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Diffstat (limited to 'priv/static/video.js/video.es.js')
| -rw-r--r-- | priv/static/video.js/video.es.js | 52506 |
1 files changed, 0 insertions, 52506 deletions
diff --git a/priv/static/video.js/video.es.js b/priv/static/video.js/video.es.js deleted file mode 100644 index 2cc0305..0000000 --- a/priv/static/video.js/video.es.js +++ /dev/null @@ -1,52506 +0,0 @@ -/** - * @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> - */ - -import window$1 from 'global/window'; -import document from 'global/document'; -import keycode from 'keycode'; -import safeParseTuple from 'safe-json-parse/tuple'; -import XHR from '@videojs/xhr'; -import vtt from 'videojs-vtt.js'; -import _extends from '@babel/runtime/helpers/extends'; -import _resolveUrl from '@videojs/vhs-utils/es/resolve-url.js'; -import { Parser } from 'm3u8-parser'; -import { DEFAULT_VIDEO_CODEC, DEFAULT_AUDIO_CODEC, parseCodecs, muxerSupportsCodec, browserSupportsCodec, translateLegacyCodec, codecsFromDefault, isAudioCodec, getMimeForCodec } from '@videojs/vhs-utils/es/codecs.js'; -import { simpleTypeFromSourceType } from '@videojs/vhs-utils/es/media-types.js'; -import { isArrayBufferView, concatTypedArrays, stringToBytes, toUint8 } from '@videojs/vhs-utils/es/byte-helpers'; -import { generateSidxKey, parseUTCTiming, parse, addSidxSegmentsToPlaylist } from 'mpd-parser'; -import parseSidx from 'mux.js/lib/tools/parse-sidx'; -import { getId3Offset } from '@videojs/vhs-utils/es/id3-helpers'; -import { detectContainerForBytes, isLikelyFmp4MediaSegment } from '@videojs/vhs-utils/es/containers'; -import { ONE_SECOND_IN_TS } from 'mux.js/lib/utils/clock'; - -var version$6 = "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$1.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$1.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$1.console.info || window$1.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$1.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 = 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(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(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(value) && toString.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$1(...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$1(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(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, - isPlain: isPlain, - merge: merge$1, - values: values, - 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$1 || window$1.navigator.maxTouchPoints || window$1.DocumentTouch && window$1.document instanceof window$1.DocumentTouch)); -const UAD = window$1.navigator && window$1.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$1.navigator && window$1.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$1.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(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$1.parent !== window$1.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(value) { - return isObject(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(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$1.getComputedStyle === 'function') { - let computedStyleValue; - try { - computedStyleValue = window$1.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, - 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$1.setTimeout(autoSetup, wait); -} - -/** - * Used to set the internal tracking of window loaded state to true. - * - * @private - */ -function setWindowLoaded() { - _windowLoaded = true; - window$1.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$1.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$1.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$1.addEventListener('test', null, opts); - window$1.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$1.performance.now(); - const throttled = function (...args) { - const now = window$1.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$1) { - 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$1.clearTimeout(oldTimeout); - const timeout = window$1.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$1.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 -}); - -/** - * 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$1({}, this.options_); - - // Updated options with supplied options - options = this.options_ = merge$1(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$1(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$1.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$1.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$1.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$1.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$1.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$1.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$1.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$1.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$1.Symbol && window$1.Symbol.iterator) { - timeRangesObj[window$1.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(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; - -/** - * 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$1.HTMLAnchorElement || child instanceof window$1.HTMLAreaElement) && child.hasAttribute('href') || (child instanceof window$1.HTMLInputElement || child instanceof window$1.HTMLSelectElement || child instanceof window$1.HTMLTextAreaElement || child instanceof window$1.HTMLButtonElement) && !child.hasAttribute('disabled') || child instanceof window$1.HTMLIFrameElement || child instanceof window$1.HTMLObjectElement || child instanceof window$1.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$1.location.protocol; - } - - /* istanbul ignore if */ - if (!details.host) { - details.host = window$1.location.host; - } - return details; -}; - -/** - * Get absolute version of relative URL. - * - * @function - * @param {string} url - * URL to make absolute - * - * @return {string} - * Absolute URL - * - * @see http://stackoverflow.com/questions/470832/getting-an-absolute-url-from-a-relative-one-ie6-issue - */ -const getAbsoluteURL = function (url) { - // Check if absolute URL - if (!url.match(/^https?:\/\//)) { - // Add the url to an anchor and let the browser parse it to convert to an absolute url - const a = document.createElement('a'); - a.href = url; - url = a.href; - } - return url; -}; - -/** - * Returns the extension of the passed file name. It will return an empty string - * if passed an invalid path. - * - * @function - * @param {string} path - * The fileName path like '/path/to/file.mp4' - * - * @return {string} - * The extension in lower case or an empty string if no - * extension could be found. - */ -const getFileExtension = function (path) { - if (typeof path === 'string') { - const splitPathRe = /^(\/?)