * Uses `list.indexOf` to implement something like `Array.prototype.includes`,
- * which we can not rely on being available.
- *
- * @param {any[]} list
- * @returns {function(any): boolean}
- */
- function arrayIncludes(list) {
- return function (element) {
- return list && list.indexOf(element) !== -1;
- };
- }
- function copy(src, dest) {
- for (var p in src) {
- if (Object.prototype.hasOwnProperty.call(src, p)) {
- dest[p] = src[p];
- }
- }
- }
-
- /**
- ^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
- ^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
- */
- function _extends(Class, Super) {
- var pt = Class.prototype;
- if (!(pt instanceof Super)) {
- function t() {}
- t.prototype = Super.prototype;
- t = new t();
- copy(pt, t);
- Class.prototype = pt = t;
- }
- if (pt.constructor != Class) {
- if (typeof Class != 'function') {
- console.error("unknown Class:" + Class);
- }
- pt.constructor = Class;
- }
- }
-
- // Node Types
- var NodeType = {};
- var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;
- var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;
- var TEXT_NODE = NodeType.TEXT_NODE = 3;
- var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;
- var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;
- var ENTITY_NODE = NodeType.ENTITY_NODE = 6;
- var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
- var COMMENT_NODE = NodeType.COMMENT_NODE = 8;
- var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;
- var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;
- var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;
- var NOTATION_NODE = NodeType.NOTATION_NODE = 12;
-
- // ExceptionCode
- var ExceptionCode = {};
- var ExceptionMessage = {};
- ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = "Index size error", 1);
- ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = "DOMString size error", 2);
- var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = "Hierarchy request error", 3);
- ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = "Wrong document", 4);
- ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = "Invalid character", 5);
- ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = "No data allowed", 6);
- ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = "No modification allowed", 7);
- var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = "Not found", 8);
- ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = "Not supported", 9);
- var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = "Attribute in use", 10);
- //level2
- ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = "Invalid state", 11);
- ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = "Syntax error", 12);
- ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = "Invalid modification", 13);
- ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = "Invalid namespace", 14);
- ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = "Invalid access", 15);
-
- /**
- * DOM Level 2
- * Object DOMException
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
- * @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
- */
- function DOMException(code, message) {
- if (message instanceof Error) {
- var error = message;
- } else {
- error = this;
- Error.call(this, ExceptionMessage[code]);
- this.message = ExceptionMessage[code];
- if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
- }
- error.code = code;
- if (message) this.message = this.message + ": " + message;
- return error;
- }
- DOMException.prototype = Error.prototype;
- copy(ExceptionCode, DOMException);
-
- /**
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
- * The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
- * The items in the NodeList are accessible via an integral index, starting from 0.
- */
- function NodeList() {}
- NodeList.prototype = {
- /**
- * The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
- * @standard level1
- */
- length: 0,
- /**
- * Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
- * @standard level1
- * @param index unsigned long
- * Index into the collection.
- * @return Node
- * The node at the indexth position in the NodeList, or null if that is not a valid index.
- */
- item: function (index) {
- return index >= 0 && index < this.length ? this[index] : null;
- },
- toString: function (isHTML, nodeFilter) {
- for (var buf = [], i = 0; i < this.length; i++) {
- serializeToString(this[i], buf, isHTML, nodeFilter);
- }
- return buf.join('');
- },
- /**
- * @private
- * @param {function (Node):boolean} predicate
- * @returns {Node[]}
- */
- filter: function (predicate) {
- return Array.prototype.filter.call(this, predicate);
- },
- /**
- * @private
- * @param {Node} item
- * @returns {number}
- */
- indexOf: function (item) {
- return Array.prototype.indexOf.call(this, item);
- }
- };
- function LiveNodeList(node, refresh) {
- this._node = node;
- this._refresh = refresh;
- _updateLiveList(this);
- }
- function _updateLiveList(list) {
- var inc = list._node._inc || list._node.ownerDocument._inc;
- if (list._inc !== inc) {
- var ls = list._refresh(list._node);
- __set__(list, 'length', ls.length);
- if (!list.$$length || ls.length < list.$$length) {
- for (var i = ls.length; (i in list); i++) {
- if (Object.prototype.hasOwnProperty.call(list, i)) {
- delete list[i];
- }
- }
- }
- copy(ls, list);
- list._inc = inc;
- }
- }
- LiveNodeList.prototype.item = function (i) {
- _updateLiveList(this);
- return this[i] || null;
- };
- _extends(LiveNodeList, NodeList);
-
- /**
- * Objects implementing the NamedNodeMap interface are used
- * to represent collections of nodes that can be accessed by name.
- * Note that NamedNodeMap does not inherit from NodeList;
- * NamedNodeMaps are not maintained in any particular order.
- * Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,
- * but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
- * and does not imply that the DOM specifies an order to these Nodes.
- * NamedNodeMap objects in the DOM are live.
- * used for attributes or DocumentType entities
- */
- function NamedNodeMap() {}
- function _findNodeIndex(list, node) {
- var i = list.length;
- while (i--) {
- if (list[i] === node) {
- return i;
- }
- }
- }
- function _addNamedNode(el, list, newAttr, oldAttr) {
- if (oldAttr) {
- list[_findNodeIndex(list, oldAttr)] = newAttr;
- } else {
- list[list.length++] = newAttr;
- }
- if (el) {
- newAttr.ownerElement = el;
- var doc = el.ownerDocument;
- if (doc) {
- oldAttr && _onRemoveAttribute(doc, el, oldAttr);
- _onAddAttribute(doc, el, newAttr);
- }
- }
- }
- function _removeNamedNode(el, list, attr) {
- //console.log('remove attr:'+attr)
- var i = _findNodeIndex(list, attr);
- if (i >= 0) {
- var lastIndex = list.length - 1;
- while (i < lastIndex) {
- list[i] = list[++i];
- }
- list.length = lastIndex;
- if (el) {
- var doc = el.ownerDocument;
- if (doc) {
- _onRemoveAttribute(doc, el, attr);
- attr.ownerElement = null;
- }
- }
- } else {
- throw new DOMException(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));
- }
- }
- NamedNodeMap.prototype = {
- length: 0,
- item: NodeList.prototype.item,
- getNamedItem: function (key) {
- // if(key.indexOf(':')>0 || key == 'xmlns'){
- // return null;
- // }
- //console.log()
- var i = this.length;
- while (i--) {
- var attr = this[i];
- //console.log(attr.nodeName,key)
- if (attr.nodeName == key) {
- return attr;
- }
- }
- },
- setNamedItem: function (attr) {
- var el = attr.ownerElement;
- if (el && el != this._ownerElement) {
- throw new DOMException(INUSE_ATTRIBUTE_ERR);
- }
- var oldAttr = this.getNamedItem(attr.nodeName);
- _addNamedNode(this._ownerElement, this, attr, oldAttr);
- return oldAttr;
- },
- /* returns Node */
- setNamedItemNS: function (attr) {
- // raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
- var el = attr.ownerElement,
- oldAttr;
- if (el && el != this._ownerElement) {
- throw new DOMException(INUSE_ATTRIBUTE_ERR);
- }
- oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);
- _addNamedNode(this._ownerElement, this, attr, oldAttr);
- return oldAttr;
- },
- /* returns Node */
- removeNamedItem: function (key) {
- var attr = this.getNamedItem(key);
- _removeNamedNode(this._ownerElement, this, attr);
- return attr;
- },
- // raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
-
- //for level2
- removeNamedItemNS: function (namespaceURI, localName) {
- var attr = this.getNamedItemNS(namespaceURI, localName);
- _removeNamedNode(this._ownerElement, this, attr);
- return attr;
- },
- getNamedItemNS: function (namespaceURI, localName) {
- var i = this.length;
- while (i--) {
- var node = this[i];
- if (node.localName == localName && node.namespaceURI == namespaceURI) {
- return node;
- }
- }
- return null;
- }
- };
-
- /**
- * The DOMImplementation interface represents an object providing methods
- * which are not dependent on any particular document.
- * Such an object is returned by the `Document.implementation` property.
- *
- * __The individual methods describe the differences compared to the specs.__
- *
- * @constructor
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
- * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)
- * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
- * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
- * @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
- */
- function DOMImplementation$1() {}
- DOMImplementation$1.prototype = {
- /**
- * The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.
- * The different implementations fairly diverged in what kind of features were reported.
- * The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.
- *
- * @deprecated It is deprecated and modern browsers return true in all cases.
- *
- * @param {string} feature
- * @param {string} [version]
- * @returns {boolean} always true
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
- * @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
- * @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
- */
- hasFeature: function (feature, version) {
- return true;
- },
- /**
- * Creates an XML Document object of the specified type with its document element.
- *
- * __It behaves slightly different from the description in the living standard__:
- * - There is no interface/class `XMLDocument`, it returns a `Document` instance.
- * - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.
- * - this implementation is not validating names or qualified names
- * (when parsing XML strings, the SAX parser takes care of that)
- *
- * @param {string|null} namespaceURI
- * @param {string} qualifiedName
- * @param {DocumentType=null} doctype
- * @returns {Document}
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
- * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)
- * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core
- *
- * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
- * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
- * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
- */
- createDocument: function (namespaceURI, qualifiedName, doctype) {
- var doc = new Document();
- doc.implementation = this;
- doc.childNodes = new NodeList();
- doc.doctype = doctype || null;
- if (doctype) {
- doc.appendChild(doctype);
- }
- if (qualifiedName) {
- var root = doc.createElementNS(namespaceURI, qualifiedName);
- doc.appendChild(root);
- }
- return doc;
- },
- /**
- * Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.
- *
- * __This behavior is slightly different from the in the specs__:
- * - this implementation is not validating names or qualified names
- * (when parsing XML strings, the SAX parser takes care of that)
- *
- * @param {string} qualifiedName
- * @param {string} [publicId]
- * @param {string} [systemId]
- * @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation
- * or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN
- * @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core
- * @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard
- *
- * @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
- * @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
- * @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
- */
- createDocumentType: function (qualifiedName, publicId, systemId) {
- var node = new DocumentType();
- node.name = qualifiedName;
- node.nodeName = qualifiedName;
- node.publicId = publicId || '';
- node.systemId = systemId || '';
- return node;
- }
- };
-
- /**
- * @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
- */
-
- function Node() {}
- Node.prototype = {
- firstChild: null,
- lastChild: null,
- previousSibling: null,
- nextSibling: null,
- attributes: null,
- parentNode: null,
- childNodes: null,
- ownerDocument: null,
- nodeValue: null,
- namespaceURI: null,
- prefix: null,
- localName: null,
- // Modified in DOM Level 2:
- insertBefore: function (newChild, refChild) {
- //raises
- return _insertBefore(this, newChild, refChild);
- },
- replaceChild: function (newChild, oldChild) {
- //raises
- _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
- if (oldChild) {
- this.removeChild(oldChild);
- }
- },
- removeChild: function (oldChild) {
- return _removeChild(this, oldChild);
- },
- appendChild: function (newChild) {
- return this.insertBefore(newChild, null);
- },
- hasChildNodes: function () {
- return this.firstChild != null;
- },
- cloneNode: function (deep) {
- return cloneNode(this.ownerDocument || this, this, deep);
- },
- // Modified in DOM Level 2:
- normalize: function () {
- var child = this.firstChild;
- while (child) {
- var next = child.nextSibling;
- if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {
- this.removeChild(next);
- child.appendData(next.data);
- } else {
- child.normalize();
- child = next;
- }
- }
- },
- // Introduced in DOM Level 2:
- isSupported: function (feature, version) {
- return this.ownerDocument.implementation.hasFeature(feature, version);
- },
- // Introduced in DOM Level 2:
- hasAttributes: function () {
- return this.attributes.length > 0;
- },
- /**
- * Look up the prefix associated to the given namespace URI, starting from this node.
- * **The default namespace declarations are ignored by this method.**
- * See Namespace Prefix Lookup for details on the algorithm used by this method.
- *
- * _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._
- *
- * @param {string | null} namespaceURI
- * @returns {string | null}
- * @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
- * @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
- * @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
- * @see https://github.com/xmldom/xmldom/issues/322
- */
- lookupPrefix: function (namespaceURI) {
- var el = this;
- while (el) {
- var map = el._nsMap;
- //console.dir(map)
- if (map) {
- for (var n in map) {
- if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {
- return n;
- }
- }
- }
- el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
- }
- return null;
- },
- // Introduced in DOM Level 3:
- lookupNamespaceURI: function (prefix) {
- var el = this;
- while (el) {
- var map = el._nsMap;
- //console.dir(map)
- if (map) {
- if (Object.prototype.hasOwnProperty.call(map, prefix)) {
- return map[prefix];
- }
- }
- el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
- }
- return null;
- },
- // Introduced in DOM Level 3:
- isDefaultNamespace: function (namespaceURI) {
- var prefix = this.lookupPrefix(namespaceURI);
- return prefix == null;
- }
- };
- function _xmlEncoder(c) {
- return c == '<' && '&lt;' || c == '>' && '&gt;' || c == '&' && '&amp;' || c == '"' && '&quot;' || '&#' + c.charCodeAt() + ';';
- }
- copy(NodeType, Node);
- copy(NodeType, Node.prototype);
-
- /**
- * @param callback return true for continue,false for break
- * @return boolean true: break visit;
- */
- function _visitNode(node, callback) {
- if (callback(node)) {
- return true;
- }
- if (node = node.firstChild) {
- do {
- if (_visitNode(node, callback)) {
- return true;
- }
- } while (node = node.nextSibling);
- }
- }
- function Document() {
- this.ownerDocument = this;
- }
- function _onAddAttribute(doc, el, newAttr) {
- doc && doc._inc++;
- var ns = newAttr.namespaceURI;
- if (ns === NAMESPACE$2.XMLNS) {
- //update namespace
- el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;
- }
- }
- function _onRemoveAttribute(doc, el, newAttr, remove) {
- doc && doc._inc++;
- var ns = newAttr.namespaceURI;
- if (ns === NAMESPACE$2.XMLNS) {
- //update namespace
- delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];
- }
- }
-
- /**
- * Updates `el.childNodes`, updating the indexed items and it's `length`.
- * Passing `newChild` means it will be appended.
- * Otherwise it's assumed that an item has been removed,
- * and `el.firstNode` and it's `.nextSibling` are used
- * to walk the current list of child nodes.
- *
- * @param {Document} doc
- * @param {Node} el
- * @param {Node} [newChild]
- * @private
- */
- function _onUpdateChild(doc, el, newChild) {
- if (doc && doc._inc) {
- doc._inc++;
- //update childNodes
- var cs = el.childNodes;
- if (newChild) {
- cs[cs.length++] = newChild;
- } else {
- var child = el.firstChild;
- var i = 0;
- while (child) {
- cs[i++] = child;
- child = child.nextSibling;
- }
- cs.length = i;
- delete cs[cs.length];
- }
- }
- }
-
- /**
- * Removes the connections between `parentNode` and `child`
- * and any existing `child.previousSibling` or `child.nextSibling`.
- *
- * @see https://github.com/xmldom/xmldom/issues/135
- * @see https://github.com/xmldom/xmldom/issues/145
- *
- * @param {Node} parentNode
- * @param {Node} child
- * @returns {Node} the child that was removed.
- * @private
- */
- function _removeChild(parentNode, child) {
- var previous = child.previousSibling;
- var next = child.nextSibling;
- if (previous) {
- previous.nextSibling = next;
- } else {
- parentNode.firstChild = next;
- }
- if (next) {
- next.previousSibling = previous;
- } else {
- parentNode.lastChild = previous;
- }
- child.parentNode = null;
- child.previousSibling = null;
- child.nextSibling = null;
- _onUpdateChild(parentNode.ownerDocument, parentNode);
- return child;
- }
-
- /**
- * Returns `true` if `node` can be a parent for insertion.
- * @param {Node} node
- * @returns {boolean}
- */
- function hasValidParentNodeType(node) {
- return node && (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE);
- }
-
- /**
- * Returns `true` if `node` can be inserted according to it's `nodeType`.
- * @param {Node} node
- * @returns {boolean}
- */
- function hasInsertableNodeType(node) {
- return node && (isElementNode(node) || isTextNode(node) || isDocTypeNode(node) || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.COMMENT_NODE || node.nodeType === Node.PROCESSING_INSTRUCTION_NODE);
- }
-
- /**
- * Returns true if `node` is a DOCTYPE node
- * @param {Node} node
- * @returns {boolean}
- */
- function isDocTypeNode(node) {
- return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;
- }
-
- /**
- * Returns true if the node is an element
- * @param {Node} node
- * @returns {boolean}
- */
- function isElementNode(node) {
- return node && node.nodeType === Node.ELEMENT_NODE;
- }
- /**
- * Returns true if `node` is a text node
- * @param {Node} node
- * @returns {boolean}
- */
- function isTextNode(node) {
- return node && node.nodeType === Node.TEXT_NODE;
- }
-
- /**
- * Check if en element node can be inserted before `child`, or at the end if child is falsy,
- * according to the presence and position of a doctype node on the same level.
- *
- * @param {Document} doc The document node
- * @param {Node} child the node that would become the nextSibling if the element would be inserted
- * @returns {boolean} `true` if an element can be inserted before child
- * @private
- * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
- function isElementInsertionPossible(doc, child) {
- var parentChildNodes = doc.childNodes || [];
- if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {
- return false;
- }
- var docTypeNode = find(parentChildNodes, isDocTypeNode);
- return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
- }
-
- /**
- * Check if en element node can be inserted before `child`, or at the end if child is falsy,
- * according to the presence and position of a doctype node on the same level.
- *
- * @param {Node} doc The document node
- * @param {Node} child the node that would become the nextSibling if the element would be inserted
- * @returns {boolean} `true` if an element can be inserted before child
- * @private
- * https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
- function isElementReplacementPossible(doc, child) {
- var parentChildNodes = doc.childNodes || [];
- function hasElementChildThatIsNotChild(node) {
- return isElementNode(node) && node !== child;
- }
- if (find(parentChildNodes, hasElementChildThatIsNotChild)) {
- return false;
- }
- var docTypeNode = find(parentChildNodes, isDocTypeNode);
- return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
- }
-
- /**
- * @private
- * Steps 1-5 of the checks before inserting and before replacing a child are the same.
- *
- * @param {Node} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node=} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
- function assertPreInsertionValidity1to5(parent, node, child) {
- // 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException.
- if (!hasValidParentNodeType(parent)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);
- }
- // 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException.
- // not implemented!
- // 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException.
- if (child && child.parentNode !== parent) {
- throw new DOMException(NOT_FOUND_ERR, 'child not in parent');
- }
- if (
- // 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException.
- !hasInsertableNodeType(node) ||
- // 5. If either `node` is a Text node and `parent` is a document,
- // the sax parser currently adds top level text nodes, this will be fixed in 0.9.0
- // || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)
- // or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException.
- isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType);
- }
- }
-
- /**
- * @private
- * Step 6 of the checks before inserting and before replacing a child are different.
- *
- * @param {Document} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
- function assertPreInsertionValidityInDocument(parent, node, child) {
- var parentChildNodes = parent.childNodes || [];
- var nodeChildNodes = node.childNodes || [];
-
- // DocumentFragment
- if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
- var nodeChildElements = nodeChildNodes.filter(isElementNode);
- // If node has more than one element child or has a Text node child.
- if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
- }
- // Otherwise, if `node` has one element child and either `parent` has an element child,
- // `child` is a doctype, or `child` is non-null and a doctype is following `child`.
- if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
- }
- }
- // Element
- if (isElementNode(node)) {
- // `parent` has an element child, `child` is a doctype,
- // or `child` is non-null and a doctype is following `child`.
- if (!isElementInsertionPossible(parent, child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
- }
- }
- // DocumentType
- if (isDocTypeNode(node)) {
- // `parent` has a doctype child,
- if (find(parentChildNodes, isDocTypeNode)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
- }
- var parentElementChild = find(parentChildNodes, isElementNode);
- // `child` is non-null and an element is preceding `child`,
- if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
- }
- // or `child` is null and `parent` has an element child.
- if (!child && parentElementChild) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');
- }
- }
- }
-
- /**
- * @private
- * Step 6 of the checks before inserting and before replacing a child are different.
- *
- * @param {Document} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node | undefined} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- * @see https://dom.spec.whatwg.org/#concept-node-replace
- */
- function assertPreReplacementValidityInDocument(parent, node, child) {
- var parentChildNodes = parent.childNodes || [];
- var nodeChildNodes = node.childNodes || [];
-
- // DocumentFragment
- if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
- var nodeChildElements = nodeChildNodes.filter(isElementNode);
- // If `node` has more than one element child or has a Text node child.
- if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
- }
- // Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.
- if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
- }
- }
- // Element
- if (isElementNode(node)) {
- // `parent` has an element child that is not `child` or a doctype is following `child`.
- if (!isElementReplacementPossible(parent, child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
- }
- }
- // DocumentType
- if (isDocTypeNode(node)) {
- function hasDoctypeChildThatIsNotChild(node) {
- return isDocTypeNode(node) && node !== child;
- }
-
- // `parent` has a doctype child that is not `child`,
- if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
- }
- var parentElementChild = find(parentChildNodes, isElementNode);
- // or an element is preceding `child`.
- if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
- throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
- }
- }
- }
-
- /**
- * @private
- * @param {Node} parent the parent node to insert `node` into
- * @param {Node} node the node to insert
- * @param {Node=} child the node that should become the `nextSibling` of `node`
- * @returns {Node}
- * @throws DOMException for several node combinations that would create a DOM that is not well-formed.
- * @throws DOMException if `child` is provided but is not a child of `parent`.
- * @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
- */
- function _insertBefore(parent, node, child, _inDocumentAssertion) {
- // To ensure pre-insertion validity of a node into a parent before a child, run these steps:
- assertPreInsertionValidity1to5(parent, node, child);
-
- // If parent is a document, and any of the statements below, switched on the interface node implements,
- // are true, then throw a "HierarchyRequestError" DOMException.
- if (parent.nodeType === Node.DOCUMENT_NODE) {
- (_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);
- }
- var cp = node.parentNode;
- if (cp) {
- cp.removeChild(node); //remove and update
- }
-
- if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {
- var newFirst = node.firstChild;
- if (newFirst == null) {
- return node;
- }
- var newLast = node.lastChild;
- } else {
- newFirst = newLast = node;
- }
- var pre = child ? child.previousSibling : parent.lastChild;
- newFirst.previousSibling = pre;
- newLast.nextSibling = child;
- if (pre) {
- pre.nextSibling = newFirst;
- } else {
- parent.firstChild = newFirst;
- }
- if (child == null) {
- parent.lastChild = newLast;
- } else {
- child.previousSibling = newLast;
- }
- do {
- newFirst.parentNode = parent;
- } while (newFirst !== newLast && (newFirst = newFirst.nextSibling));
- _onUpdateChild(parent.ownerDocument || parent, parent);
- //console.log(parent.lastChild.nextSibling == null)
- if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {
- node.firstChild = node.lastChild = null;
- }
- return node;
- }
-
- /**
- * Appends `newChild` to `parentNode`.
- * If `newChild` is already connected to a `parentNode` it is first removed from it.
- *
- * @see https://github.com/xmldom/xmldom/issues/135
- * @see https://github.com/xmldom/xmldom/issues/145
- * @param {Node} parentNode
- * @param {Node} newChild
- * @returns {Node}
- * @private
- */
- function _appendSingleChild(parentNode, newChild) {
- if (newChild.parentNode) {
- newChild.parentNode.removeChild(newChild);
- }
- newChild.parentNode = parentNode;
- newChild.previousSibling = parentNode.lastChild;
- newChild.nextSibling = null;
- if (newChild.previousSibling) {
- newChild.previousSibling.nextSibling = newChild;
- } else {
- parentNode.firstChild = newChild;
- }
- parentNode.lastChild = newChild;
- _onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
- return newChild;
- }
- Document.prototype = {
- //implementation : null,
- nodeName: '#document',
- nodeType: DOCUMENT_NODE,
- /**
- * The DocumentType node of the document.
- *
- * @readonly
- * @type DocumentType
- */
- doctype: null,
- documentElement: null,
- _inc: 1,
- insertBefore: function (newChild, refChild) {
- //raises
- if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
- var child = newChild.firstChild;
- while (child) {
- var next = child.nextSibling;
- this.insertBefore(child, refChild);
- child = next;
- }
- return newChild;
- }
- _insertBefore(this, newChild, refChild);
- newChild.ownerDocument = this;
- if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {
- this.documentElement = newChild;
- }
- return newChild;
- },
- removeChild: function (oldChild) {
- if (this.documentElement == oldChild) {
- this.documentElement = null;
- }
- return _removeChild(this, oldChild);
- },
- replaceChild: function (newChild, oldChild) {
- //raises
- _insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
- newChild.ownerDocument = this;
- if (oldChild) {
- this.removeChild(oldChild);
- }
- if (isElementNode(newChild)) {
- this.documentElement = newChild;
- }
- },
- // Introduced in DOM Level 2:
- importNode: function (importedNode, deep) {
- return importNode(this, importedNode, deep);
- },
- // Introduced in DOM Level 2:
- getElementById: function (id) {
- var rtv = null;
- _visitNode(this.documentElement, function (node) {
- if (node.nodeType == ELEMENT_NODE) {
- if (node.getAttribute('id') == id) {
- rtv = node;
- return true;
- }
- }
- });
- return rtv;
- },
- /**
- * The `getElementsByClassName` method of `Document` interface returns an array-like object
- * of all child elements which have **all** of the given class name(s).
- *
- * Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.
- *
- *
- * Warning: This is a live LiveNodeList.
- * Changes in the DOM will reflect in the array as the changes occur.
- * If an element selected by this array no longer qualifies for the selector,
- * it will automatically be removed. Be aware of this for iteration purposes.
- *
- * @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
- * @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
- */
- getElementsByClassName: function (classNames) {
- var classNamesSet = toOrderedSet(classNames);
- return new LiveNodeList(this, function (base) {
- var ls = [];
- if (classNamesSet.length > 0) {
- _visitNode(base.documentElement, function (node) {
- if (node !== base && node.nodeType === ELEMENT_NODE) {
- var nodeClassNames = node.getAttribute('class');
- // can be null if the attribute does not exist
- if (nodeClassNames) {
- // before splitting and iterating just compare them for the most common case
- var matches = classNames === nodeClassNames;
- if (!matches) {
- var nodeClassNamesSet = toOrderedSet(nodeClassNames);
- matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));
- }
- if (matches) {
- ls.push(node);
- }
- }
- }
- });
- }
- return ls;
- });
- },
- //document factory method:
- createElement: function (tagName) {
- var node = new Element();
- node.ownerDocument = this;
- node.nodeName = tagName;
- node.tagName = tagName;
- node.localName = tagName;
- node.childNodes = new NodeList();
- var attrs = node.attributes = new NamedNodeMap();
- attrs._ownerElement = node;
- return node;
- },
- createDocumentFragment: function () {
- var node = new DocumentFragment();
- node.ownerDocument = this;
- node.childNodes = new NodeList();
- return node;
- },
- createTextNode: function (data) {
- var node = new Text();
- node.ownerDocument = this;
- node.appendData(data);
- return node;
- },
- createComment: function (data) {
- var node = new Comment();
- node.ownerDocument = this;
- node.appendData(data);
- return node;
- },
- createCDATASection: function (data) {
- var node = new CDATASection();
- node.ownerDocument = this;
- node.appendData(data);
- return node;
- },
- createProcessingInstruction: function (target, data) {
- var node = new ProcessingInstruction();
- node.ownerDocument = this;
- node.tagName = node.nodeName = node.target = target;
- node.nodeValue = node.data = data;
- return node;
- },
- createAttribute: function (name) {
- var node = new Attr();
- node.ownerDocument = this;
- node.name = name;
- node.nodeName = name;
- node.localName = name;
- node.specified = true;
- return node;
- },
- createEntityReference: function (name) {
- var node = new EntityReference();
- node.ownerDocument = this;
- node.nodeName = name;
- return node;
- },
- // Introduced in DOM Level 2:
- createElementNS: function (namespaceURI, qualifiedName) {
- var node = new Element();
- var pl = qualifiedName.split(':');
- var attrs = node.attributes = new NamedNodeMap();
- node.childNodes = new NodeList();
- node.ownerDocument = this;
- node.nodeName = qualifiedName;
- node.tagName = qualifiedName;
- node.namespaceURI = namespaceURI;
- if (pl.length == 2) {
- node.prefix = pl[0];
- node.localName = pl[1];
- } else {
- //el.prefix = null;
- node.localName = qualifiedName;
- }
- attrs._ownerElement = node;
- return node;
- },
- // Introduced in DOM Level 2:
- createAttributeNS: function (namespaceURI, qualifiedName) {
- var node = new Attr();
- var pl = qualifiedName.split(':');
- node.ownerDocument = this;
- node.nodeName = qualifiedName;
- node.name = qualifiedName;
- node.namespaceURI = namespaceURI;
- node.specified = true;
- if (pl.length == 2) {
- node.prefix = pl[0];
- node.localName = pl[1];
- } else {
- //el.prefix = null;
- node.localName = qualifiedName;
- }
- return node;
- }
- };
- _extends(Document, Node);
- function Element() {
- this._nsMap = {};
- }
- Element.prototype = {
- nodeType: ELEMENT_NODE,
- hasAttribute: function (name) {
- return this.getAttributeNode(name) != null;
- },
- getAttribute: function (name) {
- var attr = this.getAttributeNode(name);
- return attr && attr.value || '';
- },
- getAttributeNode: function (name) {
- return this.attributes.getNamedItem(name);
- },
- setAttribute: function (name, value) {
- var attr = this.ownerDocument.createAttribute(name);
- attr.value = attr.nodeValue = "" + value;
- this.setAttributeNode(attr);
- },
- removeAttribute: function (name) {
- var attr = this.getAttributeNode(name);
- attr && this.removeAttributeNode(attr);
- },
- //four real opeartion method
- appendChild: function (newChild) {
- if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
- return this.insertBefore(newChild, null);
- } else {
- return _appendSingleChild(this, newChild);
- }
- },
- setAttributeNode: function (newAttr) {
- return this.attributes.setNamedItem(newAttr);
- },
- setAttributeNodeNS: function (newAttr) {
- return this.attributes.setNamedItemNS(newAttr);
- },
- removeAttributeNode: function (oldAttr) {
- //console.log(this == oldAttr.ownerElement)
- return this.attributes.removeNamedItem(oldAttr.nodeName);
- },
- //get real attribute name,and remove it by removeAttributeNode
- removeAttributeNS: function (namespaceURI, localName) {
- var old = this.getAttributeNodeNS(namespaceURI, localName);
- old && this.removeAttributeNode(old);
- },
- hasAttributeNS: function (namespaceURI, localName) {
- return this.getAttributeNodeNS(namespaceURI, localName) != null;
- },
- getAttributeNS: function (namespaceURI, localName) {
- var attr = this.getAttributeNodeNS(namespaceURI, localName);
- return attr && attr.value || '';
- },
- setAttributeNS: function (namespaceURI, qualifiedName, value) {
- var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
- attr.value = attr.nodeValue = "" + value;
- this.setAttributeNode(attr);
- },
- getAttributeNodeNS: function (namespaceURI, localName) {
- return this.attributes.getNamedItemNS(namespaceURI, localName);
- },
- getElementsByTagName: function (tagName) {
- return new LiveNodeList(this, function (base) {
- var ls = [];
- _visitNode(base, function (node) {
- if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {
- ls.push(node);
- }
- });
- return ls;
- });
- },
- getElementsByTagNameNS: function (namespaceURI, localName) {
- return new LiveNodeList(this, function (base) {
- var ls = [];
- _visitNode(base, function (node) {
- if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {
- ls.push(node);
- }
- });
- return ls;
- });
- }
- };
- Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
- Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;
- _extends(Element, Node);
- function Attr() {}
- Attr.prototype.nodeType = ATTRIBUTE_NODE;
- _extends(Attr, Node);
- function CharacterData() {}
- CharacterData.prototype = {
- data: '',
- substringData: function (offset, count) {
- return this.data.substring(offset, offset + count);
- },
- appendData: function (text) {
- text = this.data + text;
- this.nodeValue = this.data = text;
- this.length = text.length;
- },
- insertData: function (offset, text) {
- this.replaceData(offset, 0, text);
- },
- appendChild: function (newChild) {
- throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);
- },
- deleteData: function (offset, count) {
- this.replaceData(offset, count, "");
- },
- replaceData: function (offset, count, text) {
- var start = this.data.substring(0, offset);
- var end = this.data.substring(offset + count);
- text = start + text + end;
- this.nodeValue = this.data = text;
- this.length = text.length;
- }
- };
- _extends(CharacterData, Node);
- function Text() {}
- Text.prototype = {
- nodeName: "#text",
- nodeType: TEXT_NODE,
- splitText: function (offset) {
- var text = this.data;
- var newText = text.substring(offset);
- text = text.substring(0, offset);
- this.data = this.nodeValue = text;
- this.length = text.length;
- var newNode = this.ownerDocument.createTextNode(newText);
- if (this.parentNode) {
- this.parentNode.insertBefore(newNode, this.nextSibling);
- }
- return newNode;
- }
- };
- _extends(Text, CharacterData);
- function Comment() {}
- Comment.prototype = {
- nodeName: "#comment",
- nodeType: COMMENT_NODE
- };
- _extends(Comment, CharacterData);
- function CDATASection() {}
- CDATASection.prototype = {
- nodeName: "#cdata-section",
- nodeType: CDATA_SECTION_NODE
- };
- _extends(CDATASection, CharacterData);
- function DocumentType() {}
- DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
- _extends(DocumentType, Node);
- function Notation() {}
- Notation.prototype.nodeType = NOTATION_NODE;
- _extends(Notation, Node);
- function Entity() {}
- Entity.prototype.nodeType = ENTITY_NODE;
- _extends(Entity, Node);
- function EntityReference() {}
- EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
- _extends(EntityReference, Node);
- function DocumentFragment() {}
- DocumentFragment.prototype.nodeName = "#document-fragment";
- DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;
- _extends(DocumentFragment, Node);
- function ProcessingInstruction() {}
- ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
- _extends(ProcessingInstruction, Node);
- function XMLSerializer() {}
- XMLSerializer.prototype.serializeToString = function (node, isHtml, nodeFilter) {
- return nodeSerializeToString.call(node, isHtml, nodeFilter);
- };
- Node.prototype.toString = nodeSerializeToString;
- function nodeSerializeToString(isHtml, nodeFilter) {
- var buf = [];
- var refNode = this.nodeType == 9 && this.documentElement || this;
- var prefix = refNode.prefix;
- var uri = refNode.namespaceURI;
- if (uri && prefix == null) {
- //console.log(prefix)
- var prefix = refNode.lookupPrefix(uri);
- if (prefix == null) {
- //isHTML = true;
- var visibleNamespaces = [{
- namespace: uri,
- prefix: null
- }
- //{namespace:uri,prefix:''}
- ];
- }
- }
-
- serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces);
- //console.log('###',this.nodeType,uri,prefix,buf.join(''))
- return buf.join('');
- }
- function needNamespaceDefine(node, isHTML, visibleNamespaces) {
- var prefix = node.prefix || '';
- var uri = node.namespaceURI;
- // According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
- // and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
- // > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
- // in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
- // and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
- // > [...] Furthermore, the attribute value [...] must not be an empty string.
- // so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
- if (!uri) {
- return false;
- }
- if (prefix === "xml" && uri === NAMESPACE$2.XML || uri === NAMESPACE$2.XMLNS) {
- return false;
- }
- var i = visibleNamespaces.length;
- while (i--) {
- var ns = visibleNamespaces[i];
- // get namespace prefix
- if (ns.prefix === prefix) {
- return ns.namespace !== uri;
- }
- }
- return true;
- }
- /**
- * Well-formed constraint: No < in Attribute Values
- * > The replacement text of any entity referred to directly or indirectly
- * > in an attribute value must not contain a <.
- * @see https://www.w3.org/TR/xml11/#CleanAttrVals
- * @see https://www.w3.org/TR/xml11/#NT-AttValue
- *
- * Literal whitespace other than space that appear in attribute values
- * are serialized as their entity references, so they will be preserved.
- * (In contrast to whitespace literals in the input which are normalized to spaces)
- * @see https://www.w3.org/TR/xml11/#AVNormalize
- * @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
- */
- function addSerializedAttribute(buf, qualifiedName, value) {
- buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"');
- }
- function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {
- if (!visibleNamespaces) {
- visibleNamespaces = [];
- }
- if (nodeFilter) {
- node = nodeFilter(node);
- if (node) {
- if (typeof node == 'string') {
- buf.push(node);
- return;
- }
- } else {
- return;
- }
- //buf.sort.apply(attrs, attributeSorter);
- }
-
- switch (node.nodeType) {
- case ELEMENT_NODE:
- var attrs = node.attributes;
- var len = attrs.length;
- var child = node.firstChild;
- var nodeName = node.tagName;
- isHTML = NAMESPACE$2.isHTML(node.namespaceURI) || isHTML;
- var prefixedNodeName = nodeName;
- if (!isHTML && !node.prefix && node.namespaceURI) {
- var defaultNS;
- // lookup current default ns from `xmlns` attribute
- for (var ai = 0; ai < attrs.length; ai++) {
- if (attrs.item(ai).name === 'xmlns') {
- defaultNS = attrs.item(ai).value;
- break;
- }
- }
- if (!defaultNS) {
- // lookup current default ns in visibleNamespaces
- for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
- var namespace = visibleNamespaces[nsi];
- if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {
- defaultNS = namespace.namespace;
- break;
- }
- }
- }
- if (defaultNS !== node.namespaceURI) {
- for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
- var namespace = visibleNamespaces[nsi];
- if (namespace.namespace === node.namespaceURI) {
- if (namespace.prefix) {
- prefixedNodeName = namespace.prefix + ':' + nodeName;
- }
- break;
- }
- }
- }
- }
- buf.push('<', prefixedNodeName);
- for (var i = 0; i < len; i++) {
- // add namespaces for attributes
- var attr = attrs.item(i);
- if (attr.prefix == 'xmlns') {
- visibleNamespaces.push({
- prefix: attr.localName,
- namespace: attr.value
- });
- } else if (attr.nodeName == 'xmlns') {
- visibleNamespaces.push({
- prefix: '',
- namespace: attr.value
- });
- }
- }
- for (var i = 0; i < len; i++) {
- var attr = attrs.item(i);
- if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {
- var prefix = attr.prefix || '';
- var uri = attr.namespaceURI;
- addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
- visibleNamespaces.push({
- prefix: prefix,
- namespace: uri
- });
- }
- serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);
- }
-
- // add namespace for current node
- if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {
- var prefix = node.prefix || '';
- var uri = node.namespaceURI;
- addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
- visibleNamespaces.push({
- prefix: prefix,
- namespace: uri
- });
- }
- if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {
- buf.push('>');
- //if is cdata child node
- if (isHTML && /^script$/i.test(nodeName)) {
- while (child) {
- if (child.data) {
- buf.push(child.data);
- } else {
- serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
- }
- child = child.nextSibling;
- }
- } else {
- while (child) {
- serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
- child = child.nextSibling;
- }
- }
- buf.push('</', prefixedNodeName, '>');
- } else {
- buf.push('/>');
- }
- // remove added visible namespaces
- //visibleNamespaces.length = startVisibleNamespaces;
- return;
- case DOCUMENT_NODE:
- case DOCUMENT_FRAGMENT_NODE:
- var child = node.firstChild;
- while (child) {
- serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
- child = child.nextSibling;
- }
- return;
- case ATTRIBUTE_NODE:
- return addSerializedAttribute(buf, node.name, node.value);
- case TEXT_NODE:
- /**
- * The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
- * except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
- * If they are needed elsewhere, they must be escaped using either numeric character references or the strings
- * `&amp;` and `&lt;` respectively.
- * The right angle bracket (>) may be represented using the string " &gt; ", and must, for compatibility,
- * be escaped using either `&gt;` or a character reference when it appears in the string `]]>` in content,
- * when that string is not marking the end of a CDATA section.
- *
- * In the content of elements, character data is any string of characters
- * which does not contain the start-delimiter of any markup
- * and does not include the CDATA-section-close delimiter, `]]>`.
- *
- * @see https://www.w3.org/TR/xml/#NT-CharData
- * @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
- */
- return buf.push(node.data.replace(/[<&>]/g, _xmlEncoder));
- case CDATA_SECTION_NODE:
- return buf.push('<![CDATA[', node.data, ']]>');
- case COMMENT_NODE:
- return buf.push("<!--", node.data, "-->");
- case DOCUMENT_TYPE_NODE:
- var pubid = node.publicId;
- var sysid = node.systemId;
- buf.push('<!DOCTYPE ', node.name);
- if (pubid) {
- buf.push(' PUBLIC ', pubid);
- if (sysid && sysid != '.') {
- buf.push(' ', sysid);
- }
- buf.push('>');
- } else if (sysid && sysid != '.') {
- buf.push(' SYSTEM ', sysid, '>');
- } else {
- var sub = node.internalSubset;
- if (sub) {
- buf.push(" [", sub, "]");
- }
- buf.push(">");
- }
- return;
- case PROCESSING_INSTRUCTION_NODE:
- return buf.push("<?", node.target, " ", node.data, "?>");
- case ENTITY_REFERENCE_NODE:
- return buf.push('&', node.nodeName, ';');
- //case ENTITY_NODE:
- //case NOTATION_NODE:
- default:
- buf.push('??', node.nodeName);
- }
- }
- function importNode(doc, node, deep) {
- var node2;
- switch (node.nodeType) {
- case ELEMENT_NODE:
- node2 = node.cloneNode(false);
- node2.ownerDocument = doc;
- //var attrs = node2.attributes;
- //var len = attrs.length;
- //for(var i=0;i<len;i++){
- //node2.setAttributeNodeNS(importNode(doc,attrs.item(i),deep));
- //}
- case DOCUMENT_FRAGMENT_NODE:
- break;
- case ATTRIBUTE_NODE:
- deep = true;
- break;
- //case ENTITY_REFERENCE_NODE:
- //case PROCESSING_INSTRUCTION_NODE:
- ////case TEXT_NODE:
- //case CDATA_SECTION_NODE:
- //case COMMENT_NODE:
- // deep = false;
- // break;
- //case DOCUMENT_NODE:
- //case DOCUMENT_TYPE_NODE:
- //cannot be imported.
- //case ENTITY_NODE:
- //case NOTATION_NODE：
- //can not hit in level3
- //default:throw e;
- }
-
- if (!node2) {
- node2 = node.cloneNode(false); //false
- }
-
- node2.ownerDocument = doc;
- node2.parentNode = null;
- if (deep) {
- var child = node.firstChild;
- while (child) {
- node2.appendChild(importNode(doc, child, deep));
- child = child.nextSibling;
- }
- }
- return node2;
- }
- //
- //var _relationMap = {firstChild:1,lastChild:1,previousSibling:1,nextSibling:1,
- // attributes:1,childNodes:1,parentNode:1,documentElement:1,doctype,};
- function cloneNode(doc, node, deep) {
- var node2 = new node.constructor();
- for (var n in node) {
- if (Object.prototype.hasOwnProperty.call(node, n)) {
- var v = node[n];
- if (typeof v != "object") {
- if (v != node2[n]) {
- node2[n] = v;
- }
- }
- }
- }
- if (node.childNodes) {
- node2.childNodes = new NodeList();
- }
- node2.ownerDocument = doc;
- switch (node2.nodeType) {
- case ELEMENT_NODE:
- var attrs = node.attributes;
- var attrs2 = node2.attributes = new NamedNodeMap();
- var len = attrs.length;
- attrs2._ownerElement = node2;
- for (var i = 0; i < len; i++) {
- node2.setAttributeNode(cloneNode(doc, attrs.item(i), true));
- }
- break;
- case ATTRIBUTE_NODE:
- deep = true;
- }
- if (deep) {
- var child = node.firstChild;
- while (child) {
- node2.appendChild(cloneNode(doc, child, deep));
- child = child.nextSibling;
- }
- }
- return node2;
- }
- function __set__(object, key, value) {
- object[key] = value;
- }
- //do dynamic
- try {
- if (Object.defineProperty) {
- Object.defineProperty(LiveNodeList.prototype, 'length', {
- get: function () {
- _updateLiveList(this);
- return this.$$length;
- }
- });
- Object.defineProperty(Node.prototype, 'textContent', {
- get: function () {
- return getTextContent(this);
- },
- set: function (data) {
- switch (this.nodeType) {
- case ELEMENT_NODE:
- case DOCUMENT_FRAGMENT_NODE:
- while (this.firstChild) {
- this.removeChild(this.firstChild);
- }
- if (data || String(data)) {
- this.appendChild(this.ownerDocument.createTextNode(data));
- }
- break;
- default:
- this.data = data;
- this.value = data;
- this.nodeValue = data;
- }
- }
- });
- function getTextContent(node) {
- switch (node.nodeType) {
- case ELEMENT_NODE:
- case DOCUMENT_FRAGMENT_NODE:
- var buf = [];
- node = node.firstChild;
- while (node) {
- if (node.nodeType !== 7 && node.nodeType !== 8) {
- buf.push(getTextContent(node));
- }
- node = node.nextSibling;
- }
- return buf.join('');
- default:
- return node.nodeValue;
- }
- }
- __set__ = function (object, key, value) {
- //console.log(value)
- object['$$' + key] = value;
- };
- }
- } catch (e) {//ie8
- }
-
- //if(typeof require == 'function'){
- var DocumentType_1 = DocumentType;
- var DOMException_1 = DOMException;
- var DOMImplementation_1 = DOMImplementation$1;
- var Element_1 = Element;
- var Node_1 = Node;
- var NodeList_1 = NodeList;
- var XMLSerializer_1 = XMLSerializer;
- //}
-
- var dom = {
- DocumentType: DocumentType_1,
- DOMException: DOMException_1,
- DOMImplementation: DOMImplementation_1,
- Element: Element_1,
- Node: Node_1,
- NodeList: NodeList_1,
- XMLSerializer: XMLSerializer_1
- };
-
- var entities = createCommonjsModule(function (module, exports) {
-
- var freeze = conventions.freeze;
-
- /**
- * The entities that are predefined in every XML document.
- *
- * @see https://www.w3.org/TR/2006/REC-xml11-20060816/#sec-predefined-ent W3C XML 1.1
- * @see https://www.w3.org/TR/2008/REC-xml-20081126/#sec-predefined-ent W3C XML 1.0
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Predefined_entities_in_XML Wikipedia
- */
- exports.XML_ENTITIES = freeze({
- amp: '&',
- apos: "'",
- gt: '>',
- lt: '<',
- quot: '"'
- });
-
- /**
- * A map of all entities that are detected in an HTML document.
- * They contain all entries from `XML_ENTITIES`.
- *
- * @see XML_ENTITIES
- * @see DOMParser.parseFromString
- * @see DOMImplementation.prototype.createHTMLDocument
- * @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
- * @see https://html.spec.whatwg.org/entities.json JSON
- * @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
- * @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
- * @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
- */
- exports.HTML_ENTITIES = freeze({
- Aacute: '\u00C1',
- aacute: '\u00E1',
- Abreve: '\u0102',
- abreve: '\u0103',
- ac: '\u223E',
- acd: '\u223F',
- acE: '\u223E\u0333',
- Acirc: '\u00C2',
- acirc: '\u00E2',
- acute: '\u00B4',
- Acy: '\u0410',
- acy: '\u0430',
- AElig: '\u00C6',
- aelig: '\u00E6',
- af: '\u2061',
- Afr: '\uD835\uDD04',
- afr: '\uD835\uDD1E',
- Agrave: '\u00C0',
- agrave: '\u00E0',
- alefsym: '\u2135',
- aleph: '\u2135',
- Alpha: '\u0391',
- alpha: '\u03B1',
- Amacr: '\u0100',
- amacr: '\u0101',
- amalg: '\u2A3F',
- AMP: '\u0026',
- amp: '\u0026',
- And: '\u2A53',
- and: '\u2227',
- andand: '\u2A55',
- andd: '\u2A5C',
- andslope: '\u2A58',
- andv: '\u2A5A',
- ang: '\u2220',
- ange: '\u29A4',
- angle: '\u2220',
- angmsd: '\u2221',
- angmsdaa: '\u29A8',
- angmsdab: '\u29A9',
- angmsdac: '\u29AA',
- angmsdad: '\u29AB',
- angmsdae: '\u29AC',
- angmsdaf: '\u29AD',
- angmsdag: '\u29AE',
- angmsdah: '\u29AF',
- angrt: '\u221F',
- angrtvb: '\u22BE',
- angrtvbd: '\u299D',
- angsph: '\u2222',
- angst: '\u00C5',
- angzarr: '\u237C',
- Aogon: '\u0104',
- aogon: '\u0105',
- Aopf: '\uD835\uDD38',
- aopf: '\uD835\uDD52',
- ap: '\u2248',
- apacir: '\u2A6F',
- apE: '\u2A70',
- ape: '\u224A',
- apid: '\u224B',
- apos: '\u0027',
- ApplyFunction: '\u2061',
- approx: '\u2248',
- approxeq: '\u224A',
- Aring: '\u00C5',
- aring: '\u00E5',
- Ascr: '\uD835\uDC9C',
- ascr: '\uD835\uDCB6',
- Assign: '\u2254',
- ast: '\u002A',
- asymp: '\u2248',
- asympeq: '\u224D',
- Atilde: '\u00C3',
- atilde: '\u00E3',
- Auml: '\u00C4',
- auml: '\u00E4',
- awconint: '\u2233',
- awint: '\u2A11',
- backcong: '\u224C',
- backepsilon: '\u03F6',
- backprime: '\u2035',
- backsim: '\u223D',
- backsimeq: '\u22CD',
- Backslash: '\u2216',
- Barv: '\u2AE7',
- barvee: '\u22BD',
- Barwed: '\u2306',
- barwed: '\u2305',
- barwedge: '\u2305',
- bbrk: '\u23B5',
- bbrktbrk: '\u23B6',
- bcong: '\u224C',
- Bcy: '\u0411',
- bcy: '\u0431',
- bdquo: '\u201E',
- becaus: '\u2235',
- Because: '\u2235',
- because: '\u2235',
- bemptyv: '\u29B0',
- bepsi: '\u03F6',
- bernou: '\u212C',
- Bernoullis: '\u212C',
- Beta: '\u0392',
- beta: '\u03B2',
- beth: '\u2136',
- between: '\u226C',
- Bfr: '\uD835\uDD05',
- bfr: '\uD835\uDD1F',
- bigcap: '\u22C2',
- bigcirc: '\u25EF',
- bigcup: '\u22C3',
- bigodot: '\u2A00',
- bigoplus: '\u2A01',
- bigotimes: '\u2A02',
- bigsqcup: '\u2A06',
- bigstar: '\u2605',
- bigtriangledown: '\u25BD',
- bigtriangleup: '\u25B3',
- biguplus: '\u2A04',
- bigvee: '\u22C1',
- bigwedge: '\u22C0',
- bkarow: '\u290D',
- blacklozenge: '\u29EB',
- blacksquare: '\u25AA',
- blacktriangle: '\u25B4',
- blacktriangledown: '\u25BE',
- blacktriangleleft: '\u25C2',
- blacktriangleright: '\u25B8',
- blank: '\u2423',
- blk12: '\u2592',
- blk14: '\u2591',
- blk34: '\u2593',
- block: '\u2588',
- bne: '\u003D\u20E5',
- bnequiv: '\u2261\u20E5',
- bNot: '\u2AED',
- bnot: '\u2310',
- Bopf: '\uD835\uDD39',
- bopf: '\uD835\uDD53',
- bot: '\u22A5',
- bottom: '\u22A5',
- bowtie: '\u22C8',
- boxbox: '\u29C9',
- boxDL: '\u2557',
- boxDl: '\u2556',
- boxdL: '\u2555',
- boxdl: '\u2510',
- boxDR: '\u2554',
- boxDr: '\u2553',
- boxdR: '\u2552',
- boxdr: '\u250C',
- boxH: '\u2550',
- boxh: '\u2500',
- boxHD: '\u2566',
- boxHd: '\u2564',
- boxhD: '\u2565',
- boxhd: '\u252C',
- boxHU: '\u2569',
- boxHu: '\u2567',
- boxhU: '\u2568',
- boxhu: '\u2534',
- boxminus: '\u229F',
- boxplus: '\u229E',
- boxtimes: '\u22A0',
- boxUL: '\u255D',
- boxUl: '\u255C',
- boxuL: '\u255B',
- boxul: '\u2518',
- boxUR: '\u255A',
- boxUr: '\u2559',
- boxuR: '\u2558',
- boxur: '\u2514',
- boxV: '\u2551',
- boxv: '\u2502',
- boxVH: '\u256C',
- boxVh: '\u256B',
- boxvH: '\u256A',
- boxvh: '\u253C',
- boxVL: '\u2563',
- boxVl: '\u2562',
- boxvL: '\u2561',
- boxvl: '\u2524',
- boxVR: '\u2560',
- boxVr: '\u255F',
- boxvR: '\u255E',
- boxvr: '\u251C',
- bprime: '\u2035',
- Breve: '\u02D8',
- breve: '\u02D8',
- brvbar: '\u00A6',
- Bscr: '\u212C',
- bscr: '\uD835\uDCB7',
- bsemi: '\u204F',
- bsim: '\u223D',
- bsime: '\u22CD',
- bsol: '\u005C',
- bsolb: '\u29C5',
- bsolhsub: '\u27C8',
- bull: '\u2022',
- bullet: '\u2022',
- bump: '\u224E',
- bumpE: '\u2AAE',
- bumpe: '\u224F',
- Bumpeq: '\u224E',
- bumpeq: '\u224F',
- Cacute: '\u0106',
- cacute: '\u0107',
- Cap: '\u22D2',
- cap: '\u2229',
- capand: '\u2A44',
- capbrcup: '\u2A49',
- capcap: '\u2A4B',
- capcup: '\u2A47',
- capdot: '\u2A40',
- CapitalDifferentialD: '\u2145',
- caps: '\u2229\uFE00',
- caret: '\u2041',
- caron: '\u02C7',
- Cayleys: '\u212D',
- ccaps: '\u2A4D',
- Ccaron: '\u010C',
- ccaron: '\u010D',
- Ccedil: '\u00C7',
- ccedil: '\u00E7',
- Ccirc: '\u0108',
- ccirc: '\u0109',
- Cconint: '\u2230',
- ccups: '\u2A4C',
- ccupssm: '\u2A50',
- Cdot: '\u010A',
- cdot: '\u010B',
- cedil: '\u00B8',
- Cedilla: '\u00B8',
- cemptyv: '\u29B2',
- cent: '\u00A2',
- CenterDot: '\u00B7',
- centerdot: '\u00B7',
- Cfr: '\u212D',
- cfr: '\uD835\uDD20',
- CHcy: '\u0427',
- chcy: '\u0447',
- check: '\u2713',
- checkmark: '\u2713',
- Chi: '\u03A7',
- chi: '\u03C7',
- cir: '\u25CB',
- circ: '\u02C6',
- circeq: '\u2257',
- circlearrowleft: '\u21BA',
- circlearrowright: '\u21BB',
- circledast: '\u229B',
- circledcirc: '\u229A',
- circleddash: '\u229D',
- CircleDot: '\u2299',
- circledR: '\u00AE',
- circledS: '\u24C8',
- CircleMinus: '\u2296',
- CirclePlus: '\u2295',
- CircleTimes: '\u2297',
- cirE: '\u29C3',
- cire: '\u2257',
- cirfnint: '\u2A10',
- cirmid: '\u2AEF',
- cirscir: '\u29C2',
- ClockwiseContourIntegral: '\u2232',
- CloseCurlyDoubleQuote: '\u201D',
- CloseCurlyQuote: '\u2019',
- clubs: '\u2663',
- clubsuit: '\u2663',
- Colon: '\u2237',
- colon: '\u003A',
- Colone: '\u2A74',
- colone: '\u2254',
- coloneq: '\u2254',
- comma: '\u002C',
- commat: '\u0040',
- comp: '\u2201',
- compfn: '\u2218',
- complement: '\u2201',
- complexes: '\u2102',
- cong: '\u2245',
- congdot: '\u2A6D',
- Congruent: '\u2261',
- Conint: '\u222F',
- conint: '\u222E',
- ContourIntegral: '\u222E',
- Copf: '\u2102',
- copf: '\uD835\uDD54',
- coprod: '\u2210',
- Coproduct: '\u2210',
- COPY: '\u00A9',
- copy: '\u00A9',
- copysr: '\u2117',
- CounterClockwiseContourIntegral: '\u2233',
- crarr: '\u21B5',
- Cross: '\u2A2F',
- cross: '\u2717',
- Cscr: '\uD835\uDC9E',
- cscr: '\uD835\uDCB8',
- csub: '\u2ACF',
- csube: '\u2AD1',
- csup: '\u2AD0',
- csupe: '\u2AD2',
- ctdot: '\u22EF',
- cudarrl: '\u2938',
- cudarrr: '\u2935',
- cuepr: '\u22DE',
- cuesc: '\u22DF',
- cularr: '\u21B6',
- cularrp: '\u293D',
- Cup: '\u22D3',
- cup: '\u222A',
- cupbrcap: '\u2A48',
- CupCap: '\u224D',
- cupcap: '\u2A46',
- cupcup: '\u2A4A',
- cupdot: '\u228D',
- cupor: '\u2A45',
- cups: '\u222A\uFE00',
- curarr: '\u21B7',
- curarrm: '\u293C',
- curlyeqprec: '\u22DE',
- curlyeqsucc: '\u22DF',
- curlyvee: '\u22CE',
- curlywedge: '\u22CF',
- curren: '\u00A4',
- curvearrowleft: '\u21B6',
- curvearrowright: '\u21B7',
- cuvee: '\u22CE',
- cuwed: '\u22CF',
- cwconint: '\u2232',
- cwint: '\u2231',
- cylcty: '\u232D',
- Dagger: '\u2021',
- dagger: '\u2020',
- daleth: '\u2138',
- Darr: '\u21A1',
- dArr: '\u21D3',
- darr: '\u2193',
- dash: '\u2010',
- Dashv: '\u2AE4',
- dashv: '\u22A3',
- dbkarow: '\u290F',
- dblac: '\u02DD',
- Dcaron: '\u010E',
- dcaron: '\u010F',
- Dcy: '\u0414',
- dcy: '\u0434',
- DD: '\u2145',
- dd: '\u2146',
- ddagger: '\u2021',
- ddarr: '\u21CA',
- DDotrahd: '\u2911',
- ddotseq: '\u2A77',
- deg: '\u00B0',
- Del: '\u2207',
- Delta: '\u0394',
- delta: '\u03B4',
- demptyv: '\u29B1',
- dfisht: '\u297F',
- Dfr: '\uD835\uDD07',
- dfr: '\uD835\uDD21',
- dHar: '\u2965',
- dharl: '\u21C3',
- dharr: '\u21C2',
- DiacriticalAcute: '\u00B4',
- DiacriticalDot: '\u02D9',
- DiacriticalDoubleAcute: '\u02DD',
- DiacriticalGrave: '\u0060',
- DiacriticalTilde: '\u02DC',
- diam: '\u22C4',
- Diamond: '\u22C4',
- diamond: '\u22C4',
- diamondsuit: '\u2666',
- diams: '\u2666',
- die: '\u00A8',
- DifferentialD: '\u2146',
- digamma: '\u03DD',
- disin: '\u22F2',
- div: '\u00F7',
- divide: '\u00F7',
- divideontimes: '\u22C7',
- divonx: '\u22C7',
- DJcy: '\u0402',
- djcy: '\u0452',
- dlcorn: '\u231E',
- dlcrop: '\u230D',
- dollar: '\u0024',
- Dopf: '\uD835\uDD3B',
- dopf: '\uD835\uDD55',
- Dot: '\u00A8',
- dot: '\u02D9',
- DotDot: '\u20DC',
- doteq: '\u2250',
- doteqdot: '\u2251',
- DotEqual: '\u2250',
- dotminus: '\u2238',
- dotplus: '\u2214',
- dotsquare: '\u22A1',
- doublebarwedge: '\u2306',
- DoubleContourIntegral: '\u222F',
- DoubleDot: '\u00A8',
- DoubleDownArrow: '\u21D3',
- DoubleLeftArrow: '\u21D0',
- DoubleLeftRightArrow: '\u21D4',
- DoubleLeftTee: '\u2AE4',
- DoubleLongLeftArrow: '\u27F8',
- DoubleLongLeftRightArrow: '\u27FA',
- DoubleLongRightArrow: '\u27F9',
- DoubleRightArrow: '\u21D2',
- DoubleRightTee: '\u22A8',
- DoubleUpArrow: '\u21D1',
- DoubleUpDownArrow: '\u21D5',
- DoubleVerticalBar: '\u2225',
- DownArrow: '\u2193',
- Downarrow: '\u21D3',
- downarrow: '\u2193',
- DownArrowBar: '\u2913',
- DownArrowUpArrow: '\u21F5',
- DownBreve: '\u0311',
- downdownarrows: '\u21CA',
- downharpoonleft: '\u21C3',
- downharpoonright: '\u21C2',
- DownLeftRightVector: '\u2950',
- DownLeftTeeVector: '\u295E',
- DownLeftVector: '\u21BD',
- DownLeftVectorBar: '\u2956',
- DownRightTeeVector: '\u295F',
- DownRightVector: '\u21C1',
- DownRightVectorBar: '\u2957',
- DownTee: '\u22A4',
- DownTeeArrow: '\u21A7',
- drbkarow: '\u2910',
- drcorn: '\u231F',
- drcrop: '\u230C',
- Dscr: '\uD835\uDC9F',
- dscr: '\uD835\uDCB9',
- DScy: '\u0405',
- dscy: '\u0455',
- dsol: '\u29F6',
- Dstrok: '\u0110',
- dstrok: '\u0111',
- dtdot: '\u22F1',
- dtri: '\u25BF',
- dtrif: '\u25BE',
- duarr: '\u21F5',
- duhar: '\u296F',
- dwangle: '\u29A6',
- DZcy: '\u040F',
- dzcy: '\u045F',
- dzigrarr: '\u27FF',
- Eacute: '\u00C9',
- eacute: '\u00E9',
- easter: '\u2A6E',
- Ecaron: '\u011A',
- ecaron: '\u011B',
- ecir: '\u2256',
- Ecirc: '\u00CA',
- ecirc: '\u00EA',
- ecolon: '\u2255',
- Ecy: '\u042D',
- ecy: '\u044D',
- eDDot: '\u2A77',
- Edot: '\u0116',
- eDot: '\u2251',
- edot: '\u0117',
- ee: '\u2147',
- efDot: '\u2252',
- Efr: '\uD835\uDD08',
- efr: '\uD835\uDD22',
- eg: '\u2A9A',
- Egrave: '\u00C8',
- egrave: '\u00E8',
- egs: '\u2A96',
- egsdot: '\u2A98',
- el: '\u2A99',
- Element: '\u2208',
- elinters: '\u23E7',
- ell: '\u2113',
- els: '\u2A95',
- elsdot: '\u2A97',
- Emacr: '\u0112',
- emacr: '\u0113',
- empty: '\u2205',
- emptyset: '\u2205',
- EmptySmallSquare: '\u25FB',
- emptyv: '\u2205',
- EmptyVerySmallSquare: '\u25AB',
- emsp: '\u2003',
- emsp13: '\u2004',
- emsp14: '\u2005',
- ENG: '\u014A',
- eng: '\u014B',
- ensp: '\u2002',
- Eogon: '\u0118',
- eogon: '\u0119',
- Eopf: '\uD835\uDD3C',
- eopf: '\uD835\uDD56',
- epar: '\u22D5',
- eparsl: '\u29E3',
- eplus: '\u2A71',
- epsi: '\u03B5',
- Epsilon: '\u0395',
- epsilon: '\u03B5',
- epsiv: '\u03F5',
- eqcirc: '\u2256',
- eqcolon: '\u2255',
- eqsim: '\u2242',
- eqslantgtr: '\u2A96',
- eqslantless: '\u2A95',
- Equal: '\u2A75',
- equals: '\u003D',
- EqualTilde: '\u2242',
- equest: '\u225F',
- Equilibrium: '\u21CC',
- equiv: '\u2261',
- equivDD: '\u2A78',
- eqvparsl: '\u29E5',
- erarr: '\u2971',
- erDot: '\u2253',
- Escr: '\u2130',
- escr: '\u212F',
- esdot: '\u2250',
- Esim: '\u2A73',
- esim: '\u2242',
- Eta: '\u0397',
- eta: '\u03B7',
- ETH: '\u00D0',
- eth: '\u00F0',
- Euml: '\u00CB',
- euml: '\u00EB',
- euro: '\u20AC',
- excl: '\u0021',
- exist: '\u2203',
- Exists: '\u2203',
- expectation: '\u2130',
- ExponentialE: '\u2147',
- exponentiale: '\u2147',
- fallingdotseq: '\u2252',
- Fcy: '\u0424',
- fcy: '\u0444',
- female: '\u2640',
- ffilig: '\uFB03',
- fflig: '\uFB00',
- ffllig: '\uFB04',
- Ffr: '\uD835\uDD09',
- ffr: '\uD835\uDD23',
- filig: '\uFB01',
- FilledSmallSquare: '\u25FC',
- FilledVerySmallSquare: '\u25AA',
- fjlig: '\u0066\u006A',
- flat: '\u266D',
- fllig: '\uFB02',
- fltns: '\u25B1',
- fnof: '\u0192',
- Fopf: '\uD835\uDD3D',
- fopf: '\uD835\uDD57',
- ForAll: '\u2200',
- forall: '\u2200',
- fork: '\u22D4',
- forkv: '\u2AD9',
- Fouriertrf: '\u2131',
- fpartint: '\u2A0D',
- frac12: '\u00BD',
- frac13: '\u2153',
- frac14: '\u00BC',
- frac15: '\u2155',
- frac16: '\u2159',
- frac18: '\u215B',
- frac23: '\u2154',
- frac25: '\u2156',
- frac34: '\u00BE',
- frac35: '\u2157',
- frac38: '\u215C',
- frac45: '\u2158',
- frac56: '\u215A',
- frac58: '\u215D',
- frac78: '\u215E',
- frasl: '\u2044',
- frown: '\u2322',
- Fscr: '\u2131',
- fscr: '\uD835\uDCBB',
- gacute: '\u01F5',
- Gamma: '\u0393',
- gamma: '\u03B3',
- Gammad: '\u03DC',
- gammad: '\u03DD',
- gap: '\u2A86',
- Gbreve: '\u011E',
- gbreve: '\u011F',
- Gcedil: '\u0122',
- Gcirc: '\u011C',
- gcirc: '\u011D',
- Gcy: '\u0413',
- gcy: '\u0433',
- Gdot: '\u0120',
- gdot: '\u0121',
- gE: '\u2267',
- ge: '\u2265',
- gEl: '\u2A8C',
- gel: '\u22DB',
- geq: '\u2265',
- geqq: '\u2267',
- geqslant: '\u2A7E',
- ges: '\u2A7E',
- gescc: '\u2AA9',
- gesdot: '\u2A80',
- gesdoto: '\u2A82',
- gesdotol: '\u2A84',
- gesl: '\u22DB\uFE00',
- gesles: '\u2A94',
- Gfr: '\uD835\uDD0A',
- gfr: '\uD835\uDD24',
- Gg: '\u22D9',
- gg: '\u226B',
- ggg: '\u22D9',
- gimel: '\u2137',
- GJcy: '\u0403',
- gjcy: '\u0453',
- gl: '\u2277',
- gla: '\u2AA5',
- glE: '\u2A92',
- glj: '\u2AA4',
- gnap: '\u2A8A',
- gnapprox: '\u2A8A',
- gnE: '\u2269',
- gne: '\u2A88',
- gneq: '\u2A88',
- gneqq: '\u2269',
- gnsim: '\u22E7',
- Gopf: '\uD835\uDD3E',
- gopf: '\uD835\uDD58',
- grave: '\u0060',
- GreaterEqual: '\u2265',
- GreaterEqualLess: '\u22DB',
- GreaterFullEqual: '\u2267',
- GreaterGreater: '\u2AA2',
- GreaterLess: '\u2277',
- GreaterSlantEqual: '\u2A7E',
- GreaterTilde: '\u2273',
- Gscr: '\uD835\uDCA2',
- gscr: '\u210A',
- gsim: '\u2273',
- gsime: '\u2A8E',
- gsiml: '\u2A90',
- Gt: '\u226B',
- GT: '\u003E',
- gt: '\u003E',
- gtcc: '\u2AA7',
- gtcir: '\u2A7A',
- gtdot: '\u22D7',
- gtlPar: '\u2995',
- gtquest: '\u2A7C',
- gtrapprox: '\u2A86',
- gtrarr: '\u2978',
- gtrdot: '\u22D7',
- gtreqless: '\u22DB',
- gtreqqless: '\u2A8C',
- gtrless: '\u2277',
- gtrsim: '\u2273',
- gvertneqq: '\u2269\uFE00',
- gvnE: '\u2269\uFE00',
- Hacek: '\u02C7',
- hairsp: '\u200A',
- half: '\u00BD',
- hamilt: '\u210B',
- HARDcy: '\u042A',
- hardcy: '\u044A',
- hArr: '\u21D4',
- harr: '\u2194',
- harrcir: '\u2948',
- harrw: '\u21AD',
- Hat: '\u005E',
- hbar: '\u210F',
- Hcirc: '\u0124',
- hcirc: '\u0125',
- hearts: '\u2665',
- heartsuit: '\u2665',
- hellip: '\u2026',
- hercon: '\u22B9',
- Hfr: '\u210C',
- hfr: '\uD835\uDD25',
- HilbertSpace: '\u210B',
- hksearow: '\u2925',
- hkswarow: '\u2926',
- hoarr: '\u21FF',
- homtht: '\u223B',
- hookleftarrow: '\u21A9',
- hookrightarrow: '\u21AA',
- Hopf: '\u210D',
- hopf: '\uD835\uDD59',
- horbar: '\u2015',
- HorizontalLine: '\u2500',
- Hscr: '\u210B',
- hscr: '\uD835\uDCBD',
- hslash: '\u210F',
- Hstrok: '\u0126',
- hstrok: '\u0127',
- HumpDownHump: '\u224E',
- HumpEqual: '\u224F',
- hybull: '\u2043',
- hyphen: '\u2010',
- Iacute: '\u00CD',
- iacute: '\u00ED',
- ic: '\u2063',
- Icirc: '\u00CE',
- icirc: '\u00EE',
- Icy: '\u0418',
- icy: '\u0438',
- Idot: '\u0130',
- IEcy: '\u0415',
- iecy: '\u0435',
- iexcl: '\u00A1',
- iff: '\u21D4',
- Ifr: '\u2111',
- ifr: '\uD835\uDD26',
- Igrave: '\u00CC',
- igrave: '\u00EC',
- ii: '\u2148',
- iiiint: '\u2A0C',
- iiint: '\u222D',
- iinfin: '\u29DC',
- iiota: '\u2129',
- IJlig: '\u0132',
- ijlig: '\u0133',
- Im: '\u2111',
- Imacr: '\u012A',
- imacr: '\u012B',
- image: '\u2111',
- ImaginaryI: '\u2148',
- imagline: '\u2110',
- imagpart: '\u2111',
- imath: '\u0131',
- imof: '\u22B7',
- imped: '\u01B5',
- Implies: '\u21D2',
- in: '\u2208',
- incare: '\u2105',
- infin: '\u221E',
- infintie: '\u29DD',
- inodot: '\u0131',
- Int: '\u222C',
- int: '\u222B',
- intcal: '\u22BA',
- integers: '\u2124',
- Integral: '\u222B',
- intercal: '\u22BA',
- Intersection: '\u22C2',
- intlarhk: '\u2A17',
- intprod: '\u2A3C',
- InvisibleComma: '\u2063',
- InvisibleTimes: '\u2062',
- IOcy: '\u0401',
- iocy: '\u0451',
- Iogon: '\u012E',
- iogon: '\u012F',
- Iopf: '\uD835\uDD40',
- iopf: '\uD835\uDD5A',
- Iota: '\u0399',
- iota: '\u03B9',
- iprod: '\u2A3C',
- iquest: '\u00BF',
- Iscr: '\u2110',
- iscr: '\uD835\uDCBE',
- isin: '\u2208',
- isindot: '\u22F5',
- isinE: '\u22F9',
- isins: '\u22F4',
- isinsv: '\u22F3',
- isinv: '\u2208',
- it: '\u2062',
- Itilde: '\u0128',
- itilde: '\u0129',
- Iukcy: '\u0406',
- iukcy: '\u0456',
- Iuml: '\u00CF',
- iuml: '\u00EF',
- Jcirc: '\u0134',
- jcirc: '\u0135',
- Jcy: '\u0419',
- jcy: '\u0439',
- Jfr: '\uD835\uDD0D',
- jfr: '\uD835\uDD27',
- jmath: '\u0237',
- Jopf: '\uD835\uDD41',
- jopf: '\uD835\uDD5B',
- Jscr: '\uD835\uDCA5',
- jscr: '\uD835\uDCBF',
- Jsercy: '\u0408',
- jsercy: '\u0458',
- Jukcy: '\u0404',
- jukcy: '\u0454',
- Kappa: '\u039A',
- kappa: '\u03BA',
- kappav: '\u03F0',
- Kcedil: '\u0136',
- kcedil: '\u0137',
- Kcy: '\u041A',
- kcy: '\u043A',
- Kfr: '\uD835\uDD0E',
- kfr: '\uD835\uDD28',
- kgreen: '\u0138',
- KHcy: '\u0425',
- khcy: '\u0445',
- KJcy: '\u040C',
- kjcy: '\u045C',
- Kopf: '\uD835\uDD42',
- kopf: '\uD835\uDD5C',
- Kscr: '\uD835\uDCA6',
- kscr: '\uD835\uDCC0',
- lAarr: '\u21DA',
- Lacute: '\u0139',
- lacute: '\u013A',
- laemptyv: '\u29B4',
- lagran: '\u2112',
- Lambda: '\u039B',
- lambda: '\u03BB',
- Lang: '\u27EA',
- lang: '\u27E8',
- langd: '\u2991',
- langle: '\u27E8',
- lap: '\u2A85',
- Laplacetrf: '\u2112',
- laquo: '\u00AB',
- Larr: '\u219E',
- lArr: '\u21D0',
- larr: '\u2190',
- larrb: '\u21E4',
- larrbfs: '\u291F',
- larrfs: '\u291D',
- larrhk: '\u21A9',
- larrlp: '\u21AB',
- larrpl: '\u2939',
- larrsim: '\u2973',
- larrtl: '\u21A2',
- lat: '\u2AAB',
- lAtail: '\u291B',
- latail: '\u2919',
- late: '\u2AAD',
- lates: '\u2AAD\uFE00',
- lBarr: '\u290E',
- lbarr: '\u290C',
- lbbrk: '\u2772',
- lbrace: '\u007B',
- lbrack: '\u005B',
- lbrke: '\u298B',
- lbrksld: '\u298F',
- lbrkslu: '\u298D',
- Lcaron: '\u013D',
- lcaron: '\u013E',
- Lcedil: '\u013B',
- lcedil: '\u013C',
- lceil: '\u2308',
- lcub: '\u007B',
- Lcy: '\u041B',
- lcy: '\u043B',
- ldca: '\u2936',
- ldquo: '\u201C',
- ldquor: '\u201E',
- ldrdhar: '\u2967',
- ldrushar: '\u294B',
- ldsh: '\u21B2',
- lE: '\u2266',
- le: '\u2264',
- LeftAngleBracket: '\u27E8',
- LeftArrow: '\u2190',
- Leftarrow: '\u21D0',
- leftarrow: '\u2190',
- LeftArrowBar: '\u21E4',
- LeftArrowRightArrow: '\u21C6',
- leftarrowtail: '\u21A2',
- LeftCeiling: '\u2308',
- LeftDoubleBracket: '\u27E6',
- LeftDownTeeVector: '\u2961',
- LeftDownVector: '\u21C3',
- LeftDownVectorBar: '\u2959',
- LeftFloor: '\u230A',
- leftharpoondown: '\u21BD',
- leftharpoonup: '\u21BC',
- leftleftarrows: '\u21C7',
- LeftRightArrow: '\u2194',
- Leftrightarrow: '\u21D4',
- leftrightarrow: '\u2194',
- leftrightarrows: '\u21C6',
- leftrightharpoons: '\u21CB',
- leftrightsquigarrow: '\u21AD',
- LeftRightVector: '\u294E',
- LeftTee: '\u22A3',
- LeftTeeArrow: '\u21A4',
- LeftTeeVector: '\u295A',
- leftthreetimes: '\u22CB',
- LeftTriangle: '\u22B2',
- LeftTriangleBar: '\u29CF',
- LeftTriangleEqual: '\u22B4',
- LeftUpDownVector: '\u2951',
- LeftUpTeeVector: '\u2960',
- LeftUpVector: '\u21BF',
- LeftUpVectorBar: '\u2958',
- LeftVector: '\u21BC',
- LeftVectorBar: '\u2952',
- lEg: '\u2A8B',
- leg: '\u22DA',
- leq: '\u2264',
- leqq: '\u2266',
- leqslant: '\u2A7D',
- les: '\u2A7D',
- lescc: '\u2AA8',
- lesdot: '\u2A7F',
- lesdoto: '\u2A81',
- lesdotor: '\u2A83',
- lesg: '\u22DA\uFE00',
- lesges: '\u2A93',
- lessapprox: '\u2A85',
- lessdot: '\u22D6',
- lesseqgtr: '\u22DA',
- lesseqqgtr: '\u2A8B',
- LessEqualGreater: '\u22DA',
- LessFullEqual: '\u2266',
- LessGreater: '\u2276',
- lessgtr: '\u2276',
- LessLess: '\u2AA1',
- lesssim: '\u2272',
- LessSlantEqual: '\u2A7D',
- LessTilde: '\u2272',
- lfisht: '\u297C',
- lfloor: '\u230A',
- Lfr: '\uD835\uDD0F',
- lfr: '\uD835\uDD29',
- lg: '\u2276',
- lgE: '\u2A91',
- lHar: '\u2962',
- lhard: '\u21BD',
- lharu: '\u21BC',
- lharul: '\u296A',
- lhblk: '\u2584',
- LJcy: '\u0409',
- ljcy: '\u0459',
- Ll: '\u22D8',
- ll: '\u226A',
- llarr: '\u21C7',
- llcorner: '\u231E',
- Lleftarrow: '\u21DA',
- llhard: '\u296B',
- lltri: '\u25FA',
- Lmidot: '\u013F',
- lmidot: '\u0140',
- lmoust: '\u23B0',
- lmoustache: '\u23B0',
- lnap: '\u2A89',
- lnapprox: '\u2A89',
- lnE: '\u2268',
- lne: '\u2A87',
- lneq: '\u2A87',
- lneqq: '\u2268',
- lnsim: '\u22E6',
- loang: '\u27EC',
- loarr: '\u21FD',
- lobrk: '\u27E6',
- LongLeftArrow: '\u27F5',
- Longleftarrow: '\u27F8',
- longleftarrow: '\u27F5',
- LongLeftRightArrow: '\u27F7',
- Longleftrightarrow: '\u27FA',
- longleftrightarrow: '\u27F7',
- longmapsto: '\u27FC',
- LongRightArrow: '\u27F6',
- Longrightarrow: '\u27F9',
- longrightarrow: '\u27F6',
- looparrowleft: '\u21AB',
- looparrowright: '\u21AC',
- lopar: '\u2985',
- Lopf: '\uD835\uDD43',
- lopf: '\uD835\uDD5D',
- loplus: '\u2A2D',
- lotimes: '\u2A34',
- lowast: '\u2217',
- lowbar: '\u005F',
- LowerLeftArrow: '\u2199',
- LowerRightArrow: '\u2198',
- loz: '\u25CA',
- lozenge: '\u25CA',
- lozf: '\u29EB',
- lpar: '\u0028',
- lparlt: '\u2993',
- lrarr: '\u21C6',
- lrcorner: '\u231F',
- lrhar: '\u21CB',
- lrhard: '\u296D',
- lrm: '\u200E',
- lrtri: '\u22BF',
- lsaquo: '\u2039',
- Lscr: '\u2112',
- lscr: '\uD835\uDCC1',
- Lsh: '\u21B0',
- lsh: '\u21B0',
- lsim: '\u2272',
- lsime: '\u2A8D',
- lsimg: '\u2A8F',
- lsqb: '\u005B',
- lsquo: '\u2018',
- lsquor: '\u201A',
- Lstrok: '\u0141',
- lstrok: '\u0142',
- Lt: '\u226A',
- LT: '\u003C',
- lt: '\u003C',
- ltcc: '\u2AA6',
- ltcir: '\u2A79',
- ltdot: '\u22D6',
- lthree: '\u22CB',
- ltimes: '\u22C9',
- ltlarr: '\u2976',
- ltquest: '\u2A7B',
- ltri: '\u25C3',
- ltrie: '\u22B4',
- ltrif: '\u25C2',
- ltrPar: '\u2996',
- lurdshar: '\u294A',
- luruhar: '\u2966',
- lvertneqq: '\u2268\uFE00',
- lvnE: '\u2268\uFE00',
- macr: '\u00AF',
- male: '\u2642',
- malt: '\u2720',
- maltese: '\u2720',
- Map: '\u2905',
- map: '\u21A6',
- mapsto: '\u21A6',
- mapstodown: '\u21A7',
- mapstoleft: '\u21A4',
- mapstoup: '\u21A5',
- marker: '\u25AE',
- mcomma: '\u2A29',
- Mcy: '\u041C',
- mcy: '\u043C',
- mdash: '\u2014',
- mDDot: '\u223A',
- measuredangle: '\u2221',
- MediumSpace: '\u205F',
- Mellintrf: '\u2133',
- Mfr: '\uD835\uDD10',
- mfr: '\uD835\uDD2A',
- mho: '\u2127',
- micro: '\u00B5',
- mid: '\u2223',
- midast: '\u002A',
- midcir: '\u2AF0',
- middot: '\u00B7',
- minus: '\u2212',
- minusb: '\u229F',
- minusd: '\u2238',
- minusdu: '\u2A2A',
- MinusPlus: '\u2213',
- mlcp: '\u2ADB',
- mldr: '\u2026',
- mnplus: '\u2213',
- models: '\u22A7',
- Mopf: '\uD835\uDD44',
- mopf: '\uD835\uDD5E',
- mp: '\u2213',
- Mscr: '\u2133',
- mscr: '\uD835\uDCC2',
- mstpos: '\u223E',
- Mu: '\u039C',
- mu: '\u03BC',
- multimap: '\u22B8',
- mumap: '\u22B8',
- nabla: '\u2207',
- Nacute: '\u0143',
- nacute: '\u0144',
- nang: '\u2220\u20D2',
- nap: '\u2249',
- napE: '\u2A70\u0338',
- napid: '\u224B\u0338',
- napos: '\u0149',
- napprox: '\u2249',
- natur: '\u266E',
- natural: '\u266E',
- naturals: '\u2115',
- nbsp: '\u00A0',
- nbump: '\u224E\u0338',
- nbumpe: '\u224F\u0338',
- ncap: '\u2A43',
- Ncaron: '\u0147',
- ncaron: '\u0148',
- Ncedil: '\u0145',
- ncedil: '\u0146',
- ncong: '\u2247',
- ncongdot: '\u2A6D\u0338',
- ncup: '\u2A42',
- Ncy: '\u041D',
- ncy: '\u043D',
- ndash: '\u2013',
- ne: '\u2260',
- nearhk: '\u2924',
- neArr: '\u21D7',
- nearr: '\u2197',
- nearrow: '\u2197',
- nedot: '\u2250\u0338',
- NegativeMediumSpace: '\u200B',
- NegativeThickSpace: '\u200B',
- NegativeThinSpace: '\u200B',
- NegativeVeryThinSpace: '\u200B',
- nequiv: '\u2262',
- nesear: '\u2928',
- nesim: '\u2242\u0338',
- NestedGreaterGreater: '\u226B',
- NestedLessLess: '\u226A',
- NewLine: '\u000A',
- nexist: '\u2204',
- nexists: '\u2204',
- Nfr: '\uD835\uDD11',
- nfr: '\uD835\uDD2B',
- ngE: '\u2267\u0338',
- nge: '\u2271',
- ngeq: '\u2271',
- ngeqq: '\u2267\u0338',
- ngeqslant: '\u2A7E\u0338',
- nges: '\u2A7E\u0338',
- nGg: '\u22D9\u0338',
- ngsim: '\u2275',
- nGt: '\u226B\u20D2',
- ngt: '\u226F',
- ngtr: '\u226F',
- nGtv: '\u226B\u0338',
- nhArr: '\u21CE',
- nharr: '\u21AE',
- nhpar: '\u2AF2',
- ni: '\u220B',
- nis: '\u22FC',
- nisd: '\u22FA',
- niv: '\u220B',
- NJcy: '\u040A',
- njcy: '\u045A',
- nlArr: '\u21CD',
- nlarr: '\u219A',
- nldr: '\u2025',
- nlE: '\u2266\u0338',
- nle: '\u2270',
- nLeftarrow: '\u21CD',
- nleftarrow: '\u219A',
- nLeftrightarrow: '\u21CE',
- nleftrightarrow: '\u21AE',
- nleq: '\u2270',
- nleqq: '\u2266\u0338',
- nleqslant: '\u2A7D\u0338',
- nles: '\u2A7D\u0338',
- nless: '\u226E',
- nLl: '\u22D8\u0338',
- nlsim: '\u2274',
- nLt: '\u226A\u20D2',
- nlt: '\u226E',
- nltri: '\u22EA',
- nltrie: '\u22EC',
- nLtv: '\u226A\u0338',
- nmid: '\u2224',
- NoBreak: '\u2060',
- NonBreakingSpace: '\u00A0',
- Nopf: '\u2115',
- nopf: '\uD835\uDD5F',
- Not: '\u2AEC',
- not: '\u00AC',
- NotCongruent: '\u2262',
- NotCupCap: '\u226D',
- NotDoubleVerticalBar: '\u2226',
- NotElement: '\u2209',
- NotEqual: '\u2260',
- NotEqualTilde: '\u2242\u0338',
- NotExists: '\u2204',
- NotGreater: '\u226F',
- NotGreaterEqual: '\u2271',
- NotGreaterFullEqual: '\u2267\u0338',
- NotGreaterGreater: '\u226B\u0338',
- NotGreaterLess: '\u2279',
- NotGreaterSlantEqual: '\u2A7E\u0338',
- NotGreaterTilde: '\u2275',
- NotHumpDownHump: '\u224E\u0338',
- NotHumpEqual: '\u224F\u0338',
- notin: '\u2209',
- notindot: '\u22F5\u0338',
- notinE: '\u22F9\u0338',
- notinva: '\u2209',
- notinvb: '\u22F7',
- notinvc: '\u22F6',
- NotLeftTriangle: '\u22EA',
- NotLeftTriangleBar: '\u29CF\u0338',
- NotLeftTriangleEqual: '\u22EC',
- NotLess: '\u226E',
- NotLessEqual: '\u2270',
- NotLessGreater: '\u2278',
- NotLessLess: '\u226A\u0338',
- NotLessSlantEqual: '\u2A7D\u0338',
- NotLessTilde: '\u2274',
- NotNestedGreaterGreater: '\u2AA2\u0338',
- NotNestedLessLess: '\u2AA1\u0338',
- notni: '\u220C',
- notniva: '\u220C',
- notnivb: '\u22FE',
- notnivc: '\u22FD',
- NotPrecedes: '\u2280',
- NotPrecedesEqual: '\u2AAF\u0338',
- NotPrecedesSlantEqual: '\u22E0',
- NotReverseElement: '\u220C',
- NotRightTriangle: '\u22EB',
- NotRightTriangleBar: '\u29D0\u0338',
- NotRightTriangleEqual: '\u22ED',
- NotSquareSubset: '\u228F\u0338',
- NotSquareSubsetEqual: '\u22E2',
- NotSquareSuperset: '\u2290\u0338',
- NotSquareSupersetEqual: '\u22E3',
- NotSubset: '\u2282\u20D2',
- NotSubsetEqual: '\u2288',
- NotSucceeds: '\u2281',
- NotSucceedsEqual: '\u2AB0\u0338',
- NotSucceedsSlantEqual: '\u22E1',
- NotSucceedsTilde: '\u227F\u0338',
- NotSuperset: '\u2283\u20D2',
- NotSupersetEqual: '\u2289',
- NotTilde: '\u2241',
- NotTildeEqual: '\u2244',
- NotTildeFullEqual: '\u2247',
- NotTildeTilde: '\u2249',
- NotVerticalBar: '\u2224',
- npar: '\u2226',
- nparallel: '\u2226',
- nparsl: '\u2AFD\u20E5',
- npart: '\u2202\u0338',
- npolint: '\u2A14',
- npr: '\u2280',
- nprcue: '\u22E0',
- npre: '\u2AAF\u0338',
- nprec: '\u2280',
- npreceq: '\u2AAF\u0338',
- nrArr: '\u21CF',
- nrarr: '\u219B',
- nrarrc: '\u2933\u0338',
- nrarrw: '\u219D\u0338',
- nRightarrow: '\u21CF',
- nrightarrow: '\u219B',
- nrtri: '\u22EB',
- nrtrie: '\u22ED',
- nsc: '\u2281',
- nsccue: '\u22E1',
- nsce: '\u2AB0\u0338',
- Nscr: '\uD835\uDCA9',
- nscr: '\uD835\uDCC3',
- nshortmid: '\u2224',
- nshortparallel: '\u2226',
- nsim: '\u2241',
- nsime: '\u2244',
- nsimeq: '\u2244',
- nsmid: '\u2224',
- nspar: '\u2226',
- nsqsube: '\u22E2',
- nsqsupe: '\u22E3',
- nsub: '\u2284',
- nsubE: '\u2AC5\u0338',
- nsube: '\u2288',
- nsubset: '\u2282\u20D2',
- nsubseteq: '\u2288',
- nsubseteqq: '\u2AC5\u0338',
- nsucc: '\u2281',
- nsucceq: '\u2AB0\u0338',
- nsup: '\u2285',
- nsupE: '\u2AC6\u0338',
- nsupe: '\u2289',
- nsupset: '\u2283\u20D2',
- nsupseteq: '\u2289',
- nsupseteqq: '\u2AC6\u0338',
- ntgl: '\u2279',
- Ntilde: '\u00D1',
- ntilde: '\u00F1',
- ntlg: '\u2278',
- ntriangleleft: '\u22EA',
- ntrianglelefteq: '\u22EC',
- ntriangleright: '\u22EB',
- ntrianglerighteq: '\u22ED',
- Nu: '\u039D',
- nu: '\u03BD',
- num: '\u0023',
- numero: '\u2116',
- numsp: '\u2007',
- nvap: '\u224D\u20D2',
- nVDash: '\u22AF',
- nVdash: '\u22AE',
- nvDash: '\u22AD',
- nvdash: '\u22AC',
- nvge: '\u2265\u20D2',
- nvgt: '\u003E\u20D2',
- nvHarr: '\u2904',
- nvinfin: '\u29DE',
- nvlArr: '\u2902',
- nvle: '\u2264\u20D2',
- nvlt: '\u003C\u20D2',
- nvltrie: '\u22B4\u20D2',
- nvrArr: '\u2903',
- nvrtrie: '\u22B5\u20D2',
- nvsim: '\u223C\u20D2',
- nwarhk: '\u2923',
- nwArr: '\u21D6',
- nwarr: '\u2196',
- nwarrow: '\u2196',
- nwnear: '\u2927',
- Oacute: '\u00D3',
- oacute: '\u00F3',
- oast: '\u229B',
- ocir: '\u229A',
- Ocirc: '\u00D4',
- ocirc: '\u00F4',
- Ocy: '\u041E',
- ocy: '\u043E',
- odash: '\u229D',
- Odblac: '\u0150',
- odblac: '\u0151',
- odiv: '\u2A38',
- odot: '\u2299',
- odsold: '\u29BC',
- OElig: '\u0152',
- oelig: '\u0153',
- ofcir: '\u29BF',
- Ofr: '\uD835\uDD12',
- ofr: '\uD835\uDD2C',
- ogon: '\u02DB',
- Ograve: '\u00D2',
- ograve: '\u00F2',
- ogt: '\u29C1',
- ohbar: '\u29B5',
- ohm: '\u03A9',
- oint: '\u222E',
- olarr: '\u21BA',
- olcir: '\u29BE',
- olcross: '\u29BB',
- oline: '\u203E',
- olt: '\u29C0',
- Omacr: '\u014C',
- omacr: '\u014D',
- Omega: '\u03A9',
- omega: '\u03C9',
- Omicron: '\u039F',
- omicron: '\u03BF',
- omid: '\u29B6',
- ominus: '\u2296',
- Oopf: '\uD835\uDD46',
- oopf: '\uD835\uDD60',
- opar: '\u29B7',
- OpenCurlyDoubleQuote: '\u201C',
- OpenCurlyQuote: '\u2018',
- operp: '\u29B9',
- oplus: '\u2295',
- Or: '\u2A54',
- or: '\u2228',
- orarr: '\u21BB',
- ord: '\u2A5D',
- order: '\u2134',
- orderof: '\u2134',
- ordf: '\u00AA',
- ordm: '\u00BA',
- origof: '\u22B6',
- oror: '\u2A56',
- orslope: '\u2A57',
- orv: '\u2A5B',
- oS: '\u24C8',
- Oscr: '\uD835\uDCAA',
- oscr: '\u2134',
- Oslash: '\u00D8',
- oslash: '\u00F8',
- osol: '\u2298',
- Otilde: '\u00D5',
- otilde: '\u00F5',
- Otimes: '\u2A37',
- otimes: '\u2297',
- otimesas: '\u2A36',
- Ouml: '\u00D6',
- ouml: '\u00F6',
- ovbar: '\u233D',
- OverBar: '\u203E',
- OverBrace: '\u23DE',
- OverBracket: '\u23B4',
- OverParenthesis: '\u23DC',
- par: '\u2225',
- para: '\u00B6',
- parallel: '\u2225',
- parsim: '\u2AF3',
- parsl: '\u2AFD',
- part: '\u2202',
- PartialD: '\u2202',
- Pcy: '\u041F',
- pcy: '\u043F',
- percnt: '\u0025',
- period: '\u002E',
- permil: '\u2030',
- perp: '\u22A5',
- pertenk: '\u2031',
- Pfr: '\uD835\uDD13',
- pfr: '\uD835\uDD2D',
- Phi: '\u03A6',
- phi: '\u03C6',
- phiv: '\u03D5',
- phmmat: '\u2133',
- phone: '\u260E',
- Pi: '\u03A0',
- pi: '\u03C0',
- pitchfork: '\u22D4',
- piv: '\u03D6',
- planck: '\u210F',
- planckh: '\u210E',
- plankv: '\u210F',
- plus: '\u002B',
- plusacir: '\u2A23',
- plusb: '\u229E',
- pluscir: '\u2A22',
- plusdo: '\u2214',
- plusdu: '\u2A25',
- pluse: '\u2A72',
- PlusMinus: '\u00B1',
- plusmn: '\u00B1',
- plussim: '\u2A26',
- plustwo: '\u2A27',
- pm: '\u00B1',
- Poincareplane: '\u210C',
- pointint: '\u2A15',
- Popf: '\u2119',
- popf: '\uD835\uDD61',
- pound: '\u00A3',
- Pr: '\u2ABB',
- pr: '\u227A',
- prap: '\u2AB7',
- prcue: '\u227C',
- prE: '\u2AB3',
- pre: '\u2AAF',
- prec: '\u227A',
- precapprox: '\u2AB7',
- preccurlyeq: '\u227C',
- Precedes: '\u227A',
- PrecedesEqual: '\u2AAF',
- PrecedesSlantEqual: '\u227C',
- PrecedesTilde: '\u227E',
- preceq: '\u2AAF',
- precnapprox: '\u2AB9',
- precneqq: '\u2AB5',
- precnsim: '\u22E8',
- precsim: '\u227E',
- Prime: '\u2033',
- prime: '\u2032',
- primes: '\u2119',
- prnap: '\u2AB9',
- prnE: '\u2AB5',
- prnsim: '\u22E8',
- prod: '\u220F',
- Product: '\u220F',
- profalar: '\u232E',
- profline: '\u2312',
- profsurf: '\u2313',
- prop: '\u221D',
- Proportion: '\u2237',
- Proportional: '\u221D',
- propto: '\u221D',
- prsim: '\u227E',
- prurel: '\u22B0',
- Pscr: '\uD835\uDCAB',
- pscr: '\uD835\uDCC5',
- Psi: '\u03A8',
- psi: '\u03C8',
- puncsp: '\u2008',
- Qfr: '\uD835\uDD14',
- qfr: '\uD835\uDD2E',
- qint: '\u2A0C',
- Qopf: '\u211A',
- qopf: '\uD835\uDD62',
- qprime: '\u2057',
- Qscr: '\uD835\uDCAC',
- qscr: '\uD835\uDCC6',
- quaternions: '\u210D',
- quatint: '\u2A16',
- quest: '\u003F',
- questeq: '\u225F',
- QUOT: '\u0022',
- quot: '\u0022',
- rAarr: '\u21DB',
- race: '\u223D\u0331',
- Racute: '\u0154',
- racute: '\u0155',
- radic: '\u221A',
- raemptyv: '\u29B3',
- Rang: '\u27EB',
- rang: '\u27E9',
- rangd: '\u2992',
- range: '\u29A5',
- rangle: '\u27E9',
- raquo: '\u00BB',
- Rarr: '\u21A0',
- rArr: '\u21D2',
- rarr: '\u2192',
- rarrap: '\u2975',
- rarrb: '\u21E5',
- rarrbfs: '\u2920',
- rarrc: '\u2933',
- rarrfs: '\u291E',
- rarrhk: '\u21AA',
- rarrlp: '\u21AC',
- rarrpl: '\u2945',
- rarrsim: '\u2974',
- Rarrtl: '\u2916',
- rarrtl: '\u21A3',
- rarrw: '\u219D',
- rAtail: '\u291C',
- ratail: '\u291A',
- ratio: '\u2236',
- rationals: '\u211A',
- RBarr: '\u2910',
- rBarr: '\u290F',
- rbarr: '\u290D',
- rbbrk: '\u2773',
- rbrace: '\u007D',
- rbrack: '\u005D',
- rbrke: '\u298C',
- rbrksld: '\u298E',
- rbrkslu: '\u2990',
- Rcaron: '\u0158',
- rcaron: '\u0159',
- Rcedil: '\u0156',
- rcedil: '\u0157',
- rceil: '\u2309',
- rcub: '\u007D',
- Rcy: '\u0420',
- rcy: '\u0440',
- rdca: '\u2937',
- rdldhar: '\u2969',
- rdquo: '\u201D',
- rdquor: '\u201D',
- rdsh: '\u21B3',
- Re: '\u211C',
- real: '\u211C',
- realine: '\u211B',
- realpart: '\u211C',
- reals: '\u211D',
- rect: '\u25AD',
- REG: '\u00AE',
- reg: '\u00AE',
- ReverseElement: '\u220B',
- ReverseEquilibrium: '\u21CB',
- ReverseUpEquilibrium: '\u296F',
- rfisht: '\u297D',
- rfloor: '\u230B',
- Rfr: '\u211C',
- rfr: '\uD835\uDD2F',
- rHar: '\u2964',
- rhard: '\u21C1',
- rharu: '\u21C0',
- rharul: '\u296C',
- Rho: '\u03A1',
- rho: '\u03C1',
- rhov: '\u03F1',
- RightAngleBracket: '\u27E9',
- RightArrow: '\u2192',
- Rightarrow: '\u21D2',
- rightarrow: '\u2192',
- RightArrowBar: '\u21E5',
- RightArrowLeftArrow: '\u21C4',
- rightarrowtail: '\u21A3',
- RightCeiling: '\u2309',
- RightDoubleBracket: '\u27E7',
- RightDownTeeVector: '\u295D',
- RightDownVector: '\u21C2',
- RightDownVectorBar: '\u2955',
- RightFloor: '\u230B',
- rightharpoondown: '\u21C1',
- rightharpoonup: '\u21C0',
- rightleftarrows: '\u21C4',
- rightleftharpoons: '\u21CC',
- rightrightarrows: '\u21C9',
- rightsquigarrow: '\u219D',
- RightTee: '\u22A2',
- RightTeeArrow: '\u21A6',
- RightTeeVector: '\u295B',
- rightthreetimes: '\u22CC',
- RightTriangle: '\u22B3',
- RightTriangleBar: '\u29D0',
- RightTriangleEqual: '\u22B5',
- RightUpDownVector: '\u294F',
- RightUpTeeVector: '\u295C',
- RightUpVector: '\u21BE',
- RightUpVectorBar: '\u2954',
- RightVector: '\u21C0',
- RightVectorBar: '\u2953',
- ring: '\u02DA',
- risingdotseq: '\u2253',
- rlarr: '\u21C4',
- rlhar: '\u21CC',
- rlm: '\u200F',
- rmoust: '\u23B1',
- rmoustache: '\u23B1',
- rnmid: '\u2AEE',
- roang: '\u27ED',
- roarr: '\u21FE',
- robrk: '\u27E7',
- ropar: '\u2986',
- Ropf: '\u211D',
- ropf: '\uD835\uDD63',
- roplus: '\u2A2E',
- rotimes: '\u2A35',
- RoundImplies: '\u2970',
- rpar: '\u0029',
- rpargt: '\u2994',
- rppolint: '\u2A12',
- rrarr: '\u21C9',
- Rrightarrow: '\u21DB',
- rsaquo: '\u203A',
- Rscr: '\u211B',
- rscr: '\uD835\uDCC7',
- Rsh: '\u21B1',
- rsh: '\u21B1',
- rsqb: '\u005D',
- rsquo: '\u2019',
- rsquor: '\u2019',
- rthree: '\u22CC',
- rtimes: '\u22CA',
- rtri: '\u25B9',
- rtrie: '\u22B5',
- rtrif: '\u25B8',
- rtriltri: '\u29CE',
- RuleDelayed: '\u29F4',
- ruluhar: '\u2968',
- rx: '\u211E',
- Sacute: '\u015A',
- sacute: '\u015B',
- sbquo: '\u201A',
- Sc: '\u2ABC',
- sc: '\u227B',
- scap: '\u2AB8',
- Scaron: '\u0160',
- scaron: '\u0161',
- sccue: '\u227D',
- scE: '\u2AB4',
- sce: '\u2AB0',
- Scedil: '\u015E',
- scedil: '\u015F',
- Scirc: '\u015C',
- scirc: '\u015D',
- scnap: '\u2ABA',
- scnE: '\u2AB6',
- scnsim: '\u22E9',
- scpolint: '\u2A13',
- scsim: '\u227F',
- Scy: '\u0421',
- scy: '\u0441',
- sdot: '\u22C5',
- sdotb: '\u22A1',
- sdote: '\u2A66',
- searhk: '\u2925',
- seArr: '\u21D8',
- searr: '\u2198',
- searrow: '\u2198',
- sect: '\u00A7',
- semi: '\u003B',
- seswar: '\u2929',
- setminus: '\u2216',
- setmn: '\u2216',
- sext: '\u2736',
- Sfr: '\uD835\uDD16',
- sfr: '\uD835\uDD30',
- sfrown: '\u2322',
- sharp: '\u266F',
- SHCHcy: '\u0429',
- shchcy: '\u0449',
- SHcy: '\u0428',
- shcy: '\u0448',
- ShortDownArrow: '\u2193',
- ShortLeftArrow: '\u2190',
- shortmid: '\u2223',
- shortparallel: '\u2225',
- ShortRightArrow: '\u2192',
- ShortUpArrow: '\u2191',
- shy: '\u00AD',
- Sigma: '\u03A3',
- sigma: '\u03C3',
- sigmaf: '\u03C2',
- sigmav: '\u03C2',
- sim: '\u223C',
- simdot: '\u2A6A',
- sime: '\u2243',
- simeq: '\u2243',
- simg: '\u2A9E',
- simgE: '\u2AA0',
- siml: '\u2A9D',
- simlE: '\u2A9F',
- simne: '\u2246',
- simplus: '\u2A24',
- simrarr: '\u2972',
- slarr: '\u2190',
- SmallCircle: '\u2218',
- smallsetminus: '\u2216',
- smashp: '\u2A33',
- smeparsl: '\u29E4',
- smid: '\u2223',
- smile: '\u2323',
- smt: '\u2AAA',
- smte: '\u2AAC',
- smtes: '\u2AAC\uFE00',
- SOFTcy: '\u042C',
- softcy: '\u044C',
- sol: '\u002F',
- solb: '\u29C4',
- solbar: '\u233F',
- Sopf: '\uD835\uDD4A',
- sopf: '\uD835\uDD64',
- spades: '\u2660',
- spadesuit: '\u2660',
- spar: '\u2225',
- sqcap: '\u2293',
- sqcaps: '\u2293\uFE00',
- sqcup: '\u2294',
- sqcups: '\u2294\uFE00',
- Sqrt: '\u221A',
- sqsub: '\u228F',
- sqsube: '\u2291',
- sqsubset: '\u228F',
- sqsubseteq: '\u2291',
- sqsup: '\u2290',
- sqsupe: '\u2292',
- sqsupset: '\u2290',
- sqsupseteq: '\u2292',
- squ: '\u25A1',
- Square: '\u25A1',
- square: '\u25A1',
- SquareIntersection: '\u2293',
- SquareSubset: '\u228F',
- SquareSubsetEqual: '\u2291',
- SquareSuperset: '\u2290',
- SquareSupersetEqual: '\u2292',
- SquareUnion: '\u2294',
- squarf: '\u25AA',
- squf: '\u25AA',
- srarr: '\u2192',
- Sscr: '\uD835\uDCAE',
- sscr: '\uD835\uDCC8',
- ssetmn: '\u2216',
- ssmile: '\u2323',
- sstarf: '\u22C6',
- Star: '\u22C6',
- star: '\u2606',
- starf: '\u2605',
- straightepsilon: '\u03F5',
- straightphi: '\u03D5',
- strns: '\u00AF',
- Sub: '\u22D0',
- sub: '\u2282',
- subdot: '\u2ABD',
- subE: '\u2AC5',
- sube: '\u2286',
- subedot: '\u2AC3',
- submult: '\u2AC1',
- subnE: '\u2ACB',
- subne: '\u228A',
- subplus: '\u2ABF',
- subrarr: '\u2979',
- Subset: '\u22D0',
- subset: '\u2282',
- subseteq: '\u2286',
- subseteqq: '\u2AC5',
- SubsetEqual: '\u2286',
- subsetneq: '\u228A',
- subsetneqq: '\u2ACB',
- subsim: '\u2AC7',
- subsub: '\u2AD5',
- subsup: '\u2AD3',
- succ: '\u227B',
- succapprox: '\u2AB8',
- succcurlyeq: '\u227D',
- Succeeds: '\u227B',
- SucceedsEqual: '\u2AB0',
- SucceedsSlantEqual: '\u227D',
- SucceedsTilde: '\u227F',
- succeq: '\u2AB0',
- succnapprox: '\u2ABA',
- succneqq: '\u2AB6',
- succnsim: '\u22E9',
- succsim: '\u227F',
- SuchThat: '\u220B',
- Sum: '\u2211',
- sum: '\u2211',
- sung: '\u266A',
- Sup: '\u22D1',
- sup: '\u2283',
- sup1: '\u00B9',
- sup2: '\u00B2',
- sup3: '\u00B3',
- supdot: '\u2ABE',
- supdsub: '\u2AD8',
- supE: '\u2AC6',
- supe: '\u2287',
- supedot: '\u2AC4',
- Superset: '\u2283',
- SupersetEqual: '\u2287',
- suphsol: '\u27C9',
- suphsub: '\u2AD7',
- suplarr: '\u297B',
- supmult: '\u2AC2',
- supnE: '\u2ACC',
- supne: '\u228B',
- supplus: '\u2AC0',
- Supset: '\u22D1',
- supset: '\u2283',
- supseteq: '\u2287',
- supseteqq: '\u2AC6',
- supsetneq: '\u228B',
- supsetneqq: '\u2ACC',
- supsim: '\u2AC8',
- supsub: '\u2AD4',
- supsup: '\u2AD6',
- swarhk: '\u2926',
- swArr: '\u21D9',
- swarr: '\u2199',
- swarrow: '\u2199',
- swnwar: '\u292A',
- szlig: '\u00DF',
- Tab: '\u0009',
- target: '\u2316',
- Tau: '\u03A4',
- tau: '\u03C4',
- tbrk: '\u23B4',
- Tcaron: '\u0164',
- tcaron: '\u0165',
- Tcedil: '\u0162',
- tcedil: '\u0163',
- Tcy: '\u0422',
- tcy: '\u0442',
- tdot: '\u20DB',
- telrec: '\u2315',
- Tfr: '\uD835\uDD17',
- tfr: '\uD835\uDD31',
- there4: '\u2234',
- Therefore: '\u2234',
- therefore: '\u2234',
- Theta: '\u0398',
- theta: '\u03B8',
- thetasym: '\u03D1',
- thetav: '\u03D1',
- thickapprox: '\u2248',
- thicksim: '\u223C',
- ThickSpace: '\u205F\u200A',
- thinsp: '\u2009',
- ThinSpace: '\u2009',
- thkap: '\u2248',
- thksim: '\u223C',
- THORN: '\u00DE',
- thorn: '\u00FE',
- Tilde: '\u223C',
- tilde: '\u02DC',
- TildeEqual: '\u2243',
- TildeFullEqual: '\u2245',
- TildeTilde: '\u2248',
- times: '\u00D7',
- timesb: '\u22A0',
- timesbar: '\u2A31',
- timesd: '\u2A30',
- tint: '\u222D',
- toea: '\u2928',
- top: '\u22A4',
- topbot: '\u2336',
- topcir: '\u2AF1',
- Topf: '\uD835\uDD4B',
- topf: '\uD835\uDD65',
- topfork: '\u2ADA',
- tosa: '\u2929',
- tprime: '\u2034',
- TRADE: '\u2122',
- trade: '\u2122',
- triangle: '\u25B5',
- triangledown: '\u25BF',
- triangleleft: '\u25C3',
- trianglelefteq: '\u22B4',
- triangleq: '\u225C',
- triangleright: '\u25B9',
- trianglerighteq: '\u22B5',
- tridot: '\u25EC',
- trie: '\u225C',
- triminus: '\u2A3A',
- TripleDot: '\u20DB',
- triplus: '\u2A39',
- trisb: '\u29CD',
- tritime: '\u2A3B',
- trpezium: '\u23E2',
- Tscr: '\uD835\uDCAF',
- tscr: '\uD835\uDCC9',
- TScy: '\u0426',
- tscy: '\u0446',
- TSHcy: '\u040B',
- tshcy: '\u045B',
- Tstrok: '\u0166',
- tstrok: '\u0167',
- twixt: '\u226C',
- twoheadleftarrow: '\u219E',
- twoheadrightarrow: '\u21A0',
- Uacute: '\u00DA',
- uacute: '\u00FA',
- Uarr: '\u219F',
- uArr: '\u21D1',
- uarr: '\u2191',
- Uarrocir: '\u2949',
- Ubrcy: '\u040E',
- ubrcy: '\u045E',
- Ubreve: '\u016C',
- ubreve: '\u016D',
- Ucirc: '\u00DB',
- ucirc: '\u00FB',
- Ucy: '\u0423',
- ucy: '\u0443',
- udarr: '\u21C5',
- Udblac: '\u0170',
- udblac: '\u0171',
- udhar: '\u296E',
- ufisht: '\u297E',
- Ufr: '\uD835\uDD18',
- ufr: '\uD835\uDD32',
- Ugrave: '\u00D9',
- ugrave: '\u00F9',
- uHar: '\u2963',
- uharl: '\u21BF',
- uharr: '\u21BE',
- uhblk: '\u2580',
- ulcorn: '\u231C',
- ulcorner: '\u231C',
- ulcrop: '\u230F',
- ultri: '\u25F8',
- Umacr: '\u016A',
- umacr: '\u016B',
- uml: '\u00A8',
- UnderBar: '\u005F',
- UnderBrace: '\u23DF',
- UnderBracket: '\u23B5',
- UnderParenthesis: '\u23DD',
- Union: '\u22C3',
- UnionPlus: '\u228E',
- Uogon: '\u0172',
- uogon: '\u0173',
- Uopf: '\uD835\uDD4C',
- uopf: '\uD835\uDD66',
- UpArrow: '\u2191',
- Uparrow: '\u21D1',
- uparrow: '\u2191',
- UpArrowBar: '\u2912',
- UpArrowDownArrow: '\u21C5',
- UpDownArrow: '\u2195',
- Updownarrow: '\u21D5',
- updownarrow: '\u2195',
- UpEquilibrium: '\u296E',
- upharpoonleft: '\u21BF',
- upharpoonright: '\u21BE',
- uplus: '\u228E',
- UpperLeftArrow: '\u2196',
- UpperRightArrow: '\u2197',
- Upsi: '\u03D2',
- upsi: '\u03C5',
- upsih: '\u03D2',
- Upsilon: '\u03A5',
- upsilon: '\u03C5',
- UpTee: '\u22A5',
- UpTeeArrow: '\u21A5',
- upuparrows: '\u21C8',
- urcorn: '\u231D',
- urcorner: '\u231D',
- urcrop: '\u230E',
- Uring: '\u016E',
- uring: '\u016F',
- urtri: '\u25F9',
- Uscr: '\uD835\uDCB0',
- uscr: '\uD835\uDCCA',
- utdot: '\u22F0',
- Utilde: '\u0168',
- utilde: '\u0169',
- utri: '\u25B5',
- utrif: '\u25B4',
- uuarr: '\u21C8',
- Uuml: '\u00DC',
- uuml: '\u00FC',
- uwangle: '\u29A7',
- vangrt: '\u299C',
- varepsilon: '\u03F5',
- varkappa: '\u03F0',
- varnothing: '\u2205',
- varphi: '\u03D5',
- varpi: '\u03D6',
- varpropto: '\u221D',
- vArr: '\u21D5',
- varr: '\u2195',
- varrho: '\u03F1',
- varsigma: '\u03C2',
- varsubsetneq: '\u228A\uFE00',
- varsubsetneqq: '\u2ACB\uFE00',
- varsupsetneq: '\u228B\uFE00',
- varsupsetneqq: '\u2ACC\uFE00',
- vartheta: '\u03D1',
- vartriangleleft: '\u22B2',
- vartriangleright: '\u22B3',
- Vbar: '\u2AEB',
- vBar: '\u2AE8',
- vBarv: '\u2AE9',
- Vcy: '\u0412',
- vcy: '\u0432',
- VDash: '\u22AB',
- Vdash: '\u22A9',
- vDash: '\u22A8',
- vdash: '\u22A2',
- Vdashl: '\u2AE6',
- Vee: '\u22C1',
- vee: '\u2228',
- veebar: '\u22BB',
- veeeq: '\u225A',
- vellip: '\u22EE',
- Verbar: '\u2016',
- verbar: '\u007C',
- Vert: '\u2016',
- vert: '\u007C',
- VerticalBar: '\u2223',
- VerticalLine: '\u007C',
- VerticalSeparator: '\u2758',
- VerticalTilde: '\u2240',
- VeryThinSpace: '\u200A',
- Vfr: '\uD835\uDD19',
- vfr: '\uD835\uDD33',
- vltri: '\u22B2',
- vnsub: '\u2282\u20D2',
- vnsup: '\u2283\u20D2',
- Vopf: '\uD835\uDD4D',
- vopf: '\uD835\uDD67',
- vprop: '\u221D',
- vrtri: '\u22B3',
- Vscr: '\uD835\uDCB1',
- vscr: '\uD835\uDCCB',
- vsubnE: '\u2ACB\uFE00',
- vsubne: '\u228A\uFE00',
- vsupnE: '\u2ACC\uFE00',
- vsupne: '\u228B\uFE00',
- Vvdash: '\u22AA',
- vzigzag: '\u299A',
- Wcirc: '\u0174',
- wcirc: '\u0175',
- wedbar: '\u2A5F',
- Wedge: '\u22C0',
- wedge: '\u2227',
- wedgeq: '\u2259',
- weierp: '\u2118',
- Wfr: '\uD835\uDD1A',
- wfr: '\uD835\uDD34',
- Wopf: '\uD835\uDD4E',
- wopf: '\uD835\uDD68',
- wp: '\u2118',
- wr: '\u2240',
- wreath: '\u2240',
- Wscr: '\uD835\uDCB2',
- wscr: '\uD835\uDCCC',
- xcap: '\u22C2',
- xcirc: '\u25EF',
- xcup: '\u22C3',
- xdtri: '\u25BD',
- Xfr: '\uD835\uDD1B',
- xfr: '\uD835\uDD35',
- xhArr: '\u27FA',
- xharr: '\u27F7',
- Xi: '\u039E',
- xi: '\u03BE',
- xlArr: '\u27F8',
- xlarr: '\u27F5',
- xmap: '\u27FC',
- xnis: '\u22FB',
- xodot: '\u2A00',
- Xopf: '\uD835\uDD4F',
- xopf: '\uD835\uDD69',
- xoplus: '\u2A01',
- xotime: '\u2A02',
- xrArr: '\u27F9',
- xrarr: '\u27F6',
- Xscr: '\uD835\uDCB3',
- xscr: '\uD835\uDCCD',
- xsqcup: '\u2A06',
- xuplus: '\u2A04',
- xutri: '\u25B3',
- xvee: '\u22C1',
- xwedge: '\u22C0',
- Yacute: '\u00DD',
- yacute: '\u00FD',
- YAcy: '\u042F',
- yacy: '\u044F',
- Ycirc: '\u0176',
- ycirc: '\u0177',
- Ycy: '\u042B',
- ycy: '\u044B',
- yen: '\u00A5',
- Yfr: '\uD835\uDD1C',
- yfr: '\uD835\uDD36',
- YIcy: '\u0407',
- yicy: '\u0457',
- Yopf: '\uD835\uDD50',
- yopf: '\uD835\uDD6A',
- Yscr: '\uD835\uDCB4',
- yscr: '\uD835\uDCCE',
- YUcy: '\u042E',
- yucy: '\u044E',
- Yuml: '\u0178',
- yuml: '\u00FF',
- Zacute: '\u0179',
- zacute: '\u017A',
- Zcaron: '\u017D',
- zcaron: '\u017E',
- Zcy: '\u0417',
- zcy: '\u0437',
- Zdot: '\u017B',
- zdot: '\u017C',
- zeetrf: '\u2128',
- ZeroWidthSpace: '\u200B',
- Zeta: '\u0396',
- zeta: '\u03B6',
- Zfr: '\u2128',
- zfr: '\uD835\uDD37',
- ZHcy: '\u0416',
- zhcy: '\u0436',
- zigrarr: '\u21DD',
- Zopf: '\u2124',
- zopf: '\uD835\uDD6B',
- Zscr: '\uD835\uDCB5',
- zscr: '\uD835\uDCCF',
- zwj: '\u200D',
- zwnj: '\u200C'
- });
-
- /**
- * @deprecated use `HTML_ENTITIES` instead
- * @see HTML_ENTITIES
- */
- exports.entityMap = exports.HTML_ENTITIES;
- });
- entities.XML_ENTITIES;
- entities.HTML_ENTITIES;
- entities.entityMap;
-
- var NAMESPACE$1 = conventions.NAMESPACE;
-
- //[4] NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
- //[4a] NameChar ::= NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
- //[5] Name ::= NameStartChar (NameChar)*
- var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/; //\u10000-\uEFFFF
- var nameChar = new RegExp("[\\-\\.0-9" + nameStartChar.source.slice(1, -1) + "\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
- var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\:' + nameStartChar.source + nameChar.source + '*)?$');
- //var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
- //var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
-
- //S_TAG, S_ATTR, S_EQ, S_ATTR_NOQUOT_VALUE
- //S_ATTR_SPACE, S_ATTR_END, S_TAG_SPACE, S_TAG_CLOSE
- var S_TAG = 0; //tag name offerring
- var S_ATTR = 1; //attr name offerring
- var S_ATTR_SPACE = 2; //attr name end and space offer
- var S_EQ = 3; //=space?
- var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)
- var S_ATTR_END = 5; //attr value end and no space(quot end)
- var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)
- var S_TAG_CLOSE = 7; //closed el<el />
-
- /**
- * Creates an error that will not be caught by XMLReader aka the SAX parser.
- *
- * @param {string} message
- * @param {any?} locator Optional, can provide details about the location in the source
- * @constructor
- */
- function ParseError$1(message, locator) {
- this.message = message;
- this.locator = locator;
- if (Error.captureStackTrace) Error.captureStackTrace(this, ParseError$1);
- }
- ParseError$1.prototype = new Error();
- ParseError$1.prototype.name = ParseError$1.name;
- function XMLReader$1() {}
- XMLReader$1.prototype = {
- parse: function (source, defaultNSMap, entityMap) {
- var domBuilder = this.domBuilder;
- domBuilder.startDocument();
- _copy(defaultNSMap, defaultNSMap = {});
- parse$1(source, defaultNSMap, entityMap, domBuilder, this.errorHandler);
- domBuilder.endDocument();
- }
- };
- function parse$1(source, defaultNSMapCopy, entityMap, domBuilder, errorHandler) {
- function fixedFromCharCode(code) {
- // String.prototype.fromCharCode does not supports
- // > 2 bytes unicode chars directly
- if (code > 0xffff) {
- code -= 0x10000;
- var surrogate1 = 0xd800 + (code >> 10),
- surrogate2 = 0xdc00 + (code & 0x3ff);
- return String.fromCharCode(surrogate1, surrogate2);
- } else {
- return String.fromCharCode(code);
- }
- }
- function entityReplacer(a) {
- var k = a.slice(1, -1);
- if (Object.hasOwnProperty.call(entityMap, k)) {
- return entityMap[k];
- } else if (k.charAt(0) === '#') {
- return fixedFromCharCode(parseInt(k.substr(1).replace('x', '0x')));
- } else {
- errorHandler.error('entity not found:' + a);
- return a;
- }
- }
- function appendText(end) {
- //has some bugs
- if (end > start) {
- var xt = source.substring(start, end).replace(/&#?\w+;/g, entityReplacer);
- locator && position(start);
- domBuilder.characters(xt, 0, end - start);
- start = end;
- }
- }
- function position(p, m) {
- while (p >= lineEnd && (m = linePattern.exec(source))) {
- lineStart = m.index;
- lineEnd = lineStart + m[0].length;
- locator.lineNumber++;
- //console.log('line++:',locator,startPos,endPos)
- }
-
- locator.columnNumber = p - lineStart + 1;
- }
- var lineStart = 0;
- var lineEnd = 0;
- var linePattern = /.*(?:\r\n?|\n)|.*$/g;
- var locator = domBuilder.locator;
- var parseStack = [{
- currentNSMap: defaultNSMapCopy
- }];
- var closeMap = {};
- var start = 0;
- while (true) {
- try {
- var tagStart = source.indexOf('<', start);
- if (tagStart < 0) {
- if (!source.substr(start).match(/^\s*$/)) {
- var doc = domBuilder.doc;
- var text = doc.createTextNode(source.substr(start));
- doc.appendChild(text);
- domBuilder.currentElement = text;
- }
- return;
- }
- if (tagStart > start) {
- appendText(tagStart);
- }
- switch (source.charAt(tagStart + 1)) {
- case '/':
- var end = source.indexOf('>', tagStart + 3);
- var tagName = source.substring(tagStart + 2, end).replace(/[ \t\n\r]+$/g, '');
- var config = parseStack.pop();
- if (end < 0) {
- tagName = source.substring(tagStart + 2).replace(/[\s<].*/, '');
- errorHandler.error("end tag name: " + tagName + ' is not complete:' + config.tagName);
- end = tagStart + 1 + tagName.length;
- } else if (tagName.match(/\s</)) {
- tagName = tagName.replace(/[\s<].*/, '');
- errorHandler.error("end tag name: " + tagName + ' maybe not complete');
- end = tagStart + 1 + tagName.length;
- }
- var localNSMap = config.localNSMap;
- var endMatch = config.tagName == tagName;
- var endIgnoreCaseMach = endMatch || config.tagName && config.tagName.toLowerCase() == tagName.toLowerCase();
- if (endIgnoreCaseMach) {
- domBuilder.endElement(config.uri, config.localName, tagName);
- if (localNSMap) {
- for (var prefix in localNSMap) {
- if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
- domBuilder.endPrefixMapping(prefix);
- }
- }
- }
- if (!endMatch) {
- errorHandler.fatalError("end tag name: " + tagName + ' is not match the current start tagName:' + config.tagName); // No known test case
- }
- } else {
- parseStack.push(config);
- }
- end++;
- break;
- // end elment
- case '?':
- // <?...?>
- locator && position(tagStart);
- end = parseInstruction(source, tagStart, domBuilder);
- break;
- case '!':
- // <!doctype,<![CDATA,<!--
- locator && position(tagStart);
- end = parseDCC(source, tagStart, domBuilder, errorHandler);
- break;
- default:
- locator && position(tagStart);
- var el = new ElementAttributes();
- var currentNSMap = parseStack[parseStack.length - 1].currentNSMap;
- //elStartEnd
- var end = parseElementStartPart(source, tagStart, el, currentNSMap, entityReplacer, errorHandler);
- var len = el.length;
- if (!el.closed && fixSelfClosed(source, end, el.tagName, closeMap)) {
- el.closed = true;
- if (!entityMap.nbsp) {
- errorHandler.warning('unclosed xml attribute');
- }
- }
- if (locator && len) {
- var locator2 = copyLocator(locator, {});
- //try{//attribute position fixed
- for (var i = 0; i < len; i++) {
- var a = el[i];
- position(a.offset);
- a.locator = copyLocator(locator, {});
- }
- domBuilder.locator = locator2;
- if (appendElement$1(el, domBuilder, currentNSMap)) {
- parseStack.push(el);
- }
- domBuilder.locator = locator;
- } else {
- if (appendElement$1(el, domBuilder, currentNSMap)) {
- parseStack.push(el);
- }
- }
- if (NAMESPACE$1.isHTML(el.uri) && !el.closed) {
- end = parseHtmlSpecialContent(source, end, el.tagName, entityReplacer, domBuilder);
- } else {
- end++;
- }
- }
- } catch (e) {
- if (e instanceof ParseError$1) {
- throw e;
- }
- errorHandler.error('element parse error: ' + e);
- end = -1;
- }
- if (end > start) {
- start = end;
- } else {
- //TODO: 这里有可能sax回退，有位置错误风险
- appendText(Math.max(tagStart, start) + 1);
- }
- }
- }
- function copyLocator(f, t) {
- t.lineNumber = f.lineNumber;
- t.columnNumber = f.columnNumber;
- return t;
- }
-
- /**
- * @see #appendElement(source,elStartEnd,el,selfClosed,entityReplacer,domBuilder,parseStack);
- * @return end of the elementStartPart(end of elementEndPart for selfClosed el)
- */
- function parseElementStartPart(source, start, el, currentNSMap, entityReplacer, errorHandler) {
- /**
- * @param {string} qname
- * @param {string} value
- * @param {number} startIndex
- */
- function addAttribute(qname, value, startIndex) {
- if (el.attributeNames.hasOwnProperty(qname)) {
- errorHandler.fatalError('Attribute ' + qname + ' redefined');
- }
- el.addValue(qname,
- // @see https://www.w3.org/TR/xml/#AVNormalize
- // since the xmldom sax parser does not "interpret" DTD the following is not implemented:
- // - recursive replacement of (DTD) entity references
- // - trimming and collapsing multiple spaces into a single one for attributes that are not of type CDATA
- value.replace(/[\t\n\r]/g, ' ').replace(/&#?\w+;/g, entityReplacer), startIndex);
- }
- var attrName;
- var value;
- var p = ++start;
- var s = S_TAG; //status
- while (true) {
- var c = source.charAt(p);
- switch (c) {
- case '=':
- if (s === S_ATTR) {
- //attrName
- attrName = source.slice(start, p);
- s = S_EQ;
- } else if (s === S_ATTR_SPACE) {
- s = S_EQ;
- } else {
- //fatalError: equal must after attrName or space after attrName
- throw new Error('attribute equal must after attrName'); // No known test case
- }
-
- break;
- case '\'':
- case '"':
- if (s === S_EQ || s === S_ATTR //|| s == S_ATTR_SPACE
- ) {
- //equal
- if (s === S_ATTR) {
- errorHandler.warning('attribute value must after "="');
- attrName = source.slice(start, p);
- }
- start = p + 1;
- p = source.indexOf(c, start);
- if (p > 0) {
- value = source.slice(start, p);
- addAttribute(attrName, value, start - 1);
- s = S_ATTR_END;
- } else {
- //fatalError: no end quot match
- throw new Error('attribute value no end \'' + c + '\' match');
- }
- } else if (s == S_ATTR_NOQUOT_VALUE) {
- value = source.slice(start, p);
- addAttribute(attrName, value, start);
- errorHandler.warning('attribute "' + attrName + '" missed start quot(' + c + ')!!');
- start = p + 1;
- s = S_ATTR_END;
- } else {
- //fatalError: no equal before
- throw new Error('attribute value must after "="'); // No known test case
- }
-
- break;
- case '/':
- switch (s) {
- case S_TAG:
- el.setTagName(source.slice(start, p));
- case S_ATTR_END:
- case S_TAG_SPACE:
- case S_TAG_CLOSE:
- s = S_TAG_CLOSE;
- el.closed = true;
- case S_ATTR_NOQUOT_VALUE:
- case S_ATTR:
- break;
- case S_ATTR_SPACE:
- el.closed = true;
- break;
- //case S_EQ:
- default:
- throw new Error("attribute invalid close char('/')");
- // No known test case
- }
-
- break;
- case '':
- //end document
- errorHandler.error('unexpected end of input');
- if (s == S_TAG) {
- el.setTagName(source.slice(start, p));
- }
- return p;
- case '>':
- switch (s) {
- case S_TAG:
- el.setTagName(source.slice(start, p));
- case S_ATTR_END:
- case S_TAG_SPACE:
- case S_TAG_CLOSE:
- break;
- //normal
- case S_ATTR_NOQUOT_VALUE: //Compatible state
- case S_ATTR:
- value = source.slice(start, p);
- if (value.slice(-1) === '/') {
- el.closed = true;
- value = value.slice(0, -1);
- }
- case S_ATTR_SPACE:
- if (s === S_ATTR_SPACE) {
- value = attrName;
- }
- if (s == S_ATTR_NOQUOT_VALUE) {
- errorHandler.warning('attribute "' + value + '" missed quot(")!');
- addAttribute(attrName, value, start);
- } else {
- if (!NAMESPACE$1.isHTML(currentNSMap['']) || !value.match(/^(?:disabled|checked|selected)$/i)) {
- errorHandler.warning('attribute "' + value + '" missed value!! "' + value + '" instead!!');
- }
- addAttribute(value, value, start);
- }
- break;
- case S_EQ:
- throw new Error('attribute value missed!!');
- }
- // console.log(tagName,tagNamePattern,tagNamePattern.test(tagName))
- return p;
- /*xml space '\x20' | #x9 | #xD | #xA; */
- case '\u0080':
- c = ' ';
- default:
- if (c <= ' ') {
- //space
- switch (s) {
- case S_TAG:
- el.setTagName(source.slice(start, p)); //tagName
- s = S_TAG_SPACE;
- break;
- case S_ATTR:
- attrName = source.slice(start, p);
- s = S_ATTR_SPACE;
- break;
- case S_ATTR_NOQUOT_VALUE:
- var value = source.slice(start, p);
- errorHandler.warning('attribute "' + value + '" missed quot(")!!');
- addAttribute(attrName, value, start);
- case S_ATTR_END:
- s = S_TAG_SPACE;
- break;
- //case S_TAG_SPACE:
- //case S_EQ:
- //case S_ATTR_SPACE:
- // void();break;
- //case S_TAG_CLOSE:
- //ignore warning
- }
- } else {
- //not space
- //S_TAG, S_ATTR, S_EQ, S_ATTR_NOQUOT_VALUE
- //S_ATTR_SPACE, S_ATTR_END, S_TAG_SPACE, S_TAG_CLOSE
- switch (s) {
- //case S_TAG:void();break;
- //case S_ATTR:void();break;
- //case S_ATTR_NOQUOT_VALUE:void();break;
- case S_ATTR_SPACE:
- el.tagName;
- if (!NAMESPACE$1.isHTML(currentNSMap['']) || !attrName.match(/^(?:disabled|checked|selected)$/i)) {
- errorHandler.warning('attribute "' + attrName + '" missed value!! "' + attrName + '" instead2!!');
- }
- addAttribute(attrName, attrName, start);
- start = p;
- s = S_ATTR;
- break;
- case S_ATTR_END:
- errorHandler.warning('attribute space is required"' + attrName + '"!!');
- case S_TAG_SPACE:
- s = S_ATTR;
- start = p;
- break;
- case S_EQ:
- s = S_ATTR_NOQUOT_VALUE;
- start = p;
- break;
- case S_TAG_CLOSE:
- throw new Error("elements closed character '/' and '>' must be connected to");
- }
- }
- } //end outer switch
- //console.log('p++',p)
- p++;
- }
- }
- /**
- * @return true if has new namespace define
- */
- function appendElement$1(el, domBuilder, currentNSMap) {
- var tagName = el.tagName;
- var localNSMap = null;
- //var currentNSMap = parseStack[parseStack.length-1].currentNSMap;
- var i = el.length;
- while (i--) {
- var a = el[i];
- var qName = a.qName;
- var value = a.value;
- var nsp = qName.indexOf(':');
- if (nsp > 0) {
- var prefix = a.prefix = qName.slice(0, nsp);
- var localName = qName.slice(nsp + 1);
- var nsPrefix = prefix === 'xmlns' && localName;
- } else {
- localName = qName;
- prefix = null;
- nsPrefix = qName === 'xmlns' && '';
- }
- //can not set prefix,because prefix !== ''
- a.localName = localName;
- //prefix == null for no ns prefix attribute
- if (nsPrefix !== false) {
- //hack!!
