|
- /**
- * videojs-contrib-hls
- * @version 5.5.0
- * @copyright 2017 Brightcove, Inc
- * @license Apache-2.0
- */
- (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.videojsContribHls = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
- /**
- * @file ad-cue-tags.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- /**
- * Searches for an ad cue that overlaps with the given mediaTime
- */
- var findAdCue = function findAdCue(track, mediaTime) {
- var cues = track.cues;
-
- for (var i = 0; i < cues.length; i++) {
- var cue = cues[i];
-
- if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {
- return cue;
- }
- }
- return null;
- };
-
- var updateAdCues = function updateAdCues(media, track) {
- var offset = arguments.length <= 2 || arguments[2] === undefined ? 0 : arguments[2];
-
- if (!media.segments) {
- return;
- }
-
- var mediaTime = offset;
- var cue = undefined;
-
- for (var i = 0; i < media.segments.length; i++) {
- var 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 _globalWindow2['default'].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
- var adOffset = undefined;
- var adTotal = undefined;
-
- // Assumes tag formate to be
- // #EXT-X-CUE-OUT-CONT:10/30
-
- var _segment$cueOutCont$split$map = segment.cueOutCont.split('/').map(parseFloat);
-
- var _segment$cueOutCont$split$map2 = _slicedToArray(_segment$cueOutCont$split$map, 2);
-
- adOffset = _segment$cueOutCont$split$map2[0];
- adTotal = _segment$cueOutCont$split$map2[1];
-
- cue = new _globalWindow2['default'].VTTCue(mediaTime, mediaTime + segment.duration, '');
- cue.adStartTime = mediaTime - adOffset;
- cue.adEndTime = cue.adStartTime + adTotal;
- track.addCue(cue);
- }
- }
- mediaTime += segment.duration;
- }
- };
-
- exports['default'] = {
- updateAdCues: updateAdCues,
- findAdCue: findAdCue
- };
- module.exports = exports['default'];
- },{"global/window":30}],2:[function(require,module,exports){
- /**
- * @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
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- var textRange = function textRange(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
- */
- var formatHexString = function formatHexString(e, i) {
- var value = e.toString(16);
-
- return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');
- };
- var formatAsciiString = function formatAsciiString(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
- */
- var createTransferableMessage = function createTransferableMessage(message) {
- var transferable = {};
-
- Object.keys(message).forEach(function (key) {
- var value = message[key];
-
- if (ArrayBuffer.isView(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.
- */
- var initSegmentId = function initSegmentId(initSegment) {
- var byterange = initSegment.byterange || {
- length: Infinity,
- offset: 0
- };
-
- return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');
- };
-
- /**
- * utils to help dump binary data to the console
- */
- var utils = {
- hexDump: function hexDump(data) {
- var bytes = Array.prototype.slice.call(data);
- var step = 16;
- var result = '';
- var hex = undefined;
- var ascii = undefined;
-
- for (var 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;
- },
- tagDump: function tagDump(tag) {
- return utils.hexDump(tag.bytes);
- },
- textRanges: function textRanges(ranges) {
- var result = '';
- var i = undefined;
-
- for (i = 0; i < ranges.length; i++) {
- result += textRange(ranges, i) + ' ';
- }
- return result;
- },
- createTransferableMessage: createTransferableMessage,
- initSegmentId: initSegmentId
- };
-
- exports['default'] = utils;
- module.exports = exports['default'];
- },{}],3:[function(require,module,exports){
- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports["default"] = {
- GOAL_BUFFER_LENGTH: 30
- };
- module.exports = exports["default"];
- },{}],4:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _aesDecrypter = require('aes-decrypter');
-
- var _binUtils = require('./bin-utils');
-
- /**
- * 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.
- *
- * @param {Object} self
- * the scope for the web worker
- */
- var DecrypterWorker = function DecrypterWorker(self) {
- self.onmessage = function (event) {
- var data = event.data;
- var encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);
- var key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);
- var iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);
-
- /* eslint-disable no-new, handle-callback-err */
- new _aesDecrypter.Decrypter(encrypted, key, iv, function (err, bytes) {
- _globalWindow2['default'].postMessage((0, _binUtils.createTransferableMessage)({
- source: data.source,
- decrypted: bytes
- }), [bytes.buffer]);
- });
- /* eslint-enable */
- };
- };
-
- exports['default'] = function (self) {
- return new DecrypterWorker(self);
- };
-
- module.exports = exports['default'];
- },{"./bin-utils":2,"aes-decrypter":23,"global/window":30}],5:[function(require,module,exports){
- (function (global){
- /**
- * @file master-playlist-controller.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x2, _x3, _x4) { var _again = true; _function: while (_again) { var object = _x2, property = _x3, receiver = _x4; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x2 = parent; _x3 = property; _x4 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _playlistLoader = require('./playlist-loader');
-
- var _playlistLoader2 = _interopRequireDefault(_playlistLoader);
-
- var _segmentLoader = require('./segment-loader');
-
- var _segmentLoader2 = _interopRequireDefault(_segmentLoader);
-
- var _vttSegmentLoader = require('./vtt-segment-loader');
-
- var _vttSegmentLoader2 = _interopRequireDefault(_vttSegmentLoader);
-
- var _ranges = require('./ranges');
-
- var _ranges2 = _interopRequireDefault(_ranges);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _adCueTags = require('./ad-cue-tags');
-
- var _adCueTags2 = _interopRequireDefault(_adCueTags);
-
- var _syncController = require('./sync-controller');
-
- var _syncController2 = _interopRequireDefault(_syncController);
-
- var _videojsContribMediaSourcesEs5CodecUtils = require('videojs-contrib-media-sources/es5/codec-utils');
-
- var _webworkify = require('webworkify');
-
- var _webworkify2 = _interopRequireDefault(_webworkify);
-
- var _decrypterWorker = require('./decrypter-worker');
-
- var _decrypterWorker2 = _interopRequireDefault(_decrypterWorker);
-
- var Hls = undefined;
-
- // SegmentLoader stats that need to have each loader's
- // values summed to calculate the final value
- var loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred'];
- var sumLoaderStat = function sumLoaderStat(stat) {
- return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];
- };
-
- /**
- * determine if an object a is differnt from
- * and object b. both only having one dimensional
- * properties
- *
- * @param {Object} a object one
- * @param {Object} b object two
- * @return {Boolean} if the object has changed or not
- */
- var objectChanged = function objectChanged(a, b) {
- if (typeof a !== typeof b) {
- return true;
- }
- // if we have a different number of elements
- // something has changed
- if (Object.keys(a).length !== Object.keys(b).length) {
- return true;
- }
-
- for (var prop in a) {
- if (a[prop] !== b[prop]) {
- return true;
- }
- }
- return false;
- };
-
- /**
- * Parses a codec string to retrieve the number of codecs specified,
- * the video codec and object type indicator, and the audio profile.
- *
- * @private
- */
- var parseCodecs = function parseCodecs(codecs) {
- var result = {
- codecCount: 0,
- videoCodec: null,
- videoObjectTypeIndicator: null,
- audioProfile: null
- };
- var parsed = undefined;
-
- result.codecCount = codecs.split(',').length;
- result.codecCount = result.codecCount || 2;
-
- // parse the video codec
- parsed = /(^|\s|,)+(avc1)([^ ,]*)/i.exec(codecs);
- if (parsed) {
- result.videoCodec = parsed[2];
- result.videoObjectTypeIndicator = parsed[3];
- }
-
- // parse the last field of the audio codec
- result.audioProfile = /(^|\s|,)+mp4a.[0-9A-Fa-f]+\.([0-9A-Fa-f]+)/i.exec(codecs);
- result.audioProfile = result.audioProfile && result.audioProfile[2];
-
- return result;
- };
-
- /**
- * Replace codecs in the codec string with the old apple-style `avc1.<dd>.<dd>` to the
- * standard `avc1.<hhhhhh>`.
- *
- * @param codecString {String} the codec string
- * @return {String} the codec string with old apple-style codecs replaced
- *
- * @private
- */
- var mapLegacyAvcCodecs_ = function mapLegacyAvcCodecs_(codecString) {
- return codecString.replace(/avc1\.(\d+)\.(\d+)/i, function (match) {
- return (0, _videojsContribMediaSourcesEs5CodecUtils.translateLegacyCodecs)([match])[0];
- });
- };
-
- exports.mapLegacyAvcCodecs_ = mapLegacyAvcCodecs_;
- /**
- * Calculates the MIME type strings for a working configuration of
- * SourceBuffers to play variant streams in a master playlist. If
- * there is no possible working configuration, an empty array will be
- * returned.
- *
- * @param master {Object} the m3u8 object for the master playlist
- * @param media {Object} the m3u8 object for the variant playlist
- * @return {Array} the MIME type strings. If the array has more than
- * one entry, the first element should be applied to the video
- * SourceBuffer and the second to the audio SourceBuffer.
- *
- * @private
- */
- var mimeTypesForPlaylist_ = function mimeTypesForPlaylist_(master, media) {
- var container = 'mp2t';
- var codecs = {
- videoCodec: 'avc1',
- videoObjectTypeIndicator: '.4d400d',
- audioProfile: '2'
- };
- var audioGroup = [];
- var mediaAttributes = undefined;
- var previousGroup = null;
-
- if (!media) {
- // not enough information, return an error
- return [];
- }
- // An initialization segment means the media playlists is an iframe
- // playlist or is using the mp4 container. We don't currently
- // support iframe playlists, so assume this is signalling mp4
- // fragments.
- // the existence check for segments can be removed once
- // https://github.com/videojs/m3u8-parser/issues/8 is closed
- if (media.segments && media.segments.length && media.segments[0].map) {
- container = 'mp4';
- }
-
- // if the codecs were explicitly specified, use them instead of the
- // defaults
- mediaAttributes = media.attributes || {};
- if (mediaAttributes.CODECS) {
- (function () {
- var parsedCodecs = parseCodecs(mediaAttributes.CODECS);
-
- Object.keys(parsedCodecs).forEach(function (key) {
- codecs[key] = parsedCodecs[key] || codecs[key];
- });
- })();
- }
-
- if (master.mediaGroups.AUDIO) {
- audioGroup = master.mediaGroups.AUDIO[mediaAttributes.AUDIO];
- }
-
- // if audio could be muxed or unmuxed, use mime types appropriate
- // for both scenarios
- for (var groupId in audioGroup) {
- if (previousGroup && !!audioGroup[groupId].uri !== !!previousGroup.uri) {
- // one source buffer with muxed video and audio and another for
- // the alternate audio
- return ['video/' + container + '; codecs="' + codecs.videoCodec + codecs.videoObjectTypeIndicator + ', mp4a.40.' + codecs.audioProfile + '"', 'audio/' + container + '; codecs="mp4a.40.' + codecs.audioProfile + '"'];
- }
- previousGroup = audioGroup[groupId];
- }
- // if all video and audio is unmuxed, use two single-codec mime
- // types
- if (previousGroup && previousGroup.uri) {
- return ['video/' + container + '; codecs="' + codecs.videoCodec + codecs.videoObjectTypeIndicator + '"', 'audio/' + container + '; codecs="mp4a.40.' + codecs.audioProfile + '"'];
- }
-
- // all video and audio are muxed, use a dual-codec mime type
- return ['video/' + container + '; codecs="' + codecs.videoCodec + codecs.videoObjectTypeIndicator + ', mp4a.40.' + codecs.audioProfile + '"'];
- };
-
- exports.mimeTypesForPlaylist_ = mimeTypesForPlaylist_;
- /**
- * the master playlist controller controller all interactons
- * between playlists and segmentloaders. At this time this mainly
- * involves a master playlist and a series of audio playlists
- * if they are available
- *
- * @class MasterPlaylistController
- * @extends videojs.EventTarget
- */
-
- var MasterPlaylistController = (function (_videojs$EventTarget) {
- _inherits(MasterPlaylistController, _videojs$EventTarget);
-
- function MasterPlaylistController(options) {
- var _this = this;
-
- _classCallCheck(this, MasterPlaylistController);
-
- _get(Object.getPrototypeOf(MasterPlaylistController.prototype), 'constructor', this).call(this);
-
- var url = options.url;
- var withCredentials = options.withCredentials;
- var mode = options.mode;
- var tech = options.tech;
- var bandwidth = options.bandwidth;
- var externHls = options.externHls;
- var useCueTags = options.useCueTags;
- var blacklistDuration = options.blacklistDuration;
-
- if (!url) {
- throw new Error('A non-empty playlist URL is required');
- }
-
- Hls = externHls;
-
- this.withCredentials = withCredentials;
- this.tech_ = tech;
- this.hls_ = tech.hls;
- this.mode_ = mode;
- this.useCueTags_ = useCueTags;
- this.blacklistDuration = blacklistDuration;
- if (this.useCueTags_) {
- this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');
- this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';
- }
-
- this.requestOptions_ = {
- withCredentials: this.withCredentials,
- timeout: null
- };
-
- this.audioGroups_ = {};
- this.subtitleGroups_ = { groups: {}, tracks: {} };
-
- this.mediaSource = new _videoJs2['default'].MediaSource({ mode: mode });
- this.audioinfo_ = null;
- this.mediaSource.on('audioinfo', this.handleAudioinfoUpdate_.bind(this));
-
- // load the media source into the player
- this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_.bind(this));
-
- this.seekable_ = _videoJs2['default'].createTimeRanges();
- this.hasPlayed_ = function () {
- return false;
- };
-
- this.syncController_ = new _syncController2['default']();
- this.segmentMetadataTrack_ = tech.addRemoteTextTrack({
- kind: 'metadata',
- label: 'segment-metadata'
- }, true).track;
-
- this.decrypter_ = (0, _webworkify2['default'])(_decrypterWorker2['default']);
-
- var segmentLoaderOptions = {
- hls: this.hls_,
- mediaSource: this.mediaSource,
- currentTime: this.tech_.currentTime.bind(this.tech_),
- seekable: function seekable() {
- return _this.seekable();
- },
- seeking: function seeking() {
- return _this.tech_.seeking();
- },
- duration: function duration() {
- return _this.mediaSource.duration;
- },
- hasPlayed: function hasPlayed() {
- return _this.hasPlayed_();
- },
- bandwidth: bandwidth,
- syncController: this.syncController_,
- decrypter: this.decrypter_
- };
-
- // setup playlist loaders
- this.masterPlaylistLoader_ = new _playlistLoader2['default'](url, this.hls_, this.withCredentials);
- this.setupMasterPlaylistLoaderListeners_();
- this.audioPlaylistLoader_ = null;
- this.subtitlePlaylistLoader_ = null;
-
- // setup segment loaders
- // combined audio/video or just video when alternate audio track is selected
- this.mainSegmentLoader_ = new _segmentLoader2['default'](_videoJs2['default'].mergeOptions(segmentLoaderOptions, {
- segmentMetadataTrack: this.segmentMetadataTrack_,
- loaderType: 'main'
- }));
-
- // alternate audio track
- this.audioSegmentLoader_ = new _segmentLoader2['default'](_videoJs2['default'].mergeOptions(segmentLoaderOptions, {
- loaderType: 'audio'
- }));
-
- this.subtitleSegmentLoader_ = new _vttSegmentLoader2['default'](_videoJs2['default'].mergeOptions(segmentLoaderOptions, {
- loaderType: 'vtt'
- }));
-
- this.setupSegmentLoaderListeners_();
-
- // Create SegmentLoader stat-getters
- loaderStats.forEach(function (stat) {
- _this[stat + '_'] = sumLoaderStat.bind(_this, stat);
- });
-
- this.masterPlaylistLoader_.load();
- }
-
- /**
- * Register event handlers on the master playlist loader. A helper
- * function for construction time.
- *
- * @private
- */
-
- _createClass(MasterPlaylistController, [{
- key: 'setupMasterPlaylistLoaderListeners_',
- value: function setupMasterPlaylistLoaderListeners_() {
- var _this2 = this;
-
- this.masterPlaylistLoader_.on('loadedmetadata', function () {
- var media = _this2.masterPlaylistLoader_.media();
- var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000;
-
- // If we don't have any more available playlists, we don't want to
- // timeout the request.
- if (_this2.masterPlaylistLoader_.isLowestEnabledRendition_()) {
- _this2.requestOptions_.timeout = 0;
- } else {
- _this2.requestOptions_.timeout = requestTimeout;
- }
-
- // if this isn't a live video and preload permits, start
- // downloading segments
- if (media.endList && _this2.tech_.preload() !== 'none') {
- _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_);
- _this2.mainSegmentLoader_.load();
- }
-
- _this2.fillAudioTracks_();
- _this2.setupAudio();
-
- _this2.fillSubtitleTracks_();
- _this2.setupSubtitles();
-
- try {
- _this2.setupSourceBuffers_();
- } catch (e) {
- _videoJs2['default'].log.warn('Failed to create SourceBuffers', e);
- return _this2.mediaSource.endOfStream('decode');
- }
- _this2.setupFirstPlay();
-
- _this2.trigger('audioupdate');
- _this2.trigger('selectedinitialmedia');
- });
-
- this.masterPlaylistLoader_.on('loadedplaylist', function () {
- var updatedPlaylist = _this2.masterPlaylistLoader_.media();
-
- if (!updatedPlaylist) {
- // select the initial variant
- _this2.initialMedia_ = _this2.selectPlaylist();
- _this2.masterPlaylistLoader_.media(_this2.initialMedia_);
- return;
- }
-
- if (_this2.useCueTags_) {
- _this2.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`
- _this2.mainSegmentLoader_.playlist(updatedPlaylist, _this2.requestOptions_);
- _this2.updateDuration();
-
- // 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 (!_this2.tech_.paused()) {
- _this2.mainSegmentLoader_.load();
- }
-
- if (!updatedPlaylist.endList) {
- (function () {
- var addSeekableRange = function addSeekableRange() {
- var seekable = _this2.seekable();
-
- if (seekable.length !== 0) {
- _this2.mediaSource.addSeekableRange_(seekable.start(0), seekable.end(0));
- }
- };
-
- if (_this2.duration() !== Infinity) {
- (function () {
- var onDurationchange = function onDurationchange() {
- if (_this2.duration() === Infinity) {
- addSeekableRange();
- } else {
- _this2.tech_.one('durationchange', onDurationchange);
- }
- };
-
- _this2.tech_.one('durationchange', onDurationchange);
- })();
- } else {
- addSeekableRange();
- }
- })();
- }
- });
-
- this.masterPlaylistLoader_.on('error', function () {
- _this2.blacklistCurrentPlaylist(_this2.masterPlaylistLoader_.error);
- });
-
- this.masterPlaylistLoader_.on('mediachanging', function () {
- _this2.mainSegmentLoader_.abort();
- _this2.mainSegmentLoader_.pause();
- });
-
- this.masterPlaylistLoader_.on('mediachange', function () {
- var media = _this2.masterPlaylistLoader_.media();
- var requestTimeout = _this2.masterPlaylistLoader_.targetDuration * 1.5 * 1000;
- var activeAudioGroup = undefined;
- var activeTrack = undefined;
-
- // If we don't have any more available playlists, we don't want to
- // timeout the request.
- if (_this2.masterPlaylistLoader_.isLowestEnabledRendition_()) {
- _this2.requestOptions_.timeout = 0;
- } else {
- _this2.requestOptions_.timeout = requestTimeout;
- }
-
- // 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`
- _this2.mainSegmentLoader_.playlist(media, _this2.requestOptions_);
- _this2.mainSegmentLoader_.load();
-
- // if the audio group has changed, a new audio track has to be
- // enabled
- activeAudioGroup = _this2.activeAudioGroup();
- activeTrack = activeAudioGroup.filter(function (track) {
- return track.enabled;
- })[0];
- if (!activeTrack) {
- _this2.setupAudio();
- _this2.trigger('audioupdate');
- }
- _this2.setupSubtitles();
-
- _this2.tech_.trigger({
- type: 'mediachange',
- bubbles: true
- });
- });
-
- this.masterPlaylistLoader_.on('playlistunchanged', function () {
- var updatedPlaylist = _this2.masterPlaylistLoader_.media();
- var playlistOutdated = _this2.stuckAtPlaylistEnd_(updatedPlaylist);
-
- if (playlistOutdated) {
- // Playlist has stopped updating and we're stuck at its end. Try to
- // blacklist 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).
- _this2.blacklistCurrentPlaylist({
- message: 'Playlist no longer updating.'
- });
- // useful for monitoring QoS
- _this2.tech_.trigger('playliststuck');
- }
- });
- }
-
- /**
- * Register event handlers on the segment loaders. A helper function
- * for construction time.
- *
- * @private
- */
- }, {
- key: 'setupSegmentLoaderListeners_',
- value: function setupSegmentLoaderListeners_() {
- var _this3 = this;
-
- this.mainSegmentLoader_.on('bandwidthupdate', function () {
- // figure out what stream the next segment should be downloaded from
- // with the updated bandwidth information
- _this3.masterPlaylistLoader_.media(_this3.selectPlaylist());
- });
- this.mainSegmentLoader_.on('progress', function () {
- _this3.trigger('progress');
- });
-
- this.mainSegmentLoader_.on('error', function () {
- _this3.blacklistCurrentPlaylist(_this3.mainSegmentLoader_.error());
- });
-
- this.mainSegmentLoader_.on('syncinfoupdate', function () {
- _this3.onSyncInfoUpdate_();
- });
-
- this.audioSegmentLoader_.on('syncinfoupdate', function () {
- _this3.onSyncInfoUpdate_();
- });
-
- this.audioSegmentLoader_.on('error', function () {
- _videoJs2['default'].log.warn('Problem encountered with the current alternate audio track' + '. Switching back to default.');
- _this3.audioSegmentLoader_.abort();
- _this3.audioPlaylistLoader_ = null;
- _this3.setupAudio();
- });
-
- this.subtitleSegmentLoader_.on('error', this.handleSubtitleError_.bind(this));
- }
- }, {
- key: 'handleAudioinfoUpdate_',
- value: function handleAudioinfoUpdate_(event) {
- if (Hls.supportsAudioInfoChange_() || !this.audioInfo_ || !objectChanged(this.audioInfo_, event.info)) {
- this.audioInfo_ = event.info;
- return;
- }
-
- var error = 'had different audio properties (channels, sample rate, etc.) ' + 'or changed in some other way. This behavior is currently ' + 'unsupported in Firefox 48 and below due to an issue: \n\n' + 'https://bugzilla.mozilla.org/show_bug.cgi?id=1247138\n\n';
-
- var enabledIndex = this.activeAudioGroup().map(function (track) {
- return track.enabled;
- }).indexOf(true);
- var enabledTrack = this.activeAudioGroup()[enabledIndex];
- var defaultTrack = this.activeAudioGroup().filter(function (track) {
- return track.properties_ && track.properties_['default'];
- })[0];
-
- // they did not switch audiotracks
- // blacklist the current playlist
- if (!this.audioPlaylistLoader_) {
- error = 'The rendition that we tried to switch to ' + error + 'Unfortunately that means we will have to blacklist ' + 'the current playlist and switch to another. Sorry!';
- this.blacklistCurrentPlaylist();
- } else {
- error = 'The audio track \'' + enabledTrack.label + '\' that we tried to ' + ('switch to ' + error + ' Unfortunately this means we will have to ') + ('return you to the main track \'' + defaultTrack.label + '\'. Sorry!');
- defaultTrack.enabled = true;
- this.activeAudioGroup().splice(enabledIndex, 1);
- this.trigger('audioupdate');
- }
-
- _videoJs2['default'].log.warn(error);
- this.setupAudio();
- }
- }, {
- key: 'mediaSecondsLoaded_',
- value: function mediaSecondsLoaded_() {
- return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);
- }
-
- /**
- * fill our internal list of HlsAudioTracks with data from
- * the master playlist or use a default
- *
- * @private
- */
- }, {
- key: 'fillAudioTracks_',
- value: function fillAudioTracks_() {
- var master = this.master();
- var mediaGroups = master.mediaGroups || {};
-
- // force a default if we have none or we are not
- // in html5 mode (the only mode to support more than one
- // audio track)
- if (!mediaGroups || !mediaGroups.AUDIO || Object.keys(mediaGroups.AUDIO).length === 0 || this.mode_ !== 'html5') {
- // "main" audio group, track name "default"
- mediaGroups.AUDIO = { main: { 'default': { 'default': true } } };
- }
-
- for (var mediaGroup in mediaGroups.AUDIO) {
- if (!this.audioGroups_[mediaGroup]) {
- this.audioGroups_[mediaGroup] = [];
- }
-
- for (var label in mediaGroups.AUDIO[mediaGroup]) {
- var properties = mediaGroups.AUDIO[mediaGroup][label];
- var track = new _videoJs2['default'].AudioTrack({
- id: label,
- kind: this.audioTrackKind_(properties),
- enabled: false,
- language: properties.language,
- label: label
- });
-
- track.properties_ = properties;
- this.audioGroups_[mediaGroup].push(track);
- }
- }
-
- // enable the default active track
- (this.activeAudioGroup().filter(function (audioTrack) {
- return audioTrack.properties_['default'];
- })[0] || this.activeAudioGroup()[0]).enabled = true;
- }
-
- /**
- * Convert the properties of an HLS track into an audioTrackKind.
- *
- * @private
- */
- }, {
- key: 'audioTrackKind_',
- value: function audioTrackKind_(properties) {
- var kind = properties['default'] ? 'main' : 'alternative';
-
- if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {
- kind = 'main-desc';
- }
-
- return kind;
- }
-
- /**
- * fill our internal list of Subtitle Tracks with data from
- * the master playlist or use a default
- *
- * @private
- */
- }, {
- key: 'fillSubtitleTracks_',
- value: function fillSubtitleTracks_() {
- var master = this.master();
- var mediaGroups = master.mediaGroups || {};
-
- for (var mediaGroup in mediaGroups.SUBTITLES) {
- if (!this.subtitleGroups_.groups[mediaGroup]) {
- this.subtitleGroups_.groups[mediaGroup] = [];
- }
-
- for (var label in mediaGroups.SUBTITLES[mediaGroup]) {
- var properties = mediaGroups.SUBTITLES[mediaGroup][label];
-
- if (!properties.forced) {
- this.subtitleGroups_.groups[mediaGroup].push(_videoJs2['default'].mergeOptions({ id: label }, properties));
-
- if (typeof this.subtitleGroups_.tracks[label] === 'undefined') {
- var track = this.tech_.addRemoteTextTrack({
- id: label,
- kind: 'subtitles',
- enabled: false,
- language: properties.language,
- label: label
- }, true).track;
-
- this.subtitleGroups_.tracks[label] = track;
- }
- }
- }
- }
-
- // Do not enable a default subtitle track. Wait for user interaction instead.
- }
-
- /**
- * Call load on our SegmentLoaders
- */
- }, {
- key: 'load',
- value: function load() {
- this.mainSegmentLoader_.load();
- if (this.audioPlaylistLoader_) {
- this.audioSegmentLoader_.load();
- }
- if (this.subtitlePlaylistLoader_) {
- this.subtitleSegmentLoader_.load();
- }
- }
-
- /**
- * Returns the audio group for the currently active primary
- * media playlist.
- */
- }, {
- key: 'activeAudioGroup',
- value: function activeAudioGroup() {
- var videoPlaylist = this.masterPlaylistLoader_.media();
- var result = undefined;
-
- if (videoPlaylist.attributes && videoPlaylist.attributes.AUDIO) {
- result = this.audioGroups_[videoPlaylist.attributes.AUDIO];
- }
-
- return result || this.audioGroups_.main;
- }
-
- /**
- * Returns the subtitle group for the currently active primary
- * media playlist.
- */
- }, {
- key: 'activeSubtitleGroup_',
- value: function activeSubtitleGroup_() {
- var videoPlaylist = this.masterPlaylistLoader_.media();
- var result = undefined;
-
- if (!videoPlaylist) {
- return null;
- }
-
- if (videoPlaylist.attributes && videoPlaylist.attributes.SUBTITLES) {
- result = this.subtitleGroups_.groups[videoPlaylist.attributes.SUBTITLES];
- }
-
- return result || this.subtitleGroups_.groups.main;
- }
- }, {
- key: 'activeSubtitleTrack_',
- value: function activeSubtitleTrack_() {
- for (var trackName in this.subtitleGroups_.tracks) {
- if (this.subtitleGroups_.tracks[trackName].mode === 'showing') {
- return this.subtitleGroups_.tracks[trackName];
- }
- }
-
- return null;
- }
- }, {
- key: 'handleSubtitleError_',
- value: function handleSubtitleError_() {
- _videoJs2['default'].log.warn('Problem encountered loading the subtitle track' + '. Switching back to default.');
-
- this.subtitleSegmentLoader_.abort();
-
- var track = this.activeSubtitleTrack_();
-
- if (track) {
- track.mode = 'disabled';
- }
-
- this.setupSubtitles();
- }
-
- /**
- * Determine the correct audio rendition based on the active
- * AudioTrack and initialize a PlaylistLoader and SegmentLoader if
- * necessary. This method is called once automatically before
- * playback begins to enable the default audio track and should be
- * invoked again if the track is changed.
- */
- }, {
- key: 'setupAudio',
- value: function setupAudio() {
- var _this4 = this;
-
- // determine whether seperate loaders are required for the audio
- // rendition
- var audioGroup = this.activeAudioGroup();
- var track = audioGroup.filter(function (audioTrack) {
- return audioTrack.enabled;
- })[0];
-
- if (!track) {
- track = audioGroup.filter(function (audioTrack) {
- return audioTrack.properties_['default'];
- })[0] || audioGroup[0];
- track.enabled = true;
- }
-
- // stop playlist and segment loading for audio
- if (this.audioPlaylistLoader_) {
- this.audioPlaylistLoader_.dispose();
- this.audioPlaylistLoader_ = null;
- }
- this.audioSegmentLoader_.pause();
-
- if (!track.properties_.resolvedUri) {
- this.mainSegmentLoader_.resetEverything();
- return;
- }
- this.audioSegmentLoader_.resetEverything();
-
- // startup playlist and segment loaders for the enabled audio
- // track
- this.audioPlaylistLoader_ = new _playlistLoader2['default'](track.properties_.resolvedUri, this.hls_, this.withCredentials);
- this.audioPlaylistLoader_.load();
-
- this.audioPlaylistLoader_.on('loadedmetadata', function () {
- var audioPlaylist = _this4.audioPlaylistLoader_.media();
-
- _this4.audioSegmentLoader_.playlist(audioPlaylist, _this4.requestOptions_);
-
- // if the video is already playing, or if this isn't a live video and preload
- // permits, start downloading segments
- if (!_this4.tech_.paused() || audioPlaylist.endList && _this4.tech_.preload() !== 'none') {
- _this4.audioSegmentLoader_.load();
- }
-
- if (!audioPlaylist.endList) {
- _this4.audioPlaylistLoader_.trigger('firstplay');
- }
- });
-
- this.audioPlaylistLoader_.on('loadedplaylist', function () {
- var updatedPlaylist = undefined;
-
- if (_this4.audioPlaylistLoader_) {
- updatedPlaylist = _this4.audioPlaylistLoader_.media();
- }
-
- if (!updatedPlaylist) {
- // only one playlist to select
- _this4.audioPlaylistLoader_.media(_this4.audioPlaylistLoader_.playlists.master.playlists[0]);
- return;
- }
-
- _this4.audioSegmentLoader_.playlist(updatedPlaylist, _this4.requestOptions_);
- });
-
- this.audioPlaylistLoader_.on('error', function () {
- _videoJs2['default'].log.warn('Problem encountered loading the alternate audio track' + '. Switching back to default.');
- _this4.audioSegmentLoader_.abort();
- _this4.setupAudio();
- });
- }
-
- /**
- * Determine the correct subtitle playlist based on the active
- * SubtitleTrack and initialize a PlaylistLoader and SegmentLoader if
- * necessary. This method is called once automatically before
- * playback begins to enable the default subtitle track and should be
- * invoked again if the track is changed.
- */
- }, {
- key: 'setupSubtitles',
- value: function setupSubtitles() {
- var _this5 = this;
-
- var subtitleGroup = this.activeSubtitleGroup_();
- var track = this.activeSubtitleTrack_();
-
- this.subtitleSegmentLoader_.pause();
-
- if (!track) {
- // stop playlist and segment loading for subtitles
- if (this.subtitlePlaylistLoader_) {
- this.subtitlePlaylistLoader_.dispose();
- this.subtitlePlaylistLoader_ = null;
- }
- return;
- }
-
- var properties = subtitleGroup.filter(function (subtitleProperties) {
- return subtitleProperties.id === track.id;
- })[0];
-
- // startup playlist and segment loaders for the enabled subtitle track
- if (!this.subtitlePlaylistLoader_ ||
- // if the media hasn't loaded yet, we don't have the URI to check, so it is
- // easiest to simply recreate the playlist loader
- !this.subtitlePlaylistLoader_.media() || this.subtitlePlaylistLoader_.media().resolvedUri !== properties.resolvedUri) {
-
- if (this.subtitlePlaylistLoader_) {
- this.subtitlePlaylistLoader_.dispose();
- }
-
- // reset the segment loader only when the subtitle playlist is changed instead of
- // every time setupSubtitles is called since switching subtitle tracks fires
- // multiple `change` events on the TextTrackList
- this.subtitleSegmentLoader_.resetEverything();
-
- // can't reuse playlistloader because we're only using single renditions and not a
- // proper master
- this.subtitlePlaylistLoader_ = new _playlistLoader2['default'](properties.resolvedUri, this.hls_, this.withCredentials);
-
- this.subtitlePlaylistLoader_.on('loadedmetadata', function () {
- var subtitlePlaylist = _this5.subtitlePlaylistLoader_.media();
-
- _this5.subtitleSegmentLoader_.playlist(subtitlePlaylist, _this5.requestOptions_);
- _this5.subtitleSegmentLoader_.track(_this5.activeSubtitleTrack_());
-
- // if the video is already playing, or if this isn't a live video and preload
- // permits, start downloading segments
- if (!_this5.tech_.paused() || subtitlePlaylist.endList && _this5.tech_.preload() !== 'none') {
- _this5.subtitleSegmentLoader_.load();
- }
- });
-
- this.subtitlePlaylistLoader_.on('loadedplaylist', function () {
- var updatedPlaylist = undefined;
-
- if (_this5.subtitlePlaylistLoader_) {
- updatedPlaylist = _this5.subtitlePlaylistLoader_.media();
- }
-
- if (!updatedPlaylist) {
- return;
- }
-
- _this5.subtitleSegmentLoader_.playlist(updatedPlaylist, _this5.requestOptions_);
- });
-
- this.subtitlePlaylistLoader_.on('error', this.handleSubtitleError_.bind(this));
- }
-
- if (this.subtitlePlaylistLoader_.media() && this.subtitlePlaylistLoader_.media().resolvedUri === properties.resolvedUri) {
- this.subtitleSegmentLoader_.load();
- } else {
- this.subtitlePlaylistLoader_.load();
- }
- }
-
- /**
- * Re-tune playback quality level for the current player
- * conditions. This method may perform destructive actions, like
- * removing already buffered content, to readjust the currently
- * active playlist quickly.
- *
- * @private
- */
- }, {
- key: 'fastQualityChange_',
- value: function fastQualityChange_() {
- var media = this.selectPlaylist();
-
- if (media !== this.masterPlaylistLoader_.media()) {
- this.masterPlaylistLoader_.media(media);
-
- this.mainSegmentLoader_.resetLoader();
- // don't need to reset audio as it is reset when media changes
- }
- }
-
- /**
- * Begin playback.
- */
- }, {
- key: 'play',
- value: function play() {
- if (this.setupFirstPlay()) {
- return;
- }
-
- if (this.tech_.ended()) {
- this.tech_.setCurrentTime(0);
- }
-
- if (this.hasPlayed_()) {
- this.load();
- }
-
- var 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.
- */
- }, {
- key: 'setupFirstPlay',
- value: function setupFirstPlay() {
- var seekable = undefined;
- var media = this.masterPlaylistLoader_.media();
-
- // check that everything is ready to begin buffering in the live
- // scenario
- // 1) the active media playlist is available
- if (media &&
- // 2) the player is not paused
- !this.tech_.paused() &&
- // 3) the player has not started playing
- !this.hasPlayed_()) {
-
- // when the video is a live stream
- if (!media.endList) {
- this.trigger('firstplay');
-
- // seek to the latest media position for live videos
- seekable = this.seekable();
- if (seekable.length) {
- this.tech_.setCurrentTime(seekable.end(0));
- }
- }
- this.hasPlayed_ = function () {
- return true;
- };
- // now that we are ready, load the segment
- this.load();
- return true;
- }
- return false;
- }
-
- /**
- * handle the sourceopen event on the MediaSource
- *
- * @private
- */
- }, {
- key: 'handleSourceOpen_',
- value: function 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)
- try {
- this.setupSourceBuffers_();
- } catch (e) {
- _videoJs2['default'].log.warn('Failed to create Source Buffers', e);
- return this.mediaSource.endOfStream('decode');
- }
-
- // 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()) {
- this.tech_.play();
- }
-
- this.trigger('sourceopen');
- }
-
- /**
- * 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
- */
- }, {
- key: 'stuckAtPlaylistEnd_',
- value: function stuckAtPlaylistEnd_(playlist) {
- var seekable = this.seekable();
-
- if (!seekable.length) {
- // playlist doesn't have enough information to determine whether we are stuck
- 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
- var absolutePlaylistEnd = Hls.Playlist.playlistEnd(playlist);
- var currentTime = this.tech_.currentTime();
- var buffered = this.tech_.buffered();
-
- if (!buffered.length) {
- // return true if the playhead reached the absolute end of the playlist
- return absolutePlaylistEnd - currentTime <= _ranges2['default'].TIME_FUDGE_FACTOR;
- }
- var 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 <= _ranges2['default'].TIME_FUDGE_FACTOR && absolutePlaylistEnd - bufferedEnd <= _ranges2['default'].TIME_FUDGE_FACTOR;
- }
-
- /**
- * Blacklists a playlist when an error occurs for a set amount of time
- * making it unavailable for selection by the rendition selection algorithm
- * and then forces a new playlist (rendition) selection.
- *
- * @param {Object=} error an optional error that may include the playlist
- * to blacklist
- */
- }, {
- key: 'blacklistCurrentPlaylist',
- value: function blacklistCurrentPlaylist() {
- var error = arguments.length <= 0 || arguments[0] === undefined ? {} : arguments[0];
-
- var currentPlaylist = undefined;
- var nextPlaylist = undefined;
-
- // 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
- // blacklisted instead of the currently selected playlist which is likely
- // out-of-date in this scenario
- currentPlaylist = error.playlist || this.masterPlaylistLoader_.media();
-
- // If there is no current playlist, then an error occurred while we were
- // trying to load the master OR while we were disposing of the tech
- if (!currentPlaylist) {
- this.error = error;
-
- try {
- return this.mediaSource.endOfStream('network');
- } catch (e) {
- return this.trigger('error');
- }
- }
-
- var isFinalRendition = this.masterPlaylistLoader_.isFinalRendition_();
-
- if (isFinalRendition) {
- // Never blacklisting this playlist because it's final rendition
- _videoJs2['default'].log.warn('Problem encountered with the current ' + 'HLS playlist. Trying again since it is the final playlist.');
-
- this.tech_.trigger('retryplaylist');
- return this.masterPlaylistLoader_.load(isFinalRendition);
- }
- // Blacklist this playlist
- currentPlaylist.excludeUntil = Date.now() + this.blacklistDuration * 1000;
- this.tech_.trigger('blacklistplaylist');
-
- // Select a new playlist
- nextPlaylist = this.selectPlaylist();
- _videoJs2['default'].log.warn('Problem encountered with the current HLS playlist.' + (error.message ? ' ' + error.message : '') + ' Switching to another playlist.');
-
- return this.masterPlaylistLoader_.media(nextPlaylist);
- }
-
- /**
- * Pause all segment loaders
- */
- }, {
- key: 'pauseLoading',
- value: function pauseLoading() {
- this.mainSegmentLoader_.pause();
- if (this.audioPlaylistLoader_) {
- this.audioSegmentLoader_.pause();
- }
- if (this.subtitlePlaylistLoader_) {
- this.subtitleSegmentLoader_.pause();
- }
- }
-
- /**
- * set the current time on all segment loaders
- *
- * @param {TimeRange} currentTime the current time to set
- * @return {TimeRange} the current time
- */
- }, {
- key: 'setCurrentTime',
- value: function setCurrentTime(currentTime) {
- var buffered = _ranges2['default'].findRange(this.tech_.buffered(), currentTime);
-
- if (!(this.masterPlaylistLoader_ && this.masterPlaylistLoader_.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.masterPlaylistLoader_.media().segments) {
- return 0;
- }
-
- // In flash playback, the segment loaders should be reset on every seek, even
- // in buffer seeks
- var isFlash = this.mode_ === 'flash' || this.mode_ === 'auto' && !_videoJs2['default'].MediaSource.supportsNativeMediaSources();
-
- // if the seek location is already buffered, continue buffering as
- // usual
- if (buffered && buffered.length && !isFlash) {
- return currentTime;
- }
-
- // cancel outstanding requests so we begin buffering at the new
- // location
- this.mainSegmentLoader_.resetEverything();
- this.mainSegmentLoader_.abort();
- if (this.audioPlaylistLoader_) {
- this.audioSegmentLoader_.resetEverything();
- this.audioSegmentLoader_.abort();
- }
- if (this.subtitlePlaylistLoader_) {
- this.subtitleSegmentLoader_.resetEverything();
- this.subtitleSegmentLoader_.abort();
- }
-
- if (!this.tech_.paused()) {
- this.mainSegmentLoader_.load();
- if (this.audioPlaylistLoader_) {
- this.audioSegmentLoader_.load();
- }
- if (this.subtitlePlaylistLoader_) {
- this.subtitleSegmentLoader_.load();
- }
- }
- }
-
- /**
- * get the current duration
- *
- * @return {TimeRange} the duration
- */
- }, {
- key: 'duration',
- value: function duration() {
- if (!this.masterPlaylistLoader_) {
- return 0;
- }
-
- if (this.mediaSource) {
- return this.mediaSource.duration;
- }
-
- return Hls.Playlist.duration(this.masterPlaylistLoader_.media());
- }
-
- /**
- * check the seekable range
- *
- * @return {TimeRange} the seekable range
- */
- }, {
- key: 'seekable',
- value: function seekable() {
- return this.seekable_;
- }
- }, {
- key: 'onSyncInfoUpdate_',
- value: function onSyncInfoUpdate_() {
- var media = undefined;
- var mainSeekable = undefined;
- var audioSeekable = undefined;
-
- if (!this.masterPlaylistLoader_) {
- return;
- }
-
- media = this.masterPlaylistLoader_.media();
-
- if (!media) {
- return;
- }
-
- mainSeekable = Hls.Playlist.seekable(media);
- if (mainSeekable.length === 0) {
- return;
- }
-
- if (this.audioPlaylistLoader_) {
- audioSeekable = Hls.Playlist.seekable(this.audioPlaylistLoader_.media());
- if (audioSeekable.length === 0) {
- return;
- }
- }
-
- 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_ = _videoJs2['default'].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)]]);
- }
-
- this.tech_.trigger('seekablechanged');
- }
-
- /**
- * Update the player duration
- */
- }, {
- key: 'updateDuration',
- value: function updateDuration() {
- var _this6 = this;
-
- var oldDuration = this.mediaSource.duration;
- var newDuration = Hls.Playlist.duration(this.masterPlaylistLoader_.media());
- var buffered = this.tech_.buffered();
- var setDuration = function setDuration() {
- _this6.mediaSource.duration = newDuration;
- _this6.tech_.trigger('durationchange');
-
- _this6.mediaSource.removeEventListener('sourceopen', setDuration);
- };
-
- if (buffered.length > 0) {
- newDuration = Math.max(newDuration, buffered.end(buffered.length - 1));
- }
-
- // if the duration has changed, invalidate the cached value
- if (oldDuration !== newDuration) {
- // update the duration
- if (this.mediaSource.readyState !== 'open') {
- this.mediaSource.addEventListener('sourceopen', setDuration);
- } else {
- setDuration();
- }
- }
- }
-
- /**
- * dispose of the MasterPlaylistController and everything
- * that it controls
- */
- }, {
- key: 'dispose',
- value: function dispose() {
- this.decrypter_.terminate();
- this.masterPlaylistLoader_.dispose();
- this.mainSegmentLoader_.dispose();
-
- if (this.audioPlaylistLoader_) {
- this.audioPlaylistLoader_.dispose();
- }
- if (this.subtitlePlaylistLoader_) {
- this.subtitlePlaylistLoader_.dispose();
- }
- this.audioSegmentLoader_.dispose();
- this.subtitleSegmentLoader_.dispose();
- }
-
- /**
- * return the master playlist object if we have one
- *
- * @return {Object} the master playlist object that we parsed
- */
- }, {
- key: 'master',
- value: function master() {
- return this.masterPlaylistLoader_.master;
- }
-
- /**
- * return the currently selected playlist
- *
- * @return {Object} the currently selected playlist object that we parsed
- */
- }, {
- key: 'media',
- value: function media() {
- // playlist loader will not return media if it has not been fully loaded
- return this.masterPlaylistLoader_.media() || this.initialMedia_;
- }
-
- /**
- * setup our internal source buffers on our segment Loaders
- *
- * @private
- */
- }, {
- key: 'setupSourceBuffers_',
- value: function setupSourceBuffers_() {
- var media = this.masterPlaylistLoader_.media();
- var mimeTypes = undefined;
-
- // wait until a media playlist is available and the Media Source is
- // attached
- if (!media || this.mediaSource.readyState !== 'open') {
- return;
- }
-
- mimeTypes = mimeTypesForPlaylist_(this.masterPlaylistLoader_.master, media);
- if (mimeTypes.length < 1) {
- this.error = 'No compatible SourceBuffer configuration for the variant stream:' + media.resolvedUri;
- return this.mediaSource.endOfStream('decode');
- }
- this.mainSegmentLoader_.mimeType(mimeTypes[0]);
- if (mimeTypes[1]) {
- this.audioSegmentLoader_.mimeType(mimeTypes[1]);
- }
-
- // exclude any incompatible variant streams from future playlist
- // selection
- this.excludeIncompatibleVariants_(media);
- }
-
- /**
- * Blacklist 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 master playlist that
- * do not appear to have compatible codec or stream configurations
- * will be excluded from the default playlist selection algorithm
- * indefinitely.