([\s\S]*?)((?:\.{1,2}|[^\/]+?)(\.([^\.\/\?]+)))(?:[\/]*|[\?].*)$/; - 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$1.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 -}); - -/** - * @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$1.WebVTT.Parser(window$1, window$1.vttjs, window$1.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$1.console && window$1.console.groupCollapsed) { - window$1.console.groupCollapsed(`Text Track parsing errors for ${track.src}`); - } - errors.forEach(error => log$1.error(error)); - if (window$1.console && window$1.console.groupEnd) { - window$1.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; - } - XHR(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$1.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$1(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$1.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$1(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$1(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); - -/** - * @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$1.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$1.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$1(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$1 && window$1.videojs && window$1.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$1.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(srcobj)) { - newsrc.push(srcobj); - } - }); - src = newsrc; - } else if (typeof src === 'string' && src.trim()) { - // convert string into object - src = [fixSource({ - src - })]; - } else if (isObject(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 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- 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$1.screen.orientation || window$1; - const changeOrientationEvent = window$1.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$1.WebVTT === 'function') { - window$1.WebVTT.processCues(window$1, [], 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$1.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$1.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$1.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$1.WebVTT.processCues(window$1, 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$1) { - 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$1.Event !== 'object') { - // Android 2.3 throws an Illegal Constructor error for window.Event - try { - event = new window$1.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$1.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$1.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values)); - } else { - window$1.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$1.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$1({ - createEl: !RESIZE_OBSERVER_AVAILABLE, - reportTouchActivity: false - }, options); - super(player, options_); - this.ResizeObserver = options.ResizeObserver || window$1.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$1(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$1.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(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$1.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$1.HTMLMediaElement.prototype, window$1.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$1(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$1.Element.prototype.getAttribute.call(this, 'src')); - } - return ''; - }, - set(v) { - window$1.Element.prototype.setAttribute.call(this, 'src', v); - return v; - } -}); -const getSrcDescriptor = tech => getDescriptor([tech.el(), window$1.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$1(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$1({}, 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$1.performance) { - videoPlaybackQuality.creationTime = window$1.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$1.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$1(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$1.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$6.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$1.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$1.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$6 - }; - } - - /** - * 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$1({}, 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$1.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$1.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$1.documentPictureInPicture && window$1.documentPictureInPicture.window) { - // With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler - window$1.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(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$1(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$1(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$1(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$1(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$1(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] = safeParseTuple(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$1.navigator; - -/* - * Player instance options, surfaced using options - * options = Player.prototype.options_ - * Make changes in options, not here. - * - * @type {Object} - * @private - */ -Player.prototype.options_ = { - // Default order of fallback technology - techOrder: Tech.defaultTechOrder_, - html5: {}, - // enable sourceset by default - enableSourceset: true, - // default inactivity timeout - inactivityTimeout: 2000, - // default playback rates - playbackRates: [], - // Add playback rate selection by adding rates - // 'playbackRates': [0.5, 1, 1.5, 2], - liveui: false, - // Included control sets - children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'], - language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en', - // locales and their language translations - languages: {}, - // Default message to show when a video cannot be played. - notSupportedMessage: 'No compatible source was found for this media.', - normalizeAutoplay: false, - fullscreen: { - options: { - navigationUI: 'hide' - } - }, - breakpoints: {}, - responsive: false, - audioOnlyMode: false, - audioPosterMode: false, - // Default smooth seeking to false - enableSmoothSeeking: false -}; -TECH_EVENTS_RETRIGGER.forEach(function (event) { - Player.prototype[`handleTech${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$1.