- if (localNSMap == null) {
- localNSMap = {};
- //console.log(currentNSMap,0)
- _copy(currentNSMap, currentNSMap = {});
- //console.log(currentNSMap,1)
- }
-
- currentNSMap[nsPrefix] = localNSMap[nsPrefix] = value;
- a.uri = NAMESPACE$1.XMLNS;
- domBuilder.startPrefixMapping(nsPrefix, value);
- }
- }
- var i = el.length;
- while (i--) {
- a = el[i];
- var prefix = a.prefix;
- if (prefix) {
- //no prefix attribute has no namespace
- if (prefix === 'xml') {
- a.uri = NAMESPACE$1.XML;
- }
- if (prefix !== 'xmlns') {
- a.uri = currentNSMap[prefix || ''];
-
- //{console.log('###'+a.qName,domBuilder.locator.systemId+'',currentNSMap,a.uri)}
- }
- }
- }
-
- var nsp = tagName.indexOf(':');
- if (nsp > 0) {
- prefix = el.prefix = tagName.slice(0, nsp);
- localName = el.localName = tagName.slice(nsp + 1);
- } else {
- prefix = null; //important!!
- localName = el.localName = tagName;
- }
- //no prefix element has default namespace
- var ns = el.uri = currentNSMap[prefix || ''];
- domBuilder.startElement(ns, localName, tagName, el);
- //endPrefixMapping and startPrefixMapping have not any help for dom builder
- //localNSMap = null
- if (el.closed) {
- domBuilder.endElement(ns, localName, tagName);
- if (localNSMap) {
- for (prefix in localNSMap) {
- if (Object.prototype.hasOwnProperty.call(localNSMap, prefix)) {
- domBuilder.endPrefixMapping(prefix);
- }
- }
- }
- } else {
- el.currentNSMap = currentNSMap;
- el.localNSMap = localNSMap;
- //parseStack.push(el);
- return true;
- }
- }
- function parseHtmlSpecialContent(source, elStartEnd, tagName, entityReplacer, domBuilder) {
- if (/^(?:script|textarea)$/i.test(tagName)) {
- var elEndStart = source.indexOf('</' + tagName + '>', elStartEnd);
- var text = source.substring(elStartEnd + 1, elEndStart);
- if (/[&<]/.test(text)) {
- if (/^script$/i.test(tagName)) {
- //if(!/\]\]>/.test(text)){
- //lexHandler.startCDATA();
- domBuilder.characters(text, 0, text.length);
- //lexHandler.endCDATA();
- return elEndStart;
- //}
- } //}else{//text area
- text = text.replace(/&#?\w+;/g, entityReplacer);
- domBuilder.characters(text, 0, text.length);
- return elEndStart;
- //}
- }
- }
-
- return elStartEnd + 1;
- }
- function fixSelfClosed(source, elStartEnd, tagName, closeMap) {
- //if(tagName in closeMap){
- var pos = closeMap[tagName];
- if (pos == null) {
- //console.log(tagName)
- pos = source.lastIndexOf('</' + tagName + '>');
- if (pos < elStartEnd) {
- //忘记闭合
- pos = source.lastIndexOf('</' + tagName);
- }
- closeMap[tagName] = pos;
- }
- return pos < elStartEnd;
- //}
- }
-
- function _copy(source, target) {
- for (var n in source) {
- if (Object.prototype.hasOwnProperty.call(source, n)) {
- target[n] = source[n];
- }
- }
- }
- function parseDCC(source, start, domBuilder, errorHandler) {
- //sure start with '<!'
- var next = source.charAt(start + 2);
- switch (next) {
- case '-':
- if (source.charAt(start + 3) === '-') {
- var end = source.indexOf('-->', start + 4);
- //append comment source.substring(4,end)//<!--
- if (end > start) {
- domBuilder.comment(source, start + 4, end - start - 4);
- return end + 3;
- } else {
- errorHandler.error("Unclosed comment");
- return -1;
- }
- } else {
- //error
- return -1;
- }
- default:
- if (source.substr(start + 3, 6) == 'CDATA[') {
- var end = source.indexOf(']]>', start + 9);
- domBuilder.startCDATA();
- domBuilder.characters(source, start + 9, end - start - 9);
- domBuilder.endCDATA();
- return end + 3;
- }
- //<!DOCTYPE
- //startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId)
- var matchs = split(source, start);
- var len = matchs.length;
- if (len > 1 && /!doctype/i.test(matchs[0][0])) {
- var name = matchs[1][0];
- var pubid = false;
- var sysid = false;
- if (len > 3) {
- if (/^public$/i.test(matchs[2][0])) {
- pubid = matchs[3][0];
- sysid = len > 4 && matchs[4][0];
- } else if (/^system$/i.test(matchs[2][0])) {
- sysid = matchs[3][0];
- }
- }
- var lastMatch = matchs[len - 1];
- domBuilder.startDTD(name, pubid, sysid);
- domBuilder.endDTD();
- return lastMatch.index + lastMatch[0].length;
- }
- }
- return -1;
- }
- function parseInstruction(source, start, domBuilder) {
- var end = source.indexOf('?>', start);
- if (end) {
- var match = source.substring(start, end).match(/^<\?(\S*)\s*([\s\S]*?)\s*$/);
- if (match) {
- match[0].length;
- domBuilder.processingInstruction(match[1], match[2]);
- return end + 2;
- } else {
- //error
- return -1;
- }
- }
- return -1;
- }
- function ElementAttributes() {
- this.attributeNames = {};
- }
- ElementAttributes.prototype = {
- setTagName: function (tagName) {
- if (!tagNamePattern.test(tagName)) {
- throw new Error('invalid tagName:' + tagName);
- }
- this.tagName = tagName;
- },
- addValue: function (qName, value, offset) {
- if (!tagNamePattern.test(qName)) {
- throw new Error('invalid attribute:' + qName);
- }
- this.attributeNames[qName] = this.length;
- this[this.length++] = {
- qName: qName,
- value: value,
- offset: offset
- };
- },
- length: 0,
- getLocalName: function (i) {
- return this[i].localName;
- },
- getLocator: function (i) {
- return this[i].locator;
- },
- getQName: function (i) {
- return this[i].qName;
- },
- getURI: function (i) {
- return this[i].uri;
- },
- getValue: function (i) {
- return this[i].value;
- }
- // ,getIndex:function(uri, localName)){
- // if(localName){
- //
- // }else{
- // var qName = uri
- // }
- // },
- // getValue:function(){return this.getValue(this.getIndex.apply(this,arguments))},
- // getType:function(uri,localName){}
- // getType:function(i){},
- };
-
- function split(source, start) {
- var match;
- var buf = [];
- var reg = /'[^']+'|"[^"]+"|[^\s<>\/=]+=?|(\/?\s*>|<)/g;
- reg.lastIndex = start;
- reg.exec(source); //skip <
- while (match = reg.exec(source)) {
- buf.push(match);
- if (match[1]) return buf;
- }
- }
- var XMLReader_1 = XMLReader$1;
- var ParseError_1 = ParseError$1;
- var sax = {
- XMLReader: XMLReader_1,
- ParseError: ParseError_1
- };
-
- var DOMImplementation = dom.DOMImplementation;
- var NAMESPACE = conventions.NAMESPACE;
- var ParseError = sax.ParseError;
- var XMLReader = sax.XMLReader;
-
- /**
- * Normalizes line ending according to https://www.w3.org/TR/xml11/#sec-line-ends:
- *
- * > XML parsed entities are often stored in computer files which,
- * > for editing convenience, are organized into lines.
- * > These lines are typically separated by some combination
- * > of the characters CARRIAGE RETURN (#xD) and LINE FEED (#xA).
- * >
- * > To simplify the tasks of applications, the XML processor must behave
- * > as if it normalized all line breaks in external parsed entities (including the document entity)
- * > on input, before parsing, by translating all of the following to a single #xA character:
- * >
- * > 1. the two-character sequence #xD #xA
- * > 2. the two-character sequence #xD #x85
- * > 3. the single character #x85
- * > 4. the single character #x2028
- * > 5. any #xD character that is not immediately followed by #xA or #x85.
- *
- * @param {string} input
- * @returns {string}
- */
- function normalizeLineEndings(input) {
- return input.replace(/\r[\n\u0085]/g, '\n').replace(/[\r\u0085\u2028]/g, '\n');
- }
-
- /**
- * @typedef Locator
- * @property {number} [columnNumber]
- * @property {number} [lineNumber]
- */
-
- /**
- * @typedef DOMParserOptions
- * @property {DOMHandler} [domBuilder]
- * @property {Function} [errorHandler]
- * @property {(string) => string} [normalizeLineEndings] used to replace line endings before parsing
- * defaults to `normalizeLineEndings`
- * @property {Locator} [locator]
- * @property {Record<string, string>} [xmlns]
- *
- * @see normalizeLineEndings
- */
-
- /**
- * The DOMParser interface provides the ability to parse XML or HTML source code
- * from a string into a DOM `Document`.
- *
- * _xmldom is different from the spec in that it allows an `options` parameter,
- * to override the default behavior._
- *
- * @param {DOMParserOptions} [options]
- * @constructor
- *
- * @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser
- * @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-parsing-and-serialization
- */
- function DOMParser$1(options) {
- this.options = options || {
- locator: {}
- };
- }
- DOMParser$1.prototype.parseFromString = function (source, mimeType) {
- var options = this.options;
- var sax = new XMLReader();
- var domBuilder = options.domBuilder || new DOMHandler(); //contentHandler and LexicalHandler
- var errorHandler = options.errorHandler;
- var locator = options.locator;
- var defaultNSMap = options.xmlns || {};
- var isHTML = /\/x?html?$/.test(mimeType); //mimeType.toLowerCase().indexOf('html') > -1;
- var entityMap = isHTML ? entities.HTML_ENTITIES : entities.XML_ENTITIES;
- if (locator) {
- domBuilder.setDocumentLocator(locator);
- }
- sax.errorHandler = buildErrorHandler(errorHandler, domBuilder, locator);
- sax.domBuilder = options.domBuilder || domBuilder;
- if (isHTML) {
- defaultNSMap[''] = NAMESPACE.HTML;
- }
- defaultNSMap.xml = defaultNSMap.xml || NAMESPACE.XML;
- var normalize = options.normalizeLineEndings || normalizeLineEndings;
- if (source && typeof source === 'string') {
- sax.parse(normalize(source), defaultNSMap, entityMap);
- } else {
- sax.errorHandler.error('invalid doc source');
- }
- return domBuilder.doc;
- };
- function buildErrorHandler(errorImpl, domBuilder, locator) {
- if (!errorImpl) {
- if (domBuilder instanceof DOMHandler) {
- return domBuilder;
- }
- errorImpl = domBuilder;
- }
- var errorHandler = {};
- var isCallback = errorImpl instanceof Function;
- locator = locator || {};
- function build(key) {
- var fn = errorImpl[key];
- if (!fn && isCallback) {
- fn = errorImpl.length == 2 ? function (msg) {
- errorImpl(key, msg);
- } : errorImpl;
- }
- errorHandler[key] = fn && function (msg) {
- fn('[xmldom ' + key + ']\t' + msg + _locator(locator));
- } || function () {};
- }
- build('warning');
- build('error');
- build('fatalError');
- return errorHandler;
- }
-
- //console.log('#\n\n\n\n\n\n\n####')
- /**
- * +ContentHandler+ErrorHandler
- * +LexicalHandler+EntityResolver2
- * -DeclHandler-DTDHandler
- *
- * DefaultHandler:EntityResolver, DTDHandler, ContentHandler, ErrorHandler
- * DefaultHandler2:DefaultHandler,LexicalHandler, DeclHandler, EntityResolver2
- * @link http://www.saxproject.org/apidoc/org/xml/sax/helpers/DefaultHandler.html
- */
- function DOMHandler() {
- this.cdata = false;
- }
- function position(locator, node) {
- node.lineNumber = locator.lineNumber;
- node.columnNumber = locator.columnNumber;
- }
- /**
- * @see org.xml.sax.ContentHandler#startDocument
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ContentHandler.html
- */
- DOMHandler.prototype = {
- startDocument: function () {
- this.doc = new DOMImplementation().createDocument(null, null, null);
- if (this.locator) {
- this.doc.documentURI = this.locator.systemId;
- }
- },
- startElement: function (namespaceURI, localName, qName, attrs) {
- var doc = this.doc;
- var el = doc.createElementNS(namespaceURI, qName || localName);
- var len = attrs.length;
- appendElement(this, el);
- this.currentElement = el;
- this.locator && position(this.locator, el);
- for (var i = 0; i < len; i++) {
- var namespaceURI = attrs.getURI(i);
- var value = attrs.getValue(i);
- var qName = attrs.getQName(i);
- var attr = doc.createAttributeNS(namespaceURI, qName);
- this.locator && position(attrs.getLocator(i), attr);
- attr.value = attr.nodeValue = value;
- el.setAttributeNode(attr);
- }
- },
- endElement: function (namespaceURI, localName, qName) {
- var current = this.currentElement;
- current.tagName;
- this.currentElement = current.parentNode;
- },
- startPrefixMapping: function (prefix, uri) {},
- endPrefixMapping: function (prefix) {},
- processingInstruction: function (target, data) {
- var ins = this.doc.createProcessingInstruction(target, data);
- this.locator && position(this.locator, ins);
- appendElement(this, ins);
- },
- ignorableWhitespace: function (ch, start, length) {},
- characters: function (chars, start, length) {
- chars = _toString.apply(this, arguments);
- //console.log(chars)
- if (chars) {
- if (this.cdata) {
- var charNode = this.doc.createCDATASection(chars);
- } else {
- var charNode = this.doc.createTextNode(chars);
- }
- if (this.currentElement) {
- this.currentElement.appendChild(charNode);
- } else if (/^\s*$/.test(chars)) {
- this.doc.appendChild(charNode);
- //process xml
- }
-
- this.locator && position(this.locator, charNode);
- }
- },
- skippedEntity: function (name) {},
- endDocument: function () {
- this.doc.normalize();
- },
- setDocumentLocator: function (locator) {
- if (this.locator = locator) {
- // && !('lineNumber' in locator)){
- locator.lineNumber = 0;
- }
- },
- //LexicalHandler
- comment: function (chars, start, length) {
- chars = _toString.apply(this, arguments);
- var comm = this.doc.createComment(chars);
- this.locator && position(this.locator, comm);
- appendElement(this, comm);
- },
- startCDATA: function () {
- //used in characters() methods
- this.cdata = true;
- },
- endCDATA: function () {
- this.cdata = false;
- },
- startDTD: function (name, publicId, systemId) {
- var impl = this.doc.implementation;
- if (impl && impl.createDocumentType) {
- var dt = impl.createDocumentType(name, publicId, systemId);
- this.locator && position(this.locator, dt);
- appendElement(this, dt);
- this.doc.doctype = dt;
- }
- },
- /**
- * @see org.xml.sax.ErrorHandler
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ErrorHandler.html
- */
- warning: function (error) {
- console.warn('[xmldom warning]\t' + error, _locator(this.locator));
- },
- error: function (error) {
- console.error('[xmldom error]\t' + error, _locator(this.locator));
- },
- fatalError: function (error) {
- throw new ParseError(error, this.locator);
- }
- };
- function _locator(l) {
- if (l) {
- return '\n@' + (l.systemId || '') + '#[line:' + l.lineNumber + ',col:' + l.columnNumber + ']';
- }
- }
- function _toString(chars, start, length) {
- if (typeof chars == 'string') {
- return chars.substr(start, length);
- } else {
- //java sax connect width xmldom on rhino(what about: "? && !(chars instanceof String)")
- if (chars.length >= start + length || start) {
- return new java.lang.String(chars, start, length) + '';
- }
- return chars;
- }
- }
-
- /*
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/LexicalHandler.html
- * used method of org.xml.sax.ext.LexicalHandler:
- * #comment(chars, start, length)
- * #startCDATA()
- * #endCDATA()
- * #startDTD(name, publicId, systemId)
- *
- *
- * IGNORED method of org.xml.sax.ext.LexicalHandler:
- * #endDTD()
- * #startEntity(name)
- * #endEntity(name)
- *
- *
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/DeclHandler.html
- * IGNORED method of org.xml.sax.ext.DeclHandler
- * #attributeDecl(eName, aName, type, mode, value)
- * #elementDecl(name, model)
- * #externalEntityDecl(name, publicId, systemId)
- * #internalEntityDecl(name, value)
- * @link http://www.saxproject.org/apidoc/org/xml/sax/ext/EntityResolver2.html
- * IGNORED method of org.xml.sax.EntityResolver2
- * #resolveEntity(String name,String publicId,String baseURI,String systemId)
- * #resolveEntity(publicId, systemId)
- * #getExternalSubset(name, baseURI)
- * @link http://www.saxproject.org/apidoc/org/xml/sax/DTDHandler.html
- * IGNORED method of org.xml.sax.DTDHandler
- * #notationDecl(name, publicId, systemId) {};
- * #unparsedEntityDecl(name, publicId, systemId, notationName) {};
- */
- "endDTD,startEntity,endEntity,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,resolveEntity,getExternalSubset,notationDecl,unparsedEntityDecl".replace(/\w+/g, function (key) {
- DOMHandler.prototype[key] = function () {
- return null;
- };
- });
-
- /* Private static helpers treated below as private instance methods, so don't need to add these to the public API; we might use a Relator to also get rid of non-standard public properties */
- function appendElement(hander, node) {
- if (!hander.currentElement) {
- hander.doc.appendChild(node);
- } else {
- hander.currentElement.appendChild(node);
- }
- } //appendChild and setAttributeNS are preformance key
-
- var __DOMHandler = DOMHandler;
- var normalizeLineEndings_1 = normalizeLineEndings;
- var DOMParser_1 = DOMParser$1;
- var domParser = {
- __DOMHandler: __DOMHandler,
- normalizeLineEndings: normalizeLineEndings_1,
- DOMParser: DOMParser_1
- };
-
- var DOMParser = domParser.DOMParser;
-
- /*! @name mpd-parser @version 1.3.0 @license Apache-2.0 */
- const isObject = obj => {
- return !!obj && typeof obj === 'object';
- };
- const merge$1 = (...objects) => {
- return objects.reduce((result, source) => {
- if (typeof source !== 'object') {
- return result;
- }
- Object.keys(source).forEach(key => {
- if (Array.isArray(result[key]) && Array.isArray(source[key])) {
- result[key] = result[key].concat(source[key]);
- } else if (isObject(result[key]) && isObject(source[key])) {
- result[key] = merge$1(result[key], source[key]);
- } else {
- result[key] = source[key];
- }
- });
- return result;
- }, {});
- };
- const values = o => Object.keys(o).map(k => o[k]);
- const range = (start, end) => {
- const result = [];
- for (let i = start; i < end; i++) {
- result.push(i);
- }
- return result;
- };
- const flatten = lists => lists.reduce((x, y) => x.concat(y), []);
- const from = list => {
- if (!list.length) {
- return [];
- }
- const result = [];
- for (let i = 0; i < list.length; i++) {
- result.push(list[i]);
- }
- return result;
- };
- const findIndexes = (l, key) => l.reduce((a, e, i) => {
- if (e[key]) {
- a.push(i);
- }
- return a;
- }, []);
- /**
- * Returns a union of the included lists provided each element can be identified by a key.
- *
- * @param {Array} list - list of lists to get the union of
- * @param {Function} keyFunction - the function to use as a key for each element
- *
- * @return {Array} the union of the arrays
- */
-
- const union = (lists, keyFunction) => {
- return values(lists.reduce((acc, list) => {
- list.forEach(el => {
- acc[keyFunction(el)] = el;
- });
- return acc;
- }, {}));
- };
- var errors = {
- INVALID_NUMBER_OF_PERIOD: 'INVALID_NUMBER_OF_PERIOD',
- INVALID_NUMBER_OF_CONTENT_STEERING: 'INVALID_NUMBER_OF_CONTENT_STEERING',
- DASH_EMPTY_MANIFEST: 'DASH_EMPTY_MANIFEST',
- DASH_INVALID_XML: 'DASH_INVALID_XML',
- NO_BASE_URL: 'NO_BASE_URL',
- MISSING_SEGMENT_INFORMATION: 'MISSING_SEGMENT_INFORMATION',
- SEGMENT_TIME_UNSPECIFIED: 'SEGMENT_TIME_UNSPECIFIED',
- UNSUPPORTED_UTC_TIMING_SCHEME: 'UNSUPPORTED_UTC_TIMING_SCHEME'
- };
-
- /**
- * @typedef {Object} SingleUri
- * @property {string} uri - relative location of segment
- * @property {string} resolvedUri - resolved location of segment
- * @property {Object} byterange - Object containing information on how to make byte range
- * requests following byte-range-spec per RFC2616.
- * @property {String} byterange.length - length of range request
- * @property {String} byterange.offset - byte offset of range request
- *
- * @see https://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.1
- */
-
- /**
- * Converts a URLType node (5.3.9.2.3 Table 13) to a segment object
- * that conforms to how m3u8-parser is structured
- *
- * @see https://github.com/videojs/m3u8-parser
- *
- * @param {string} baseUrl - baseUrl provided by <BaseUrl> nodes
- * @param {string} source - source url for segment
- * @param {string} range - optional range used for range calls,
- * follows RFC 2616, Clause 14.35.1
- * @return {SingleUri} full segment information transformed into a format similar
- * to m3u8-parser
- */
-
- const urlTypeToSegment = ({
- baseUrl = '',
- source = '',
- range = '',
- indexRange = ''
- }) => {
- const segment = {
- uri: source,
- resolvedUri: resolveUrl$1(baseUrl || '', source)
- };
- if (range || indexRange) {
- const rangeStr = range ? range : indexRange;
- const ranges = rangeStr.split('-'); // default to parsing this as a BigInt if possible
-
- let startRange = window.BigInt ? window.BigInt(ranges[0]) : parseInt(ranges[0], 10);
- let endRange = window.BigInt ? window.BigInt(ranges[1]) : parseInt(ranges[1], 10); // convert back to a number if less than MAX_SAFE_INTEGER
-
- if (startRange < Number.MAX_SAFE_INTEGER && typeof startRange === 'bigint') {
- startRange = Number(startRange);
- }
- if (endRange < Number.MAX_SAFE_INTEGER && typeof endRange === 'bigint') {
- endRange = Number(endRange);
- }
- let length;
- if (typeof endRange === 'bigint' || typeof startRange === 'bigint') {
- length = window.BigInt(endRange) - window.BigInt(startRange) + window.BigInt(1);
- } else {
- length = endRange - startRange + 1;
- }
- if (typeof length === 'bigint' && length < Number.MAX_SAFE_INTEGER) {
- length = Number(length);
- } // byterange should be inclusive according to
- // RFC 2616, Clause 14.35.1
-
- segment.byterange = {
- length,
- offset: startRange
- };
- }
- return segment;
- };
- const byteRangeToString = byterange => {
- // `endRange` is one less than `offset + length` because the HTTP range
- // header uses inclusive ranges
- let endRange;
- if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {
- endRange = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);
- } else {
- endRange = byterange.offset + byterange.length - 1;
- }
- return `${byterange.offset}-${endRange}`;
- };
-
- /**
- * parse the end number attribue that can be a string
- * number, or undefined.
- *
- * @param {string|number|undefined} endNumber
- * The end number attribute.
- *
- * @return {number|null}
- * The result of parsing the end number.
- */
-
- const parseEndNumber = endNumber => {
- if (endNumber && typeof endNumber !== 'number') {
- endNumber = parseInt(endNumber, 10);
- }
- if (isNaN(endNumber)) {
- return null;
- }
- return endNumber;
- };
- /**
- * Functions for calculating the range of available segments in static and dynamic
- * manifests.
- */
-
- const segmentRange = {
- /**
- * Returns the entire range of available segments for a static MPD
- *
- * @param {Object} attributes
- * Inheritied MPD attributes
- * @return {{ start: number, end: number }}
- * The start and end numbers for available segments
- */
- static(attributes) {
- const {
- duration,
- timescale = 1,
- sourceDuration,
- periodDuration
- } = attributes;
- const endNumber = parseEndNumber(attributes.endNumber);
- const segmentDuration = duration / timescale;
- if (typeof endNumber === 'number') {
- return {
- start: 0,
- end: endNumber
- };
- }
- if (typeof periodDuration === 'number') {
- return {
- start: 0,
- end: periodDuration / segmentDuration
- };
- }
- return {
- start: 0,
- end: sourceDuration / segmentDuration
- };
- },
- /**
- * Returns the current live window range of available segments for a dynamic MPD
- *
- * @param {Object} attributes
- * Inheritied MPD attributes
- * @return {{ start: number, end: number }}
- * The start and end numbers for available segments
- */
- dynamic(attributes) {
- const {
- NOW,
- clientOffset,
- availabilityStartTime,
- timescale = 1,
- duration,
- periodStart = 0,
- minimumUpdatePeriod = 0,
- timeShiftBufferDepth = Infinity
- } = attributes;
- const endNumber = parseEndNumber(attributes.endNumber); // clientOffset is passed in at the top level of mpd-parser and is an offset calculated
- // after retrieving UTC server time.
-
- const now = (NOW + clientOffset) / 1000; // WC stands for Wall Clock.
- // Convert the period start time to EPOCH.
-
- const periodStartWC = availabilityStartTime + periodStart; // Period end in EPOCH is manifest's retrieval time + time until next update.
-
- const periodEndWC = now + minimumUpdatePeriod;
- const periodDuration = periodEndWC - periodStartWC;
- const segmentCount = Math.ceil(periodDuration * timescale / duration);
- const availableStart = Math.floor((now - periodStartWC - timeShiftBufferDepth) * timescale / duration);
- const availableEnd = Math.floor((now - periodStartWC) * timescale / duration);
- return {
- start: Math.max(0, availableStart),
- end: typeof endNumber === 'number' ? endNumber : Math.min(segmentCount, availableEnd)
- };
- }
- };
- /**
- * Maps a range of numbers to objects with information needed to build the corresponding
- * segment list
- *
- * @name toSegmentsCallback
- * @function
- * @param {number} number
- * Number of the segment
- * @param {number} index
- * Index of the number in the range list
- * @return {{ number: Number, duration: Number, timeline: Number, time: Number }}
- * Object with segment timing and duration info
- */
-
- /**
- * Returns a callback for Array.prototype.map for mapping a range of numbers to
- * information needed to build the segment list.
- *
- * @param {Object} attributes
- * Inherited MPD attributes
- * @return {toSegmentsCallback}
- * Callback map function
- */
-
- const toSegments = attributes => number => {
- const {
- duration,
- timescale = 1,
- periodStart,
- startNumber = 1
- } = attributes;
- return {
- number: startNumber + number,
- duration: duration / timescale,
- timeline: periodStart,
- time: number * duration
- };
- };
- /**
- * Returns a list of objects containing segment timing and duration info used for
- * building the list of segments. This uses the @duration attribute specified
- * in the MPD manifest to derive the range of segments.
- *
- * @param {Object} attributes
- * Inherited MPD attributes
- * @return {{number: number, duration: number, time: number, timeline: number}[]}
- * List of Objects with segment timing and duration info
- */
-
- const parseByDuration = attributes => {
- const {
- type,
- duration,
- timescale = 1,
- periodDuration,
- sourceDuration
- } = attributes;
- const {
- start,
- end
- } = segmentRange[type](attributes);
- const segments = range(start, end).map(toSegments(attributes));
- if (type === 'static') {
- const index = segments.length - 1; // section is either a period or the full source
-
- const sectionDuration = typeof periodDuration === 'number' ? periodDuration : sourceDuration; // final segment may be less than full segment duration
-
- segments[index].duration = sectionDuration - duration / timescale * index;
- }
- return segments;
- };
-
- /**
- * Translates SegmentBase into a set of segments.
- * (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes. Each
- * node should be translated into segment.
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @return {Object.<Array>} list of segments
- */
-
- const segmentsFromBase = attributes => {
- const {
- baseUrl,
- initialization = {},
- sourceDuration,
- indexRange = '',
- periodStart,
- presentationTime,
- number = 0,
- duration
- } = attributes; // base url is required for SegmentBase to work, per spec (Section 5.3.9.2.1)
-
- if (!baseUrl) {
- throw new Error(errors.NO_BASE_URL);
- }
- const initSegment = urlTypeToSegment({
- baseUrl,
- source: initialization.sourceURL,
- range: initialization.range
- });
- const segment = urlTypeToSegment({
- baseUrl,
- source: baseUrl,
- indexRange
- });
- segment.map = initSegment; // If there is a duration, use it, otherwise use the given duration of the source
- // (since SegmentBase is only for one total segment)
-
- if (duration) {
- const segmentTimeInfo = parseByDuration(attributes);
- if (segmentTimeInfo.length) {
- segment.duration = segmentTimeInfo[0].duration;
- segment.timeline = segmentTimeInfo[0].timeline;
- }
- } else if (sourceDuration) {
- segment.duration = sourceDuration;
- segment.timeline = periodStart;
- } // If presentation time is provided, these segments are being generated by SIDX
- // references, and should use the time provided. For the general case of SegmentBase,
- // there should only be one segment in the period, so its presentation time is the same
- // as its period start.
-
- segment.presentationTime = presentationTime || periodStart;
- segment.number = number;
- return [segment];
- };
- /**
- * Given a playlist, a sidx box, and a baseUrl, update the segment list of the playlist
- * according to the sidx information given.
- *
- * playlist.sidx has metadadata about the sidx where-as the sidx param
- * is the parsed sidx box itself.
- *
- * @param {Object} playlist the playlist to update the sidx information for
- * @param {Object} sidx the parsed sidx box
- * @return {Object} the playlist object with the updated sidx information
- */
-
- const addSidxSegmentsToPlaylist$1 = (playlist, sidx, baseUrl) => {
- // Retain init segment information
- const initSegment = playlist.sidx.map ? playlist.sidx.map : null; // Retain source duration from initial main manifest parsing
-
- const sourceDuration = playlist.sidx.duration; // Retain source timeline
-
- const timeline = playlist.timeline || 0;
- const sidxByteRange = playlist.sidx.byterange;
- const sidxEnd = sidxByteRange.offset + sidxByteRange.length; // Retain timescale of the parsed sidx
-
- const timescale = sidx.timescale; // referenceType 1 refers to other sidx boxes
-
- const mediaReferences = sidx.references.filter(r => r.referenceType !== 1);
- const segments = [];
- const type = playlist.endList ? 'static' : 'dynamic';
- const periodStart = playlist.sidx.timeline;
- let presentationTime = periodStart;
- let number = playlist.mediaSequence || 0; // firstOffset is the offset from the end of the sidx box
-
- let startIndex; // eslint-disable-next-line
-
- if (typeof sidx.firstOffset === 'bigint') {
- startIndex = window.BigInt(sidxEnd) + sidx.firstOffset;
- } else {
- startIndex = sidxEnd + sidx.firstOffset;
- }
- for (let i = 0; i < mediaReferences.length; i++) {
- const reference = sidx.references[i]; // size of the referenced (sub)segment
-
- const size = reference.referencedSize; // duration of the referenced (sub)segment, in the timescale
- // this will be converted to seconds when generating segments
-
- const duration = reference.subsegmentDuration; // should be an inclusive range
-
- let endIndex; // eslint-disable-next-line
-
- if (typeof startIndex === 'bigint') {
- endIndex = startIndex + window.BigInt(size) - window.BigInt(1);
- } else {
- endIndex = startIndex + size - 1;
- }
- const indexRange = `${startIndex}-${endIndex}`;
- const attributes = {
- baseUrl,
- timescale,
- timeline,
- periodStart,
- presentationTime,
- number,
- duration,
- sourceDuration,
- indexRange,
- type
- };
- const segment = segmentsFromBase(attributes)[0];
- if (initSegment) {
- segment.map = initSegment;
- }
- segments.push(segment);
- if (typeof startIndex === 'bigint') {
- startIndex += window.BigInt(size);
- } else {
- startIndex += size;
- }
- presentationTime += duration / timescale;
- number++;
- }
- playlist.segments = segments;
- return playlist;
- };
- const SUPPORTED_MEDIA_TYPES = ['AUDIO', 'SUBTITLES']; // allow one 60fps frame as leniency (arbitrarily chosen)
-
- const TIME_FUDGE = 1 / 60;
- /**
- * Given a list of timelineStarts, combines, dedupes, and sorts them.
- *
- * @param {TimelineStart[]} timelineStarts - list of timeline starts
- *
- * @return {TimelineStart[]} the combined and deduped timeline starts
- */
-
- const getUniqueTimelineStarts = timelineStarts => {
- return union(timelineStarts, ({
- timeline
- }) => timeline).sort((a, b) => a.timeline > b.timeline ? 1 : -1);
- };
- /**
- * Finds the playlist with the matching NAME attribute.
- *
- * @param {Array} playlists - playlists to search through
- * @param {string} name - the NAME attribute to search for
- *
- * @return {Object|null} the matching playlist object, or null
- */
-
- const findPlaylistWithName = (playlists, name) => {
- for (let i = 0; i < playlists.length; i++) {
- if (playlists[i].attributes.NAME === name) {
- return playlists[i];
- }
- }
- return null;
- };
- /**
- * Gets a flattened array of media group playlists.
- *
- * @param {Object} manifest - the main manifest object
- *
- * @return {Array} the media group playlists
- */
-
- const getMediaGroupPlaylists = manifest => {
- let mediaGroupPlaylists = [];
- forEachMediaGroup$1(manifest, SUPPORTED_MEDIA_TYPES, (properties, type, group, label) => {
- mediaGroupPlaylists = mediaGroupPlaylists.concat(properties.playlists || []);
- });
- return mediaGroupPlaylists;
- };
- /**
- * Updates the playlist's media sequence numbers.
- *
- * @param {Object} config - options object
- * @param {Object} config.playlist - the playlist to update
- * @param {number} config.mediaSequence - the mediaSequence number to start with
- */
-
- const updateMediaSequenceForPlaylist = ({
- playlist,
- mediaSequence
- }) => {
- playlist.mediaSequence = mediaSequence;
- playlist.segments.forEach((segment, index) => {
- segment.number = playlist.mediaSequence + index;
- });
- };
- /**
- * Updates the media and discontinuity sequence numbers of newPlaylists given oldPlaylists
- * and a complete list of timeline starts.
- *
- * If no matching playlist is found, only the discontinuity sequence number of the playlist
- * will be updated.
- *
- * Since early available timelines are not supported, at least one segment must be present.
- *
- * @param {Object} config - options object
- * @param {Object[]} oldPlaylists - the old playlists to use as a reference
- * @param {Object[]} newPlaylists - the new playlists to update
- * @param {Object} timelineStarts - all timelineStarts seen in the stream to this point
- */
-
- const updateSequenceNumbers = ({
- oldPlaylists,
- newPlaylists,
- timelineStarts
- }) => {
- newPlaylists.forEach(playlist => {
- playlist.discontinuitySequence = timelineStarts.findIndex(function ({
- timeline
- }) {
- return timeline === playlist.timeline;
- }); // Playlists NAMEs come from DASH Representation IDs, which are mandatory
- // (see ISO_23009-1-2012 5.3.5.2).
- //
- // If the same Representation existed in a prior Period, it will retain the same NAME.
-
- const oldPlaylist = findPlaylistWithName(oldPlaylists, playlist.attributes.NAME);
- if (!oldPlaylist) {
- // Since this is a new playlist, the media sequence values can start from 0 without
- // consequence.
- return;
- } // TODO better support for live SIDX
- //
- // As of this writing, mpd-parser does not support multiperiod SIDX (in live or VOD).
- // This is evident by a playlist only having a single SIDX reference. In a multiperiod
- // playlist there would need to be multiple SIDX references. In addition, live SIDX is
- // not supported when the SIDX properties change on refreshes.
- //
- // In the future, if support needs to be added, the merging logic here can be called
- // after SIDX references are resolved. For now, exit early to prevent exceptions being
- // thrown due to undefined references.
-
- if (playlist.sidx) {
- return;
- } // Since we don't yet support early available timelines, we don't need to support
- // playlists with no segments.
-
- const firstNewSegment = playlist.segments[0];
- const oldMatchingSegmentIndex = oldPlaylist.segments.findIndex(function (oldSegment) {
- return Math.abs(oldSegment.presentationTime - firstNewSegment.presentationTime) < TIME_FUDGE;
- }); // No matching segment from the old playlist means the entire playlist was refreshed.
- // In this case the media sequence should account for this update, and the new segments
- // should be marked as discontinuous from the prior content, since the last prior
- // timeline was removed.
-
- if (oldMatchingSegmentIndex === -1) {
- updateMediaSequenceForPlaylist({
- playlist,
- mediaSequence: oldPlaylist.mediaSequence + oldPlaylist.segments.length
- });
- playlist.segments[0].discontinuity = true;
- playlist.discontinuityStarts.unshift(0); // No matching segment does not necessarily mean there's missing content.
- //
- // If the new playlist's timeline is the same as the last seen segment's timeline,
- // then a discontinuity can be added to identify that there's potentially missing
- // content. If there's no missing content, the discontinuity should still be rather
- // harmless. It's possible that if segment durations are accurate enough, that the
- // existence of a gap can be determined using the presentation times and durations,
- // but if the segment timing info is off, it may introduce more problems than simply
- // adding the discontinuity.
- //
- // If the new playlist's timeline is different from the last seen segment's timeline,
- // then a discontinuity can be added to identify that this is the first seen segment
- // of a new timeline. However, the logic at the start of this function that
- // determined the disconinuity sequence by timeline index is now off by one (the
- // discontinuity of the newest timeline hasn't yet fallen off the manifest...since
- // we added it), so the disconinuity sequence must be decremented.
- //
- // A period may also have a duration of zero, so the case of no segments is handled
- // here even though we don't yet support early available periods.
-
- if (!oldPlaylist.segments.length && playlist.timeline > oldPlaylist.timeline || oldPlaylist.segments.length && playlist.timeline > oldPlaylist.segments[oldPlaylist.segments.length - 1].timeline) {
- playlist.discontinuitySequence--;
- }
- return;
- } // If the first segment matched with a prior segment on a discontinuity (it's matching
- // on the first segment of a period), then the discontinuitySequence shouldn't be the
- // timeline's matching one, but instead should be the one prior, and the first segment
- // of the new manifest should be marked with a discontinuity.
- //
- // The reason for this special case is that discontinuity sequence shows how many
- // discontinuities have fallen off of the playlist, and discontinuities are marked on
- // the first segment of a new "timeline." Because of this, while DASH will retain that
- // Period while the "timeline" exists, HLS keeps track of it via the discontinuity
- // sequence, and that first segment is an indicator, but can be removed before that
- // timeline is gone.
-
- const oldMatchingSegment = oldPlaylist.segments[oldMatchingSegmentIndex];
- if (oldMatchingSegment.discontinuity && !firstNewSegment.discontinuity) {
- firstNewSegment.discontinuity = true;
- playlist.discontinuityStarts.unshift(0);
- playlist.discontinuitySequence--;
- }
- updateMediaSequenceForPlaylist({
- playlist,
- mediaSequence: oldPlaylist.segments[oldMatchingSegmentIndex].number
- });
- });
- };
- /**
- * Given an old parsed manifest object and a new parsed manifest object, updates the
- * sequence and timing values within the new manifest to ensure that it lines up with the
- * old.
- *
- * @param {Array} oldManifest - the old main manifest object
- * @param {Array} newManifest - the new main manifest object
- *
- * @return {Object} the updated new manifest object
- */
-
- const positionManifestOnTimeline = ({
- oldManifest,
- newManifest
- }) => {
- // Starting from v4.1.2 of the IOP, section 4.4.3.3 states:
- //
- // "MPD@availabilityStartTime and Period@start shall not be changed over MPD updates."
- //
- // This was added from https://github.com/Dash-Industry-Forum/DASH-IF-IOP/issues/160
- //
- // Because of this change, and the difficulty of supporting periods with changing start
- // times, periods with changing start times are not supported. This makes the logic much
- // simpler, since periods with the same start time can be considerred the same period
- // across refreshes.
- //
- // To give an example as to the difficulty of handling periods where the start time may
- // change, if a single period manifest is refreshed with another manifest with a single
- // period, and both the start and end times are increased, then the only way to determine
- // if it's a new period or an old one that has changed is to look through the segments of
- // each playlist and determine the presentation time bounds to find a match. In addition,
- // if the period start changed to exceed the old period end, then there would be no
- // match, and it would not be possible to determine whether the refreshed period is a new
- // one or the old one.
- const oldPlaylists = oldManifest.playlists.concat(getMediaGroupPlaylists(oldManifest));
- const newPlaylists = newManifest.playlists.concat(getMediaGroupPlaylists(newManifest)); // Save all seen timelineStarts to the new manifest. Although this potentially means that
- // there's a "memory leak" in that it will never stop growing, in reality, only a couple
- // of properties are saved for each seen Period. Even long running live streams won't
- // generate too many Periods, unless the stream is watched for decades. In the future,
- // this can be optimized by mapping to discontinuity sequence numbers for each timeline,
- // but it may not become an issue, and the additional info can be useful for debugging.
-
- newManifest.timelineStarts = getUniqueTimelineStarts([oldManifest.timelineStarts, newManifest.timelineStarts]);
- updateSequenceNumbers({
- oldPlaylists,
- newPlaylists,
- timelineStarts: newManifest.timelineStarts
- });
- return newManifest;
- };
- const generateSidxKey = sidx => sidx && sidx.uri + '-' + byteRangeToString(sidx.byterange);
- const mergeDiscontiguousPlaylists = playlists => {
- // Break out playlists into groups based on their baseUrl
- const playlistsByBaseUrl = playlists.reduce(function (acc, cur) {
- if (!acc[cur.attributes.baseUrl]) {
- acc[cur.attributes.baseUrl] = [];
- }
- acc[cur.attributes.baseUrl].push(cur);
- return acc;
- }, {});
- let allPlaylists = [];
- Object.values(playlistsByBaseUrl).forEach(playlistGroup => {
- const mergedPlaylists = values(playlistGroup.reduce((acc, playlist) => {
- // assuming playlist IDs are the same across periods
- // TODO: handle multiperiod where representation sets are not the same
- // across periods
- const name = playlist.attributes.id + (playlist.attributes.lang || '');
- if (!acc[name]) {
- // First Period
- acc[name] = playlist;
- acc[name].attributes.timelineStarts = [];
- } else {
- // Subsequent Periods
- if (playlist.segments) {
- // first segment of subsequent periods signal a discontinuity
- if (playlist.segments[0]) {
- playlist.segments[0].discontinuity = true;
- }
- acc[name].segments.push(...playlist.segments);
- } // bubble up contentProtection, this assumes all DRM content
- // has the same contentProtection
-
- if (playlist.attributes.contentProtection) {
- acc[name].attributes.contentProtection = playlist.attributes.contentProtection;
- }
- }
- acc[name].attributes.timelineStarts.push({
- // Although they represent the same number, it's important to have both to make it
- // compatible with HLS potentially having a similar attribute.
- start: playlist.attributes.periodStart,
- timeline: playlist.attributes.periodStart
- });
- return acc;
- }, {}));
- allPlaylists = allPlaylists.concat(mergedPlaylists);
- });
- return allPlaylists.map(playlist => {
- playlist.discontinuityStarts = findIndexes(playlist.segments || [], 'discontinuity');
- return playlist;
- });
- };
- const addSidxSegmentsToPlaylist = (playlist, sidxMapping) => {
- const sidxKey = generateSidxKey(playlist.sidx);
- const sidxMatch = sidxKey && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx;
- if (sidxMatch) {
- addSidxSegmentsToPlaylist$1(playlist, sidxMatch, playlist.sidx.resolvedUri);
- }
- return playlist;
- };
- const addSidxSegmentsToPlaylists = (playlists, sidxMapping = {}) => {
- if (!Object.keys(sidxMapping).length) {
- return playlists;
- }
- for (const i in playlists) {
- playlists[i] = addSidxSegmentsToPlaylist(playlists[i], sidxMapping);
- }
- return playlists;
- };
- const formatAudioPlaylist = ({
- attributes,
- segments,
- sidx,
- mediaSequence,
- discontinuitySequence,
- discontinuityStarts
- }, isAudioOnly) => {
- const playlist = {
- attributes: {
- NAME: attributes.id,
- BANDWIDTH: attributes.bandwidth,
- CODECS: attributes.codecs,
- ['PROGRAM-ID']: 1
- },
- uri: '',
- endList: attributes.type === 'static',
- timeline: attributes.periodStart,
- resolvedUri: attributes.baseUrl || '',
- targetDuration: attributes.duration,
- discontinuitySequence,
- discontinuityStarts,
- timelineStarts: attributes.timelineStarts,
- mediaSequence,
- segments
- };
- if (attributes.contentProtection) {
- playlist.contentProtection = attributes.contentProtection;
- }
- if (attributes.serviceLocation) {
- playlist.attributes.serviceLocation = attributes.serviceLocation;
- }
- if (sidx) {
- playlist.sidx = sidx;
- }
- if (isAudioOnly) {
- playlist.attributes.AUDIO = 'audio';
- playlist.attributes.SUBTITLES = 'subs';
- }
- return playlist;
- };
- const formatVttPlaylist = ({
- attributes,
- segments,
- mediaSequence,
- discontinuityStarts,
- discontinuitySequence
- }) => {
- if (typeof segments === 'undefined') {
- // vtt tracks may use single file in BaseURL
- segments = [{
- uri: attributes.baseUrl,
- timeline: attributes.periodStart,
- resolvedUri: attributes.baseUrl || '',
- duration: attributes.sourceDuration,
- number: 0
- }]; // targetDuration should be the same duration as the only segment
-
- attributes.duration = attributes.sourceDuration;
- }
- const m3u8Attributes = {
- NAME: attributes.id,
- BANDWIDTH: attributes.bandwidth,
- ['PROGRAM-ID']: 1
- };
- if (attributes.codecs) {
- m3u8Attributes.CODECS = attributes.codecs;
- }
- const vttPlaylist = {
- attributes: m3u8Attributes,
- uri: '',
- endList: attributes.type === 'static',
- timeline: attributes.periodStart,
- resolvedUri: attributes.baseUrl || '',
- targetDuration: attributes.duration,
- timelineStarts: attributes.timelineStarts,
- discontinuityStarts,
- discontinuitySequence,
- mediaSequence,
- segments
- };
- if (attributes.serviceLocation) {
- vttPlaylist.attributes.serviceLocation = attributes.serviceLocation;
- }
- return vttPlaylist;
- };
- const organizeAudioPlaylists = (playlists, sidxMapping = {}, isAudioOnly = false) => {
- let mainPlaylist;
- const formattedPlaylists = playlists.reduce((a, playlist) => {
- const role = playlist.attributes.role && playlist.attributes.role.value || '';
- const language = playlist.attributes.lang || '';
- let label = playlist.attributes.label || 'main';
- if (language && !playlist.attributes.label) {
- const roleLabel = role ? ` (${role})` : '';
- label = `${playlist.attributes.lang}${roleLabel}`;
- }
- if (!a[label]) {
- a[label] = {
- language,
- autoselect: true,
- default: role === 'main',
- playlists: [],
- uri: ''
- };
- }
- const formatted = addSidxSegmentsToPlaylist(formatAudioPlaylist(playlist, isAudioOnly), sidxMapping);
- a[label].playlists.push(formatted);
- if (typeof mainPlaylist === 'undefined' && role === 'main') {
- mainPlaylist = playlist;
- mainPlaylist.default = true;
- }
- return a;
- }, {}); // if no playlists have role "main", mark the first as main
-
- if (!mainPlaylist) {
- const firstLabel = Object.keys(formattedPlaylists)[0];
- formattedPlaylists[firstLabel].default = true;
- }
- return formattedPlaylists;
- };
- const organizeVttPlaylists = (playlists, sidxMapping = {}) => {
- return playlists.reduce((a, playlist) => {
- const label = playlist.attributes.label || playlist.attributes.lang || 'text';
- if (!a[label]) {
- a[label] = {
- language: label,
- default: false,
- autoselect: false,
- playlists: [],
- uri: ''
- };
- }
- a[label].playlists.push(addSidxSegmentsToPlaylist(formatVttPlaylist(playlist), sidxMapping));
- return a;
- }, {});
- };
- const organizeCaptionServices = captionServices => captionServices.reduce((svcObj, svc) => {
- if (!svc) {
- return svcObj;
- }
- svc.forEach(service => {
- const {
- channel,
- language
- } = service;
- svcObj[language] = {
- autoselect: false,
- default: false,
- instreamId: channel,
- language
- };
- if (service.hasOwnProperty('aspectRatio')) {
- svcObj[language].aspectRatio = service.aspectRatio;
- }
- if (service.hasOwnProperty('easyReader')) {
- svcObj[language].easyReader = service.easyReader;
- }
- if (service.hasOwnProperty('3D')) {
- svcObj[language]['3D'] = service['3D'];
- }
- });
- return svcObj;
- }, {});
- const formatVideoPlaylist = ({
- attributes,
- segments,
- sidx,
- discontinuityStarts
- }) => {
- const playlist = {
- attributes: {
- NAME: attributes.id,
- AUDIO: 'audio',
- SUBTITLES: 'subs',
- RESOLUTION: {
- width: attributes.width,
- height: attributes.height
- },
- CODECS: attributes.codecs,
- BANDWIDTH: attributes.bandwidth,
- ['PROGRAM-ID']: 1
- },
- uri: '',
- endList: attributes.type === 'static',
- timeline: attributes.periodStart,
- resolvedUri: attributes.baseUrl || '',
- targetDuration: attributes.duration,
- discontinuityStarts,
- timelineStarts: attributes.timelineStarts,
- segments
- };
- if (attributes.frameRate) {
- playlist.attributes['FRAME-RATE'] = attributes.frameRate;
- }
- if (attributes.contentProtection) {
- playlist.contentProtection = attributes.contentProtection;
- }
- if (attributes.serviceLocation) {
- playlist.attributes.serviceLocation = attributes.serviceLocation;
- }
- if (sidx) {
- playlist.sidx = sidx;
- }
- return playlist;
- };
- const videoOnly = ({
- attributes
- }) => attributes.mimeType === 'video/mp4' || attributes.mimeType === 'video/webm' || attributes.contentType === 'video';
- const audioOnly = ({
- attributes
- }) => attributes.mimeType === 'audio/mp4' || attributes.mimeType === 'audio/webm' || attributes.contentType === 'audio';
- const vttOnly = ({
- attributes
- }) => attributes.mimeType === 'text/vtt' || attributes.contentType === 'text';
- /**
- * Contains start and timeline properties denoting a timeline start. For DASH, these will
- * be the same number.
- *
- * @typedef {Object} TimelineStart
- * @property {number} start - the start time of the timeline
- * @property {number} timeline - the timeline number
- */
-
- /**
- * Adds appropriate media and discontinuity sequence values to the segments and playlists.
- *
- * Throughout mpd-parser, the `number` attribute is used in relation to `startNumber`, a
- * DASH specific attribute used in constructing segment URI's from templates. However, from
- * an HLS perspective, the `number` attribute on a segment would be its `mediaSequence`
- * value, which should start at the original media sequence value (or 0) and increment by 1
- * for each segment thereafter. Since DASH's `startNumber` values are independent per
- * period, it doesn't make sense to use it for `number`. Instead, assume everything starts
- * from a 0 mediaSequence value and increment from there.
- *
- * Note that VHS currently doesn't use the `number` property, but it can be helpful for
- * debugging and making sense of the manifest.
- *
- * For live playlists, to account for values increasing in manifests when periods are
- * removed on refreshes, merging logic should be used to update the numbers to their
- * appropriate values (to ensure they're sequential and increasing).
- *
- * @param {Object[]} playlists - the playlists to update
- * @param {TimelineStart[]} timelineStarts - the timeline starts for the manifest
- */
-
- const addMediaSequenceValues = (playlists, timelineStarts) => {
- // increment all segments sequentially
- playlists.forEach(playlist => {
- playlist.mediaSequence = 0;
- playlist.discontinuitySequence = timelineStarts.findIndex(function ({
- timeline
- }) {
- return timeline === playlist.timeline;
- });
- if (!playlist.segments) {
- return;
- }
- playlist.segments.forEach((segment, index) => {
- segment.number = index;
- });
- });
- };
- /**
- * Given a media group object, flattens all playlists within the media group into a single
- * array.
- *
- * @param {Object} mediaGroupObject - the media group object
- *
- * @return {Object[]}
- * The media group playlists
- */
-
- const flattenMediaGroupPlaylists = mediaGroupObject => {
- if (!mediaGroupObject) {
- return [];
- }
- return Object.keys(mediaGroupObject).reduce((acc, label) => {
- const labelContents = mediaGroupObject[label];
- return acc.concat(labelContents.playlists);
- }, []);
- };
- const toM3u8 = ({
- dashPlaylists,
- locations,
- contentSteering,
- sidxMapping = {},
- previousManifest,
- eventStream
- }) => {
- if (!dashPlaylists.length) {
- return {};
- } // grab all main manifest attributes
-
- const {
- sourceDuration: duration,
- type,
- suggestedPresentationDelay,
- minimumUpdatePeriod
- } = dashPlaylists[0].attributes;
- const videoPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(videoOnly)).map(formatVideoPlaylist);
- const audioPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(audioOnly));
- const vttPlaylists = mergeDiscontiguousPlaylists(dashPlaylists.filter(vttOnly));
- const captions = dashPlaylists.map(playlist => playlist.attributes.captionServices).filter(Boolean);
- const manifest = {
- allowCache: true,
- discontinuityStarts: [],
- segments: [],
- endList: true,
- mediaGroups: {
- AUDIO: {},
- VIDEO: {},
- ['CLOSED-CAPTIONS']: {},
- SUBTITLES: {}
- },
- uri: '',
- duration,
- playlists: addSidxSegmentsToPlaylists(videoPlaylists, sidxMapping)
- };
- if (minimumUpdatePeriod >= 0) {
- manifest.minimumUpdatePeriod = minimumUpdatePeriod * 1000;
- }
- if (locations) {
- manifest.locations = locations;
- }
- if (contentSteering) {
- manifest.contentSteering = contentSteering;
- }
- if (type === 'dynamic') {
- manifest.suggestedPresentationDelay = suggestedPresentationDelay;
- }
- if (eventStream && eventStream.length > 0) {
- manifest.eventStream = eventStream;
- }
- const isAudioOnly = manifest.playlists.length === 0;
- const organizedAudioGroup = audioPlaylists.length ? organizeAudioPlaylists(audioPlaylists, sidxMapping, isAudioOnly) : null;
- const organizedVttGroup = vttPlaylists.length ? organizeVttPlaylists(vttPlaylists, sidxMapping) : null;
- const formattedPlaylists = videoPlaylists.concat(flattenMediaGroupPlaylists(organizedAudioGroup), flattenMediaGroupPlaylists(organizedVttGroup));
- const playlistTimelineStarts = formattedPlaylists.map(({
- timelineStarts
- }) => timelineStarts);
- manifest.timelineStarts = getUniqueTimelineStarts(playlistTimelineStarts);
- addMediaSequenceValues(formattedPlaylists, manifest.timelineStarts);
- if (organizedAudioGroup) {
- manifest.mediaGroups.AUDIO.audio = organizedAudioGroup;
- }
- if (organizedVttGroup) {
- manifest.mediaGroups.SUBTITLES.subs = organizedVttGroup;
- }
- if (captions.length) {
- manifest.mediaGroups['CLOSED-CAPTIONS'].cc = organizeCaptionServices(captions);
- }
- if (previousManifest) {
- return positionManifestOnTimeline({
- oldManifest: previousManifest,
- newManifest: manifest
- });
- }
- return manifest;
- };
-
- /**
- * Calculates the R (repetition) value for a live stream (for the final segment
- * in a manifest where the r value is negative 1)
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {number} time
- * current time (typically the total time up until the final segment)
- * @param {number} duration
- * duration property for the given <S />
- *
- * @return {number}
- * R value to reach the end of the given period
- */
- const getLiveRValue = (attributes, time, duration) => {
- const {
- NOW,
- clientOffset,
- availabilityStartTime,
- timescale = 1,
- periodStart = 0,
- minimumUpdatePeriod = 0
- } = attributes;
- const now = (NOW + clientOffset) / 1000;
- const periodStartWC = availabilityStartTime + periodStart;
- const periodEndWC = now + minimumUpdatePeriod;
- const periodDuration = periodEndWC - periodStartWC;
- return Math.ceil((periodDuration * timescale - time) / duration);
- };
- /**
- * Uses information provided by SegmentTemplate.SegmentTimeline to determine segment
- * timing and duration
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {Object[]} segmentTimeline
- * List of objects representing the attributes of each S element contained within
- *
- * @return {{number: number, duration: number, time: number, timeline: number}[]}
- * List of Objects with segment timing and duration info
- */
-
- const parseByTimeline = (attributes, segmentTimeline) => {
- const {
- type,
- minimumUpdatePeriod = 0,
- media = '',
- sourceDuration,
- timescale = 1,
- startNumber = 1,
- periodStart: timeline
- } = attributes;
- const segments = [];
- let time = -1;
- for (let sIndex = 0; sIndex < segmentTimeline.length; sIndex++) {
- const S = segmentTimeline[sIndex];
- const duration = S.d;
- const repeat = S.r || 0;
- const segmentTime = S.t || 0;
- if (time < 0) {
- // first segment
- time = segmentTime;
- }
- if (segmentTime && segmentTime > time) {
- // discontinuity
- // TODO: How to handle this type of discontinuity
- // timeline++ here would treat it like HLS discontuity and content would
- // get appended without gap
- // E.G.
- // <S t="0" d="1" />
- // <S d="1" />
- // <S d="1" />
- // <S t="5" d="1" />
- // would have $Time$ values of [0, 1, 2, 5]
- // should this be appened at time positions [0, 1, 2, 3],(#EXT-X-DISCONTINUITY)
- // or [0, 1, 2, gap, gap, 5]? (#EXT-X-GAP)
- // does the value of sourceDuration consider this when calculating arbitrary
- // negative @r repeat value?
- // E.G. Same elements as above with this added at the end
- // <S d="1" r="-1" />
- // with a sourceDuration of 10
- // Would the 2 gaps be included in the time duration calculations resulting in
- // 8 segments with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9] or 10 segments
- // with $Time$ values of [0, 1, 2, 5, 6, 7, 8, 9, 10, 11] ?
- time = segmentTime;
- }
- let count;
- if (repeat < 0) {
- const nextS = sIndex + 1;
- if (nextS === segmentTimeline.length) {
- // last segment
- if (type === 'dynamic' && minimumUpdatePeriod > 0 && media.indexOf('$Number$') > 0) {
- count = getLiveRValue(attributes, time, duration);
- } else {
- // TODO: This may be incorrect depending on conclusion of TODO above
- count = (sourceDuration * timescale - time) / duration;
- }
- } else {
- count = (segmentTimeline[nextS].t - time) / duration;
- }
- } else {
- count = repeat + 1;
- }
- const end = startNumber + segments.length + count;
- let number = startNumber + segments.length;
- while (number < end) {
- segments.push({
- number,
- duration: duration / timescale,
- time,
- timeline
- });
- time += duration;
- number++;
- }
- }
- return segments;
- };
- const identifierPattern = /\$([A-z]*)(?:(%0)([0-9]+)d)?\$/g;
- /**
- * Replaces template identifiers with corresponding values. To be used as the callback
- * for String.prototype.replace
- *
- * @name replaceCallback
- * @function
- * @param {string} match
- * Entire match of identifier
- * @param {string} identifier
- * Name of matched identifier
- * @param {string} format
- * Format tag string. Its presence indicates that padding is expected
- * @param {string} width
- * Desired length of the replaced value. Values less than this width shall be left
- * zero padded
- * @return {string}
- * Replacement for the matched identifier
- */
-
- /**
- * Returns a function to be used as a callback for String.prototype.replace to replace
- * template identifiers
- *
- * @param {Obect} values
- * Object containing values that shall be used to replace known identifiers
- * @param {number} values.RepresentationID
- * Value of the Representation@id attribute
- * @param {number} values.Number
- * Number of the corresponding segment
- * @param {number} values.Bandwidth
- * Value of the Representation@bandwidth attribute.
- * @param {number} values.Time
- * Timestamp value of the corresponding segment
- * @return {replaceCallback}
- * Callback to be used with String.prototype.replace to replace identifiers
- */
-
- const identifierReplacement = values => (match, identifier, format, width) => {
- if (match === '$$') {
- // escape sequence
- return '$';
- }
- if (typeof values[identifier] === 'undefined') {
- return match;
- }
- const value = '' + values[identifier];
- if (identifier === 'RepresentationID') {
- // Format tag shall not be present with RepresentationID
- return value;
- }
- if (!format) {
- width = 1;
- } else {
- width = parseInt(width, 10);
- }
- if (value.length >= width) {
- return value;
- }
- return `${new Array(width - value.length + 1).join('0')}${value}`;
- };
- /**
- * Constructs a segment url from a template string
- *
- * @param {string} url
- * Template string to construct url from
- * @param {Obect} values
- * Object containing values that shall be used to replace known identifiers
- * @param {number} values.RepresentationID
- * Value of the Representation@id attribute
- * @param {number} values.Number
- * Number of the corresponding segment
- * @param {number} values.Bandwidth
- * Value of the Representation@bandwidth attribute.
- * @param {number} values.Time
- * Timestamp value of the corresponding segment
- * @return {string}
- * Segment url with identifiers replaced
- */
-
- const constructTemplateUrl = (url, values) => url.replace(identifierPattern, identifierReplacement(values));
- /**
- * Generates a list of objects containing timing and duration information about each
- * segment needed to generate segment uris and the complete segment object
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {Object[]|undefined} segmentTimeline
- * List of objects representing the attributes of each S element contained within
- * the SegmentTimeline element
- * @return {{number: number, duration: number, time: number, timeline: number}[]}
- * List of Objects with segment timing and duration info
- */
-
- const parseTemplateInfo = (attributes, segmentTimeline) => {
- if (!attributes.duration && !segmentTimeline) {
- // if neither @duration or SegmentTimeline are present, then there shall be exactly
- // one media segment
- return [{
- number: attributes.startNumber || 1,
- duration: attributes.sourceDuration,
- time: 0,
- timeline: attributes.periodStart
- }];
- }
- if (attributes.duration) {
- return parseByDuration(attributes);
- }
- return parseByTimeline(attributes, segmentTimeline);
- };
- /**
- * Generates a list of segments using information provided by the SegmentTemplate element
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {Object[]|undefined} segmentTimeline
- * List of objects representing the attributes of each S element contained within
- * the SegmentTimeline element
- * @return {Object[]}
- * List of segment objects
- */
-
- const segmentsFromTemplate = (attributes, segmentTimeline) => {
- const templateValues = {
- RepresentationID: attributes.id,
- Bandwidth: attributes.bandwidth || 0
- };
- const {
- initialization = {
- sourceURL: '',
- range: ''
- }
- } = attributes;
- const mapSegment = urlTypeToSegment({
- baseUrl: attributes.baseUrl,
- source: constructTemplateUrl(initialization.sourceURL, templateValues),
- range: initialization.range
- });
- const segments = parseTemplateInfo(attributes, segmentTimeline);
- return segments.map(segment => {
- templateValues.Number = segment.number;
- templateValues.Time = segment.time;
- const uri = constructTemplateUrl(attributes.media || '', templateValues); // See DASH spec section 5.3.9.2.2
- // - if timescale isn't present on any level, default to 1.
-
- const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0
-
- const presentationTimeOffset = attributes.presentationTimeOffset || 0;
- const presentationTime =
- // Even if the @t attribute is not specified for the segment, segment.time is
- // calculated in mpd-parser prior to this, so it's assumed to be available.
- attributes.periodStart + (segment.time - presentationTimeOffset) / timescale;
- const map = {
- uri,
- timeline: segment.timeline,
- duration: segment.duration,
- resolvedUri: resolveUrl$1(attributes.baseUrl || '', uri),
- map: mapSegment,
- number: segment.number,
- presentationTime
- };
- return map;
- });
- };
-
- /**
- * Converts a <SegmentUrl> (of type URLType from the DASH spec 5.3.9.2 Table 14)
- * to an object that matches the output of a segment in videojs/mpd-parser
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {Object} segmentUrl
- * <SegmentURL> node to translate into a segment object
- * @return {Object} translated segment object
- */
-
- const SegmentURLToSegmentObject = (attributes, segmentUrl) => {
- const {
- baseUrl,
- initialization = {}
- } = attributes;
- const initSegment = urlTypeToSegment({
- baseUrl,
- source: initialization.sourceURL,
- range: initialization.range
- });
- const segment = urlTypeToSegment({
- baseUrl,
- source: segmentUrl.media,
- range: segmentUrl.mediaRange
- });
- segment.map = initSegment;
- return segment;
- };
- /**
- * Generates a list of segments using information provided by the SegmentList element
- * SegmentList (DASH SPEC Section 5.3.9.3.2) contains a set of <SegmentURL> nodes. Each
- * node should be translated into segment.
- *
- * @param {Object} attributes
- * Object containing all inherited attributes from parent elements with attribute
- * names as keys
- * @param {Object[]|undefined} segmentTimeline
- * List of objects representing the attributes of each S element contained within
- * the SegmentTimeline element
- * @return {Object.<Array>} list of segments
- */
-
- const segmentsFromList = (attributes, segmentTimeline) => {
- const {
- duration,
- segmentUrls = [],
- periodStart
- } = attributes; // Per spec (5.3.9.2.1) no way to determine segment duration OR
- // if both SegmentTimeline and @duration are defined, it is outside of spec.
-
- if (!duration && !segmentTimeline || duration && segmentTimeline) {
- throw new Error(errors.SEGMENT_TIME_UNSPECIFIED);
- }
- const segmentUrlMap = segmentUrls.map(segmentUrlObject => SegmentURLToSegmentObject(attributes, segmentUrlObject));
- let segmentTimeInfo;
- if (duration) {
- segmentTimeInfo = parseByDuration(attributes);
- }
- if (segmentTimeline) {
- segmentTimeInfo = parseByTimeline(attributes, segmentTimeline);
- }
- const segments = segmentTimeInfo.map((segmentTime, index) => {
- if (segmentUrlMap[index]) {
- const segment = segmentUrlMap[index]; // See DASH spec section 5.3.9.2.2
- // - if timescale isn't present on any level, default to 1.
-
- const timescale = attributes.timescale || 1; // - if presentationTimeOffset isn't present on any level, default to 0
-
- const presentationTimeOffset = attributes.presentationTimeOffset || 0;
- segment.timeline = segmentTime.timeline;
- segment.duration = segmentTime.duration;
- segment.number = segmentTime.number;
- segment.presentationTime = periodStart + (segmentTime.time - presentationTimeOffset) / timescale;
- return segment;
- } // Since we're mapping we should get rid of any blank segments (in case
- // the given SegmentTimeline is handling for more elements than we have
- // SegmentURLs for).
- }).filter(segment => segment);
- return segments;
- };
- const generateSegments = ({
- attributes,
- segmentInfo
- }) => {
- let segmentAttributes;
- let segmentsFn;
- if (segmentInfo.template) {
- segmentsFn = segmentsFromTemplate;
- segmentAttributes = merge$1(attributes, segmentInfo.template);
- } else if (segmentInfo.base) {
- segmentsFn = segmentsFromBase;
- segmentAttributes = merge$1(attributes, segmentInfo.base);
- } else if (segmentInfo.list) {
- segmentsFn = segmentsFromList;
- segmentAttributes = merge$1(attributes, segmentInfo.list);
- }
- const segmentsInfo = {
- attributes
- };
- if (!segmentsFn) {
- return segmentsInfo;
- }
- const segments = segmentsFn(segmentAttributes, segmentInfo.segmentTimeline); // The @duration attribute will be used to determin the playlist's targetDuration which
- // must be in seconds. Since we've generated the segment list, we no longer need
- // @duration to be in @timescale units, so we can convert it here.
-
- if (segmentAttributes.duration) {
- const {
- duration,
- timescale = 1
- } = segmentAttributes;
- segmentAttributes.duration = duration / timescale;
- } else if (segments.length) {
- // if there is no @duration attribute, use the largest segment duration as
- // as target duration
- segmentAttributes.duration = segments.reduce((max, segment) => {
- return Math.max(max, Math.ceil(segment.duration));
- }, 0);
- } else {
- segmentAttributes.duration = 0;
- }
- segmentsInfo.attributes = segmentAttributes;
- segmentsInfo.segments = segments; // This is a sidx box without actual segment information
-
- if (segmentInfo.base && segmentAttributes.indexRange) {
- segmentsInfo.sidx = segments[0];
- segmentsInfo.segments = [];
- }
- return segmentsInfo;
- };
- const toPlaylists = representations => representations.map(generateSegments);
- const findChildren = (element, name) => from(element.childNodes).filter(({
- tagName
- }) => tagName === name);
- const getContent = element => element.textContent.trim();
-
- /**
- * Converts the provided string that may contain a division operation to a number.
- *
- * @param {string} value - the provided string value
- *
- * @return {number} the parsed string value
- */
- const parseDivisionValue = value => {
- return parseFloat(value.split('/').reduce((prev, current) => prev / current));
- };
- const parseDuration = str => {
- const SECONDS_IN_YEAR = 365 * 24 * 60 * 60;
- const SECONDS_IN_MONTH = 30 * 24 * 60 * 60;
- const SECONDS_IN_DAY = 24 * 60 * 60;
- const SECONDS_IN_HOUR = 60 * 60;
- const SECONDS_IN_MIN = 60; // P10Y10M10DT10H10M10.1S
-
- const durationRegex = /P(?:(\d*)Y)?(?:(\d*)M)?(?:(\d*)D)?(?:T(?:(\d*)H)?(?:(\d*)M)?(?:([\d.]*)S)?)?/;
- const match = durationRegex.exec(str);
- if (!match) {
- return 0;
- }
- const [year, month, day, hour, minute, second] = match.slice(1);
- return parseFloat(year || 0) * SECONDS_IN_YEAR + parseFloat(month || 0) * SECONDS_IN_MONTH + parseFloat(day || 0) * SECONDS_IN_DAY + parseFloat(hour || 0) * SECONDS_IN_HOUR + parseFloat(minute || 0) * SECONDS_IN_MIN + parseFloat(second || 0);
- };
- const parseDate = str => {
- // Date format without timezone according to ISO 8601
- // YYY-MM-DDThh:mm:ss.ssssss
- const dateRegex = /^\d+-\d+-\d+T\d+:\d+:\d+(\.\d+)?$/; // If the date string does not specifiy a timezone, we must specifiy UTC. This is
- // expressed by ending with 'Z'
-
- if (dateRegex.test(str)) {
- str += 'Z';
- }
- return Date.parse(str);
- };
- const parsers = {
- /**
- * Specifies the duration of the entire Media Presentation. Format is a duration string
- * as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The duration in seconds
- */
- mediaPresentationDuration(value) {
- return parseDuration(value);
- },
- /**
- * Specifies the Segment availability start time for all Segments referred to in this
- * MPD. For a dynamic manifest, it specifies the anchor for the earliest availability
- * time. Format is a date string as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The date as seconds from unix epoch
- */
- availabilityStartTime(value) {
- return parseDate(value) / 1000;
- },
- /**
- * Specifies the smallest period between potential changes to the MPD. Format is a
- * duration string as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The duration in seconds
- */
- minimumUpdatePeriod(value) {
- return parseDuration(value);
- },
- /**
- * Specifies the suggested presentation delay. Format is a
- * duration string as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The duration in seconds
- */
- suggestedPresentationDelay(value) {
- return parseDuration(value);
- },
- /**
- * specifices the type of mpd. Can be either "static" or "dynamic"
- *
- * @param {string} value
- * value of attribute as a string
- *
- * @return {string}
- * The type as a string
- */
- type(value) {
- return value;
- },
- /**
- * Specifies the duration of the smallest time shifting buffer for any Representation
- * in the MPD. Format is a duration string as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The duration in seconds
- */
- timeShiftBufferDepth(value) {
- return parseDuration(value);
- },
- /**
- * Specifies the PeriodStart time of the Period relative to the availabilityStarttime.
- * Format is a duration string as specified in ISO 8601
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The duration in seconds
- */
- start(value) {
- return parseDuration(value);
- },
- /**
- * Specifies the width of the visual presentation
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed width
- */
- width(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the height of the visual presentation
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed height
- */
- height(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the bitrate of the representation
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed bandwidth
- */
- bandwidth(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the frame rate of the representation
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed frame rate
- */
- frameRate(value) {
- return parseDivisionValue(value);
- },
- /**
- * Specifies the number of the first Media Segment in this Representation in the Period
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed number
- */
- startNumber(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the timescale in units per seconds
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed timescale
- */
- timescale(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the presentationTimeOffset.
- *
- * @param {string} value
- * value of the attribute as a string
- *
- * @return {number}
- * The parsed presentationTimeOffset
- */
- presentationTimeOffset(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the constant approximate Segment duration
- * NOTE: The <Period> element also contains an @duration attribute. This duration
- * specifies the duration of the Period. This attribute is currently not
- * supported by the rest of the parser, however we still check for it to prevent
- * errors.
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed duration
- */
- duration(value) {
- const parsedValue = parseInt(value, 10);
- if (isNaN(parsedValue)) {
- return parseDuration(value);
- }
- return parsedValue;
- },
- /**
- * Specifies the Segment duration, in units of the value of the @timescale.
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed duration
- */
- d(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the MPD start time, in @timescale units, the first Segment in the series
- * starts relative to the beginning of the Period
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed time
- */
- t(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the repeat count of the number of following contiguous Segments with the
- * same duration expressed by the value of @d
- *
- * @param {string} value
- * value of attribute as a string
- * @return {number}
- * The parsed number
- */
- r(value) {
- return parseInt(value, 10);
- },
- /**
- * Specifies the presentationTime.
- *
- * @param {string} value
- * value of the attribute as a string
- *
- * @return {number}
- * The parsed presentationTime
- */
- presentationTime(value) {
- return parseInt(value, 10);
- },
- /**
- * Default parser for all other attributes. Acts as a no-op and just returns the value
- * as a string
- *
- * @param {string} value
- * value of attribute as a string
- * @return {string}
- * Unparsed value
- */
- DEFAULT(value) {
- return value;
- }
- };
- /**
- * Gets all the attributes and values of the provided node, parses attributes with known
- * types, and returns an object with attribute names mapped to values.
- *
- * @param {Node} el
- * The node to parse attributes from
- * @return {Object}
- * Object with all attributes of el parsed
- */
-
- const parseAttributes = el => {
- if (!(el && el.attributes)) {
- return {};
- }
- return from(el.attributes).reduce((a, e) => {
- const parseFn = parsers[e.name] || parsers.DEFAULT;
- a[e.name] = parseFn(e.value);
- return a;
- }, {});
- };
- const keySystemsMap = {
- 'urn:uuid:1077efec-c0b2-4d02-ace3-3c1e52e2fb4b': 'org.w3.clearkey',
- 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed': 'com.widevine.alpha',
- 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95': 'com.microsoft.playready',
- 'urn:uuid:f239e769-efa3-4850-9c16-a903c6932efb': 'com.adobe.primetime',
- // ISO_IEC 23009-1_2022 5.8.5.2.2 The mp4 Protection Scheme
- 'urn:mpeg:dash:mp4protection:2011': 'mp4protection'
- };
- /**
- * Builds a list of urls that is the product of the reference urls and BaseURL values
- *
- * @param {Object[]} references
- * List of objects containing the reference URL as well as its attributes
- * @param {Node[]} baseUrlElements
- * List of BaseURL nodes from the mpd
- * @return {Object[]}
- * List of objects with resolved urls and attributes
- */
-
- const buildBaseUrls = (references, baseUrlElements) => {
- if (!baseUrlElements.length) {
- return references;
- }
- return flatten(references.map(function (reference) {
- return baseUrlElements.map(function (baseUrlElement) {
- const initialBaseUrl = getContent(baseUrlElement);
- const resolvedBaseUrl = resolveUrl$1(reference.baseUrl, initialBaseUrl);
- const finalBaseUrl = merge$1(parseAttributes(baseUrlElement), {
- baseUrl: resolvedBaseUrl
- }); // If the URL is resolved, we want to get the serviceLocation from the reference
- // assuming there is no serviceLocation on the initialBaseUrl
-
- if (resolvedBaseUrl !== initialBaseUrl && !finalBaseUrl.serviceLocation && reference.serviceLocation) {
- finalBaseUrl.serviceLocation = reference.serviceLocation;
- }
- return finalBaseUrl;
- });
- }));
- };
- /**
- * Contains all Segment information for its containing AdaptationSet
- *
- * @typedef {Object} SegmentInformation
- * @property {Object|undefined} template
- * Contains the attributes for the SegmentTemplate node
- * @property {Object[]|undefined} segmentTimeline
- * Contains a list of atrributes for each S node within the SegmentTimeline node
- * @property {Object|undefined} list
- * Contains the attributes for the SegmentList node
- * @property {Object|undefined} base
- * Contains the attributes for the SegmentBase node
- */
-
- /**
- * Returns all available Segment information contained within the AdaptationSet node
- *
- * @param {Node} adaptationSet
- * The AdaptationSet node to get Segment information from
- * @return {SegmentInformation}
- * The Segment information contained within the provided AdaptationSet
- */
-
- const getSegmentInformation = adaptationSet => {
- const segmentTemplate = findChildren(adaptationSet, 'SegmentTemplate')[0];
- const segmentList = findChildren(adaptationSet, 'SegmentList')[0];
- const segmentUrls = segmentList && findChildren(segmentList, 'SegmentURL').map(s => merge$1({
- tag: 'SegmentURL'
- }, parseAttributes(s)));
- const segmentBase = findChildren(adaptationSet, 'SegmentBase')[0];
- const segmentTimelineParentNode = segmentList || segmentTemplate;
- const segmentTimeline = segmentTimelineParentNode && findChildren(segmentTimelineParentNode, 'SegmentTimeline')[0];
- const segmentInitializationParentNode = segmentList || segmentBase || segmentTemplate;
- const segmentInitialization = segmentInitializationParentNode && findChildren(segmentInitializationParentNode, 'Initialization')[0]; // SegmentTemplate is handled slightly differently, since it can have both
- // @initialization and an <Initialization> node. @initialization can be templated,
- // while the node can have a url and range specified. If the <SegmentTemplate> has
- // both @initialization and an <Initialization> subelement we opt to override with
- // the node, as this interaction is not defined in the spec.
-
- const template = segmentTemplate && parseAttributes(segmentTemplate);
- if (template && segmentInitialization) {
- template.initialization = segmentInitialization && parseAttributes(segmentInitialization);
- } else if (template && template.initialization) {
- // If it is @initialization we convert it to an object since this is the format that
- // later functions will rely on for the initialization segment. This is only valid
- // for <SegmentTemplate>
- template.initialization = {
- sourceURL: template.initialization
- };
- }
- const segmentInfo = {
- template,
- segmentTimeline: segmentTimeline && findChildren(segmentTimeline, 'S').map(s => parseAttributes(s)),
- list: segmentList && merge$1(parseAttributes(segmentList), {
- segmentUrls,
- initialization: parseAttributes(segmentInitialization)
- }),
- base: segmentBase && merge$1(parseAttributes(segmentBase), {
- initialization: parseAttributes(segmentInitialization)
- })
- };
- Object.keys(segmentInfo).forEach(key => {
- if (!segmentInfo[key]) {
- delete segmentInfo[key];
- }
- });
- return segmentInfo;
- };
- /**
- * Contains Segment information and attributes needed to construct a Playlist object
- * from a Representation
- *
- * @typedef {Object} RepresentationInformation
- * @property {SegmentInformation} segmentInfo
- * Segment information for this Representation
- * @property {Object} attributes
- * Inherited attributes for this Representation
- */
-
- /**
- * Maps a Representation node to an object containing Segment information and attributes
- *
- * @name inheritBaseUrlsCallback
- * @function
- * @param {Node} representation
- * Representation node from the mpd
- * @return {RepresentationInformation}
- * Representation information needed to construct a Playlist object
- */
-
- /**
- * Returns a callback for Array.prototype.map for mapping Representation nodes to
- * Segment information and attributes using inherited BaseURL nodes.
- *
- * @param {Object} adaptationSetAttributes
- * Contains attributes inherited by the AdaptationSet
- * @param {Object[]} adaptationSetBaseUrls
- * List of objects containing resolved base URLs and attributes
- * inherited by the AdaptationSet
- * @param {SegmentInformation} adaptationSetSegmentInfo
- * Contains Segment information for the AdaptationSet
- * @return {inheritBaseUrlsCallback}
- * Callback map function
- */
-
- const inheritBaseUrls = (adaptationSetAttributes, adaptationSetBaseUrls, adaptationSetSegmentInfo) => representation => {
- const repBaseUrlElements = findChildren(representation, 'BaseURL');
- const repBaseUrls = buildBaseUrls(adaptationSetBaseUrls, repBaseUrlElements);
- const attributes = merge$1(adaptationSetAttributes, parseAttributes(representation));
- const representationSegmentInfo = getSegmentInformation(representation);
- return repBaseUrls.map(baseUrl => {
- return {
- segmentInfo: merge$1(adaptationSetSegmentInfo, representationSegmentInfo),
- attributes: merge$1(attributes, baseUrl)
- };
- });
- };
- /**
- * Tranforms a series of content protection nodes to
- * an object containing pssh data by key system
- *
- * @param {Node[]} contentProtectionNodes
- * Content protection nodes
- * @return {Object}
- * Object containing pssh data by key system
- */
-
- const generateKeySystemInformation = contentProtectionNodes => {
- return contentProtectionNodes.reduce((acc, node) => {
- const attributes = parseAttributes(node); // Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated
- // as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system
- // UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do
- // .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).
-
- if (attributes.schemeIdUri) {
- attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();
- }
- const keySystem = keySystemsMap[attributes.schemeIdUri];
- if (keySystem) {
- acc[keySystem] = {
- attributes
- };
- const psshNode = findChildren(node, 'cenc:pssh')[0];
- if (psshNode) {
- const pssh = getContent(psshNode);
- acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);
- }
- }
- return acc;
- }, {});
- }; // defined in ANSI_SCTE 214-1 2016
-
- const parseCaptionServiceMetadata = service => {
- // 608 captions
- if (service.schemeIdUri === 'urn:scte:dash:cc:cea-608:2015') {
- const values = typeof service.value !== 'string' ? [] : service.value.split(';');
- return values.map(value => {
- let channel;
- let language; // default language to value
-
- language = value;
- if (/^CC\d=/.test(value)) {
- [channel, language] = value.split('=');
- } else if (/^CC\d$/.test(value)) {
- channel = value;
- }
- return {
- channel,
- language
- };
- });
- } else if (service.schemeIdUri === 'urn:scte:dash:cc:cea-708:2015') {
- const values = typeof service.value !== 'string' ? [] : service.value.split(';');
- return values.map(value => {
- const flags = {
- // service or channel number 1-63
- 'channel': undefined,
- // language is a 3ALPHA per ISO 639.2/B
- // field is required
- 'language': undefined,
- // BIT 1/0 or ?
- // default value is 1, meaning 16:9 aspect ratio, 0 is 4:3, ? is unknown
- 'aspectRatio': 1,
- // BIT 1/0
- // easy reader flag indicated the text is tailed to the needs of beginning readers
- // default 0, or off
- 'easyReader': 0,
- // BIT 1/0
- // If 3d metadata is present (CEA-708.1) then 1
- // default 0
- '3D': 0
- };
- if (/=/.test(value)) {
- const [channel, opts = ''] = value.split('=');
- flags.channel = channel;
- flags.language = value;
- opts.split(',').forEach(opt => {
- const [name, val] = opt.split(':');
- if (name === 'lang') {
- flags.language = val; // er for easyReadery
- } else if (name === 'er') {
- flags.easyReader = Number(val); // war for wide aspect ratio
- } else if (name === 'war') {
- flags.aspectRatio = Number(val);
- } else if (name === '3D') {
- flags['3D'] = Number(val);
- }
- });
- } else {
- flags.language = value;
- }
- if (flags.channel) {
- flags.channel = 'SERVICE' + flags.channel;
- }
- return flags;
- });
- }
- };
- /**
- * A map callback that will parse all event stream data for a collection of periods
- * DASH ISO_IEC_23009 5.10.2.2
- * https://dashif-documents.azurewebsites.net/Events/master/event.html#mpd-event-timing
- *
- * @param {PeriodInformation} period object containing necessary period information
- * @return a collection of parsed eventstream event objects
- */
-
- const toEventStream = period => {
- // get and flatten all EventStreams tags and parse attributes and children
- return flatten(findChildren(period.node, 'EventStream').map(eventStream => {
- const eventStreamAttributes = parseAttributes(eventStream);
- const schemeIdUri = eventStreamAttributes.schemeIdUri; // find all Events per EventStream tag and map to return objects
-
- return findChildren(eventStream, 'Event').map(event => {
- const eventAttributes = parseAttributes(event);
- const presentationTime = eventAttributes.presentationTime || 0;
- const timescale = eventStreamAttributes.timescale || 1;
- const duration = eventAttributes.duration || 0;
- const start = presentationTime / timescale + period.attributes.start;
- return {
- schemeIdUri,
- value: eventStreamAttributes.value,
- id: eventAttributes.id,
- start,
- end: start + duration / timescale,
- messageData: getContent(event) || eventAttributes.messageData,
- contentEncoding: eventStreamAttributes.contentEncoding,
- presentationTimeOffset: eventStreamAttributes.presentationTimeOffset || 0
- };
- });
- }));
- };
- /**
- * Maps an AdaptationSet node to a list of Representation information objects
- *
- * @name toRepresentationsCallback
- * @function
- * @param {Node} adaptationSet
- * AdaptationSet node from the mpd
- * @return {RepresentationInformation[]}
- * List of objects containing Representaion information
- */
-
- /**
- * Returns a callback for Array.prototype.map for mapping AdaptationSet nodes to a list of
- * Representation information objects
- *
- * @param {Object} periodAttributes
- * Contains attributes inherited by the Period
- * @param {Object[]} periodBaseUrls
- * Contains list of objects with resolved base urls and attributes
- * inherited by the Period
- * @param {string[]} periodSegmentInfo
- * Contains Segment Information at the period level
- * @return {toRepresentationsCallback}
- * Callback map function
- */
-
- const toRepresentations = (periodAttributes, periodBaseUrls, periodSegmentInfo) => adaptationSet => {
- const adaptationSetAttributes = parseAttributes(adaptationSet);
- const adaptationSetBaseUrls = buildBaseUrls(periodBaseUrls, findChildren(adaptationSet, 'BaseURL'));
- const role = findChildren(adaptationSet, 'Role')[0];
- const roleAttributes = {
- role: parseAttributes(role)
- };
- let attrs = merge$1(periodAttributes, adaptationSetAttributes, roleAttributes);
- const accessibility = findChildren(adaptationSet, 'Accessibility')[0];
- const captionServices = parseCaptionServiceMetadata(parseAttributes(accessibility));
- if (captionServices) {
- attrs = merge$1(attrs, {
- captionServices
- });
- }
- const label = findChildren(adaptationSet, 'Label')[0];
- if (label && label.childNodes.length) {
- const labelVal = label.childNodes[0].nodeValue.trim();
- attrs = merge$1(attrs, {
- label: labelVal
- });
- }
- const contentProtection = generateKeySystemInformation(findChildren(adaptationSet, 'ContentProtection'));
- if (Object.keys(contentProtection).length) {
- attrs = merge$1(attrs, {
- contentProtection
- });
- }
- const segmentInfo = getSegmentInformation(adaptationSet);
- const representations = findChildren(adaptationSet, 'Representation');
- const adaptationSetSegmentInfo = merge$1(periodSegmentInfo, segmentInfo);
- return flatten(representations.map(inheritBaseUrls(attrs, adaptationSetBaseUrls, adaptationSetSegmentInfo)));
- };
- /**
- * Contains all period information for mapping nodes onto adaptation sets.
- *
- * @typedef {Object} PeriodInformation
- * @property {Node} period.node
- * Period node from the mpd
- * @property {Object} period.attributes
- * Parsed period attributes from node plus any added
- */
-
- /**
- * Maps a PeriodInformation object to a list of Representation information objects for all
- * AdaptationSet nodes contained within the Period.
- *
- * @name toAdaptationSetsCallback
- * @function
- * @param {PeriodInformation} period
- * Period object containing necessary period information
- * @param {number} periodStart
- * Start time of the Period within the mpd
- * @return {RepresentationInformation[]}
- * List of objects containing Representaion information
- */
-
- /**
- * Returns a callback for Array.prototype.map for mapping Period nodes to a list of
- * Representation information objects
- *
- * @param {Object} mpdAttributes
- * Contains attributes inherited by the mpd
- * @param {Object[]} mpdBaseUrls
- * Contains list of objects with resolved base urls and attributes
- * inherited by the mpd
- * @return {toAdaptationSetsCallback}
- * Callback map function
- */
-
- const toAdaptationSets = (mpdAttributes, mpdBaseUrls) => (period, index) => {
- const periodBaseUrls = buildBaseUrls(mpdBaseUrls, findChildren(period.node, 'BaseURL'));
- const periodAttributes = merge$1(mpdAttributes, {
- periodStart: period.attributes.start
- });
- if (typeof period.attributes.duration === 'number') {
- periodAttributes.periodDuration = period.attributes.duration;
- }
- const adaptationSets = findChildren(period.node, 'AdaptationSet');
- const periodSegmentInfo = getSegmentInformation(period.node);
- return flatten(adaptationSets.map(toRepresentations(periodAttributes, periodBaseUrls, periodSegmentInfo)));
- };
- /**
- * Tranforms an array of content steering nodes into an object
- * containing CDN content steering information from the MPD manifest.
- *
- * For more information on the DASH spec for Content Steering parsing, see:
- * https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
- *
- * @param {Node[]} contentSteeringNodes
- * Content steering nodes
- * @param {Function} eventHandler
- * The event handler passed into the parser options to handle warnings
- * @return {Object}
- * Object containing content steering data
- */
-
- const generateContentSteeringInformation = (contentSteeringNodes, eventHandler) => {
- // If there are more than one ContentSteering tags, throw an error
- if (contentSteeringNodes.length > 1) {
- eventHandler({
- type: 'warn',
- message: 'The MPD manifest should contain no more than one ContentSteering tag'
- });
- } // Return a null value if there are no ContentSteering tags
-
- if (!contentSteeringNodes.length) {
- return null;
- }
- const infoFromContentSteeringTag = merge$1({
- serverURL: getContent(contentSteeringNodes[0])
- }, parseAttributes(contentSteeringNodes[0])); // Converts `queryBeforeStart` to a boolean, as well as setting the default value
- // to `false` if it doesn't exist
-
- infoFromContentSteeringTag.queryBeforeStart = infoFromContentSteeringTag.queryBeforeStart === 'true';
- return infoFromContentSteeringTag;
- };
- /**
- * Gets Period@start property for a given period.
- *
- * @param {Object} options
- * Options object
- * @param {Object} options.attributes
- * Period attributes
- * @param {Object} [options.priorPeriodAttributes]
- * Prior period attributes (if prior period is available)
- * @param {string} options.mpdType
- * The MPD@type these periods came from
- * @return {number|null}
- * The period start, or null if it's an early available period or error
- */
-
- const getPeriodStart = ({
- attributes,
- priorPeriodAttributes,
- mpdType
- }) => {
- // Summary of period start time calculation from DASH spec section 5.3.2.1
- //
- // A period's start is the first period's start + time elapsed after playing all
- // prior periods to this one. Periods continue one after the other in time (without
- // gaps) until the end of the presentation.
- //
- // The value of Period@start should be:
- // 1. if Period@start is present: value of Period@start
- // 2. if previous period exists and it has @duration: previous Period@start +
- // previous Period@duration
- // 3. if this is first period and MPD@type is 'static': 0
- // 4. in all other cases, consider the period an "early available period" (note: not
- // currently supported)
- // (1)
- if (typeof attributes.start === 'number') {
- return attributes.start;
- } // (2)
-
- if (priorPeriodAttributes && typeof priorPeriodAttributes.start === 'number' && typeof priorPeriodAttributes.duration === 'number') {
- return priorPeriodAttributes.start + priorPeriodAttributes.duration;
- } // (3)
-
- if (!priorPeriodAttributes && mpdType === 'static') {
- return 0;
- } // (4)
- // There is currently no logic for calculating the Period@start value if there is
- // no Period@start or prior Period@start and Period@duration available. This is not made
- // explicit by the DASH interop guidelines or the DASH spec, however, since there's
- // nothing about any other resolution strategies, it's implied. Thus, this case should
- // be considered an early available period, or error, and null should suffice for both
- // of those cases.
-
- return null;
- };
- /**
- * Traverses the mpd xml tree to generate a list of Representation information objects
- * that have inherited attributes from parent nodes
- *
- * @param {Node} mpd
- * The root node of the mpd
- * @param {Object} options
- * Available options for inheritAttributes
- * @param {string} options.manifestUri
- * The uri source of the mpd
- * @param {number} options.NOW
- * Current time per DASH IOP. Default is current time in ms since epoch
- * @param {number} options.clientOffset
- * Client time difference from NOW (in milliseconds)
- * @return {RepresentationInformation[]}
- * List of objects containing Representation information
- */
-
- const inheritAttributes = (mpd, options = {}) => {
- const {
- manifestUri = '',
- NOW = Date.now(),
- clientOffset = 0,
- // TODO: For now, we are expecting an eventHandler callback function
- // to be passed into the mpd parser as an option.
- // In the future, we should enable stream parsing by using the Stream class from vhs-utils.
- // This will support new features including a standardized event handler.
- // See the m3u8 parser for examples of how stream parsing is currently used for HLS parsing.
- // https://github.com/videojs/vhs-utils/blob/88d6e10c631e57a5af02c5a62bc7376cd456b4f5/src/stream.js#L9
- eventHandler = function () {}
- } = options;
- const periodNodes = findChildren(mpd, 'Period');
- if (!periodNodes.length) {
- throw new Error(errors.INVALID_NUMBER_OF_PERIOD);
- }
- const locations = findChildren(mpd, 'Location');
- const mpdAttributes = parseAttributes(mpd);
- const mpdBaseUrls = buildBaseUrls([{
- baseUrl: manifestUri
- }], findChildren(mpd, 'BaseURL'));
- const contentSteeringNodes = findChildren(mpd, 'ContentSteering'); // See DASH spec section 5.3.1.2, Semantics of MPD element. Default type to 'static'.
-
- mpdAttributes.type = mpdAttributes.type || 'static';
- mpdAttributes.sourceDuration = mpdAttributes.mediaPresentationDuration || 0;
- mpdAttributes.NOW = NOW;
- mpdAttributes.clientOffset = clientOffset;
- if (locations.length) {
- mpdAttributes.locations = locations.map(getContent);
- }
- const periods = []; // Since toAdaptationSets acts on individual periods right now, the simplest approach to
- // adding properties that require looking at prior periods is to parse attributes and add
- // missing ones before toAdaptationSets is called. If more such properties are added, it
- // may be better to refactor toAdaptationSets.
-
- periodNodes.forEach((node, index) => {
- const attributes = parseAttributes(node); // Use the last modified prior period, as it may contain added information necessary
- // for this period.
-
- const priorPeriod = periods[index - 1];
- attributes.start = getPeriodStart({
- attributes,
- priorPeriodAttributes: priorPeriod ? priorPeriod.attributes : null,
- mpdType: mpdAttributes.type
- });
- periods.push({
- node,
- attributes
- });
- });
- return {
- locations: mpdAttributes.locations,
- contentSteeringInfo: generateContentSteeringInformation(contentSteeringNodes, eventHandler),
- // TODO: There are occurences where this `representationInfo` array contains undesired
- // duplicates. This generally occurs when there are multiple BaseURL nodes that are
- // direct children of the MPD node. When we attempt to resolve URLs from a combination of the
- // parent BaseURL and a child BaseURL, and the value does not resolve,
- // we end up returning the child BaseURL multiple times.
- // We need to determine a way to remove these duplicates in a safe way.
- // See: https://github.com/videojs/mpd-parser/pull/17#discussion_r162750527
- representationInfo: flatten(periods.map(toAdaptationSets(mpdAttributes, mpdBaseUrls))),
- eventStream: flatten(periods.map(toEventStream))
- };
- };
- const stringToMpdXml = manifestString => {
- if (manifestString === '') {
- throw new Error(errors.DASH_EMPTY_MANIFEST);
- }
- const parser = new DOMParser();
- let xml;
- let mpd;
- try {
- xml = parser.parseFromString(manifestString, 'application/xml');
- mpd = xml && xml.documentElement.tagName === 'MPD' ? xml.documentElement : null;
- } catch (e) {// ie 11 throws on invalid xml
- }
- if (!mpd || mpd && mpd.getElementsByTagName('parsererror').length > 0) {
- throw new Error(errors.DASH_INVALID_XML);
- }
- return mpd;
- };
-
- /**
- * Parses the manifest for a UTCTiming node, returning the nodes attributes if found
- *
- * @param {string} mpd
- * XML string of the MPD manifest
- * @return {Object|null}
- * Attributes of UTCTiming node specified in the manifest. Null if none found
- */
-
- const parseUTCTimingScheme = mpd => {
- const UTCTimingNode = findChildren(mpd, 'UTCTiming')[0];
- if (!UTCTimingNode) {
- return null;
- }
- const attributes = parseAttributes(UTCTimingNode);
- switch (attributes.schemeIdUri) {
- case 'urn:mpeg:dash:utc:http-head:2014':
- case 'urn:mpeg:dash:utc:http-head:2012':
- attributes.method = 'HEAD';
- break;
- case 'urn:mpeg:dash:utc:http-xsdate:2014':
- case 'urn:mpeg:dash:utc:http-iso:2014':
- case 'urn:mpeg:dash:utc:http-xsdate:2012':
- case 'urn:mpeg:dash:utc:http-iso:2012':
- attributes.method = 'GET';
- break;
- case 'urn:mpeg:dash:utc:direct:2014':
- case 'urn:mpeg:dash:utc:direct:2012':
- attributes.method = 'DIRECT';
- attributes.value = Date.parse(attributes.value);
- break;
- case 'urn:mpeg:dash:utc:http-ntp:2014':
- case 'urn:mpeg:dash:utc:ntp:2014':
- case 'urn:mpeg:dash:utc:sntp:2014':
- default:
- throw new Error(errors.UNSUPPORTED_UTC_TIMING_SCHEME);
- }
- return attributes;
- };
- /*
- * Given a DASH manifest string and options, parses the DASH manifest into an object in the
- * form outputed by m3u8-parser and accepted by videojs/http-streaming.
- *
- * For live DASH manifests, if `previousManifest` is provided in options, then the newly
- * parsed DASH manifest will have its media sequence and discontinuity sequence values
- * updated to reflect its position relative to the prior manifest.
- *
- * @param {string} manifestString - the DASH manifest as a string
- * @param {options} [options] - any options
- *
- * @return {Object} the manifest object
- */
-
- const parse = (manifestString, options = {}) => {
- const parsedManifestInfo = inheritAttributes(stringToMpdXml(manifestString), options);
- const playlists = toPlaylists(parsedManifestInfo.representationInfo);
- return toM3u8({
- dashPlaylists: playlists,
- locations: parsedManifestInfo.locations,
- contentSteering: parsedManifestInfo.contentSteeringInfo,
- sidxMapping: options.sidxMapping,
- previousManifest: options.previousManifest,
- eventStream: parsedManifestInfo.eventStream
- });
- };
- /**
- * Parses the manifest for a UTCTiming node, returning the nodes attributes if found
- *
- * @param {string} manifestString
- * XML string of the MPD manifest
- * @return {Object|null}
- * Attributes of UTCTiming node specified in the manifest. Null if none found
- */
-
- const parseUTCTiming = manifestString => parseUTCTimingScheme(stringToMpdXml(manifestString));
-
- var MAX_UINT32 = Math.pow(2, 32);
- var getUint64$1 = function (uint8) {
- var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);
- var value;
- if (dv.getBigUint64) {
- value = dv.getBigUint64(0);
- if (value < Number.MAX_SAFE_INTEGER) {
- return Number(value);
- }
- return value;
- }
- return dv.getUint32(0) * MAX_UINT32 + dv.getUint32(4);
- };
- var numbers = {
- getUint64: getUint64$1,
- MAX_UINT32: MAX_UINT32
- };
-
- var getUint64 = numbers.getUint64;
- var parseSidx = function (data) {
- var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
- result = {
- version: data[0],
- flags: new Uint8Array(data.subarray(1, 4)),
- references: [],
- referenceId: view.getUint32(4),
- timescale: view.getUint32(8)
- },
- i = 12;
- if (result.version === 0) {
- result.earliestPresentationTime = view.getUint32(i);
- result.firstOffset = view.getUint32(i + 4);
- i += 8;
- } else {
- // read 64 bits
- result.earliestPresentationTime = getUint64(data.subarray(i));
- result.firstOffset = getUint64(data.subarray(i + 8));
- i += 16;
- }
- i += 2; // reserved
-
- var referenceCount = view.getUint16(i);
- i += 2; // start of references
-
- for (; referenceCount > 0; i += 12, referenceCount--) {
- result.references.push({
- referenceType: (data[i] & 0x80) >>> 7,
- referencedSize: view.getUint32(i) & 0x7FFFFFFF,
- subsegmentDuration: view.getUint32(i + 4),
- startsWithSap: !!(data[i + 8] & 0x80),
- sapType: (data[i + 8] & 0x70) >>> 4,
- sapDeltaTime: view.getUint32(i + 8) & 0x0FFFFFFF
- });
- }
- return result;
- };
- var parseSidx_1 = parseSidx;
-
- var ID3 = toUint8([0x49, 0x44, 0x33]);
- var getId3Size = function getId3Size(bytes, offset) {
- if (offset === void 0) {
- offset = 0;
- }
- bytes = toUint8(bytes);
- var flags = bytes[offset + 5];
- var returnSize = bytes[offset + 6] << 21 | bytes[offset + 7] << 14 | bytes[offset + 8] << 7 | bytes[offset + 9];
- var footerPresent = (flags & 16) >> 4;
- if (footerPresent) {
- return returnSize + 20;
- }
- return returnSize + 10;
- };
- var getId3Offset = function getId3Offset(bytes, offset) {
- if (offset === void 0) {
- offset = 0;
- }
- bytes = toUint8(bytes);
- if (bytes.length - offset < 10 || !bytesMatch(bytes, ID3, {
- offset: offset
- })) {
- return offset;
- }
- offset += getId3Size(bytes, offset); // recursive check for id3 tags as some files
- // have multiple ID3 tag sections even though
- // they should not.
-
- return getId3Offset(bytes, offset);
- };
-
- var normalizePath$1 = function normalizePath(path) {
- if (typeof path === 'string') {
- return stringToBytes(path);
- }
- if (typeof path === 'number') {
- return path;
- }
- return path;
- };
- var normalizePaths$1 = function normalizePaths(paths) {
- if (!Array.isArray(paths)) {
- return [normalizePath$1(paths)];
- }
- return paths.map(function (p) {
- return normalizePath$1(p);
- });
- };
- /**
- * find any number of boxes by name given a path to it in an iso bmff
- * such as mp4.
- *
- * @param {TypedArray} bytes
- * bytes for the iso bmff to search for boxes in
- *
- * @param {Uint8Array[]|string[]|string|Uint8Array} name
- * An array of paths or a single path representing the name
- * of boxes to search through in bytes. Paths may be
- * uint8 (character codes) or strings.
- *
- * @param {boolean} [complete=false]
- * Should we search only for complete boxes on the final path.
- * This is very useful when you do not want to get back partial boxes
- * in the case of streaming files.
- *
- * @return {Uint8Array[]}
- * An array of the end paths that we found.
- */
-
- var findBox = function findBox(bytes, paths, complete) {
- if (complete === void 0) {
- complete = false;
- }
- paths = normalizePaths$1(paths);
- bytes = toUint8(bytes);
- var results = [];
- if (!paths.length) {
- // short-circuit the search for empty paths
- return results;
- }
- var i = 0;
- while (i < bytes.length) {
- var size = (bytes[i] << 24 | bytes[i + 1] << 16 | bytes[i + 2] << 8 | bytes[i + 3]) >>> 0;
- var type = bytes.subarray(i + 4, i + 8); // invalid box format.
-
- if (size === 0) {
- break;
- }
- var end = i + size;
- if (end > bytes.length) {
- // this box is bigger than the number of bytes we have
- // and complete is set, we cannot find any more boxes.
- if (complete) {
- break;
- }
- end = bytes.length;
- }
- var data = bytes.subarray(i + 8, end);
- if (bytesMatch(type, paths[0])) {
- if (paths.length === 1) {
- // this is the end of the path and we've found the box we were
- // looking for
- results.push(data);
- } else {
- // recursively search for the next box along the path
- results.push.apply(results, findBox(data, paths.slice(1), complete));
- }
- }
- i = end;
- } // we've finished searching all of bytes
-
- return results;
- };
-
- // https://matroska-org.github.io/libebml/specs.html
- // https://www.matroska.org/technical/elements.html
- // https://www.webmproject.org/docs/container/
-
- var EBML_TAGS = {
- EBML: toUint8([0x1A, 0x45, 0xDF, 0xA3]),
- DocType: toUint8([0x42, 0x82]),
- Segment: toUint8([0x18, 0x53, 0x80, 0x67]),
- SegmentInfo: toUint8([0x15, 0x49, 0xA9, 0x66]),
- Tracks: toUint8([0x16, 0x54, 0xAE, 0x6B]),
- Track: toUint8([0xAE]),
- TrackNumber: toUint8([0xd7]),
- DefaultDuration: toUint8([0x23, 0xe3, 0x83]),
- TrackEntry: toUint8([0xAE]),
- TrackType: toUint8([0x83]),
- FlagDefault: toUint8([0x88]),
- CodecID: toUint8([0x86]),
- CodecPrivate: toUint8([0x63, 0xA2]),
- VideoTrack: toUint8([0xe0]),
- AudioTrack: toUint8([0xe1]),
- // Not used yet, but will be used for live webm/mkv
- // see https://www.matroska.org/technical/basics.html#block-structure
- // see https://www.matroska.org/technical/basics.html#simpleblock-structure
- Cluster: toUint8([0x1F, 0x43, 0xB6, 0x75]),
- Timestamp: toUint8([0xE7]),
- TimestampScale: toUint8([0x2A, 0xD7, 0xB1]),
- BlockGroup: toUint8([0xA0]),
- BlockDuration: toUint8([0x9B]),
- Block: toUint8([0xA1]),
- SimpleBlock: toUint8([0xA3])
- };
- /**
- * This is a simple table to determine the length
- * of things in ebml. The length is one based (starts at 1,
- * rather than zero) and for every zero bit before a one bit
- * we add one to length. We also need this table because in some
- * case we have to xor all the length bits from another value.
- */
-
- var LENGTH_TABLE = [128, 64, 32, 16, 8, 4, 2, 1];
- var getLength = function getLength(byte) {
- var len = 1;
- for (var i = 0; i < LENGTH_TABLE.length; i++) {
- if (byte & LENGTH_TABLE[i]) {
- break;
- }
- len++;
- }
- return len;
- }; // length in ebml is stored in the first 4 to 8 bits
- // of the first byte. 4 for the id length and 8 for the
- // data size length. Length is measured by converting the number to binary
- // then 1 + the number of zeros before a 1 is encountered starting
- // from the left.
-
- var getvint = function getvint(bytes, offset, removeLength, signed) {
- if (removeLength === void 0) {
- removeLength = true;
- }
- if (signed === void 0) {
- signed = false;
- }
- var length = getLength(bytes[offset]);
- var valueBytes = bytes.subarray(offset, offset + length); // NOTE that we do **not** subarray here because we need to copy these bytes
- // as they will be modified below to remove the dataSizeLen bits and we do not
- // want to modify the original data. normally we could just call slice on
- // uint8array but ie 11 does not support that...
-
- if (removeLength) {
- valueBytes = Array.prototype.slice.call(bytes, offset, offset + length);
- valueBytes[0] ^= LENGTH_TABLE[length - 1];
- }
- return {
- length: length,
- value: bytesToNumber(valueBytes, {
- signed: signed
- }),
- bytes: valueBytes
- };
- };
- var normalizePath = function normalizePath(path) {
- if (typeof path === 'string') {
- return path.match(/.{1,2}/g).map(function (p) {
- return normalizePath(p);
- });
- }
- if (typeof path === 'number') {
- return numberToBytes(path);
- }
- return path;
- };
- var normalizePaths = function normalizePaths(paths) {
- if (!Array.isArray(paths)) {
- return [normalizePath(paths)];
- }
- return paths.map(function (p) {
- return normalizePath(p);
- });
- };
- var getInfinityDataSize = function getInfinityDataSize(id, bytes, offset) {
- if (offset >= bytes.length) {
- return bytes.length;
- }
- var innerid = getvint(bytes, offset, false);
- if (bytesMatch(id.bytes, innerid.bytes)) {
- return offset;
- }
- var dataHeader = getvint(bytes, offset + innerid.length);
- return getInfinityDataSize(id, bytes, offset + dataHeader.length + dataHeader.value + innerid.length);
- };
- /**
- * Notes on the EBLM format.
- *
- * EBLM uses "vints" tags. Every vint tag contains
- * two parts
- *
- * 1. The length from the first byte. You get this by
- * converting the byte to binary and counting the zeros
- * before a 1. Then you add 1 to that. Examples
- * 00011111 = length 4 because there are 3 zeros before a 1.
- * 00100000 = length 3 because there are 2 zeros before a 1.
- * 00000011 = length 7 because there are 6 zeros before a 1.
- *
- * 2. The bits used for length are removed from the first byte
- * Then all the bytes are merged into a value. NOTE: this
- * is not the case for id ebml tags as there id includes
- * length bits.
- *
- */
-
- var findEbml = function findEbml(bytes, paths) {
- paths = normalizePaths(paths);
- bytes = toUint8(bytes);
- var results = [];
- if (!paths.length) {
- return results;
- }
- var i = 0;
- while (i < bytes.length) {
- var id = getvint(bytes, i, false);
- var dataHeader = getvint(bytes, i + id.length);
- var dataStart = i + id.length + dataHeader.length; // dataSize is unknown or this is a live stream
-
- if (dataHeader.value === 0x7f) {
- dataHeader.value = getInfinityDataSize(id, bytes, dataStart);
- if (dataHeader.value !== bytes.length) {
- dataHeader.value -= dataStart;
- }
- }
- var dataEnd = dataStart + dataHeader.value > bytes.length ? bytes.length : dataStart + dataHeader.value;
- var data = bytes.subarray(dataStart, dataEnd);
- if (bytesMatch(paths[0], id.bytes)) {
- if (paths.length === 1) {
- // this is the end of the paths and we've found the tag we were
- // looking for
- results.push(data);
- } else {
- // recursively search for the next tag inside of the data
- // of this one
- results = results.concat(findEbml(data, paths.slice(1)));
- }
- }
- var totalLength = id.length + dataHeader.length + data.length; // move past this tag entirely, we are not looking for it
-
- i += totalLength;
- }
- return results;
- }; // see https://www.matroska.org/technical/basics.html#block-structure
-
- var NAL_TYPE_ONE = toUint8([0x00, 0x00, 0x00, 0x01]);
- var NAL_TYPE_TWO = toUint8([0x00, 0x00, 0x01]);
- var EMULATION_PREVENTION = toUint8([0x00, 0x00, 0x03]);
- /**
- * Expunge any "Emulation Prevention" bytes from a "Raw Byte
- * Sequence Payload"
- *
- * @param data {Uint8Array} the bytes of a RBSP from a NAL
- * unit
- * @return {Uint8Array} the RBSP without any Emulation
- * Prevention Bytes
- */
-
- var discardEmulationPreventionBytes = function discardEmulationPreventionBytes(bytes) {
- var positions = [];
- var i = 1; // Find all `Emulation Prevention Bytes`
-
- while (i < bytes.length - 2) {
- if (bytesMatch(bytes.subarray(i, i + 3), EMULATION_PREVENTION)) {
- positions.push(i + 2);
- i++;
- }
- i++;
- } // If no Emulation Prevention Bytes were found just return the original
- // array
-
- if (positions.length === 0) {
- return bytes;
- } // Create a new array to hold the NAL unit data
-
- var newLength = bytes.length - positions.length;
- var newData = new Uint8Array(newLength);
- var sourceIndex = 0;
- for (i = 0; i < newLength; sourceIndex++, i++) {
- if (sourceIndex === positions[0]) {
- // Skip this byte
- sourceIndex++; // Remove this position index
-
- positions.shift();
- }
- newData[i] = bytes[sourceIndex];
- }
- return newData;
- };
- var findNal = function findNal(bytes, dataType, types, nalLimit) {
- if (nalLimit === void 0) {
- nalLimit = Infinity;
- }
- bytes = toUint8(bytes);
- types = [].concat(types);
- var i = 0;
- var nalStart;
- var nalsFound = 0; // keep searching until:
- // we reach the end of bytes
- // we reach the maximum number of nals they want to seach
- // NOTE: that we disregard nalLimit when we have found the start
- // of the nal we want so that we can find the end of the nal we want.
-
- while (i < bytes.length && (nalsFound < nalLimit || nalStart)) {
- var nalOffset = void 0;
- if (bytesMatch(bytes.subarray(i), NAL_TYPE_ONE)) {
- nalOffset = 4;
- } else if (bytesMatch(bytes.subarray(i), NAL_TYPE_TWO)) {
- nalOffset = 3;
- } // we are unsynced,
- // find the next nal unit
-
- if (!nalOffset) {
- i++;
- continue;
- }
- nalsFound++;
- if (nalStart) {
- return discardEmulationPreventionBytes(bytes.subarray(nalStart, i));
- }
- var nalType = void 0;
- if (dataType === 'h264') {
- nalType = bytes[i + nalOffset] & 0x1f;
- } else if (dataType === 'h265') {
- nalType = bytes[i + nalOffset] >> 1 & 0x3f;
- }
- if (types.indexOf(nalType) !== -1) {
- nalStart = i + nalOffset;
- } // nal header is 1 length for h264, and 2 for h265
-
- i += nalOffset + (dataType === 'h264' ? 1 : 2);
- }
- return bytes.subarray(0, 0);
- };
- var findH264Nal = function findH264Nal(bytes, type, nalLimit) {
- return findNal(bytes, 'h264', type, nalLimit);
- };
- var findH265Nal = function findH265Nal(bytes, type, nalLimit) {
- return findNal(bytes, 'h265', type, nalLimit);
- };
-
- var CONSTANTS = {
- // "webm" string literal in hex
- 'webm': toUint8([0x77, 0x65, 0x62, 0x6d]),
- // "matroska" string literal in hex
- 'matroska': toUint8([0x6d, 0x61, 0x74, 0x72, 0x6f, 0x73, 0x6b, 0x61]),
- // "fLaC" string literal in hex
- 'flac': toUint8([0x66, 0x4c, 0x61, 0x43]),
- // "OggS" string literal in hex
- 'ogg': toUint8([0x4f, 0x67, 0x67, 0x53]),
- // ac-3 sync byte, also works for ec-3 as that is simply a codec
- // of ac-3
- 'ac3': toUint8([0x0b, 0x77]),
- // "RIFF" string literal in hex used for wav and avi
- 'riff': toUint8([0x52, 0x49, 0x46, 0x46]),
- // "AVI" string literal in hex
- 'avi': toUint8([0x41, 0x56, 0x49]),
- // "WAVE" string literal in hex
- 'wav': toUint8([0x57, 0x41, 0x56, 0x45]),
- // "ftyp3g" string literal in hex
- '3gp': toUint8([0x66, 0x74, 0x79, 0x70, 0x33, 0x67]),
- // "ftyp" string literal in hex
- 'mp4': toUint8([0x66, 0x74, 0x79, 0x70]),
- // "styp" string literal in hex
- 'fmp4': toUint8([0x73, 0x74, 0x79, 0x70]),
- // "ftypqt" string literal in hex
- 'mov': toUint8([0x66, 0x74, 0x79, 0x70, 0x71, 0x74]),
- // moov string literal in hex
- 'moov': toUint8([0x6D, 0x6F, 0x6F, 0x76]),
- // moof string literal in hex
- 'moof': toUint8([0x6D, 0x6F, 0x6F, 0x66])
- };
- var _isLikely = {
- aac: function aac(bytes) {
- var offset = getId3Offset(bytes);
- return bytesMatch(bytes, [0xFF, 0x10], {
- offset: offset,
- mask: [0xFF, 0x16]
- });
- },
- mp3: function mp3(bytes) {
- var offset = getId3Offset(bytes);
- return bytesMatch(bytes, [0xFF, 0x02], {
- offset: offset,
- mask: [0xFF, 0x06]
- });
- },
- webm: function webm(bytes) {
- var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is webm
-
- return bytesMatch(docType, CONSTANTS.webm);
- },
- mkv: function mkv(bytes) {
- var docType = findEbml(bytes, [EBML_TAGS.EBML, EBML_TAGS.DocType])[0]; // check if DocType EBML tag is matroska
-
- return bytesMatch(docType, CONSTANTS.matroska);
- },
- mp4: function mp4(bytes) {
- // if this file is another base media file format, it is not mp4
- if (_isLikely['3gp'](bytes) || _isLikely.mov(bytes)) {
- return false;
- } // if this file starts with a ftyp or styp box its mp4
-
- if (bytesMatch(bytes, CONSTANTS.mp4, {
- offset: 4
- }) || bytesMatch(bytes, CONSTANTS.fmp4, {
- offset: 4
- })) {
- return true;
- } // if this file starts with a moof/moov box its mp4
-
- if (bytesMatch(bytes, CONSTANTS.moof, {
- offset: 4
- }) || bytesMatch(bytes, CONSTANTS.moov, {
- offset: 4
- })) {
- return true;
- }
- },
- mov: function mov(bytes) {
- return bytesMatch(bytes, CONSTANTS.mov, {
- offset: 4
- });
- },
- '3gp': function gp(bytes) {
- return bytesMatch(bytes, CONSTANTS['3gp'], {
- offset: 4
- });
- },
- ac3: function ac3(bytes) {
- var offset = getId3Offset(bytes);
- return bytesMatch(bytes, CONSTANTS.ac3, {
- offset: offset
- });
- },
- ts: function ts(bytes) {
- if (bytes.length < 189 && bytes.length >= 1) {
- return bytes[0] === 0x47;
- }
- var i = 0; // check the first 376 bytes for two matching sync bytes
-
- while (i + 188 < bytes.length && i < 188) {
- if (bytes[i] === 0x47 && bytes[i + 188] === 0x47) {
- return true;
- }
- i += 1;
- }
- return false;
- },
- flac: function flac(bytes) {
- var offset = getId3Offset(bytes);
- return bytesMatch(bytes, CONSTANTS.flac, {
- offset: offset
- });
- },
- ogg: function ogg(bytes) {
- return bytesMatch(bytes, CONSTANTS.ogg);
- },
- avi: function avi(bytes) {
- return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.avi, {
- offset: 8
- });
- },
- wav: function wav(bytes) {
- return bytesMatch(bytes, CONSTANTS.riff) && bytesMatch(bytes, CONSTANTS.wav, {
- offset: 8
- });
- },
- 'h264': function h264(bytes) {
- // find seq_parameter_set_rbsp
- return findH264Nal(bytes, 7, 3).length;
- },
- 'h265': function h265(bytes) {
- // find video_parameter_set_rbsp or seq_parameter_set_rbsp
- return findH265Nal(bytes, [32, 33], 3).length;
- }
- }; // get all the isLikely functions
- // but make sure 'ts' is above h264 and h265
- // but below everything else as it is the least specific
-
- var isLikelyTypes = Object.keys(_isLikely) // remove ts, h264, h265
- .filter(function (t) {
- return t !== 'ts' && t !== 'h264' && t !== 'h265';
- }) // add it back to the bottom
- .concat(['ts', 'h264', 'h265']); // make sure we are dealing with uint8 data.
-
- isLikelyTypes.forEach(function (type) {
- var isLikelyFn = _isLikely[type];
- _isLikely[type] = function (bytes) {
- return isLikelyFn(toUint8(bytes));
- };
- }); // export after wrapping
-
- var isLikely = _isLikely; // A useful list of file signatures can be found here
- // https://en.wikipedia.org/wiki/List_of_file_signatures
-
- var detectContainerForBytes = function detectContainerForBytes(bytes) {
- bytes = toUint8(bytes);
- for (var i = 0; i < isLikelyTypes.length; i++) {
- var type = isLikelyTypes[i];
- if (isLikely[type](bytes)) {
- return type;
- }
- }
- return '';
- }; // fmp4 is not a container
-
- var isLikelyFmp4MediaSegment = function isLikelyFmp4MediaSegment(bytes) {
- return findBox(bytes, ['moof']).length > 0;
- };
-
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
- var ONE_SECOND_IN_TS = 90000,
- // 90kHz clock
- secondsToVideoTs,
- secondsToAudioTs,
- videoTsToSeconds,
- audioTsToSeconds,
- audioTsToVideoTs,
- videoTsToAudioTs,
- metadataTsToSeconds;
- secondsToVideoTs = function (seconds) {
- return seconds * ONE_SECOND_IN_TS;
- };
- secondsToAudioTs = function (seconds, sampleRate) {
- return seconds * sampleRate;
- };
- videoTsToSeconds = function (timestamp) {
- return timestamp / ONE_SECOND_IN_TS;
- };
- audioTsToSeconds = function (timestamp, sampleRate) {
- return timestamp / sampleRate;
- };
- audioTsToVideoTs = function (timestamp, sampleRate) {
- return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
- };
- videoTsToAudioTs = function (timestamp, sampleRate) {
- return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
- };
-
- /**
- * Adjust ID3 tag or caption timing information by the timeline pts values
- * (if keepOriginalTimestamps is false) and convert to seconds
- */
- metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {
- return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);
- };
- var clock = {
- ONE_SECOND_IN_TS: ONE_SECOND_IN_TS,
- secondsToVideoTs: secondsToVideoTs,
- secondsToAudioTs: secondsToAudioTs,
- videoTsToSeconds: videoTsToSeconds,
- audioTsToSeconds: audioTsToSeconds,
- audioTsToVideoTs: audioTsToVideoTs,
- videoTsToAudioTs: videoTsToAudioTs,
- metadataTsToSeconds: metadataTsToSeconds
- };
- var clock_1 = clock.ONE_SECOND_IN_TS;
-
- /*! @name @videojs/http-streaming @version 3.12.1 @license Apache-2.0 */
-
- /**
- * @file resolve-url.js - Handling how URLs are resolved and manipulated
- */
- const resolveUrl = resolveUrl$1;
- /**
- * If the xhr request was redirected, return the responseURL, otherwise,
- * return the original url.
- *
- * @api private
- *
- * @param {string} url - an url being requested
- * @param {XMLHttpRequest} req - xhr request result
- *
- * @return {string}
- */
-
- const resolveManifestRedirect = (url, req) => {
- // To understand how the responseURL below is set and generated:
- // - https://fetch.spec.whatwg.org/#concept-response-url
- // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling
- if (req && req.responseURL && url !== req.responseURL) {
- return req.responseURL;
- }
- return url;
- };
- const logger = source => {
- if (videojs.log.debug) {
- return videojs.log.debug.bind(videojs, 'VHS:', `${source} >`);
- }
- return function () {};
- };
-
- /**
- * Provides a compatibility layer between Video.js 7 and 8 API changes for VHS.