- * @private
- */
- }, {
- key: 'excludeIncompatibleVariants_',
- value: function excludeIncompatibleVariants_(media) {
- var master = this.masterPlaylistLoader_.master;
- var codecCount = 2;
- var videoCodec = null;
- var codecs = undefined;
-
- if (media.attributes && media.attributes.CODECS) {
- codecs = parseCodecs(media.attributes.CODECS);
- videoCodec = codecs.videoCodec;
- codecCount = codecs.codecCount;
- }
- master.playlists.forEach(function (variant) {
- var variantCodecs = {
- codecCount: 2,
- videoCodec: null
- };
-
- if (variant.attributes && variant.attributes.CODECS) {
- var codecString = variant.attributes.CODECS;
-
- variantCodecs = parseCodecs(codecString);
-
- if (window.MediaSource && window.MediaSource.isTypeSupported && !window.MediaSource.isTypeSupported('video/mp4; codecs="' + mapLegacyAvcCodecs_(codecString) + '"')) {
- variant.excludeUntil = Infinity;
- }
- }
-
- // if the streams differ in the presence or absence of audio or
- // video, they are incompatible
- if (variantCodecs.codecCount !== codecCount) {
- variant.excludeUntil = Infinity;
- }
-
- // if h.264 is specified on the current playlist, some flavor of
- // it must be specified on all compatible variants
- if (variantCodecs.videoCodec !== videoCodec) {
- variant.excludeUntil = Infinity;
- }
- });
- }
- }, {
- key: 'updateAdCues_',
- value: function updateAdCues_(media) {
- var offset = 0;
- var seekable = this.seekable();
-
- if (seekable.length) {
- offset = seekable.start(0);
- }
-
- _adCueTags2['default'].updateAdCues(media, this.cueTagsTrack_, offset);
- }
- }]);
-
- return MasterPlaylistController;
- })(_videoJs2['default'].EventTarget);
-
- exports.MasterPlaylistController = MasterPlaylistController;
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./ad-cue-tags":1,"./decrypter-worker":4,"./playlist-loader":8,"./ranges":10,"./segment-loader":14,"./sync-controller":17,"./vtt-segment-loader":18,"videojs-contrib-media-sources/es5/codec-utils":64,"webworkify":75}],6:[function(require,module,exports){
- (function (global){
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _binUtils = require('./bin-utils');
-
- var REQUEST_ERRORS = {
- FAILURE: 2,
- TIMEOUT: -101,
- ABORTED: -102
- };
-
- exports.REQUEST_ERRORS = REQUEST_ERRORS;
- /**
- * 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
- */
- var byterangeStr = function byterangeStr(byterange) {
- var byterangeStart = undefined;
- var byterangeEnd = undefined;
-
- // `byterangeEnd` is one less than `offset + length` because the HTTP range
- // header uses inclusive ranges
- byterangeEnd = byterange.offset + byterange.length - 1;
- byterangeStart = byterange.offset;
- 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
- */
- var segmentXhrHeaders = function segmentXhrHeaders(segment) {
- var headers = {};
-
- if (segment.byterange) {
- headers.Range = byterangeStr(segment.byterange);
- }
- return headers;
- };
-
- /**
- * Abort all requests
- *
- * @param {Object} activeXhrs - an object that tracks all XHR requests
- */
- var abortAll = function abortAll(activeXhrs) {
- activeXhrs.forEach(function (xhr) {
- xhr.abort();
- });
- };
-
- /**
- * Gather important bandwidth stats once a request has completed
- *
- * @param {Object} request - the XHR request from which to gather stats
- */
- var getRequestStats = function 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
- */
- var getProgressStats = function getProgressStats(progressEvent) {
- var request = progressEvent.target;
- var roundTripTime = Date.now() - request.requestTime;
- var stats = {
- bandwidth: Infinity,
- bytesReceived: 0,
- roundTripTime: roundTripTime || 0
- };
-
- if (progressEvent.lengthComputable) {
- 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
- */
- var handleErrors = function 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
- };
- }
-
- 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 {Function} finishProcessingFn - a callback to execute to continue processing
- * this request
- */
- var handleKeyResponse = function handleKeyResponse(segment, finishProcessingFn) {
- return function (error, request) {
- var response = request.response;
- var 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);
- }
-
- var view = new DataView(response);
-
- segment.key.bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);
- return finishProcessingFn(null, segment);
- };
- };
-
- /**
- * 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
- */
- var handleInitSegmentResponse = function handleInitSegmentResponse(segment, finishProcessingFn) {
- return function (error, request) {
- var errorObj = handleErrors(error, request);
-
- if (errorObj) {
- return finishProcessingFn(errorObj, segment);
- }
- segment.map.bytes = new Uint8Array(request.response);
- return 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
- */
- var handleSegmentResponse = function handleSegmentResponse(segment, finishProcessingFn) {
- return function (error, request) {
- var errorObj = handleErrors(error, request);
-
- if (errorObj) {
- return finishProcessingFn(errorObj, segment);
- }
- segment.stats = getRequestStats(request);
-
- if (segment.key) {
- segment.encryptedBytes = new Uint8Array(request.response);
- } else {
- segment.bytes = new Uint8Array(request.response);
- }
-
- return finishProcessingFn(null, segment);
- };
- };
-
- /**
- * Decrypt the segment via the decryption web worker
- *
- * @param {WebWorker} decrypter - a WebWorker interface to AES-128 decryption routines
- * @param {Object} segment - a simplified copy of the segmentInfo object from SegmentLoader
- * @param {Function} doneFn - a callback that is executed after decryption has completed
- */
- var decryptSegment = function decryptSegment(decrypter, segment, doneFn) {
- var decryptionHandler = function decryptionHandler(event) {
- if (event.data.source === segment.requestId) {
- decrypter.removeEventListener('message', decryptionHandler);
- var decrypted = event.data.decrypted;
-
- segment.bytes = new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength);
- return doneFn(null, segment);
- }
- };
-
- decrypter.addEventListener('message', decryptionHandler);
-
- // this is an encrypted segment
- // incrementally decrypt the segment
- decrypter.postMessage((0, _binUtils.createTransferableMessage)({
- source: segment.requestId,
- encrypted: segment.encryptedBytes,
- key: segment.key.bytes,
- iv: segment.key.iv
- }), [segment.encryptedBytes.buffer, segment.key.bytes.buffer]);
- };
-
- /**
- * The purpose of this function is to get the most pertinent error from the
- * array of errors.
- * For instance if a timeout and two aborts occur, then the aborts were
- * likely triggered by the timeout so return that error object.
- */
- var getMostImportantError = function getMostImportantError(errors) {
- return errors.reduce(function (prev, err) {
- return err.code > prev.code ? err : prev;
- });
- };
-
- /**
- * 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} decrypter - a WebWorker interface to AES-128 decryption routines
- * @param {Function} doneFn - a callback that is executed after all resources have been
- * downloaded and any decryption completed
- */
- var waitForCompletion = function waitForCompletion(activeXhrs, decrypter, doneFn) {
- var errors = [];
- var count = 0;
-
- return function (error, segment) {
- if (error) {
- // If there are errors, we have to abort any outstanding requests
- abortAll(activeXhrs);
- errors.push(error);
- }
- count += 1;
-
- if (count === activeXhrs.length) {
- // Keep track of when *all* of the requests have completed
- segment.endOfAllRequests = Date.now();
-
- if (errors.length > 0) {
- var worstError = getMostImportantError(errors);
-
- return doneFn(worstError, segment);
- }
- if (segment.encryptedBytes) {
- return decryptSegment(decrypter, segment, doneFn);
- }
- // Otherwise, everything is ready just continue
- return doneFn(null, segment);
- }
- };
- };
-
- /**
- * 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 {Event} event - the progress event object from XMLHttpRequest
- */
- var handleProgress = function handleProgress(segment, progressFn) {
- return function (event) {
- segment.stats = getProgressStats(event);
- 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,
- * [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} progressFn - a callback that receives progress events from the main segment's xhr request
- * @param {Function} doneFn - a callback that is executed only once all requests have succeeded or failed
- * @returns {Function} a function that, when invoked, immediately aborts all outstanding requests
- */
- var mediaSegmentRequest = function mediaSegmentRequest(xhr, xhrOptions, decryptionWorker, segment, progressFn, doneFn) {
- var activeXhrs = [];
- var finishProcessingFn = waitForCompletion(activeXhrs, decryptionWorker, doneFn);
-
- // optionally, request the decryption key
- if (segment.key) {
- var keyRequestOptions = _videoJs2['default'].mergeOptions(xhrOptions, {
- uri: segment.key.resolvedUri,
- responseType: 'arraybuffer'
- });
- var keyRequestCallback = handleKeyResponse(segment, finishProcessingFn);
- var keyXhr = xhr(keyRequestOptions, keyRequestCallback);
-
- activeXhrs.push(keyXhr);
- }
-
- // optionally, request the associated media init segment
- if (segment.map && !segment.map.bytes) {
- var initSegmentOptions = _videoJs2['default'].mergeOptions(xhrOptions, {
- uri: segment.map.resolvedUri,
- responseType: 'arraybuffer',
- headers: segmentXhrHeaders(segment.map)
- });
- var initSegmentRequestCallback = handleInitSegmentResponse(segment, finishProcessingFn);
- var initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);
-
- activeXhrs.push(initSegmentXhr);
- }
-
- var segmentRequestOptions = _videoJs2['default'].mergeOptions(xhrOptions, {
- uri: segment.resolvedUri,
- responseType: 'arraybuffer',
- headers: segmentXhrHeaders(segment)
- });
- var segmentRequestCallback = handleSegmentResponse(segment, finishProcessingFn);
- var segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);
-
- segmentXhr.addEventListener('progress', handleProgress(segment, progressFn));
- activeXhrs.push(segmentXhr);
-
- return function () {
- return abortAll(activeXhrs);
- };
- };
- exports.mediaSegmentRequest = mediaSegmentRequest;
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./bin-utils":2}],7:[function(require,module,exports){
- (function (global){
- /**
- * @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.
- */
-
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _ranges = require('./ranges');
-
- var _ranges2 = _interopRequireDefault(_ranges);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- // Set of events that reset the playback-watcher time check logic and clear the timeout
- var timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];
-
- /**
- * @class PlaybackWatcher
- */
-
- var PlaybackWatcher = (function () {
- /**
- * Represents an PlaybackWatcher object.
- * @constructor
- * @param {object} options an object that includes the tech and settings
- */
-
- function PlaybackWatcher(options) {
- var _this = this;
-
- _classCallCheck(this, PlaybackWatcher);
-
- this.tech_ = options.tech;
- this.seekable = options.seekable;
-
- this.consecutiveUpdates = 0;
- this.lastRecordedTime = null;
- this.timer_ = null;
- this.checkCurrentTimeTimeout_ = null;
-
- if (options.debug) {
- this.logger_ = _videoJs2['default'].log.bind(_videoJs2['default'], 'playback-watcher ->');
- }
- this.logger_('initialize');
-
- var waitingHandler = function waitingHandler() {
- return _this.waiting_();
- };
- var cancelTimerHandler = function cancelTimerHandler() {
- return _this.cancelTimer_();
- };
- var fixesBadSeeksHandler = function fixesBadSeeksHandler() {
- return _this.fixesBadSeeks_();
- };
-
- this.tech_.on('seekablechanged', fixesBadSeeksHandler);
- this.tech_.on('waiting', waitingHandler);
- this.tech_.on(timerCancelEvents, cancelTimerHandler);
- this.monitorCurrentTime_();
-
- // Define the dispose function to clean up our events
- this.dispose = function () {
- _this.logger_('dispose');
- _this.tech_.off('seekablechanged', fixesBadSeeksHandler);
- _this.tech_.off('waiting', waitingHandler);
- _this.tech_.off(timerCancelEvents, cancelTimerHandler);
- if (_this.checkCurrentTimeTimeout_) {
- clearTimeout(_this.checkCurrentTimeTimeout_);
- }
- _this.cancelTimer_();
- };
- }
-
- /**
- * Periodically check current time to see if playback stopped
- *
- * @private
- */
-
- _createClass(PlaybackWatcher, [{
- key: 'monitorCurrentTime_',
- value: function monitorCurrentTime_() {
- this.checkCurrentTime_();
-
- if (this.checkCurrentTimeTimeout_) {
- clearTimeout(this.checkCurrentTimeTimeout_);
- }
-
- // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
- this.checkCurrentTimeTimeout_ = setTimeout(this.monitorCurrentTime_.bind(this), 250);
- }
-
- /**
- * 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
- */
- }, {
- key: 'checkCurrentTime_',
- value: function checkCurrentTime_() {
- if (this.tech_.seeking() && this.fixesBadSeeks_()) {
- this.consecutiveUpdates = 0;
- this.lastRecordedTime = this.tech_.currentTime();
- return;
- }
-
- if (this.tech_.paused() || this.tech_.seeking()) {
- return;
- }
-
- var currentTime = this.tech_.currentTime();
-
- 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;
- }
- }
-
- /**
- * Cancels any pending timers and resets the 'timeupdate' mechanism
- * designed to detect that we are stalled
- *
- * @private
- */
- }, {
- key: 'cancelTimer_',
- value: function cancelTimer_() {
- this.consecutiveUpdates = 0;
-
- if (this.timer_) {
- this.logger_('cancelTimer_');
- clearTimeout(this.timer_);
- }
-
- this.timer_ = null;
- }
-
- /**
- * Fixes situations where there's a bad seek
- *
- * @return {Boolean} whether an action was taken to fix the seek
- * @private
- */
- }, {
- key: 'fixesBadSeeks_',
- value: function fixesBadSeeks_() {
- var seekable = this.seekable();
- var currentTime = this.tech_.currentTime();
-
- if (this.tech_.seeking() && this.outsideOfSeekableWindow_(seekable, currentTime)) {
- var seekableEnd = seekable.end(seekable.length - 1);
-
- // sync to live point (if VOD, our seekable was updated and we're simply adjusting)
- this.logger_('Trying to seek outside of seekable at time ' + currentTime + ' with ' + ('seekable range ' + _ranges2['default'].printableRange(seekable) + '. Seeking to ') + (seekableEnd + '.'));
- this.tech_.setCurrentTime(seekableEnd);
- return true;
- }
-
- return false;
- }
-
- /**
- * Handler for situations when we determine the player is waiting
- *
- * @private
- */
- }, {
- key: 'waiting_',
- value: function waiting_() {
- var seekable = this.seekable();
- var currentTime = this.tech_.currentTime();
-
- if (this.tech_.seeking() && this.fixesBadSeeks_()) {
- return;
- }
-
- if (this.tech_.seeking() || this.timer_ !== null) {
- return;
- }
-
- if (this.fellOutOfLiveWindow_(seekable, currentTime)) {
- var livePoint = seekable.end(seekable.length - 1);
-
- this.logger_('Fell out of live window at time ' + currentTime + '. Seeking to ' + ('live point (seekable end) ' + livePoint));
- this.cancelTimer_();
- this.tech_.setCurrentTime(livePoint);
-
- // live window resyncs may be useful for monitoring QoS
- this.tech_.trigger('liveresync');
- return;
- }
-
- var buffered = this.tech_.buffered();
- var nextRange = _ranges2['default'].findNextRange(buffered, currentTime);
-
- if (this.videoUnderflow_(nextRange, buffered, currentTime)) {
- // 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.cancelTimer_();
- this.tech_.setCurrentTime(currentTime);
-
- // video underflow may be useful for monitoring QoS
- this.tech_.trigger('videounderflow');
- return;
- }
-
- // check for gap
- if (nextRange.length > 0) {
- var difference = nextRange.start(0) - currentTime;
-
- this.logger_('Stopped at ' + currentTime + ', setting timer for ' + difference + ', seeking ' + ('to ' + nextRange.start(0)));
-
- this.timer_ = setTimeout(this.skipTheGap_.bind(this), difference * 1000, currentTime);
- }
- }
- }, {
- key: 'outsideOfSeekableWindow_',
- value: function outsideOfSeekableWindow_(seekable, currentTime) {
- if (!seekable.length) {
- // we can't make a solid case if there's no seekable, default to false
- return false;
- }
-
- // provide a buffer of .1 seconds to handle rounding/imprecise numbers
- if (currentTime < seekable.start(0) - 0.1 || currentTime > seekable.end(seekable.length - 1) + 0.1) {
- return true;
- }
-
- return false;
- }
- }, {
- key: 'fellOutOfLiveWindow_',
- value: function fellOutOfLiveWindow_(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)) {
- return true;
- }
-
- return false;
- }
- }, {
- key: 'videoUnderflow_',
- value: function videoUnderflow_(nextRange, buffered, currentTime) {
- if (nextRange.length === 0) {
- // Even if there is no available next range, there is still a possibility we are
- // stuck in a gap due to video underflow.
- var gap = this.gapFromVideoUnderflow_(buffered, 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
- */
- }, {
- key: 'skipTheGap_',
- value: function skipTheGap_(scheduledCurrentTime) {
- var buffered = this.tech_.buffered();
- var currentTime = this.tech_.currentTime();
- var nextRange = _ranges2['default'].findNextRange(buffered, currentTime);
-
- this.cancelTimer_();
-
- 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) + _ranges2['default'].TIME_FUDGE_FACTOR);
- }
- }, {
- key: 'gapFromVideoUnderflow_',
- value: function 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.
- var gaps = _ranges2['default'].findGaps(buffered);
-
- for (var i = 0; i < gaps.length; i++) {
- var start = gaps.start(i);
- var end = gaps.end(i);
-
- // gap is starts no more than 4 seconds back
- if (currentTime - start < 4 && currentTime - start > 2) {
- return {
- start: start,
- end: end
- };
- }
- }
-
- return null;
- }
-
- /**
- * A debugging logger noop that is set to console.log only if debugging
- * is enabled globally
- *
- * @private
- */
- }, {
- key: 'logger_',
- value: function logger_() {}
- }]);
-
- return PlaybackWatcher;
- })();
-
- exports['default'] = PlaybackWatcher;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./ranges":10}],8:[function(require,module,exports){
- (function (global){
- /**
- * @file playlist-loader.js
- *
- * A state machine that manages the loading, caching, and updating of
- * M3U8 playlists.
- *
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _resolveUrl = require('./resolve-url');
-
- var _resolveUrl2 = _interopRequireDefault(_resolveUrl);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _playlistJs = require('./playlist.js');
-
- var _stream = require('./stream');
-
- var _stream2 = _interopRequireDefault(_stream);
-
- var _m3u8Parser = require('m3u8-parser');
-
- var _m3u8Parser2 = _interopRequireDefault(_m3u8Parser);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- /**
- * 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 overridden.
- *
- * @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 a list of merged segment objects
- */
- var updateSegments = function updateSegments(original, update, offset) {
- var result = update.slice();
- var length = undefined;
- var i = undefined;
-
- offset = offset || 0;
- length = Math.min(original.length, update.length + offset);
-
- for (i = offset; i < length; i++) {
- result[i - offset] = (0, _videoJs.mergeOptions)(original[i], result[i - offset]);
- }
- return result;
- };
-
- /**
- * Returns a new master 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 master playlist, null is returned.
- *
- * @param {Object} master a parsed master M3U8 object
- * @param {Object} media a parsed media M3U8 object
- * @return {Object} a new object that represents the original
- * master playlist with the updated media playlist merged in, or
- * null if the merge produced no change.
- */
- var updateMaster = function updateMaster(master, media) {
- var changed = false;
- var result = (0, _videoJs.mergeOptions)(master, {});
- var i = master.playlists.length;
- var playlist = undefined;
- var segment = undefined;
- var j = undefined;
-
- while (i--) {
- playlist = result.playlists[i];
- if (playlist.uri === media.uri) {
- // consider the playlist unchanged if the number of segments
- // are equal and the media sequence number is unchanged
- if (playlist.segments && media.segments && playlist.segments.length === media.segments.length && playlist.mediaSequence === media.mediaSequence) {
- continue;
- }
-
- result.playlists[i] = (0, _videoJs.mergeOptions)(playlist, media);
- result.playlists[media.uri] = result.playlists[i];
-
- // if the update could overlap existing segment information,
- // merge the two lists
- if (playlist.segments) {
- result.playlists[i].segments = updateSegments(playlist.segments, media.segments, media.mediaSequence - playlist.mediaSequence);
- }
- // resolve any missing segment and key URIs
- j = 0;
- if (result.playlists[i].segments) {
- j = result.playlists[i].segments.length;
- }
- while (j--) {
- segment = result.playlists[i].segments[j];
- if (!segment.resolvedUri) {
- segment.resolvedUri = (0, _resolveUrl2['default'])(playlist.resolvedUri, segment.uri);
- }
- if (segment.key && !segment.key.resolvedUri) {
- segment.key.resolvedUri = (0, _resolveUrl2['default'])(playlist.resolvedUri, segment.key.uri);
- }
- if (segment.map && !segment.map.resolvedUri) {
- segment.map.resolvedUri = (0, _resolveUrl2['default'])(playlist.resolvedUri, segment.map.uri);
- }
- }
- changed = true;
- }
- }
- return changed ? result : null;
- };
-
- /**
- * Load a playlist from a remote location
- *
- * @class PlaylistLoader
- * @extends Stream
- * @param {String} srcUrl the url to start with
- * @param {Boolean} withCredentials the withCredentials xhr option
- * @constructor
- */
- var PlaylistLoader = function PlaylistLoader(srcUrl, hls, withCredentials) {
- var _this = this;
-
- /* eslint-disable consistent-this */
- var loader = this;
- /* eslint-enable consistent-this */
- var dispose = undefined;
- var mediaUpdateTimeout = undefined;
- var request = undefined;
- var playlistRequestError = undefined;
- var haveMetadata = undefined;
-
- PlaylistLoader.prototype.constructor.call(this);
-
- this.hls_ = hls;
-
- if (!srcUrl) {
- throw new Error('A non-empty playlist URL is required');
- }
-
- playlistRequestError = function (xhr, url, startingState) {
- loader.setBandwidth(request || xhr);
-
- // any in-flight request is now finished
- request = null;
-
- if (startingState) {
- loader.state = startingState;
- }
-
- loader.error = {
- playlist: loader.master.playlists[url],
- status: xhr.status,
- message: 'HLS playlist request error at URL: ' + url,
- responseText: xhr.responseText,
- code: xhr.status >= 500 ? 4 : 2
- };
-
- loader.trigger('error');
- };
-
- // update the playlist loader's state in response to a new or
- // updated playlist.
- haveMetadata = function (xhr, url) {
- var parser = undefined;
- var refreshDelay = undefined;
- var update = undefined;
-
- loader.setBandwidth(request || xhr);
-
- // any in-flight request is now finished
- request = null;
-
- loader.state = 'HAVE_METADATA';
-
- parser = new _m3u8Parser2['default'].Parser();
- parser.push(xhr.responseText);
- parser.end();
- parser.manifest.uri = url;
-
- // merge this playlist into the master
- update = updateMaster(loader.master, parser.manifest);
- refreshDelay = (parser.manifest.targetDuration || 10) * 1000;
- loader.targetDuration = parser.manifest.targetDuration;
- if (update) {
- loader.master = update;
- loader.media_ = loader.master.playlists[parser.manifest.uri];
- } else {
- // if the playlist is unchanged since the last reload,
- // try again after half the target duration
- refreshDelay /= 2;
- loader.trigger('playlistunchanged');
- }
-
- // refresh live playlists after a target duration passes
- if (!loader.media().endList) {
- _globalWindow2['default'].clearTimeout(mediaUpdateTimeout);
- mediaUpdateTimeout = _globalWindow2['default'].setTimeout(function () {
- loader.trigger('mediaupdatetimeout');
- }, refreshDelay);
- }
-
- loader.trigger('loadedplaylist');
- };
-
- // initialize the loader state
- loader.state = 'HAVE_NOTHING';
-
- // capture the prototype dispose function
- dispose = this.dispose;
-
- /**
- * Abort any outstanding work and clean up.
- */
- loader.dispose = function () {
- loader.stopRequest();
- _globalWindow2['default'].clearTimeout(mediaUpdateTimeout);
- dispose.call(this);
- };
-
- loader.stopRequest = function () {
- if (request) {
- var oldRequest = request;
-
- request = null;
- oldRequest.onreadystatechange = null;
- oldRequest.abort();
- }
- };
-
- /**
- * Returns the number of enabled playlists on the master playlist object
- *
- * @return {Number} number of eneabled playlists
- */
- loader.enabledPlaylists_ = function () {
- return loader.master.playlists.filter(_playlistJs.isEnabled).length;
- };
-
- /**
- * Returns whether the current playlist is the lowest rendition
- *
- * @return {Boolean} true if on lowest rendition
- */
- loader.isLowestEnabledRendition_ = function () {
- if (loader.master.playlists.length === 1) {
- return true;
- }
-
- var media = loader.media();
-
- var currentBandwidth = media.attributes.BANDWIDTH || Number.MAX_VALUE;
-
- return loader.master.playlists.filter(function (playlist) {
- var enabled = (0, _playlistJs.isEnabled)(playlist);
-
- if (!enabled) {
- return false;
- }
-
- var bandwidth = 0;
-
- if (playlist && playlist.attributes) {
- bandwidth = playlist.attributes.BANDWIDTH;
- }
- return bandwidth < currentBandwidth;
- }).length === 0;
- };
-
- /**
- * Returns whether the current playlist is the final available rendition
- *
- * @return {Boolean} true if on final rendition
- */
- loader.isFinalRendition_ = function () {
- return loader.master.playlists.filter(_playlistJs.isEnabled).length === 1;
- };
-
- /**
- * 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
- * @return {Playlist} the current loaded media
- */
- loader.media = function (playlist) {
- var startingState = loader.state;
- var mediaChange = undefined;
-
- // getter
- if (!playlist) {
- return loader.media_;
- }
-
- // setter
- if (loader.state === 'HAVE_NOTHING') {
- throw new Error('Cannot switch media playlist from ' + loader.state);
- }
-
- // find the playlist object if the target playlist has been
- // specified by URI
- if (typeof playlist === 'string') {
- if (!loader.master.playlists[playlist]) {
- throw new Error('Unknown playlist URI: ' + playlist);
- }
- playlist = loader.master.playlists[playlist];
- }
-
- mediaChange = !loader.media_ || playlist.uri !== loader.media_.uri;
-
- // switch to fully loaded playlists immediately
- if (loader.master.playlists[playlist.uri].endList) {
- // abort outstanding playlist requests
- if (request) {
- request.onreadystatechange = null;
- request.abort();
- request = null;
- }
- loader.state = 'HAVE_METADATA';
- loader.media_ = playlist;
-
- // trigger media change if the active media has been updated
- if (mediaChange) {
- loader.trigger('mediachanging');
- loader.trigger('mediachange');
- }
- return;
- }
-
- // switching to the active playlist is a no-op
- if (!mediaChange) {
- return;
- }
-
- loader.state = 'SWITCHING_MEDIA';
-
- // there is already an outstanding playlist request
- if (request) {
- if ((0, _resolveUrl2['default'])(loader.master.uri, playlist.uri) === request.url) {
- // requesting to switch to the same playlist multiple times
- // has no effect after the first
- return;
- }
- request.onreadystatechange = null;
- request.abort();
- request = null;
- }
-
- // request the new playlist
- if (this.media_) {
- this.trigger('mediachanging');
- }
- request = this.hls_.xhr({
- uri: (0, _resolveUrl2['default'])(loader.master.uri, playlist.uri),
- withCredentials: withCredentials
- }, function (error, req) {
- // disposed
- if (!request) {
- return;
- }
-
- if (error) {
- return playlistRequestError(request, playlist.uri, startingState);
- }
-
- haveMetadata(req, playlist.uri);
-
- // fire loadedmetadata the first time a media playlist is loaded
- if (startingState === 'HAVE_MASTER') {
- loader.trigger('loadedmetadata');
- } else {
- loader.trigger('mediachange');
- }
- });
- };
-
- /**
- * set the bandwidth on an xhr to the bandwidth on the playlist
- */
- loader.setBandwidth = function (xhr) {
- loader.bandwidth = xhr.bandwidth;
- };
-
- // live playlist staleness timeout
- loader.on('mediaupdatetimeout', function () {
- if (loader.state !== 'HAVE_METADATA') {
- // only refresh the media playlist if no other activity is going on
- return;
- }
-
- loader.state = 'HAVE_CURRENT_METADATA';
- request = this.hls_.xhr({
- uri: (0, _resolveUrl2['default'])(loader.master.uri, loader.media().uri),
- withCredentials: withCredentials
- }, function (error, req) {
- // disposed
- if (!request) {
- return;
- }
-
- if (error) {
- return playlistRequestError(request, loader.media().uri, 'HAVE_METADATA');
- }
- haveMetadata(request, loader.media().uri);
- });
- });
-
- // setup initial sync info
- loader.on('firstplay', function () {
- var playlist = loader.media();
-
- if (playlist) {
- playlist.syncInfo = {
- mediaSequence: playlist.mediaSequence,
- time: 0
- };
- }
- });
-
- /**
- * pause loading of the playlist
- */
- loader.pause = function () {
- loader.stopRequest();
- _globalWindow2['default'].clearTimeout(mediaUpdateTimeout);
- if (loader.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.
- loader.started = false;
- }
- };
-
- /**
- * start loading of the playlist
- */
- loader.load = function (isFinalRendition) {
- var media = loader.media();
-
- _globalWindow2['default'].clearTimeout(mediaUpdateTimeout);
-
- if (isFinalRendition) {
- var refreshDelay = media ? media.targetDuration / 2 * 1000 : 5 * 1000;
-
- mediaUpdateTimeout = _globalWindow2['default'].setTimeout(loader.load.bind(null, false), refreshDelay);
- return;
- }
-
- if (!loader.started) {
- loader.start();
- return;
- }
-
- if (media && !media.endList) {
- loader.trigger('mediaupdatetimeout');
- } else {
- loader.trigger('loadedplaylist');
- }
- };
-
- /**
- * start loading of the playlist
- */
- loader.start = function () {
- loader.started = true;
-
- // request the specified URL
- request = _this.hls_.xhr({
- uri: srcUrl,
- withCredentials: withCredentials
- }, function (error, req) {
- var parser = undefined;
- var playlist = undefined;
- var i = undefined;
-
- // disposed
- if (!request) {
- return;
- }
-
- // clear the loader's request reference
- request = null;
-
- if (error) {
- loader.error = {
- status: req.status,
- message: 'HLS playlist request error at URL: ' + srcUrl,
- responseText: req.responseText,
- // MEDIA_ERR_NETWORK
- code: 2
- };
- if (loader.state === 'HAVE_NOTHING') {
- loader.started = false;
- }
- return loader.trigger('error');
- }
-
- parser = new _m3u8Parser2['default'].Parser();
- parser.push(req.responseText);
- parser.end();
-
- loader.state = 'HAVE_MASTER';
-
- parser.manifest.uri = srcUrl;
-
- // loaded a master playlist
- if (parser.manifest.playlists) {
- loader.master = parser.manifest;
-
- // setup by-URI lookups and resolve media playlist URIs
- i = loader.master.playlists.length;
- while (i--) {
- playlist = loader.master.playlists[i];
- loader.master.playlists[playlist.uri] = playlist;
- playlist.resolvedUri = (0, _resolveUrl2['default'])(loader.master.uri, playlist.uri);
- }
-
- // resolve any media group URIs
- ['AUDIO', 'SUBTITLES'].forEach(function (mediaType) {
- for (var groupKey in loader.master.mediaGroups[mediaType]) {
- for (var labelKey in loader.master.mediaGroups[mediaType][groupKey]) {
- var mediaProperties = loader.master.mediaGroups[mediaType][groupKey][labelKey];
-
- if (mediaProperties.uri) {
- mediaProperties.resolvedUri = (0, _resolveUrl2['default'])(loader.master.uri, mediaProperties.uri);
- }
- }
- }
- });
-
- loader.trigger('loadedplaylist');
- if (!request) {
- // no media playlist was specifically selected so start
- // from the first listed one
- loader.media(parser.manifest.playlists[0]);
- }
- return;
- }
-
- // loaded a media playlist
- // infer a master playlist if none was previously requested
- loader.master = {
- mediaGroups: {
- 'AUDIO': {},
- 'VIDEO': {},
- 'CLOSED-CAPTIONS': {},
- 'SUBTITLES': {}
- },
- uri: _globalWindow2['default'].location.href,
- playlists: [{
- uri: srcUrl
- }]
- };
- loader.master.playlists[srcUrl] = loader.master.playlists[0];
- loader.master.playlists[0].resolvedUri = srcUrl;
- haveMetadata(req, srcUrl);
- return loader.trigger('loadedmetadata');
- });
- };
- };
-
- PlaylistLoader.prototype = new _stream2['default']();
-
- exports['default'] = PlaylistLoader;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./playlist.js":9,"./resolve-url":13,"./stream":16,"global/window":30,"m3u8-parser":31}],9:[function(require,module,exports){
- (function (global){
- /**
- * @file playlist.js
- *
- * Playlist related utilities.
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var Playlist = {
- /**
- * The number of segments that are unsafe to start playback at in
- * a live stream. Changing this value can cause playback stalls.
- * See HTTP Live Streaming, "Playing the Media Playlist File"
- * https://tools.ietf.org/html/draft-pantos-http-live-streaming-18#section-6.3.3
- */
- UNSAFE_LIVE_SEGMENTS: 3
- };
-
- /**
- * 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
- */
-
- var backwardDuration = function backwardDuration(playlist, endSequence) {
- var result = 0;
- var i = endSequence - playlist.mediaSequence;
- // if a start time is available for segment immediately following
- // the interval, use it
- var 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 += segment.duration;
-
- if (typeof segment.start !== 'undefined') {
- return { result: result + segment.start, precise: true };
- }
- }
- return { result: 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
- */
- var forwardDuration = function forwardDuration(playlist, endSequence) {
- var result = 0;
- var segment = undefined;
- var 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 += segment.duration;
-
- 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.
- */
- var intervalDuration = function intervalDuration(playlist, endSequence, expired) {
- var backward = undefined;
- var forward = undefined;
-
- if (typeof endSequence === 'undefined') {
- endSequence = playlist.mediaSequence + playlist.segments.length;
- }
-
- if (endSequence < playlist.mediaSequence) {
- return 0;
- }
-
- // do a backward walk to estimate the duration
- 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
- 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.
- */
- var duration = function duration(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 _globalWindow2['default'].Infinity;
- }
- }
-
- // calculate the total duration based on the segment durations
- return intervalDuration(playlist, endSequence, expired);
- };
-
- exports.duration = duration;
- /**
- * 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 {Object} playlist a media playlist object
- * @param {Number} startIndex
- * @param {Number} endIndex
- * @return {Number} the number of seconds between startIndex and endIndex
- */
- var sumDurations = function sumDurations(playlist, startIndex, endIndex) {
- var durations = 0;
-
- if (startIndex > endIndex) {
- var _ref = [endIndex, startIndex];
- startIndex = _ref[0];
- endIndex = _ref[1];
- }
-
- if (startIndex < 0) {
- for (var i = startIndex; i < Math.min(0, endIndex); i++) {
- durations += playlist.targetDuration;
- }
- startIndex = 0;
- }
-
- for (var i = startIndex; i < endIndex; i++) {
- durations += playlist.segments[i].duration;
- }
-
- return durations;
- };
-
- exports.sumDurations = sumDurations;
- /**
- * Returns an array with two sync points. The first being an expired sync point, which is
- * the most recent segment with timing sync data that has fallen off the playlist. The
- * second is a segment sync point, which is the first segment that has timing sync data in
- * the current playlist.
- *
- * @param {Object} playlist a media playlist object
- * @returns {Object} an object containing the two sync points
- * @returns {Object.expiredSync|null} sync point data from an expired segment
- * @returns {Object.segmentSync|null} sync point data from a segment in the playlist
- * @function getPlaylistSyncPoints
- */
- var getPlaylistSyncPoints = function getPlaylistSyncPoints(playlist) {
- if (!playlist || !playlist.segments) {
- return [null, null];
- }
- var expiredSync = playlist.syncInfo || (playlist.endList ? { time: 0, mediaSequence: 0 } : null);
- var segmentSync = null;
-
- // Find the first segment with timing information
- for (var i = 0, l = playlist.segments.length; i < l; i++) {
- var segment = playlist.segments[i];
-
- if (typeof segment.start !== 'undefined') {
- segmentSync = {
- mediaSequence: playlist.mediaSequence + i,
- time: segment.start
- };
- break;
- }
- }
-
- return { expiredSync: expiredSync, segmentSync: segmentSync };
- };
-
- /**
- * Calculates the amount of time expired from the playlist based on the provided
- * sync points.
- *
- * @param {Object} playlist a media playlist object
- * @param {Object|null} expiredSync sync point representing most recent segment with
- * timing sync data that has fallen off the playlist
- * @param {Object|null} segmentSync sync point representing the first segment that has
- * timing sync data in the playlist
- * @returns {Number} the amount of time expired from the playlist
- * @function calculateExpiredTime
- */
- var calculateExpiredTime = function calculateExpiredTime(playlist) {
- // If we have both an expired sync point and a segment sync point
- // determine which sync point is closest to the start of the playlist
- // so the minimal amount of timing estimation is done.
-
- var _getPlaylistSyncPoints = getPlaylistSyncPoints(playlist);
-
- var expiredSync = _getPlaylistSyncPoints.expiredSync;
- var segmentSync = _getPlaylistSyncPoints.segmentSync;
-
- if (expiredSync && segmentSync) {
- var expiredDiff = expiredSync.mediaSequence - playlist.mediaSequence;
- var segmentDiff = segmentSync.mediaSequence - playlist.mediaSequence;
- var syncIndex = undefined;
- var syncTime = undefined;
-
- if (Math.abs(expiredDiff) > Math.abs(segmentDiff)) {
- syncIndex = segmentDiff;
- syncTime = -segmentSync.time;
- } else {
- syncIndex = expiredDiff;
- syncTime = expiredSync.time;
- }
-
- return Math.abs(syncTime + sumDurations(playlist, syncIndex, 0));
- }
-
- // We only have an expired sync point, so base expired time on the expired sync point
- // and estimate the time from that sync point to the start of the playlist.
- if (expiredSync) {
- var syncIndex = expiredSync.mediaSequence - playlist.mediaSequence;
-
- return expiredSync.time + sumDurations(playlist, syncIndex, 0);
- }
-
- // We only have a segment sync point, so base expired time on the first segment we have
- // sync point data for and estimate the time from that media index to the start of the
- // playlist.
- if (segmentSync) {
- var syncIndex = segmentSync.mediaSequence - playlist.mediaSequence;
-
- return segmentSync.time - sumDurations(playlist, syncIndex, 0);
- }
- return null;
- };
-
- /**
- * Calculates the playlist end time
- *
- * @param {Object} playlist a media playlist object
- * @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.
- * @returns {Number} the end time of playlist
- * @function playlistEnd
- */
- var playlistEnd = function playlistEnd(playlist, useSafeLiveEnd) {
- if (!playlist || !playlist.segments) {
- return null;
- }
- if (playlist.endList) {
- return duration(playlist);
- }
- var expired = calculateExpiredTime(playlist);
-
- if (expired === null) {
- return null;
- }
- var endSequence = useSafeLiveEnd ? Math.max(0, playlist.segments.length - Playlist.UNSAFE_LIVE_SEGMENTS) : Math.max(0, playlist.segments.length);
-
- return intervalDuration(playlist, playlist.mediaSequence + endSequence, expired);
- };
-
- exports.playlistEnd = playlistEnd;
- /**
- * 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
- * @return {TimeRanges} the periods of time that are valid targets
- * for seeking
- */
- var seekable = function seekable(playlist) {
- var useSafeLiveEnd = true;
- var seekableStart = calculateExpiredTime(playlist);
- var seekableEnd = playlistEnd(playlist, useSafeLiveEnd);
-
- if (seekableEnd === null) {
- return (0, _videoJs.createTimeRange)();
- }
- return (0, _videoJs.createTimeRange)(seekableStart, seekableEnd);
- };
-
- exports.seekable = seekable;
- var isWholeNumber = function isWholeNumber(num) {
- return num - Math.floor(num) === 0;
- };
-
- var roundSignificantDigit = function roundSignificantDigit(increment, num) {
- // If we have a whole number, just add 1 to it
- if (isWholeNumber(num)) {
- return num + increment * 0.1;
- }
-
- var numDecimalDigits = num.toString().split('.')[1].length;
-
- for (var i = 1; i <= numDecimalDigits; i++) {
- var scale = Math.pow(10, i);
- var temp = num * scale;
-
- if (isWholeNumber(temp) || i === numDecimalDigits) {
- return (temp + increment) / scale;
- }
- }
- };
-
- var ceilLeastSignificantDigit = roundSignificantDigit.bind(null, 1);
- var floorLeastSignificantDigit = roundSignificantDigit.bind(null, -1);
-
- /**
- * Determine the index and estimated starting time of the segment that
- * contains a specified playback position in a media playlist.
- *
- * @param {Object} playlist the media playlist to query
- * @param {Number} currentTime The number of seconds since the earliest
- * possible position to determine the containing segment for
- * @param {Number} startIndex
- * @param {Number} startTime
- * @return {Object}
- */
- var getMediaInfoForTime_ = function getMediaInfoForTime_(playlist, currentTime, startIndex, startTime) {
- var i = undefined;
- var segment = undefined;
- var numSegments = playlist.segments.length;
-
- var time = currentTime - startTime;
-
- 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 (i = startIndex - 1; i >= 0; i--) {
- segment = playlist.segments[i];
- time += floorLeastSignificantDigit(segment.duration);
- if (time > 0) {
- return {
- mediaIndex: i,
- startTime: startTime - sumDurations(playlist, startIndex, i)
- };
- }
- }
- }
- // We were unable to find a good segment within the playlist
- // so select the first segment
- return {
- mediaIndex: 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 (i = startIndex; i < 0; i++) {
- time -= playlist.targetDuration;
- if (time < 0) {
- return {
- mediaIndex: 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 (i = startIndex; i < numSegments; i++) {
- segment = playlist.segments[i];
- time -= ceilLeastSignificantDigit(segment.duration);
- if (time < 0) {
- return {
- mediaIndex: i,
- startTime: startTime + sumDurations(playlist, startIndex, i)
- };
- }
- }
-
- // We are out of possible candidates so load the last one...
- return {
- mediaIndex: numSegments - 1,
- startTime: currentTime
- };
- };
-
- exports.getMediaInfoForTime_ = getMediaInfoForTime_;
- /**
- * Check whether the playlist is blacklisted or not.
- *
- * @param {Object} playlist the media playlist object
- * @return {boolean} whether the playlist is blacklisted or not
- * @function isBlacklisted
- */
- var isBlacklisted = function isBlacklisted(playlist) {
- return playlist.excludeUntil && playlist.excludeUntil > Date.now();
- };
-
- exports.isBlacklisted = isBlacklisted;
- /**
- * 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
- */
- var isEnabled = function isEnabled(playlist) {
- var blacklisted = isBlacklisted(playlist);
-
- return !playlist.disabled && !blacklisted;
- };
-
- exports.isEnabled = isEnabled;
- Playlist.duration = duration;
- Playlist.seekable = seekable;
- Playlist.getMediaInfoForTime_ = getMediaInfoForTime_;
- Playlist.isEnabled = isEnabled;
- Playlist.isBlacklisted = isBlacklisted;
- Playlist.playlistEnd = playlistEnd;
-
- // exports
- exports['default'] = Playlist;
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"global/window":30}],10:[function(require,module,exports){
- (function (global){
- /**
- * ranges
- *
- * Utilities for working with TimeRanges.
- *
- */
-
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _slicedToArray = (function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i['return']) _i['return'](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError('Invalid attempt to destructure non-iterable instance'); } }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- // Fudge factor to account for TimeRanges rounding
- var TIME_FUDGE_FACTOR = 1 / 30;
-
- /**
- * Clamps a value to within a range
- * @param {Number} num - the value to clamp
- * @param {Number} start - the start of the range to clamp within, inclusive
- * @param {Number} end - the end of the range to clamp within, inclusive
- * @return {Number}
- */
- var clamp = function clamp(num, _ref) {
- var _ref2 = _slicedToArray(_ref, 2);
-
- var start = _ref2[0];
- var end = _ref2[1];
-
- return Math.min(Math.max(start, num), end);
- };
- var filterRanges = function filterRanges(timeRanges, predicate) {
- var results = [];
- var i = undefined;
-
- 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 _videoJs2['default'].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.
- * @returns {TimeRanges} a new TimeRanges object
- */
- var findRange = function findRange(buffered, time) {
- return filterRanges(buffered, function (start, end) {
- return start - TIME_FUDGE_FACTOR <= time && end + TIME_FUDGE_FACTOR >= 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.
- * @returns {TimeRanges} a new TimeRanges object.
- */
- var findNextRange = function findNextRange(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
- */
- var findGaps = function findGaps(buffered) {
- if (buffered.length < 2) {
- return _videoJs2['default'].createTimeRanges();
- }
-
- var ranges = [];
-
- for (var i = 1; i < buffered.length; i++) {
- var start = buffered.end(i - 1);
- var end = buffered.start(i);
-
- ranges.push([start, end]);
- }
-
- return _videoJs2['default'].createTimeRanges(ranges);
- };
-
- /**
- * Search for a likely end time for the segment that was just appened
- * based on the state of the `buffered` property before and after the
- * append. If we fin only one such uncommon end-point return it.
- * @param {TimeRanges} original - the buffered time ranges before the update
- * @param {TimeRanges} update - the buffered time ranges after the update
- * @returns {Number|null} the end time added between `original` and `update`,
- * or null if one cannot be unambiguously determined.