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$1(options)); - if (!isObject(opts) || Array.isArray(opts)) { - log$1.error('please return an object in beforesetup hooks'); - return; - } - options = merge$1(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$1.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$6; - -/** - * 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$1); - -/** - * 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$1(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 = XHR; -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; - -/*! @name videojs-contrib-quality-levels @version 4.1.0 @license Apache-2.0 */ - -/** - * 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.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$5 = "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$1 = 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$5; - 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$1(this, videojs.obj.merge({}, options)); -}; - -// Register the plugin with video.js. -videojs.registerPlugin('qualityLevels', qualityLevels); - -// Include the version number. -qualityLevels.VERSION = version$5; - -/*! @name @videojs/http-streaming @version 3.12.1 @license Apache-2.0 */ - -/** - * @file resolve-url.js - Handling how URLs are resolved and manipulated - */ -const resolveUrl = _resolveUrl; -/** - * If the xhr request was redirected, return the responseURL, otherwise, - * return the original url. - * - * @api private - * - * @param {string} url - an url being requested - * @param {XMLHttpRequest} req - xhr request result - * - * @return {string} - */ - -const resolveManifestRedirect = (url, req) => { - // To understand how the responseURL below is set and generated: - // - https://fetch.spec.whatwg.org/#concept-response-url - // - https://fetch.spec.whatwg.org/#atomic-http-redirect-handling - if (req && req.responseURL && url !== req.responseURL) { - return req.responseURL; - } - return url; -}; -const logger = source => { - if (videojs.log.debug) { - return videojs.log.debug.bind(videojs, 'VHS:', `${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$1.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$1.location.href, - resolvedUri: window$1.location.href, - playlists: [{ - uri, - id, - resolvedUri: uri, - // m3u8-parser does not attach an attributes property to media playlists so make - // sure that the property is attached to avoid undefined reference errors - attributes: {} - }] - }; // set up ID reference - - main.playlists[id] = main.playlists[0]; // URI reference added for backwards compatibility - - main.playlists[uri] = main.playlists[0]; - return main; -}; -/** - * Does an in-place update of the main manifest to add updated playlist URI references - * as well as other properties needed by VHS that aren't included by the parser. - * - * @param {Object} main - * main manifest object - * @param {string} uri - * The source URI - * @param {function} createGroupID - * A function to determine how to create the groupID for mediaGroups - */ - -const addPropertiesToMain = (main, uri, createGroupID = groupID) => { - main.uri = uri; - for (let i = 0; i < main.playlists.length; i++) { - if (!main.playlists[i].uri) { - // Set up phony URIs for the playlists since playlists are referenced by their URIs - // throughout VHS, but some formats (e.g., DASH) don't have external URIs - // TODO: consider adding dummy URIs in mpd-parser - const phonyUri = `placeholder-uri-${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({}, 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$1.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$1.clearTimeout(this.mediaUpdateTimeout); - window$1.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$1.clearTimeout(this.finalRenditionTimeout); - if (shouldDelay) { - const delay = (playlist.partTargetDuration || playlist.targetDuration) / 2 * 1000 || 5 * 1000; - this.finalRenditionTimeout = window$1.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$1.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$1.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$1.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$1.clearTimeout(this.mediaUpdateTimeout); - this.mediaUpdateTimeout = null; - } // we only have use mediaupdatetimeout for live playlists. - - if (!this.media() || this.media().endList) { - return; - } - this.mediaUpdateTimeout = window$1.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$1.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$1.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({}, 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$1.BigInt(byterange.offset) + window$1.BigInt(byterange.length) - window$1.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(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$1.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(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(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$1.clearTimeout(this.minimumUpdatePeriodTimeout_); - window$1.clearTimeout(this.mediaRequest_); - window$1.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$1.clearTimeout(this.mediaUpdateTimeout); - this.mediaUpdateTimeout = null; - if (this.isMain_) { - window$1.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$1.clearTimeout(this.mediaUpdateTimeout); - this.mediaUpdateTimeout = null; - const media = this.media(); - if (isFinalRendition) { - const delay = media ? media.targetDuration / 2 * 1000 : 5 * 1000; - this.mediaUpdateTimeout = window$1.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$1.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$1.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$1.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$1.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, - //  - 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, - // à - 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({}, 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$1.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$1.Number.MAX_VALUE; - if (right.attributes.BANDWIDTH) { - rightBandwidth = right.attributes.BANDWIDTH; - } - rightBandwidth = rightBandwidth || window$1.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$1.Number.MAX_VALUE; - if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) { - rightWidth = right.attributes.RESOLUTION.width; - } - rightWidth = rightWidth || window$1.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$1.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$1.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$1.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$1.WebKitDataCue || window$1.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$1.WebKitDataCue || window$1.