- */
- /**
- * Delegates to videojs.obj.merge (Video.js 8) or
- * videojs.mergeOptions (Video.js 7).
- */
-
- function merge(...args) {
- const context = videojs.obj || videojs;
- const fn = context.merge || context.mergeOptions;
- return fn.apply(context, args);
- }
- /**
- * Delegates to videojs.time.createTimeRanges (Video.js 8) or
- * videojs.createTimeRanges (Video.js 7).
- */
-
- function createTimeRanges(...args) {
- const context = videojs.time || videojs;
- const fn = context.createTimeRanges || context.createTimeRanges;
- return fn.apply(context, args);
- }
- /**
- * Converts provided buffered ranges to a descriptive string
- *
- * @param {TimeRanges} buffered - received buffered time ranges
- *
- * @return {string} - descriptive string
- */
-
- function bufferedRangesToString(buffered) {
- if (buffered.length === 0) {
- return 'Buffered Ranges are empty';
- }
- let bufferedRangesStr = 'Buffered Ranges: \n';
- for (let i = 0; i < buffered.length; i++) {
- const start = buffered.start(i);
- const end = buffered.end(i);
- bufferedRangesStr += `${start} --> ${end}. Duration (${end - start})\n`;
- }
- return bufferedRangesStr;
- }
-
- /**
- * ranges
- *
- * Utilities for working with TimeRanges.
- *
- */
-
- const TIME_FUDGE_FACTOR = 1 / 30; // Comparisons between time values such as current time and the end of the buffered range
- // can be misleading because of precision differences or when the current media has poorly
- // aligned audio and video, which can cause values to be slightly off from what you would
- // expect. This value is what we consider to be safe to use in such comparisons to account
- // for these scenarios.
-
- const SAFE_TIME_DELTA = TIME_FUDGE_FACTOR * 3;
- const filterRanges = function (timeRanges, predicate) {
- const results = [];
- let i;
- if (timeRanges && timeRanges.length) {
- // Search for ranges that match the predicate
- for (i = 0; i < timeRanges.length; i++) {
- if (predicate(timeRanges.start(i), timeRanges.end(i))) {
- results.push([timeRanges.start(i), timeRanges.end(i)]);
- }
- }
- }
- return createTimeRanges(results);
- };
- /**
- * Attempts to find the buffered TimeRange that contains the specified
- * time.
- *
- * @param {TimeRanges} buffered - the TimeRanges object to query
- * @param {number} time - the time to filter on.
- * @return {TimeRanges} a new TimeRanges object
- */
-
- const findRange = function (buffered, time) {
- return filterRanges(buffered, function (start, end) {
- return start - SAFE_TIME_DELTA <= time && end + SAFE_TIME_DELTA >= time;
- });
- };
- /**
- * Returns the TimeRanges that begin later than the specified time.
- *
- * @param {TimeRanges} timeRanges - the TimeRanges object to query
- * @param {number} time - the time to filter on.
- * @return {TimeRanges} a new TimeRanges object.
- */
-
- const findNextRange = function (timeRanges, time) {
- return filterRanges(timeRanges, function (start) {
- return start - TIME_FUDGE_FACTOR >= time;
- });
- };
- /**
- * Returns gaps within a list of TimeRanges
- *
- * @param {TimeRanges} buffered - the TimeRanges object
- * @return {TimeRanges} a TimeRanges object of gaps
- */
-
- const findGaps = function (buffered) {
- if (buffered.length < 2) {
- return createTimeRanges();
- }
- const ranges = [];
- for (let i = 1; i < buffered.length; i++) {
- const start = buffered.end(i - 1);
- const end = buffered.start(i);
- ranges.push([start, end]);
- }
- return createTimeRanges(ranges);
- };
- /**
- * Calculate the intersection of two TimeRanges
- *
- * @param {TimeRanges} bufferA
- * @param {TimeRanges} bufferB
- * @return {TimeRanges} The interesection of `bufferA` with `bufferB`
- */
-
- const bufferIntersection = function (bufferA, bufferB) {
- let start = null;
- let end = null;
- let arity = 0;
- const extents = [];
- const ranges = [];
- if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {
- return createTimeRanges();
- } // Handle the case where we have both buffers and create an
- // intersection of the two
-
- let count = bufferA.length; // A) Gather up all start and end times
-
- while (count--) {
- extents.push({
- time: bufferA.start(count),
- type: 'start'
- });
- extents.push({
- time: bufferA.end(count),
- type: 'end'
- });
- }
- count = bufferB.length;
- while (count--) {
- extents.push({
- time: bufferB.start(count),
- type: 'start'
- });
- extents.push({
- time: bufferB.end(count),
- type: 'end'
- });
- } // B) Sort them by time
-
- extents.sort(function (a, b) {
- return a.time - b.time;
- }); // C) Go along one by one incrementing arity for start and decrementing
- // arity for ends
-
- for (count = 0; count < extents.length; count++) {
- if (extents[count].type === 'start') {
- arity++; // D) If arity is ever incremented to 2 we are entering an
- // overlapping range
-
- if (arity === 2) {
- start = extents[count].time;
- }
- } else if (extents[count].type === 'end') {
- arity--; // E) If arity is ever decremented to 1 we leaving an
- // overlapping range
-
- if (arity === 1) {
- end = extents[count].time;
- }
- } // F) Record overlapping ranges
-
- if (start !== null && end !== null) {
- ranges.push([start, end]);
- start = null;
- end = null;
- }
- }
- return createTimeRanges(ranges);
- };
- /**
- * Gets a human readable string for a TimeRange
- *
- * @param {TimeRange} range
- * @return {string} a human readable string
- */
-
- const printableRange = range => {
- const strArr = [];
- if (!range || !range.length) {
- return '';
- }
- for (let i = 0; i < range.length; i++) {
- strArr.push(range.start(i) + ' => ' + range.end(i));
- }
- return strArr.join(', ');
- };
- /**
- * Calculates the amount of time left in seconds until the player hits the end of the
- * buffer and causes a rebuffer
- *
- * @param {TimeRange} buffered
- * The state of the buffer
- * @param {Numnber} currentTime
- * The current time of the player
- * @param {number} playbackRate
- * The current playback rate of the player. Defaults to 1.
- * @return {number}
- * Time until the player has to start rebuffering in seconds.
- * @function timeUntilRebuffer
- */
-
- const timeUntilRebuffer = function (buffered, currentTime, playbackRate = 1) {
- const bufferedEnd = buffered.length ? buffered.end(buffered.length - 1) : 0;
- return (bufferedEnd - currentTime) / playbackRate;
- };
- /**
- * Converts a TimeRanges object into an array representation
- *
- * @param {TimeRanges} timeRanges
- * @return {Array}
- */
-
- const timeRangesToArray = timeRanges => {
- const timeRangesList = [];
- for (let i = 0; i < timeRanges.length; i++) {
- timeRangesList.push({
- start: timeRanges.start(i),
- end: timeRanges.end(i)
- });
- }
- return timeRangesList;
- };
- /**
- * Determines if two time range objects are different.
- *
- * @param {TimeRange} a
- * the first time range object to check
- *
- * @param {TimeRange} b
- * the second time range object to check
- *
- * @return {Boolean}
- * Whether the time range objects differ
- */
-
- const isRangeDifferent = function (a, b) {
- // same object
- if (a === b) {
- return false;
- } // one or the other is undefined
-
- if (!a && b || !b && a) {
- return true;
- } // length is different
-
- if (a.length !== b.length) {
- return true;
- } // see if any start/end pair is different
-
- for (let i = 0; i < a.length; i++) {
- if (a.start(i) !== b.start(i) || a.end(i) !== b.end(i)) {
- return true;
- }
- } // if the length and every pair is the same
- // this is the same time range
-
- return false;
- };
- const lastBufferedEnd = function (a) {
- if (!a || !a.length || !a.end) {
- return;
- }
- return a.end(a.length - 1);
- };
- /**
- * A utility function to add up the amount of time in a timeRange
- * after a specified startTime.
- * ie:[[0, 10], [20, 40], [50, 60]] with a startTime 0
- * would return 40 as there are 40s seconds after 0 in the timeRange
- *
- * @param {TimeRange} range
- * The range to check against
- * @param {number} startTime
- * The time in the time range that you should start counting from
- *
- * @return {number}
- * The number of seconds in the buffer passed the specified time.
- */
-
- const timeAheadOf = function (range, startTime) {
- let time = 0;
- if (!range || !range.length) {
- return time;
- }
- for (let i = 0; i < range.length; i++) {
- const start = range.start(i);
- const end = range.end(i); // startTime is after this range entirely
-
- if (startTime > end) {
- continue;
- } // startTime is within this range
-
- if (startTime > start && startTime <= end) {
- time += end - startTime;
- continue;
- } // startTime is before this range.
-
- time += end - start;
- }
- return time;
- };
-
- /**
- * @file playlist.js
- *
- * Playlist related utilities.
- */
- /**
- * Get the duration of a segment, with special cases for
- * llhls segments that do not have a duration yet.
- *
- * @param {Object} playlist
- * the playlist that the segment belongs to.
- * @param {Object} segment
- * the segment to get a duration for.
- *
- * @return {number}
- * the segment duration
- */
-
- const segmentDurationWithParts = (playlist, segment) => {
- // if this isn't a preload segment
- // then we will have a segment duration that is accurate.
- if (!segment.preload) {
- return segment.duration;
- } // otherwise we have to add up parts and preload hints
- // to get an up to date duration.
-
- let result = 0;
- (segment.parts || []).forEach(function (p) {
- result += p.duration;
- }); // for preload hints we have to use partTargetDuration
- // as they won't even have a duration yet.
-
- (segment.preloadHints || []).forEach(function (p) {
- if (p.type === 'PART') {
- result += playlist.partTargetDuration;
- }
- });
- return result;
- };
- /**
- * A function to get a combined list of parts and segments with durations
- * and indexes.
- *
- * @param {Playlist} playlist the playlist to get the list for.
- *
- * @return {Array} The part/segment list.
- */
-
- const getPartsAndSegments = playlist => (playlist.segments || []).reduce((acc, segment, si) => {
- if (segment.parts) {
- segment.parts.forEach(function (part, pi) {
- acc.push({
- duration: part.duration,
- segmentIndex: si,
- partIndex: pi,
- part,
- segment
- });
- });
- } else {
- acc.push({
- duration: segment.duration,
- segmentIndex: si,
- partIndex: null,
- segment,
- part: null
- });
- }
- return acc;
- }, []);
- const getLastParts = media => {
- const lastSegment = media.segments && media.segments.length && media.segments[media.segments.length - 1];
- return lastSegment && lastSegment.parts || [];
- };
- const getKnownPartCount = ({
- preloadSegment
- }) => {
- if (!preloadSegment) {
- return;
- }
- const {
- parts,
- preloadHints
- } = preloadSegment;
- let partCount = (preloadHints || []).reduce((count, hint) => count + (hint.type === 'PART' ? 1 : 0), 0);
- partCount += parts && parts.length ? parts.length : 0;
- return partCount;
- };
- /**
- * Get the number of seconds to delay from the end of a
- * live playlist.
- *
- * @param {Playlist} main the main playlist
- * @param {Playlist} media the media playlist
- * @return {number} the hold back in seconds.
- */
-
- const liveEdgeDelay = (main, media) => {
- if (media.endList) {
- return 0;
- } // dash suggestedPresentationDelay trumps everything
-
- if (main && main.suggestedPresentationDelay) {
- return main.suggestedPresentationDelay;
- }
- const hasParts = getLastParts(media).length > 0; // look for "part" delays from ll-hls first
-
- if (hasParts && media.serverControl && media.serverControl.partHoldBack) {
- return media.serverControl.partHoldBack;
- } else if (hasParts && media.partTargetDuration) {
- return media.partTargetDuration * 3; // finally look for full segment delays
- } else if (media.serverControl && media.serverControl.holdBack) {
- return media.serverControl.holdBack;
- } else if (media.targetDuration) {
- return media.targetDuration * 3;
- }
- return 0;
- };
- /**
- * walk backward until we find a duration we can use
- * or return a failure
- *
- * @param {Playlist} playlist the playlist to walk through
- * @param {Number} endSequence the mediaSequence to stop walking on
- */
-
- const backwardDuration = function (playlist, endSequence) {
- let result = 0;
- let i = endSequence - playlist.mediaSequence; // if a start time is available for segment immediately following
- // the interval, use it
-
- let segment = playlist.segments[i]; // Walk backward until we find the latest segment with timeline
- // information that is earlier than endSequence
-
- if (segment) {
- if (typeof segment.start !== 'undefined') {
- return {
- result: segment.start,
- precise: true
- };
- }
- if (typeof segment.end !== 'undefined') {
- return {
- result: segment.end - segment.duration,
- precise: true
- };
- }
- }
- while (i--) {
- segment = playlist.segments[i];
- if (typeof segment.end !== 'undefined') {
- return {
- result: result + segment.end,
- precise: true
- };
- }
- result += segmentDurationWithParts(playlist, segment);
- if (typeof segment.start !== 'undefined') {
- return {
- result: result + segment.start,
- precise: true
- };
- }
- }
- return {
- result,
- precise: false
- };
- };
- /**
- * walk forward until we find a duration we can use
- * or return a failure
- *
- * @param {Playlist} playlist the playlist to walk through
- * @param {number} endSequence the mediaSequence to stop walking on
- */
-
- const forwardDuration = function (playlist, endSequence) {
- let result = 0;
- let segment;
- let i = endSequence - playlist.mediaSequence; // Walk forward until we find the earliest segment with timeline
- // information
-
- for (; i < playlist.segments.length; i++) {
- segment = playlist.segments[i];
- if (typeof segment.start !== 'undefined') {
- return {
- result: segment.start - result,
- precise: true
- };
- }
- result += segmentDurationWithParts(playlist, segment);
- if (typeof segment.end !== 'undefined') {
- return {
- result: segment.end - result,
- precise: true
- };
- }
- } // indicate we didn't find a useful duration estimate
-
- return {
- result: -1,
- precise: false
- };
- };
- /**
- * Calculate the media duration from the segments associated with a
- * playlist. The duration of a subinterval of the available segments
- * may be calculated by specifying an end index.
- *
- * @param {Object} playlist a media playlist object
- * @param {number=} endSequence an exclusive upper boundary
- * for the playlist. Defaults to playlist length.
- * @param {number} expired the amount of time that has dropped
- * off the front of the playlist in a live scenario
- * @return {number} the duration between the first available segment
- * and end index.
- */
-
- const intervalDuration = function (playlist, endSequence, expired) {
- if (typeof endSequence === 'undefined') {
- endSequence = playlist.mediaSequence + playlist.segments.length;
- }
- if (endSequence < playlist.mediaSequence) {
- return 0;
- } // do a backward walk to estimate the duration
-
- const backward = backwardDuration(playlist, endSequence);
- if (backward.precise) {
- // if we were able to base our duration estimate on timing
- // information provided directly from the Media Source, return
- // it
- return backward.result;
- } // walk forward to see if a precise duration estimate can be made
- // that way
-
- const forward = forwardDuration(playlist, endSequence);
- if (forward.precise) {
- // we found a segment that has been buffered and so it's
- // position is known precisely
- return forward.result;
- } // return the less-precise, playlist-based duration estimate
-
- return backward.result + expired;
- };
- /**
- * Calculates the duration of a playlist. If a start and end index
- * are specified, the duration will be for the subset of the media
- * timeline between those two indices. The total duration for live
- * playlists is always Infinity.
- *
- * @param {Object} playlist a media playlist object
- * @param {number=} endSequence an exclusive upper
- * boundary for the playlist. Defaults to the playlist media
- * sequence number plus its length.
- * @param {number=} expired the amount of time that has
- * dropped off the front of the playlist in a live scenario
- * @return {number} the duration between the start index and end
- * index.
- */
-
- const duration = function (playlist, endSequence, expired) {
- if (!playlist) {
- return 0;
- }
- if (typeof expired !== 'number') {
- expired = 0;
- } // if a slice of the total duration is not requested, use
- // playlist-level duration indicators when they're present
-
- if (typeof endSequence === 'undefined') {
- // if present, use the duration specified in the playlist
- if (playlist.totalDuration) {
- return playlist.totalDuration;
- } // duration should be Infinity for live playlists
-
- if (!playlist.endList) {
- return window.Infinity;
- }
- } // calculate the total duration based on the segment durations
-
- return intervalDuration(playlist, endSequence, expired);
- };
- /**
- * Calculate the time between two indexes in the current playlist
- * neight the start- nor the end-index need to be within the current
- * playlist in which case, the targetDuration of the playlist is used
- * to approximate the durations of the segments
- *
- * @param {Array} options.durationList list to iterate over for durations.
- * @param {number} options.defaultDuration duration to use for elements before or after the durationList
- * @param {number} options.startIndex partsAndSegments index to start
- * @param {number} options.endIndex partsAndSegments index to end.
- * @return {number} the number of seconds between startIndex and endIndex
- */
-
- const sumDurations = function ({
- defaultDuration,
- durationList,
- startIndex,
- endIndex
- }) {
- let durations = 0;
- if (startIndex > endIndex) {
- [startIndex, endIndex] = [endIndex, startIndex];
- }
- if (startIndex < 0) {
- for (let i = startIndex; i < Math.min(0, endIndex); i++) {
- durations += defaultDuration;
- }
- startIndex = 0;
- }
- for (let i = startIndex; i < endIndex; i++) {
- durations += durationList[i].duration;
- }
- return durations;
- };
- /**
- * Calculates the playlist end time
- *
- * @param {Object} playlist a media playlist object
- * @param {number=} expired the amount of time that has
- * dropped off the front of the playlist in a live scenario
- * @param {boolean|false} useSafeLiveEnd a boolean value indicating whether or not the
- * playlist end calculation should consider the safe live end
- * (truncate the playlist end by three segments). This is normally
- * used for calculating the end of the playlist's seekable range.
- * This takes into account the value of liveEdgePadding.
- * Setting liveEdgePadding to 0 is equivalent to setting this to false.
- * @param {number} liveEdgePadding a number indicating how far from the end of the playlist we should be in seconds.
- * If this is provided, it is used in the safe live end calculation.
- * Setting useSafeLiveEnd=false or liveEdgePadding=0 are equivalent.
- * Corresponds to suggestedPresentationDelay in DASH manifests.
- * @return {number} the end time of playlist
- * @function playlistEnd
- */
-
- const playlistEnd = function (playlist, expired, useSafeLiveEnd, liveEdgePadding) {
- if (!playlist || !playlist.segments) {
- return null;
- }
- if (playlist.endList) {
- return duration(playlist);
- }
- if (expired === null) {
- return null;
- }
- expired = expired || 0;
- let lastSegmentEndTime = intervalDuration(playlist, playlist.mediaSequence + playlist.segments.length, expired);
- if (useSafeLiveEnd) {
- liveEdgePadding = typeof liveEdgePadding === 'number' ? liveEdgePadding : liveEdgeDelay(null, playlist);
- lastSegmentEndTime -= liveEdgePadding;
- } // don't return a time less than zero
-
- return Math.max(0, lastSegmentEndTime);
- };
- /**
- * Calculates the interval of time that is currently seekable in a
- * playlist. The returned time ranges are relative to the earliest
- * moment in the specified playlist that is still available. A full
- * seekable implementation for live streams would need to offset
- * these values by the duration of content that has expired from the
- * stream.
- *
- * @param {Object} playlist a media playlist object
- * dropped off the front of the playlist in a live scenario
- * @param {number=} expired the amount of time that has
- * dropped off the front of the playlist in a live scenario
- * @param {number} liveEdgePadding how far from the end of the playlist we should be in seconds.
- * Corresponds to suggestedPresentationDelay in DASH manifests.
- * @return {TimeRanges} the periods of time that are valid targets
- * for seeking
- */
-
- const seekable = function (playlist, expired, liveEdgePadding) {
- const useSafeLiveEnd = true;
- const seekableStart = expired || 0;
- let seekableEnd = playlistEnd(playlist, expired, useSafeLiveEnd, liveEdgePadding);
- if (seekableEnd === null) {
- return createTimeRanges();
- } // Clamp seekable end since it can not be less than the seekable start
-
- if (seekableEnd < seekableStart) {
- seekableEnd = seekableStart;
- }
- return createTimeRanges(seekableStart, seekableEnd);
- };
- /**
- * Determine the index and estimated starting time of the segment that
- * contains a specified playback position in a media playlist.
- *
- * @param {Object} options.playlist the media playlist to query
- * @param {number} options.currentTime The number of seconds since the earliest
- * possible position to determine the containing segment for
- * @param {number} options.startTime the time when the segment/part starts
- * @param {number} options.startingSegmentIndex the segment index to start looking at.
- * @param {number?} [options.startingPartIndex] the part index to look at within the segment.
- *
- * @return {Object} an object with partIndex, segmentIndex, and startTime.
- */
-
- const getMediaInfoForTime = function ({
- playlist,
- currentTime,
- startingSegmentIndex,
- startingPartIndex,
- startTime,
- exactManifestTimings
- }) {
- let time = currentTime - startTime;
- const partsAndSegments = getPartsAndSegments(playlist);
- let startIndex = 0;
- for (let i = 0; i < partsAndSegments.length; i++) {
- const partAndSegment = partsAndSegments[i];
- if (startingSegmentIndex !== partAndSegment.segmentIndex) {
- continue;
- } // skip this if part index does not match.
-
- if (typeof startingPartIndex === 'number' && typeof partAndSegment.partIndex === 'number' && startingPartIndex !== partAndSegment.partIndex) {
- continue;
- }
- startIndex = i;
- break;
- }
- if (time < 0) {
- // Walk backward from startIndex in the playlist, adding durations
- // until we find a segment that contains `time` and return it
- if (startIndex > 0) {
- for (let i = startIndex - 1; i >= 0; i--) {
- const partAndSegment = partsAndSegments[i];
- time += partAndSegment.duration;
- if (exactManifestTimings) {
- if (time < 0) {
- continue;
- }
- } else if (time + TIME_FUDGE_FACTOR <= 0) {
- continue;
- }
- return {
- partIndex: partAndSegment.partIndex,
- segmentIndex: partAndSegment.segmentIndex,
- startTime: startTime - sumDurations({
- defaultDuration: playlist.targetDuration,
- durationList: partsAndSegments,
- startIndex,
- endIndex: i
- })
- };
- }
- } // We were unable to find a good segment within the playlist
- // so select the first segment
-
- return {
- partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,
- segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,
- startTime: currentTime
- };
- } // When startIndex is negative, we first walk forward to first segment
- // adding target durations. If we "run out of time" before getting to
- // the first segment, return the first segment
-
- if (startIndex < 0) {
- for (let i = startIndex; i < 0; i++) {
- time -= playlist.targetDuration;
- if (time < 0) {
- return {
- partIndex: partsAndSegments[0] && partsAndSegments[0].partIndex || null,
- segmentIndex: partsAndSegments[0] && partsAndSegments[0].segmentIndex || 0,
- startTime: currentTime
- };
- }
- }
- startIndex = 0;
- } // Walk forward from startIndex in the playlist, subtracting durations
- // until we find a segment that contains `time` and return it
-
- for (let i = startIndex; i < partsAndSegments.length; i++) {
- const partAndSegment = partsAndSegments[i];
- time -= partAndSegment.duration;
- const canUseFudgeFactor = partAndSegment.duration > TIME_FUDGE_FACTOR;
- const isExactlyAtTheEnd = time === 0;
- const isExtremelyCloseToTheEnd = canUseFudgeFactor && time + TIME_FUDGE_FACTOR >= 0;
- if (isExactlyAtTheEnd || isExtremelyCloseToTheEnd) {
- // 1) We are exactly at the end of the current segment.
- // 2) We are extremely close to the end of the current segment (The difference is less than 1 / 30).
- // We may encounter this situation when
- // we don't have exact match between segment duration info in the manifest and the actual duration of the segment
- // For example:
- // We appended 3 segments 10 seconds each, meaning we should have 30 sec buffered,
- // but we the actual buffered is 29.99999
- //
- // In both cases:
- // if we passed current time -> it means that we already played current segment
- // if we passed buffered.end -> it means that this segment is already loaded and buffered
- // we should select the next segment if we have one:
- if (i !== partsAndSegments.length - 1) {
- continue;
- }
- }
- if (exactManifestTimings) {
- if (time > 0) {
- continue;
- }
- } else if (time - TIME_FUDGE_FACTOR >= 0) {
- continue;
- }
- return {
- partIndex: partAndSegment.partIndex,
- segmentIndex: partAndSegment.segmentIndex,
- startTime: startTime + sumDurations({
- defaultDuration: playlist.targetDuration,
- durationList: partsAndSegments,
- startIndex,
- endIndex: i
- })
- };
- } // We are out of possible candidates so load the last one...
-
- return {
- segmentIndex: partsAndSegments[partsAndSegments.length - 1].segmentIndex,
- partIndex: partsAndSegments[partsAndSegments.length - 1].partIndex,
- startTime: currentTime
- };
- };
- /**
- * Check whether the playlist is excluded or not.
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist is excluded or not
- * @function isExcluded
- */
-
- const isExcluded = function (playlist) {
- return playlist.excludeUntil && playlist.excludeUntil > Date.now();
- };
- /**
- * Check whether the playlist is compatible with current playback configuration or has
- * been excluded permanently for being incompatible.
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist is incompatible or not
- * @function isIncompatible
- */
-
- const isIncompatible = function (playlist) {
- return playlist.excludeUntil && playlist.excludeUntil === Infinity;
- };
- /**
- * Check whether the playlist is enabled or not.
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist is enabled or not
- * @function isEnabled
- */
-
- const isEnabled = function (playlist) {
- const excluded = isExcluded(playlist);
- return !playlist.disabled && !excluded;
- };
- /**
- * Check whether the playlist has been manually disabled through the representations api.
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist is disabled manually or not
- * @function isDisabled
- */
-
- const isDisabled = function (playlist) {
- return playlist.disabled;
- };
- /**
- * Returns whether the current playlist is an AES encrypted HLS stream
- *
- * @return {boolean} true if it's an AES encrypted HLS stream
- */
-
- const isAes = function (media) {
- for (let i = 0; i < media.segments.length; i++) {
- if (media.segments[i].key) {
- return true;
- }
- }
- return false;
- };
- /**
- * Checks if the playlist has a value for the specified attribute
- *
- * @param {string} attr
- * Attribute to check for
- * @param {Object} playlist
- * The media playlist object
- * @return {boolean}
- * Whether the playlist contains a value for the attribute or not
- * @function hasAttribute
- */
-
- const hasAttribute = function (attr, playlist) {
- return playlist.attributes && playlist.attributes[attr];
- };
- /**
- * Estimates the time required to complete a segment download from the specified playlist
- *
- * @param {number} segmentDuration
- * Duration of requested segment
- * @param {number} bandwidth
- * Current measured bandwidth of the player
- * @param {Object} playlist
- * The media playlist object
- * @param {number=} bytesReceived
- * Number of bytes already received for the request. Defaults to 0
- * @return {number|NaN}
- * The estimated time to request the segment. NaN if bandwidth information for
- * the given playlist is unavailable
- * @function estimateSegmentRequestTime
- */
-
- const estimateSegmentRequestTime = function (segmentDuration, bandwidth, playlist, bytesReceived = 0) {
- if (!hasAttribute('BANDWIDTH', playlist)) {
- return NaN;
- }
- const size = segmentDuration * playlist.attributes.BANDWIDTH;
- return (size - bytesReceived * 8) / bandwidth;
- };
- /*
- * Returns whether the current playlist is the lowest rendition
- *
- * @return {Boolean} true if on lowest rendition
- */
-
- const isLowestEnabledRendition = (main, media) => {
- if (main.playlists.length === 1) {
- return true;
- }
- const currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;
- return main.playlists.filter(playlist => {
- if (!isEnabled(playlist)) {
- return false;
- }
- return (playlist.attributes.BANDWIDTH || 0) < currentBandwidth;
- }).length === 0;
- };
- const playlistMatch = (a, b) => {
- // both playlits are null
- // or only one playlist is non-null
- // no match
- if (!a && !b || !a && b || a && !b) {
- return false;
- } // playlist objects are the same, match
-
- if (a === b) {
- return true;
- } // first try to use id as it should be the most
- // accurate
-
- if (a.id && b.id && a.id === b.id) {
- return true;
- } // next try to use reslovedUri as it should be the
- // second most accurate.
-
- if (a.resolvedUri && b.resolvedUri && a.resolvedUri === b.resolvedUri) {
- return true;
- } // finally try to use uri as it should be accurate
- // but might miss a few cases for relative uris
-
- if (a.uri && b.uri && a.uri === b.uri) {
- return true;
- }
- return false;
- };
- const someAudioVariant = function (main, callback) {
- const AUDIO = main && main.mediaGroups && main.mediaGroups.AUDIO || {};
- let found = false;
- for (const groupName in AUDIO) {
- for (const label in AUDIO[groupName]) {
- found = callback(AUDIO[groupName][label]);
- if (found) {
- break;
- }
- }
- if (found) {
- break;
- }
- }
- return !!found;
- };
- const isAudioOnly = main => {
- // we are audio only if we have no main playlists but do
- // have media group playlists.
- if (!main || !main.playlists || !main.playlists.length) {
- // without audio variants or playlists this
- // is not an audio only main.
- const found = someAudioVariant(main, variant => variant.playlists && variant.playlists.length || variant.uri);
- return found;
- } // if every playlist has only an audio codec it is audio only
-
- for (let i = 0; i < main.playlists.length; i++) {
- const playlist = main.playlists[i];
- const CODECS = playlist.attributes && playlist.attributes.CODECS; // all codecs are audio, this is an audio playlist.
-
- if (CODECS && CODECS.split(',').every(c => isAudioCodec(c))) {
- continue;
- } // playlist is in an audio group it is audio only
-
- const found = someAudioVariant(main, variant => playlistMatch(playlist, variant));
- if (found) {
- continue;
- } // if we make it here this playlist isn't audio and we
- // are not audio only
-
- return false;
- } // if we make it past every playlist without returning, then
- // this is an audio only playlist.
-
- return true;
- }; // exports
-
- var Playlist = {
- liveEdgeDelay,
- duration,
- seekable,
- getMediaInfoForTime,
- isEnabled,
- isDisabled,
- isExcluded,
- isIncompatible,
- playlistEnd,
- isAes,
- hasAttribute,
- estimateSegmentRequestTime,
- isLowestEnabledRendition,
- isAudioOnly,
- playlistMatch,
- segmentDurationWithParts
- };
- const {
- log
- } = videojs;
- const createPlaylistID = (index, uri) => {
- return `${index}-${uri}`;
- }; // default function for creating a group id
-
- const groupID = (type, group, label) => {
- return `placeholder-uri-${type}-${group}-${label}`;
- };
- /**
- * Parses a given m3u8 playlist
- *
- * @param {Function} [onwarn]
- * a function to call when the parser triggers a warning event.
- * @param {Function} [oninfo]
- * a function to call when the parser triggers an info event.
- * @param {string} manifestString
- * The downloaded manifest string
- * @param {Object[]} [customTagParsers]
- * An array of custom tag parsers for the m3u8-parser instance
- * @param {Object[]} [customTagMappers]
- * An array of custom tag mappers for the m3u8-parser instance
- * @param {boolean} [llhls]
- * Whether to keep ll-hls features in the manifest after parsing.
- * @return {Object}
- * The manifest object
- */
-
- const parseManifest = ({
- onwarn,
- oninfo,
- manifestString,
- customTagParsers = [],
- customTagMappers = [],
- llhls
- }) => {
- const parser = new Parser();
- if (onwarn) {
- parser.on('warn', onwarn);
- }
- if (oninfo) {
- parser.on('info', oninfo);
- }
- customTagParsers.forEach(customParser => parser.addParser(customParser));
- customTagMappers.forEach(mapper => parser.addTagMapper(mapper));
- parser.push(manifestString);
- parser.end();
- const manifest = parser.manifest; // remove llhls features from the parsed manifest
- // if we don't want llhls support.
-
- if (!llhls) {
- ['preloadSegment', 'skip', 'serverControl', 'renditionReports', 'partInf', 'partTargetDuration'].forEach(function (k) {
- if (manifest.hasOwnProperty(k)) {
- delete manifest[k];
- }
- });
- if (manifest.segments) {
- manifest.segments.forEach(function (segment) {
- ['parts', 'preloadHints'].forEach(function (k) {
- if (segment.hasOwnProperty(k)) {
- delete segment[k];
- }
- });
- });
- }
- }
- if (!manifest.targetDuration) {
- let targetDuration = 10;
- if (manifest.segments && manifest.segments.length) {
- targetDuration = manifest.segments.reduce((acc, s) => Math.max(acc, s.duration), 0);
- }
- if (onwarn) {
- onwarn({
- message: `manifest has no targetDuration defaulting to ${targetDuration}`
- });
- }
- manifest.targetDuration = targetDuration;
- }
- const parts = getLastParts(manifest);
- if (parts.length && !manifest.partTargetDuration) {
- const partTargetDuration = parts.reduce((acc, p) => Math.max(acc, p.duration), 0);
- if (onwarn) {
- onwarn({
- message: `manifest has no partTargetDuration defaulting to ${partTargetDuration}`
- });
- log.error('LL-HLS manifest has parts but lacks required #EXT-X-PART-INF:PART-TARGET value. See https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis-09#section-4.4.3.7. Playback is not guaranteed.');
- }
- manifest.partTargetDuration = partTargetDuration;
- }
- return manifest;
- };
- /**
- * Loops through all supported media groups in main and calls the provided
- * callback for each group
- *
- * @param {Object} main
- * The parsed main manifest object
- * @param {Function} callback
- * Callback to call for each media group
- */
-
- const forEachMediaGroup = (main, callback) => {
- if (!main.mediaGroups) {
- return;
- }
- ['AUDIO', 'SUBTITLES'].forEach(mediaType => {
- if (!main.mediaGroups[mediaType]) {
- return;
- }
- for (const groupKey in main.mediaGroups[mediaType]) {
- for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
- const mediaProperties = main.mediaGroups[mediaType][groupKey][labelKey];
- callback(mediaProperties, mediaType, groupKey, labelKey);
- }
- }
- });
- };
- /**
- * Adds properties and attributes to the playlist to keep consistent functionality for
- * playlists throughout VHS.
- *
- * @param {Object} config
- * Arguments object
- * @param {Object} config.playlist
- * The media playlist
- * @param {string} [config.uri]
- * The uri to the media playlist (if media playlist is not from within a main
- * playlist)
- * @param {string} id
- * ID to use for the playlist
- */
-
- const setupMediaPlaylist = ({
- playlist,
- uri,
- id
- }) => {
- playlist.id = id;
- playlist.playlistErrors_ = 0;
- if (uri) {
- // For media playlists, m3u8-parser does not have access to a URI, as HLS media
- // playlists do not contain their own source URI, but one is needed for consistency in
- // VHS.
- playlist.uri = uri;
- } // For HLS main playlists, even though certain attributes MUST be defined, the
- // stream may still be played without them.
- // For HLS media playlists, m3u8-parser does not attach an attributes object to the
- // manifest.
- //
- // To avoid undefined reference errors through the project, and make the code easier
- // to write/read, add an empty attributes object for these cases.
-
- playlist.attributes = playlist.attributes || {};
- };
- /**
- * Adds ID, resolvedUri, and attributes properties to each playlist of the main, where
- * necessary. In addition, creates playlist IDs for each playlist and adds playlist ID to
- * playlist references to the playlists array.
- *
- * @param {Object} main
- * The main playlist
- */
-
- const setupMediaPlaylists = main => {
- let i = main.playlists.length;
- while (i--) {
- const playlist = main.playlists[i];
- setupMediaPlaylist({
- playlist,
- id: createPlaylistID(i, playlist.uri)
- });
- playlist.resolvedUri = resolveUrl(main.uri, playlist.uri);
- main.playlists[playlist.id] = playlist; // URI reference added for backwards compatibility
-
- main.playlists[playlist.uri] = playlist; // Although the spec states an #EXT-X-STREAM-INF tag MUST have a BANDWIDTH attribute,
- // the stream can be played without it. Although an attributes property may have been
- // added to the playlist to prevent undefined references, issue a warning to fix the
- // manifest.
-
- if (!playlist.attributes.BANDWIDTH) {
- log.warn('Invalid playlist STREAM-INF detected. Missing BANDWIDTH attribute.');
- }
- }
- };
- /**
- * Adds resolvedUri properties to each media group.
- *
- * @param {Object} main
- * The main playlist
- */
-
- const resolveMediaGroupUris = main => {
- forEachMediaGroup(main, properties => {
- if (properties.uri) {
- properties.resolvedUri = resolveUrl(main.uri, properties.uri);
- }
- });
- };
- /**
- * Creates a main playlist wrapper to insert a sole media playlist into.
- *
- * @param {Object} media
- * Media playlist
- * @param {string} uri
- * The media URI
- *
- * @return {Object}
- * main playlist
- */
-
- const mainForMedia = (media, uri) => {
- const id = createPlaylistID(0, uri);
- const main = {
- mediaGroups: {
- 'AUDIO': {},
- 'VIDEO': {},
- 'CLOSED-CAPTIONS': {},
- 'SUBTITLES': {}
- },
- uri: window.location.href,
- resolvedUri: window.location.href,
- playlists: [{
- uri,
- id,
- resolvedUri: uri,
- // m3u8-parser does not attach an attributes property to media playlists so make
- // sure that the property is attached to avoid undefined reference errors
- attributes: {}
- }]
- }; // set up ID reference
-
- main.playlists[id] = main.playlists[0]; // URI reference added for backwards compatibility
-
- main.playlists[uri] = main.playlists[0];
- return main;
- };
- /**
- * Does an in-place update of the main manifest to add updated playlist URI references
- * as well as other properties needed by VHS that aren't included by the parser.
- *
- * @param {Object} main
- * main manifest object
- * @param {string} uri
- * The source URI
- * @param {function} createGroupID
- * A function to determine how to create the groupID for mediaGroups
- */
-
- const addPropertiesToMain = (main, uri, createGroupID = groupID) => {
- main.uri = uri;
- for (let i = 0; i < main.playlists.length; i++) {
- if (!main.playlists[i].uri) {
- // Set up phony URIs for the playlists since playlists are referenced by their URIs
- // throughout VHS, but some formats (e.g., DASH) don't have external URIs
- // TODO: consider adding dummy URIs in mpd-parser
- const phonyUri = `placeholder-uri-${i}`;
- main.playlists[i].uri = phonyUri;
- }
- }
- const audioOnlyMain = isAudioOnly(main);
- forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
- // add a playlist array under properties
- if (!properties.playlists || !properties.playlists.length) {
- // If the manifest is audio only and this media group does not have a uri, check
- // if the media group is located in the main list of playlists. If it is, don't add
- // placeholder properties as it shouldn't be considered an alternate audio track.
- if (audioOnlyMain && mediaType === 'AUDIO' && !properties.uri) {
- for (let i = 0; i < main.playlists.length; i++) {
- const p = main.playlists[i];
- if (p.attributes && p.attributes.AUDIO && p.attributes.AUDIO === groupKey) {
- return;
- }
- }
- }
- properties.playlists = [_extends$1({}, properties)];
- }
- properties.playlists.forEach(function (p, i) {
- const groupId = createGroupID(mediaType, groupKey, labelKey, p);
- const id = createPlaylistID(i, groupId);
- if (p.uri) {
- p.resolvedUri = p.resolvedUri || resolveUrl(main.uri, p.uri);
- } else {
- // DEPRECATED, this has been added to prevent a breaking change.
- // previously we only ever had a single media group playlist, so
- // we mark the first playlist uri without prepending the index as we used to
- // ideally we would do all of the playlists the same way.
- p.uri = i === 0 ? groupId : id; // don't resolve a placeholder uri to an absolute url, just use
- // the placeholder again
-
- p.resolvedUri = p.uri;
- }
- p.id = p.id || id; // add an empty attributes object, all playlists are
- // expected to have this.
-
- p.attributes = p.attributes || {}; // setup ID and URI references (URI for backwards compatibility)
-
- main.playlists[p.id] = p;
- main.playlists[p.uri] = p;
- });
- });
- setupMediaPlaylists(main);
- resolveMediaGroupUris(main);
- };
- class DateRangesStorage {
- constructor() {
- this.offset_ = null;
- this.pendingDateRanges_ = new Map();
- this.processedDateRanges_ = new Map();
- }
- setOffset(segments = []) {
- // already set
- if (this.offset_ !== null) {
- return;
- } // no segment to process
-
- if (!segments.length) {
- return;
- }
- const [firstSegment] = segments; // no program date time
-
- if (firstSegment.programDateTime === undefined) {
- return;
- } // Set offset as ProgramDateTime for the very first segment of the very first playlist load:
-
- this.offset_ = firstSegment.programDateTime / 1000;
- }
- setPendingDateRanges(dateRanges = []) {
- if (!dateRanges.length) {
- return;
- }
- const [dateRange] = dateRanges;
- const startTime = dateRange.startDate.getTime();
- this.trimProcessedDateRanges_(startTime);
- this.pendingDateRanges_ = dateRanges.reduce((map, pendingDateRange) => {
- map.set(pendingDateRange.id, pendingDateRange);
- return map;
- }, new Map());
- }
- processDateRange(dateRange) {
- this.pendingDateRanges_.delete(dateRange.id);
- this.processedDateRanges_.set(dateRange.id, dateRange);
- }
- getDateRangesToProcess() {
- if (this.offset_ === null) {
- return [];
- }
- const dateRangeClasses = {};
- const dateRangesToProcess = [];
- this.pendingDateRanges_.forEach((dateRange, id) => {
- if (this.processedDateRanges_.has(id)) {
- return;
- }
- dateRange.startTime = dateRange.startDate.getTime() / 1000 - this.offset_;
- dateRange.processDateRange = () => this.processDateRange(dateRange);
- dateRangesToProcess.push(dateRange);
- if (!dateRange.class) {
- return;
- }
- if (dateRangeClasses[dateRange.class]) {
- const length = dateRangeClasses[dateRange.class].push(dateRange);
- dateRange.classListIndex = length - 1;
- } else {
- dateRangeClasses[dateRange.class] = [dateRange];
- dateRange.classListIndex = 0;
- }
- });
- for (const dateRange of dateRangesToProcess) {
- const classList = dateRangeClasses[dateRange.class] || [];
- if (dateRange.endDate) {
- dateRange.endTime = dateRange.endDate.getTime() / 1000 - this.offset_;
- } else if (dateRange.endOnNext && classList[dateRange.classListIndex + 1]) {
- dateRange.endTime = classList[dateRange.classListIndex + 1].startTime;
- } else if (dateRange.duration) {
- dateRange.endTime = dateRange.startTime + dateRange.duration;
- } else if (dateRange.plannedDuration) {
- dateRange.endTime = dateRange.startTime + dateRange.plannedDuration;
- } else {
- dateRange.endTime = dateRange.startTime;
- }
- }
- return dateRangesToProcess;
- }
- trimProcessedDateRanges_(startTime) {
- const copy = new Map(this.processedDateRanges_);
- copy.forEach((dateRange, id) => {
- if (dateRange.startDate.getTime() < startTime) {
- this.processedDateRanges_.delete(id);
- }
- });
- }
- }
- const {
- EventTarget: EventTarget$1
- } = videojs;
- const addLLHLSQueryDirectives = (uri, media) => {
- if (media.endList || !media.serverControl) {
- return uri;
- }
- const parameters = {};
- if (media.serverControl.canBlockReload) {
- const {
- preloadSegment
- } = media; // next msn is a zero based value, length is not.
-
- let nextMSN = media.mediaSequence + media.segments.length; // If preload segment has parts then it is likely
- // that we are going to request a part of that preload segment.
- // the logic below is used to determine that.
-
- if (preloadSegment) {
- const parts = preloadSegment.parts || []; // _HLS_part is a zero based index
-
- const nextPart = getKnownPartCount(media) - 1; // if nextPart is > -1 and not equal to just the
- // length of parts, then we know we had part preload hints
- // and we need to add the _HLS_part= query
-
- if (nextPart > -1 && nextPart !== parts.length - 1) {
- // add existing parts to our preload hints
- // eslint-disable-next-line
- parameters._HLS_part = nextPart;
- } // this if statement makes sure that we request the msn
- // of the preload segment if:
- // 1. the preload segment had parts (and was not yet a full segment)
- // but was added to our segments array
- // 2. the preload segment had preload hints for parts that are not in
- // the manifest yet.
- // in all other cases we want the segment after the preload segment
- // which will be given by using media.segments.length because it is 1 based
- // rather than 0 based.
-
- if (nextPart > -1 || parts.length) {
- nextMSN--;
- }
- } // add _HLS_msn= in front of any _HLS_part query
- // eslint-disable-next-line
-
- parameters._HLS_msn = nextMSN;
- }
- if (media.serverControl && media.serverControl.canSkipUntil) {
- // add _HLS_skip= infront of all other queries.
- // eslint-disable-next-line
- parameters._HLS_skip = media.serverControl.canSkipDateranges ? 'v2' : 'YES';
- }
- if (Object.keys(parameters).length) {
- const parsedUri = new window.URL(uri);
- ['_HLS_skip', '_HLS_msn', '_HLS_part'].forEach(function (name) {
- if (!parameters.hasOwnProperty(name)) {
- return;
- }
- parsedUri.searchParams.set(name, parameters[name]);
- });
- uri = parsedUri.toString();
- }
- return uri;
- };
- /**
- * Returns a new segment object with properties and
- * the parts array merged.
- *
- * @param {Object} a the old segment
- * @param {Object} b the new segment
- *
- * @return {Object} the merged segment
- */
-
- const updateSegment = (a, b) => {
- if (!a) {
- return b;
- }
- const result = merge(a, b); // if only the old segment has preload hints
- // and the new one does not, remove preload hints.
-
- if (a.preloadHints && !b.preloadHints) {
- delete result.preloadHints;
- } // if only the old segment has parts
- // then the parts are no longer valid
-
- if (a.parts && !b.parts) {
- delete result.parts; // if both segments have parts
- // copy part propeties from the old segment
- // to the new one.
- } else if (a.parts && b.parts) {
- for (let i = 0; i < b.parts.length; i++) {
- if (a.parts && a.parts[i]) {
- result.parts[i] = merge(a.parts[i], b.parts[i]);
- }
- }
- } // set skipped to false for segments that have
- // have had information merged from the old segment.
-
- if (!a.skipped && b.skipped) {
- result.skipped = false;
- } // set preload to false for segments that have
- // had information added in the new segment.
-
- if (a.preload && !b.preload) {
- result.preload = false;
- }
- return result;
- };
- /**
- * Returns a new array of segments that is the result of merging
- * properties from an older list of segments onto an updated
- * list. No properties on the updated playlist will be ovewritten.
- *
- * @param {Array} original the outdated list of segments
- * @param {Array} update the updated list of segments
- * @param {number=} offset the index of the first update
- * segment in the original segment list. For non-live playlists,
- * this should always be zero and does not need to be
- * specified. For live playlists, it should be the difference
- * between the media sequence numbers in the original and updated
- * playlists.
- * @return {Array} a list of merged segment objects
- */
-
- const updateSegments = (original, update, offset) => {
- const oldSegments = original.slice();
- const newSegments = update.slice();
- offset = offset || 0;
- const result = [];
- let currentMap;
- for (let newIndex = 0; newIndex < newSegments.length; newIndex++) {
- const oldSegment = oldSegments[newIndex + offset];
- const newSegment = newSegments[newIndex];
- if (oldSegment) {
- currentMap = oldSegment.map || currentMap;
- result.push(updateSegment(oldSegment, newSegment));
- } else {
- // carry over map to new segment if it is missing
- if (currentMap && !newSegment.map) {
- newSegment.map = currentMap;
- }
- result.push(newSegment);
- }
- }
- return result;
- };
- const resolveSegmentUris = (segment, baseUri) => {
- // preloadSegment will not have a uri at all
- // as the segment isn't actually in the manifest yet, only parts
- if (!segment.resolvedUri && segment.uri) {
- segment.resolvedUri = resolveUrl(baseUri, segment.uri);
- }
- if (segment.key && !segment.key.resolvedUri) {
- segment.key.resolvedUri = resolveUrl(baseUri, segment.key.uri);
- }
- if (segment.map && !segment.map.resolvedUri) {
- segment.map.resolvedUri = resolveUrl(baseUri, segment.map.uri);
- }
- if (segment.map && segment.map.key && !segment.map.key.resolvedUri) {
- segment.map.key.resolvedUri = resolveUrl(baseUri, segment.map.key.uri);
- }
- if (segment.parts && segment.parts.length) {
- segment.parts.forEach(p => {
- if (p.resolvedUri) {
- return;
- }
- p.resolvedUri = resolveUrl(baseUri, p.uri);
- });
- }
- if (segment.preloadHints && segment.preloadHints.length) {
- segment.preloadHints.forEach(p => {
- if (p.resolvedUri) {
- return;
- }
- p.resolvedUri = resolveUrl(baseUri, p.uri);
- });
- }
- };
- const getAllSegments = function (media) {
- const segments = media.segments || [];
- const preloadSegment = media.preloadSegment; // a preloadSegment with only preloadHints is not currently
- // a usable segment, only include a preloadSegment that has
- // parts.
-
- if (preloadSegment && preloadSegment.parts && preloadSegment.parts.length) {
- // if preloadHints has a MAP that means that the
- // init segment is going to change. We cannot use any of the parts
- // from this preload segment.
- if (preloadSegment.preloadHints) {
- for (let i = 0; i < preloadSegment.preloadHints.length; i++) {
- if (preloadSegment.preloadHints[i].type === 'MAP') {
- return segments;
- }
- }
- } // set the duration for our preload segment to target duration.
-
- preloadSegment.duration = media.targetDuration;
- preloadSegment.preload = true;
- segments.push(preloadSegment);
- }
- return segments;
- }; // consider the playlist unchanged if the playlist object is the same or
- // the number of segments is equal, the media sequence number is unchanged,
- // and this playlist hasn't become the end of the playlist
-
- const isPlaylistUnchanged = (a, b) => a === b || a.segments && b.segments && a.segments.length === b.segments.length && a.endList === b.endList && a.mediaSequence === b.mediaSequence && a.preloadSegment === b.preloadSegment;
- /**
- * Returns a new main playlist that is the result of merging an
- * updated media playlist into the original version. If the
- * updated media playlist does not match any of the playlist
- * entries in the original main playlist, null is returned.
- *
- * @param {Object} main a parsed main M3U8 object
- * @param {Object} media a parsed media M3U8 object
- * @return {Object} a new object that represents the original
- * main playlist with the updated media playlist merged in, or
- * null if the merge produced no change.
- */
-
- const updateMain$1 = (main, newMedia, unchangedCheck = isPlaylistUnchanged) => {
- const result = merge(main, {});
- const oldMedia = result.playlists[newMedia.id];
- if (!oldMedia) {
- return null;
- }
- if (unchangedCheck(oldMedia, newMedia)) {
- return null;
- }
- newMedia.segments = getAllSegments(newMedia);
- const mergedPlaylist = merge(oldMedia, newMedia); // always use the new media's preload segment
-
- if (mergedPlaylist.preloadSegment && !newMedia.preloadSegment) {
- delete mergedPlaylist.preloadSegment;
- } // if the update could overlap existing segment information, merge the two segment lists
-
- if (oldMedia.segments) {
- if (newMedia.skip) {
- newMedia.segments = newMedia.segments || []; // add back in objects for skipped segments, so that we merge
- // old properties into the new segments
-
- for (let i = 0; i < newMedia.skip.skippedSegments; i++) {
- newMedia.segments.unshift({
- skipped: true
- });
- }
- }
- mergedPlaylist.segments = updateSegments(oldMedia.segments, newMedia.segments, newMedia.mediaSequence - oldMedia.mediaSequence);
- } // resolve any segment URIs to prevent us from having to do it later
-
- mergedPlaylist.segments.forEach(segment => {
- resolveSegmentUris(segment, mergedPlaylist.resolvedUri);
- }); // TODO Right now in the playlists array there are two references to each playlist, one
- // that is referenced by index, and one by URI. The index reference may no longer be
- // necessary.
-
- for (let i = 0; i < result.playlists.length; i++) {
- if (result.playlists[i].id === newMedia.id) {
- result.playlists[i] = mergedPlaylist;
- }
- }
- result.playlists[newMedia.id] = mergedPlaylist; // URI reference added for backwards compatibility
-
- result.playlists[newMedia.uri] = mergedPlaylist; // update media group playlist references.
-
- forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
- if (!properties.playlists) {
- return;
- }
- for (let i = 0; i < properties.playlists.length; i++) {
- if (newMedia.id === properties.playlists[i].id) {
- properties.playlists[i] = mergedPlaylist;
- }
- }
- });
- return result;
- };
- /**
- * Calculates the time to wait before refreshing a live playlist
- *
- * @param {Object} media
- * The current media
- * @param {boolean} update
- * True if there were any updates from the last refresh, false otherwise
- * @return {number}
- * The time in ms to wait before refreshing the live playlist
- */
-
- const refreshDelay = (media, update) => {
- const segments = media.segments || [];
- const lastSegment = segments[segments.length - 1];
- const lastPart = lastSegment && lastSegment.parts && lastSegment.parts[lastSegment.parts.length - 1];
- const lastDuration = lastPart && lastPart.duration || lastSegment && lastSegment.duration;
- if (update && lastDuration) {
- return lastDuration * 1000;
- } // if the playlist is unchanged since the last reload or last segment duration
- // cannot be determined, try again after half the target duration
-
- return (media.partTargetDuration || media.targetDuration || 10) * 500;
- };
- /**
- * Load a playlist from a remote location
- *
- * @class PlaylistLoader
- * @extends Stream
- * @param {string|Object} src url or object of manifest
- * @param {boolean} withCredentials the withCredentials xhr option
- * @class
- */
-
- class PlaylistLoader extends EventTarget$1 {
- constructor(src, vhs, options = {}) {
- super();
- if (!src) {
- throw new Error('A non-empty playlist URL or object is required');
- }
- this.logger_ = logger('PlaylistLoader');
- const {
- withCredentials = false
- } = options;
- this.src = src;
- this.vhs_ = vhs;
- this.withCredentials = withCredentials;
- this.addDateRangesToTextTrack_ = options.addDateRangesToTextTrack;
- const vhsOptions = vhs.options_;
- this.customTagParsers = vhsOptions && vhsOptions.customTagParsers || [];
- this.customTagMappers = vhsOptions && vhsOptions.customTagMappers || [];
- this.llhls = vhsOptions && vhsOptions.llhls;
- this.dateRangesStorage_ = new DateRangesStorage(); // initialize the loader state
-
- this.state = 'HAVE_NOTHING'; // live playlist staleness timeout
-
- this.handleMediaupdatetimeout_ = this.handleMediaupdatetimeout_.bind(this);
- this.on('mediaupdatetimeout', this.handleMediaupdatetimeout_);
- this.on('loadedplaylist', this.handleLoadedPlaylist_.bind(this));
- }
- handleLoadedPlaylist_() {
- const mediaPlaylist = this.media();
- if (!mediaPlaylist) {
- return;
- }
- this.dateRangesStorage_.setOffset(mediaPlaylist.segments);
- this.dateRangesStorage_.setPendingDateRanges(mediaPlaylist.dateRanges);
- const availableDateRanges = this.dateRangesStorage_.getDateRangesToProcess();
- if (!availableDateRanges.length || !this.addDateRangesToTextTrack_) {
- return;
- }
- this.addDateRangesToTextTrack_(availableDateRanges);
- }
- handleMediaupdatetimeout_() {
- if (this.state !== 'HAVE_METADATA') {
- // only refresh the media playlist if no other activity is going on
- return;
- }
- const media = this.media();
- let uri = resolveUrl(this.main.uri, media.uri);
- if (this.llhls) {
- uri = addLLHLSQueryDirectives(uri, media);
- }
- this.state = 'HAVE_CURRENT_METADATA';
- this.request = this.vhs_.xhr({
- uri,
- withCredentials: this.withCredentials,
- requestType: 'hls-playlist'
- }, (error, req) => {
- // disposed
- if (!this.request) {
- return;
- }
- if (error) {
- return this.playlistRequestError(this.request, this.media(), 'HAVE_METADATA');
- }
- this.haveMetadata({
- playlistString: this.request.responseText,
- url: this.media().uri,
- id: this.media().id
- });
- });
- }
- playlistRequestError(xhr, playlist, startingState) {
- const {
- uri,
- id
- } = playlist; // any in-flight request is now finished
-
- this.request = null;
- if (startingState) {
- this.state = startingState;
- }
- this.error = {
- playlist: this.main.playlists[id],
- status: xhr.status,
- message: `HLS playlist request error at URL: ${uri}.`,
- responseText: xhr.responseText,
- code: xhr.status >= 500 ? 4 : 2,
- metadata: {
- errorType: videojs.Error.HlsPlaylistRequestError
- }
- };
- this.trigger('error');
- }
- parseManifest_({
- url,
- manifestString
- }) {
- return parseManifest({
- onwarn: ({
- message
- }) => this.logger_(`m3u8-parser warn for ${url}: ${message}`),
- oninfo: ({
- message
- }) => this.logger_(`m3u8-parser info for ${url}: ${message}`),
- manifestString,
- customTagParsers: this.customTagParsers,
- customTagMappers: this.customTagMappers,
- llhls: this.llhls
- });
- }
- /**
- * Update the playlist loader's state in response to a new or updated playlist.
- *
- * @param {string} [playlistString]
- * Playlist string (if playlistObject is not provided)
- * @param {Object} [playlistObject]
- * Playlist object (if playlistString is not provided)
- * @param {string} url
- * URL of playlist
- * @param {string} id
- * ID to use for playlist
- */
-
- haveMetadata({
- playlistString,
- playlistObject,
- url,
- id
- }) {
- // any in-flight request is now finished
- this.request = null;
- this.state = 'HAVE_METADATA';
- const playlist = playlistObject || this.parseManifest_({
- url,
- manifestString: playlistString
- });
- playlist.lastRequest = Date.now();
- setupMediaPlaylist({
- playlist,
- uri: url,
- id
- }); // merge this playlist into the main manifest
-
- const update = updateMain$1(this.main, playlist);
- this.targetDuration = playlist.partTargetDuration || playlist.targetDuration;
- this.pendingMedia_ = null;
- if (update) {
- this.main = update;
- this.media_ = this.main.playlists[id];
- } else {
- this.trigger('playlistunchanged');
- }
- this.updateMediaUpdateTimeout_(refreshDelay(this.media(), !!update));
- this.trigger('loadedplaylist');
- }
- /**
- * Abort any outstanding work and clean up.
- */
-
- dispose() {
- this.trigger('dispose');
- this.stopRequest();
- window.clearTimeout(this.mediaUpdateTimeout);
- window.clearTimeout(this.finalRenditionTimeout);
- this.dateRangesStorage_ = new DateRangesStorage();
- this.off();
- }
- stopRequest() {
- if (this.request) {
- const oldRequest = this.request;
- this.request = null;
- oldRequest.onreadystatechange = null;
- oldRequest.abort();
- }
- }
- /**
- * When called without any arguments, returns the currently
- * active media playlist. When called with a single argument,
- * triggers the playlist loader to asynchronously switch to the
- * specified media playlist. Calling this method while the
- * loader is in the HAVE_NOTHING causes an error to be emitted
- * but otherwise has no effect.
- *
- * @param {Object=} playlist the parsed media playlist
- * object to switch to
- * @param {boolean=} shouldDelay whether we should delay the request by half target duration
- *
- * @return {Playlist} the current loaded media
- */
-
- media(playlist, shouldDelay) {
- // getter
- if (!playlist) {
- return this.media_;
- } // setter
-
- if (this.state === 'HAVE_NOTHING') {
- throw new Error('Cannot switch media playlist from ' + this.state);
- } // find the playlist object if the target playlist has been
- // specified by URI
-
- if (typeof playlist === 'string') {
- if (!this.main.playlists[playlist]) {
- throw new Error('Unknown playlist URI: ' + playlist);
- }
- playlist = this.main.playlists[playlist];
- }
- window.clearTimeout(this.finalRenditionTimeout);
- if (shouldDelay) {
- const delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000;
- this.finalRenditionTimeout = window.setTimeout(this.media.bind(this, playlist, false), delay);
- return;
- }
- const startingState = this.state;
- const mediaChange = !this.media_ || playlist.id !== this.media_.id;
- const mainPlaylistRef = this.main.playlists[playlist.id]; // switch to fully loaded playlists immediately
-
- if (mainPlaylistRef && mainPlaylistRef.endList ||
- // handle the case of a playlist object (e.g., if using vhs-json with a resolved
- // media playlist or, for the case of demuxed audio, a resolved audio media group)
- playlist.endList && playlist.segments.length) {
- // abort outstanding playlist requests
- if (this.request) {
- this.request.onreadystatechange = null;
- this.request.abort();
- this.request = null;
- }
- this.state = 'HAVE_METADATA';
- this.media_ = playlist; // trigger media change if the active media has been updated
-
- if (mediaChange) {
- this.trigger('mediachanging');
- if (startingState === 'HAVE_MAIN_MANIFEST') {
- // The initial playlist was a main manifest, and the first media selected was
- // also provided (in the form of a resolved playlist object) as part of the
- // source object (rather than just a URL). Therefore, since the media playlist
- // doesn't need to be requested, loadedmetadata won't trigger as part of the
- // normal flow, and needs an explicit trigger here.
- this.trigger('loadedmetadata');
- } else {
- this.trigger('mediachange');
- }
- }
- return;
- } // We update/set the timeout here so that live playlists
- // that are not a media change will "start" the loader as expected.
- // We expect that this function will start the media update timeout
- // cycle again. This also prevents a playlist switch failure from
- // causing us to stall during live.
-
- this.updateMediaUpdateTimeout_(refreshDelay(playlist, true)); // switching to the active playlist is a no-op
-
- if (!mediaChange) {
- return;
- }
- this.state = 'SWITCHING_MEDIA'; // there is already an outstanding playlist request
-
- if (this.request) {
- if (playlist.resolvedUri === this.request.url) {
- // requesting to switch to the same playlist multiple times
- // has no effect after the first
- return;
- }
- this.request.onreadystatechange = null;
- this.request.abort();
- this.request = null;
- } // request the new playlist
-
- if (this.media_) {
- this.trigger('mediachanging');
- }
- this.pendingMedia_ = playlist;
- this.request = this.vhs_.xhr({
- uri: playlist.resolvedUri,
- withCredentials: this.withCredentials,
- requestType: 'hls-playlist'
- }, (error, req) => {
- // disposed
- if (!this.request) {
- return;
- }
- playlist.lastRequest = Date.now();
- playlist.resolvedUri = resolveManifestRedirect(playlist.resolvedUri, req);
- if (error) {
- return this.playlistRequestError(this.request, playlist, startingState);
- }
- this.haveMetadata({
- playlistString: req.responseText,
- url: playlist.uri,
- id: playlist.id
- }); // fire loadedmetadata the first time a media playlist is loaded
-
- if (startingState === 'HAVE_MAIN_MANIFEST') {
- this.trigger('loadedmetadata');
- } else {
- this.trigger('mediachange');
- }
- });
- }
- /**
- * pause loading of the playlist
- */
-
- pause() {
- if (this.mediaUpdateTimeout) {
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- }
- this.stopRequest();
- if (this.state === 'HAVE_NOTHING') {
- // If we pause the loader before any data has been retrieved, its as if we never
- // started, so reset to an unstarted state.
- this.started = false;
- } // Need to restore state now that no activity is happening
-
- if (this.state === 'SWITCHING_MEDIA') {
- // if the loader was in the process of switching media, it should either return to
- // HAVE_MAIN_MANIFEST or HAVE_METADATA depending on if the loader has loaded a media
- // playlist yet. This is determined by the existence of loader.media_
- if (this.media_) {
- this.state = 'HAVE_METADATA';
- } else {
- this.state = 'HAVE_MAIN_MANIFEST';
- }
- } else if (this.state === 'HAVE_CURRENT_METADATA') {
- this.state = 'HAVE_METADATA';
- }
- }
- /**
- * start loading of the playlist
- */
-
- load(shouldDelay) {
- if (this.mediaUpdateTimeout) {
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- }
- const media = this.media();
- if (shouldDelay) {
- const delay = media ? (media.partTargetDuration || media.targetDuration) / 2 * 1000 : 5 * 1000;
- this.mediaUpdateTimeout = window.setTimeout(() => {
- this.mediaUpdateTimeout = null;
- this.load();
- }, delay);
- return;
- }
- if (!this.started) {
- this.start();
- return;
- }
- if (media && !media.endList) {
- this.trigger('mediaupdatetimeout');
- } else {
- this.trigger('loadedplaylist');
- }
- }
- updateMediaUpdateTimeout_(delay) {
- if (this.mediaUpdateTimeout) {
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- } // we only have use mediaupdatetimeout for live playlists.
-
- if (!this.media() || this.media().endList) {
- return;
- }
- this.mediaUpdateTimeout = window.setTimeout(() => {
- this.mediaUpdateTimeout = null;
- this.trigger('mediaupdatetimeout');
- this.updateMediaUpdateTimeout_(delay);
- }, delay);
- }
- /**
- * start loading of the playlist
- */
-
- start() {
- this.started = true;
- if (typeof this.src === 'object') {
- // in the case of an entirely constructed manifest object (meaning there's no actual
- // manifest on a server), default the uri to the page's href
- if (!this.src.uri) {
- this.src.uri = window.location.href;
- } // resolvedUri is added on internally after the initial request. Since there's no
- // request for pre-resolved manifests, add on resolvedUri here.
-
- this.src.resolvedUri = this.src.uri; // Since a manifest object was passed in as the source (instead of a URL), the first
- // request can be skipped (since the top level of the manifest, at a minimum, is
- // already available as a parsed manifest object). However, if the manifest object
- // represents a main playlist, some media playlists may need to be resolved before
- // the starting segment list is available. Therefore, go directly to setup of the
- // initial playlist, and let the normal flow continue from there.
- //
- // Note that the call to setup is asynchronous, as other sections of VHS may assume
- // that the first request is asynchronous.
-
- setTimeout(() => {
- this.setupInitialPlaylist(this.src);
- }, 0);
- return;
- } // request the specified URL
-
- this.request = this.vhs_.xhr({
- uri: this.src,
- withCredentials: this.withCredentials,
- requestType: 'hls-playlist'
- }, (error, req) => {
- // disposed
- if (!this.request) {
- return;
- } // clear the loader's request reference
-
- this.request = null;
- if (error) {
- this.error = {
- status: req.status,
- message: `HLS playlist request error at URL: ${this.src}.`,
- responseText: req.responseText,
- // MEDIA_ERR_NETWORK
- code: 2,
- metadata: {
- errorType: videojs.Error.HlsPlaylistRequestError
- }
- };
- if (this.state === 'HAVE_NOTHING') {
- this.started = false;
- }
- return this.trigger('error');
- }
- this.src = resolveManifestRedirect(this.src, req);
- const manifest = this.parseManifest_({
- manifestString: req.responseText,
- url: this.src
- });
- this.setupInitialPlaylist(manifest);
- });
- }
- srcUri() {
- return typeof this.src === 'string' ? this.src : this.src.uri;
- }
- /**
- * Given a manifest object that's either a main or media playlist, trigger the proper
- * events and set the state of the playlist loader.
- *
- * If the manifest object represents a main playlist, `loadedplaylist` will be
- * triggered to allow listeners to select a playlist. If none is selected, the loader
- * will default to the first one in the playlists array.
- *
- * If the manifest object represents a media playlist, `loadedplaylist` will be
- * triggered followed by `loadedmetadata`, as the only available playlist is loaded.
- *
- * In the case of a media playlist, a main playlist object wrapper with one playlist
- * will be created so that all logic can handle playlists in the same fashion (as an
- * assumed manifest object schema).
- *
- * @param {Object} manifest
- * The parsed manifest object
- */
-
- setupInitialPlaylist(manifest) {
- this.state = 'HAVE_MAIN_MANIFEST';
- if (manifest.playlists) {
- this.main = manifest;
- addPropertiesToMain(this.main, this.srcUri()); // If the initial main playlist has playlists wtih segments already resolved,
- // then resolve URIs in advance, as they are usually done after a playlist request,
- // which may not happen if the playlist is resolved.
-
- manifest.playlists.forEach(playlist => {
- playlist.segments = getAllSegments(playlist);
- playlist.segments.forEach(segment => {
- resolveSegmentUris(segment, playlist.resolvedUri);
- });
- });
- this.trigger('loadedplaylist');
- if (!this.request) {
- // no media playlist was specifically selected so start
- // from the first listed one
- this.media(this.main.playlists[0]);
- }
- return;
- } // In order to support media playlists passed in as vhs-json, the case where the uri
- // is not provided as part of the manifest should be considered, and an appropriate
- // default used.
-
- const uri = this.srcUri() || window.location.href;
- this.main = mainForMedia(manifest, uri);
- this.haveMetadata({
- playlistObject: manifest,
- url: uri,
- id: this.main.playlists[0].id
- });
- this.trigger('loadedmetadata');
- }
- /**
- * Updates or deletes a preexisting pathway clone.
- * Ensures that all playlists related to the old pathway clone are
- * either updated or deleted.
- *
- * @param {Object} clone On update, the pathway clone object for the newly updated pathway clone.
- * On delete, the old pathway clone object to be deleted.
- * @param {boolean} isUpdate True if the pathway is to be updated,
- * false if it is meant to be deleted.
- */
-
- updateOrDeleteClone(clone, isUpdate) {
- const main = this.main;
- const pathway = clone.ID;
- let i = main.playlists.length; // Iterate backwards through the playlist so we can remove playlists if necessary.
-
- while (i--) {
- const p = main.playlists[i];
- if (p.attributes['PATHWAY-ID'] === pathway) {
- const oldPlaylistUri = p.resolvedUri;
- const oldPlaylistId = p.id; // update the indexed playlist and add new playlists by ID and URI
-
- if (isUpdate) {
- const newPlaylistUri = this.createCloneURI_(p.resolvedUri, clone);
- const newPlaylistId = createPlaylistID(pathway, newPlaylistUri);
- const attributes = this.createCloneAttributes_(pathway, p.attributes);
- const updatedPlaylist = this.createClonePlaylist_(p, newPlaylistId, clone, attributes);
- main.playlists[i] = updatedPlaylist;
- main.playlists[newPlaylistId] = updatedPlaylist;
- main.playlists[newPlaylistUri] = updatedPlaylist;
- } else {
- // Remove the indexed playlist.
- main.playlists.splice(i, 1);
- } // Remove playlists by the old ID and URI.
-
- delete main.playlists[oldPlaylistId];
- delete main.playlists[oldPlaylistUri];
- }
- }
- this.updateOrDeleteCloneMedia(clone, isUpdate);
- }
- /**
- * Updates or deletes media data based on the pathway clone object.
- * Due to the complexity of the media groups and playlists, in all cases
- * we remove all of the old media groups and playlists.
- * On updates, we then create new media groups and playlists based on the
- * new pathway clone object.
- *
- * @param {Object} clone The pathway clone object for the newly updated pathway clone.
- * @param {boolean} isUpdate True if the pathway is to be updated,
- * false if it is meant to be deleted.
- */
-
- updateOrDeleteCloneMedia(clone, isUpdate) {
- const main = this.main;
- const id = clone.ID;
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
- if (!main.mediaGroups[mediaType] || !main.mediaGroups[mediaType][id]) {
- return;
- }
- for (const groupKey in main.mediaGroups[mediaType]) {
- // Remove all media playlists for the media group for this pathway clone.
- if (groupKey === id) {
- for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
- const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
- oldMedia.playlists.forEach((p, i) => {
- const oldMediaPlaylist = main.playlists[p.id];
- const oldPlaylistId = oldMediaPlaylist.id;
- const oldPlaylistUri = oldMediaPlaylist.resolvedUri;
- delete main.playlists[oldPlaylistId];
- delete main.playlists[oldPlaylistUri];
- });
- } // Delete the old media group.
-
- delete main.mediaGroups[mediaType][groupKey];
- }
- }
- }); // Create the new media groups and playlists if there is an update.
-
- if (isUpdate) {
- this.createClonedMediaGroups_(clone);
- }
- }
- /**
- * Given a pathway clone object, clones all necessary playlists.
- *
- * @param {Object} clone The pathway clone object.
- * @param {Object} basePlaylist The original playlist to clone from.
- */
-
- addClonePathway(clone, basePlaylist = {}) {
- const main = this.main;
- const index = main.playlists.length;
- const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
- const playlistId = createPlaylistID(clone.ID, uri);
- const attributes = this.createCloneAttributes_(clone.ID, basePlaylist.attributes);
- const playlist = this.createClonePlaylist_(basePlaylist, playlistId, clone, attributes);
- main.playlists[index] = playlist; // add playlist by ID and URI
-
- main.playlists[playlistId] = playlist;
- main.playlists[uri] = playlist;
- this.createClonedMediaGroups_(clone);
- }
- /**
- * Given a pathway clone object we create clones of all media.
- * In this function, all necessary information and updated playlists
- * are added to the `mediaGroup` object.
- * Playlists are also added to the `playlists` array so the media groups
- * will be properly linked.
- *
- * @param {Object} clone The pathway clone object.
- */
-
- createClonedMediaGroups_(clone) {
- const id = clone.ID;
- const baseID = clone['BASE-ID'];
- const main = this.main;
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
- // If the media type doesn't exist, or there is already a clone, skip
- // to the next media type.
- if (!main.mediaGroups[mediaType] || main.mediaGroups[mediaType][id]) {
- return;
- }
- for (const groupKey in main.mediaGroups[mediaType]) {
- if (groupKey === baseID) {
- // Create the group.
- main.mediaGroups[mediaType][id] = {};
- } else {
- // There is no need to iterate over label keys in this case.
- continue;
- }
- for (const labelKey in main.mediaGroups[mediaType][groupKey]) {
- const oldMedia = main.mediaGroups[mediaType][groupKey][labelKey];
- main.mediaGroups[mediaType][id][labelKey] = _extends$1({}, oldMedia);
- const newMedia = main.mediaGroups[mediaType][id][labelKey]; // update URIs on the media
-
- const newUri = this.createCloneURI_(oldMedia.resolvedUri, clone);
- newMedia.resolvedUri = newUri;
- newMedia.uri = newUri; // Reset playlists in the new media group.
-
- newMedia.playlists = []; // Create new playlists in the newly cloned media group.
-
- oldMedia.playlists.forEach((p, i) => {
- const oldMediaPlaylist = main.playlists[p.id];
- const group = groupID(mediaType, id, labelKey);
- const newPlaylistID = createPlaylistID(id, group); // Check to see if it already exists
-
- if (oldMediaPlaylist && !main.playlists[newPlaylistID]) {
- const newMediaPlaylist = this.createClonePlaylist_(oldMediaPlaylist, newPlaylistID, clone);
- const newPlaylistUri = newMediaPlaylist.resolvedUri;
- main.playlists[newPlaylistID] = newMediaPlaylist;
- main.playlists[newPlaylistUri] = newMediaPlaylist;
- }
- newMedia.playlists[i] = this.createClonePlaylist_(p, newPlaylistID, clone);
- });
- }
- }
- });
- }
- /**
- * Using the original playlist to be cloned, and the pathway clone object
- * information, we create a new playlist.
- *
- * @param {Object} basePlaylist The original playlist to be cloned from.
- * @param {string} id The desired id of the newly cloned playlist.
- * @param {Object} clone The pathway clone object.
- * @param {Object} attributes An optional object to populate the `attributes` property in the playlist.
- *
- * @return {Object} The combined cloned playlist.
- */
-
- createClonePlaylist_(basePlaylist, id, clone, attributes) {
- const uri = this.createCloneURI_(basePlaylist.resolvedUri, clone);
- const newProps = {
- resolvedUri: uri,
- uri,
- id
- }; // Remove all segments from previous playlist in the clone.
-
- if (basePlaylist.segments) {
- newProps.segments = [];
- }
- if (attributes) {
- newProps.attributes = attributes;
- }
- return merge(basePlaylist, newProps);
- }
- /**
- * Generates an updated URI for a cloned pathway based on the original
- * pathway's URI and the paramaters from the pathway clone object in the
- * content steering server response.
- *
- * @param {string} baseUri URI to be updated in the cloned pathway.
- * @param {Object} clone The pathway clone object.
- *
- * @return {string} The updated URI for the cloned pathway.
- */
-
- createCloneURI_(baseURI, clone) {
- const uri = new URL(baseURI);
- uri.hostname = clone['URI-REPLACEMENT'].HOST;
- const params = clone['URI-REPLACEMENT'].PARAMS; // Add params to the cloned URL.
-
- for (const key of Object.keys(params)) {
- uri.searchParams.set(key, params[key]);
- }
- return uri.href;
- }
- /**
- * Helper function to create the attributes needed for the new clone.
- * This mainly adds the necessary media attributes.
- *
- * @param {string} id The pathway clone object ID.
- * @param {Object} oldAttributes The old attributes to compare to.
- * @return {Object} The new attributes to add to the playlist.
- */
-
- createCloneAttributes_(id, oldAttributes) {
- const attributes = {
- ['PATHWAY-ID']: id
- };
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(mediaType => {
- if (oldAttributes[mediaType]) {
- attributes[mediaType] = id;
- }
- });
- return attributes;
- }
- /**
- * Returns the key ID set from a playlist
- *
- * @param {playlist} playlist to fetch the key ID set from.
- * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
- */
-
- getKeyIdSet(playlist) {
- if (playlist.contentProtection) {
- const keyIds = new Set();
- for (const keysystem in playlist.contentProtection) {
- const keyId = playlist.contentProtection[keysystem].attributes.keyId;
- if (keyId) {
- keyIds.add(keyId.toLowerCase());
- }
- }
- return keyIds;
- }
- }
- }
-
- /**
- * @file xhr.js
- */
-
- const callbackWrapper = function (request, error, response, callback) {
- const reqResponse = request.responseType === 'arraybuffer' ? request.response : request.responseText;
- if (!error && reqResponse) {
- request.responseTime = Date.now();
- request.roundTripTime = request.responseTime - request.requestTime;
- request.bytesReceived = reqResponse.byteLength || reqResponse.length;
- if (!request.bandwidth) {
- request.bandwidth = Math.floor(request.bytesReceived / request.roundTripTime * 8 * 1000);
- }
- }
- if (response.headers) {
- request.responseHeaders = response.headers;
- } // videojs.xhr now uses a specific code on the error
- // object to signal that a request has timed out instead
- // of setting a boolean on the request object
-
- if (error && error.code === 'ETIMEDOUT') {
- request.timedout = true;
- } // videojs.xhr no longer considers status codes outside of 200 and 0
- // (for file uris) to be errors, but the old XHR did, so emulate that
- // behavior. Status 206 may be used in response to byterange requests.
-
- if (!error && !request.aborted && response.statusCode !== 200 && response.statusCode !== 206 && response.statusCode !== 0) {
- error = new Error('XHR Failed with a response of: ' + (request && (reqResponse || request.responseText)));
- }
- callback(error, request);
- };
- /**
- * Iterates over the request hooks Set and calls them in order
- *
- * @param {Set} hooks the hook Set to iterate over
- * @param {Object} options the request options to pass to the xhr wrapper
- * @return the callback hook function return value, the modified or new options Object.
- */
-
- const callAllRequestHooks = (requestSet, options) => {
- if (!requestSet || !requestSet.size) {
- return;
- }
- let newOptions = options;
- requestSet.forEach(requestCallback => {
- newOptions = requestCallback(newOptions);
- });
- return newOptions;
- };
- /**
- * Iterates over the response hooks Set and calls them in order.
- *
- * @param {Set} hooks the hook Set to iterate over
- * @param {Object} request the xhr request object
- * @param {Object} error the xhr error object
- * @param {Object} response the xhr response object
- */
-
- const callAllResponseHooks = (responseSet, request, error, response) => {
- if (!responseSet || !responseSet.size) {
- return;
- }
- responseSet.forEach(responseCallback => {
- responseCallback(request, error, response);
- });
- };
- const xhrFactory = function () {
- const xhr = function XhrFunction(options, callback) {
- // Add a default timeout
- options = merge({
- timeout: 45e3
- }, options); // Allow an optional user-specified function to modify the option
- // object before we construct the xhr request
- // TODO: Remove beforeRequest in the next major release.
-
- const beforeRequest = XhrFunction.beforeRequest || videojs.Vhs.xhr.beforeRequest; // onRequest and onResponse hooks as a Set, at either the player or global level.
- // TODO: new Set added here for beforeRequest alias. Remove this when beforeRequest is removed.
-
- const _requestCallbackSet = XhrFunction._requestCallbackSet || videojs.Vhs.xhr._requestCallbackSet || new Set();
- const _responseCallbackSet = XhrFunction._responseCallbackSet || videojs.Vhs.xhr._responseCallbackSet;
- if (beforeRequest && typeof beforeRequest === 'function') {
- videojs.log.warn('beforeRequest is deprecated, use onRequest instead.');
- _requestCallbackSet.add(beforeRequest);
- } // Use the standard videojs.xhr() method unless `videojs.Vhs.xhr` has been overriden
- // TODO: switch back to videojs.Vhs.xhr.name === 'XhrFunction' when we drop IE11
-
- const xhrMethod = videojs.Vhs.xhr.original === true ? videojs.xhr : videojs.Vhs.xhr; // call all registered onRequest hooks, assign new options.
-
- const beforeRequestOptions = callAllRequestHooks(_requestCallbackSet, options); // Remove the beforeRequest function from the hooks set so stale beforeRequest functions are not called.
-
- _requestCallbackSet.delete(beforeRequest); // xhrMethod will call XMLHttpRequest.open and XMLHttpRequest.send
-
- const request = xhrMethod(beforeRequestOptions || options, function (error, response) {
- // call all registered onResponse hooks
- callAllResponseHooks(_responseCallbackSet, request, error, response);
- return callbackWrapper(request, error, response, callback);
- });
- const originalAbort = request.abort;
- request.abort = function () {
- request.aborted = true;
- return originalAbort.apply(request, arguments);
- };
- request.uri = options.uri;
- request.requestTime = Date.now();
- return request;
- };
- xhr.original = true;
- return xhr;
- };
- /**
- * Turns segment byterange into a string suitable for use in
- * HTTP Range requests
- *
- * @param {Object} byterange - an object with two values defining the start and end
- * of a byte-range
- */
-
- const byterangeStr = function (byterange) {
- // `byterangeEnd` is one less than `offset + length` because the HTTP range
- // header uses inclusive ranges
- let byterangeEnd;
- const byterangeStart = byterange.offset;
- if (typeof byterange.offset === 'bigint' || typeof byterange.length === 'bigint') {
- byterangeEnd = window.BigInt(byterange.offset) + window.BigInt(byterange.length) - window.BigInt(1);
- } else {
- byterangeEnd = byterange.offset + byterange.length - 1;
- }
- return 'bytes=' + byterangeStart + '-' + byterangeEnd;
- };
- /**
- * Defines headers for use in the xhr request for a particular segment.
- *
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- */
-
- const segmentXhrHeaders = function (segment) {
- const headers = {};
- if (segment.byterange) {
- headers.Range = byterangeStr(segment.byterange);
- }
- return headers;
- };
-
- /**
- * @file bin-utils.js
- */
-
- /**
- * convert a TimeRange to text
- *
- * @param {TimeRange} range the timerange to use for conversion
- * @param {number} i the iterator on the range to convert
- * @return {string} the range in string format
- */
-
- const textRange = function (range, i) {
- return range.start(i) + '-' + range.end(i);
- };
- /**
- * format a number as hex string
- *
- * @param {number} e The number
- * @param {number} i the iterator
- * @return {string} the hex formatted number as a string
- */
-
- const formatHexString = function (e, i) {
- const value = e.toString(16);
- return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');
- };
- const formatAsciiString = function (e) {
- if (e >= 0x20 && e < 0x7e) {
- return String.fromCharCode(e);
- }
- return '.';
- };
- /**
- * Creates an object for sending to a web worker modifying properties that are TypedArrays
- * into a new object with seperated properties for the buffer, byteOffset, and byteLength.
- *
- * @param {Object} message
- * Object of properties and values to send to the web worker
- * @return {Object}
- * Modified message with TypedArray values expanded
- * @function createTransferableMessage
- */
-
- const createTransferableMessage = function (message) {
- const transferable = {};
- Object.keys(message).forEach(key => {
- const value = message[key];
- if (isArrayBufferView(value)) {
- transferable[key] = {
- bytes: value.buffer,
- byteOffset: value.byteOffset,
- byteLength: value.byteLength
- };
- } else {
- transferable[key] = value;
- }
- });
- return transferable;
- };
- /**
- * Returns a unique string identifier for a media initialization
- * segment.
- *
- * @param {Object} initSegment
- * the init segment object.
- *
- * @return {string} the generated init segment id
- */
-
- const initSegmentId = function (initSegment) {
- const byterange = initSegment.byterange || {
- length: Infinity,
- offset: 0
- };
- return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');
- };
- /**
- * Returns a unique string identifier for a media segment key.
- *
- * @param {Object} key the encryption key
- * @return {string} the unique id for the media segment key.
- */
-
- const segmentKeyId = function (key) {
- return key.resolvedUri;
- };
- /**
- * utils to help dump binary data to the console
- *
- * @param {Array|TypedArray} data
- * data to dump to a string
- *
- * @return {string} the data as a hex string.
- */
-
- const hexDump = data => {
- const bytes = Array.prototype.slice.call(data);
- const step = 16;
- let result = '';
- let hex;
- let ascii;
- for (let j = 0; j < bytes.length / step; j++) {
- hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');
- ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');
- result += hex + ' ' + ascii + '\n';
- }
- return result;
- };
- const tagDump = ({
- bytes
- }) => hexDump(bytes);
- const textRanges = ranges => {
- let result = '';
- let i;
- for (i = 0; i < ranges.length; i++) {
- result += textRange(ranges, i) + ' ';
- }
- return result;
- };
- var utils = /*#__PURE__*/Object.freeze({
- __proto__: null,
- createTransferableMessage: createTransferableMessage,
- initSegmentId: initSegmentId,
- segmentKeyId: segmentKeyId,
- hexDump: hexDump,
- tagDump: tagDump,
- textRanges: textRanges
- });
-
- // TODO handle fmp4 case where the timing info is accurate and doesn't involve transmux
- // 25% was arbitrarily chosen, and may need to be refined over time.
-
- const SEGMENT_END_FUDGE_PERCENT = 0.25;
- /**
- * Converts a player time (any time that can be gotten/set from player.currentTime(),
- * e.g., any time within player.seekable().start(0) to player.seekable().end(0)) to a
- * program time (any time referencing the real world (e.g., EXT-X-PROGRAM-DATE-TIME)).
- *
- * The containing segment is required as the EXT-X-PROGRAM-DATE-TIME serves as an "anchor
- * point" (a point where we have a mapping from program time to player time, with player
- * time being the post transmux start of the segment).
- *
- * For more details, see [this doc](../../docs/program-time-from-player-time.md).
- *
- * @param {number} playerTime the player time
- * @param {Object} segment the segment which contains the player time
- * @return {Date} program time
- */
-
- const playerTimeToProgramTime = (playerTime, segment) => {
- if (!segment.dateTimeObject) {
- // Can't convert without an "anchor point" for the program time (i.e., a time that can
- // be used to map the start of a segment with a real world time).
- return null;
- }
- const transmuxerPrependedSeconds = segment.videoTimingInfo.transmuxerPrependedSeconds;
- const transmuxedStart = segment.videoTimingInfo.transmuxedPresentationStart; // get the start of the content from before old content is prepended
-
- const startOfSegment = transmuxedStart + transmuxerPrependedSeconds;
- const offsetFromSegmentStart = playerTime - startOfSegment;
- return new Date(segment.dateTimeObject.getTime() + offsetFromSegmentStart * 1000);
- };
- const originalSegmentVideoDuration = videoTimingInfo => {
- return videoTimingInfo.transmuxedPresentationEnd - videoTimingInfo.transmuxedPresentationStart - videoTimingInfo.transmuxerPrependedSeconds;
- };
- /**
- * Finds a segment that contains the time requested given as an ISO-8601 string. The
- * returned segment might be an estimate or an accurate match.
- *
- * @param {string} programTime The ISO-8601 programTime to find a match for
- * @param {Object} playlist A playlist object to search within
- */
-
- const findSegmentForProgramTime = (programTime, playlist) => {
- // Assumptions:
- // - verifyProgramDateTimeTags has already been run
- // - live streams have been started
- let dateTimeObject;
- try {
- dateTimeObject = new Date(programTime);
- } catch (e) {
- return null;
- }
- if (!playlist || !playlist.segments || playlist.segments.length === 0) {
- return null;
- }
- let segment = playlist.segments[0];
- if (dateTimeObject < new Date(segment.dateTimeObject)) {
- // Requested time is before stream start.
- return null;
- }
- for (let i = 0; i < playlist.segments.length - 1; i++) {
- segment = playlist.segments[i];
- const nextSegmentStart = new Date(playlist.segments[i + 1].dateTimeObject);
- if (dateTimeObject < nextSegmentStart) {
- break;
- }
- }
- const lastSegment = playlist.segments[playlist.segments.length - 1];
- const lastSegmentStart = lastSegment.dateTimeObject;
- const lastSegmentDuration = lastSegment.videoTimingInfo ? originalSegmentVideoDuration(lastSegment.videoTimingInfo) : lastSegment.duration + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT;
- const lastSegmentEnd = new Date(lastSegmentStart.getTime() + lastSegmentDuration * 1000);
- if (dateTimeObject > lastSegmentEnd) {
- // Beyond the end of the stream, or our best guess of the end of the stream.
- return null;
- }
- if (dateTimeObject > new Date(lastSegmentStart)) {
- segment = lastSegment;
- }
- return {
- segment,
- estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : Playlist.duration(playlist, playlist.mediaSequence + playlist.segments.indexOf(segment)),
- // Although, given that all segments have accurate date time objects, the segment
- // selected should be accurate, unless the video has been transmuxed at some point
- // (determined by the presence of the videoTimingInfo object), the segment's "player
- // time" (the start time in the player) can't be considered accurate.
- type: segment.videoTimingInfo ? 'accurate' : 'estimate'
- };
- };
- /**
- * Finds a segment that contains the given player time(in seconds).
- *
- * @param {number} time The player time to find a match for
- * @param {Object} playlist A playlist object to search within
- */
-
- const findSegmentForPlayerTime = (time, playlist) => {
- // Assumptions:
- // - there will always be a segment.duration
- // - we can start from zero
- // - segments are in time order
- if (!playlist || !playlist.segments || playlist.segments.length === 0) {
- return null;
- }
- let segmentEnd = 0;
- let segment;
- for (let i = 0; i < playlist.segments.length; i++) {
- segment = playlist.segments[i]; // videoTimingInfo is set after the segment is downloaded and transmuxed, and
- // should contain the most accurate values we have for the segment's player times.
- //
- // Use the accurate transmuxedPresentationEnd value if it is available, otherwise fall
- // back to an estimate based on the manifest derived (inaccurate) segment.duration, to
- // calculate an end value.
-
- segmentEnd = segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationEnd : segmentEnd + segment.duration;
- if (time <= segmentEnd) {
- break;
- }
- }
- const lastSegment = playlist.segments[playlist.segments.length - 1];
- if (lastSegment.videoTimingInfo && lastSegment.videoTimingInfo.transmuxedPresentationEnd < time) {
- // The time requested is beyond the stream end.
- return null;
- }
- if (time > segmentEnd) {
- // The time is within or beyond the last segment.
- //
- // Check to see if the time is beyond a reasonable guess of the end of the stream.
- if (time > segmentEnd + lastSegment.duration * SEGMENT_END_FUDGE_PERCENT) {
- // Technically, because the duration value is only an estimate, the time may still
- // exist in the last segment, however, there isn't enough information to make even
- // a reasonable estimate.
- return null;
- }
- segment = lastSegment;
- }
- return {
- segment,
- estimatedStart: segment.videoTimingInfo ? segment.videoTimingInfo.transmuxedPresentationStart : segmentEnd - segment.duration,
- // Because videoTimingInfo is only set after transmux, it is the only way to get
- // accurate timing values.
- type: segment.videoTimingInfo ? 'accurate' : 'estimate'
- };
- };
- /**
- * Gives the offset of the comparisonTimestamp from the programTime timestamp in seconds.
- * If the offset returned is positive, the programTime occurs after the
- * comparisonTimestamp.
- * If the offset is negative, the programTime occurs before the comparisonTimestamp.
- *
- * @param {string} comparisonTimeStamp An ISO-8601 timestamp to compare against
- * @param {string} programTime The programTime as an ISO-8601 string
- * @return {number} offset
- */
-
- const getOffsetFromTimestamp = (comparisonTimeStamp, programTime) => {
- let segmentDateTime;
- let programDateTime;
- try {
- segmentDateTime = new Date(comparisonTimeStamp);
- programDateTime = new Date(programTime);
- } catch (e) {// TODO handle error
- }
- const segmentTimeEpoch = segmentDateTime.getTime();
- const programTimeEpoch = programDateTime.getTime();
- return (programTimeEpoch - segmentTimeEpoch) / 1000;
- };
- /**
- * Checks that all segments in this playlist have programDateTime tags.
- *
- * @param {Object} playlist A playlist object
- */
-
- const verifyProgramDateTimeTags = playlist => {
- if (!playlist.segments || playlist.segments.length === 0) {
- return false;
- }
- for (let i = 0; i < playlist.segments.length; i++) {
- const segment = playlist.segments[i];
- if (!segment.dateTimeObject) {
- return false;
- }
- }
- return true;
- };
- /**
- * Returns the programTime of the media given a playlist and a playerTime.
- * The playlist must have programDateTime tags for a programDateTime tag to be returned.
- * If the segments containing the time requested have not been buffered yet, an estimate
- * may be returned to the callback.
- *
- * @param {Object} args
- * @param {Object} args.playlist A playlist object to search within
- * @param {number} time A playerTime in seconds
- * @param {Function} callback(err, programTime)
- * @return {string} err.message A detailed error message
- * @return {Object} programTime
- * @return {number} programTime.mediaSeconds The streamTime in seconds
- * @return {string} programTime.programDateTime The programTime as an ISO-8601 String
- */
-
- const getProgramTime = ({
- playlist,
- time = undefined,
- callback
- }) => {
- if (!callback) {
- throw new Error('getProgramTime: callback must be provided');
- }
- if (!playlist || time === undefined) {
- return callback({
- message: 'getProgramTime: playlist and time must be provided'
- });
- }
- const matchedSegment = findSegmentForPlayerTime(time, playlist);
- if (!matchedSegment) {
- return callback({
- message: 'valid programTime was not found'
- });
- }
- if (matchedSegment.type === 'estimate') {
- return callback({
- message: 'Accurate programTime could not be determined.' + ' Please seek to e.seekTime and try again',
- seekTime: matchedSegment.estimatedStart
- });
- }
- const programTimeObject = {
- mediaSeconds: time
- };
- const programTime = playerTimeToProgramTime(time, matchedSegment.segment);
- if (programTime) {
- programTimeObject.programDateTime = programTime.toISOString();
- }
- return callback(null, programTimeObject);
- };
- /**
- * Seeks in the player to a time that matches the given programTime ISO-8601 string.
- *
- * @param {Object} args
- * @param {string} args.programTime A programTime to seek to as an ISO-8601 String
- * @param {Object} args.playlist A playlist to look within
- * @param {number} args.retryCount The number of times to try for an accurate seek. Default is 2.
- * @param {Function} args.seekTo A method to perform a seek
- * @param {boolean} args.pauseAfterSeek Whether to end in a paused state after seeking. Default is true.
- * @param {Object} args.tech The tech to seek on
- * @param {Function} args.callback(err, newTime) A callback to return the new time to
- * @return {string} err.message A detailed error message
- * @return {number} newTime The exact time that was seeked to in seconds
- */
-
- const seekToProgramTime = ({
- programTime,
- playlist,
- retryCount = 2,
- seekTo,
- pauseAfterSeek = true,
- tech,
- callback
- }) => {
- if (!callback) {
- throw new Error('seekToProgramTime: callback must be provided');
- }
- if (typeof programTime === 'undefined' || !playlist || !seekTo) {
- return callback({
- message: 'seekToProgramTime: programTime, seekTo and playlist must be provided'
- });
- }
- if (!playlist.endList && !tech.hasStarted_) {
- return callback({
- message: 'player must be playing a live stream to start buffering'
- });
- }
- if (!verifyProgramDateTimeTags(playlist)) {
- return callback({
- message: 'programDateTime tags must be provided in the manifest ' + playlist.resolvedUri
- });
- }
- const matchedSegment = findSegmentForProgramTime(programTime, playlist); // no match
-
- if (!matchedSegment) {
- return callback({
- message: `${programTime} was not found in the stream`
- });
- }
- const segment = matchedSegment.segment;
- const mediaOffset = getOffsetFromTimestamp(segment.dateTimeObject, programTime);
- if (matchedSegment.type === 'estimate') {
- // we've run out of retries
- if (retryCount === 0) {
- return callback({
- message: `${programTime} is not buffered yet. Try again`
- });
- }
- seekTo(matchedSegment.estimatedStart + mediaOffset);
- tech.one('seeked', () => {
- seekToProgramTime({
- programTime,
- playlist,
- retryCount: retryCount - 1,
- seekTo,
- pauseAfterSeek,
- tech,
- callback
- });
- });
- return;
- } // Since the segment.start value is determined from the buffered end or ending time
- // of the prior segment, the seekToTime doesn't need to account for any transmuxer
- // modifications.
-
- const seekToTime = segment.start + mediaOffset;
- const seekedCallback = () => {
- return callback(null, tech.currentTime());
- }; // listen for seeked event
-
- tech.one('seeked', seekedCallback); // pause before seeking as video.js will restore this state
-
- if (pauseAfterSeek) {
- tech.pause();
- }
- seekTo(seekToTime);
- };
-
- // which will only happen if the request is complete.
-
- const callbackOnCompleted = (request, cb) => {
- if (request.readyState === 4) {
- return cb();
- }
- return;
- };
- const containerRequest = (uri, xhr, cb) => {
- let bytes = [];
- let id3Offset;
- let finished = false;
- const endRequestAndCallback = function (err, req, type, _bytes) {
- req.abort();
- finished = true;
- return cb(err, req, type, _bytes);
- };
- const progressListener = function (error, request) {
- if (finished) {
- return;
- }
- if (error) {
- return endRequestAndCallback(error, request, '', bytes);
- } // grap the new part of content that was just downloaded
-
- const newPart = request.responseText.substring(bytes && bytes.byteLength || 0, request.responseText.length); // add that onto bytes
-
- bytes = concatTypedArrays(bytes, stringToBytes(newPart, true));
- id3Offset = id3Offset || getId3Offset(bytes); // we need at least 10 bytes to determine a type
- // or we need at least two bytes after an id3Offset
-
- if (bytes.length < 10 || id3Offset && bytes.length < id3Offset + 2) {
- return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
- }
- const type = detectContainerForBytes(bytes); // if this looks like a ts segment but we don't have enough data
- // to see the second sync byte, wait until we have enough data
- // before declaring it ts
-
- if (type === 'ts' && bytes.length < 188) {
- return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
- } // this may be an unsynced ts segment
- // wait for 376 bytes before detecting no container
-
- if (!type && bytes.length < 376) {
- return callbackOnCompleted(request, () => endRequestAndCallback(error, request, '', bytes));
- }
- return endRequestAndCallback(null, request, type, bytes);
- };
- const options = {
- uri,
- beforeSend(request) {
- // this forces the browser to pass the bytes to us unprocessed
- request.overrideMimeType('text/plain; charset=x-user-defined');
- request.addEventListener('progress', function ({
- total,
- loaded
- }) {
- return callbackWrapper(request, null, {
- statusCode: request.status
- }, progressListener);
- });
- }
- };
- const request = xhr(options, function (error, response) {
- return callbackWrapper(request, error, response, progressListener);
- });
- return request;
- };
- const {
- EventTarget
- } = videojs;
- const dashPlaylistUnchanged = function (a, b) {
- if (!isPlaylistUnchanged(a, b)) {
- return false;
- } // for dash the above check will often return true in scenarios where
- // the playlist actually has changed because mediaSequence isn't a
- // dash thing, and we often set it to 1. So if the playlists have the same amount
- // of segments we return true.
- // So for dash we need to make sure that the underlying segments are different.
- // if sidx changed then the playlists are different.
-
- if (a.sidx && b.sidx && (a.sidx.offset !== b.sidx.offset || a.sidx.length !== b.sidx.length)) {
- return false;
- } else if (!a.sidx && b.sidx || a.sidx && !b.sidx) {
- return false;
- } // one or the other does not have segments
- // there was a change.
-
- if (a.segments && !b.segments || !a.segments && b.segments) {
- return false;
- } // neither has segments nothing changed
-
- if (!a.segments && !b.segments) {
- return true;
- } // check segments themselves
-
- for (let i = 0; i < a.segments.length; i++) {
- const aSegment = a.segments[i];
- const bSegment = b.segments[i]; // if uris are different between segments there was a change
-
- if (aSegment.uri !== bSegment.uri) {
- return false;
- } // neither segment has a byterange, there will be no byterange change.
-
- if (!aSegment.byterange && !bSegment.byterange) {
- continue;
- }
- const aByterange = aSegment.byterange;
- const bByterange = bSegment.byterange; // if byterange only exists on one of the segments, there was a change.
-
- if (aByterange && !bByterange || !aByterange && bByterange) {
- return false;
- } // if both segments have byterange with different offsets, there was a change.
-
- if (aByterange.offset !== bByterange.offset || aByterange.length !== bByterange.length) {
- return false;
- }
- } // if everything was the same with segments, this is the same playlist.
-
- return true;
- };
- /**
- * Use the representation IDs from the mpd object to create groupIDs, the NAME is set to mandatory representation
- * ID in the parser. This allows for continuous playout across periods with the same representation IDs
- * (continuous periods as defined in DASH-IF 3.2.12). This is assumed in the mpd-parser as well. If we want to support
- * periods without continuous playback this function may need modification as well as the parser.
- */
-
- const dashGroupId = (type, group, label, playlist) => {
- // If the manifest somehow does not have an ID (non-dash compliant), use the label.
- const playlistId = playlist.attributes.NAME || label;
- return `placeholder-uri-${type}-${group}-${playlistId}`;
- };
- /**
- * Parses the main XML string and updates playlist URI references.
- *
- * @param {Object} config
- * Object of arguments
- * @param {string} config.mainXml
- * The mpd XML
- * @param {string} config.srcUrl
- * The mpd URL
- * @param {Date} config.clientOffset
- * A time difference between server and client
- * @param {Object} config.sidxMapping
- * SIDX mappings for moof/mdat URIs and byte ranges
- * @return {Object}
- * The parsed mpd manifest object
- */
-
- const parseMainXml = ({
- mainXml,
- srcUrl,
- clientOffset,
- sidxMapping,
- previousManifest
- }) => {
- const manifest = parse(mainXml, {
- manifestUri: srcUrl,
- clientOffset,
- sidxMapping,
- previousManifest
- });
- addPropertiesToMain(manifest, srcUrl, dashGroupId);
- return manifest;
- };
- /**
- * Removes any mediaGroup labels that no longer exist in the newMain
- *
- * @param {Object} update
- * The previous mpd object being updated
- * @param {Object} newMain
- * The new mpd object
- */
-
- const removeOldMediaGroupLabels = (update, newMain) => {
- forEachMediaGroup(update, (properties, type, group, label) => {
- if (!(label in newMain.mediaGroups[type][group])) {
- delete update.mediaGroups[type][group][label];
- }
- });
- };
- /**
- * Returns a new main manifest that is the result of merging an updated main manifest
- * into the original version.
- *
- * @param {Object} oldMain
- * The old parsed mpd object
- * @param {Object} newMain
- * The updated parsed mpd object
- * @return {Object}
- * A new object representing the original main manifest with the updated media
- * playlists merged in
- */
-
- const updateMain = (oldMain, newMain, sidxMapping) => {
- let noChanges = true;
- let update = merge(oldMain, {
- // These are top level properties that can be updated
- duration: newMain.duration,
- minimumUpdatePeriod: newMain.minimumUpdatePeriod,
- timelineStarts: newMain.timelineStarts
- }); // First update the playlists in playlist list
-
- for (let i = 0; i < newMain.playlists.length; i++) {
- const playlist = newMain.playlists[i];
- if (playlist.sidx) {
- const sidxKey = generateSidxKey(playlist.sidx); // add sidx segments to the playlist if we have all the sidx info already
-
- if (sidxMapping && sidxMapping[sidxKey] && sidxMapping[sidxKey].sidx) {
- addSidxSegmentsToPlaylist$1(playlist, sidxMapping[sidxKey].sidx, playlist.sidx.resolvedUri);
- }
- }
- const playlistUpdate = updateMain$1(update, playlist, dashPlaylistUnchanged);
- if (playlistUpdate) {
- update = playlistUpdate;
- noChanges = false;
- }
- } // Then update media group playlists
-
- forEachMediaGroup(newMain, (properties, type, group, label) => {
- if (properties.playlists && properties.playlists.length) {
- const id = properties.playlists[0].id;
- const playlistUpdate = updateMain$1(update, properties.playlists[0], dashPlaylistUnchanged);
- if (playlistUpdate) {
- update = playlistUpdate; // add new mediaGroup label if it doesn't exist and assign the new mediaGroup.
-
- if (!(label in update.mediaGroups[type][group])) {
- update.mediaGroups[type][group][label] = properties;
- } // update the playlist reference within media groups
-
- update.mediaGroups[type][group][label].playlists[0] = update.playlists[id];
- noChanges = false;
- }
- }
- }); // remove mediaGroup labels and references that no longer exist in the newMain
-
- removeOldMediaGroupLabels(update, newMain);
- if (newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {
- noChanges = false;
- }
- if (noChanges) {
- return null;
- }
- return update;
- }; // SIDX should be equivalent if the URI and byteranges of the SIDX match.
- // If the SIDXs have maps, the two maps should match,
- // both `a` and `b` missing SIDXs is considered matching.
- // If `a` or `b` but not both have a map, they aren't matching.
-
- const equivalentSidx = (a, b) => {
- const neitherMap = Boolean(!a.map && !b.map);
- const equivalentMap = neitherMap || Boolean(a.map && b.map && a.map.byterange.offset === b.map.byterange.offset && a.map.byterange.length === b.map.byterange.length);
- return equivalentMap && a.uri === b.uri && a.byterange.offset === b.byterange.offset && a.byterange.length === b.byterange.length;
- }; // exported for testing
-
- const compareSidxEntry = (playlists, oldSidxMapping) => {
- const newSidxMapping = {};
- for (const id in playlists) {
- const playlist = playlists[id];
- const currentSidxInfo = playlist.sidx;
- if (currentSidxInfo) {
- const key = generateSidxKey(currentSidxInfo);
- if (!oldSidxMapping[key]) {
- break;
- }
- const savedSidxInfo = oldSidxMapping[key].sidxInfo;
- if (equivalentSidx(savedSidxInfo, currentSidxInfo)) {
- newSidxMapping[key] = oldSidxMapping[key];
- }
- }
- }
- return newSidxMapping;
- };
- /**
- * A function that filters out changed items as they need to be requested separately.
- *
- * The method is exported for testing
- *
- * @param {Object} main the parsed mpd XML returned via mpd-parser
- * @param {Object} oldSidxMapping the SIDX to compare against
- */
-
- const filterChangedSidxMappings = (main, oldSidxMapping) => {
- const videoSidx = compareSidxEntry(main.playlists, oldSidxMapping);
- let mediaGroupSidx = videoSidx;
- forEachMediaGroup(main, (properties, mediaType, groupKey, labelKey) => {
- if (properties.playlists && properties.playlists.length) {
- const playlists = properties.playlists;
- mediaGroupSidx = merge(mediaGroupSidx, compareSidxEntry(playlists, oldSidxMapping));
- }
- });
- return mediaGroupSidx;
- };
- class DashPlaylistLoader extends EventTarget {
- // DashPlaylistLoader must accept either a src url or a playlist because subsequent
- // playlist loader setups from media groups will expect to be able to pass a playlist
- // (since there aren't external URLs to media playlists with DASH)
- constructor(srcUrlOrPlaylist, vhs, options = {}, mainPlaylistLoader) {
- super();
- this.mainPlaylistLoader_ = mainPlaylistLoader || this;
- if (!mainPlaylistLoader) {
- this.isMain_ = true;
- }
- const {
- withCredentials = false
- } = options;
- this.vhs_ = vhs;
- this.withCredentials = withCredentials;
- this.addMetadataToTextTrack = options.addMetadataToTextTrack;
- if (!srcUrlOrPlaylist) {
- throw new Error('A non-empty playlist URL or object is required');
- } // event naming?
-
- this.on('minimumUpdatePeriod', () => {
- this.refreshXml_();
- }); // live playlist staleness timeout
-
- this.on('mediaupdatetimeout', () => {
- this.refreshMedia_(this.media().id);
- });
- this.state = 'HAVE_NOTHING';
- this.loadedPlaylists_ = {};
- this.logger_ = logger('DashPlaylistLoader'); // initialize the loader state
- // The mainPlaylistLoader will be created with a string
-
- if (this.isMain_) {
- this.mainPlaylistLoader_.srcUrl = srcUrlOrPlaylist; // TODO: reset sidxMapping between period changes
- // once multi-period is refactored
-
- this.mainPlaylistLoader_.sidxMapping_ = {};
- } else {
- this.childPlaylist_ = srcUrlOrPlaylist;
- }
- }
- requestErrored_(err, request, startingState) {
- // disposed
- if (!this.request) {
- return true;
- } // pending request is cleared
-
- this.request = null;
- if (err) {
- // use the provided error object or create one
- // based on the request/response
- this.error = typeof err === 'object' && !(err instanceof Error) ? err : {
- status: request.status,
- message: 'DASH request error at URL: ' + request.uri,
- response: request.response,
- // MEDIA_ERR_NETWORK
- code: 2,
- metadata: err.metadata
- };
- if (startingState) {
- this.state = startingState;
- }
- this.trigger('error');
- return true;
- }
- }
- /**
- * Verify that the container of the sidx segment can be parsed
- * and if it can, get and parse that segment.
- */
-
- addSidxSegments_(playlist, startingState, cb) {
- const sidxKey = playlist.sidx && generateSidxKey(playlist.sidx); // playlist lacks sidx or sidx segments were added to this playlist already.
-
- if (!playlist.sidx || !sidxKey || this.mainPlaylistLoader_.sidxMapping_[sidxKey]) {
- // keep this function async
- this.mediaRequest_ = window.setTimeout(() => cb(false), 0);
- return;
- } // resolve the segment URL relative to the playlist
-
- const uri = resolveManifestRedirect(playlist.sidx.resolvedUri);
- const fin = (err, request) => {
- // TODO: add error metdata here once we create an error type in video.js
- if (this.requestErrored_(err, request, startingState)) {
- return;
- }
- const sidxMapping = this.mainPlaylistLoader_.sidxMapping_;
- let sidx;
- try {
- sidx = parseSidx_1(toUint8(request.response).subarray(8));
- } catch (e) {
- e.metadata = {
- errorType: videojs.Error.DashManifestSidxParsingError
- }; // sidx parsing failed.
-
- this.requestErrored_(e, request, startingState);
- return;
- }
- sidxMapping[sidxKey] = {
- sidxInfo: playlist.sidx,
- sidx
- };
- addSidxSegmentsToPlaylist$1(playlist, sidx, playlist.sidx.resolvedUri);
- return cb(true);
- };
- this.request = containerRequest(uri, this.vhs_.xhr, (err, request, container, bytes) => {
- if (err) {
- return fin(err, request);
- }
- if (!container || container !== 'mp4') {
- const sidxContainer = container || 'unknown';
- return fin({
- status: request.status,
- message: `Unsupported ${sidxContainer} container type for sidx segment at URL: ${uri}`,
- // response is just bytes in this case
- // but we really don't want to return that.
- response: '',
- playlist,
- internal: true,
- playlistExclusionDuration: Infinity,
- // MEDIA_ERR_NETWORK
- code: 2,
- metadata: {
- errorType: videojs.Error.UnsupportedSidxContainer,
- sidxContainer
- }
- }, request);
- } // if we already downloaded the sidx bytes in the container request, use them
-
- const {
- offset,
- length
- } = playlist.sidx.byterange;
- if (bytes.length >= length + offset) {
- return fin(err, {
- response: bytes.subarray(offset, offset + length),
- status: request.status,
- uri: request.uri
- });
- } // otherwise request sidx bytes
-
- this.request = this.vhs_.xhr({
- uri,
- responseType: 'arraybuffer',
- headers: segmentXhrHeaders({
- byterange: playlist.sidx.byterange
- })
- }, fin);
- });
- }
- dispose() {
- this.trigger('dispose');
- this.stopRequest();
- this.loadedPlaylists_ = {};
- window.clearTimeout(this.minimumUpdatePeriodTimeout_);
- window.clearTimeout(this.mediaRequest_);
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- this.mediaRequest_ = null;
- this.minimumUpdatePeriodTimeout_ = null;
- if (this.mainPlaylistLoader_.createMupOnMedia_) {
- this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);
- this.mainPlaylistLoader_.createMupOnMedia_ = null;
- }
- this.off();
- }
- hasPendingRequest() {
- return this.request || this.mediaRequest_;
- }
- stopRequest() {
- if (this.request) {
- const oldRequest = this.request;
- this.request = null;
- oldRequest.onreadystatechange = null;
- oldRequest.abort();
- }
- }
- media(playlist) {
- // getter
- if (!playlist) {
- return this.media_;
- } // setter
-
- if (this.state === 'HAVE_NOTHING') {
- throw new Error('Cannot switch media playlist from ' + this.state);
- }
- const startingState = this.state; // find the playlist object if the target playlist has been specified by URI
-
- if (typeof playlist === 'string') {
- if (!this.mainPlaylistLoader_.main.playlists[playlist]) {
- throw new Error('Unknown playlist URI: ' + playlist);
- }
- playlist = this.mainPlaylistLoader_.main.playlists[playlist];
- }
- const mediaChange = !this.media_ || playlist.id !== this.media_.id; // switch to previously loaded playlists immediately
-
- if (mediaChange && this.loadedPlaylists_[playlist.id] && this.loadedPlaylists_[playlist.id].endList) {
- this.state = 'HAVE_METADATA';
- this.media_ = playlist; // trigger media change if the active media has been updated
-
- if (mediaChange) {
- this.trigger('mediachanging');
- this.trigger('mediachange');
- }
- return;
- } // switching to the active playlist is a no-op
-
- if (!mediaChange) {
- return;
- } // switching from an already loaded playlist
-
- if (this.media_) {
- this.trigger('mediachanging');
- }
- this.addSidxSegments_(playlist, startingState, sidxChanged => {
- // everything is ready just continue to haveMetadata
- this.haveMetadata({
- startingState,
- playlist
- });
- });
- }
- haveMetadata({
- startingState,
- playlist
- }) {
- this.state = 'HAVE_METADATA';
- this.loadedPlaylists_[playlist.id] = playlist;
- this.mediaRequest_ = null; // This will trigger loadedplaylist
-
- this.refreshMedia_(playlist.id); // fire loadedmetadata the first time a media playlist is loaded
- // to resolve setup of media groups
-
- if (startingState === 'HAVE_MAIN_MANIFEST') {
- this.trigger('loadedmetadata');
- } else {
- // trigger media change if the active media has been updated
- this.trigger('mediachange');
- }
- }
- pause() {
- if (this.mainPlaylistLoader_.createMupOnMedia_) {
- this.off('loadedmetadata', this.mainPlaylistLoader_.createMupOnMedia_);
- this.mainPlaylistLoader_.createMupOnMedia_ = null;
- }
- this.stopRequest();
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- if (this.isMain_) {
- window.clearTimeout(this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_);
- this.mainPlaylistLoader_.minimumUpdatePeriodTimeout_ = null;
- }
- if (this.state === 'HAVE_NOTHING') {
- // If we pause the loader before any data has been retrieved, its as if we never
- // started, so reset to an unstarted state.
- this.started = false;
- }
- }
- load(isFinalRendition) {
- window.clearTimeout(this.mediaUpdateTimeout);
- this.mediaUpdateTimeout = null;
- const media = this.media();
- if (isFinalRendition) {
- const delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;
- this.mediaUpdateTimeout = window.setTimeout(() => this.load(), delay);
- return;
- } // because the playlists are internal to the manifest, load should either load the
- // main manifest, or do nothing but trigger an event
-
- if (!this.started) {
- this.start();
- return;
- }
- if (media && !media.endList) {
- // Check to see if this is the main loader and the MUP was cleared (this happens
- // when the loader was paused). `media` should be set at this point since one is always
- // set during `start()`.
- if (this.isMain_ && !this.minimumUpdatePeriodTimeout_) {
- // Trigger minimumUpdatePeriod to refresh the main manifest
- this.trigger('minimumUpdatePeriod'); // Since there was no prior minimumUpdatePeriodTimeout it should be recreated
-
- this.updateMinimumUpdatePeriodTimeout_();
- }
- this.trigger('mediaupdatetimeout');
- } else {
- this.trigger('loadedplaylist');
- }
- }
- start() {
- this.started = true; // We don't need to request the main manifest again
- // Call this asynchronously to match the xhr request behavior below
-
- if (!this.isMain_) {
- this.mediaRequest_ = window.setTimeout(() => this.haveMain_(), 0);
- return;
- }
- this.requestMain_((req, mainChanged) => {
- this.haveMain_();
- if (!this.hasPendingRequest() && !this.media_) {
- this.media(this.mainPlaylistLoader_.main.playlists[0]);
- }
- });
- }
- requestMain_(cb) {
- this.request = this.vhs_.xhr({
- uri: this.mainPlaylistLoader_.srcUrl,
- withCredentials: this.withCredentials,
- requestType: 'dash-manifest'
- }, (error, req) => {
- if (this.requestErrored_(error, req)) {
- if (this.state === 'HAVE_NOTHING') {
- this.started = false;
- }
- return;
- }
- const mainChanged = req.responseText !== this.mainPlaylistLoader_.mainXml_;
- this.mainPlaylistLoader_.mainXml_ = req.responseText;
- if (req.responseHeaders && req.responseHeaders.date) {
- this.mainLoaded_ = Date.parse(req.responseHeaders.date);
- } else {
- this.mainLoaded_ = Date.now();
- }
- this.mainPlaylistLoader_.srcUrl = resolveManifestRedirect(this.mainPlaylistLoader_.srcUrl, req);
- if (mainChanged) {
- this.handleMain_();
- this.syncClientServerClock_(() => {
- return cb(req, mainChanged);
- });
- return;
- }
- return cb(req, mainChanged);
- });
- }
- /**
- * Parses the main xml for UTCTiming node to sync the client clock to the server
- * clock. If the UTCTiming node requires a HEAD or GET request, that request is made.
- *
- * @param {Function} done
- * Function to call when clock sync has completed
- */
-
- syncClientServerClock_(done) {
- const utcTiming = parseUTCTiming(this.mainPlaylistLoader_.mainXml_); // No UTCTiming element found in the mpd. Use Date header from mpd request as the
- // server clock
-
- if (utcTiming === null) {
- this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();
- return done();
- }
- if (utcTiming.method === 'DIRECT') {
- this.mainPlaylistLoader_.clientOffset_ = utcTiming.value - Date.now();
- return done();
- }
- this.request = this.vhs_.xhr({
- uri: resolveUrl(this.mainPlaylistLoader_.srcUrl, utcTiming.value),
- method: utcTiming.method,
- withCredentials: this.withCredentials,
- requestType: 'dash-clock-sync'
- }, (error, req) => {
- // disposed
- if (!this.request) {
- return;
- }
- if (error) {
- // sync request failed, fall back to using date header from mpd
- // TODO: log warning
- this.mainPlaylistLoader_.clientOffset_ = this.mainLoaded_ - Date.now();
- return done();
- }
- let serverTime;
- if (utcTiming.method === 'HEAD') {
- if (!req.responseHeaders || !req.responseHeaders.date) {
- // expected date header not preset, fall back to using date header from mpd
- // TODO: log warning
- serverTime = this.mainLoaded_;
- } else {
- serverTime = Date.parse(req.responseHeaders.date);
- }
- } else {
- serverTime = Date.parse(req.responseText);
- }
- this.mainPlaylistLoader_.clientOffset_ = serverTime - Date.now();
- done();
- });
- }
- haveMain_() {
- this.state = 'HAVE_MAIN_MANIFEST';
- if (this.isMain_) {
- // We have the main playlist at this point, so
- // trigger this to allow PlaylistController
- // to make an initial playlist selection
- this.trigger('loadedplaylist');
- } else if (!this.media_) {
- // no media playlist was specifically selected so select
- // the one the child playlist loader was created with
- this.media(this.childPlaylist_);
- }
- }
- handleMain_() {
- // clear media request
- this.mediaRequest_ = null;
- const oldMain = this.mainPlaylistLoader_.main;
- let newMain = parseMainXml({
- mainXml: this.mainPlaylistLoader_.mainXml_,
- srcUrl: this.mainPlaylistLoader_.srcUrl,
- clientOffset: this.mainPlaylistLoader_.clientOffset_,
- sidxMapping: this.mainPlaylistLoader_.sidxMapping_,
- previousManifest: oldMain
- }); // if we have an old main to compare the new main against
-
- if (oldMain) {
- newMain = updateMain(oldMain, newMain, this.mainPlaylistLoader_.sidxMapping_);
- } // only update main if we have a new main
-
- this.mainPlaylistLoader_.main = newMain ? newMain : oldMain;
- const location = this.mainPlaylistLoader_.main.locations && this.mainPlaylistLoader_.main.locations[0];
- if (location && location !== this.mainPlaylistLoader_.srcUrl) {
- this.mainPlaylistLoader_.srcUrl = location;
- }
- if (!oldMain || newMain && newMain.minimumUpdatePeriod !== oldMain.minimumUpdatePeriod) {
- this.updateMinimumUpdatePeriodTimeout_();
- }
- this.addEventStreamToMetadataTrack_(newMain);
- return Boolean(newMain);
- }
- updateMinimumUpdatePeriodTimeout_() {
- const mpl = this.mainPlaylistLoader_; // cancel any pending creation of mup on media
- // a new one will be added if needed.
-
- if (mpl.createMupOnMedia_) {
- mpl.off('loadedmetadata', mpl.createMupOnMedia_);
- mpl.createMupOnMedia_ = null;
- } // clear any pending timeouts
-
- if (mpl.minimumUpdatePeriodTimeout_) {
- window.clearTimeout(mpl.minimumUpdatePeriodTimeout_);
- mpl.minimumUpdatePeriodTimeout_ = null;
- }
- let mup = mpl.main && mpl.main.minimumUpdatePeriod; // If the minimumUpdatePeriod has a value of 0, that indicates that the current
- // MPD has no future validity, so a new one will need to be acquired when new
- // media segments are to be made available. Thus, we use the target duration
- // in this case
-
- if (mup === 0) {
- if (mpl.media()) {
- mup = mpl.media().targetDuration * 1000;
- } else {
- mpl.createMupOnMedia_ = mpl.updateMinimumUpdatePeriodTimeout_;
- mpl.one('loadedmetadata', mpl.createMupOnMedia_);
- }
- } // if minimumUpdatePeriod is invalid or <= zero, which
- // can happen when a live video becomes VOD. skip timeout
- // creation.
-
- if (typeof mup !== 'number' || mup <= 0) {
- if (mup < 0) {
- this.logger_(`found invalid minimumUpdatePeriod of ${mup}, not setting a timeout`);
- }
- return;
- }
- this.createMUPTimeout_(mup);
- }
- createMUPTimeout_(mup) {
- const mpl = this.mainPlaylistLoader_;
- mpl.minimumUpdatePeriodTimeout_ = window.setTimeout(() => {
- mpl.minimumUpdatePeriodTimeout_ = null;
- mpl.trigger('minimumUpdatePeriod');
- mpl.createMUPTimeout_(mup);
- }, mup);
- }
- /**
- * Sends request to refresh the main xml and updates the parsed main manifest
- */
-
- refreshXml_() {
- this.requestMain_((req, mainChanged) => {
- if (!mainChanged) {
- return;
- }
- if (this.media_) {
- this.media_ = this.mainPlaylistLoader_.main.playlists[this.media_.id];
- } // This will filter out updated sidx info from the mapping
-
- this.mainPlaylistLoader_.sidxMapping_ = filterChangedSidxMappings(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.sidxMapping_);
- this.addSidxSegments_(this.media(), this.state, sidxChanged => {
- // TODO: do we need to reload the current playlist?
- this.refreshMedia_(this.media().id);
- });
- });
- }
- /**
- * Refreshes the media playlist by re-parsing the main xml and updating playlist
- * references. If this is an alternate loader, the updated parsed manifest is retrieved
- * from the main loader.
- */
-
- refreshMedia_(mediaID) {
- if (!mediaID) {
- throw new Error('refreshMedia_ must take a media id');
- } // for main we have to reparse the main xml
- // to re-create segments based on current timing values
- // which may change media. We only skip updating the main manifest
- // if this is the first time this.media_ is being set.
- // as main was just parsed in that case.
-
- if (this.media_ && this.isMain_) {
- this.handleMain_();
- }
- const playlists = this.mainPlaylistLoader_.main.playlists;
- const mediaChanged = !this.media_ || this.media_ !== playlists[mediaID];
- if (mediaChanged) {
- this.media_ = playlists[mediaID];
- } else {
- this.trigger('playlistunchanged');
- }
- if (!this.mediaUpdateTimeout) {
- const createMediaUpdateTimeout = () => {
- if (this.media().endList) {
- return;
- }
- this.mediaUpdateTimeout = window.setTimeout(() => {
- this.trigger('mediaupdatetimeout');
- createMediaUpdateTimeout();
- }, refreshDelay(this.media(), Boolean(mediaChanged)));
- };
- createMediaUpdateTimeout();
- }
- this.trigger('loadedplaylist');
- }
- /**
- * Takes eventstream data from a parsed DASH manifest and adds it to the metadata text track.
- *
- * @param {manifest} newMain the newly parsed manifest
- */
-
- addEventStreamToMetadataTrack_(newMain) {
- // Only add new event stream metadata if we have a new manifest.
- if (newMain && this.mainPlaylistLoader_.main.eventStream) {
- // convert EventStream to ID3-like data.
- const metadataArray = this.mainPlaylistLoader_.main.eventStream.map(eventStreamNode => {
- return {
- cueTime: eventStreamNode.start,
- frames: [{
- data: eventStreamNode.messageData
- }]
- };
- });
- this.addMetadataToTextTrack('EventStream', metadataArray, this.mainPlaylistLoader_.main.duration);
- }
- }
- /**
- * Returns the key ID set from a playlist
- *
- * @param {playlist} playlist to fetch the key ID set from.
- * @return a Set of 32 digit hex strings that represent the unique keyIds for that playlist.
- */
-
- getKeyIdSet(playlist) {
- if (playlist.contentProtection) {
- const keyIds = new Set();
- for (const keysystem in playlist.contentProtection) {
- const defaultKID = playlist.contentProtection[keysystem].attributes['cenc:default_KID'];
- if (defaultKID) {
- // DASH keyIds are separated by dashes.