- */
- var findSoleUncommonTimeRangesEnd = function findSoleUncommonTimeRangesEnd(original, update) {
- var i = undefined;
- var start = undefined;
- var end = undefined;
- var result = [];
- var edges = [];
-
- // In order to qualify as a possible candidate, the end point must:
- // 1) Not have already existed in the `original` ranges
- // 2) Not result from the shrinking of a range that already existed
- // in the `original` ranges
- // 3) Not be contained inside of a range that existed in `original`
- var overlapsCurrentEnd = function overlapsCurrentEnd(span) {
- return span[0] <= end && span[1] >= end;
- };
-
- if (original) {
- // Save all the edges in the `original` TimeRanges object
- for (i = 0; i < original.length; i++) {
- start = original.start(i);
- end = original.end(i);
-
- edges.push([start, end]);
- }
- }
-
- if (update) {
- // Save any end-points in `update` that are not in the `original`
- // TimeRanges object
- for (i = 0; i < update.length; i++) {
- start = update.start(i);
- end = update.end(i);
-
- if (edges.some(overlapsCurrentEnd)) {
- continue;
- }
-
- // at this point it must be a unique non-shrinking end edge
- result.push(end);
- }
- }
-
- // we err on the side of caution and return null if didn't find
- // exactly *one* differing end edge in the search above
- if (result.length !== 1) {
- return null;
- }
-
- return result[0];
- };
-
- /**
- * Calculate the intersection of two TimeRanges
- * @param {TimeRanges} bufferA
- * @param {TimeRanges} bufferB
- * @returns {TimeRanges} The interesection of `bufferA` with `bufferB`
- */
- var bufferIntersection = function bufferIntersection(bufferA, bufferB) {
- var start = null;
- var end = null;
- var arity = 0;
- var extents = [];
- var ranges = [];
-
- if (!bufferA || !bufferA.length || !bufferB || !bufferB.length) {
- return _videoJs2['default'].createTimeRange();
- }
-
- // Handle the case where we have both buffers and create an
- // intersection of the two
- var 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 _videoJs2['default'].createTimeRanges(ranges);
- };
-
- /**
- * Calculates the percentage of `segmentRange` that overlaps the
- * `buffered` time ranges.
- * @param {TimeRanges} segmentRange - the time range that the segment
- * covers adjusted according to currentTime
- * @param {TimeRanges} referenceRange - the original time range that the
- * segment covers
- * @param {Number} currentTime - time in seconds where the current playback
- * is at
- * @param {TimeRanges} buffered - the currently buffered time ranges
- * @returns {Number} percent of the segment currently buffered
- */
- var calculateBufferedPercent = function calculateBufferedPercent(adjustedRange, referenceRange, currentTime, buffered) {
- var referenceDuration = referenceRange.end(0) - referenceRange.start(0);
- var adjustedDuration = adjustedRange.end(0) - adjustedRange.start(0);
- var bufferMissingFromAdjusted = referenceDuration - adjustedDuration;
- var adjustedIntersection = bufferIntersection(adjustedRange, buffered);
- var referenceIntersection = bufferIntersection(referenceRange, buffered);
- var adjustedOverlap = 0;
- var referenceOverlap = 0;
-
- var count = adjustedIntersection.length;
-
- while (count--) {
- adjustedOverlap += adjustedIntersection.end(count) - adjustedIntersection.start(count);
-
- // If the current overlap segment starts at currentTime, then increase the
- // overlap duration so that it actually starts at the beginning of referenceRange
- // by including the difference between the two Range's durations
- // This is a work around for the way Flash has no buffer before currentTime
- if (adjustedIntersection.start(count) === currentTime) {
- adjustedOverlap += bufferMissingFromAdjusted;
- }
- }
-
- count = referenceIntersection.length;
-
- while (count--) {
- referenceOverlap += referenceIntersection.end(count) - referenceIntersection.start(count);
- }
-
- // Use whichever value is larger for the percentage-buffered since that value
- // is likely more accurate because the only way
- return Math.max(adjustedOverlap, referenceOverlap) / referenceDuration * 100;
- };
-
- /**
- * Return the amount of a range specified by the startOfSegment and segmentDuration
- * overlaps the current buffered content.
- *
- * @param {Number} startOfSegment - the time where the segment begins
- * @param {Number} segmentDuration - the duration of the segment in seconds
- * @param {Number} currentTime - time in seconds where the current playback
- * is at
- * @param {TimeRanges} buffered - the state of the buffer
- * @returns {Number} percentage of the segment's time range that is
- * already in `buffered`
- */
- var getSegmentBufferedPercent = function getSegmentBufferedPercent(startOfSegment, segmentDuration, currentTime, buffered) {
- var endOfSegment = startOfSegment + segmentDuration;
-
- // The entire time range of the segment
- var originalSegmentRange = _videoJs2['default'].createTimeRanges([[startOfSegment, endOfSegment]]);
-
- // The adjusted segment time range that is setup such that it starts
- // no earlier than currentTime
- // Flash has no notion of a back-buffer so adjustedSegmentRange adjusts
- // for that and the function will still return 100% if a only half of a
- // segment is actually in the buffer as long as the currentTime is also
- // half-way through the segment
- var adjustedSegmentRange = _videoJs2['default'].createTimeRanges([[clamp(startOfSegment, [currentTime, endOfSegment]), endOfSegment]]);
-
- // This condition happens when the currentTime is beyond the segment's
- // end time
- if (adjustedSegmentRange.start(0) === adjustedSegmentRange.end(0)) {
- return 0;
- }
-
- var percent = calculateBufferedPercent(adjustedSegmentRange, originalSegmentRange, currentTime, buffered);
-
- // If the segment is reported as having a zero duration, return 0%
- // since it is likely that we will need to fetch the segment
- if (isNaN(percent) || percent === Infinity || percent === -Infinity) {
- return 0;
- }
-
- return percent;
- };
-
- /**
- * Gets a human readable string for a TimeRange
- *
- * @param {TimeRange} range
- * @returns {String} a human readable string
- */
- var printableRange = function printableRange(range) {
- var strArr = [];
-
- if (!range || !range.length) {
- return '';
- }
-
- for (var i = 0; i < range.length; i++) {
- strArr.push(range.start(i) + ' => ' + range.end(i));
- }
-
- return strArr.join(', ');
- };
-
- exports['default'] = {
- findRange: findRange,
- findNextRange: findNextRange,
- findGaps: findGaps,
- findSoleUncommonTimeRangesEnd: findSoleUncommonTimeRangesEnd,
- getSegmentBufferedPercent: getSegmentBufferedPercent,
- TIME_FUDGE_FACTOR: TIME_FUDGE_FACTOR,
- printableRange: printableRange
- };
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{}],11:[function(require,module,exports){
- (function (global){
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var defaultOptions = {
- errorInterval: 30,
- getSource: function getSource(next) {
- var tech = this.tech({ IWillNotUseThisInPlugins: true });
- var sourceObj = tech.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
- */
- var initPlugin = function initPlugin(player, options) {
- var lastCalled = 0;
- var seekTo = 0;
- var localOptions = _videoJs2['default'].mergeOptions(defaultOptions, options);
-
- /**
- * Player modifications to perform that must wait until `loadedmetadata`
- * has been triggered
- *
- * @private
- */
- var loadedMetadataHandler = function loadedMetadataHandler() {
- 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
- */
- var setSource = function setSource(sourceObj) {
- if (sourceObj === null || sourceObj === undefined) {
- return;
- }
- seekTo = player.duration() !== Infinity && player.currentTime() || 0;
-
- player.one('loadedmetadata', loadedMetadataHandler);
-
- player.src(sourceObj);
- player.play();
- };
-
- /**
- * Attempt to get a source from either the built-in getSource function
- * or a custom function provided via the options
- *
- * @private
- */
- var errorHandler = function errorHandler() {
- // 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) {
- return;
- }
-
- if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {
- _videoJs2['default'].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
- */
- var cleanupEvents = function cleanupEvents() {
- 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
- */
- var reinitPlugin = function reinitPlugin(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
- */
- var reloadSourceOnError = function reloadSourceOnError(options) {
- initPlugin(this, options);
- };
-
- exports['default'] = reloadSourceOnError;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{}],12:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _playlistJs = require('./playlist.js');
-
- /**
- * Enable/disable playlist function. It is intended to have the first two
- * arguments partially-applied in order to create the final per-playlist
- * function.
- *
- * @param {PlaylistLoader} playlist - The rendition or media-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 {Boolean} The current enabled-state of the playlist
- */
- var enableFunction = function enableFunction(loader, playlistUri, changePlaylistFn, enable) {
- var playlist = loader.master.playlists[playlistUri];
- var blacklisted = (0, _playlistJs.isBlacklisted)(playlist);
- var currentlyEnabled = (0, _playlistJs.isEnabled)(playlist);
-
- if (typeof enable === 'undefined') {
- return currentlyEnabled;
- }
-
- if (enable) {
- delete playlist.disabled;
- } else {
- playlist.disabled = true;
- }
-
- if (enable !== currentlyEnabled && !blacklisted) {
- // Ensure the outside world knows about our changes
- changePlaylistFn();
- }
-
- 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
- */
-
- var Representation = function Representation(hlsHandler, playlist, id) {
- _classCallCheck(this, Representation);
-
- // Get a reference to a bound version of fastQualityChange_
- var fastChangeFunction = hlsHandler.masterPlaylistController_.fastQualityChange_.bind(hlsHandler.masterPlaylistController_);
-
- // Carefully descend into the playlist's attributes since most
- // properties are optional
- if (playlist.attributes) {
- var attributes = playlist.attributes;
-
- if (attributes.RESOLUTION) {
- var resolution = attributes.RESOLUTION;
-
- this.width = resolution.width;
- this.height = resolution.height;
- }
-
- this.bandwidth = attributes.BANDWIDTH;
- }
-
- // The id is simply the ordinality of the media playlist
- // within the master playlist
- this.id = id;
-
- // Partially-apply the enableFunction to create a playlist-
- // specific variant
- this.enabled = enableFunction.bind(this, hlsHandler.playlists, playlist.uri, fastChangeFunction);
- }
-
- /**
- * A mixin function that adds the `representations` api to an instance
- * of the HlsHandler class
- * @param {HlsHandler} hlsHandler - An instance of HlsHandler to add the
- * representation API into
- */
- ;
-
- var renditionSelectionMixin = function renditionSelectionMixin(hlsHandler) {
- var playlists = hlsHandler.playlists;
-
- // Add a single API-specific function to the HlsHandler instance
- hlsHandler.representations = function () {
- return playlists.master.playlists.filter(function (media) {
- return !(0, _playlistJs.isBlacklisted)(media);
- }).map(function (e, i) {
- return new Representation(hlsHandler, e, e.uri);
- });
- };
- };
-
- exports['default'] = renditionSelectionMixin;
- module.exports = exports['default'];
- },{"./playlist.js":9}],13:[function(require,module,exports){
- /**
- * @file resolve-url.js
- */
-
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _urlToolkit = require('url-toolkit');
-
- var _urlToolkit2 = _interopRequireDefault(_urlToolkit);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var resolveUrl = function resolveUrl(baseURL, relativeURL) {
- // return early if we don't need to resolve
- if (/^[a-z]+:/i.test(relativeURL)) {
- return relativeURL;
- }
-
- // if the base URL is relative then combine with the current location
- if (!/\/\//i.test(baseURL)) {
- baseURL = _urlToolkit2['default'].buildAbsoluteURL(_globalWindow2['default'].location.href, baseURL);
- }
-
- return _urlToolkit2['default'].buildAbsoluteURL(baseURL, relativeURL);
- };
-
- exports['default'] = resolveUrl;
- module.exports = exports['default'];
- },{"global/window":30,"url-toolkit":61}],14:[function(require,module,exports){
- (function (global){
- /**
- * @file segment-loader.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x3, _x4, _x5) { var _again = true; _function: while (_again) { var object = _x3, property = _x4, receiver = _x5; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x3 = parent; _x4 = property; _x5 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _playlist = require('./playlist');
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _sourceUpdater = require('./source-updater');
-
- var _sourceUpdater2 = _interopRequireDefault(_sourceUpdater);
-
- var _config = require('./config');
-
- var _config2 = _interopRequireDefault(_config);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs = require('videojs-contrib-media-sources/es5/remove-cues-from-track.js');
-
- var _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs2 = _interopRequireDefault(_videojsContribMediaSourcesEs5RemoveCuesFromTrackJs);
-
- var _binUtils = require('./bin-utils');
-
- var _mediaSegmentRequest = require('./media-segment-request');
-
- // in ms
- var CHECK_BUFFER_DELAY = 500;
-
- /**
- * 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 {Object} playlist a media playlist object
- * @param {Object} mediaSource the MediaSource object
- * @param {Number} segmentIndex the index of segment we last appended
- * @returns {Boolean} do we need to call endOfStream on the MediaSource
- */
- var detectEndOfStream = function detectEndOfStream(playlist, mediaSource, segmentIndex) {
- if (!playlist || !mediaSource) {
- return false;
- }
-
- var segments = playlist.segments;
-
- // determine a few boolean values to help make the branch below easier
- // to read
- var appendedLastSegment = segmentIndex === segments.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 && mediaSource.readyState === 'open' && appendedLastSegment;
- };
-
- /**
- * An object that manages segment loading and appending.
- *
- * @class SegmentLoader
- * @param {Object} options required and optional options
- * @extends videojs.EventTarget
- */
-
- var SegmentLoader = (function (_videojs$EventTarget) {
- _inherits(SegmentLoader, _videojs$EventTarget);
-
- function SegmentLoader(options) {
- var _this = this;
-
- _classCallCheck(this, SegmentLoader);
-
- _get(Object.getPrototypeOf(SegmentLoader.prototype), 'constructor', this).call(this);
- // check pre-conditions
- if (!options) {
- throw new TypeError('Initialization options are required');
- }
- if (typeof options.currentTime !== 'function') {
- throw new TypeError('No currentTime getter specified');
- }
- if (!options.mediaSource) {
- throw new TypeError('No MediaSource specified');
- }
- var settings = _videoJs2['default'].mergeOptions(_videoJs2['default'].options.hls, options);
-
- // public properties
- this.state = 'INIT';
- this.bandwidth = settings.bandwidth;
- this.throughput = { rate: 0, count: 0 };
- this.roundTrip = NaN;
- this.resetStats_();
- this.mediaIndex = 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.hls_ = settings.hls;
- this.loaderType_ = settings.loaderType;
- this.segmentMetadataTrack_ = settings.segmentMetadataTrack;
-
- // private instance variables
- this.checkBufferTimeout_ = null;
- this.error_ = void 0;
- this.currentTimeline_ = -1;
- this.pendingSegment_ = null;
- this.mimeType_ = null;
- this.sourceUpdater_ = null;
- this.xhrOptions_ = null;
-
- // Fragmented mp4 playback
- this.activeInitSegmentId_ = null;
- this.initSegments_ = {};
-
- 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.syncController_.on('syncinfoupdate', function () {
- return _this.trigger('syncinfoupdate');
- });
-
- // ...for determining the fetch location
- this.fetchAtBuffer_ = false;
-
- if (settings.debug) {
- this.logger_ = _videoJs2['default'].log.bind(_videoJs2['default'], 'segment-loader', this.loaderType_, '->');
- }
- }
-
- /**
- * reset all of our media stats
- *
- * @private
- */
-
- _createClass(SegmentLoader, [{
- key: 'resetStats_',
- value: function resetStats_() {
- this.mediaBytesTransferred = 0;
- this.mediaRequests = 0;
- this.mediaRequestsAborted = 0;
- this.mediaRequestsTimedout = 0;
- this.mediaRequestsErrored = 0;
- this.mediaTransferDuration = 0;
- this.mediaSecondsLoaded = 0;
- }
-
- /**
- * dispose of the SegmentLoader and reset to the default state
- */
- }, {
- key: 'dispose',
- value: function dispose() {
- this.state = 'DISPOSED';
- this.abort_();
- if (this.sourceUpdater_) {
- this.sourceUpdater_.dispose();
- }
- this.resetStats_();
- }
-
- /**
- * abort anything that is currently doing on with the SegmentLoader
- * and reset to a default state
- */
- }, {
- key: 'abort',
- value: function abort() {
- if (this.state !== 'WAITING') {
- if (this.pendingSegment_) {
- this.pendingSegment_ = null;
- }
- return;
- }
-
- this.abort_();
-
- // don't wait for buffer check timeouts to begin fetching the
- // next segment
- if (!this.paused()) {
- this.state = 'READY';
- this.monitorBuffer_();
- }
- }
-
- /**
- * abort all pending xhr requests and null any pending segements
- *
- * @private
- */
- }, {
- key: 'abort_',
- value: function abort_() {
- if (this.pendingSegment_) {
- this.pendingSegment_.abortRequests();
- }
-
- // clear out the segment being processed
- this.pendingSegment_ = null;
- }
-
- /**
- * 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
- */
- }, {
- key: 'error',
- value: function error(_error) {
- if (typeof _error !== 'undefined') {
- this.error_ = _error;
- }
-
- this.pendingSegment_ = null;
- return this.error_;
- }
-
- /**
- * Indicates which time ranges are buffered
- *
- * @return {TimeRange}
- * TimeRange object representing the current buffered ranges
- */
- }, {
- key: 'buffered_',
- value: function buffered_() {
- if (!this.sourceUpdater_) {
- return _videoJs2['default'].createTimeRanges();
- }
-
- return this.sourceUpdater_.buffered();
- }
-
- /**
- * 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
- */
- }, {
- key: 'initSegment',
- value: function initSegment(map) {
- var set = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];
-
- if (!map) {
- return null;
- }
-
- var id = (0, _binUtils.initSegmentId)(map);
- var storedMap = this.initSegments_[id];
-
- if (set && !storedMap && map.bytes) {
- this.initSegments_[id] = storedMap = {
- resolvedUri: map.resolvedUri,
- byterange: map.byterange,
- bytes: map.bytes
- };
- }
-
- 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
- */
- }, {
- key: 'couldBeginLoading_',
- value: function couldBeginLoading_() {
- return this.playlist_ && (
- // the source updater is created when init_ is called, so either having a
- // source updater or being in the INIT state with a mimeType is enough
- // to say we have all the needed configuration to start loading.
- this.sourceUpdater_ || this.mimeType_ && this.state === 'INIT') && !this.paused();
- }
-
- /**
- * load a playlist and start to fill the buffer
- */
- }, {
- key: 'load',
- value: function load() {
- // un-pause
- this.monitorBuffer_();
-
- // if we don't have a playlist yet, keep waiting for one to be
- // specified
- if (!this.playlist_) {
- return;
- }
-
- // not sure if this is the best place for this
- this.syncController_.setDateTimeMapping(this.playlist_);
-
- // 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
- */
- }, {
- key: 'init_',
- value: function init_() {
- this.state = 'READY';
- this.sourceUpdater_ = new _sourceUpdater2['default'](this.mediaSource_, this.mimeType_);
- this.resetEverything();
- return this.monitorBuffer_();
- }
-
- /**
- * set a playlist on the segment loader
- *
- * @param {PlaylistLoader} media the playlist to set on the segment loader
- */
- }, {
- key: 'playlist',
- value: function playlist(newPlaylist) {
- var options = arguments.length <= 1 || arguments[1] === undefined ? {} : arguments[1];
-
- if (!newPlaylist) {
- return;
- }
-
- var oldPlaylist = this.playlist_;
- var 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
- if (!this.hasPlayed_()) {
- newPlaylist.syncInfo = {
- mediaSequence: newPlaylist.mediaSequence,
- time: 0
- };
- }
-
- // 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 "resync" the segment loader when we switch renditions and
- // the segment loader is already synced to the previous rendition
- this.resyncLoader();
- }
-
- // 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
- var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;
-
- this.logger_('mediaSequenceDiff', 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;
- }
-
- // update the mediaIndex on the SegmentInfo object
- // this is important because we will update this.mediaIndex with this value
- // in `handleUpdateEnd_` after the segment has been successfully appended
- if (segmentInfo) {
- segmentInfo.mediaIndex -= mediaSequenceDiff;
-
- // 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];
- }
- }
-
- 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().
- */
- }, {
- key: 'pause',
- value: function pause() {
- if (this.checkBufferTimeout_) {
- _globalWindow2['default'].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().
- */
- }, {
- key: 'paused',
- value: function paused() {
- return this.checkBufferTimeout_ === null;
- }
-
- /**
- * create/set the following mimetype on the SourceBuffer through a
- * SourceUpdater
- *
- * @param {String} mimeType the mime type string to use
- */
- }, {
- key: 'mimeType',
- value: function mimeType(_mimeType) {
- if (this.mimeType_) {
- return;
- }
-
- this.mimeType_ = _mimeType;
- // if we were unpaused but waiting for a sourceUpdater, start
- // buffering now
- if (this.state === 'INIT' && this.couldBeginLoading_()) {
- this.init_();
- }
- }
-
- /**
- * Delete all the buffered data and reset the SegmentLoader
- */
- }, {
- key: 'resetEverything',
- value: function resetEverything() {
- this.resetLoader();
- this.remove(0, Infinity);
- }
-
- /**
- * 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
- */
- }, {
- key: 'resetLoader',
- value: function resetLoader() {
- this.fetchAtBuffer_ = false;
- this.resyncLoader();
- }
-
- /**
- * Force the SegmentLoader to restart synchronization and make a conservative guess
- * before returning to the simple walk-forward method
- */
- }, {
- key: 'resyncLoader',
- value: function resyncLoader() {
- this.mediaIndex = null;
- this.syncPoint_ = null;
- }
-
- /**
- * 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
- */
- }, {
- key: 'remove',
- value: function remove(start, end) {
- if (this.sourceUpdater_) {
- this.sourceUpdater_.remove(start, end);
- }
- (0, _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs2['default'])(start, end, this.segmentMetadataTrack_);
- }
-
- /**
- * (re-)schedule monitorBufferTick_ to run as soon as possible
- *
- * @private
- */
- }, {
- key: 'monitorBuffer_',
- value: function monitorBuffer_() {
- if (this.checkBufferTimeout_) {
- _globalWindow2['default'].clearTimeout(this.checkBufferTimeout_);
- }
-
- this.checkBufferTimeout_ = _globalWindow2['default'].setTimeout(this.monitorBufferTick_.bind(this), 1);
- }
-
- /**
- * As long as the SegmentLoader is in the READY state, periodically
- * invoke fillBuffer_().
- *
- * @private
- */
- }, {
- key: 'monitorBufferTick_',
- value: function monitorBufferTick_() {
- if (this.state === 'READY') {
- this.fillBuffer_();
- }
-
- if (this.checkBufferTimeout_) {
- _globalWindow2['default'].clearTimeout(this.checkBufferTimeout_);
- }
-
- this.checkBufferTimeout_ = _globalWindow2['default'].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
- */
- }, {
- key: 'fillBuffer_',
- value: function fillBuffer_() {
- if (this.sourceUpdater_.updating()) {
- return;
- }
-
- if (!this.syncPoint_) {
- this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());
- }
-
- // see if we need to begin loading immediately
- var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_);
-
- if (!segmentInfo) {
- return;
- }
-
- var isEndOfStream = detectEndOfStream(this.playlist_, this.mediaSource_, segmentInfo.mediaIndex);
-
- if (isEndOfStream) {
- this.mediaSource_.endOfStream();
- return;
- }
-
- if (segmentInfo.mediaIndex === this.playlist_.segments.length - 1 && this.mediaSource_.readyState === 'ended' && !this.seeking_()) {
- return;
- }
-
- // We will need to change timestampOffset of the sourceBuffer if either of
- // the following conditions are true:
- // - The segment.timeline !== this.currentTimeline
- // (we are crossing a discontinuity somehow)
- // - The "timestampOffset" for the start of this segment is less than
- // the currently set timestampOffset
- if (segmentInfo.timeline !== this.currentTimeline_ || segmentInfo.startOfSegment !== null && segmentInfo.startOfSegment < this.sourceUpdater_.timestampOffset()) {
- this.syncController_.reset();
- segmentInfo.timestampOffset = segmentInfo.startOfSegment;
- }
-
- this.loadSegment_(segmentInfo);
- }
-
- /**
- * Determines what segment request should be made, given current playback
- * state.
- *
- * @param {TimeRanges} buffered - the state of the buffer
- * @param {Object} playlist - the playlist object to fetch segments from
- * @param {Number} mediaIndex - the previous mediaIndex fetched or null
- * @param {Boolean} hasPlayed - a flag indicating whether we have played or not
- * @param {Number} currentTime - the playback position in seconds
- * @param {Object} syncPoint - a segment info object that describes the
- * @returns {Object} a segment request object that describes the segment to load
- */
- }, {
- key: 'checkBuffer_',
- value: function checkBuffer_(buffered, playlist, mediaIndex, hasPlayed, currentTime, syncPoint) {
- var lastBufferedEnd = 0;
- var startOfSegment = undefined;
-
- if (buffered.length) {
- lastBufferedEnd = buffered.end(buffered.length - 1);
- }
-
- var bufferedTime = Math.max(0, lastBufferedEnd - currentTime);
-
- if (!playlist.segments.length) {
- return null;
- }
-
- // if there is plenty of content buffered, and the video has
- // been played before relax for awhile
- if (bufferedTime >= _config2['default'].GOAL_BUFFER_LENGTH) {
- return null;
- }
-
- // if the video has not yet played once, and we already have
- // one segment downloaded do nothing
- if (!hasPlayed && bufferedTime >= 1) {
- return null;
- }
-
- this.logger_('checkBuffer_', 'mediaIndex:', mediaIndex, 'hasPlayed:', hasPlayed, 'currentTime:', currentTime, 'syncPoint:', syncPoint, 'fetchAtBuffer:', this.fetchAtBuffer_, 'bufferedTime:', bufferedTime);
-
- // When the syncPoint is null, there is no way of determining a good
- // conservative segment index to fetch from
- // The best thing to do here is to get the kind of sync-point data by
- // making a request
- if (syncPoint === null) {
- mediaIndex = this.getSyncSegmentCandidate_(playlist);
- this.logger_('getSync', 'mediaIndex:', mediaIndex);
- return this.generateSegmentInfo_(playlist, mediaIndex, null, true);
- }
-
- // Under normal playback conditions fetching is a simple walk forward
- if (mediaIndex !== null) {
- this.logger_('walkForward', 'mediaIndex:', mediaIndex + 1);
- var segment = playlist.segments[mediaIndex];
-
- if (segment && segment.end) {
- startOfSegment = segment.end;
- } else {
- startOfSegment = lastBufferedEnd;
- }
- return this.generateSegmentInfo_(playlist, mediaIndex + 1, startOfSegment, false);
- }
-
- // There is a sync-point but the lack of a mediaIndex indicates that
- // we need to make a good conservative guess about which segment to
- // fetch
- if (this.fetchAtBuffer_) {
- // Find the segment containing the end of the buffer
- var mediaSourceInfo = (0, _playlist.getMediaInfoForTime_)(playlist, lastBufferedEnd, syncPoint.segmentIndex, syncPoint.time);
-
- mediaIndex = mediaSourceInfo.mediaIndex;
- startOfSegment = mediaSourceInfo.startTime;
- } else {
- // Find the segment containing currentTime
- var mediaSourceInfo = (0, _playlist.getMediaInfoForTime_)(playlist, currentTime, syncPoint.segmentIndex, syncPoint.time);
-
- mediaIndex = mediaSourceInfo.mediaIndex;
- startOfSegment = mediaSourceInfo.startTime;
- }
- this.logger_('getMediaIndexForTime', 'mediaIndex:', mediaIndex, 'startOfSegment:', startOfSegment);
-
- return this.generateSegmentInfo_(playlist, mediaIndex, startOfSegment, false);
- }
-
- /**
- * 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 {Object} playlist - the playlist object to look for a
- * @returns {Number} An index of a segment from the playlist to load
- */
- }, {
- key: 'getSyncSegmentCandidate_',
- value: function getSyncSegmentCandidate_(playlist) {
- var _this2 = this;
-
- if (this.currentTimeline_ === -1) {
- return 0;
- }
-
- var segmentIndexArray = playlist.segments.map(function (s, i) {
- return {
- timeline: s.timeline,
- segmentIndex: i
- };
- }).filter(function (s) {
- return s.timeline === _this2.currentTimeline_;
- });
-
- if (segmentIndexArray.length) {
- return segmentIndexArray[Math.min(segmentIndexArray.length - 1, 1)].segmentIndex;
- }
-
- return Math.max(playlist.segments.length - 1, 0);
- }
- }, {
- key: 'generateSegmentInfo_',
- value: function generateSegmentInfo_(playlist, mediaIndex, startOfSegment, isSyncRequest) {
- if (mediaIndex < 0 || mediaIndex >= playlist.segments.length) {
- return null;
- }
-
- var segment = playlist.segments[mediaIndex];
-
- return {
- requestId: 'segment-loader-' + Math.random(),
- // resolve the segment URL relative to the playlist
- uri: segment.resolvedUri,
- // the segment's mediaIndex at the time it was requested
- mediaIndex: mediaIndex,
- // whether or not to update the SegmentLoader's state with this
- // segment's mediaIndex
- isSyncRequest: isSyncRequest,
- startOfSegment: startOfSegment,
- // the segment's playlist
- 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: segment.duration,
- // retain the segment in case the playlist updates while doing an async process
- segment: segment
- };
- }
-
- /**
- * load a specific segment from a request into the buffer
- *
- * @private
- */
- }, {
- key: 'loadSegment_',
- value: function loadSegment_(segmentInfo) {
- var _this3 = this;
-
- this.state = 'WAITING';
- this.pendingSegment_ = segmentInfo;
- this.trimBackBuffer_(segmentInfo);
-
- segmentInfo.abortRequests = (0, _mediaSegmentRequest.mediaSegmentRequest)(this.hls_.xhr, this.xhrOptions_, this.decrypter_, this.createSimplifiedSegmentObj_(segmentInfo),
- // progress callback
- function (event, segment) {
- if (!_this3.pendingSegment_ || segment.requestId !== _this3.pendingSegment_.requestId) {
- return;
- }
- // TODO: Use progress-based bandwidth to early abort low-bandwidth situations
- _this3.trigger('progress');
- }, this.segmentRequestFinished_.bind(this));
- }
-
- /**
- * trim the back buffer so that we don't have too much data
- * in the source buffer
- *
- * @private
- *
- * @param {Object} segmentInfo - the current segment
- */
- }, {
- key: 'trimBackBuffer_',
- value: function trimBackBuffer_(segmentInfo) {
- var seekable = this.seekable_();
- var currentTime = this.currentTime_();
- var removeToTime = 0;
-
- // 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 we have a seekable range use that as the limit for what can be removed safely
- // otherwise remove anything older than 1 minute before the current play head
- if (seekable.length && seekable.start(0) > 0 && seekable.start(0) < currentTime) {
- removeToTime = seekable.start(0);
- } else {
- removeToTime = currentTime - 60;
- }
-
- 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
- * @returns {Object} a simplified segment object copy
- */
- }, {
- key: 'createSimplifiedSegmentObj_',
- value: function createSimplifiedSegmentObj_(segmentInfo) {
- var segment = segmentInfo.segment;
- var simpleSegment = {
- resolvedUri: segment.resolvedUri,
- byterange: segment.byterange,
- requestId: segmentInfo.requestId
- };
-
- 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
- var iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);
-
- simpleSegment.key = {
- resolvedUri: segment.key.resolvedUri,
- iv: iv
- };
- }
-
- if (segment.map) {
- simpleSegment.map = this.initSegment(segment.map);
- }
-
- return simpleSegment;
- }
-
- /**
- * Handle the callback from the segmentRequest function and set the
- * associated SegmentLoader state and errors if necessary
- *
- * @private
- */
- }, {
- key: 'segmentRequestFinished_',
- value: function segmentRequestFinished_(error, simpleSegment) {
- // every request counts as a media request even if it has been aborted
- // or canceled due to a timeout
- this.mediaRequests += 1;
-
- if (simpleSegment.stats) {
- this.mediaBytesTransferred += simpleSegment.stats.bytesReceived;
- this.mediaTransferDuration += simpleSegment.stats.roundTripTime;
- }
-
- // The request was aborted and the SegmentLoader has already been reset
- if (!this.pendingSegment_) {
- this.mediaRequestsAborted += 1;
- 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;
-
- // the requests were aborted just record the aborted stat and exit
- // this is not a true error condition and nothing corrective needs
- // to be done
- if (error.code === _mediaSegmentRequest.REQUEST_ERRORS.ABORTED) {
- this.mediaRequestsAborted += 1;
- return;
- }
-
- this.state = 'READY';
- 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 === _mediaSegmentRequest.REQUEST_ERRORS.TIMEOUT) {
- this.mediaRequestsTimedout += 1;
- this.bandwidth = 1;
- this.roundTrip = NaN;
- this.trigger('bandwidthupdate');
- return;
- }
-
- // if control-flow has arrived here, then the error is real
- // emit an error event to blacklist the current playlist
- this.mediaRequestsErrored += 1;
- this.error(error);
- this.trigger('error');
- return;
- }
-
- // the response was a success so set any bandwidth stats the request
- // generated for ABR purposes
- this.bandwidth = simpleSegment.stats.bandwidth;
- this.roundTrip = simpleSegment.stats.roundTripTime;
-
- // if this request included an initialization segment, save that data
- // to the initSegment cache
- if (simpleSegment.map) {
- simpleSegment.map = this.initSegment(simpleSegment.map, true);
- }
-
- this.processSegmentResponse_(simpleSegment);
- }
-
- /**
- * Move any important data from the simplified segment object
- * back to the real segment object for future phases
- *
- * @private
- */
- }, {
- key: 'processSegmentResponse_',
- value: function processSegmentResponse_(simpleSegment) {
- var segmentInfo = this.pendingSegment_;
-
- segmentInfo.bytes = simpleSegment.bytes;
- if (simpleSegment.map) {
- segmentInfo.segment.map.bytes = simpleSegment.map.bytes;
- }
-
- segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;
- this.handleSegment_();
- }
-
- /**
- * append a decrypted segement to the SourceBuffer through a SourceUpdater
- *
- * @private
- */
- }, {
- key: 'handleSegment_',
- value: function handleSegment_() {
- var _this4 = this;
-
- if (!this.pendingSegment_) {
- this.state = 'READY';
- return;
- }
-
- this.state = 'APPENDING';
-
- var segmentInfo = this.pendingSegment_;
- var segment = segmentInfo.segment;
-
- this.syncController_.probeSegmentInfo(segmentInfo);
-
- if (segmentInfo.isSyncRequest) {
- this.trigger('syncinfoupdate');
- this.pendingSegment_ = null;
- this.state = 'READY';
- return;
- }
-
- if (segmentInfo.timestampOffset !== null && segmentInfo.timestampOffset !== this.sourceUpdater_.timestampOffset()) {
- this.sourceUpdater_.timestampOffset(segmentInfo.timestampOffset);
- }
-
- // if the media initialization segment is changing, append it
- // before the content segment
- if (segment.map) {
- (function () {
- var initId = (0, _binUtils.initSegmentId)(segment.map);
-
- if (!_this4.activeInitSegmentId_ || _this4.activeInitSegmentId_ !== initId) {
- var initSegment = _this4.initSegment(segment.map);
-
- _this4.sourceUpdater_.appendBuffer(initSegment.bytes, function () {
- _this4.activeInitSegmentId_ = initId;
- });
- }
- })();
- }
-
- segmentInfo.byteLength = segmentInfo.bytes.byteLength;
- if (typeof segment.start === 'number' && typeof segment.end === 'number') {
- this.mediaSecondsLoaded += segment.end - segment.start;
- } else {
- this.mediaSecondsLoaded += segment.duration;
- }
-
- this.sourceUpdater_.appendBuffer(segmentInfo.bytes, this.handleUpdateEnd_.bind(this));
- }
-
- /**
- * 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
- */
- }, {
- key: 'handleUpdateEnd_',
- value: function handleUpdateEnd_() {
- this.logger_('handleUpdateEnd_', 'segmentInfo:', this.pendingSegment_);
-
- if (!this.pendingSegment_) {
- this.state = 'READY';
- if (!this.paused()) {
- this.monitorBuffer_();
- }
- return;
- }
-
- var segmentInfo = this.pendingSegment_;
- var segment = segmentInfo.segment;
- var isWalkingForward = this.mediaIndex !== null;
-
- this.pendingSegment_ = null;
- this.recordThroughput_(segmentInfo);
- this.addSegmentMetadataCue_(segmentInfo);
-
- this.state = 'READY';
-
- this.mediaIndex = segmentInfo.mediaIndex;
- this.fetchAtBuffer_ = true;
- 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');
-
- // If we previously appended a segment that ends more than 3 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 (segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3) {
- this.resetEverything();
- return;
- }
-
- // 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');
-
- // 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.
- var isEndOfStream = detectEndOfStream(segmentInfo.playlist, this.mediaSource_, segmentInfo.mediaIndex + 1);
-
- if (isEndOfStream) {
- this.mediaSource_.endOfStream();
- }
-
- 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
- */
- }, {
- key: 'recordThroughput_',
- value: function recordThroughput_(segmentInfo) {
- var 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
- var segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1;
- // Multiply by 8000 to convert from bytes/millisecond to bits/second
- var 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;
- }
-
- /**
- * A debugging logger noop that is set to console.log only if debugging
- * is enabled globally
- *
- * @private
- */
- }, {
- key: 'logger_',
- value: function logger_() {}
-
- /**
- * 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_
- */
- }, {
- key: 'addSegmentMetadataCue_',
- value: function addSegmentMetadataCue_(segmentInfo) {
- if (!this.segmentMetadataTrack_) {
- return;
- }
-
- var segment = segmentInfo.segment;
- var start = segment.start;
- var end = segment.end;
-
- (0, _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs2['default'])(start, end, this.segmentMetadataTrack_);
-
- var Cue = _globalWindow2['default'].WebKitDataCue || _globalWindow2['default'].VTTCue;
- var value = {
- uri: segmentInfo.uri,
- timeline: segmentInfo.timeline,
- playlist: segmentInfo.playlist.uri,
- start: start,
- end: end
- };
- var data = JSON.stringify(value);
- var 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);
- }
- }]);
-
- return SegmentLoader;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = SegmentLoader;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./bin-utils":2,"./config":3,"./media-segment-request":6,"./playlist":9,"./source-updater":15,"global/window":30,"videojs-contrib-media-sources/es5/remove-cues-from-track.js":71}],15:[function(require,module,exports){
- (function (global){
- /**
- * @file source-updater.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var noop = function noop() {};
-
- /**
- * 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
- */
-
- var SourceUpdater = (function () {
- function SourceUpdater(mediaSource, mimeType) {
- var _this = this;
-
- _classCallCheck(this, SourceUpdater);
-
- var createSourceBuffer = function createSourceBuffer() {
- _this.sourceBuffer_ = mediaSource.addSourceBuffer(mimeType);
-
- // run completion handlers and process callbacks as updateend
- // events fire
- _this.onUpdateendCallback_ = function () {
- var pendingCallback = _this.pendingCallback_;
-
- _this.pendingCallback_ = null;
-
- if (pendingCallback) {
- pendingCallback();
- }
-
- _this.runCallback_();
- };
-
- _this.sourceBuffer_.addEventListener('updateend', _this.onUpdateendCallback_);
-
- _this.runCallback_();
- };
-
- this.callbacks_ = [];
- this.pendingCallback_ = null;
- this.timestampOffset_ = 0;
- this.mediaSource = mediaSource;
- this.processedAppend_ = false;
-
- if (mediaSource.readyState === 'closed') {
- mediaSource.addEventListener('sourceopen', createSourceBuffer);
- } else {
- createSourceBuffer();
- }
- }
-
- /**
- * Aborts the current segment and resets the segment parser.
- *
- * @param {Function} done function to call when done
- * @see http://w3c.github.io/media-source/#widl-SourceBuffer-abort-void
- */
-
- _createClass(SourceUpdater, [{
- key: 'abort',
- value: function abort(done) {
- var _this2 = this;
-
- if (this.processedAppend_) {
- this.queueCallback_(function () {
- _this2.sourceBuffer_.abort();
- }, done);
- }
- }
-
- /**
- * Queue an update to append an ArrayBuffer.
- *
- * @param {ArrayBuffer} bytes
- * @param {Function} done the function to call when done
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data
- */
- }, {
- key: 'appendBuffer',
- value: function appendBuffer(bytes, done) {
- var _this3 = this;
-
- this.processedAppend_ = true;
-
- this.queueCallback_(function () {
- _this3.sourceBuffer_.appendBuffer(bytes);
- }, done);
- }
-
- /**
- * Indicates what TimeRanges are buffered in the managed SourceBuffer.
- *
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-buffered
- */
- }, {
- key: 'buffered',
- value: function buffered() {
- if (!this.sourceBuffer_) {
- return _videoJs2['default'].createTimeRanges();
- }
- return this.sourceBuffer_.buffered;
- }
-
- /**
- * 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
- * @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
- */
- }, {
- key: 'remove',
- value: function remove(start, end) {
- var _this4 = this;
-
- if (this.processedAppend_) {
- this.queueCallback_(function () {
- _this4.sourceBuffer_.remove(start, end);
- }, noop);
- }
- }
-
- /**
- * Whether the underlying sourceBuffer is updating or not
- *
- * @return {Boolean} the updating status of the SourceBuffer
- */
- }, {
- key: 'updating',
- value: function updating() {
- return !this.sourceBuffer_ || this.sourceBuffer_.updating || this.pendingCallback_;
- }
-
- /**
- * Set/get the timestampoffset on the SourceBuffer
- *
- * @return {Number} the timestamp offset
- */
- }, {
- key: 'timestampOffset',
- value: function timestampOffset(offset) {
- var _this5 = this;
-
- if (typeof offset !== 'undefined') {
- this.queueCallback_(function () {
- _this5.sourceBuffer_.timestampOffset = offset;
- });
- this.timestampOffset_ = offset;
- }
- return this.timestampOffset_;
- }
-
- /**
- * Queue a callback to run
- */
- }, {
- key: 'queueCallback_',
- value: function queueCallback_(callback, done) {
- this.callbacks_.push([callback.bind(this), done]);
- this.runCallback_();
- }
-
- /**
- * Run a queued callback
- */
- }, {
- key: 'runCallback_',
- value: function runCallback_() {
- var callbacks = undefined;
-
- if (!this.updating() && this.callbacks_.length) {
- callbacks = this.callbacks_.shift();
- this.pendingCallback_ = callbacks[1];
- callbacks[0]();
- }
- }
-
- /**
- * dispose of the source updater and the underlying sourceBuffer
- */
- }, {
- key: 'dispose',
- value: function dispose() {
- this.sourceBuffer_.removeEventListener('updateend', this.onUpdateendCallback_);
- if (this.sourceBuffer_ && this.mediaSource.readyState === 'open') {
- this.sourceBuffer_.abort();
- }
- }
- }]);
-
- return SourceUpdater;
- })();
-
- exports['default'] = SourceUpdater;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{}],16:[function(require,module,exports){
- /**
- * @file stream.js
- */
- /**
- * A lightweight readable stream implemention that handles event dispatching.
- *
- * @class Stream
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var Stream = (function () {
- function Stream() {
- _classCallCheck(this, 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
- */
-
- _createClass(Stream, [{
- key: 'on',
- value: 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
- */
- }, {
- key: 'off',
- value: function off(type, listener) {
- var index = undefined;
-
- if (!this.listeners[type]) {
- return false;
- }
- index = this.listeners[type].indexOf(listener);
- 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
- */
- }, {
- key: 'trigger',
- value: function trigger(type) {
- var callbacks = undefined;
- var i = undefined;
- var length = undefined;
- var args = undefined;
-
- 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) {
- length = callbacks.length;
- for (i = 0; i < length; ++i) {
- callbacks[i].call(this, arguments[1]);
- }
- } else {
- args = Array.prototype.slice.call(arguments, 1);
- length = callbacks.length;
- for (i = 0; i < length; ++i) {
- callbacks[i].apply(this, args);
- }
- }
- }
-
- /**
- * Destroys the stream and cleans up.
- */
- }, {
- key: 'dispose',
- value: 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
- */
- }, {
- key: 'pipe',
- value: function pipe(destination) {
- this.on('data', function (data) {
- destination.push(data);
- });
- }
- }]);
-
- return Stream;
- })();
-
- exports['default'] = Stream;
- module.exports = exports['default'];
- },{}],17:[function(require,module,exports){
- (function (global){
- /**
- * @file sync-controller.js
- */
-
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _muxJsLibMp4Probe = require('mux.js/lib/mp4/probe');
-
- var _muxJsLibMp4Probe2 = _interopRequireDefault(_muxJsLibMp4Probe);
-
- var _muxJsLibToolsTsInspectorJs = require('mux.js/lib/tools/ts-inspector.js');
-
- var _playlist = require('./playlist');
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var syncPointStrategies = [
- // Stategy "VOD": Handle the VOD-case where the sync-point is *always*
- // the equivalence display-time 0 === segment-index 0
- {
- name: 'VOD',
- run: function run(syncController, playlist, duration, currentTimeline, currentTime) {
- if (duration !== Infinity) {
- var syncPoint = {
- time: 0,
- segmentIndex: 0
- };
-
- return syncPoint;
- }
- return null;
- }
- },
- // Stategy "ProgramDateTime": We have a program-date-time tag in this playlist
- {
- name: 'ProgramDateTime',
- run: function run(syncController, playlist, duration, currentTimeline, currentTime) {
- if (syncController.datetimeToDisplayTime && playlist.dateTimeObject) {
- var playlistTime = playlist.dateTimeObject.getTime() / 1000;
- var playlistStart = playlistTime + syncController.datetimeToDisplayTime;
- var syncPoint = {
- time: playlistStart,
- segmentIndex: 0
- };
-
- return syncPoint;
- }
- return null;
- }
- },
- // Stategy "Segment": We have a known time mapping for a timeline and a
- // segment in the current timeline with timing data
- {
- name: 'Segment',
- run: function run(syncController, playlist, duration, currentTimeline, currentTime) {
- var segments = playlist.segments;
- var syncPoint = null;
- var lastDistance = null;
-
- currentTime = currentTime || 0;
-
- for (var i = 0; i < segments.length; i++) {
- var segment = segments[i];
-
- if (segment.timeline === currentTimeline && typeof segment.start !== 'undefined') {
- var distance = Math.abs(currentTime - segment.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: segment.start,
- segmentIndex: i
- };
- }
- }
- }
- return syncPoint;
- }
- },
- // Stategy "Discontinuity": We have a discontinuity with a known
- // display-time
- {
- name: 'Discontinuity',
- run: function run(syncController, playlist, duration, currentTimeline, currentTime) {
- var syncPoint = null;
-
- currentTime = currentTime || 0;
-
- if (playlist.discontinuityStarts.length) {
- var lastDistance = null;
-
- for (var i = 0; i < playlist.discontinuityStarts.length; i++) {
- var segmentIndex = playlist.discontinuityStarts[i];
- var discontinuity = playlist.discontinuitySequence + i + 1;
- var discontinuitySync = syncController.discontinuities[discontinuity];
-
- if (discontinuitySync) {
- var 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: segmentIndex
- };
- }
- }
- }
- }
- return syncPoint;
- }
- },
- // Stategy "Playlist": We have a playlist with a known mapping of
- // segment index to display time
- {
- name: 'Playlist',
- run: function run(syncController, playlist, duration, currentTimeline, currentTime) {
- if (playlist.syncInfo) {
- var syncPoint = {
- time: playlist.syncInfo.time,
- segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence
- };
-
- return syncPoint;
- }
- return null;
- }
- }];
-
- exports.syncPointStrategies = syncPointStrategies;
-
- var SyncController = (function (_videojs$EventTarget) {
- _inherits(SyncController, _videojs$EventTarget);
-
- function SyncController() {
- _classCallCheck(this, SyncController);
-
- _get(Object.getPrototypeOf(SyncController.prototype), 'constructor', this).call(this);
- // Segment Loader state variables...