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$1.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$1.WebKitDataCue || window$1.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) * ONE_SECOND_IN_TS); - 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) * ONE_SECOND_IN_TS); - const endPts = Math.ceil((end - mapping) * ONE_SECOND_IN_TS); - 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$1.BigInt(end) - window$1.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$1.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$1.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$1.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$1.clearTimeout(this.checkBufferTimeout_); - } - this.checkBufferTimeout_ = window$1.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$1.clearTimeout(this.checkBufferTimeout_); - } - this.checkBufferTimeout_ = window$1.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$1.setTimeout(() => { - this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue'); - this.quotaExceededErrorRetryTimeout_ = null; - this.processCallQueue_(); - }, MIN_BACK_BUFFER * 1000); - }, true); - } - handleAppendError_({ - segmentInfo, - type, - bytes - }, error) { - // if there's no error, nothing to do - if (!error) { - return; - } - if (error.code === QUOTA_EXCEEDED_ERR) { - this.handleQuotaExceededError_({ - segmentInfo, - type, - bytes - }); // A quota exceeded error should be recoverable with a future re-append, so no need - // to trigger an append error. - - return; - } - this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error); // If an append errors, we often can't recover. - // (see https://w3c.github.io/media-source/#sourcebuffer-append-error). - // - // Trigger a special error so that it can be handled separately from normal, - // recoverable errors. - - this.error({ - message: `${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({}, segmentInfo, { - forceTimestampOffset: true - }); - _extends(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$1.WebKitDataCue || window$1.VTTCue; - const value = { - custom: segment.custom, - dateTimeObject: segment.dateTimeObject, - dateTimeString: segment.dateTimeString, - programDateTime: segment.programDateTime, - bandwidth: segmentInfo.playlist.attributes.BANDWIDTH, - resolution: segmentInfo.playlist.attributes.RESOLUTION, - codecs: segmentInfo.playlist.attributes.CODECS, - byteLength: segmentInfo.byteLength, - uri: segmentInfo.uri, - timeline: segmentInfo.timeline, - playlist: segmentInfo.playlist.id, - start, - end - }; - const data = JSON.stringify(value); - const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between - // the differences of WebKitDataCue in safari and VTTCue in other browsers - - cue.value = value; - this.segmentMetadataTrack_.addCue(cue); - } -} -function noop() {} -const toTitleCase = function (string) { - if (typeof string !== 'string') { - return string; - } - return string.replace(/./, w => w.toUpperCase()); -}; - -/** - * @file source-updater.js - */ -const bufferTypes = ['video', 'audio']; -const updating = (type, sourceUpdater) => { - const sourceBuffer = sourceUpdater[`${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$1.MediaSource && window$1.MediaSource.prototype && typeof window$1.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$1.SourceBuffer && window$1.SourceBuffer.prototype && typeof window$1.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$1.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$1.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$1.WebVTT !== 'function') { - // caller is responsible for exception handling. - throw new NoVttJsError(); - } - if (typeof window$1.TextDecoder === 'function') { - decoder = new window$1.TextDecoder('utf8'); - } else { - decoder = window$1.WebVTT.StringDecoder(); - decodeBytesToString = true; - } - const parser = new window$1.WebVTT.Parser(window$1, window$1.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 / ONE_SECOND_IN_TS; - 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 * ONE_SECOND_IN_TS; - const referenceIn90khz = reference * ONE_SECOND_IN_TS; - 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 / ONE_SECOND_IN_TS; - } -} - -/** - * @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$1.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$1.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$1.URL(steeringUrl); - const proxyServerUrlObject = new window$1.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$1.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$1.URL(url); - const path = this.getPathway(); - const networkThroughput = this.getBandwidth_(); - if (path) { - const pathwayKey = `_${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$1.setTimeout(() => { - this.requestSteeringManifest(); - }, ttlMS); - } - /** - * Clear the TTL timeout if necessary. - */ - - clearTTLTimeout_() { - window$1.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$1.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$1.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$1.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$1.clearTimeout(this.checkCurrentTimeTimeout_); - } - this.resetTimeUpdate_(); - }; - } - /** - * Periodically check current time to see if playback stopped - * - * @private - */ - - monitorCurrentTime_() { - this.checkCurrentTime_(); - if (this.checkCurrentTimeTimeout_) { - window$1.clearTimeout(this.checkCurrentTimeTimeout_); - } // 42 = 24 fps // 250 is what Webkit uses // FF uses 15 - - this.checkCurrentTimeTimeout_ = window$1.setTimeout(this.monitorCurrentTime_.bind(this), 250); - } - /** - * Reset stalled download stats for a specific type of loader - * - * @param {string} type - * The segment loader type to check. - * - * @listens SegmentLoader#playlistupdate - * @listens Tech#seeking - * @listens Tech#seeked - */ - - resetSegmentDownloads_(type) { - const loader = this.playlistController_[`${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$1.localStorage) { - return null; - } - const storedObject = window$1.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$1.localStorage) { - return false; - } - let objectToStore = getVhsLocalStorage(); - objectToStore = objectToStore ? merge(objectToStore, options) : options; - try { - window$1.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$1.navigator.connection || window$1.navigator.mozConnection || window$1.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$1.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$1.URL.revokeObjectURL) { - window$1.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); -} - -export { videojs as default }; |