- keyIds.add(defaultKID.replace(/-/g, '').toLowerCase());
- }
- }
- return keyIds;
- }
- }
- }
- var Config = {
- GOAL_BUFFER_LENGTH: 30,
- MAX_GOAL_BUFFER_LENGTH: 60,
- BACK_BUFFER_LENGTH: 30,
- GOAL_BUFFER_LENGTH_RATE: 1,
- // 0.5 MB/s
- INITIAL_BANDWIDTH: 4194304,
- // A fudge factor to apply to advertised playlist bitrates to account for
- // temporary flucations in client bandwidth
- BANDWIDTH_VARIANCE: 1.2,
- // How much of the buffer must be filled before we consider upswitching
- BUFFER_LOW_WATER_LINE: 0,
- MAX_BUFFER_LOW_WATER_LINE: 30,
- // TODO: Remove this when experimentalBufferBasedABR is removed
- EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE: 16,
- BUFFER_LOW_WATER_LINE_RATE: 1,
- // If the buffer is greater than the high water line, we won't switch down
- BUFFER_HIGH_WATER_LINE: 30
- };
- const stringToArrayBuffer = string => {
- const view = new Uint8Array(new ArrayBuffer(string.length));
- for (let i = 0; i < string.length; i++) {
- view[i] = string.charCodeAt(i);
- }
- return view.buffer;
- };
-
- /* global Blob, BlobBuilder, Worker */
- // unify worker interface
- const browserWorkerPolyFill = function (workerObj) {
- // node only supports on/off
- workerObj.on = workerObj.addEventListener;
- workerObj.off = workerObj.removeEventListener;
- return workerObj;
- };
- const createObjectURL = function (str) {
- try {
- return URL.createObjectURL(new Blob([str], {
- type: 'application/javascript'
- }));
- } catch (e) {
- const blob = new BlobBuilder();
- blob.append(str);
- return URL.createObjectURL(blob.getBlob());
- }
- };
- const factory = function (code) {
- return function () {
- const objectUrl = createObjectURL(code);
- const worker = browserWorkerPolyFill(new Worker(objectUrl));
- worker.objURL = objectUrl;
- const terminate = worker.terminate;
- worker.on = worker.addEventListener;
- worker.off = worker.removeEventListener;
- worker.terminate = function () {
- URL.revokeObjectURL(objectUrl);
- return terminate.call(this);
- };
- return worker;
- };
- };
- const transform = function (code) {
- return `var browserWorkerPolyFill = ${browserWorkerPolyFill.toString()};\n` + 'browserWorkerPolyFill(self);\n' + code;
- };
- const getWorkerString = function (fn) {
- return fn.toString().replace(/^function.+?{/, '').slice(0, -1);
- };
-
- /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
- const workerCode$1 = transform(getWorkerString(function () {
- var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * A lightweight readable stream implemention that handles event dispatching.
- * Objects that inherit from streams should call init in their constructors.
- */
-
- var Stream$8 = function () {
- this.init = function () {
- var listeners = {};
- /**
- * Add a listener for a specified event type.
- * @param type {string} the event name
- * @param listener {function} the callback to be invoked when an event of
- * the specified type occurs
- */
-
- this.on = function (type, listener) {
- if (!listeners[type]) {
- listeners[type] = [];
- }
- listeners[type] = listeners[type].concat(listener);
- };
- /**
- * Remove a listener for a specified event type.
- * @param type {string} the event name
- * @param listener {function} a function previously registered for this
- * type of event through `on`
- */
-
- this.off = function (type, listener) {
- var index;
- if (!listeners[type]) {
- return false;
- }
- index = listeners[type].indexOf(listener);
- listeners[type] = listeners[type].slice();
- listeners[type].splice(index, 1);
- return index > -1;
- };
- /**
- * Trigger an event of the specified type on this stream. Any additional
- * arguments to this function are passed as parameters to event listeners.
- * @param type {string} the event name
- */
-
- this.trigger = function (type) {
- var callbacks, i, length, args;
- callbacks = listeners[type];
- if (!callbacks) {
- return;
- } // Slicing the arguments on every invocation of this method
- // can add a significant amount of overhead. Avoid the
- // intermediate object creation for the common case of a
- // single callback argument
-
- if (arguments.length === 2) {
- length = callbacks.length;
- for (i = 0; i < length; ++i) {
- callbacks[i].call(this, arguments[1]);
- }
- } else {
- args = [];
- i = arguments.length;
- for (i = 1; i < arguments.length; ++i) {
- args.push(arguments[i]);
- }
- length = callbacks.length;
- for (i = 0; i < length; ++i) {
- callbacks[i].apply(this, args);
- }
- }
- };
- /**
- * Destroys the stream and cleans up.
- */
-
- this.dispose = function () {
- listeners = {};
- };
- };
- };
- /**
- * Forwards all `data` events on this stream to the destination stream. The
- * destination stream should provide a method `push` to receive the data
- * events as they arrive.
- * @param destination {stream} the stream that will receive all `data` events
- * @param autoFlush {boolean} if false, we will not call `flush` on the destination
- * when the current stream emits a 'done' event
- * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
- */
-
- Stream$8.prototype.pipe = function (destination) {
- this.on('data', function (data) {
- destination.push(data);
- });
- this.on('done', function (flushSource) {
- destination.flush(flushSource);
- });
- this.on('partialdone', function (flushSource) {
- destination.partialFlush(flushSource);
- });
- this.on('endedtimeline', function (flushSource) {
- destination.endTimeline(flushSource);
- });
- this.on('reset', function (flushSource) {
- destination.reset(flushSource);
- });
- return destination;
- }; // Default stream functions that are expected to be overridden to perform
- // actual work. These are provided by the prototype as a sort of no-op
- // implementation so that we don't have to check for their existence in the
- // `pipe` function above.
-
- Stream$8.prototype.push = function (data) {
- this.trigger('data', data);
- };
- Stream$8.prototype.flush = function (flushSource) {
- this.trigger('done', flushSource);
- };
- Stream$8.prototype.partialFlush = function (flushSource) {
- this.trigger('partialdone', flushSource);
- };
- Stream$8.prototype.endTimeline = function (flushSource) {
- this.trigger('endedtimeline', flushSource);
- };
- Stream$8.prototype.reset = function (flushSource) {
- this.trigger('reset', flushSource);
- };
- var stream = Stream$8;
- var MAX_UINT32$1 = Math.pow(2, 32);
- var getUint64$3 = function (uint8) {
- var dv = new DataView(uint8.buffer, uint8.byteOffset, uint8.byteLength);
- var value;
- if (dv.getBigUint64) {
- value = dv.getBigUint64(0);
- if (value < Number.MAX_SAFE_INTEGER) {
- return Number(value);
- }
- return value;
- }
- return dv.getUint32(0) * MAX_UINT32$1 + dv.getUint32(4);
- };
- var numbers = {
- getUint64: getUint64$3,
- MAX_UINT32: MAX_UINT32$1
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Functions that generate fragmented MP4s suitable for use with Media
- * Source Extensions.
- */
-
- var MAX_UINT32 = numbers.MAX_UINT32;
- var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd, trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex, trun$1, types, MAJOR_BRAND, MINOR_VERSION, AVC1_BRAND, VIDEO_HDLR, AUDIO_HDLR, HDLR_TYPES, VMHD, SMHD, DREF, STCO, STSC, STSZ, STTS; // pre-calculate constants
-
- (function () {
- var i;
- types = {
- avc1: [],
- // codingname
- avcC: [],
- btrt: [],
- dinf: [],
- dref: [],
- esds: [],
- ftyp: [],
- hdlr: [],
- mdat: [],
- mdhd: [],
- mdia: [],
- mfhd: [],
- minf: [],
- moof: [],
- moov: [],
- mp4a: [],
- // codingname
- mvex: [],
- mvhd: [],
- pasp: [],
- sdtp: [],
- smhd: [],
- stbl: [],
- stco: [],
- stsc: [],
- stsd: [],
- stsz: [],
- stts: [],
- styp: [],
- tfdt: [],
- tfhd: [],
- traf: [],
- trak: [],
- trun: [],
- trex: [],
- tkhd: [],
- vmhd: []
- }; // In environments where Uint8Array is undefined (e.g., IE8), skip set up so that we
- // don't throw an error
-
- if (typeof Uint8Array === 'undefined') {
- return;
- }
- for (i in types) {
- if (types.hasOwnProperty(i)) {
- types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];
- }
- }
- MAJOR_BRAND = new Uint8Array(['i'.charCodeAt(0), 's'.charCodeAt(0), 'o'.charCodeAt(0), 'm'.charCodeAt(0)]);
- AVC1_BRAND = new Uint8Array(['a'.charCodeAt(0), 'v'.charCodeAt(0), 'c'.charCodeAt(0), '1'.charCodeAt(0)]);
- MINOR_VERSION = new Uint8Array([0, 0, 0, 1]);
- VIDEO_HDLR = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0x76, 0x69, 0x64, 0x65,
- // handler_type: 'vide'
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'
- ]);
-
- AUDIO_HDLR = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0x73, 0x6f, 0x75, 0x6e,
- // handler_type: 'soun'
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'
- ]);
-
- HDLR_TYPES = {
- video: VIDEO_HDLR,
- audio: AUDIO_HDLR
- };
- DREF = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x01,
- // entry_count
- 0x00, 0x00, 0x00, 0x0c,
- // entry_size
- 0x75, 0x72, 0x6c, 0x20,
- // 'url' type
- 0x00,
- // version 0
- 0x00, 0x00, 0x01 // entry_flags
- ]);
-
- SMHD = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00,
- // balance, 0 means centered
- 0x00, 0x00 // reserved
- ]);
-
- STCO = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00 // entry_count
- ]);
-
- STSC = STCO;
- STSZ = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // sample_size
- 0x00, 0x00, 0x00, 0x00 // sample_count
- ]);
-
- STTS = STCO;
- VMHD = new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x01,
- // flags
- 0x00, 0x00,
- // graphicsmode
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor
- ]);
- })();
-
- box = function (type) {
- var payload = [],
- size = 0,
- i,
- result,
- view;
- for (i = 1; i < arguments.length; i++) {
- payload.push(arguments[i]);
- }
- i = payload.length; // calculate the total size we need to allocate
-
- while (i--) {
- size += payload[i].byteLength;
- }
- result = new Uint8Array(size + 8);
- view = new DataView(result.buffer, result.byteOffset, result.byteLength);
- view.setUint32(0, result.byteLength);
- result.set(type, 4); // copy the payload into the result
-
- for (i = 0, size = 8; i < payload.length; i++) {
- result.set(payload[i], size);
- size += payload[i].byteLength;
- }
- return result;
- };
- dinf = function () {
- return box(types.dinf, box(types.dref, DREF));
- };
- esds = function (track) {
- return box(types.esds, new Uint8Array([0x00,
- // version
- 0x00, 0x00, 0x00,
- // flags
- // ES_Descriptor
- 0x03,
- // tag, ES_DescrTag
- 0x19,
- // length
- 0x00, 0x00,
- // ES_ID
- 0x00,
- // streamDependenceFlag, URL_flag, reserved, streamPriority
- // DecoderConfigDescriptor
- 0x04,
- // tag, DecoderConfigDescrTag
- 0x11,
- // length
- 0x40,
- // object type
- 0x15,
- // streamType
- 0x00, 0x06, 0x00,
- // bufferSizeDB
- 0x00, 0x00, 0xda, 0xc0,
- // maxBitrate
- 0x00, 0x00, 0xda, 0xc0,
- // avgBitrate
- // DecoderSpecificInfo
- 0x05,
- // tag, DecoderSpecificInfoTag
- 0x02,
- // length
- // ISO/IEC 14496-3, AudioSpecificConfig
- // for samplingFrequencyIndex see ISO/IEC 13818-7:2006, 8.1.3.2.2, Table 35
- track.audioobjecttype << 3 | track.samplingfrequencyindex >>> 1, track.samplingfrequencyindex << 7 | track.channelcount << 3, 0x06, 0x01, 0x02 // GASpecificConfig
- ]));
- };
-
- ftyp = function () {
- return box(types.ftyp, MAJOR_BRAND, MINOR_VERSION, MAJOR_BRAND, AVC1_BRAND);
- };
- hdlr = function (type) {
- return box(types.hdlr, HDLR_TYPES[type]);
- };
- mdat = function (data) {
- return box(types.mdat, data);
- };
- mdhd = function (track) {
- var result = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x02,
- // creation_time
- 0x00, 0x00, 0x00, 0x03,
- // modification_time
- 0x00, 0x01, 0x5f, 0x90,
- // timescale, 90,000 "ticks" per second
- track.duration >>> 24 & 0xFF, track.duration >>> 16 & 0xFF, track.duration >>> 8 & 0xFF, track.duration & 0xFF,
- // duration
- 0x55, 0xc4,
- // 'und' language (undetermined)
- 0x00, 0x00]); // Use the sample rate from the track metadata, when it is
- // defined. The sample rate can be parsed out of an ADTS header, for
- // instance.
-
- if (track.samplerate) {
- result[12] = track.samplerate >>> 24 & 0xFF;
- result[13] = track.samplerate >>> 16 & 0xFF;
- result[14] = track.samplerate >>> 8 & 0xFF;
- result[15] = track.samplerate & 0xFF;
- }
- return box(types.mdhd, result);
- };
- mdia = function (track) {
- return box(types.mdia, mdhd(track), hdlr(track.type), minf(track));
- };
- mfhd = function (sequenceNumber) {
- return box(types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00,
- // flags
- (sequenceNumber & 0xFF000000) >> 24, (sequenceNumber & 0xFF0000) >> 16, (sequenceNumber & 0xFF00) >> 8, sequenceNumber & 0xFF // sequence_number
- ]));
- };
-
- minf = function (track) {
- return box(types.minf, track.type === 'video' ? box(types.vmhd, VMHD) : box(types.smhd, SMHD), dinf(), stbl(track));
- };
- moof = function (sequenceNumber, tracks) {
- var trackFragments = [],
- i = tracks.length; // build traf boxes for each track fragment
-
- while (i--) {
- trackFragments[i] = traf(tracks[i]);
- }
- return box.apply(null, [types.moof, mfhd(sequenceNumber)].concat(trackFragments));
- };
- /**
- * Returns a movie box.
- * @param tracks {array} the tracks associated with this movie
- * @see ISO/IEC 14496-12:2012(E), section 8.2.1
- */
-
- moov = function (tracks) {
- var i = tracks.length,
- boxes = [];
- while (i--) {
- boxes[i] = trak(tracks[i]);
- }
- return box.apply(null, [types.moov, mvhd(0xffffffff)].concat(boxes).concat(mvex(tracks)));
- };
- mvex = function (tracks) {
- var i = tracks.length,
- boxes = [];
- while (i--) {
- boxes[i] = trex(tracks[i]);
- }
- return box.apply(null, [types.mvex].concat(boxes));
- };
- mvhd = function (duration) {
- var bytes = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x01,
- // creation_time
- 0x00, 0x00, 0x00, 0x02,
- // modification_time
- 0x00, 0x01, 0x5f, 0x90,
- // timescale, 90,000 "ticks" per second
- (duration & 0xFF000000) >> 24, (duration & 0xFF0000) >> 16, (duration & 0xFF00) >> 8, duration & 0xFF,
- // duration
- 0x00, 0x01, 0x00, 0x00,
- // 1.0 rate
- 0x01, 0x00,
- // 1.0 volume
- 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
- // transformation: unity matrix
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- 0xff, 0xff, 0xff, 0xff // next_track_ID
- ]);
-
- return box(types.mvhd, bytes);
- };
- sdtp = function (track) {
- var samples = track.samples || [],
- bytes = new Uint8Array(4 + samples.length),
- flags,
- i; // leave the full box header (4 bytes) all zero
- // write the sample table
-
- for (i = 0; i < samples.length; i++) {
- flags = samples[i].flags;
- bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;
- }
- return box(types.sdtp, bytes);
- };
- stbl = function (track) {
- return box(types.stbl, stsd(track), box(types.stts, STTS), box(types.stsc, STSC), box(types.stsz, STSZ), box(types.stco, STCO));
- };
- (function () {
- var videoSample, audioSample;
- stsd = function (track) {
- return box(types.stsd, new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- 0x00, 0x00, 0x00, 0x01]), track.type === 'video' ? videoSample(track) : audioSample(track));
- };
- videoSample = function (track) {
- var sps = track.sps || [],
- pps = track.pps || [],
- sequenceParameterSets = [],
- pictureParameterSets = [],
- i,
- avc1Box; // assemble the SPSs
-
- for (i = 0; i < sps.length; i++) {
- sequenceParameterSets.push((sps[i].byteLength & 0xFF00) >>> 8);
- sequenceParameterSets.push(sps[i].byteLength & 0xFF); // sequenceParameterSetLength
-
- sequenceParameterSets = sequenceParameterSets.concat(Array.prototype.slice.call(sps[i])); // SPS
- } // assemble the PPSs
-
- for (i = 0; i < pps.length; i++) {
- pictureParameterSets.push((pps[i].byteLength & 0xFF00) >>> 8);
- pictureParameterSets.push(pps[i].byteLength & 0xFF);
- pictureParameterSets = pictureParameterSets.concat(Array.prototype.slice.call(pps[i]));
- }
- avc1Box = [types.avc1, new Uint8Array([0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // data_reference_index
- 0x00, 0x00,
- // pre_defined
- 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // pre_defined
- (track.width & 0xff00) >> 8, track.width & 0xff,
- // width
- (track.height & 0xff00) >> 8, track.height & 0xff,
- // height
- 0x00, 0x48, 0x00, 0x00,
- // horizresolution
- 0x00, 0x48, 0x00, 0x00,
- // vertresolution
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // frame_count
- 0x13, 0x76, 0x69, 0x64, 0x65, 0x6f, 0x6a, 0x73, 0x2d, 0x63, 0x6f, 0x6e, 0x74, 0x72, 0x69, 0x62, 0x2d, 0x68, 0x6c, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // compressorname
- 0x00, 0x18,
- // depth = 24
- 0x11, 0x11 // pre_defined = -1
- ]), box(types.avcC, new Uint8Array([0x01,
- // configurationVersion
- track.profileIdc,
- // AVCProfileIndication
- track.profileCompatibility,
- // profile_compatibility
- track.levelIdc,
- // AVCLevelIndication
- 0xff // lengthSizeMinusOne, hard-coded to 4 bytes
- ].concat([sps.length],
- // numOfSequenceParameterSets
- sequenceParameterSets,
- // "SPS"
- [pps.length],
- // numOfPictureParameterSets
- pictureParameterSets // "PPS"
- ))), box(types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80,
- // bufferSizeDB
- 0x00, 0x2d, 0xc6, 0xc0,
- // maxBitrate
- 0x00, 0x2d, 0xc6, 0xc0 // avgBitrate
- ]))];
-
- if (track.sarRatio) {
- var hSpacing = track.sarRatio[0],
- vSpacing = track.sarRatio[1];
- avc1Box.push(box(types.pasp, new Uint8Array([(hSpacing & 0xFF000000) >> 24, (hSpacing & 0xFF0000) >> 16, (hSpacing & 0xFF00) >> 8, hSpacing & 0xFF, (vSpacing & 0xFF000000) >> 24, (vSpacing & 0xFF0000) >> 16, (vSpacing & 0xFF00) >> 8, vSpacing & 0xFF])));
- }
- return box.apply(null, avc1Box);
- };
- audioSample = function (track) {
- return box(types.mp4a, new Uint8Array([
- // SampleEntry, ISO/IEC 14496-12
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x01,
- // data_reference_index
- // AudioSampleEntry, ISO/IEC 14496-12
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- (track.channelcount & 0xff00) >> 8, track.channelcount & 0xff,
- // channelcount
- (track.samplesize & 0xff00) >> 8, track.samplesize & 0xff,
- // samplesize
- 0x00, 0x00,
- // pre_defined
- 0x00, 0x00,
- // reserved
- (track.samplerate & 0xff00) >> 8, track.samplerate & 0xff, 0x00, 0x00 // samplerate, 16.16
- // MP4AudioSampleEntry, ISO/IEC 14496-14
- ]), esds(track));
- };
- })();
- tkhd = function (track) {
- var result = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x07,
- // flags
- 0x00, 0x00, 0x00, 0x00,
- // creation_time
- 0x00, 0x00, 0x00, 0x00,
- // modification_time
- (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
- // track_ID
- 0x00, 0x00, 0x00, 0x00,
- // reserved
- (track.duration & 0xFF000000) >> 24, (track.duration & 0xFF0000) >> 16, (track.duration & 0xFF00) >> 8, track.duration & 0xFF,
- // duration
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- // reserved
- 0x00, 0x00,
- // layer
- 0x00, 0x00,
- // alternate_group
- 0x01, 0x00,
- // non-audio track volume
- 0x00, 0x00,
- // reserved
- 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00,
- // transformation: unity matrix
- (track.width & 0xFF00) >> 8, track.width & 0xFF, 0x00, 0x00,
- // width
- (track.height & 0xFF00) >> 8, track.height & 0xFF, 0x00, 0x00 // height
- ]);
-
- return box(types.tkhd, result);
- };
- /**
- * Generate a track fragment (traf) box. A traf box collects metadata
- * about tracks in a movie fragment (moof) box.
- */
-
- traf = function (track) {
- var trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable, dataOffset, upperWordBaseMediaDecodeTime, lowerWordBaseMediaDecodeTime;
- trackFragmentHeader = box(types.tfhd, new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x3a,
- // flags
- (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
- // track_ID
- 0x00, 0x00, 0x00, 0x01,
- // sample_description_index
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_duration
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_size
- 0x00, 0x00, 0x00, 0x00 // default_sample_flags
- ]));
-
- upperWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime / MAX_UINT32);
- lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % MAX_UINT32);
- trackFragmentDecodeTime = box(types.tfdt, new Uint8Array([0x01,
- // version 1
- 0x00, 0x00, 0x00,
- // flags
- // baseMediaDecodeTime
- upperWordBaseMediaDecodeTime >>> 24 & 0xFF, upperWordBaseMediaDecodeTime >>> 16 & 0xFF, upperWordBaseMediaDecodeTime >>> 8 & 0xFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >>> 24 & 0xFF, lowerWordBaseMediaDecodeTime >>> 16 & 0xFF, lowerWordBaseMediaDecodeTime >>> 8 & 0xFF, lowerWordBaseMediaDecodeTime & 0xFF])); // the data offset specifies the number of bytes from the start of
- // the containing moof to the first payload byte of the associated
- // mdat
-
- dataOffset = 32 +
- // tfhd
- 20 +
- // tfdt
- 8 +
- // traf header
- 16 +
- // mfhd
- 8 +
- // moof header
- 8; // mdat header
- // audio tracks require less metadata
-
- if (track.type === 'audio') {
- trackFragmentRun = trun$1(track, dataOffset);
- return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun);
- } // video tracks should contain an independent and disposable samples
- // box (sdtp)
- // generate one and adjust offsets to match
-
- sampleDependencyTable = sdtp(track);
- trackFragmentRun = trun$1(track, sampleDependencyTable.length + dataOffset);
- return box(types.traf, trackFragmentHeader, trackFragmentDecodeTime, trackFragmentRun, sampleDependencyTable);
- };
- /**
- * Generate a track box.
- * @param track {object} a track definition
- * @return {Uint8Array} the track box
- */
-
- trak = function (track) {
- track.duration = track.duration || 0xffffffff;
- return box(types.trak, tkhd(track), mdia(track));
- };
- trex = function (track) {
- var result = new Uint8Array([0x00,
- // version 0
- 0x00, 0x00, 0x00,
- // flags
- (track.id & 0xFF000000) >> 24, (track.id & 0xFF0000) >> 16, (track.id & 0xFF00) >> 8, track.id & 0xFF,
- // track_ID
- 0x00, 0x00, 0x00, 0x01,
- // default_sample_description_index
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_duration
- 0x00, 0x00, 0x00, 0x00,
- // default_sample_size
- 0x00, 0x01, 0x00, 0x01 // default_sample_flags
- ]); // the last two bytes of default_sample_flags is the sample
- // degradation priority, a hint about the importance of this sample
- // relative to others. Lower the degradation priority for all sample
- // types other than video.
-
- if (track.type !== 'video') {
- result[result.length - 1] = 0x00;
- }
- return box(types.trex, result);
- };
- (function () {
- var audioTrun, videoTrun, trunHeader; // This method assumes all samples are uniform. That is, if a
- // duration is present for the first sample, it will be present for
- // all subsequent samples.
- // see ISO/IEC 14496-12:2012, Section 8.8.8.1
-
- trunHeader = function (samples, offset) {
- var durationPresent = 0,
- sizePresent = 0,
- flagsPresent = 0,
- compositionTimeOffset = 0; // trun flag constants
-
- if (samples.length) {
- if (samples[0].duration !== undefined) {
- durationPresent = 0x1;
- }
- if (samples[0].size !== undefined) {
- sizePresent = 0x2;
- }
- if (samples[0].flags !== undefined) {
- flagsPresent = 0x4;
- }
- if (samples[0].compositionTimeOffset !== undefined) {
- compositionTimeOffset = 0x8;
- }
- }
- return [0x00,
- // version 0
- 0x00, durationPresent | sizePresent | flagsPresent | compositionTimeOffset, 0x01,
- // flags
- (samples.length & 0xFF000000) >>> 24, (samples.length & 0xFF0000) >>> 16, (samples.length & 0xFF00) >>> 8, samples.length & 0xFF,
- // sample_count
- (offset & 0xFF000000) >>> 24, (offset & 0xFF0000) >>> 16, (offset & 0xFF00) >>> 8, offset & 0xFF // data_offset
- ];
- };
-
- videoTrun = function (track, offset) {
- var bytesOffest, bytes, header, samples, sample, i;
- samples = track.samples || [];
- offset += 8 + 12 + 16 * samples.length;
- header = trunHeader(samples, offset);
- bytes = new Uint8Array(header.length + samples.length * 16);
- bytes.set(header);
- bytesOffest = header.length;
- for (i = 0; i < samples.length; i++) {
- sample = samples[i];
- bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;
- bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;
- bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;
- bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration
-
- bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;
- bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;
- bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;
- bytes[bytesOffest++] = sample.size & 0xFF; // sample_size
-
- bytes[bytesOffest++] = sample.flags.isLeading << 2 | sample.flags.dependsOn;
- bytes[bytesOffest++] = sample.flags.isDependedOn << 6 | sample.flags.hasRedundancy << 4 | sample.flags.paddingValue << 1 | sample.flags.isNonSyncSample;
- bytes[bytesOffest++] = sample.flags.degradationPriority & 0xF0 << 8;
- bytes[bytesOffest++] = sample.flags.degradationPriority & 0x0F; // sample_flags
-
- bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF000000) >>> 24;
- bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF0000) >>> 16;
- bytes[bytesOffest++] = (sample.compositionTimeOffset & 0xFF00) >>> 8;
- bytes[bytesOffest++] = sample.compositionTimeOffset & 0xFF; // sample_composition_time_offset
- }
-
- return box(types.trun, bytes);
- };
- audioTrun = function (track, offset) {
- var bytes, bytesOffest, header, samples, sample, i;
- samples = track.samples || [];
- offset += 8 + 12 + 8 * samples.length;
- header = trunHeader(samples, offset);
- bytes = new Uint8Array(header.length + samples.length * 8);
- bytes.set(header);
- bytesOffest = header.length;
- for (i = 0; i < samples.length; i++) {
- sample = samples[i];
- bytes[bytesOffest++] = (sample.duration & 0xFF000000) >>> 24;
- bytes[bytesOffest++] = (sample.duration & 0xFF0000) >>> 16;
- bytes[bytesOffest++] = (sample.duration & 0xFF00) >>> 8;
- bytes[bytesOffest++] = sample.duration & 0xFF; // sample_duration
-
- bytes[bytesOffest++] = (sample.size & 0xFF000000) >>> 24;
- bytes[bytesOffest++] = (sample.size & 0xFF0000) >>> 16;
- bytes[bytesOffest++] = (sample.size & 0xFF00) >>> 8;
- bytes[bytesOffest++] = sample.size & 0xFF; // sample_size
- }
-
- return box(types.trun, bytes);
- };
- trun$1 = function (track, offset) {
- if (track.type === 'audio') {
- return audioTrun(track, offset);
- }
- return videoTrun(track, offset);
- };
- })();
- var mp4Generator = {
- ftyp: ftyp,
- mdat: mdat,
- moof: moof,
- moov: moov,
- initSegment: function (tracks) {
- var fileType = ftyp(),
- movie = moov(tracks),
- result;
- result = new Uint8Array(fileType.byteLength + movie.byteLength);
- result.set(fileType);
- result.set(movie, fileType.byteLength);
- return result;
- }
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
- // composed of the nal units that make up that frame
- // Also keep track of cummulative data about the frame from the nal units such
- // as the frame duration, starting pts, etc.
-
- var groupNalsIntoFrames = function (nalUnits) {
- var i,
- currentNal,
- currentFrame = [],
- frames = []; // TODO added for LHLS, make sure this is OK
-
- frames.byteLength = 0;
- frames.nalCount = 0;
- frames.duration = 0;
- currentFrame.byteLength = 0;
- for (i = 0; i < nalUnits.length; i++) {
- currentNal = nalUnits[i]; // Split on 'aud'-type nal units
-
- if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {
- // Since the very first nal unit is expected to be an AUD
- // only push to the frames array when currentFrame is not empty
- if (currentFrame.length) {
- currentFrame.duration = currentNal.dts - currentFrame.dts; // TODO added for LHLS, make sure this is OK
-
- frames.byteLength += currentFrame.byteLength;
- frames.nalCount += currentFrame.length;
- frames.duration += currentFrame.duration;
- frames.push(currentFrame);
- }
- currentFrame = [currentNal];
- currentFrame.byteLength = currentNal.data.byteLength;
- currentFrame.pts = currentNal.pts;
- currentFrame.dts = currentNal.dts;
- } else {
- // Specifically flag key frames for ease of use later
- if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {
- currentFrame.keyFrame = true;
- }
- currentFrame.duration = currentNal.dts - currentFrame.dts;
- currentFrame.byteLength += currentNal.data.byteLength;
- currentFrame.push(currentNal);
- }
- } // For the last frame, use the duration of the previous frame if we
- // have nothing better to go on
-
- if (frames.length && (!currentFrame.duration || currentFrame.duration <= 0)) {
- currentFrame.duration = frames[frames.length - 1].duration;
- } // Push the final frame
- // TODO added for LHLS, make sure this is OK
-
- frames.byteLength += currentFrame.byteLength;
- frames.nalCount += currentFrame.length;
- frames.duration += currentFrame.duration;
- frames.push(currentFrame);
- return frames;
- }; // Convert an array of frames into an array of Gop with each Gop being composed
- // of the frames that make up that Gop
- // Also keep track of cummulative data about the Gop from the frames such as the
- // Gop duration, starting pts, etc.
-
- var groupFramesIntoGops = function (frames) {
- var i,
- currentFrame,
- currentGop = [],
- gops = []; // We must pre-set some of the values on the Gop since we
- // keep running totals of these values
-
- currentGop.byteLength = 0;
- currentGop.nalCount = 0;
- currentGop.duration = 0;
- currentGop.pts = frames[0].pts;
- currentGop.dts = frames[0].dts; // store some metadata about all the Gops
-
- gops.byteLength = 0;
- gops.nalCount = 0;
- gops.duration = 0;
- gops.pts = frames[0].pts;
- gops.dts = frames[0].dts;
- for (i = 0; i < frames.length; i++) {
- currentFrame = frames[i];
- if (currentFrame.keyFrame) {
- // Since the very first frame is expected to be an keyframe
- // only push to the gops array when currentGop is not empty
- if (currentGop.length) {
- gops.push(currentGop);
- gops.byteLength += currentGop.byteLength;
- gops.nalCount += currentGop.nalCount;
- gops.duration += currentGop.duration;
- }
- currentGop = [currentFrame];
- currentGop.nalCount = currentFrame.length;
- currentGop.byteLength = currentFrame.byteLength;
- currentGop.pts = currentFrame.pts;
- currentGop.dts = currentFrame.dts;
- currentGop.duration = currentFrame.duration;
- } else {
- currentGop.duration += currentFrame.duration;
- currentGop.nalCount += currentFrame.length;
- currentGop.byteLength += currentFrame.byteLength;
- currentGop.push(currentFrame);
- }
- }
- if (gops.length && currentGop.duration <= 0) {
- currentGop.duration = gops[gops.length - 1].duration;
- }
- gops.byteLength += currentGop.byteLength;
- gops.nalCount += currentGop.nalCount;
- gops.duration += currentGop.duration; // push the final Gop
-
- gops.push(currentGop);
- return gops;
- };
- /*
- * Search for the first keyframe in the GOPs and throw away all frames
- * until that keyframe. Then extend the duration of the pulled keyframe
- * and pull the PTS and DTS of the keyframe so that it covers the time
- * range of the frames that were disposed.
- *
- * @param {Array} gops video GOPs
- * @returns {Array} modified video GOPs
- */
-
- var extendFirstKeyFrame = function (gops) {
- var currentGop;
- if (!gops[0][0].keyFrame && gops.length > 1) {
- // Remove the first GOP
- currentGop = gops.shift();
- gops.byteLength -= currentGop.byteLength;
- gops.nalCount -= currentGop.nalCount; // Extend the first frame of what is now the
- // first gop to cover the time period of the
- // frames we just removed
-
- gops[0][0].dts = currentGop.dts;
- gops[0][0].pts = currentGop.pts;
- gops[0][0].duration += currentGop.duration;
- }
- return gops;
- };
- /**
- * Default sample object
- * see ISO/IEC 14496-12:2012, section 8.6.4.3
- */
-
- var createDefaultSample = function () {
- return {
- size: 0,
- flags: {
- isLeading: 0,
- dependsOn: 1,
- isDependedOn: 0,
- hasRedundancy: 0,
- degradationPriority: 0,
- isNonSyncSample: 1
- }
- };
- };
- /*
- * Collates information from a video frame into an object for eventual
- * entry into an MP4 sample table.
- *
- * @param {Object} frame the video frame
- * @param {Number} dataOffset the byte offset to position the sample
- * @return {Object} object containing sample table info for a frame
- */
-
- var sampleForFrame = function (frame, dataOffset) {
- var sample = createDefaultSample();
- sample.dataOffset = dataOffset;
- sample.compositionTimeOffset = frame.pts - frame.dts;
- sample.duration = frame.duration;
- sample.size = 4 * frame.length; // Space for nal unit size
-
- sample.size += frame.byteLength;
- if (frame.keyFrame) {
- sample.flags.dependsOn = 2;
- sample.flags.isNonSyncSample = 0;
- }
- return sample;
- }; // generate the track's sample table from an array of gops
-
- var generateSampleTable$1 = function (gops, baseDataOffset) {
- var h,
- i,
- sample,
- currentGop,
- currentFrame,
- dataOffset = baseDataOffset || 0,
- samples = [];
- for (h = 0; h < gops.length; h++) {
- currentGop = gops[h];
- for (i = 0; i < currentGop.length; i++) {
- currentFrame = currentGop[i];
- sample = sampleForFrame(currentFrame, dataOffset);
- dataOffset += sample.size;
- samples.push(sample);
- }
- }
- return samples;
- }; // generate the track's raw mdat data from an array of gops
-
- var concatenateNalData = function (gops) {
- var h,
- i,
- j,
- currentGop,
- currentFrame,
- currentNal,
- dataOffset = 0,
- nalsByteLength = gops.byteLength,
- numberOfNals = gops.nalCount,
- totalByteLength = nalsByteLength + 4 * numberOfNals,
- data = new Uint8Array(totalByteLength),
- view = new DataView(data.buffer); // For each Gop..
-
- for (h = 0; h < gops.length; h++) {
- currentGop = gops[h]; // For each Frame..
-
- for (i = 0; i < currentGop.length; i++) {
- currentFrame = currentGop[i]; // For each NAL..
-
- for (j = 0; j < currentFrame.length; j++) {
- currentNal = currentFrame[j];
- view.setUint32(dataOffset, currentNal.data.byteLength);
- dataOffset += 4;
- data.set(currentNal.data, dataOffset);
- dataOffset += currentNal.data.byteLength;
- }
- }
- }
- return data;
- }; // generate the track's sample table from a frame
-
- var generateSampleTableForFrame = function (frame, baseDataOffset) {
- var sample,
- dataOffset = baseDataOffset || 0,
- samples = [];
- sample = sampleForFrame(frame, dataOffset);
- samples.push(sample);
- return samples;
- }; // generate the track's raw mdat data from a frame
-
- var concatenateNalDataForFrame = function (frame) {
- var i,
- currentNal,
- dataOffset = 0,
- nalsByteLength = frame.byteLength,
- numberOfNals = frame.length,
- totalByteLength = nalsByteLength + 4 * numberOfNals,
- data = new Uint8Array(totalByteLength),
- view = new DataView(data.buffer); // For each NAL..
-
- for (i = 0; i < frame.length; i++) {
- currentNal = frame[i];
- view.setUint32(dataOffset, currentNal.data.byteLength);
- dataOffset += 4;
- data.set(currentNal.data, dataOffset);
- dataOffset += currentNal.data.byteLength;
- }
- return data;
- };
- var frameUtils$1 = {
- groupNalsIntoFrames: groupNalsIntoFrames,
- groupFramesIntoGops: groupFramesIntoGops,
- extendFirstKeyFrame: extendFirstKeyFrame,
- generateSampleTable: generateSampleTable$1,
- concatenateNalData: concatenateNalData,
- generateSampleTableForFrame: generateSampleTableForFrame,
- concatenateNalDataForFrame: concatenateNalDataForFrame
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var highPrefix = [33, 16, 5, 32, 164, 27];
- var lowPrefix = [33, 65, 108, 84, 1, 2, 4, 8, 168, 2, 4, 8, 17, 191, 252];
- var zeroFill = function (count) {
- var a = [];
- while (count--) {
- a.push(0);
- }
- return a;
- };
- var makeTable = function (metaTable) {
- return Object.keys(metaTable).reduce(function (obj, key) {
- obj[key] = new Uint8Array(metaTable[key].reduce(function (arr, part) {
- return arr.concat(part);
- }, []));
- return obj;
- }, {});
- };
- var silence;
- var silence_1 = function () {
- if (!silence) {
- // Frames-of-silence to use for filling in missing AAC frames
- var coneOfSilence = {
- 96000: [highPrefix, [227, 64], zeroFill(154), [56]],
- 88200: [highPrefix, [231], zeroFill(170), [56]],
- 64000: [highPrefix, [248, 192], zeroFill(240), [56]],
- 48000: [highPrefix, [255, 192], zeroFill(268), [55, 148, 128], zeroFill(54), [112]],
- 44100: [highPrefix, [255, 192], zeroFill(268), [55, 163, 128], zeroFill(84), [112]],
- 32000: [highPrefix, [255, 192], zeroFill(268), [55, 234], zeroFill(226), [112]],
- 24000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 112], zeroFill(126), [224]],
- 16000: [highPrefix, [255, 192], zeroFill(268), [55, 255, 128], zeroFill(268), [111, 255], zeroFill(269), [223, 108], zeroFill(195), [1, 192]],
- 12000: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 253, 128], zeroFill(259), [56]],
- 11025: [lowPrefix, zeroFill(268), [3, 127, 248], zeroFill(268), [6, 255, 240], zeroFill(268), [13, 255, 224], zeroFill(268), [27, 255, 192], zeroFill(268), [55, 175, 128], zeroFill(108), [112]],
- 8000: [lowPrefix, zeroFill(268), [3, 121, 16], zeroFill(47), [7]]
- };
- silence = makeTable(coneOfSilence);
- }
- return silence;
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var ONE_SECOND_IN_TS$4 = 90000,
- // 90kHz clock
- secondsToVideoTs,
- secondsToAudioTs,
- videoTsToSeconds,
- audioTsToSeconds,
- audioTsToVideoTs,
- videoTsToAudioTs,
- metadataTsToSeconds;
- secondsToVideoTs = function (seconds) {
- return seconds * ONE_SECOND_IN_TS$4;
- };
- secondsToAudioTs = function (seconds, sampleRate) {
- return seconds * sampleRate;
- };
- videoTsToSeconds = function (timestamp) {
- return timestamp / ONE_SECOND_IN_TS$4;
- };
- audioTsToSeconds = function (timestamp, sampleRate) {
- return timestamp / sampleRate;
- };
- audioTsToVideoTs = function (timestamp, sampleRate) {
- return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
- };
- videoTsToAudioTs = function (timestamp, sampleRate) {
- return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
- };
- /**
- * Adjust ID3 tag or caption timing information by the timeline pts values
- * (if keepOriginalTimestamps is false) and convert to seconds
- */
-
- metadataTsToSeconds = function (timestamp, timelineStartPts, keepOriginalTimestamps) {
- return videoTsToSeconds(keepOriginalTimestamps ? timestamp : timestamp - timelineStartPts);
- };
- var clock$2 = {
- ONE_SECOND_IN_TS: ONE_SECOND_IN_TS$4,
- secondsToVideoTs: secondsToVideoTs,
- secondsToAudioTs: secondsToAudioTs,
- videoTsToSeconds: videoTsToSeconds,
- audioTsToSeconds: audioTsToSeconds,
- audioTsToVideoTs: audioTsToVideoTs,
- videoTsToAudioTs: videoTsToAudioTs,
- metadataTsToSeconds: metadataTsToSeconds
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var coneOfSilence = silence_1;
- var clock$1 = clock$2;
- /**
- * Sum the `byteLength` properties of the data in each AAC frame
- */
-
- var sumFrameByteLengths = function (array) {
- var i,
- currentObj,
- sum = 0; // sum the byteLength's all each nal unit in the frame
-
- for (i = 0; i < array.length; i++) {
- currentObj = array[i];
- sum += currentObj.data.byteLength;
- }
- return sum;
- }; // Possibly pad (prefix) the audio track with silence if appending this track
- // would lead to the introduction of a gap in the audio buffer
-
- var prefixWithSilence = function (track, frames, audioAppendStartTs, videoBaseMediaDecodeTime) {
- var baseMediaDecodeTimeTs,
- frameDuration = 0,
- audioGapDuration = 0,
- audioFillFrameCount = 0,
- audioFillDuration = 0,
- silentFrame,
- i,
- firstFrame;
- if (!frames.length) {
- return;
- }
- baseMediaDecodeTimeTs = clock$1.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate); // determine frame clock duration based on sample rate, round up to avoid overfills
-
- frameDuration = Math.ceil(clock$1.ONE_SECOND_IN_TS / (track.samplerate / 1024));
- if (audioAppendStartTs && videoBaseMediaDecodeTime) {
- // insert the shortest possible amount (audio gap or audio to video gap)
- audioGapDuration = baseMediaDecodeTimeTs - Math.max(audioAppendStartTs, videoBaseMediaDecodeTime); // number of full frames in the audio gap
-
- audioFillFrameCount = Math.floor(audioGapDuration / frameDuration);
- audioFillDuration = audioFillFrameCount * frameDuration;
- } // don't attempt to fill gaps smaller than a single frame or larger
- // than a half second
-
- if (audioFillFrameCount < 1 || audioFillDuration > clock$1.ONE_SECOND_IN_TS / 2) {
- return;
- }
- silentFrame = coneOfSilence()[track.samplerate];
- if (!silentFrame) {
- // we don't have a silent frame pregenerated for the sample rate, so use a frame
- // from the content instead
- silentFrame = frames[0].data;
- }
- for (i = 0; i < audioFillFrameCount; i++) {
- firstFrame = frames[0];
- frames.splice(0, 0, {
- data: silentFrame,
- dts: firstFrame.dts - frameDuration,
- pts: firstFrame.pts - frameDuration
- });
- }
- track.baseMediaDecodeTime -= Math.floor(clock$1.videoTsToAudioTs(audioFillDuration, track.samplerate));
- return audioFillDuration;
- }; // If the audio segment extends before the earliest allowed dts
- // value, remove AAC frames until starts at or after the earliest
- // allowed DTS so that we don't end up with a negative baseMedia-
- // DecodeTime for the audio track
-
- var trimAdtsFramesByEarliestDts = function (adtsFrames, track, earliestAllowedDts) {
- if (track.minSegmentDts >= earliestAllowedDts) {
- return adtsFrames;
- } // We will need to recalculate the earliest segment Dts
-
- track.minSegmentDts = Infinity;
- return adtsFrames.filter(function (currentFrame) {
- // If this is an allowed frame, keep it and record it's Dts
- if (currentFrame.dts >= earliestAllowedDts) {
- track.minSegmentDts = Math.min(track.minSegmentDts, currentFrame.dts);
- track.minSegmentPts = track.minSegmentDts;
- return true;
- } // Otherwise, discard it
-
- return false;
- });
- }; // generate the track's raw mdat data from an array of frames
-
- var generateSampleTable = function (frames) {
- var i,
- currentFrame,
- samples = [];
- for (i = 0; i < frames.length; i++) {
- currentFrame = frames[i];
- samples.push({
- size: currentFrame.data.byteLength,
- duration: 1024 // For AAC audio, all samples contain 1024 samples
- });
- }
-
- return samples;
- }; // generate the track's sample table from an array of frames
-
- var concatenateFrameData = function (frames) {
- var i,
- currentFrame,
- dataOffset = 0,
- data = new Uint8Array(sumFrameByteLengths(frames));
- for (i = 0; i < frames.length; i++) {
- currentFrame = frames[i];
- data.set(currentFrame.data, dataOffset);
- dataOffset += currentFrame.data.byteLength;
- }
- return data;
- };
- var audioFrameUtils$1 = {
- prefixWithSilence: prefixWithSilence,
- trimAdtsFramesByEarliestDts: trimAdtsFramesByEarliestDts,
- generateSampleTable: generateSampleTable,
- concatenateFrameData: concatenateFrameData
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var ONE_SECOND_IN_TS$3 = clock$2.ONE_SECOND_IN_TS;
- /**
- * Store information about the start and end of the track and the
- * duration for each frame/sample we process in order to calculate
- * the baseMediaDecodeTime
- */
-
- var collectDtsInfo = function (track, data) {
- if (typeof data.pts === 'number') {
- if (track.timelineStartInfo.pts === undefined) {
- track.timelineStartInfo.pts = data.pts;
- }
- if (track.minSegmentPts === undefined) {
- track.minSegmentPts = data.pts;
- } else {
- track.minSegmentPts = Math.min(track.minSegmentPts, data.pts);
- }
- if (track.maxSegmentPts === undefined) {
- track.maxSegmentPts = data.pts;
- } else {
- track.maxSegmentPts = Math.max(track.maxSegmentPts, data.pts);
- }
- }
- if (typeof data.dts === 'number') {
- if (track.timelineStartInfo.dts === undefined) {
- track.timelineStartInfo.dts = data.dts;
- }
- if (track.minSegmentDts === undefined) {
- track.minSegmentDts = data.dts;
- } else {
- track.minSegmentDts = Math.min(track.minSegmentDts, data.dts);
- }
- if (track.maxSegmentDts === undefined) {
- track.maxSegmentDts = data.dts;
- } else {
- track.maxSegmentDts = Math.max(track.maxSegmentDts, data.dts);
- }
- }
- };
- /**
- * Clear values used to calculate the baseMediaDecodeTime between
- * tracks
- */
-
- var clearDtsInfo = function (track) {
- delete track.minSegmentDts;
- delete track.maxSegmentDts;
- delete track.minSegmentPts;
- delete track.maxSegmentPts;
- };
- /**
- * Calculate the track's baseMediaDecodeTime based on the earliest
- * DTS the transmuxer has ever seen and the minimum DTS for the
- * current track
- * @param track {object} track metadata configuration
- * @param keepOriginalTimestamps {boolean} If true, keep the timestamps
- * in the source; false to adjust the first segment to start at 0.
- */
-
- var calculateTrackBaseMediaDecodeTime = function (track, keepOriginalTimestamps) {
- var baseMediaDecodeTime,
- scale,
- minSegmentDts = track.minSegmentDts; // Optionally adjust the time so the first segment starts at zero.
-
- if (!keepOriginalTimestamps) {
- minSegmentDts -= track.timelineStartInfo.dts;
- } // track.timelineStartInfo.baseMediaDecodeTime is the location, in time, where
- // we want the start of the first segment to be placed
-
- baseMediaDecodeTime = track.timelineStartInfo.baseMediaDecodeTime; // Add to that the distance this segment is from the very first
-
- baseMediaDecodeTime += minSegmentDts; // baseMediaDecodeTime must not become negative
-
- baseMediaDecodeTime = Math.max(0, baseMediaDecodeTime);
- if (track.type === 'audio') {
- // Audio has a different clock equal to the sampling_rate so we need to
- // scale the PTS values into the clock rate of the track
- scale = track.samplerate / ONE_SECOND_IN_TS$3;
- baseMediaDecodeTime *= scale;
- baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);
- }
- return baseMediaDecodeTime;
- };
- var trackDecodeInfo$1 = {
- clearDtsInfo: clearDtsInfo,
- calculateTrackBaseMediaDecodeTime: calculateTrackBaseMediaDecodeTime,
- collectDtsInfo: collectDtsInfo
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Reads in-band caption information from a video elementary
- * stream. Captions must follow the CEA-708 standard for injection
- * into an MPEG-2 transport streams.
- * @see https://en.wikipedia.org/wiki/CEA-708
- * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf
- */
- // payload type field to indicate how they are to be
- // interpreted. CEAS-708 caption content is always transmitted with
- // payload type 0x04.
-
- var USER_DATA_REGISTERED_ITU_T_T35 = 4,
- RBSP_TRAILING_BITS = 128;
- /**
- * Parse a supplemental enhancement information (SEI) NAL unit.
- * Stops parsing once a message of type ITU T T35 has been found.
- *
- * @param bytes {Uint8Array} the bytes of a SEI NAL unit
- * @return {object} the parsed SEI payload
- * @see Rec. ITU-T H.264, 7.3.2.3.1
- */
-
- var parseSei = function (bytes) {
- var i = 0,
- result = {
- payloadType: -1,
- payloadSize: 0
- },
- payloadType = 0,
- payloadSize = 0; // go through the sei_rbsp parsing each each individual sei_message
-
- while (i < bytes.byteLength) {
- // stop once we have hit the end of the sei_rbsp
- if (bytes[i] === RBSP_TRAILING_BITS) {
- break;
- } // Parse payload type
-
- while (bytes[i] === 0xFF) {
- payloadType += 255;
- i++;
- }
- payloadType += bytes[i++]; // Parse payload size
-
- while (bytes[i] === 0xFF) {
- payloadSize += 255;
- i++;
- }
- payloadSize += bytes[i++]; // this sei_message is a 608/708 caption so save it and break
- // there can only ever be one caption message in a frame's sei
-
- if (!result.payload && payloadType === USER_DATA_REGISTERED_ITU_T_T35) {
- var userIdentifier = String.fromCharCode(bytes[i + 3], bytes[i + 4], bytes[i + 5], bytes[i + 6]);
- if (userIdentifier === 'GA94') {
- result.payloadType = payloadType;
- result.payloadSize = payloadSize;
- result.payload = bytes.subarray(i, i + payloadSize);
- break;
- } else {
- result.payload = void 0;
- }
- } // skip the payload and parse the next message
-
- i += payloadSize;
- payloadType = 0;
- payloadSize = 0;
- }
- return result;
- }; // see ANSI/SCTE 128-1 (2013), section 8.1
-
- var parseUserData = function (sei) {
- // itu_t_t35_contry_code must be 181 (United States) for
- // captions
- if (sei.payload[0] !== 181) {
- return null;
- } // itu_t_t35_provider_code should be 49 (ATSC) for captions
-
- if ((sei.payload[1] << 8 | sei.payload[2]) !== 49) {
- return null;
- } // the user_identifier should be "GA94" to indicate ATSC1 data
-
- if (String.fromCharCode(sei.payload[3], sei.payload[4], sei.payload[5], sei.payload[6]) !== 'GA94') {
- return null;
- } // finally, user_data_type_code should be 0x03 for caption data
-
- if (sei.payload[7] !== 0x03) {
- return null;
- } // return the user_data_type_structure and strip the trailing
- // marker bits
-
- return sei.payload.subarray(8, sei.payload.length - 1);
- }; // see CEA-708-D, section 4.4
-
- var parseCaptionPackets = function (pts, userData) {
- var results = [],
- i,
- count,
- offset,
- data; // if this is just filler, return immediately
-
- if (!(userData[0] & 0x40)) {
- return results;
- } // parse out the cc_data_1 and cc_data_2 fields
-
- count = userData[0] & 0x1f;
- for (i = 0; i < count; i++) {
- offset = i * 3;
- data = {
- type: userData[offset + 2] & 0x03,
- pts: pts
- }; // capture cc data when cc_valid is 1
-
- if (userData[offset + 2] & 0x04) {
- data.ccData = userData[offset + 3] << 8 | userData[offset + 4];
- results.push(data);
- }
- }
- return results;
- };
- var discardEmulationPreventionBytes$1 = function (data) {
- var length = data.byteLength,
- emulationPreventionBytesPositions = [],
- i = 1,
- newLength,
- newData; // Find all `Emulation Prevention Bytes`
-
- while (i < length - 2) {
- if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
- emulationPreventionBytesPositions.push(i + 2);
- i += 2;
- } else {
- i++;
- }
- } // If no Emulation Prevention Bytes were found just return the original
- // array
-
- if (emulationPreventionBytesPositions.length === 0) {
- return data;
- } // Create a new array to hold the NAL unit data
-
- newLength = length - emulationPreventionBytesPositions.length;
- newData = new Uint8Array(newLength);
- var sourceIndex = 0;
- for (i = 0; i < newLength; sourceIndex++, i++) {
- if (sourceIndex === emulationPreventionBytesPositions[0]) {
- // Skip this byte
- sourceIndex++; // Remove this position index
-
- emulationPreventionBytesPositions.shift();
- }
- newData[i] = data[sourceIndex];
- }
- return newData;
- }; // exports
-
- var captionPacketParser = {
- parseSei: parseSei,
- parseUserData: parseUserData,
- parseCaptionPackets: parseCaptionPackets,
- discardEmulationPreventionBytes: discardEmulationPreventionBytes$1,
- USER_DATA_REGISTERED_ITU_T_T35: USER_DATA_REGISTERED_ITU_T_T35
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Reads in-band caption information from a video elementary
- * stream. Captions must follow the CEA-708 standard for injection
- * into an MPEG-2 transport streams.
- * @see https://en.wikipedia.org/wiki/CEA-708
- * @see https://www.gpo.gov/fdsys/pkg/CFR-2007-title47-vol1/pdf/CFR-2007-title47-vol1-sec15-119.pdf
- */
- // Link To Transport
- // -----------------
-
- var Stream$7 = stream;
- var cea708Parser = captionPacketParser;
- var CaptionStream$2 = function (options) {
- options = options || {};
- CaptionStream$2.prototype.init.call(this); // parse708captions flag, default to true
-
- this.parse708captions_ = typeof options.parse708captions === 'boolean' ? options.parse708captions : true;
- this.captionPackets_ = [];
- this.ccStreams_ = [new Cea608Stream(0, 0),
- // eslint-disable-line no-use-before-define
- new Cea608Stream(0, 1),
- // eslint-disable-line no-use-before-define
- new Cea608Stream(1, 0),
- // eslint-disable-line no-use-before-define
- new Cea608Stream(1, 1) // eslint-disable-line no-use-before-define
- ];
-
- if (this.parse708captions_) {
- this.cc708Stream_ = new Cea708Stream({
- captionServices: options.captionServices
- }); // eslint-disable-line no-use-before-define
- }
-
- this.reset(); // forward data and done events from CCs to this CaptionStream
-
- this.ccStreams_.forEach(function (cc) {
- cc.on('data', this.trigger.bind(this, 'data'));
- cc.on('partialdone', this.trigger.bind(this, 'partialdone'));
- cc.on('done', this.trigger.bind(this, 'done'));
- }, this);
- if (this.parse708captions_) {
- this.cc708Stream_.on('data', this.trigger.bind(this, 'data'));
- this.cc708Stream_.on('partialdone', this.trigger.bind(this, 'partialdone'));
- this.cc708Stream_.on('done', this.trigger.bind(this, 'done'));
- }
- };
- CaptionStream$2.prototype = new Stream$7();
- CaptionStream$2.prototype.push = function (event) {
- var sei, userData, newCaptionPackets; // only examine SEI NALs
-
- if (event.nalUnitType !== 'sei_rbsp') {
- return;
- } // parse the sei
-
- sei = cea708Parser.parseSei(event.escapedRBSP); // no payload data, skip
-
- if (!sei.payload) {
- return;
- } // ignore everything but user_data_registered_itu_t_t35
-
- if (sei.payloadType !== cea708Parser.USER_DATA_REGISTERED_ITU_T_T35) {
- return;
- } // parse out the user data payload
-
- userData = cea708Parser.parseUserData(sei); // ignore unrecognized userData
-
- if (!userData) {
- return;
- } // Sometimes, the same segment # will be downloaded twice. To stop the
- // caption data from being processed twice, we track the latest dts we've
- // received and ignore everything with a dts before that. However, since
- // data for a specific dts can be split across packets on either side of
- // a segment boundary, we need to make sure we *don't* ignore the packets
- // from the *next* segment that have dts === this.latestDts_. By constantly
- // tracking the number of packets received with dts === this.latestDts_, we
- // know how many should be ignored once we start receiving duplicates.
-
- if (event.dts < this.latestDts_) {
- // We've started getting older data, so set the flag.
- this.ignoreNextEqualDts_ = true;
- return;
- } else if (event.dts === this.latestDts_ && this.ignoreNextEqualDts_) {
- this.numSameDts_--;
- if (!this.numSameDts_) {
- // We've received the last duplicate packet, time to start processing again
- this.ignoreNextEqualDts_ = false;
- }
- return;
- } // parse out CC data packets and save them for later
-
- newCaptionPackets = cea708Parser.parseCaptionPackets(event.pts, userData);
- this.captionPackets_ = this.captionPackets_.concat(newCaptionPackets);
- if (this.latestDts_ !== event.dts) {
- this.numSameDts_ = 0;
- }
- this.numSameDts_++;
- this.latestDts_ = event.dts;
- };
- CaptionStream$2.prototype.flushCCStreams = function (flushType) {
- this.ccStreams_.forEach(function (cc) {
- return flushType === 'flush' ? cc.flush() : cc.partialFlush();
- }, this);
- };
- CaptionStream$2.prototype.flushStream = function (flushType) {
- // make sure we actually parsed captions before proceeding
- if (!this.captionPackets_.length) {
- this.flushCCStreams(flushType);
- return;
- } // In Chrome, the Array#sort function is not stable so add a
- // presortIndex that we can use to ensure we get a stable-sort
-
- this.captionPackets_.forEach(function (elem, idx) {
- elem.presortIndex = idx;
- }); // sort caption byte-pairs based on their PTS values
-
- this.captionPackets_.sort(function (a, b) {
- if (a.pts === b.pts) {
- return a.presortIndex - b.presortIndex;
- }
- return a.pts - b.pts;
- });
- this.captionPackets_.forEach(function (packet) {
- if (packet.type < 2) {
- // Dispatch packet to the right Cea608Stream
- this.dispatchCea608Packet(packet);
- } else {
- // Dispatch packet to the Cea708Stream
- this.dispatchCea708Packet(packet);
- }
- }, this);
- this.captionPackets_.length = 0;
- this.flushCCStreams(flushType);
- };
- CaptionStream$2.prototype.flush = function () {
- return this.flushStream('flush');
- }; // Only called if handling partial data
-
- CaptionStream$2.prototype.partialFlush = function () {
- return this.flushStream('partialFlush');
- };
- CaptionStream$2.prototype.reset = function () {
- this.latestDts_ = null;
- this.ignoreNextEqualDts_ = false;
- this.numSameDts_ = 0;
- this.activeCea608Channel_ = [null, null];
- this.ccStreams_.forEach(function (ccStream) {
- ccStream.reset();
- });
- }; // From the CEA-608 spec:
-
- /*
- * When XDS sub-packets are interleaved with other services, the end of each sub-packet shall be followed
- * by a control pair to change to a different service. When any of the control codes from 0x10 to 0x1F is
- * used to begin a control code pair, it indicates the return to captioning or Text data. The control code pair
- * and subsequent data should then be processed according to the FCC rules. It may be necessary for the
- * line 21 data encoder to automatically insert a control code pair (i.e. RCL, RU2, RU3, RU4, RDC, or RTD)
- * to switch to captioning or Text.
- */
- // With that in mind, we ignore any data between an XDS control code and a
- // subsequent closed-captioning control code.
-
- CaptionStream$2.prototype.dispatchCea608Packet = function (packet) {
- // NOTE: packet.type is the CEA608 field
- if (this.setsTextOrXDSActive(packet)) {
- this.activeCea608Channel_[packet.type] = null;
- } else if (this.setsChannel1Active(packet)) {
- this.activeCea608Channel_[packet.type] = 0;
- } else if (this.setsChannel2Active(packet)) {
- this.activeCea608Channel_[packet.type] = 1;
- }
- if (this.activeCea608Channel_[packet.type] === null) {
- // If we haven't received anything to set the active channel, or the
- // packets are Text/XDS data, discard the data; we don't want jumbled
- // captions
- return;
- }
- this.ccStreams_[(packet.type << 1) + this.activeCea608Channel_[packet.type]].push(packet);
- };
- CaptionStream$2.prototype.setsChannel1Active = function (packet) {
- return (packet.ccData & 0x7800) === 0x1000;
- };
- CaptionStream$2.prototype.setsChannel2Active = function (packet) {
- return (packet.ccData & 0x7800) === 0x1800;
- };
- CaptionStream$2.prototype.setsTextOrXDSActive = function (packet) {
- return (packet.ccData & 0x7100) === 0x0100 || (packet.ccData & 0x78fe) === 0x102a || (packet.ccData & 0x78fe) === 0x182a;
- };
- CaptionStream$2.prototype.dispatchCea708Packet = function (packet) {
- if (this.parse708captions_) {
- this.cc708Stream_.push(packet);
- }
- }; // ----------------------
- // Session to Application
- // ----------------------
- // This hash maps special and extended character codes to their
- // proper Unicode equivalent. The first one-byte key is just a
- // non-standard character code. The two-byte keys that follow are
- // the extended CEA708 character codes, along with the preceding
- // 0x10 extended character byte to distinguish these codes from
- // non-extended character codes. Every CEA708 character code that
- // is not in this object maps directly to a standard unicode
- // character code.
- // The transparent space and non-breaking transparent space are
- // technically not fully supported since there is no code to
- // make them transparent, so they have normal non-transparent
- // stand-ins.
- // The special closed caption (CC) character isn't a standard
- // unicode character, so a fairly similar unicode character was
- // chosen in it's place.
-
- var CHARACTER_TRANSLATION_708 = {
- 0x7f: 0x266a,
- // ♪
- 0x1020: 0x20,
- // Transparent Space
- 0x1021: 0xa0,
- // Nob-breaking Transparent Space
- 0x1025: 0x2026,
- // …
- 0x102a: 0x0160,
- // Š
- 0x102c: 0x0152,
- // Œ
- 0x1030: 0x2588,
- // █
- 0x1031: 0x2018,
- // ‘
- 0x1032: 0x2019,
- // ’
- 0x1033: 0x201c,
- // “
- 0x1034: 0x201d,
- // ”
- 0x1035: 0x2022,
- // •
- 0x1039: 0x2122,
- // ™
- 0x103a: 0x0161,
- // š
- 0x103c: 0x0153,
- // œ
- 0x103d: 0x2120,
- // ℠
- 0x103f: 0x0178,
- // Ÿ
- 0x1076: 0x215b,
- // ⅛
- 0x1077: 0x215c,
- // ⅜
- 0x1078: 0x215d,
- // ⅝
- 0x1079: 0x215e,
- // ⅞
- 0x107a: 0x23d0,
- // ⏐
- 0x107b: 0x23a4,
- // ⎤
- 0x107c: 0x23a3,
- // ⎣
- 0x107d: 0x23af,
- // ⎯
- 0x107e: 0x23a6,
- // ⎦
- 0x107f: 0x23a1,
- // ⎡
- 0x10a0: 0x3138 // ㄸ (CC char)
- };
-
- var get708CharFromCode = function (code) {
- var newCode = CHARACTER_TRANSLATION_708[code] || code;
- if (code & 0x1000 && code === newCode) {
- // Invalid extended code
- return '';
- }
- return String.fromCharCode(newCode);
- };
- var within708TextBlock = function (b) {
- return 0x20 <= b && b <= 0x7f || 0xa0 <= b && b <= 0xff;
- };
- var Cea708Window = function (windowNum) {
- this.windowNum = windowNum;
- this.reset();
- };
- Cea708Window.prototype.reset = function () {
- this.clearText();
- this.pendingNewLine = false;
- this.winAttr = {};
- this.penAttr = {};
- this.penLoc = {};
- this.penColor = {}; // These default values are arbitrary,
- // defineWindow will usually override them
-
- this.visible = 0;
- this.rowLock = 0;
- this.columnLock = 0;
- this.priority = 0;
- this.relativePositioning = 0;
- this.anchorVertical = 0;
- this.anchorHorizontal = 0;
- this.anchorPoint = 0;
- this.rowCount = 1;
- this.virtualRowCount = this.rowCount + 1;
- this.columnCount = 41;
- this.windowStyle = 0;
- this.penStyle = 0;
- };
- Cea708Window.prototype.getText = function () {
- return this.rows.join('\n');
- };
- Cea708Window.prototype.clearText = function () {
- this.rows = [''];
- this.rowIdx = 0;
- };
- Cea708Window.prototype.newLine = function (pts) {
- if (this.rows.length >= this.virtualRowCount && typeof this.beforeRowOverflow === 'function') {
- this.beforeRowOverflow(pts);
- }
- if (this.rows.length > 0) {
- this.rows.push('');
- this.rowIdx++;
- } // Show all virtual rows since there's no visible scrolling
-
- while (this.rows.length > this.virtualRowCount) {
- this.rows.shift();
- this.rowIdx--;
- }
- };
- Cea708Window.prototype.isEmpty = function () {
- if (this.rows.length === 0) {
- return true;
- } else if (this.rows.length === 1) {
- return this.rows[0] === '';
- }
- return false;
- };
- Cea708Window.prototype.addText = function (text) {
- this.rows[this.rowIdx] += text;
- };
- Cea708Window.prototype.backspace = function () {
- if (!this.isEmpty()) {
- var row = this.rows[this.rowIdx];
- this.rows[this.rowIdx] = row.substr(0, row.length - 1);
- }
- };
- var Cea708Service = function (serviceNum, encoding, stream) {
- this.serviceNum = serviceNum;
- this.text = '';
- this.currentWindow = new Cea708Window(-1);
- this.windows = [];
- this.stream = stream; // Try to setup a TextDecoder if an `encoding` value was provided
-
- if (typeof encoding === 'string') {
- this.createTextDecoder(encoding);
- }
- };
- /**
- * Initialize service windows
- * Must be run before service use
- *
- * @param {Integer} pts PTS value
- * @param {Function} beforeRowOverflow Function to execute before row overflow of a window
- */
-
- Cea708Service.prototype.init = function (pts, beforeRowOverflow) {
- this.startPts = pts;
- for (var win = 0; win < 8; win++) {
- this.windows[win] = new Cea708Window(win);
- if (typeof beforeRowOverflow === 'function') {
- this.windows[win].beforeRowOverflow = beforeRowOverflow;
- }
- }
- };
- /**
- * Set current window of service to be affected by commands
- *
- * @param {Integer} windowNum Window number
- */
-
- Cea708Service.prototype.setCurrentWindow = function (windowNum) {
- this.currentWindow = this.windows[windowNum];
- };
- /**
- * Try to create a TextDecoder if it is natively supported
- */
-
- Cea708Service.prototype.createTextDecoder = function (encoding) {
- if (typeof TextDecoder === 'undefined') {
- this.stream.trigger('log', {
- level: 'warn',
- message: 'The `encoding` option is unsupported without TextDecoder support'
- });
- } else {
- try {
- this.textDecoder_ = new TextDecoder(encoding);
- } catch (error) {
- this.stream.trigger('log', {
- level: 'warn',
- message: 'TextDecoder could not be created with ' + encoding + ' encoding. ' + error
- });
- }
- }
- };
- var Cea708Stream = function (options) {
- options = options || {};
- Cea708Stream.prototype.init.call(this);
- var self = this;
- var captionServices = options.captionServices || {};
- var captionServiceEncodings = {};
- var serviceProps; // Get service encodings from captionServices option block
-
- Object.keys(captionServices).forEach(serviceName => {
- serviceProps = captionServices[serviceName];
- if (/^SERVICE/.test(serviceName)) {
- captionServiceEncodings[serviceName] = serviceProps.encoding;
- }
- });
- this.serviceEncodings = captionServiceEncodings;
- this.current708Packet = null;
- this.services = {};
- this.push = function (packet) {
- if (packet.type === 3) {
- // 708 packet start
- self.new708Packet();
- self.add708Bytes(packet);
- } else {
- if (self.current708Packet === null) {
- // This should only happen at the start of a file if there's no packet start.
- self.new708Packet();
- }
- self.add708Bytes(packet);
- }
- };
- };
- Cea708Stream.prototype = new Stream$7();
- /**
- * Push current 708 packet, create new 708 packet.
- */
-
- Cea708Stream.prototype.new708Packet = function () {
- if (this.current708Packet !== null) {
- this.push708Packet();
- }
- this.current708Packet = {
- data: [],
- ptsVals: []
- };
- };
- /**
- * Add pts and both bytes from packet into current 708 packet.
- */
-
- Cea708Stream.prototype.add708Bytes = function (packet) {
- var data = packet.ccData;
- var byte0 = data >>> 8;
- var byte1 = data & 0xff; // I would just keep a list of packets instead of bytes, but it isn't clear in the spec
- // that service blocks will always line up with byte pairs.
-
- this.current708Packet.ptsVals.push(packet.pts);
- this.current708Packet.data.push(byte0);
- this.current708Packet.data.push(byte1);
- };
- /**
- * Parse completed 708 packet into service blocks and push each service block.
- */
-
- Cea708Stream.prototype.push708Packet = function () {
- var packet708 = this.current708Packet;
- var packetData = packet708.data;
- var serviceNum = null;
- var blockSize = null;
- var i = 0;
- var b = packetData[i++];
- packet708.seq = b >> 6;
- packet708.sizeCode = b & 0x3f; // 0b00111111;
-
- for (; i < packetData.length; i++) {
- b = packetData[i++];
- serviceNum = b >> 5;
- blockSize = b & 0x1f; // 0b00011111
-
- if (serviceNum === 7 && blockSize > 0) {
- // Extended service num
- b = packetData[i++];
- serviceNum = b;
- }
- this.pushServiceBlock(serviceNum, i, blockSize);
- if (blockSize > 0) {
- i += blockSize - 1;
- }
- }
- };
- /**
- * Parse service block, execute commands, read text.
- *
- * Note: While many of these commands serve important purposes,
- * many others just parse out the parameters or attributes, but
- * nothing is done with them because this is not a full and complete
- * implementation of the entire 708 spec.
- *
- * @param {Integer} serviceNum Service number
- * @param {Integer} start Start index of the 708 packet data
- * @param {Integer} size Block size
- */
-
- Cea708Stream.prototype.pushServiceBlock = function (serviceNum, start, size) {
- var b;
- var i = start;
- var packetData = this.current708Packet.data;
- var service = this.services[serviceNum];
- if (!service) {
- service = this.initService(serviceNum, i);
- }
- for (; i < start + size && i < packetData.length; i++) {
- b = packetData[i];
- if (within708TextBlock(b)) {
- i = this.handleText(i, service);
- } else if (b === 0x18) {
- i = this.multiByteCharacter(i, service);
- } else if (b === 0x10) {
- i = this.extendedCommands(i, service);
- } else if (0x80 <= b && b <= 0x87) {
- i = this.setCurrentWindow(i, service);
- } else if (0x98 <= b && b <= 0x9f) {
- i = this.defineWindow(i, service);
- } else if (b === 0x88) {
- i = this.clearWindows(i, service);
- } else if (b === 0x8c) {
- i = this.deleteWindows(i, service);
- } else if (b === 0x89) {
- i = this.displayWindows(i, service);
- } else if (b === 0x8a) {
- i = this.hideWindows(i, service);
- } else if (b === 0x8b) {
- i = this.toggleWindows(i, service);
- } else if (b === 0x97) {
- i = this.setWindowAttributes(i, service);
- } else if (b === 0x90) {
- i = this.setPenAttributes(i, service);
- } else if (b === 0x91) {
- i = this.setPenColor(i, service);
- } else if (b === 0x92) {
- i = this.setPenLocation(i, service);
- } else if (b === 0x8f) {
- service = this.reset(i, service);
- } else if (b === 0x08) {
- // BS: Backspace
- service.currentWindow.backspace();
- } else if (b === 0x0c) {
- // FF: Form feed
- service.currentWindow.clearText();
- } else if (b === 0x0d) {
- // CR: Carriage return
- service.currentWindow.pendingNewLine = true;
- } else if (b === 0x0e) {
- // HCR: Horizontal carriage return
- service.currentWindow.clearText();
- } else if (b === 0x8d) {
- // DLY: Delay, nothing to do
- i++;
- } else ;
- }
- };
- /**
- * Execute an extended command
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.extendedCommands = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- if (within708TextBlock(b)) {
- i = this.handleText(i, service, {
- isExtended: true
- });
- }
- return i;
- };
- /**
- * Get PTS value of a given byte index
- *
- * @param {Integer} byteIndex Index of the byte
- * @return {Integer} PTS
- */
-
- Cea708Stream.prototype.getPts = function (byteIndex) {
- // There's 1 pts value per 2 bytes
- return this.current708Packet.ptsVals[Math.floor(byteIndex / 2)];
- };
- /**
- * Initializes a service
- *
- * @param {Integer} serviceNum Service number
- * @return {Service} Initialized service object
- */
-
- Cea708Stream.prototype.initService = function (serviceNum, i) {
- var serviceName = 'SERVICE' + serviceNum;
- var self = this;
- var serviceName;
- var encoding;
- if (serviceName in this.serviceEncodings) {
- encoding = this.serviceEncodings[serviceName];
- }
- this.services[serviceNum] = new Cea708Service(serviceNum, encoding, self);
- this.services[serviceNum].init(this.getPts(i), function (pts) {
- self.flushDisplayed(pts, self.services[serviceNum]);
- });
- return this.services[serviceNum];
- };
- /**
- * Execute text writing to current window
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.handleText = function (i, service, options) {
- var isExtended = options && options.isExtended;
- var isMultiByte = options && options.isMultiByte;
- var packetData = this.current708Packet.data;
- var extended = isExtended ? 0x1000 : 0x0000;
- var currentByte = packetData[i];
- var nextByte = packetData[i + 1];
- var win = service.currentWindow;
- var char;
- var charCodeArray; // Converts an array of bytes to a unicode hex string.
-
- function toHexString(byteArray) {
- return byteArray.map(byte => {
- return ('0' + (byte & 0xFF).toString(16)).slice(-2);
- }).join('');
- }
- if (isMultiByte) {
- charCodeArray = [currentByte, nextByte];
- i++;
- } else {
- charCodeArray = [currentByte];
- } // Use the TextDecoder if one was created for this service
-
- if (service.textDecoder_ && !isExtended) {
- char = service.textDecoder_.decode(new Uint8Array(charCodeArray));
- } else {
- // We assume any multi-byte char without a decoder is unicode.
- if (isMultiByte) {
- const unicode = toHexString(charCodeArray); // Takes a unicode hex string and creates a single character.
-
- char = String.fromCharCode(parseInt(unicode, 16));
- } else {
- char = get708CharFromCode(extended | currentByte);
- }
- }
- if (win.pendingNewLine && !win.isEmpty()) {
- win.newLine(this.getPts(i));
- }
- win.pendingNewLine = false;
- win.addText(char);
- return i;
- };
- /**
- * Handle decoding of multibyte character
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.multiByteCharacter = function (i, service) {
- var packetData = this.current708Packet.data;
- var firstByte = packetData[i + 1];
- var secondByte = packetData[i + 2];
- if (within708TextBlock(firstByte) && within708TextBlock(secondByte)) {
- i = this.handleText(++i, service, {
- isMultiByte: true
- });
- }
- return i;
- };
- /**
- * Parse and execute the CW# command.
- *
- * Set the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.setCurrentWindow = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var windowNum = b & 0x07;
- service.setCurrentWindow(windowNum);
- return i;
- };
- /**
- * Parse and execute the DF# command.
- *
- * Define a window and set it as the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.defineWindow = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var windowNum = b & 0x07;
- service.setCurrentWindow(windowNum);
- var win = service.currentWindow;
- b = packetData[++i];
- win.visible = (b & 0x20) >> 5; // v
-
- win.rowLock = (b & 0x10) >> 4; // rl
-
- win.columnLock = (b & 0x08) >> 3; // cl
-
- win.priority = b & 0x07; // p
-
- b = packetData[++i];
- win.relativePositioning = (b & 0x80) >> 7; // rp
-
- win.anchorVertical = b & 0x7f; // av
-
- b = packetData[++i];
- win.anchorHorizontal = b; // ah
-
- b = packetData[++i];
- win.anchorPoint = (b & 0xf0) >> 4; // ap
-
- win.rowCount = b & 0x0f; // rc
-
- b = packetData[++i];
- win.columnCount = b & 0x3f; // cc
-
- b = packetData[++i];
- win.windowStyle = (b & 0x38) >> 3; // ws
-
- win.penStyle = b & 0x07; // ps
- // The spec says there are (rowCount+1) "virtual rows"
-
- win.virtualRowCount = win.rowCount + 1;
- return i;
- };
- /**
- * Parse and execute the SWA command.
- *
- * Set attributes of the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.setWindowAttributes = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var winAttr = service.currentWindow.winAttr;
- b = packetData[++i];
- winAttr.fillOpacity = (b & 0xc0) >> 6; // fo
-
- winAttr.fillRed = (b & 0x30) >> 4; // fr
-
- winAttr.fillGreen = (b & 0x0c) >> 2; // fg
-
- winAttr.fillBlue = b & 0x03; // fb
-
- b = packetData[++i];
- winAttr.borderType = (b & 0xc0) >> 6; // bt
-
- winAttr.borderRed = (b & 0x30) >> 4; // br
-
- winAttr.borderGreen = (b & 0x0c) >> 2; // bg
-
- winAttr.borderBlue = b & 0x03; // bb
-
- b = packetData[++i];
- winAttr.borderType += (b & 0x80) >> 5; // bt
-
- winAttr.wordWrap = (b & 0x40) >> 6; // ww
-
- winAttr.printDirection = (b & 0x30) >> 4; // pd
-
- winAttr.scrollDirection = (b & 0x0c) >> 2; // sd
-
- winAttr.justify = b & 0x03; // j
-
- b = packetData[++i];
- winAttr.effectSpeed = (b & 0xf0) >> 4; // es
-
- winAttr.effectDirection = (b & 0x0c) >> 2; // ed
-
- winAttr.displayEffect = b & 0x03; // de
-
- return i;
- };
- /**
- * Gather text from all displayed windows and push a caption to output.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- */
-
- Cea708Stream.prototype.flushDisplayed = function (pts, service) {
- var displayedText = []; // TODO: Positioning not supported, displaying multiple windows will not necessarily
- // display text in the correct order, but sample files so far have not shown any issue.
-
- for (var winId = 0; winId < 8; winId++) {
- if (service.windows[winId].visible && !service.windows[winId].isEmpty()) {
- displayedText.push(service.windows[winId].getText());
- }
- }
- service.endPts = pts;
- service.text = displayedText.join('\n\n');
- this.pushCaption(service);
- service.startPts = pts;
- };
- /**
- * Push a caption to output if the caption contains text.
- *
- * @param {Service} service The service object to be affected
- */
-
- Cea708Stream.prototype.pushCaption = function (service) {
- if (service.text !== '') {
- this.trigger('data', {
- startPts: service.startPts,
- endPts: service.endPts,
- text: service.text,
- stream: 'cc708_' + service.serviceNum
- });
- service.text = '';
- service.startPts = service.endPts;
- }
- };
- /**
- * Parse and execute the DSW command.
- *
- * Set visible property of windows based on the parsed bitmask.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.displayWindows = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- for (var winId = 0; winId < 8; winId++) {
- if (b & 0x01 << winId) {
- service.windows[winId].visible = 1;
- }
- }
- return i;
- };
- /**
- * Parse and execute the HDW command.
- *
- * Set visible property of windows based on the parsed bitmask.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.hideWindows = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- for (var winId = 0; winId < 8; winId++) {
- if (b & 0x01 << winId) {
- service.windows[winId].visible = 0;
- }
- }
- return i;
- };
- /**
- * Parse and execute the TGW command.
- *
- * Set visible property of windows based on the parsed bitmask.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.toggleWindows = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- for (var winId = 0; winId < 8; winId++) {
- if (b & 0x01 << winId) {
- service.windows[winId].visible ^= 1;
- }
- }
- return i;
- };
- /**
- * Parse and execute the CLW command.
- *
- * Clear text of windows based on the parsed bitmask.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.clearWindows = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- for (var winId = 0; winId < 8; winId++) {
- if (b & 0x01 << winId) {
- service.windows[winId].clearText();
- }
- }
- return i;
- };
- /**
- * Parse and execute the DLW command.
- *
- * Re-initialize windows based on the parsed bitmask.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.deleteWindows = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[++i];
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- for (var winId = 0; winId < 8; winId++) {
- if (b & 0x01 << winId) {
- service.windows[winId].reset();
- }
- }
- return i;
- };
- /**
- * Parse and execute the SPA command.
- *
- * Set pen attributes of the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.setPenAttributes = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var penAttr = service.currentWindow.penAttr;
- b = packetData[++i];
- penAttr.textTag = (b & 0xf0) >> 4; // tt
-
- penAttr.offset = (b & 0x0c) >> 2; // o
-
- penAttr.penSize = b & 0x03; // s
-
- b = packetData[++i];
- penAttr.italics = (b & 0x80) >> 7; // i
-
- penAttr.underline = (b & 0x40) >> 6; // u
-
- penAttr.edgeType = (b & 0x38) >> 3; // et
-
- penAttr.fontStyle = b & 0x07; // fs
-
- return i;
- };
- /**
- * Parse and execute the SPC command.
- *
- * Set pen color of the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.setPenColor = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var penColor = service.currentWindow.penColor;
- b = packetData[++i];
- penColor.fgOpacity = (b & 0xc0) >> 6; // fo
-
- penColor.fgRed = (b & 0x30) >> 4; // fr
-
- penColor.fgGreen = (b & 0x0c) >> 2; // fg
-
- penColor.fgBlue = b & 0x03; // fb
-
- b = packetData[++i];
- penColor.bgOpacity = (b & 0xc0) >> 6; // bo
-
- penColor.bgRed = (b & 0x30) >> 4; // br
-
- penColor.bgGreen = (b & 0x0c) >> 2; // bg
-
- penColor.bgBlue = b & 0x03; // bb
-
- b = packetData[++i];
- penColor.edgeRed = (b & 0x30) >> 4; // er
-
- penColor.edgeGreen = (b & 0x0c) >> 2; // eg
-
- penColor.edgeBlue = b & 0x03; // eb
-
- return i;
- };
- /**
- * Parse and execute the SPL command.
- *
- * Set pen location of the current window.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Integer} New index after parsing
- */
-
- Cea708Stream.prototype.setPenLocation = function (i, service) {
- var packetData = this.current708Packet.data;
- var b = packetData[i];
- var penLoc = service.currentWindow.penLoc; // Positioning isn't really supported at the moment, so this essentially just inserts a linebreak
-
- service.currentWindow.pendingNewLine = true;
- b = packetData[++i];
- penLoc.row = b & 0x0f; // r
-
- b = packetData[++i];
- penLoc.column = b & 0x3f; // c
-
- return i;
- };
- /**
- * Execute the RST command.
- *
- * Reset service to a clean slate. Re-initialize.
- *
- * @param {Integer} i Current index in the 708 packet
- * @param {Service} service The service object to be affected
- * @return {Service} Re-initialized service
- */
-
- Cea708Stream.prototype.reset = function (i, service) {
- var pts = this.getPts(i);
- this.flushDisplayed(pts, service);
- return this.initService(service.serviceNum, i);
- }; // This hash maps non-ASCII, special, and extended character codes to their
- // proper Unicode equivalent. The first keys that are only a single byte
- // are the non-standard ASCII characters, which simply map the CEA608 byte
- // to the standard ASCII/Unicode. The two-byte keys that follow are the CEA608
- // character codes, but have their MSB bitmasked with 0x03 so that a lookup
- // can be performed regardless of the field and data channel on which the
- // character code was received.
-
- var CHARACTER_TRANSLATION = {
- 0x2a: 0xe1,
- // á
- 0x5c: 0xe9,
- // é
- 0x5e: 0xed,
- // í
- 0x5f: 0xf3,
- // ó
- 0x60: 0xfa,
- // ú
- 0x7b: 0xe7,
- // ç
- 0x7c: 0xf7,
- // ÷
- 0x7d: 0xd1,
- // Ñ
- 0x7e: 0xf1,
- // ñ
- 0x7f: 0x2588,
- // █
- 0x0130: 0xae,
- // ®
- 0x0131: 0xb0,
- // °
- 0x0132: 0xbd,
- // ½
- 0x0133: 0xbf,
- // ¿
- 0x0134: 0x2122,
- // ™
- 0x0135: 0xa2,
- // ¢
- 0x0136: 0xa3,
- // £
- 0x0137: 0x266a,
- // ♪
- 0x0138: 0xe0,
- // à
- 0x0139: 0xa0,
- //
- 0x013a: 0xe8,
- // è
- 0x013b: 0xe2,
- // â
- 0x013c: 0xea,
- // ê
- 0x013d: 0xee,
- // î
- 0x013e: 0xf4,
- // ô
- 0x013f: 0xfb,
- // û
- 0x0220: 0xc1,
- // Á
- 0x0221: 0xc9,
- // É
- 0x0222: 0xd3,
- // Ó
- 0x0223: 0xda,
- // Ú
- 0x0224: 0xdc,
- // Ü
- 0x0225: 0xfc,
- // ü
- 0x0226: 0x2018,
- // ‘
- 0x0227: 0xa1,
- // ¡
- 0x0228: 0x2a,
- // *
- 0x0229: 0x27,
- // '
- 0x022a: 0x2014,
- // —
- 0x022b: 0xa9,
- // ©
- 0x022c: 0x2120,
- // ℠
- 0x022d: 0x2022,
- // •
- 0x022e: 0x201c,
- // “
- 0x022f: 0x201d,
- // ”
- 0x0230: 0xc0,
- // À
- 0x0231: 0xc2,
- // Â
- 0x0232: 0xc7,
- // Ç
- 0x0233: 0xc8,
- // È
- 0x0234: 0xca,
- // Ê
- 0x0235: 0xcb,
- // Ë
- 0x0236: 0xeb,
- // ë
- 0x0237: 0xce,
- // Î
- 0x0238: 0xcf,
- // Ï
- 0x0239: 0xef,
- // ï
- 0x023a: 0xd4,
- // Ô
- 0x023b: 0xd9,
- // Ù
- 0x023c: 0xf9,
- // ù
- 0x023d: 0xdb,
- // Û
- 0x023e: 0xab,
- // «
- 0x023f: 0xbb,
- // »
- 0x0320: 0xc3,
- // Ã
- 0x0321: 0xe3,
- // ã
- 0x0322: 0xcd,
- // Í
- 0x0323: 0xcc,
- // Ì
- 0x0324: 0xec,
- // ì
- 0x0325: 0xd2,
- // Ò
- 0x0326: 0xf2,
- // ò
- 0x0327: 0xd5,
- // Õ
- 0x0328: 0xf5,
- // õ
- 0x0329: 0x7b,
- // {
- 0x032a: 0x7d,
- // }
- 0x032b: 0x5c,
- // \
- 0x032c: 0x5e,
- // ^
- 0x032d: 0x5f,
- // _
- 0x032e: 0x7c,
- // |
- 0x032f: 0x7e,
- // ~
- 0x0330: 0xc4,
- // Ä
- 0x0331: 0xe4,
- // ä
- 0x0332: 0xd6,
- // Ö
- 0x0333: 0xf6,
- // ö
- 0x0334: 0xdf,
- // ß
- 0x0335: 0xa5,
- // ¥
- 0x0336: 0xa4,
- // ¤
- 0x0337: 0x2502,
- // │
- 0x0338: 0xc5,
- // Å
- 0x0339: 0xe5,
- // å
- 0x033a: 0xd8,
- // Ø
- 0x033b: 0xf8,
- // ø
- 0x033c: 0x250c,
- // ┌
- 0x033d: 0x2510,
- // ┐
- 0x033e: 0x2514,
- // └
- 0x033f: 0x2518 // ┘
- };
-
- var getCharFromCode = function (code) {
- if (code === null) {
- return '';
- }
- code = CHARACTER_TRANSLATION[code] || code;
- return String.fromCharCode(code);
- }; // the index of the last row in a CEA-608 display buffer
-
- var BOTTOM_ROW = 14; // This array is used for mapping PACs -> row #, since there's no way of
- // getting it through bit logic.
-
- var ROWS = [0x1100, 0x1120, 0x1200, 0x1220, 0x1500, 0x1520, 0x1600, 0x1620, 0x1700, 0x1720, 0x1000, 0x1300, 0x1320, 0x1400, 0x1420]; // CEA-608 captions are rendered onto a 34x15 matrix of character
- // cells. The "bottom" row is the last element in the outer array.
- // We keep track of positioning information as we go by storing the
- // number of indentations and the tab offset in this buffer.
-
- var createDisplayBuffer = function () {
- var result = [],
- i = BOTTOM_ROW + 1;
- while (i--) {
- result.push({
- text: '',
- indent: 0,
- offset: 0
- });
- }
- return result;
- };
- var Cea608Stream = function (field, dataChannel) {
- Cea608Stream.prototype.init.call(this);
- this.field_ = field || 0;
- this.dataChannel_ = dataChannel || 0;
- this.name_ = 'CC' + ((this.field_ << 1 | this.dataChannel_) + 1);
- this.setConstants();
- this.reset();
- this.push = function (packet) {
- var data, swap, char0, char1, text; // remove the parity bits
-
- data = packet.ccData & 0x7f7f; // ignore duplicate control codes; the spec demands they're sent twice
-
- if (data === this.lastControlCode_) {
- this.lastControlCode_ = null;
- return;
- } // Store control codes
-
- if ((data & 0xf000) === 0x1000) {
- this.lastControlCode_ = data;
- } else if (data !== this.PADDING_) {
- this.lastControlCode_ = null;
- }
- char0 = data >>> 8;
- char1 = data & 0xff;
- if (data === this.PADDING_) {
- return;
- } else if (data === this.RESUME_CAPTION_LOADING_) {
- this.mode_ = 'popOn';
- } else if (data === this.END_OF_CAPTION_) {
- // If an EOC is received while in paint-on mode, the displayed caption
- // text should be swapped to non-displayed memory as if it was a pop-on
- // caption. Because of that, we should explicitly switch back to pop-on
- // mode
- this.mode_ = 'popOn';
- this.clearFormatting(packet.pts); // if a caption was being displayed, it's gone now
-
- this.flushDisplayed(packet.pts); // flip memory
-
- swap = this.displayed_;
- this.displayed_ = this.nonDisplayed_;
- this.nonDisplayed_ = swap; // start measuring the time to display the caption
-
- this.startPts_ = packet.pts;
- } else if (data === this.ROLL_UP_2_ROWS_) {
- this.rollUpRows_ = 2;
- this.setRollUp(packet.pts);
- } else if (data === this.ROLL_UP_3_ROWS_) {
- this.rollUpRows_ = 3;
- this.setRollUp(packet.pts);
- } else if (data === this.ROLL_UP_4_ROWS_) {
- this.rollUpRows_ = 4;
- this.setRollUp(packet.pts);
- } else if (data === this.CARRIAGE_RETURN_) {
- this.clearFormatting(packet.pts);
- this.flushDisplayed(packet.pts);
- this.shiftRowsUp_();
- this.startPts_ = packet.pts;
- } else if (data === this.BACKSPACE_) {
- if (this.mode_ === 'popOn') {
- this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
- } else {
- this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
- }
- } else if (data === this.ERASE_DISPLAYED_MEMORY_) {
- this.flushDisplayed(packet.pts);
- this.displayed_ = createDisplayBuffer();
- } else if (data === this.ERASE_NON_DISPLAYED_MEMORY_) {
- this.nonDisplayed_ = createDisplayBuffer();
- } else if (data === this.RESUME_DIRECT_CAPTIONING_) {
- if (this.mode_ !== 'paintOn') {
- // NOTE: This should be removed when proper caption positioning is
- // implemented
- this.flushDisplayed(packet.pts);
- this.displayed_ = createDisplayBuffer();
- }
- this.mode_ = 'paintOn';
- this.startPts_ = packet.pts; // Append special characters to caption text
- } else if (this.isSpecialCharacter(char0, char1)) {
- // Bitmask char0 so that we can apply character transformations
- // regardless of field and data channel.
- // Then byte-shift to the left and OR with char1 so we can pass the
- // entire character code to `getCharFromCode`.
- char0 = (char0 & 0x03) << 8;
- text = getCharFromCode(char0 | char1);
- this[this.mode_](packet.pts, text);
- this.column_++; // Append extended characters to caption text
- } else if (this.isExtCharacter(char0, char1)) {
- // Extended characters always follow their "non-extended" equivalents.
- // IE if a "è" is desired, you'll always receive "eè"; non-compliant
- // decoders are supposed to drop the "è", while compliant decoders
- // backspace the "e" and insert "è".
- // Delete the previous character
- if (this.mode_ === 'popOn') {
- this.nonDisplayed_[this.row_].text = this.nonDisplayed_[this.row_].text.slice(0, -1);
- } else {
- this.displayed_[this.row_].text = this.displayed_[this.row_].text.slice(0, -1);
- } // Bitmask char0 so that we can apply character transformations
- // regardless of field and data channel.
- // Then byte-shift to the left and OR with char1 so we can pass the
- // entire character code to `getCharFromCode`.
-
- char0 = (char0 & 0x03) << 8;
- text = getCharFromCode(char0 | char1);
- this[this.mode_](packet.pts, text);
- this.column_++; // Process mid-row codes
- } else if (this.isMidRowCode(char0, char1)) {
- // Attributes are not additive, so clear all formatting
- this.clearFormatting(packet.pts); // According to the standard, mid-row codes
- // should be replaced with spaces, so add one now
-
- this[this.mode_](packet.pts, ' ');
- this.column_++;
- if ((char1 & 0xe) === 0xe) {
- this.addFormatting(packet.pts, ['i']);
- }
- if ((char1 & 0x1) === 0x1) {
- this.addFormatting(packet.pts, ['u']);
- } // Detect offset control codes and adjust cursor
- } else if (this.isOffsetControlCode(char0, char1)) {
- // Cursor position is set by indent PAC (see below) in 4-column
- // increments, with an additional offset code of 1-3 to reach any
- // of the 32 columns specified by CEA-608. So all we need to do
- // here is increment the column cursor by the given offset.
- const offset = char1 & 0x03; // For an offest value 1-3, set the offset for that caption
- // in the non-displayed array.
-
- this.nonDisplayed_[this.row_].offset = offset;
- this.column_ += offset; // Detect PACs (Preamble Address Codes)
- } else if (this.isPAC(char0, char1)) {
- // There's no logic for PAC -> row mapping, so we have to just
- // find the row code in an array and use its index :(
- var row = ROWS.indexOf(data & 0x1f20); // Configure the caption window if we're in roll-up mode
-
- if (this.mode_ === 'rollUp') {
- // This implies that the base row is incorrectly set.
- // As per the recommendation in CEA-608(Base Row Implementation), defer to the number
- // of roll-up rows set.
- if (row - this.rollUpRows_ + 1 < 0) {
- row = this.rollUpRows_ - 1;
- }
- this.setRollUp(packet.pts, row);
- } // Ensure the row is between 0 and 14, otherwise use the most
- // recent or default row.
-
- if (row !== this.row_ && row >= 0 && row <= 14) {
- // formatting is only persistent for current row
- this.clearFormatting(packet.pts);
- this.row_ = row;
- } // All PACs can apply underline, so detect and apply
- // (All odd-numbered second bytes set underline)
-
- if (char1 & 0x1 && this.formatting_.indexOf('u') === -1) {
- this.addFormatting(packet.pts, ['u']);
- }
- if ((data & 0x10) === 0x10) {
- // We've got an indent level code. Each successive even number
- // increments the column cursor by 4, so we can get the desired
- // column position by bit-shifting to the right (to get n/2)
- // and multiplying by 4.
- const indentations = (data & 0xe) >> 1;
- this.column_ = indentations * 4; // add to the number of indentations for positioning
-
- this.nonDisplayed_[this.row_].indent += indentations;
- }
- if (this.isColorPAC(char1)) {
- // it's a color code, though we only support white, which
- // can be either normal or italicized. white italics can be
- // either 0x4e or 0x6e depending on the row, so we just
- // bitwise-and with 0xe to see if italics should be turned on
- if ((char1 & 0xe) === 0xe) {
- this.addFormatting(packet.pts, ['i']);
- }
- } // We have a normal character in char0, and possibly one in char1
- } else if (this.isNormalChar(char0)) {
- if (char1 === 0x00) {
- char1 = null;
- }
- text = getCharFromCode(char0);
- text += getCharFromCode(char1);
- this[this.mode_](packet.pts, text);
- this.column_ += text.length;
- } // finish data processing
- };
- };
-
- Cea608Stream.prototype = new Stream$7(); // Trigger a cue point that captures the current state of the
- // display buffer
-
- Cea608Stream.prototype.flushDisplayed = function (pts) {
- const logWarning = index => {
- this.trigger('log', {
- level: 'warn',
- message: 'Skipping a malformed 608 caption at index ' + index + '.'
- });
- };
- const content = [];
- this.displayed_.forEach((row, i) => {
- if (row && row.text && row.text.length) {
- try {
- // remove spaces from the start and end of the string
- row.text = row.text.trim();
- } catch (e) {
- // Ordinarily, this shouldn't happen. However, caption
- // parsing errors should not throw exceptions and
- // break playback.
- logWarning(i);
- } // See the below link for more details on the following fields:
- // https://dvcs.w3.org/hg/text-tracks/raw-file/default/608toVTT/608toVTT.html#positioning-in-cea-608
-
- if (row.text.length) {
- content.push({
- // The text to be displayed in the caption from this specific row, with whitespace removed.
- text: row.text,
- // Value between 1 and 15 representing the PAC row used to calculate line height.
- line: i + 1,
- // A number representing the indent position by percentage (CEA-608 PAC indent code).
- // The value will be a number between 10 and 80. Offset is used to add an aditional
- // value to the position if necessary.
- position: 10 + Math.min(70, row.indent * 10) + row.offset * 2.5
- });
- }
- } else if (row === undefined || row === null) {
- logWarning(i);
- }
- });
- if (content.length) {
- this.trigger('data', {
- startPts: this.startPts_,
- endPts: pts,
- content,
- stream: this.name_
- });
- }
- };
- /**
- * Zero out the data, used for startup and on seek
- */
-
- Cea608Stream.prototype.reset = function () {
- this.mode_ = 'popOn'; // When in roll-up mode, the index of the last row that will
- // actually display captions. If a caption is shifted to a row
- // with a lower index than this, it is cleared from the display
- // buffer
-
- this.topRow_ = 0;
- this.startPts_ = 0;
- this.displayed_ = createDisplayBuffer();
- this.nonDisplayed_ = createDisplayBuffer();
- this.lastControlCode_ = null; // Track row and column for proper line-breaking and spacing
-
- this.column_ = 0;
- this.row_ = BOTTOM_ROW;
- this.rollUpRows_ = 2; // This variable holds currently-applied formatting
-
- this.formatting_ = [];
- };
- /**
- * Sets up control code and related constants for this instance
- */
-
- Cea608Stream.prototype.setConstants = function () {
- // The following attributes have these uses:
- // ext_ : char0 for mid-row codes, and the base for extended
- // chars (ext_+0, ext_+1, and ext_+2 are char0s for
- // extended codes)
- // control_: char0 for control codes, except byte-shifted to the
- // left so that we can do this.control_ | CONTROL_CODE
- // offset_: char0 for tab offset codes
- //
- // It's also worth noting that control codes, and _only_ control codes,
- // differ between field 1 and field2. Field 2 control codes are always
- // their field 1 value plus 1. That's why there's the "| field" on the
- // control value.
- if (this.dataChannel_ === 0) {
- this.BASE_ = 0x10;
- this.EXT_ = 0x11;
- this.CONTROL_ = (0x14 | this.field_) << 8;
- this.OFFSET_ = 0x17;
- } else if (this.dataChannel_ === 1) {
- this.BASE_ = 0x18;
- this.EXT_ = 0x19;
- this.CONTROL_ = (0x1c | this.field_) << 8;
- this.OFFSET_ = 0x1f;
- } // Constants for the LSByte command codes recognized by Cea608Stream. This
- // list is not exhaustive. For a more comprehensive listing and semantics see
- // http://www.gpo.gov/fdsys/pkg/CFR-2010-title47-vol1/pdf/CFR-2010-title47-vol1-sec15-119.pdf
- // Padding
-
- this.PADDING_ = 0x0000; // Pop-on Mode
-
- this.RESUME_CAPTION_LOADING_ = this.CONTROL_ | 0x20;
- this.END_OF_CAPTION_ = this.CONTROL_ | 0x2f; // Roll-up Mode
-
- this.ROLL_UP_2_ROWS_ = this.CONTROL_ | 0x25;
- this.ROLL_UP_3_ROWS_ = this.CONTROL_ | 0x26;
- this.ROLL_UP_4_ROWS_ = this.CONTROL_ | 0x27;
- this.CARRIAGE_RETURN_ = this.CONTROL_ | 0x2d; // paint-on mode
-
- this.RESUME_DIRECT_CAPTIONING_ = this.CONTROL_ | 0x29; // Erasure
-
- this.BACKSPACE_ = this.CONTROL_ | 0x21;
- this.ERASE_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2c;
- this.ERASE_NON_DISPLAYED_MEMORY_ = this.CONTROL_ | 0x2e;
- };
- /**
- * Detects if the 2-byte packet data is a special character
- *
- * Special characters have a second byte in the range 0x30 to 0x3f,
- * with the first byte being 0x11 (for data channel 1) or 0x19 (for
- * data channel 2).
- *
- * @param {Integer} char0 The first byte
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the 2 bytes are an special character
- */
-
- Cea608Stream.prototype.isSpecialCharacter = function (char0, char1) {
- return char0 === this.EXT_ && char1 >= 0x30 && char1 <= 0x3f;
- };
- /**
- * Detects if the 2-byte packet data is an extended character
- *
- * Extended characters have a second byte in the range 0x20 to 0x3f,
- * with the first byte being 0x12 or 0x13 (for data channel 1) or
- * 0x1a or 0x1b (for data channel 2).
- *
- * @param {Integer} char0 The first byte
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the 2 bytes are an extended character
- */
-
- Cea608Stream.prototype.isExtCharacter = function (char0, char1) {
- return (char0 === this.EXT_ + 1 || char0 === this.EXT_ + 2) && char1 >= 0x20 && char1 <= 0x3f;
- };
- /**
- * Detects if the 2-byte packet is a mid-row code
- *
- * Mid-row codes have a second byte in the range 0x20 to 0x2f, with
- * the first byte being 0x11 (for data channel 1) or 0x19 (for data
- * channel 2).
- *
- * @param {Integer} char0 The first byte
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the 2 bytes are a mid-row code
- */
-
- Cea608Stream.prototype.isMidRowCode = function (char0, char1) {
- return char0 === this.EXT_ && char1 >= 0x20 && char1 <= 0x2f;
- };
- /**
- * Detects if the 2-byte packet is an offset control code
- *
- * Offset control codes have a second byte in the range 0x21 to 0x23,
- * with the first byte being 0x17 (for data channel 1) or 0x1f (for
- * data channel 2).
- *
- * @param {Integer} char0 The first byte
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the 2 bytes are an offset control code
- */
-
- Cea608Stream.prototype.isOffsetControlCode = function (char0, char1) {
- return char0 === this.OFFSET_ && char1 >= 0x21 && char1 <= 0x23;
- };
- /**
- * Detects if the 2-byte packet is a Preamble Address Code
- *
- * PACs have a first byte in the range 0x10 to 0x17 (for data channel 1)
- * or 0x18 to 0x1f (for data channel 2), with the second byte in the
- * range 0x40 to 0x7f.
- *
- * @param {Integer} char0 The first byte
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the 2 bytes are a PAC
- */
-
- Cea608Stream.prototype.isPAC = function (char0, char1) {
- return char0 >= this.BASE_ && char0 < this.BASE_ + 8 && char1 >= 0x40 && char1 <= 0x7f;
- };
- /**
- * Detects if a packet's second byte is in the range of a PAC color code
- *
- * PAC color codes have the second byte be in the range 0x40 to 0x4f, or
- * 0x60 to 0x6f.
- *
- * @param {Integer} char1 The second byte
- * @return {Boolean} Whether the byte is a color PAC
- */
-
- Cea608Stream.prototype.isColorPAC = function (char1) {
- return char1 >= 0x40 && char1 <= 0x4f || char1 >= 0x60 && char1 <= 0x7f;
- };
- /**
- * Detects if a single byte is in the range of a normal character
- *
- * Normal text bytes are in the range 0x20 to 0x7f.
- *
- * @param {Integer} char The byte
- * @return {Boolean} Whether the byte is a normal character
- */
-
- Cea608Stream.prototype.isNormalChar = function (char) {
- return char >= 0x20 && char <= 0x7f;
- };
- /**
- * Configures roll-up
- *
- * @param {Integer} pts Current PTS
- * @param {Integer} newBaseRow Used by PACs to slide the current window to
- * a new position
- */
-
- Cea608Stream.prototype.setRollUp = function (pts, newBaseRow) {
- // Reset the base row to the bottom row when switching modes
- if (this.mode_ !== 'rollUp') {
- this.row_ = BOTTOM_ROW;
- this.mode_ = 'rollUp'; // Spec says to wipe memories when switching to roll-up
-
- this.flushDisplayed(pts);
- this.nonDisplayed_ = createDisplayBuffer();
- this.displayed_ = createDisplayBuffer();
- }
- if (newBaseRow !== undefined && newBaseRow !== this.row_) {
- // move currently displayed captions (up or down) to the new base row
- for (var i = 0; i < this.rollUpRows_; i++) {
- this.displayed_[newBaseRow - i] = this.displayed_[this.row_ - i];
- this.displayed_[this.row_ - i] = {
- text: '',
- indent: 0,
- offset: 0
- };
- }
- }
- if (newBaseRow === undefined) {
- newBaseRow = this.row_;
- }
- this.topRow_ = newBaseRow - this.rollUpRows_ + 1;
- }; // Adds the opening HTML tag for the passed character to the caption text,
- // and keeps track of it for later closing
-
- Cea608Stream.prototype.addFormatting = function (pts, format) {
- this.formatting_ = this.formatting_.concat(format);
- var text = format.reduce(function (text, format) {
- return text + '<' + format + '>';
- }, '');
- this[this.mode_](pts, text);
- }; // Adds HTML closing tags for current formatting to caption text and
- // clears remembered formatting
-
- Cea608Stream.prototype.clearFormatting = function (pts) {
- if (!this.formatting_.length) {
- return;
- }
- var text = this.formatting_.reverse().reduce(function (text, format) {
- return text + '</' + format + '>';
- }, '');
- this.formatting_ = [];
- this[this.mode_](pts, text);
- }; // Mode Implementations
-
- Cea608Stream.prototype.popOn = function (pts, text) {
- var baseRow = this.nonDisplayed_[this.row_].text; // buffer characters
-
- baseRow += text;
- this.nonDisplayed_[this.row_].text = baseRow;
- };
- Cea608Stream.prototype.rollUp = function (pts, text) {
- var baseRow = this.displayed_[this.row_].text;
- baseRow += text;
- this.displayed_[this.row_].text = baseRow;
- };
- Cea608Stream.prototype.shiftRowsUp_ = function () {
- var i; // clear out inactive rows
-
- for (i = 0; i < this.topRow_; i++) {
- this.displayed_[i] = {
- text: '',
- indent: 0,
- offset: 0
- };
- }
- for (i = this.row_ + 1; i < BOTTOM_ROW + 1; i++) {
- this.displayed_[i] = {
- text: '',
- indent: 0,
- offset: 0
- };
- } // shift displayed rows up
-
- for (i = this.topRow_; i < this.row_; i++) {
- this.displayed_[i] = this.displayed_[i + 1];
- } // clear out the bottom row
-
- this.displayed_[this.row_] = {
- text: '',
- indent: 0,
- offset: 0
- };
- };
- Cea608Stream.prototype.paintOn = function (pts, text) {
- var baseRow = this.displayed_[this.row_].text;
- baseRow += text;
- this.displayed_[this.row_].text = baseRow;
- }; // exports
-
- var captionStream = {
- CaptionStream: CaptionStream$2,
- Cea608Stream: Cea608Stream,
- Cea708Stream: Cea708Stream
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var streamTypes = {
- H264_STREAM_TYPE: 0x1B,
- ADTS_STREAM_TYPE: 0x0F,
- METADATA_STREAM_TYPE: 0x15
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Accepts program elementary stream (PES) data events and corrects
- * decode and presentation time stamps to account for a rollover
- * of the 33 bit value.
- */
-
- var Stream$6 = stream;
- var MAX_TS = 8589934592;
- var RO_THRESH = 4294967296;
- var TYPE_SHARED = 'shared';
- var handleRollover$1 = function (value, reference) {
- var direction = 1;
- if (value > reference) {
- // If the current timestamp value is greater than our reference timestamp and we detect a
- // timestamp rollover, this means the roll over is happening in the opposite direction.
- // Example scenario: Enter a long stream/video just after a rollover occurred. The reference
- // point will be set to a small number, e.g. 1. The user then seeks backwards over the
- // rollover point. In loading this segment, the timestamp values will be very large,
- // e.g. 2^33 - 1. Since this comes before the data we loaded previously, we want to adjust
- // the time stamp to be `value - 2^33`.
- direction = -1;
- } // Note: A seek forwards or back that is greater than the RO_THRESH (2^32, ~13 hours) will
- // cause an incorrect adjustment.
-
- while (Math.abs(reference - value) > RO_THRESH) {
- value += direction * MAX_TS;
- }
- return value;
- };
- var TimestampRolloverStream$1 = function (type) {
- var lastDTS, referenceDTS;
- TimestampRolloverStream$1.prototype.init.call(this); // The "shared" type is used in cases where a stream will contain muxed
- // video and audio. We could use `undefined` here, but having a string
- // makes debugging a little clearer.
-
- this.type_ = type || TYPE_SHARED;
- this.push = function (data) {
- /**
- * Rollover stream expects data from elementary stream.
- * Elementary stream can push forward 2 types of data
- * - Parsed Video/Audio/Timed-metadata PES (packetized elementary stream) packets
- * - Tracks metadata from PMT (Program Map Table)
- * Rollover stream expects pts/dts info to be available, since it stores lastDTS
- * We should ignore non-PES packets since they may override lastDTS to undefined.
- * lastDTS is important to signal the next segments
- * about rollover from the previous segments.
- */
- if (data.type === 'metadata') {
- this.trigger('data', data);
- return;
- } // Any "shared" rollover streams will accept _all_ data. Otherwise,
- // streams will only accept data that matches their type.
-
- if (this.type_ !== TYPE_SHARED && data.type !== this.type_) {
- return;
- }
- if (referenceDTS === undefined) {
- referenceDTS = data.dts;
- }
- data.dts = handleRollover$1(data.dts, referenceDTS);
- data.pts = handleRollover$1(data.pts, referenceDTS);
- lastDTS = data.dts;
- this.trigger('data', data);
- };
- this.flush = function () {
- referenceDTS = lastDTS;
- this.trigger('done');
- };
- this.endTimeline = function () {
- this.flush();
- this.trigger('endedtimeline');
- };
- this.discontinuity = function () {
- referenceDTS = void 0;
- lastDTS = void 0;
- };
- this.reset = function () {
- this.discontinuity();
- this.trigger('reset');
- };
- };
- TimestampRolloverStream$1.prototype = new Stream$6();
- var timestampRolloverStream = {
- TimestampRolloverStream: TimestampRolloverStream$1,
- handleRollover: handleRollover$1
- }; // Once IE11 support is dropped, this function should be removed.
-
- var typedArrayIndexOf$1 = (typedArray, element, fromIndex) => {
- if (!typedArray) {
- return -1;
- }
- var currentIndex = fromIndex;
- for (; currentIndex < typedArray.length; currentIndex++) {
- if (typedArray[currentIndex] === element) {
- return currentIndex;
- }
- }
- return -1;
- };
- var typedArray = {
- typedArrayIndexOf: typedArrayIndexOf$1
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Tools for parsing ID3 frame data
- * @see http://id3.org/id3v2.3.0
- */
-
- var typedArrayIndexOf = typedArray.typedArrayIndexOf,
- // Frames that allow different types of text encoding contain a text
- // encoding description byte [ID3v2.4.0 section 4.]
- textEncodingDescriptionByte = {
- Iso88591: 0x00,
- // ISO-8859-1, terminated with \0.
- Utf16: 0x01,
- // UTF-16 encoded Unicode BOM, terminated with \0\0
- Utf16be: 0x02,
- // UTF-16BE encoded Unicode, without BOM, terminated with \0\0
- Utf8: 0x03 // UTF-8 encoded Unicode, terminated with \0
- },
- // return a percent-encoded representation of the specified byte range
- // @see http://en.wikipedia.org/wiki/Percent-encoding
- percentEncode$1 = function (bytes, start, end) {
- var i,
- result = '';
- for (i = start; i < end; i++) {
- result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
- }
- return result;
- },
- // return the string representation of the specified byte range,
- // interpreted as UTf-8.
- parseUtf8 = function (bytes, start, end) {
- return decodeURIComponent(percentEncode$1(bytes, start, end));
- },
- // return the string representation of the specified byte range,
- // interpreted as ISO-8859-1.
- parseIso88591$1 = function (bytes, start, end) {
- return unescape(percentEncode$1(bytes, start, end)); // jshint ignore:line
- },
- parseSyncSafeInteger$1 = function (data) {
- return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
- },
- frameParsers = {
- 'APIC': function (frame) {
- var i = 1,
- mimeTypeEndIndex,
- descriptionEndIndex,
- LINK_MIME_TYPE = '-->';
- if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
- // ignore frames with unrecognized character encodings
- return;
- } // parsing fields [ID3v2.4.0 section 4.14.]
-
- mimeTypeEndIndex = typedArrayIndexOf(frame.data, 0, i);
- if (mimeTypeEndIndex < 0) {
- // malformed frame
- return;
- } // parsing Mime type field (terminated with \0)
-
- frame.mimeType = parseIso88591$1(frame.data, i, mimeTypeEndIndex);
- i = mimeTypeEndIndex + 1; // parsing 1-byte Picture Type field
-
- frame.pictureType = frame.data[i];
- i++;
- descriptionEndIndex = typedArrayIndexOf(frame.data, 0, i);
- if (descriptionEndIndex < 0) {
- // malformed frame
- return;
- } // parsing Description field (terminated with \0)
-
- frame.description = parseUtf8(frame.data, i, descriptionEndIndex);
- i = descriptionEndIndex + 1;
- if (frame.mimeType === LINK_MIME_TYPE) {
- // parsing Picture Data field as URL (always represented as ISO-8859-1 [ID3v2.4.0 section 4.])
- frame.url = parseIso88591$1(frame.data, i, frame.data.length);
- } else {
- // parsing Picture Data field as binary data
- frame.pictureData = frame.data.subarray(i, frame.data.length);
- }
- },
- 'T*': function (frame) {
- if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
- // ignore frames with unrecognized character encodings
- return;
- } // parse text field, do not include null terminator in the frame value
- // frames that allow different types of encoding contain terminated text [ID3v2.4.0 section 4.]
-
- frame.value = parseUtf8(frame.data, 1, frame.data.length).replace(/\0*$/, ''); // text information frames supports multiple strings, stored as a terminator separated list [ID3v2.4.0 section 4.2.]
-
- frame.values = frame.value.split('\0');
- },
- 'TXXX': function (frame) {
- var descriptionEndIndex;
- if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
- // ignore frames with unrecognized character encodings
- return;
- }
- descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
- if (descriptionEndIndex === -1) {
- return;
- } // parse the text fields
-
- frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // do not include the null terminator in the tag value
- // frames that allow different types of encoding contain terminated text
- // [ID3v2.4.0 section 4.]
-
- frame.value = parseUtf8(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0*$/, '');
- frame.data = frame.value;
- },
- 'W*': function (frame) {
- // parse URL field; URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
- // if the value is followed by a string termination all the following information should be ignored [ID3v2.4.0 section 4.3]
- frame.url = parseIso88591$1(frame.data, 0, frame.data.length).replace(/\0.*$/, '');
- },
- 'WXXX': function (frame) {
- var descriptionEndIndex;
- if (frame.data[0] !== textEncodingDescriptionByte.Utf8) {
- // ignore frames with unrecognized character encodings
- return;
- }
- descriptionEndIndex = typedArrayIndexOf(frame.data, 0, 1);
- if (descriptionEndIndex === -1) {
- return;
- } // parse the description and URL fields
-
- frame.description = parseUtf8(frame.data, 1, descriptionEndIndex); // URL fields are always represented as ISO-8859-1 [ID3v2.4.0 section 4.]
- // if the value is followed by a string termination all the following information
- // should be ignored [ID3v2.4.0 section 4.3]
-
- frame.url = parseIso88591$1(frame.data, descriptionEndIndex + 1, frame.data.length).replace(/\0.*$/, '');
- },
- 'PRIV': function (frame) {
- var i;
- for (i = 0; i < frame.data.length; i++) {
- if (frame.data[i] === 0) {
- // parse the description and URL fields
- frame.owner = parseIso88591$1(frame.data, 0, i);
- break;
- }
- }
- frame.privateData = frame.data.subarray(i + 1);
- frame.data = frame.privateData;
- }
- };
- var parseId3Frames$1 = function (data) {
- var frameSize,
- frameHeader,
- frameStart = 10,
- tagSize = 0,
- frames = []; // If we don't have enough data for a header, 10 bytes,
- // or 'ID3' in the first 3 bytes this is not a valid ID3 tag.
-
- if (data.length < 10 || data[0] !== 'I'.charCodeAt(0) || data[1] !== 'D'.charCodeAt(0) || data[2] !== '3'.charCodeAt(0)) {
- return;
- } // the frame size is transmitted as a 28-bit integer in the
- // last four bytes of the ID3 header.
- // The most significant bit of each byte is dropped and the
- // results concatenated to recover the actual value.
-
- tagSize = parseSyncSafeInteger$1(data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more
- // convenient for our comparisons to include it
-
- tagSize += 10; // check bit 6 of byte 5 for the extended header flag.
-
- var hasExtendedHeader = data[5] & 0x40;
- if (hasExtendedHeader) {
- // advance the frame start past the extended header
- frameStart += 4; // header size field
-
- frameStart += parseSyncSafeInteger$1(data.subarray(10, 14));
- tagSize -= parseSyncSafeInteger$1(data.subarray(16, 20)); // clip any padding off the end
- } // parse one or more ID3 frames
- // http://id3.org/id3v2.3.0#ID3v2_frame_overview
-
- do {
- // determine the number of bytes in this frame
- frameSize = parseSyncSafeInteger$1(data.subarray(frameStart + 4, frameStart + 8));
- if (frameSize < 1) {
- break;
- }
- frameHeader = String.fromCharCode(data[frameStart], data[frameStart + 1], data[frameStart + 2], data[frameStart + 3]);
- var frame = {
- id: frameHeader,
- data: data.subarray(frameStart + 10, frameStart + frameSize + 10)
- };
- frame.key = frame.id; // parse frame values
-
- if (frameParsers[frame.id]) {
- // use frame specific parser
- frameParsers[frame.id](frame);
- } else if (frame.id[0] === 'T') {
- // use text frame generic parser
- frameParsers['T*'](frame);
- } else if (frame.id[0] === 'W') {
- // use URL link frame generic parser
- frameParsers['W*'](frame);
- }
- frames.push(frame);
- frameStart += 10; // advance past the frame header
-
- frameStart += frameSize; // advance past the frame body
- } while (frameStart < tagSize);
- return frames;
- };
- var parseId3 = {
- parseId3Frames: parseId3Frames$1,
- parseSyncSafeInteger: parseSyncSafeInteger$1,
- frameParsers: frameParsers
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Accepts program elementary stream (PES) data events and parses out
- * ID3 metadata from them, if present.
- * @see http://id3.org/id3v2.3.0
- */
-
- var Stream$5 = stream,
- StreamTypes$3 = streamTypes,
- id3 = parseId3,
- MetadataStream;
- MetadataStream = function (options) {
- var settings = {
- // the bytes of the program-level descriptor field in MP2T
- // see ISO/IEC 13818-1:2013 (E), section 2.6 "Program and
- // program element descriptors"
- descriptor: options && options.descriptor
- },
- // the total size in bytes of the ID3 tag being parsed
- tagSize = 0,
- // tag data that is not complete enough to be parsed
- buffer = [],
- // the total number of bytes currently in the buffer
- bufferSize = 0,
- i;
- MetadataStream.prototype.init.call(this); // calculate the text track in-band metadata track dispatch type
- // https://html.spec.whatwg.org/multipage/embedded-content.html#steps-to-expose-a-media-resource-specific-text-track
-
- this.dispatchType = StreamTypes$3.METADATA_STREAM_TYPE.toString(16);
- if (settings.descriptor) {
- for (i = 0; i < settings.descriptor.length; i++) {
- this.dispatchType += ('00' + settings.descriptor[i].toString(16)).slice(-2);
- }
- }
- this.push = function (chunk) {
- var tag, frameStart, frameSize, frame, i, frameHeader;
- if (chunk.type !== 'timed-metadata') {
- return;
- } // if data_alignment_indicator is set in the PES header,
- // we must have the start of a new ID3 tag. Assume anything
- // remaining in the buffer was malformed and throw it out
-
- if (chunk.dataAlignmentIndicator) {
- bufferSize = 0;
- buffer.length = 0;
- } // ignore events that don't look like ID3 data
-
- if (buffer.length === 0 && (chunk.data.length < 10 || chunk.data[0] !== 'I'.charCodeAt(0) || chunk.data[1] !== 'D'.charCodeAt(0) || chunk.data[2] !== '3'.charCodeAt(0))) {
- this.trigger('log', {
- level: 'warn',
- message: 'Skipping unrecognized metadata packet'
- });
- return;
- } // add this chunk to the data we've collected so far
-
- buffer.push(chunk);
- bufferSize += chunk.data.byteLength; // grab the size of the entire frame from the ID3 header
-
- if (buffer.length === 1) {
- // the frame size is transmitted as a 28-bit integer in the
- // last four bytes of the ID3 header.
- // The most significant bit of each byte is dropped and the
- // results concatenated to recover the actual value.
- tagSize = id3.parseSyncSafeInteger(chunk.data.subarray(6, 10)); // ID3 reports the tag size excluding the header but it's more
- // convenient for our comparisons to include it
-
- tagSize += 10;
- } // if the entire frame has not arrived, wait for more data
-
- if (bufferSize < tagSize) {
- return;
- } // collect the entire frame so it can be parsed
-
- tag = {
- data: new Uint8Array(tagSize),
- frames: [],
- pts: buffer[0].pts,
- dts: buffer[0].dts
- };
- for (i = 0; i < tagSize;) {
- tag.data.set(buffer[0].data.subarray(0, tagSize - i), i);
- i += buffer[0].data.byteLength;
- bufferSize -= buffer[0].data.byteLength;
- buffer.shift();
- } // find the start of the first frame and the end of the tag
-
- frameStart = 10;
- if (tag.data[5] & 0x40) {
- // advance the frame start past the extended header
- frameStart += 4; // header size field
-
- frameStart += id3.parseSyncSafeInteger(tag.data.subarray(10, 14)); // clip any padding off the end
-
- tagSize -= id3.parseSyncSafeInteger(tag.data.subarray(16, 20));
- } // parse one or more ID3 frames
- // http://id3.org/id3v2.3.0#ID3v2_frame_overview
-
- do {
- // determine the number of bytes in this frame
- frameSize = id3.parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
- if (frameSize < 1) {
- this.trigger('log', {
- level: 'warn',
- message: 'Malformed ID3 frame encountered. Skipping remaining metadata parsing.'
- }); // If the frame is malformed, don't parse any further frames but allow previous valid parsed frames
- // to be sent along.
-
- break;
- }
- frameHeader = String.fromCharCode(tag.data[frameStart], tag.data[frameStart + 1], tag.data[frameStart + 2], tag.data[frameStart + 3]);
- frame = {
- id: frameHeader,
- data: tag.data.subarray(frameStart + 10, frameStart + frameSize + 10)
- };
- frame.key = frame.id; // parse frame values
-
- if (id3.frameParsers[frame.id]) {
- // use frame specific parser
- id3.frameParsers[frame.id](frame);
- } else if (frame.id[0] === 'T') {
- // use text frame generic parser
- id3.frameParsers['T*'](frame);
- } else if (frame.id[0] === 'W') {
- // use URL link frame generic parser
- id3.frameParsers['W*'](frame);
- } // handle the special PRIV frame used to indicate the start
- // time for raw AAC data
-
- if (frame.owner === 'com.apple.streaming.transportStreamTimestamp') {
- var d = frame.data,
- size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;
- size *= 4;
- size += d[7] & 0x03;
- frame.timeStamp = size; // in raw AAC, all subsequent data will be timestamped based
- // on the value of this frame
- // we couldn't have known the appropriate pts and dts before
- // parsing this ID3 tag so set those values now
-
- if (tag.pts === undefined && tag.dts === undefined) {
- tag.pts = frame.timeStamp;
- tag.dts = frame.timeStamp;
- }
- this.trigger('timestamp', frame);
- }
- tag.frames.push(frame);
- frameStart += 10; // advance past the frame header
-
- frameStart += frameSize; // advance past the frame body
- } while (frameStart < tagSize);
- this.trigger('data', tag);
- };
- };
- MetadataStream.prototype = new Stream$5();
- var metadataStream = MetadataStream;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * A stream-based mp2t to mp4 converter. This utility can be used to
- * deliver mp4s to a SourceBuffer on platforms that support native
- * Media Source Extensions.
- */
-
- var Stream$4 = stream,
- CaptionStream$1 = captionStream,
- StreamTypes$2 = streamTypes,
- TimestampRolloverStream = timestampRolloverStream.TimestampRolloverStream; // object types
-
- var TransportPacketStream, TransportParseStream, ElementaryStream; // constants
-
- var MP2T_PACKET_LENGTH$1 = 188,
- // bytes
- SYNC_BYTE$1 = 0x47;
- /**
- * Splits an incoming stream of binary data into MPEG-2 Transport
- * Stream packets.
- */
-
- TransportPacketStream = function () {
- var buffer = new Uint8Array(MP2T_PACKET_LENGTH$1),
- bytesInBuffer = 0;
- TransportPacketStream.prototype.init.call(this); // Deliver new bytes to the stream.
-
- /**
- * Split a stream of data into M2TS packets
- **/
-
- this.push = function (bytes) {
- var startIndex = 0,
- endIndex = MP2T_PACKET_LENGTH$1,
- everything; // If there are bytes remaining from the last segment, prepend them to the
- // bytes that were pushed in
-
- if (bytesInBuffer) {
- everything = new Uint8Array(bytes.byteLength + bytesInBuffer);
- everything.set(buffer.subarray(0, bytesInBuffer));
- everything.set(bytes, bytesInBuffer);
- bytesInBuffer = 0;
- } else {
- everything = bytes;
- } // While we have enough data for a packet
-
- while (endIndex < everything.byteLength) {
- // Look for a pair of start and end sync bytes in the data..
- if (everything[startIndex] === SYNC_BYTE$1 && everything[endIndex] === SYNC_BYTE$1) {
- // We found a packet so emit it and jump one whole packet forward in
- // the stream
- this.trigger('data', everything.subarray(startIndex, endIndex));
- startIndex += MP2T_PACKET_LENGTH$1;
- endIndex += MP2T_PACKET_LENGTH$1;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex++;
- endIndex++;
- } // If there was some data left over at the end of the segment that couldn't
- // possibly be a whole packet, keep it because it might be the start of a packet
- // that continues in the next segment
-
- if (startIndex < everything.byteLength) {
- buffer.set(everything.subarray(startIndex), 0);
- bytesInBuffer = everything.byteLength - startIndex;
- }
- };
- /**
- * Passes identified M2TS packets to the TransportParseStream to be parsed
- **/
-
- this.flush = function () {
- // If the buffer contains a whole packet when we are being flushed, emit it
- // and empty the buffer. Otherwise hold onto the data because it may be
- // important for decoding the next segment
- if (bytesInBuffer === MP2T_PACKET_LENGTH$1 && buffer[0] === SYNC_BYTE$1) {
- this.trigger('data', buffer);
- bytesInBuffer = 0;
- }
- this.trigger('done');
- };
- this.endTimeline = function () {
- this.flush();
- this.trigger('endedtimeline');
- };
- this.reset = function () {
- bytesInBuffer = 0;
- this.trigger('reset');
- };
- };
- TransportPacketStream.prototype = new Stream$4();
- /**
- * Accepts an MP2T TransportPacketStream and emits data events with parsed
- * forms of the individual transport stream packets.