- // ...for synching across variants
- this.inspectCache_ = undefined;
-
- // ...for synching across variants
- this.timelines = [];
- this.discontinuities = [];
- this.datetimeToDisplayTime = null;
-
- if (_videoJs2['default'].options.hls && _videoJs2['default'].options.hls.debug) {
- this.logger_ = _videoJs2['default'].log.bind(_videoJs2['default'], 'sync-controller ->');
- }
- }
-
- /**
- * 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} media - 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
- * @returns {Object} - A sync-point object
- */
-
- _createClass(SyncController, [{
- key: 'getSyncPoint',
- value: function getSyncPoint(playlist, duration, currentTimeline, currentTime) {
- var syncPoints = [];
-
- // Try to find a sync-point in by utilizing various strategies...
- for (var i = 0; i < syncPointStrategies.length; i++) {
- var strategy = syncPointStrategies[i];
- var syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime);
-
- if (syncPoint) {
- syncPoint.strategy = strategy.name;
- syncPoints.push({
- strategy: strategy.name,
- syncPoint: syncPoint
- });
- this.logger_('syncPoint found via <' + strategy.name + '>:', syncPoint);
- }
- }
-
- 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;
- }
-
- // 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
- var bestSyncPoint = syncPoints[0].syncPoint;
- var bestDistance = Math.abs(syncPoints[0].syncPoint.time - currentTime);
- var bestStrategy = syncPoints[0].strategy;
-
- for (var i = 1; i < syncPoints.length; i++) {
- var newDistance = Math.abs(syncPoints[i].syncPoint.time - currentTime);
-
- if (newDistance < bestDistance) {
- bestDistance = newDistance;
- bestSyncPoint = syncPoints[i].syncPoint;
- bestStrategy = syncPoints[i].strategy;
- }
- }
- this.logger_('syncPoint with strategy <' + bestStrategy + '> chosen: ', bestSyncPoint);
- 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
- */
- }, {
- key: 'saveExpiredSegmentInfo',
- value: function saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {
- var mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;
-
- // 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 (var i = mediaSequenceDiff - 1; i >= 0; i--) {
- var lastRemovedSegment = oldPlaylist.segments[i];
-
- if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {
- newPlaylist.syncInfo = {
- mediaSequence: oldPlaylist.mediaSequence + i,
- time: lastRemovedSegment.start
- };
- this.logger_('playlist sync:', newPlaylist.syncInfo);
- this.trigger('syncinfoupdate');
- break;
- }
- }
- }
-
- /**
- * Save the mapping from playlist's ProgramDateTime to display. This should
- * only ever happen once at the start of playback.
- *
- * @param {Playlist} playlist - The currently active playlist
- */
- }, {
- key: 'setDateTimeMapping',
- value: function setDateTimeMapping(playlist) {
- if (!this.datetimeToDisplayTime && playlist.dateTimeObject) {
- var playlistTimestamp = playlist.dateTimeObject.getTime() / 1000;
-
- this.datetimeToDisplayTime = -playlistTimestamp;
- }
- }
-
- /**
- * Reset the state of the inspection cache when we do a rendition
- * switch
- */
- }, {
- key: 'reset',
- value: function reset() {
- this.inspectCache_ = undefined;
- }
-
- /**
- * Probe or inspect a fmp4 or an mpeg2-ts segment to determine the start
- * and end of the segment in it's internal "media time". Used to generate
- * mappings from that internal "media time" to the display time that is
- * shown on the player.
- *
- * @param {SegmentInfo} segmentInfo - The current active request information
- */
- }, {
- key: 'probeSegmentInfo',
- value: function probeSegmentInfo(segmentInfo) {
- var segment = segmentInfo.segment;
- var timingInfo = undefined;
-
- if (segment.map) {
- timingInfo = this.probeMp4Segment_(segmentInfo);
- } else {
- timingInfo = this.probeTsSegment_(segmentInfo);
- }
-
- if (timingInfo) {
- if (this.calculateSegmentTimeMapping_(segmentInfo, timingInfo)) {
- this.saveDiscontinuitySyncInfo_(segmentInfo);
- }
- }
- }
-
- /**
- * Probe an fmp4 or an mpeg2-ts segment to determine the start of the segment
- * in it's internal "media time".
- *
- * @private
- * @param {SegmentInfo} segmentInfo - The current active request information
- * @return {object} The start and end time of the current segment in "media time"
- */
- }, {
- key: 'probeMp4Segment_',
- value: function probeMp4Segment_(segmentInfo) {
- var segment = segmentInfo.segment;
- var timescales = _muxJsLibMp4Probe2['default'].timescale(segment.map.bytes);
- var startTime = _muxJsLibMp4Probe2['default'].startTime(timescales, segmentInfo.bytes);
-
- if (segmentInfo.timestampOffset !== null) {
- segmentInfo.timestampOffset -= startTime;
- }
-
- return {
- start: startTime,
- end: startTime + segment.duration
- };
- }
-
- /**
- * Probe an mpeg2-ts segment to determine the start and end of the segment
- * in it's internal "media time".
- *
- * @private
- * @param {SegmentInfo} segmentInfo - The current active request information
- * @return {object} The start and end time of the current segment in "media time"
- */
- }, {
- key: 'probeTsSegment_',
- value: function probeTsSegment_(segmentInfo) {
- var timeInfo = (0, _muxJsLibToolsTsInspectorJs.inspect)(segmentInfo.bytes, this.inspectCache_);
- var segmentStartTime = undefined;
- var segmentEndTime = undefined;
-
- if (!timeInfo) {
- return null;
- }
-
- if (timeInfo.video && timeInfo.video.length === 2) {
- this.inspectCache_ = timeInfo.video[1].dts;
- segmentStartTime = timeInfo.video[0].dtsTime;
- segmentEndTime = timeInfo.video[1].dtsTime;
- } else if (timeInfo.audio && timeInfo.audio.length === 2) {
- this.inspectCache_ = timeInfo.audio[1].dts;
- segmentStartTime = timeInfo.audio[0].dtsTime;
- segmentEndTime = timeInfo.audio[1].dtsTime;
- }
-
- return {
- start: segmentStartTime,
- end: segmentEndTime
- };
- }
- }, {
- key: 'timestampOffsetForTimeline',
- value: function timestampOffsetForTimeline(timeline) {
- if (typeof this.timelines[timeline] === 'undefined') {
- return null;
- }
- return this.timelines[timeline].time;
- }
-
- /**
- * 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"
- */
- }, {
- key: 'calculateSegmentTimeMapping_',
- value: function calculateSegmentTimeMapping_(segmentInfo, timingInfo) {
- var segment = segmentInfo.segment;
- var mappingObj = this.timelines[segmentInfo.timeline];
-
- if (segmentInfo.timestampOffset !== null) {
- this.logger_('tsO:', segmentInfo.timestampOffset);
-
- mappingObj = {
- time: segmentInfo.startOfSegment,
- mapping: segmentInfo.startOfSegment - timingInfo.start
- };
- this.timelines[segmentInfo.timeline] = mappingObj;
- this.trigger('timestampoffset');
-
- segment.start = segmentInfo.startOfSegment;
- segment.end = timingInfo.end + mappingObj.mapping;
- } else if (mappingObj) {
- segment.start = timingInfo.start + mappingObj.mapping;
- segment.end = timingInfo.end + mappingObj.mapping;
- } else {
- return false;
- }
-
- 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
- */
- }, {
- key: 'saveDiscontinuitySyncInfo_',
- value: function saveDiscontinuitySyncInfo_(segmentInfo) {
- var playlist = segmentInfo.playlist;
- var 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.length) {
- // Search for future discontinuities that we can provide better timing
- // information for and save that information for sync purposes
- for (var i = 0; i < playlist.discontinuityStarts.length; i++) {
- var segmentIndex = playlist.discontinuityStarts[i];
- var discontinuity = playlist.discontinuitySequence + i + 1;
- var mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;
- var accuracy = Math.abs(mediaIndexDiff);
-
- if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {
- if (mediaIndexDiff < 0) {
- this.discontinuities[discontinuity] = {
- time: segment.start - (0, _playlist.sumDurations)(playlist, segmentInfo.mediaIndex, segmentIndex),
- accuracy: accuracy
- };
- } else {
- this.discontinuities[discontinuity] = {
- time: segment.end + (0, _playlist.sumDurations)(playlist, segmentInfo.mediaIndex + 1, segmentIndex),
- accuracy: accuracy
- };
- }
- }
- }
- }
- }
-
- /**
- * A debugging logger noop that is set to console.log only if debugging
- * is enabled globally
- *
- * @private
- */
- }, {
- key: 'logger_',
- value: function logger_() {}
- }]);
-
- return SyncController;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = SyncController;
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./playlist":9,"mux.js/lib/mp4/probe":55,"mux.js/lib/tools/ts-inspector.js":57}],18:[function(require,module,exports){
- (function (global){
- /**
- * @file vtt-segment-loader.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x2, _x3, _x4) { var _again = true; _function: while (_again) { var object = _x2, property = _x3, receiver = _x4; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x2 = parent; _x3 = property; _x4 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _segmentLoader = require('./segment-loader');
-
- var _segmentLoader2 = _interopRequireDefault(_segmentLoader);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs = require('videojs-contrib-media-sources/es5/remove-cues-from-track.js');
-
- var _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs2 = _interopRequireDefault(_videojsContribMediaSourcesEs5RemoveCuesFromTrackJs);
-
- var _binUtils = require('./bin-utils');
-
- var VTT_LINE_TERMINATORS = new Uint8Array('\n\n'.split('').map(function (char) {
- return char.charCodeAt(0);
- }));
-
- var uintToString = function uintToString(uintArray) {
- return String.fromCharCode.apply(null, uintArray);
- };
-
- /**
- * An object that manages segment loading and appending.
- *
- * @class VTTSegmentLoader
- * @param {Object} options required and optional options
- * @extends videojs.EventTarget
- */
-
- var VTTSegmentLoader = (function (_SegmentLoader) {
- _inherits(VTTSegmentLoader, _SegmentLoader);
-
- function VTTSegmentLoader(options) {
- _classCallCheck(this, VTTSegmentLoader);
-
- _get(Object.getPrototypeOf(VTTSegmentLoader.prototype), 'constructor', this).call(this, 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;
- }
-
- /**
- * Indicates which time ranges are buffered
- *
- * @return {TimeRange}
- * TimeRange object representing the current buffered ranges
- */
-
- _createClass(VTTSegmentLoader, [{
- key: 'buffered_',
- value: function buffered_() {
- if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues.length) {
- return _videoJs2['default'].createTimeRanges();
- }
-
- var cues = this.subtitlesTrack_.cues;
- var start = cues[0].startTime;
- var end = cues[cues.length - 1].startTime;
-
- return _videoJs2['default'].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
- */
- }, {
- key: 'initSegment',
- value: function initSegment(map) {
- var set = arguments.length <= 1 || arguments[1] === undefined ? false : arguments[1];
-
- if (!map) {
- return null;
- }
-
- var id = (0, _binUtils.initSegmentId)(map);
- var 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
- var combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;
- var 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
- */
- }, {
- key: 'couldBeginLoading_',
- value: function 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
- */
- }, {
- key: 'init_',
- value: function 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
- */
- }, {
- key: 'track',
- value: function track(_track) {
- this.subtitlesTrack_ = _track;
-
- // if we were unpaused but waiting for a sourceUpdater, start
- // buffering now
- if (this.state === 'INIT' && this.couldBeginLoading_()) {
- this.init_();
- }
- }
-
- /**
- * 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
- */
- }, {
- key: 'remove',
- value: function remove(start, end) {
- (0, _videojsContribMediaSourcesEs5RemoveCuesFromTrackJs2['default'])(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
- */
- }, {
- key: 'fillBuffer_',
- value: function fillBuffer_() {
- var _this = this;
-
- if (!this.syncPoint_) {
- this.syncPoint_ = this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_());
- }
-
- // see if we need to begin loading immediately
- var segmentInfo = this.checkBuffer_(this.buffered_(), this.playlist_, this.mediaIndex, this.hasPlayed_(), this.currentTime_(), this.syncPoint_);
-
- segmentInfo = this.skipEmptySegments_(segmentInfo);
-
- 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.
- var checkTimestampOffset = function 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);
- }
-
- /**
- * 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
- */
- }, {
- key: 'skipEmptySegments_',
- value: function skipEmptySegments_(segmentInfo) {
- while (segmentInfo && segmentInfo.segment.empty) {
- segmentInfo = this.generateSegmentInfo_(segmentInfo.playlist, segmentInfo.mediaIndex + 1, segmentInfo.startOfSegment + segmentInfo.duration, segmentInfo.isSyncRequest);
- }
- return segmentInfo;
- }
-
- /**
- * append a decrypted segement to the SourceBuffer through a SourceUpdater
- *
- * @private
- */
- }, {
- key: 'handleSegment_',
- value: function handleSegment_() {
- var _this2 = this;
-
- if (!this.pendingSegment_) {
- this.state = 'READY';
- return;
- }
-
- this.state = 'APPENDING';
-
- var segmentInfo = this.pendingSegment_;
- var segment = segmentInfo.segment;
-
- // Make sure that vttjs has loaded, otherwise, wait till it finished loading
- if (typeof _globalWindow2['default'].WebVTT !== 'function' && this.subtitlesTrack_ && this.subtitlesTrack_.tech_) {
- var _ret = (function () {
-
- var loadHandler = function loadHandler() {
- _this2.handleSegment_();
- };
-
- _this2.state = 'WAITING_ON_VTTJS';
- _this2.subtitlesTrack_.tech_.one('vttjsloaded', loadHandler);
- _this2.subtitlesTrack_.tech_.one('vttjserror', function () {
- _this2.subtitlesTrack_.tech_.off('vttjsloaded', loadHandler);
- _this2.error({
- message: 'Error loading vtt.js'
- });
- _this2.state = 'READY';
- _this2.pause();
- _this2.trigger('error');
- });
-
- return {
- v: undefined
- };
- })();
-
- if (typeof _ret === 'object') return _ret.v;
- }
-
- segment.requested = true;
-
- try {
- this.parseVTTCues_(segmentInfo);
- } catch (e) {
- this.error({
- message: e.message
- });
- this.state = 'READY';
- this.pause();
- return this.trigger('error');
- }
-
- this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);
-
- if (segmentInfo.isSyncRequest) {
- this.trigger('syncinfoupdate');
- this.pendingSegment_ = null;
- this.state = 'READY';
- return;
- }
-
- segmentInfo.byteLength = segmentInfo.bytes.byteLength;
-
- this.mediaSecondsLoaded += segment.duration;
-
- segmentInfo.cues.forEach(function (cue) {
- _this2.subtitlesTrack_.addCue(cue);
- });
-
- this.handleUpdateEnd_();
- }
-
- /**
- * Uses the WebVTT parser to parse the segment response
- *
- * @param {Object} segmentInfo
- * a segment info object that describes the current segment
- * @private
- */
- }, {
- key: 'parseVTTCues_',
- value: function parseVTTCues_(segmentInfo) {
- var decoder = undefined;
- var decodeBytesToString = false;
-
- if (typeof _globalWindow2['default'].TextDecoder === 'function') {
- decoder = new _globalWindow2['default'].TextDecoder('utf8');
- } else {
- decoder = _globalWindow2['default'].WebVTT.StringDecoder();
- decodeBytesToString = true;
- }
-
- var parser = new _globalWindow2['default'].WebVTT.Parser(_globalWindow2['default'], _globalWindow2['default'].vttjs, decoder);
-
- segmentInfo.cues = [];
- segmentInfo.timestampmap = { MPEGTS: 0, LOCAL: 0 };
-
- parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);
- parser.ontimestampmap = function (map) {
- return segmentInfo.timestampmap = map;
- };
- parser.onparsingerror = function (error) {
- _videoJs2['default'].log.warn('Error encountered when parsing cues: ' + error.message);
- };
-
- if (segmentInfo.segment.map) {
- var mapData = segmentInfo.segment.map.bytes;
-
- if (decodeBytesToString) {
- mapData = uintToString(mapData);
- }
-
- parser.parse(mapData);
- }
-
- var segmentData = segmentInfo.bytes;
-
- if (decodeBytesToString) {
- segmentData = uintToString(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
- */
- }, {
- key: 'updateTimeMapping_',
- value: function updateTimeMapping_(segmentInfo, mappingObj, playlist) {
- var 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;
- }
-
- var timestampmap = segmentInfo.timestampmap;
- var diff = timestampmap.MPEGTS / 90000 - timestampmap.LOCAL + mappingObj.mapping;
-
- segmentInfo.cues.forEach(function (cue) {
- // First convert cue time to TS time using the timestamp-map provided within the vtt
- cue.startTime += diff;
- cue.endTime += diff;
- });
-
- if (!playlist.syncInfo) {
- var firstStart = segmentInfo.cues[0].startTime;
- var lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;
-
- playlist.syncInfo = {
- mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,
- time: Math.min(firstStart, lastStart - segment.duration)
- };
- }
- }
- }]);
-
- return VTTSegmentLoader;
- })(_segmentLoader2['default']);
-
- exports['default'] = VTTSegmentLoader;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./bin-utils":2,"./segment-loader":14,"global/window":30,"videojs-contrib-media-sources/es5/remove-cues-from-track.js":71}],19:[function(require,module,exports){
- (function (global){
- /**
- * @file xhr.js
- */
-
- /**
- * A wrapper for videojs.xhr that tracks bandwidth.
- *
- * @param {Object} options options for the XHR
- * @param {Function} callback the callback to call when done
- * @return {Request} the xhr request that is going to be made
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var xhrFactory = function xhrFactory() {
- var xhr = function XhrFunction(options, callback) {
- // Add a default timeout for all hls requests
- options = (0, _videoJs.mergeOptions)({
- timeout: 45e3
- }, options);
-
- // Allow an optional user-specified function to modify the option
- // object before we construct the xhr request
- var beforeRequest = XhrFunction.beforeRequest || _videoJs2['default'].Hls.xhr.beforeRequest;
-
- if (beforeRequest && typeof beforeRequest === 'function') {
- var newOptions = beforeRequest(options);
-
- if (newOptions) {
- options = newOptions;
- }
- }
-
- var request = (0, _videoJs.xhr)(options, function (error, response) {
- var reqResponse = request.response;
-
- 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);
- }
- }
-
- // 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);
- });
- var originalAbort = request.abort;
-
- request.abort = function () {
- request.aborted = true;
- return originalAbort.apply(request, arguments);
- };
- request.uri = options.uri;
- request.requestTime = Date.now();
- return request;
- };
-
- return xhr;
- };
-
- exports['default'] = xhrFactory;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{}],20:[function(require,module,exports){
- /**
- * @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
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var precompute = function precompute() {
- var tables = [[[], [], [], [], []], [[], [], [], [], []]];
- var encTable = tables[0];
- var decTable = tables[1];
- var sbox = encTable[4];
- var sboxInv = decTable[4];
- var i = undefined;
- var x = undefined;
- var xInv = undefined;
- var d = [];
- var th = [];
- var x2 = undefined;
- var x4 = undefined;
- var x8 = undefined;
- var s = undefined;
- var tEnc = undefined;
- var tDec = undefined;
-
- // 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;
- };
- var 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.
- */
-
- var AES = (function () {
- function AES(key) {
- _classCallCheck(this, AES);
-
- /**
- * 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()]];
- var i = undefined;
- var j = undefined;
- var tmp = undefined;
- var encKey = undefined;
- var decKey = undefined;
- var sbox = this._tables[0][4];
- var decTable = this._tables[1];
- var keyLen = key.length;
- var rcon = 1;
-
- if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {
- throw new Error('Invalid aes key size');
- }
-
- encKey = key.slice(0);
- 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.
- */
-
- _createClass(AES, [{
- key: 'decrypt',
- value: function decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {
- var key = this._key[1];
- // state variables a,b,c,d are loaded with pre-whitened data
- var a = encrypted0 ^ key[0];
- var b = encrypted3 ^ key[1];
- var c = encrypted2 ^ key[2];
- var d = encrypted1 ^ key[3];
- var a2 = undefined;
- var b2 = undefined;
- var c2 = undefined;
-
- // key.length === 2 ?
- var nInnerRounds = key.length / 4 - 2;
- var i = undefined;
- var kIndex = 4;
- var table = this._tables[1];
-
- // load up the tables
- var table0 = table[0];
- var table1 = table[1];
- var table2 = table[2];
- var table3 = table[3];
- var 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;
- }
- }
- }]);
-
- return AES;
- })();
-
- exports['default'] = AES;
- module.exports = exports['default'];
- },{}],21:[function(require,module,exports){
- /**
- * @file async-stream.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _stream = require('./stream');
-
- var _stream2 = _interopRequireDefault(_stream);
-
- /**
- * A wrapper around the Stream class to use setTiemout
- * and run stream "jobs" Asynchronously
- *
- * @class AsyncStream
- * @extends Stream
- */
-
- var AsyncStream = (function (_Stream) {
- _inherits(AsyncStream, _Stream);
-
- function AsyncStream() {
- _classCallCheck(this, AsyncStream);
-
- _get(Object.getPrototypeOf(AsyncStream.prototype), 'constructor', this).call(this, _stream2['default']);
- this.jobs = [];
- this.delay = 1;
- this.timeout_ = null;
- }
-
- /**
- * process an async job
- *
- * @private
- */
-
- _createClass(AsyncStream, [{
- key: 'processJob_',
- value: function 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
- */
- }, {
- key: 'push',
- value: function push(job) {
- this.jobs.push(job);
- if (!this.timeout_) {
- this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
- }
- }
- }]);
-
- return AsyncStream;
- })(_stream2['default']);
-
- exports['default'] = AsyncStream;
- module.exports = exports['default'];
- },{"./stream":24}],22:[function(require,module,exports){
- /**
- * @file decrypter.js
- *
- * An asynchronous implementation of AES-128 CBC decryption with
- * PKCS#7 padding.
- */
-
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _aes = require('./aes');
-
- var _aes2 = _interopRequireDefault(_aes);
-
- var _asyncStream = require('./async-stream');
-
- var _asyncStream2 = _interopRequireDefault(_asyncStream);
-
- var _pkcs7 = require('pkcs7');
-
- /**
- * Convert network-order (big-endian) bytes into their little-endian
- * representation.
- */
- var ntoh = function ntoh(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
- */
- var decrypt = function decrypt(encrypted, key, initVector) {
- // word-level access to the encrypted bytes
- var encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);
-
- var decipher = new _aes2['default'](Array.prototype.slice.call(key));
-
- // byte and word-level access for the decrypted output
- var decrypted = new Uint8Array(encrypted.byteLength);
- var decrypted32 = new Int32Array(decrypted.buffer);
-
- // temporary variables for working with the IV, encrypted, and
- // decrypted data
- var init0 = undefined;
- var init1 = undefined;
- var init2 = undefined;
- var init3 = undefined;
- var encrypted0 = undefined;
- var encrypted1 = undefined;
- var encrypted2 = undefined;
- var encrypted3 = undefined;
-
- // iteration variable
- var wordIx = undefined;
-
- // 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;
- };
-
- exports.decrypt = decrypt;
- /**
- * 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
- */
-
- var Decrypter = (function () {
- function Decrypter(encrypted, key, initVector, done) {
- _classCallCheck(this, Decrypter);
-
- var step = Decrypter.STEP;
- var encrypted32 = new Int32Array(encrypted.buffer);
- var decrypted = new Uint8Array(encrypted.byteLength);
- var i = 0;
-
- this.asyncStream_ = new _asyncStream2['default']();
-
- // 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, (0, _pkcs7.unpad)(decrypted));
- });
- }
-
- /**
- * a getter for step the maximum number of bytes to process at one time
- *
- * @return {Number} the value of step 32000
- */
-
- _createClass(Decrypter, [{
- key: 'decryptChunk_',
-
- /**
- * @private
- */
- value: function decryptChunk_(encrypted, key, initVector, decrypted) {
- return function () {
- var bytes = decrypt(encrypted, key, initVector);
-
- decrypted.set(bytes, encrypted.byteOffset);
- };
- }
- }], [{
- key: 'STEP',
- get: function get() {
- // 4 * 8000;
- return 32000;
- }
- }]);
-
- return Decrypter;
- })();
-
- exports.Decrypter = Decrypter;
- exports['default'] = {
- Decrypter: Decrypter,
- decrypt: decrypt
- };
- },{"./aes":20,"./async-stream":21,"pkcs7":26}],23:[function(require,module,exports){
- /**
- * @file index.js
- *
- * Index module to easily import the primary components of AES-128
- * decryption. Like this:
- *
- * ```js
- * import {Decrypter, decrypt, AsyncStream} from 'aes-decrypter';
- * ```
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _decrypter = require('./decrypter');
-
- var _asyncStream = require('./async-stream');
-
- var _asyncStream2 = _interopRequireDefault(_asyncStream);
-
- exports['default'] = {
- decrypt: _decrypter.decrypt,
- Decrypter: _decrypter.Decrypter,
- AsyncStream: _asyncStream2['default']
- };
- module.exports = exports['default'];
- },{"./async-stream":21,"./decrypter":22}],24:[function(require,module,exports){
- arguments[4][16][0].apply(exports,arguments)
- },{"dup":16}],25:[function(require,module,exports){
- /*
- * pkcs7.pad
- * https://github.com/brightcove/pkcs7
- *
- * Copyright (c) 2014 Brightcove
- * Licensed under the apache2 license.
- */
-
- 'use strict';
-
- var PADDING;
-
- /**
- * Returns a new Uint8Array that is padded with PKCS#7 padding.
- * @param plaintext {Uint8Array} the input bytes before encryption
- * @return {Uint8Array} the padded bytes
- * @see http://tools.ietf.org/html/rfc5652
- */
- module.exports = function pad(plaintext) {
- var padding = PADDING[(plaintext.byteLength % 16) || 0],
- result = new Uint8Array(plaintext.byteLength + padding.length);
- result.set(plaintext);
- result.set(padding, plaintext.byteLength);
- return result;
- };
-
- // pre-define the padding values
- PADDING = [
- [16, 16, 16, 16,
- 16, 16, 16, 16,
- 16, 16, 16, 16,
- 16, 16, 16, 16],
-
- [15, 15, 15, 15,
- 15, 15, 15, 15,
- 15, 15, 15, 15,
- 15, 15, 15],
-
- [14, 14, 14, 14,
- 14, 14, 14, 14,
- 14, 14, 14, 14,
- 14, 14],
-
- [13, 13, 13, 13,
- 13, 13, 13, 13,
- 13, 13, 13, 13,
- 13],
-
- [12, 12, 12, 12,
- 12, 12, 12, 12,
- 12, 12, 12, 12],
-
- [11, 11, 11, 11,
- 11, 11, 11, 11,
- 11, 11, 11],
-
- [10, 10, 10, 10,
- 10, 10, 10, 10,
- 10, 10],
-
- [9, 9, 9, 9,
- 9, 9, 9, 9,
- 9],
-
- [8, 8, 8, 8,
- 8, 8, 8, 8],
-
- [7, 7, 7, 7,
- 7, 7, 7],
-
- [6, 6, 6, 6,
- 6, 6],
-
- [5, 5, 5, 5,
- 5],
-
- [4, 4, 4, 4],
-
- [3, 3, 3],
-
- [2, 2],
-
- [1]
- ];
-
- },{}],26:[function(require,module,exports){
- /*
- * pkcs7
- * https://github.com/brightcove/pkcs7
- *
- * Copyright (c) 2014 Brightcove
- * Licensed under the apache2 license.
- */
-
- 'use strict';
-
- exports.pad = require('./pad.js');
- exports.unpad = require('./unpad.js');
-
- },{"./pad.js":25,"./unpad.js":27}],27:[function(require,module,exports){
- /*
- * pkcs7.unpad
- * https://github.com/brightcove/pkcs7
- *
- * Copyright (c) 2014 Brightcove
- * Licensed under the apache2 license.
- */
-
- 'use strict';
-
- /**
- * 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
- */
- module.exports = function unpad(padded) {
- return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
- };
-
- },{}],28:[function(require,module,exports){
-
- },{}],29:[function(require,module,exports){
- (function (global){
- var topLevel = typeof global !== 'undefined' ? global :
- typeof window !== 'undefined' ? window : {}
- var minDoc = require('min-document');
-
- var doccy;
-
- if (typeof document !== 'undefined') {
- doccy = document;
- } else {
- doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];
-
- if (!doccy) {
- doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
- }
- }
-
- module.exports = doccy;
-
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"min-document":28}],30:[function(require,module,exports){
- (function (global){
- var win;
-
- if (typeof window !== "undefined") {
- win = window;
- } else if (typeof global !== "undefined") {
- win = global;
- } else if (typeof self !== "undefined"){
- win = self;
- } else {
- win = {};
- }
-
- module.exports = win;
-
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{}],31:[function(require,module,exports){
- 'use strict';
-
- var _lineStream = require('./line-stream');
-
- var _lineStream2 = _interopRequireDefault(_lineStream);
-
- var _parseStream = require('./parse-stream');
-
- var _parseStream2 = _interopRequireDefault(_parseStream);
-
- var _parser = require('./parser');
-
- var _parser2 = _interopRequireDefault(_parser);
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- module.exports = {
- LineStream: _lineStream2['default'],
- ParseStream: _parseStream2['default'],
- Parser: _parser2['default']
- }; /**
- * @file m3u8/index.js
- *
- * Utilities for parsing M3U8 files. If the entire manifest is available,
- * `Parser` will create an object representation with enough detail for managing
- * playback. `ParseStream` and `LineStream` are lower-level parsing primitives
- * that do not assume the entirety of the manifest is ready and expose a
- * ReadableStream-like interface.
- */
- },{"./line-stream":32,"./parse-stream":33,"./parser":34}],32:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
-
- var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
- var _stream = require('./stream');
-
- var _stream2 = _interopRequireDefault(_stream);
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
- function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
- * @file m3u8/line-stream.js
- */
-
-
- /**
- * A stream that buffers string input and generates a `data` event for each
- * line.
- *
- * @class LineStream
- * @extends Stream
- */
- var LineStream = function (_Stream) {
- _inherits(LineStream, _Stream);
-
- function LineStream() {
- _classCallCheck(this, LineStream);
-
- var _this = _possibleConstructorReturn(this, (LineStream.__proto__ || Object.getPrototypeOf(LineStream)).call(this));
-
- _this.buffer = '';
- return _this;
- }
-
- /**
- * Add new data to be parsed.
- *
- * @param {String} data the text to process
- */
-
-
- _createClass(LineStream, [{
- key: 'push',
- value: function push(data) {
- var nextNewline = void 0;
-
- this.buffer += data;
- nextNewline = this.buffer.indexOf('\n');
-
- for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) {
- this.trigger('data', this.buffer.substring(0, nextNewline));
- this.buffer = this.buffer.substring(nextNewline + 1);
- }
- }
- }]);
-
- return LineStream;
- }(_stream2['default']);
-
- exports['default'] = LineStream;
- },{"./stream":35}],33:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
-
- var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }();
-
- var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
- var _stream = require('./stream');
-
- var _stream2 = _interopRequireDefault(_stream);
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
- function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
- * @file m3u8/parse-stream.js
- */
-
-
- /**
- * "forgiving" attribute list psuedo-grammar:
- * attributes -> keyvalue (',' keyvalue)*
- * keyvalue -> key '=' value
- * key -> [^=]*
- * value -> '"' [^"]* '"' | [^,]*
- */
- var attributeSeparator = function attributeSeparator() {
- var key = '[^=]*';
- var value = '"[^"]*"|[^,]*';
- var keyvalue = '(?:' + key + ')=(?:' + value + ')';
-
- return new RegExp('(?:^|,)(' + keyvalue + ')');
- };
-
- /**
- * Parse attributes from a line given the seperator
- *
- * @param {String} attributes the attibute line to parse
- */
- var parseAttributes = function parseAttributes(attributes) {
- // split the string using attributes as the separator
- var attrs = attributes.split(attributeSeparator());
- var result = {};
- var i = attrs.length;
- var attr = void 0;
-
- while (i--) {
- // filter out unmatched portions of the string
- if (attrs[i] === '') {
- continue;
- }
-
- // split the key and value
- attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1);
- // trim whitespace and remove optional quotes around the value
- attr[0] = attr[0].replace(/^\s+|\s+$/g, '');
- attr[1] = attr[1].replace(/^\s+|\s+$/g, '');
- attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1');
- result[attr[0]] = attr[1];
- }
- return result;
- };
-
- /**
- * A line-level M3U8 parser event stream. It expects to receive input one
- * line at a time and performs a context-free parse of its contents. A stream
- * interpretation of a manifest can be useful if the manifest is expected to
- * be too large to fit comfortably into memory or the entirety of the input
- * is not immediately available. Otherwise, it's probably much easier to work
- * with a regular `Parser` object.
- *
- * Produces `data` events with an object that captures the parser's
- * interpretation of the input. That object has a property `tag` that is one
- * of `uri`, `comment`, or `tag`. URIs only have a single additional
- * property, `line`, which captures the entirety of the input without
- * interpretation. Comments similarly have a single additional property
- * `text` which is the input without the leading `#`.
- *
- * Tags always have a property `tagType` which is the lower-cased version of
- * the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,
- * `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized
- * tags are given the tag type `unknown` and a single additional property
- * `data` with the remainder of the input.
- *
- * @class ParseStream
- * @extends Stream
- */
-
- var ParseStream = function (_Stream) {
- _inherits(ParseStream, _Stream);
-
- function ParseStream() {
- _classCallCheck(this, ParseStream);
-
- return _possibleConstructorReturn(this, (ParseStream.__proto__ || Object.getPrototypeOf(ParseStream)).call(this));
- }
-
- /**
- * Parses an additional line of input.
- *
- * @param {String} line a single line of an M3U8 file to parse
- */
-
-
- _createClass(ParseStream, [{
- key: 'push',
- value: function push(line) {
- var match = void 0;
- var event = void 0;
-
- // strip whitespace
- line = line.replace(/^[\u0000\s]+|[\u0000\s]+$/g, '');
- if (line.length === 0) {
- // ignore empty lines
- return;
- }
-
- // URIs
- if (line[0] !== '#') {
- this.trigger('data', {
- type: 'uri',
- uri: line
- });
- return;
- }
-
- // Comments
- if (line.indexOf('#EXT') !== 0) {
- this.trigger('data', {
- type: 'comment',
- text: line.slice(1)
- });
- return;
- }
-
- // strip off any carriage returns here so the regex matching
- // doesn't have to account for them.
- line = line.replace('\r', '');
-
- // Tags
- match = /^#EXTM3U/.exec(line);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'm3u'
- });
- return;
- }
- match = /^#EXTINF:?([0-9\.]*)?,?(.*)?$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'inf'
- };
- if (match[1]) {
- event.duration = parseFloat(match[1]);
- }
- if (match[2]) {
- event.title = match[2];
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-TARGETDURATION:?([0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'targetduration'
- };
- if (match[1]) {
- event.duration = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#ZEN-TOTAL-DURATION:?([0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'totalduration'
- };
- if (match[1]) {
- event.duration = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-VERSION:?([0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'version'
- };
- if (match[1]) {
- event.version = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MEDIA-SEQUENCE:?(\-?[0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'media-sequence'
- };
- if (match[1]) {
- event.number = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-DISCONTINUITY-SEQUENCE:?(\-?[0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'discontinuity-sequence'
- };
- if (match[1]) {
- event.number = parseInt(match[1], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-PLAYLIST-TYPE:?(.*)?$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'playlist-type'
- };
- if (match[1]) {
- event.playlistType = match[1];
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-BYTERANGE:?([0-9.]*)?@?([0-9.]*)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'byterange'
- };
- if (match[1]) {
- event.length = parseInt(match[1], 10);
- }
- if (match[2]) {
- event.offset = parseInt(match[2], 10);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-ALLOW-CACHE:?(YES|NO)?/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'allow-cache'
- };
- if (match[1]) {
- event.allowed = !/NO/.test(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MAP:?(.*)$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'map'
- };
-
- if (match[1]) {
- var attributes = parseAttributes(match[1]);
-
- if (attributes.URI) {
- event.uri = attributes.URI;
- }
- if (attributes.BYTERANGE) {
- var _attributes$BYTERANGE = attributes.BYTERANGE.split('@'),
- _attributes$BYTERANGE2 = _slicedToArray(_attributes$BYTERANGE, 2),
- length = _attributes$BYTERANGE2[0],
- offset = _attributes$BYTERANGE2[1];
-
- event.byterange = {};
- if (length) {
- event.byterange.length = parseInt(length, 10);
- }
- if (offset) {
- event.byterange.offset = parseInt(offset, 10);
- }
- }
- }
-
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-STREAM-INF:?(.*)$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'stream-inf'
- };
- if (match[1]) {
- event.attributes = parseAttributes(match[1]);
-
- if (event.attributes.RESOLUTION) {
- var split = event.attributes.RESOLUTION.split('x');
- var resolution = {};
-
- if (split[0]) {
- resolution.width = parseInt(split[0], 10);
- }
- if (split[1]) {
- resolution.height = parseInt(split[1], 10);
- }
- event.attributes.RESOLUTION = resolution;
- }
- if (event.attributes.BANDWIDTH) {
- event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);
- }
- if (event.attributes['PROGRAM-ID']) {
- event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);
- }
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-MEDIA:?(.*)$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'media'
- };
- if (match[1]) {
- event.attributes = parseAttributes(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-ENDLIST/.exec(line);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'endlist'
- });
- return;
- }
- match = /^#EXT-X-DISCONTINUITY/.exec(line);
- if (match) {
- this.trigger('data', {
- type: 'tag',
- tagType: 'discontinuity'
- });
- return;
- }
- match = /^#EXT-X-PROGRAM-DATE-TIME:?(.*)$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'program-date-time'
- };
- if (match[1]) {
- event.dateTimeString = match[1];
- event.dateTimeObject = new Date(match[1]);
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-KEY:?(.*)$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'key'
- };
- if (match[1]) {
- event.attributes = parseAttributes(match[1]);
- // parse the IV string into a Uint32Array
- if (event.attributes.IV) {
- if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {
- event.attributes.IV = event.attributes.IV.substring(2);
- }
-
- event.attributes.IV = event.attributes.IV.match(/.{8}/g);
- event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);
- event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);
- event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);
- event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);
- event.attributes.IV = new Uint32Array(event.attributes.IV);
- }
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-OUT-CONT:?(.*)?$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-out-cont'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-OUT:?(.*)?$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-out'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
- match = /^#EXT-X-CUE-IN:?(.*)?$/.exec(line);
- if (match) {
- event = {
- type: 'tag',
- tagType: 'cue-in'
- };
- if (match[1]) {
- event.data = match[1];
- } else {
- event.data = '';
- }
- this.trigger('data', event);
- return;
- }
-
- // unknown tag type
- this.trigger('data', {
- type: 'tag',
- data: line.slice(4)
- });
- }
- }]);
-
- return ParseStream;
- }(_stream2['default']);
-
- exports['default'] = ParseStream;
- },{"./stream":35}],34:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
-
- var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };
-
- var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
- var _stream = require('./stream');
-
- var _stream2 = _interopRequireDefault(_stream);
-
- var _lineStream = require('./line-stream');
-
- var _lineStream2 = _interopRequireDefault(_lineStream);
-
- var _parseStream = require('./parse-stream');
-
- var _parseStream2 = _interopRequireDefault(_parseStream);
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
- function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
- * @file m3u8/parser.js
- */
-
-
- /**
- * A parser for M3U8 files. The current interpretation of the input is
- * exposed as a property `manifest` on parser objects. It's just two lines to
- * create and parse a manifest once you have the contents available as a string:
- *
- * ```js
- * var parser = new m3u8.Parser();
- * parser.push(xhr.responseText);
- * ```
- *
- * New input can later be applied to update the manifest object by calling
- * `push` again.
- *
- * The parser attempts to create a usable manifest object even if the
- * underlying input is somewhat nonsensical. It emits `info` and `warning`
- * events during the parse if it encounters input that seems invalid or
- * requires some property of the manifest object to be defaulted.
- *
- * @class Parser
- * @extends Stream
- */
- var Parser = function (_Stream) {
- _inherits(Parser, _Stream);
-
- function Parser() {
- _classCallCheck(this, Parser);
-
- var _this = _possibleConstructorReturn(this, (Parser.__proto__ || Object.getPrototypeOf(Parser)).call(this));
-
- _this.lineStream = new _lineStream2['default']();
- _this.parseStream = new _parseStream2['default']();
- _this.lineStream.pipe(_this.parseStream);
- /* eslint-disable consistent-this */
- var self = _this;
- /* eslint-enable consistent-this */
- var uris = [];
- var currentUri = {};
- // if specified, the active EXT-X-MAP definition
- var currentMap = void 0;
- // if specified, the active decryption key
- var _key = void 0;
- var noop = function noop() {};
- var defaultMediaGroups = {
- 'AUDIO': {},
- 'VIDEO': {},
- 'CLOSED-CAPTIONS': {},
- 'SUBTITLES': {}
- };
- // group segments into numbered timelines delineated by discontinuities
- var currentTimeline = 0;
-
- // the manifest is empty until the parse stream begins delivering data
- _this.manifest = {
- allowCache: true,
- discontinuityStarts: [],
- segments: []
- };
-
- // update the manifest with the m3u8 entry from the parse stream
- _this.parseStream.on('data', function (entry) {
- var mediaGroup = void 0;
- var rendition = void 0;
-
- ({
- tag: function tag() {
- // switch based on the tag type
- (({
- 'allow-cache': function allowCache() {
- this.manifest.allowCache = entry.allowed;
- if (!('allowed' in entry)) {
- this.trigger('info', {
- message: 'defaulting allowCache to YES'
- });
- this.manifest.allowCache = true;
- }
- },
- byterange: function byterange() {
- var byterange = {};
-
- if ('length' in entry) {
- currentUri.byterange = byterange;
- byterange.length = entry.length;
-
- if (!('offset' in entry)) {
- this.trigger('info', {
- message: 'defaulting offset to zero'
- });
- entry.offset = 0;
- }
- }
- if ('offset' in entry) {
- currentUri.byterange = byterange;
- byterange.offset = entry.offset;
- }
- },
- endlist: function endlist() {
- this.manifest.endList = true;
- },
- inf: function inf() {
- if (!('mediaSequence' in this.manifest)) {
- this.manifest.mediaSequence = 0;
- this.trigger('info', {
- message: 'defaulting media sequence to zero'
- });
- }
- if (!('discontinuitySequence' in this.manifest)) {
- this.manifest.discontinuitySequence = 0;
- this.trigger('info', {
- message: 'defaulting discontinuity sequence to zero'
- });
- }
- if (entry.duration > 0) {
- currentUri.duration = entry.duration;
- }
-
- if (entry.duration === 0) {
- currentUri.duration = 0.01;
- this.trigger('info', {
- message: 'updating zero segment duration to a small value'
- });
- }
-
- this.manifest.segments = uris;
- },
- key: function key() {
- if (!entry.attributes) {
- this.trigger('warn', {
- message: 'ignoring key declaration without attribute list'
- });
- return;
- }
- // clear the active encryption key
- if (entry.attributes.METHOD === 'NONE') {
- _key = null;
- return;
- }
- if (!entry.attributes.URI) {
- this.trigger('warn', {
- message: 'ignoring key declaration without URI'
- });
- return;
- }
- if (!entry.attributes.METHOD) {
- this.trigger('warn', {
- message: 'defaulting key method to AES-128'
- });
- }
-
- // setup an encryption key for upcoming segments
- _key = {
- method: entry.attributes.METHOD || 'AES-128',
- uri: entry.attributes.URI
- };
-
- if (typeof entry.attributes.IV !== 'undefined') {
- _key.iv = entry.attributes.IV;
- }
- },
- 'media-sequence': function mediaSequence() {
- if (!isFinite(entry.number)) {
- this.trigger('warn', {
- message: 'ignoring invalid media sequence: ' + entry.number
- });
- return;
- }
- this.manifest.mediaSequence = entry.number;
- },
- 'discontinuity-sequence': function discontinuitySequence() {
- if (!isFinite(entry.number)) {
- this.trigger('warn', {
- message: 'ignoring invalid discontinuity sequence: ' + entry.number
- });
- return;
- }
- this.manifest.discontinuitySequence = entry.number;
- currentTimeline = entry.number;
- },
- 'playlist-type': function playlistType() {
- if (!/VOD|EVENT/.test(entry.playlistType)) {
- this.trigger('warn', {
- message: 'ignoring unknown playlist type: ' + entry.playlist
- });
- return;
- }
- this.manifest.playlistType = entry.playlistType;
- },
- map: function map() {
- currentMap = {};
- if (entry.uri) {
- currentMap.uri = entry.uri;
- }
- if (entry.byterange) {
- currentMap.byterange = entry.byterange;
- }
- },
- 'stream-inf': function streamInf() {
- this.manifest.playlists = uris;
- this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
-
- if (!entry.attributes) {
- this.trigger('warn', {
- message: 'ignoring empty stream-inf attributes'
- });
- return;
- }
-
- if (!currentUri.attributes) {
- currentUri.attributes = {};
- }
- _extends(currentUri.attributes, entry.attributes);
- },
- media: function media() {
- this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
-
- if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {
- this.trigger('warn', {
- message: 'ignoring incomplete or missing media group'
- });
- return;
- }
-
- // find the media group, creating defaults as necessary
- var mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];
-
- mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};
- mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']];
-
- // collect the rendition metadata
- rendition = {
- 'default': /yes/i.test(entry.attributes.DEFAULT)
- };
- if (rendition['default']) {
- rendition.autoselect = true;
- } else {
- rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);
- }
- if (entry.attributes.LANGUAGE) {
- rendition.language = entry.attributes.LANGUAGE;
- }
- if (entry.attributes.URI) {
- rendition.uri = entry.attributes.URI;
- }
- if (entry.attributes['INSTREAM-ID']) {
- rendition.instreamId = entry.attributes['INSTREAM-ID'];
- }
- if (entry.attributes.CHARACTERISTICS) {
- rendition.characteristics = entry.attributes.CHARACTERISTICS;
- }
- if (entry.attributes.FORCED) {
- rendition.forced = /yes/i.test(entry.attributes.FORCED);
- }
-
- // insert the new rendition
- mediaGroup[entry.attributes.NAME] = rendition;
- },
- discontinuity: function discontinuity() {
- currentTimeline += 1;
- currentUri.discontinuity = true;
- this.manifest.discontinuityStarts.push(uris.length);
- },
- 'program-date-time': function programDateTime() {
- this.manifest.dateTimeString = entry.dateTimeString;
- this.manifest.dateTimeObject = entry.dateTimeObject;
- },
- targetduration: function targetduration() {
- if (!isFinite(entry.duration) || entry.duration < 0) {
- this.trigger('warn', {
- message: 'ignoring invalid target duration: ' + entry.duration
- });
- return;
- }
- this.manifest.targetDuration = entry.duration;
- },
- totalduration: function totalduration() {
- if (!isFinite(entry.duration) || entry.duration < 0) {
- this.trigger('warn', {
- message: 'ignoring invalid total duration: ' + entry.duration
- });
- return;
- }
- this.manifest.totalDuration = entry.duration;
- },
- 'cue-out': function cueOut() {
- currentUri.cueOut = entry.data;
- },
- 'cue-out-cont': function cueOutCont() {
- currentUri.cueOutCont = entry.data;
- },
- 'cue-in': function cueIn() {
- currentUri.cueIn = entry.data;
- }
- })[entry.tagType] || noop).call(self);
- },
- uri: function uri() {
- currentUri.uri = entry.uri;
- uris.push(currentUri);
-
- // if no explicit duration was declared, use the target duration
- if (this.manifest.targetDuration && !('duration' in currentUri)) {
- this.trigger('warn', {
- message: 'defaulting segment duration to the target duration'
- });
- currentUri.duration = this.manifest.targetDuration;
- }
- // annotate with encryption information, if necessary
- if (_key) {
- currentUri.key = _key;
- }
- currentUri.timeline = currentTimeline;
- // annotate with initialization segment information, if necessary
- if (currentMap) {
- currentUri.map = currentMap;
- }
-
- // prepare for the next URI
- currentUri = {};
- },
- comment: function comment() {
- // comments are not important for playback
- }
- })[entry.type].call(self);
- });
-
- return _this;
- }
-
- /**
- * Parse the input string and update the manifest object.
- *
- * @param {String} chunk a potentially incomplete portion of the manifest
- */
-
-
- _createClass(Parser, [{
- key: 'push',
- value: function push(chunk) {
- this.lineStream.push(chunk);
- }
-
- /**
- * Flush any remaining input. This can be handy if the last line of an M3U8
- * manifest did not contain a trailing newline but the file has been
- * completely received.
- */
-
- }, {
- key: 'end',
- value: function end() {
- // flush any buffered input
- this.lineStream.push('\n');
- }
- }]);
-
- return Parser;
- }(_stream2['default']);
-
- exports['default'] = Parser;
- },{"./line-stream":32,"./parse-stream":33,"./stream":35}],35:[function(require,module,exports){
- 'use strict';
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
-
- var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
-
- /**
- * @file stream.js
- */
- /**
- * A lightweight readable stream implemention that handles event dispatching.
- *
- * @class Stream
- */
- var Stream = function () {
- function Stream() {
- _classCallCheck(this, 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
- */
-
-
- _createClass(Stream, [{
- key: 'on',
- value: 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
- */
-
- }, {
- key: 'off',
- value: function off(type, listener) {
- if (!this.listeners[type]) {
- return false;
- }
-
- var index = this.listeners[type].indexOf(listener);
-
- 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
- */
-
- }, {
- key: 'trigger',
- value: function trigger(type) {
- var callbacks = this.listeners[type];
- var i = void 0;
- var length = void 0;
- var args = void 0;
-
- 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 = Array.prototype.slice.call(arguments, 1);
- length = callbacks.length;
- for (i = 0; i < length; ++i) {
- callbacks[i].apply(this, args);
- }
- }
- }
-
- /**
- * Destroys the stream and cleans up.
- */
-
- }, {
- key: 'dispose',
- value: 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
- */
-
- }, {
- key: 'pipe',
- value: function pipe(destination) {
- this.on('data', function (data) {
- destination.push(data);
- });
- }
- }]);
-
- return Stream;
- }();
-
- exports['default'] = Stream;
- },{}],36:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2016 Brightcove
- * All rights reserved.
- *
- * 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.
- */
- 'use strict';
- var Stream = require('../utils/stream.js');
-
- // Constants
- var AacStream;
-
- /**
- * Splits an incoming stream of binary data into ADTS and ID3 Frames.
- */
-
- AacStream = function() {
- var
- everything = new Uint8Array(),
- timeStamp = 0;
-
- AacStream.prototype.init.call(this);
-
- this.setTimestamp = function(timestamp) {
- timeStamp = timestamp;
- };
-
- this.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 (footerPresent) {
- return returnSize + 20;
- }
- return returnSize + 10;
- };
-
- this.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;
- };
-
- 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 = this.parseId3TagSize(everything, byteIndex);
-
- // Exit early if we don't have enough in the buffer
- // to emit a full packet
- if (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 = this.parseAdtsSize(everything, byteIndex);
-
- // Exit early if we don't have enough in the buffer
- // to emit a full packet
- if (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();
- }
- };
- };
-
- AacStream.prototype = new Stream();
-
- module.exports = AacStream;
-
- },{"../utils/stream.js":60}],37:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2016 Brightcove
- * All rights reserved.
- *
- * Utilities to detect basic properties and metadata about Aac data.
- */
- 'use strict';
-
- var ADTS_SAMPLING_FREQUENCIES = [
- 96000,
- 88200,
- 64000,
- 48000,
- 44100,
- 32000,
- 24000,
- 22050,
- 16000,
- 12000,
- 11025,
- 8000,
- 7350
- ];
-
- 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 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 (footerPresent) {
- return returnSize + 20;
- }
- return returnSize + 10;
- };
-
- 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 = 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;
- };
-
- module.exports = {
- parseId3TagSize: parseId3TagSize,
- parseAdtsSize: parseAdtsSize,
- parseType: parseType,
- parseSampleRate: parseSampleRate,
- parseAacTimestamp: parseAacTimestamp
- };
-
- },{}],38:[function(require,module,exports){
- 'use strict';
-
- var Stream = require('../utils/stream.js');
-
- var AdtsStream;
-
- var
- ADTS_SAMPLING_FREQUENCIES = [
- 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 = function() {
- var buffer;
-
- AdtsStream.prototype.init.call(this);
-
- this.push = function(packet) {
- var
- i = 0,
- frameNum = 0,
- frameLength,
- protectionSkipBytes,
- frameEnd,
- oldBuffer,
- sampleCount,
- adtsFrameDuration;
-
- 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) {
- 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
- while (i + 5 < buffer.length) {
-
- // Loook for the start of an ADTS header..
- if (buffer[i] !== 0xFF || (buffer[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;
- }
-
- // 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
- frameLength = ((buffer[i + 3] & 0x03) << 11) |
- (buffer[i + 4] << 3) |
- ((buffer[i + 5] & 0xe0) >> 5);
-
- sampleCount = ((buffer[i + 6] & 0x03) + 1) * 1024;
- adtsFrameDuration = (sampleCount * 90000) /
- ADTS_SAMPLING_FREQUENCIES[(buffer[i + 2] & 0x3c) >>> 2];
-
- frameEnd = i + frameLength;
-
- // If we don't have enough data to actually finish this ADTS frame, return
- // and wait for more data
- if (buffer.byteLength < frameEnd) {
- return;
- }
-
- // 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[(buffer[i + 2] & 0x3c) >>> 2],
- samplingfrequencyindex: (buffer[i + 2] & 0x3c) >>> 2,
- // assume ISO/IEC 14496-12 AudioSampleEntry default of 16
- samplesize: 16,
- data: buffer.subarray(i + 7 + protectionSkipBytes, frameEnd)
- });
-
- // If the buffer is empty, clear it and return
- if (buffer.byteLength === frameEnd) {
- buffer = undefined;
- return;
- }
-
- frameNum++;
-
- // Remove the finished frame from the buffer and start the process again
- buffer = buffer.subarray(frameEnd);
- }
- };
- this.flush = function() {
- this.trigger('done');
- };
- };
-
- AdtsStream.prototype = new Stream();
-
- module.exports = AdtsStream;
-
- },{"../utils/stream.js":60}],39:[function(require,module,exports){
- 'use strict';
-
- var Stream = require('../utils/stream.js');
- var ExpGolomb = require('../utils/exp-golomb.js');
-
- var H264Stream, 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);
-
- 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;
- }
-
- // 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 < buffer.byteLength - 3; syncPoint++) {
- if (buffer[syncPoint + 2] === 1) {
- // the sync point is properly aligned
- i = syncPoint + 5;
- break;
- }
- }
-
- while (i < buffer.byteLength) {
- // 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 < buffer.length);
- 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.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');
- };
- };
- NalByteStream.prototype = new Stream();
-
- // 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,
- 138: true,
- 139: true,
- 134: true
- };
-
- /**
- * Accepts input from a ElementaryStream and produces H.264 NAL unit data
- * events.
- */
- H264Stream = function() {
- var
- nalByteStream = new NalByteStream(),
- self,
- trackId,
- currentPts,
- currentDts,
-
- discardEmulationPreventionBytes,
- readSequenceParameterSet,
- skipScalingList;
-
- H264Stream.prototype.init.call(this);
- self = this;
-
- this.push = function(packet) {
- if (packet.type !== 'video') {
- return;
- }
- trackId = packet.trackId;
- currentPts = packet.pts;
- currentDts = packet.dts;
-
- nalByteStream.push(packet);
- };
-
- nalByteStream.on('data', function(data) {
- var
- event = {
- trackId: trackId,
- pts: currentPts,
- dts: currentDts,
- data: data
- };
-
- switch (data[0] & 0x1f) {
- 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;
-
- default:
- break;
- }
- self.trigger('data', event);
- });
- nalByteStream.on('done', function() {
- self.trigger('done');
- });
-
- this.flush = function() {
- nalByteStream.flush();
- };
-
- /**
- * 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,
- sarScale = 1,
- expGolombDecoder, profileIdc, levelIdc, profileCompatibility,
- chromaFormatIdc, picOrderCntType,
- numRefFramesInPicOrderCntCycle, picWidthInMbsMinus1,
- picHeightInMapUnitsMinus1,
- frameMbsOnlyFlag,
- scalingListCount,
- sarRatio,
- 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) {
- sarScale = sarRatio[0] / sarRatio[1];
- }
- }
- }
- return {
- profileIdc: profileIdc,
- levelIdc: levelIdc,
- profileCompatibility: profileCompatibility,
- width: Math.ceil((((picWidthInMbsMinus1 + 1) * 16) - frameCropLeftOffset * 2 - frameCropRightOffset * 2) * sarScale),
- height: ((2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16) - (frameCropTopOffset * 2) - (frameCropBottomOffset * 2)
- };
- };
-
- };
- H264Stream.prototype = new Stream();
-
- module.exports = {
- H264Stream: H264Stream,
- NalByteStream: NalByteStream
- };
-
- },{"../utils/exp-golomb.js":59,"../utils/stream.js":60}],40:[function(require,module,exports){
- 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;
- }, {});
- };
-
- // 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]]
- };
-
- module.exports = makeTable(coneOfSilence);
-
- },{}],41:[function(require,module,exports){
- 'use strict';
-
- var Stream = require('../utils/stream.js');
-
- /**
- * The final stage of the transmuxer that emits the flv tags
- * for audio, video, and metadata. Also tranlates in time and
- * outputs caption data and id3 cues.
- */
- var CoalesceStream = function(options) {
- // Number of Tracks per output segment
- // If greater than 1, we combine multiple
- // tracks into a single segment
- this.numberOfTracks = 0;
- this.metadataStream = options.metadataStream;
-
- this.videoTags = [];
- this.audioTags = [];
- this.videoTrack = null;
- this.audioTrack = null;
- this.pendingCaptions = [];
- this.pendingMetadata = [];
- this.pendingTracks = 0;
- this.processedTracks = 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.text) {
- return this.pendingCaptions.push(output);
- }
- // buffer incoming id3 tags until the final flush
- if (output.frames) {
- return this.pendingMetadata.push(output);
- }
-
- if (output.track.type === 'video') {
- this.videoTrack = output.track;
- this.videoTags = output.tags;
- this.pendingTracks++;
- }
- if (output.track.type === 'audio') {
- this.audioTrack = output.track;
- this.audioTags = output.tags;
- this.pendingTracks++;
- }
- };
- };
-
- CoalesceStream.prototype = new Stream();
- CoalesceStream.prototype.flush = function(flushSource) {
- var
- id3,
- caption,
- i,
- timelineStartPts,
- event = {
- tags: {},
- captions: [],
- metadata: []
- };
-
- if (this.pendingTracks < 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.pendingTracks === 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.processedTracks++;
-
- if (this.processedTracks < this.numberOfTracks) {
- return;
- }
- }
- }
-
- this.processedTracks += this.pendingTracks;
- this.pendingTracks = 0;
-
- if (this.processedTracks < this.numberOfTracks) {
- return;
- }
-
- if (this.videoTrack) {
- timelineStartPts = this.videoTrack.timelineStartInfo.pts;
- } else if (this.audioTrack) {
- timelineStartPts = this.audioTrack.timelineStartInfo.pts;
- }
-
- event.tags.videoTags = this.videoTags;
- event.tags.audioTags = this.audioTags;
-
- // Translate caption PTS times into second offsets into the
- // video timeline for the segment
- for (i = 0; i < this.pendingCaptions.length; i++) {
- caption = this.pendingCaptions[i];
- caption.startTime = caption.startPts - timelineStartPts;
- caption.startTime /= 90e3;
- caption.endTime = caption.endPts - timelineStartPts;
- caption.endTime /= 90e3;
- event.captions.push(caption);
- }
-
- // Translate ID3 frame PTS times into second offsets into the
- // video timeline for the segment
- for (i = 0; i < this.pendingMetadata.length; i++) {
- id3 = this.pendingMetadata[i];
- id3.cueTime = id3.pts - timelineStartPts;
- id3.cueTime /= 90e3;
- 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.videoTrack = null;
- this.audioTrack = null;
- this.videoTags = [];
- this.audioTags = [];
- this.pendingCaptions.length = 0;
- this.pendingMetadata.length = 0;
- this.pendingTracks = 0;
- this.processedTracks = 0;
-
- // Emit the final segment
- this.trigger('data', event);
-
- this.trigger('done');
- };
-
- module.exports = CoalesceStream;
-
- },{"../utils/stream.js":60}],42:[function(require,module,exports){
- 'use strict';
-
- var FlvTag = require('./flv-tag.js');
-
- // For information on the FLV format, see
- // http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf.
- // Technically, this function returns the header and a metadata FLV tag
- // if duration is greater than zero
- // duration in seconds
- // @return {object} the bytes of the FLV header as a Uint8Array
- var getFlvHeader = function(duration, audio, video) { // :ByteArray {
- var
- headBytes = new Uint8Array(3 + 1 + 1 + 4),
- head = new DataView(headBytes.buffer),
- metadata,
- result,
- metadataLength;
-
- // default arguments
- duration = duration || 0;
- audio = audio === undefined ? true : audio;
- video = video === undefined ? true : video;
-
- // signature
- head.setUint8(0, 0x46); // 'F'
- head.setUint8(1, 0x4c); // 'L'
- head.setUint8(2, 0x56); // 'V'
-
- // version
- head.setUint8(3, 0x01);
-
- // flags
- head.setUint8(4, (audio ? 0x04 : 0x00) | (video ? 0x01 : 0x00));
-
- // data offset, should be 9 for FLV v1
- head.setUint32(5, headBytes.byteLength);
-
- // init the first FLV tag
- if (duration <= 0) {
- // no duration available so just write the first field of the first
- // FLV tag
- result = new Uint8Array(headBytes.byteLength + 4);
- result.set(headBytes);
- result.set([0, 0, 0, 0], headBytes.byteLength);
- return result;
- }
-
- // write out the duration metadata tag
- metadata = new FlvTag(FlvTag.METADATA_TAG);
- metadata.pts = metadata.dts = 0;
- metadata.writeMetaDataDouble('duration', duration);
- metadataLength = metadata.finalize().length;
- result = new Uint8Array(headBytes.byteLength + metadataLength);
- result.set(headBytes);
- result.set(head.byteLength, metadataLength);
-
- return result;
- };
-
- module.exports = getFlvHeader;
-
- },{"./flv-tag.js":43}],43:[function(require,module,exports){
- /**
- * An object that stores the bytes of an FLV tag and methods for
- * querying and manipulating that data.
- * @see http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf
- */
- 'use strict';
-
- var FlvTag;
-
- // (type:uint, extraData:Boolean = false) extends ByteArray
- FlvTag = function(type, extraData) {
- var
- // Counter if this is a metadata tag, nal start marker if this is a video
- // tag. unused if this is an audio tag
- adHoc = 0, // :uint
-
- // The default size is 16kb but this is not enough to hold iframe
- // data and the resizing algorithm costs a bit so we create a larger
- // starting buffer for video tags
- bufferStartSize = 16384,
-
- // checks whether the FLV tag has enough capacity to accept the proposed
- // write and re-allocates the internal buffers if necessary
- prepareWrite = function(flv, count) {
- var
- bytes,
- minLength = flv.position + count;
- if (minLength < flv.bytes.byteLength) {
- // there's enough capacity so do nothing
- return;
- }
-
- // allocate a new buffer and copy over the data that will not be modified
- bytes = new Uint8Array(minLength * 2);
- bytes.set(flv.bytes.subarray(0, flv.position), 0);
- flv.bytes = bytes;
- flv.view = new DataView(flv.bytes.buffer);
- },
-
- // commonly used metadata properties
- widthBytes = FlvTag.widthBytes || new Uint8Array('width'.length),
- heightBytes = FlvTag.heightBytes || new Uint8Array('height'.length),
- videocodecidBytes = FlvTag.videocodecidBytes || new Uint8Array('videocodecid'.length),
- i;
-
- if (!FlvTag.widthBytes) {
- // calculating the bytes of common metadata names ahead of time makes the
- // corresponding writes faster because we don't have to loop over the
- // characters
- // re-test with test/perf.html if you're planning on changing this
- for (i = 0; i < 'width'.length; i++) {
- widthBytes[i] = 'width'.charCodeAt(i);
- }
- for (i = 0; i < 'height'.length; i++) {
- heightBytes[i] = 'height'.charCodeAt(i);
- }
- for (i = 0; i < 'videocodecid'.length; i++) {
- videocodecidBytes[i] = 'videocodecid'.charCodeAt(i);
- }
-
- FlvTag.widthBytes = widthBytes;
- FlvTag.heightBytes = heightBytes;
- FlvTag.videocodecidBytes = videocodecidBytes;
- }
-
- this.keyFrame = false; // :Boolean
-
- switch (type) {
- case FlvTag.VIDEO_TAG:
- this.length = 16;
- // Start the buffer at 256k
- bufferStartSize *= 6;
- break;
- case FlvTag.AUDIO_TAG:
- this.length = 13;
- this.keyFrame = true;
- break;
- case FlvTag.METADATA_TAG:
- this.length = 29;
- this.keyFrame = true;
- break;
- default:
- throw new Error('Unknown FLV tag type');
- }
-
- this.bytes = new Uint8Array(bufferStartSize);
- this.view = new DataView(this.bytes.buffer);
- this.bytes[0] = type;
- this.position = this.length;
- this.keyFrame = extraData; // Defaults to false
-
- // presentation timestamp
- this.pts = 0;
- // decoder timestamp
- this.dts = 0;
-
- // ByteArray#writeBytes(bytes:ByteArray, offset:uint = 0, length:uint = 0)
- this.writeBytes = function(bytes, offset, length) {
- var
- start = offset || 0,
- end;
- length = length || bytes.byteLength;
- end = start + length;
-
- prepareWrite(this, length);
- this.bytes.set(bytes.subarray(start, end), this.position);
-
- this.position += length;
- this.length = Math.max(this.length, this.position);
- };
-
- // ByteArray#writeByte(value:int):void
- this.writeByte = function(byte) {
- prepareWrite(this, 1);
- this.bytes[this.position] = byte;
- this.position++;
- this.length = Math.max(this.length, this.position);
- };
-
- // ByteArray#writeShort(value:int):void
- this.writeShort = function(short) {
- prepareWrite(this, 2);
- this.view.setUint16(this.position, short);
- this.position += 2;
- this.length = Math.max(this.length, this.position);
- };
-
- // Negative index into array
- // (pos:uint):int
- this.negIndex = function(pos) {
- return this.bytes[this.length - pos];
- };
-
- // The functions below ONLY work when this[0] == VIDEO_TAG.
- // We are not going to check for that because we dont want the overhead
- // (nal:ByteArray = null):int
- this.nalUnitSize = function() {
- if (adHoc === 0) {
- return 0;
- }
-
- return this.length - (adHoc + 4);
- };
-
- this.startNalUnit = function() {
- // remember position and add 4 bytes
- if (adHoc > 0) {
- throw new Error('Attempted to create new NAL wihout closing the old one');
- }
-
- // reserve 4 bytes for nal unit size
- adHoc = this.length;
- this.length += 4;
- this.position = this.length;
- };
-
- // (nal:ByteArray = null):void
- this.endNalUnit = function(nalContainer) {
- var
- nalStart, // :uint
- nalLength; // :uint
-
- // Rewind to the marker and write the size
- if (this.length === adHoc + 4) {
- // we started a nal unit, but didnt write one, so roll back the 4 byte size value
- this.length -= 4;
- } else if (adHoc > 0) {
- nalStart = adHoc + 4;
- nalLength = this.length - nalStart;
-
- this.position = adHoc;
- this.view.setUint32(this.position, nalLength);
- this.position = this.length;
-
- if (nalContainer) {
- // Add the tag to the NAL unit
- nalContainer.push(this.bytes.subarray(nalStart, nalStart + nalLength));
- }
- }
-
- adHoc = 0;
- };
-
- /**
- * Write out a 64-bit floating point valued metadata property. This method is
- * called frequently during a typical parse and needs to be fast.
- */
- // (key:String, val:Number):void
- this.writeMetaDataDouble = function(key, val) {
- var i;
- prepareWrite(this, 2 + key.length + 9);
-
- // write size of property name
- this.view.setUint16(this.position, key.length);
- this.position += 2;
-
- // this next part looks terrible but it improves parser throughput by
- // 10kB/s in my testing
-
- // write property name
- if (key === 'width') {
- this.bytes.set(widthBytes, this.position);
- this.position += 5;
- } else if (key === 'height') {
- this.bytes.set(heightBytes, this.position);
- this.position += 6;
- } else if (key === 'videocodecid') {
- this.bytes.set(videocodecidBytes, this.position);
- this.position += 12;
- } else {
- for (i = 0; i < key.length; i++) {
- this.bytes[this.position] = key.charCodeAt(i);
- this.position++;
- }
- }
-
- // skip null byte
- this.position++;
-
- // write property value
- this.view.setFloat64(this.position, val);
- this.position += 8;
-
- // update flv tag length
- this.length = Math.max(this.length, this.position);
- ++adHoc;
- };
-
- // (key:String, val:Boolean):void
- this.writeMetaDataBoolean = function(key, val) {
- var i;
- prepareWrite(this, 2);
- this.view.setUint16(this.position, key.length);
- this.position += 2;
- for (i = 0; i < key.length; i++) {
- // if key.charCodeAt(i) >= 255, handle error
- prepareWrite(this, 1);
- this.bytes[this.position] = key.charCodeAt(i);
- this.position++;
- }
- prepareWrite(this, 2);
- this.view.setUint8(this.position, 0x01);
- this.position++;
- this.view.setUint8(this.position, val ? 0x01 : 0x00);
- this.position++;
- this.length = Math.max(this.length, this.position);
- ++adHoc;
- };
-
- // ():ByteArray
- this.finalize = function() {
- var
- dtsDelta, // :int
- len; // :int
-
- switch (this.bytes[0]) {
- // Video Data
- case FlvTag.VIDEO_TAG:
- // We only support AVC, 1 = key frame (for AVC, a seekable
- // frame), 2 = inter frame (for AVC, a non-seekable frame)
- this.bytes[11] = ((this.keyFrame || extraData) ? 0x10 : 0x20) | 0x07;
- this.bytes[12] = extraData ? 0x00 : 0x01;
-
- dtsDelta = this.pts - this.dts;
- this.bytes[13] = (dtsDelta & 0x00FF0000) >>> 16;
- this.bytes[14] = (dtsDelta & 0x0000FF00) >>> 8;
- this.bytes[15] = (dtsDelta & 0x000000FF) >>> 0;
- break;
-
- case FlvTag.AUDIO_TAG:
- this.bytes[11] = 0xAF; // 44 kHz, 16-bit stereo
- this.bytes[12] = extraData ? 0x00 : 0x01;
- break;
-
- case FlvTag.METADATA_TAG:
- this.position = 11;
- this.view.setUint8(this.position, 0x02); // String type
- this.position++;
- this.view.setUint16(this.position, 0x0A); // 10 Bytes
- this.position += 2;
- // set "onMetaData"
- this.bytes.set([0x6f, 0x6e, 0x4d, 0x65,
- 0x74, 0x61, 0x44, 0x61,
- 0x74, 0x61], this.position);
- this.position += 10;
- this.bytes[this.position] = 0x08; // Array type
- this.position++;
- this.view.setUint32(this.position, adHoc);
- this.position = this.length;
- this.bytes.set([0, 0, 9], this.position);
- this.position += 3; // End Data Tag
- this.length = this.position;
- break;
- }
-
- len = this.length - 11;
-
- // write the DataSize field
- this.bytes[ 1] = (len & 0x00FF0000) >>> 16;
- this.bytes[ 2] = (len & 0x0000FF00) >>> 8;
- this.bytes[ 3] = (len & 0x000000FF) >>> 0;
- // write the Timestamp
- this.bytes[ 4] = (this.dts & 0x00FF0000) >>> 16;
- this.bytes[ 5] = (this.dts & 0x0000FF00) >>> 8;
- this.bytes[ 6] = (this.dts & 0x000000FF) >>> 0;
- this.bytes[ 7] = (this.dts & 0xFF000000) >>> 24;
- // write the StreamID
- this.bytes[ 8] = 0;
- this.bytes[ 9] = 0;
- this.bytes[10] = 0;
-
- // Sometimes we're at the end of the view and have one slot to write a
- // uint32, so, prepareWrite of count 4, since, view is uint8
- prepareWrite(this, 4);
- this.view.setUint32(this.length, this.length);
- this.length += 4;
- this.position += 4;
-
- // trim down the byte buffer to what is actually being used
- this.bytes = this.bytes.subarray(0, this.length);
- this.frameTime = FlvTag.frameTime(this.bytes);
- // if bytes.bytelength isn't equal to this.length, handle error
- return this;
- };
- };
-
- FlvTag.AUDIO_TAG = 0x08; // == 8, :uint
- FlvTag.VIDEO_TAG = 0x09; // == 9, :uint
- FlvTag.METADATA_TAG = 0x12; // == 18, :uint
-
- // (tag:ByteArray):Boolean {
- FlvTag.isAudioFrame = function(tag) {
- return FlvTag.AUDIO_TAG === tag[0];
- };
-
- // (tag:ByteArray):Boolean {
- FlvTag.isVideoFrame = function(tag) {
- return FlvTag.VIDEO_TAG === tag[0];
- };
-
- // (tag:ByteArray):Boolean {
- FlvTag.isMetaData = function(tag) {
- return FlvTag.METADATA_TAG === tag[0];
- };
-
- // (tag:ByteArray):Boolean {
- FlvTag.isKeyFrame = function(tag) {
- if (FlvTag.isVideoFrame(tag)) {
- return tag[11] === 0x17;
- }
-
- if (FlvTag.isAudioFrame(tag)) {
- return true;
- }
-
- if (FlvTag.isMetaData(tag)) {
- return true;
- }
-
- return false;
- };
-
- // (tag:ByteArray):uint {
- FlvTag.frameTime = function(tag) {
- var pts = tag[ 4] << 16; // :uint
- pts |= tag[ 5] << 8;
- pts |= tag[ 6] << 0;
- pts |= tag[ 7] << 24;
- return pts;
- };
-
- module.exports = FlvTag;
-
- },{}],44:[function(require,module,exports){
- module.exports = {
- tag: require('./flv-tag'),
- Transmuxer: require('./transmuxer'),
- getFlvHeader: require('./flv-header')
- };
-
- },{"./flv-header":42,"./flv-tag":43,"./transmuxer":46}],45:[function(require,module,exports){
- 'use strict';
-
- var TagList = function() {
- var self = this;
-
- this.list = [];
-
- this.push = function(tag) {
- this.list.push({
- bytes: tag.bytes,
- dts: tag.dts,
- pts: tag.pts,
- keyFrame: tag.keyFrame,
- metaDataTag: tag.metaDataTag
- });
- };
-
- Object.defineProperty(this, 'length', {
- get: function() {
- return self.list.length;
- }
- });
- };
-
- module.exports = TagList;
-
- },{}],46:[function(require,module,exports){
- 'use strict';
-
- var Stream = require('../utils/stream.js');
- var FlvTag = require('./flv-tag.js');
- var m2ts = require('../m2ts/m2ts.js');
- var AdtsStream = require('../codecs/adts.js');
- var H264Stream = require('../codecs/h264').H264Stream;
- var CoalesceStream = require('./coalesce-stream.js');
- var TagList = require('./tag-list.js');
-
- var
- Transmuxer,
- VideoSegmentStream,
- AudioSegmentStream,
- collectTimelineInfo,
- metaDataTag,
- extraDataTag;
-
- /**
- * Store information about the start and end of the tracka and the
- * duration for each frame/sample we process in order to calculate
- * the baseMediaDecodeTime
- */
- collectTimelineInfo = function(track, data) {
- if (typeof data.pts === 'number') {
- if (track.timelineStartInfo.pts === undefined) {
- track.timelineStartInfo.pts = data.pts;
- } else {
- track.timelineStartInfo.pts =
- Math.min(track.timelineStartInfo.pts, data.pts);
- }
- }
-
- if (typeof data.dts === 'number') {
- if (track.timelineStartInfo.dts === undefined) {
- track.timelineStartInfo.dts = data.dts;
- } else {
- track.timelineStartInfo.dts =
- Math.min(track.timelineStartInfo.dts, data.dts);
- }
- }
- };
-
- metaDataTag = function(track, pts) {
- var
- tag = new FlvTag(FlvTag.METADATA_TAG); // :FlvTag
-
- tag.dts = pts;
- tag.pts = pts;
-
- tag.writeMetaDataDouble('videocodecid', 7);
- tag.writeMetaDataDouble('width', track.width);
- tag.writeMetaDataDouble('height', track.height);
-
- return tag;
- };
-
- extraDataTag = function(track, pts) {
- var
- i,
- tag = new FlvTag(FlvTag.VIDEO_TAG, true);
-
- tag.dts = pts;
- tag.pts = pts;
-
- tag.writeByte(0x01);// version
- tag.writeByte(track.profileIdc);// profile
- tag.writeByte(track.profileCompatibility);// compatibility
- tag.writeByte(track.levelIdc);// level
- tag.writeByte(0xFC | 0x03); // reserved (6 bits), NULA length size - 1 (2 bits)
- tag.writeByte(0xE0 | 0x01); // reserved (3 bits), num of SPS (5 bits)
- tag.writeShort(track.sps[0].length); // data of SPS
- tag.writeBytes(track.sps[0]); // SPS
-
- tag.writeByte(track.pps.length); // num of PPS (will there ever be more that 1 PPS?)
- for (i = 0; i < track.pps.length; ++i) {
- tag.writeShort(track.pps[i].length); // 2 bytes for length of PPS
- tag.writeBytes(track.pps[i]); // data of PPS
- }
-
- return tag;
- };
-
- /**
- * Constructs a single-track, media segment from AAC data
- * events. The output of this stream can be fed to flash.
- */
- AudioSegmentStream = function(track) {
- var
- adtsFrames = [],
- oldExtraData;
-
- AudioSegmentStream.prototype.init.call(this);
-
- this.push = function(data) {
- collectTimelineInfo(track, data);
-
- if (track && track.channelcount === undefined) {
- track.audioobjecttype = data.audioobjecttype;
- track.channelcount = data.channelcount;
- track.samplerate = data.samplerate;
- track.samplingfrequencyindex = data.samplingfrequencyindex;
- track.samplesize = data.samplesize;
- track.extraData = (track.audioobjecttype << 11) |
- (track.samplingfrequencyindex << 7) |
- (track.channelcount << 3);
- }
-
- data.pts = Math.round(data.pts / 90);
- data.dts = Math.round(data.dts / 90);
-
- // buffer audio data until end() is called
- adtsFrames.push(data);
- };
-
- this.flush = function() {
- var currentFrame, adtsFrame, lastMetaPts, tags = new TagList();
- // return early if no audio data has been observed
- if (adtsFrames.length === 0) {
- this.trigger('done', 'AudioSegmentStream');
- return;
- }
-
- lastMetaPts = -Infinity;
-
- while (adtsFrames.length) {
- currentFrame = adtsFrames.shift();
-
- // write out metadata tags every 1 second so that the decoder
- // is re-initialized quickly after seeking into a different
- // audio configuration
- if (track.extraData !== oldExtraData || currentFrame.pts - lastMetaPts >= 1000) {
- adtsFrame = new FlvTag(FlvTag.METADATA_TAG);
- adtsFrame.pts = currentFrame.pts;
- adtsFrame.dts = currentFrame.dts;
-
- // AAC is always 10
- adtsFrame.writeMetaDataDouble('audiocodecid', 10);
- adtsFrame.writeMetaDataBoolean('stereo', track.channelcount === 2);
- adtsFrame.writeMetaDataDouble('audiosamplerate', track.samplerate);
- // Is AAC always 16 bit?
- adtsFrame.writeMetaDataDouble('audiosamplesize', 16);
-
- tags.push(adtsFrame.finalize());
-
- oldExtraData = track.extraData;
-
- adtsFrame = new FlvTag(FlvTag.AUDIO_TAG, true);
- // For audio, DTS is always the same as PTS. We want to set the DTS
- // however so we can compare with video DTS to determine approximate
- // packet order
- adtsFrame.pts = currentFrame.pts;
- adtsFrame.dts = currentFrame.dts;
-
- adtsFrame.view.setUint16(adtsFrame.position, track.extraData);
- adtsFrame.position += 2;
- adtsFrame.length = Math.max(adtsFrame.length, adtsFrame.position);
-
- tags.push(adtsFrame.finalize());
-
- lastMetaPts = currentFrame.pts;
- }
- adtsFrame = new FlvTag(FlvTag.AUDIO_TAG);
- adtsFrame.pts = currentFrame.pts;
- adtsFrame.dts = currentFrame.dts;
-
- adtsFrame.writeBytes(currentFrame.data);
-
- tags.push(adtsFrame.finalize());
- }
-
- oldExtraData = null;
- this.trigger('data', {track: track, tags: tags.list});
-
- this.trigger('done', 'AudioSegmentStream');
- };
- };
- AudioSegmentStream.prototype = new Stream();
-
- /**
- * Store FlvTags for the h264 stream
- * @param track {object} track metadata configuration
- */
- VideoSegmentStream = function(track) {
- var
- nalUnits = [],
- config,
- h264Frame;
- VideoSegmentStream.prototype.init.call(this);
-
- this.finishFrame = function(tags, frame) {
- if (!frame) {
- return;
- }
- // Check if keyframe and the length of tags.
- // This makes sure we write metadata on the first frame of a segment.
- if (config && track && track.newMetadata &&
- (frame.keyFrame || tags.length === 0)) {
- // Push extra data on every IDR frame in case we did a stream change + seek
- var metaTag = metaDataTag(config, frame.dts).finalize();
- var extraTag = extraDataTag(track, frame.dts).finalize();
-
- metaTag.metaDataTag = extraTag.metaDataTag = true;
-
- tags.push(metaTag);
- tags.push(extraTag);
- track.newMetadata = false;
- }
-
- frame.endNalUnit();
- tags.push(frame.finalize());
- h264Frame = null;
- };
-
- this.push = function(data) {
- collectTimelineInfo(track, data);
-
- data.pts = Math.round(data.pts / 90);
- data.dts = Math.round(data.dts / 90);
-
- // buffer video until flush() is called
- nalUnits.push(data);
- };
-
- this.flush = function() {
- var
- currentNal,
- tags = new TagList();
-
- // 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.trigger('done', 'VideoSegmentStream');
- return;
- }
-
- while (nalUnits.length) {
- currentNal = nalUnits.shift();
-
- // record the track config
- if (currentNal.nalUnitType === 'seq_parameter_set_rbsp') {
- track.newMetadata = true;
- config = currentNal.config;
- track.width = config.width;
- track.height = config.height;
- track.sps = [currentNal.data];
- track.profileIdc = config.profileIdc;
- track.levelIdc = config.levelIdc;
- track.profileCompatibility = config.profileCompatibility;
- h264Frame.endNalUnit();
- } else if (currentNal.nalUnitType === 'pic_parameter_set_rbsp') {
- track.newMetadata = true;
- track.pps = [currentNal.data];
- h264Frame.endNalUnit();
- } else if (currentNal.nalUnitType === 'access_unit_delimiter_rbsp') {
- if (h264Frame) {
- this.finishFrame(tags, h264Frame);
- }
- h264Frame = new FlvTag(FlvTag.VIDEO_TAG);
- h264Frame.pts = currentNal.pts;
- h264Frame.dts = currentNal.dts;
- } else {
- if (currentNal.nalUnitType === 'slice_layer_without_partitioning_rbsp_idr') {
- // the current sample is a key frame
- h264Frame.keyFrame = true;
- }
- h264Frame.endNalUnit();
- }
- h264Frame.startNalUnit();
- h264Frame.writeBytes(currentNal.data);
- }
- if (h264Frame) {
- this.finishFrame(tags, h264Frame);
- }
-
- this.trigger('data', {track: track, tags: tags.list});
-
- // Continue with the flush process now
- this.trigger('done', 'VideoSegmentStream');
- };
- };
-
- VideoSegmentStream.prototype = new Stream();
-
- /**
- * An object that incrementally transmuxes MPEG2 Trasport Stream
- * chunks into an FLV.
- */
- Transmuxer = function(options) {
- var
- self = this,
-
- packetStream, parseStream, elementaryStream,
- videoTimestampRolloverStream, audioTimestampRolloverStream,
- timedMetadataTimestampRolloverStream,
- adtsStream, h264Stream,
- videoSegmentStream, audioSegmentStream, captionStream,
- coalesceStream;
-
- Transmuxer.prototype.init.call(this);
-
- options = options || {};
-
- // expose the metadata stream
- this.metadataStream = new m2ts.MetadataStream();
-
- options.metadataStream = this.metadataStream;
-
- // set up the parsing pipeline
- packetStream = new m2ts.TransportPacketStream();
- parseStream = new m2ts.TransportParseStream();
- elementaryStream = new m2ts.ElementaryStream();
- videoTimestampRolloverStream = new m2ts.TimestampRolloverStream('video');
- audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
- timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
-
- adtsStream = new AdtsStream();
- h264Stream = new H264Stream();
- coalesceStream = new CoalesceStream(options);
-
- // disassemble MPEG2-TS packets into elementary streams
- packetStream
- .pipe(parseStream)
- .pipe(elementaryStream);
-
- // !!THIS ORDER IS IMPORTANT!!
- // demux the streams
- elementaryStream
- .pipe(videoTimestampRolloverStream)
- .pipe(h264Stream);
- elementaryStream
- .pipe(audioTimestampRolloverStream)
- .pipe(adtsStream);
-
- elementaryStream
- .pipe(timedMetadataTimestampRolloverStream)
- .pipe(this.metadataStream)
- .pipe(coalesceStream);
- // if CEA-708 parsing is available, hook up a caption stream
- captionStream = new m2ts.CaptionStream();
- h264Stream.pipe(captionStream)
- .pipe(coalesceStream);
-
- // hook up the segment streams once track metadata is delivered
- elementaryStream.on('data', function(data) {
- var i, videoTrack, audioTrack;
-
- if (data.type === 'metadata') {
- i = data.tracks.length;
-
- // scan the tracks listed in the metadata
- while (i--) {
- if (data.tracks[i].type === 'video') {
- videoTrack = data.tracks[i];
- } else if (data.tracks[i].type === 'audio') {
- audioTrack = data.tracks[i];
- }
- }
-
- // hook up the video segment stream to the first track with h264 data
- if (videoTrack && !videoSegmentStream) {
- coalesceStream.numberOfTracks++;
- videoSegmentStream = new VideoSegmentStream(videoTrack);
-
- // Set up the final part of the video pipeline
- h264Stream
- .pipe(videoSegmentStream)
- .pipe(coalesceStream);
- }
-
- if (audioTrack && !audioSegmentStream) {
- // hook up the audio segment stream to the first track with aac data
- coalesceStream.numberOfTracks++;
- audioSegmentStream = new AudioSegmentStream(audioTrack);
-
- // Set up the final part of the audio pipeline
- adtsStream
- .pipe(audioSegmentStream)
- .pipe(coalesceStream);
- }
- }
- });
-
- // feed incoming data to the front of the parsing pipeline
- this.push = function(data) {
- packetStream.push(data);
- };
-
- // flush any buffered data
- this.flush = function() {
- // Start at the top of the pipeline and flush all pending work
- packetStream.flush();
- };
-
- // Re-emit any data coming from the coalesce stream to the outside world
- coalesceStream.on('data', function(event) {
- self.trigger('data', event);
- });
-
- // Let the consumer know we have finished flushing the entire pipeline
- coalesceStream.on('done', function() {
- self.trigger('done');
- });
- };
- Transmuxer.prototype = new Stream();
-
- // forward compatibility
- module.exports = Transmuxer;
-
- },{"../codecs/adts.js":38,"../codecs/h264":39,"../m2ts/m2ts.js":48,"../utils/stream.js":60,"./coalesce-stream.js":41,"./flv-tag.js":43,"./tag-list.js":45}],47:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * 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
- */
-
- 'use strict';
-
- // -----------------
- // Link To Transport
- // -----------------
-
- // Supplemental enhancement information (SEI) NAL units have a
- // 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,
- Stream = require('../utils/stream');
-
- /**
- * 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) {
- result.payloadType = payloadType;
- result.payloadSize = payloadSize;
- result.payload = bytes.subarray(i, i + payloadSize);
- break;
- }
-
- // 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 CaptionStream = function() {
- CaptionStream.prototype.init.call(this);
-
- this.captionPackets_ = [];
-
- this.field1_ = new Cea608Stream(); // eslint-disable-line no-use-before-define
-
- // forward data and done events from field1_ to this CaptionStream
- this.field1_.on('data', this.trigger.bind(this, 'data'));
- this.field1_.on('done', this.trigger.bind(this, 'done'));
- };
- CaptionStream.prototype = new Stream();
- CaptionStream.prototype.push = function(event) {
- var sei, userData;
-
- // only examine SEI NALs
- if (event.nalUnitType !== 'sei_rbsp') {
- return;
- }
-
- // parse the sei
- sei = parseSei(event.escapedRBSP);
-
- // ignore everything but user_data_registered_itu_t_t35
- if (sei.payloadType !== USER_DATA_REGISTERED_ITU_T_T35) {
- return;
- }
-
- // parse out the user data payload
- userData = parseUserData(sei);
-
- // ignore unrecognized userData
- if (!userData) {
- return;
- }
-
- // parse out CC data packets and save them for later
- this.captionPackets_ = this.captionPackets_.concat(parseCaptionPackets(event.pts, userData));
- };
-
- CaptionStream.prototype.flush = function() {
- // make sure we actually parsed captions before proceeding
- if (!this.captionPackets_.length) {
- this.field1_.flush();
- 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;
- });
-
- // Push each caption into Cea608Stream
- this.captionPackets_.forEach(this.field1_.push, this.field1_);
-
- this.captionPackets_.length = 0;
- this.field1_.flush();
- return;
- };
- // ----------------------
- // Session to Application
- // ----------------------
-
- var BASIC_CHARACTER_TRANSLATION = {
- 0x2a: 0xe1,
- 0x5c: 0xe9,
- 0x5e: 0xed,
- 0x5f: 0xf3,
- 0x60: 0xfa,
- 0x7b: 0xe7,
- 0x7c: 0xf7,
- 0x7d: 0xd1,
- 0x7e: 0xf1,
- 0x7f: 0x2588
- };
-
- var getCharFromCode = function(code) {
- if (code === null) {
- return '';
- }
- code = BASIC_CHARACTER_TRANSLATION[code] || code;
- return String.fromCharCode(code);
- };
-
- // Constants for the byte 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
- var PADDING = 0x0000,
-
- // Pop-on Mode
- RESUME_CAPTION_LOADING = 0x1420,
- END_OF_CAPTION = 0x142f,
-
- // Roll-up Mode
- ROLL_UP_2_ROWS = 0x1425,
- ROLL_UP_3_ROWS = 0x1426,
- ROLL_UP_4_ROWS = 0x1427,
- CARRIAGE_RETURN = 0x142d,
- // Erasure
- BACKSPACE = 0x1421,
- ERASE_DISPLAYED_MEMORY = 0x142c,
- ERASE_NON_DISPLAYED_MEMORY = 0x142e;
-
- // the index of the last row in a CEA-608 display buffer
- var BOTTOM_ROW = 14;
- // CEA-608 captions are rendered onto a 34x15 matrix of character
- // cells. The "bottom" row is the last element in the outer array.