- */
-
- TransportParseStream = function () {
- var parsePsi, parsePat, parsePmt, self;
- TransportParseStream.prototype.init.call(this);
- self = this;
- this.packetsWaitingForPmt = [];
- this.programMapTable = undefined;
- parsePsi = function (payload, psi) {
- var offset = 0; // PSI packets may be split into multiple sections and those
- // sections may be split into multiple packets. If a PSI
- // section starts in this packet, the payload_unit_start_indicator
- // will be true and the first byte of the payload will indicate
- // the offset from the current position to the start of the
- // section.
-
- if (psi.payloadUnitStartIndicator) {
- offset += payload[offset] + 1;
- }
- if (psi.type === 'pat') {
- parsePat(payload.subarray(offset), psi);
- } else {
- parsePmt(payload.subarray(offset), psi);
- }
- };
- parsePat = function (payload, pat) {
- pat.section_number = payload[7]; // eslint-disable-line camelcase
-
- pat.last_section_number = payload[8]; // eslint-disable-line camelcase
- // skip the PSI header and parse the first PMT entry
-
- self.pmtPid = (payload[10] & 0x1F) << 8 | payload[11];
- pat.pmtPid = self.pmtPid;
- };
- /**
- * Parse out the relevant fields of a Program Map Table (PMT).
- * @param payload {Uint8Array} the PMT-specific portion of an MP2T
- * packet. The first byte in this array should be the table_id
- * field.
- * @param pmt {object} the object that should be decorated with
- * fields parsed from the PMT.
- */
-
- parsePmt = function (payload, pmt) {
- var sectionLength, tableEnd, programInfoLength, offset; // PMTs can be sent ahead of the time when they should actually
- // take effect. We don't believe this should ever be the case
- // for HLS but we'll ignore "forward" PMT declarations if we see
- // them. Future PMT declarations have the current_next_indicator
- // set to zero.
-
- if (!(payload[5] & 0x01)) {
- return;
- } // overwrite any existing program map table
-
- self.programMapTable = {
- video: null,
- audio: null,
- 'timed-metadata': {}
- }; // the mapping table ends at the end of the current section
-
- sectionLength = (payload[1] & 0x0f) << 8 | payload[2];
- tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how
- // long the program info descriptors are
-
- programInfoLength = (payload[10] & 0x0f) << 8 | payload[11]; // advance the offset to the first entry in the mapping table
-
- offset = 12 + programInfoLength;
- while (offset < tableEnd) {
- var streamType = payload[offset];
- var pid = (payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]; // only map a single elementary_pid for audio and video stream types
- // TODO: should this be done for metadata too? for now maintain behavior of
- // multiple metadata streams
-
- if (streamType === StreamTypes$2.H264_STREAM_TYPE && self.programMapTable.video === null) {
- self.programMapTable.video = pid;
- } else if (streamType === StreamTypes$2.ADTS_STREAM_TYPE && self.programMapTable.audio === null) {
- self.programMapTable.audio = pid;
- } else if (streamType === StreamTypes$2.METADATA_STREAM_TYPE) {
- // map pid to stream type for metadata streams
- self.programMapTable['timed-metadata'][pid] = streamType;
- } // move to the next table entry
- // skip past the elementary stream descriptors, if present
-
- offset += ((payload[offset + 3] & 0x0F) << 8 | payload[offset + 4]) + 5;
- } // record the map on the packet as well
-
- pmt.programMapTable = self.programMapTable;
- };
- /**
- * Deliver a new MP2T packet to the next stream in the pipeline.
- */
-
- this.push = function (packet) {
- var result = {},
- offset = 4;
- result.payloadUnitStartIndicator = !!(packet[1] & 0x40); // pid is a 13-bit field starting at the last bit of packet[1]
-
- result.pid = packet[1] & 0x1f;
- result.pid <<= 8;
- result.pid |= packet[2]; // if an adaption field is present, its length is specified by the
- // fifth byte of the TS packet header. The adaptation field is
- // used to add stuffing to PES packets that don't fill a complete
- // TS packet, and to specify some forms of timing and control data
- // that we do not currently use.
-
- if ((packet[3] & 0x30) >>> 4 > 0x01) {
- offset += packet[offset] + 1;
- } // parse the rest of the packet based on the type
-
- if (result.pid === 0) {
- result.type = 'pat';
- parsePsi(packet.subarray(offset), result);
- this.trigger('data', result);
- } else if (result.pid === this.pmtPid) {
- result.type = 'pmt';
- parsePsi(packet.subarray(offset), result);
- this.trigger('data', result); // if there are any packets waiting for a PMT to be found, process them now
-
- while (this.packetsWaitingForPmt.length) {
- this.processPes_.apply(this, this.packetsWaitingForPmt.shift());
- }
- } else if (this.programMapTable === undefined) {
- // When we have not seen a PMT yet, defer further processing of
- // PES packets until one has been parsed
- this.packetsWaitingForPmt.push([packet, offset, result]);
- } else {
- this.processPes_(packet, offset, result);
- }
- };
- this.processPes_ = function (packet, offset, result) {
- // set the appropriate stream type
- if (result.pid === this.programMapTable.video) {
- result.streamType = StreamTypes$2.H264_STREAM_TYPE;
- } else if (result.pid === this.programMapTable.audio) {
- result.streamType = StreamTypes$2.ADTS_STREAM_TYPE;
- } else {
- // if not video or audio, it is timed-metadata or unknown
- // if unknown, streamType will be undefined
- result.streamType = this.programMapTable['timed-metadata'][result.pid];
- }
- result.type = 'pes';
- result.data = packet.subarray(offset);
- this.trigger('data', result);
- };
- };
- TransportParseStream.prototype = new Stream$4();
- TransportParseStream.STREAM_TYPES = {
- h264: 0x1b,
- adts: 0x0f
- };
- /**
- * Reconsistutes program elementary stream (PES) packets from parsed
- * transport stream packets. That is, if you pipe an
- * mp2t.TransportParseStream into a mp2t.ElementaryStream, the output
- * events will be events which capture the bytes for individual PES
- * packets plus relevant metadata that has been extracted from the
- * container.
- */
-
- ElementaryStream = function () {
- var self = this,
- segmentHadPmt = false,
- // PES packet fragments
- video = {
- data: [],
- size: 0
- },
- audio = {
- data: [],
- size: 0
- },
- timedMetadata = {
- data: [],
- size: 0
- },
- programMapTable,
- parsePes = function (payload, pes) {
- var ptsDtsFlags;
- const startPrefix = payload[0] << 16 | payload[1] << 8 | payload[2]; // default to an empty array
-
- pes.data = new Uint8Array(); // In certain live streams, the start of a TS fragment has ts packets
- // that are frame data that is continuing from the previous fragment. This
- // is to check that the pes data is the start of a new pes payload
-
- if (startPrefix !== 1) {
- return;
- } // get the packet length, this will be 0 for video
-
- pes.packetLength = 6 + (payload[4] << 8 | payload[5]); // find out if this packets starts a new keyframe
-
- pes.dataAlignmentIndicator = (payload[6] & 0x04) !== 0; // PES packets may be annotated with a PTS value, or a PTS value
- // and a DTS value. Determine what combination of values is
- // available to work with.
-
- ptsDtsFlags = payload[7]; // PTS and DTS are normally stored as a 33-bit number. Javascript
- // performs all bitwise operations on 32-bit integers but javascript
- // supports a much greater range (52-bits) of integer using standard
- // mathematical operations.
- // We construct a 31-bit value using bitwise operators over the 31
- // most significant bits and then multiply by 4 (equal to a left-shift
- // of 2) before we add the final 2 least significant bits of the
- // timestamp (equal to an OR.)
-
- if (ptsDtsFlags & 0xC0) {
- // the PTS and DTS are not written out directly. For information
- // on how they are encoded, see
- // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
- pes.pts = (payload[9] & 0x0E) << 27 | (payload[10] & 0xFF) << 20 | (payload[11] & 0xFE) << 12 | (payload[12] & 0xFF) << 5 | (payload[13] & 0xFE) >>> 3;
- pes.pts *= 4; // Left shift by 2
-
- pes.pts += (payload[13] & 0x06) >>> 1; // OR by the two LSBs
-
- pes.dts = pes.pts;
- if (ptsDtsFlags & 0x40) {
- pes.dts = (payload[14] & 0x0E) << 27 | (payload[15] & 0xFF) << 20 | (payload[16] & 0xFE) << 12 | (payload[17] & 0xFF) << 5 | (payload[18] & 0xFE) >>> 3;
- pes.dts *= 4; // Left shift by 2
-
- pes.dts += (payload[18] & 0x06) >>> 1; // OR by the two LSBs
- }
- } // the data section starts immediately after the PES header.
- // pes_header_data_length specifies the number of header bytes
- // that follow the last byte of the field.
-
- pes.data = payload.subarray(9 + payload[8]);
- },
- /**
- * Pass completely parsed PES packets to the next stream in the pipeline
- **/
- flushStream = function (stream, type, forceFlush) {
- var packetData = new Uint8Array(stream.size),
- event = {
- type: type
- },
- i = 0,
- offset = 0,
- packetFlushable = false,
- fragment; // do nothing if there is not enough buffered data for a complete
- // PES header
-
- if (!stream.data.length || stream.size < 9) {
- return;
- }
- event.trackId = stream.data[0].pid; // reassemble the packet
-
- for (i = 0; i < stream.data.length; i++) {
- fragment = stream.data[i];
- packetData.set(fragment.data, offset);
- offset += fragment.data.byteLength;
- } // parse assembled packet's PES header
-
- parsePes(packetData, event); // non-video PES packets MUST have a non-zero PES_packet_length
- // check that there is enough stream data to fill the packet
-
- packetFlushable = type === 'video' || event.packetLength <= stream.size; // flush pending packets if the conditions are right
-
- if (forceFlush || packetFlushable) {
- stream.size = 0;
- stream.data.length = 0;
- } // only emit packets that are complete. this is to avoid assembling
- // incomplete PES packets due to poor segmentation
-
- if (packetFlushable) {
- self.trigger('data', event);
- }
- };
- ElementaryStream.prototype.init.call(this);
- /**
- * Identifies M2TS packet types and parses PES packets using metadata
- * parsed from the PMT
- **/
-
- this.push = function (data) {
- ({
- pat: function () {// we have to wait for the PMT to arrive as well before we
- // have any meaningful metadata
- },
- pes: function () {
- var stream, streamType;
- switch (data.streamType) {
- case StreamTypes$2.H264_STREAM_TYPE:
- stream = video;
- streamType = 'video';
- break;
- case StreamTypes$2.ADTS_STREAM_TYPE:
- stream = audio;
- streamType = 'audio';
- break;
- case StreamTypes$2.METADATA_STREAM_TYPE:
- stream = timedMetadata;
- streamType = 'timed-metadata';
- break;
- default:
- // ignore unknown stream types
- return;
- } // if a new packet is starting, we can flush the completed
- // packet
-
- if (data.payloadUnitStartIndicator) {
- flushStream(stream, streamType, true);
- } // buffer this fragment until we are sure we've received the
- // complete payload
-
- stream.data.push(data);
- stream.size += data.data.byteLength;
- },
- pmt: function () {
- var event = {
- type: 'metadata',
- tracks: []
- };
- programMapTable = data.programMapTable; // translate audio and video streams to tracks
-
- if (programMapTable.video !== null) {
- event.tracks.push({
- timelineStartInfo: {
- baseMediaDecodeTime: 0
- },
- id: +programMapTable.video,
- codec: 'avc',
- type: 'video'
- });
- }
- if (programMapTable.audio !== null) {
- event.tracks.push({
- timelineStartInfo: {
- baseMediaDecodeTime: 0
- },
- id: +programMapTable.audio,
- codec: 'adts',
- type: 'audio'
- });
- }
- segmentHadPmt = true;
- self.trigger('data', event);
- }
- })[data.type]();
- };
- this.reset = function () {
- video.size = 0;
- video.data.length = 0;
- audio.size = 0;
- audio.data.length = 0;
- this.trigger('reset');
- };
- /**
- * Flush any remaining input. Video PES packets may be of variable
- * length. Normally, the start of a new video packet can trigger the
- * finalization of the previous packet. That is not possible if no
- * more video is forthcoming, however. In that case, some other
- * mechanism (like the end of the file) has to be employed. When it is
- * clear that no additional data is forthcoming, calling this method
- * will flush the buffered packets.
- */
-
- this.flushStreams_ = function () {
- // !!THIS ORDER IS IMPORTANT!!
- // video first then audio
- flushStream(video, 'video');
- flushStream(audio, 'audio');
- flushStream(timedMetadata, 'timed-metadata');
- };
- this.flush = function () {
- // if on flush we haven't had a pmt emitted
- // and we have a pmt to emit. emit the pmt
- // so that we trigger a trackinfo downstream.
- if (!segmentHadPmt && programMapTable) {
- var pmt = {
- type: 'metadata',
- tracks: []
- }; // translate audio and video streams to tracks
-
- if (programMapTable.video !== null) {
- pmt.tracks.push({
- timelineStartInfo: {
- baseMediaDecodeTime: 0
- },
- id: +programMapTable.video,
- codec: 'avc',
- type: 'video'
- });
- }
- if (programMapTable.audio !== null) {
- pmt.tracks.push({
- timelineStartInfo: {
- baseMediaDecodeTime: 0
- },
- id: +programMapTable.audio,
- codec: 'adts',
- type: 'audio'
- });
- }
- self.trigger('data', pmt);
- }
- segmentHadPmt = false;
- this.flushStreams_();
- this.trigger('done');
- };
- };
- ElementaryStream.prototype = new Stream$4();
- var m2ts$1 = {
- PAT_PID: 0x0000,
- MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH$1,
- TransportPacketStream: TransportPacketStream,
- TransportParseStream: TransportParseStream,
- ElementaryStream: ElementaryStream,
- TimestampRolloverStream: TimestampRolloverStream,
- CaptionStream: CaptionStream$1.CaptionStream,
- Cea608Stream: CaptionStream$1.Cea608Stream,
- Cea708Stream: CaptionStream$1.Cea708Stream,
- MetadataStream: metadataStream
- };
- for (var type in StreamTypes$2) {
- if (StreamTypes$2.hasOwnProperty(type)) {
- m2ts$1[type] = StreamTypes$2[type];
- }
- }
- var m2ts_1 = m2ts$1;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var Stream$3 = stream;
- var ONE_SECOND_IN_TS$2 = clock$2.ONE_SECOND_IN_TS;
- var AdtsStream$1;
- var ADTS_SAMPLING_FREQUENCIES$1 = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
- /*
- * Accepts a ElementaryStream and emits data events with parsed
- * AAC Audio Frames of the individual packets. Input audio in ADTS
- * format is unpacked and re-emitted as AAC frames.
- *
- * @see http://wiki.multimedia.cx/index.php?title=ADTS
- * @see http://wiki.multimedia.cx/?title=Understanding_AAC
- */
-
- AdtsStream$1 = function (handlePartialSegments) {
- var buffer,
- frameNum = 0;
- AdtsStream$1.prototype.init.call(this);
- this.skipWarn_ = function (start, end) {
- this.trigger('log', {
- level: 'warn',
- message: `adts skiping bytes ${start} to ${end} in frame ${frameNum} outside syncword`
- });
- };
- this.push = function (packet) {
- var i = 0,
- frameLength,
- protectionSkipBytes,
- oldBuffer,
- sampleCount,
- adtsFrameDuration;
- if (!handlePartialSegments) {
- frameNum = 0;
- }
- if (packet.type !== 'audio') {
- // ignore non-audio data
- return;
- } // Prepend any data in the buffer to the input data so that we can parse
- // aac frames the cross a PES packet boundary
-
- if (buffer && buffer.length) {
- oldBuffer = buffer;
- buffer = new Uint8Array(oldBuffer.byteLength + packet.data.byteLength);
- buffer.set(oldBuffer);
- buffer.set(packet.data, oldBuffer.byteLength);
- } else {
- buffer = packet.data;
- } // unpack any ADTS frames which have been fully received
- // for details on the ADTS header, see http://wiki.multimedia.cx/index.php?title=ADTS
-
- var skip; // We use i + 7 here because we want to be able to parse the entire header.
- // If we don't have enough bytes to do that, then we definitely won't have a full frame.
-
- while (i + 7 < buffer.length) {
- // Look for the start of an ADTS header..
- if (buffer[i] !== 0xFF || (buffer[i + 1] & 0xF6) !== 0xF0) {
- if (typeof skip !== 'number') {
- skip = i;
- } // If a valid header was not found, jump one forward and attempt to
- // find a valid ADTS header starting at the next byte
-
- i++;
- continue;
- }
- if (typeof skip === 'number') {
- this.skipWarn_(skip, i);
- skip = null;
- } // The protection skip bit tells us if we have 2 bytes of CRC data at the
- // end of the ADTS header
-
- protectionSkipBytes = (~buffer[i + 1] & 0x01) * 2; // Frame length is a 13 bit integer starting 16 bits from the
- // end of the sync sequence
- // NOTE: frame length includes the size of the header
-
- frameLength = (buffer[i + 3] & 0x03) << 11 | buffer[i + 4] << 3 | (buffer[i + 5] & 0xe0) >> 5;
- sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;
- adtsFrameDuration = sampleCount * ONE_SECOND_IN_TS$2 / ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2]; // If we don't have enough data to actually finish this ADTS frame,
- // then we have to wait for more data
-
- if (buffer.byteLength - i < frameLength) {
- break;
- } // Otherwise, deliver the complete AAC frame
-
- this.trigger('data', {
- pts: packet.pts + frameNum * adtsFrameDuration,
- dts: packet.dts + frameNum * adtsFrameDuration,
- sampleCount: sampleCount,
- audioobjecttype: (buffer[i + 2] >>> 6 & 0x03) + 1,
- channelcount: (buffer[i + 2] & 1) << 2 | (buffer[i + 3] & 0xc0) >>> 6,
- samplerate: ADTS_SAMPLING_FREQUENCIES$1[(buffer[i + 2] & 0x3c) >>> 2],
- samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,
- // assume ISO/IEC 14496-12 AudioSampleEntry default of 16
- samplesize: 16,
- // data is the frame without it's header
- data: buffer.subarray(i + 7 + protectionSkipBytes, i + frameLength)
- });
- frameNum++;
- i += frameLength;
- }
- if (typeof skip === 'number') {
- this.skipWarn_(skip, i);
- skip = null;
- } // remove processed bytes from the buffer.
-
- buffer = buffer.subarray(i);
- };
- this.flush = function () {
- frameNum = 0;
- this.trigger('done');
- };
- this.reset = function () {
- buffer = void 0;
- this.trigger('reset');
- };
- this.endTimeline = function () {
- buffer = void 0;
- this.trigger('endedtimeline');
- };
- };
- AdtsStream$1.prototype = new Stream$3();
- var adts = AdtsStream$1;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var ExpGolomb$1;
- /**
- * Parser for exponential Golomb codes, a variable-bitwidth number encoding
- * scheme used by h264.
- */
-
- ExpGolomb$1 = function (workingData) {
- var
- // the number of bytes left to examine in workingData
- workingBytesAvailable = workingData.byteLength,
- // the current word being examined
- workingWord = 0,
- // :uint
- // the number of bits left to examine in the current word
- workingBitsAvailable = 0; // :uint;
- // ():uint
-
- this.length = function () {
- return 8 * workingBytesAvailable;
- }; // ():uint
-
- this.bitsAvailable = function () {
- return 8 * workingBytesAvailable + workingBitsAvailable;
- }; // ():void
-
- this.loadWord = function () {
- var position = workingData.byteLength - workingBytesAvailable,
- workingBytes = new Uint8Array(4),
- availableBytes = Math.min(4, workingBytesAvailable);
- if (availableBytes === 0) {
- throw new Error('no bytes available');
- }
- workingBytes.set(workingData.subarray(position, position + availableBytes));
- workingWord = new DataView(workingBytes.buffer).getUint32(0); // track the amount of workingData that has been processed
-
- workingBitsAvailable = availableBytes * 8;
- workingBytesAvailable -= availableBytes;
- }; // (count:int):void
-
- this.skipBits = function (count) {
- var skipBytes; // :int
-
- if (workingBitsAvailable > count) {
- workingWord <<= count;
- workingBitsAvailable -= count;
- } else {
- count -= workingBitsAvailable;
- skipBytes = Math.floor(count / 8);
- count -= skipBytes * 8;
- workingBytesAvailable -= skipBytes;
- this.loadWord();
- workingWord <<= count;
- workingBitsAvailable -= count;
- }
- }; // (size:int):uint
-
- this.readBits = function (size) {
- var bits = Math.min(workingBitsAvailable, size),
- // :uint
- valu = workingWord >>> 32 - bits; // :uint
- // if size > 31, handle error
-
- workingBitsAvailable -= bits;
- if (workingBitsAvailable > 0) {
- workingWord <<= bits;
- } else if (workingBytesAvailable > 0) {
- this.loadWord();
- }
- bits = size - bits;
- if (bits > 0) {
- return valu << bits | this.readBits(bits);
- }
- return valu;
- }; // ():uint
-
- this.skipLeadingZeros = function () {
- var leadingZeroCount; // :uint
-
- for (leadingZeroCount = 0; leadingZeroCount < workingBitsAvailable; ++leadingZeroCount) {
- if ((workingWord & 0x80000000 >>> leadingZeroCount) !== 0) {
- // the first bit of working word is 1
- workingWord <<= leadingZeroCount;
- workingBitsAvailable -= leadingZeroCount;
- return leadingZeroCount;
- }
- } // we exhausted workingWord and still have not found a 1
-
- this.loadWord();
- return leadingZeroCount + this.skipLeadingZeros();
- }; // ():void
-
- this.skipUnsignedExpGolomb = function () {
- this.skipBits(1 + this.skipLeadingZeros());
- }; // ():void
-
- this.skipExpGolomb = function () {
- this.skipBits(1 + this.skipLeadingZeros());
- }; // ():uint
-
- this.readUnsignedExpGolomb = function () {
- var clz = this.skipLeadingZeros(); // :uint
-
- return this.readBits(clz + 1) - 1;
- }; // ():int
-
- this.readExpGolomb = function () {
- var valu = this.readUnsignedExpGolomb(); // :int
-
- if (0x01 & valu) {
- // the number is odd if the low order bit is set
- return 1 + valu >>> 1; // add 1 to make it even, and divide by 2
- }
-
- return -1 * (valu >>> 1); // divide by two then make it negative
- }; // Some convenience functions
- // :Boolean
-
- this.readBoolean = function () {
- return this.readBits(1) === 1;
- }; // ():int
-
- this.readUnsignedByte = function () {
- return this.readBits(8);
- };
- this.loadWord();
- };
- var expGolomb = ExpGolomb$1;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var Stream$2 = stream;
- var ExpGolomb = expGolomb;
- var H264Stream$1, NalByteStream;
- var PROFILES_WITH_OPTIONAL_SPS_DATA;
- /**
- * Accepts a NAL unit byte stream and unpacks the embedded NAL units.
- */
-
- NalByteStream = function () {
- var syncPoint = 0,
- i,
- buffer;
- NalByteStream.prototype.init.call(this);
- /*
- * Scans a byte stream and triggers a data event with the NAL units found.
- * @param {Object} data Event received from H264Stream
- * @param {Uint8Array} data.data The h264 byte stream to be scanned
- *
- * @see H264Stream.push
- */
-
- this.push = function (data) {
- var swapBuffer;
- if (!buffer) {
- buffer = data.data;
- } else {
- swapBuffer = new Uint8Array(buffer.byteLength + data.data.byteLength);
- swapBuffer.set(buffer);
- swapBuffer.set(data.data, buffer.byteLength);
- buffer = swapBuffer;
- }
- var len = buffer.byteLength; // Rec. ITU-T H.264, Annex B
- // scan for NAL unit boundaries
- // a match looks like this:
- // 0 0 1 .. NAL .. 0 0 1
- // ^ sync point ^ i
- // or this:
- // 0 0 1 .. NAL .. 0 0 0
- // ^ sync point ^ i
- // advance the sync point to a NAL start, if necessary
-
- for (; syncPoint < len - 3; syncPoint++) {
- if (buffer[syncPoint + 2] === 1) {
- // the sync point is properly aligned
- i = syncPoint + 5;
- break;
- }
- }
- while (i < len) {
- // look at the current byte to determine if we've hit the end of
- // a NAL unit boundary
- switch (buffer[i]) {
- case 0:
- // skip past non-sync sequences
- if (buffer[i - 1] !== 0) {
- i += 2;
- break;
- } else if (buffer[i - 2] !== 0) {
- i++;
- break;
- } // deliver the NAL unit if it isn't empty
-
- if (syncPoint + 3 !== i - 2) {
- this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
- } // drop trailing zeroes
-
- do {
- i++;
- } while (buffer[i] !== 1 && i < len);
- syncPoint = i - 2;
- i += 3;
- break;
- case 1:
- // skip past non-sync sequences
- if (buffer[i - 1] !== 0 || buffer[i - 2] !== 0) {
- i += 3;
- break;
- } // deliver the NAL unit
-
- this.trigger('data', buffer.subarray(syncPoint + 3, i - 2));
- syncPoint = i - 2;
- i += 3;
- break;
- default:
- // the current byte isn't a one or zero, so it cannot be part
- // of a sync sequence
- i += 3;
- break;
- }
- } // filter out the NAL units that were delivered
-
- buffer = buffer.subarray(syncPoint);
- i -= syncPoint;
- syncPoint = 0;
- };
- this.reset = function () {
- buffer = null;
- syncPoint = 0;
- this.trigger('reset');
- };
- this.flush = function () {
- // deliver the last buffered NAL unit
- if (buffer && buffer.byteLength > 3) {
- this.trigger('data', buffer.subarray(syncPoint + 3));
- } // reset the stream state
-
- buffer = null;
- syncPoint = 0;
- this.trigger('done');
- };
- this.endTimeline = function () {
- this.flush();
- this.trigger('endedtimeline');
- };
- };
- NalByteStream.prototype = new Stream$2(); // values of profile_idc that indicate additional fields are included in the SPS
- // see Recommendation ITU-T H.264 (4/2013),
- // 7.3.2.1.1 Sequence parameter set data syntax
-
- PROFILES_WITH_OPTIONAL_SPS_DATA = {
- 100: true,
- 110: true,
- 122: true,
- 244: true,
- 44: true,
- 83: true,
- 86: true,
- 118: true,
- 128: true,
- // TODO: the three profiles below don't
- // appear to have sps data in the specificiation anymore?
- 138: true,
- 139: true,
- 134: true
- };
- /**
- * Accepts input from a ElementaryStream and produces H.264 NAL unit data
- * events.
- */
-
- H264Stream$1 = function () {
- var nalByteStream = new NalByteStream(),
- self,
- trackId,
- currentPts,
- currentDts,
- discardEmulationPreventionBytes,
- readSequenceParameterSet,
- skipScalingList;
- H264Stream$1.prototype.init.call(this);
- self = this;
- /*
- * Pushes a packet from a stream onto the NalByteStream
- *
- * @param {Object} packet - A packet received from a stream
- * @param {Uint8Array} packet.data - The raw bytes of the packet
- * @param {Number} packet.dts - Decode timestamp of the packet
- * @param {Number} packet.pts - Presentation timestamp of the packet
- * @param {Number} packet.trackId - The id of the h264 track this packet came from
- * @param {('video'|'audio')} packet.type - The type of packet
- *
- */
-
- this.push = function (packet) {
- if (packet.type !== 'video') {
- return;
- }
- trackId = packet.trackId;
- currentPts = packet.pts;
- currentDts = packet.dts;
- nalByteStream.push(packet);
- };
- /*
- * Identify NAL unit types and pass on the NALU, trackId, presentation and decode timestamps
- * for the NALUs to the next stream component.
- * Also, preprocess caption and sequence parameter NALUs.
- *
- * @param {Uint8Array} data - A NAL unit identified by `NalByteStream.push`
- * @see NalByteStream.push
- */
-
- nalByteStream.on('data', function (data) {
- var event = {
- trackId: trackId,
- pts: currentPts,
- dts: currentDts,
- data: data,
- nalUnitTypeCode: data[0] & 0x1f
- };
- switch (event.nalUnitTypeCode) {
- case 0x05:
- event.nalUnitType = 'slice_layer_without_partitioning_rbsp_idr';
- break;
- case 0x06:
- event.nalUnitType = 'sei_rbsp';
- event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
- break;
- case 0x07:
- event.nalUnitType = 'seq_parameter_set_rbsp';
- event.escapedRBSP = discardEmulationPreventionBytes(data.subarray(1));
- event.config = readSequenceParameterSet(event.escapedRBSP);
- break;
- case 0x08:
- event.nalUnitType = 'pic_parameter_set_rbsp';
- break;
- case 0x09:
- event.nalUnitType = 'access_unit_delimiter_rbsp';
- break;
- } // This triggers data on the H264Stream
-
- self.trigger('data', event);
- });
- nalByteStream.on('done', function () {
- self.trigger('done');
- });
- nalByteStream.on('partialdone', function () {
- self.trigger('partialdone');
- });
- nalByteStream.on('reset', function () {
- self.trigger('reset');
- });
- nalByteStream.on('endedtimeline', function () {
- self.trigger('endedtimeline');
- });
- this.flush = function () {
- nalByteStream.flush();
- };
- this.partialFlush = function () {
- nalByteStream.partialFlush();
- };
- this.reset = function () {
- nalByteStream.reset();
- };
- this.endTimeline = function () {
- nalByteStream.endTimeline();
- };
- /**
- * Advance the ExpGolomb decoder past a scaling list. The scaling
- * list is optionally transmitted as part of a sequence parameter
- * set and is not relevant to transmuxing.
- * @param count {number} the number of entries in this scaling list
- * @param expGolombDecoder {object} an ExpGolomb pointed to the
- * start of a scaling list
- * @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1
- */
-
- skipScalingList = function (count, expGolombDecoder) {
- var lastScale = 8,
- nextScale = 8,
- j,
- deltaScale;
- for (j = 0; j < count; j++) {
- if (nextScale !== 0) {
- deltaScale = expGolombDecoder.readExpGolomb();
- nextScale = (lastScale + deltaScale + 256) % 256;
- }
- lastScale = nextScale === 0 ? lastScale : nextScale;
- }
- };
- /**
- * Expunge any "Emulation Prevention" bytes from a "Raw Byte
- * Sequence Payload"
- * @param data {Uint8Array} the bytes of a RBSP from a NAL
- * unit
- * @return {Uint8Array} the RBSP without any Emulation
- * Prevention Bytes
- */
-
- discardEmulationPreventionBytes = function (data) {
- var length = data.byteLength,
- emulationPreventionBytesPositions = [],
- i = 1,
- newLength,
- newData; // Find all `Emulation Prevention Bytes`
-
- while (i < length - 2) {
- if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
- emulationPreventionBytesPositions.push(i + 2);
- i += 2;
- } else {
- i++;
- }
- } // If no Emulation Prevention Bytes were found just return the original
- // array
-
- if (emulationPreventionBytesPositions.length === 0) {
- return data;
- } // Create a new array to hold the NAL unit data
-
- newLength = length - emulationPreventionBytesPositions.length;
- newData = new Uint8Array(newLength);
- var sourceIndex = 0;
- for (i = 0; i < newLength; sourceIndex++, i++) {
- if (sourceIndex === emulationPreventionBytesPositions[0]) {
- // Skip this byte
- sourceIndex++; // Remove this position index
-
- emulationPreventionBytesPositions.shift();
- }
- newData[i] = data[sourceIndex];
- }
- return newData;
- };
- /**
- * Read a sequence parameter set and return some interesting video
- * properties. A sequence parameter set is the H264 metadata that
- * describes the properties of upcoming video frames.
- * @param data {Uint8Array} the bytes of a sequence parameter set
- * @return {object} an object with configuration parsed from the
- * sequence parameter set, including the dimensions of the
- * associated video frames.
- */
-
- readSequenceParameterSet = function (data) {
- var frameCropLeftOffset = 0,
- frameCropRightOffset = 0,
- frameCropTopOffset = 0,
- frameCropBottomOffset = 0,
- expGolombDecoder,
- profileIdc,
- levelIdc,
- profileCompatibility,
- chromaFormatIdc,
- picOrderCntType,
- numRefFramesInPicOrderCntCycle,
- picWidthInMbsMinus1,
- picHeightInMapUnitsMinus1,
- frameMbsOnlyFlag,
- scalingListCount,
- sarRatio = [1, 1],
- aspectRatioIdc,
- i;
- expGolombDecoder = new ExpGolomb(data);
- profileIdc = expGolombDecoder.readUnsignedByte(); // profile_idc
-
- profileCompatibility = expGolombDecoder.readUnsignedByte(); // constraint_set[0-5]_flag
-
- levelIdc = expGolombDecoder.readUnsignedByte(); // level_idc u(8)
-
- expGolombDecoder.skipUnsignedExpGolomb(); // seq_parameter_set_id
- // some profiles have more optional data we don't need
-
- if (PROFILES_WITH_OPTIONAL_SPS_DATA[profileIdc]) {
- chromaFormatIdc = expGolombDecoder.readUnsignedExpGolomb();
- if (chromaFormatIdc === 3) {
- expGolombDecoder.skipBits(1); // separate_colour_plane_flag
- }
-
- expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_luma_minus8
-
- expGolombDecoder.skipUnsignedExpGolomb(); // bit_depth_chroma_minus8
-
- expGolombDecoder.skipBits(1); // qpprime_y_zero_transform_bypass_flag
-
- if (expGolombDecoder.readBoolean()) {
- // seq_scaling_matrix_present_flag
- scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;
- for (i = 0; i < scalingListCount; i++) {
- if (expGolombDecoder.readBoolean()) {
- // seq_scaling_list_present_flag[ i ]
- if (i < 6) {
- skipScalingList(16, expGolombDecoder);
- } else {
- skipScalingList(64, expGolombDecoder);
- }
- }
- }
- }
- }
- expGolombDecoder.skipUnsignedExpGolomb(); // log2_max_frame_num_minus4
-
- picOrderCntType = expGolombDecoder.readUnsignedExpGolomb();
- if (picOrderCntType === 0) {
- expGolombDecoder.readUnsignedExpGolomb(); // log2_max_pic_order_cnt_lsb_minus4
- } else if (picOrderCntType === 1) {
- expGolombDecoder.skipBits(1); // delta_pic_order_always_zero_flag
-
- expGolombDecoder.skipExpGolomb(); // offset_for_non_ref_pic
-
- expGolombDecoder.skipExpGolomb(); // offset_for_top_to_bottom_field
-
- numRefFramesInPicOrderCntCycle = expGolombDecoder.readUnsignedExpGolomb();
- for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
- expGolombDecoder.skipExpGolomb(); // offset_for_ref_frame[ i ]
- }
- }
-
- expGolombDecoder.skipUnsignedExpGolomb(); // max_num_ref_frames
-
- expGolombDecoder.skipBits(1); // gaps_in_frame_num_value_allowed_flag
-
- picWidthInMbsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
- picHeightInMapUnitsMinus1 = expGolombDecoder.readUnsignedExpGolomb();
- frameMbsOnlyFlag = expGolombDecoder.readBits(1);
- if (frameMbsOnlyFlag === 0) {
- expGolombDecoder.skipBits(1); // mb_adaptive_frame_field_flag
- }
-
- expGolombDecoder.skipBits(1); // direct_8x8_inference_flag
-
- if (expGolombDecoder.readBoolean()) {
- // frame_cropping_flag
- frameCropLeftOffset = expGolombDecoder.readUnsignedExpGolomb();
- frameCropRightOffset = expGolombDecoder.readUnsignedExpGolomb();
- frameCropTopOffset = expGolombDecoder.readUnsignedExpGolomb();
- frameCropBottomOffset = expGolombDecoder.readUnsignedExpGolomb();
- }
- if (expGolombDecoder.readBoolean()) {
- // vui_parameters_present_flag
- if (expGolombDecoder.readBoolean()) {
- // aspect_ratio_info_present_flag
- aspectRatioIdc = expGolombDecoder.readUnsignedByte();
- switch (aspectRatioIdc) {
- case 1:
- sarRatio = [1, 1];
- break;
- case 2:
- sarRatio = [12, 11];
- break;
- case 3:
- sarRatio = [10, 11];
- break;
- case 4:
- sarRatio = [16, 11];
- break;
- case 5:
- sarRatio = [40, 33];
- break;
- case 6:
- sarRatio = [24, 11];
- break;
- case 7:
- sarRatio = [20, 11];
- break;
- case 8:
- sarRatio = [32, 11];
- break;
- case 9:
- sarRatio = [80, 33];
- break;
- case 10:
- sarRatio = [18, 11];
- break;
- case 11:
- sarRatio = [15, 11];
- break;
- case 12:
- sarRatio = [64, 33];
- break;
- case 13:
- sarRatio = [160, 99];
- break;
- case 14:
- sarRatio = [4, 3];
- break;
- case 15:
- sarRatio = [3, 2];
- break;
- case 16:
- sarRatio = [2, 1];
- break;
- case 255:
- {
- sarRatio = [expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte(), expGolombDecoder.readUnsignedByte() << 8 | expGolombDecoder.readUnsignedByte()];
- break;
- }
- }
- if (sarRatio) {
- sarRatio[0] / sarRatio[1];
- }
- }
- }
- return {
- profileIdc: profileIdc,
- levelIdc: levelIdc,
- profileCompatibility: profileCompatibility,
- width: (picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2,
- height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - frameCropTopOffset * 2 - frameCropBottomOffset * 2,
- // sar is sample aspect ratio
- sarRatio: sarRatio
- };
- };
- };
- H264Stream$1.prototype = new Stream$2();
- var h264 = {
- H264Stream: H264Stream$1,
- NalByteStream: NalByteStream
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Utilities to detect basic properties and metadata about Aac data.
- */
-
- var ADTS_SAMPLING_FREQUENCIES = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
- var parseId3TagSize = function (header, byteIndex) {
- var returnSize = header[byteIndex + 6] << 21 | header[byteIndex + 7] << 14 | header[byteIndex + 8] << 7 | header[byteIndex + 9],
- flags = header[byteIndex + 5],
- footerPresent = (flags & 16) >> 4; // if we get a negative returnSize clamp it to 0
-
- returnSize = returnSize >= 0 ? returnSize : 0;
- if (footerPresent) {
- return returnSize + 20;
- }
- return returnSize + 10;
- };
- var getId3Offset = function (data, offset) {
- if (data.length - offset < 10 || data[offset] !== 'I'.charCodeAt(0) || data[offset + 1] !== 'D'.charCodeAt(0) || data[offset + 2] !== '3'.charCodeAt(0)) {
- return offset;
- }
- offset += parseId3TagSize(data, offset);
- return getId3Offset(data, offset);
- }; // TODO: use vhs-utils
-
- var isLikelyAacData$1 = function (data) {
- var offset = getId3Offset(data, 0);
- return data.length >= offset + 2 && (data[offset] & 0xFF) === 0xFF && (data[offset + 1] & 0xF0) === 0xF0 &&
- // verify that the 2 layer bits are 0, aka this
- // is not mp3 data but aac data.
- (data[offset + 1] & 0x16) === 0x10;
- };
- var parseSyncSafeInteger = function (data) {
- return data[0] << 21 | data[1] << 14 | data[2] << 7 | data[3];
- }; // return a percent-encoded representation of the specified byte range
- // @see http://en.wikipedia.org/wiki/Percent-encoding
-
- var percentEncode = function (bytes, start, end) {
- var i,
- result = '';
- for (i = start; i < end; i++) {
- result += '%' + ('00' + bytes[i].toString(16)).slice(-2);
- }
- return result;
- }; // return the string representation of the specified byte range,
- // interpreted as ISO-8859-1.
-
- var parseIso88591 = function (bytes, start, end) {
- return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
- };
-
- var parseAdtsSize = function (header, byteIndex) {
- var lowThree = (header[byteIndex + 5] & 0xE0) >> 5,
- middle = header[byteIndex + 4] << 3,
- highTwo = header[byteIndex + 3] & 0x3 << 11;
- return highTwo | middle | lowThree;
- };
- var parseType$4 = function (header, byteIndex) {
- if (header[byteIndex] === 'I'.charCodeAt(0) && header[byteIndex + 1] === 'D'.charCodeAt(0) && header[byteIndex + 2] === '3'.charCodeAt(0)) {
- return 'timed-metadata';
- } else if (header[byteIndex] & 0xff === 0xff && (header[byteIndex + 1] & 0xf0) === 0xf0) {
- return 'audio';
- }
- return null;
- };
- var parseSampleRate = function (packet) {
- var i = 0;
- while (i + 5 < packet.length) {
- if (packet[i] !== 0xFF || (packet[i + 1] & 0xF6) !== 0xF0) {
- // If a valid header was not found, jump one forward and attempt to
- // find a valid ADTS header starting at the next byte
- i++;
- continue;
- }
- return ADTS_SAMPLING_FREQUENCIES[(packet[i + 2] & 0x3c) >>> 2];
- }
- return null;
- };
- var parseAacTimestamp = function (packet) {
- var frameStart, frameSize, frame, frameHeader; // find the start of the first frame and the end of the tag
-
- frameStart = 10;
- if (packet[5] & 0x40) {
- // advance the frame start past the extended header
- frameStart += 4; // header size field
-
- frameStart += parseSyncSafeInteger(packet.subarray(10, 14));
- } // parse one or more ID3 frames
- // http://id3.org/id3v2.3.0#ID3v2_frame_overview
-
- do {
- // determine the number of bytes in this frame
- frameSize = parseSyncSafeInteger(packet.subarray(frameStart + 4, frameStart + 8));
- if (frameSize < 1) {
- return null;
- }
- frameHeader = String.fromCharCode(packet[frameStart], packet[frameStart + 1], packet[frameStart + 2], packet[frameStart + 3]);
- if (frameHeader === 'PRIV') {
- frame = packet.subarray(frameStart + 10, frameStart + frameSize + 10);
- for (var i = 0; i < frame.byteLength; i++) {
- if (frame[i] === 0) {
- var owner = parseIso88591(frame, 0, i);
- if (owner === 'com.apple.streaming.transportStreamTimestamp') {
- var d = frame.subarray(i + 1);
- var size = (d[3] & 0x01) << 30 | d[4] << 22 | d[5] << 14 | d[6] << 6 | d[7] >>> 2;
- size *= 4;
- size += d[7] & 0x03;
- return size;
- }
- break;
- }
- }
- }
- frameStart += 10; // advance past the frame header
-
- frameStart += frameSize; // advance past the frame body
- } while (frameStart < packet.byteLength);
- return null;
- };
- var utils = {
- isLikelyAacData: isLikelyAacData$1,
- parseId3TagSize: parseId3TagSize,
- parseAdtsSize: parseAdtsSize,
- parseType: parseType$4,
- parseSampleRate: parseSampleRate,
- parseAacTimestamp: parseAacTimestamp
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * A stream-based aac to mp4 converter. This utility can be used to
- * deliver mp4s to a SourceBuffer on platforms that support native
- * Media Source Extensions.
- */
-
- var Stream$1 = stream;
- var aacUtils = utils; // Constants
-
- var AacStream$1;
- /**
- * Splits an incoming stream of binary data into ADTS and ID3 Frames.
- */
-
- AacStream$1 = function () {
- var everything = new Uint8Array(),
- timeStamp = 0;
- AacStream$1.prototype.init.call(this);
- this.setTimestamp = function (timestamp) {
- timeStamp = timestamp;
- };
- this.push = function (bytes) {
- var frameSize = 0,
- byteIndex = 0,
- bytesLeft,
- chunk,
- packet,
- tempLength; // If there are bytes remaining from the last segment, prepend them to the
- // bytes that were pushed in
-
- if (everything.length) {
- tempLength = everything.length;
- everything = new Uint8Array(bytes.byteLength + tempLength);
- everything.set(everything.subarray(0, tempLength));
- everything.set(bytes, tempLength);
- } else {
- everything = bytes;
- }
- while (everything.length - byteIndex >= 3) {
- if (everything[byteIndex] === 'I'.charCodeAt(0) && everything[byteIndex + 1] === 'D'.charCodeAt(0) && everything[byteIndex + 2] === '3'.charCodeAt(0)) {
- // Exit early because we don't have enough to parse
- // the ID3 tag header
- if (everything.length - byteIndex < 10) {
- break;
- } // check framesize
-
- frameSize = aacUtils.parseId3TagSize(everything, byteIndex); // Exit early if we don't have enough in the buffer
- // to emit a full packet
- // Add to byteIndex to support multiple ID3 tags in sequence
-
- if (byteIndex + frameSize > everything.length) {
- break;
- }
- chunk = {
- type: 'timed-metadata',
- data: everything.subarray(byteIndex, byteIndex + frameSize)
- };
- this.trigger('data', chunk);
- byteIndex += frameSize;
- continue;
- } else if ((everything[byteIndex] & 0xff) === 0xff && (everything[byteIndex + 1] & 0xf0) === 0xf0) {
- // Exit early because we don't have enough to parse
- // the ADTS frame header
- if (everything.length - byteIndex < 7) {
- break;
- }
- frameSize = aacUtils.parseAdtsSize(everything, byteIndex); // Exit early if we don't have enough in the buffer
- // to emit a full packet
-
- if (byteIndex + frameSize > everything.length) {
- break;
- }
- packet = {
- type: 'audio',
- data: everything.subarray(byteIndex, byteIndex + frameSize),
- pts: timeStamp,
- dts: timeStamp
- };
- this.trigger('data', packet);
- byteIndex += frameSize;
- continue;
- }
- byteIndex++;
- }
- bytesLeft = everything.length - byteIndex;
- if (bytesLeft > 0) {
- everything = everything.subarray(byteIndex);
- } else {
- everything = new Uint8Array();
- }
- };
- this.reset = function () {
- everything = new Uint8Array();
- this.trigger('reset');
- };
- this.endTimeline = function () {
- everything = new Uint8Array();
- this.trigger('endedtimeline');
- };
- };
- AacStream$1.prototype = new Stream$1();
- var aac = AacStream$1;
- var AUDIO_PROPERTIES$1 = ['audioobjecttype', 'channelcount', 'samplerate', 'samplingfrequencyindex', 'samplesize'];
- var audioProperties = AUDIO_PROPERTIES$1;
- var VIDEO_PROPERTIES$1 = ['width', 'height', 'profileIdc', 'levelIdc', 'profileCompatibility', 'sarRatio'];
- var videoProperties = VIDEO_PROPERTIES$1;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * A stream-based mp2t to mp4 converter. This utility can be used to
- * deliver mp4s to a SourceBuffer on platforms that support native
- * Media Source Extensions.
- */
-
- var Stream = stream;
- var mp4 = mp4Generator;
- var frameUtils = frameUtils$1;
- var audioFrameUtils = audioFrameUtils$1;
- var trackDecodeInfo = trackDecodeInfo$1;
- var m2ts = m2ts_1;
- var clock = clock$2;
- var AdtsStream = adts;
- var H264Stream = h264.H264Stream;
- var AacStream = aac;
- var isLikelyAacData = utils.isLikelyAacData;
- var ONE_SECOND_IN_TS$1 = clock$2.ONE_SECOND_IN_TS;
- var AUDIO_PROPERTIES = audioProperties;
- var VIDEO_PROPERTIES = videoProperties; // object types
-
- var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;
- var retriggerForStream = function (key, event) {
- event.stream = key;
- this.trigger('log', event);
- };
- var addPipelineLogRetriggers = function (transmuxer, pipeline) {
- var keys = Object.keys(pipeline);
- for (var i = 0; i < keys.length; i++) {
- var key = keys[i]; // skip non-stream keys and headOfPipeline
- // which is just a duplicate
-
- if (key === 'headOfPipeline' || !pipeline[key].on) {
- continue;
- }
- pipeline[key].on('log', retriggerForStream.bind(transmuxer, key));
- }
- };
- /**
- * Compare two arrays (even typed) for same-ness
- */
-
- var arrayEquals = function (a, b) {
- var i;
- if (a.length !== b.length) {
- return false;
- } // compare the value of each element in the array
-
- for (i = 0; i < a.length; i++) {
- if (a[i] !== b[i]) {
- return false;
- }
- }
- return true;
- };
- var generateSegmentTimingInfo = function (baseMediaDecodeTime, startDts, startPts, endDts, endPts, prependedContentDuration) {
- var ptsOffsetFromDts = startPts - startDts,
- decodeDuration = endDts - startDts,
- presentationDuration = endPts - startPts; // The PTS and DTS values are based on the actual stream times from the segment,
- // however, the player time values will reflect a start from the baseMediaDecodeTime.
- // In order to provide relevant values for the player times, base timing info on the
- // baseMediaDecodeTime and the DTS and PTS durations of the segment.
-
- return {
- start: {
- dts: baseMediaDecodeTime,
- pts: baseMediaDecodeTime + ptsOffsetFromDts
- },
- end: {
- dts: baseMediaDecodeTime + decodeDuration,
- pts: baseMediaDecodeTime + presentationDuration
- },
- prependedContentDuration: prependedContentDuration,
- baseMediaDecodeTime: baseMediaDecodeTime
- };
- };
- /**
- * Constructs a single-track, ISO BMFF media segment from AAC data
- * events. The output of this stream can be fed to a SourceBuffer
- * configured with a suitable initialization segment.
- * @param track {object} track metadata configuration
- * @param options {object} transmuxer options object
- * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
- * in the source; false to adjust the first segment to start at 0.
- */
-
- AudioSegmentStream = function (track, options) {
- var adtsFrames = [],
- sequenceNumber,
- earliestAllowedDts = 0,
- audioAppendStartTs = 0,
- videoBaseMediaDecodeTime = Infinity;
- options = options || {};
- sequenceNumber = options.firstSequenceNumber || 0;
- AudioSegmentStream.prototype.init.call(this);
- this.push = function (data) {
- trackDecodeInfo.collectDtsInfo(track, data);
- if (track) {
- AUDIO_PROPERTIES.forEach(function (prop) {
- track[prop] = data[prop];
- });
- } // buffer audio data until end() is called
-
- adtsFrames.push(data);
- };
- this.setEarliestDts = function (earliestDts) {
- earliestAllowedDts = earliestDts;
- };
- this.setVideoBaseMediaDecodeTime = function (baseMediaDecodeTime) {
- videoBaseMediaDecodeTime = baseMediaDecodeTime;
- };
- this.setAudioAppendStart = function (timestamp) {
- audioAppendStartTs = timestamp;
- };
- this.flush = function () {
- var frames, moof, mdat, boxes, frameDuration, segmentDuration, videoClockCyclesOfSilencePrefixed; // return early if no audio data has been observed
-
- if (adtsFrames.length === 0) {
- this.trigger('done', 'AudioSegmentStream');
- return;
- }
- frames = audioFrameUtils.trimAdtsFramesByEarliestDts(adtsFrames, track, earliestAllowedDts);
- track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps); // amount of audio filled but the value is in video clock rather than audio clock
-
- videoClockCyclesOfSilencePrefixed = audioFrameUtils.prefixWithSilence(track, frames, audioAppendStartTs, videoBaseMediaDecodeTime); // we have to build the index from byte locations to
- // samples (that is, adts frames) in the audio data
-
- track.samples = audioFrameUtils.generateSampleTable(frames); // concatenate the audio data to constuct the mdat
-
- mdat = mp4.mdat(audioFrameUtils.concatenateFrameData(frames));
- adtsFrames = [];
- moof = mp4.moof(sequenceNumber, [track]);
- boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // bump the sequence number for next time
-
- sequenceNumber++;
- boxes.set(moof);
- boxes.set(mdat, moof.byteLength);
- trackDecodeInfo.clearDtsInfo(track);
- frameDuration = Math.ceil(ONE_SECOND_IN_TS$1 * 1024 / track.samplerate); // TODO this check was added to maintain backwards compatibility (particularly with
- // tests) on adding the timingInfo event. However, it seems unlikely that there's a
- // valid use-case where an init segment/data should be triggered without associated
- // frames. Leaving for now, but should be looked into.
-
- if (frames.length) {
- segmentDuration = frames.length * frameDuration;
- this.trigger('segmentTimingInfo', generateSegmentTimingInfo(
- // The audio track's baseMediaDecodeTime is in audio clock cycles, but the
- // frame info is in video clock cycles. Convert to match expectation of
- // listeners (that all timestamps will be based on video clock cycles).
- clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate),
- // frame times are already in video clock, as is segment duration
- frames[0].dts, frames[0].pts, frames[0].dts + segmentDuration, frames[0].pts + segmentDuration, videoClockCyclesOfSilencePrefixed || 0));
- this.trigger('timingInfo', {
- start: frames[0].pts,
- end: frames[0].pts + segmentDuration
- });
- }
- this.trigger('data', {
- track: track,
- boxes: boxes
- });
- this.trigger('done', 'AudioSegmentStream');
- };
- this.reset = function () {
- trackDecodeInfo.clearDtsInfo(track);
- adtsFrames = [];
- this.trigger('reset');
- };
- };
- AudioSegmentStream.prototype = new Stream();
- /**
- * Constructs a single-track, ISO BMFF media segment from H264 data
- * events. The output of this stream can be fed to a SourceBuffer
- * configured with a suitable initialization segment.
- * @param track {object} track metadata configuration
- * @param options {object} transmuxer options object
- * @param options.alignGopsAtEnd {boolean} If true, start from the end of the
- * gopsToAlignWith list when attempting to align gop pts
- * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
- * in the source; false to adjust the first segment to start at 0.
- */
-
- VideoSegmentStream = function (track, options) {
- var sequenceNumber,
- nalUnits = [],
- gopsToAlignWith = [],
- config,
- pps;
- options = options || {};
- sequenceNumber = options.firstSequenceNumber || 0;
- VideoSegmentStream.prototype.init.call(this);
- delete track.minPTS;
- this.gopCache_ = [];
- /**
- * Constructs a ISO BMFF segment given H264 nalUnits
- * @param {Object} nalUnit A data event representing a nalUnit
- * @param {String} nalUnit.nalUnitType
- * @param {Object} nalUnit.config Properties for a mp4 track
- * @param {Uint8Array} nalUnit.data The nalUnit bytes
- * @see lib/codecs/h264.js
- **/
-
- this.push = function (nalUnit) {
- trackDecodeInfo.collectDtsInfo(track, nalUnit); // record the track config
-
- if (nalUnit.nalUnitType === 'seq_parameter_set_rbsp' && !config) {
- config = nalUnit.config;
- track.sps = [nalUnit.data];
- VIDEO_PROPERTIES.forEach(function (prop) {
- track[prop] = config[prop];
- }, this);
- }
- if (nalUnit.nalUnitType === 'pic_parameter_set_rbsp' && !pps) {
- pps = nalUnit.data;
- track.pps = [nalUnit.data];
- } // buffer video until flush() is called
-
- nalUnits.push(nalUnit);
- };
- /**
- * Pass constructed ISO BMFF track and boxes on to the
- * next stream in the pipeline
- **/
-
- this.flush = function () {
- var frames,
- gopForFusion,
- gops,
- moof,
- mdat,
- boxes,
- prependedContentDuration = 0,
- firstGop,
- lastGop; // Throw away nalUnits at the start of the byte stream until
- // we find the first AUD
-
- while (nalUnits.length) {
- if (nalUnits[0].nalUnitType === 'access_unit_delimiter_rbsp') {
- break;
- }
- nalUnits.shift();
- } // Return early if no video data has been observed
-
- if (nalUnits.length === 0) {
- this.resetStream_();
- this.trigger('done', 'VideoSegmentStream');
- return;
- } // Organize the raw nal-units into arrays that represent
- // higher-level constructs such as frames and gops
- // (group-of-pictures)
-
- frames = frameUtils.groupNalsIntoFrames(nalUnits);
- gops = frameUtils.groupFramesIntoGops(frames); // If the first frame of this fragment is not a keyframe we have
- // a problem since MSE (on Chrome) requires a leading keyframe.
- //
- // We have two approaches to repairing this situation:
- // 1) GOP-FUSION:
- // This is where we keep track of the GOPS (group-of-pictures)
- // from previous fragments and attempt to find one that we can
- // prepend to the current fragment in order to create a valid
- // fragment.
- // 2) KEYFRAME-PULLING:
- // Here we search for the first keyframe in the fragment and
- // throw away all the frames between the start of the fragment
- // and that keyframe. We then extend the duration and pull the
- // PTS of the keyframe forward so that it covers the time range
- // of the frames that were disposed of.
- //
- // #1 is far prefereable over #2 which can cause "stuttering" but
- // requires more things to be just right.
-
- if (!gops[0][0].keyFrame) {
- // Search for a gop for fusion from our gopCache
- gopForFusion = this.getGopForFusion_(nalUnits[0], track);
- if (gopForFusion) {
- // in order to provide more accurate timing information about the segment, save
- // the number of seconds prepended to the original segment due to GOP fusion
- prependedContentDuration = gopForFusion.duration;
- gops.unshift(gopForFusion); // Adjust Gops' metadata to account for the inclusion of the
- // new gop at the beginning
-
- gops.byteLength += gopForFusion.byteLength;
- gops.nalCount += gopForFusion.nalCount;
- gops.pts = gopForFusion.pts;
- gops.dts = gopForFusion.dts;
- gops.duration += gopForFusion.duration;
- } else {
- // If we didn't find a candidate gop fall back to keyframe-pulling
- gops = frameUtils.extendFirstKeyFrame(gops);
- }
- } // Trim gops to align with gopsToAlignWith
-
- if (gopsToAlignWith.length) {
- var alignedGops;
- if (options.alignGopsAtEnd) {
- alignedGops = this.alignGopsAtEnd_(gops);
- } else {
- alignedGops = this.alignGopsAtStart_(gops);
- }
- if (!alignedGops) {
- // save all the nals in the last GOP into the gop cache
- this.gopCache_.unshift({
- gop: gops.pop(),
- pps: track.pps,
- sps: track.sps
- }); // Keep a maximum of 6 GOPs in the cache
-
- this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits
-
- nalUnits = []; // return early no gops can be aligned with desired gopsToAlignWith
-
- this.resetStream_();
- this.trigger('done', 'VideoSegmentStream');
- return;
- } // Some gops were trimmed. clear dts info so minSegmentDts and pts are correct
- // when recalculated before sending off to CoalesceStream
-
- trackDecodeInfo.clearDtsInfo(track);
- gops = alignedGops;
- }
- trackDecodeInfo.collectDtsInfo(track, gops); // First, we have to build the index from byte locations to
- // samples (that is, frames) in the video data
-
- track.samples = frameUtils.generateSampleTable(gops); // Concatenate the video data and construct the mdat
-
- mdat = mp4.mdat(frameUtils.concatenateNalData(gops));
- track.baseMediaDecodeTime = trackDecodeInfo.calculateTrackBaseMediaDecodeTime(track, options.keepOriginalTimestamps);
- this.trigger('processedGopsInfo', gops.map(function (gop) {
- return {
- pts: gop.pts,
- dts: gop.dts,
- byteLength: gop.byteLength
- };
- }));
- firstGop = gops[0];
- lastGop = gops[gops.length - 1];
- this.trigger('segmentTimingInfo', generateSegmentTimingInfo(track.baseMediaDecodeTime, firstGop.dts, firstGop.pts, lastGop.dts + lastGop.duration, lastGop.pts + lastGop.duration, prependedContentDuration));
- this.trigger('timingInfo', {
- start: gops[0].pts,
- end: gops[gops.length - 1].pts + gops[gops.length - 1].duration
- }); // save all the nals in the last GOP into the gop cache
-
- this.gopCache_.unshift({
- gop: gops.pop(),
- pps: track.pps,
- sps: track.sps
- }); // Keep a maximum of 6 GOPs in the cache
-
- this.gopCache_.length = Math.min(6, this.gopCache_.length); // Clear nalUnits
-
- nalUnits = [];
- this.trigger('baseMediaDecodeTime', track.baseMediaDecodeTime);
- this.trigger('timelineStartInfo', track.timelineStartInfo);
- moof = mp4.moof(sequenceNumber, [track]); // it would be great to allocate this array up front instead of
- // throwing away hundreds of media segment fragments
-
- boxes = new Uint8Array(moof.byteLength + mdat.byteLength); // Bump the sequence number for next time
-
- sequenceNumber++;
- boxes.set(moof);
- boxes.set(mdat, moof.byteLength);
- this.trigger('data', {
- track: track,
- boxes: boxes
- });
- this.resetStream_(); // Continue with the flush process now
-
- this.trigger('done', 'VideoSegmentStream');
- };
- this.reset = function () {
- this.resetStream_();
- nalUnits = [];
- this.gopCache_.length = 0;
- gopsToAlignWith.length = 0;
- this.trigger('reset');
- };
- this.resetStream_ = function () {
- trackDecodeInfo.clearDtsInfo(track); // reset config and pps because they may differ across segments
- // for instance, when we are rendition switching
-
- config = undefined;
- pps = undefined;
- }; // Search for a candidate Gop for gop-fusion from the gop cache and
- // return it or return null if no good candidate was found
-
- this.getGopForFusion_ = function (nalUnit) {
- var halfSecond = 45000,
- // Half-a-second in a 90khz clock
- allowableOverlap = 10000,
- // About 3 frames @ 30fps
- nearestDistance = Infinity,
- dtsDistance,
- nearestGopObj,
- currentGop,
- currentGopObj,
- i; // Search for the GOP nearest to the beginning of this nal unit
-
- for (i = 0; i < this.gopCache_.length; i++) {
- currentGopObj = this.gopCache_[i];
- currentGop = currentGopObj.gop; // Reject Gops with different SPS or PPS
-
- if (!(track.pps && arrayEquals(track.pps[0], currentGopObj.pps[0])) || !(track.sps && arrayEquals(track.sps[0], currentGopObj.sps[0]))) {
- continue;
- } // Reject Gops that would require a negative baseMediaDecodeTime
-
- if (currentGop.dts < track.timelineStartInfo.dts) {
- continue;
- } // The distance between the end of the gop and the start of the nalUnit
-
- dtsDistance = nalUnit.dts - currentGop.dts - currentGop.duration; // Only consider GOPS that start before the nal unit and end within
- // a half-second of the nal unit
-
- if (dtsDistance >= -allowableOverlap && dtsDistance <= halfSecond) {
- // Always use the closest GOP we found if there is more than
- // one candidate
- if (!nearestGopObj || nearestDistance > dtsDistance) {
- nearestGopObj = currentGopObj;
- nearestDistance = dtsDistance;
- }
- }
- }
- if (nearestGopObj) {
- return nearestGopObj.gop;
- }
- return null;
- }; // trim gop list to the first gop found that has a matching pts with a gop in the list
- // of gopsToAlignWith starting from the START of the list
-
- this.alignGopsAtStart_ = function (gops) {
- var alignIndex, gopIndex, align, gop, byteLength, nalCount, duration, alignedGops;
- byteLength = gops.byteLength;
- nalCount = gops.nalCount;
- duration = gops.duration;
- alignIndex = gopIndex = 0;
- while (alignIndex < gopsToAlignWith.length && gopIndex < gops.length) {
- align = gopsToAlignWith[alignIndex];
- gop = gops[gopIndex];
- if (align.pts === gop.pts) {
- break;
- }
- if (gop.pts > align.pts) {
- // this current gop starts after the current gop we want to align on, so increment
- // align index
- alignIndex++;
- continue;
- } // current gop starts before the current gop we want to align on. so increment gop
- // index
-
- gopIndex++;
- byteLength -= gop.byteLength;
- nalCount -= gop.nalCount;
- duration -= gop.duration;
- }
- if (gopIndex === 0) {
- // no gops to trim
- return gops;
- }
- if (gopIndex === gops.length) {
- // all gops trimmed, skip appending all gops
- return null;
- }
- alignedGops = gops.slice(gopIndex);
- alignedGops.byteLength = byteLength;
- alignedGops.duration = duration;
- alignedGops.nalCount = nalCount;
- alignedGops.pts = alignedGops[0].pts;
- alignedGops.dts = alignedGops[0].dts;
- return alignedGops;
- }; // trim gop list to the first gop found that has a matching pts with a gop in the list
- // of gopsToAlignWith starting from the END of the list
-
- this.alignGopsAtEnd_ = function (gops) {
- var alignIndex, gopIndex, align, gop, alignEndIndex, matchFound;
- alignIndex = gopsToAlignWith.length - 1;
- gopIndex = gops.length - 1;
- alignEndIndex = null;
- matchFound = false;
- while (alignIndex >= 0 && gopIndex >= 0) {
- align = gopsToAlignWith[alignIndex];
- gop = gops[gopIndex];
- if (align.pts === gop.pts) {
- matchFound = true;
- break;
- }
- if (align.pts > gop.pts) {
- alignIndex--;
- continue;
- }
- if (alignIndex === gopsToAlignWith.length - 1) {
- // gop.pts is greater than the last alignment candidate. If no match is found
- // by the end of this loop, we still want to append gops that come after this
- // point
- alignEndIndex = gopIndex;
- }
- gopIndex--;
- }
- if (!matchFound && alignEndIndex === null) {
- return null;
- }
- var trimIndex;
- if (matchFound) {
- trimIndex = gopIndex;
- } else {
- trimIndex = alignEndIndex;
- }
- if (trimIndex === 0) {
- return gops;
- }
- var alignedGops = gops.slice(trimIndex);
- var metadata = alignedGops.reduce(function (total, gop) {
- total.byteLength += gop.byteLength;
- total.duration += gop.duration;
- total.nalCount += gop.nalCount;
- return total;
- }, {
- byteLength: 0,
- duration: 0,
- nalCount: 0
- });
- alignedGops.byteLength = metadata.byteLength;
- alignedGops.duration = metadata.duration;
- alignedGops.nalCount = metadata.nalCount;
- alignedGops.pts = alignedGops[0].pts;
- alignedGops.dts = alignedGops[0].dts;
- return alignedGops;
- };
- this.alignGopsWith = function (newGopsToAlignWith) {
- gopsToAlignWith = newGopsToAlignWith;
- };
- };
- VideoSegmentStream.prototype = new Stream();
- /**
- * A Stream that can combine multiple streams (ie. audio & video)
- * into a single output segment for MSE. Also supports audio-only
- * and video-only streams.
- * @param options {object} transmuxer options object
- * @param options.keepOriginalTimestamps {boolean} If true, keep the timestamps
- * in the source; false to adjust the first segment to start at media timeline start.
- */
-
- CoalesceStream = function (options, metadataStream) {
- // Number of Tracks per output segment
- // If greater than 1, we combine multiple
- // tracks into a single segment
- this.numberOfTracks = 0;
- this.metadataStream = metadataStream;
- options = options || {};
- if (typeof options.remux !== 'undefined') {
- this.remuxTracks = !!options.remux;
- } else {
- this.remuxTracks = true;
- }
- if (typeof options.keepOriginalTimestamps === 'boolean') {
- this.keepOriginalTimestamps = options.keepOriginalTimestamps;
- } else {
- this.keepOriginalTimestamps = false;
- }
- this.pendingTracks = [];
- this.videoTrack = null;
- this.pendingBoxes = [];
- this.pendingCaptions = [];
- this.pendingMetadata = [];
- this.pendingBytes = 0;
- this.emittedTracks = 0;
- CoalesceStream.prototype.init.call(this); // Take output from multiple
-
- this.push = function (output) {
- // buffer incoming captions until the associated video segment
- // finishes
- if (output.content || output.text) {
- return this.pendingCaptions.push(output);
- } // buffer incoming id3 tags until the final flush
-
- if (output.frames) {
- return this.pendingMetadata.push(output);
- } // Add this track to the list of pending tracks and store
- // important information required for the construction of
- // the final segment
-
- this.pendingTracks.push(output.track);
- this.pendingBytes += output.boxes.byteLength; // TODO: is there an issue for this against chrome?
- // We unshift audio and push video because
- // as of Chrome 75 when switching from
- // one init segment to another if the video
- // mdat does not appear after the audio mdat
- // only audio will play for the duration of our transmux.
-
- if (output.track.type === 'video') {
- this.videoTrack = output.track;
- this.pendingBoxes.push(output.boxes);
- }
- if (output.track.type === 'audio') {
- this.audioTrack = output.track;
- this.pendingBoxes.unshift(output.boxes);
- }
- };
- };
- CoalesceStream.prototype = new Stream();
- CoalesceStream.prototype.flush = function (flushSource) {
- var offset = 0,
- event = {
- captions: [],
- captionStreams: {},
- metadata: [],
- info: {}
- },
- caption,
- id3,
- initSegment,
- timelineStartPts = 0,
- i;
- if (this.pendingTracks.length < this.numberOfTracks) {
- if (flushSource !== 'VideoSegmentStream' && flushSource !== 'AudioSegmentStream') {
- // Return because we haven't received a flush from a data-generating
- // portion of the segment (meaning that we have only recieved meta-data
- // or captions.)
- return;
- } else if (this.remuxTracks) {
- // Return until we have enough tracks from the pipeline to remux (if we
- // are remuxing audio and video into a single MP4)
- return;
- } else if (this.pendingTracks.length === 0) {
- // In the case where we receive a flush without any data having been
- // received we consider it an emitted track for the purposes of coalescing
- // `done` events.
- // We do this for the case where there is an audio and video track in the
- // segment but no audio data. (seen in several playlists with alternate
- // audio tracks and no audio present in the main TS segments.)
- this.emittedTracks++;
- if (this.emittedTracks >= this.numberOfTracks) {
- this.trigger('done');
- this.emittedTracks = 0;
- }
- return;
- }
- }
- if (this.videoTrack) {
- timelineStartPts = this.videoTrack.timelineStartInfo.pts;
- VIDEO_PROPERTIES.forEach(function (prop) {
- event.info[prop] = this.videoTrack[prop];
- }, this);
- } else if (this.audioTrack) {
- timelineStartPts = this.audioTrack.timelineStartInfo.pts;
- AUDIO_PROPERTIES.forEach(function (prop) {
- event.info[prop] = this.audioTrack[prop];
- }, this);
- }
- if (this.videoTrack || this.audioTrack) {
- if (this.pendingTracks.length === 1) {
- event.type = this.pendingTracks[0].type;
- } else {
- event.type = 'combined';
- }
- this.emittedTracks += this.pendingTracks.length;
- initSegment = mp4.initSegment(this.pendingTracks); // Create a new typed array to hold the init segment
-
- event.initSegment = new Uint8Array(initSegment.byteLength); // Create an init segment containing a moov
- // and track definitions
-
- event.initSegment.set(initSegment); // Create a new typed array to hold the moof+mdats
-
- event.data = new Uint8Array(this.pendingBytes); // Append each moof+mdat (one per track) together
-
- for (i = 0; i < this.pendingBoxes.length; i++) {
- event.data.set(this.pendingBoxes[i], offset);
- offset += this.pendingBoxes[i].byteLength;
- } // Translate caption PTS times into second offsets to match the
- // video timeline for the segment, and add track info
-
- for (i = 0; i < this.pendingCaptions.length; i++) {
- caption = this.pendingCaptions[i];
- caption.startTime = clock.metadataTsToSeconds(caption.startPts, timelineStartPts, this.keepOriginalTimestamps);
- caption.endTime = clock.metadataTsToSeconds(caption.endPts, timelineStartPts, this.keepOriginalTimestamps);
- event.captionStreams[caption.stream] = true;
- event.captions.push(caption);
- } // Translate ID3 frame PTS times into second offsets to match the
- // video timeline for the segment
-
- for (i = 0; i < this.pendingMetadata.length; i++) {
- id3 = this.pendingMetadata[i];
- id3.cueTime = clock.metadataTsToSeconds(id3.pts, timelineStartPts, this.keepOriginalTimestamps);
- event.metadata.push(id3);
- } // We add this to every single emitted segment even though we only need
- // it for the first
-
- event.metadata.dispatchType = this.metadataStream.dispatchType; // Reset stream state
-
- this.pendingTracks.length = 0;
- this.videoTrack = null;
- this.pendingBoxes.length = 0;
- this.pendingCaptions.length = 0;
- this.pendingBytes = 0;
- this.pendingMetadata.length = 0; // Emit the built segment
- // We include captions and ID3 tags for backwards compatibility,
- // ideally we should send only video and audio in the data event
-
- this.trigger('data', event); // Emit each caption to the outside world
- // Ideally, this would happen immediately on parsing captions,
- // but we need to ensure that video data is sent back first
- // so that caption timing can be adjusted to match video timing
-
- for (i = 0; i < event.captions.length; i++) {
- caption = event.captions[i];
- this.trigger('caption', caption);
- } // Emit each id3 tag to the outside world
- // Ideally, this would happen immediately on parsing the tag,
- // but we need to ensure that video data is sent back first
- // so that ID3 frame timing can be adjusted to match video timing
-
- for (i = 0; i < event.metadata.length; i++) {
- id3 = event.metadata[i];
- this.trigger('id3Frame', id3);
- }
- } // Only emit `done` if all tracks have been flushed and emitted
-
- if (this.emittedTracks >= this.numberOfTracks) {
- this.trigger('done');
- this.emittedTracks = 0;
- }
- };
- CoalesceStream.prototype.setRemux = function (val) {
- this.remuxTracks = val;
- };
- /**
- * A Stream that expects MP2T binary data as input and produces
- * corresponding media segments, suitable for use with Media Source
- * Extension (MSE) implementations that support the ISO BMFF byte
- * stream format, like Chrome.
- */
-
- Transmuxer = function (options) {
- var self = this,
- hasFlushed = true,
- videoTrack,
- audioTrack;
- Transmuxer.prototype.init.call(this);
- options = options || {};
- this.baseMediaDecodeTime = options.baseMediaDecodeTime || 0;
- this.transmuxPipeline_ = {};
- this.setupAacPipeline = function () {
- var pipeline = {};
- this.transmuxPipeline_ = pipeline;
- pipeline.type = 'aac';
- pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline
-
- pipeline.aacStream = new AacStream();
- pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
- pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
- pipeline.adtsStream = new AdtsStream();
- pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
- pipeline.headOfPipeline = pipeline.aacStream;
- pipeline.aacStream.pipe(pipeline.audioTimestampRolloverStream).pipe(pipeline.adtsStream);
- pipeline.aacStream.pipe(pipeline.timedMetadataTimestampRolloverStream).pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream);
- pipeline.metadataStream.on('timestamp', function (frame) {
- pipeline.aacStream.setTimestamp(frame.timeStamp);
- });
- pipeline.aacStream.on('data', function (data) {
- if (data.type !== 'timed-metadata' && data.type !== 'audio' || pipeline.audioSegmentStream) {
- return;
- }
- audioTrack = audioTrack || {
- timelineStartInfo: {
- baseMediaDecodeTime: self.baseMediaDecodeTime
- },
- codec: 'adts',
- type: 'audio'
- }; // hook up the audio segment stream to the first track with aac data
-
- pipeline.coalesceStream.numberOfTracks++;
- pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);
- pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));
- pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo')); // Set up the final part of the audio pipeline
-
- pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream); // emit pmt info
-
- self.trigger('trackinfo', {
- hasAudio: !!audioTrack,
- hasVideo: !!videoTrack
- });
- }); // Re-emit any data coming from the coalesce stream to the outside world
-
- pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data')); // Let the consumer know we have finished flushing the entire pipeline
-
- pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
- addPipelineLogRetriggers(this, pipeline);
- };
- this.setupTsPipeline = function () {
- var pipeline = {};
- this.transmuxPipeline_ = pipeline;
- pipeline.type = 'ts';
- pipeline.metadataStream = new m2ts.MetadataStream(); // set up the parsing pipeline
-
- pipeline.packetStream = new m2ts.TransportPacketStream();
- pipeline.parseStream = new m2ts.TransportParseStream();
- pipeline.elementaryStream = new m2ts.ElementaryStream();
- pipeline.timestampRolloverStream = new m2ts.TimestampRolloverStream();
- pipeline.adtsStream = new AdtsStream();
- pipeline.h264Stream = new H264Stream();
- pipeline.captionStream = new m2ts.CaptionStream(options);
- pipeline.coalesceStream = new CoalesceStream(options, pipeline.metadataStream);
- pipeline.headOfPipeline = pipeline.packetStream; // disassemble MPEG2-TS packets into elementary streams
-
- pipeline.packetStream.pipe(pipeline.parseStream).pipe(pipeline.elementaryStream).pipe(pipeline.timestampRolloverStream); // !!THIS ORDER IS IMPORTANT!!
- // demux the streams
-
- pipeline.timestampRolloverStream.pipe(pipeline.h264Stream);
- pipeline.timestampRolloverStream.pipe(pipeline.adtsStream);
- pipeline.timestampRolloverStream.pipe(pipeline.metadataStream).pipe(pipeline.coalesceStream); // Hook up CEA-608/708 caption stream
-
- pipeline.h264Stream.pipe(pipeline.captionStream).pipe(pipeline.coalesceStream);
- pipeline.elementaryStream.on('data', function (data) {
- var i;
- if (data.type === 'metadata') {
- i = data.tracks.length; // scan the tracks listed in the metadata
-
- while (i--) {
- if (!videoTrack && data.tracks[i].type === 'video') {
- videoTrack = data.tracks[i];
- videoTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
- } else if (!audioTrack && data.tracks[i].type === 'audio') {
- audioTrack = data.tracks[i];
- audioTrack.timelineStartInfo.baseMediaDecodeTime = self.baseMediaDecodeTime;
- }
- } // hook up the video segment stream to the first track with h264 data
-
- if (videoTrack && !pipeline.videoSegmentStream) {
- pipeline.coalesceStream.numberOfTracks++;
- pipeline.videoSegmentStream = new VideoSegmentStream(videoTrack, options);
- pipeline.videoSegmentStream.on('log', self.getLogTrigger_('videoSegmentStream'));
- pipeline.videoSegmentStream.on('timelineStartInfo', function (timelineStartInfo) {
- // When video emits timelineStartInfo data after a flush, we forward that
- // info to the AudioSegmentStream, if it exists, because video timeline
- // data takes precedence. Do not do this if keepOriginalTimestamps is set,
- // because this is a particularly subtle form of timestamp alteration.
- if (audioTrack && !options.keepOriginalTimestamps) {
- audioTrack.timelineStartInfo = timelineStartInfo; // On the first segment we trim AAC frames that exist before the
- // very earliest DTS we have seen in video because Chrome will
- // interpret any video track with a baseMediaDecodeTime that is
- // non-zero as a gap.
-
- pipeline.audioSegmentStream.setEarliestDts(timelineStartInfo.dts - self.baseMediaDecodeTime);
- }
- });
- pipeline.videoSegmentStream.on('processedGopsInfo', self.trigger.bind(self, 'gopInfo'));
- pipeline.videoSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'videoSegmentTimingInfo'));
- pipeline.videoSegmentStream.on('baseMediaDecodeTime', function (baseMediaDecodeTime) {
- if (audioTrack) {
- pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);
- }
- });
- pipeline.videoSegmentStream.on('timingInfo', self.trigger.bind(self, 'videoTimingInfo')); // Set up the final part of the video pipeline
-
- pipeline.h264Stream.pipe(pipeline.videoSegmentStream).pipe(pipeline.coalesceStream);
- }
- if (audioTrack && !pipeline.audioSegmentStream) {
- // hook up the audio segment stream to the first track with aac data
- pipeline.coalesceStream.numberOfTracks++;
- pipeline.audioSegmentStream = new AudioSegmentStream(audioTrack, options);
- pipeline.audioSegmentStream.on('log', self.getLogTrigger_('audioSegmentStream'));
- pipeline.audioSegmentStream.on('timingInfo', self.trigger.bind(self, 'audioTimingInfo'));
- pipeline.audioSegmentStream.on('segmentTimingInfo', self.trigger.bind(self, 'audioSegmentTimingInfo')); // Set up the final part of the audio pipeline
-
- pipeline.adtsStream.pipe(pipeline.audioSegmentStream).pipe(pipeline.coalesceStream);
- } // emit pmt info
-
- self.trigger('trackinfo', {
- hasAudio: !!audioTrack,
- hasVideo: !!videoTrack
- });
- }
- }); // Re-emit any data coming from the coalesce stream to the outside world
-
- pipeline.coalesceStream.on('data', this.trigger.bind(this, 'data'));
- pipeline.coalesceStream.on('id3Frame', function (id3Frame) {
- id3Frame.dispatchType = pipeline.metadataStream.dispatchType;
- self.trigger('id3Frame', id3Frame);
- });
- pipeline.coalesceStream.on('caption', this.trigger.bind(this, 'caption')); // Let the consumer know we have finished flushing the entire pipeline
-
- pipeline.coalesceStream.on('done', this.trigger.bind(this, 'done'));
- addPipelineLogRetriggers(this, pipeline);
- }; // hook up the segment streams once track metadata is delivered
-
- this.setBaseMediaDecodeTime = function (baseMediaDecodeTime) {
- var pipeline = this.transmuxPipeline_;
- if (!options.keepOriginalTimestamps) {
- this.baseMediaDecodeTime = baseMediaDecodeTime;
- }
- if (audioTrack) {
- audioTrack.timelineStartInfo.dts = undefined;
- audioTrack.timelineStartInfo.pts = undefined;
- trackDecodeInfo.clearDtsInfo(audioTrack);
- if (pipeline.audioTimestampRolloverStream) {
- pipeline.audioTimestampRolloverStream.discontinuity();
- }
- }
- if (videoTrack) {
- if (pipeline.videoSegmentStream) {
- pipeline.videoSegmentStream.gopCache_ = [];
- }
- videoTrack.timelineStartInfo.dts = undefined;
- videoTrack.timelineStartInfo.pts = undefined;
- trackDecodeInfo.clearDtsInfo(videoTrack);
- pipeline.captionStream.reset();
- }
- if (pipeline.timestampRolloverStream) {
- pipeline.timestampRolloverStream.discontinuity();
- }
- };
- this.setAudioAppendStart = function (timestamp) {
- if (audioTrack) {
- this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);
- }
- };
- this.setRemux = function (val) {
- var pipeline = this.transmuxPipeline_;
- options.remux = val;
- if (pipeline && pipeline.coalesceStream) {
- pipeline.coalesceStream.setRemux(val);
- }
- };
- this.alignGopsWith = function (gopsToAlignWith) {
- if (videoTrack && this.transmuxPipeline_.videoSegmentStream) {
- this.transmuxPipeline_.videoSegmentStream.alignGopsWith(gopsToAlignWith);
- }
- };
- this.getLogTrigger_ = function (key) {
- var self = this;
- return function (event) {
- event.stream = key;
- self.trigger('log', event);
- };
- }; // feed incoming data to the front of the parsing pipeline
-
- this.push = function (data) {
- if (hasFlushed) {
- var isAac = isLikelyAacData(data);
- if (isAac && this.transmuxPipeline_.type !== 'aac') {
- this.setupAacPipeline();
- } else if (!isAac && this.transmuxPipeline_.type !== 'ts') {
- this.setupTsPipeline();
- }
- hasFlushed = false;
- }
- this.transmuxPipeline_.headOfPipeline.push(data);
- }; // flush any buffered data
-
- this.flush = function () {
- hasFlushed = true; // Start at the top of the pipeline and flush all pending work
-
- this.transmuxPipeline_.headOfPipeline.flush();
- };
- this.endTimeline = function () {
- this.transmuxPipeline_.headOfPipeline.endTimeline();
- };
- this.reset = function () {
- if (this.transmuxPipeline_.headOfPipeline) {
- this.transmuxPipeline_.headOfPipeline.reset();
- }
- }; // Caption data has to be reset when seeking outside buffered range
-
- this.resetCaptions = function () {
- if (this.transmuxPipeline_.captionStream) {
- this.transmuxPipeline_.captionStream.reset();
- }
- };
- };
- Transmuxer.prototype = new Stream();
- var transmuxer = {
- Transmuxer: Transmuxer,
- VideoSegmentStream: VideoSegmentStream,
- AudioSegmentStream: AudioSegmentStream,
- AUDIO_PROPERTIES: AUDIO_PROPERTIES,
- VIDEO_PROPERTIES: VIDEO_PROPERTIES,
- // exported for testing
- generateSegmentTimingInfo: generateSegmentTimingInfo
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- */
-
- var toUnsigned$3 = function (value) {
- return value >>> 0;
- };
- var toHexString$1 = function (value) {
- return ('00' + value.toString(16)).slice(-2);
- };
- var bin = {
- toUnsigned: toUnsigned$3,
- toHexString: toHexString$1
- };
- var parseType$3 = function (buffer) {
- var result = '';
- result += String.fromCharCode(buffer[0]);
- result += String.fromCharCode(buffer[1]);
- result += String.fromCharCode(buffer[2]);
- result += String.fromCharCode(buffer[3]);
- return result;
- };
- var parseType_1 = parseType$3;
- var toUnsigned$2 = bin.toUnsigned;
- var parseType$2 = parseType_1;
- var findBox$2 = function (data, path) {
- var results = [],
- i,
- size,
- type,
- end,
- subresults;
- if (!path.length) {
- // short-circuit the search for empty paths
- return null;
- }
- for (i = 0; i < data.byteLength;) {
- size = toUnsigned$2(data[i] << 24 | data[i + 1] << 16 | data[i + 2] << 8 | data[i + 3]);
- type = parseType$2(data.subarray(i + 4, i + 8));
- end = size > 1 ? i + size : data.byteLength;
- if (type === path[0]) {
- if (path.length === 1) {
- // this is the end of the path and we've found the box we were
- // looking for
- results.push(data.subarray(i + 8, end));
- } else {
- // recursively search for the next box along the path
- subresults = findBox$2(data.subarray(i + 8, end), path.slice(1));
- if (subresults.length) {
- results = results.concat(subresults);
- }
- }
- }
- i = end;
- } // we've finished searching all of data
-
- return results;
- };
- var findBox_1 = findBox$2;
- var toUnsigned$1 = bin.toUnsigned;
- var getUint64$2 = numbers.getUint64;
- var tfdt = function (data) {
- var result = {
- version: data[0],
- flags: new Uint8Array(data.subarray(1, 4))
- };
- if (result.version === 1) {
- result.baseMediaDecodeTime = getUint64$2(data.subarray(4));
- } else {
- result.baseMediaDecodeTime = toUnsigned$1(data[4] << 24 | data[5] << 16 | data[6] << 8 | data[7]);
- }
- return result;
- };
- var parseTfdt$2 = tfdt;
- var parseSampleFlags$1 = function (flags) {
- return {
- isLeading: (flags[0] & 0x0c) >>> 2,
- dependsOn: flags[0] & 0x03,
- isDependedOn: (flags[1] & 0xc0) >>> 6,
- hasRedundancy: (flags[1] & 0x30) >>> 4,
- paddingValue: (flags[1] & 0x0e) >>> 1,
- isNonSyncSample: flags[1] & 0x01,
- degradationPriority: flags[2] << 8 | flags[3]
- };
- };
- var parseSampleFlags_1 = parseSampleFlags$1;
- var parseSampleFlags = parseSampleFlags_1;
- var trun = function (data) {
- var result = {
- version: data[0],
- flags: new Uint8Array(data.subarray(1, 4)),
- samples: []
- },
- view = new DataView(data.buffer, data.byteOffset, data.byteLength),
- // Flag interpretation
- dataOffsetPresent = result.flags[2] & 0x01,
- // compare with 2nd byte of 0x1
- firstSampleFlagsPresent = result.flags[2] & 0x04,
- // compare with 2nd byte of 0x4
- sampleDurationPresent = result.flags[1] & 0x01,
- // compare with 2nd byte of 0x100
- sampleSizePresent = result.flags[1] & 0x02,
- // compare with 2nd byte of 0x200
- sampleFlagsPresent = result.flags[1] & 0x04,
- // compare with 2nd byte of 0x400
- sampleCompositionTimeOffsetPresent = result.flags[1] & 0x08,
- // compare with 2nd byte of 0x800
- sampleCount = view.getUint32(4),
- offset = 8,
- sample;
- if (dataOffsetPresent) {
- // 32 bit signed integer
- result.dataOffset = view.getInt32(offset);
- offset += 4;
- } // Overrides the flags for the first sample only. The order of
- // optional values will be: duration, size, compositionTimeOffset
-
- if (firstSampleFlagsPresent && sampleCount) {
- sample = {
- flags: parseSampleFlags(data.subarray(offset, offset + 4))
- };
- offset += 4;
- if (sampleDurationPresent) {
- sample.duration = view.getUint32(offset);
- offset += 4;
- }
- if (sampleSizePresent) {
- sample.size = view.getUint32(offset);
- offset += 4;
- }
- if (sampleCompositionTimeOffsetPresent) {
- if (result.version === 1) {
- sample.compositionTimeOffset = view.getInt32(offset);
- } else {
- sample.compositionTimeOffset = view.getUint32(offset);
- }
- offset += 4;
- }
- result.samples.push(sample);
- sampleCount--;
- }
- while (sampleCount--) {
- sample = {};
- if (sampleDurationPresent) {
- sample.duration = view.getUint32(offset);
- offset += 4;
- }
- if (sampleSizePresent) {
- sample.size = view.getUint32(offset);
- offset += 4;
- }
- if (sampleFlagsPresent) {
- sample.flags = parseSampleFlags(data.subarray(offset, offset + 4));
- offset += 4;
- }
- if (sampleCompositionTimeOffsetPresent) {
- if (result.version === 1) {
- sample.compositionTimeOffset = view.getInt32(offset);
- } else {
- sample.compositionTimeOffset = view.getUint32(offset);
- }
- offset += 4;
- }
- result.samples.push(sample);
- }
- return result;
- };
- var parseTrun$2 = trun;
- var tfhd = function (data) {
- var view = new DataView(data.buffer, data.byteOffset, data.byteLength),
- result = {
- version: data[0],
- flags: new Uint8Array(data.subarray(1, 4)),
- trackId: view.getUint32(4)
- },
- baseDataOffsetPresent = result.flags[2] & 0x01,
- sampleDescriptionIndexPresent = result.flags[2] & 0x02,
- defaultSampleDurationPresent = result.flags[2] & 0x08,
- defaultSampleSizePresent = result.flags[2] & 0x10,
- defaultSampleFlagsPresent = result.flags[2] & 0x20,
- durationIsEmpty = result.flags[0] & 0x010000,
- defaultBaseIsMoof = result.flags[0] & 0x020000,
- i;
- i = 8;
- if (baseDataOffsetPresent) {
- i += 4; // truncate top 4 bytes
- // FIXME: should we read the full 64 bits?
-
- result.baseDataOffset = view.getUint32(12);
- i += 4;
- }
- if (sampleDescriptionIndexPresent) {
- result.sampleDescriptionIndex = view.getUint32(i);
- i += 4;
- }
- if (defaultSampleDurationPresent) {
- result.defaultSampleDuration = view.getUint32(i);
- i += 4;
- }
- if (defaultSampleSizePresent) {
- result.defaultSampleSize = view.getUint32(i);
- i += 4;
- }
- if (defaultSampleFlagsPresent) {
- result.defaultSampleFlags = view.getUint32(i);
- }
- if (durationIsEmpty) {
- result.durationIsEmpty = true;
- }
- if (!baseDataOffsetPresent && defaultBaseIsMoof) {
- result.baseDataOffsetIsMoof = true;
- }
- return result;
- };
- var parseTfhd$2 = tfhd;
- var win;
- if (typeof window !== "undefined") {
- win = window;
- } else if (typeof commonjsGlobal !== "undefined") {
- win = commonjsGlobal;
- } else if (typeof self !== "undefined") {
- win = self;
- } else {
- win = {};
- }
- var window_1 = win;
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Reads in-band CEA-708 captions out of FMP4 segments.
- * @see https://en.wikipedia.org/wiki/CEA-708
- */
-
- var discardEmulationPreventionBytes = captionPacketParser.discardEmulationPreventionBytes;
- var CaptionStream = captionStream.CaptionStream;
- var findBox$1 = findBox_1;
- var parseTfdt$1 = parseTfdt$2;
- var parseTrun$1 = parseTrun$2;
- var parseTfhd$1 = parseTfhd$2;
- var window$2 = window_1;
- /**
- * Maps an offset in the mdat to a sample based on the the size of the samples.
- * Assumes that `parseSamples` has been called first.
- *
- * @param {Number} offset - The offset into the mdat
- * @param {Object[]} samples - An array of samples, parsed using `parseSamples`
- * @return {?Object} The matching sample, or null if no match was found.
- *
- * @see ISO-BMFF-12/2015, Section 8.8.8
- **/
-
- var mapToSample = function (offset, samples) {
- var approximateOffset = offset;
- for (var i = 0; i < samples.length; i++) {
- var sample = samples[i];
- if (approximateOffset < sample.size) {
- return sample;
- }
- approximateOffset -= sample.size;
- }
- return null;
- };
- /**
- * Finds SEI nal units contained in a Media Data Box.
- * Assumes that `parseSamples` has been called first.
- *
- * @param {Uint8Array} avcStream - The bytes of the mdat
- * @param {Object[]} samples - The samples parsed out by `parseSamples`
- * @param {Number} trackId - The trackId of this video track
- * @return {Object[]} seiNals - the parsed SEI NALUs found.
- * The contents of the seiNal should match what is expected by
- * CaptionStream.push (nalUnitType, size, data, escapedRBSP, pts, dts)
- *
- * @see ISO-BMFF-12/2015, Section 8.1.1
- * @see Rec. ITU-T H.264, 7.3.2.3.1
- **/
-
- var findSeiNals = function (avcStream, samples, trackId) {
- var avcView = new DataView(avcStream.buffer, avcStream.byteOffset, avcStream.byteLength),
- result = {
- logs: [],
- seiNals: []
- },
- seiNal,
- i,
- length,
- lastMatchedSample;
- for (i = 0; i + 4 < avcStream.length; i += length) {
- length = avcView.getUint32(i);
- i += 4; // Bail if this doesn't appear to be an H264 stream
-
- if (length <= 0) {
- continue;
- }
- switch (avcStream[i] & 0x1F) {
- case 0x06:
- var data = avcStream.subarray(i + 1, i + 1 + length);
- var matchingSample = mapToSample(i, samples);
- seiNal = {
- nalUnitType: 'sei_rbsp',
- size: length,
- data: data,
- escapedRBSP: discardEmulationPreventionBytes(data),
- trackId: trackId
- };
- if (matchingSample) {
- seiNal.pts = matchingSample.pts;
- seiNal.dts = matchingSample.dts;
- lastMatchedSample = matchingSample;
- } else if (lastMatchedSample) {
- // If a matching sample cannot be found, use the last
- // sample's values as they should be as close as possible
- seiNal.pts = lastMatchedSample.pts;
- seiNal.dts = lastMatchedSample.dts;
- } else {
- result.logs.push({
- level: 'warn',
- message: 'We\'ve encountered a nal unit without data at ' + i + ' for trackId ' + trackId + '. See mux.js#223.'
- });
- break;
- }
- result.seiNals.push(seiNal);
- break;
- }
- }
- return result;
- };
- /**
- * Parses sample information out of Track Run Boxes and calculates
- * the absolute presentation and decode timestamps of each sample.
- *
- * @param {Array<Uint8Array>} truns - The Trun Run boxes to be parsed
- * @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt
- @see ISO-BMFF-12/2015, Section 8.8.12
- * @param {Object} tfhd - The parsed Track Fragment Header
- * @see inspect.parseTfhd
- * @return {Object[]} the parsed samples
- *
- * @see ISO-BMFF-12/2015, Section 8.8.8
- **/
-
- var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {
- var currentDts = baseMediaDecodeTime;
- var defaultSampleDuration = tfhd.defaultSampleDuration || 0;
- var defaultSampleSize = tfhd.defaultSampleSize || 0;
- var trackId = tfhd.trackId;
- var allSamples = [];
- truns.forEach(function (trun) {
- // Note: We currently do not parse the sample table as well
- // as the trun. It's possible some sources will require this.
- // moov > trak > mdia > minf > stbl
- var trackRun = parseTrun$1(trun);
- var samples = trackRun.samples;
- samples.forEach(function (sample) {
- if (sample.duration === undefined) {
- sample.duration = defaultSampleDuration;
- }
- if (sample.size === undefined) {
- sample.size = defaultSampleSize;
- }
- sample.trackId = trackId;
- sample.dts = currentDts;
- if (sample.compositionTimeOffset === undefined) {
- sample.compositionTimeOffset = 0;
- }
- if (typeof currentDts === 'bigint') {
- sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);
- currentDts += window$2.BigInt(sample.duration);
- } else {
- sample.pts = currentDts + sample.compositionTimeOffset;
- currentDts += sample.duration;
- }
- });
- allSamples = allSamples.concat(samples);
- });
- return allSamples;
- };
- /**
- * Parses out caption nals from an FMP4 segment's video tracks.
- *
- * @param {Uint8Array} segment - The bytes of a single segment
- * @param {Number} videoTrackId - The trackId of a video track in the segment
- * @return {Object.<Number, Object[]>} A mapping of video trackId to
- * a list of seiNals found in that track
- **/
-
- var parseCaptionNals = function (segment, videoTrackId) {
- // To get the samples
- var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units
-
- var mdats = findBox$1(segment, ['mdat']);
- var captionNals = {};
- var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs
-
- mdats.forEach(function (mdat, index) {
- var matchingTraf = trafs[index];
- mdatTrafPairs.push({
- mdat: mdat,
- traf: matchingTraf
- });
- });
- mdatTrafPairs.forEach(function (pair) {
- var mdat = pair.mdat;
- var traf = pair.traf;
- var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf
-
- var headerInfo = parseTfhd$1(tfhd[0]);
- var trackId = headerInfo.trackId;
- var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf
-
- var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;
- var truns = findBox$1(traf, ['trun']);
- var samples;
- var result; // Only parse video data for the chosen video track
-
- if (videoTrackId === trackId && truns.length > 0) {
- samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);
- result = findSeiNals(mdat, samples, trackId);
- if (!captionNals[trackId]) {
- captionNals[trackId] = {
- seiNals: [],
- logs: []
- };
- }
- captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);
- captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);
- }
- });
- return captionNals;
- };
- /**
- * Parses out inband captions from an MP4 container and returns
- * caption objects that can be used by WebVTT and the TextTrack API.
- * @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue
- * @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack
- * Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first
- *
- * @param {Uint8Array} segment - The fmp4 segment containing embedded captions
- * @param {Number} trackId - The id of the video track to parse
- * @param {Number} timescale - The timescale for the video track from the init segment
- *
- * @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks
- * @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds
- * @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds
- * @return {Object[]} parsedCaptions[].content - A list of individual caption segments
- * @return {String} parsedCaptions[].content.text - The visible content of the caption segment
- * @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment
- * @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80
- **/
-
- var parseEmbeddedCaptions = function (segment, trackId, timescale) {
- var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
-
- if (trackId === null) {
- return null;
- }
- captionNals = parseCaptionNals(segment, trackId);
- var trackNals = captionNals[trackId] || {};
- return {
- seiNals: trackNals.seiNals,
- logs: trackNals.logs,
- timescale: timescale
- };
- };
- /**
- * Converts SEI NALUs into captions that can be used by video.js
- **/
-
- var CaptionParser = function () {
- var isInitialized = false;
- var captionStream; // Stores segments seen before trackId and timescale are set
-
- var segmentCache; // Stores video track ID of the track being parsed
-
- var trackId; // Stores the timescale of the track being parsed
-
- var timescale; // Stores captions parsed so far
-
- var parsedCaptions; // Stores whether we are receiving partial data or not
-
- var parsingPartial;
- /**
- * A method to indicate whether a CaptionParser has been initalized
- * @returns {Boolean}
- **/
-
- this.isInitialized = function () {
- return isInitialized;
- };
- /**
- * Initializes the underlying CaptionStream, SEI NAL parsing
- * and management, and caption collection
- **/
-
- this.init = function (options) {
- captionStream = new CaptionStream();
- isInitialized = true;
- parsingPartial = options ? options.isPartial : false; // Collect dispatched captions
-
- captionStream.on('data', function (event) {
- // Convert to seconds in the source's timescale
- event.startTime = event.startPts / timescale;
- event.endTime = event.endPts / timescale;
- parsedCaptions.captions.push(event);
- parsedCaptions.captionStreams[event.stream] = true;
- });
- captionStream.on('log', function (log) {
- parsedCaptions.logs.push(log);
- });
- };
- /**
- * Determines if a new video track will be selected
- * or if the timescale changed
- * @return {Boolean}
- **/
-
- this.isNewInit = function (videoTrackIds, timescales) {
- if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {
- return false;
- }
- return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];
- };
- /**
- * Parses out SEI captions and interacts with underlying
- * CaptionStream to return dispatched captions
- *
- * @param {Uint8Array} segment - The fmp4 segment containing embedded captions
- * @param {Number[]} videoTrackIds - A list of video tracks found in the init segment
- * @param {Object.<Number, Number>} timescales - The timescales found in the init segment
- * @see parseEmbeddedCaptions
- * @see m2ts/caption-stream.js
- **/
-
- this.parse = function (segment, videoTrackIds, timescales) {
- var parsedData;
- if (!this.isInitialized()) {
- return null; // This is not likely to be a video segment
- } else if (!videoTrackIds || !timescales) {
- return null;
- } else if (this.isNewInit(videoTrackIds, timescales)) {
- // Use the first video track only as there is no
- // mechanism to switch to other video tracks
- trackId = videoTrackIds[0];
- timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment
- // data until we have one.
- // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
- } else if (trackId === null || !timescale) {
- segmentCache.push(segment);
- return null;
- } // Now that a timescale and trackId is set, parse cached segments
-
- while (segmentCache.length > 0) {
- var cachedSegment = segmentCache.shift();
- this.parse(cachedSegment, videoTrackIds, timescales);
- }
- parsedData = parseEmbeddedCaptions(segment, trackId, timescale);
- if (parsedData && parsedData.logs) {
- parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);
- }
- if (parsedData === null || !parsedData.seiNals) {
- if (parsedCaptions.logs.length) {
- return {
- logs: parsedCaptions.logs,
- captions: [],
- captionStreams: []
- };
- }
- return null;
- }
- this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched
-
- this.flushStream();
- return parsedCaptions;
- };
- /**
- * Pushes SEI NALUs onto CaptionStream
- * @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`
- * Assumes that `parseCaptionNals` has been called first
- * @see m2ts/caption-stream.js
- **/
-
- this.pushNals = function (nals) {
- if (!this.isInitialized() || !nals || nals.length === 0) {
- return null;
- }
- nals.forEach(function (nal) {
- captionStream.push(nal);
- });
- };
- /**
- * Flushes underlying CaptionStream to dispatch processed, displayable captions
- * @see m2ts/caption-stream.js
- **/
-
- this.flushStream = function () {
- if (!this.isInitialized()) {
- return null;
- }
- if (!parsingPartial) {
- captionStream.flush();
- } else {
- captionStream.partialFlush();
- }
- };
- /**
- * Reset caption buckets for new data
- **/
-
- this.clearParsedCaptions = function () {
- parsedCaptions.captions = [];
- parsedCaptions.captionStreams = {};
- parsedCaptions.logs = [];
- };
- /**
- * Resets underlying CaptionStream
- * @see m2ts/caption-stream.js
- **/
-
- this.resetCaptionStream = function () {
- if (!this.isInitialized()) {
- return null;
- }
- captionStream.reset();
- };
- /**
- * Convenience method to clear all captions flushed from the
- * CaptionStream and still being parsed
- * @see m2ts/caption-stream.js
- **/
-
- this.clearAllCaptions = function () {
- this.clearParsedCaptions();
- this.resetCaptionStream();
- };
- /**
- * Reset caption parser
- **/
-
- this.reset = function () {
- segmentCache = [];
- trackId = null;
- timescale = null;
- if (!parsedCaptions) {
- parsedCaptions = {
- captions: [],
- // CC1, CC2, CC3, CC4
- captionStreams: {},
- logs: []
- };
- } else {
- this.clearParsedCaptions();
- }
- this.resetCaptionStream();
- };
- this.reset();
- };
- var captionParser = CaptionParser;
- /**
- * Returns the first string in the data array ending with a null char '\0'
- * @param {UInt8} data
- * @returns the string with the null char
- */
-
- var uint8ToCString$1 = function (data) {
- var index = 0;
- var curChar = String.fromCharCode(data[index]);
- var retString = '';
- while (curChar !== '\0') {
- retString += curChar;
- index++;
- curChar = String.fromCharCode(data[index]);
- } // Add nullChar
-
- retString += curChar;
- return retString;
- };
- var string = {
- uint8ToCString: uint8ToCString$1
- };
- var uint8ToCString = string.uint8ToCString;
- var getUint64$1 = numbers.getUint64;
- /**
- * Based on: ISO/IEC 23009 Section: 5.10.3.3
- * References:
- * https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format
- * https://aomediacodec.github.io/id3-emsg/
- *
- * Takes emsg box data as a uint8 array and returns a emsg box object
- * @param {UInt8Array} boxData data from emsg box
- * @returns A parsed emsg box object
- */
-
- var parseEmsgBox = function (boxData) {
- // version + flags
- var offset = 4;
- var version = boxData[0];
- var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;
- if (version === 0) {
- scheme_id_uri = uint8ToCString(boxData.subarray(offset));
- offset += scheme_id_uri.length;
- value = uint8ToCString(boxData.subarray(offset));
- offset += value.length;
- var dv = new DataView(boxData.buffer);
- timescale = dv.getUint32(offset);
- offset += 4;
- presentation_time_delta = dv.getUint32(offset);
- offset += 4;
- event_duration = dv.getUint32(offset);
- offset += 4;
- id = dv.getUint32(offset);
- offset += 4;
- } else if (version === 1) {
- var dv = new DataView(boxData.buffer);
- timescale = dv.getUint32(offset);
- offset += 4;
- presentation_time = getUint64$1(boxData.subarray(offset));
- offset += 8;
- event_duration = dv.getUint32(offset);
- offset += 4;
- id = dv.getUint32(offset);
- offset += 4;
- scheme_id_uri = uint8ToCString(boxData.subarray(offset));
- offset += scheme_id_uri.length;
- value = uint8ToCString(boxData.subarray(offset));
- offset += value.length;
- }
- message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));
- var emsgBox = {
- scheme_id_uri,
- value,
- // if timescale is undefined or 0 set to 1
- timescale: timescale ? timescale : 1,
- presentation_time,
- presentation_time_delta,
- event_duration,
- id,
- message_data
- };
- return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;
- };
- /**
- * Scales a presentation time or time delta with an offset with a provided timescale
- * @param {number} presentationTime
- * @param {number} timescale
- * @param {number} timeDelta
- * @param {number} offset
- * @returns the scaled time as a number
- */
-
- var scaleTime = function (presentationTime, timescale, timeDelta, offset) {
- return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;
- };
- /**
- * Checks the emsg box data for validity based on the version
- * @param {number} version of the emsg box to validate
- * @param {Object} emsg the emsg data to validate
- * @returns if the box is valid as a boolean
- */
-
- var isValidEmsgBox = function (version, emsg) {
- var hasScheme = emsg.scheme_id_uri !== '\0';
- var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;
- var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1
-
- return !(version > 1) && isValidV0Box || isValidV1Box;
- }; // Utility function to check if an object is defined
-
- var isDefined = function (data) {
- return data !== undefined || data !== null;
- };
- var emsg$1 = {
- parseEmsgBox: parseEmsgBox,
- scaleTime: scaleTime
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Utilities to detect basic properties and metadata about MP4s.
- */
-
- var toUnsigned = bin.toUnsigned;
- var toHexString = bin.toHexString;
- var findBox = findBox_1;
- var parseType$1 = parseType_1;
- var emsg = emsg$1;
- var parseTfhd = parseTfhd$2;
- var parseTrun = parseTrun$2;
- var parseTfdt = parseTfdt$2;
- var getUint64 = numbers.getUint64;
- var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;
- var window$1 = window_1;
- var parseId3Frames = parseId3.parseId3Frames;
- /**
- * Parses an MP4 initialization segment and extracts the timescale
- * values for any declared tracks. Timescale values indicate the
- * number of clock ticks per second to assume for time-based values
- * elsewhere in the MP4.
- *
- * To determine the start time of an MP4, you need two pieces of
- * information: the timescale unit and the earliest base media decode
- * time. Multiple timescales can be specified within an MP4 but the
- * base media decode time is always expressed in the timescale from
- * the media header box for the track:
- * ```
- * moov > trak > mdia > mdhd.timescale
- * ```
- * @param init {Uint8Array} the bytes of the init segment
- * @return {object} a hash of track ids to timescale values or null if
- * the init segment is malformed.
- */
-
- timescale = function (init) {
- var result = {},
- traks = findBox(init, ['moov', 'trak']); // mdhd timescale
-
- return traks.reduce(function (result, trak) {
- var tkhd, version, index, id, mdhd;
- tkhd = findBox(trak, ['tkhd'])[0];
- if (!tkhd) {
- return null;
- }
- version = tkhd[0];
- index = version === 0 ? 12 : 20;
- id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);
- mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
- if (!mdhd) {
- return null;
- }
- version = mdhd[0];
- index = version === 0 ? 12 : 20;
- result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
- return result;
- }, result);
- };
- /**
- * Determine the base media decode start time, in seconds, for an MP4
- * fragment. If multiple fragments are specified, the earliest time is
- * returned.
- *
- * The base media decode time can be parsed from track fragment
- * metadata:
- * ```
- * moof > traf > tfdt.baseMediaDecodeTime
- * ```
- * It requires the timescale value from the mdhd to interpret.
- *
- * @param timescale {object} a hash of track ids to timescale values.
- * @return {number} the earliest base media decode start time for the
- * fragment, in seconds
- */
-
- startTime = function (timescale, fragment) {
- var trafs; // we need info from two childrend of each track fragment box
-
- trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track
-
- var lowestTime = trafs.reduce(function (acc, traf) {
- var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd
-
- var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified
-
- var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt
-
- var tfdt = findBox(traf, ['tfdt'])[0];
- var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);
- var baseTime; // version 1 is 64 bit
-
- if (tfdt[0] === 1) {
- baseTime = getUint64(tfdt.subarray(4, 12));
- } else {
- baseTime = dv.getUint32(4);
- } // convert base time to seconds if it is a valid number.
-
- let seconds;
- if (typeof baseTime === 'bigint') {
- seconds = baseTime / window$1.BigInt(scale);
- } else if (typeof baseTime === 'number' && !isNaN(baseTime)) {
- seconds = baseTime / scale;
- }
- if (seconds < Number.MAX_SAFE_INTEGER) {
- seconds = Number(seconds);
- }
- if (seconds < acc) {
- acc = seconds;
- }
- return acc;
- }, Infinity);
- return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;
- };
- /**
- * Determine the composition start, in seconds, for an MP4
- * fragment.
- *
- * The composition start time of a fragment can be calculated using the base
- * media decode time, composition time offset, and timescale, as follows:
- *
- * compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale
- *
- * All of the aforementioned information is contained within a media fragment's
- * `traf` box, except for timescale info, which comes from the initialization
- * segment, so a track id (also contained within a `traf`) is also necessary to
- * associate it with a timescale
- *
- *
- * @param timescales {object} - a hash of track ids to timescale values.
- * @param fragment {Unit8Array} - the bytes of a media segment
- * @return {number} the composition start time for the fragment, in seconds
- **/
-
- compositionStartTime = function (timescales, fragment) {
- var trafBoxes = findBox(fragment, ['moof', 'traf']);
- var baseMediaDecodeTime = 0;
- var compositionTimeOffset = 0;
- var trackId;
- if (trafBoxes && trafBoxes.length) {
- // The spec states that track run samples contained within a `traf` box are contiguous, but
- // it does not explicitly state whether the `traf` boxes themselves are contiguous.
- // We will assume that they are, so we only need the first to calculate start time.
- var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];
- var trun = findBox(trafBoxes[0], ['trun'])[0];
- var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];
- if (tfhd) {
- var parsedTfhd = parseTfhd(tfhd);
- trackId = parsedTfhd.trackId;
- }
- if (tfdt) {
- var parsedTfdt = parseTfdt(tfdt);
- baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;
- }
- if (trun) {
- var parsedTrun = parseTrun(trun);
- if (parsedTrun.samples && parsedTrun.samples.length) {
- compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;
- }
- }
- } // Get timescale for this specific track. Assume a 90kHz clock if no timescale was
- // specified.
-
- var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds
-
- if (typeof baseMediaDecodeTime === 'bigint') {
- compositionTimeOffset = window$1.BigInt(compositionTimeOffset);
- timescale = window$1.BigInt(timescale);
- }
- var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;
- if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {
- result = Number(result);
- }
- return result;
- };
- /**
- * Find the trackIds of the video tracks in this source.
- * Found by parsing the Handler Reference and Track Header Boxes:
- * moov > trak > mdia > hdlr
- * moov > trak > tkhd
- *
- * @param {Uint8Array} init - The bytes of the init segment for this source
- * @return {Number[]} A list of trackIds
- *
- * @see ISO-BMFF-12/2015, Section 8.4.3
- **/
-
- getVideoTrackIds = function (init) {
- var traks = findBox(init, ['moov', 'trak']);
- var videoTrackIds = [];
- traks.forEach(function (trak) {
- var hdlrs = findBox(trak, ['mdia', 'hdlr']);
- var tkhds = findBox(trak, ['tkhd']);
- hdlrs.forEach(function (hdlr, index) {
- var handlerType = parseType$1(hdlr.subarray(8, 12));
- var tkhd = tkhds[index];
- var view;
- var version;
- var trackId;
- if (handlerType === 'vide') {
- view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
- version = view.getUint8(0);
- trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);
- videoTrackIds.push(trackId);
- }
- });
- });
- return videoTrackIds;
- };
- getTimescaleFromMediaHeader = function (mdhd) {
- // mdhd is a FullBox, meaning it will have its own version as the first byte
- var version = mdhd[0];
- var index = version === 0 ? 12 : 20;
- return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
- };
- /**
- * Get all the video, audio, and hint tracks from a non fragmented
- * mp4 segment
- */
-
- getTracks = function (init) {
- var traks = findBox(init, ['moov', 'trak']);
- var tracks = [];
- traks.forEach(function (trak) {
- var track = {};
- var tkhd = findBox(trak, ['tkhd'])[0];
- var view, tkhdVersion; // id
-
- if (tkhd) {
- view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
- tkhdVersion = view.getUint8(0);
- track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);
- }
- var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type
-
- if (hdlr) {
- var type = parseType$1(hdlr.subarray(8, 12));
- if (type === 'vide') {
- track.type = 'video';
- } else if (type === 'soun') {
- track.type = 'audio';
- } else {
- track.type = type;
- }
- } // codec
-
- var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];
- if (stsd) {
- var sampleDescriptions = stsd.subarray(8); // gives the codec type string
-
- track.codec = parseType$1(sampleDescriptions.subarray(4, 8));
- var codecBox = findBox(sampleDescriptions, [track.codec])[0];
- var codecConfig, codecConfigType;
- if (codecBox) {
- // https://tools.ietf.org/html/rfc6381#section-3.3
- if (/^[asm]vc[1-9]$/i.test(track.codec)) {
- // we don't need anything but the "config" parameter of the
- // avc1 codecBox
- codecConfig = codecBox.subarray(78);
- codecConfigType = parseType$1(codecConfig.subarray(4, 8));
- if (codecConfigType === 'avcC' && codecConfig.length > 11) {
- track.codec += '.'; // left padded with zeroes for single digit hex
- // profile idc
-
- track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags
-
- track.codec += toHexString(codecConfig[10]); // level idc
-
- track.codec += toHexString(codecConfig[11]);
- } else {
- // TODO: show a warning that we couldn't parse the codec
- // and are using the default
- track.codec = 'avc1.4d400d';
- }
- } else if (/^mp4[a,v]$/i.test(track.codec)) {
- // we do not need anything but the streamDescriptor of the mp4a codecBox
- codecConfig = codecBox.subarray(28);
- codecConfigType = parseType$1(codecConfig.subarray(4, 8));
- if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {
- track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit
-
- track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');
- } else {
- // TODO: show a warning that we couldn't parse the codec
- // and are using the default
- track.codec = 'mp4a.40.2';
- }
- } else {
- // flac, opus, etc
- track.codec = track.codec.toLowerCase();
- }
- }
- }
- var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
- if (mdhd) {
- track.timescale = getTimescaleFromMediaHeader(mdhd);
- }
- tracks.push(track);
- });
- return tracks;
- };
- /**
- * Returns an array of emsg ID3 data from the provided segmentData.
- * An offset can also be provided as the Latest Arrival Time to calculate
- * the Event Start Time of v0 EMSG boxes.
- * See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
- *
- * @param {Uint8Array} segmentData the segment byte array.
- * @param {number} offset the segment start time or Latest Arrival Time,
- * @return {Object[]} an array of ID3 parsed from EMSG boxes
- */
-
- getEmsgID3 = function (segmentData, offset = 0) {
- var emsgBoxes = findBox(segmentData, ['emsg']);
- return emsgBoxes.map(data => {
- var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
- var parsedId3Frames = parseId3Frames(parsedBox.message_data);
- return {
- cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
- duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
- frames: parsedId3Frames
- };
- });
- };
- var probe$2 = {
- // export mp4 inspector's findBox and parseType for backwards compatibility
- findBox: findBox,
- parseType: parseType$1,
- timescale: timescale,
- startTime: startTime,
- compositionStartTime: compositionStartTime,
- videoTrackIds: getVideoTrackIds,
- tracks: getTracks,
- getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
- getEmsgID3: getEmsgID3
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Utilities to detect basic properties and metadata about TS Segments.
- */
-
- var StreamTypes$1 = streamTypes;
- var parsePid = function (packet) {
- var pid = packet[1] & 0x1f;
- pid <<= 8;
- pid |= packet[2];
- return pid;
- };
- var parsePayloadUnitStartIndicator = function (packet) {
- return !!(packet[1] & 0x40);
- };
- var parseAdaptionField = function (packet) {
- var offset = 0; // if an adaption field is present, its length is specified by the
- // fifth byte of the TS packet header. The adaptation field is
- // used to add stuffing to PES packets that don't fill a complete
- // TS packet, and to specify some forms of timing and control data
- // that we do not currently use.
-
- if ((packet[3] & 0x30) >>> 4 > 0x01) {
- offset += packet[4] + 1;
- }
- return offset;
- };
- var parseType = function (packet, pmtPid) {
- var pid = parsePid(packet);
- if (pid === 0) {
- return 'pat';
- } else if (pid === pmtPid) {
- return 'pmt';
- } else if (pmtPid) {
- return 'pes';
- }
- return null;
- };
- var parsePat = function (packet) {
- var pusi = parsePayloadUnitStartIndicator(packet);
- var offset = 4 + parseAdaptionField(packet);
- if (pusi) {
- offset += packet[offset] + 1;
- }
- return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];
- };
- var parsePmt = function (packet) {
- var programMapTable = {};
- var pusi = parsePayloadUnitStartIndicator(packet);
- var payloadOffset = 4 + parseAdaptionField(packet);
- if (pusi) {
- payloadOffset += packet[payloadOffset] + 1;
- } // PMTs can be sent ahead of the time when they should actually
- // take effect. We don't believe this should ever be the case
- // for HLS but we'll ignore "forward" PMT declarations if we see
- // them. Future PMT declarations have the current_next_indicator
- // set to zero.
-
- if (!(packet[payloadOffset + 5] & 0x01)) {
- return;
- }
- var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section
-
- sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];
- tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how
- // long the program info descriptors are
-
- programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table
-
- var offset = 12 + programInfoLength;
- while (offset < tableEnd) {
- var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type
-
- programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry
- // skip past the elementary stream descriptors, if present
-
- offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;
- }
- return programMapTable;
- };
- var parsePesType = function (packet, programMapTable) {
- var pid = parsePid(packet);
- var type = programMapTable[pid];
- switch (type) {
- case StreamTypes$1.H264_STREAM_TYPE:
- return 'video';
- case StreamTypes$1.ADTS_STREAM_TYPE:
- return 'audio';
- case StreamTypes$1.METADATA_STREAM_TYPE:
- return 'timed-metadata';
- default:
- return null;
- }
- };
- var parsePesTime = function (packet) {
- var pusi = parsePayloadUnitStartIndicator(packet);
- if (!pusi) {
- return null;
- }
- var offset = 4 + parseAdaptionField(packet);
- if (offset >= packet.byteLength) {
- // From the H 222.0 MPEG-TS spec
- // "For transport stream packets carrying PES packets, stuffing is needed when there
- // is insufficient PES packet data to completely fill the transport stream packet
- // payload bytes. Stuffing is accomplished by defining an adaptation field longer than
- // the sum of the lengths of the data elements in it, so that the payload bytes
- // remaining after the adaptation field exactly accommodates the available PES packet
- // data."
- //
- // If the offset is >= the length of the packet, then the packet contains no data
- // and instead is just adaption field stuffing bytes
- return null;
- }
- var pes = null;
- var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value
- // and a DTS value. Determine what combination of values is
- // available to work with.
-
- ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number. Javascript
- // performs all bitwise operations on 32-bit integers but javascript
- // supports a much greater range (52-bits) of integer using standard
- // mathematical operations.
- // We construct a 31-bit value using bitwise operators over the 31
- // most significant bits and then multiply by 4 (equal to a left-shift
- // of 2) before we add the final 2 least significant bits of the
- // timestamp (equal to an OR.)
-
- if (ptsDtsFlags & 0xC0) {
- pes = {}; // the PTS and DTS are not written out directly. For information
- // on how they are encoded, see
- // http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
-
- pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;
- pes.pts *= 4; // Left shift by 2
-
- pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs
-
- pes.dts = pes.pts;
- if (ptsDtsFlags & 0x40) {
- pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;
- pes.dts *= 4; // Left shift by 2
-
- pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs
- }
- }
-
- return pes;
- };
- var parseNalUnitType = function (type) {
- switch (type) {
- case 0x05:
- return 'slice_layer_without_partitioning_rbsp_idr';
- case 0x06:
- return 'sei_rbsp';
- case 0x07:
- return 'seq_parameter_set_rbsp';
- case 0x08:
- return 'pic_parameter_set_rbsp';
- case 0x09:
- return 'access_unit_delimiter_rbsp';
- default:
- return null;
- }
- };
- var videoPacketContainsKeyFrame = function (packet) {
- var offset = 4 + parseAdaptionField(packet);
- var frameBuffer = packet.subarray(offset);
- var frameI = 0;
- var frameSyncPoint = 0;
- var foundKeyFrame = false;
- var nalType; // advance the sync point to a NAL start, if necessary
-
- for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {
- if (frameBuffer[frameSyncPoint + 2] === 1) {
- // the sync point is properly aligned
- frameI = frameSyncPoint + 5;
- break;
- }
- }
- while (frameI < frameBuffer.byteLength) {
- // look at the current byte to determine if we've hit the end of
- // a NAL unit boundary
- switch (frameBuffer[frameI]) {
- case 0:
- // skip past non-sync sequences
- if (frameBuffer[frameI - 1] !== 0) {
- frameI += 2;
- break;
- } else if (frameBuffer[frameI - 2] !== 0) {
- frameI++;
- break;
- }
- if (frameSyncPoint + 3 !== frameI - 2) {
- nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
- if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
- foundKeyFrame = true;
- }
- } // drop trailing zeroes
-
- do {
- frameI++;
- } while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);
- frameSyncPoint = frameI - 2;
- frameI += 3;
- break;
- case 1:
- // skip past non-sync sequences
- if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {
- frameI += 3;
- break;
- }
- nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
- if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
- foundKeyFrame = true;
- }
- frameSyncPoint = frameI - 2;
- frameI += 3;
- break;
- default:
- // the current byte isn't a one or zero, so it cannot be part
- // of a sync sequence
- frameI += 3;
- break;
- }
- }
- frameBuffer = frameBuffer.subarray(frameSyncPoint);
- frameI -= frameSyncPoint;
- frameSyncPoint = 0; // parse the final nal
-
- if (frameBuffer && frameBuffer.byteLength > 3) {
- nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
- if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
- foundKeyFrame = true;
- }
- }
- return foundKeyFrame;
- };
- var probe$1 = {
- parseType: parseType,
- parsePat: parsePat,
- parsePmt: parsePmt,
- parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,
- parsePesType: parsePesType,
- parsePesTime: parsePesTime,
- videoPacketContainsKeyFrame: videoPacketContainsKeyFrame
- };
- /**
- * mux.js
- *
- * Copyright (c) Brightcove
- * Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
- *
- * Parse mpeg2 transport stream packets to extract basic timing information
- */
-
- var StreamTypes = streamTypes;
- var handleRollover = timestampRolloverStream.handleRollover;
- var probe = {};
- probe.ts = probe$1;
- probe.aac = utils;
- var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;
- var MP2T_PACKET_LENGTH = 188,
- // bytes
- SYNC_BYTE = 0x47;
- /**
- * walks through segment data looking for pat and pmt packets to parse out
- * program map table information
- */
-
- var parsePsi_ = function (bytes, pmt) {
- var startIndex = 0,
- endIndex = MP2T_PACKET_LENGTH,
- packet,
- type;
- while (endIndex < bytes.byteLength) {
- // Look for a pair of start and end sync bytes in the data..
- if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
- // We found a packet
- packet = bytes.subarray(startIndex, endIndex);
- type = probe.ts.parseType(packet, pmt.pid);
- switch (type) {
- case 'pat':
- pmt.pid = probe.ts.parsePat(packet);
- break;
- case 'pmt':
- var table = probe.ts.parsePmt(packet);
- pmt.table = pmt.table || {};
- Object.keys(table).forEach(function (key) {
- pmt.table[key] = table[key];
- });
- break;
- }
- startIndex += MP2T_PACKET_LENGTH;
- endIndex += MP2T_PACKET_LENGTH;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex++;
- endIndex++;
- }
- };
- /**
- * walks through the segment data from the start and end to get timing information
- * for the first and last audio pes packets
- */
-
- var parseAudioPes_ = function (bytes, pmt, result) {
- var startIndex = 0,
- endIndex = MP2T_PACKET_LENGTH,
- packet,
- type,
- pesType,
- pusi,
- parsed;
- var endLoop = false; // Start walking from start of segment to get first audio packet
-
- while (endIndex <= bytes.byteLength) {
- // Look for a pair of start and end sync bytes in the data..
- if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
- // We found a packet
- packet = bytes.subarray(startIndex, endIndex);
- type = probe.ts.parseType(packet, pmt.pid);
- switch (type) {
- case 'pes':
- pesType = probe.ts.parsePesType(packet, pmt.table);
- pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
- if (pesType === 'audio' && pusi) {
- parsed = probe.ts.parsePesTime(packet);
- if (parsed) {
- parsed.type = 'audio';
- result.audio.push(parsed);
- endLoop = true;
- }
- }
- break;
- }
- if (endLoop) {
- break;
- }
- startIndex += MP2T_PACKET_LENGTH;
- endIndex += MP2T_PACKET_LENGTH;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex++;
- endIndex++;
- } // Start walking from end of segment to get last audio packet
-
- endIndex = bytes.byteLength;
- startIndex = endIndex - MP2T_PACKET_LENGTH;
- endLoop = false;
- while (startIndex >= 0) {
- // Look for a pair of start and end sync bytes in the data..
- if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
- // We found a packet
- packet = bytes.subarray(startIndex, endIndex);
- type = probe.ts.parseType(packet, pmt.pid);
- switch (type) {
- case 'pes':
- pesType = probe.ts.parsePesType(packet, pmt.table);
- pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
- if (pesType === 'audio' && pusi) {
- parsed = probe.ts.parsePesTime(packet);
- if (parsed) {
- parsed.type = 'audio';
- result.audio.push(parsed);
- endLoop = true;
- }
- }
- break;
- }
- if (endLoop) {
- break;
- }
- startIndex -= MP2T_PACKET_LENGTH;
- endIndex -= MP2T_PACKET_LENGTH;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex--;
- endIndex--;
- }
- };
- /**
- * walks through the segment data from the start and end to get timing information
- * for the first and last video pes packets as well as timing information for the first
- * key frame.
- */
-
- var parseVideoPes_ = function (bytes, pmt, result) {
- var startIndex = 0,
- endIndex = MP2T_PACKET_LENGTH,
- packet,
- type,
- pesType,
- pusi,
- parsed,
- frame,
- i,
- pes;
- var endLoop = false;
- var currentFrame = {
- data: [],
- size: 0
- }; // Start walking from start of segment to get first video packet
-
- while (endIndex < bytes.byteLength) {
- // Look for a pair of start and end sync bytes in the data..