- var createDisplayBuffer = function() {
- var result = [], i = BOTTOM_ROW + 1;
- while (i--) {
- result.push('');
- }
- return result;
- };
-
- var Cea608Stream = function() {
- Cea608Stream.prototype.init.call(this);
-
- 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;
-
- this.push = function(packet) {
- // Ignore other channels
- if (packet.type !== 0) {
- return;
- }
- var data, swap, char0, char1;
- // remove the parity bits
- data = packet.ccData & 0x7f7f;
-
- // ignore duplicate control codes
- if (data === this.lastControlCode_) {
- this.lastControlCode_ = null;
- return;
- }
-
- // Store control codes
- if ((data & 0xf000) === 0x1000) {
- this.lastControlCode_ = data;
- } else {
- this.lastControlCode_ = null;
- }
-
- switch (data) {
- case PADDING:
- break;
- case RESUME_CAPTION_LOADING:
- this.mode_ = 'popOn';
- break;
- case END_OF_CAPTION:
- // 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;
- break;
-
- case ROLL_UP_2_ROWS:
- this.topRow_ = BOTTOM_ROW - 1;
- this.mode_ = 'rollUp';
- break;
- case ROLL_UP_3_ROWS:
- this.topRow_ = BOTTOM_ROW - 2;
- this.mode_ = 'rollUp';
- break;
- case ROLL_UP_4_ROWS:
- this.topRow_ = BOTTOM_ROW - 3;
- this.mode_ = 'rollUp';
- break;
- case CARRIAGE_RETURN:
- this.flushDisplayed(packet.pts);
- this.shiftRowsUp_();
- this.startPts_ = packet.pts;
- break;
-
- case BACKSPACE:
- if (this.mode_ === 'popOn') {
- this.nonDisplayed_[BOTTOM_ROW] = this.nonDisplayed_[BOTTOM_ROW].slice(0, -1);
- } else {
- this.displayed_[BOTTOM_ROW] = this.displayed_[BOTTOM_ROW].slice(0, -1);
- }
- break;
- case ERASE_DISPLAYED_MEMORY:
- this.flushDisplayed(packet.pts);
- this.displayed_ = createDisplayBuffer();
- break;
- case ERASE_NON_DISPLAYED_MEMORY:
- this.nonDisplayed_ = createDisplayBuffer();
- break;
- default:
- char0 = data >>> 8;
- char1 = data & 0xff;
-
- // Look for a Channel 1 Preamble Address Code
- if (char0 >= 0x10 && char0 <= 0x17 &&
- char1 >= 0x40 && char1 <= 0x7F &&
- (char0 !== 0x10 || char1 < 0x60)) {
- // Follow Safari's lead and replace the PAC with a space
- char0 = 0x20;
- // we only want one space so make the second character null
- // which will get become '' in getCharFromCode
- char1 = null;
- }
-
- // Look for special character sets
- if ((char0 === 0x11 || char0 === 0x19) &&
- (char1 >= 0x30 && char1 <= 0x3F)) {
- // Put in eigth note and space
- char0 = 0x266A;
- char1 = '';
- }
-
- // ignore unsupported control codes
- if ((char0 & 0xf0) === 0x10) {
- return;
- }
-
- // remove null chars
- if (char0 === 0x00) {
- char0 = null;
- }
- if (char1 === 0x00) {
- char1 = null;
- }
-
- // character handling is dependent on the current mode
- this[this.mode_](packet.pts, char0, char1);
- break;
- }
- };
- };
- Cea608Stream.prototype = new Stream();
- // Trigger a cue point that captures the current state of the
- // display buffer
- Cea608Stream.prototype.flushDisplayed = function(pts) {
- var content = this.displayed_
- // remove spaces from the start and end of the string
- .map(function(row) {
- return row.trim();
- })
- // remove empty rows
- .filter(function(row) {
- return row.length;
- })
- // combine all text rows to display in one cue
- .join('\n');
-
- if (content.length) {
- this.trigger('data', {
- startPts: this.startPts_,
- endPts: pts,
- text: content
- });
- }
- };
-
- // Mode Implementations
- Cea608Stream.prototype.popOn = function(pts, char0, char1) {
- var baseRow = this.nonDisplayed_[BOTTOM_ROW];
-
- // buffer characters
- baseRow += getCharFromCode(char0);
- baseRow += getCharFromCode(char1);
- this.nonDisplayed_[BOTTOM_ROW] = baseRow;
- };
-
- Cea608Stream.prototype.rollUp = function(pts, char0, char1) {
- var baseRow = this.displayed_[BOTTOM_ROW];
- if (baseRow === '') {
- // we're starting to buffer new display input, so flush out the
- // current display
- this.flushDisplayed(pts);
-
- this.startPts_ = pts;
- }
-
- baseRow += getCharFromCode(char0);
- baseRow += getCharFromCode(char1);
-
- this.displayed_[BOTTOM_ROW] = baseRow;
- };
- Cea608Stream.prototype.shiftRowsUp_ = function() {
- var i;
- // clear out inactive rows
- for (i = 0; i < this.topRow_; i++) {
- this.displayed_[i] = '';
- }
- // shift displayed rows up
- for (i = this.topRow_; i < BOTTOM_ROW; i++) {
- this.displayed_[i] = this.displayed_[i + 1];
- }
- // clear out the bottom row
- this.displayed_[BOTTOM_ROW] = '';
- };
-
- // exports
- module.exports = {
- CaptionStream: CaptionStream,
- Cea608Stream: Cea608Stream
- };
-
- },{"../utils/stream":60}],48:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * 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.
- */
- 'use strict';
- var Stream = require('../utils/stream.js'),
- CaptionStream = require('./caption-stream'),
- StreamTypes = require('./stream-types'),
- TimestampRolloverStream = require('./timestamp-rollover-stream').TimestampRolloverStream;
-
- var m2tsStreamTypes = require('./stream-types.js');
-
- // object types
- var TransportPacketStream, TransportParseStream, ElementaryStream;
-
- // constants
- var
- MP2T_PACKET_LENGTH = 188, // bytes
- SYNC_BYTE = 0x47;
-
- /**
- * Splits an incoming stream of binary data into MPEG-2 Transport
- * Stream packets.
- */
- TransportPacketStream = function() {
- var
- buffer = new Uint8Array(MP2T_PACKET_LENGTH),
- bytesInBuffer = 0;
-
- TransportPacketStream.prototype.init.call(this);
-
- // Deliver new bytes to the stream.
-
- this.push = function(bytes) {
- var
- startIndex = 0,
- endIndex = MP2T_PACKET_LENGTH,
- 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 && everything[endIndex] === SYNC_BYTE) {
- // 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;
- 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++;
- }
-
- // 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;
- }
- };
-
- 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 && buffer[0] === SYNC_BYTE) {
- this.trigger('data', buffer);
- bytesInBuffer = 0;
- }
- this.trigger('done');
- };
- };
- TransportPacketStream.prototype = new Stream();
-
- /**
- * 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 = {};
-
- // 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) {
- // add an entry that maps the elementary_pid to the stream_type
- self.programMapTable[(payload[offset + 1] & 0x1F) << 8 | payload[offset + 2]] = payload[offset];
-
- // 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;
-
- // if there are any packets waiting for a PMT to be found, process them now
- while (self.packetsWaitingForPmt.length) {
- self.processPes_.apply(self, self.packetsWaitingForPmt.shift());
- }
- };
-
- /**
- * Deliver a new MP2T packet to the stream.
- */
- 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);
- } 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) {
- result.streamType = this.programMapTable[result.pid];
- result.type = 'pes';
- result.data = packet.subarray(offset);
-
- this.trigger('data', result);
- };
-
- };
- TransportParseStream.prototype = new Stream();
- 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,
- // PES packet fragments
- video = {
- data: [],
- size: 0
- },
- audio = {
- data: [],
- size: 0
- },
- timedMetadata = {
- data: [],
- size: 0
- },
- parsePes = function(payload, pes) {
- var ptsDtsFlags;
-
- // 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]);
- },
- flushStream = function(stream, type) {
- var
- packetData = new Uint8Array(stream.size),
- event = {
- type: type
- },
- i = 0,
- fragment;
-
- // do nothing if there is no buffered data
- if (!stream.data.length) {
- return;
- }
- event.trackId = stream.data[0].pid;
-
- // reassemble the packet
- while (stream.data.length) {
- fragment = stream.data.shift();
-
- packetData.set(fragment.data, i);
- i += fragment.data.byteLength;
- }
-
- // parse assembled packet's PES header
- parsePes(packetData, event);
-
- stream.size = 0;
-
- self.trigger('data', event);
- };
-
- ElementaryStream.prototype.init.call(this);
-
- 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.H264_STREAM_TYPE:
- case m2tsStreamTypes.H264_STREAM_TYPE:
- stream = video;
- streamType = 'video';
- break;
- case StreamTypes.ADTS_STREAM_TYPE:
- stream = audio;
- streamType = 'audio';
- break;
- case StreamTypes.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);
- }
-
- // 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,
- k,
- track;
-
- // translate streams to tracks
- for (k in programMapTable) {
- if (programMapTable.hasOwnProperty(k)) {
- track = {
- timelineStartInfo: {
- baseMediaDecodeTime: 0
- }
- };
- track.id = +k;
- if (programMapTable[k] === m2tsStreamTypes.H264_STREAM_TYPE) {
- track.codec = 'avc';
- track.type = 'video';
- } else if (programMapTable[k] === m2tsStreamTypes.ADTS_STREAM_TYPE) {
- track.codec = 'adts';
- track.type = 'audio';
- }
- event.tracks.push(track);
- }
- }
- self.trigger('data', event);
- }
- })[data.type]();
- };
-
- /**
- * 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.flush = function() {
- // !!THIS ORDER IS IMPORTANT!!
- // video first then audio
- flushStream(video, 'video');
- flushStream(audio, 'audio');
- flushStream(timedMetadata, 'timed-metadata');
- this.trigger('done');
- };
- };
- ElementaryStream.prototype = new Stream();
-
- var m2ts = {
- PAT_PID: 0x0000,
- MP2T_PACKET_LENGTH: MP2T_PACKET_LENGTH,
- TransportPacketStream: TransportPacketStream,
- TransportParseStream: TransportParseStream,
- ElementaryStream: ElementaryStream,
- TimestampRolloverStream: TimestampRolloverStream,
- CaptionStream: CaptionStream.CaptionStream,
- Cea608Stream: CaptionStream.Cea608Stream,
- MetadataStream: require('./metadata-stream')
- };
-
- for (var type in StreamTypes) {
- if (StreamTypes.hasOwnProperty(type)) {
- m2ts[type] = StreamTypes[type];
- }
- }
-
- module.exports = m2ts;
-
- },{"../utils/stream.js":60,"./caption-stream":47,"./metadata-stream":49,"./stream-types":51,"./stream-types.js":51,"./timestamp-rollover-stream":52}],49:[function(require,module,exports){
- /**
- * Accepts program elementary stream (PES) data events and parses out
- * ID3 metadata from them, if present.
- * @see http://id3.org/id3v2.3.0
- */
- 'use strict';
- var
- Stream = require('../utils/stream'),
- StreamTypes = require('./stream-types'),
- // return a percent-encoded representation of the specified byte range
- // @see http://en.wikipedia.org/wiki/Percent-encoding
- 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 UTf-8.
- parseUtf8 = function(bytes, start, end) {
- return decodeURIComponent(percentEncode(bytes, start, end));
- },
- // return the string representation of the specified byte range,
- // interpreted as ISO-8859-1.
- parseIso88591 = function(bytes, start, end) {
- return unescape(percentEncode(bytes, start, end)); // jshint ignore:line
- },
- parseSyncSafeInteger = function(data) {
- return (data[0] << 21) |
- (data[1] << 14) |
- (data[2] << 7) |
- (data[3]);
- },
- tagParsers = {
- TXXX: function(tag) {
- var i;
- if (tag.data[0] !== 3) {
- // ignore frames with unrecognized character encodings
- return;
- }
-
- for (i = 1; i < tag.data.length; i++) {
- if (tag.data[i] === 0) {
- // parse the text fields
- tag.description = parseUtf8(tag.data, 1, i);
- // do not include the null terminator in the tag value
- tag.value = parseUtf8(tag.data, i + 1, tag.data.length).replace(/\0*$/, '');
- break;
- }
- }
- tag.data = tag.value;
- },
- WXXX: function(tag) {
- var i;
- if (tag.data[0] !== 3) {
- // ignore frames with unrecognized character encodings
- return;
- }
-
- for (i = 1; i < tag.data.length; i++) {
- if (tag.data[i] === 0) {
- // parse the description and URL fields
- tag.description = parseUtf8(tag.data, 1, i);
- tag.url = parseUtf8(tag.data, i + 1, tag.data.length);
- break;
- }
- }
- },
- PRIV: function(tag) {
- var i;
-
- for (i = 0; i < tag.data.length; i++) {
- if (tag.data[i] === 0) {
- // parse the description and URL fields
- tag.owner = parseIso88591(tag.data, 0, i);
- break;
- }
- }
- tag.privateData = tag.data.subarray(i + 1);
- tag.data = tag.privateData;
- }
- },
- MetadataStream;
-
- MetadataStream = function(options) {
- var
- settings = {
- debug: !!(options && options.debug),
-
- // 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.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))) {
- if (settings.debug) {
- // eslint-disable-next-line no-console
- console.log('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 = 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 += parseSyncSafeInteger(tag.data.subarray(10, 14));
-
- // clip any padding off the end
- tagSize -= 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 = parseSyncSafeInteger(tag.data.subarray(frameStart + 4, frameStart + 8));
- if (frameSize < 1) {
- // eslint-disable-next-line no-console
- return console.log('Malformed ID3 frame encountered. Skipping metadata parsing.');
- }
- 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;
- if (tagParsers[frame.id]) {
- tagParsers[frame.id](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();
-
- module.exports = MetadataStream;
-
- },{"../utils/stream":60,"./stream-types":51}],50:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2016 Brightcove
- * All rights reserved.
- *
- * Utilities to detect basic properties and metadata about TS Segments.
- */
- 'use strict';
-
- var StreamTypes = require('./stream-types.js');
-
- 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.H264_STREAM_TYPE:
- return 'video';
- case StreamTypes.ADTS_STREAM_TYPE:
- return 'audio';
- case StreamTypes.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);
-
- var pes = {};
- 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) {
- // 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;
- };
-
-
- module.exports = {
- parseType: parseType,
- parsePat: parsePat,
- parsePmt: parsePmt,
- parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,
- parsePesType: parsePesType,
- parsePesTime: parsePesTime,
- videoPacketContainsKeyFrame: videoPacketContainsKeyFrame
- };
-
- },{"./stream-types.js":51}],51:[function(require,module,exports){
- 'use strict';
-
- module.exports = {
- H264_STREAM_TYPE: 0x1B,
- ADTS_STREAM_TYPE: 0x0F,
- METADATA_STREAM_TYPE: 0x15
- };
-
- },{}],52:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2016 Brightcove
- * All rights reserved.
- *
- * Accepts program elementary stream (PES) data events and corrects
- * decode and presentation time stamps to account for a rollover
- * of the 33 bit value.
- */
-
- 'use strict';
-
- var Stream = require('../utils/stream');
-
- var MAX_TS = 8589934592;
-
- var RO_THRESH = 4294967296;
-
- var handleRollover = 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 = function(type) {
- var lastDTS, referenceDTS;
-
- TimestampRolloverStream.prototype.init.call(this);
-
- this.type_ = type;
-
- this.push = function(data) {
- if (data.type !== this.type_) {
- return;
- }
-
- if (referenceDTS === undefined) {
- referenceDTS = data.dts;
- }
-
- data.dts = handleRollover(data.dts, referenceDTS);
- data.pts = handleRollover(data.pts, referenceDTS);
-
- lastDTS = data.dts;
-
- this.trigger('data', data);
- };
-
- this.flush = function() {
- referenceDTS = lastDTS;
- this.trigger('done');
- };
-
- this.discontinuity = function() {
- referenceDTS = void 0;
- lastDTS = void 0;
- };
-
- };
-
- TimestampRolloverStream.prototype = new Stream();
-
- module.exports = {
- TimestampRolloverStream: TimestampRolloverStream,
- handleRollover: handleRollover
- };
-
- },{"../utils/stream":60}],53:[function(require,module,exports){
- module.exports = {
- generator: require('./mp4-generator'),
- Transmuxer: require('./transmuxer').Transmuxer,
- AudioSegmentStream: require('./transmuxer').AudioSegmentStream,
- VideoSegmentStream: require('./transmuxer').VideoSegmentStream
- };
-
- },{"./mp4-generator":54,"./transmuxer":56}],54:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * Functions that generate fragmented MP4s suitable for use with Media
- * Source Extensions.
- */
- 'use strict';
-
- var UINT32_MAX = Math.pow(2, 32) - 1;
-
- var box, dinf, esds, ftyp, mdat, mfhd, minf, moof, moov, mvex, mvhd,
- trak, tkhd, mdia, mdhd, hdlr, sdtp, stbl, stsd, traf, trex,
- trun, 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: [],
- 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;
-
- // 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]));
- }
-
- return box(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
- ]).concat(sequenceParameterSets).concat([
- pps.length // numOfPictureParameterSets
- ]).concat(pictureParameterSets))), // "PPS"
- box(types.btrt, new Uint8Array([
- 0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB
- 0x00, 0x2d, 0xc6, 0xc0, // maxBitrate
- 0x00, 0x2d, 0xc6, 0xc0
- ])) // avgBitrate
- );
- };
-
- 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 / (UINT32_MAX + 1));
- lowerWordBaseMediaDecodeTime = Math.floor(track.baseMediaDecodeTime % (UINT32_MAX + 1));
-
- 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(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(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 bytes, samples, sample, i;
-
- samples = track.samples || [];
- offset += 8 + 12 + (16 * samples.length);
-
- bytes = trunHeader(samples, offset);
-
- for (i = 0; i < samples.length; i++) {
- sample = samples[i];
- bytes = bytes.concat([
- (sample.duration & 0xFF000000) >>> 24,
- (sample.duration & 0xFF0000) >>> 16,
- (sample.duration & 0xFF00) >>> 8,
- sample.duration & 0xFF, // sample_duration
- (sample.size & 0xFF000000) >>> 24,
- (sample.size & 0xFF0000) >>> 16,
- (sample.size & 0xFF00) >>> 8,
- sample.size & 0xFF, // sample_size
- (sample.flags.isLeading << 2) | sample.flags.dependsOn,
- (sample.flags.isDependedOn << 6) |
- (sample.flags.hasRedundancy << 4) |
- (sample.flags.paddingValue << 1) |
- sample.flags.isNonSyncSample,
- sample.flags.degradationPriority & 0xF0 << 8,
- sample.flags.degradationPriority & 0x0F, // sample_flags
- (sample.compositionTimeOffset & 0xFF000000) >>> 24,
- (sample.compositionTimeOffset & 0xFF0000) >>> 16,
- (sample.compositionTimeOffset & 0xFF00) >>> 8,
- sample.compositionTimeOffset & 0xFF // sample_composition_time_offset
- ]);
- }
- return box(types.trun, new Uint8Array(bytes));
- };
-
- audioTrun = function(track, offset) {
- var bytes, samples, sample, i;
-
- samples = track.samples || [];
- offset += 8 + 12 + (8 * samples.length);
-
- bytes = trunHeader(samples, offset);
-
- for (i = 0; i < samples.length; i++) {
- sample = samples[i];
- bytes = bytes.concat([
- (sample.duration & 0xFF000000) >>> 24,
- (sample.duration & 0xFF0000) >>> 16,
- (sample.duration & 0xFF00) >>> 8,
- sample.duration & 0xFF, // sample_duration
- (sample.size & 0xFF000000) >>> 24,
- (sample.size & 0xFF0000) >>> 16,
- (sample.size & 0xFF00) >>> 8,
- sample.size & 0xFF]); // sample_size
- }
-
- return box(types.trun, new Uint8Array(bytes));
- };
-
- trun = function(track, offset) {
- if (track.type === 'audio') {
- return audioTrun(track, offset);
- }
-
- return videoTrun(track, offset);
- };
- }());
-
- module.exports = {
- 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;
- }
- };
-
- },{}],55:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * Utilities to detect basic properties and metadata about MP4s.
- */
- 'use strict';
-
- var findBox, parseType, timescale, startTime;
-
- // Find the data for a box specified by its path
- findBox = 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 = data[i] << 24;
- size |= data[i + 1] << 16;
- size |= data[i + 2] << 8;
- size |= data[i + 3];
-
- type = parseType(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(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;
- };
-
- /**
- * Returns the string representation of an ASCII encoded four byte buffer.
- * @param buffer {Uint8Array} a four-byte buffer to translate
- * @return {string} the corresponding string
- */
- parseType = 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;
- };
-
- /**
- * 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 = 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] = 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, baseTimes, result;
-
- // we need info from two childrend of each track fragment box
- trafs = findBox(fragment, ['moof', 'traf']);
-
- // determine the start times for each track
- baseTimes = [].concat.apply([], trafs.map(function(traf) {
- return findBox(traf, ['tfhd']).map(function(tfhd) {
- var id, scale, baseTime;
-
- // get the track id from the tfhd
- id = tfhd[4] << 24 |
- tfhd[5] << 16 |
- tfhd[6] << 8 |
- tfhd[7];
- // assume a 90kHz clock if no timescale was specified
- scale = timescale[id] || 90e3;
-
- // get the base media decode time from the tfdt
- baseTime = findBox(traf, ['tfdt']).map(function(tfdt) {
- var version, result;
-
- version = tfdt[0];
- result = tfdt[4] << 24 |
- tfdt[5] << 16 |
- tfdt[6] << 8 |
- tfdt[7];
- if (version === 1) {
- result *= Math.pow(2, 32);
- result += tfdt[8] << 24 |
- tfdt[9] << 16 |
- tfdt[10] << 8 |
- tfdt[11];
- }
- return result;
- })[0];
- baseTime = baseTime || Infinity;
-
- // convert base time to seconds
- return baseTime / scale;
- });
- }));
-
- // return the minimum
- result = Math.min.apply(null, baseTimes);
- return isFinite(result) ? result : 0;
- };
-
- module.exports = {
- parseType: parseType,
- timescale: timescale,
- startTime: startTime
- };
-
- },{}],56:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * 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.
- */
- 'use strict';
-
- var Stream = require('../utils/stream.js');
- var mp4 = require('./mp4-generator.js');
- var m2ts = require('../m2ts/m2ts.js');
- var AdtsStream = require('../codecs/adts.js');
- var H264Stream = require('../codecs/h264').H264Stream;
- var AacStream = require('../aac');
- var coneOfSilence = require('../data/silence');
- var clock = require('../utils/clock');
-
- // constants
- var AUDIO_PROPERTIES = [
- 'audioobjecttype',
- 'channelcount',
- 'samplerate',
- 'samplingfrequencyindex',
- 'samplesize'
- ];
-
- var VIDEO_PROPERTIES = [
- 'width',
- 'height',
- 'profileIdc',
- 'levelIdc',
- 'profileCompatibility'
- ];
-
- var ONE_SECOND_IN_TS = 90000; // 90kHz clock
-
- // object types
- var VideoSegmentStream, AudioSegmentStream, Transmuxer, CoalesceStream;
-
- // Helper functions
- var
- createDefaultSample,
- isLikelyAacData,
- collectDtsInfo,
- clearDtsInfo,
- calculateTrackBaseMediaDecodeTime,
- arrayEquals,
- sumFrameByteLengths;
-
- /**
- * Default sample object
- * see ISO/IEC 14496-12:2012, section 8.6.4.3
- */
- createDefaultSample = function() {
- return {
- size: 0,
- flags: {
- isLeading: 0,
- dependsOn: 1,
- isDependedOn: 0,
- hasRedundancy: 0,
- degradationPriority: 0
- }
- };
- };
-
- isLikelyAacData = function(data) {
- if ((data[0] === 'I'.charCodeAt(0)) &&
- (data[1] === 'D'.charCodeAt(0)) &&
- (data[2] === '3'.charCodeAt(0))) {
- return true;
- }
- return false;
- };
-
- /**
- * Compare two arrays (even typed) for same-ness
- */
- 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;
- };
-
- /**
- * Sum the `byteLength` properties of the data in each AAC frame
- */
- 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;
- };
-
- /**
- * 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.
- */
- AudioSegmentStream = function(track) {
- var
- adtsFrames = [],
- sequenceNumber = 0,
- earliestAllowedDts = 0,
- audioAppendStartTs = 0,
- videoBaseMediaDecodeTime = Infinity;
-
- AudioSegmentStream.prototype.init.call(this);
-
- this.push = function(data) {
- 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 - track.timelineStartInfo.baseMediaDecodeTime;
- };
-
- this.setVideoBaseMediaDecodeTime = function(baseMediaDecodeTime) {
- videoBaseMediaDecodeTime = baseMediaDecodeTime;
- };
-
- this.setAudioAppendStart = function(timestamp) {
- audioAppendStartTs = timestamp;
- };
-
- this.flush = function() {
- var
- frames,
- moof,
- mdat,
- boxes;
-
- // return early if no audio data has been observed
- if (adtsFrames.length === 0) {
- this.trigger('done', 'AudioSegmentStream');
- return;
- }
-
- frames = this.trimAdtsFramesByEarliestDts_(adtsFrames);
- track.baseMediaDecodeTime = calculateTrackBaseMediaDecodeTime(track);
-
- this.prefixWithSilence_(track, frames);
-
- // we have to build the index from byte locations to
- // samples (that is, adts frames) in the audio data
- track.samples = this.generateSampleTable_(frames);
-
- // concatenate the audio data to constuct the mdat
- mdat = mp4.mdat(this.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);
-
- clearDtsInfo(track);
-
- this.trigger('data', {track: track, boxes: boxes});
- this.trigger('done', 'AudioSegmentStream');
- };
-
- // Possibly pad (prefix) the audio track with silence if appending this track
- // would lead to the introduction of a gap in the audio buffer
- this.prefixWithSilence_ = function(track, frames) {
- var
- baseMediaDecodeTimeTs,
- frameDuration = 0,
- audioGapDuration = 0,
- audioFillFrameCount = 0,
- audioFillDuration = 0,
- silentFrame,
- i;
-
- if (!frames.length) {
- return;
- }
-
- baseMediaDecodeTimeTs = clock.audioTsToVideoTs(track.baseMediaDecodeTime, track.samplerate);
- // determine frame clock duration based on sample rate, round up to avoid overfills
- frameDuration = Math.ceil(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 > 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++) {
- frames.splice(i, 0, {
- data: silentFrame
- });
- }
-
- track.baseMediaDecodeTime -=
- Math.floor(clock.videoTsToAudioTs(audioFillDuration, track.samplerate));
- };
-
- // 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
- this.trimAdtsFramesByEarliestDts_ = function(adtsFrames) {
- 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
- this.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
- this.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;
- };
- };
-
- 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
- */
- VideoSegmentStream = function(track) {
- var
- sequenceNumber = 0,
- nalUnits = [],
- config,
- pps;
-
- VideoSegmentStream.prototype.init.call(this);
-
- delete track.minPTS;
-
- this.gopCache_ = [];
-
- this.push = function(nalUnit) {
- 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);
- };
-
- this.flush = function() {
- var
- frames,
- gopForFusion,
- gops,
- moof,
- mdat,
- boxes;
-
- // 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 = this.groupNalsIntoFrames_(nalUnits);
- gops = this.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) {
- 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 keyrame-pulling
- gops = this.extendFirstKeyFrame_(gops);
- }
- }
- collectDtsInfo(track, gops);
-
- // First, we have to build the index from byte locations to
- // samples (that is, frames) in the video data
- track.samples = this.generateSampleTable_(gops);
-
- // Concatenate the video data and construct the mdat
- mdat = mp4.mdat(this.concatenateNalData_(gops));
-
- // 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 = [];
-
- track.baseMediaDecodeTime = calculateTrackBaseMediaDecodeTime(track);
-
- 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.resetStream_ = function() {
- 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;
- };
-
- this.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;
- };
-
- // Convert an array of nal units into an array of frames with each frame being
- // 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.
- this.groupNalsIntoFrames_ = function(nalUnits) {
- var
- i,
- currentNal,
- currentFrame = [],
- frames = [];
-
- 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;
- 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
- 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.
- this.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;
- };
-
- // generate the track's sample table from an array of gops
- this.generateSampleTable_ = 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 = createDefaultSample();
-
- sample.dataOffset = dataOffset;
- sample.compositionTimeOffset = currentFrame.pts - currentFrame.dts;
- sample.duration = currentFrame.duration;
- sample.size = 4 * currentFrame.length; // Space for nal unit size
- sample.size += currentFrame.byteLength;
-
- if (currentFrame.keyFrame) {
- sample.flags.dependsOn = 2;
- }
-
- dataOffset += sample.size;
-
- samples.push(sample);
- }
- }
- return samples;
- };
-
- // generate the track's raw mdat data from an array of gops
- this.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;
- };
- };
-
- VideoSegmentStream.prototype = new Stream();
-
- /**
- * 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
- */
- 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
- */
- 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
- */
- calculateTrackBaseMediaDecodeTime = function(track) {
- var
- baseMediaDecodeTime,
- scale,
- // Calculate the distance, in time, that this segment starts from the start
- // of the timeline (earliest time seen since the transmuxer initialized)
- timeSinceStartOfTimeline = track.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 += timeSinceStartOfTimeline;
-
- // 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;
- baseMediaDecodeTime *= scale;
- baseMediaDecodeTime = Math.floor(baseMediaDecodeTime);
- }
-
- return baseMediaDecodeTime;
- };
-
- /**
- * 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.
- */
- 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;
-
- if (typeof options.remux !== 'undefined') {
- this.remuxTracks = !!options.remux;
- } else {
- this.remuxTracks = true;
- }
-
- 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.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.pendingBoxes.push(output.boxes);
- this.pendingBytes += output.boxes.byteLength;
-
- if (output.track.type === 'video') {
- this.videoTrack = output.track;
- }
- if (output.track.type === 'audio') {
- this.audioTrack = output.track;
- }
- };
- };
-
- CoalesceStream.prototype = new Stream();
- CoalesceStream.prototype.flush = function(flushSource) {
- var
- offset = 0,
- event = {
- captions: [],
- 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.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 into the
- // video timeline for the segment
- for (i = 0; i < this.pendingCaptions.length; i++) {
- caption = this.pendingCaptions[i];
- caption.startTime = (caption.startPts - timelineStartPts);
- caption.startTime /= 90e3;
- caption.endTime = (caption.endPts - timelineStartPts);
- caption.endTime /= 90e3;
- event.captions.push(caption);
- }
-
- // Translate ID3 frame PTS times into second offsets into the
- // video timeline for the segment
- for (i = 0; i < this.pendingMetadata.length; i++) {
- id3 = this.pendingMetadata[i];
- id3.cueTime = (id3.pts - timelineStartPts);
- id3.cueTime /= 90e3;
- 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
- this.trigger('data', event);
-
- // Only emit `done` if all tracks have been flushed and emitted
- if (this.emittedTracks >= this.numberOfTracks) {
- this.trigger('done');
- this.emittedTracks = 0;
- }
- };
- /**
- * 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' && !pipeline.audioSegmentStream) {
- 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);
- // Set up the final part of the audio pipeline
- pipeline.adtsStream
- .pipe(pipeline.audioSegmentStream)
- .pipe(pipeline.coalesceStream);
- }
- });
-
- // 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'));
- };
-
- 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.videoTimestampRolloverStream = new m2ts.TimestampRolloverStream('video');
- pipeline.audioTimestampRolloverStream = new m2ts.TimestampRolloverStream('audio');
- pipeline.timedMetadataTimestampRolloverStream = new m2ts.TimestampRolloverStream('timed-metadata');
- pipeline.adtsStream = new AdtsStream();
- pipeline.h264Stream = new H264Stream();
- pipeline.captionStream = new m2ts.CaptionStream();
- 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);
-
- // !!THIS ORDER IS IMPORTANT!!
- // demux the streams
- pipeline.elementaryStream
- .pipe(pipeline.videoTimestampRolloverStream)
- .pipe(pipeline.h264Stream);
- pipeline.elementaryStream
- .pipe(pipeline.audioTimestampRolloverStream)
- .pipe(pipeline.adtsStream);
-
- pipeline.elementaryStream
- .pipe(pipeline.timedMetadataTimestampRolloverStream)
- .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);
-
- 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.
- if (audioTrack) {
- 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);
- }
- });
-
- pipeline.videoSegmentStream.on('baseMediaDecodeTime', function(baseMediaDecodeTime) {
- if (audioTrack) {
- pipeline.audioSegmentStream.setVideoBaseMediaDecodeTime(baseMediaDecodeTime);
- }
- });
-
- // 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);
-
- // Set up the final part of the audio pipeline
- pipeline.adtsStream
- .pipe(pipeline.audioSegmentStream)
- .pipe(pipeline.coalesceStream);
- }
- }
- });
-
- // 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'));
- };
-
- // hook up the segment streams once track metadata is delivered
- this.setBaseMediaDecodeTime = function(baseMediaDecodeTime) {
- var pipeline = this.transmuxPipeline_;
-
- this.baseMediaDecodeTime = baseMediaDecodeTime;
- if (audioTrack) {
- audioTrack.timelineStartInfo.dts = undefined;
- audioTrack.timelineStartInfo.pts = undefined;
- clearDtsInfo(audioTrack);
- audioTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;
- if (pipeline.audioTimestampRolloverStream) {
- pipeline.audioTimestampRolloverStream.discontinuity();
- }
- }
- if (videoTrack) {
- if (pipeline.videoSegmentStream) {
- pipeline.videoSegmentStream.gopCache_ = [];
- pipeline.videoTimestampRolloverStream.discontinuity();
- }
- videoTrack.timelineStartInfo.dts = undefined;
- videoTrack.timelineStartInfo.pts = undefined;
- clearDtsInfo(videoTrack);
- videoTrack.timelineStartInfo.baseMediaDecodeTime = baseMediaDecodeTime;
- }
-
- if (pipeline.timedMetadataTimestampRolloverStream) {
- pipeline.timedMetadataTimestampRolloverStream.discontinuity();
- }
- };
-
- this.setAudioAppendStart = function(timestamp) {
- if (audioTrack) {
- this.transmuxPipeline_.audioSegmentStream.setAudioAppendStart(timestamp);
- }
- };
-
- // 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();
- };
- };
- Transmuxer.prototype = new Stream();
-
- module.exports = {
- Transmuxer: Transmuxer,
- VideoSegmentStream: VideoSegmentStream,
- AudioSegmentStream: AudioSegmentStream,
- AUDIO_PROPERTIES: AUDIO_PROPERTIES,
- VIDEO_PROPERTIES: VIDEO_PROPERTIES
- };
-
- },{"../aac":36,"../codecs/adts.js":38,"../codecs/h264":39,"../data/silence":40,"../m2ts/m2ts.js":48,"../utils/clock":58,"../utils/stream.js":60,"./mp4-generator.js":54}],57:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2016 Brightcove
- * All rights reserved.
- *
- * Parse mpeg2 transport stream packets to extract basic timing information
- */
- 'use strict';
-
- var StreamTypes = require('../m2ts/stream-types.js');
- var handleRollover = require('../m2ts/timestamp-rollover-stream.js').handleRollover;
- var probe = {};
- probe.ts = require('../m2ts/probe.js');
- probe.aac = require('../aac/probe.js');
-
-
- var
- PES_TIMESCALE = 90000,
- MP2T_PACKET_LENGTH = 188, // bytes
- SYNC_BYTE = 0x47;
-
- var isLikelyAacData = function(data) {
- if ((data[0] === 'I'.charCodeAt(0)) &&
- (data[1] === 'D'.charCodeAt(0)) &&
- (data[2] === '3'.charCodeAt(0))) {
- return true;
- }
- return false;
- };
-
- /**
- * 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':
- if (!pmt.pid) {
- pmt.pid = probe.ts.parsePat(packet);
- }
- break;
- case 'pmt':
- if (!pmt.table) {
- pmt.table = probe.ts.parsePmt(packet);
- }
- break;
- default:
- break;
- }
-
- // Found the pat and pmt, we can stop walking the segment
- if (pmt.pid && pmt.table) {
- return;
- }
-
- 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) {
- // 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);
- parsed.type = 'audio';
- result.audio.push(parsed);
- endLoop = true;
- }
- break;
- default:
- 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) {
- // 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);
- parsed.type = 'audio';
- result.audio.push(parsed);
- endLoop = true;
- }
- break;
- default:
- 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);
- 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)) {
- result.firstKeyFrame = probe.ts.parsePesTime(frame);
- result.firstKeyFrame.type = 'video';
- }
- currentFrame.size = 0;
- }
- }
- currentFrame.data.push(packet);
- currentFrame.size += packet.byteLength;
- }
- }
- break;
- default:
- 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);
- parsed.type = 'video';
- result.video.push(parsed);
- endLoop = true;
- }
- break;
- default:
- 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') {
- 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 / PES_TIMESCALE;
- info.ptsTime = info.pts / PES_TIMESCALE;
- });
- }
-
- if (segmentInfo.video && segmentInfo.video.length) {
- var videoBaseTimestamp = baseTimestamp;
- if (typeof videoBaseTimestamp === 'undefined') {
- 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 / PES_TIMESCALE;
- info.ptsTime = info.pts / PES_TIMESCALE;
- });
- 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 / PES_TIMESCALE;
- frame.ptsTime = frame.dts / PES_TIMESCALE;
- }
- }
- };
-
- /**
- * 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 = PES_TIMESCALE / 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;
- default:
- 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 = 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;
- };
-
- module.exports = {
- inspect: inspect
- };
-
- },{"../aac/probe.js":37,"../m2ts/probe.js":50,"../m2ts/stream-types.js":51,"../m2ts/timestamp-rollover-stream.js":52}],58:[function(require,module,exports){
- var
- ONE_SECOND_IN_TS = 90000, // 90kHz clock
- secondsToVideoTs,
- secondsToAudioTs,
- videoTsToSeconds,
- audioTsToSeconds,
- audioTsToVideoTs,
- videoTsToAudioTs;
-
- secondsToVideoTs = function(seconds) {
- return seconds * ONE_SECOND_IN_TS;
- };
-
- secondsToAudioTs = function(seconds, sampleRate) {
- return seconds * sampleRate;
- };
-
- videoTsToSeconds = function(timestamp) {
- return timestamp / ONE_SECOND_IN_TS;
- };
-
- audioTsToSeconds = function(timestamp, sampleRate) {
- return timestamp / sampleRate;
- };
-
- audioTsToVideoTs = function(timestamp, sampleRate) {
- return secondsToVideoTs(audioTsToSeconds(timestamp, sampleRate));
- };
-
- videoTsToAudioTs = function(timestamp, sampleRate) {
- return secondsToAudioTs(videoTsToSeconds(timestamp), sampleRate);
- };
-
- module.exports = {
- secondsToVideoTs: secondsToVideoTs,
- secondsToAudioTs: secondsToAudioTs,
- videoTsToSeconds: videoTsToSeconds,
- audioTsToSeconds: audioTsToSeconds,
- audioTsToVideoTs: audioTsToVideoTs,
- videoTsToAudioTs: videoTsToAudioTs
- };
-
- },{}],59:[function(require,module,exports){
- 'use strict';
-
- var ExpGolomb;
-
- /**
- * Parser for exponential Golomb codes, a variable-bitwidth number encoding
- * scheme used by h264.
- */
- ExpGolomb = 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();
- };
-
- module.exports = ExpGolomb;
-
- },{}],60:[function(require,module,exports){
- /**
- * mux.js
- *
- * Copyright (c) 2014 Brightcove
- * All rights reserved.
- *
- * A lightweight readable stream implemention that handles event dispatching.
- * Objects that inherit from streams should call init in their constructors.
- */
- 'use strict';
-
- var Stream = 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.prototype.pipe = function(destination) {
- this.on('data', function(data) {
- destination.push(data);
- });
-
- this.on('done', function(flushSource) {
- destination.flush(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.prototype.push = function(data) {
- this.trigger('data', data);
- };
-
- Stream.prototype.flush = function(flushSource) {
- this.trigger('done', flushSource);
- };
-
- module.exports = Stream;
-
- },{}],61:[function(require,module,exports){
- /* jshint ignore:start */
- (function(root) {
- /* jshint ignore:end */
- var URLToolkit = {
- // build an absolute URL from a relative one using the provided baseURL
- // if relativeURL is an absolute URL it will be returned as is.
- buildAbsoluteURL: function(baseURL, relativeURL) {
- // remove any remaining space and CRLF
- relativeURL = relativeURL.trim();
- if (/^[a-z]+:/i.test(relativeURL)) {
- // complete url, not relative
- return relativeURL;
- }
-
- var relativeURLQuery = null;
- var relativeURLHash = null;
-
- var relativeURLHashSplit = /^([^#]*)(.*)$/.exec(relativeURL);
- if (relativeURLHashSplit) {
- relativeURLHash = relativeURLHashSplit[2];
- relativeURL = relativeURLHashSplit[1];
- }
- var relativeURLQuerySplit = /^([^\?]*)(.*)$/.exec(relativeURL);
- if (relativeURLQuerySplit) {
- relativeURLQuery = relativeURLQuerySplit[2];
- relativeURL = relativeURLQuerySplit[1];
- }
-
- var baseURLHashSplit = /^([^#]*)(.*)$/.exec(baseURL);
- if (baseURLHashSplit) {
- baseURL = baseURLHashSplit[1];
- }
- var baseURLQuerySplit = /^([^\?]*)(.*)$/.exec(baseURL);
- if (baseURLQuerySplit) {
- baseURL = baseURLQuerySplit[1];
- }
-
- var baseURLDomainSplit = /^(([a-z]+:)?\/\/[^:\/]+(:[0-9]+)?)?(\/?.*)$/i.exec(baseURL);
- if (!baseURLDomainSplit) {
- throw new Error('Error trying to parse base URL.');
- }
-
- // e.g. 'http:', 'https:', ''
- var baseURLProtocol = baseURLDomainSplit[2] || '';
- // e.g. 'http://example.com', '//example.com', ''
- var baseURLProtocolDomain = baseURLDomainSplit[1] || '';
- // e.g. '/a/b/c/playlist.m3u8', 'a/b/c/playlist.m3u8'
- var baseURLPath = baseURLDomainSplit[4];
- if (baseURLPath.indexOf('/') !== 0 && baseURLProtocolDomain !== '') {
- // this handles a base url of http://example.com (missing last slash)
- baseURLPath = '/'+baseURLPath;
- }
-
- var builtURL = null;
- if (/^\/\//.test(relativeURL)) {
- // relative url starts wth '//' so copy protocol (which may be '' if baseUrl didn't provide one)
- builtURL = baseURLProtocol+'//'+URLToolkit.buildAbsolutePath('', relativeURL.substring(2));
- }
- else if (/^\//.test(relativeURL)) {
- // relative url starts with '/' so start from root of domain
- builtURL = baseURLProtocolDomain+'/'+URLToolkit.buildAbsolutePath('', relativeURL.substring(1));
- }
- else {
- builtURL = URLToolkit.buildAbsolutePath(baseURLProtocolDomain+baseURLPath, relativeURL);
- }
-
- // put the query and hash parts back
- if (relativeURLQuery) {
- builtURL += relativeURLQuery;
- }
- if (relativeURLHash) {
- builtURL += relativeURLHash;
- }
- return builtURL;
- },
-
- // build an absolute path using the provided basePath
- // adapted from https://developer.mozilla.org/en-US/docs/Web/API/document/cookie#Using_relative_URLs_in_the_path_parameter
- // this does not handle the case where relativePath is "/" or "//". These cases should be handled outside this.
- buildAbsolutePath: function(basePath, relativePath) {
- var sRelPath = relativePath;
- var nUpLn, sDir = '', sPath = basePath.replace(/[^\/]*$/, sRelPath.replace(/(\/|^)(?:\.?\/+)+/g, '$1'));
- for (var nEnd, nStart = 0; nEnd = sPath.indexOf('/../', nStart), nEnd > -1; nStart = nEnd + nUpLn) {
- nUpLn = /^\/(?:\.\.\/)*/.exec(sPath.slice(nEnd))[0].length;
- sDir = (sDir + sPath.substring(nStart, nEnd)).replace(new RegExp('(?:\\\/+[^\\\/]*){0,' + ((nUpLn - 1) / 3) + '}$'), '/');
- }
- return sDir + sPath.substr(nStart);
- }
- };
-
- /* jshint ignore:start */
- if(typeof exports === 'object' && typeof module === 'object')
- module.exports = URLToolkit;
- else if(typeof define === 'function' && define.amd)
- define([], function() { return URLToolkit; });
- else if(typeof exports === 'object')
- exports["URLToolkit"] = URLToolkit;
- else
- root["URLToolkit"] = URLToolkit;
- })(this);
- /* jshint ignore:end */
-
- },{}],62:[function(require,module,exports){
- (function (global){
- /**
- * @file add-text-track-data.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- /**
- * 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
- */
- var deprecateOldCue = function deprecateOldCue(cue) {
- Object.defineProperties(cue.frame, {
- id: {
- get: function get() {
- _videoJs2['default'].log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');
- return cue.value.key;
- }
- },
- value: {
- get: function get() {
- _videoJs2['default'].log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');
- return cue.value.data;
- }
- },
- privateData: {
- get: function get() {
- _videoJs2['default'].log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');
- return cue.value.data;
- }
- }
- });
- };
-
- var durationOfVideo = function durationOfVideo(duration) {
- var dur = undefined;
-
- if (isNaN(duration) || Math.abs(duration) === Infinity) {
- dur = Number.MAX_VALUE;
- } else {
- dur = duration;
- }
- return dur;
- };
- /**
- * Add text track data to a source handler given the captions and
- * metadata from the buffer.