- if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
- // We found a packet
- packet = bytes.subarray(startIndex, endIndex);
- type = probe.ts.parseType(packet, pmt.pid);
- switch (type) {
- case 'pes':
- pesType = probe.ts.parsePesType(packet, pmt.table);
- pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
- if (pesType === 'video') {
- if (pusi && !endLoop) {
- parsed = probe.ts.parsePesTime(packet);
- if (parsed) {
- parsed.type = 'video';
- result.video.push(parsed);
- endLoop = true;
- }
- }
- if (!result.firstKeyFrame) {
- if (pusi) {
- if (currentFrame.size !== 0) {
- frame = new Uint8Array(currentFrame.size);
- i = 0;
- while (currentFrame.data.length) {
- pes = currentFrame.data.shift();
- frame.set(pes, i);
- i += pes.byteLength;
- }
- if (probe.ts.videoPacketContainsKeyFrame(frame)) {
- var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting
- // the keyframe seems to work fine with HLS playback
- // and definitely preferable to a crash with TypeError...
-
- if (firstKeyFrame) {
- result.firstKeyFrame = firstKeyFrame;
- result.firstKeyFrame.type = 'video';
- } else {
- // eslint-disable-next-line
- console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');
- }
- }
- currentFrame.size = 0;
- }
- }
- currentFrame.data.push(packet);
- currentFrame.size += packet.byteLength;
- }
- }
- break;
- }
- if (endLoop && result.firstKeyFrame) {
- break;
- }
- startIndex += MP2T_PACKET_LENGTH;
- endIndex += MP2T_PACKET_LENGTH;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex++;
- endIndex++;
- } // Start walking from end of segment to get last video packet
-
- endIndex = bytes.byteLength;
- startIndex = endIndex - MP2T_PACKET_LENGTH;
- endLoop = false;
- while (startIndex >= 0) {
- // Look for a pair of start and end sync bytes in the data..
- if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
- // We found a packet
- packet = bytes.subarray(startIndex, endIndex);
- type = probe.ts.parseType(packet, pmt.pid);
- switch (type) {
- case 'pes':
- pesType = probe.ts.parsePesType(packet, pmt.table);
- pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
- if (pesType === 'video' && pusi) {
- parsed = probe.ts.parsePesTime(packet);
- if (parsed) {
- parsed.type = 'video';
- result.video.push(parsed);
- endLoop = true;
- }
- }
- break;
- }
- if (endLoop) {
- break;
- }
- startIndex -= MP2T_PACKET_LENGTH;
- endIndex -= MP2T_PACKET_LENGTH;
- continue;
- } // If we get here, we have somehow become de-synchronized and we need to step
- // forward one byte at a time until we find a pair of sync bytes that denote
- // a packet
-
- startIndex--;
- endIndex--;
- }
- };
- /**
- * Adjusts the timestamp information for the segment to account for
- * rollover and convert to seconds based on pes packet timescale (90khz clock)
- */
-
- var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {
- if (segmentInfo.audio && segmentInfo.audio.length) {
- var audioBaseTimestamp = baseTimestamp;
- if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {
- audioBaseTimestamp = segmentInfo.audio[0].dts;
- }
- segmentInfo.audio.forEach(function (info) {
- info.dts = handleRollover(info.dts, audioBaseTimestamp);
- info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds
-
- info.dtsTime = info.dts / ONE_SECOND_IN_TS;
- info.ptsTime = info.pts / ONE_SECOND_IN_TS;
- });
- }
- if (segmentInfo.video && segmentInfo.video.length) {
- var videoBaseTimestamp = baseTimestamp;
- if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {
- videoBaseTimestamp = segmentInfo.video[0].dts;
- }
- segmentInfo.video.forEach(function (info) {
- info.dts = handleRollover(info.dts, videoBaseTimestamp);
- info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds
-
- info.dtsTime = info.dts / ONE_SECOND_IN_TS;
- info.ptsTime = info.pts / ONE_SECOND_IN_TS;
- });
- if (segmentInfo.firstKeyFrame) {
- var frame = segmentInfo.firstKeyFrame;
- frame.dts = handleRollover(frame.dts, videoBaseTimestamp);
- frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds
-
- frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;
- frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;
- }
- }
- };
- /**
- * inspects the aac data stream for start and end time information
- */
-
- var inspectAac_ = function (bytes) {
- var endLoop = false,
- audioCount = 0,
- sampleRate = null,
- timestamp = null,
- frameSize = 0,
- byteIndex = 0,
- packet;
- while (bytes.length - byteIndex >= 3) {
- var type = probe.aac.parseType(bytes, byteIndex);
- switch (type) {
- case 'timed-metadata':
- // Exit early because we don't have enough to parse
- // the ID3 tag header
- if (bytes.length - byteIndex < 10) {
- endLoop = true;
- break;
- }
- frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
- // to emit a full packet
-
- if (frameSize > bytes.length) {
- endLoop = true;
- break;
- }
- if (timestamp === null) {
- packet = bytes.subarray(byteIndex, byteIndex + frameSize);
- timestamp = probe.aac.parseAacTimestamp(packet);
- }
- byteIndex += frameSize;
- break;
- case 'audio':
- // Exit early because we don't have enough to parse
- // the ADTS frame header
- if (bytes.length - byteIndex < 7) {
- endLoop = true;
- break;
- }
- frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
- // to emit a full packet
-
- if (frameSize > bytes.length) {
- endLoop = true;
- break;
- }
- if (sampleRate === null) {
- packet = bytes.subarray(byteIndex, byteIndex + frameSize);
- sampleRate = probe.aac.parseSampleRate(packet);
- }
- audioCount++;
- byteIndex += frameSize;
- break;
- default:
- byteIndex++;
- break;
- }
- if (endLoop) {
- return null;
- }
- }
- if (sampleRate === null || timestamp === null) {
- return null;
- }
- var audioTimescale = ONE_SECOND_IN_TS / sampleRate;
- var result = {
- audio: [{
- type: 'audio',
- dts: timestamp,
- pts: timestamp
- }, {
- type: 'audio',
- dts: timestamp + audioCount * 1024 * audioTimescale,
- pts: timestamp + audioCount * 1024 * audioTimescale
- }]
- };
- return result;
- };
- /**
- * inspects the transport stream segment data for start and end time information
- * of the audio and video tracks (when present) as well as the first key frame's
- * start time.
- */
-
- var inspectTs_ = function (bytes) {
- var pmt = {
- pid: null,
- table: null
- };
- var result = {};
- parsePsi_(bytes, pmt);
- for (var pid in pmt.table) {
- if (pmt.table.hasOwnProperty(pid)) {
- var type = pmt.table[pid];
- switch (type) {
- case StreamTypes.H264_STREAM_TYPE:
- result.video = [];
- parseVideoPes_(bytes, pmt, result);
- if (result.video.length === 0) {
- delete result.video;
- }
- break;
- case StreamTypes.ADTS_STREAM_TYPE:
- result.audio = [];
- parseAudioPes_(bytes, pmt, result);
- if (result.audio.length === 0) {
- delete result.audio;
- }
- break;
- }
- }
- }
- return result;
- };
- /**
- * Inspects segment byte data and returns an object with start and end timing information
- *
- * @param {Uint8Array} bytes The segment byte data
- * @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame
- * timestamps for rollover. This value must be in 90khz clock.
- * @return {Object} Object containing start and end frame timing info of segment.
- */
-
- var inspect = function (bytes, baseTimestamp) {
- var isAacData = probe.aac.isLikelyAacData(bytes);
- var result;
- if (isAacData) {
- result = inspectAac_(bytes);
- } else {
- result = inspectTs_(bytes);
- }
- if (!result || !result.audio && !result.video) {
- return null;
- }
- adjustTimestamp_(result, baseTimestamp);
- return result;
- };
- var tsInspector = {
- inspect: inspect,
- parseAudioPes_: parseAudioPes_
- };
- /* global self */
-
- /**
- * Re-emits transmuxer events by converting them into messages to the
- * world outside the worker.
- *
- * @param {Object} transmuxer the transmuxer to wire events on
- * @private
- */
-
- const wireTransmuxerEvents = function (self, transmuxer) {
- transmuxer.on('data', function (segment) {
- // transfer ownership of the underlying ArrayBuffer
- // instead of doing a copy to save memory
- // ArrayBuffers are transferable but generic TypedArrays are not
- // @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)
- const initArray = segment.initSegment;
- segment.initSegment = {
- data: initArray.buffer,
- byteOffset: initArray.byteOffset,
- byteLength: initArray.byteLength
- };
- const typedArray = segment.data;
- segment.data = typedArray.buffer;
- self.postMessage({
- action: 'data',
- segment,
- byteOffset: typedArray.byteOffset,
- byteLength: typedArray.byteLength
- }, [segment.data]);
- });
- transmuxer.on('done', function (data) {
- self.postMessage({
- action: 'done'
- });
- });
- transmuxer.on('gopInfo', function (gopInfo) {
- self.postMessage({
- action: 'gopInfo',
- gopInfo
- });
- });
- transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {
- const videoSegmentTimingInfo = {
- start: {
- decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
- presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
- },
- end: {
- decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
- presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
- },
- baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
- };
- if (timingInfo.prependedContentDuration) {
- videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
- }
- self.postMessage({
- action: 'videoSegmentTimingInfo',
- videoSegmentTimingInfo
- });
- });
- transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {
- // Note that all times for [audio/video]SegmentTimingInfo events are in video clock
- const audioSegmentTimingInfo = {
- start: {
- decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
- presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
- },
- end: {
- decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
- presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
- },
- baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
- };
- if (timingInfo.prependedContentDuration) {
- audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
- }
- self.postMessage({
- action: 'audioSegmentTimingInfo',
- audioSegmentTimingInfo
- });
- });
- transmuxer.on('id3Frame', function (id3Frame) {
- self.postMessage({
- action: 'id3Frame',
- id3Frame
- });
- });
- transmuxer.on('caption', function (caption) {
- self.postMessage({
- action: 'caption',
- caption
- });
- });
- transmuxer.on('trackinfo', function (trackInfo) {
- self.postMessage({
- action: 'trackinfo',
- trackInfo
- });
- });
- transmuxer.on('audioTimingInfo', function (audioTimingInfo) {
- // convert to video TS since we prioritize video time over audio
- self.postMessage({
- action: 'audioTimingInfo',
- audioTimingInfo: {
- start: clock$2.videoTsToSeconds(audioTimingInfo.start),
- end: clock$2.videoTsToSeconds(audioTimingInfo.end)
- }
- });
- });
- transmuxer.on('videoTimingInfo', function (videoTimingInfo) {
- self.postMessage({
- action: 'videoTimingInfo',
- videoTimingInfo: {
- start: clock$2.videoTsToSeconds(videoTimingInfo.start),
- end: clock$2.videoTsToSeconds(videoTimingInfo.end)
- }
- });
- });
- transmuxer.on('log', function (log) {
- self.postMessage({
- action: 'log',
- log
- });
- });
- };
- /**
- * All incoming messages route through this hash. If no function exists
- * to handle an incoming message, then we ignore the message.
- *
- * @class MessageHandlers
- * @param {Object} options the options to initialize with
- */
-
- class MessageHandlers {
- constructor(self, options) {
- this.options = options || {};
- this.self = self;
- this.init();
- }
- /**
- * initialize our web worker and wire all the events.
- */
-
- init() {
- if (this.transmuxer) {
- this.transmuxer.dispose();
- }
- this.transmuxer = new transmuxer.Transmuxer(this.options);
- wireTransmuxerEvents(this.self, this.transmuxer);
- }
- pushMp4Captions(data) {
- if (!this.captionParser) {
- this.captionParser = new captionParser();
- this.captionParser.init();
- }
- const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
- const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);
- this.self.postMessage({
- action: 'mp4Captions',
- captions: parsed && parsed.captions || [],
- logs: parsed && parsed.logs || [],
- data: segment.buffer
- }, [segment.buffer]);
- }
- probeMp4StartTime({
- timescales,
- data
- }) {
- const startTime = probe$2.startTime(timescales, data);
- this.self.postMessage({
- action: 'probeMp4StartTime',
- startTime,
- data
- }, [data.buffer]);
- }
- probeMp4Tracks({
- data
- }) {
- const tracks = probe$2.tracks(data);
- this.self.postMessage({
- action: 'probeMp4Tracks',
- tracks,
- data
- }, [data.buffer]);
- }
- /**
- * Probes an mp4 segment for EMSG boxes containing ID3 data.
- * https://aomediacodec.github.io/id3-emsg/
- *
- * @param {Uint8Array} data segment data
- * @param {number} offset segment start time
- * @return {Object[]} an array of ID3 frames
- */
-
- probeEmsgID3({
- data,
- offset
- }) {
- const id3Frames = probe$2.getEmsgID3(data, offset);
- this.self.postMessage({
- action: 'probeEmsgID3',
- id3Frames,
- emsgData: data
- }, [data.buffer]);
- }
- /**
- * Probe an mpeg2-ts segment to determine the start time of the segment in it's
- * internal "media time," as well as whether it contains video and/or audio.
- *
- * @private
- * @param {Uint8Array} bytes - segment bytes
- * @param {number} baseStartTime
- * Relative reference timestamp used when adjusting frame timestamps for rollover.
- * This value should be in seconds, as it's converted to a 90khz clock within the
- * function body.
- * @return {Object} The start time of the current segment in "media time" as well as
- * whether it contains video and/or audio
- */
-
- probeTs({
- data,
- baseStartTime
- }) {
- const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;
- const timeInfo = tsInspector.inspect(data, tsStartTime);
- let result = null;
- if (timeInfo) {
- result = {
- // each type's time info comes back as an array of 2 times, start and end
- hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,
- hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false
- };
- if (result.hasVideo) {
- result.videoStart = timeInfo.video[0].ptsTime;
- }
- if (result.hasAudio) {
- result.audioStart = timeInfo.audio[0].ptsTime;
- }
- }
- this.self.postMessage({
- action: 'probeTs',
- result,
- data
- }, [data.buffer]);
- }
- clearAllMp4Captions() {
- if (this.captionParser) {
- this.captionParser.clearAllCaptions();
- }
- }
- clearParsedMp4Captions() {
- if (this.captionParser) {
- this.captionParser.clearParsedCaptions();
- }
- }
- /**
- * Adds data (a ts segment) to the start of the transmuxer pipeline for
- * processing.
- *
- * @param {ArrayBuffer} data data to push into the muxer
- */
-
- push(data) {
- // Cast array buffer to correct type for transmuxer
- const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
- this.transmuxer.push(segment);
- }
- /**
- * Recreate the transmuxer so that the next segment added via `push`
- * start with a fresh transmuxer.
- */
-
- reset() {
- this.transmuxer.reset();
- }
- /**
- * Set the value that will be used as the `baseMediaDecodeTime` time for the
- * next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`
- * set relative to the first based on the PTS values.
- *
- * @param {Object} data used to set the timestamp offset in the muxer
- */
-
- setTimestampOffset(data) {
- const timestampOffset = data.timestampOffset || 0;
- this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));
- }
- setAudioAppendStart(data) {
- this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));
- }
- setRemux(data) {
- this.transmuxer.setRemux(data.remux);
- }
- /**
- * Forces the pipeline to finish processing the last segment and emit it's
- * results.
- *
- * @param {Object} data event data, not really used
- */
-
- flush(data) {
- this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed
-
- self.postMessage({
- action: 'done',
- type: 'transmuxed'
- });
- }
- endTimeline() {
- this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their
- // timelines
-
- self.postMessage({
- action: 'endedtimeline',
- type: 'transmuxed'
- });
- }
- alignGopsWith(data) {
- this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());
- }
- }
- /**
- * Our web worker interface so that things can talk to mux.js
- * that will be running in a web worker. the scope is passed to this by
- * webworkify.
- *
- * @param {Object} self the scope for the web worker
- */
-
- self.onmessage = function (event) {
- if (event.data.action === 'init' && event.data.options) {
- this.messageHandlers = new MessageHandlers(self, event.data.options);
- return;
- }
- if (!this.messageHandlers) {
- this.messageHandlers = new MessageHandlers(self);
- }
- if (event.data && event.data.action && event.data.action !== 'init') {
- if (this.messageHandlers[event.data.action]) {
- this.messageHandlers[event.data.action](event.data);
- }
- }
- };
- }));
- var TransmuxWorker = factory(workerCode$1);
- /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
-
- const handleData_ = (event, transmuxedData, callback) => {
- const {
- type,
- initSegment,
- captions,
- captionStreams,
- metadata,
- videoFrameDtsTime,
- videoFramePtsTime
- } = event.data.segment;
- transmuxedData.buffer.push({
- captions,
- captionStreams,
- metadata
- });
- const boxes = event.data.segment.boxes || {
- data: event.data.segment.data
- };
- const result = {
- type,
- // cast ArrayBuffer to TypedArray
- data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),
- initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)
- };
- if (typeof videoFrameDtsTime !== 'undefined') {
- result.videoFrameDtsTime = videoFrameDtsTime;
- }
- if (typeof videoFramePtsTime !== 'undefined') {
- result.videoFramePtsTime = videoFramePtsTime;
- }
- callback(result);
- };
- const handleDone_ = ({
- transmuxedData,
- callback
- }) => {
- // Previously we only returned data on data events,
- // not on done events. Clear out the buffer to keep that consistent.
- transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we
- // have received
-
- callback(transmuxedData);
- };
- const handleGopInfo_ = (event, transmuxedData) => {
- transmuxedData.gopInfo = event.data.gopInfo;
- };
- const processTransmux = options => {
- const {
- transmuxer,
- bytes,
- audioAppendStart,
- gopsToAlignWith,
- remux,
- onData,
- onTrackInfo,
- onAudioTimingInfo,
- onVideoTimingInfo,
- onVideoSegmentTimingInfo,
- onAudioSegmentTimingInfo,
- onId3,
- onCaptions,
- onDone,
- onEndedTimeline,
- onTransmuxerLog,
- isEndOfTimeline
- } = options;
- const transmuxedData = {
- buffer: []
- };
- let waitForEndedTimelineEvent = isEndOfTimeline;
- const handleMessage = event => {
- if (transmuxer.currentTransmux !== options) {
- // disposed
- return;
- }
- if (event.data.action === 'data') {
- handleData_(event, transmuxedData, onData);
- }
- if (event.data.action === 'trackinfo') {
- onTrackInfo(event.data.trackInfo);
- }
- if (event.data.action === 'gopInfo') {
- handleGopInfo_(event, transmuxedData);
- }
- if (event.data.action === 'audioTimingInfo') {
- onAudioTimingInfo(event.data.audioTimingInfo);
- }
- if (event.data.action === 'videoTimingInfo') {
- onVideoTimingInfo(event.data.videoTimingInfo);
- }
- if (event.data.action === 'videoSegmentTimingInfo') {
- onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);
- }
- if (event.data.action === 'audioSegmentTimingInfo') {
- onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);
- }
- if (event.data.action === 'id3Frame') {
- onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);
- }
- if (event.data.action === 'caption') {
- onCaptions(event.data.caption);
- }
- if (event.data.action === 'endedtimeline') {
- waitForEndedTimelineEvent = false;
- onEndedTimeline();
- }
- if (event.data.action === 'log') {
- onTransmuxerLog(event.data.log);
- } // wait for the transmuxed event since we may have audio and video
-
- if (event.data.type !== 'transmuxed') {
- return;
- } // If the "endedtimeline" event has not yet fired, and this segment represents the end
- // of a timeline, that means there may still be data events before the segment
- // processing can be considerred complete. In that case, the final event should be
- // an "endedtimeline" event with the type "transmuxed."
-
- if (waitForEndedTimelineEvent) {
- return;
- }
- transmuxer.onmessage = null;
- handleDone_({
- transmuxedData,
- callback: onDone
- });
- /* eslint-disable no-use-before-define */
-
- dequeue(transmuxer);
- /* eslint-enable */
- };
-
- transmuxer.onmessage = handleMessage;
- if (audioAppendStart) {
- transmuxer.postMessage({
- action: 'setAudioAppendStart',
- appendStart: audioAppendStart
- });
- } // allow empty arrays to be passed to clear out GOPs
-
- if (Array.isArray(gopsToAlignWith)) {
- transmuxer.postMessage({
- action: 'alignGopsWith',
- gopsToAlignWith
- });
- }
- if (typeof remux !== 'undefined') {
- transmuxer.postMessage({
- action: 'setRemux',
- remux
- });
- }
- if (bytes.byteLength) {
- const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;
- const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;
- transmuxer.postMessage({
- action: 'push',
- // Send the typed-array of data as an ArrayBuffer so that
- // it can be sent as a "Transferable" and avoid the costly
- // memory copy
- data: buffer,
- // To recreate the original typed-array, we need information
- // about what portion of the ArrayBuffer it was a view into
- byteOffset,
- byteLength: bytes.byteLength
- }, [buffer]);
- }
- if (isEndOfTimeline) {
- transmuxer.postMessage({
- action: 'endTimeline'
- });
- } // even if we didn't push any bytes, we have to make sure we flush in case we reached
- // the end of the segment
-
- transmuxer.postMessage({
- action: 'flush'
- });
- };
- const dequeue = transmuxer => {
- transmuxer.currentTransmux = null;
- if (transmuxer.transmuxQueue.length) {
- transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();
- if (typeof transmuxer.currentTransmux === 'function') {
- transmuxer.currentTransmux();
- } else {
- processTransmux(transmuxer.currentTransmux);
- }
- }
- };
- const processAction = (transmuxer, action) => {
- transmuxer.postMessage({
- action
- });
- dequeue(transmuxer);
- };
- const enqueueAction = (action, transmuxer) => {
- if (!transmuxer.currentTransmux) {
- transmuxer.currentTransmux = action;
- processAction(transmuxer, action);
- return;
- }
- transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));
- };
- const reset = transmuxer => {
- enqueueAction('reset', transmuxer);
- };
- const endTimeline = transmuxer => {
- enqueueAction('endTimeline', transmuxer);
- };
- const transmux = options => {
- if (!options.transmuxer.currentTransmux) {
- options.transmuxer.currentTransmux = options;
- processTransmux(options);
- return;
- }
- options.transmuxer.transmuxQueue.push(options);
- };
- const createTransmuxer = options => {
- const transmuxer = new TransmuxWorker();
- transmuxer.currentTransmux = null;
- transmuxer.transmuxQueue = [];
- const term = transmuxer.terminate;
- transmuxer.terminate = () => {
- transmuxer.currentTransmux = null;
- transmuxer.transmuxQueue.length = 0;
- return term.call(transmuxer);
- };
- transmuxer.postMessage({
- action: 'init',
- options
- });
- return transmuxer;
- };
- var segmentTransmuxer = {
- reset,
- endTimeline,
- transmux,
- createTransmuxer
- };
- const workerCallback = function (options) {
- const transmuxer = options.transmuxer;
- const endAction = options.endAction || options.action;
- const callback = options.callback;
- const message = _extends$1({}, options, {
- endAction: null,
- transmuxer: null,
- callback: null
- });
- const listenForEndEvent = event => {
- if (event.data.action !== endAction) {
- return;
- }
- transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.
-
- if (event.data.data) {
- event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);
- if (options.data) {
- options.data = event.data.data;
- }
- }
- callback(event.data);
- };
- transmuxer.addEventListener('message', listenForEndEvent);
- if (options.data) {
- const isArrayBuffer = options.data instanceof ArrayBuffer;
- message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;
- message.byteLength = options.data.byteLength;
- const transfers = [isArrayBuffer ? options.data : options.data.buffer];
- transmuxer.postMessage(message, transfers);
- } else {
- transmuxer.postMessage(message);
- }
- };
- const REQUEST_ERRORS = {
- FAILURE: 2,
- TIMEOUT: -101,
- ABORTED: -102
- };
- /**
- * Abort all requests
- *
- * @param {Object} activeXhrs - an object that tracks all XHR requests
- */
-
- const abortAll = activeXhrs => {
- activeXhrs.forEach(xhr => {
- xhr.abort();
- });
- };
- /**
- * Gather important bandwidth stats once a request has completed
- *
- * @param {Object} request - the XHR request from which to gather stats
- */
-
- const getRequestStats = request => {
- return {
- bandwidth: request.bandwidth,
- bytesReceived: request.bytesReceived || 0,
- roundTripTime: request.roundTripTime || 0
- };
- };
- /**
- * If possible gather bandwidth stats as a request is in
- * progress
- *
- * @param {Event} progressEvent - an event object from an XHR's progress event
- */
-
- const getProgressStats = progressEvent => {
- const request = progressEvent.target;
- const roundTripTime = Date.now() - request.requestTime;
- const stats = {
- bandwidth: Infinity,
- bytesReceived: 0,
- roundTripTime: roundTripTime || 0
- };
- stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok
- // because we should only use bandwidth stats on progress to determine when
- // abort a request early due to insufficient bandwidth
-
- stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);
- return stats;
- };
- /**
- * Handle all error conditions in one place and return an object
- * with all the information
- *
- * @param {Error|null} error - if non-null signals an error occured with the XHR
- * @param {Object} request - the XHR request that possibly generated the error
- */
-
- const handleErrors = (error, request) => {
- if (request.timedout) {
- return {
- status: request.status,
- message: 'HLS request timed-out at URL: ' + request.uri,
- code: REQUEST_ERRORS.TIMEOUT,
- xhr: request
- };
- }
- if (request.aborted) {
- return {
- status: request.status,
- message: 'HLS request aborted at URL: ' + request.uri,
- code: REQUEST_ERRORS.ABORTED,
- xhr: request
- };
- }
- if (error) {
- return {
- status: request.status,
- message: 'HLS request errored at URL: ' + request.uri,
- code: REQUEST_ERRORS.FAILURE,
- xhr: request
- };
- }
- if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {
- return {
- status: request.status,
- message: 'Empty HLS response at URL: ' + request.uri,
- code: REQUEST_ERRORS.FAILURE,
- xhr: request
- };
- }
- return null;
- };
- /**
- * Handle responses for key data and convert the key data to the correct format
- * for the decryption step later
- *
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Array} objects - objects to add the key bytes to.
- * @param {Function} finishProcessingFn - a callback to execute to continue processing
- * this request
- */
-
- const handleKeyResponse = (segment, objects, finishProcessingFn) => (error, request) => {
- const response = request.response;
- const errorObj = handleErrors(error, request);
- if (errorObj) {
- return finishProcessingFn(errorObj, segment);
- }
- if (response.byteLength !== 16) {
- return finishProcessingFn({
- status: request.status,
- message: 'Invalid HLS key at URL: ' + request.uri,
- code: REQUEST_ERRORS.FAILURE,
- xhr: request
- }, segment);
- }
- const view = new DataView(response);
- const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);
- for (let i = 0; i < objects.length; i++) {
- objects[i].bytes = bytes;
- }
- return finishProcessingFn(null, segment);
- };
- const parseInitSegment = (segment, callback) => {
- const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we
- // only know how to parse mp4 init segments at the moment
-
- if (type !== 'mp4') {
- const uri = segment.map.resolvedUri || segment.map.uri;
- const mediaType = type || 'unknown';
- return callback({
- internal: true,
- message: `Found unsupported ${mediaType} container for initialization segment at URL: ${uri}`,
- code: REQUEST_ERRORS.FAILURE,
- metadata: {
- errorType: videojs.Error.UnsupportedMediaInitialization,
- mediaType
- }
- });
- }
- workerCallback({
- action: 'probeMp4Tracks',
- data: segment.map.bytes,
- transmuxer: segment.transmuxer,
- callback: ({
- tracks,
- data
- }) => {
- // transfer bytes back to us
- segment.map.bytes = data;
- tracks.forEach(function (track) {
- segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now
-
- if (segment.map.tracks[track.type]) {
- return;
- }
- segment.map.tracks[track.type] = track;
- if (typeof track.id === 'number' && track.timescale) {
- segment.map.timescales = segment.map.timescales || {};
- segment.map.timescales[track.id] = track.timescale;
- }
- });
- return callback(null);
- }
- });
- };
- /**
- * Handle init-segment responses
- *
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Function} finishProcessingFn - a callback to execute to continue processing
- * this request
- */
-
- const handleInitSegmentResponse = ({
- segment,
- finishProcessingFn
- }) => (error, request) => {
- const errorObj = handleErrors(error, request);
- if (errorObj) {
- return finishProcessingFn(errorObj, segment);
- }
- const bytes = new Uint8Array(request.response); // init segment is encypted, we will have to wait
- // until the key request is done to decrypt.
-
- if (segment.map.key) {
- segment.map.encryptedBytes = bytes;
- return finishProcessingFn(null, segment);
- }
- segment.map.bytes = bytes;
- parseInitSegment(segment, function (parseError) {
- if (parseError) {
- parseError.xhr = request;
- parseError.status = request.status;
- return finishProcessingFn(parseError, segment);
- }
- finishProcessingFn(null, segment);
- });
- };
- /**
- * Response handler for segment-requests being sure to set the correct
- * property depending on whether the segment is encryped or not
- * Also records and keeps track of stats that are used for ABR purposes
- *
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Function} finishProcessingFn - a callback to execute to continue processing
- * this request
- */
-
- const handleSegmentResponse = ({
- segment,
- finishProcessingFn,
- responseType
- }) => (error, request) => {
- const errorObj = handleErrors(error, request);
- if (errorObj) {
- return finishProcessingFn(errorObj, segment);
- }
- const newBytes =
- // although responseText "should" exist, this guard serves to prevent an error being
- // thrown for two primary cases:
- // 1. the mime type override stops working, or is not implemented for a specific
- // browser
- // 2. when using mock XHR libraries like sinon that do not allow the override behavior
- responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));
- segment.stats = getRequestStats(request);
- if (segment.key) {
- segment.encryptedBytes = new Uint8Array(newBytes);
- } else {
- segment.bytes = new Uint8Array(newBytes);
- }
- return finishProcessingFn(null, segment);
- };
- const transmuxAndNotify = ({
- segment,
- bytes,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }) => {
- const fmp4Tracks = segment.map && segment.map.tracks || {};
- const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.
- // One reason for this is that in the case of full segments, we want to trust start
- // times from the probe, rather than the transmuxer.
-
- let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');
- const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');
- let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');
- const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');
- const finish = () => transmux({
- bytes,
- transmuxer: segment.transmuxer,
- audioAppendStart: segment.audioAppendStart,
- gopsToAlignWith: segment.gopsToAlignWith,
- remux: isMuxed,
- onData: result => {
- result.type = result.type === 'combined' ? 'video' : result.type;
- dataFn(segment, result);
- },
- onTrackInfo: trackInfo => {
- if (trackInfoFn) {
- if (isMuxed) {
- trackInfo.isMuxed = true;
- }
- trackInfoFn(segment, trackInfo);
- }
- },
- onAudioTimingInfo: audioTimingInfo => {
- // we only want the first start value we encounter
- if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {
- audioStartFn(audioTimingInfo.start);
- audioStartFn = null;
- } // we want to continually update the end time
-
- if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {
- audioEndFn(audioTimingInfo.end);
- }
- },
- onVideoTimingInfo: videoTimingInfo => {
- // we only want the first start value we encounter
- if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {
- videoStartFn(videoTimingInfo.start);
- videoStartFn = null;
- } // we want to continually update the end time
-
- if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {
- videoEndFn(videoTimingInfo.end);
- }
- },
- onVideoSegmentTimingInfo: videoSegmentTimingInfo => {
- videoSegmentTimingInfoFn(videoSegmentTimingInfo);
- },
- onAudioSegmentTimingInfo: audioSegmentTimingInfo => {
- audioSegmentTimingInfoFn(audioSegmentTimingInfo);
- },
- onId3: (id3Frames, dispatchType) => {
- id3Fn(segment, id3Frames, dispatchType);
- },
- onCaptions: captions => {
- captionsFn(segment, [captions]);
- },
- isEndOfTimeline,
- onEndedTimeline: () => {
- endedTimelineFn();
- },
- onTransmuxerLog,
- onDone: result => {
- if (!doneFn) {
- return;
- }
- result.type = result.type === 'combined' ? 'video' : result.type;
- doneFn(null, segment, result);
- }
- }); // In the transmuxer, we don't yet have the ability to extract a "proper" start time.
- // Meaning cached frame data may corrupt our notion of where this segment
- // really starts. To get around this, probe for the info needed.
-
- workerCallback({
- action: 'probeTs',
- transmuxer: segment.transmuxer,
- data: bytes,
- baseStartTime: segment.baseStartTime,
- callback: data => {
- segment.bytes = bytes = data.data;
- const probeResult = data.result;
- if (probeResult) {
- trackInfoFn(segment, {
- hasAudio: probeResult.hasAudio,
- hasVideo: probeResult.hasVideo,
- isMuxed
- });
- trackInfoFn = null;
- }
- finish();
- }
- });
- };
- const handleSegmentBytes = ({
- segment,
- bytes,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }) => {
- let bytesAsUint8Array = new Uint8Array(bytes); // TODO:
- // We should have a handler that fetches the number of bytes required
- // to check if something is fmp4. This will allow us to save bandwidth
- // because we can only exclude a playlist and abort requests
- // by codec after trackinfo triggers.
-
- if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {
- segment.isFmp4 = true;
- const {
- tracks
- } = segment.map;
- const trackInfo = {
- isFmp4: true,
- hasVideo: !!tracks.video,
- hasAudio: !!tracks.audio
- }; // if we have a audio track, with a codec that is not set to
- // encrypted audio
-
- if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {
- trackInfo.audioCodec = tracks.audio.codec;
- } // if we have a video track, with a codec that is not set to
- // encrypted video
-
- if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {
- trackInfo.videoCodec = tracks.video.codec;
- }
- if (tracks.video && tracks.audio) {
- trackInfo.isMuxed = true;
- } // since we don't support appending fmp4 data on progress, we know we have the full
- // segment here
-
- trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start
- // time. The end time can be roughly calculated by the receiver using the duration.
- //
- // Note that the start time returned by the probe reflects the baseMediaDecodeTime, as
- // that is the true start of the segment (where the playback engine should begin
- // decoding).
-
- const finishLoading = (captions, id3Frames) => {
- // if the track still has audio at this point it is only possible
- // for it to be audio only. See `tracks.video && tracks.audio` if statement
- // above.
- // we make sure to use segment.bytes here as that
- dataFn(segment, {
- data: bytesAsUint8Array,
- type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'
- });
- if (id3Frames && id3Frames.length) {
- id3Fn(segment, id3Frames);
- }
- if (captions && captions.length) {
- captionsFn(segment, captions);
- }
- doneFn(null, segment, {});
- };
- workerCallback({
- action: 'probeMp4StartTime',
- timescales: segment.map.timescales,
- data: bytesAsUint8Array,
- transmuxer: segment.transmuxer,
- callback: ({
- data,
- startTime
- }) => {
- // transfer bytes back to us
- bytes = data.buffer;
- segment.bytes = bytesAsUint8Array = data;
- if (trackInfo.hasAudio && !trackInfo.isMuxed) {
- timingInfoFn(segment, 'audio', 'start', startTime);
- }
- if (trackInfo.hasVideo) {
- timingInfoFn(segment, 'video', 'start', startTime);
- }
- workerCallback({
- action: 'probeEmsgID3',
- data: bytesAsUint8Array,
- transmuxer: segment.transmuxer,
- offset: startTime,
- callback: ({
- emsgData,
- id3Frames
- }) => {
- // transfer bytes back to us
- bytes = emsgData.buffer;
- segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.
- // Initialize CaptionParser if it hasn't been yet
-
- if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {
- finishLoading(undefined, id3Frames);
- return;
- }
- workerCallback({
- action: 'pushMp4Captions',
- endAction: 'mp4Captions',
- transmuxer: segment.transmuxer,
- data: bytesAsUint8Array,
- timescales: segment.map.timescales,
- trackIds: [tracks.video.id],
- callback: message => {
- // transfer bytes back to us
- bytes = message.data.buffer;
- segment.bytes = bytesAsUint8Array = message.data;
- message.logs.forEach(function (log) {
- onTransmuxerLog(merge(log, {
- stream: 'mp4CaptionParser'
- }));
- });
- finishLoading(message.captions, id3Frames);
- }
- });
- }
- });
- }
- });
- return;
- } // VTT or other segments that don't need processing
-
- if (!segment.transmuxer) {
- doneFn(null, segment, {});
- return;
- }
- if (typeof segment.container === 'undefined') {
- segment.container = detectContainerForBytes(bytesAsUint8Array);
- }
- if (segment.container !== 'ts' && segment.container !== 'aac') {
- trackInfoFn(segment, {
- hasAudio: false,
- hasVideo: false
- });
- doneFn(null, segment, {});
- return;
- } // ts or aac
-
- transmuxAndNotify({
- segment,
- bytes,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- });
- };
- const decrypt = function ({
- id,
- key,
- encryptedBytes,
- decryptionWorker
- }, callback) {
- const decryptionHandler = event => {
- if (event.data.source === id) {
- decryptionWorker.removeEventListener('message', decryptionHandler);
- const decrypted = event.data.decrypted;
- callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));
- }
- };
- decryptionWorker.addEventListener('message', decryptionHandler);
- let keyBytes;
- if (key.bytes.slice) {
- keyBytes = key.bytes.slice();
- } else {
- keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));
- } // incrementally decrypt the bytes
-
- decryptionWorker.postMessage(createTransferableMessage({
- source: id,
- encrypted: encryptedBytes,
- key: keyBytes,
- iv: key.iv
- }), [encryptedBytes.buffer, keyBytes.buffer]);
- };
- /**
- * Decrypt the segment via the decryption web worker
- *
- * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
- * routines
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Function} trackInfoFn - a callback that receives track info
- * @param {Function} timingInfoFn - a callback that receives timing info
- * @param {Function} videoSegmentTimingInfoFn
- * a callback that receives video timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} audioSegmentTimingInfoFn
- * a callback that receives audio timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {boolean} isEndOfTimeline
- * true if this segment represents the last segment in a timeline
- * @param {Function} endedTimelineFn
- * a callback made when a timeline is ended, will only be called if
- * isEndOfTimeline is true
- * @param {Function} dataFn - a callback that is executed when segment bytes are available
- * and ready to use
- * @param {Function} doneFn - a callback that is executed after decryption has completed
- */
-
- const decryptSegment = ({
- decryptionWorker,
- segment,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }) => {
- decrypt({
- id: segment.requestId,
- key: segment.key,
- encryptedBytes: segment.encryptedBytes,
- decryptionWorker
- }, decryptedBytes => {
- segment.bytes = decryptedBytes;
- handleSegmentBytes({
- segment,
- bytes: segment.bytes,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- });
- });
- };
- /**
- * This function waits for all XHRs to finish (with either success or failure)
- * before continueing processing via it's callback. The function gathers errors
- * from each request into a single errors array so that the error status for
- * each request can be examined later.
- *
- * @param {Object} activeXhrs - an object that tracks all XHR requests
- * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
- * routines
- * @param {Function} trackInfoFn - a callback that receives track info
- * @param {Function} timingInfoFn - a callback that receives timing info
- * @param {Function} videoSegmentTimingInfoFn
- * a callback that receives video timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} audioSegmentTimingInfoFn
- * a callback that receives audio timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} id3Fn - a callback that receives ID3 metadata
- * @param {Function} captionsFn - a callback that receives captions
- * @param {boolean} isEndOfTimeline
- * true if this segment represents the last segment in a timeline
- * @param {Function} endedTimelineFn
- * a callback made when a timeline is ended, will only be called if
- * isEndOfTimeline is true
- * @param {Function} dataFn - a callback that is executed when segment bytes are available
- * and ready to use
- * @param {Function} doneFn - a callback that is executed after all resources have been
- * downloaded and any decryption completed
- */
-
- const waitForCompletion = ({
- activeXhrs,
- decryptionWorker,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }) => {
- let count = 0;
- let didError = false;
- return (error, segment) => {
- if (didError) {
- return;
- }
- if (error) {
- didError = true; // If there are errors, we have to abort any outstanding requests
-
- abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we
- // handle the aborted events from those requests, there are some cases where we may
- // never get an aborted event. For instance, if the network connection is lost and
- // there were two requests, the first may have triggered an error immediately, while
- // the second request remains unsent. In that case, the aborted algorithm will not
- // trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method
- //
- // We also can't rely on the ready state of the XHR, since the request that
- // triggered the connection error may also show as a ready state of 0 (unsent).
- // Therefore, we have to finish this group of requests immediately after the first
- // seen error.
-
- return doneFn(error, segment);
- }
- count += 1;
- if (count === activeXhrs.length) {
- const segmentFinish = function () {
- if (segment.encryptedBytes) {
- return decryptSegment({
- decryptionWorker,
- segment,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- });
- } // Otherwise, everything is ready just continue
-
- handleSegmentBytes({
- segment,
- bytes: segment.bytes,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- });
- }; // Keep track of when *all* of the requests have completed
-
- segment.endOfAllRequests = Date.now();
- if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {
- return decrypt({
- decryptionWorker,
- // add -init to the "id" to differentiate between segment
- // and init segment decryption, just in case they happen
- // at the same time at some point in the future.
- id: segment.requestId + '-init',
- encryptedBytes: segment.map.encryptedBytes,
- key: segment.map.key
- }, decryptedBytes => {
- segment.map.bytes = decryptedBytes;
- parseInitSegment(segment, parseError => {
- if (parseError) {
- abortAll(activeXhrs);
- return doneFn(parseError, segment);
- }
- segmentFinish();
- });
- });
- }
- segmentFinish();
- }
- };
- };
- /**
- * Calls the abort callback if any request within the batch was aborted. Will only call
- * the callback once per batch of requests, even if multiple were aborted.
- *
- * @param {Object} loadendState - state to check to see if the abort function was called
- * @param {Function} abortFn - callback to call for abort
- */
-
- const handleLoadEnd = ({
- loadendState,
- abortFn
- }) => event => {
- const request = event.target;
- if (request.aborted && abortFn && !loadendState.calledAbortFn) {
- abortFn();
- loadendState.calledAbortFn = true;
- }
- };
- /**
- * Simple progress event callback handler that gathers some stats before
- * executing a provided callback with the `segment` object
- *
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Function} progressFn - a callback that is executed each time a progress event
- * is received
- * @param {Function} trackInfoFn - a callback that receives track info
- * @param {Function} timingInfoFn - a callback that receives timing info
- * @param {Function} videoSegmentTimingInfoFn
- * a callback that receives video timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} audioSegmentTimingInfoFn
- * a callback that receives audio timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {boolean} isEndOfTimeline
- * true if this segment represents the last segment in a timeline
- * @param {Function} endedTimelineFn
- * a callback made when a timeline is ended, will only be called if
- * isEndOfTimeline is true
- * @param {Function} dataFn - a callback that is executed when segment bytes are available
- * and ready to use
- * @param {Event} event - the progress event object from XMLHttpRequest
- */
-
- const handleProgress = ({
- segment,
- progressFn,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn
- }) => event => {
- const request = event.target;
- if (request.aborted) {
- return;
- }
- segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data
-
- if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {
- segment.stats.firstBytesReceivedAt = Date.now();
- }
- return progressFn(event, segment);
- };
- /**
- * Load all resources and does any processing necessary for a media-segment
- *
- * Features:
- * decrypts the media-segment if it has a key uri and an iv
- * aborts *all* requests if *any* one request fails
- *
- * The segment object, at minimum, has the following format:
- * {
- * resolvedUri: String,
- * [transmuxer]: Object,
- * [byterange]: {
- * offset: Number,
- * length: Number
- * },
- * [key]: {
- * resolvedUri: String
- * [byterange]: {
- * offset: Number,
- * length: Number
- * },
- * iv: {
- * bytes: Uint32Array
- * }
- * },
- * [map]: {
- * resolvedUri: String,
- * [byterange]: {
- * offset: Number,
- * length: Number
- * },
- * [bytes]: Uint8Array
- * }
- * }
- * ...where [name] denotes optional properties
- *
- * @param {Function} xhr - an instance of the xhr wrapper in xhr.js
- * @param {Object} xhrOptions - the base options to provide to all xhr requests
- * @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128
- * decryption routines
- * @param {Object} segment - a simplified copy of the segmentInfo object
- * from SegmentLoader
- * @param {Function} abortFn - a callback called (only once) if any piece of a request was
- * aborted
- * @param {Function} progressFn - a callback that receives progress events from the main
- * segment's xhr request
- * @param {Function} trackInfoFn - a callback that receives track info
- * @param {Function} timingInfoFn - a callback that receives timing info
- * @param {Function} videoSegmentTimingInfoFn
- * a callback that receives video timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} audioSegmentTimingInfoFn
- * a callback that receives audio timing info based on media times and
- * any adjustments made by the transmuxer
- * @param {Function} id3Fn - a callback that receives ID3 metadata
- * @param {Function} captionsFn - a callback that receives captions
- * @param {boolean} isEndOfTimeline
- * true if this segment represents the last segment in a timeline
- * @param {Function} endedTimelineFn
- * a callback made when a timeline is ended, will only be called if
- * isEndOfTimeline is true
- * @param {Function} dataFn - a callback that receives data from the main segment's xhr
- * request, transmuxed if needed
- * @param {Function} doneFn - a callback that is executed only once all requests have
- * succeeded or failed
- * @return {Function} a function that, when invoked, immediately aborts all
- * outstanding requests
- */
-
- const mediaSegmentRequest = ({
- xhr,
- xhrOptions,
- decryptionWorker,
- segment,
- abortFn,
- progressFn,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }) => {
- const activeXhrs = [];
- const finishProcessingFn = waitForCompletion({
- activeXhrs,
- decryptionWorker,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn,
- doneFn,
- onTransmuxerLog
- }); // optionally, request the decryption key
-
- if (segment.key && !segment.key.bytes) {
- const objects = [segment.key];
- if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {
- objects.push(segment.map.key);
- }
- const keyRequestOptions = merge(xhrOptions, {
- uri: segment.key.resolvedUri,
- responseType: 'arraybuffer',
- requestType: 'segment-key'
- });
- const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn);
- const keyXhr = xhr(keyRequestOptions, keyRequestCallback);
- activeXhrs.push(keyXhr);
- } // optionally, request the associated media init segment
-
- if (segment.map && !segment.map.bytes) {
- const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);
- if (differentMapKey) {
- const mapKeyRequestOptions = merge(xhrOptions, {
- uri: segment.map.key.resolvedUri,
- responseType: 'arraybuffer',
- requestType: 'segment-key'
- });
- const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn);
- const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);
- activeXhrs.push(mapKeyXhr);
- }
- const initSegmentOptions = merge(xhrOptions, {
- uri: segment.map.resolvedUri,
- responseType: 'arraybuffer',
- headers: segmentXhrHeaders(segment.map),
- requestType: 'segment-media-initialization'
- });
- const initSegmentRequestCallback = handleInitSegmentResponse({
- segment,
- finishProcessingFn
- });
- const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);
- activeXhrs.push(initSegmentXhr);
- }
- const segmentRequestOptions = merge(xhrOptions, {
- uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,
- responseType: 'arraybuffer',
- headers: segmentXhrHeaders(segment),
- requestType: 'segment'
- });
- const segmentRequestCallback = handleSegmentResponse({
- segment,
- finishProcessingFn,
- responseType: segmentRequestOptions.responseType
- });
- const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);
- segmentXhr.addEventListener('progress', handleProgress({
- segment,
- progressFn,
- trackInfoFn,
- timingInfoFn,
- videoSegmentTimingInfoFn,
- audioSegmentTimingInfoFn,
- id3Fn,
- captionsFn,
- isEndOfTimeline,
- endedTimelineFn,
- dataFn
- }));
- activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks
- // multiple times, provide a shared state object
-
- const loadendState = {};
- activeXhrs.forEach(activeXhr => {
- activeXhr.addEventListener('loadend', handleLoadEnd({
- loadendState,
- abortFn
- }));
- });
- return () => abortAll(activeXhrs);
- };
-
- /**
- * @file - codecs.js - Handles tasks regarding codec strings such as translating them to
- * codec strings, or translating codec strings into objects that can be examined.
- */
- const logFn$1 = logger('CodecUtils');
- /**
- * Returns a set of codec strings parsed from the playlist or the default
- * codec strings if no codecs were specified in the playlist
- *
- * @param {Playlist} media the current media playlist
- * @return {Object} an object with the video and audio codecs
- */
-
- const getCodecs = function (media) {
- // if the codecs were explicitly specified, use them instead of the
- // defaults
- const mediaAttributes = media.attributes || {};
- if (mediaAttributes.CODECS) {
- return parseCodecs(mediaAttributes.CODECS);
- }
- };
- const isMaat = (main, media) => {
- const mediaAttributes = media.attributes || {};
- return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
- };
- const isMuxed = (main, media) => {
- if (!isMaat(main, media)) {
- return true;
- }
- const mediaAttributes = media.attributes || {};
- const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
- for (const groupId in audioGroup) {
- // If an audio group has a URI (the case for HLS, as HLS will use external playlists),
- // or there are listed playlists (the case for DASH, as the manifest will have already
- // provided all of the details necessary to generate the audio playlist, as opposed to
- // HLS' externally requested playlists), then the content is demuxed.
- if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {
- return true;
- }
- }
- return false;
- };
- const unwrapCodecList = function (codecList) {
- const codecs = {};
- codecList.forEach(({
- mediaType,
- type,
- details
- }) => {
- codecs[mediaType] = codecs[mediaType] || [];
- codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));
- });
- Object.keys(codecs).forEach(function (mediaType) {
- if (codecs[mediaType].length > 1) {
- logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);
- codecs[mediaType] = null;
- return;
- }
- codecs[mediaType] = codecs[mediaType][0];
- });
- return codecs;
- };
- const codecCount = function (codecObj) {
- let count = 0;
- if (codecObj.audio) {
- count++;
- }
- if (codecObj.video) {
- count++;
- }
- return count;
- };
- /**
- * Calculates the codec strings for a working configuration of
- * SourceBuffers to play variant streams in a main playlist. If
- * there is no possible working configuration, an empty object will be
- * returned.
- *
- * @param main {Object} the m3u8 object for the main playlist
- * @param media {Object} the m3u8 object for the variant playlist
- * @return {Object} the codec strings.
- *
- * @private
- */
-
- const codecsForPlaylist = function (main, media) {
- const mediaAttributes = media.attributes || {};
- const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.
- // Put another way, there is no way to have a video-only multiple-audio HLS!
-
- if (isMaat(main, media) && !codecInfo.audio) {
- if (!isMuxed(main, media)) {
- // It is possible for codecs to be specified on the audio media group playlist but
- // not on the rendition playlist. This is mostly the case for DASH, where audio and
- // video are always separate (and separately specified).
- const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);
- if (defaultCodecs.audio) {
- codecInfo.audio = defaultCodecs.audio;
- }
- }
- }
- return codecInfo;
- };
- const logFn = logger('PlaylistSelector');
- const representationToString = function (representation) {
- if (!representation || !representation.playlist) {
- return;
- }
- const playlist = representation.playlist;
- return JSON.stringify({
- id: playlist.id,
- bandwidth: representation.bandwidth,
- width: representation.width,
- height: representation.height,
- codecs: playlist.attributes && playlist.attributes.CODECS || ''
- });
- }; // Utilities
-
- /**
- * Returns the CSS value for the specified property on an element
- * using `getComputedStyle`. Firefox has a long-standing issue where
- * getComputedStyle() may return null when running in an iframe with
- * `display: none`.
- *
- * @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
- * @param {HTMLElement} el the htmlelement to work on
- * @param {string} the proprety to get the style for
- */
-
- const safeGetComputedStyle = function (el, property) {
- if (!el) {
- return '';
- }
- const result = window.getComputedStyle(el);
- if (!result) {
- return '';
- }
- return result[property];
- };
- /**
- * Resuable stable sort function
- *
- * @param {Playlists} array
- * @param {Function} sortFn Different comparators
- * @function stableSort
- */
-
- const stableSort = function (array, sortFn) {
- const newArray = array.slice();
- array.sort(function (left, right) {
- const cmp = sortFn(left, right);
- if (cmp === 0) {
- return newArray.indexOf(left) - newArray.indexOf(right);
- }
- return cmp;
- });
- };
- /**
- * A comparator function to sort two playlist object by bandwidth.
- *
- * @param {Object} left a media playlist object
- * @param {Object} right a media playlist object
- * @return {number} Greater than zero if the bandwidth attribute of
- * left is greater than the corresponding attribute of right. Less
- * than zero if the bandwidth of right is greater than left and
- * exactly zero if the two are equal.
- */
-
- const comparePlaylistBandwidth = function (left, right) {
- let leftBandwidth;
- let rightBandwidth;
- if (left.attributes.BANDWIDTH) {
- leftBandwidth = left.attributes.BANDWIDTH;
- }
- leftBandwidth = leftBandwidth || window.Number.MAX_VALUE;
- if (right.attributes.BANDWIDTH) {
- rightBandwidth = right.attributes.BANDWIDTH;
- }
- rightBandwidth = rightBandwidth || window.Number.MAX_VALUE;
- return leftBandwidth - rightBandwidth;
- };
- /**
- * A comparator function to sort two playlist object by resolution (width).
- *
- * @param {Object} left a media playlist object
- * @param {Object} right a media playlist object
- * @return {number} Greater than zero if the resolution.width attribute of
- * left is greater than the corresponding attribute of right. Less
- * than zero if the resolution.width of right is greater than left and
- * exactly zero if the two are equal.
- */
-
- const comparePlaylistResolution = function (left, right) {
- let leftWidth;
- let rightWidth;
- if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {
- leftWidth = left.attributes.RESOLUTION.width;
- }
- leftWidth = leftWidth || window.Number.MAX_VALUE;
- if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {
- rightWidth = right.attributes.RESOLUTION.width;
- }
- rightWidth = rightWidth || window.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions
- // have the same media dimensions/ resolution
-
- if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {
- return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;
- }
- return leftWidth - rightWidth;
- };
- /**
- * Chooses the appropriate media playlist based on bandwidth and player size
- *
- * @param {Object} main
- * Object representation of the main manifest
- * @param {number} playerBandwidth
- * Current calculated bandwidth of the player
- * @param {number} playerWidth
- * Current width of the player element (should account for the device pixel ratio)
- * @param {number} playerHeight
- * Current height of the player element (should account for the device pixel ratio)
- * @param {boolean} limitRenditionByPlayerDimensions
- * True if the player width and height should be used during the selection, false otherwise
- * @param {Object} playlistController
- * the current playlistController object
- * @return {Playlist} the highest bitrate playlist less than the
- * currently detected bandwidth, accounting for some amount of
- * bandwidth variance
- */
-
- let simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {
- // If we end up getting called before `main` is available, exit early
- if (!main) {
- return;
- }
- const options = {
- bandwidth: playerBandwidth,
- width: playerWidth,
- height: playerHeight,
- limitRenditionByPlayerDimensions
- };
- let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.
-
- if (Playlist.isAudioOnly(main)) {
- playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true
- // at the buttom of this function for debugging.
-
- options.audioOnly = true;
- } // convert the playlists to an intermediary representation to make comparisons easier
-
- let sortedPlaylistReps = playlists.map(playlist => {
- let bandwidth;
- const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;
- const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;
- bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;
- bandwidth = bandwidth || window.Number.MAX_VALUE;
- return {
- bandwidth,
- width,
- height,
- playlist
- };
- });
- stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to
- // incompatible configurations
-
- sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations
- // api or excluded temporarily due to playback errors.
-
- let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));
- if (!enabledPlaylistReps.length) {
- // if there are no enabled playlists, then they have all been excluded or disabled
- // by the user through the representations api. In this case, ignore exclusion and
- // fallback to what the user wants by using playlists the user has not disabled.
- enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));
- } // filter out any variant that has greater effective bitrate
- // than the current estimated bandwidth
-
- const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);
- let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth
- // and then taking the very first element
-
- const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.
-
- if (limitRenditionByPlayerDimensions === false) {
- const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
- if (chosenRep && chosenRep.playlist) {
- let type = 'sortedPlaylistReps';
- if (bandwidthBestRep) {
- type = 'bandwidthBestRep';
- }
- if (enabledPlaylistReps[0]) {
- type = 'enabledPlaylistReps';
- }
- logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
- return chosenRep.playlist;
- }
- logFn('could not choose a playlist with options', options);
- return null;
- } // filter out playlists without resolution information
-
- const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution
-
- stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it
-
- const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);
- highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution
-
- const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
- let resolutionPlusOneList;
- let resolutionPlusOneSmallest;
- let resolutionPlusOneRep; // find the smallest variant that is larger than the player
- // if there is no match of exact resolution
-
- if (!resolutionBestRep) {
- resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution
-
- resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that
- // is just-larger-than the video player
-
- highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];
- resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
- }
- let leastPixelDiffRep; // If this selector proves to be better than others,
- // resolutionPlusOneRep and resolutionBestRep and all
- // the code involving them should be removed.
-
- if (playlistController.leastPixelDiffSelector) {
- // find the variant that is closest to the player's pixel size
- const leastPixelDiffList = haveResolution.map(rep => {
- rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);
- return rep;
- }); // get the highest bandwidth, closest resolution playlist
-
- stableSort(leastPixelDiffList, (left, right) => {
- // sort by highest bandwidth if pixelDiff is the same
- if (left.pixelDiff === right.pixelDiff) {
- return right.bandwidth - left.bandwidth;
- }
- return left.pixelDiff - right.pixelDiff;
- });
- leastPixelDiffRep = leastPixelDiffList[0];
- } // fallback chain of variants
-
- const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
- if (chosenRep && chosenRep.playlist) {
- let type = 'sortedPlaylistReps';
- if (leastPixelDiffRep) {
- type = 'leastPixelDiffRep';
- } else if (resolutionPlusOneRep) {
- type = 'resolutionPlusOneRep';
- } else if (resolutionBestRep) {
- type = 'resolutionBestRep';
- } else if (bandwidthBestRep) {
- type = 'bandwidthBestRep';
- } else if (enabledPlaylistReps[0]) {
- type = 'enabledPlaylistReps';
- }
- logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
- return chosenRep.playlist;
- }
- logFn('could not choose a playlist with options', options);
- return null;
- };
-
- /**
- * Chooses the appropriate media playlist based on the most recent
- * bandwidth estimate and the player size.
- *
- * Expects to be called within the context of an instance of VhsHandler
- *
- * @return {Playlist} the highest bitrate playlist less than the
- * currently detected bandwidth, accounting for some amount of
- * bandwidth variance
- */
-
- const lastBandwidthSelector = function () {
- let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
- if (!isNaN(this.customPixelRatio)) {
- pixelRatio = this.customPixelRatio;
- }
- return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
- };
- /**
- * Chooses the appropriate media playlist based on an
- * exponential-weighted moving average of the bandwidth after
- * filtering for player size.
- *
- * Expects to be called within the context of an instance of VhsHandler
- *
- * @param {number} decay - a number between 0 and 1. Higher values of
- * this parameter will cause previous bandwidth estimates to lose
- * significance more quickly.
- * @return {Function} a function which can be invoked to create a new
- * playlist selector function.
- * @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
- */
-
- const movingAverageBandwidthSelector = function (decay) {
- let average = -1;
- let lastSystemBandwidth = -1;
- if (decay < 0 || decay > 1) {
- throw new Error('Moving average bandwidth decay must be between 0 and 1.');
- }
- return function () {
- let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
- if (!isNaN(this.customPixelRatio)) {
- pixelRatio = this.customPixelRatio;
- }
- if (average < 0) {
- average = this.systemBandwidth;
- lastSystemBandwidth = this.systemBandwidth;
- } // stop the average value from decaying for every 250ms
- // when the systemBandwidth is constant
- // and
- // stop average from setting to a very low value when the
- // systemBandwidth becomes 0 in case of chunk cancellation
-
- if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {
- average = decay * this.systemBandwidth + (1 - decay) * average;
- lastSystemBandwidth = this.systemBandwidth;
- }
- return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
- };
- };
- /**
- * Chooses the appropriate media playlist based on the potential to rebuffer
- *
- * @param {Object} settings
- * Object of information required to use this selector
- * @param {Object} settings.main
- * Object representation of the main manifest
- * @param {number} settings.currentTime
- * The current time of the player
- * @param {number} settings.bandwidth
- * Current measured bandwidth
- * @param {number} settings.duration
- * Duration of the media
- * @param {number} settings.segmentDuration
- * Segment duration to be used in round trip time calculations
- * @param {number} settings.timeUntilRebuffer
- * Time left in seconds until the player has to rebuffer
- * @param {number} settings.currentTimeline
- * The current timeline segments are being loaded from
- * @param {SyncController} settings.syncController
- * SyncController for determining if we have a sync point for a given playlist
- * @return {Object|null}
- * {Object} return.playlist
- * The highest bandwidth playlist with the least amount of rebuffering
- * {Number} return.rebufferingImpact
- * The amount of time in seconds switching to this playlist will rebuffer. A
- * negative value means that switching will cause zero rebuffering.
- */
-
- const minRebufferMaxBandwidthSelector = function (settings) {
- const {
- main,
- currentTime,
- bandwidth,
- duration,
- segmentDuration,
- timeUntilRebuffer,
- currentTimeline,
- syncController
- } = settings; // filter out any playlists that have been excluded due to
- // incompatible configurations
-
- const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations
- // api or excluded temporarily due to playback errors.
-
- let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);
- if (!enabledPlaylists.length) {
- // if there are no enabled playlists, then they have all been excluded or disabled
- // by the user through the representations api. In this case, ignore exclusion and
- // fallback to what the user wants by using playlists the user has not disabled.
- enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));
- }
- const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));
- const rebufferingEstimates = bandwidthPlaylists.map(playlist => {
- const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a
- // sync request first. This will double the request time
-
- const numRequests = syncPoint ? 1 : 2;
- const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);
- const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;
- return {
- playlist,
- rebufferingImpact
- };
- });
- const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC
-
- stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));
- if (noRebufferingPlaylists.length) {
- return noRebufferingPlaylists[0];
- }
- stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);
- return rebufferingEstimates[0] || null;
- };
- /**
- * Chooses the appropriate media playlist, which in this case is the lowest bitrate
- * one with video. If no renditions with video exist, return the lowest audio rendition.
- *
- * Expects to be called within the context of an instance of VhsHandler
- *
- * @return {Object|null}
- * {Object} return.playlist
- * The lowest bitrate playlist that contains a video codec. If no such rendition
- * exists pick the lowest audio rendition.
- */
-
- const lowestBitrateCompatibleVariantSelector = function () {
- // filter out any playlists that have been excluded due to
- // incompatible configurations or playback errors
- const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate
-
- stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video
- // (this is not necessarily true, although it is generally true).
- //
- // If an entire manifest has no valid videos everything will get filtered
- // out.
-
- const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);
- return playlistsWithVideo[0] || null;
- };
-
- /**
- * Combine all segments into a single Uint8Array
- *
- * @param {Object} segmentObj
- * @return {Uint8Array} concatenated bytes
- * @private
- */
- const concatSegments = segmentObj => {
- let offset = 0;
- let tempBuffer;
- if (segmentObj.bytes) {
- tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array
-
- segmentObj.segments.forEach(segment => {
- tempBuffer.set(segment, offset);
- offset += segment.byteLength;
- });
- }
- return tempBuffer;
- };
- /**
- * Example:
- * https://host.com/path1/path2/path3/segment.ts?arg1=val1
- * -->
- * path3/segment.ts
- *
- * @param resolvedUri
- * @return {string}
- */
-
- function compactSegmentUrlDescription(resolvedUri) {
- try {
- return new URL(resolvedUri).pathname.split('/').slice(-2).join('/');
- } catch (e) {
- return '';
- }
- }
-
- /**
- * @file text-tracks.js
- */
- /**
- * Create captions text tracks on video.js if they do not exist
- *
- * @param {Object} inbandTextTracks a reference to current inbandTextTracks
- * @param {Object} tech the video.js tech
- * @param {Object} captionStream the caption stream to create
- * @private
- */
-
- const createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {
- if (!inbandTextTracks[captionStream]) {
- tech.trigger({
- type: 'usage',
- name: 'vhs-608'
- });
- let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them
-
- if (/^cc708_/.test(captionStream)) {
- instreamId = 'SERVICE' + captionStream.split('_')[1];
- }
- const track = tech.textTracks().getTrackById(instreamId);
- if (track) {
- // Resuse an existing track with a CC# id because this was
- // very likely created by videojs-contrib-hls from information
- // in the m3u8 for us to use
- inbandTextTracks[captionStream] = track;
- } else {
- // This section gets called when we have caption services that aren't specified in the manifest.
- // Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.
- const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
- let label = captionStream;
- let language = captionStream;
- let def = false;
- const captionService = captionServices[instreamId];
- if (captionService) {
- label = captionService.label;
- language = captionService.language;
- def = captionService.default;
- } // Otherwise, create a track with the default `CC#` label and
- // without a language
-
- inbandTextTracks[captionStream] = tech.addRemoteTextTrack({
- kind: 'captions',
- id: instreamId,
- // TODO: investigate why this doesn't seem to turn the caption on by default
- default: def,
- label,
- language
- }, false).track;
- }
- }
- };
- /**
- * Add caption text track data to a source handler given an array of captions
- *
- * @param {Object}
- * @param {Object} inbandTextTracks the inband text tracks
- * @param {number} timestampOffset the timestamp offset of the source buffer
- * @param {Array} captionArray an array of caption data
- * @private
- */
-
- const addCaptionData = function ({
- inbandTextTracks,
- captionArray,
- timestampOffset
- }) {
- if (!captionArray) {
- return;
- }
- const Cue = window.WebKitDataCue || window.VTTCue;
- captionArray.forEach(caption => {
- const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array
- // with positioning data
-
- if (caption.content) {
- caption.content.forEach(value => {
- const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);
- cue.line = value.line;
- cue.align = 'left';
- cue.position = value.position;
- cue.positionAlign = 'line-left';
- inbandTextTracks[track].addCue(cue);
- });
- } else {
- // otherwise, a text value with combined captions is sent
- inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));
- }
- });
- };
- /**
- * Define properties on a cue for backwards compatability,
- * but warn the user that the way that they are using it
- * is depricated and will be removed at a later date.
- *
- * @param {Cue} cue the cue to add the properties on
- * @private
- */
-
- const deprecateOldCue = function (cue) {
- Object.defineProperties(cue.frame, {
- id: {
- get() {
- videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');
- return cue.value.key;
- }
- },
- value: {
- get() {
- videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');
- return cue.value.data;
- }
- },
- privateData: {
- get() {
- videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');
- return cue.value.data;
- }
- }
- });
- };
- /**
- * Add metadata text track data to a source handler given an array of metadata
- *
- * @param {Object}
- * @param {Object} inbandTextTracks the inband text tracks
- * @param {Array} metadataArray an array of meta data
- * @param {number} timestampOffset the timestamp offset of the source buffer
- * @param {number} videoDuration the duration of the video
- * @private
- */
-
- const addMetadata = ({
- inbandTextTracks,
- metadataArray,
- timestampOffset,
- videoDuration
- }) => {
- if (!metadataArray) {
- return;
- }
- const Cue = window.WebKitDataCue || window.VTTCue;
- const metadataTrack = inbandTextTracks.metadataTrack_;
- if (!metadataTrack) {
- return;
- }
- metadataArray.forEach(metadata => {
- const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,
- // ignore this bit of metadata.
- // This likely occurs when you have an non-timed ID3 tag like TIT2,
- // which is the "Title/Songname/Content description" frame
-
- if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {
- return;
- } // If we have no frames, we can't create a cue.
-
- if (!metadata.frames || !metadata.frames.length) {
- return;
- }
- metadata.frames.forEach(frame => {
- const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
- cue.frame = frame;
- cue.value = frame;
- deprecateOldCue(cue);
- metadataTrack.addCue(cue);
- });
- });
- if (!metadataTrack.cues || !metadataTrack.cues.length) {
- return;
- } // Updating the metadeta cues so that
- // the endTime of each cue is the startTime of the next cue
- // the endTime of last cue is the duration of the video
-
- const cues = metadataTrack.cues;
- const cuesArray = []; // Create a copy of the TextTrackCueList...
- // ...disregarding cues with a falsey value
-
- for (let i = 0; i < cues.length; i++) {
- if (cues[i]) {
- cuesArray.push(cues[i]);
- }
- } // Group cues by their startTime value
-
- const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {
- const timeSlot = obj[cue.startTime] || [];
- timeSlot.push(cue);
- obj[cue.startTime] = timeSlot;
- return obj;
- }, {}); // Sort startTimes by ascending order
-
- const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime
-
- sortedStartTimes.forEach((startTime, idx) => {
- const cueGroup = cuesGroupedByStartTime[startTime];
- const finiteDuration = isFinite(videoDuration) ? videoDuration : startTime;
- const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime
-
- cueGroup.forEach(cue => {
- cue.endTime = nextTime;
- });
- });
- }; // object for mapping daterange attributes
-
- const dateRangeAttr = {
- id: 'ID',
- class: 'CLASS',
- startDate: 'START-DATE',
- duration: 'DURATION',
- endDate: 'END-DATE',
- endOnNext: 'END-ON-NEXT',
- plannedDuration: 'PLANNED-DURATION',
- scte35Out: 'SCTE35-OUT',
- scte35In: 'SCTE35-IN'
- };
- const dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);
- /**
- * Add DateRange metadata text track to a source handler given an array of metadata
- *
- * @param {Object}
- * @param {Object} inbandTextTracks the inband text tracks
- * @param {Array} dateRanges parsed media playlist
- * @private
- */
-
- const addDateRangeMetadata = ({
- inbandTextTracks,
- dateRanges
- }) => {
- const metadataTrack = inbandTextTracks.metadataTrack_;
- if (!metadataTrack) {
- return;
- }
- const Cue = window.WebKitDataCue || window.VTTCue;
- dateRanges.forEach(dateRange => {
- // we generate multiple cues for each date range with different attributes
- for (const key of Object.keys(dateRange)) {
- if (dateRangeKeysToOmit.has(key)) {
- continue;
- }
- const cue = new Cue(dateRange.startTime, dateRange.endTime, '');
- cue.id = dateRange.id;
- cue.type = 'com.apple.quicktime.HLS';
- cue.value = {
- key: dateRangeAttr[key],
- data: dateRange[key]
- };
- if (key === 'scte35Out' || key === 'scte35In') {
- cue.value.data = new Uint8Array(cue.value.data.match(/[\da-f]{2}/gi)).buffer;
- }
- metadataTrack.addCue(cue);
- }
- dateRange.processDateRange();
- });
- };
- /**
- * Create metadata text track on video.js if it does not exist
- *
- * @param {Object} inbandTextTracks a reference to current inbandTextTracks
- * @param {string} dispatchType the inband metadata track dispatch type
- * @param {Object} tech the video.js tech
- * @private
- */
-
- const createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {
- if (inbandTextTracks.metadataTrack_) {
- return;
- }
- inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({
- kind: 'metadata',
- label: 'Timed Metadata'
- }, false).track;
- if (!videojs.browser.IS_ANY_SAFARI) {
- inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;
- }
- };
- /**
- * Remove cues from a track on video.js.
- *
- * @param {Double} start start of where we should remove the cue
- * @param {Double} end end of where the we should remove the cue
- * @param {Object} track the text track to remove the cues from
- * @private
- */
-
- const removeCuesFromTrack = function (start, end, track) {
- let i;
- let cue;
- if (!track) {
- return;
- }
- if (!track.cues) {
- return;
- }
- i = track.cues.length;
- while (i--) {
- cue = track.cues[i]; // Remove any cue within the provided start and end time
-
- if (cue.startTime >= start && cue.endTime <= end) {
- track.removeCue(cue);
- }
- }
- };
- /**
- * Remove duplicate cues from a track on video.js (a cue is considered a
- * duplicate if it has the same time interval and text as another)
- *
- * @param {Object} track the text track to remove the duplicate cues from
- * @private
- */
-
- const removeDuplicateCuesFromTrack = function (track) {
- const cues = track.cues;
- if (!cues) {
- return;
- }
- const uniqueCues = {};
- for (let i = cues.length - 1; i >= 0; i--) {
- const cue = cues[i];
- const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;
- if (uniqueCues[cueKey]) {
- track.removeCue(cue);
- } else {
- uniqueCues[cueKey] = cue;
- }
- }
- };
-
- /**
- * Returns a list of gops in the buffer that have a pts value of 3 seconds or more in
- * front of current time.
- *
- * @param {Array} buffer
- * The current buffer of gop information
- * @param {number} currentTime
- * The current time
- * @param {Double} mapping
- * Offset to map display time to stream presentation time
- * @return {Array}
- * List of gops considered safe to append over
- */
-
- const gopsSafeToAlignWith = (buffer, currentTime, mapping) => {
- if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {
- return [];
- } // pts value for current time + 3 seconds to give a bit more wiggle room
-
- const currentTimePts = Math.ceil((currentTime - mapping + 3) * clock_1);
- let i;
- for (i = 0; i < buffer.length; i++) {
- if (buffer[i].pts > currentTimePts) {
- break;
- }
- }
- return buffer.slice(i);
- };
- /**
- * Appends gop information (timing and byteLength) received by the transmuxer for the
- * gops appended in the last call to appendBuffer
- *
- * @param {Array} buffer
- * The current buffer of gop information
- * @param {Array} gops
- * List of new gop information
- * @param {boolean} replace
- * If true, replace the buffer with the new gop information. If false, append the
- * new gop information to the buffer in the right location of time.
- * @return {Array}
- * Updated list of gop information
- */
-
- const updateGopBuffer = (buffer, gops, replace) => {
- if (!gops.length) {
- return buffer;
- }
- if (replace) {
- // If we are in safe append mode, then completely overwrite the gop buffer
- // with the most recent appeneded data. This will make sure that when appending
- // future segments, we only try to align with gops that are both ahead of current
- // time and in the last segment appended.
- return gops.slice();
- }
- const start = gops[0].pts;
- let i = 0;
- for (i; i < buffer.length; i++) {
- if (buffer[i].pts >= start) {
- break;
- }
- }
- return buffer.slice(0, i).concat(gops);
- };
- /**
- * Removes gop information in buffer that overlaps with provided start and end
- *
- * @param {Array} buffer
- * The current buffer of gop information
- * @param {Double} start
- * position to start the remove at
- * @param {Double} end
- * position to end the remove at
- * @param {Double} mapping
- * Offset to map display time to stream presentation time
- */
-
- const removeGopBuffer = (buffer, start, end, mapping) => {
- const startPts = Math.ceil((start - mapping) * clock_1);
- const endPts = Math.ceil((end - mapping) * clock_1);
- const updatedBuffer = buffer.slice();
- let i = buffer.length;
- while (i--) {
- if (buffer[i].pts <= endPts) {
- break;
- }
- }
- if (i === -1) {
- // no removal because end of remove range is before start of buffer
- return updatedBuffer;
- }
- let j = i + 1;
- while (j--) {
- if (buffer[j].pts <= startPts) {
- break;
- }
- } // clamp remove range start to 0 index
-
- j = Math.max(j, 0);
- updatedBuffer.splice(j, i - j + 1);
- return updatedBuffer;
- };
- const shallowEqual = function (a, b) {
- // if both are undefined
- // or one or the other is undefined
- // they are not equal
- if (!a && !b || !a && b || a && !b) {
- return false;
- } // they are the same object and thus, equal
-
- if (a === b) {
- return true;
- } // sort keys so we can make sure they have
- // all the same keys later.
-
- const akeys = Object.keys(a).sort();
- const bkeys = Object.keys(b).sort(); // different number of keys, not equal
-
- if (akeys.length !== bkeys.length) {
- return false;
- }
- for (let i = 0; i < akeys.length; i++) {
- const key = akeys[i]; // different sorted keys, not equal
-
- if (key !== bkeys[i]) {
- return false;
- } // different values, not equal
-
- if (a[key] !== b[key]) {
- return false;
- }
- }
- return true;
- };
-
- // https://www.w3.org/TR/WebIDL-1/#quotaexceedederror
- const QUOTA_EXCEEDED_ERR = 22;
-
- /**
- * The segment loader has no recourse except to fetch a segment in the
- * current playlist and use the internal timestamps in that segment to
- * generate a syncPoint. This function returns a good candidate index
- * for that process.
- *
- * @param {Array} segments - the segments array from a playlist.
- * @return {number} An index of a segment from the playlist to load
- */
-
- const getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {
- segments = segments || [];
- const timelineSegments = [];
- let time = 0;
- for (let i = 0; i < segments.length; i++) {
- const segment = segments[i];
- if (currentTimeline === segment.timeline) {
- timelineSegments.push(i);
- time += segment.duration;
- if (time > targetTime) {
- return i;
- }
- }
- }
- if (timelineSegments.length === 0) {
- return 0;
- } // default to the last timeline segment
-
- return timelineSegments[timelineSegments.length - 1];
- }; // In the event of a quota exceeded error, keep at least one second of back buffer. This
- // number was arbitrarily chosen and may be updated in the future, but seemed reasonable
- // as a start to prevent any potential issues with removing content too close to the
- // playhead.
-
- const MIN_BACK_BUFFER = 1; // in ms
-
- const CHECK_BUFFER_DELAY = 500;
- const finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half
- // frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will
- // not accurately reflect the rest of the content.
-
- const MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;
- const illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {
- // Although these checks should most likely cover non 'main' types, for now it narrows
- // the scope of our checks.
- if (loaderType !== 'main' || !startingMedia || !trackInfo) {
- return null;
- }
- if (!trackInfo.hasAudio && !trackInfo.hasVideo) {
- return 'Neither audio nor video found in segment.';
- }
- if (startingMedia.hasVideo && !trackInfo.hasVideo) {
- return 'Only audio found in segment when we expected video.' + ' We can\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';
- }
- if (!startingMedia.hasVideo && trackInfo.hasVideo) {
- return 'Video found in segment when we expected only audio.' + ' We can\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';
- }
- return null;
- };
- /**
- * Calculates a time value that is safe to remove from the back buffer without interrupting
- * playback.
- *
- * @param {TimeRange} seekable
- * The current seekable range
- * @param {number} currentTime
- * The current time of the player
- * @param {number} targetDuration
- * The target duration of the current playlist
- * @return {number}
- * Time that is safe to remove from the back buffer without interrupting playback
- */
-
- const safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {
- // 30 seconds before the playhead provides a safe default for trimming.
- //
- // Choosing a reasonable default is particularly important for high bitrate content and
- // VOD videos/live streams with large windows, as the buffer may end up overfilled and
- // throw an APPEND_BUFFER_ERR.
- let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;
- if (seekable.length) {
- // Some live playlists may have a shorter window of content than the full allowed back
- // buffer. For these playlists, don't save content that's no longer within the window.
- trimTime = Math.max(trimTime, seekable.start(0));
- } // Don't remove within target duration of the current time to avoid the possibility of
- // removing the GOP currently being played, as removing it can cause playback stalls.
-
- const maxTrimTime = currentTime - targetDuration;
- return Math.min(maxTrimTime, trimTime);
- };
- const segmentInfoString = segmentInfo => {
- const {
- startOfSegment,
- duration,
- segment,
- part,
- playlist: {
- mediaSequence: seq,
- id,
- segments = []
- },
- mediaIndex: index,
- partIndex,
- timeline
- } = segmentInfo;
- const segmentLen = segments.length - 1;
- let selection = 'mediaIndex/partIndex increment';
- if (segmentInfo.getMediaInfoForTime) {
- selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;
- } else if (segmentInfo.isSyncRequest) {
- selection = 'getSyncSegmentCandidate (isSyncRequest)';
- }
- if (segmentInfo.independent) {
- selection += ` with independent ${segmentInfo.independent}`;
- }
- const hasPartIndex = typeof partIndex === 'number';
- const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';
- const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({
- preloadSegment: segment
- }) - 1 : 0;
- return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;
- };
- const timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;
- /**
- * Returns the timestamp offset to use for the segment.
- *
- * @param {number} segmentTimeline
- * The timeline of the segment
- * @param {number} currentTimeline
- * The timeline currently being followed by the loader
- * @param {number} startOfSegment
- * The estimated segment start
- * @param {TimeRange[]} buffered
- * The loader's buffer
- * @param {boolean} overrideCheck
- * If true, no checks are made to see if the timestamp offset value should be set,
- * but sets it directly to a value.
- *
- * @return {number|null}
- * Either a number representing a new timestamp offset, or null if the segment is
- * part of the same timeline
- */
-
- const timestampOffsetForSegment = ({
- segmentTimeline,
- currentTimeline,
- startOfSegment,
- buffered,
- overrideCheck
- }) => {
- // Check to see if we are crossing a discontinuity to see if we need to set the
- // timestamp offset on the transmuxer and source buffer.
- //
- // Previously, we changed the timestampOffset if the start of this segment was less than
- // the currently set timestampOffset, but this isn't desirable as it can produce bad
- // behavior, especially around long running live streams.
- if (!overrideCheck && segmentTimeline === currentTimeline) {
- return null;
- } // When changing renditions, it's possible to request a segment on an older timeline. For
- // instance, given two renditions with the following:
- //
- // #EXTINF:10
- // segment1
- // #EXT-X-DISCONTINUITY
- // #EXTINF:10
- // segment2
- // #EXTINF:10
- // segment3
- //
- // And the current player state:
- //
- // current time: 8
- // buffer: 0 => 20
- //
- // The next segment on the current rendition would be segment3, filling the buffer from
- // 20s onwards. However, if a rendition switch happens after segment2 was requested,
- // then the next segment to be requested will be segment1 from the new rendition in
- // order to fill time 8 and onwards. Using the buffered end would result in repeated
- // content (since it would position segment1 of the new rendition starting at 20s). This
- // case can be identified when the new segment's timeline is a prior value. Instead of
- // using the buffered end, the startOfSegment can be used, which, hopefully, will be
- // more accurate to the actual start time of the segment.
-
- if (segmentTimeline < currentTimeline) {
- return startOfSegment;
- } // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that
- // value uses the end of the last segment if it is available. While this value
- // should often be correct, it's better to rely on the buffered end, as the new
- // content post discontinuity should line up with the buffered end as if it were
- // time 0 for the new content.
-
- return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;
- };
- /**
- * Returns whether or not the loader should wait for a timeline change from the timeline
- * change controller before processing the segment.
- *
- * Primary timing in VHS goes by video. This is different from most media players, as
- * audio is more often used as the primary timing source. For the foreseeable future, VHS
- * will continue to use video as the primary timing source, due to the current logic and
- * expectations built around it.
-
- * Since the timing follows video, in order to maintain sync, the video loader is
- * responsible for setting both audio and video source buffer timestamp offsets.
- *
- * Setting different values for audio and video source buffers could lead to
- * desyncing. The following examples demonstrate some of the situations where this
- * distinction is important. Note that all of these cases involve demuxed content. When
- * content is muxed, the audio and video are packaged together, therefore syncing
- * separate media playlists is not an issue.
- *
- * CASE 1: Audio prepares to load a new timeline before video:
- *
- * Timeline: 0 1
- * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Audio Loader: ^
- * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Video Loader ^
- *
- * In the above example, the audio loader is preparing to load the 6th segment, the first
- * after a discontinuity, while the video loader is still loading the 5th segment, before
- * the discontinuity.
- *
- * If the audio loader goes ahead and loads and appends the 6th segment before the video
- * loader crosses the discontinuity, then when appended, the 6th audio segment will use
- * the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,
- * the audio loader must provide the audioAppendStart value to trim the content in the
- * transmuxer, and that value relies on the audio timestamp offset. Since the audio
- * timestamp offset is set by the video (main) loader, the audio loader shouldn't load the
- * segment until that value is provided.
- *
- * CASE 2: Video prepares to load a new timeline before audio:
- *
- * Timeline: 0 1
- * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Audio Loader: ^
- * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Video Loader ^
- *
- * In the above example, the video loader is preparing to load the 6th segment, the first
- * after a discontinuity, while the audio loader is still loading the 5th segment, before
- * the discontinuity.
- *
- * If the video loader goes ahead and loads and appends the 6th segment, then once the
- * segment is loaded and processed, both the video and audio timestamp offsets will be
- * set, since video is used as the primary timing source. This is to ensure content lines
- * up appropriately, as any modifications to the video timing are reflected by audio when
- * the video loader sets the audio and video timestamp offsets to the same value. However,
- * setting the timestamp offset for audio before audio has had a chance to change
- * timelines will likely lead to desyncing, as the audio loader will append segment 5 with
- * a timestamp intended to apply to segments from timeline 1 rather than timeline 0.
- *
- * CASE 3: When seeking, audio prepares to load a new timeline before video
- *
- * Timeline: 0 1
- * Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Audio Loader: ^
- * Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
- * Video Loader ^
- *
- * In the above example, both audio and video loaders are loading segments from timeline
- * 0, but imagine that the seek originated from timeline 1.
- *
- * When seeking to a new timeline, the timestamp offset will be set based on the expected
- * segment start of the loaded video segment. In order to maintain sync, the audio loader
- * must wait for the video loader to load its segment and update both the audio and video
- * timestamp offsets before it may load and append its own segment. This is the case
- * whether the seek results in a mismatched segment request (e.g., the audio loader
- * chooses to load segment 3 and the video loader chooses to load segment 4) or the
- * loaders choose to load the same segment index from each playlist, as the segments may
- * not be aligned perfectly, even for matching segment indexes.
- *
- * @param {Object} timelinechangeController
- * @param {number} currentTimeline
- * The timeline currently being followed by the loader
- * @param {number} segmentTimeline
- * The timeline of the segment being loaded
- * @param {('main'|'audio')} loaderType
- * The loader type
- * @param {boolean} audioDisabled
- * Whether the audio is disabled for the loader. This should only be true when the
- * loader may have muxed audio in its segment, but should not append it, e.g., for
- * the main loader when an alternate audio playlist is active.
- *
- * @return {boolean}
- * Whether the loader should wait for a timeline change from the timeline change
- * controller before processing the segment
- */
-
- const shouldWaitForTimelineChange = ({
- timelineChangeController,
- currentTimeline,
- segmentTimeline,
- loaderType,
- audioDisabled
- }) => {
- if (currentTimeline === segmentTimeline) {
- return false;
- }
- if (loaderType === 'audio') {
- const lastMainTimelineChange = timelineChangeController.lastTimelineChange({
- type: 'main'
- }); // Audio loader should wait if:
- //
- // * main hasn't had a timeline change yet (thus has not loaded its first segment)
- // * main hasn't yet changed to the timeline audio is looking to load
-
- return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;
- } // The main loader only needs to wait for timeline changes if there's demuxed audio.
- // Otherwise, there's nothing to wait for, since audio would be muxed into the main
- // loader's segments (or the content is audio/video only and handled by the main
- // loader).
-
- if (loaderType === 'main' && audioDisabled) {
- const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({
- type: 'audio'
- }); // Main loader should wait for the audio loader if audio is not pending a timeline
- // change to the current timeline.
- //
- // Since the main loader is responsible for setting the timestamp offset for both
- // audio and video, the main loader must wait for audio to be about to change to its
- // timeline before setting the offset, otherwise, if audio is behind in loading,
- // segments from the previous timeline would be adjusted by the new timestamp offset.
- //
- // This requirement means that video will not cross a timeline until the audio is
- // about to cross to it, so that way audio and video will always cross the timeline
- // together.
- //
- // In addition to normal timeline changes, these rules also apply to the start of a
- // stream (going from a non-existent timeline, -1, to timeline 0). It's important
- // that these rules apply to the first timeline change because if they did not, it's
- // possible that the main loader will cross two timelines before the audio loader has
- // crossed one. Logic may be implemented to handle the startup as a special case, but
- // it's easier to simply treat all timeline changes the same.
-
- if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {
- return false;
- }
- return true;
- }
- return false;
- };
- const mediaDuration = timingInfos => {
- let maxDuration = 0;
- ['video', 'audio'].forEach(function (type) {
- const typeTimingInfo = timingInfos[`${type}TimingInfo`];
- if (!typeTimingInfo) {
- return;
- }
- const {
- start,
- end
- } = typeTimingInfo;
- let duration;
- if (typeof start === 'bigint' || typeof end === 'bigint') {
- duration = window.BigInt(end) - window.BigInt(start);
- } else if (typeof start === 'number' && typeof end === 'number') {
- duration = end - start;
- }
- if (typeof duration !== 'undefined' && duration > maxDuration) {
- maxDuration = duration;
- }
- }); // convert back to a number if it is lower than MAX_SAFE_INTEGER
- // as we only need BigInt when we are above that.
-
- if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {
- maxDuration = Number(maxDuration);
- }
- return maxDuration;
- };
- const segmentTooLong = ({
- segmentDuration,
- maxDuration
- }) => {
- // 0 duration segments are most likely due to metadata only segments or a lack of
- // information.
- if (!segmentDuration) {
- return false;
- } // For HLS:
- //
- // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1
- // The EXTINF duration of each Media Segment in the Playlist
- // file, when rounded to the nearest integer, MUST be less than or equal
- // to the target duration; longer segments can trigger playback stalls
- // or other errors.
- //
- // For DASH, the mpd-parser uses the largest reported segment duration as the target
- // duration. Although that reported duration is occasionally approximate (i.e., not
- // exact), a strict check may report that a segment is too long more often in DASH.
-
- return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;
- };
- const getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {
- // Right now we aren't following DASH's timing model exactly, so only perform
- // this check for HLS content.
- if (sourceType !== 'hls') {
- return null;
- }
- const segmentDuration = mediaDuration({
- audioTimingInfo: segmentInfo.audioTimingInfo,
- videoTimingInfo: segmentInfo.videoTimingInfo
- }); // Don't report if we lack information.
- //
- // If the segment has a duration of 0 it is either a lack of information or a
- // metadata only segment and shouldn't be reported here.
-
- if (!segmentDuration) {
- return null;
- }
- const targetDuration = segmentInfo.playlist.targetDuration;
- const isSegmentWayTooLong = segmentTooLong({
- segmentDuration,
- maxDuration: targetDuration * 2
- });
- const isSegmentSlightlyTooLong = segmentTooLong({
- segmentDuration,
- maxDuration: targetDuration
- });
- const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';
- if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {
- return {
- severity: isSegmentWayTooLong ? 'warn' : 'info',
- message: segmentTooLongMessage
- };
- }
- return null;
- };
- /**
- * An object that manages segment loading and appending.
- *
- * @class SegmentLoader
- * @param {Object} options required and optional options
- * @extends videojs.EventTarget
- */
-
- class SegmentLoader extends videojs.EventTarget {
- constructor(settings, options = {}) {
- super(); // check pre-conditions
-
- if (!settings) {
- throw new TypeError('Initialization settings are required');
- }
- if (typeof settings.currentTime !== 'function') {
- throw new TypeError('No currentTime getter specified');
- }
- if (!settings.mediaSource) {
- throw new TypeError('No MediaSource specified');
- } // public properties
-
- this.bandwidth = settings.bandwidth;
- this.throughput = {
- rate: 0,
- count: 0
- };
- this.roundTrip = NaN;
- this.resetStats_();
- this.mediaIndex = null;
- this.partIndex = null; // private settings
-
- this.hasPlayed_ = settings.hasPlayed;
- this.currentTime_ = settings.currentTime;
- this.seekable_ = settings.seekable;
- this.seeking_ = settings.seeking;
- this.duration_ = settings.duration;
- this.mediaSource_ = settings.mediaSource;
- this.vhs_ = settings.vhs;
- this.loaderType_ = settings.loaderType;
- this.currentMediaInfo_ = void 0;
- this.startingMediaInfo_ = void 0;
- this.segmentMetadataTrack_ = settings.segmentMetadataTrack;
- this.goalBufferLength_ = settings.goalBufferLength;
- this.sourceType_ = settings.sourceType;
- this.sourceUpdater_ = settings.sourceUpdater;
- this.inbandTextTracks_ = settings.inbandTextTracks;
- this.state_ = 'INIT';
- this.timelineChangeController_ = settings.timelineChangeController;
- this.shouldSaveSegmentTimingInfo_ = true;
- this.parse708captions_ = settings.parse708captions;
- this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;
- this.captionServices_ = settings.captionServices;
- this.exactManifestTimings = settings.exactManifestTimings;
- this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables
-
- this.checkBufferTimeout_ = null;
- this.error_ = void 0;
- this.currentTimeline_ = -1;
- this.shouldForceTimestampOffsetAfterResync_ = false;
- this.pendingSegment_ = null;
- this.xhrOptions_ = null;
- this.pendingSegments_ = [];
- this.audioDisabled_ = false;
- this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller
-
- this.gopBuffer_ = [];
- this.timeMapping_ = 0;
- this.safeAppend_ = false;
- this.appendInitSegment_ = {
- audio: true,
- video: true
- };
- this.playlistOfLastInitSegment_ = {
- audio: null,
- video: null
- };
- this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough
- // information yet to start the loading process (e.g., if the audio loader wants to
- // load a segment from the next timeline but the main loader hasn't yet crossed that
- // timeline), then the load call will be added to the queue until it is ready to be
- // processed.
-
- this.loadQueue_ = [];
- this.metadataQueue_ = {
- id3: [],
- caption: []
- };
- this.waitingOnRemove_ = false;
- this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback
-
- this.activeInitSegmentId_ = null;
- this.initSegments_ = {}; // HLSe playback
-
- this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;
- this.keyCache_ = {};
- this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings
- // between a time in the display time and a segment index within
- // a playlist
-
- this.syncController_ = settings.syncController;
- this.syncPoint_ = {
- segmentIndex: 0,
- time: 0
- };
- this.transmuxer_ = this.createTransmuxer_();
- this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');
- this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);
- this.mediaSource_.addEventListener('sourceopen', () => {
- if (!this.isEndOfStream_()) {
- this.ended_ = false;
- }
- }); // ...for determining the fetch location
-
- this.fetchAtBuffer_ = false;
- this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);
- Object.defineProperty(this, 'state', {
- get() {
- return this.state_;
- },
- set(newState) {
- if (newState !== this.state_) {
- this.logger_(`${this.state_} -> ${newState}`);
- this.state_ = newState;
- this.trigger('statechange');
- }
- }
- });
- this.sourceUpdater_.on('ready', () => {
- if (this.hasEnoughInfoToAppend_()) {
- this.processCallQueue_();
- }
- }); // Only the main loader needs to listen for pending timeline changes, as the main
- // loader should wait for audio to be ready to change its timeline so that both main
- // and audio timelines change together. For more details, see the
- // shouldWaitForTimelineChange function.
-
- if (this.loaderType_ === 'main') {
- this.timelineChangeController_.on('pendingtimelinechange', () => {
- if (this.hasEnoughInfoToAppend_()) {
- this.processCallQueue_();
- }
- });
- } // The main loader only listens on pending timeline changes, but the audio loader,
- // since its loads follow main, needs to listen on timeline changes. For more details,
- // see the shouldWaitForTimelineChange function.
-
- if (this.loaderType_ === 'audio') {
- this.timelineChangeController_.on('timelinechange', () => {
- if (this.hasEnoughInfoToLoad_()) {
- this.processLoadQueue_();
- }
- if (this.hasEnoughInfoToAppend_()) {
- this.processCallQueue_();
- }
- });
- }
- }
- /**
- * TODO: Current sync controller consists of many hls-specific strategies
- * media sequence sync is also hls-specific, and we would like to be protocol-agnostic on this level
- * this should be a part of the sync-controller and sync controller should expect different strategy list based on the protocol.
- *
- * @return {MediaSequenceSync|null}
- * @private
- */
-
- get mediaSequenceSync_() {
- return this.syncController_.getMediaSequenceSync(this.loaderType_);
- }
- createTransmuxer_() {
- return segmentTransmuxer.createTransmuxer({
- remux: false,
- alignGopsAtEnd: this.safeAppend_,
- keepOriginalTimestamps: true,
- parse708captions: this.parse708captions_,
- captionServices: this.captionServices_
- });
- }
- /**
- * reset all of our media stats
- *
- * @private
- */
-
- resetStats_() {
- this.mediaBytesTransferred = 0;
- this.mediaRequests = 0;
- this.mediaRequestsAborted = 0;
- this.mediaRequestsTimedout = 0;
- this.mediaRequestsErrored = 0;
- this.mediaTransferDuration = 0;
- this.mediaSecondsLoaded = 0;
- this.mediaAppends = 0;
- }
- /**
- * dispose of the SegmentLoader and reset to the default state
- */
-
- dispose() {
- this.trigger('dispose');
- this.state = 'DISPOSED';
- this.pause();
- this.abort_();
- if (this.transmuxer_) {
- this.transmuxer_.terminate();
- }
- this.resetStats_();
- if (this.checkBufferTimeout_) {
- window.clearTimeout(this.checkBufferTimeout_);
- }
- if (this.syncController_ && this.triggerSyncInfoUpdate_) {
- this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);
- }
- this.off();
- }
- setAudio(enable) {
- this.audioDisabled_ = !enable;
- if (enable) {
- this.appendInitSegment_.audio = true;
- } else {
- // remove current track audio if it gets disabled
- this.sourceUpdater_.removeAudio(0, this.duration_());
- }
- }
- /**
- * abort anything that is currently doing on with the SegmentLoader
- * and reset to a default state
- */
-
- abort() {
- if (this.state !== 'WAITING') {
- if (this.pendingSegment_) {
- this.pendingSegment_ = null;
- }
- return;
- }
- this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY
- // since we are no longer "waiting" on any requests. XHR callback is not always run
- // when the request is aborted. This will prevent the loader from being stuck in the
- // WAITING state indefinitely.
-
- this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the
- // next segment
-
- if (!this.paused()) {
- this.monitorBuffer_();
- }
- }
- /**
- * abort all pending xhr requests and null any pending segements
- *
- * @private
- */
-
- abort_() {
- if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {
- this.pendingSegment_.abortRequests();
- } // clear out the segment being processed
-
- this.pendingSegment_ = null;
- this.callQueue_ = [];
- this.loadQueue_ = [];
- this.metadataQueue_.id3 = [];
- this.metadataQueue_.caption = [];
- this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);
- this.waitingOnRemove_ = false;
- window.clearTimeout(this.quotaExceededErrorRetryTimeout_);
- this.quotaExceededErrorRetryTimeout_ = null;
- }
- checkForAbort_(requestId) {
- // If the state is APPENDING, then aborts will not modify the state, meaning the first
- // callback that happens should reset the state to READY so that loading can continue.
- if (this.state === 'APPENDING' && !this.pendingSegment_) {
- this.state = 'READY';
- return true;
- }
- if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {
- return true;
- }
- return false;
- }
- /**
- * set an error on the segment loader and null out any pending segements
- *
- * @param {Error} error the error to set on the SegmentLoader
- * @return {Error} the error that was set or that is currently set
- */
-
- error(error) {
- if (typeof error !== 'undefined') {
- this.logger_('error occurred:', error);
- this.error_ = error;
- }
- this.pendingSegment_ = null;
- return this.error_;
- }
- endOfStream() {
- this.ended_ = true;
- if (this.transmuxer_) {
- // need to clear out any cached data to prepare for the new segment
- segmentTransmuxer.reset(this.transmuxer_);
- }
- this.gopBuffer_.length = 0;
- this.pause();
- this.trigger('ended');
- }
- /**
- * Indicates which time ranges are buffered
- *
- * @return {TimeRange}
- * TimeRange object representing the current buffered ranges
- */
-
- buffered_() {
- const trackInfo = this.getMediaInfo_();
- if (!this.sourceUpdater_ || !trackInfo) {
- return createTimeRanges();
- }
- if (this.loaderType_ === 'main') {
- const {
- hasAudio,
- hasVideo,
- isMuxed
- } = trackInfo;
- if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {
- return this.sourceUpdater_.buffered();
- }
- if (hasVideo) {
- return this.sourceUpdater_.videoBuffered();
- }
- } // One case that can be ignored for now is audio only with alt audio,
- // as we don't yet have proper support for that.
-
- return this.sourceUpdater_.audioBuffered();
- }
- /**
- * Gets and sets init segment for the provided map
- *
- * @param {Object} map
- * The map object representing the init segment to get or set
- * @param {boolean=} set
- * If true, the init segment for the provided map should be saved
- * @return {Object}
- * map object for desired init segment
- */
-
- initSegmentForMap(map, set = false) {
- if (!map) {
- return null;
- }
- const id = initSegmentId(map);
- let storedMap = this.initSegments_[id];
- if (set && !storedMap && map.bytes) {
- this.initSegments_[id] = storedMap = {
- resolvedUri: map.resolvedUri,
- byterange: map.byterange,
- bytes: map.bytes,
- tracks: map.tracks,
- timescales: map.timescales
- };
- }
- return storedMap || map;
- }
- /**
- * Gets and sets key for the provided key
- *
- * @param {Object} key
- * The key object representing the key to get or set
- * @param {boolean=} set
- * If true, the key for the provided key should be saved
- * @return {Object}
- * Key object for desired key
- */
-
- segmentKey(key, set = false) {
- if (!key) {
- return null;
- }
- const id = segmentKeyId(key);
- let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per
- // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3
-
- if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {
- this.keyCache_[id] = storedKey = {
- resolvedUri: key.resolvedUri,
- bytes: key.bytes
- };
- }
- const result = {
- resolvedUri: (storedKey || key).resolvedUri
- };
- if (storedKey) {
- result.bytes = storedKey.bytes;
- }
- return result;
- }
- /**
- * Returns true if all configuration required for loading is present, otherwise false.
- *
- * @return {boolean} True if the all configuration is ready for loading
- * @private
- */
-
- couldBeginLoading_() {
- return this.playlist_ && !this.paused();
- }
- /**
- * load a playlist and start to fill the buffer
- */
-
- load() {
- // un-pause
- this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be
- // specified
-
- if (!this.playlist_) {
- return;
- } // if all the configuration is ready, initialize and begin loading
-
- if (this.state === 'INIT' && this.couldBeginLoading_()) {
- return this.init_();
- } // if we're in the middle of processing a segment already, don't
- // kick off an additional segment request
-
- if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {
- return;
- }
- this.state = 'READY';
- }
- /**
- * Once all the starting parameters have been specified, begin
- * operation. This method should only be invoked from the INIT
- * state.
- *
- * @private
- */
-
- init_() {
- this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old
- // audio data from the muxed content should be removed
-
- this.resetEverything();
- return this.monitorBuffer_();
- }
- /**
- * set a playlist on the segment loader
- *
- * @param {PlaylistLoader} media the playlist to set on the segment loader
- */
-
- playlist(newPlaylist, options = {}) {
- if (!newPlaylist) {
- return;
- }
- const oldPlaylist = this.playlist_;
- const segmentInfo = this.pendingSegment_;
- this.playlist_ = newPlaylist;
- this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist
- // is always our zero-time so force a sync update each time the playlist
- // is refreshed from the server
- //
- // Use the INIT state to determine if playback has started, as the playlist sync info
- // should be fixed once requests begin (as sync points are generated based on sync
- // info), but not before then.
-
- if (this.state === 'INIT') {
- newPlaylist.syncInfo = {
- mediaSequence: newPlaylist.mediaSequence,
- time: 0
- }; // Setting the date time mapping means mapping the program date time (if available)
- // to time 0 on the player's timeline. The playlist's syncInfo serves a similar
- // purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can
- // be updated as the playlist is refreshed before the loader starts loading, the
- // program date time mapping needs to be updated as well.
- //
- // This mapping is only done for the main loader because a program date time should
- // map equivalently between playlists.
-
- if (this.loaderType_ === 'main') {
- this.syncController_.setDateTimeMappingForStart(newPlaylist);
- }
- }
- let oldId = null;
- if (oldPlaylist) {
- if (oldPlaylist.id) {
- oldId = oldPlaylist.id;
- } else if (oldPlaylist.uri) {
- oldId = oldPlaylist.uri;
- }
- }
- this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`);
- if (this.mediaSequenceSync_) {
- this.mediaSequenceSync_.update(newPlaylist, this.currentTime_());
- this.logger_(`Playlist update:
-currentTime: ${this.currentTime_()}
-bufferedEnd: ${lastBufferedEnd(this.buffered_())}
-`, this.mediaSequenceSync_.diagnostics);
- } // in VOD, this is always a rendition switch (or we updated our syncInfo above)
- // in LIVE, we always want to update with new playlists (including refreshes)
-
- this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start
- // buffering now
-
- if (this.state === 'INIT' && this.couldBeginLoading_()) {
- return this.init_();
- }
- if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {
- if (this.mediaIndex !== null) {
- // we must reset/resync the segment loader when we switch renditions and
- // the segment loader is already synced to the previous rendition
- // We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_
- // to false, resulting in fetching segments at currentTime and causing repeated
- // same-segment requests on playlist change. This erroneously drives up the playback watcher
- // stalled segment count, as re-requesting segments at the currentTime or browser cached segments
- // will not change the buffer.
- // Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201
- const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';
- if (isLLHLS) {
- this.resetLoader();
- } else {
- this.resyncLoader();
- }
- }
- this.currentMediaInfo_ = void 0;
- this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined
-
- return;
- } // we reloaded the same playlist so we are in a live scenario
- // and we will likely need to adjust the mediaIndex
-
- const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;
- this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader
- // this is important because we can abort a request and this value must be
- // equal to the last appended mediaIndex
-
- if (this.mediaIndex !== null) {
- this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist
- // update during that. mediaIndex would go from 0 to -1 if mediaSequence in the
- // new playlist was incremented by 1.
-
- if (this.mediaIndex < 0) {
- this.mediaIndex = null;
- this.partIndex = null;
- } else {
- const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment
- // unless parts fell off of the playlist for this segment.
- // In that case we need to reset partIndex and resync
-
- if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {
- const mediaIndex = this.mediaIndex;
- this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);
- this.resetLoader(); // We want to throw away the partIndex and the data associated with it,
- // as the part was dropped from our current playlists segment.
- // The mediaIndex will still be valid so keep that around.
-
- this.mediaIndex = mediaIndex;
- }
- }
- } // update the mediaIndex on the SegmentInfo object
- // this is important because we will update this.mediaIndex with this value
- // in `handleAppendsDone_` after the segment has been successfully appended
-
- if (segmentInfo) {
- segmentInfo.mediaIndex -= mediaSequenceDiff;
- if (segmentInfo.mediaIndex < 0) {
- segmentInfo.mediaIndex = null;
- segmentInfo.partIndex = null;
- } else {
- // we need to update the referenced segment so that timing information is
- // saved for the new playlist's segment, however, if the segment fell off the
- // playlist, we can leave the old reference and just lose the timing info
- if (segmentInfo.mediaIndex >= 0) {
- segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];
- }
- if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {
- segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];
- }
- }
- }
- this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);
- }
- /**
- * Prevent the loader from fetching additional segments. If there
- * is a segment request outstanding, it will finish processing
- * before the loader halts. A segment loader can be unpaused by
- * calling load().
- */
-
- pause() {
- if (this.checkBufferTimeout_) {
- window.clearTimeout(this.checkBufferTimeout_);
- this.checkBufferTimeout_ = null;
- }
- }
- /**
- * Returns whether the segment loader is fetching additional
- * segments when given the opportunity. This property can be
- * modified through calls to pause() and load().
- */
-
- paused() {
- return this.checkBufferTimeout_ === null;
- }
- /**
- * Delete all the buffered data and reset the SegmentLoader
- *
- * @param {Function} [done] an optional callback to be executed when the remove
- * operation is complete
- */
-
- resetEverything(done) {
- this.ended_ = false;
- this.activeInitSegmentId_ = null;
- this.appendInitSegment_ = {
- audio: true,
- video: true
- };
- this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.
- // VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,
- // we then clamp the value to duration if necessary.
-
- this.remove(0, Infinity, done); // clears fmp4 captions
-
- if (this.transmuxer_) {
- this.transmuxer_.postMessage({
- action: 'clearAllMp4Captions'
- }); // reset the cache in the transmuxer
-
- this.transmuxer_.postMessage({
- action: 'reset'
- });
- }
- }
- /**
- * Force the SegmentLoader to resync and start loading around the currentTime instead
- * of starting at the end of the buffer
- *
- * Useful for fast quality changes
- */
-
- resetLoader() {
- this.fetchAtBuffer_ = false;
- if (this.mediaSequenceSync_) {
- this.mediaSequenceSync_.resetAppendedStatus();
- }
- this.resyncLoader();
- }
- /**
- * Force the SegmentLoader to restart synchronization and make a conservative guess
- * before returning to the simple walk-forward method
- */
-
- resyncLoader() {
- if (this.transmuxer_) {
- // need to clear out any cached data to prepare for the new segment
- segmentTransmuxer.reset(this.transmuxer_);
- }
- this.mediaIndex = null;
- this.partIndex = null;
- this.syncPoint_ = null;
- this.isPendingTimestampOffset_ = false; // this is mainly to sync timing-info when switching between renditions with and without timestamp-rollover,
- // so we don't want it for DASH or fragmented mp4 segments.
-
- const isFmp4 = this.currentMediaInfo_ && this.currentMediaInfo_.isFmp4;
- const isHlsTs = this.sourceType_ === 'hls' && !isFmp4;
- if (isHlsTs) {
- this.shouldForceTimestampOffsetAfterResync_ = true;
- }
- this.callQueue_ = [];
- this.loadQueue_ = [];
- this.metadataQueue_.id3 = [];
- this.metadataQueue_.caption = [];
- this.abort();
- if (this.transmuxer_) {
- this.transmuxer_.postMessage({
- action: 'clearParsedMp4Captions'
- });
- }
- }
- /**
- * Remove any data in the source buffer between start and end times
- *
- * @param {number} start - the start time of the region to remove from the buffer
- * @param {number} end - the end time of the region to remove from the buffer
- * @param {Function} [done] - an optional callback to be executed when the remove
- * @param {boolean} force - force all remove operations to happen
- * operation is complete
- */
-
- remove(start, end, done = () => {}, force = false) {
- // clamp end to duration if we need to remove everything.
- // This is due to a browser bug that causes issues if we remove to Infinity.
- // videojs/videojs-contrib-hls#1225
- if (end === Infinity) {
- end = this.duration_();
- } // skip removes that would throw an error
- // commonly happens during a rendition switch at the start of a video
- // from start 0 to end 0
-
- if (end <= start) {
- this.logger_('skipping remove because end ${end} is <= start ${start}');
- return;
- }
- if (!this.sourceUpdater_ || !this.getMediaInfo_()) {
- this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media
-
- return;
- } // set it to one to complete this function's removes
-
- let removesRemaining = 1;
- const removeFinished = () => {
- removesRemaining--;
- if (removesRemaining === 0) {
- done();
- }
- };
- if (force || !this.audioDisabled_) {
- removesRemaining++;
- this.sourceUpdater_.removeAudio(start, end, removeFinished);
- } // While it would be better to only remove video if the main loader has video, this
- // should be safe with audio only as removeVideo will call back even if there's no
- // video buffer.
- //
- // In theory we can check to see if there's video before calling the remove, but in
- // the event that we're switching between renditions and from video to audio only
- // (when we add support for that), we may need to clear the video contents despite
- // what the new media will contain.
-
- if (force || this.loaderType_ === 'main') {
- this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);
- removesRemaining++;
- this.sourceUpdater_.removeVideo(start, end, removeFinished);
- } // remove any captions and ID3 tags
-
- for (const track in this.inbandTextTracks_) {
- removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);
- }
- removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes
-
- removeFinished();
- }
- /**
- * (re-)schedule monitorBufferTick_ to run as soon as possible
- *
- * @private
- */
-
- monitorBuffer_() {
- if (this.checkBufferTimeout_) {
- window.clearTimeout(this.checkBufferTimeout_);
- }
- this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), 1);
- }
- /**
- * As long as the SegmentLoader is in the READY state, periodically
- * invoke fillBuffer_().
- *
- * @private
- */
-
- monitorBufferTick_() {
- if (this.state === 'READY') {
- this.fillBuffer_();
- }
- if (this.checkBufferTimeout_) {
- window.clearTimeout(this.checkBufferTimeout_);
- }
- this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);
- }
- /**
- * fill the buffer with segements unless the sourceBuffers are
- * currently updating
- *
- * Note: this function should only ever be called by monitorBuffer_
- * and never directly
- *
- * @private
- */
-
- fillBuffer_() {
- // TODO since the source buffer maintains a queue, and we shouldn't call this function
- // except when we're ready for the next segment, this check can most likely be removed
- if (this.sourceUpdater_.updating()) {
- return;
- } // see if we need to begin loading immediately
-
- const segmentInfo = this.chooseNextRequest_();
- if (!segmentInfo) {
- return;
- }
- if (typeof segmentInfo.timestampOffset === 'number') {
- this.isPendingTimestampOffset_ = false;
- this.timelineChangeController_.pendingTimelineChange({
- type: this.loaderType_,
- from: this.currentTimeline_,
- to: segmentInfo.timeline
- });
- }
- this.loadSegment_(segmentInfo);
- }
- /**
- * Determines if we should call endOfStream on the media source based
- * on the state of the buffer or if appened segment was the final
- * segment in the playlist.
- *
- * @param {number} [mediaIndex] the media index of segment we last appended
- * @param {Object} [playlist] a media playlist object
- * @return {boolean} do we need to call endOfStream on the MediaSource
- */
-
- isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {
- if (!playlist || !this.mediaSource_) {
- return false;
- }
- const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based
-
- const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.
-
- const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream
- // so that MediaSources can trigger the `ended` event when it runs out of
- // buffered data instead of waiting for me
-
- return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;
- }
- /**
- * Determines what request should be made given current segment loader state.
- *
- * @return {Object} a request object that describes the segment/part to load
- */
-
- chooseNextRequest_() {
- const buffered = this.buffered_();
- const bufferedEnd = lastBufferedEnd(buffered) || 0;
- const bufferedTime = timeAheadOf(buffered, this.currentTime_());
- const preloaded = !this.hasPlayed_() && bufferedTime >= 1;
- const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();
- const segments = this.playlist_.segments; // return no segment if:
- // 1. we don't have segments
- // 2. The video has not yet played and we already downloaded a segment
- // 3. we already have enough buffered time
-
- if (!segments.length || preloaded || haveEnoughBuffer) {
- return null;
- }
- this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_(), this.loaderType_);
- const next = {
- partIndex: null,
- mediaIndex: null,
- startOfSegment: null,
- playlist: this.playlist_,
- isSyncRequest: Boolean(!this.syncPoint_)
- };
- if (next.isSyncRequest) {
- next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);
- this.logger_(`choose next request. Can not find sync point. Fallback to media Index: ${next.mediaIndex}`);
- } else if (this.mediaIndex !== null) {
- const segment = segments[this.mediaIndex];
- const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;
- next.startOfSegment = segment.end ? segment.end : bufferedEnd;
- if (segment.parts && segment.parts[partIndex + 1]) {
- next.mediaIndex = this.mediaIndex;
- next.partIndex = partIndex + 1;
- } else {
- next.mediaIndex = this.mediaIndex + 1;
- }
- } else {
- let segmentIndex;
- let partIndex;
- let startTime;
- const targetTime = this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_();
- if (this.mediaSequenceSync_) {
- this.logger_(`chooseNextRequest_ request after Quality Switch:
-For TargetTime: ${targetTime}.
-CurrentTime: ${this.currentTime_()}
-BufferedEnd: ${bufferedEnd}
-Fetch At Buffer: ${this.fetchAtBuffer_}
-`, this.mediaSequenceSync_.diagnostics);
- }
- if (this.mediaSequenceSync_ && this.mediaSequenceSync_.isReliable) {
- const syncInfo = this.getSyncInfoFromMediaSequenceSync_(targetTime);
- if (!syncInfo) {
- this.logger_('chooseNextRequest_ - no sync info found using media sequence sync'); // no match
-
- return null;
- }
- this.logger_(`chooseNextRequest_ mediaSequence syncInfo (${syncInfo.start} --> ${syncInfo.end})`);
- segmentIndex = syncInfo.segmentIndex;
- partIndex = syncInfo.partIndex;
- startTime = syncInfo.start;
- } else {
- this.logger_('chooseNextRequest_ - fallback to a regular segment selection algorithm, based on a syncPoint.'); // fallback
-
- const mediaInfoForTime = Playlist.getMediaInfoForTime({
- exactManifestTimings: this.exactManifestTimings,
- playlist: this.playlist_,
- currentTime: targetTime,
- startingPartIndex: this.syncPoint_.partIndex,
- startingSegmentIndex: this.syncPoint_.segmentIndex,
- startTime: this.syncPoint_.time
- });
- segmentIndex = mediaInfoForTime.segmentIndex;
- partIndex = mediaInfoForTime.partIndex;
- startTime = mediaInfoForTime.startTime;
- }
- next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${targetTime}` : `currentTime ${targetTime}`;
- next.mediaIndex = segmentIndex;
- next.startOfSegment = startTime;
- next.partIndex = partIndex;
- this.logger_(`choose next request. Playlist switched and we have a sync point. Media Index: ${next.mediaIndex} `);
- }
- const nextSegment = segments[next.mediaIndex];
- let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or
- // the next partIndex is invalid do not choose a next segment.
-
- if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {
- return null;
- } // if the next segment has parts, and we don't have a partIndex.
- // Set partIndex to 0
-
- if (typeof next.partIndex !== 'number' && nextSegment.parts) {
- next.partIndex = 0;
- nextPart = nextSegment.parts[0];
- } // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,
- // it applies to each segment in each media playlist.
- // https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1
-
- const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure
- // that the next part we append is "independent" if possible.
- // So we check if the previous part is independent, and request
- // it if it is.
-
- if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {
- if (next.partIndex === 0) {
- const lastSegment = segments[next.mediaIndex - 1];
- const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];
- if (lastSegmentLastPart && lastSegmentLastPart.independent) {
- next.mediaIndex -= 1;
- next.partIndex = lastSegment.parts.length - 1;
- next.independent = 'previous segment';
- }
- } else if (nextSegment.parts[next.partIndex - 1].independent) {
- next.partIndex -= 1;
- next.independent = 'previous part';
- }
- }
- const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:
- // 1. this is the last segment in the playlist
- // 2. end of stream has been called on the media source already
- // 3. the player is not seeking
-
- if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {
- return null;
- }
- if (this.shouldForceTimestampOffsetAfterResync_) {
- this.shouldForceTimestampOffsetAfterResync_ = false;
- next.forceTimestampOffset = true;
- this.logger_('choose next request. Force timestamp offset after loader resync');
- }
- return this.generateSegmentInfo_(next);
- }
- getSyncInfoFromMediaSequenceSync_(targetTime) {
- if (!this.mediaSequenceSync_) {
- return null;
- } // we should pull the target time to the least available time if we drop out of sync for any reason
-
- const finalTargetTime = Math.max(targetTime, this.mediaSequenceSync_.start);
- if (targetTime !== finalTargetTime) {
- this.logger_(`getSyncInfoFromMediaSequenceSync_. Pulled target time from ${targetTime} to ${finalTargetTime}`);
- }
- const mediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(finalTargetTime);
- if (!mediaSequenceSyncInfo) {
- // no match at all
- return null;
- }
- if (!mediaSequenceSyncInfo.isAppended) {
- // has a perfect match
- return mediaSequenceSyncInfo;
- } // has match, but segment was already appended.
- // attempt to auto-advance to the nearest next segment:
-
- const nextMediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(mediaSequenceSyncInfo.end);
- if (!nextMediaSequenceSyncInfo) {
- // no match at all
- return null;
- }
- if (nextMediaSequenceSyncInfo.isAppended) {
- this.logger_('getSyncInfoFromMediaSequenceSync_: We encounter unexpected scenario where next media sequence sync info is also appended!');
- } // got match with the nearest next segment
-
- return nextMediaSequenceSyncInfo;
- }
- generateSegmentInfo_(options) {
- const {
- independent,
- playlist,
- mediaIndex,
- startOfSegment,
- isSyncRequest,
- partIndex,
- forceTimestampOffset,
- getMediaInfoForTime
- } = options;
- const segment = playlist.segments[mediaIndex];
- const part = typeof partIndex === 'number' && segment.parts[partIndex];
- const segmentInfo = {
- requestId: 'segment-loader-' + Math.random(),
- // resolve the segment URL relative to the playlist
- uri: part && part.resolvedUri || segment.resolvedUri,
- // the segment's mediaIndex at the time it was requested
- mediaIndex,
- partIndex: part ? partIndex : null,
- // whether or not to update the SegmentLoader's state with this
- // segment's mediaIndex
- isSyncRequest,
- startOfSegment,
- // the segment's playlist
- playlist,
- // unencrypted bytes of the segment
- bytes: null,
- // when a key is defined for this segment, the encrypted bytes
- encryptedBytes: null,
- // The target timestampOffset for this segment when we append it
- // to the source buffer
- timestampOffset: null,
- // The timeline that the segment is in
- timeline: segment.timeline,
- // The expected duration of the segment in seconds
- duration: part && part.duration || segment.duration,
- // retain the segment in case the playlist updates while doing an async process
- segment,
- part,
- byteLength: 0,
- transmuxer: this.transmuxer_,
- // type of getMediaInfoForTime that was used to get this segment
- getMediaInfoForTime,
- independent
- };
- const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;
- segmentInfo.timestampOffset = this.timestampOffsetForSegment_({
- segmentTimeline: segment.timeline,
- currentTimeline: this.currentTimeline_,
- startOfSegment,
- buffered: this.buffered_(),
- overrideCheck
- });
- const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());
- if (typeof audioBufferedEnd === 'number') {
- // since the transmuxer is using the actual timing values, but the buffer is
- // adjusted by the timestamp offset, we must adjust the value here
- segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();
- }
- if (this.sourceUpdater_.videoBuffered().length) {
- segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,
- // since the transmuxer is using the actual timing values, but the time is
- // adjusted by the timestmap offset, we must adjust the value here
- this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);
- }
- return segmentInfo;
- } // get the timestampoffset for a segment,
- // added so that vtt segment loader can override and prevent
- // adding timestamp offsets.
-
- timestampOffsetForSegment_(options) {
- return timestampOffsetForSegment(options);
- }
- /**
- * Determines if the network has enough bandwidth to complete the current segment
- * request in a timely manner. If not, the request will be aborted early and bandwidth
- * updated to trigger a playlist switch.
- *
- * @param {Object} stats
- * Object containing stats about the request timing and size
- * @private
- */
-
- earlyAbortWhenNeeded_(stats) {
- if (this.vhs_.tech_.paused() ||
- // Don't abort if the current playlist is on the lowestEnabledRendition
- // TODO: Replace using timeout with a boolean indicating whether this playlist is
- // the lowestEnabledRendition.
- !this.xhrOptions_.timeout ||
- // Don't abort if we have no bandwidth information to estimate segment sizes
- !this.playlist_.attributes.BANDWIDTH) {
- return;
- } // Wait at least 1 second since the first byte of data has been received before
- // using the calculated bandwidth from the progress event to allow the bitrate
- // to stabilize
-
- if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {
- return;
- }
- const currentTime = this.currentTime_();
- const measuredBandwidth = stats.bandwidth;
- const segmentDuration = this.pendingSegment_.duration;
- const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort
- // if we are only left with less than 1 second when the request completes.
- // A negative timeUntilRebuffering indicates we are already rebuffering
-
- const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download
- // is larger than the estimated time until the player runs out of forward buffer
-
- if (requestTimeRemaining <= timeUntilRebuffer$1) {
- return;
- }
- const switchCandidate = minRebufferMaxBandwidthSelector({
- main: this.vhs_.playlists.main,
- currentTime,
- bandwidth: measuredBandwidth,
- duration: this.duration_(),
- segmentDuration,
- timeUntilRebuffer: timeUntilRebuffer$1,
- currentTimeline: this.currentTimeline_,
- syncController: this.syncController_
- });
- if (!switchCandidate) {
- return;
- }
- const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;
- const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;
- let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the
- // potential round trip time of the new request so that we are not too aggressive
- // with switching to a playlist that might save us a fraction of a second.
-
- if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {
- minimumTimeSaving = 1;
- }
- if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {
- return;
- } // set the bandwidth to that of the desired playlist being sure to scale by
- // BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it
- // don't trigger a bandwidthupdate as the bandwidth is artifial
-
- this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;
- this.trigger('earlyabort');
- }
- handleAbort_(segmentInfo) {
- this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);
- this.mediaRequestsAborted += 1;
- }
- /**
- * XHR `progress` event handler
- *
- * @param {Event}
- * The XHR `progress` event
- * @param {Object} simpleSegment
- * A simplified segment object copy
- * @private
- */
-
- handleProgress_(event, simpleSegment) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- }
- this.trigger('progress');
- }
- handleTrackInfo_(simpleSegment, trackInfo) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- }
- if (this.checkForIllegalMediaSwitch(trackInfo)) {
- return;
- }
- trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.
- // Guard against cases where we're not getting track info at all until we are
- // certain that all streams will provide it.
-
- if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {
- this.appendInitSegment_ = {
- audio: true,
- video: true
- };
- this.startingMediaInfo_ = trackInfo;
- this.currentMediaInfo_ = trackInfo;
- this.logger_('trackinfo update', trackInfo);
- this.trigger('trackinfo');
- } // trackinfo may cause an abort if the trackinfo
- // causes a codec change to an unsupported codec.
-
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- } // set trackinfo on the pending segment so that
- // it can append.
-
- this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info
-
- if (this.hasEnoughInfoToAppend_()) {
- this.processCallQueue_();
- }
- }
- handleTimingInfo_(simpleSegment, mediaType, timeType, time) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- }
- const segmentInfo = this.pendingSegment_;
- const timingInfoProperty = timingInfoPropertyForMedia(mediaType);
- segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};
- segmentInfo[timingInfoProperty][timeType] = time;
- this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info
-
- if (this.hasEnoughInfoToAppend_()) {
- this.processCallQueue_();
- }
- }
- handleCaptions_(simpleSegment, captionData) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- } // This could only happen with fmp4 segments, but
- // should still not happen in general
-
- if (captionData.length === 0) {
- this.logger_('SegmentLoader received no captions from a caption event');
- return;
- }
- const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing
- // can be adjusted by the timestamp offset
-
- if (!segmentInfo.hasAppendedData_) {
- this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));
- return;
- }
- const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();
- const captionTracks = {}; // get total start/end and captions for each track/stream
-
- captionData.forEach(caption => {
- // caption.stream is actually a track name...
- // set to the existing values in tracks or default values
- captionTracks[caption.stream] = captionTracks[caption.stream] || {
- // Infinity, as any other value will be less than this
- startTime: Infinity,
- captions: [],
- // 0 as an other value will be more than this
- endTime: 0
- };
- const captionTrack = captionTracks[caption.stream];
- captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);
- captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);
- captionTrack.captions.push(caption);
- });
- Object.keys(captionTracks).forEach(trackName => {
- const {
- startTime,
- endTime,
- captions
- } = captionTracks[trackName];
- const inbandTextTracks = this.inbandTextTracks_;
- this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);
- createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.
- // We do this because a rendition change that also changes the timescale for captions
- // will result in captions being re-parsed for certain segments. If we add them again
- // without clearing we will have two of the same captions visible.
-
- removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);
- addCaptionData({
- captionArray: captions,
- inbandTextTracks,
- timestampOffset
- });
- }); // Reset stored captions since we added parsed
- // captions to a text track at this point
-
- if (this.transmuxer_) {
- this.transmuxer_.postMessage({
- action: 'clearParsedMp4Captions'
- });
- }
- }
- handleId3_(simpleSegment, id3Frames, dispatchType) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- }
- const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set
-
- if (!segmentInfo.hasAppendedData_) {
- this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));
- return;
- }
- this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());
- }
- processMetadataQueue_() {
- this.metadataQueue_.id3.forEach(fn => fn());
- this.metadataQueue_.caption.forEach(fn => fn());
- this.metadataQueue_.id3 = [];
- this.metadataQueue_.caption = [];
- }
- processCallQueue_() {
- const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the
- // functions may check the length of the load queue and default to pushing themselves
- // back onto the queue.
-
- this.callQueue_ = [];
- callQueue.forEach(fun => fun());
- }
- processLoadQueue_() {
- const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the
- // functions may check the length of the load queue and default to pushing themselves
- // back onto the queue.
-
- this.loadQueue_ = [];
- loadQueue.forEach(fun => fun());
- }
- /**
- * Determines whether the loader has enough info to load the next segment.
- *
- * @return {boolean}
- * Whether or not the loader has enough info to load the next segment
- */
-
- hasEnoughInfoToLoad_() {
- // Since primary timing goes by video, only the audio loader potentially needs to wait
- // to load.
- if (this.loaderType_ !== 'audio') {
- return true;
- }
- const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's
- // enough info to load.
-
- if (!segmentInfo) {
- return false;
- } // The first segment can and should be loaded immediately so that source buffers are
- // created together (before appending). Source buffer creation uses the presence of
- // audio and video data to determine whether to create audio/video source buffers, and
- // uses processed (transmuxed or parsed) media to determine the types required.
-
- if (!this.getCurrentMediaInfo_()) {
- return true;
- }
- if (
- // Technically, instead of waiting to load a segment on timeline changes, a segment
- // can be requested and downloaded and only wait before it is transmuxed or parsed.
- // But in practice, there are a few reasons why it is better to wait until a loader
- // is ready to append that segment before requesting and downloading:
- //
- // 1. Because audio and main loaders cross discontinuities together, if this loader
- // is waiting for the other to catch up, then instead of requesting another
- // segment and using up more bandwidth, by not yet loading, more bandwidth is
- // allotted to the loader currently behind.
- // 2. media-segment-request doesn't have to have logic to consider whether a segment
- // is ready to be processed or not, isolating the queueing behavior to the loader.
- // 3. The audio loader bases some of its segment properties on timing information
- // provided by the main loader, meaning that, if the logic for waiting on
- // processing was in media-segment-request, then it would also need to know how
- // to re-generate the segment information after the main loader caught up.
- shouldWaitForTimelineChange({
- timelineChangeController: this.timelineChangeController_,
- currentTimeline: this.currentTimeline_,
- segmentTimeline: segmentInfo.timeline,
- loaderType: this.loaderType_,
- audioDisabled: this.audioDisabled_
- })) {
- return false;
- }
- return true;
- }
- getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {
- return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;
- }
- getMediaInfo_(segmentInfo = this.pendingSegment_) {
- return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;
- }
- getPendingSegmentPlaylist() {
- return this.pendingSegment_ ? this.pendingSegment_.playlist : null;
- }
- hasEnoughInfoToAppend_() {
- if (!this.sourceUpdater_.ready()) {
- return false;
- } // If content needs to be removed or the loader is waiting on an append reattempt,
- // then no additional content should be appended until the prior append is resolved.
-
- if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {
- return false;
- }
- const segmentInfo = this.pendingSegment_;
- const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or
- // we do not have information on this specific
- // segment yet
-
- if (!segmentInfo || !trackInfo) {
- return false;
- }
- const {
- hasAudio,
- hasVideo,
- isMuxed
- } = trackInfo;
- if (hasVideo && !segmentInfo.videoTimingInfo) {
- return false;
- } // muxed content only relies on video timing information for now.
-
- if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {
- return false;
- }
- if (shouldWaitForTimelineChange({
- timelineChangeController: this.timelineChangeController_,
- currentTimeline: this.currentTimeline_,
- segmentTimeline: segmentInfo.timeline,
- loaderType: this.loaderType_,
- audioDisabled: this.audioDisabled_
- })) {
- return false;
- }
- return true;
- }
- handleData_(simpleSegment, result) {
- this.earlyAbortWhenNeeded_(simpleSegment.stats);
- if (this.checkForAbort_(simpleSegment.requestId)) {
- return;
- } // If there's anything in the call queue, then this data came later and should be
- // executed after the calls currently queued.
-
- if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {
- this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));
- return;
- }
- const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time
-
- this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats
-
- this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort
- // logic may change behavior depending on the state, and changing state too early may
- // inflate our estimates of bandwidth. In the future this should be re-examined to
- // note more granular states.
- // don't process and append data if the mediaSource is closed
-
- if (this.mediaSource_.readyState === 'closed') {
- return;
- } // if this request included an initialization segment, save that data
- // to the initSegment cache
-
- if (simpleSegment.map) {
- simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request
-
- segmentInfo.segment.map = simpleSegment.map;
- } // if this request included a segment key, save that data in the cache
-
- if (simpleSegment.key) {
- this.segmentKey(simpleSegment.key, true);
- }
- segmentInfo.isFmp4 = simpleSegment.isFmp4;
- segmentInfo.timingInfo = segmentInfo.timingInfo || {};
- if (segmentInfo.isFmp4) {
- this.trigger('fmp4');
- segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;
- } else {
- const trackInfo = this.getCurrentMediaInfo_();
- const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
- let firstVideoFrameTimeForData;
- if (useVideoTimingInfo) {
- firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;
- } // Segment loader knows more about segment timing than the transmuxer (in certain
- // aspects), so make any changes required for a more accurate start time.
- // Don't set the end time yet, as the segment may not be finished processing.
-
- segmentInfo.timingInfo.start = this.trueSegmentStart_({
- currentStart: segmentInfo.timingInfo.start,
- playlist: segmentInfo.playlist,
- mediaIndex: segmentInfo.mediaIndex,
- currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),
- useVideoTimingInfo,
- firstVideoFrameTimeForData,
- videoTimingInfo: segmentInfo.videoTimingInfo,
- audioTimingInfo: segmentInfo.audioTimingInfo
- });
- } // Init segments for audio and video only need to be appended in certain cases. Now
- // that data is about to be appended, we can check the final cases to determine
- // whether we should append an init segment.
-
- this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,
- // as we use the start of the segment to offset the best guess (playlist provided)
- // timestamp offset.
-
- this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should
- // be appended or not.
-
- if (segmentInfo.isSyncRequest) {
- // first save/update our timing info for this segment.
- // this is what allows us to choose an accurate segment
- // and the main reason we make a sync request.
- this.updateTimingInfoEnd_(segmentInfo);
- this.syncController_.saveSegmentTimingInfo({
- segmentInfo,
- shouldSaveTimelineMapping: this.loaderType_ === 'main'
- });
- const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next
- // after taking into account its timing info, do not append it.
-
- if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {
- this.logger_('sync segment was incorrect, not appending');
- return;
- } // otherwise append it like any other segment as our guess was correct.
-
- this.logger_('sync segment was correct, appending');
- } // Save some state so that in the future anything waiting on first append (and/or
- // timestamp offset(s)) can process immediately. While the extra state isn't optimal,
- // we need some notion of whether the timestamp offset or other relevant information
- // has had a chance to be set.
-
- segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.
-
- this.processMetadataQueue_();
- this.appendData_(segmentInfo, result);
- }
- updateAppendInitSegmentStatus(segmentInfo, type) {
- // alt audio doesn't manage timestamp offset
- if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&
- // in the case that we're handling partial data, we don't want to append an init
- // segment for each chunk
- !segmentInfo.changedTimestampOffset) {
- // if the timestamp offset changed, the timeline may have changed, so we have to re-
- // append init segments
- this.appendInitSegment_ = {
- audio: true,
- video: true
- };
- }
- if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {
- // make sure we append init segment on playlist changes, in case the media config
- // changed
- this.appendInitSegment_[type] = true;
- }
- }
- getInitSegmentAndUpdateState_({
- type,
- initSegment,
- map,
- playlist
- }) {
- // "The EXT-X-MAP tag specifies how to obtain the Media Initialization Section
- // (Section 3) required to parse the applicable Media Segments. It applies to every
- // Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag
- // or until the end of the playlist."
- // https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5
- if (map) {
- const id = initSegmentId(map);
- if (this.activeInitSegmentId_ === id) {
- // don't need to re-append the init segment if the ID matches
- return null;
- } // a map-specified init segment takes priority over any transmuxed (or otherwise
- // obtained) init segment
- //
- // this also caches the init segment for later use
-
- initSegment = this.initSegmentForMap(map, true).bytes;
- this.activeInitSegmentId_ = id;
- } // We used to always prepend init segments for video, however, that shouldn't be
- // necessary. Instead, we should only append on changes, similar to what we've always
- // done for audio. This is more important (though may not be that important) for
- // frame-by-frame appending for LHLS, simply because of the increased quantity of
- // appends.
-
- if (initSegment && this.appendInitSegment_[type]) {
- // Make sure we track the playlist that we last used for the init segment, so that
- // we can re-append the init segment in the event that we get data from a new
- // playlist. Discontinuities and track changes are handled in other sections.
- this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.
-
- this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since
- // we are appending the muxer init segment
-
- this.activeInitSegmentId_ = null;
- return initSegment;
- }
- return null;
- }
- handleQuotaExceededError_({
- segmentInfo,
- type,
- bytes
- }, error) {
- const audioBuffered = this.sourceUpdater_.audioBuffered();
- const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,
- // should be cleared out during the buffer removals. However, log in case it helps
- // debug.
-
- if (audioBuffered.length > 1) {
- this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));
- }
- if (videoBuffered.length > 1) {
- this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));
- }
- const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;
- const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;
- const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;
- const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;
- if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {
- // Can't remove enough buffer to make room for new segment (or the browser doesn't
- // allow for appends of segments this size). In the future, it may be possible to
- // split up the segment and append in pieces, but for now, error out this playlist
- // in an attempt to switch to a more manageable rendition.
- this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);
- this.error({
- message: 'Quota exceeded error with append of a single segment of content',
- excludeUntil: Infinity,
- metadata: {
- errorType: videojs.Error.SegmentExceedsSourceBufferQuota
- }
- });
- this.trigger('error');
- return;
- } // To try to resolve the quota exceeded error, clear back buffer and retry. This means
- // that the segment-loader should block on future events until this one is handled, so
- // that it doesn't keep moving onto further segments. Adding the call to the call
- // queue will prevent further appends until waitingOnRemove_ and
- // quotaExceededErrorRetryTimeout_ are cleared.
- //
- // Note that this will only block the current loader. In the case of demuxed content,
- // the other load may keep filling as fast as possible. In practice, this should be
- // OK, as it is a rare case when either audio has a high enough bitrate to fill up a
- // source buffer, or video fills without enough room for audio to append (and without
- // the availability of clearing out seconds of back buffer to make room for audio).
- // But it might still be good to handle this case in the future as a TODO.
-
- this.waitingOnRemove_ = true;
- this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {
- segmentInfo,
- type,
- bytes
- }));
- const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content
- // before retrying.
-
- const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;
- this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);
- this.remove(0, timeToRemoveUntil, () => {
- this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);
- this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted
- // attempts (since we can't clear less than the minimum)
-
- this.quotaExceededErrorRetryTimeout_ = window.setTimeout(() => {
- this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');
- this.quotaExceededErrorRetryTimeout_ = null;
- this.processCallQueue_();
- }, MIN_BACK_BUFFER * 1000);
- }, true);
- }
- handleAppendError_({
- segmentInfo,
- type,
- bytes
- }, error) {
- // if there's no error, nothing to do
- if (!error) {
- return;
- }
- if (error.code === QUOTA_EXCEEDED_ERR) {
- this.handleQuotaExceededError_({
- segmentInfo,
- type,
- bytes
- }); // A quota exceeded error should be recoverable with a future re-append, so no need
- // to trigger an append error.
-
- return;
- }
- this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error); // If an append errors, we often can't recover.
- // (see https://w3c.github.io/media-source/#sourcebuffer-append-error).
- //
- // Trigger a special error so that it can be handled separately from normal,
- // recoverable errors.
-
- this.error({
- message: `${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`,
- metadata: {
- errorType: videojs.Error.SegmentAppendError
- }
- });
- this.trigger('appenderror');
- }
- appendToSourceBuffer_({
- segmentInfo,
- type,
- initSegment,
- data,
- bytes
- }) {
- // If this is a re-append, bytes were already created and don't need to be recreated
- if (!bytes) {
- const segments = [data];
- let byteLength = data.byteLength;
- if (initSegment) {
- // if the media initialization segment is changing, append it before the content
- // segment
- segments.unshift(initSegment);
- byteLength += initSegment.byteLength;
- } // Technically we should be OK appending the init segment separately, however, we
- // haven't yet tested that, and prepending is how we have always done things.
-
- bytes = concatSegments({
- bytes: byteLength,
- segments
- });
- }
- this.sourceUpdater_.appendBuffer({
- segmentInfo,
- type,
- bytes
- }, this.handleAppendError_.bind(this, {
- segmentInfo,
- type,
- bytes
- }));
- }
- handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {
- if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {
- return;
- }
- const segment = this.pendingSegment_.segment;
- const timingInfoProperty = `${type}TimingInfo`;
- if (!segment[timingInfoProperty]) {
- segment[timingInfoProperty] = {};
- }
- segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;
- segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;
- segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;
- segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;
- segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging
-
- segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;
- }
- appendData_(segmentInfo, result) {
- const {
- type,
- data
- } = result;
- if (!data || !data.byteLength) {
- return;
- }
- if (type === 'audio' && this.audioDisabled_) {
- return;
- }
- const initSegment = this.getInitSegmentAndUpdateState_({
- type,
- initSegment: result.initSegment,
- playlist: segmentInfo.playlist,
- map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null
- });
- this.appendToSourceBuffer_({
- segmentInfo,
- type,
- initSegment,
- data
- });
- }
- /**
- * load a specific segment from a request into the buffer
- *
- * @private
- */
-
- loadSegment_(segmentInfo) {
- this.state = 'WAITING';
- this.pendingSegment_ = segmentInfo;
- this.trimBackBuffer_(segmentInfo);
- if (typeof segmentInfo.timestampOffset === 'number') {
- if (this.transmuxer_) {
- this.transmuxer_.postMessage({
- action: 'clearAllMp4Captions'
- });
- }
- }
- if (!this.hasEnoughInfoToLoad_()) {
- this.loadQueue_.push(() => {
- // regenerate the audioAppendStart, timestampOffset, etc as they
- // may have changed since this function was added to the queue.
- const options = _extends$1({}, segmentInfo, {
- forceTimestampOffset: true
- });
- _extends$1(segmentInfo, this.generateSegmentInfo_(options));
- this.isPendingTimestampOffset_ = false;
- this.updateTransmuxerAndRequestSegment_(segmentInfo);
- });
- return;
- }
- this.updateTransmuxerAndRequestSegment_(segmentInfo);
- }
- updateTransmuxerAndRequestSegment_(segmentInfo) {
- // We'll update the source buffer's timestamp offset once we have transmuxed data, but
- // the transmuxer still needs to be updated before then.
- //
- // Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp
- // offset must be passed to the transmuxer for stream correcting adjustments.
- if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {
- this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared
-
- segmentInfo.gopsToAlignWith = [];
- this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh
-
- this.transmuxer_.postMessage({
- action: 'reset'
- });
- this.transmuxer_.postMessage({
- action: 'setTimestampOffset',
- timestampOffset: segmentInfo.timestampOffset
- });
- }
- const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);
- const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);
- const isWalkingForward = this.mediaIndex !== null;
- const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&
- // currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,
- // the first timeline
- segmentInfo.timeline > 0;
- const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;
- this.logger_(`Requesting
-${compactSegmentUrlDescription(segmentInfo.uri)}
-${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),
- // then this init segment has never been seen before and should be appended.
- //
- // At this point the content type (audio/video or both) is not yet known, but it should be safe to set
- // both to true and leave the decision of whether to append the init segment to append time.
-
- if (simpleSegment.map && !simpleSegment.map.bytes) {
- this.logger_('going to request init segment.');
- this.appendInitSegment_ = {
- video: true,
- audio: true
- };
- }
- segmentInfo.abortRequests = mediaSegmentRequest({
- xhr: this.vhs_.xhr,
- xhrOptions: this.xhrOptions_,
- decryptionWorker: this.decrypter_,
- segment: simpleSegment,
- abortFn: this.handleAbort_.bind(this, segmentInfo),
- progressFn: this.handleProgress_.bind(this),
- trackInfoFn: this.handleTrackInfo_.bind(this),
- timingInfoFn: this.handleTimingInfo_.bind(this),
- videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),
- audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),
- captionsFn: this.handleCaptions_.bind(this),
- isEndOfTimeline,
- endedTimelineFn: () => {
- this.logger_('received endedtimeline callback');
- },
- id3Fn: this.handleId3_.bind(this),
- dataFn: this.handleData_.bind(this),
- doneFn: this.segmentRequestFinished_.bind(this),
- onTransmuxerLog: ({
- message,
- level,
- stream
- }) => {
- this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);
- }
- });
- }
- /**
- * trim the back buffer so that we don't have too much data
- * in the source buffer
- *
- * @private
- *
- * @param {Object} segmentInfo - the current segment
- */
-
- trimBackBuffer_(segmentInfo) {
- const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of
- // buffer and a very conservative "garbage collector"
- // We manually clear out the old buffer to ensure
- // we don't trigger the QuotaExceeded error
- // on the source buffer during subsequent appends
-
- if (removeToTime > 0) {
- this.remove(0, removeToTime);
- }
- }
- /**
- * created a simplified copy of the segment object with just the
- * information necessary to perform the XHR and decryption
- *
- * @private
- *
- * @param {Object} segmentInfo - the current segment
- * @return {Object} a simplified segment object copy
- */
-
- createSimplifiedSegmentObj_(segmentInfo) {
- const segment = segmentInfo.segment;
- const part = segmentInfo.part;
- const simpleSegment = {
- resolvedUri: part ? part.resolvedUri : segment.resolvedUri,
- byterange: part ? part.byterange : segment.byterange,
- requestId: segmentInfo.requestId,
- transmuxer: segmentInfo.transmuxer,
- audioAppendStart: segmentInfo.audioAppendStart,
- gopsToAlignWith: segmentInfo.gopsToAlignWith,
- part: segmentInfo.part
- };
- const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];
- if (previousSegment && previousSegment.timeline === segment.timeline) {
- // The baseStartTime of a segment is used to handle rollover when probing the TS
- // segment to retrieve timing information. Since the probe only looks at the media's
- // times (e.g., PTS and DTS values of the segment), and doesn't consider the
- // player's time (e.g., player.currentTime()), baseStartTime should reflect the
- // media time as well. transmuxedDecodeEnd represents the end time of a segment, in
- // seconds of media time, so should be used here. The previous segment is used since
- // the end of the previous segment should represent the beginning of the current
- // segment, so long as they are on the same timeline.
- if (previousSegment.videoTimingInfo) {
- simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;
- } else if (previousSegment.audioTimingInfo) {
- simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;
- }
- }
- if (segment.key) {
- // if the media sequence is greater than 2^32, the IV will be incorrect
- // assuming 10s segments, that would be about 1300 years
- const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);
- simpleSegment.key = this.segmentKey(segment.key);
- simpleSegment.key.iv = iv;
- }
- if (segment.map) {
- simpleSegment.map = this.initSegmentForMap(segment.map);
- }
- return simpleSegment;
- }
- saveTransferStats_(stats) {
- // every request counts as a media request even if it has been aborted
- // or canceled due to a timeout
- this.mediaRequests += 1;
- if (stats) {
- this.mediaBytesTransferred += stats.bytesReceived;
- this.mediaTransferDuration += stats.roundTripTime;
- }
- }
- saveBandwidthRelatedStats_(duration, stats) {
- // byteLength will be used for throughput, and should be based on bytes receieved,
- // which we only know at the end of the request and should reflect total bytes
- // downloaded rather than just bytes processed from components of the segment
- this.pendingSegment_.byteLength = stats.bytesReceived;
- if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
- this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
- return;
- }
- this.bandwidth = stats.bandwidth;
- this.roundTrip = stats.roundTripTime;
- }
- handleTimeout_() {
- // although the VTT segment loader bandwidth isn't really used, it's good to
- // maintain functinality between segment loaders
- this.mediaRequestsTimedout += 1;
- this.bandwidth = 1;
- this.roundTrip = NaN;
- this.trigger('bandwidthupdate');
- this.trigger('timeout');
- }
- /**
- * Handle the callback from the segmentRequest function and set the
- * associated SegmentLoader state and errors if necessary
- *
- * @private
- */
-
- segmentRequestFinished_(error, simpleSegment, result) {
- // TODO handle special cases, e.g., muxed audio/video but only audio in the segment
- // check the call queue directly since this function doesn't need to deal with any
- // data, and can continue even if the source buffers are not set up and we didn't get
- // any data from the segment
- if (this.callQueue_.length) {
- this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));
- return;
- }
- this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset
-
- if (!this.pendingSegment_) {
- return;
- } // the request was aborted and the SegmentLoader has already started
- // another request. this can happen when the timeout for an aborted
- // request triggers due to a limitation in the XHR library
- // do not count this as any sort of request or we risk double-counting
-
- if (simpleSegment.requestId !== this.pendingSegment_.requestId) {
- return;
- } // an error occurred from the active pendingSegment_ so reset everything
-
- if (error) {
- this.pendingSegment_ = null;
- this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done
-
- if (error.code === REQUEST_ERRORS.ABORTED) {
- return;
- }
- this.pause(); // the error is really just that at least one of the requests timed-out
- // set the bandwidth to a very low value and trigger an ABR switch to
- // take emergency action
-
- if (error.code === REQUEST_ERRORS.TIMEOUT) {
- this.handleTimeout_();
- return;
- } // if control-flow has arrived here, then the error is real
- // emit an error event to exclude the current playlist
-
- this.mediaRequestsErrored += 1;
- this.error(error);
- this.trigger('error');
- return;
- }
- const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request
- // generated for ABR purposes
-
- this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);
- segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;
- if (result.gopInfo) {
- this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);
- } // Although we may have already started appending on progress, we shouldn't switch the
- // state away from loading until we are officially done loading the segment data.
-
- this.state = 'APPENDING'; // used for testing
-
- this.trigger('appending');
- this.waitForAppendsToComplete_(segmentInfo);
- }
- setTimeMapping_(timeline) {
- const timelineMapping = this.syncController_.mappingForTimeline(timeline);
- if (timelineMapping !== null) {
- this.timeMapping_ = timelineMapping;
- }
- }
- updateMediaSecondsLoaded_(segment) {
- if (typeof segment.start === 'number' && typeof segment.end === 'number') {
- this.mediaSecondsLoaded += segment.end - segment.start;
- } else {
- this.mediaSecondsLoaded += segment.duration;
- }
- }
- shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {
- if (timestampOffset === null) {
- return false;
- } // note that we're potentially using the same timestamp offset for both video and
- // audio
-
- if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
- return true;
- }
- if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
- return true;
- }
- return false;
- }
- trueSegmentStart_({
- currentStart,
- playlist,
- mediaIndex,
- firstVideoFrameTimeForData,
- currentVideoTimestampOffset,
- useVideoTimingInfo,
- videoTimingInfo,
- audioTimingInfo
- }) {
- if (typeof currentStart !== 'undefined') {
- // if start was set once, keep using it
- return currentStart;
- }
- if (!useVideoTimingInfo) {
- return audioTimingInfo.start;
- }
- const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained
- // within that segment. Since the transmuxer maintains a cache of incomplete data
- // from and/or the last frame seen, the start time may reflect a frame that starts
- // in the previous segment. Check for that case and ensure the start time is
- // accurate for the segment.
-
- if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {
- return firstVideoFrameTimeForData;
- }
- return videoTimingInfo.start;
- }
- waitForAppendsToComplete_(segmentInfo) {
- const trackInfo = this.getCurrentMediaInfo_(segmentInfo);
- if (!trackInfo) {
- this.error({
- message: 'No starting media returned, likely due to an unsupported media format.',
- playlistExclusionDuration: Infinity,
- metadata: {
- errorType: videojs.Error.SegmentUnsupportedMediaFormat
- }
- });
- this.trigger('error');
- return;
- } // Although transmuxing is done, appends may not yet be finished. Throw a marker
- // on each queue this loader is responsible for to ensure that the appends are
- // complete.
-
- const {
- hasAudio,
- hasVideo,
- isMuxed
- } = trackInfo;
- const waitForVideo = this.loaderType_ === 'main' && hasVideo;
- const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;
- segmentInfo.waitingOnAppends = 0; // segments with no data
-
- if (!segmentInfo.hasAppendedData_) {
- if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {
- // When there's no audio or video data in the segment, there's no audio or video
- // timing information.
- //
- // If there's no audio or video timing information, then the timestamp offset
- // can't be adjusted to the appropriate value for the transmuxer and source
- // buffers.
- //
- // Therefore, the next segment should be used to set the timestamp offset.
- this.isPendingTimestampOffset_ = true;
- } // override settings for metadata only segments
-
- segmentInfo.timingInfo = {
- start: 0
- };
- segmentInfo.waitingOnAppends++;
- if (!this.isPendingTimestampOffset_) {
- // update the timestampoffset
- this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have
- // no video/audio data.
-
- this.processMetadataQueue_();
- } // append is "done" instantly with no data.
-
- this.checkAppendsDone_(segmentInfo);
- return;
- } // Since source updater could call back synchronously, do the increments first.
-
- if (waitForVideo) {
- segmentInfo.waitingOnAppends++;
- }
- if (waitForAudio) {
- segmentInfo.waitingOnAppends++;
- }
- if (waitForVideo) {
- this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
- }
- if (waitForAudio) {
- this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
- }
- }
- checkAppendsDone_(segmentInfo) {
- if (this.checkForAbort_(segmentInfo.requestId)) {
- return;
- }
- segmentInfo.waitingOnAppends--;
- if (segmentInfo.waitingOnAppends === 0) {
- this.handleAppendsDone_();
- }
- }
- checkForIllegalMediaSwitch(trackInfo) {
- const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);
- if (illegalMediaSwitchError) {
- this.error({
- message: illegalMediaSwitchError,
- playlistExclusionDuration: Infinity,
- metadata: {
- errorType: videojs.Error.SegmentSwitchError
- }
- });
- this.trigger('error');
- return true;
- }
- return false;
- }
- updateSourceBufferTimestampOffset_(segmentInfo) {
- if (segmentInfo.timestampOffset === null ||
- // we don't yet have the start for whatever media type (video or audio) has
- // priority, timing-wise, so we must wait
- typeof segmentInfo.timingInfo.start !== 'number' ||
- // already updated the timestamp offset for this segment
- segmentInfo.changedTimestampOffset ||
- // the alt audio loader should not be responsible for setting the timestamp offset
- this.loaderType_ !== 'main') {
- return;
- }
- let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that
- // the timing info here comes from video. In the event that the audio is longer than
- // the video, this will trim the start of the audio.
- // This also trims any offset from 0 at the beginning of the media
-
- segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({
- videoTimingInfo: segmentInfo.segment.videoTimingInfo,
- audioTimingInfo: segmentInfo.segment.audioTimingInfo,
- timingInfo: segmentInfo.timingInfo
- }); // In the event that there are part segment downloads, each will try to update the
- // timestamp offset. Retaining this bit of state prevents us from updating in the
- // future (within the same segment), however, there may be a better way to handle it.
-
- segmentInfo.changedTimestampOffset = true;
- if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
- this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);
- didChange = true;
- }
- if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
- this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);
- didChange = true;
- }
- if (didChange) {
- this.trigger('timestampoffset');
- }
- }
- getSegmentStartTimeForTimestampOffsetCalculation_({
- videoTimingInfo,
- audioTimingInfo,
- timingInfo
- }) {
- if (!this.useDtsForTimestampOffset_) {
- return timingInfo.start;
- }
- if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {
- return videoTimingInfo.transmuxedDecodeStart;
- } // handle audio only
-
- if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {
- return audioTimingInfo.transmuxedDecodeStart;
- } // handle content not transmuxed (e.g., MP4)
-
- return timingInfo.start;
- }
- updateTimingInfoEnd_(segmentInfo) {
- segmentInfo.timingInfo = segmentInfo.timingInfo || {};
- const trackInfo = this.getMediaInfo_();
- const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
- const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;
- if (!prioritizedTimingInfo) {
- return;
- }
- segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?
- // End time may not exist in a case where we aren't parsing the full segment (one
- // current example is the case of fmp4), so use the rough duration to calculate an
- // end time.
- prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;
- }
- /**
- * callback to run when appendBuffer is finished. detects if we are
- * in a good state to do things with the data we got, or if we need
- * to wait for more
- *
- * @private
- */
-
- handleAppendsDone_() {
- // appendsdone can cause an abort
- if (this.pendingSegment_) {
- this.trigger('appendsdone');
- }
- if (!this.pendingSegment_) {
- this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in
- // all appending cases?
-
- if (!this.paused()) {
- this.monitorBuffer_();
- }
- return;
- }
- const segmentInfo = this.pendingSegment_;
- if (segmentInfo.part && segmentInfo.part.syncInfo) {
- // low-latency flow
- segmentInfo.part.syncInfo.markAppended();
- } else if (segmentInfo.segment.syncInfo) {
- // normal flow
- segmentInfo.segment.syncInfo.markAppended();
- } // Now that the end of the segment has been reached, we can set the end time. It's
- // best to wait until all appends are done so we're sure that the primary media is
- // finished (and we have its end time).
-
- this.updateTimingInfoEnd_(segmentInfo);
- if (this.shouldSaveSegmentTimingInfo_) {
- // Timeline mappings should only be saved for the main loader. This is for multiple
- // reasons:
- //
- // 1) Only one mapping is saved per timeline, meaning that if both the audio loader
- // and the main loader try to save the timeline mapping, whichever comes later
- // will overwrite the first. In theory this is OK, as the mappings should be the
- // same, however, it breaks for (2)
- // 2) In the event of a live stream, the initial live point will make for a somewhat
- // arbitrary mapping. If audio and video streams are not perfectly in-sync, then
- // the mapping will be off for one of the streams, dependent on which one was
- // first saved (see (1)).
- // 3) Primary timing goes by video in VHS, so the mapping should be video.
- //
- // Since the audio loader will wait for the main loader to load the first segment,
- // the main loader will save the first timeline mapping, and ensure that there won't
- // be a case where audio loads two segments without saving a mapping (thus leading
- // to missing segment timing info).
- this.syncController_.saveSegmentTimingInfo({
- segmentInfo,
- shouldSaveTimelineMapping: this.loaderType_ === 'main'
- });
- }
- const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);
- if (segmentDurationMessage) {
- if (segmentDurationMessage.severity === 'warn') {
- videojs.log.warn(segmentDurationMessage.message);
- } else {
- this.logger_(segmentDurationMessage.message);
- }
- }
- this.recordThroughput_(segmentInfo);
- this.pendingSegment_ = null;
- this.state = 'READY';
- if (segmentInfo.isSyncRequest) {
- this.trigger('syncinfoupdate'); // if the sync request was not appended
- // then it was not the correct segment.
- // throw it away and use the data it gave us
- // to get the correct one.
-
- if (!segmentInfo.hasAppendedData_) {
- this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);
- return;
- }
- }
- this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);
- this.addSegmentMetadataCue_(segmentInfo);
- this.fetchAtBuffer_ = true;
- if (this.currentTimeline_ !== segmentInfo.timeline) {
- this.timelineChangeController_.lastTimelineChange({
- type: this.loaderType_,
- from: this.currentTimeline_,
- to: segmentInfo.timeline
- }); // If audio is not disabled, the main segment loader is responsible for updating
- // the audio timeline as well. If the content is video only, this won't have any
- // impact.
-
- if (this.loaderType_ === 'main' && !this.audioDisabled_) {
- this.timelineChangeController_.lastTimelineChange({
- type: 'audio',
- from: this.currentTimeline_,
- to: segmentInfo.timeline
- });
- }
- }
- this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before
- // the following conditional otherwise it may consider this a bad "guess"
- // and attempt to resync when the post-update seekable window and live
- // point would mean that this was the perfect segment to fetch
-
- this.trigger('syncinfoupdate');
- const segment = segmentInfo.segment;
- const part = segmentInfo.part;
- const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;
- const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before
- // the currentTime_ that means that our conservative guess was too conservative.
- // In that case, reset the loader state so that we try to use any information gained
- // from the previous request to create a new, more accurate, sync-point.
-
- if (badSegmentGuess || badPartGuess) {
- this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);
- this.resetEverything();
- return;
- }
- const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment
- // and conservatively guess
-
- if (isWalkingForward) {
- this.trigger('bandwidthupdate');
- }
- this.trigger('progress');
- this.mediaIndex = segmentInfo.mediaIndex;
- this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the
- // buffer, end the stream. this ensures the "ended" event will
- // fire if playback reaches that point.
-
- if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {
- this.endOfStream();
- } // used for testing
-
- this.trigger('appended');
- if (segmentInfo.hasAppendedData_) {
- this.mediaAppends++;
- }
- if (!this.paused()) {
- this.monitorBuffer_();
- }
- }
- /**
- * Records the current throughput of the decrypt, transmux, and append
- * portion of the semgment pipeline. `throughput.rate` is a the cumulative
- * moving average of the throughput. `throughput.count` is the number of
- * data points in the average.
- *
- * @private
- * @param {Object} segmentInfo the object returned by loadSegment
- */
-
- recordThroughput_(segmentInfo) {
- if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
- this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
- return;
- }
- const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide
- // by zero in the case where the throughput is ridiculously high
-
- const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second
-
- const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:
- // newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)
-
- this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;
- }
- /**
- * Adds a cue to the segment-metadata track with some metadata information about the
- * segment
- *
- * @private
- * @param {Object} segmentInfo
- * the object returned by loadSegment
- * @method addSegmentMetadataCue_
- */
-
- addSegmentMetadataCue_(segmentInfo) {
- if (!this.segmentMetadataTrack_) {
- return;
- }
- const segment = segmentInfo.segment;
- const start = segment.start;
- const end = segment.end; // Do not try adding the cue if the start and end times are invalid.
-
- if (!finite(start) || !finite(end)) {
- return;
- }
- removeCuesFromTrack(start, end, this.segmentMetadataTrack_);
- const Cue = window.WebKitDataCue || window.VTTCue;
- const value = {
- custom: segment.custom,
- dateTimeObject: segment.dateTimeObject,
- dateTimeString: segment.dateTimeString,
- programDateTime: segment.programDateTime,
- bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,
- resolution: segmentInfo.playlist.attributes.RESOLUTION,
- codecs: segmentInfo.playlist.attributes.CODECS,
- byteLength: segmentInfo.byteLength,
- uri: segmentInfo.uri,
- timeline: segmentInfo.timeline,
- playlist: segmentInfo.playlist.id,
- start,
- end
- };
- const data = JSON.stringify(value);
- const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between
- // the differences of WebKitDataCue in safari and VTTCue in other browsers
-
- cue.value = value;
- this.segmentMetadataTrack_.addCue(cue);
- }
- }
- function noop() {}
- const toTitleCase = function (string) {
- if (typeof string !== 'string') {
- return string;
- }
- return string.replace(/./, w => w.toUpperCase());
- };
-
- /**
- * @file source-updater.js
- */
- const bufferTypes = ['video', 'audio'];
- const updating = (type, sourceUpdater) => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`];
- return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];
- };
- const nextQueueIndexOfType = (type, queue) => {
- for (let i = 0; i < queue.length; i++) {
- const queueEntry = queue[i];
- if (queueEntry.type === 'mediaSource') {
- // If the next entry is a media source entry (uses multiple source buffers), block
- // processing to allow it to go through first.
- return null;
- }
- if (queueEntry.type === type) {
- return i;
- }
- }
- return null;
- };
- const shiftQueue = (type, sourceUpdater) => {
- if (sourceUpdater.queue.length === 0) {
- return;
- }
- let queueIndex = 0;
- let queueEntry = sourceUpdater.queue[queueIndex];
- if (queueEntry.type === 'mediaSource') {
- if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {
- sourceUpdater.queue.shift();
- queueEntry.action(sourceUpdater);
- if (queueEntry.doneFn) {
- queueEntry.doneFn();
- } // Only specific source buffer actions must wait for async updateend events. Media
- // Source actions process synchronously. Therefore, both audio and video source
- // buffers are now clear to process the next queue entries.
-
- shiftQueue('audio', sourceUpdater);
- shiftQueue('video', sourceUpdater);
- } // Media Source actions require both source buffers, so if the media source action
- // couldn't process yet (because one or both source buffers are busy), block other
- // queue actions until both are available and the media source action can process.
-
- return;
- }
- if (type === 'mediaSource') {
- // If the queue was shifted by a media source action (this happens when pushing a
- // media source action onto the queue), then it wasn't from an updateend event from an
- // audio or video source buffer, so there's no change from previous state, and no
- // processing should be done.
- return;
- } // Media source queue entries don't need to consider whether the source updater is
- // started (i.e., source buffers are created) as they don't need the source buffers, but
- // source buffer queue entries do.
-
- if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {
- return;
- }
- if (queueEntry.type !== type) {
- queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);
- if (queueIndex === null) {
- // Either there's no queue entry that uses this source buffer type in the queue, or
- // there's a media source queue entry before the next entry of this type, in which
- // case wait for that action to process first.
- return;
- }
- queueEntry = sourceUpdater.queue[queueIndex];
- }
- sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.
- //
- // The queue pending operation must be set before the action is performed in the event
- // that the action results in a synchronous event that is acted upon. For instance, if
- // an exception is thrown that can be handled, it's possible that new actions will be
- // appended to an empty queue and immediately executed, but would not have the correct
- // pending information if this property was set after the action was performed.
-
- sourceUpdater.queuePending[type] = queueEntry;
- queueEntry.action(type, sourceUpdater);
- if (!queueEntry.doneFn) {
- // synchronous operation, process next entry
- sourceUpdater.queuePending[type] = null;
- shiftQueue(type, sourceUpdater);
- return;
- }
- };
- const cleanupBuffer = (type, sourceUpdater) => {
- const buffer = sourceUpdater[`${type}Buffer`];
- const titleType = toTitleCase(type);
- if (!buffer) {
- return;
- }
- buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
- buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);
- sourceUpdater.codecs[type] = null;
- sourceUpdater[`${type}Buffer`] = null;
- };
- const inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;
- const actions = {
- appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- }
- sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);
- try {
- sourceBuffer.appendBuffer(bytes);
- } catch (e) {
- sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);
- sourceUpdater.queuePending[type] = null;
- onError(e);
- }
- },
- remove: (start, end) => (type, sourceUpdater) => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- }
- sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);
- try {
- sourceBuffer.remove(start, end);
- } catch (e) {
- sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);
- }
- },
- timestampOffset: offset => (type, sourceUpdater) => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- }
- sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);
- sourceBuffer.timestampOffset = offset;
- },
- callback: callback => (type, sourceUpdater) => {
- callback();
- },
- endOfStream: error => sourceUpdater => {
- if (sourceUpdater.mediaSource.readyState !== 'open') {
- return;
- }
- sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);
- try {
- sourceUpdater.mediaSource.endOfStream(error);
- } catch (e) {
- videojs.log.warn('Failed to call media source endOfStream', e);
- }
- },
- duration: duration => sourceUpdater => {
- sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);
- try {
- sourceUpdater.mediaSource.duration = duration;
- } catch (e) {
- videojs.log.warn('Failed to set media source duration', e);
- }
- },
- abort: () => (type, sourceUpdater) => {
- if (sourceUpdater.mediaSource.readyState !== 'open') {
- return;
- }
- const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- }
- sourceUpdater.logger_(`calling abort on ${type}Buffer`);
- try {
- sourceBuffer.abort();
- } catch (e) {
- videojs.log.warn(`Failed to abort on ${type}Buffer`, e);
- }
- },
- addSourceBuffer: (type, codec) => sourceUpdater => {
- const titleType = toTitleCase(type);
- const mime = getMimeForCodec(codec);
- sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);
- const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);
- sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
- sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);
- sourceUpdater.codecs[type] = codec;
- sourceUpdater[`${type}Buffer`] = sourceBuffer;
- },
- removeSourceBuffer: type => sourceUpdater => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`];
- cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- }
- sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);
- try {
- sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);
- } catch (e) {
- videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);
- }
- },
- changeType: codec => (type, sourceUpdater) => {
- const sourceBuffer = sourceUpdater[`${type}Buffer`];
- const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null
- // or the media source does not contain this source buffer.
-
- if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
- return;
- } // do not update codec if we don't need to.
- // Only update if we change the codec base.
- // For example, going from avc1.640028 to avc1.64001f does not require a changeType call.
-
- const newCodecBase = codec.substring(0, codec.indexOf('.'));
- const oldCodec = sourceUpdater.codecs[type];
- const oldCodecBase = oldCodec.substring(0, oldCodec.indexOf('.'));
- if (oldCodecBase === newCodecBase) {
- return;
- }
- sourceUpdater.logger_(`changing ${type}Buffer codec from ${sourceUpdater.codecs[type]} to ${codec}`); // check if change to the provided type is supported
-
- try {
- sourceBuffer.changeType(mime);
- sourceUpdater.codecs[type] = codec;
- } catch (e) {
- videojs.log.warn(`Failed to changeType on ${type}Buffer`, e);
- }
- }
- };
- const pushQueue = ({
- type,
- sourceUpdater,
- action,
- doneFn,
- name
- }) => {
- sourceUpdater.queue.push({
- type,
- action,
- doneFn,
- name
- });
- shiftQueue(type, sourceUpdater);
- };
- const onUpdateend = (type, sourceUpdater) => e => {
- // Although there should, in theory, be a pending action for any updateend receieved,
- // there are some actions that may trigger updateend events without set definitions in
- // the w3c spec. For instance, setting the duration on the media source may trigger
- // updateend events on source buffers. This does not appear to be in the spec. As such,
- // if we encounter an updateend without a corresponding pending action from our queue
- // for that source buffer type, process the next action.
- const bufferedRangesForType = sourceUpdater[`${type}Buffered`]();
- const descriptiveString = bufferedRangesToString(bufferedRangesForType);
- sourceUpdater.logger_(`received "updateend" event for ${type} Source Buffer: `, descriptiveString);
- if (sourceUpdater.queuePending[type]) {
- const doneFn = sourceUpdater.queuePending[type].doneFn;
- sourceUpdater.queuePending[type] = null;
- if (doneFn) {
- // if there's an error, report it
- doneFn(sourceUpdater[`${type}Error_`]);
- }
- }
- shiftQueue(type, sourceUpdater);
- };
- /**
- * A queue of callbacks to be serialized and applied when a
- * MediaSource and its associated SourceBuffers are not in the
- * updating state. It is used by the segment loader to update the
- * underlying SourceBuffers when new data is loaded, for instance.
- *
- * @class SourceUpdater
- * @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from
- * @param {string} mimeType the desired MIME type of the underlying SourceBuffer
- */
-
- class SourceUpdater extends videojs.EventTarget {
- constructor(mediaSource) {
- super();
- this.mediaSource = mediaSource;
- this.sourceopenListener_ = () => shiftQueue('mediaSource', this);
- this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);
- this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0
-
- this.audioTimestampOffset_ = 0;
- this.videoTimestampOffset_ = 0;
- this.queue = [];
- this.queuePending = {
- audio: null,
- video: null
- };
- this.delayedAudioAppendQueue_ = [];
- this.videoAppendQueued_ = false;
- this.codecs = {};
- this.onVideoUpdateEnd_ = onUpdateend('video', this);
- this.onAudioUpdateEnd_ = onUpdateend('audio', this);
- this.onVideoError_ = e => {
- // used for debugging
- this.videoError_ = e;
- };
- this.onAudioError_ = e => {
- // used for debugging
- this.audioError_ = e;
- };
- this.createdSourceBuffers_ = false;
- this.initializedEme_ = false;
- this.triggeredReady_ = false;
- }
- initializedEme() {
- this.initializedEme_ = true;
- this.triggerReady();
- }
- hasCreatedSourceBuffers() {
- // if false, likely waiting on one of the segment loaders to get enough data to create
- // source buffers
- return this.createdSourceBuffers_;
- }
- hasInitializedAnyEme() {
- return this.initializedEme_;
- }
- ready() {
- return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();
- }
- createSourceBuffers(codecs) {
- if (this.hasCreatedSourceBuffers()) {
- // already created them before
- return;
- } // the intial addOrChangeSourceBuffers will always be
- // two add buffers.
-
- this.addOrChangeSourceBuffers(codecs);
- this.createdSourceBuffers_ = true;
- this.trigger('createdsourcebuffers');
- this.triggerReady();
- }
- triggerReady() {
- // only allow ready to be triggered once, this prevents the case
- // where:
- // 1. we trigger createdsourcebuffers
- // 2. ie 11 synchronously initializates eme
- // 3. the synchronous initialization causes us to trigger ready
- // 4. We go back to the ready check in createSourceBuffers and ready is triggered again.
- if (this.ready() && !this.triggeredReady_) {
- this.triggeredReady_ = true;
- this.trigger('ready');
- }
- }
- /**
- * Add a type of source buffer to the media source.
- *
- * @param {string} type
- * The type of source buffer to add.
- *
- * @param {string} codec
- * The codec to add the source buffer with.
- */
-
- addSourceBuffer(type, codec) {
- pushQueue({
- type: 'mediaSource',
- sourceUpdater: this,
- action: actions.addSourceBuffer(type, codec),
- name: 'addSourceBuffer'
- });
- }
- /**
- * call abort on a source buffer.
- *
- * @param {string} type
- * The type of source buffer to call abort on.
- */
-
- abort(type) {
- pushQueue({
- type,
- sourceUpdater: this,
- action: actions.abort(type),
- name: 'abort'
- });
- }
- /**
- * Call removeSourceBuffer and remove a specific type
- * of source buffer on the mediaSource.
- *
- * @param {string} type
- * The type of source buffer to remove.
- */
-
- removeSourceBuffer(type) {
- if (!this.canRemoveSourceBuffer()) {
- videojs.log.error('removeSourceBuffer is not supported!');
- return;
- }
- pushQueue({
- type: 'mediaSource',
- sourceUpdater: this,
- action: actions.removeSourceBuffer(type),
- name: 'removeSourceBuffer'
- });
- }
- /**
- * Whether or not the removeSourceBuffer function is supported
- * on the mediaSource.
- *
- * @return {boolean}
- * if removeSourceBuffer can be called.
- */
-
- canRemoveSourceBuffer() {
- // As of Firefox 83 removeSourceBuffer
- // throws errors, so we report that it does not support this.
- return !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';
- }
- /**
- * Whether or not the changeType function is supported
- * on our SourceBuffers.
- *
- * @return {boolean}
- * if changeType can be called.
- */
-
- static canChangeType() {
- return window.SourceBuffer && window.SourceBuffer.prototype && typeof window.SourceBuffer.prototype.changeType === 'function';
- }
- /**
- * Whether or not the changeType function is supported
- * on our SourceBuffers.
- *
- * @return {boolean}
- * if changeType can be called.
- */
-
- canChangeType() {
- return this.constructor.canChangeType();
- }
- /**
- * Call the changeType function on a source buffer, given the code and type.
- *
- * @param {string} type
- * The type of source buffer to call changeType on.
- *
- * @param {string} codec
- * The codec string to change type with on the source buffer.
- */
-
- changeType(type, codec) {
- if (!this.canChangeType()) {
- videojs.log.error('changeType is not supported!');
- return;
- }
- pushQueue({
- type,
- sourceUpdater: this,
- action: actions.changeType(codec),
- name: 'changeType'
- });
- }
- /**
- * Add source buffers with a codec or, if they are already created,
- * call changeType on source buffers using changeType.
- *
- * @param {Object} codecs
- * Codecs to switch to
- */
-
- addOrChangeSourceBuffers(codecs) {
- if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {
- throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');
- }
- Object.keys(codecs).forEach(type => {
- const codec = codecs[type];
- if (!this.hasCreatedSourceBuffers()) {
- return this.addSourceBuffer(type, codec);
- }
- if (this.canChangeType()) {
- this.changeType(type, codec);
- }
- });
- }
- /**
- * Queue an update to append an ArrayBuffer.
- *
- * @param {MediaObject} object containing audioBytes and/or videoBytes
- * @param {Function} done the function to call when done
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data
- */
-
- appendBuffer(options, doneFn) {
- const {
- segmentInfo,
- type,
- bytes
- } = options;
- this.processedAppend_ = true;
- if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {
- this.delayedAudioAppendQueue_.push([options, doneFn]);
- this.logger_(`delayed audio append of ${bytes.length} until video append`);
- return;
- } // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will
- // not be fired. This means that the queue will be blocked until the next action
- // taken by the segment-loader. Provide a mechanism for segment-loader to handle
- // these errors by calling the doneFn with the specific error.
-
- const onError = doneFn;
- pushQueue({
- type,
- sourceUpdater: this,
- action: actions.appendBuffer(bytes, segmentInfo || {
- mediaIndex: -1
- }, onError),
- doneFn,
- name: 'appendBuffer'
- });
- if (type === 'video') {
- this.videoAppendQueued_ = true;
- if (!this.delayedAudioAppendQueue_.length) {
- return;
- }
- const queue = this.delayedAudioAppendQueue_.slice();
- this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);
- this.delayedAudioAppendQueue_.length = 0;
- queue.forEach(que => {
- this.appendBuffer.apply(this, que);
- });
- }
- }
- /**
- * Get the audio buffer's buffered timerange.
- *
- * @return {TimeRange}
- * The audio buffer's buffered time range
- */
-
- audioBuffered() {
- // no media source/source buffer or it isn't in the media sources
- // source buffer list
- if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {
- return createTimeRanges();
- }
- return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();
- }
- /**
- * Get the video buffer's buffered timerange.
- *
- * @return {TimeRange}
- * The video buffer's buffered time range
- */
-
- videoBuffered() {
- // no media source/source buffer or it isn't in the media sources
- // source buffer list
- if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {
- return createTimeRanges();
- }
- return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();
- }
- /**
- * Get a combined video/audio buffer's buffered timerange.
- *
- * @return {TimeRange}
- * the combined time range
- */
-
- buffered() {
- const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;
- const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;
- if (audio && !video) {
- return this.audioBuffered();
- }
- if (video && !audio) {
- return this.videoBuffered();
- }
- return bufferIntersection(this.audioBuffered(), this.videoBuffered());
- }
- /**
- * Add a callback to the queue that will set duration on the mediaSource.
- *
- * @param {number} duration
- * The duration to set
- *
- * @param {Function} [doneFn]
- * function to run after duration has been set.
- */
-
- setDuration(duration, doneFn = noop) {
- // In order to set the duration on the media source, it's necessary to wait for all
- // source buffers to no longer be updating. "If the updating attribute equals true on
- // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
- // abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
- pushQueue({
- type: 'mediaSource',
- sourceUpdater: this,
- action: actions.duration(duration),
- name: 'duration',
- doneFn
- });
- }
- /**
- * Add a mediaSource endOfStream call to the queue
- *
- * @param {Error} [error]
- * Call endOfStream with an error
- *
- * @param {Function} [doneFn]
- * A function that should be called when the
- * endOfStream call has finished.
- */
-
- endOfStream(error = null, doneFn = noop) {
- if (typeof error !== 'string') {
- error = undefined;
- } // In order to set the duration on the media source, it's necessary to wait for all
- // source buffers to no longer be updating. "If the updating attribute equals true on
- // any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
- // abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
-
- pushQueue({
- type: 'mediaSource',
- sourceUpdater: this,
- action: actions.endOfStream(error),
- name: 'endOfStream',
- doneFn
- });
- }
- /**
- * Queue an update to remove a time range from the buffer.
- *
- * @param {number} start where to start the removal
- * @param {number} end where to end the removal
- * @param {Function} [done=noop] optional callback to be executed when the remove
- * operation is complete
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
- */
-
- removeAudio(start, end, done = noop) {
- if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {
- done();
- return;
- }
- pushQueue({
- type: 'audio',
- sourceUpdater: this,
- action: actions.remove(start, end),
- doneFn: done,
- name: 'remove'
- });
- }
- /**
- * Queue an update to remove a time range from the buffer.
- *
- * @param {number} start where to start the removal
- * @param {number} end where to end the removal
- * @param {Function} [done=noop] optional callback to be executed when the remove
- * operation is complete
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
- */
-
- removeVideo(start, end, done = noop) {
- if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {
- done();
- return;
- }
- pushQueue({
- type: 'video',
- sourceUpdater: this,
- action: actions.remove(start, end),
- doneFn: done,
- name: 'remove'
- });
- }
- /**
- * Whether the underlying sourceBuffer is updating or not
- *
- * @return {boolean} the updating status of the SourceBuffer
- */
-
- updating() {
- // the audio/video source buffer is updating
- if (updating('audio', this) || updating('video', this)) {
- return true;
- }
- return false;
- }
- /**
- * Set/get the timestampoffset on the audio SourceBuffer
- *
- * @return {number} the timestamp offset
- */
-
- audioTimestampOffset(offset) {
- if (typeof offset !== 'undefined' && this.audioBuffer &&
- // no point in updating if it's the same
- this.audioTimestampOffset_ !== offset) {
- pushQueue({
- type: 'audio',
- sourceUpdater: this,
- action: actions.timestampOffset(offset),
- name: 'timestampOffset'
- });
- this.audioTimestampOffset_ = offset;
- }
- return this.audioTimestampOffset_;
- }
- /**
- * Set/get the timestampoffset on the video SourceBuffer
- *
- * @return {number} the timestamp offset
- */
-
- videoTimestampOffset(offset) {
- if (typeof offset !== 'undefined' && this.videoBuffer &&
- // no point in updating if it's the same
- this.videoTimestampOffset !== offset) {
- pushQueue({
- type: 'video',
- sourceUpdater: this,
- action: actions.timestampOffset(offset),
- name: 'timestampOffset'
- });
- this.videoTimestampOffset_ = offset;
- }
- return this.videoTimestampOffset_;
- }
- /**
- * Add a function to the queue that will be called
- * when it is its turn to run in the audio queue.
- *
- * @param {Function} callback
- * The callback to queue.
- */
-
- audioQueueCallback(callback) {
- if (!this.audioBuffer) {
- return;
- }
- pushQueue({
- type: 'audio',
- sourceUpdater: this,
- action: actions.callback(callback),
- name: 'callback'
- });
- }
- /**
- * Add a function to the queue that will be called
- * when it is its turn to run in the video queue.
- *
- * @param {Function} callback
- * The callback to queue.
- */
-
- videoQueueCallback(callback) {
- if (!this.videoBuffer) {
- return;
- }
- pushQueue({
- type: 'video',
- sourceUpdater: this,
- action: actions.callback(callback),
- name: 'callback'
- });
- }
- /**
- * dispose of the source updater and the underlying sourceBuffer
- */
-
- dispose() {
- this.trigger('dispose');
- bufferTypes.forEach(type => {
- this.abort(type);
- if (this.canRemoveSourceBuffer()) {
- this.removeSourceBuffer(type);
- } else {
- this[`${type}QueueCallback`](() => cleanupBuffer(type, this));
- }
- });
- this.videoAppendQueued_ = false;
- this.delayedAudioAppendQueue_.length = 0;
- if (this.sourceopenListener_) {
- this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);
- }
- this.off();
- }
- }
- const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));
- const bufferToHexString = buffer => {
- const uInt8Buffer = new Uint8Array(buffer);
- return Array.from(uInt8Buffer).map(byte => byte.toString(16).padStart(2, '0')).join('');
- };
-
- /**
- * @file vtt-segment-loader.js
- */
- const VTT_LINE_TERMINATORS = new Uint8Array('\n\n'.split('').map(char => char.charCodeAt(0)));
- class NoVttJsError extends Error {
- constructor() {
- super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');
- }
- }
- /**
- * An object that manages segment loading and appending.
- *
- * @class VTTSegmentLoader
- * @param {Object} options required and optional options
- * @extends videojs.EventTarget
- */
-
- class VTTSegmentLoader extends SegmentLoader {
- constructor(settings, options = {}) {
- super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;
- // however, VTTSegmentLoader has no need of a media source, so delete the reference
-
- this.mediaSource_ = null;
- this.subtitlesTrack_ = null;
- this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;
- this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in
- // the sync controller leads to improper behavior.
-
- this.shouldSaveSegmentTimingInfo_ = false;
- }
- createTransmuxer_() {
- // don't need to transmux any subtitles
- return null;
- }
- /**
- * Indicates which time ranges are buffered
- *
- * @return {TimeRange}
- * TimeRange object representing the current buffered ranges
- */
-
- buffered_() {
- if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {
- return createTimeRanges();
- }
- const cues = this.subtitlesTrack_.cues;
- const start = cues[0].startTime;
- const end = cues[cues.length - 1].startTime;
- return createTimeRanges([[start, end]]);
- }
- /**
- * Gets and sets init segment for the provided map
- *
- * @param {Object} map
- * The map object representing the init segment to get or set
- * @param {boolean=} set
- * If true, the init segment for the provided map should be saved
- * @return {Object}
- * map object for desired init segment
- */
-
- initSegmentForMap(map, set = false) {
- if (!map) {
- return null;
- }
- const id = initSegmentId(map);
- let storedMap = this.initSegments_[id];
- if (set && !storedMap && map.bytes) {
- // append WebVTT line terminators to the media initialization segment if it exists
- // to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that
- // requires two or more WebVTT line terminators between the WebVTT header and the
- // rest of the file
- const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;
- const combinedSegment = new Uint8Array(combinedByteLength);
- combinedSegment.set(map.bytes);
- combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);
- this.initSegments_[id] = storedMap = {
- resolvedUri: map.resolvedUri,
- byterange: map.byterange,
- bytes: combinedSegment
- };
- }
- return storedMap || map;
- }
- /**
- * Returns true if all configuration required for loading is present, otherwise false.
- *
- * @return {boolean} True if the all configuration is ready for loading
- * @private
- */
-
- couldBeginLoading_() {
- return this.playlist_ && this.subtitlesTrack_ && !this.paused();
- }
- /**
- * Once all the starting parameters have been specified, begin
- * operation. This method should only be invoked from the INIT
- * state.
- *
- * @private
- */
-
- init_() {
- this.state = 'READY';
- this.resetEverything();
- return this.monitorBuffer_();
- }
- /**
- * Set a subtitle track on the segment loader to add subtitles to
- *
- * @param {TextTrack=} track
- * The text track to add loaded subtitles to
- * @return {TextTrack}
- * Returns the subtitles track
- */
-
- track(track) {
- if (typeof track === 'undefined') {
- return this.subtitlesTrack_;
- }
- this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start
- // buffering now
-
- if (this.state === 'INIT' && this.couldBeginLoading_()) {
- this.init_();
- }
- return this.subtitlesTrack_;
- }
- /**
- * Remove any data in the source buffer between start and end times
- *
- * @param {number} start - the start time of the region to remove from the buffer
- * @param {number} end - the end time of the region to remove from the buffer
- */
-
- remove(start, end) {
- removeCuesFromTrack(start, end, this.subtitlesTrack_);
- }
- /**
- * fill the buffer with segements unless the sourceBuffers are
- * currently updating
- *
- * Note: this function should only ever be called by monitorBuffer_
- * and never directly
- *
- * @private
- */
-
- fillBuffer_() {
- // see if we need to begin loading immediately
- const segmentInfo = this.chooseNextRequest_();
- if (!segmentInfo) {
- return;
- }
- if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {
- // We don't have the timestamp offset that we need to sync subtitles.
- // Rerun on a timestamp offset or user interaction.
- const checkTimestampOffset = () => {
- this.state = 'READY';
- if (!this.paused()) {
- // if not paused, queue a buffer check as soon as possible
- this.monitorBuffer_();
- }
- };
- this.syncController_.one('timestampoffset', checkTimestampOffset);
- this.state = 'WAITING_ON_TIMELINE';
- return;
- }
- this.loadSegment_(segmentInfo);
- } // never set a timestamp offset for vtt segments.
-
- timestampOffsetForSegment_() {
- return null;
- }
- chooseNextRequest_() {
- return this.skipEmptySegments_(super.chooseNextRequest_());
- }
- /**
- * Prevents the segment loader from requesting segments we know contain no subtitles
- * by walking forward until we find the next segment that we don't know whether it is
- * empty or not.
- *
- * @param {Object} segmentInfo
- * a segment info object that describes the current segment
- * @return {Object}
- * a segment info object that describes the current segment
- */
-
- skipEmptySegments_(segmentInfo) {
- while (segmentInfo && segmentInfo.segment.empty) {
- // stop at the last possible segmentInfo
- if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {
- segmentInfo = null;
- break;
- }
- segmentInfo = this.generateSegmentInfo_({
- playlist: segmentInfo.playlist,
- mediaIndex: segmentInfo.mediaIndex + 1,
- startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,
- isSyncRequest: segmentInfo.isSyncRequest
- });
- }
- return segmentInfo;
- }
- stopForError(error) {
- this.error(error);
- this.state = 'READY';
- this.pause();
- this.trigger('error');
- }
- /**
- * append a decrypted segement to the SourceBuffer through a SourceUpdater
- *
- * @private
- */
-
- segmentRequestFinished_(error, simpleSegment, result) {
- if (!this.subtitlesTrack_) {
- this.state = 'READY';
- return;
- }
- this.saveTransferStats_(simpleSegment.stats); // the request was aborted
-
- if (!this.pendingSegment_) {
- this.state = 'READY';
- this.mediaRequestsAborted += 1;
- return;
- }
- if (error) {
- if (error.code === REQUEST_ERRORS.TIMEOUT) {
- this.handleTimeout_();
- }
- if (error.code === REQUEST_ERRORS.ABORTED) {
- this.mediaRequestsAborted += 1;
- } else {
- this.mediaRequestsErrored += 1;
- }
- this.stopForError(error);
- return;
- }
- const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to
- // maintain functionality between segment loaders
-
- this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache
-
- if (simpleSegment.key) {
- this.segmentKey(simpleSegment.key, true);
- }
- this.state = 'APPENDING'; // used for tests
-
- this.trigger('appending');
- const segment = segmentInfo.segment;
- if (segment.map) {
- segment.map.bytes = simpleSegment.map.bytes;
- }
- segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading
-
- if (typeof window.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {
- this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times
- // script will be loaded once but multiple listeners will be added to the queue, which is expected.
-
- this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({
- message: 'Error loading vtt.js',
- metadata: {
- errorType: videojs.Error.VttLoadError
- }
- }));
- return;
- }
- segment.requested = true;
- try {
- this.parseVTTCues_(segmentInfo);
- } catch (e) {
- this.stopForError({
- message: e.message,
- metadata: {
- errorType: videojs.Error.VttCueParsingError
- }
- });
- return;
- }
- this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);
- if (segmentInfo.cues.length) {
- segmentInfo.timingInfo = {
- start: segmentInfo.cues[0].startTime,
- end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime
- };
- } else {
- segmentInfo.timingInfo = {
- start: segmentInfo.startOfSegment,
- end: segmentInfo.startOfSegment + segmentInfo.duration
- };
- }
- if (segmentInfo.isSyncRequest) {
- this.trigger('syncinfoupdate');
- this.pendingSegment_ = null;
- this.state = 'READY';
- return;
- }
- segmentInfo.byteLength = segmentInfo.bytes.byteLength;
- this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to
- // the subtitle track
-
- segmentInfo.cues.forEach(cue => {
- this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);
- }); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows
- // cues to have identical time-intervals, but if the text is also identical
- // we can safely assume it is a duplicate that can be removed (ex. when a cue
- // "overlaps" VTT segments)
-
- removeDuplicateCuesFromTrack(this.subtitlesTrack_);
- this.handleAppendsDone_();
- }
- handleData_() {// noop as we shouldn't be getting video/audio data captions
- // that we do not support here.
- }
- updateTimingInfoEnd_() {// noop
- }
- /**
- * Uses the WebVTT parser to parse the segment response
- *
- * @throws NoVttJsError
- *
- * @param {Object} segmentInfo
- * a segment info object that describes the current segment
- * @private
- */
-
- parseVTTCues_(segmentInfo) {
- let decoder;
- let decodeBytesToString = false;
- if (typeof window.WebVTT !== 'function') {
- // caller is responsible for exception handling.
- throw new NoVttJsError();
- }
- if (typeof window.TextDecoder === 'function') {
- decoder = new window.TextDecoder('utf8');
- } else {
- decoder = window.WebVTT.StringDecoder();
- decodeBytesToString = true;
- }
- const parser = new window.WebVTT.Parser(window, window.vttjs, decoder);
- segmentInfo.cues = [];
- segmentInfo.timestampmap = {
- MPEGTS: 0,
- LOCAL: 0
- };
- parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);
- parser.ontimestampmap = map => {
- segmentInfo.timestampmap = map;
- };
- parser.onparsingerror = error => {
- videojs.log.warn('Error encountered when parsing cues: ' + error.message);
- };
- if (segmentInfo.segment.map) {
- let mapData = segmentInfo.segment.map.bytes;
- if (decodeBytesToString) {
- mapData = uint8ToUtf8(mapData);
- }
- parser.parse(mapData);
- }
- let segmentData = segmentInfo.bytes;
- if (decodeBytesToString) {
- segmentData = uint8ToUtf8(segmentData);
- }
- parser.parse(segmentData);
- parser.flush();
- }
- /**
- * Updates the start and end times of any cues parsed by the WebVTT parser using
- * the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping
- * from the SyncController
- *
- * @param {Object} segmentInfo
- * a segment info object that describes the current segment
- * @param {Object} mappingObj
- * object containing a mapping from TS to media time
- * @param {Object} playlist
- * the playlist object containing the segment
- * @private
- */
-
- updateTimeMapping_(segmentInfo, mappingObj, playlist) {
- const segment = segmentInfo.segment;
- if (!mappingObj) {
- // If the sync controller does not have a mapping of TS to Media Time for the
- // timeline, then we don't have enough information to update the cue
- // start/end times
- return;
- }
- if (!segmentInfo.cues.length) {
- // If there are no cues, we also do not have enough information to figure out
- // segment timing. Mark that the segment contains no cues so we don't re-request
- // an empty segment.
- segment.empty = true;
- return;
- }
- const {
- MPEGTS,
- LOCAL
- } = segmentInfo.timestampmap;
- /**
- * From the spec:
- * The MPEGTS media timestamp MUST use a 90KHz timescale,
- * even when non-WebVTT Media Segments use a different timescale.
- */
-
- const mpegTsInSeconds = MPEGTS / clock_1;
- const diff = mpegTsInSeconds - LOCAL + mappingObj.mapping;
- segmentInfo.cues.forEach(cue => {
- const duration = cue.endTime - cue.startTime;
- const startTime = MPEGTS === 0 ? cue.startTime + diff : this.handleRollover_(cue.startTime + diff, mappingObj.time);
- cue.startTime = Math.max(startTime, 0);
- cue.endTime = Math.max(startTime + duration, 0);
- });
- if (!playlist.syncInfo) {
- const firstStart = segmentInfo.cues[0].startTime;
- const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;
- playlist.syncInfo = {
- mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,
- time: Math.min(firstStart, lastStart - segment.duration)
- };
- }
- }
- /**
- * MPEG-TS PES timestamps are limited to 2^33.
- * Once they reach 2^33, they roll over to 0.
- * mux.js handles PES timestamp rollover for the following scenarios:
- * [forward rollover(right)] ->
- * PES timestamps monotonically increase, and once they reach 2^33, they roll over to 0
- * [backward rollover(left)] -->
- * we seek back to position before rollover.
- *
- * According to the HLS SPEC:
- * When synchronizing WebVTT with PES timestamps, clients SHOULD account
- * for cases where the 33-bit PES timestamps have wrapped and the WebVTT
- * cue times have not. When the PES timestamp wraps, the WebVTT Segment
- * SHOULD have a X-TIMESTAMP-MAP header that maps the current WebVTT
- * time to the new (low valued) PES timestamp.
- *
- * So we want to handle rollover here and align VTT Cue start/end time to the player's time.
- */
-
- handleRollover_(value, reference) {
- if (reference === null) {
- return value;
- }
- let valueIn90khz = value * clock_1;
- const referenceIn90khz = reference * clock_1;
- let offset;
- if (referenceIn90khz < valueIn90khz) {
- // - 2^33
- offset = -8589934592;
- } else {
- // + 2^33
- offset = 8589934592;
- } // distance(value - reference) > 2^32
-
- while (Math.abs(valueIn90khz - referenceIn90khz) > 4294967296) {
- valueIn90khz += offset;
- }
- return valueIn90khz / clock_1;
- }
- }
-
- /**
- * @file ad-cue-tags.js
- */
- /**
- * Searches for an ad cue that overlaps with the given mediaTime
- *
- * @param {Object} track
- * the track to find the cue for
- *
- * @param {number} mediaTime
- * the time to find the cue at
- *
- * @return {Object|null}
- * the found cue or null
- */
-
- const findAdCue = function (track, mediaTime) {
- const cues = track.cues;
- for (let i = 0; i < cues.length; i++) {
- const cue = cues[i];
- if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {
- return cue;
- }
- }
- return null;
- };
- const updateAdCues = function (media, track, offset = 0) {
- if (!media.segments) {
- return;
- }
- let mediaTime = offset;
- let cue;
- for (let i = 0; i < media.segments.length; i++) {
- const segment = media.segments[i];
- if (!cue) {
- // Since the cues will span for at least the segment duration, adding a fudge
- // factor of half segment duration will prevent duplicate cues from being
- // created when timing info is not exact (e.g. cue start time initialized
- // at 10.006677, but next call mediaTime is 10.003332 )
- cue = findAdCue(track, mediaTime + segment.duration / 2);
- }
- if (cue) {
- if ('cueIn' in segment) {
- // Found a CUE-IN so end the cue
- cue.endTime = mediaTime;
- cue.adEndTime = mediaTime;
- mediaTime += segment.duration;
- cue = null;
- continue;
- }
- if (mediaTime < cue.endTime) {
- // Already processed this mediaTime for this cue
- mediaTime += segment.duration;
- continue;
- } // otherwise extend cue until a CUE-IN is found
-
- cue.endTime += segment.duration;
- } else {
- if ('cueOut' in segment) {
- cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);
- cue.adStartTime = mediaTime; // Assumes tag format to be
- // #EXT-X-CUE-OUT:30
-
- cue.adEndTime = mediaTime + parseFloat(segment.cueOut);
- track.addCue(cue);
- }
- if ('cueOutCont' in segment) {
- // Entered into the middle of an ad cue
- // Assumes tag formate to be
- // #EXT-X-CUE-OUT-CONT:10/30
- const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);
- cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, '');
- cue.adStartTime = mediaTime - adOffset;
- cue.adEndTime = cue.adStartTime + adTotal;
- track.addCue(cue);
- }
- }
- mediaTime += segment.duration;
- }
- };
- class SyncInfo {
- /**
- * @param {number} start - media sequence start
- * @param {number} end - media sequence end
- * @param {number} segmentIndex - index for associated segment
- * @param {number|null} [partIndex] - index for associated part
- * @param {boolean} [appended] - appended indicator
- *
- */
- constructor({
- start,
- end,
- segmentIndex,
- partIndex = null,
- appended = false
- }) {
- this.start_ = start;
- this.end_ = end;
- this.segmentIndex_ = segmentIndex;
- this.partIndex_ = partIndex;
- this.appended_ = appended;
- }
- isInRange(targetTime) {
- return targetTime >= this.start && targetTime < this.end;
- }
- markAppended() {
- this.appended_ = true;
- }
- resetAppendedStatus() {
- this.appended_ = false;
- }
- get isAppended() {
- return this.appended_;
- }
- get start() {
- return this.start_;
- }
- get end() {
- return this.end_;
- }
- get segmentIndex() {
- return this.segmentIndex_;
- }
- get partIndex() {
- return this.partIndex_;
- }
- }
- class SyncInfoData {
- /**
- *
- * @param {SyncInfo} segmentSyncInfo - sync info for a given segment
- * @param {Array<SyncInfo>} [partsSyncInfo] - sync infos for a list of parts for a given segment
- */
- constructor(segmentSyncInfo, partsSyncInfo = []) {
- this.segmentSyncInfo_ = segmentSyncInfo;
- this.partsSyncInfo_ = partsSyncInfo;
- }
- get segmentSyncInfo() {
- return this.segmentSyncInfo_;
- }
- get partsSyncInfo() {
- return this.partsSyncInfo_;
- }
- get hasPartsSyncInfo() {
- return this.partsSyncInfo_.length > 0;
- }
- resetAppendStatus() {
- this.segmentSyncInfo_.resetAppendedStatus();
- this.partsSyncInfo_.forEach(partSyncInfo => partSyncInfo.resetAppendedStatus());
- }
- }
- class MediaSequenceSync {
- constructor() {
- /**
- * @type {Map<number, SyncInfoData>}
- * @private
- */
- this.storage_ = new Map();
- this.diagnostics_ = '';
- this.isReliable_ = false;
- this.start_ = -Infinity;
- this.end_ = Infinity;
- }
- get start() {
- return this.start_;
- }
- get end() {
- return this.end_;
- }
- get diagnostics() {
- return this.diagnostics_;
- }
- get isReliable() {
- return this.isReliable_;
- }
- resetAppendedStatus() {
- this.storage_.forEach(syncInfoData => syncInfoData.resetAppendStatus());
- }
- /**
- * update sync storage
- *
- * @param {Object} playlist
- * @param {number} currentTime
- *
- * @return {void}
- */
-
- update(playlist, currentTime) {
- const {
- mediaSequence,
- segments
- } = playlist;
- this.isReliable_ = this.isReliablePlaylist_(mediaSequence, segments);
- if (!this.isReliable_) {
- return;
- }
- return this.updateStorage_(segments, mediaSequence, this.calculateBaseTime_(mediaSequence, currentTime));
- }
- /**
- * @param {number} targetTime
- * @return {SyncInfo|null}
- */
-
- getSyncInfoForTime(targetTime) {
- for (const {
- segmentSyncInfo,
- partsSyncInfo
- } of this.storage_.values()) {
- // Normal segment flow:
- if (!partsSyncInfo.length) {
- if (segmentSyncInfo.isInRange(targetTime)) {
- return segmentSyncInfo;
- }
- } else {
- // Low latency flow:
- for (const partSyncInfo of partsSyncInfo) {
- if (partSyncInfo.isInRange(targetTime)) {
- return partSyncInfo;
- }
- }
- }
- }
- return null;
- }
- updateStorage_(segments, startingMediaSequence, startingTime) {
- const newStorage = new Map();
- let newDiagnostics = '\n';
- let currentStart = startingTime;
- let currentMediaSequence = startingMediaSequence;
- this.start_ = currentStart;
- segments.forEach((segment, segmentIndex) => {
- const prevSyncInfoData = this.storage_.get(currentMediaSequence);
- const segmentStart = currentStart;
- const segmentEnd = segmentStart + segment.duration;
- const segmentIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.segmentSyncInfo && prevSyncInfoData.segmentSyncInfo.isAppended);
- const segmentSyncInfo = new SyncInfo({
- start: segmentStart,
- end: segmentEnd,
- appended: segmentIsAppended,
- segmentIndex
- });
- segment.syncInfo = segmentSyncInfo;
- let currentPartStart = currentStart;
- const partsSyncInfo = (segment.parts || []).map((part, partIndex) => {
- const partStart = currentPartStart;
- const partEnd = currentPartStart + part.duration;
- const partIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.partsSyncInfo && prevSyncInfoData.partsSyncInfo[partIndex] && prevSyncInfoData.partsSyncInfo[partIndex].isAppended);
- const partSyncInfo = new SyncInfo({
- start: partStart,
- end: partEnd,
- appended: partIsAppended,
- segmentIndex,
- partIndex
- });
- currentPartStart = partEnd;
- newDiagnostics += `Media Sequence: ${currentMediaSequence}.${partIndex} | Range: ${partStart} --> ${partEnd} | Appended: ${partIsAppended}\n`;
- part.syncInfo = partSyncInfo;
- return partSyncInfo;
- });
- newStorage.set(currentMediaSequence, new SyncInfoData(segmentSyncInfo, partsSyncInfo));
- newDiagnostics += `${compactSegmentUrlDescription(segment.resolvedUri)} | Media Sequence: ${currentMediaSequence} | Range: ${segmentStart} --> ${segmentEnd} | Appended: ${segmentIsAppended}\n`;
- currentMediaSequence++;
- currentStart = segmentEnd;
- });
- this.end_ = currentStart;
- this.storage_ = newStorage;
- this.diagnostics_ = newDiagnostics;
- }
- calculateBaseTime_(mediaSequence, fallback) {
- if (!this.storage_.size) {
- // Initial setup flow.
- return 0;
- }
- if (this.storage_.has(mediaSequence)) {
- // Normal flow.
- return this.storage_.get(mediaSequence).segmentSyncInfo.start;
- } // Fallback flow.
- // There is a gap between last recorded playlist and a new one received.
-
- return fallback;
- }
- isReliablePlaylist_(mediaSequence, segments) {
- return mediaSequence !== undefined && mediaSequence !== null && Array.isArray(segments) && segments.length;
- }
- }
-
- /**
- * @file sync-controller.js
- */
- // synchronize expired playlist segments.
- // the max media sequence diff is 48 hours of live stream
- // content with two second segments. Anything larger than that
- // will likely be invalid.
-
- const MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;
- const syncPointStrategies = [
- // Stategy "VOD": Handle the VOD-case where the sync-point is *always*
- // the equivalence display-time 0 === segment-index 0
- {
- name: 'VOD',
- run: (syncController, playlist, duration, currentTimeline, currentTime) => {
- if (duration !== Infinity) {
- const syncPoint = {
- time: 0,
- segmentIndex: 0,
- partIndex: null
- };
- return syncPoint;
- }
- return null;
- }
- }, {
- name: 'MediaSequence',
- /**
- * run media sequence strategy
- *
- * @param {SyncController} syncController
- * @param {Object} playlist
- * @param {number} duration
- * @param {number} currentTimeline
- * @param {number} currentTime
- * @param {string} type
- */
- run: (syncController, playlist, duration, currentTimeline, currentTime, type) => {
- const mediaSequenceSync = syncController.getMediaSequenceSync(type);
- if (!mediaSequenceSync) {
- return null;
- }
- if (!mediaSequenceSync.isReliable) {
- return null;
- }
- const syncInfo = mediaSequenceSync.getSyncInfoForTime(currentTime);
- if (!syncInfo) {
- return null;
- }
- return {
- time: syncInfo.start,
- partIndex: syncInfo.partIndex,
- segmentIndex: syncInfo.segmentIndex
- };
- }
- },
- // Stategy "ProgramDateTime": We have a program-date-time tag in this playlist
- {
- name: 'ProgramDateTime',
- run: (syncController, playlist, duration, currentTimeline, currentTime) => {
- if (!Object.keys(syncController.timelineToDatetimeMappings).length) {
- return null;
- }
- let syncPoint = null;
- let lastDistance = null;
- const partsAndSegments = getPartsAndSegments(playlist);
- currentTime = currentTime || 0;
- for (let i = 0; i < partsAndSegments.length; i++) {
- // start from the end and loop backwards for live
- // or start from the front and loop forwards for non-live
- const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
- const partAndSegment = partsAndSegments[index];
- const segment = partAndSegment.segment;
- const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];
- if (!datetimeMapping || !segment.dateTimeObject) {
- continue;
- }
- const segmentTime = segment.dateTimeObject.getTime() / 1000;
- let start = segmentTime + datetimeMapping; // take part duration into account.
-
- if (segment.parts && typeof partAndSegment.partIndex === 'number') {
- for (let z = 0; z < partAndSegment.partIndex; z++) {
- start += segment.parts[z].duration;
- }
- }
- const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed
- // currentTime and can stop looking for better candidates
-
- if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {
- break;
- }
- lastDistance = distance;
- syncPoint = {
- time: start,
- segmentIndex: partAndSegment.segmentIndex,
- partIndex: partAndSegment.partIndex
- };
- }
- return syncPoint;
- }
- },
- // Stategy "Segment": We have a known time mapping for a timeline and a
- // segment in the current timeline with timing data
- {
- name: 'Segment',
- run: (syncController, playlist, duration, currentTimeline, currentTime) => {
- let syncPoint = null;
- let lastDistance = null;
- currentTime = currentTime || 0;
- const partsAndSegments = getPartsAndSegments(playlist);
- for (let i = 0; i < partsAndSegments.length; i++) {
- // start from the end and loop backwards for live
- // or start from the front and loop forwards for non-live
- const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
- const partAndSegment = partsAndSegments[index];
- const segment = partAndSegment.segment;
- const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;
- if (segment.timeline === currentTimeline && typeof start !== 'undefined') {
- const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed
- // currentTime and can stop looking for better candidates
-
- if (lastDistance !== null && lastDistance < distance) {
- break;
- }
- if (!syncPoint || lastDistance === null || lastDistance >= distance) {
- lastDistance = distance;
- syncPoint = {
- time: start,
- segmentIndex: partAndSegment.segmentIndex,
- partIndex: partAndSegment.partIndex
- };
- }
- }
- }
- return syncPoint;
- }
- },
- // Stategy "Discontinuity": We have a discontinuity with a known
- // display-time
- {
- name: 'Discontinuity',
- run: (syncController, playlist, duration, currentTimeline, currentTime) => {
- let syncPoint = null;
- currentTime = currentTime || 0;
- if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
- let lastDistance = null;
- for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
- const segmentIndex = playlist.discontinuityStarts[i];
- const discontinuity = playlist.discontinuitySequence + i + 1;
- const discontinuitySync = syncController.discontinuities[discontinuity];
- if (discontinuitySync) {
- const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed
- // currentTime and can stop looking for better candidates
-
- if (lastDistance !== null && lastDistance < distance) {
- break;
- }
- if (!syncPoint || lastDistance === null || lastDistance >= distance) {
- lastDistance = distance;
- syncPoint = {
- time: discontinuitySync.time,
- segmentIndex,
- partIndex: null
- };
- }
- }
- }
- }
- return syncPoint;
- }
- },
- // Stategy "Playlist": We have a playlist with a known mapping of
- // segment index to display time
- {
- name: 'Playlist',
- run: (syncController, playlist, duration, currentTimeline, currentTime) => {
- if (playlist.syncInfo) {
- const syncPoint = {
- time: playlist.syncInfo.time,
- segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,
- partIndex: null
- };
- return syncPoint;
- }
- return null;
- }
- }];
- class SyncController extends videojs.EventTarget {
- constructor(options = {}) {
- super(); // ...for synching across variants
-
- this.timelines = [];
- this.discontinuities = [];
- this.timelineToDatetimeMappings = {}; // TODO: this map should be only available for HLS. Since only HLS has MediaSequence.
- // For some reason this map helps with syncing between quality switch for MPEG-DASH as well.
- // Moreover if we disable this map for MPEG-DASH - quality switch will be broken.
- // MPEG-DASH should have its own separate sync strategy
-
- this.mediaSequenceStorage_ = {
- main: new MediaSequenceSync(),
- audio: new MediaSequenceSync(),
- vtt: new MediaSequenceSync()
- };
- this.logger_ = logger('SyncController');
- }
- /**
- *
- * @param {string} loaderType
- * @return {MediaSequenceSync|null}
- */
-
- getMediaSequenceSync(loaderType) {
- return this.mediaSequenceStorage_[loaderType] || null;
- }
- /**
- * Find a sync-point for the playlist specified
- *
- * A sync-point is defined as a known mapping from display-time to
- * a segment-index in the current playlist.
- *
- * @param {Playlist} playlist
- * The playlist that needs a sync-point
- * @param {number} duration
- * Duration of the MediaSource (Infinite if playing a live source)
- * @param {number} currentTimeline
- * The last timeline from which a segment was loaded
- * @param {number} currentTime
- * Current player's time
- * @param {string} type
- * Segment loader type
- * @return {Object}
- * A sync-point object
- */
-
- getSyncPoint(playlist, duration, currentTimeline, currentTime, type) {
- // Always use VOD sync point for VOD
- if (duration !== Infinity) {
- const vodSyncPointStrategy = syncPointStrategies.find(({
- name
- }) => name === 'VOD');
- return vodSyncPointStrategy.run(this, playlist, duration);
- }
- const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime, type);
- if (!syncPoints.length) {
- // Signal that we need to attempt to get a sync-point manually
- // by fetching a segment in the playlist and constructing
- // a sync-point from that information
- return null;
- } // If we have exact match just return it instead of finding the nearest distance
-
- for (const syncPointInfo of syncPoints) {
- const {
- syncPoint,
- strategy
- } = syncPointInfo;
- const {
- segmentIndex,
- time
- } = syncPoint;
- if (segmentIndex < 0) {
- continue;
- }
- const selectedSegment = playlist.segments[segmentIndex];
- const start = time;
- const end = start + selectedSegment.duration;
- this.logger_(`Strategy: ${strategy}. Current time: ${currentTime}. selected segment: ${segmentIndex}. Time: [${start} -> ${end}]}`);
- if (currentTime >= start && currentTime < end) {
- this.logger_('Found sync point with exact match: ', syncPoint);
- return syncPoint;
- }
- } // Now find the sync-point that is closest to the currentTime because
- // that should result in the most accurate guess about which segment
- // to fetch
-
- return this.selectSyncPoint_(syncPoints, {
- key: 'time',
- value: currentTime
- });
- }
- /**
- * Calculate the amount of time that has expired off the playlist during playback
- *
- * @param {Playlist} playlist
- * Playlist object to calculate expired from
- * @param {number} duration
- * Duration of the MediaSource (Infinity if playling a live source)
- * @return {number|null}
- * The amount of time that has expired off the playlist during playback. Null
- * if no sync-points for the playlist can be found.
- */
-
- getExpiredTime(playlist, duration) {
- if (!playlist || !playlist.segments) {
- return null;
- }
- const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time
-
- if (!syncPoints.length) {
- return null;
- }
- const syncPoint = this.selectSyncPoint_(syncPoints, {
- key: 'segmentIndex',
- value: 0
- }); // If the sync-point is beyond the start of the playlist, we want to subtract the
- // duration from index 0 to syncPoint.segmentIndex instead of adding.
-
- if (syncPoint.segmentIndex > 0) {
- syncPoint.time *= -1;
- }
- return Math.abs(syncPoint.time + sumDurations({
- defaultDuration: playlist.targetDuration,
- durationList: playlist.segments,
- startIndex: syncPoint.segmentIndex,
- endIndex: 0
- }));
- }
- /**
- * Runs each sync-point strategy and returns a list of sync-points returned by the
- * strategies
- *
- * @private
- * @param {Playlist} playlist
- * The playlist that needs a sync-point
- * @param {number} duration
- * Duration of the MediaSource (Infinity if playing a live source)
- * @param {number} currentTimeline
- * The last timeline from which a segment was loaded
- * @param {number} currentTime
- * Current player's time
- * @param {string} type
- * Segment loader type
- * @return {Array}
- * A list of sync-point objects
- */
-
- runStrategies_(playlist, duration, currentTimeline, currentTime, type) {
- const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...
-
- for (let i = 0; i < syncPointStrategies.length; i++) {
- const strategy = syncPointStrategies[i];
- const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime, type);
- if (syncPoint) {
- syncPoint.strategy = strategy.name;
- syncPoints.push({
- strategy: strategy.name,
- syncPoint
- });
- }
- }
- return syncPoints;
- }
- /**
- * Selects the sync-point nearest the specified target
- *
- * @private
- * @param {Array} syncPoints
- * List of sync-points to select from
- * @param {Object} target
- * Object specifying the property and value we are targeting
- * @param {string} target.key
- * Specifies the property to target. Must be either 'time' or 'segmentIndex'
- * @param {number} target.value
- * The value to target for the specified key.
- * @return {Object}
- * The sync-point nearest the target
- */
-
- selectSyncPoint_(syncPoints, target) {
- let bestSyncPoint = syncPoints[0].syncPoint;
- let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);
- let bestStrategy = syncPoints[0].strategy;
- for (let i = 1; i < syncPoints.length; i++) {
- const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);
- if (newDistance < bestDistance) {
- bestDistance = newDistance;
- bestSyncPoint = syncPoints[i].syncPoint;
- bestStrategy = syncPoints[i].strategy;
- }
- }
- this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');
- return bestSyncPoint;
- }
- /**
- * Save any meta-data present on the segments when segments leave
- * the live window to the playlist to allow for synchronization at the
- * playlist level later.
- *
- * @param {Playlist} oldPlaylist - The previous active playlist
- * @param {Playlist} newPlaylist - The updated and most current playlist
- */
-
- saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {
- const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps
-
- if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {
- videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);
- return;
- } // When a segment expires from the playlist and it has a start time
- // save that information as a possible sync-point reference in future
-
- for (let i = mediaSequenceDiff - 1; i >= 0; i--) {
- const lastRemovedSegment = oldPlaylist.segments[i];
- if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {
- newPlaylist.syncInfo = {
- mediaSequence: oldPlaylist.mediaSequence + i,
- time: lastRemovedSegment.start
- };
- this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);
- this.trigger('syncinfoupdate');
- break;
- }
- }
- }
- /**
- * Save the mapping from playlist's ProgramDateTime to display. This should only happen
- * before segments start to load.
- *
- * @param {Playlist} playlist - The currently active playlist
- */
-
- setDateTimeMappingForStart(playlist) {
- // It's possible for the playlist to be updated before playback starts, meaning time
- // zero is not yet set. If, during these playlist refreshes, a discontinuity is
- // crossed, then the old time zero mapping (for the prior timeline) would be retained
- // unless the mappings are cleared.
- this.timelineToDatetimeMappings = {};
- if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {
- const firstSegment = playlist.segments[0];
- const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;
- this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;
- }
- }
- /**
- * Calculates and saves timeline mappings, playlist sync info, and segment timing values
- * based on the latest timing information.
- *
- * @param {Object} options
- * Options object
- * @param {SegmentInfo} options.segmentInfo
- * The current active request information
- * @param {boolean} options.shouldSaveTimelineMapping
- * If there's a timeline change, determines if the timeline mapping should be
- * saved for timeline mapping and program date time mappings.
- */
-
- saveSegmentTimingInfo({
- segmentInfo,
- shouldSaveTimelineMapping
- }) {
- const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);
- const segment = segmentInfo.segment;
- if (didCalculateSegmentTimeMapping) {
- this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information
- // now with segment timing information
-
- if (!segmentInfo.playlist.syncInfo) {
- segmentInfo.playlist.syncInfo = {
- mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,
- time: segment.start
- };
- }
- }
- const dateTime = segment.dateTimeObject;
- if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {
- this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);
- }
- }
- timestampOffsetForTimeline(timeline) {
- if (typeof this.timelines[timeline] === 'undefined') {
- return null;
- }
- return this.timelines[timeline].time;
- }
- mappingForTimeline(timeline) {
- if (typeof this.timelines[timeline] === 'undefined') {
- return null;
- }
- return this.timelines[timeline].mapping;
- }
- /**
- * Use the "media time" for a segment to generate a mapping to "display time" and
- * save that display time to the segment.
- *
- * @private
- * @param {SegmentInfo} segmentInfo
- * The current active request information
- * @param {Object} timingInfo
- * The start and end time of the current segment in "media time"
- * @param {boolean} shouldSaveTimelineMapping
- * If there's a timeline change, determines if the timeline mapping should be
- * saved in timelines.
- * @return {boolean}
- * Returns false if segment time mapping could not be calculated
- */
-
- calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {
- // TODO: remove side effects
- const segment = segmentInfo.segment;
- const part = segmentInfo.part;
- let mappingObj = this.timelines[segmentInfo.timeline];
- let start;
- let end;
- if (typeof segmentInfo.timestampOffset === 'number') {
- mappingObj = {
- time: segmentInfo.startOfSegment,
- mapping: segmentInfo.startOfSegment - timingInfo.start
- };
- if (shouldSaveTimelineMapping) {
- this.timelines[segmentInfo.timeline] = mappingObj;
- this.trigger('timestampoffset');
- this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);
- }
- start = segmentInfo.startOfSegment;
- end = timingInfo.end + mappingObj.mapping;
- } else if (mappingObj) {
- start = timingInfo.start + mappingObj.mapping;
- end = timingInfo.end + mappingObj.mapping;
- } else {
- return false;
- }
- if (part) {
- part.start = start;
- part.end = end;
- } // If we don't have a segment start yet or the start value we got
- // is less than our current segment.start value, save a new start value.
- // We have to do this because parts will have segment timing info saved
- // multiple times and we want segment start to be the earliest part start
- // value for that segment.
-
- if (!segment.start || start < segment.start) {
- segment.start = start;
- }
- segment.end = end;
- return true;
- }
- /**
- * Each time we have discontinuity in the playlist, attempt to calculate the location
- * in display of the start of the discontinuity and save that. We also save an accuracy
- * value so that we save values with the most accuracy (closest to 0.)
- *
- * @private
- * @param {SegmentInfo} segmentInfo - The current active request information
- */
-
- saveDiscontinuitySyncInfo_(segmentInfo) {
- const playlist = segmentInfo.playlist;
- const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where
- // the start of the range and it's accuracy is 0 (greater accuracy values
- // mean more approximation)
-
- if (segment.discontinuity) {
- this.discontinuities[segment.timeline] = {
- time: segment.start,
- accuracy: 0
- };
- } else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
- // Search for future discontinuities that we can provide better timing
- // information for and save that information for sync purposes
- for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
- const segmentIndex = playlist.discontinuityStarts[i];
- const discontinuity = playlist.discontinuitySequence + i + 1;
- const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;
- const accuracy = Math.abs(mediaIndexDiff);
- if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {
- let time;
- if (mediaIndexDiff < 0) {
- time = segment.start - sumDurations({
- defaultDuration: playlist.targetDuration,
- durationList: playlist.segments,
- startIndex: segmentInfo.mediaIndex,
- endIndex: segmentIndex
- });
- } else {
- time = segment.end + sumDurations({
- defaultDuration: playlist.targetDuration,
- durationList: playlist.segments,
- startIndex: segmentInfo.mediaIndex + 1,
- endIndex: segmentIndex
- });
- }
- this.discontinuities[discontinuity] = {
- time,
- accuracy
- };
- }
- }
- }
- }
- dispose() {
- this.trigger('dispose');
- this.off();
- }
- }
-
- /**
- * The TimelineChangeController acts as a source for segment loaders to listen for and
- * keep track of latest and pending timeline changes. This is useful to ensure proper
- * sync, as each loader may need to make a consideration for what timeline the other
- * loader is on before making changes which could impact the other loader's media.
- *
- * @class TimelineChangeController
- * @extends videojs.EventTarget
- */
-
- class TimelineChangeController extends videojs.EventTarget {
- constructor() {
- super();
- this.pendingTimelineChanges_ = {};
- this.lastTimelineChanges_ = {};
- }
- clearPendingTimelineChange(type) {
- this.pendingTimelineChanges_[type] = null;
- this.trigger('pendingtimelinechange');
- }
- pendingTimelineChange({
- type,
- from,
- to
- }) {
- if (typeof from === 'number' && typeof to === 'number') {
- this.pendingTimelineChanges_[type] = {
- type,
- from,
- to
- };
- this.trigger('pendingtimelinechange');
- }
- return this.pendingTimelineChanges_[type];
- }
- lastTimelineChange({
- type,
- from,
- to
- }) {
- if (typeof from === 'number' && typeof to === 'number') {
- this.lastTimelineChanges_[type] = {
- type,
- from,
- to
- };
- delete this.pendingTimelineChanges_[type];
- this.trigger('timelinechange');
- }
- return this.lastTimelineChanges_[type];
- }
- dispose() {
- this.trigger('dispose');
- this.pendingTimelineChanges_ = {};
- this.lastTimelineChanges_ = {};
- this.off();
- }
- }
-
- /* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
- const workerCode = transform(getWorkerString(function () {
- /**
- * @file stream.js
- */
-
- /**
- * A lightweight readable stream implemention that handles event dispatching.
- *
- * @class Stream
- */
-
- var Stream = /*#__PURE__*/function () {
- function Stream() {
- this.listeners = {};
- }
- /**
- * Add a listener for a specified event type.
- *
- * @param {string} type the event name
- * @param {Function} listener the callback to be invoked when an event of
- * the specified type occurs
- */
-
- var _proto = Stream.prototype;
- _proto.on = function on(type, listener) {
- if (!this.listeners[type]) {
- this.listeners[type] = [];
- }
- this.listeners[type].push(listener);
- }
- /**
- * Remove a listener for a specified event type.
- *
- * @param {string} type the event name
- * @param {Function} listener a function previously registered for this
- * type of event through `on`
- * @return {boolean} if we could turn it off or not
- */;
-
- _proto.off = function off(type, listener) {
- if (!this.listeners[type]) {
- return false;
- }
- var index = this.listeners[type].indexOf(listener); // TODO: which is better?
- // In Video.js we slice listener functions
- // on trigger so that it does not mess up the order
- // while we loop through.
- //
- // Here we slice on off so that the loop in trigger
- // can continue using it's old reference to loop without
- // messing up the order.
-
- this.listeners[type] = this.listeners[type].slice(0);
- this.listeners[type].splice(index, 1);
- return index > -1;
- }
- /**
- * Trigger an event of the specified type on this stream. Any additional
- * arguments to this function are passed as parameters to event listeners.
- *
- * @param {string} type the event name
- */;
-
- _proto.trigger = function trigger(type) {
- var callbacks = this.listeners[type];
- if (!callbacks) {
- return;
- } // Slicing the arguments on every invocation of this method
- // can add a significant amount of overhead. Avoid the
- // intermediate object creation for the common case of a
- // single callback argument
-
- if (arguments.length === 2) {
- var length = callbacks.length;
- for (var i = 0; i < length; ++i) {
- callbacks[i].call(this, arguments[1]);
- }
- } else {
- var args = Array.prototype.slice.call(arguments, 1);
- var _length = callbacks.length;
- for (var _i = 0; _i < _length; ++_i) {
- callbacks[_i].apply(this, args);
- }
- }
- }
- /**
- * Destroys the stream and cleans up.
- */;
-
- _proto.dispose = function dispose() {
- this.listeners = {};
- }
- /**
- * Forwards all `data` events on this stream to the destination stream. The
- * destination stream should provide a method `push` to receive the data
- * events as they arrive.
- *
- * @param {Stream} destination the stream that will receive all `data` events
- * @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
- */;
-
- _proto.pipe = function pipe(destination) {
- this.on('data', function (data) {
- destination.push(data);
- });
- };
- return Stream;
- }();
- /*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */
-
- /**
- * Returns the subarray of a Uint8Array without PKCS#7 padding.
- *
- * @param padded {Uint8Array} unencrypted bytes that have been padded
- * @return {Uint8Array} the unpadded bytes
- * @see http://tools.ietf.org/html/rfc5652
- */
-
- function unpad(padded) {
- return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
- }
- /*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */
-
- /**
- * @file aes.js
- *
- * This file contains an adaptation of the AES decryption algorithm
- * from the Standford Javascript Cryptography Library. That work is
- * covered by the following copyright and permissions notice:
- *
- * Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are
- * met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
- * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
- * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
- * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
- * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * The views and conclusions contained in the software and documentation
- * are those of the authors and should not be interpreted as representing
- * official policies, either expressed or implied, of the authors.
- */
-
- /**
- * Expand the S-box tables.
- *
- * @private
- */
-
- const precompute = function () {
- const tables = [[[], [], [], [], []], [[], [], [], [], []]];
- const encTable = tables[0];
- const decTable = tables[1];
- const sbox = encTable[4];
- const sboxInv = decTable[4];
- let i;
- let x;
- let xInv;
- const d = [];
- const th = [];
- let x2;
- let x4;
- let x8;
- let s;
- let tEnc;
- let tDec; // Compute double and third tables
-
- for (i = 0; i < 256; i++) {
- th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;
- }
- for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {
- // Compute sbox
- s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;
- s = s >> 8 ^ s & 255 ^ 99;
- sbox[x] = s;
- sboxInv[s] = x; // Compute MixColumns
-
- x8 = d[x4 = d[x2 = d[x]]];
- tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
- tEnc = d[s] * 0x101 ^ s * 0x1010100;
- for (i = 0; i < 4; i++) {
- encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;
- decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;
- }
- } // Compactify. Considerable speedup on Firefox.
-
- for (i = 0; i < 5; i++) {
- encTable[i] = encTable[i].slice(0);
- decTable[i] = decTable[i].slice(0);
- }
- return tables;
- };
- let aesTables = null;
- /**
- * Schedule out an AES key for both encryption and decryption. This
- * is a low-level class. Use a cipher mode to do bulk encryption.
- *
- * @class AES
- * @param key {Array} The key as an array of 4, 6 or 8 words.
- */
-
- class AES {
- constructor(key) {
- /**
- * The expanded S-box and inverse S-box tables. These will be computed
- * on the client so that we don't have to send them down the wire.
- *
- * There are two tables, _tables[0] is for encryption and
- * _tables[1] is for decryption.
- *
- * The first 4 sub-tables are the expanded S-box with MixColumns. The
- * last (_tables[01][4]) is the S-box itself.
- *
- * @private
- */
- // if we have yet to precompute the S-box tables
- // do so now
- if (!aesTables) {
- aesTables = precompute();
- } // then make a copy of that object for use
-
- this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];
- let i;
- let j;
- let tmp;
- const sbox = this._tables[0][4];
- const decTable = this._tables[1];
- const keyLen = key.length;
- let rcon = 1;
- if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {
- throw new Error('Invalid aes key size');
- }
- const encKey = key.slice(0);
- const decKey = [];
- this._key = [encKey, decKey]; // schedule encryption keys
-
- for (i = keyLen; i < 4 * keyLen + 28; i++) {
- tmp = encKey[i - 1]; // apply sbox
-
- if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {
- tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon
-
- if (i % keyLen === 0) {
- tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;
- rcon = rcon << 1 ^ (rcon >> 7) * 283;
- }
- }
- encKey[i] = encKey[i - keyLen] ^ tmp;
- } // schedule decryption keys
-
- for (j = 0; i; j++, i--) {
- tmp = encKey[j & 3 ? i : i - 4];
- if (i <= 4 || j < 4) {
- decKey[j] = tmp;
- } else {
- decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];
- }
- }
- }
- /**
- * Decrypt 16 bytes, specified as four 32-bit words.
- *
- * @param {number} encrypted0 the first word to decrypt
- * @param {number} encrypted1 the second word to decrypt
- * @param {number} encrypted2 the third word to decrypt
- * @param {number} encrypted3 the fourth word to decrypt
- * @param {Int32Array} out the array to write the decrypted words
- * into
- * @param {number} offset the offset into the output array to start
- * writing results
- * @return {Array} The plaintext.
- */
-
- decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {
- const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data
-
- let a = encrypted0 ^ key[0];
- let b = encrypted3 ^ key[1];
- let c = encrypted2 ^ key[2];
- let d = encrypted1 ^ key[3];
- let a2;
- let b2;
- let c2; // key.length === 2 ?
-
- const nInnerRounds = key.length / 4 - 2;
- let i;
- let kIndex = 4;
- const table = this._tables[1]; // load up the tables
-
- const table0 = table[0];
- const table1 = table[1];
- const table2 = table[2];
- const table3 = table[3];
- const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.
-
- for (i = 0; i < nInnerRounds; i++) {
- a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];
- b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];
- c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];
- d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];
- kIndex += 4;
- a = a2;
- b = b2;
- c = c2;
- } // Last round.
-
- for (i = 0; i < 4; i++) {
- out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];
- a2 = a;
- a = b;
- b = c;
- c = d;
- d = a2;
- }
- }
- }
- /**
- * @file async-stream.js
- */
-
- /**
- * A wrapper around the Stream class to use setTimeout
- * and run stream "jobs" Asynchronously
- *
- * @class AsyncStream
- * @extends Stream
- */
-
- class AsyncStream extends Stream {
- constructor() {
- super(Stream);
- this.jobs = [];
- this.delay = 1;
- this.timeout_ = null;
- }
- /**
- * process an async job
- *
- * @private
- */
-
- processJob_() {
- this.jobs.shift()();
- if (this.jobs.length) {
- this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
- } else {
- this.timeout_ = null;
- }
- }
- /**
- * push a job into the stream
- *
- * @param {Function} job the job to push into the stream
- */
-
- push(job) {
- this.jobs.push(job);
- if (!this.timeout_) {
- this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
- }
- }
- }
- /**
- * @file decrypter.js
- *
- * An asynchronous implementation of AES-128 CBC decryption with
- * PKCS#7 padding.
- */
-
- /**
- * Convert network-order (big-endian) bytes into their little-endian
- * representation.
- */
-
- const ntoh = function (word) {
- return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;
- };
- /**
- * Decrypt bytes using AES-128 with CBC and PKCS#7 padding.
- *
- * @param {Uint8Array} encrypted the encrypted bytes
- * @param {Uint32Array} key the bytes of the decryption key
- * @param {Uint32Array} initVector the initialization vector (IV) to
- * use for the first round of CBC.
- * @return {Uint8Array} the decrypted bytes
- *
- * @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
- * @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29
- * @see https://tools.ietf.org/html/rfc2315
- */
-
- const decrypt = function (encrypted, key, initVector) {
- // word-level access to the encrypted bytes
- const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);
- const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output
-
- const decrypted = new Uint8Array(encrypted.byteLength);
- const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and
- // decrypted data
-
- let init0;
- let init1;
- let init2;
- let init3;
- let encrypted0;
- let encrypted1;
- let encrypted2;
- let encrypted3; // iteration variable
-
- let wordIx; // pull out the words of the IV to ensure we don't modify the
- // passed-in reference and easier access
-
- init0 = initVector[0];
- init1 = initVector[1];
- init2 = initVector[2];
- init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)
- // to each decrypted block
-
- for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {
- // convert big-endian (network order) words into little-endian
- // (javascript order)
- encrypted0 = ntoh(encrypted32[wordIx]);
- encrypted1 = ntoh(encrypted32[wordIx + 1]);
- encrypted2 = ntoh(encrypted32[wordIx + 2]);
- encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block
-
- decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the
- // plaintext
-
- decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);
- decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);
- decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);
- decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round
-
- init0 = encrypted0;
- init1 = encrypted1;
- init2 = encrypted2;
- init3 = encrypted3;
- }
- return decrypted;
- };
- /**
- * The `Decrypter` class that manages decryption of AES
- * data through `AsyncStream` objects and the `decrypt`
- * function
- *
- * @param {Uint8Array} encrypted the encrypted bytes
- * @param {Uint32Array} key the bytes of the decryption key
- * @param {Uint32Array} initVector the initialization vector (IV) to
- * @param {Function} done the function to run when done
- * @class Decrypter
- */
-
- class Decrypter {
- constructor(encrypted, key, initVector, done) {
- const step = Decrypter.STEP;
- const encrypted32 = new Int32Array(encrypted.buffer);
- const decrypted = new Uint8Array(encrypted.byteLength);
- let i = 0;
- this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously
-
- this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
- for (i = step; i < encrypted32.length; i += step) {
- initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);
- this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
- } // invoke the done() callback when everything is finished
-
- this.asyncStream_.push(function () {
- // remove pkcs#7 padding from the decrypted bytes
- done(null, unpad(decrypted));
- });
- }
- /**
- * a getter for step the maximum number of bytes to process at one time
- *
- * @return {number} the value of step 32000
- */
-
- static get STEP() {
- // 4 * 8000;
- return 32000;
- }
- /**
- * @private
- */
-
- decryptChunk_(encrypted, key, initVector, decrypted) {
- return function () {
- const bytes = decrypt(encrypted, key, initVector);
- decrypted.set(bytes, encrypted.byteOffset);
- };
- }
- }
- var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
- var win;
- if (typeof window !== "undefined") {
- win = window;
- } else if (typeof commonjsGlobal !== "undefined") {
- win = commonjsGlobal;
- } else if (typeof self !== "undefined") {
- win = self;
- } else {
- win = {};
- }
- var window_1 = win;
- var isArrayBufferView = function isArrayBufferView(obj) {
- if (ArrayBuffer.isView === 'function') {
- return ArrayBuffer.isView(obj);
- }
- return obj && obj.buffer instanceof ArrayBuffer;
- };
- var BigInt = window_1.BigInt || Number;
- [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
- (function () {
- var a = new Uint16Array([0xFFCC]);
- var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
- if (b[0] === 0xFF) {
- return 'big';
- }
- if (b[0] === 0xCC) {
- return 'little';
- }
- return 'unknown';
- })();
- /**
- * Creates an object for sending to a web worker modifying properties that are TypedArrays
- * into a new object with seperated properties for the buffer, byteOffset, and byteLength.
- *
- * @param {Object} message
- * Object of properties and values to send to the web worker
- * @return {Object}
- * Modified message with TypedArray values expanded
- * @function createTransferableMessage
- */
-
- const createTransferableMessage = function (message) {
- const transferable = {};
- Object.keys(message).forEach(key => {
- const value = message[key];
- if (isArrayBufferView(value)) {
- transferable[key] = {
- bytes: value.buffer,
- byteOffset: value.byteOffset,
- byteLength: value.byteLength
- };
- } else {
- transferable[key] = value;
- }
- });
- return transferable;
- };
- /* global self */
-
- /**
- * Our web worker interface so that things can talk to aes-decrypter
- * that will be running in a web worker. the scope is passed to this by
- * webworkify.
- */
-
- self.onmessage = function (event) {
- const data = event.data;
- const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);
- const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);
- const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);
- /* eslint-disable no-new, handle-callback-err */
-
- new Decrypter(encrypted, key, iv, function (err, bytes) {
- self.postMessage(createTransferableMessage({
- source: data.source,
- decrypted: bytes
- }), [bytes.buffer]);
- });
- /* eslint-enable */
- };
- }));
-
- var Decrypter = factory(workerCode);
- /* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
-
- /**
- * Convert the properties of an HLS track into an audioTrackKind.
- *
- * @private
- */
-
- const audioTrackKind_ = properties => {
- let kind = properties.default ? 'main' : 'alternative';
- if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {
- kind = 'main-desc';
- }
- return kind;
- };
- /**
- * Pause provided segment loader and playlist loader if active
- *
- * @param {SegmentLoader} segmentLoader
- * SegmentLoader to pause
- * @param {Object} mediaType
- * Active media type
- * @function stopLoaders
- */
-
- const stopLoaders = (segmentLoader, mediaType) => {
- segmentLoader.abort();
- segmentLoader.pause();
- if (mediaType && mediaType.activePlaylistLoader) {
- mediaType.activePlaylistLoader.pause();
- mediaType.activePlaylistLoader = null;
- }
- };
- /**
- * Start loading provided segment loader and playlist loader
- *
- * @param {PlaylistLoader} playlistLoader
- * PlaylistLoader to start loading
- * @param {Object} mediaType
- * Active media type
- * @function startLoaders
- */
-
- const startLoaders = (playlistLoader, mediaType) => {
- // Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the
- // playlist loader
- mediaType.activePlaylistLoader = playlistLoader;
- playlistLoader.load();
- };
- /**
- * Returns a function to be called when the media group changes. It performs a
- * non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a
- * change of group is merely a rendition switch of the same content at another encoding,
- * rather than a change of content, such as switching audio from English to Spanish.
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Handler for a non-destructive resync of SegmentLoader when the active media
- * group changes.
- * @function onGroupChanged
- */
-
- const onGroupChanged = (type, settings) => () => {
- const {
- segmentLoaders: {
- [type]: segmentLoader,
- main: mainSegmentLoader
- },
- mediaTypes: {
- [type]: mediaType
- }
- } = settings;
- const activeTrack = mediaType.activeTrack();
- const activeGroup = mediaType.getActiveGroup();
- const previousActiveLoader = mediaType.activePlaylistLoader;
- const lastGroup = mediaType.lastGroup_; // the group did not change do nothing
-
- if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {
- return;
- }
- mediaType.lastGroup_ = activeGroup;
- mediaType.lastTrack_ = activeTrack;
- stopLoaders(segmentLoader, mediaType);
- if (!activeGroup || activeGroup.isMainPlaylist) {
- // there is no group active or active group is a main playlist and won't change
- return;
- }
- if (!activeGroup.playlistLoader) {
- if (previousActiveLoader) {
- // The previous group had a playlist loader but the new active group does not
- // this means we are switching from demuxed to muxed audio. In this case we want to
- // do a destructive reset of the main segment loader and not restart the audio
- // loaders.
- mainSegmentLoader.resetEverything();
- }
- return;
- } // Non-destructive resync
-
- segmentLoader.resyncLoader();
- startLoaders(activeGroup.playlistLoader, mediaType);
- };
- const onGroupChanging = (type, settings) => () => {
- const {
- segmentLoaders: {
- [type]: segmentLoader
- },
- mediaTypes: {
- [type]: mediaType
- }
- } = settings;
- mediaType.lastGroup_ = null;
- segmentLoader.abort();
- segmentLoader.pause();
- };
- /**
- * Returns a function to be called when the media track changes. It performs a
- * destructive reset of the SegmentLoader to ensure we start loading as close to
- * currentTime as possible.
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Handler for a destructive reset of SegmentLoader when the active media
- * track changes.
- * @function onTrackChanged
- */
-
- const onTrackChanged = (type, settings) => () => {
- const {
- mainPlaylistLoader,
- segmentLoaders: {
- [type]: segmentLoader,
- main: mainSegmentLoader
- },
- mediaTypes: {
- [type]: mediaType
- }
- } = settings;
- const activeTrack = mediaType.activeTrack();
- const activeGroup = mediaType.getActiveGroup();
- const previousActiveLoader = mediaType.activePlaylistLoader;
- const lastTrack = mediaType.lastTrack_; // track did not change, do nothing
-
- if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {
- return;
- }
- mediaType.lastGroup_ = activeGroup;
- mediaType.lastTrack_ = activeTrack;
- stopLoaders(segmentLoader, mediaType);
- if (!activeGroup) {
- // there is no group active so we do not want to restart loaders
- return;
- }
- if (activeGroup.isMainPlaylist) {
- // track did not change, do nothing
- if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {
- return;
- }
- const pc = settings.vhs.playlistController_;
- const newPlaylist = pc.selectPlaylist(); // media will not change do nothing
-
- if (pc.media() === newPlaylist) {
- return;
- }
- mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);
- mainPlaylistLoader.pause();
- mainSegmentLoader.resetEverything();
- pc.fastQualityChange_(newPlaylist);
- return;
- }
- if (type === 'AUDIO') {
- if (!activeGroup.playlistLoader) {
- // when switching from demuxed audio/video to muxed audio/video (noted by no
- // playlist loader for the audio group), we want to do a destructive reset of the
- // main segment loader and not restart the audio loaders
- mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since
- // it should be stopped
-
- mainSegmentLoader.resetEverything();
- return;
- } // although the segment loader is an audio segment loader, call the setAudio
- // function to ensure it is prepared to re-append the init segment (or handle other
- // config changes)
-
- segmentLoader.setAudio(true);
- mainSegmentLoader.setAudio(false);
- }
- if (previousActiveLoader === activeGroup.playlistLoader) {
- // Nothing has actually changed. This can happen because track change events can fire
- // multiple times for a "single" change. One for enabling the new active track, and
- // one for disabling the track that was active
- startLoaders(activeGroup.playlistLoader, mediaType);
- return;
- }
- if (segmentLoader.track) {
- // For WebVTT, set the new text track in the segmentloader
- segmentLoader.track(activeTrack);
- } // destructive reset
-
- segmentLoader.resetEverything();
- startLoaders(activeGroup.playlistLoader, mediaType);
- };
- const onError = {
- /**
- * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
- * an error.
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Error handler. Logs warning (or error if the playlist is excluded) to
- * console and switches back to default audio track.
- * @function onError.AUDIO
- */
- AUDIO: (type, settings) => () => {
- const {
- mediaTypes: {
- [type]: mediaType
- },
- excludePlaylist
- } = settings; // switch back to default audio track
-
- const activeTrack = mediaType.activeTrack();
- const activeGroup = mediaType.activeGroup();
- const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;
- const defaultTrack = mediaType.tracks[id];
- if (activeTrack === defaultTrack) {
- // Default track encountered an error. All we can do now is exclude the current
- // rendition and hope another will switch audio groups
- excludePlaylist({
- error: {
- message: 'Problem encountered loading the default audio track.'
- }
- });
- return;
- }
- videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');
- for (const trackId in mediaType.tracks) {
- mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;
- }
- mediaType.onTrackChanged();
- },
- /**
- * Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
- * an error.
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Error handler. Logs warning to console and disables the active subtitle track
- * @function onError.SUBTITLES
- */
- SUBTITLES: (type, settings) => () => {
- const {
- mediaTypes: {
- [type]: mediaType
- }
- } = settings;
- videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');
- const track = mediaType.activeTrack();
- if (track) {
- track.mode = 'disabled';
- }
- mediaType.onTrackChanged();
- }
- };
- const setupListeners = {
- /**
- * Setup event listeners for audio playlist loader
- *
- * @param {string} type
- * MediaGroup type
- * @param {PlaylistLoader|null} playlistLoader
- * PlaylistLoader to register listeners on
- * @param {Object} settings
- * Object containing required information for media groups
- * @function setupListeners.AUDIO
- */
- AUDIO: (type, playlistLoader, settings) => {
- if (!playlistLoader) {
- // no playlist loader means audio will be muxed with the video
- return;
- }
- const {
- tech,
- requestOptions,
- segmentLoaders: {
- [type]: segmentLoader
- }
- } = settings;
- playlistLoader.on('loadedmetadata', () => {
- const media = playlistLoader.media();
- segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload
- // permits, start downloading segments
-
- if (!tech.paused() || media.endList && tech.preload() !== 'none') {
- segmentLoader.load();
- }
- });
- playlistLoader.on('loadedplaylist', () => {
- segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
-
- if (!tech.paused()) {
- segmentLoader.load();
- }
- });
- playlistLoader.on('error', onError[type](type, settings));
- },
- /**
- * Setup event listeners for subtitle playlist loader
- *
- * @param {string} type
- * MediaGroup type
- * @param {PlaylistLoader|null} playlistLoader
- * PlaylistLoader to register listeners on
- * @param {Object} settings
- * Object containing required information for media groups
- * @function setupListeners.SUBTITLES
- */
- SUBTITLES: (type, playlistLoader, settings) => {
- const {
- tech,
- requestOptions,
- segmentLoaders: {
- [type]: segmentLoader
- },
- mediaTypes: {
- [type]: mediaType
- }
- } = settings;
- playlistLoader.on('loadedmetadata', () => {
- const media = playlistLoader.media();
- segmentLoader.playlist(media, requestOptions);
- segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload
- // permits, start downloading segments
-
- if (!tech.paused() || media.endList && tech.preload() !== 'none') {
- segmentLoader.load();
- }
- });
- playlistLoader.on('loadedplaylist', () => {
- segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
-
- if (!tech.paused()) {
- segmentLoader.load();
- }
- });
- playlistLoader.on('error', onError[type](type, settings));
- }
- };
- const initialize = {
- /**
- * Setup PlaylistLoaders and AudioTracks for the audio groups
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @function initialize.AUDIO
- */
- 'AUDIO': (type, settings) => {
- const {
- vhs,
- sourceType,
- segmentLoaders: {
- [type]: segmentLoader
- },
- requestOptions,
- main: {
- mediaGroups
- },
- mediaTypes: {
- [type]: {
- groups,
- tracks,
- logger_
- }
- },
- mainPlaylistLoader
- } = settings;
- const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none
-
- if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {
- mediaGroups[type] = {
- main: {
- default: {
- default: true
- }
- }
- };
- if (audioOnlyMain) {
- mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;
- }
- }
- for (const groupId in mediaGroups[type]) {
- if (!groups[groupId]) {
- groups[groupId] = [];
- }
- for (const variantLabel in mediaGroups[type][groupId]) {
- let properties = mediaGroups[type][groupId][variantLabel];
- let playlistLoader;
- if (audioOnlyMain) {
- logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);
- properties.isMainPlaylist = true;
- playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,
- // use the resolved media playlist object
- } else if (sourceType === 'vhs-json' && properties.playlists) {
- playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);
- } else if (properties.resolvedUri) {
- playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists
- // should we even have properties.playlists in this check.
- } else if (properties.playlists && sourceType === 'dash') {
- playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
- } else {
- // no resolvedUri means the audio is muxed with the video when using this
- // audio track
- playlistLoader = null;
- }
- properties = merge({
- id: variantLabel,
- playlistLoader
- }, properties);
- setupListeners[type](type, properties.playlistLoader, settings);
- groups[groupId].push(properties);
- if (typeof tracks[variantLabel] === 'undefined') {
- const track = new videojs.AudioTrack({
- id: variantLabel,
- kind: audioTrackKind_(properties),
- enabled: false,
- language: properties.language,
- default: properties.default,
- label: variantLabel
- });
- tracks[variantLabel] = track;
- }
- }
- } // setup single error event handler for the segment loader
-
- segmentLoader.on('error', onError[type](type, settings));
- },
- /**
- * Setup PlaylistLoaders and TextTracks for the subtitle groups
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @function initialize.SUBTITLES
- */
- 'SUBTITLES': (type, settings) => {
- const {
- tech,
- vhs,
- sourceType,
- segmentLoaders: {
- [type]: segmentLoader
- },
- requestOptions,
- main: {
- mediaGroups
- },
- mediaTypes: {
- [type]: {
- groups,
- tracks
- }
- },
- mainPlaylistLoader
- } = settings;
- for (const groupId in mediaGroups[type]) {
- if (!groups[groupId]) {
- groups[groupId] = [];
- }
- for (const variantLabel in mediaGroups[type][groupId]) {
- if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {
- // Subtitle playlists with the forced attribute are not selectable in Safari.
- // According to Apple's HLS Authoring Specification:
- // If content has forced subtitles and regular subtitles in a given language,
- // the regular subtitles track in that language MUST contain both the forced
- // subtitles and the regular subtitles for that language.
- // Because of this requirement and that Safari does not add forced subtitles,
- // forced subtitles are skipped here to maintain consistent experience across
- // all platforms
- continue;
- }
- let properties = mediaGroups[type][groupId][variantLabel];
- let playlistLoader;
- if (sourceType === 'hls') {
- playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);
- } else if (sourceType === 'dash') {
- const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);
- if (!playlists.length) {
- return;
- }
- playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
- } else if (sourceType === 'vhs-json') {
- playlistLoader = new PlaylistLoader(
- // if the vhs-json object included the media playlist, use the media playlist
- // as provided, otherwise use the resolved URI to load the playlist
- properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);
- }
- properties = merge({
- id: variantLabel,
- playlistLoader
- }, properties);
- setupListeners[type](type, properties.playlistLoader, settings);
- groups[groupId].push(properties);
- if (typeof tracks[variantLabel] === 'undefined') {
- const track = tech.addRemoteTextTrack({
- id: variantLabel,
- kind: 'subtitles',
- default: properties.default && properties.autoselect,
- language: properties.language,
- label: variantLabel
- }, false).track;
- tracks[variantLabel] = track;
- }
- }
- } // setup single error event handler for the segment loader
-
- segmentLoader.on('error', onError[type](type, settings));
- },
- /**
- * Setup TextTracks for the closed-caption groups
- *
- * @param {String} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @function initialize['CLOSED-CAPTIONS']
- */
- 'CLOSED-CAPTIONS': (type, settings) => {
- const {
- tech,
- main: {
- mediaGroups
- },
- mediaTypes: {
- [type]: {
- groups,
- tracks
- }
- }
- } = settings;
- for (const groupId in mediaGroups[type]) {
- if (!groups[groupId]) {
- groups[groupId] = [];
- }
- for (const variantLabel in mediaGroups[type][groupId]) {
- const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services
-
- if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {
- continue;
- }
- const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
- let newProps = {
- label: variantLabel,
- language: properties.language,
- instreamId: properties.instreamId,
- default: properties.default && properties.autoselect
- };
- if (captionServices[newProps.instreamId]) {
- newProps = merge(newProps, captionServices[newProps.instreamId]);
- }
- if (newProps.default === undefined) {
- delete newProps.default;
- } // No PlaylistLoader is required for Closed-Captions because the captions are
- // embedded within the video stream
-
- groups[groupId].push(merge({
- id: variantLabel
- }, properties));
- if (typeof tracks[variantLabel] === 'undefined') {
- const track = tech.addRemoteTextTrack({
- id: newProps.instreamId,
- kind: 'captions',
- default: newProps.default,
- language: newProps.language,
- label: newProps.label
- }, false).track;
- tracks[variantLabel] = track;
- }
- }
- }
- }
- };
- const groupMatch = (list, media) => {
- for (let i = 0; i < list.length; i++) {
- if (playlistMatch(media, list[i])) {
- return true;
- }
- if (list[i].playlists && groupMatch(list[i].playlists, media)) {
- return true;
- }
- }
- return false;
- };
- /**
- * Returns a function used to get the active group of the provided type
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Function that returns the active media group for the provided type. Takes an
- * optional parameter {TextTrack} track. If no track is provided, a list of all
- * variants in the group, otherwise the variant corresponding to the provided
- * track is returned.
- * @function activeGroup
- */
-
- const activeGroup = (type, settings) => track => {
- const {
- mainPlaylistLoader,
- mediaTypes: {
- [type]: {
- groups
- }
- }
- } = settings;
- const media = mainPlaylistLoader.media();
- if (!media) {
- return null;
- }
- let variants = null; // set to variants to main media active group
-
- if (media.attributes[type]) {
- variants = groups[media.attributes[type]];
- }
- const groupKeys = Object.keys(groups);
- if (!variants) {
- // find the mainPlaylistLoader media
- // that is in a media group if we are dealing
- // with audio only
- if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {
- for (let i = 0; i < groupKeys.length; i++) {
- const groupPropertyList = groups[groupKeys[i]];
- if (groupMatch(groupPropertyList, media)) {
- variants = groupPropertyList;
- break;
- }
- } // use the main group if it exists
- } else if (groups.main) {
- variants = groups.main; // only one group, use that one
- } else if (groupKeys.length === 1) {
- variants = groups[groupKeys[0]];
- }
- }
- if (typeof track === 'undefined') {
- return variants;
- }
- if (track === null || !variants) {
- // An active track was specified so a corresponding group is expected. track === null
- // means no track is currently active so there is no corresponding group
- return null;
- }
- return variants.filter(props => props.id === track.id)[0] || null;
- };
- const activeTrack = {
- /**
- * Returns a function used to get the active track of type provided
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Function that returns the active media track for the provided type. Returns
- * null if no track is active
- * @function activeTrack.AUDIO
- */
- AUDIO: (type, settings) => () => {
- const {
- mediaTypes: {
- [type]: {
- tracks
- }
- }
- } = settings;
- for (const id in tracks) {
- if (tracks[id].enabled) {
- return tracks[id];
- }
- }
- return null;
- },
- /**
- * Returns a function used to get the active track of type provided
- *
- * @param {string} type
- * MediaGroup type
- * @param {Object} settings
- * Object containing required information for media groups
- * @return {Function}
- * Function that returns the active media track for the provided type. Returns
- * null if no track is active
- * @function activeTrack.SUBTITLES
- */
- SUBTITLES: (type, settings) => () => {
- const {
- mediaTypes: {
- [type]: {
- tracks
- }
- }
- } = settings;
- for (const id in tracks) {
- if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {
- return tracks[id];
- }
- }
- return null;
- }
- };
- const getActiveGroup = (type, {
- mediaTypes
- }) => () => {
- const activeTrack_ = mediaTypes[type].activeTrack();
- if (!activeTrack_) {
- return null;
- }
- return mediaTypes[type].activeGroup(activeTrack_);
- };
- /**
- * Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,
- * Closed-Captions) specified in the main manifest.
- *
- * @param {Object} settings
- * Object containing required information for setting up the media groups
- * @param {Tech} settings.tech
- * The tech of the player
- * @param {Object} settings.requestOptions
- * XHR request options used by the segment loaders
- * @param {PlaylistLoader} settings.mainPlaylistLoader
- * PlaylistLoader for the main source
- * @param {VhsHandler} settings.vhs
- * VHS SourceHandler
- * @param {Object} settings.main
- * The parsed main manifest
- * @param {Object} settings.mediaTypes
- * Object to store the loaders, tracks, and utility methods for each media type
- * @param {Function} settings.excludePlaylist
- * Excludes the current rendition and forces a rendition switch.
- * @function setupMediaGroups
- */
-
- const setupMediaGroups = settings => {
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
- initialize[type](type, settings);
- });
- const {
- mediaTypes,
- mainPlaylistLoader,
- tech,
- vhs,
- segmentLoaders: {
- ['AUDIO']: audioSegmentLoader,
- main: mainSegmentLoader
- }
- } = settings; // setup active group and track getters and change event handlers
-
- ['AUDIO', 'SUBTITLES'].forEach(type => {
- mediaTypes[type].activeGroup = activeGroup(type, settings);
- mediaTypes[type].activeTrack = activeTrack[type](type, settings);
- mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);
- mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);
- mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);
- mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);
- }); // DO NOT enable the default subtitle or caption track.
- // DO enable the default audio track
-
- const audioGroup = mediaTypes.AUDIO.activeGroup();
- if (audioGroup) {
- const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;
- mediaTypes.AUDIO.tracks[groupId].enabled = true;
- mediaTypes.AUDIO.onGroupChanged();
- mediaTypes.AUDIO.onTrackChanged();
- const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the
- // track is changed, but needs to be handled here since the track may not be considered
- // changed on the first call to onTrackChanged
-
- if (!activeAudioGroup.playlistLoader) {
- // either audio is muxed with video or the stream is audio only
- mainSegmentLoader.setAudio(true);
- } else {
- // audio is demuxed
- mainSegmentLoader.setAudio(false);
- audioSegmentLoader.setAudio(true);
- }
- }
- mainPlaylistLoader.on('mediachange', () => {
- ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());
- });
- mainPlaylistLoader.on('mediachanging', () => {
- ['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());
- }); // custom audio track change event handler for usage event
-
- const onAudioTrackChanged = () => {
- mediaTypes.AUDIO.onTrackChanged();
- tech.trigger({
- type: 'usage',
- name: 'vhs-audio-change'
- });
- };
- tech.audioTracks().addEventListener('change', onAudioTrackChanged);
- tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
- vhs.on('dispose', () => {
- tech.audioTracks().removeEventListener('change', onAudioTrackChanged);
- tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
- }); // clear existing audio tracks and add the ones we just created
-
- tech.clearTracks('audio');
- for (const id in mediaTypes.AUDIO.tracks) {
- tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);
- }
- };
- /**
- * Creates skeleton object used to store the loaders, tracks, and utility methods for each
- * media type
- *
- * @return {Object}
- * Object to store the loaders, tracks, and utility methods for each media type
- * @function createMediaTypes
- */
-
- const createMediaTypes = () => {
- const mediaTypes = {};
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
- mediaTypes[type] = {
- groups: {},
- tracks: {},
- activePlaylistLoader: null,
- activeGroup: noop,
- activeTrack: noop,
- getActiveGroup: noop,
- onGroupChanged: noop,
- onTrackChanged: noop,
- lastTrack_: null,
- logger_: logger(`MediaGroups[${type}]`)
- };
- });
- return mediaTypes;
- };
-
- /**
- * A utility class for setting properties and maintaining the state of the content steering manifest.