- *
- * @param {Object} sourceHandler the flash or virtual source buffer
- * @param {Array} captionArray an array of caption data
- * @param {Array} cue an array of meta data
- * @private
- */
- var addTextTrackData = function addTextTrackData(sourceHandler, captionArray, metadataArray) {
- var Cue = _globalWindow2['default'].WebKitDataCue || _globalWindow2['default'].VTTCue;
-
- if (captionArray) {
- captionArray.forEach(function (caption) {
- this.inbandTextTrack_.addCue(new Cue(caption.startTime + this.timestampOffset, caption.endTime + this.timestampOffset, caption.text));
- }, sourceHandler);
- }
-
- if (metadataArray) {
- (function () {
- var videoDuration = durationOfVideo(sourceHandler.mediaSource_.duration);
-
- metadataArray.forEach(function (metadata) {
- var time = metadata.cueTime + this.timestampOffset;
-
- metadata.frames.forEach(function (frame) {
- var cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
-
- cue.frame = frame;
- cue.value = frame;
- deprecateOldCue(cue);
-
- this.metadataTrack_.addCue(cue);
- }, this);
- }, sourceHandler);
-
- // 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
- if (sourceHandler.metadataTrack_ && sourceHandler.metadataTrack_.cues && sourceHandler.metadataTrack_.cues.length) {
- (function () {
- var cues = sourceHandler.metadataTrack_.cues;
- var cuesArray = [];
-
- // Create a copy of the TextTrackCueList...
- // ...disregarding cues with a falsey value
- for (var i = 0; i < cues.length; i++) {
- if (cues[i]) {
- cuesArray.push(cues[i]);
- }
- }
-
- // Group cues by their startTime value
- var cuesGroupedByStartTime = cuesArray.reduce(function (obj, cue) {
- var timeSlot = obj[cue.startTime] || [];
-
- timeSlot.push(cue);
- obj[cue.startTime] = timeSlot;
-
- return obj;
- }, {});
-
- // Sort startTimes by ascending order
- var sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort(function (a, b) {
- return Number(a) - Number(b);
- });
-
- // Map each cue group's endTime to the next group's startTime
- sortedStartTimes.forEach(function (startTime, idx) {
- var cueGroup = cuesGroupedByStartTime[startTime];
- var nextTime = Number(sortedStartTimes[idx + 1]) || videoDuration;
-
- // Map each cue's endTime the next group's startTime
- cueGroup.forEach(function (cue) {
- cue.endTime = nextTime;
- });
- });
- })();
- }
- })();
- }
- };
-
- exports['default'] = {
- addTextTrackData: addTextTrackData,
- durationOfVideo: durationOfVideo
- };
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"global/window":30}],63:[function(require,module,exports){
- /**
- * Remove the text track from the player if one with matching kind and
- * label properties already exists on the player
- *
- * @param {Object} player the video.js player object
- * @param {String} kind to be considered the text track's `kind` must match
- * @param {String} label to be considered the text track's `label` must match
- * @private
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- var removeExistingTrack = function removeExistingTrack(player, kind, label) {
- var tracks = player.remoteTextTracks() || [];
-
- for (var i = 0; i < tracks.length; i++) {
- var track = tracks[i];
-
- if (track.kind === kind && track.label === label) {
- player.removeRemoteTextTrack(track);
- }
- }
- };
-
- exports.removeExistingTrack = removeExistingTrack;
- /**
- * Cleaup text tracks on video.js if they exist
- *
- * @param {Object} player the video.js player object
- * @private
- */
- var cleanupTextTracks = function cleanupTextTracks(player) {
- removeExistingTrack(player, 'captions', 'cc1');
- removeExistingTrack(player, 'metadata', 'Timed Metadata');
- };
- exports.cleanupTextTracks = cleanupTextTracks;
- },{}],64:[function(require,module,exports){
- /**
- * @file codec-utils.js
- */
-
- /**
- * Check if a codec string refers to an audio codec.
- *
- * @param {String} codec codec string to check
- * @return {Boolean} if this is an audio codec
- * @private
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
- var isAudioCodec = function isAudioCodec(codec) {
- return (/mp4a\.\d+.\d+/i.test(codec)
- );
- };
-
- /**
- * Check if a codec string refers to a video codec.
- *
- * @param {String} codec codec string to check
- * @return {Boolean} if this is a video codec
- * @private
- */
- var isVideoCodec = function isVideoCodec(codec) {
- return (/avc1\.[\da-f]+/i.test(codec)
- );
- };
-
- /**
- * Parse a content type header into a type and parameters
- * object
- *
- * @param {String} type the content type header
- * @return {Object} the parsed content-type
- * @private
- */
- var parseContentType = function parseContentType(type) {
- var object = { type: '', parameters: {} };
- var parameters = type.trim().split(';');
-
- // first parameter should always be content-type
- object.type = parameters.shift().trim();
- parameters.forEach(function (parameter) {
- var pair = parameter.trim().split('=');
-
- if (pair.length > 1) {
- var _name = pair[0].replace(/"/g, '').trim();
- var value = pair[1].replace(/"/g, '').trim();
-
- object.parameters[_name] = value;
- }
- });
-
- return object;
- };
-
- /**
- * Replace the old apple-style `avc1.<dd>.<dd>` codec string with the standard
- * `avc1.<hhhhhh>`
- *
- * @param {Array} codecs an array of codec strings to fix
- * @return {Array} the translated codec array
- * @private
- */
- var translateLegacyCodecs = function translateLegacyCodecs(codecs) {
- return codecs.map(function (codec) {
- return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) {
- var profileHex = ('00' + Number(profile).toString(16)).slice(-2);
- var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);
-
- return 'avc1.' + profileHex + '00' + avcLevelHex;
- });
- });
- };
-
- exports['default'] = {
- isAudioCodec: isAudioCodec,
- parseContentType: parseContentType,
- isVideoCodec: isVideoCodec,
- translateLegacyCodecs: translateLegacyCodecs
- };
- module.exports = exports['default'];
- },{}],65:[function(require,module,exports){
- /**
- * @file create-text-tracks-if-necessary.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _cleanupTextTracks = require('./cleanup-text-tracks');
-
- /**
- * Create text tracks on video.js if they exist on a segment.
- *
- * @param {Object} sourceBuffer the VSB or FSB
- * @param {Object} mediaSource the HTML or Flash media source
- * @param {Object} segment the segment that may contain the text track
- * @private
- */
- var createTextTracksIfNecessary = function createTextTracksIfNecessary(sourceBuffer, mediaSource, segment) {
- var player = mediaSource.player_;
-
- // create an in-band caption track if one is present in the segment
- if (segment.captions && segment.captions.length && !sourceBuffer.inbandTextTrack_) {
- (0, _cleanupTextTracks.removeExistingTrack)(player, 'captions', 'cc1');
- sourceBuffer.inbandTextTrack_ = player.addRemoteTextTrack({
- kind: 'captions',
- label: 'cc1'
- }, false).track;
- }
-
- if (segment.metadata && segment.metadata.length && !sourceBuffer.metadataTrack_) {
- (0, _cleanupTextTracks.removeExistingTrack)(player, 'metadata', 'Timed Metadata', true);
- sourceBuffer.metadataTrack_ = player.addRemoteTextTrack({
- kind: 'metadata',
- label: 'Timed Metadata'
- }, false).track;
- sourceBuffer.metadataTrack_.inBandMetadataTrackDispatchType = segment.metadata.dispatchType;
- }
- };
-
- exports['default'] = createTextTracksIfNecessary;
- module.exports = exports['default'];
- },{"./cleanup-text-tracks":63}],66:[function(require,module,exports){
- /**
- * @file flash-constants.js
- */
- /**
- * The maximum size in bytes for append operations to the video.js
- * SWF. Calling through to Flash blocks and can be expensive so
- * we chunk data and pass through 4KB at a time, yielding to the
- * browser between chunks. This gives a theoretical maximum rate of
- * 1MB/s into Flash. Any higher and we begin to drop frames and UI
- * responsiveness suffers.
- *
- * @private
- */
- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- var flashConstants = {
- // times in milliseconds
- TIME_BETWEEN_CHUNKS: 1,
- BYTES_PER_CHUNK: 1024 * 32
- };
-
- exports["default"] = flashConstants;
- module.exports = exports["default"];
- },{}],67:[function(require,module,exports){
- (function (global){
- /**
- * @file flash-media-source.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _globalDocument = require('global/document');
-
- var _globalDocument2 = _interopRequireDefault(_globalDocument);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _flashSourceBuffer = require('./flash-source-buffer');
-
- var _flashSourceBuffer2 = _interopRequireDefault(_flashSourceBuffer);
-
- var _flashConstants = require('./flash-constants');
-
- var _flashConstants2 = _interopRequireDefault(_flashConstants);
-
- var _codecUtils = require('./codec-utils');
-
- var _cleanupTextTracks = require('./cleanup-text-tracks');
-
- /**
- * A flash implmentation of HTML MediaSources and a polyfill
- * for browsers that don't support native or HTML MediaSources..
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
- * @class FlashMediaSource
- * @extends videojs.EventTarget
- */
-
- var FlashMediaSource = (function (_videojs$EventTarget) {
- _inherits(FlashMediaSource, _videojs$EventTarget);
-
- function FlashMediaSource() {
- var _this = this;
-
- _classCallCheck(this, FlashMediaSource);
-
- _get(Object.getPrototypeOf(FlashMediaSource.prototype), 'constructor', this).call(this);
- this.sourceBuffers = [];
- this.readyState = 'closed';
-
- this.on(['sourceopen', 'webkitsourceopen'], function (event) {
- // find the swf where we will push media data
- _this.swfObj = _globalDocument2['default'].getElementById(event.swfId);
- _this.player_ = (0, _videoJs2['default'])(_this.swfObj.parentNode);
- _this.tech_ = _this.swfObj.tech;
- _this.readyState = 'open';
-
- _this.tech_.on('seeking', function () {
- var i = _this.sourceBuffers.length;
-
- while (i--) {
- _this.sourceBuffers[i].abort();
- }
- });
-
- if (_this.tech_.hls) {
- _this.tech_.hls.on('dispose', function () {
- (0, _cleanupTextTracks.cleanupTextTracks)(_this.player_);
- });
- }
-
- // trigger load events
- if (_this.swfObj) {
- _this.swfObj.vjs_load();
- }
- });
- }
-
- /**
- * Set or return the presentation duration.
- *
- * @param {Double} value the duration of the media in seconds
- * @param {Double} the current presentation duration
- * @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
- */
-
- /**
- * We have this function so that the html and flash interfaces
- * are the same.
- *
- * @private
- */
-
- _createClass(FlashMediaSource, [{
- key: 'addSeekableRange_',
- value: function addSeekableRange_() {}
- // intentional no-op
-
- /**
- * Create a new flash source buffer and add it to our flash media source.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer
- * @param {String} type the content-type of the source
- * @return {Object} the flash source buffer
- */
-
- }, {
- key: 'addSourceBuffer',
- value: function addSourceBuffer(type) {
- var parsedType = (0, _codecUtils.parseContentType)(type);
- var sourceBuffer = undefined;
-
- // if this is an FLV type, we'll push data to flash
- if (parsedType.type === 'video/mp2t') {
- // Flash source buffers
- sourceBuffer = new _flashSourceBuffer2['default'](this);
- } else {
- throw new Error('NotSupportedError (Video.js)');
- }
-
- this.sourceBuffers.push(sourceBuffer);
- return sourceBuffer;
- }
-
- /**
- * Signals the end of the stream.
- *
- * @link https://w3c.github.io/media-source/#widl-MediaSource-endOfStream-void-EndOfStreamError-error
- * @param {String=} error Signals that a playback error
- * has occurred. If specified, it must be either "network" or
- * "decode".
- */
- }, {
- key: 'endOfStream',
- value: function endOfStream(error) {
- if (error === 'network') {
- // MEDIA_ERR_NETWORK
- this.tech_.error(2);
- } else if (error === 'decode') {
- // MEDIA_ERR_DECODE
- this.tech_.error(3);
- }
- if (this.readyState !== 'ended') {
- this.readyState = 'ended';
- this.swfObj.vjs_endOfStream();
- }
- }
- }]);
-
- return FlashMediaSource;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = FlashMediaSource;
- try {
- Object.defineProperty(FlashMediaSource.prototype, 'duration', {
- /**
- * Return the presentation duration.
- *
- * @return {Double} the duration of the media in seconds
- * @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
- */
- get: function get() {
- if (!this.swfObj) {
- return NaN;
- }
- // get the current duration from the SWF
- return this.swfObj.vjs_getProperty('duration');
- },
- /**
- * Set the presentation duration.
- *
- * @param {Double} value the duration of the media in seconds
- * @return {Double} the duration of the media in seconds
- * @link http://www.w3.org/TR/media-source/#widl-MediaSource-duration
- */
- set: function set(value) {
- var i = undefined;
- var oldDuration = this.swfObj.vjs_getProperty('duration');
-
- this.swfObj.vjs_setProperty('duration', value);
-
- if (value < oldDuration) {
- // In MSE, this triggers the range removal algorithm which causes
- // an update to occur
- for (i = 0; i < this.sourceBuffers.length; i++) {
- this.sourceBuffers[i].remove(value, oldDuration);
- }
- }
-
- return value;
- }
- });
- } catch (e) {
- // IE8 throws if defineProperty is called on a non-DOM node. We
- // don't support IE8 but we shouldn't throw an error if loaded
- // there.
- FlashMediaSource.prototype.duration = NaN;
- }
-
- for (var property in _flashConstants2['default']) {
- FlashMediaSource[property] = _flashConstants2['default'][property];
- }
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./cleanup-text-tracks":63,"./codec-utils":64,"./flash-constants":66,"./flash-source-buffer":68,"global/document":29}],68:[function(require,module,exports){
- (function (global){
- /**
- * @file flash-source-buffer.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _muxJsLibFlv = require('mux.js/lib/flv');
-
- var _muxJsLibFlv2 = _interopRequireDefault(_muxJsLibFlv);
-
- var _removeCuesFromTrack = require('./remove-cues-from-track');
-
- var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack);
-
- var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary');
-
- var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary);
-
- var _addTextTrackData = require('./add-text-track-data');
-
- var _flashTransmuxerWorker = require('./flash-transmuxer-worker');
-
- var _flashTransmuxerWorker2 = _interopRequireDefault(_flashTransmuxerWorker);
-
- var _webworkify = require('webworkify');
-
- var _webworkify2 = _interopRequireDefault(_webworkify);
-
- var _flashConstants = require('./flash-constants');
-
- var _flashConstants2 = _interopRequireDefault(_flashConstants);
-
- /**
- * A wrapper around the setTimeout function that uses
- * the flash constant time between ticks value.
- *
- * @param {Function} func the function callback to run
- * @private
- */
- var scheduleTick = function scheduleTick(func) {
- // Chrome doesn't invoke requestAnimationFrame callbacks
- // in background tabs, so use setTimeout.
- _globalWindow2['default'].setTimeout(func, _flashConstants2['default'].TIME_BETWEEN_CHUNKS);
- };
-
- /**
- * Generates a random string of max length 6
- *
- * @return {String} the randomly generated string
- * @function generateRandomString
- * @private
- */
- var generateRandomString = function generateRandomString() {
- return Math.random().toString(36).slice(2, 8);
- };
-
- /**
- * Round a number to a specified number of places much like
- * toFixed but return a number instead of a string representation.
- *
- * @param {Number} num A number
- * @param {Number} places The number of decimal places which to
- * round
- * @private
- */
- var toDecimalPlaces = function toDecimalPlaces(num, places) {
- if (typeof places !== 'number' || places < 0) {
- places = 0;
- }
-
- var scale = Math.pow(10, places);
-
- return Math.round(num * scale) / scale;
- };
-
- /**
- * A SourceBuffer implementation for Flash rather than HTML.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
- * @param {Object} mediaSource the flash media source
- * @class FlashSourceBuffer
- * @extends videojs.EventTarget
- */
-
- var FlashSourceBuffer = (function (_videojs$EventTarget) {
- _inherits(FlashSourceBuffer, _videojs$EventTarget);
-
- function FlashSourceBuffer(mediaSource) {
- var _this = this;
-
- _classCallCheck(this, FlashSourceBuffer);
-
- _get(Object.getPrototypeOf(FlashSourceBuffer.prototype), 'constructor', this).call(this);
- var encodedHeader = undefined;
-
- // Start off using the globally defined value but refine
- // as we append data into flash
- this.chunkSize_ = _flashConstants2['default'].BYTES_PER_CHUNK;
-
- // byte arrays queued to be appended
- this.buffer_ = [];
-
- // the total number of queued bytes
- this.bufferSize_ = 0;
-
- // to be able to determine the correct position to seek to, we
- // need to retain information about the mapping between the
- // media timeline and PTS values
- this.basePtsOffset_ = NaN;
-
- this.mediaSource_ = mediaSource;
-
- this.audioBufferEnd_ = NaN;
- this.videoBufferEnd_ = NaN;
-
- // indicates whether the asynchronous continuation of an operation
- // is still being processed
- // see https://w3c.github.io/media-source/#widl-SourceBuffer-updating
- this.updating = false;
- this.timestampOffset_ = 0;
-
- encodedHeader = _globalWindow2['default'].btoa(String.fromCharCode.apply(null, Array.prototype.slice.call(_muxJsLibFlv2['default'].getFlvHeader())));
-
- // create function names with added randomness for the global callbacks flash will use
- // to get data from javascript into the swf. Random strings are added as a safety
- // measure for pages with multiple players since these functions will be global
- // instead of per instance. When making a call to the swf, the browser generates a
- // try catch code snippet, but just takes the function name and writes out an unquoted
- // call to that function. If the player id has any special characters, this will result
- // in an error, so safePlayerId replaces all special characters to '_'
- var safePlayerId = this.mediaSource_.player_.id().replace(/[^a-zA-Z0-9]/g, '_');
-
- this.flashEncodedHeaderName_ = 'vjs_flashEncodedHeader_' + safePlayerId + generateRandomString();
- this.flashEncodedDataName_ = 'vjs_flashEncodedData_' + safePlayerId + generateRandomString();
-
- _globalWindow2['default'][this.flashEncodedHeaderName_] = function () {
- delete _globalWindow2['default'][_this.flashEncodedHeaderName_];
- return encodedHeader;
- };
-
- this.mediaSource_.swfObj.vjs_appendChunkReady(this.flashEncodedHeaderName_);
-
- this.transmuxer_ = (0, _webworkify2['default'])(_flashTransmuxerWorker2['default']);
- this.transmuxer_.postMessage({ action: 'init', options: {} });
- this.transmuxer_.onmessage = function (event) {
- if (event.data.action === 'data') {
- _this.receiveBuffer_(event.data.segment);
- }
- };
-
- this.one('updateend', function () {
- _this.mediaSource_.tech_.trigger('loadedmetadata');
- });
-
- Object.defineProperty(this, 'timestampOffset', {
- get: function get() {
- return this.timestampOffset_;
- },
- set: function set(val) {
- if (typeof val === 'number' && val >= 0) {
- this.timestampOffset_ = val;
- // We have to tell flash to expect a discontinuity
- this.mediaSource_.swfObj.vjs_discontinuity();
- // the media <-> PTS mapping must be re-established after
- // the discontinuity
- this.basePtsOffset_ = NaN;
- this.audioBufferEnd_ = NaN;
- this.videoBufferEnd_ = NaN;
-
- this.transmuxer_.postMessage({ action: 'reset' });
- }
- }
- });
-
- Object.defineProperty(this, 'buffered', {
- get: function get() {
- if (!this.mediaSource_ || !this.mediaSource_.swfObj || !('vjs_getProperty' in this.mediaSource_.swfObj)) {
- return _videoJs2['default'].createTimeRange();
- }
-
- var buffered = this.mediaSource_.swfObj.vjs_getProperty('buffered');
-
- if (buffered && buffered.length) {
- buffered[0][0] = toDecimalPlaces(buffered[0][0], 3);
- buffered[0][1] = toDecimalPlaces(buffered[0][1], 3);
- }
- return _videoJs2['default'].createTimeRanges(buffered);
- }
- });
-
- // On a seek we remove all text track data since flash has no concept
- // of a buffered-range and everything else is reset on seek
- this.mediaSource_.player_.on('seeked', function () {
- (0, _removeCuesFromTrack2['default'])(0, Infinity, _this.metadataTrack_);
- (0, _removeCuesFromTrack2['default'])(0, Infinity, _this.inbandTextTrack_);
- });
-
- this.mediaSource_.player_.tech_.hls.on('dispose', function () {
- _this.transmuxer_.terminate();
- });
- }
-
- /**
- * Append bytes to the sourcebuffers buffer, in this case we
- * have to append it to swf object.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
- * @param {Array} bytes
- */
-
- _createClass(FlashSourceBuffer, [{
- key: 'appendBuffer',
- value: function appendBuffer(bytes) {
- var error = undefined;
-
- if (this.updating) {
- error = new Error('SourceBuffer.append() cannot be called ' + 'while an update is in progress');
- error.name = 'InvalidStateError';
- error.code = 11;
- throw error;
- }
- this.updating = true;
- this.mediaSource_.readyState = 'open';
- this.trigger({ type: 'update' });
-
- this.transmuxer_.postMessage({
- action: 'push',
- data: bytes.buffer,
- byteOffset: bytes.byteOffset,
- byteLength: bytes.byteLength
- }, [bytes.buffer]);
- this.transmuxer_.postMessage({ action: 'flush' });
- }
-
- /**
- * Reset the parser and remove any data queued to be sent to the SWF.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
- */
- }, {
- key: 'abort',
- value: function abort() {
- this.buffer_ = [];
- this.bufferSize_ = 0;
- this.mediaSource_.swfObj.vjs_abort();
-
- // report any outstanding updates have ended
- if (this.updating) {
- this.updating = false;
- this.trigger({ type: 'updateend' });
- }
- }
-
- /**
- * Flash cannot remove ranges already buffered in the NetStream
- * but seeking clears the buffer entirely. For most purposes,
- * having this operation act as a no-op is acceptable.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
- * @param {Double} start start of the section to remove
- * @param {Double} end end of the section to remove
- */
- }, {
- key: 'remove',
- value: function remove(start, end) {
- (0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_);
- (0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTrack_);
- this.trigger({ type: 'update' });
- this.trigger({ type: 'updateend' });
- }
-
- /**
- * Receive a buffer from the flv.
- *
- * @param {Object} segment
- * @private
- */
- }, {
- key: 'receiveBuffer_',
- value: function receiveBuffer_(segment) {
- var _this2 = this;
-
- // create an in-band caption track if one is present in the segment
- (0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource_, segment);
- (0, _addTextTrackData.addTextTrackData)(this, segment.captions, segment.metadata);
-
- // Do this asynchronously since convertTagsToData_ can be time consuming
- scheduleTick(function () {
- var flvBytes = _this2.convertTagsToData_(segment);
-
- if (_this2.buffer_.length === 0) {
- scheduleTick(_this2.processBuffer_.bind(_this2));
- }
-
- if (flvBytes) {
- _this2.buffer_.push(flvBytes);
- _this2.bufferSize_ += flvBytes.byteLength;
- }
- });
- }
-
- /**
- * Append a portion of the current buffer to the SWF.
- *
- * @private
- */
- }, {
- key: 'processBuffer_',
- value: function processBuffer_() {
- var _this3 = this;
-
- var chunkSize = _flashConstants2['default'].BYTES_PER_CHUNK;
-
- if (!this.buffer_.length) {
- if (this.updating !== false) {
- this.updating = false;
- this.trigger({ type: 'updateend' });
- }
- // do nothing if the buffer is empty
- return;
- }
-
- // concatenate appends up to the max append size
- var chunk = this.buffer_[0].subarray(0, chunkSize);
-
- // requeue any bytes that won't make it this round
- if (chunk.byteLength < chunkSize || this.buffer_[0].byteLength === chunkSize) {
- this.buffer_.shift();
- } else {
- this.buffer_[0] = this.buffer_[0].subarray(chunkSize);
- }
-
- this.bufferSize_ -= chunk.byteLength;
-
- // base64 encode the bytes
- var binary = [];
- var length = chunk.byteLength;
-
- for (var i = 0; i < length; i++) {
- binary.push(String.fromCharCode(chunk[i]));
- }
- var b64str = _globalWindow2['default'].btoa(binary.join(''));
-
- _globalWindow2['default'][this.flashEncodedDataName_] = function () {
- // schedule another processBuffer to process any left over data or to
- // trigger updateend
- scheduleTick(_this3.processBuffer_.bind(_this3));
- delete _globalWindow2['default'][_this3.flashEncodedDataName_];
- return b64str;
- };
-
- // Notify the swf that segment data is ready to be appended
- this.mediaSource_.swfObj.vjs_appendChunkReady(this.flashEncodedDataName_);
- }
-
- /**
- * Turns an array of flv tags into a Uint8Array representing the
- * flv data. Also removes any tags that are before the current
- * time so that playback begins at or slightly after the right
- * place on a seek
- *
- * @private
- * @param {Object} segmentData object of segment data
- */
- }, {
- key: 'convertTagsToData_',
- value: function convertTagsToData_(segmentData) {
- var segmentByteLength = 0;
- var tech = this.mediaSource_.tech_;
- var videoTargetPts = 0;
- var segment = undefined;
- var videoTags = segmentData.tags.videoTags;
- var audioTags = segmentData.tags.audioTags;
-
- // Establish the media timeline to PTS translation if we don't
- // have one already
- if (isNaN(this.basePtsOffset_) && (videoTags.length || audioTags.length)) {
- // We know there is at least one video or audio tag, but since we may not have both,
- // we use pts: Infinity for the missing tag. The will force the following Math.min
- // call will to use the proper pts value since it will always be less than Infinity
- var firstVideoTag = videoTags[0] || { pts: Infinity };
- var firstAudioTag = audioTags[0] || { pts: Infinity };
-
- this.basePtsOffset_ = Math.min(firstAudioTag.pts, firstVideoTag.pts);
- }
-
- if (tech.seeking()) {
- // Do not use previously saved buffer end values while seeking since buffer
- // is cleared on all seeks
- this.videoBufferEnd_ = NaN;
- this.audioBufferEnd_ = NaN;
- }
-
- if (isNaN(this.videoBufferEnd_)) {
- if (tech.buffered().length) {
- videoTargetPts = tech.buffered().end(0) - this.timestampOffset;
- }
-
- // Trim to currentTime if seeking
- if (tech.seeking()) {
- videoTargetPts = Math.max(videoTargetPts, tech.currentTime() - this.timestampOffset);
- }
-
- // PTS values are represented in milliseconds
- videoTargetPts *= 1e3;
- videoTargetPts += this.basePtsOffset_;
- } else {
- // Add a fudge factor of 0.1 to the last video pts appended since a rendition change
- // could append an overlapping segment, in which case there is a high likelyhood
- // a tag could have a matching pts to videoBufferEnd_, which would cause
- // that tag to get appended by the tag.pts >= targetPts check below even though it
- // is a duplicate of what was previously appended
- videoTargetPts = this.videoBufferEnd_ + 0.1;
- }
-
- // filter complete GOPs with a presentation time less than the seek target/end of buffer
- var currentIndex = videoTags.length;
-
- // if the last tag is beyond videoTargetPts, then do not search the list for a GOP
- // since our videoTargetPts lies in a future segment
- if (currentIndex && videoTags[currentIndex - 1].pts >= videoTargetPts) {
- // Start by walking backwards from the end of the list until we reach a tag that
- // is equal to or less than videoTargetPts
- while (--currentIndex) {
- var currentTag = videoTags[currentIndex];
-
- if (currentTag.pts > videoTargetPts) {
- continue;
- }
-
- // if we see a keyFrame or metadata tag once we've gone below videoTargetPts,
- // exit the loop as this is the start of the GOP that we want to append
- if (currentTag.keyFrame || currentTag.metaDataTag) {
- break;
- }
- }
-
- // We need to check if there are any metadata tags that come before currentIndex
- // as those will be metadata tags associated with the GOP we are appending
- // There could be 0 to 2 metadata tags that come before the currentIndex depending
- // on what videoTargetPts is and whether the transmuxer prepended metadata tags to this
- // key frame
- while (currentIndex) {
- var nextTag = videoTags[currentIndex - 1];
-
- if (!nextTag.metaDataTag) {
- break;
- }
-
- currentIndex--;
- }
- }
-
- var filteredVideoTags = videoTags.slice(currentIndex);
-
- var audioTargetPts = undefined;
-
- if (isNaN(this.audioBufferEnd_)) {
- audioTargetPts = videoTargetPts;
- } else {
- // Add a fudge factor of 0.1 to the last video pts appended since a rendition change
- // could append an overlapping segment, in which case there is a high likelyhood
- // a tag could have a matching pts to videoBufferEnd_, which would cause
- // that tag to get appended by the tag.pts >= targetPts check below even though it
- // is a duplicate of what was previously appended
- audioTargetPts = this.audioBufferEnd_ + 0.1;
- }
-
- if (filteredVideoTags.length) {
- // If targetPts intersects a GOP and we appended the tags for the GOP that came
- // before targetPts, we want to make sure to trim audio tags at the pts
- // of the first video tag to avoid brief moments of silence
- audioTargetPts = Math.min(audioTargetPts, filteredVideoTags[0].pts);
- }
-
- // skip tags with a presentation time less than the seek target/end of buffer
- currentIndex = 0;
-
- while (currentIndex < audioTags.length) {
- if (audioTags[currentIndex].pts >= audioTargetPts) {
- break;
- }
-
- currentIndex++;
- }
-
- var filteredAudioTags = audioTags.slice(currentIndex);
-
- // update the audio and video buffer ends
- if (filteredAudioTags.length) {
- this.audioBufferEnd_ = filteredAudioTags[filteredAudioTags.length - 1].pts;
- }
- if (filteredVideoTags.length) {
- this.videoBufferEnd_ = filteredVideoTags[filteredVideoTags.length - 1].pts;
- }
-
- var tags = this.getOrderedTags_(filteredVideoTags, filteredAudioTags);
-
- if (tags.length === 0) {
- return;
- }
-
- // If we are appending data that comes before our target pts, we want to tell
- // the swf to adjust its notion of current time to account for the extra tags
- // we are appending to complete the GOP that intersects with targetPts
- if (tags[0].pts < videoTargetPts && tech.seeking()) {
- var fudgeFactor = 1 / 30;
- var currentTime = tech.currentTime();
- var diff = (videoTargetPts - tags[0].pts) / 1e3;
- var adjustedTime = currentTime - diff;
-
- if (adjustedTime < fudgeFactor) {
- adjustedTime = 0;
- }
-
- try {
- this.mediaSource_.swfObj.vjs_adjustCurrentTime(adjustedTime);
- } catch (e) {
- // no-op for backwards compatability of swf. If adjustCurrentTime fails,
- // the swf may incorrectly report currentTime and buffered ranges
- // but should not affect playback over than the time displayed on the
- // progress bar is inaccurate
- }
- }
-
- // concatenate the bytes into a single segment
- for (var i = 0; i < tags.length; i++) {
- segmentByteLength += tags[i].bytes.byteLength;
- }
- segment = new Uint8Array(segmentByteLength);
- for (var i = 0, j = 0; i < tags.length; i++) {
- segment.set(tags[i].bytes, j);
- j += tags[i].bytes.byteLength;
- }
-
- return segment;
- }
-
- /**
- * Assemble the FLV tags in decoder order.
- *
- * @private
- * @param {Array} videoTags list of video tags
- * @param {Array} audioTags list of audio tags
- */
- }, {
- key: 'getOrderedTags_',
- value: function getOrderedTags_(videoTags, audioTags) {
- var tag = undefined;
- var tags = [];
-
- while (videoTags.length || audioTags.length) {
- if (!videoTags.length) {
- // only audio tags remain
- tag = audioTags.shift();
- } else if (!audioTags.length) {
- // only video tags remain
- tag = videoTags.shift();
- } else if (audioTags[0].dts < videoTags[0].dts) {
- // audio should be decoded next
- tag = audioTags.shift();
- } else {
- // video should be decoded next
- tag = videoTags.shift();
- }
-
- tags.push(tag);
- }
-
- return tags;
- }
- }]);
-
- return FlashSourceBuffer;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = FlashSourceBuffer;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./add-text-track-data":62,"./create-text-tracks-if-necessary":65,"./flash-constants":66,"./flash-transmuxer-worker":69,"./remove-cues-from-track":71,"global/window":30,"mux.js/lib/flv":44,"webworkify":75}],69:[function(require,module,exports){
- /**
- * @file flash-transmuxer-worker.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _muxJsLibFlv = require('mux.js/lib/flv');
-
- var _muxJsLibFlv2 = _interopRequireDefault(_muxJsLibFlv);
-
- /**
- * 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
- */
- var wireTransmuxerEvents = function wireTransmuxerEvents(transmuxer) {
- transmuxer.on('data', function (segment) {
- _globalWindow2['default'].postMessage({
- action: 'data',
- segment: segment
- });
- });
-
- transmuxer.on('done', function (data) {
- _globalWindow2['default'].postMessage({ action: 'done' });
- });
- };
-
- /**
- * 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
- */
-
- var MessageHandlers = (function () {
- function MessageHandlers(options) {
- _classCallCheck(this, MessageHandlers);
-
- this.options = options || {};
- this.init();
- }
-
- /**
- * Our web wroker 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
- */
-
- /**
- * initialize our web worker and wire all the events.
- */
-
- _createClass(MessageHandlers, [{
- key: 'init',
- value: function init() {
- if (this.transmuxer) {
- this.transmuxer.dispose();
- }
- this.transmuxer = new _muxJsLibFlv2['default'].Transmuxer(this.options);
- wireTransmuxerEvents(this.transmuxer);
- }
-
- /**
- * Adds data (a ts segment) to the start of the transmuxer pipeline for
- * processing.
- *
- * @param {ArrayBuffer} data data to push into the muxer
- */
- }, {
- key: 'push',
- value: function push(data) {
- // Cast array buffer to correct type for transmuxer
- var 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.
- */
- }, {
- key: 'reset',
- value: function reset() {
- this.init();
- }
-
- /**
- * Forces the pipeline to finish processing the last segment and emit its
- * results.
- */
- }, {
- key: 'flush',
- value: function flush() {
- this.transmuxer.flush();
- }
- }]);
-
- return MessageHandlers;
- })();
-
- var FlashTransmuxerWorker = function FlashTransmuxerWorker(self) {
- self.onmessage = function (event) {
- if (event.data.action === 'init' && event.data.options) {
- this.messageHandlers = new MessageHandlers(event.data.options);
- return;
- }
-
- if (!this.messageHandlers) {
- this.messageHandlers = new MessageHandlers();
- }
-
- if (event.data && event.data.action && event.data.action !== 'init') {
- if (this.messageHandlers[event.data.action]) {
- this.messageHandlers[event.data.action](event.data);
- }
- }
- };
- };
-
- exports['default'] = function (self) {
- return new FlashTransmuxerWorker(self);
- };
-
- module.exports = exports['default'];
- },{"global/window":30,"mux.js/lib/flv":44}],70:[function(require,module,exports){
- (function (global){
- /**
- * @file html-media-source.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _globalDocument = require('global/document');
-
- var _globalDocument2 = _interopRequireDefault(_globalDocument);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _virtualSourceBuffer = require('./virtual-source-buffer');
-
- var _virtualSourceBuffer2 = _interopRequireDefault(_virtualSourceBuffer);
-
- var _addTextTrackData = require('./add-text-track-data');
-
- var _codecUtils = require('./codec-utils');
-
- var _cleanupTextTracks = require('./cleanup-text-tracks');
-
- /**
- * Our MediaSource implementation in HTML, mimics native
- * MediaSource where/if possible.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource
- * @class HtmlMediaSource
- * @extends videojs.EventTarget
- */
-
- var HtmlMediaSource = (function (_videojs$EventTarget) {
- _inherits(HtmlMediaSource, _videojs$EventTarget);
-
- function HtmlMediaSource() {
- var _this = this;
-
- _classCallCheck(this, HtmlMediaSource);
-
- _get(Object.getPrototypeOf(HtmlMediaSource.prototype), 'constructor', this).call(this);
- var property = undefined;
-
- this.nativeMediaSource_ = new _globalWindow2['default'].MediaSource();
- // delegate to the native MediaSource's methods by default
- for (property in this.nativeMediaSource_) {
- if (!(property in HtmlMediaSource.prototype) && typeof this.nativeMediaSource_[property] === 'function') {
- this[property] = this.nativeMediaSource_[property].bind(this.nativeMediaSource_);
- }
- }
-
- // emulate `duration` and `seekable` until seeking can be
- // handled uniformly for live streams
- // see https://github.com/w3c/media-source/issues/5
- this.duration_ = NaN;
- Object.defineProperty(this, 'duration', {
- get: function get() {
- if (this.duration_ === Infinity) {
- return this.duration_;
- }
- return this.nativeMediaSource_.duration;
- },
- set: function set(duration) {
- this.duration_ = duration;
- if (duration !== Infinity) {
- this.nativeMediaSource_.duration = duration;
- return;
- }
- }
- });
- Object.defineProperty(this, 'seekable', {
- get: function get() {
- if (this.duration_ === Infinity) {
- return _videoJs2['default'].createTimeRanges([[0, this.nativeMediaSource_.duration]]);
- }
- return this.nativeMediaSource_.seekable;
- }
- });
-
- Object.defineProperty(this, 'readyState', {
- get: function get() {
- return this.nativeMediaSource_.readyState;
- }
- });
-
- Object.defineProperty(this, 'activeSourceBuffers', {
- get: function get() {
- return this.activeSourceBuffers_;
- }
- });
-
- // the list of virtual and native SourceBuffers created by this
- // MediaSource
- this.sourceBuffers = [];
-
- this.activeSourceBuffers_ = [];
-
- /**
- * update the list of active source buffers based upon various
- * imformation from HLS and video.js
- *
- * @private
- */
- this.updateActiveSourceBuffers_ = function () {
- // Retain the reference but empty the array
- _this.activeSourceBuffers_.length = 0;
-
- // By default, the audio in the combined virtual source buffer is enabled
- // and the audio-only source buffer (if it exists) is disabled.
- var combined = false;
- var audioOnly = true;
-
- // TODO: maybe we can store the sourcebuffers on the track objects?
- // safari may do something like this
- for (var i = 0; i < _this.player_.audioTracks().length; i++) {
- var track = _this.player_.audioTracks()[i];
-
- if (track.enabled && track.kind !== 'main') {
- // The enabled track is an alternate audio track so disable the audio in
- // the combined source buffer and enable the audio-only source buffer.
- combined = true;
- audioOnly = false;
- break;
- }
- }
-
- // Since we currently support a max of two source buffers, add all of the source
- // buffers (in order).
- _this.sourceBuffers.forEach(function (sourceBuffer) {
- /* eslinst-disable */
- // TODO once codecs are required, we can switch to using the codecs to determine
- // what stream is the video stream, rather than relying on videoTracks
- /* eslinst-enable */
-
- sourceBuffer.appendAudioInitSegment_ = true;
-
- if (sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {
- // combined
- sourceBuffer.audioDisabled_ = combined;
- } else if (sourceBuffer.videoCodec_ && !sourceBuffer.audioCodec_) {
- // If the "combined" source buffer is video only, then we do not want
- // disable the audio-only source buffer (this is mostly for demuxed
- // audio and video hls)
- sourceBuffer.audioDisabled_ = true;
- audioOnly = false;
- } else if (!sourceBuffer.videoCodec_ && sourceBuffer.audioCodec_) {
- // audio only
- sourceBuffer.audioDisabled_ = audioOnly;
- if (audioOnly) {
- return;
- }
- }
-
- _this.activeSourceBuffers_.push(sourceBuffer);
- });
- };
-
- this.onPlayerMediachange_ = function () {
- _this.sourceBuffers.forEach(function (sourceBuffer) {
- sourceBuffer.appendAudioInitSegment_ = true;
- });
- };
-
- // Re-emit MediaSource events on the polyfill
- ['sourceopen', 'sourceclose', 'sourceended'].forEach(function (eventName) {
- this.nativeMediaSource_.addEventListener(eventName, this.trigger.bind(this));
- }, this);
-
- // capture the associated player when the MediaSource is
- // successfully attached
- this.on('sourceopen', function (event) {
- // Get the player this MediaSource is attached to
- var video = _globalDocument2['default'].querySelector('[src="' + _this.url_ + '"]');
-
- if (!video) {
- return;
- }
-
- _this.player_ = (0, _videoJs2['default'])(video.parentNode);
-
- if (_this.player_.audioTracks && _this.player_.audioTracks()) {
- _this.player_.audioTracks().on('change', _this.updateActiveSourceBuffers_);
- _this.player_.audioTracks().on('addtrack', _this.updateActiveSourceBuffers_);
- _this.player_.audioTracks().on('removetrack', _this.updateActiveSourceBuffers_);
- }
-
- _this.player_.on('mediachange', _this.onPlayerMediachange_);
- });
-
- this.on('sourceended', function (event) {
- var duration = (0, _addTextTrackData.durationOfVideo)(_this.duration);
-
- for (var i = 0; i < _this.sourceBuffers.length; i++) {
- var sourcebuffer = _this.sourceBuffers[i];
- var cues = sourcebuffer.metadataTrack_ && sourcebuffer.metadataTrack_.cues;
-
- if (cues && cues.length) {
- cues[cues.length - 1].endTime = duration;
- }
- }
- });
-
- // explicitly terminate any WebWorkers that were created
- // by SourceHandlers
- this.on('sourceclose', function (event) {
- this.sourceBuffers.forEach(function (sourceBuffer) {
- if (sourceBuffer.transmuxer_) {
- sourceBuffer.transmuxer_.terminate();
- }
- });
-
- this.sourceBuffers.length = 0;
- if (!this.player_) {
- return;
- }
-
- (0, _cleanupTextTracks.cleanupTextTracks)(this.player_);
-
- if (this.player_.audioTracks && this.player_.audioTracks()) {
- this.player_.audioTracks().off('change', this.updateActiveSourceBuffers_);
- this.player_.audioTracks().off('addtrack', this.updateActiveSourceBuffers_);
- this.player_.audioTracks().off('removetrack', this.updateActiveSourceBuffers_);
- }
-
- // We can only change this if the player hasn't been disposed of yet
- // because `off` eventually tries to use the el_ property. If it has
- // been disposed of, then don't worry about it because there are no
- // event handlers left to unbind anyway
- if (this.player_.el_) {
- this.player_.off('mediachange', this.onPlayerMediachange_);
- }
- });
- }
-
- /**
- * Add a range that that can now be seeked to.
- *
- * @param {Double} start where to start the addition
- * @param {Double} end where to end the addition
- * @private
- */
-
- _createClass(HtmlMediaSource, [{
- key: 'addSeekableRange_',
- value: function addSeekableRange_(start, end) {
- var error = undefined;
-
- if (this.duration !== Infinity) {
- error = new Error('MediaSource.addSeekableRange() can only be invoked ' + 'when the duration is Infinity');
- error.name = 'InvalidStateError';
- error.code = 11;
- throw error;
- }
-
- if (end > this.nativeMediaSource_.duration || isNaN(this.nativeMediaSource_.duration)) {
- this.nativeMediaSource_.duration = end;
- }
- }
-
- /**
- * Add a source buffer to the media source.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/addSourceBuffer
- * @param {String} type the content-type of the content
- * @return {Object} the created source buffer
- */
- }, {
- key: 'addSourceBuffer',
- value: function addSourceBuffer(type) {
- var buffer = undefined;
- var parsedType = (0, _codecUtils.parseContentType)(type);
-
- // Create a VirtualSourceBuffer to transmux MPEG-2 transport
- // stream segments into fragmented MP4s
- if (/^(video|audio)\/mp2t$/i.test(parsedType.type)) {
- var codecs = [];
-
- if (parsedType.parameters && parsedType.parameters.codecs) {
- codecs = parsedType.parameters.codecs.split(',');
- codecs = (0, _codecUtils.translateLegacyCodecs)(codecs);
- codecs = codecs.filter(function (codec) {
- return (0, _codecUtils.isAudioCodec)(codec) || (0, _codecUtils.isVideoCodec)(codec);
- });
- }
-
- if (codecs.length === 0) {
- codecs = ['avc1.4d400d', 'mp4a.40.2'];
- }
-
- buffer = new _virtualSourceBuffer2['default'](this, codecs);
-
- if (this.sourceBuffers.length !== 0) {
- // If another VirtualSourceBuffer already exists, then we are creating a
- // SourceBuffer for an alternate audio track and therefore we know that
- // the source has both an audio and video track.
- // That means we should trigger the manual creation of the real
- // SourceBuffers instead of waiting for the transmuxer to return data
- this.sourceBuffers[0].createRealSourceBuffers_();
- buffer.createRealSourceBuffers_();
-
- // Automatically disable the audio on the first source buffer if
- // a second source buffer is ever created
- this.sourceBuffers[0].audioDisabled_ = true;
- }
- } else {
- // delegate to the native implementation
- buffer = this.nativeMediaSource_.addSourceBuffer(type);
- }
-
- this.sourceBuffers.push(buffer);
- return buffer;
- }
- }]);
-
- return HtmlMediaSource;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = HtmlMediaSource;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./add-text-track-data":62,"./cleanup-text-tracks":63,"./codec-utils":64,"./virtual-source-buffer":74,"global/document":29,"global/window":30}],71:[function(require,module,exports){
- /**
- * @file remove-cues-from-track.js
- */
-
- /**
- * 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
- */
- "use strict";
-
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- var removeCuesFromTrack = function removeCuesFromTrack(start, end, track) {
- var i = undefined;
- var cue = undefined;
-
- if (!track) {
- return;
- }
-
- if (!track.cues) {
- return;
- }
-
- i = track.cues.length;
-
- while (i--) {
- cue = track.cues[i];
-
- // Remove any overlapping cue
- if (cue.startTime <= end && cue.endTime >= start) {
- track.removeCue(cue);
- }
- }
- };
-
- exports["default"] = removeCuesFromTrack;
- module.exports = exports["default"];
- },{}],72:[function(require,module,exports){
- /**
- * @file transmuxer-worker.js
- */
-
- /**
- * videojs-contrib-media-sources
- *
- * Copyright (c) 2015 Brightcove
- * All rights reserved.