- *
- * Content Steering manifest format:
- * VERSION: number (required) currently only version 1 is supported.
- * TTL: number in seconds (optional) until the next content steering manifest reload.
- * RELOAD-URI: string (optional) uri to fetch the next content steering manifest.
- * SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.
- * PATHWAY-CLONES: array (optional) (HLS only) pathway clone objects to copy from other playlists.
- */
-
- class SteeringManifest {
- constructor() {
- this.priority_ = [];
- this.pathwayClones_ = new Map();
- }
- set version(number) {
- // Only version 1 is currently supported for both DASH and HLS.
- if (number === 1) {
- this.version_ = number;
- }
- }
- set ttl(seconds) {
- // TTL = time-to-live, default = 300 seconds.
- this.ttl_ = seconds || 300;
- }
- set reloadUri(uri) {
- if (uri) {
- // reload URI can be relative to the previous reloadUri.
- this.reloadUri_ = resolveUrl(this.reloadUri_, uri);
- }
- }
- set priority(array) {
- // priority must be non-empty and unique values.
- if (array && array.length) {
- this.priority_ = array;
- }
- }
- set pathwayClones(array) {
- // pathwayClones must be non-empty.
- if (array && array.length) {
- this.pathwayClones_ = new Map(array.map(clone => [clone.ID, clone]));
- }
- }
- get version() {
- return this.version_;
- }
- get ttl() {
- return this.ttl_;
- }
- get reloadUri() {
- return this.reloadUri_;
- }
- get priority() {
- return this.priority_;
- }
- get pathwayClones() {
- return this.pathwayClones_;
- }
- }
- /**
- * This class represents a content steering manifest and associated state. See both HLS and DASH specifications.
- * HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and
- * https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.
- * DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
- *
- * @param {function} xhr for making a network request from the browser.
- * @param {function} bandwidth for fetching the current bandwidth from the main segment loader.
- */
-
- class ContentSteeringController extends videojs.EventTarget {
- constructor(xhr, bandwidth) {
- super();
- this.currentPathway = null;
- this.defaultPathway = null;
- this.queryBeforeStart = false;
- this.availablePathways_ = new Set();
- this.steeringManifest = new SteeringManifest();
- this.proxyServerUrl_ = null;
- this.manifestType_ = null;
- this.ttlTimeout_ = null;
- this.request_ = null;
- this.currentPathwayClones = new Map();
- this.nextPathwayClones = new Map();
- this.excludedSteeringManifestURLs = new Set();
- this.logger_ = logger('Content Steering');
- this.xhr_ = xhr;
- this.getBandwidth_ = bandwidth;
- }
- /**
- * Assigns the content steering tag properties to the steering controller
- *
- * @param {string} baseUrl the baseURL from the main manifest for resolving the steering manifest url
- * @param {Object} steeringTag the content steering tag from the main manifest
- */
-
- assignTagProperties(baseUrl, steeringTag) {
- this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH
-
- const steeringUri = steeringTag.serverUri || steeringTag.serverURL;
- if (!steeringUri) {
- this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);
- this.trigger('error');
- return;
- } // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.
-
- if (steeringUri.startsWith('data:')) {
- this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));
- return;
- } // reloadUri is the resolution of the main manifest URL and steering URL.
-
- this.steeringManifest.reloadUri = resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH
-
- this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on <ContentSteering> tags.
-
- this.queryBeforeStart = steeringTag.queryBeforeStart;
- this.proxyServerUrl_ = steeringTag.proxyServerURL; // trigger a steering event if we have a pathway from the content steering tag.
- // this tells VHS which segment pathway to start with.
- // If queryBeforeStart is true we need to wait for the steering manifest response.
-
- if (this.defaultPathway && !this.queryBeforeStart) {
- this.trigger('content-steering');
- }
- }
- /**
- * Requests the content steering manifest and parse the response. This should only be called after
- * assignTagProperties was called with a content steering tag.
- *
- * @param {string} initialUri The optional uri to make the request with.
- * If set, the request should be made with exactly what is passed in this variable.
- * This scenario should only happen once on initalization.
- */
-
- requestSteeringManifest(initial) {
- const reloadUri = this.steeringManifest.reloadUri;
- if (!reloadUri) {
- return;
- } // We currently don't support passing MPD query parameters directly to the content steering URL as this requires
- // ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.
- // This request URI accounts for manifest URIs that have been excluded.
-
- const uri = initial ? reloadUri : this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.
-
- if (!uri) {
- this.logger_('No valid content steering manifest URIs. Stopping content steering.');
- this.trigger('error');
- this.dispose();
- return;
- }
- this.request_ = this.xhr_({
- uri,
- requestType: 'content-steering-manifest'
- }, (error, errorInfo) => {
- if (error) {
- // If the client receives HTTP 410 Gone in response to a manifest request,
- // it MUST NOT issue another request for that URI for the remainder of the
- // playback session. It MAY continue to use the most-recently obtained set
- // of Pathways.
- if (errorInfo.status === 410) {
- this.logger_(`manifest request 410 ${error}.`);
- this.logger_(`There will be no more content steering requests to ${uri} this session.`);
- this.excludedSteeringManifestURLs.add(uri);
- return;
- } // If the client receives HTTP 429 Too Many Requests with a Retry-After
- // header in response to a manifest request, it SHOULD wait until the time
- // specified by the Retry-After header to reissue the request.
-
- if (errorInfo.status === 429) {
- const retrySeconds = errorInfo.responseHeaders['retry-after'];
- this.logger_(`manifest request 429 ${error}.`);
- this.logger_(`content steering will retry in ${retrySeconds} seconds.`);
- this.startTTLTimeout_(parseInt(retrySeconds, 10));
- return;
- } // If the Steering Manifest cannot be loaded and parsed correctly, the
- // client SHOULD continue to use the previous values and attempt to reload
- // it after waiting for the previously-specified TTL (or 5 minutes if
- // none).
-
- this.logger_(`manifest failed to load ${error}.`);
- this.startTTLTimeout_();
- return;
- }
- const steeringManifestJson = JSON.parse(this.request_.responseText);
- this.assignSteeringProperties_(steeringManifestJson);
- this.startTTLTimeout_();
- });
- }
- /**
- * Set the proxy server URL and add the steering manifest url as a URI encoded parameter.
- *
- * @param {string} steeringUrl the steering manifest url
- * @return the steering manifest url to a proxy server with all parameters set
- */
-
- setProxyServerUrl_(steeringUrl) {
- const steeringUrlObject = new window.URL(steeringUrl);
- const proxyServerUrlObject = new window.URL(this.proxyServerUrl_);
- proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));
- return this.setSteeringParams_(proxyServerUrlObject.toString());
- }
- /**
- * Decodes and parses the data uri encoded steering manifest
- *
- * @param {string} dataUri the data uri to be decoded and parsed.
- */
-
- decodeDataUriManifest_(dataUri) {
- const steeringManifestJson = JSON.parse(window.atob(dataUri));
- this.assignSteeringProperties_(steeringManifestJson);
- }
- /**
- * Set the HLS or DASH content steering manifest request query parameters. For example:
- * _HLS_pathway="<CURRENT-PATHWAY-ID>" and _HLS_throughput=<THROUGHPUT>
- * _DASH_pathway and _DASH_throughput
- *
- * @param {string} uri to add content steering server parameters to.
- * @return a new uri as a string with the added steering query parameters.
- */
-
- setSteeringParams_(url) {
- const urlObject = new window.URL(url);
- const path = this.getPathway();
- const networkThroughput = this.getBandwidth_();
- if (path) {
- const pathwayKey = `_${this.manifestType_}_pathway`;
- urlObject.searchParams.set(pathwayKey, path);
- }
- if (networkThroughput) {
- const throughputKey = `_${this.manifestType_}_throughput`;
- urlObject.searchParams.set(throughputKey, networkThroughput);
- }
- return urlObject.toString();
- }
- /**
- * Assigns the current steering manifest properties and to the SteeringManifest object
- *
- * @param {Object} steeringJson the raw JSON steering manifest
- */
-
- assignSteeringProperties_(steeringJson) {
- this.steeringManifest.version = steeringJson.VERSION;
- if (!this.steeringManifest.version) {
- this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);
- this.trigger('error');
- return;
- }
- this.steeringManifest.ttl = steeringJson.TTL;
- this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional
-
- this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // Pathway clones to be created/updated in HLS.
- // See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
-
- this.steeringManifest.pathwayClones = steeringJson['PATHWAY-CLONES'];
- this.nextPathwayClones = this.steeringManifest.pathwayClones; // 1. apply first pathway from the array.
- // 2. if first pathway doesn't exist in manifest, try next pathway.
- // a. if all pathways are exhausted, ignore the steering manifest priority.
- // 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.
- // a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,
- // the excluded pathway will be ignored.
- // See excludePathway usage in excludePlaylist().
- // If there are no available pathways, we need to stop content steering.
-
- if (!this.availablePathways_.size) {
- this.logger_('There are no available pathways for content steering. Ending content steering.');
- this.trigger('error');
- this.dispose();
- }
- const chooseNextPathway = pathwaysByPriority => {
- for (const path of pathwaysByPriority) {
- if (this.availablePathways_.has(path)) {
- return path;
- }
- } // If no pathway matches, ignore the manifest and choose the first available.
-
- return [...this.availablePathways_][0];
- };
- const nextPathway = chooseNextPathway(this.steeringManifest.priority);
- if (this.currentPathway !== nextPathway) {
- this.currentPathway = nextPathway;
- this.trigger('content-steering');
- }
- }
- /**
- * Returns the pathway to use for steering decisions
- *
- * @return {string} returns the current pathway or the default
- */
-
- getPathway() {
- return this.currentPathway || this.defaultPathway;
- }
- /**
- * Chooses the manifest request URI based on proxy URIs and server URLs.
- * Also accounts for exclusion on certain manifest URIs.
- *
- * @param {string} reloadUri the base uri before parameters
- *
- * @return {string} the final URI for the request to the manifest server.
- */
-
- getRequestURI(reloadUri) {
- if (!reloadUri) {
- return null;
- }
- const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);
- if (this.proxyServerUrl_) {
- const proxyURI = this.setProxyServerUrl_(reloadUri);
- if (!isExcluded(proxyURI)) {
- return proxyURI;
- }
- }
- const steeringURI = this.setSteeringParams_(reloadUri);
- if (!isExcluded(steeringURI)) {
- return steeringURI;
- } // Return nothing if all valid manifest URIs are excluded.
-
- return null;
- }
- /**
- * Start the timeout for re-requesting the steering manifest at the TTL interval.
- *
- * @param {number} ttl time in seconds of the timeout. Defaults to the
- * ttl interval in the steering manifest
- */
-
- startTTLTimeout_(ttl = this.steeringManifest.ttl) {
- // 300 (5 minutes) is the default value.
- const ttlMS = ttl * 1000;
- this.ttlTimeout_ = window.setTimeout(() => {
- this.requestSteeringManifest();
- }, ttlMS);
- }
- /**
- * Clear the TTL timeout if necessary.
- */
-
- clearTTLTimeout_() {
- window.clearTimeout(this.ttlTimeout_);
- this.ttlTimeout_ = null;
- }
- /**
- * aborts any current steering xhr and sets the current request object to null
- */
-
- abort() {
- if (this.request_) {
- this.request_.abort();
- }
- this.request_ = null;
- }
- /**
- * aborts steering requests clears the ttl timeout and resets all properties.
- */
-
- dispose() {
- this.off('content-steering');
- this.off('error');
- this.abort();
- this.clearTTLTimeout_();
- this.currentPathway = null;
- this.defaultPathway = null;
- this.queryBeforeStart = null;
- this.proxyServerUrl_ = null;
- this.manifestType_ = null;
- this.ttlTimeout_ = null;
- this.request_ = null;
- this.excludedSteeringManifestURLs = new Set();
- this.availablePathways_ = new Set();
- this.steeringManifest = new SteeringManifest();
- }
- /**
- * adds a pathway to the available pathways set
- *
- * @param {string} pathway the pathway string to add
- */
-
- addAvailablePathway(pathway) {
- if (pathway) {
- this.availablePathways_.add(pathway);
- }
- }
- /**
- * Clears all pathways from the available pathways set
- */
-
- clearAvailablePathways() {
- this.availablePathways_.clear();
- }
- /**
- * Removes a pathway from the available pathways set.
- */
-
- excludePathway(pathway) {
- return this.availablePathways_.delete(pathway);
- }
- /**
- * Checks the refreshed DASH manifest content steering tag for changes.
- *
- * @param {string} baseURL new steering tag on DASH manifest refresh
- * @param {Object} newTag the new tag to check for changes
- * @return a true or false whether the new tag has different values
- */
-
- didDASHTagChange(baseURL, newTag) {
- return !newTag && this.steeringManifest.reloadUri || newTag && (resolveUrl(baseURL, newTag.serverURL) !== this.steeringManifest.reloadUri || newTag.defaultServiceLocation !== this.defaultPathway || newTag.queryBeforeStart !== this.queryBeforeStart || newTag.proxyServerURL !== this.proxyServerUrl_);
- }
- getAvailablePathways() {
- return this.availablePathways_;
- }
- }
-
- /**
- * @file playlist-controller.js
- */
- const ABORT_EARLY_EXCLUSION_SECONDS = 10;
- let Vhs$1; // SegmentLoader stats that need to have each loader's
- // values summed to calculate the final value
-
- const loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];
- const sumLoaderStat = function (stat) {
- return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];
- };
- const shouldSwitchToMedia = function ({
- currentPlaylist,
- buffered,
- currentTime,
- nextPlaylist,
- bufferLowWaterLine,
- bufferHighWaterLine,
- duration,
- bufferBasedABR,
- log
- }) {
- // we have no other playlist to switch to
- if (!nextPlaylist) {
- videojs.log.warn('We received no playlist to switch to. Please check your stream.');
- return false;
- }
- const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;
- if (!currentPlaylist) {
- log(`${sharedLogLine} as current playlist is not set`);
- return true;
- } // no need to switch if playlist is the same
-
- if (nextPlaylist.id === currentPlaylist.id) {
- return false;
- } // determine if current time is in a buffered range.
-
- const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.
- // This is because in LIVE, the player plays 3 segments from the end of the
- // playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble
- // in those segments, a viewer will never experience a rendition upswitch.
-
- if (!currentPlaylist.endList) {
- // For LLHLS live streams, don't switch renditions before playback has started, as it almost
- // doubles the time to first playback.
- if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {
- log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);
- return false;
- }
- log(`${sharedLogLine} as current playlist is live`);
- return true;
- }
- const forwardBuffer = timeAheadOf(buffered, currentTime);
- const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD
- // duration is below the max potential low water line
-
- if (duration < maxBufferLowWaterLine) {
- log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);
- return true;
- }
- const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;
- const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,
- // we can switch down
-
- if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {
- let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;
- if (bufferBasedABR) {
- logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;
- }
- log(logLine);
- return true;
- } // and if our buffer is higher than the low water line,
- // we can switch up
-
- if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {
- let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;
- if (bufferBasedABR) {
- logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;
- }
- log(logLine);
- return true;
- }
- log(`not ${sharedLogLine} as no switching criteria met`);
- return false;
- };
- /**
- * the main playlist controller controller all interactons
- * between playlists and segmentloaders. At this time this mainly
- * involves a main playlist and a series of audio playlists
- * if they are available
- *
- * @class PlaylistController
- * @extends videojs.EventTarget
- */
-
- class PlaylistController extends videojs.EventTarget {
- constructor(options) {
- super();
- const {
- src,
- withCredentials,
- tech,
- bandwidth,
- externVhs,
- useCueTags,
- playlistExclusionDuration,
- enableLowInitialPlaylist,
- sourceType,
- cacheEncryptionKeys,
- bufferBasedABR,
- leastPixelDiffSelector,
- captionServices
- } = options;
- if (!src) {
- throw new Error('A non-empty playlist URL or JSON manifest string is required');
- }
- let {
- maxPlaylistRetries
- } = options;
- if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {
- maxPlaylistRetries = Infinity;
- }
- Vhs$1 = externVhs;
- this.bufferBasedABR = Boolean(bufferBasedABR);
- this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);
- this.withCredentials = withCredentials;
- this.tech_ = tech;
- this.vhs_ = tech.vhs;
- this.sourceType_ = sourceType;
- this.useCueTags_ = useCueTags;
- this.playlistExclusionDuration = playlistExclusionDuration;
- this.maxPlaylistRetries = maxPlaylistRetries;
- this.enableLowInitialPlaylist = enableLowInitialPlaylist;
- if (this.useCueTags_) {
- this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');
- this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';
- }
- this.requestOptions_ = {
- withCredentials,
- maxPlaylistRetries,
- timeout: null
- };
- this.on('error', this.pauseLoading);
- this.mediaTypes_ = createMediaTypes();
- this.mediaSource = new window.MediaSource();
- this.handleDurationChange_ = this.handleDurationChange_.bind(this);
- this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);
- this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);
- this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
-
- this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);
- this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of
- // everything, and the MediaSource should not be detached without a proper disposal
-
- this.seekable_ = createTimeRanges();
- this.hasPlayed_ = false;
- this.syncController_ = new SyncController(options);
- this.segmentMetadataTrack_ = tech.addRemoteTextTrack({
- kind: 'metadata',
- label: 'segment-metadata'
- }, false).track;
- this.decrypter_ = new Decrypter();
- this.sourceUpdater_ = new SourceUpdater(this.mediaSource);
- this.inbandTextTracks_ = {};
- this.timelineChangeController_ = new TimelineChangeController();
- this.keyStatusMap_ = new Map();
- const segmentLoaderSettings = {
- vhs: this.vhs_,
- parse708captions: options.parse708captions,
- useDtsForTimestampOffset: options.useDtsForTimestampOffset,
- captionServices,
- mediaSource: this.mediaSource,
- currentTime: this.tech_.currentTime.bind(this.tech_),
- seekable: () => this.seekable(),
- seeking: () => this.tech_.seeking(),
- duration: () => this.duration(),
- hasPlayed: () => this.hasPlayed_,
- goalBufferLength: () => this.goalBufferLength(),
- bandwidth,
- syncController: this.syncController_,
- decrypter: this.decrypter_,
- sourceType: this.sourceType_,
- inbandTextTracks: this.inbandTextTracks_,
- cacheEncryptionKeys,
- sourceUpdater: this.sourceUpdater_,
- timelineChangeController: this.timelineChangeController_,
- exactManifestTimings: options.exactManifestTimings,
- addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
- }; // The source type check not only determines whether a special DASH playlist loader
- // should be used, but also covers the case where the provided src is a vhs-json
- // manifest object (instead of a URL). In the case of vhs-json, the default
- // PlaylistLoader should be used.
-
- this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
- addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
- })) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
- addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)
- }));
- this.setupMainPlaylistLoaderListeners_(); // setup segment loaders
- // combined audio/video or just video when alternate audio track is selected
-
- this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
- segmentMetadataTrack: this.segmentMetadataTrack_,
- loaderType: 'main'
- }), options); // alternate audio track
-
- this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
- loaderType: 'audio'
- }), options);
- this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {
- loaderType: 'vtt',
- featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,
- loadVttJs: () => new Promise((resolve, reject) => {
- function onLoad() {
- tech.off('vttjserror', onError);
- resolve();
- }
- function onError() {
- tech.off('vttjsloaded', onLoad);
- reject();
- }
- tech.one('vttjsloaded', onLoad);
- tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:
-
- tech.addWebVttScript_();
- })
- }), options);
- const getBandwidth = () => {
- return this.mainSegmentLoader_.bandwidth;
- };
- this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);
- this.setupSegmentLoaderListeners_();
- if (this.bufferBasedABR) {
- this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());
- this.tech_.on('pause', () => this.stopABRTimer_());
- this.tech_.on('play', () => this.startABRTimer_());
- } // Create SegmentLoader stat-getters
- // mediaRequests_
- // mediaRequestsAborted_
- // mediaRequestsTimedout_
- // mediaRequestsErrored_
- // mediaTransferDuration_
- // mediaBytesTransferred_
- // mediaAppends_
-
- loaderStats.forEach(stat => {
- this[stat + '_'] = sumLoaderStat.bind(this, stat);
- });
- this.logger_ = logger('pc');
- this.triggeredFmp4Usage = false;
- if (this.tech_.preload() === 'none') {
- this.loadOnPlay_ = () => {
- this.loadOnPlay_ = null;
- this.mainPlaylistLoader_.load();
- };
- this.tech_.one('play', this.loadOnPlay_);
- } else {
- this.mainPlaylistLoader_.load();
- }
- this.timeToLoadedData__ = -1;
- this.mainAppendsToLoadedData__ = -1;
- this.audioAppendsToLoadedData__ = -1;
- const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)
-
- this.tech_.one(event, () => {
- const timeToLoadedDataStart = Date.now();
- this.tech_.one('loadeddata', () => {
- this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;
- this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;
- this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;
- });
- });
- }
- mainAppendsToLoadedData_() {
- return this.mainAppendsToLoadedData__;
- }
- audioAppendsToLoadedData_() {
- return this.audioAppendsToLoadedData__;
- }
- appendsToLoadedData_() {
- const main = this.mainAppendsToLoadedData_();
- const audio = this.audioAppendsToLoadedData_();
- if (main === -1 || audio === -1) {
- return -1;
- }
- return main + audio;
- }
- timeToLoadedData_() {
- return this.timeToLoadedData__;
- }
- /**
- * Run selectPlaylist and switch to the new playlist if we should
- *
- * @param {string} [reason=abr] a reason for why the ABR check is made
- * @private
- */
-
- checkABR_(reason = 'abr') {
- const nextPlaylist = this.selectPlaylist();
- if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {
- this.switchMedia_(nextPlaylist, reason);
- }
- }
- switchMedia_(playlist, cause, delay) {
- const oldMedia = this.media();
- const oldId = oldMedia && (oldMedia.id || oldMedia.uri);
- const newId = playlist && (playlist.id || playlist.uri);
- if (oldId && oldId !== newId) {
- this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);
- this.tech_.trigger({
- type: 'usage',
- name: `vhs-rendition-change-${cause}`
- });
- }
- this.mainPlaylistLoader_.media(playlist, delay);
- }
- /**
- * A function that ensures we switch our playlists inside of `mediaTypes`
- * to match the current `serviceLocation` provided by the contentSteering controller.
- * We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.
- *
- * This should only be called on a DASH playback scenario while using content steering.
- * This is necessary due to differences in how media in HLS manifests are generally tied to
- * a video playlist, where in DASH that is not always the case.
- */
-
- switchMediaForDASHContentSteering_() {
- ['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
- const mediaType = this.mediaTypes_[type];
- const activeGroup = mediaType ? mediaType.activeGroup() : null;
- const pathway = this.contentSteeringController_.getPathway();
- if (activeGroup && pathway) {
- // activeGroup can be an array or a single group
- const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;
- const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN
-
- if (dashMediaPlaylists.length) {
- this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);
- }
- }
- });
- }
- /**
- * Start a timer that periodically calls checkABR_
- *
- * @private
- */
-
- startABRTimer_() {
- this.stopABRTimer_();
- this.abrTimer_ = window.setInterval(() => this.checkABR_(), 250);
- }
- /**
- * Stop the timer that periodically calls checkABR_
- *
- * @private
- */
-
- stopABRTimer_() {
- // if we're scrubbing, we don't need to pause.
- // This getter will be added to Video.js in version 7.11.
- if (this.tech_.scrubbing && this.tech_.scrubbing()) {
- return;
- }
- window.clearInterval(this.abrTimer_);
- this.abrTimer_ = null;
- }
- /**
- * Get a list of playlists for the currently selected audio playlist
- *
- * @return {Array} the array of audio playlists
- */
-
- getAudioTrackPlaylists_() {
- const main = this.main();
- const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only
- // assume that the audio tracks are contained in main
- // playlist array, use that or an empty array.
-
- if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {
- return defaultPlaylists;
- }
- const AUDIO = main.mediaGroups.AUDIO;
- const groupKeys = Object.keys(AUDIO);
- let track; // get the current active track
-
- if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {
- track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet
- } else {
- // default group is `main` or just the first group.
- const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];
- for (const label in defaultGroup) {
- if (defaultGroup[label].default) {
- track = {
- label
- };
- break;
- }
- }
- } // no active track no playlists.
-
- if (!track) {
- return defaultPlaylists;
- }
- const playlists = []; // get all of the playlists that are possible for the
- // active track.
-
- for (const group in AUDIO) {
- if (AUDIO[group][track.label]) {
- const properties = AUDIO[group][track.label];
- if (properties.playlists && properties.playlists.length) {
- playlists.push.apply(playlists, properties.playlists);
- } else if (properties.uri) {
- playlists.push(properties);
- } else if (main.playlists.length) {
- // if an audio group does not have a uri
- // see if we have main playlists that use it as a group.
- // if we do then add those to the playlists list.
- for (let i = 0; i < main.playlists.length; i++) {
- const playlist = main.playlists[i];
- if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {
- playlists.push(playlist);
- }
- }
- }
- }
- }
- if (!playlists.length) {
- return defaultPlaylists;
- }
- return playlists;
- }
- /**
- * Register event handlers on the main playlist loader. A helper
- * function for construction time.
- *
- * @private
- */
-
- setupMainPlaylistLoaderListeners_() {
- this.mainPlaylistLoader_.on('loadedmetadata', () => {
- const media = this.mainPlaylistLoader_.media();
- const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
- // timeout the request.
-
- if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
- this.requestOptions_.timeout = 0;
- } else {
- this.requestOptions_.timeout = requestTimeout;
- } // if this isn't a live video and preload permits, start
- // downloading segments
-
- if (media.endList && this.tech_.preload() !== 'none') {
- this.mainSegmentLoader_.playlist(media, this.requestOptions_);
- this.mainSegmentLoader_.load();
- }
- setupMediaGroups({
- sourceType: this.sourceType_,
- segmentLoaders: {
- AUDIO: this.audioSegmentLoader_,
- SUBTITLES: this.subtitleSegmentLoader_,
- main: this.mainSegmentLoader_
- },
- tech: this.tech_,
- requestOptions: this.requestOptions_,
- mainPlaylistLoader: this.mainPlaylistLoader_,
- vhs: this.vhs_,
- main: this.main(),
- mediaTypes: this.mediaTypes_,
- excludePlaylist: this.excludePlaylist.bind(this)
- });
- this.triggerPresenceUsage_(this.main(), media);
- this.setupFirstPlay();
- if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {
- this.trigger('selectedinitialmedia');
- } else {
- // We must wait for the active audio playlist loader to
- // finish setting up before triggering this event so the
- // representations API and EME setup is correct
- this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {
- this.trigger('selectedinitialmedia');
- });
- }
- });
- this.mainPlaylistLoader_.on('loadedplaylist', () => {
- if (this.loadOnPlay_) {
- this.tech_.off('play', this.loadOnPlay_);
- }
- let updatedPlaylist = this.mainPlaylistLoader_.media();
- if (!updatedPlaylist) {
- // Add content steering listeners on first load and init.
- this.attachContentSteeringListeners_();
- this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting
- // an initial media as the playlist selectors do not consider browser support
-
- this.excludeUnsupportedVariants_();
- let selectedMedia;
- if (this.enableLowInitialPlaylist) {
- selectedMedia = this.selectInitialPlaylist();
- }
- if (!selectedMedia) {
- selectedMedia = this.selectPlaylist();
- }
- if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {
- return;
- }
- this.initialMedia_ = selectedMedia;
- this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will
- // fire again since the playlist will be requested. In the case of vhs-json
- // (where the manifest object is provided as the source), when the media
- // playlist's `segments` list is already available, a media playlist won't be
- // requested, and loadedplaylist won't fire again, so the playlist handler must be
- // called on its own here.
-
- const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;
- if (!haveJsonSource) {
- return;
- }
- updatedPlaylist = this.initialMedia_;
- }
- this.handleUpdatedMediaPlaylist(updatedPlaylist);
- });
- this.mainPlaylistLoader_.on('error', () => {
- const error = this.mainPlaylistLoader_.error;
- this.excludePlaylist({
- playlistToExclude: error.playlist,
- error
- });
- });
- this.mainPlaylistLoader_.on('mediachanging', () => {
- this.mainSegmentLoader_.abort();
- this.mainSegmentLoader_.pause();
- });
- this.mainPlaylistLoader_.on('mediachange', () => {
- const media = this.mainPlaylistLoader_.media();
- const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
- // timeout the request.
-
- if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
- this.requestOptions_.timeout = 0;
- } else {
- this.requestOptions_.timeout = requestTimeout;
- }
- if (this.sourceType_ === 'dash') {
- // we don't want to re-request the same hls playlist right after it was changed
- this.mainPlaylistLoader_.load();
- } // TODO: Create a new event on the PlaylistLoader that signals
- // that the segments have changed in some way and use that to
- // update the SegmentLoader instead of doing it twice here and
- // on `loadedplaylist`
-
- this.mainSegmentLoader_.pause();
- this.mainSegmentLoader_.playlist(media, this.requestOptions_);
- if (this.waitingForFastQualityPlaylistReceived_) {
- this.runFastQualitySwitch_();
- } else {
- this.mainSegmentLoader_.load();
- }
- this.tech_.trigger({
- type: 'mediachange',
- bubbles: true
- });
- });
- this.mainPlaylistLoader_.on('playlistunchanged', () => {
- const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been
- // excluded for not-changing. We likely just have a really slowly updating
- // playlist.
-
- if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {
- return;
- }
- const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);
- if (playlistOutdated) {
- // Playlist has stopped updating and we're stuck at its end. Try to
- // exclude it and switch to another playlist in the hope that that
- // one is updating (and give the player a chance to re-adjust to the
- // safe live point).
- this.excludePlaylist({
- error: {
- message: 'Playlist no longer updating.',
- reason: 'playlist-unchanged'
- }
- }); // useful for monitoring QoS
-
- this.tech_.trigger('playliststuck');
- }
- });
- this.mainPlaylistLoader_.on('renditiondisabled', () => {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-rendition-disabled'
- });
- });
- this.mainPlaylistLoader_.on('renditionenabled', () => {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-rendition-enabled'
- });
- });
- }
- /**
- * Given an updated media playlist (whether it was loaded for the first time, or
- * refreshed for live playlists), update any relevant properties and state to reflect
- * changes in the media that should be accounted for (e.g., cues and duration).
- *
- * @param {Object} updatedPlaylist the updated media playlist object
- *
- * @private
- */
-
- handleUpdatedMediaPlaylist(updatedPlaylist) {
- if (this.useCueTags_) {
- this.updateAdCues_(updatedPlaylist);
- } // TODO: Create a new event on the PlaylistLoader that signals
- // that the segments have changed in some way and use that to
- // update the SegmentLoader instead of doing it twice here and
- // on `mediachange`
-
- this.mainSegmentLoader_.pause();
- this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);
- if (this.waitingForFastQualityPlaylistReceived_) {
- this.runFastQualitySwitch_();
- }
- this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,
- // as it is possible that it was temporarily stopped while waiting for
- // a playlist (e.g., in case the playlist errored and we re-requested it).
-
- if (!this.tech_.paused()) {
- this.mainSegmentLoader_.load();
- if (this.audioSegmentLoader_) {
- this.audioSegmentLoader_.load();
- }
- }
- }
- /**
- * A helper function for triggerring presence usage events once per source
- *
- * @private
- */
-
- triggerPresenceUsage_(main, media) {
- const mediaGroups = main.mediaGroups || {};
- let defaultDemuxed = true;
- const audioGroupKeys = Object.keys(mediaGroups.AUDIO);
- for (const mediaGroup in mediaGroups.AUDIO) {
- for (const label in mediaGroups.AUDIO[mediaGroup]) {
- const properties = mediaGroups.AUDIO[mediaGroup][label];
- if (!properties.uri) {
- defaultDemuxed = false;
- }
- }
- }
- if (defaultDemuxed) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-demuxed'
- });
- }
- if (Object.keys(mediaGroups.SUBTITLES).length) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-webvtt'
- });
- }
- if (Vhs$1.Playlist.isAes(media)) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-aes'
- });
- }
- if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-alternate-audio'
- });
- }
- if (this.useCueTags_) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-playlist-cue-tags'
- });
- }
- }
- shouldSwitchToMedia_(nextPlaylist) {
- const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;
- const currentTime = this.tech_.currentTime();
- const bufferLowWaterLine = this.bufferLowWaterLine();
- const bufferHighWaterLine = this.bufferHighWaterLine();
- const buffered = this.tech_.buffered();
- return shouldSwitchToMedia({
- buffered,
- currentTime,
- currentPlaylist,
- nextPlaylist,
- bufferLowWaterLine,
- bufferHighWaterLine,
- duration: this.duration(),
- bufferBasedABR: this.bufferBasedABR,
- log: this.logger_
- });
- }
- /**
- * Register event handlers on the segment loaders. A helper function
- * for construction time.
- *
- * @private
- */
-
- setupSegmentLoaderListeners_() {
- this.mainSegmentLoader_.on('bandwidthupdate', () => {
- // Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's
- // useful to check to see if a rendition switch should be made.
- this.checkABR_('bandwidthupdate');
- this.tech_.trigger('bandwidthupdate');
- });
- this.mainSegmentLoader_.on('timeout', () => {
- if (this.bufferBasedABR) {
- // If a rendition change is needed, then it would've be done on `bandwidthupdate`.
- // Here the only consideration is that for buffer based ABR there's no guarantee
- // of an immediate switch (since the bandwidth is averaged with a timeout
- // bandwidth value of 1), so force a load on the segment loader to keep it going.
- this.mainSegmentLoader_.load();
- }
- }); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer
- // based ABR.
-
- if (!this.bufferBasedABR) {
- this.mainSegmentLoader_.on('progress', () => {
- this.trigger('progress');
- });
- }
- this.mainSegmentLoader_.on('error', () => {
- const error = this.mainSegmentLoader_.error();
- this.excludePlaylist({
- playlistToExclude: error.playlist,
- error
- });
- });
- this.mainSegmentLoader_.on('appenderror', () => {
- this.error = this.mainSegmentLoader_.error_;
- this.trigger('error');
- });
- this.mainSegmentLoader_.on('syncinfoupdate', () => {
- this.onSyncInfoUpdate_();
- });
- this.mainSegmentLoader_.on('timestampoffset', () => {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-timestamp-offset'
- });
- });
- this.audioSegmentLoader_.on('syncinfoupdate', () => {
- this.onSyncInfoUpdate_();
- });
- this.audioSegmentLoader_.on('appenderror', () => {
- this.error = this.audioSegmentLoader_.error_;
- this.trigger('error');
- });
- this.mainSegmentLoader_.on('ended', () => {
- this.logger_('main segment loader ended');
- this.onEndOfStream();
- });
- this.mainSegmentLoader_.on('earlyabort', event => {
- // never try to early abort with the new ABR algorithm
- if (this.bufferBasedABR) {
- return;
- }
- this.delegateLoaders_('all', ['abort']);
- this.excludePlaylist({
- error: {
- message: 'Aborted early because there isn\'t enough bandwidth to complete ' + 'the request without rebuffering.'
- },
- playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS
- });
- });
- const updateCodecs = () => {
- if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {
- return this.tryToCreateSourceBuffers_();
- }
- const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
-
- if (!codecs) {
- return;
- }
- this.sourceUpdater_.addOrChangeSourceBuffers(codecs);
- };
- this.mainSegmentLoader_.on('trackinfo', updateCodecs);
- this.audioSegmentLoader_.on('trackinfo', updateCodecs);
- this.mainSegmentLoader_.on('fmp4', () => {
- if (!this.triggeredFmp4Usage) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-fmp4'
- });
- this.triggeredFmp4Usage = true;
- }
- });
- this.audioSegmentLoader_.on('fmp4', () => {
- if (!this.triggeredFmp4Usage) {
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-fmp4'
- });
- this.triggeredFmp4Usage = true;
- }
- });
- this.audioSegmentLoader_.on('ended', () => {
- this.logger_('audioSegmentLoader ended');
- this.onEndOfStream();
- });
- }
- mediaSecondsLoaded_() {
- return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);
- }
- /**
- * Call load on our SegmentLoaders
- */
-
- load() {
- this.mainSegmentLoader_.load();
- if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
- this.audioSegmentLoader_.load();
- }
- if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
- this.subtitleSegmentLoader_.load();
- }
- }
- /**
- * Re-tune playback quality level for the current player
- * conditions. This method will perform destructive actions like removing
- * already buffered content in order to readjust the currently active
- * playlist quickly. This is good for manual quality changes
- *
- * @private
- */
-
- fastQualityChange_(media = this.selectPlaylist()) {
- if (media && media === this.mainPlaylistLoader_.media()) {
- this.logger_('skipping fastQualityChange because new media is same as old');
- return;
- }
- this.switchMedia_(media, 'fast-quality'); // we would like to avoid race condition when we call fastQuality,
- // reset everything and start loading segments from prev segments instead of new because new playlist is not received yet
-
- this.waitingForFastQualityPlaylistReceived_ = true;
- }
- runFastQualitySwitch_() {
- this.waitingForFastQualityPlaylistReceived_ = false; // Delete all buffered data to allow an immediate quality switch, then seek to give
- // the browser a kick to remove any cached frames from the previous rendtion (.04 seconds
- // ahead was roughly the minimum that will accomplish this across a variety of content
- // in IE and Edge, but seeking in place is sufficient on all other browsers)
- // Edge/IE bug: https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/14600375/
- // Chrome bug: https://bugs.chromium.org/p/chromium/issues/detail?id=651904
-
- this.mainSegmentLoader_.pause();
- this.mainSegmentLoader_.resetEverything(() => {
- this.tech_.setCurrentTime(this.tech_.currentTime());
- }); // don't need to reset audio as it is reset when media changes
- }
- /**
- * Begin playback.
- */
-
- play() {
- if (this.setupFirstPlay()) {
- return;
- }
- if (this.tech_.ended()) {
- this.tech_.setCurrentTime(0);
- }
- if (this.hasPlayed_) {
- this.load();
- }
- const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,
- // seek forward to the live point
-
- if (this.tech_.duration() === Infinity) {
- if (this.tech_.currentTime() < seekable.start(0)) {
- return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));
- }
- }
- }
- /**
- * Seek to the latest media position if this is a live video and the
- * player and video are loaded and initialized.
- */
-
- setupFirstPlay() {
- const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play
- // If 1) there is no active media
- // 2) the player is paused
- // 3) the first play has already been setup
- // then exit early
-
- if (!media || this.tech_.paused() || this.hasPlayed_) {
- return false;
- } // when the video is a live stream and/or has a start time
-
- if (!media.endList || media.start) {
- const seekable = this.seekable();
- if (!seekable.length) {
- // without a seekable range, the player cannot seek to begin buffering at the
- // live or start point
- return false;
- }
- const seekableEnd = seekable.end(0);
- let startPoint = seekableEnd;
- if (media.start) {
- const offset = media.start.timeOffset;
- if (offset < 0) {
- startPoint = Math.max(seekableEnd + offset, seekable.start(0));
- } else {
- startPoint = Math.min(seekableEnd, offset);
- }
- } // trigger firstplay to inform the source handler to ignore the next seek event
-
- this.trigger('firstplay'); // seek to the live point
-
- this.tech_.setCurrentTime(startPoint);
- }
- this.hasPlayed_ = true; // we can begin loading now that everything is ready
-
- this.load();
- return true;
- }
- /**
- * handle the sourceopen event on the MediaSource
- *
- * @private
- */
-
- handleSourceOpen_() {
- // Only attempt to create the source buffer if none already exist.
- // handleSourceOpen is also called when we are "re-opening" a source buffer
- // after `endOfStream` has been called (in response to a seek for instance)
- this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of
- // code in video.js but is required because play() must be invoked
- // *after* the media source has opened.
-
- if (this.tech_.autoplay()) {
- const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request
- // on browsers which return a promise
-
- if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {
- playPromise.then(null, e => {});
- }
- }
- this.trigger('sourceopen');
- }
- /**
- * handle the sourceended event on the MediaSource
- *
- * @private
- */
-
- handleSourceEnded_() {
- if (!this.inbandTextTracks_.metadataTrack_) {
- return;
- }
- const cues = this.inbandTextTracks_.metadataTrack_.cues;
- if (!cues || !cues.length) {
- return;
- }
- const duration = this.duration();
- cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;
- }
- /**
- * handle the durationchange event on the MediaSource
- *
- * @private
- */
-
- handleDurationChange_() {
- this.tech_.trigger('durationchange');
- }
- /**
- * Calls endOfStream on the media source when all active stream types have called
- * endOfStream
- *
- * @param {string} streamType
- * Stream type of the segment loader that called endOfStream
- * @private
- */
-
- onEndOfStream() {
- let isEndOfStream = this.mainSegmentLoader_.ended_;
- if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
- const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active
-
- if (!mainMediaInfo || mainMediaInfo.hasVideo) {
- // if we do not know if the main segment loader contains video yet or if we
- // definitively know the main segment loader contains video, then we need to wait
- // for both main and audio segment loaders to call endOfStream
- isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;
- } else {
- // otherwise just rely on the audio loader
- isEndOfStream = this.audioSegmentLoader_.ended_;
- }
- }
- if (!isEndOfStream) {
- return;
- }
- this.stopABRTimer_();
- this.sourceUpdater_.endOfStream();
- }
- /**
- * Check if a playlist has stopped being updated
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist has stopped being updated or not
- */
-
- stuckAtPlaylistEnd_(playlist) {
- const seekable = this.seekable();
- if (!seekable.length) {
- // playlist doesn't have enough information to determine whether we are stuck
- return false;
- }
- const expired = this.syncController_.getExpiredTime(playlist, this.duration());
- if (expired === null) {
- return false;
- } // does not use the safe live end to calculate playlist end, since we
- // don't want to say we are stuck while there is still content
-
- const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);
- const currentTime = this.tech_.currentTime();
- const buffered = this.tech_.buffered();
- if (!buffered.length) {
- // return true if the playhead reached the absolute end of the playlist
- return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;
- }
- const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute
- // end of playlist
-
- return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;
- }
- /**
- * Exclude a playlist for a set amount of time, making it unavailable for selection by
- * the rendition selection algorithm, then force a new playlist (rendition) selection.
- *
- * @param {Object=} playlistToExclude
- * the playlist to exclude, defaults to the currently selected playlist
- * @param {Object=} error
- * an optional error
- * @param {number=} playlistExclusionDuration
- * an optional number of seconds to exclude the playlist
- */
-
- excludePlaylist({
- playlistToExclude = this.mainPlaylistLoader_.media(),
- error = {},
- playlistExclusionDuration
- }) {
- // If the `error` was generated by the playlist loader, it will contain
- // the playlist we were trying to load (but failed) and that should be
- // excluded instead of the currently selected playlist which is likely
- // out-of-date in this scenario
- playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();
- playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were
- // trying to load the main OR while we were disposing of the tech
-
- if (!playlistToExclude) {
- this.error = error;
- if (this.mediaSource.readyState !== 'open') {
- this.trigger('error');
- } else {
- this.sourceUpdater_.endOfStream('network');
- }
- return;
- }
- playlistToExclude.playlistErrors_++;
- const playlists = this.mainPlaylistLoader_.main.playlists;
- const enabledPlaylists = playlists.filter(isEnabled);
- const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded
- // forever
-
- if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {
- videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');
- this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay
-
- return this.mainPlaylistLoader_.load(isFinalRendition);
- }
- if (isFinalRendition) {
- // If we're content steering, try other pathways.
- if (this.main().contentSteering) {
- const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.
-
- const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;
- this.contentSteeringController_.excludePathway(pathway);
- this.excludeThenChangePathway_();
- setTimeout(() => {
- this.contentSteeringController_.addAvailablePathway(pathway);
- }, reIncludeDelay);
- return;
- } // Since we're on the final non-excluded playlist, and we're about to exclude
- // it, instead of erring the player or retrying this playlist, clear out the current
- // exclusion list. This allows other playlists to be attempted in case any have been
- // fixed.
-
- let reincluded = false;
- playlists.forEach(playlist => {
- // skip current playlist which is about to be excluded
- if (playlist === playlistToExclude) {
- return;
- }
- const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.
-
- if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {
- reincluded = true;
- delete playlist.excludeUntil;
- }
- });
- if (reincluded) {
- videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous
- // playlist. This is needed for users relying on the retryplaylist event to catch a
- // case where the player might be stuck and looping through "dead" playlists.
-
- this.tech_.trigger('retryplaylist');
- }
- } // Exclude this playlist
-
- let excludeUntil;
- if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {
- excludeUntil = Infinity;
- } else {
- excludeUntil = Date.now() + playlistExclusionDuration * 1000;
- }
- playlistToExclude.excludeUntil = excludeUntil;
- if (error.reason) {
- playlistToExclude.lastExcludeReason_ = error.reason;
- }
- this.tech_.trigger('excludeplaylist');
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-rendition-excluded'
- }); // TODO: only load a new playlist if we're excluding the current playlist
- // If this function was called with a playlist that's not the current active playlist
- // (e.g., media().id !== playlistToExclude.id),
- // then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.
-
- const nextPlaylist = this.selectPlaylist();
- if (!nextPlaylist) {
- this.error = 'Playback cannot continue. No available working or supported playlists.';
- this.trigger('error');
- return;
- }
- const logFn = error.internal ? this.logger_ : videojs.log.warn;
- const errorMessage = error.message ? ' ' + error.message : '';
- logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders
-
- if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {
- this.delegateLoaders_('audio', ['abort', 'pause']);
- } // if subtitle group changed reset subtitle loaders
-
- if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {
- this.delegateLoaders_('subtitle', ['abort', 'pause']);
- }
- this.delegateLoaders_('main', ['abort', 'pause']);
- const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;
- const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration
-
- return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);
- }
- /**
- * Pause all segment/playlist loaders
- */
-
- pauseLoading() {
- this.delegateLoaders_('all', ['abort', 'pause']);
- this.stopABRTimer_();
- }
- /**
- * Call a set of functions in order on playlist loaders, segment loaders,
- * or both types of loaders.
- *
- * @param {string} filter
- * Filter loaders that should call fnNames using a string. Can be:
- * * all - run on all loaders
- * * audio - run on all audio loaders
- * * subtitle - run on all subtitle loaders
- * * main - run on the main loaders
- *
- * @param {Array|string} fnNames
- * A string or array of function names to call.
- */
-
- delegateLoaders_(filter, fnNames) {
- const loaders = [];
- const dontFilterPlaylist = filter === 'all';
- if (dontFilterPlaylist || filter === 'main') {
- loaders.push(this.mainPlaylistLoader_);
- }
- const mediaTypes = [];
- if (dontFilterPlaylist || filter === 'audio') {
- mediaTypes.push('AUDIO');
- }
- if (dontFilterPlaylist || filter === 'subtitle') {
- mediaTypes.push('CLOSED-CAPTIONS');
- mediaTypes.push('SUBTITLES');
- }
- mediaTypes.forEach(mediaType => {
- const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;
- if (loader) {
- loaders.push(loader);
- }
- });
- ['main', 'audio', 'subtitle'].forEach(name => {
- const loader = this[`${name}SegmentLoader_`];
- if (loader && (filter === name || filter === 'all')) {
- loaders.push(loader);
- }
- });
- loaders.forEach(loader => fnNames.forEach(fnName => {
- if (typeof loader[fnName] === 'function') {
- loader[fnName]();
- }
- }));
- }
- /**
- * set the current time on all segment loaders
- *
- * @param {TimeRange} currentTime the current time to set
- * @return {TimeRange} the current time
- */
-
- setCurrentTime(currentTime) {
- const buffered = findRange(this.tech_.buffered(), currentTime);
- if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {
- // return immediately if the metadata is not ready yet
- return 0;
- } // it's clearly an edge-case but don't thrown an error if asked to
- // seek within an empty playlist
-
- if (!this.mainPlaylistLoader_.media().segments) {
- return 0;
- } // if the seek location is already buffered, continue buffering as usual
-
- if (buffered && buffered.length) {
- return currentTime;
- } // cancel outstanding requests so we begin buffering at the new
- // location
-
- this.mainSegmentLoader_.pause();
- this.mainSegmentLoader_.resetEverything();
- if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
- this.audioSegmentLoader_.pause();
- this.audioSegmentLoader_.resetEverything();
- }
- if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
- this.subtitleSegmentLoader_.pause();
- this.subtitleSegmentLoader_.resetEverything();
- } // start segment loader loading in case they are paused
-
- this.load();
- }
- /**
- * get the current duration
- *
- * @return {TimeRange} the duration
- */
-
- duration() {
- if (!this.mainPlaylistLoader_) {
- return 0;
- }
- const media = this.mainPlaylistLoader_.media();
- if (!media) {
- // no playlists loaded yet, so can't determine a duration
- return 0;
- } // Don't rely on the media source for duration in the case of a live playlist since
- // setting the native MediaSource's duration to infinity ends up with consequences to
- // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
- //
- // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
- // however, few browsers have support for setLiveSeekableRange()
- // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
- //
- // Until a time when the duration of the media source can be set to infinity, and a
- // seekable range specified across browsers, just return Infinity.
-
- if (!media.endList) {
- return Infinity;
- } // Since this is a VOD video, it is safe to rely on the media source's duration (if
- // available). If it's not available, fall back to a playlist-calculated estimate.
-
- if (this.mediaSource) {
- return this.mediaSource.duration;
- }
- return Vhs$1.Playlist.duration(media);
- }
- /**
- * check the seekable range
- *
- * @return {TimeRange} the seekable range
- */
-
- seekable() {
- return this.seekable_;
- }
- onSyncInfoUpdate_() {
- let audioSeekable; // TODO check for creation of both source buffers before updating seekable
- //
- // A fix was made to this function where a check for
- // this.sourceUpdater_.hasCreatedSourceBuffers
- // was added to ensure that both source buffers were created before seekable was
- // updated. However, it originally had a bug where it was checking for a true and
- // returning early instead of checking for false. Setting it to check for false to
- // return early though created other issues. A call to play() would check for seekable
- // end without verifying that a seekable range was present. In addition, even checking
- // for that didn't solve some issues, as handleFirstPlay is sometimes worked around
- // due to a media update calling load on the segment loaders, skipping a seek to live,
- // thereby starting live streams at the beginning of the stream rather than at the end.
- //
- // This conditional should be fixed to wait for the creation of two source buffers at
- // the same time as the other sections of code are fixed to properly seek to live and
- // not throw an error due to checking for a seekable end when no seekable range exists.
- //
- // For now, fall back to the older behavior, with the understanding that the seekable
- // range may not be completely correct, leading to a suboptimal initial live point.
-
- if (!this.mainPlaylistLoader_) {
- return;
- }
- let media = this.mainPlaylistLoader_.media();
- if (!media) {
- return;
- }
- let expired = this.syncController_.getExpiredTime(media, this.duration());
- if (expired === null) {
- // not enough information to update seekable
- return;
- }
- const main = this.mainPlaylistLoader_.main;
- const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
- if (mainSeekable.length === 0) {
- return;
- }
- if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
- media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();
- expired = this.syncController_.getExpiredTime(media, this.duration());
- if (expired === null) {
- return;
- }
- audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
- if (audioSeekable.length === 0) {
- return;
- }
- }
- let oldEnd;
- let oldStart;
- if (this.seekable_ && this.seekable_.length) {
- oldEnd = this.seekable_.end(0);
- oldStart = this.seekable_.start(0);
- }
- if (!audioSeekable) {
- // seekable has been calculated based on buffering video data so it
- // can be returned directly
- this.seekable_ = mainSeekable;
- } else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {
- // seekables are pretty far off, rely on main
- this.seekable_ = mainSeekable;
- } else {
- this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);
- } // seekable is the same as last time
-
- if (this.seekable_ && this.seekable_.length) {
- if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {
- return;
- }
- }
- this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);
- this.tech_.trigger('seekablechanged');
- }
- /**
- * Update the player duration
- */
-
- updateDuration(isLive) {
- if (this.updateDuration_) {
- this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
- this.updateDuration_ = null;
- }
- if (this.mediaSource.readyState !== 'open') {
- this.updateDuration_ = this.updateDuration.bind(this, isLive);
- this.mediaSource.addEventListener('sourceopen', this.updateDuration_);
- return;
- }
- if (isLive) {
- const seekable = this.seekable();
- if (!seekable.length) {
- return;
- } // Even in the case of a live playlist, the native MediaSource's duration should not
- // be set to Infinity (even though this would be expected for a live playlist), since
- // setting the native MediaSource's duration to infinity ends up with consequences to
- // seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
- //
- // This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
- // however, few browsers have support for setLiveSeekableRange()
- // https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
- //
- // Until a time when the duration of the media source can be set to infinity, and a
- // seekable range specified across browsers, the duration should be greater than or
- // equal to the last possible seekable value.
- // MediaSource duration starts as NaN
- // It is possible (and probable) that this case will never be reached for many
- // sources, since the MediaSource reports duration as the highest value without
- // accounting for timestamp offset. For example, if the timestamp offset is -100 and
- // we buffered times 0 to 100 with real times of 100 to 200, even though current
- // time will be between 0 and 100, the native media source may report the duration
- // as 200. However, since we report duration separate from the media source (as
- // Infinity), and as long as the native media source duration value is greater than
- // our reported seekable range, seeks will work as expected. The large number as
- // duration for live is actually a strategy used by some players to work around the
- // issue of live seekable ranges cited above.
-
- if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {
- this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));
- }
- return;
- }
- const buffered = this.tech_.buffered();
- let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());
- if (buffered.length > 0) {
- duration = Math.max(duration, buffered.end(buffered.length - 1));
- }
- if (this.mediaSource.duration !== duration) {
- this.sourceUpdater_.setDuration(duration);
- }
- }
- /**
- * dispose of the PlaylistController and everything
- * that it controls
- */
-
- dispose() {
- this.trigger('dispose');
- this.decrypter_.terminate();
- this.mainPlaylistLoader_.dispose();
- this.mainSegmentLoader_.dispose();
- this.contentSteeringController_.dispose();
- this.keyStatusMap_.clear();
- if (this.loadOnPlay_) {
- this.tech_.off('play', this.loadOnPlay_);
- }
- ['AUDIO', 'SUBTITLES'].forEach(type => {
- const groups = this.mediaTypes_[type].groups;
- for (const id in groups) {
- groups[id].forEach(group => {
- if (group.playlistLoader) {
- group.playlistLoader.dispose();
- }
- });
- }
- });
- this.audioSegmentLoader_.dispose();
- this.subtitleSegmentLoader_.dispose();
- this.sourceUpdater_.dispose();
- this.timelineChangeController_.dispose();
- this.stopABRTimer_();
- if (this.updateDuration_) {
- this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
- }
- this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
-
- this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);
- this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);
- this.off();
- }
- /**
- * return the main playlist object if we have one
- *
- * @return {Object} the main playlist object that we parsed
- */
-
- main() {
- return this.mainPlaylistLoader_.main;
- }
- /**
- * return the currently selected playlist
- *
- * @return {Object} the currently selected playlist object that we parsed
- */
-
- media() {
- // playlist loader will not return media if it has not been fully loaded
- return this.mainPlaylistLoader_.media() || this.initialMedia_;
- }
- areMediaTypesKnown_() {
- const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
- const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info
- // otherwise check on the segment loader.
-
- const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs
-
- if (!hasMainMediaInfo || !hasAudioMediaInfo) {
- return false;
- }
- return true;
- }
- getCodecsOrExclude_() {
- const media = {
- main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},
- audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}
- };
- const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set "main" media equal to video
-
- media.video = media.main;
- const playlistCodecs = codecsForPlaylist(this.main(), playlist);
- const codecs = {};
- const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
- if (media.main.hasVideo) {
- codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;
- }
- if (media.main.isMuxed) {
- codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;
- }
- if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {
- codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct "supports" function below
-
- media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;
- } // no codecs, no playback.
-
- if (!codecs.audio && !codecs.video) {
- this.excludePlaylist({
- playlistToExclude: playlist,
- error: {
- message: 'Could not determine codecs for playlist.'
- },
- playlistExclusionDuration: Infinity
- });
- return;
- } // fmp4 relies on browser support, while ts relies on muxer support
-
- const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);
- const unsupportedCodecs = {};
- let unsupportedAudio;
- ['video', 'audio'].forEach(function (type) {
- if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {
- const supporter = media[type].isFmp4 ? 'browser' : 'muxer';
- unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];
- unsupportedCodecs[supporter].push(codecs[type]);
- if (type === 'audio') {
- unsupportedAudio = supporter;
- }
- }
- });
- if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {
- const audioGroup = playlist.attributes.AUDIO;
- this.main().playlists.forEach(variant => {
- const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;
- if (variantAudioGroup === audioGroup && variant !== playlist) {
- variant.excludeUntil = Infinity;
- }
- });
- this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): "${codecs.audio}"`);
- } // if we have any unsupported codecs exclude this playlist.
-
- if (Object.keys(unsupportedCodecs).length) {
- const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {
- if (acc) {
- acc += ', ';
- }
- acc += `${supporter} does not support codec(s): "${unsupportedCodecs[supporter].join(',')}"`;
- return acc;
- }, '') + '.';
- this.excludePlaylist({
- playlistToExclude: playlist,
- error: {
- internal: true,
- message
- },
- playlistExclusionDuration: Infinity
- });
- return;
- } // check if codec switching is happening
-
- if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {
- const switchMessages = [];
- ['video', 'audio'].forEach(type => {
- const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;
- const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;
- if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {
- switchMessages.push(`"${this.sourceUpdater_.codecs[type]}" -> "${codecs[type]}"`);
- }
- });
- if (switchMessages.length) {
- this.excludePlaylist({
- playlistToExclude: playlist,
- error: {
- message: `Codec switching not supported: ${switchMessages.join(', ')}.`,
- internal: true
- },
- playlistExclusionDuration: Infinity
- });
- return;
- }
- } // TODO: when using the muxer shouldn't we just return
- // the codecs that the muxer outputs?
-
- return codecs;
- }
- /**
- * Create source buffers and exlude any incompatible renditions.
- *
- * @private
- */
-
- tryToCreateSourceBuffers_() {
- // media source is not ready yet or sourceBuffers are already
- // created.
- if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {
- return;
- }
- if (!this.areMediaTypesKnown_()) {
- return;
- }
- const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
-
- if (!codecs) {
- return;
- }
- this.sourceUpdater_.createSourceBuffers(codecs);
- const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');
- this.excludeIncompatibleVariants_(codecString);
- }
- /**
- * Excludes playlists with codecs that are unsupported by the muxer and browser.
- */
-
- excludeUnsupportedVariants_() {
- const playlists = this.main().playlists;
- const ids = []; // TODO: why don't we have a property to loop through all
- // playlist? Why did we ever mix indexes and keys?
-
- Object.keys(playlists).forEach(key => {
- const variant = playlists[key]; // check if we already processed this playlist.
-
- if (ids.indexOf(variant.id) !== -1) {
- return;
- }
- ids.push(variant.id);
- const codecs = codecsForPlaylist(this.main, variant);
- const unsupported = [];
- if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {
- unsupported.push(`audio codec ${codecs.audio}`);
- }
- if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {
- unsupported.push(`video codec ${codecs.video}`);
- }
- if (codecs.text && codecs.text === 'stpp.ttml.im1t') {
- unsupported.push(`text codec ${codecs.text}`);
- }
- if (unsupported.length) {
- variant.excludeUntil = Infinity;
- this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);
- }
- });
- }
- /**
- * Exclude playlists that are known to be codec or
- * stream-incompatible with the SourceBuffer configuration. For
- * instance, Media Source Extensions would cause the video element to
- * stall waiting for video data if you switched from a variant with
- * video and audio to an audio-only one.
- *
- * @param {Object} media a media playlist compatible with the current
- * set of SourceBuffers. Variants in the current main playlist that
- * do not appear to have compatible codec or stream configurations
- * will be excluded from the default playlist selection algorithm
- * indefinitely.
- * @private
- */
-
- excludeIncompatibleVariants_(codecString) {
- const ids = [];
- const playlists = this.main().playlists;
- const codecs = unwrapCodecList(parseCodecs(codecString));
- const codecCount_ = codecCount(codecs);
- const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;
- const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;
- Object.keys(playlists).forEach(key => {
- const variant = playlists[key]; // check if we already processed this playlist.
- // or it if it is already excluded forever.
-
- if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {
- return;
- }
- ids.push(variant.id);
- const exclusionReasons = []; // get codecs from the playlist for this variant
-
- const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);
- const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this
- // variant is incompatible. Wait for mux.js to probe
-
- if (!variantCodecs.audio && !variantCodecs.video) {
- return;
- } // TODO: we can support this by removing the
- // old media source and creating a new one, but it will take some work.
- // The number of streams cannot change
-
- if (variantCodecCount !== codecCount_) {
- exclusionReasons.push(`codec count "${variantCodecCount}" !== "${codecCount_}"`);
- } // only exclude playlists by codec change, if codecs cannot switch
- // during playback.
-
- if (!this.sourceUpdater_.canChangeType()) {
- const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;
- const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change
-
- if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {
- exclusionReasons.push(`video codec "${variantVideoDetails.type}" !== "${videoDetails.type}"`);
- } // the audio codec cannot change
-
- if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {
- exclusionReasons.push(`audio codec "${variantAudioDetails.type}" !== "${audioDetails.type}"`);
- }
- }
- if (exclusionReasons.length) {
- variant.excludeUntil = Infinity;
- this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);
- }
- });
- }
- updateAdCues_(media) {
- let offset = 0;
- const seekable = this.seekable();
- if (seekable.length) {
- offset = seekable.start(0);
- }
- updateAdCues(media, this.cueTagsTrack_, offset);
- }
- /**
- * Calculates the desired forward buffer length based on current time
- *
- * @return {number} Desired forward buffer length in seconds
- */
-
- goalBufferLength() {
- const currentTime = this.tech_.currentTime();
- const initial = Config.GOAL_BUFFER_LENGTH;
- const rate = Config.GOAL_BUFFER_LENGTH_RATE;
- const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);
- return Math.min(initial + currentTime * rate, max);
- }
- /**
- * Calculates the desired buffer low water line based on current time
- *
- * @return {number} Desired buffer low water line in seconds
- */
-
- bufferLowWaterLine() {
- const currentTime = this.tech_.currentTime();
- const initial = Config.BUFFER_LOW_WATER_LINE;
- const rate = Config.BUFFER_LOW_WATER_LINE_RATE;
- const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);
- const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);
- return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);
- }
- bufferHighWaterLine() {
- return Config.BUFFER_HIGH_WATER_LINE;
- }
- addDateRangesToTextTrack_(dateRanges) {
- createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);
- addDateRangeMetadata({
- inbandTextTracks: this.inbandTextTracks_,
- dateRanges
- });
- }
- addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {
- const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed
- // audio/video source with a metadata track, and an alt audio with a metadata track.
- // However, this probably won't happen, and if it does it can be handled then.
-
- createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);
- addMetadata({
- inbandTextTracks: this.inbandTextTracks_,
- metadataArray,
- timestampOffset,
- videoDuration
- });
- }
- /**
- * Utility for getting the pathway or service location from an HLS or DASH playlist.
- *
- * @param {Object} playlist for getting pathway from.
- * @return the pathway attribute of a playlist
- */
-
- pathwayAttribute_(playlist) {
- return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;
- }
- /**
- * Initialize available pathways and apply the tag properties.
- */
-
- initContentSteeringController_() {
- const main = this.main();
- if (!main.contentSteering) {
- return;
- }
- for (const playlist of main.playlists) {
- this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));
- }
- this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); // request the steering manifest immediately if queryBeforeStart is set.
-
- if (this.contentSteeringController_.queryBeforeStart) {
- // When queryBeforeStart is true, initial request should omit steering parameters.
- this.contentSteeringController_.requestSteeringManifest(true);
- return;
- } // otherwise start content steering after playback starts
-
- this.tech_.one('canplay', () => {
- this.contentSteeringController_.requestSteeringManifest();
- });
- }
- /**
- * Reset the content steering controller and re-init.
- */
-
- resetContentSteeringController_() {
- this.contentSteeringController_.clearAvailablePathways();
- this.contentSteeringController_.dispose();
- this.initContentSteeringController_();
- }
- /**
- * Attaches the listeners for content steering.
- */
-
- attachContentSteeringListeners_() {
- this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this));
- if (this.sourceType_ === 'dash') {
- this.mainPlaylistLoader_.on('loadedplaylist', () => {
- const main = this.main(); // check if steering tag or pathways changed.
-
- const didDashTagChange = this.contentSteeringController_.didDASHTagChange(main.uri, main.contentSteering);
- const didPathwaysChange = () => {
- const availablePathways = this.contentSteeringController_.getAvailablePathways();
- const newPathways = [];
- for (const playlist of main.playlists) {
- const serviceLocation = playlist.attributes.serviceLocation;
- if (serviceLocation) {
- newPathways.push(serviceLocation);
- if (!availablePathways.has(serviceLocation)) {
- return true;
- }
- }
- } // If we have no new serviceLocations and previously had availablePathways
-
- if (!newPathways.length && availablePathways.size) {
- return true;
- }
- return false;
- };
- if (didDashTagChange || didPathwaysChange()) {
- this.resetContentSteeringController_();
- }
- });
- }
- }
- /**
- * Simple exclude and change playlist logic for content steering.
- */
-
- excludeThenChangePathway_() {
- const currentPathway = this.contentSteeringController_.getPathway();
- if (!currentPathway) {
- return;
- }
- this.handlePathwayClones_();
- const main = this.main();
- const playlists = main.playlists;
- const ids = new Set();
- let didEnablePlaylists = false;
- Object.keys(playlists).forEach(key => {
- const variant = playlists[key];
- const pathwayId = this.pathwayAttribute_(variant);
- const differentPathwayId = pathwayId && currentPathway !== pathwayId;
- const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';
- if (steeringExclusion && !differentPathwayId) {
- delete variant.excludeUntil;
- delete variant.lastExcludeReason_;
- didEnablePlaylists = true;
- }
- const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;
- const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;
- if (!shouldExclude) {
- return;
- }
- ids.add(variant.id);
- variant.excludeUntil = Infinity;
- variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.
-
- this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);
- });
- if (this.contentSteeringController_.manifestType_ === 'DASH') {
- Object.keys(this.mediaTypes_).forEach(key => {
- const type = this.mediaTypes_[key];
- if (type.activePlaylistLoader) {
- const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN
-
- if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {
- didEnablePlaylists = true;
- }
- }
- });
- }
- if (didEnablePlaylists) {
- this.changeSegmentPathway_();
- }
- }
- /**
- * Add, update, or delete playlists and media groups for
- * the pathway clones for HLS Content Steering.
- *
- * See https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
- *
- * NOTE: Pathway cloning does not currently support the `PER_VARIANT_URIS` and
- * `PER_RENDITION_URIS` as we do not handle `STABLE-VARIANT-ID` or
- * `STABLE-RENDITION-ID` values.
- */
-
- handlePathwayClones_() {
- const main = this.main();
- const playlists = main.playlists;
- const currentPathwayClones = this.contentSteeringController_.currentPathwayClones;
- const nextPathwayClones = this.contentSteeringController_.nextPathwayClones;
- const hasClones = currentPathwayClones && currentPathwayClones.size || nextPathwayClones && nextPathwayClones.size;
- if (!hasClones) {
- return;
- }
- for (const [id, clone] of currentPathwayClones.entries()) {
- const newClone = nextPathwayClones.get(id); // Delete the old pathway clone.
-
- if (!newClone) {
- this.mainPlaylistLoader_.updateOrDeleteClone(clone);
- this.contentSteeringController_.excludePathway(id);
- }
- }
- for (const [id, clone] of nextPathwayClones.entries()) {
- const oldClone = currentPathwayClones.get(id); // Create a new pathway if it is a new pathway clone object.
-
- if (!oldClone) {
- const playlistsToClone = playlists.filter(p => {
- return p.attributes['PATHWAY-ID'] === clone['BASE-ID'];
- });
- playlistsToClone.forEach(p => {
- this.mainPlaylistLoader_.addClonePathway(clone, p);
- });
- this.contentSteeringController_.addAvailablePathway(id);
- continue;
- } // There have not been changes to the pathway clone object, so skip.
-
- if (this.equalPathwayClones_(oldClone, clone)) {
- continue;
- } // Update a preexisting cloned pathway.
- // True is set for the update flag.
-
- this.mainPlaylistLoader_.updateOrDeleteClone(clone, true);
- this.contentSteeringController_.addAvailablePathway(id);
- } // Deep copy contents of next to current pathways.
-
- this.contentSteeringController_.currentPathwayClones = new Map(JSON.parse(JSON.stringify([...nextPathwayClones])));
- }
- /**
- * Determines whether two pathway clone objects are equivalent.
- *
- * @param {Object} a The first pathway clone object.
- * @param {Object} b The second pathway clone object.
- * @return {boolean} True if the pathway clone objects are equal, false otherwise.
- */
-
- equalPathwayClones_(a, b) {
- if (a['BASE-ID'] !== b['BASE-ID'] || a.ID !== b.ID || a['URI-REPLACEMENT'].HOST !== b['URI-REPLACEMENT'].HOST) {
- return false;
- }
- const aParams = a['URI-REPLACEMENT'].PARAMS;
- const bParams = b['URI-REPLACEMENT'].PARAMS; // We need to iterate through both lists of params because one could be
- // missing a parameter that the other has.
-
- for (const p in aParams) {
- if (aParams[p] !== bParams[p]) {
- return false;
- }
- }
- for (const p in bParams) {
- if (aParams[p] !== bParams[p]) {
- return false;
- }
- }
- return true;
- }
- /**
- * Changes the current playlists for audio, video and subtitles after a new pathway
- * is chosen from content steering.
- */
-
- changeSegmentPathway_() {
- const nextPlaylist = this.selectPlaylist();
- this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH
-
- if (this.contentSteeringController_.manifestType_ === 'DASH') {
- this.switchMediaForDASHContentSteering_();
- }
- this.switchMedia_(nextPlaylist, 'content-steering');
- }
- /**
- * Iterates through playlists and check their keyId set and compare with the
- * keyStatusMap, only enable playlists that have a usable key. If the playlist
- * has no keyId leave it enabled by default.
- */
-
- excludeNonUsablePlaylistsByKeyId_() {
- if (!this.mainPlaylistLoader_ || !this.mainPlaylistLoader_.main) {
- return;
- }
- let nonUsableKeyStatusCount = 0;
- const NON_USABLE = 'non-usable';
- this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
- const keyIdSet = this.mainPlaylistLoader_.getKeyIdSet(playlist); // If the playlist doesn't have keyIDs lets not exclude it.
-
- if (!keyIdSet || !keyIdSet.size) {
- return;
- }
- keyIdSet.forEach(key => {
- const USABLE = 'usable';
- const hasUsableKeyStatus = this.keyStatusMap_.has(key) && this.keyStatusMap_.get(key) === USABLE;
- const nonUsableExclusion = playlist.lastExcludeReason_ === NON_USABLE && playlist.excludeUntil === Infinity;
- if (!hasUsableKeyStatus) {
- // Only exclude playlists that haven't already been excluded as non-usable.
- if (playlist.excludeUntil !== Infinity && playlist.lastExcludeReason_ !== NON_USABLE) {
- playlist.excludeUntil = Infinity;
- playlist.lastExcludeReason_ = NON_USABLE;
- this.logger_(`excluding playlist ${playlist.id} because the key ID ${key} doesn't exist in the keyStatusMap or is not ${USABLE}`);
- } // count all nonUsableKeyStatus
-
- nonUsableKeyStatusCount++;
- } else if (hasUsableKeyStatus && nonUsableExclusion) {
- delete playlist.excludeUntil;
- delete playlist.lastExcludeReason_;
- this.logger_(`enabling playlist ${playlist.id} because key ID ${key} is ${USABLE}`);
- }
- });
- }); // If for whatever reason every playlist has a non usable key status. Lets try re-including the SD renditions as a failsafe.
-
- if (nonUsableKeyStatusCount >= this.mainPlaylistLoader_.main.playlists.length) {
- this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
- const isNonHD = playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height < 720;
- const excludedForNonUsableKey = playlist.excludeUntil === Infinity && playlist.lastExcludeReason_ === NON_USABLE;
- if (isNonHD && excludedForNonUsableKey) {
- // Only delete the excludeUntil so we don't try and re-exclude these playlists.
- delete playlist.excludeUntil;
- videojs.log.warn(`enabling non-HD playlist ${playlist.id} because all playlists were excluded due to ${NON_USABLE} key IDs`);
- }
- });
- }
- }
- /**
- * Adds a keystatus to the keystatus map, tries to convert to string if necessary.
- *
- * @param {any} keyId the keyId to add a status for
- * @param {string} status the status of the keyId
- */
-
- addKeyStatus_(keyId, status) {
- const isString = typeof keyId === 'string';
- const keyIdHexString = isString ? keyId : bufferToHexString(keyId);
- const formattedKeyIdString = keyIdHexString.slice(0, 32).toLowerCase();
- this.logger_(`KeyStatus '${status}' with key ID ${formattedKeyIdString} added to the keyStatusMap`);
- this.keyStatusMap_.set(formattedKeyIdString, status);
- }
- /**
- * Utility function for adding key status to the keyStatusMap and filtering usable encrypted playlists.
- *
- * @param {any} keyId the keyId from the keystatuschange event
- * @param {string} status the key status string
- */
-
- updatePlaylistByKeyStatus(keyId, status) {
- this.addKeyStatus_(keyId, status);
- if (!this.waitingForFastQualityPlaylistReceived_) {
- this.excludeNonUsableThenChangePlaylist_();
- } // Listen to loadedplaylist with a single listener and check for new contentProtection elements when a playlist is updated.
-
- this.mainPlaylistLoader_.off('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
- this.mainPlaylistLoader_.on('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
- }
- excludeNonUsableThenChangePlaylist_() {
- this.excludeNonUsablePlaylistsByKeyId_();
- this.fastQualityChange_();
- }
- }
-
- /**
- * Returns a function that acts as the Enable/disable playlist function.
- *
- * @param {PlaylistLoader} loader - The main playlist loader
- * @param {string} playlistID - id of the playlist
- * @param {Function} changePlaylistFn - A function to be called after a
- * playlist's enabled-state has been changed. Will NOT be called if a
- * playlist's enabled-state is unchanged
- * @param {boolean=} enable - Value to set the playlist enabled-state to
- * or if undefined returns the current enabled-state for the playlist
- * @return {Function} Function for setting/getting enabled
- */
-
- const enableFunction = (loader, playlistID, changePlaylistFn) => enable => {
- const playlist = loader.main.playlists[playlistID];
- const incompatible = isIncompatible(playlist);
- const currentlyEnabled = isEnabled(playlist);
- if (typeof enable === 'undefined') {
- return currentlyEnabled;
- }
- if (enable) {
- delete playlist.disabled;
- } else {
- playlist.disabled = true;
- }
- if (enable !== currentlyEnabled && !incompatible) {
- // Ensure the outside world knows about our changes
- changePlaylistFn(playlist);
- if (enable) {
- loader.trigger('renditionenabled');
- } else {
- loader.trigger('renditiondisabled');
- }
- }
- return enable;
- };
- /**
- * The representation object encapsulates the publicly visible information
- * in a media playlist along with a setter/getter-type function (enabled)
- * for changing the enabled-state of a particular playlist entry
- *
- * @class Representation
- */
-
- class Representation {
- constructor(vhsHandler, playlist, id) {
- const {
- playlistController_: pc
- } = vhsHandler;
- const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional
-
- if (playlist.attributes) {
- const resolution = playlist.attributes.RESOLUTION;
- this.width = resolution && resolution.width;
- this.height = resolution && resolution.height;
- this.bandwidth = playlist.attributes.BANDWIDTH;
- this.frameRate = playlist.attributes['FRAME-RATE'];
- }
- this.codecs = codecsForPlaylist(pc.main(), playlist);
- this.playlist = playlist; // The id is simply the ordinality of the media playlist
- // within the main playlist
-
- this.id = id; // Partially-apply the enableFunction to create a playlist-
- // specific variant
-
- this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);
- }
- }
- /**
- * A mixin function that adds the `representations` api to an instance
- * of the VhsHandler class
- *
- * @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the
- * representation API into
- */
-
- const renditionSelectionMixin = function (vhsHandler) {
- // Add a single API-specific function to the VhsHandler instance
- vhsHandler.representations = () => {
- const main = vhsHandler.playlistController_.main();
- const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;
- if (!playlists) {
- return [];
- }
- return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));
- };
- };
-
- /**
- * @file playback-watcher.js
- *
- * Playback starts, and now my watch begins. It shall not end until my death. I shall
- * take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns
- * and win no glory. I shall live and die at my post. I am the corrector of the underflow.
- * I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge
- * my life and honor to the Playback Watch, for this Player and all the Players to come.
- */
-
- const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];
- /**
- * @class PlaybackWatcher
- */
-
- class PlaybackWatcher {
- /**
- * Represents an PlaybackWatcher object.
- *
- * @class
- * @param {Object} options an object that includes the tech and settings
- */
- constructor(options) {
- this.playlistController_ = options.playlistController;
- this.tech_ = options.tech;
- this.seekable = options.seekable;
- this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;
- this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;
- this.media = options.media;
- this.consecutiveUpdates = 0;
- this.lastRecordedTime = null;
- this.checkCurrentTimeTimeout_ = null;
- this.logger_ = logger('PlaybackWatcher');
- this.logger_('initialize');
- const playHandler = () => this.monitorCurrentTime_();
- const canPlayHandler = () => this.monitorCurrentTime_();
- const waitingHandler = () => this.techWaiting_();
- const cancelTimerHandler = () => this.resetTimeUpdate_();
- const pc = this.playlistController_;
- const loaderTypes = ['main', 'subtitle', 'audio'];
- const loaderChecks = {};
- loaderTypes.forEach(type => {
- loaderChecks[type] = {
- reset: () => this.resetSegmentDownloads_(type),
- updateend: () => this.checkSegmentDownloads_(type)
- };
- pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer
- // isn't changing we want to reset. We cannot assume that the new rendition
- // will also be stalled, until after new appends.
-
- pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.
- // This prevents one segment playlists (single vtt or single segment content)
- // from being detected as stalling. As the buffer will not change in those cases, since
- // the buffer is the entire video duration.
-
- this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);
- });
- /**
- * We check if a seek was into a gap through the following steps:
- * 1. We get a seeking event and we do not get a seeked event. This means that
- * a seek was attempted but not completed.
- * 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already
- * removed everything from our buffer and appended a segment, and should be ready
- * to check for gaps.
- */
-
- const setSeekingHandlers = fn => {
- ['main', 'audio'].forEach(type => {
- pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);
- });
- };
- this.seekingAppendCheck_ = () => {
- if (this.fixesBadSeeks_()) {
- this.consecutiveUpdates = 0;
- this.lastRecordedTime = this.tech_.currentTime();
- setSeekingHandlers('off');
- }
- };
- this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');
- this.watchForBadSeeking_ = () => {
- this.clearSeekingAppendCheck_();
- setSeekingHandlers('on');
- };
- this.tech_.on('seeked', this.clearSeekingAppendCheck_);
- this.tech_.on('seeking', this.watchForBadSeeking_);
- this.tech_.on('waiting', waitingHandler);
- this.tech_.on(timerCancelEvents, cancelTimerHandler);
- this.tech_.on('canplay', canPlayHandler);
- /*
- An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case
- is surfaced in one of two ways:
- 1) The `waiting` event is fired before the player has buffered content, making it impossible
- to find or skip the gap. The `waiting` event is followed by a `play` event. On first play
- we can check if playback is stalled due to a gap, and skip the gap if necessary.
- 2) A source with a gap at the beginning of the stream is loaded programatically while the player
- is in a playing state. To catch this case, it's important that our one-time play listener is setup
- even if the player is in a playing state
- */
-
- this.tech_.one('play', playHandler); // Define the dispose function to clean up our events
-
- this.dispose = () => {
- this.clearSeekingAppendCheck_();
- this.logger_('dispose');
- this.tech_.off('waiting', waitingHandler);
- this.tech_.off(timerCancelEvents, cancelTimerHandler);
- this.tech_.off('canplay', canPlayHandler);
- this.tech_.off('play', playHandler);
- this.tech_.off('seeking', this.watchForBadSeeking_);
- this.tech_.off('seeked', this.clearSeekingAppendCheck_);
- loaderTypes.forEach(type => {
- pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);
- pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);
- this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);
- });
- if (this.checkCurrentTimeTimeout_) {
- window.clearTimeout(this.checkCurrentTimeTimeout_);
- }
- this.resetTimeUpdate_();
- };
- }
- /**
- * Periodically check current time to see if playback stopped
- *
- * @private
- */
-
- monitorCurrentTime_() {
- this.checkCurrentTime_();
- if (this.checkCurrentTimeTimeout_) {
- window.clearTimeout(this.checkCurrentTimeTimeout_);
- } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
-
- this.checkCurrentTimeTimeout_ = window.setTimeout(this.monitorCurrentTime_.bind(this), 250);
- }
- /**
- * Reset stalled download stats for a specific type of loader
- *
- * @param {string} type
- * The segment loader type to check.
- *
- * @listens SegmentLoader#playlistupdate
- * @listens Tech#seeking
- * @listens Tech#seeked
- */
-
- resetSegmentDownloads_(type) {
- const loader = this.playlistController_[`${type}SegmentLoader_`];
- if (this[`${type}StalledDownloads_`] > 0) {
- this.logger_(`resetting possible stalled download count for ${type} loader`);
- }
- this[`${type}StalledDownloads_`] = 0;
- this[`${type}Buffered_`] = loader.buffered_();
- }
- /**
- * Checks on every segment `appendsdone` to see
- * if segment appends are making progress. If they are not
- * and we are still downloading bytes. We exclude the playlist.
- *
- * @param {string} type
- * The segment loader type to check.
- *
- * @listens SegmentLoader#appendsdone
- */
-
- checkSegmentDownloads_(type) {
- const pc = this.playlistController_;
- const loader = pc[`${type}SegmentLoader_`];
- const buffered = loader.buffered_();
- const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);
- this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or
- // the buffered value for this loader changed
- // appends are working
-
- if (isBufferedDifferent) {
- this.resetSegmentDownloads_(type);
- return;
- }
- this[`${type}StalledDownloads_`]++;
- this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {
- playlistId: loader.playlist_ && loader.playlist_.id,
- buffered: timeRangesToArray(buffered)
- }); // after 10 possibly stalled appends with no reset, exclude
-
- if (this[`${type}StalledDownloads_`] < 10) {
- return;
- }
- this.logger_(`${type} loader stalled download exclusion`);
- this.resetSegmentDownloads_(type);
- this.tech_.trigger({
- type: 'usage',
- name: `vhs-${type}-download-exclusion`
- });
- if (type === 'subtitle') {
- return;
- } // TODO: should we exclude audio tracks rather than main tracks
- // when type is audio?
-
- pc.excludePlaylist({
- error: {
- message: `Excessive ${type} segment downloading detected.`
- },
- playlistExclusionDuration: Infinity
- });
- }
- /**
- * The purpose of this function is to emulate the "waiting" event on
- * browsers that do not emit it when they are waiting for more
- * data to continue playback
- *
- * @private
- */
-
- checkCurrentTime_() {
- if (this.tech_.paused() || this.tech_.seeking()) {
- return;
- }
- const currentTime = this.tech_.currentTime();
- const buffered = this.tech_.buffered();
- if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {
- // If current time is at the end of the final buffered region, then any playback
- // stall is most likely caused by buffering in a low bandwidth environment. The tech
- // should fire a `waiting` event in this scenario, but due to browser and tech
- // inconsistencies. Calling `techWaiting_` here allows us to simulate
- // responding to a native `waiting` event when the tech fails to emit one.
- return this.techWaiting_();
- }
- if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {
- this.consecutiveUpdates++;
- this.waiting_();
- } else if (currentTime === this.lastRecordedTime) {
- this.consecutiveUpdates++;
- } else {
- this.consecutiveUpdates = 0;
- this.lastRecordedTime = currentTime;
- }
- }
- /**
- * Resets the 'timeupdate' mechanism designed to detect that we are stalled
- *
- * @private
- */
-
- resetTimeUpdate_() {
- this.consecutiveUpdates = 0;
- }
- /**
- * Fixes situations where there's a bad seek
- *
- * @return {boolean} whether an action was taken to fix the seek
- * @private
- */
-
- fixesBadSeeks_() {
- const seeking = this.tech_.seeking();
- if (!seeking) {
- return false;
- } // TODO: It's possible that these seekable checks should be moved out of this function
- // and into a function that runs on seekablechange. It's also possible that we only need
- // afterSeekableWindow as the buffered check at the bottom is good enough to handle before
- // seekable range.
-
- const seekable = this.seekable();
- const currentTime = this.tech_.currentTime();
- const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);
- let seekTo;
- if (isAfterSeekableRange) {
- const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)
-
- seekTo = seekableEnd;
- }
- if (this.beforeSeekableWindow_(seekable, currentTime)) {
- const seekableStart = seekable.start(0); // sync to the beginning of the live window
- // provide a buffer of .1 seconds to handle rounding/imprecise numbers
-
- seekTo = seekableStart + (
- // if the playlist is too short and the seekable range is an exact time (can
- // happen in live with a 3 segment playlist), then don't use a time delta
- seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);
- }
- if (typeof seekTo !== 'undefined') {
- this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);
- this.tech_.setCurrentTime(seekTo);
- return true;
- }
- const sourceUpdater = this.playlistController_.sourceUpdater_;
- const buffered = this.tech_.buffered();
- const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;
- const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;
- const media = this.media(); // verify that at least two segment durations or one part duration have been
- // appended before checking for a gap.
-
- const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been
- // appended before checking for a gap.
-
- const bufferedToCheck = [audioBuffered, videoBuffered];
- for (let i = 0; i < bufferedToCheck.length; i++) {
- // skip null buffered
- if (!bufferedToCheck[i]) {
- continue;
- }
- const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part
- // duration behind we haven't appended enough to call this a bad seek.
-
- if (timeAhead < minAppendedDuration) {
- return false;
- }
- }
- const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered
- // to seek over the gap
-
- if (nextRange.length === 0) {
- return false;
- }
- seekTo = nextRange.start(0) + SAFE_TIME_DELTA;
- this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);
- this.tech_.setCurrentTime(seekTo);
- return true;
- }
- /**
- * Handler for situations when we determine the player is waiting.
- *
- * @private
- */
-
- waiting_() {
- if (this.techWaiting_()) {
- return;
- } // All tech waiting checks failed. Use last resort correction
-
- const currentTime = this.tech_.currentTime();
- const buffered = this.tech_.buffered();
- const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered
- // region with no indication that anything is amiss (seen in Firefox). Seeking to
- // currentTime is usually enough to kickstart the player. This checks that the player
- // is currently within a buffered region before attempting a corrective seek.
- // Chrome does not appear to continue `timeupdate` events after a `waiting` event
- // until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also
- // make sure there is ~3 seconds of forward buffer before taking any corrective action
- // to avoid triggering an `unknownwaiting` event when the network is slow.
-
- if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {
- this.resetTimeUpdate_();
- this.tech_.setCurrentTime(currentTime);
- this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS
-
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-unknown-waiting'
- });
- return;
- }
- }
- /**
- * Handler for situations when the tech fires a `waiting` event
- *
- * @return {boolean}
- * True if an action (or none) was needed to correct the waiting. False if no
- * checks passed
- * @private
- */
-
- techWaiting_() {
- const seekable = this.seekable();
- const currentTime = this.tech_.currentTime();
- if (this.tech_.seeking()) {
- // Tech is seeking or already waiting on another action, no action needed
- return true;
- }
- if (this.beforeSeekableWindow_(seekable, currentTime)) {
- const livePoint = seekable.end(seekable.length - 1);
- this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);
- this.resetTimeUpdate_();
- this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS
-
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-live-resync'
- });
- return true;
- }
- const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;
- const buffered = this.tech_.buffered();
- const videoUnderflow = this.videoUnderflow_({
- audioBuffered: sourceUpdater.audioBuffered(),
- videoBuffered: sourceUpdater.videoBuffered(),
- currentTime
- });
- if (videoUnderflow) {
- // Even though the video underflowed and was stuck in a gap, the audio overplayed
- // the gap, leading currentTime into a buffered range. Seeking to currentTime
- // allows the video to catch up to the audio position without losing any audio
- // (only suffering ~3 seconds of frozen video and a pause in audio playback).
- this.resetTimeUpdate_();
- this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS
-
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-video-underflow'
- });
- return true;
- }
- const nextRange = findNextRange(buffered, currentTime); // check for gap
-
- if (nextRange.length > 0) {
- this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);
- this.resetTimeUpdate_();
- this.skipTheGap_(currentTime);
- return true;
- } // All checks failed. Returning false to indicate failure to correct waiting
-
- return false;
- }
- afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {
- if (!seekable.length) {
- // we can't make a solid case if there's no seekable, default to false
- return false;
- }
- let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;
- const isLive = !playlist.endList;
- const isLLHLS = typeof playlist.partTargetDuration === 'number';
- if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {
- allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;
- }
- if (currentTime > allowedEnd) {
- return true;
- }
- return false;
- }
- beforeSeekableWindow_(seekable, currentTime) {
- if (seekable.length &&
- // can't fall before 0 and 0 seekable start identifies VOD stream
- seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {
- return true;
- }
- return false;
- }
- videoUnderflow_({
- videoBuffered,
- audioBuffered,
- currentTime
- }) {
- // audio only content will not have video underflow :)
- if (!videoBuffered) {
- return;
- }
- let gap; // find a gap in demuxed content.
-
- if (videoBuffered.length && audioBuffered.length) {
- // in Chrome audio will continue to play for ~3s when we run out of video
- // so we have to check that the video buffer did have some buffer in the
- // past.
- const lastVideoRange = findRange(videoBuffered, currentTime - 3);
- const videoRange = findRange(videoBuffered, currentTime);
- const audioRange = findRange(audioBuffered, currentTime);
- if (audioRange.length && !videoRange.length && lastVideoRange.length) {
- gap = {
- start: lastVideoRange.end(0),
- end: audioRange.end(0)
- };
- } // find a gap in muxed content.
- } else {
- const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are
- // stuck in a gap due to video underflow.
-
- if (!nextRange.length) {
- gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);
- }
- }
- if (gap) {
- this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);
- return true;
- }
- return false;
- }
- /**
- * Timer callback. If playback still has not proceeded, then we seek
- * to the start of the next buffered region.
- *
- * @private
- */
-
- skipTheGap_(scheduledCurrentTime) {
- const buffered = this.tech_.buffered();
- const currentTime = this.tech_.currentTime();
- const nextRange = findNextRange(buffered, currentTime);
- this.resetTimeUpdate_();
- if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {
- return;
- }
- this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played
-
- this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-gap-skip'
- });
- }
- gapFromVideoUnderflow_(buffered, currentTime) {
- // At least in Chrome, if there is a gap in the video buffer, the audio will continue
- // playing for ~3 seconds after the video gap starts. This is done to account for
- // video buffer underflow/underrun (note that this is not done when there is audio
- // buffer underflow/underrun -- in that case the video will stop as soon as it
- // encounters the gap, as audio stalls are more noticeable/jarring to a user than
- // video stalls). The player's time will reflect the playthrough of audio, so the
- // time will appear as if we are in a buffered region, even if we are stuck in a
- // "gap."
- //
- // Example:
- // video buffer: 0 => 10.1, 10.2 => 20
- // audio buffer: 0 => 20
- // overall buffer: 0 => 10.1, 10.2 => 20
- // current time: 13
- //
- // Chrome's video froze at 10 seconds, where the video buffer encountered the gap,
- // however, the audio continued playing until it reached ~3 seconds past the gap
- // (13 seconds), at which point it stops as well. Since current time is past the
- // gap, findNextRange will return no ranges.
- //
- // To check for this issue, we see if there is a gap that starts somewhere within
- // a 3 second range (3 seconds +/- 1 second) back from our current time.
- const gaps = findGaps(buffered);
- for (let i = 0; i < gaps.length; i++) {
- const start = gaps.start(i);
- const end = gaps.end(i); // gap is starts no more than 4 seconds back
-
- if (currentTime - start < 4 && currentTime - start > 2) {
- return {
- start,
- end
- };
- }
- }
- return null;
- }
- }
- const defaultOptions = {
- errorInterval: 30,
- getSource(next) {
- const tech = this.tech({
- IWillNotUseThisInPlugins: true
- });
- const sourceObj = tech.currentSource_ || this.currentSource();
- return next(sourceObj);
- }
- };
- /**
- * Main entry point for the plugin
- *
- * @param {Player} player a reference to a videojs Player instance
- * @param {Object} [options] an object with plugin options
- * @private
- */
-
- const initPlugin = function (player, options) {
- let lastCalled = 0;
- let seekTo = 0;
- const localOptions = merge(defaultOptions, options);
- player.ready(() => {
- player.trigger({
- type: 'usage',
- name: 'vhs-error-reload-initialized'
- });
- });
- /**
- * Player modifications to perform that must wait until `loadedmetadata`
- * has been triggered
- *
- * @private
- */
-
- const loadedMetadataHandler = function () {
- if (seekTo) {
- player.currentTime(seekTo);
- }
- };
- /**
- * Set the source on the player element, play, and seek if necessary
- *
- * @param {Object} sourceObj An object specifying the source url and mime-type to play
- * @private
- */
-
- const setSource = function (sourceObj) {
- if (sourceObj === null || sourceObj === undefined) {
- return;
- }
- seekTo = player.duration() !== Infinity && player.currentTime() || 0;
- player.one('loadedmetadata', loadedMetadataHandler);
- player.src(sourceObj);
- player.trigger({
- type: 'usage',
- name: 'vhs-error-reload'
- });
- player.play();
- };
- /**
- * Attempt to get a source from either the built-in getSource function
- * or a custom function provided via the options
- *
- * @private
- */
-
- const errorHandler = function () {
- // Do not attempt to reload the source if a source-reload occurred before
- // 'errorInterval' time has elapsed since the last source-reload
- if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {
- player.trigger({
- type: 'usage',
- name: 'vhs-error-reload-canceled'
- });
- return;
- }
- if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {
- videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');
- return;
- }
- lastCalled = Date.now();
- return localOptions.getSource.call(player, setSource);
- };
- /**
- * Unbind any event handlers that were bound by the plugin
- *
- * @private
- */
-
- const cleanupEvents = function () {
- player.off('loadedmetadata', loadedMetadataHandler);
- player.off('error', errorHandler);
- player.off('dispose', cleanupEvents);
- };
- /**
- * Cleanup before re-initializing the plugin
- *
- * @param {Object} [newOptions] an object with plugin options
- * @private
- */
-
- const reinitPlugin = function (newOptions) {
- cleanupEvents();
- initPlugin(player, newOptions);
- };
- player.on('error', errorHandler);
- player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before
- // initializing the plugin
-
- player.reloadSourceOnError = reinitPlugin;
- };
- /**
- * Reload the source when an error is detected as long as there
- * wasn't an error previously within the last 30 seconds
- *
- * @param {Object} [options] an object with plugin options
- */
-
- const reloadSourceOnError = function (options) {
- initPlugin(this, options);
- };
- var version$4 = "3.12.1";
- var version$3 = "7.0.3";
- var version$2 = "1.3.0";
- var version$1 = "7.1.0";
- var version = "4.0.1";
-
- /**
- * @file videojs-http-streaming.js
- *
- * The main file for the VHS project.
- * License: https://github.com/videojs/videojs-http-streaming/blob/main/LICENSE
- */
- const Vhs = {
- PlaylistLoader,
- Playlist,
- utils,
- STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,
- INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,
- lastBandwidthSelector,
- movingAverageBandwidthSelector,
- comparePlaylistBandwidth,
- comparePlaylistResolution,
- xhr: xhrFactory()
- }; // Define getter/setters for config properties
-
- Object.keys(Config).forEach(prop => {
- Object.defineProperty(Vhs, prop, {
- get() {
- videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
- return Config[prop];
- },
- set(value) {
- videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
- if (typeof value !== 'number' || value < 0) {
- videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);
- return;
- }
- Config[prop] = value;
- }
- });
- });
- const LOCAL_STORAGE_KEY = 'videojs-vhs';
- /**
- * Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.
- *
- * @param {QualityLevelList} qualityLevels The QualityLevelList to update.
- * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.
- * @function handleVhsMediaChange
- */
-
- const handleVhsMediaChange = function (qualityLevels, playlistLoader) {
- const newPlaylist = playlistLoader.media();
- let selectedIndex = -1;
- for (let i = 0; i < qualityLevels.length; i++) {
- if (qualityLevels[i].id === newPlaylist.id) {
- selectedIndex = i;
- break;
- }
- }
- qualityLevels.selectedIndex_ = selectedIndex;
- qualityLevels.trigger({
- selectedIndex,
- type: 'change'
- });
- };
- /**
- * Adds quality levels to list once playlist metadata is available
- *
- * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.
- * @param {Object} vhs Vhs object to listen to for media events.
- * @function handleVhsLoadedMetadata
- */
-
- const handleVhsLoadedMetadata = function (qualityLevels, vhs) {
- vhs.representations().forEach(rep => {
- qualityLevels.addQualityLevel(rep);
- });
- handleVhsMediaChange(qualityLevels, vhs.playlists);
- }; // VHS is a source handler, not a tech. Make sure attempts to use it
- // as one do not cause exceptions.
-
- Vhs.canPlaySource = function () {
- return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
- };
- const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {
- if (!keySystemOptions) {
- return keySystemOptions;
- }
- let codecs = {};
- if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {
- codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));
- }
- if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {
- codecs.audio = audioPlaylist.attributes.CODECS;
- }
- const videoContentType = getMimeForCodec(codecs.video);
- const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist
-
- const keySystemContentTypes = {};
- for (const keySystem in keySystemOptions) {
- keySystemContentTypes[keySystem] = {};
- if (audioContentType) {
- keySystemContentTypes[keySystem].audioContentType = audioContentType;
- }
- if (videoContentType) {
- keySystemContentTypes[keySystem].videoContentType = videoContentType;
- } // Default to using the video playlist's PSSH even though they may be different, as
- // videojs-contrib-eme will only accept one in the options.
- //
- // This shouldn't be an issue for most cases as early intialization will handle all
- // unique PSSH values, and if they aren't, then encrypted events should have the
- // specific information needed for the unique license.
-
- if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {
- keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;
- } // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'
- // so we need to prevent overwriting the URL entirely
-
- if (typeof keySystemOptions[keySystem] === 'string') {
- keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];
- }
- }
- return merge(keySystemOptions, keySystemContentTypes);
- };
- /**
- * @typedef {Object} KeySystems
- *
- * keySystems configuration for https://github.com/videojs/videojs-contrib-eme
- * Note: not all options are listed here.
- *
- * @property {Uint8Array} [pssh]
- * Protection System Specific Header
- */
-
- /**
- * Goes through all the playlists and collects an array of KeySystems options objects
- * containing each playlist's keySystems and their pssh values, if available.
- *
- * @param {Object[]} playlists
- * The playlists to look through
- * @param {string[]} keySystems
- * The keySystems to collect pssh values for
- *
- * @return {KeySystems[]}
- * An array of KeySystems objects containing available key systems and their
- * pssh values
- */
-
- const getAllPsshKeySystemsOptions = (playlists, keySystems) => {
- return playlists.reduce((keySystemsArr, playlist) => {
- if (!playlist.contentProtection) {
- return keySystemsArr;
- }
- const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {
- const keySystemOptions = playlist.contentProtection[keySystem];
- if (keySystemOptions && keySystemOptions.pssh) {
- keySystemsObj[keySystem] = {
- pssh: keySystemOptions.pssh
- };
- }
- return keySystemsObj;
- }, {});
- if (Object.keys(keySystemsOptions).length) {
- keySystemsArr.push(keySystemsOptions);
- }
- return keySystemsArr;
- }, []);
- };
- /**
- * Returns a promise that waits for the
- * [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.
- *
- * Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11
- * browsers.
- *
- * As per the above ticket, this is particularly important for Chrome, where, if
- * unencrypted content is appended before encrypted content and the key session has not
- * been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached
- * during playback.
- *
- * @param {Object} player
- * The player instance
- * @param {Object[]} sourceKeySystems
- * The key systems options from the player source
- * @param {Object} [audioMedia]
- * The active audio media playlist (optional)
- * @param {Object[]} mainPlaylists
- * The playlists found on the main playlist object
- *
- * @return {Object}
- * Promise that resolves when the key session has been created
- */
-
- const waitForKeySessionCreation = ({
- player,
- sourceKeySystems,
- audioMedia,
- mainPlaylists
- }) => {
- if (!player.eme.initializeMediaKeys) {
- return Promise.resolve();
- } // TODO should all audio PSSH values be initialized for DRM?
- //
- // All unique video rendition pssh values are initialized for DRM, but here only
- // the initial audio playlist license is initialized. In theory, an encrypted
- // event should be fired if the user switches to an alternative audio playlist
- // where a license is required, but this case hasn't yet been tested. In addition, there
- // may be many alternate audio playlists unlikely to be used (e.g., multiple different
- // languages).
-
- const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;
- const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));
- const initializationFinishedPromises = [];
- const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The
- // only place where it should not be deduped is for ms-prefixed APIs, but
- // the existence of modern EME APIs in addition to
- // ms-prefixed APIs on Edge should prevent this from being a concern.
- // initializeMediaKeys also won't use the webkit-prefixed APIs.
-
- keySystemsOptionsArr.forEach(keySystemsOptions => {
- keySessionCreatedPromises.push(new Promise((resolve, reject) => {
- player.tech_.one('keysessioncreated', resolve);
- }));
- initializationFinishedPromises.push(new Promise((resolve, reject) => {
- player.eme.initializeMediaKeys({
- keySystems: keySystemsOptions
- }, err => {
- if (err) {
- reject(err);
- return;
- }
- resolve();
- });
- }));
- }); // The reasons Promise.race is chosen over Promise.any:
- //
- // * Promise.any is only available in Safari 14+.
- // * None of these promises are expected to reject. If they do reject, it might be
- // better here for the race to surface the rejection, rather than mask it by using
- // Promise.any.
-
- return Promise.race([
- // If a session was previously created, these will all finish resolving without
- // creating a new session, otherwise it will take until the end of all license
- // requests, which is why the key session check is used (to make setup much faster).
- Promise.all(initializationFinishedPromises),
- // Once a single session is created, the browser knows DRM will be used.
- Promise.race(keySessionCreatedPromises)]);
- };
- /**
- * If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and
- * there are keySystems on the source, sets up source options to prepare the source for
- * eme.
- *
- * @param {Object} player
- * The player instance
- * @param {Object[]} sourceKeySystems
- * The key systems options from the player source
- * @param {Object} media
- * The active media playlist
- * @param {Object} [audioMedia]
- * The active audio media playlist (optional)
- *
- * @return {boolean}
- * Whether or not options were configured and EME is available
- */
-
- const setupEmeOptions = ({
- player,
- sourceKeySystems,
- media,
- audioMedia
- }) => {
- const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);
- if (!sourceOptions) {
- return false;
- }
- player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing
- // do nothing.
-
- if (sourceOptions && !player.eme) {
- videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');
- return false;
- }
- return true;
- };
- const getVhsLocalStorage = () => {
- if (!window.localStorage) {
- return null;
- }
- const storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY);
- if (!storedObject) {
- return null;
- }
- try {
- return JSON.parse(storedObject);
- } catch (e) {
- // someone may have tampered with the value
- return null;
- }
- };
- const updateVhsLocalStorage = options => {
- if (!window.localStorage) {
- return false;
- }
- let objectToStore = getVhsLocalStorage();
- objectToStore = objectToStore ? merge(objectToStore, options) : options;
- try {
- window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));
- } catch (e) {
- // Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where
- // storage is set to 0).
- // https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions
- // No need to perform any operation.
- return false;
- }
- return objectToStore;
- };
- /**
- * Parses VHS-supported media types from data URIs. See
- * https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
- * for information on data URIs.
- *
- * @param {string} dataUri
- * The data URI
- *
- * @return {string|Object}
- * The parsed object/string, or the original string if no supported media type
- * was found
- */
-
- const expandDataUri = dataUri => {
- if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {
- return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));
- } // no known case for this data URI, return the string as-is
-
- return dataUri;
- };
- /**
- * Adds a request hook to an xhr object
- *
- * @param {Object} xhr object to add the onRequest hook to
- * @param {function} callback hook function for an xhr request
- */
-
- const addOnRequestHook = (xhr, callback) => {
- if (!xhr._requestCallbackSet) {
- xhr._requestCallbackSet = new Set();
- }
- xhr._requestCallbackSet.add(callback);
- };
- /**
- * Adds a response hook to an xhr object
- *
- * @param {Object} xhr object to add the onResponse hook to
- * @param {function} callback hook function for an xhr response
- */
-
- const addOnResponseHook = (xhr, callback) => {
- if (!xhr._responseCallbackSet) {
- xhr._responseCallbackSet = new Set();
- }
- xhr._responseCallbackSet.add(callback);
- };
- /**
- * Removes a request hook on an xhr object, deletes the onRequest set if empty.
- *
- * @param {Object} xhr object to remove the onRequest hook from
- * @param {function} callback hook function to remove
- */
-
- const removeOnRequestHook = (xhr, callback) => {
- if (!xhr._requestCallbackSet) {
- return;
- }
- xhr._requestCallbackSet.delete(callback);
- if (!xhr._requestCallbackSet.size) {
- delete xhr._requestCallbackSet;
- }
- };
- /**
- * Removes a response hook on an xhr object, deletes the onResponse set if empty.
- *
- * @param {Object} xhr object to remove the onResponse hook from
- * @param {function} callback hook function to remove
- */
-
- const removeOnResponseHook = (xhr, callback) => {
- if (!xhr._responseCallbackSet) {
- return;
- }
- xhr._responseCallbackSet.delete(callback);
- if (!xhr._responseCallbackSet.size) {
- delete xhr._responseCallbackSet;
- }
- };
- /**
- * Whether the browser has built-in HLS support.
- */
-
- Vhs.supportsNativeHls = function () {
- if (!document || !document.createElement) {
- return false;
- }
- const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't
-
- if (!videojs.getTech('Html5').isSupported()) {
- return false;
- } // HLS manifests can go by many mime-types
-
- const canPlay = [
- // Apple santioned
- 'application/vnd.apple.mpegurl',
- // Apple sanctioned for backwards compatibility
- 'audio/mpegurl',
- // Very common
- 'audio/x-mpegurl',
- // Very common
- 'application/x-mpegurl',
- // Included for completeness
- 'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];
- return canPlay.some(function (canItPlay) {
- return /maybe|probably/i.test(video.canPlayType(canItPlay));
- });
- }();
- Vhs.supportsNativeDash = function () {
- if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {
- return false;
- }
- return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));
- }();
- Vhs.supportsTypeNatively = type => {
- if (type === 'hls') {
- return Vhs.supportsNativeHls;
- }
- if (type === 'dash') {
- return Vhs.supportsNativeDash;
- }
- return false;
- };
- /**
- * VHS is a source handler, not a tech. Make sure attempts to use it
- * as one do not cause exceptions.
- */
-
- Vhs.isSupported = function () {
- return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
- };
- /**
- * A global function for setting an onRequest hook
- *
- * @param {function} callback for request modifiction
- */
-
- Vhs.xhr.onRequest = function (callback) {
- addOnRequestHook(Vhs.xhr, callback);
- };
- /**
- * A global function for setting an onResponse hook
- *
- * @param {callback} callback for response data retrieval
- */
-
- Vhs.xhr.onResponse = function (callback) {
- addOnResponseHook(Vhs.xhr, callback);
- };
- /**
- * Deletes a global onRequest callback if it exists
- *
- * @param {function} callback to delete from the global set
- */
-
- Vhs.xhr.offRequest = function (callback) {
- removeOnRequestHook(Vhs.xhr, callback);
- };
- /**
- * Deletes a global onResponse callback if it exists
- *
- * @param {function} callback to delete from the global set
- */
-
- Vhs.xhr.offResponse = function (callback) {
- removeOnResponseHook(Vhs.xhr, callback);
- };
- const Component = videojs.getComponent('Component');
- /**
- * The Vhs Handler object, where we orchestrate all of the parts
- * of VHS to interact with video.js
- *
- * @class VhsHandler
- * @extends videojs.Component
- * @param {Object} source the soruce object
- * @param {Tech} tech the parent tech object
- * @param {Object} options optional and required options
- */
-
- class VhsHandler extends Component {
- constructor(source, tech, options) {
- super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed
- // use that over the VHS level `bandwidth` option
-
- if (typeof options.initialBandwidth === 'number') {
- this.options_.bandwidth = options.initialBandwidth;
- }
- this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,
- // so, get it from Video.js via the `playerId`
-
- if (tech.options_ && tech.options_.playerId) {
- const _player = videojs.getPlayer(tech.options_.playerId);
- this.player_ = _player;
- }
- this.tech_ = tech;
- this.source_ = source;
- this.stats = {};
- this.ignoreNextSeekingEvent_ = false;
- this.setOptions_();
- if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {
- tech.overrideNativeAudioTracks(true);
- tech.overrideNativeVideoTracks(true);
- } else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {
- // overriding native VHS only works if audio tracks have been emulated
- // error early if we're misconfigured
- throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');
- } // listen for fullscreenchange events for this player so that we
- // can adjust our quality selection quickly
-
- this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {
- const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;
- if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {
- this.playlistController_.fastQualityChange_();
- } else {
- // When leaving fullscreen, since the in page pixel dimensions should be smaller
- // than full screen, see if there should be a rendition switch down to preserve
- // bandwidth.
- this.playlistController_.checkABR_();
- }
- });
- this.on(this.tech_, 'seeking', function () {
- if (this.ignoreNextSeekingEvent_) {
- this.ignoreNextSeekingEvent_ = false;
- return;
- }
- this.setCurrentTime(this.tech_.currentTime());
- });
- this.on(this.tech_, 'error', function () {
- // verify that the error was real and we are loaded
- // enough to have pc loaded.
- if (this.tech_.error() && this.playlistController_) {
- this.playlistController_.pauseLoading();
- }
- });
- this.on(this.tech_, 'play', this.play);
- }
- /**
- * Set VHS options based on options from configuration, as well as partial
- * options to be passed at a later time.
- *
- * @param {Object} options A partial chunk of config options
- */
-
- setOptions_(options = {}) {
- this.options_ = merge(this.options_, options); // defaults
-
- this.options_.withCredentials = this.options_.withCredentials || false;
- this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;
- this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;
- this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;
- this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;
- this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;
- this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;
- this.options_.customTagParsers = this.options_.customTagParsers || [];
- this.options_.customTagMappers = this.options_.customTagMappers || [];
- this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;
- this.options_.llhls = this.options_.llhls === false ? false : true;
- this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;
- if (typeof this.options_.playlistExclusionDuration !== 'number') {
- this.options_.playlistExclusionDuration = 60;
- }
- if (typeof this.options_.bandwidth !== 'number') {
- if (this.options_.useBandwidthFromLocalStorage) {
- const storedObject = getVhsLocalStorage();
- if (storedObject && storedObject.bandwidth) {
- this.options_.bandwidth = storedObject.bandwidth;
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-bandwidth-from-local-storage'
- });
- }
- if (storedObject && storedObject.throughput) {
- this.options_.throughput = storedObject.throughput;
- this.tech_.trigger({
- type: 'usage',
- name: 'vhs-throughput-from-local-storage'
- });
- }
- }
- } // if bandwidth was not set by options or pulled from local storage, start playlist
- // selection at a reasonable bandwidth
-
- if (typeof this.options_.bandwidth !== 'number') {
- this.options_.bandwidth = Config.INITIAL_BANDWIDTH;
- } // If the bandwidth number is unchanged from the initial setting
- // then this takes precedence over the enableLowInitialPlaylist option
-
- this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src
-
- ['withCredentials', 'useDevicePixelRatio', 'customPixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {
- if (typeof this.source_[option] !== 'undefined') {
- this.options_[option] = this.source_[option];
- }
- });
- this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;
- this.useDevicePixelRatio = this.options_.useDevicePixelRatio;
- const customPixelRatio = this.options_.customPixelRatio; // Ensure the custom pixel ratio is a number greater than or equal to 0
-
- if (typeof customPixelRatio === 'number' && customPixelRatio >= 0) {
- this.customPixelRatio = customPixelRatio;
- }
- } // alias for public method to set options
-
- setOptions(options = {}) {
- this.setOptions_(options);
- }
- /**
- * called when player.src gets called, handle a new source
- *
- * @param {Object} src the source object to handle
- */
-
- src(src, type) {
- // do nothing if the src is falsey
- if (!src) {
- return;
- }
- this.setOptions_(); // add main playlist controller options
-
- this.options_.src = expandDataUri(this.source_.src);
- this.options_.tech = this.tech_;
- this.options_.externVhs = Vhs;
- this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech
-
- this.options_.seekTo = time => {
- this.tech_.setCurrentTime(time);
- };
- this.playlistController_ = new PlaylistController(this.options_);
- const playbackWatcherOptions = merge({
- liveRangeSafeTimeDelta: SAFE_TIME_DELTA
- }, this.options_, {
- seekable: () => this.seekable(),
- media: () => this.playlistController_.media(),
- playlistController: this.playlistController_
- });
- this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);
- this.playlistController_.on('error', () => {
- const player = videojs.players[this.tech_.options_.playerId];
- let error = this.playlistController_.error;
- if (typeof error === 'object' && !error.code) {
- error.code = 3;
- } else if (typeof error === 'string') {
- error = {
- message: error,
- code: 3
- };
- }
- player.error(error);
- });
- const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards
- // compatibility with < v2
-
- this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);
- this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2
-
- this.playlists = this.playlistController_.mainPlaylistLoader_;
- this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist
- // controller. Using a custom property for backwards compatibility
- // with < v2
-
- Object.defineProperties(this, {
- selectPlaylist: {
- get() {
- return this.playlistController_.selectPlaylist;
- },
- set(selectPlaylist) {
- this.playlistController_.selectPlaylist = selectPlaylist.bind(this);
- }
- },
- throughput: {
- get() {
- return this.playlistController_.mainSegmentLoader_.throughput.rate;
- },
- set(throughput) {
- this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value
- // for the cumulative average
-
- this.playlistController_.mainSegmentLoader_.throughput.count = 1;
- }
- },
- bandwidth: {
- get() {
- let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;
- const networkInformation = window.navigator.connection || window.navigator.mozConnection || window.navigator.webkitConnection;
- const tenMbpsAsBitsPerSecond = 10e6;
- if (this.options_.useNetworkInformationApi && networkInformation) {
- // downlink returns Mbps
- // https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink
- const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player
- // estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that
- // high quality streams are not filtered out.
-
- if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {
- playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);
- } else {
- playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;
- }
- }
- return playerBandwidthEst;
- },
- set(bandwidth) {
- this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter
- // `count` is set to zero that current value of `rate` isn't included
- // in the cumulative average
-
- this.playlistController_.mainSegmentLoader_.throughput = {
- rate: 0,
- count: 0
- };
- }
- },
- /**
- * `systemBandwidth` is a combination of two serial processes bit-rates. The first
- * is the network bitrate provided by `bandwidth` and the second is the bitrate of
- * the entire process after that - decryption, transmuxing, and appending - provided
- * by `throughput`.
- *
- * Since the two process are serial, the overall system bandwidth is given by:
- * sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)
- */
- systemBandwidth: {
- get() {
- const invBandwidth = 1 / (this.bandwidth || 1);
- let invThroughput;
- if (this.throughput > 0) {
- invThroughput = 1 / this.throughput;
- } else {
- invThroughput = 0;
- }
- const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));
- return systemBitrate;
- },
- set() {
- videojs.log.error('The "systemBandwidth" property is read-only');
- }
- }
- });
- if (this.options_.bandwidth) {
- this.bandwidth = this.options_.bandwidth;
- }
- if (this.options_.throughput) {
- this.throughput = this.options_.throughput;
- }
- Object.defineProperties(this.stats, {
- bandwidth: {
- get: () => this.bandwidth || 0,
- enumerable: true
- },
- mediaRequests: {
- get: () => this.playlistController_.mediaRequests_() || 0,
- enumerable: true
- },
- mediaRequestsAborted: {
- get: () => this.playlistController_.mediaRequestsAborted_() || 0,
- enumerable: true
- },
- mediaRequestsTimedout: {
- get: () => this.playlistController_.mediaRequestsTimedout_() || 0,
- enumerable: true
- },
- mediaRequestsErrored: {
- get: () => this.playlistController_.mediaRequestsErrored_() || 0,
- enumerable: true
- },
- mediaTransferDuration: {
- get: () => this.playlistController_.mediaTransferDuration_() || 0,
- enumerable: true
- },
- mediaBytesTransferred: {
- get: () => this.playlistController_.mediaBytesTransferred_() || 0,
- enumerable: true
- },
- mediaSecondsLoaded: {
- get: () => this.playlistController_.mediaSecondsLoaded_() || 0,
- enumerable: true
- },
- mediaAppends: {
- get: () => this.playlistController_.mediaAppends_() || 0,
- enumerable: true
- },
- mainAppendsToLoadedData: {
- get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,
- enumerable: true
- },
- audioAppendsToLoadedData: {
- get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,
- enumerable: true
- },
- appendsToLoadedData: {
- get: () => this.playlistController_.appendsToLoadedData_() || 0,
- enumerable: true
- },
- timeToLoadedData: {
- get: () => this.playlistController_.timeToLoadedData_() || 0,
- enumerable: true
- },
- buffered: {
- get: () => timeRangesToArray(this.tech_.buffered()),
- enumerable: true
- },
- currentTime: {
- get: () => this.tech_.currentTime(),
- enumerable: true
- },
- currentSource: {
- get: () => this.tech_.currentSource_,
- enumerable: true
- },
- currentTech: {
- get: () => this.tech_.name_,
- enumerable: true
- },
- duration: {
- get: () => this.tech_.duration(),
- enumerable: true
- },
- main: {
- get: () => this.playlists.main,
- enumerable: true
- },
- playerDimensions: {
- get: () => this.tech_.currentDimensions(),
- enumerable: true
- },
- seekable: {
- get: () => timeRangesToArray(this.tech_.seekable()),
- enumerable: true
- },
- timestamp: {
- get: () => Date.now(),
- enumerable: true
- },
- videoPlaybackQuality: {
- get: () => this.tech_.getVideoPlaybackQuality(),
- enumerable: true
- }
- });
- this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));
- this.tech_.on('bandwidthupdate', () => {
- if (this.options_.useBandwidthFromLocalStorage) {
- updateVhsLocalStorage({
- bandwidth: this.bandwidth,
- throughput: Math.round(this.throughput)
- });
- }
- });
- this.playlistController_.on('selectedinitialmedia', () => {
- // Add the manual rendition mix-in to VhsHandler
- renditionSelectionMixin(this);
- });
- this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {
- this.setupEme_();
- }); // the bandwidth of the primary segment loader is our best
- // estimate of overall bandwidth
-
- this.on(this.playlistController_, 'progress', function () {
- this.tech_.trigger('progress');
- }); // In the live case, we need to ignore the very first `seeking` event since
- // that will be the result of the seek-to-live behavior
-
- this.on(this.playlistController_, 'firstplay', function () {
- this.ignoreNextSeekingEvent_ = true;
- });
- this.setupQualityLevels_(); // do nothing if the tech has been disposed already
- // this can occur if someone sets the src in player.ready(), for instance
-
- if (!this.tech_.el()) {
- return;
- }
- this.mediaSourceUrl_ = window.URL.createObjectURL(this.playlistController_.mediaSource);
- this.tech_.src(this.mediaSourceUrl_);
- }
- createKeySessions_() {
- const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
- this.logger_('waiting for EME key session creation');
- waitForKeySessionCreation({
- player: this.player_,
- sourceKeySystems: this.source_.keySystems,
- audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),
- mainPlaylists: this.playlists.main.playlists
- }).then(() => {
- this.logger_('created EME key session');
- this.playlistController_.sourceUpdater_.initializedEme();
- }).catch(err => {
- this.logger_('error while creating EME key session', err);
- this.player_.error({
- message: 'Failed to initialize media keys for EME',
- code: 3,
- metadata: {
- errorType: videojs.Error.EMEKeySessionCreationError
- }
- });
- });
- }
- handleWaitingForKey_() {
- // If waitingforkey is fired, it's possible that the data that's necessary to retrieve
- // the key is in the manifest. While this should've happened on initial source load, it
- // may happen again in live streams where the keys change, and the manifest info
- // reflects the update.
- //
- // Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's
- // already requested keys for, we don't have to worry about this generating extraneous
- // requests.
- this.logger_('waitingforkey fired, attempting to create any new key sessions');
- this.createKeySessions_();
- }
- /**
- * If necessary and EME is available, sets up EME options and waits for key session
- * creation.
- *
- * This function also updates the source updater so taht it can be used, as for some
- * browsers, EME must be configured before content is appended (if appending unencrypted
- * content before encrypted content).
- */
-
- setupEme_() {
- const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
- const didSetupEmeOptions = setupEmeOptions({
- player: this.player_,
- sourceKeySystems: this.source_.keySystems,
- media: this.playlists.media(),
- audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()
- });
- this.player_.tech_.on('keystatuschange', e => {
- this.playlistController_.updatePlaylistByKeyStatus(e.keyId, e.status);
- });
- this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);
- this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);
- if (!didSetupEmeOptions) {
- // If EME options were not set up, we've done all we could to initialize EME.
- this.playlistController_.sourceUpdater_.initializedEme();
- return;
- }
- this.createKeySessions_();
- }
- /**
- * Initializes the quality levels and sets listeners to update them.
- *
- * @method setupQualityLevels_
- * @private
- */
-
- setupQualityLevels_() {
- const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin
- // or qualityLevels_ listeners have already been setup, do nothing.
-
- if (!player || !player.qualityLevels || this.qualityLevels_) {
- return;
- }
- this.qualityLevels_ = player.qualityLevels();
- this.playlistController_.on('selectedinitialmedia', () => {
- handleVhsLoadedMetadata(this.qualityLevels_, this);
- });
- this.playlists.on('mediachange', () => {
- handleVhsMediaChange(this.qualityLevels_, this.playlists);
- });
- }
- /**
- * return the version
- */
-
- static version() {
- return {
- '@videojs/http-streaming': version$4,
- 'mux.js': version$3,
- 'mpd-parser': version$2,
- 'm3u8-parser': version$1,
- 'aes-decrypter': version
- };
- }
- /**
- * return the version
- */
-
- version() {
- return this.constructor.version();
- }
- canChangeType() {
- return SourceUpdater.canChangeType();
- }
- /**
- * Begin playing the video.
- */
-
- play() {
- this.playlistController_.play();
- }
- /**
- * a wrapper around the function in PlaylistController
- */
-
- setCurrentTime(currentTime) {
- this.playlistController_.setCurrentTime(currentTime);
- }
- /**
- * a wrapper around the function in PlaylistController
- */
-
- duration() {
- return this.playlistController_.duration();
- }
- /**
- * a wrapper around the function in PlaylistController
- */
-
- seekable() {
- return this.playlistController_.seekable();
- }
- /**
- * Abort all outstanding work and cleanup.
- */
-
- dispose() {
- if (this.playbackWatcher_) {
- this.playbackWatcher_.dispose();
- }
- if (this.playlistController_) {
- this.playlistController_.dispose();
- }
- if (this.qualityLevels_) {
- this.qualityLevels_.dispose();
- }
- if (this.tech_ && this.tech_.vhs) {
- delete this.tech_.vhs;
- }
- if (this.mediaSourceUrl_ && window.URL.revokeObjectURL) {
- window.URL.revokeObjectURL(this.mediaSourceUrl_);
- this.mediaSourceUrl_ = null;
- }
- if (this.tech_) {
- this.tech_.off('waitingforkey', this.handleWaitingForKey_);
- }
- super.dispose();
- }
- convertToProgramTime(time, callback) {
- return getProgramTime({
- playlist: this.playlistController_.media(),
- time,
- callback
- });
- } // the player must be playing before calling this
-
- seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {
- return seekToProgramTime({
- programTime,
- playlist: this.playlistController_.media(),
- retryCount,
- pauseAfterSeek,
- seekTo: this.options_.seekTo,
- tech: this.options_.tech,
- callback
- });
- }
- /**
- * Adds the onRequest, onResponse, offRequest and offResponse functions
- * to the VhsHandler xhr Object.
- */
-
- setupXhrHooks_() {
- /**
- * A player function for setting an onRequest hook
- *
- * @param {function} callback for request modifiction
- */
- this.xhr.onRequest = callback => {
- addOnRequestHook(this.xhr, callback);
- };
- /**
- * A player function for setting an onResponse hook
- *
- * @param {callback} callback for response data retrieval
- */
-
- this.xhr.onResponse = callback => {
- addOnResponseHook(this.xhr, callback);
- };
- /**
- * Deletes a player onRequest callback if it exists
- *
- * @param {function} callback to delete from the player set
- */
-
- this.xhr.offRequest = callback => {
- removeOnRequestHook(this.xhr, callback);
- };
- /**
- * Deletes a player onResponse callback if it exists
- *
- * @param {function} callback to delete from the player set
- */
-
- this.xhr.offResponse = callback => {
- removeOnResponseHook(this.xhr, callback);
- }; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.
- // This allows hooks to be set before the source is set to vhs when handleSource is called.
-
- this.player_.trigger('xhr-hooks-ready');
- }
- }
- /**
- * The Source Handler object, which informs video.js what additional
- * MIME types are supported and sets up playback. It is registered
- * automatically to the appropriate tech based on the capabilities of
- * the browser it is running in. It is not necessary to use or modify
- * this object in normal usage.
- */
-
- const VhsSourceHandler = {
- name: 'videojs-http-streaming',
- VERSION: version$4,
- canHandleSource(srcObj, options = {}) {
- const localOptions = merge(videojs.options, options);
- return VhsSourceHandler.canPlayType(srcObj.type, localOptions);
- },
- handleSource(source, tech, options = {}) {
- const localOptions = merge(videojs.options, options);
- tech.vhs = new VhsHandler(source, tech, localOptions);
- tech.vhs.xhr = xhrFactory();
- tech.vhs.setupXhrHooks_();
- tech.vhs.src(source.src, source.type);
- return tech.vhs;
- },
- canPlayType(type, options) {
- const simpleType = simpleTypeFromSourceType(type);
- if (!simpleType) {
- return '';
- }
- const overrideNative = VhsSourceHandler.getOverrideNative(options);
- const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);
- const canUseMsePlayback = !supportsTypeNatively || overrideNative;
- return canUseMsePlayback ? 'maybe' : '';
- },
- getOverrideNative(options = {}) {
- const {
- vhs = {}
- } = options;
- const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);
- const {
- overrideNative = defaultOverrideNative
- } = vhs;
- return overrideNative;
- }
- };
- /**
- * Check to see if the native MediaSource object exists and supports
- * an MP4 container with both H.264 video and AAC-LC audio.
- *
- * @return {boolean} if native media sources are supported
- */
-
- const supportsNativeMediaSources = () => {
- return browserSupportsCodec('avc1.4d400d,mp4a.40.2');
- }; // register source handlers with the appropriate techs
-
- if (supportsNativeMediaSources()) {
- videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);
- }
- videojs.VhsHandler = VhsHandler;
- videojs.VhsSourceHandler = VhsSourceHandler;
- videojs.Vhs = Vhs;
- if (!videojs.use) {
- videojs.registerComponent('Vhs', Vhs);
- }
- videojs.options.vhs = videojs.options.vhs || {};
- if (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {
- videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError);
- }
-
- return videojs;
-
-}));
generated by cgit v1.2.3-57-g22cb (git 2.39.0) at 2024-11-22 20:44:27 +0000