- *
- * Handles communication between the browser-world and the mux.js
- * transmuxer running inside of a WebWorker by exposing a simple
- * message-based interface to a Transmuxer object.
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _muxJsLibMp4 = require('mux.js/lib/mp4');
-
- var _muxJsLibMp42 = _interopRequireDefault(_muxJsLibMp4);
-
- /**
- * 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
- */
- var wireTransmuxerEvents = function wireTransmuxerEvents(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)
- var initArray = segment.initSegment;
-
- segment.initSegment = {
- data: initArray.buffer,
- byteOffset: initArray.byteOffset,
- byteLength: initArray.byteLength
- };
-
- var typedArray = segment.data;
-
- segment.data = typedArray.buffer;
- _globalWindow2['default'].postMessage({
- action: 'data',
- segment: segment,
- byteOffset: typedArray.byteOffset,
- byteLength: typedArray.byteLength
- }, [segment.data]);
- });
-
- if (transmuxer.captionStream) {
- transmuxer.captionStream.on('data', function (caption) {
- _globalWindow2['default'].postMessage({
- action: 'caption',
- data: caption
- });
- });
- }
-
- transmuxer.on('done', function (data) {
- _globalWindow2['default'].postMessage({ action: 'done' });
- });
- };
-
- /**
- * 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
- */
-
- var MessageHandlers = (function () {
- function MessageHandlers(options) {
- _classCallCheck(this, MessageHandlers);
-
- this.options = options || {};
- this.init();
- }
-
- /**
- * Our web wroker 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
- */
-
- /**
- * initialize our web worker and wire all the events.
- */
-
- _createClass(MessageHandlers, [{
- key: 'init',
- value: function init() {
- if (this.transmuxer) {
- this.transmuxer.dispose();
- }
- this.transmuxer = new _muxJsLibMp42['default'].Transmuxer(this.options);
- wireTransmuxerEvents(this.transmuxer);
- }
-
- /**
- * Adds data (a ts segment) to the start of the transmuxer pipeline for
- * processing.
- *
- * @param {ArrayBuffer} data data to push into the muxer
- */
- }, {
- key: 'push',
- value: function push(data) {
- // Cast array buffer to correct type for transmuxer
- var 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.
- */
- }, {
- key: 'reset',
- value: function reset() {
- this.init();
- }
-
- /**
- * 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
- */
- }, {
- key: 'setTimestampOffset',
- value: function setTimestampOffset(data) {
- var timestampOffset = data.timestampOffset || 0;
-
- this.transmuxer.setBaseMediaDecodeTime(Math.round(timestampOffset * 90000));
- }
- }, {
- key: 'setAudioAppendStart',
- value: function setAudioAppendStart(data) {
- this.transmuxer.setAudioAppendStart(Math.ceil(data.appendStart * 90000));
- }
-
- /**
- * Forces the pipeline to finish processing the last segment and emit it's
- * results.
- *
- * @param {Object} data event data, not really used
- */
- }, {
- key: 'flush',
- value: function flush(data) {
- this.transmuxer.flush();
- }
- }]);
-
- return MessageHandlers;
- })();
-
- var TransmuxerWorker = function TransmuxerWorker(self) {
- self.onmessage = function (event) {
- if (event.data.action === 'init' && event.data.options) {
- this.messageHandlers = new MessageHandlers(event.data.options);
- return;
- }
-
- if (!this.messageHandlers) {
- this.messageHandlers = new MessageHandlers();
- }
-
- if (event.data && event.data.action && event.data.action !== 'init') {
- if (this.messageHandlers[event.data.action]) {
- this.messageHandlers[event.data.action](event.data);
- }
- }
- };
- };
-
- exports['default'] = function (self) {
- return new TransmuxerWorker(self);
- };
-
- module.exports = exports['default'];
- },{"global/window":30,"mux.js/lib/mp4":53}],73:[function(require,module,exports){
- (function (global){
- /**
- * @file videojs-contrib-media-sources.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _flashMediaSource = require('./flash-media-source');
-
- var _flashMediaSource2 = _interopRequireDefault(_flashMediaSource);
-
- var _htmlMediaSource = require('./html-media-source');
-
- var _htmlMediaSource2 = _interopRequireDefault(_htmlMediaSource);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var urlCount = 0;
-
- // ------------
- // Media Source
- // ------------
-
- var defaults = {
- // how to determine the MediaSource implementation to use. There
- // are three available modes:
- // - auto: use native MediaSources where available and Flash
- // everywhere else
- // - html5: always use native MediaSources
- // - flash: always use the Flash MediaSource polyfill
- mode: 'auto'
- };
-
- // store references to the media sources so they can be connected
- // to a video element (a swf object)
- // TODO: can we store this somewhere local to this module?
- _videoJs2['default'].mediaSources = {};
-
- /**
- * Provide a method for a swf object to notify JS that a
- * media source is now open.
- *
- * @param {String} msObjectURL string referencing the MSE Object URL
- * @param {String} swfId the swf id
- */
- var open = function open(msObjectURL, swfId) {
- var mediaSource = _videoJs2['default'].mediaSources[msObjectURL];
-
- if (mediaSource) {
- mediaSource.trigger({ type: 'sourceopen', swfId: swfId });
- } else {
- throw new Error('Media Source not found (Video.js)');
- }
- };
-
- /**
- * 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
- */
- var supportsNativeMediaSources = function supportsNativeMediaSources() {
- return !!_globalWindow2['default'].MediaSource && !!_globalWindow2['default'].MediaSource.isTypeSupported && _globalWindow2['default'].MediaSource.isTypeSupported('video/mp4;codecs="avc1.4d400d,mp4a.40.2"');
- };
-
- /**
- * An emulation of the MediaSource API so that we can support
- * native and non-native functionality such as flash and
- * video/mp2t videos. returns an instance of HtmlMediaSource or
- * FlashMediaSource depending on what is supported and what options
- * are passed in.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/MediaSource
- * @param {Object} options options to use during setup.
- */
- var MediaSource = function MediaSource(options) {
- var settings = _videoJs2['default'].mergeOptions(defaults, options);
-
- this.MediaSource = {
- open: open,
- supportsNativeMediaSources: supportsNativeMediaSources
- };
-
- // determine whether HTML MediaSources should be used
- if (settings.mode === 'html5' || settings.mode === 'auto' && supportsNativeMediaSources()) {
- return new _htmlMediaSource2['default']();
- } else if (_videoJs2['default'].getTech('Flash')) {
- return new _flashMediaSource2['default']();
- }
-
- throw new Error('Cannot use Flash or Html5 to create a MediaSource for this video');
- };
-
- exports.MediaSource = MediaSource;
- MediaSource.open = open;
- MediaSource.supportsNativeMediaSources = supportsNativeMediaSources;
-
- /**
- * A wrapper around the native URL for our MSE object
- * implementation, this object is exposed under videojs.URL
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/URL
- */
- var URL = {
- /**
- * A wrapper around the native createObjectURL for our objects.
- * This function maps a native or emulated mediaSource to a blob
- * url so that it can be loaded into video.js
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/URL/createObjectURL
- * @param {MediaSource} object the object to create a blob url to
- */
- createObjectURL: function createObjectURL(object) {
- var objectUrlPrefix = 'blob:vjs-media-source/';
- var url = undefined;
-
- // use the native MediaSource to generate an object URL
- if (object instanceof _htmlMediaSource2['default']) {
- url = _globalWindow2['default'].URL.createObjectURL(object.nativeMediaSource_);
- object.url_ = url;
- return url;
- }
- // if the object isn't an emulated MediaSource, delegate to the
- // native implementation
- if (!(object instanceof _flashMediaSource2['default'])) {
- url = _globalWindow2['default'].URL.createObjectURL(object);
- object.url_ = url;
- return url;
- }
-
- // build a URL that can be used to map back to the emulated
- // MediaSource
- url = objectUrlPrefix + urlCount;
-
- urlCount++;
-
- // setup the mapping back to object
- _videoJs2['default'].mediaSources[url] = object;
-
- return url;
- }
- };
-
- exports.URL = URL;
- _videoJs2['default'].MediaSource = MediaSource;
- _videoJs2['default'].URL = URL;
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./flash-media-source":67,"./html-media-source":70,"global/window":30}],74:[function(require,module,exports){
- (function (global){
- /**
- * @file virtual-source-buffer.js
- */
- 'use strict';
-
- Object.defineProperty(exports, '__esModule', {
- value: true
- });
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _createTextTracksIfNecessary = require('./create-text-tracks-if-necessary');
-
- var _createTextTracksIfNecessary2 = _interopRequireDefault(_createTextTracksIfNecessary);
-
- var _removeCuesFromTrack = require('./remove-cues-from-track');
-
- var _removeCuesFromTrack2 = _interopRequireDefault(_removeCuesFromTrack);
-
- var _addTextTrackData = require('./add-text-track-data');
-
- var _webworkify = require('webworkify');
-
- var _webworkify2 = _interopRequireDefault(_webworkify);
-
- var _transmuxerWorker = require('./transmuxer-worker');
-
- var _transmuxerWorker2 = _interopRequireDefault(_transmuxerWorker);
-
- var _codecUtils = require('./codec-utils');
-
- /**
- * VirtualSourceBuffers exist so that we can transmux non native formats
- * into a native format, but keep the same api as a native source buffer.
- * It creates a transmuxer, that works in its own thread (a web worker) and
- * that transmuxer muxes the data into a native format. VirtualSourceBuffer will
- * then send all of that data to the naive sourcebuffer so that it is
- * indestinguishable from a natively supported format.
- *
- * @param {HtmlMediaSource} mediaSource the parent mediaSource
- * @param {Array} codecs array of codecs that we will be dealing with
- * @class VirtualSourceBuffer
- * @extends video.js.EventTarget
- */
-
- var VirtualSourceBuffer = (function (_videojs$EventTarget) {
- _inherits(VirtualSourceBuffer, _videojs$EventTarget);
-
- function VirtualSourceBuffer(mediaSource, codecs) {
- var _this = this;
-
- _classCallCheck(this, VirtualSourceBuffer);
-
- _get(Object.getPrototypeOf(VirtualSourceBuffer.prototype), 'constructor', this).call(this, _videoJs2['default'].EventTarget);
- this.timestampOffset_ = 0;
- this.pendingBuffers_ = [];
- this.bufferUpdating_ = false;
- this.mediaSource_ = mediaSource;
- this.codecs_ = codecs;
- this.audioCodec_ = null;
- this.videoCodec_ = null;
- this.audioDisabled_ = false;
- this.appendAudioInitSegment_ = true;
-
- var options = {
- remux: false
- };
-
- this.codecs_.forEach(function (codec) {
- if ((0, _codecUtils.isAudioCodec)(codec)) {
- _this.audioCodec_ = codec;
- } else if ((0, _codecUtils.isVideoCodec)(codec)) {
- _this.videoCodec_ = codec;
- }
- });
-
- // append muxed segments to their respective native buffers as
- // soon as they are available
- this.transmuxer_ = (0, _webworkify2['default'])(_transmuxerWorker2['default']);
- this.transmuxer_.postMessage({ action: 'init', options: options });
-
- this.transmuxer_.onmessage = function (event) {
- if (event.data.action === 'data') {
- return _this.data_(event);
- }
-
- if (event.data.action === 'done') {
- return _this.done_(event);
- }
- };
-
- // this timestampOffset is a property with the side-effect of resetting
- // baseMediaDecodeTime in the transmuxer on the setter
- Object.defineProperty(this, 'timestampOffset', {
- get: function get() {
- return this.timestampOffset_;
- },
- set: function set(val) {
- if (typeof val === 'number' && val >= 0) {
- this.timestampOffset_ = val;
- this.appendAudioInitSegment_ = true;
-
- // We have to tell the transmuxer to set the baseMediaDecodeTime to
- // the desired timestampOffset for the next segment
- this.transmuxer_.postMessage({
- action: 'setTimestampOffset',
- timestampOffset: val
- });
- }
- }
- });
-
- // setting the append window affects both source buffers
- Object.defineProperty(this, 'appendWindowStart', {
- get: function get() {
- return (this.videoBuffer_ || this.audioBuffer_).appendWindowStart;
- },
- set: function set(start) {
- if (this.videoBuffer_) {
- this.videoBuffer_.appendWindowStart = start;
- }
- if (this.audioBuffer_) {
- this.audioBuffer_.appendWindowStart = start;
- }
- }
- });
-
- // this buffer is "updating" if either of its native buffers are
- Object.defineProperty(this, 'updating', {
- get: function get() {
- return !!(this.bufferUpdating_ || !this.audioDisabled_ && this.audioBuffer_ && this.audioBuffer_.updating || this.videoBuffer_ && this.videoBuffer_.updating);
- }
- });
-
- // the buffered property is the intersection of the buffered
- // ranges of the native source buffers
- Object.defineProperty(this, 'buffered', {
- get: function get() {
- var start = null;
- var end = null;
- var arity = 0;
- var extents = [];
- var ranges = [];
-
- // neither buffer has been created yet
- if (!this.videoBuffer_ && !this.audioBuffer_) {
- return _videoJs2['default'].createTimeRange();
- }
-
- // only one buffer is configured
- if (!this.videoBuffer_) {
- return this.audioBuffer_.buffered;
- }
- if (!this.audioBuffer_) {
- return this.videoBuffer_.buffered;
- }
-
- // both buffers are configured
- if (this.audioDisabled_) {
- return this.videoBuffer_.buffered;
- }
-
- // both buffers are empty
- if (this.videoBuffer_.buffered.length === 0 && this.audioBuffer_.buffered.length === 0) {
- return _videoJs2['default'].createTimeRange();
- }
-
- // Handle the case where we have both buffers and create an
- // intersection of the two
- var videoBuffered = this.videoBuffer_.buffered;
- var audioBuffered = this.audioBuffer_.buffered;
- var count = videoBuffered.length;
-
- // A) Gather up all start and end times
- while (count--) {
- extents.push({ time: videoBuffered.start(count), type: 'start' });
- extents.push({ time: videoBuffered.end(count), type: 'end' });
- }
- count = audioBuffered.length;
- while (count--) {
- extents.push({ time: audioBuffered.start(count), type: 'start' });
- extents.push({ time: audioBuffered.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 _videoJs2['default'].createTimeRanges(ranges);
- }
- });
- }
-
- /**
- * When we get a data event from the transmuxer
- * we call this function and handle the data that
- * was sent to us
- *
- * @private
- * @param {Event} event the data event from the transmuxer
- */
-
- _createClass(VirtualSourceBuffer, [{
- key: 'data_',
- value: function data_(event) {
- var segment = event.data.segment;
-
- // Cast ArrayBuffer to TypedArray
- segment.data = new Uint8Array(segment.data, event.data.byteOffset, event.data.byteLength);
-
- segment.initSegment = new Uint8Array(segment.initSegment.data, segment.initSegment.byteOffset, segment.initSegment.byteLength);
-
- (0, _createTextTracksIfNecessary2['default'])(this, this.mediaSource_, segment);
-
- // Add the segments to the pendingBuffers array
- this.pendingBuffers_.push(segment);
- return;
- }
-
- /**
- * When we get a done event from the transmuxer
- * we call this function and we process all
- * of the pending data that we have been saving in the
- * data_ function
- *
- * @private
- * @param {Event} event the done event from the transmuxer
- */
- }, {
- key: 'done_',
- value: function done_(event) {
- // All buffers should have been flushed from the muxer
- // start processing anything we have received
- this.processPendingSegments_();
- return;
- }
-
- /**
- * Create our internal native audio/video source buffers and add
- * event handlers to them with the following conditions:
- * 1. they do not already exist on the mediaSource
- * 2. this VSB has a codec for them
- *
- * @private
- */
- }, {
- key: 'createRealSourceBuffers_',
- value: function createRealSourceBuffers_() {
- var _this2 = this;
-
- var types = ['audio', 'video'];
-
- types.forEach(function (type) {
- // Don't create a SourceBuffer of this type if we don't have a
- // codec for it
- if (!_this2[type + 'Codec_']) {
- return;
- }
-
- // Do nothing if a SourceBuffer of this type already exists
- if (_this2[type + 'Buffer_']) {
- return;
- }
-
- var buffer = null;
-
- // If the mediasource already has a SourceBuffer for the codec
- // use that
- if (_this2.mediaSource_[type + 'Buffer_']) {
- buffer = _this2.mediaSource_[type + 'Buffer_'];
- } else {
- buffer = _this2.mediaSource_.nativeMediaSource_.addSourceBuffer(type + '/mp4;codecs="' + _this2[type + 'Codec_'] + '"');
- _this2.mediaSource_[type + 'Buffer_'] = buffer;
- }
-
- _this2[type + 'Buffer_'] = buffer;
-
- // Wire up the events to the SourceBuffer
- ['update', 'updatestart', 'updateend'].forEach(function (event) {
- buffer.addEventListener(event, function () {
- // if audio is disabled
- if (type === 'audio' && _this2.audioDisabled_) {
- return;
- }
-
- var shouldTrigger = types.every(function (t) {
- // skip checking audio's updating status if audio
- // is not enabled
- if (t === 'audio' && _this2.audioDisabled_) {
- return true;
- }
- // if the other type if updating we don't trigger
- if (type !== t && _this2[t + 'Buffer_'] && _this2[t + 'Buffer_'].updating) {
- return false;
- }
- return true;
- });
-
- if (shouldTrigger) {
- return _this2.trigger(event);
- }
- });
- });
- });
- }
-
- /**
- * Emulate the native mediasource function, but our function will
- * send all of the proposed segments to the transmuxer so that we
- * can transmux them before we append them to our internal
- * native source buffers in the correct format.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/appendBuffer
- * @param {Uint8Array} segment the segment to append to the buffer
- */
- }, {
- key: 'appendBuffer',
- value: function appendBuffer(segment) {
- // Start the internal "updating" state
- this.bufferUpdating_ = true;
-
- if (this.audioBuffer_ && this.audioBuffer_.buffered.length) {
- var audioBuffered = this.audioBuffer_.buffered;
-
- this.transmuxer_.postMessage({
- action: 'setAudioAppendStart',
- appendStart: audioBuffered.end(audioBuffered.length - 1)
- });
- }
-
- this.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: segment.buffer,
-
- // To recreate the original typed-array, we need information
- // about what portion of the ArrayBuffer it was a view into
- byteOffset: segment.byteOffset,
- byteLength: segment.byteLength
- }, [segment.buffer]);
- this.transmuxer_.postMessage({ action: 'flush' });
- }
-
- /**
- * Emulate the native mediasource function and remove parts
- * of the buffer from any of our internal buffers that exist
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/remove
- * @param {Double} start position to start the remove at
- * @param {Double} end position to end the remove at
- */
- }, {
- key: 'remove',
- value: function remove(start, end) {
- if (this.videoBuffer_) {
- this.videoBuffer_.remove(start, end);
- }
- if (this.audioBuffer_) {
- this.audioBuffer_.remove(start, end);
- }
-
- // Remove Metadata Cues (id3)
- (0, _removeCuesFromTrack2['default'])(start, end, this.metadataTrack_);
-
- // Remove Any Captions
- (0, _removeCuesFromTrack2['default'])(start, end, this.inbandTextTrack_);
- }
-
- /**
- * Process any segments that the muxer has output
- * Concatenate segments together based on type and append them into
- * their respective sourceBuffers
- *
- * @private
- */
- }, {
- key: 'processPendingSegments_',
- value: function processPendingSegments_() {
- var sortedSegments = {
- video: {
- segments: [],
- bytes: 0
- },
- audio: {
- segments: [],
- bytes: 0
- },
- captions: [],
- metadata: []
- };
-
- // Sort segments into separate video/audio arrays and
- // keep track of their total byte lengths
- sortedSegments = this.pendingBuffers_.reduce(function (segmentObj, segment) {
- var type = segment.type;
- var data = segment.data;
- var initSegment = segment.initSegment;
-
- segmentObj[type].segments.push(data);
- segmentObj[type].bytes += data.byteLength;
-
- segmentObj[type].initSegment = initSegment;
-
- // Gather any captions into a single array
- if (segment.captions) {
- segmentObj.captions = segmentObj.captions.concat(segment.captions);
- }
-
- if (segment.info) {
- segmentObj[type].info = segment.info;
- }
-
- // Gather any metadata into a single array
- if (segment.metadata) {
- segmentObj.metadata = segmentObj.metadata.concat(segment.metadata);
- }
-
- return segmentObj;
- }, sortedSegments);
-
- // Create the real source buffers if they don't exist by now since we
- // finally are sure what tracks are contained in the source
- if (!this.videoBuffer_ && !this.audioBuffer_) {
- // Remove any codecs that may have been specified by default but
- // are no longer applicable now
- if (sortedSegments.video.bytes === 0) {
- this.videoCodec_ = null;
- }
- if (sortedSegments.audio.bytes === 0) {
- this.audioCodec_ = null;
- }
-
- this.createRealSourceBuffers_();
- }
-
- if (sortedSegments.audio.info) {
- this.mediaSource_.trigger({ type: 'audioinfo', info: sortedSegments.audio.info });
- }
- if (sortedSegments.video.info) {
- this.mediaSource_.trigger({ type: 'videoinfo', info: sortedSegments.video.info });
- }
-
- if (this.appendAudioInitSegment_) {
- if (!this.audioDisabled_ && this.audioBuffer_) {
- sortedSegments.audio.segments.unshift(sortedSegments.audio.initSegment);
- sortedSegments.audio.bytes += sortedSegments.audio.initSegment.byteLength;
- }
- this.appendAudioInitSegment_ = false;
- }
-
- // Merge multiple video and audio segments into one and append
- if (this.videoBuffer_) {
- sortedSegments.video.segments.unshift(sortedSegments.video.initSegment);
- sortedSegments.video.bytes += sortedSegments.video.initSegment.byteLength;
- this.concatAndAppendSegments_(sortedSegments.video, this.videoBuffer_);
- // TODO: are video tracks the only ones with text tracks?
- (0, _addTextTrackData.addTextTrackData)(this, sortedSegments.captions, sortedSegments.metadata);
- }
- if (!this.audioDisabled_ && this.audioBuffer_) {
- this.concatAndAppendSegments_(sortedSegments.audio, this.audioBuffer_);
- }
-
- this.pendingBuffers_.length = 0;
-
- // We are no longer in the internal "updating" state
- this.bufferUpdating_ = false;
- }
-
- /**
- * Combine all segments into a single Uint8Array and then append them
- * to the destination buffer
- *
- * @param {Object} segmentObj
- * @param {SourceBuffer} destinationBuffer native source buffer to append data to
- * @private
- */
- }, {
- key: 'concatAndAppendSegments_',
- value: function concatAndAppendSegments_(segmentObj, destinationBuffer) {
- var offset = 0;
- var tempBuffer = undefined;
-
- if (segmentObj.bytes) {
- tempBuffer = new Uint8Array(segmentObj.bytes);
-
- // Combine the individual segments into one large typed-array
- segmentObj.segments.forEach(function (segment) {
- tempBuffer.set(segment, offset);
- offset += segment.byteLength;
- });
-
- try {
- destinationBuffer.appendBuffer(tempBuffer);
- } catch (error) {
- if (this.mediaSource_.player_) {
- this.mediaSource_.player_.error({
- code: -3,
- type: 'APPEND_BUFFER_ERR',
- message: error.message,
- originalError: error
- });
- }
- }
- }
- }
-
- /**
- * Emulate the native mediasource function. abort any soureBuffer
- * actions and throw out any un-appended data.
- *
- * @link https://developer.mozilla.org/en-US/docs/Web/API/SourceBuffer/abort
- */
- }, {
- key: 'abort',
- value: function abort() {
- if (this.videoBuffer_) {
- this.videoBuffer_.abort();
- }
- if (this.audioBuffer_) {
- this.audioBuffer_.abort();
- }
- if (this.transmuxer_) {
- this.transmuxer_.postMessage({ action: 'reset' });
- }
- this.pendingBuffers_.length = 0;
- this.bufferUpdating_ = false;
- }
- }]);
-
- return VirtualSourceBuffer;
- })(_videoJs2['default'].EventTarget);
-
- exports['default'] = VirtualSourceBuffer;
- module.exports = exports['default'];
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./add-text-track-data":62,"./codec-utils":64,"./create-text-tracks-if-necessary":65,"./remove-cues-from-track":71,"./transmuxer-worker":72,"webworkify":75}],75:[function(require,module,exports){
- var bundleFn = arguments[3];
- var sources = arguments[4];
- var cache = arguments[5];
-
- var stringify = JSON.stringify;
-
- module.exports = function (fn) {
- var keys = [];
- var wkey;
- var cacheKeys = Object.keys(cache);
-
- for (var i = 0, l = cacheKeys.length; i < l; i++) {
- var key = cacheKeys[i];
- if (cache[key].exports === fn) {
- wkey = key;
- break;
- }
- }
-
- if (!wkey) {
- wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
- var wcache = {};
- for (var i = 0, l = cacheKeys.length; i < l; i++) {
- var key = cacheKeys[i];
- wcache[key] = key;
- }
- sources[wkey] = [
- Function(['require','module','exports'], '(' + fn + ')(self)'),
- wcache
- ];
- }
- var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
-
- var scache = {}; scache[wkey] = wkey;
- sources[skey] = [
- Function(['require'],'require(' + stringify(wkey) + ')(self)'),
- scache
- ];
-
- var src = '(' + bundleFn + ')({'
- + Object.keys(sources).map(function (key) {
- return stringify(key) + ':['
- + sources[key][0]
- + ',' + stringify(sources[key][1]) + ']'
- ;
- }).join(',')
- + '},{},[' + stringify(skey) + '])'
- ;
-
- var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
-
- return new Worker(URL.createObjectURL(
- new Blob([src], { type: 'text/javascript' })
- ));
- };
-
- },{}],76:[function(require,module,exports){
- (function (global){
- /**
- * @file videojs-contrib-hls.js
- *
- * The main file for the HLS project.
- * License: https://github.com/videojs/videojs-contrib-hls/blob/master/LICENSE
- */
- 'use strict';
-
- var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
-
- var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
-
- function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
-
- function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
-
- function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
-
- var _globalDocument = require('global/document');
-
- var _globalDocument2 = _interopRequireDefault(_globalDocument);
-
- var _playlistLoader = require('./playlist-loader');
-
- var _playlistLoader2 = _interopRequireDefault(_playlistLoader);
-
- var _playlist = require('./playlist');
-
- var _playlist2 = _interopRequireDefault(_playlist);
-
- var _xhr = require('./xhr');
-
- var _xhr2 = _interopRequireDefault(_xhr);
-
- var _aesDecrypter = require('aes-decrypter');
-
- var _binUtils = require('./bin-utils');
-
- var _binUtils2 = _interopRequireDefault(_binUtils);
-
- var _videojsContribMediaSources = require('videojs-contrib-media-sources');
-
- var _m3u8Parser = require('m3u8-parser');
-
- var _m3u8Parser2 = _interopRequireDefault(_m3u8Parser);
-
- var _videoJs = (typeof window !== "undefined" ? window['videojs'] : typeof global !== "undefined" ? global['videojs'] : null);
-
- var _videoJs2 = _interopRequireDefault(_videoJs);
-
- var _masterPlaylistController = require('./master-playlist-controller');
-
- var _config = require('./config');
-
- var _config2 = _interopRequireDefault(_config);
-
- var _renditionMixin = require('./rendition-mixin');
-
- var _renditionMixin2 = _interopRequireDefault(_renditionMixin);
-
- var _globalWindow = require('global/window');
-
- var _globalWindow2 = _interopRequireDefault(_globalWindow);
-
- var _playbackWatcher = require('./playback-watcher');
-
- var _playbackWatcher2 = _interopRequireDefault(_playbackWatcher);
-
- var _reloadSourceOnError = require('./reload-source-on-error');
-
- var _reloadSourceOnError2 = _interopRequireDefault(_reloadSourceOnError);
-
- var Hls = {
- PlaylistLoader: _playlistLoader2['default'],
- Playlist: _playlist2['default'],
- Decrypter: _aesDecrypter.Decrypter,
- AsyncStream: _aesDecrypter.AsyncStream,
- decrypt: _aesDecrypter.decrypt,
- utils: _binUtils2['default'],
- xhr: (0, _xhr2['default'])()
- };
-
- Object.defineProperty(Hls, 'GOAL_BUFFER_LENGTH', {
- get: function get() {
- _videoJs2['default'].log.warn('using Hls.GOAL_BUFFER_LENGTH is UNSAFE be sure ' + 'you know what you are doing');
- return _config2['default'].GOAL_BUFFER_LENGTH;
- },
- set: function set(v) {
- _videoJs2['default'].log.warn('using Hls.GOAL_BUFFER_LENGTH is UNSAFE be sure ' + 'you know what you are doing');
- if (typeof v !== 'number' || v <= 0) {
- _videoJs2['default'].log.warn('value passed to Hls.GOAL_BUFFER_LENGTH ' + 'must be a number and greater than 0');
- return;
- }
- _config2['default'].GOAL_BUFFER_LENGTH = v;
- }
- });
-
- // A fudge factor to apply to advertised playlist bitrates to account for
- // temporary flucations in client bandwidth
- var BANDWIDTH_VARIANCE = 1.2;
-
- /**
- * 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
- */
- var safeGetComputedStyle = function safeGetComputedStyle(el, property) {
- var result = undefined;
-
- if (!el) {
- return '';
- }
-
- result = _globalWindow2['default'].getComputedStyle(el);
- if (!result) {
- return '';
- }
-
- return result[property];
- };
-
- /**
- * Updates the selectedIndex of the QualityLevelList when a mediachange happens in hls.
- *
- * @param {QualityLevelList} qualityLevels The QualityLevelList to update.
- * @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.
- * @function handleHlsMediaChange
- */
- var handleHlsMediaChange = function handleHlsMediaChange(qualityLevels, playlistLoader) {
- var newPlaylist = playlistLoader.media();
- var selectedIndex = -1;
-
- for (var i = 0; i < qualityLevels.length; i++) {
- if (qualityLevels[i].id === newPlaylist.uri) {
- selectedIndex = i;
- break;
- }
- }
-
- qualityLevels.selectedIndex_ = selectedIndex;
- qualityLevels.trigger({
- selectedIndex: selectedIndex,
- type: 'change'
- });
- };
-
- /**
- * Adds quality levels to list once playlist metadata is available
- *
- * @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.
- * @param {Object} hls Hls object to listen to for media events.
- * @function handleHlsLoadedMetadata
- */
- var handleHlsLoadedMetadata = function handleHlsLoadedMetadata(qualityLevels, hls) {
- hls.representations().forEach(function (rep) {
- qualityLevels.addQualityLevel(rep);
- });
- handleHlsMediaChange(qualityLevels, hls.playlists);
- };
-
- /**
- * Resuable stable sort function
- *
- * @param {Playlists} array
- * @param {Function} sortFn Different comparators
- * @function stableSort
- */
- var stableSort = function stableSort(array, sortFn) {
- var newArray = array.slice();
-
- array.sort(function (left, right) {
- var cmp = sortFn(left, right);
-
- if (cmp === 0) {
- return newArray.indexOf(left) - newArray.indexOf(right);
- }
- return cmp;
- });
- };
-
- /**
- * Chooses the appropriate media playlist based on the current
- * bandwidth estimate and the player size.
- *
- * @return {Playlist} the highest bitrate playlist less than the currently detected
- * bandwidth, accounting for some amount of bandwidth variance
- */
- Hls.STANDARD_PLAYLIST_SELECTOR = function () {
- var sortedPlaylists = this.playlists.master.playlists.slice();
- var bandwidthPlaylists = [];
- var bandwidthBestVariant = undefined;
- var resolutionPlusOne = undefined;
- var resolutionBestVariant = undefined;
- var width = undefined;
- var height = undefined;
- var systemBandwidth = undefined;
- var haveResolution = undefined;
- var resolutionPlusOneList = [];
- var resolutionPlusOneSmallest = [];
- var resolutionBestVariantList = [];
-
- stableSort(sortedPlaylists, Hls.comparePlaylistBandwidth);
-
- // filter out any playlists that have been excluded due to
- // incompatible configurations or playback errors
- sortedPlaylists = sortedPlaylists.filter(_playlist2['default'].isEnabled);
- // filter out any variant that has greater effective bitrate
- // than the current estimated bandwidth
- systemBandwidth = this.systemBandwidth;
- bandwidthPlaylists = sortedPlaylists.filter(function (elem) {
- return elem.attributes && elem.attributes.BANDWIDTH && elem.attributes.BANDWIDTH * BANDWIDTH_VARIANCE < systemBandwidth;
- });
-
- // get all of the renditions with the same (highest) bandwidth
- // and then taking the very first element
- bandwidthBestVariant = bandwidthPlaylists.filter(function (elem) {
- return elem.attributes.BANDWIDTH === bandwidthPlaylists[bandwidthPlaylists.length - 1].attributes.BANDWIDTH;
- })[0];
-
- // sort variants by resolution
- stableSort(bandwidthPlaylists, Hls.comparePlaylistResolution);
-
- width = parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10);
- height = parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10);
-
- // filter out playlists without resolution information
- haveResolution = bandwidthPlaylists.filter(function (elem) {
- return elem.attributes && elem.attributes.RESOLUTION && elem.attributes.RESOLUTION.width && elem.attributes.RESOLUTION.height;
- });
-
- // if we have the exact resolution as the player use it
- resolutionBestVariantList = haveResolution.filter(function (elem) {
- return elem.attributes.RESOLUTION.width === width && elem.attributes.RESOLUTION.height === height;
- });
- // ensure that we pick the highest bandwidth variant that have exact resolution
- resolutionBestVariant = resolutionBestVariantList.filter(function (elem) {
- return elem.attributes.BANDWIDTH === resolutionBestVariantList[resolutionBestVariantList.length - 1].attributes.BANDWIDTH;
- })[0];
-
- // find the smallest variant that is larger than the player
- // if there is no match of exact resolution
- if (!resolutionBestVariant) {
- resolutionPlusOneList = haveResolution.filter(function (elem) {
- return elem.attributes.RESOLUTION.width > width || elem.attributes.RESOLUTION.height > height;
- });
- // find all the variants have the same smallest resolution
- resolutionPlusOneSmallest = resolutionPlusOneList.filter(function (elem) {
- return elem.attributes.RESOLUTION.width === resolutionPlusOneList[0].attributes.RESOLUTION.width && elem.attributes.RESOLUTION.height === resolutionPlusOneList[0].attributes.RESOLUTION.height;
- });
- // ensure that we also pick the highest bandwidth variant that
- // is just-larger-than the video player
- resolutionPlusOne = resolutionPlusOneSmallest.filter(function (elem) {
- return elem.attributes.BANDWIDTH === resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1].attributes.BANDWIDTH;
- })[0];
- }
-
- // fallback chain of variants
- return resolutionPlusOne || resolutionBestVariant || bandwidthBestVariant || sortedPlaylists[0];
- };
-
- // HLS is a source handler, not a tech. Make sure attempts to use it
- // as one do not cause exceptions.
- Hls.canPlaySource = function () {
- return _videoJs2['default'].log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
- };
-
- /**
- * Whether the browser has built-in HLS support.
- */
- Hls.supportsNativeHls = (function () {
- var video = _globalDocument2['default'].createElement('video');
-
- // native HLS is definitely not supported if HTML5 video isn't
- if (!_videoJs2['default'].getTech('Html5').isSupported()) {
- return false;
- }
-
- // HLS manifests can go by many mime-types
- var 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))
- );
- });
- })();
-
- /**
- * HLS is a source handler, not a tech. Make sure attempts to use it
- * as one do not cause exceptions.
- */
- Hls.isSupported = function () {
- return _videoJs2['default'].log.warn('HLS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
- };
-
- var USER_AGENT = _globalWindow2['default'].navigator && _globalWindow2['default'].navigator.userAgent || '';
-
- /**
- * Determines whether the browser supports a change in the audio configuration
- * during playback. Currently only Firefox 48 and below do not support this.
- * window.isSecureContext is a propterty that was added to window in firefox 49,
- * so we can use it to detect Firefox 49+.
- *
- * @return {Boolean} Whether the browser supports audio config change during playback
- */
- Hls.supportsAudioInfoChange_ = function () {
- if (_videoJs2['default'].browser.IS_FIREFOX) {
- var firefoxVersionMap = /Firefox\/([\d.]+)/i.exec(USER_AGENT);
- var version = parseInt(firefoxVersionMap[1], 10);
-
- return version >= 49;
- }
- return true;
- };
-
- var Component = _videoJs2['default'].getComponent('Component');
-
- /**
- * The Hls Handler object, where we orchestrate all of the parts
- * of HLS to interact with video.js
- *
- * @class HlsHandler
- * @extends videojs.Component
- * @param {Object} source the soruce object
- * @param {Tech} tech the parent tech object
- * @param {Object} options optional and required options
- */
-
- var HlsHandler = (function (_Component) {
- _inherits(HlsHandler, _Component);
-
- function HlsHandler(source, tech, options) {
- var _this = this;
-
- _classCallCheck(this, HlsHandler);
-
- _get(Object.getPrototypeOf(HlsHandler.prototype), 'constructor', this).call(this, tech);
-
- // tech.player() is deprecated but setup a reference to HLS for
- // backwards-compatibility
- if (tech.options_ && tech.options_.playerId) {
- var _player = (0, _videoJs2['default'])(tech.options_.playerId);
-
- if (!_player.hasOwnProperty('hls')) {
- Object.defineProperty(_player, 'hls', {
- get: function get() {
- _videoJs2['default'].log.warn('player.hls is deprecated. Use player.tech_.hls instead.');
- return _this;
- }
- });
- }
- }
-
- // overriding native HLS only works if audio tracks have been emulated
- // error early if we're misconfigured:
- if (_videoJs2['default'].options.hls.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {
- throw new Error('Overriding native HLS requires emulated tracks. ' + 'See https://git.io/vMpjB');
- }
-
- this.tech_ = tech;
- this.source_ = source;
- this.stats = {};
- this.ignoreNextSeekingEvent_ = false;
-
- // handle global & Source Handler level options
- this.options_ = _videoJs2['default'].mergeOptions(_videoJs2['default'].options.hls || {}, options.hls);
- this.setOptions_();
-
- // listen for fullscreenchange events for this player so that we
- // can adjust our quality selection quickly
- this.on(_globalDocument2['default'], ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], function (event) {
- var fullscreenElement = _globalDocument2['default'].fullscreenElement || _globalDocument2['default'].webkitFullscreenElement || _globalDocument2['default'].mozFullScreenElement || _globalDocument2['default'].msFullscreenElement;
-
- if (fullscreenElement && fullscreenElement.contains(_this.tech_.el())) {
- _this.masterPlaylistController_.fastQualityChange_();
- }
- });
-
- this.on(this.tech_, 'seeking', function () {
- if (this.ignoreNextSeekingEvent_) {
- this.ignoreNextSeekingEvent_ = false;
- return;
- }
-
- this.setCurrentTime(this.tech_.currentTime());
- });
- this.on(this.tech_, 'error', function () {
- if (this.masterPlaylistController_) {
- this.masterPlaylistController_.pauseLoading();
- }
- });
-
- this.audioTrackChange_ = function () {
- _this.masterPlaylistController_.setupAudio();
- };
-
- this.textTrackChange_ = function () {
- _this.masterPlaylistController_.setupSubtitles();
- };
-
- this.on(this.tech_, 'play', this.play);
- }
-
- /**
- * 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.
- */
-
- _createClass(HlsHandler, [{
- key: 'setOptions_',
- value: function setOptions_() {
- var _this2 = this;
-
- // defaults
- this.options_.withCredentials = this.options_.withCredentials || false;
-
- if (typeof this.options_.blacklistDuration !== 'number') {
- this.options_.blacklistDuration = 5 * 60;
- }
-
- // start playlist selection at a reasonable bandwidth for
- // broadband internet
- // 0.5 MB/s
- if (typeof this.options_.bandwidth !== 'number') {
- this.options_.bandwidth = 4194304;
- }
-
- // grab options passed to player.src
- ['withCredentials', 'bandwidth'].forEach(function (option) {
- if (typeof _this2.source_[option] !== 'undefined') {
- _this2.options_[option] = _this2.source_[option];
- }
- });
-
- this.bandwidth = this.options_.bandwidth;
- }
-
- /**
- * called when player.src gets called, handle a new source
- *
- * @param {Object} src the source object to handle
- */
- }, {
- key: 'src',
- value: function src(_src) {
- var _this3 = this;
-
- // do nothing if the src is falsey
- if (!_src) {
- return;
- }
- this.setOptions_();
- // add master playlist controller options
- this.options_.url = this.source_.src;
- this.options_.tech = this.tech_;
- this.options_.externHls = Hls;
-
- this.masterPlaylistController_ = new _masterPlaylistController.MasterPlaylistController(this.options_);
- this.playbackWatcher_ = new _playbackWatcher2['default'](_videoJs2['default'].mergeOptions(this.options_, {
- seekable: function seekable() {
- return _this3.seekable();
- }
- }));
-
- this.masterPlaylistController_.on('error', function () {
- var player = _videoJs2['default'].players[_this3.tech_.options_.playerId];
-
- player.error(_this3.masterPlaylistController_.error);
- });
-
- // `this` in selectPlaylist should be the HlsHandler for backwards
- // compatibility with < v2
- this.masterPlaylistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : Hls.STANDARD_PLAYLIST_SELECTOR.bind(this);
-
- // re-expose some internal objects for backwards compatibility with < v2
- this.playlists = this.masterPlaylistController_.masterPlaylistLoader_;
- this.mediaSource = this.masterPlaylistController_.mediaSource;
-
- // Proxy assignment of some properties to the master playlist
- // controller. Using a custom property for backwards compatibility
- // with < v2
- Object.defineProperties(this, {
- selectPlaylist: {
- get: function get() {
- return this.masterPlaylistController_.selectPlaylist;
- },
- set: function set(selectPlaylist) {
- this.masterPlaylistController_.selectPlaylist = selectPlaylist.bind(this);
- }
- },
- throughput: {
- get: function get() {
- return this.masterPlaylistController_.mainSegmentLoader_.throughput.rate;
- },
- set: function set(throughput) {
- this.masterPlaylistController_.mainSegmentLoader_.throughput.rate = throughput;
- // By setting `count` to 1 the throughput value becomes the starting value
- // for the cumulative average
- this.masterPlaylistController_.mainSegmentLoader_.throughput.count = 1;
- }
- },
- bandwidth: {
- get: function get() {
- return this.masterPlaylistController_.mainSegmentLoader_.bandwidth;
- },
- set: function set(bandwidth) {
- this.masterPlaylistController_.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.masterPlaylistController_.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: function get() {
- var invBandwidth = 1 / (this.bandwidth || 1);
- var invThroughput = undefined;
-
- if (this.throughput > 0) {
- invThroughput = 1 / this.throughput;
- } else {
- invThroughput = 0;
- }
-
- var systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));
-
- return systemBitrate;
- },
- set: function set() {
- _videoJs2['default'].log.error('The "systemBandwidth" property is read-only');
- }
- }
- });
-
- Object.defineProperties(this.stats, {
- bandwidth: {
- get: function get() {
- return _this3.bandwidth || 0;
- },
- enumerable: true
- },
- mediaRequests: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaRequests_() || 0;
- },
- enumerable: true
- },
- mediaRequestsAborted: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaRequestsAborted_() || 0;
- },
- enumerable: true
- },
- mediaRequestsTimedout: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaRequestsTimedout_() || 0;
- },
- enumerable: true
- },
- mediaRequestsErrored: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaRequestsErrored_() || 0;
- },
- enumerable: true
- },
- mediaTransferDuration: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaTransferDuration_() || 0;
- },
- enumerable: true
- },
- mediaBytesTransferred: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaBytesTransferred_() || 0;
- },
- enumerable: true
- },
- mediaSecondsLoaded: {
- get: function get() {
- return _this3.masterPlaylistController_.mediaSecondsLoaded_() || 0;
- },
- enumerable: true
- }
- });
-
- this.tech_.one('canplay', this.masterPlaylistController_.setupFirstPlay.bind(this.masterPlaylistController_));
-
- this.masterPlaylistController_.on('sourceopen', function () {
- _this3.tech_.audioTracks().addEventListener('change', _this3.audioTrackChange_);
- _this3.tech_.remoteTextTracks().addEventListener('change', _this3.textTrackChange_);
- });
-
- this.masterPlaylistController_.on('selectedinitialmedia', function () {
- // Add the manual rendition mix-in to HlsHandler
- (0, _renditionMixin2['default'])(_this3);
- });
-
- this.masterPlaylistController_.on('audioupdate', function () {
- // clear current audioTracks
- _this3.tech_.clearTracks('audio');
- _this3.masterPlaylistController_.activeAudioGroup().forEach(function (audioTrack) {
- _this3.tech_.audioTracks().addTrack(audioTrack);
- });
- });
-
- // the bandwidth of the primary segment loader is our best
- // estimate of overall bandwidth
- this.on(this.masterPlaylistController_, '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.masterPlaylistController_, 'firstplay', function () {
- this.ignoreNextSeekingEvent_ = true;
- });
-
- this.tech_.ready(function () {
- return _this3.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.tech_.src(_videoJs2['default'].URL.createObjectURL(this.masterPlaylistController_.mediaSource));
- }
-
- /**
- * Initializes the quality levels and sets listeners to update them.
- *
- * @method setupQualityLevels_
- * @private
- */
- }, {
- key: 'setupQualityLevels_',
- value: function setupQualityLevels_() {
- var _this4 = this;
-
- var player = _videoJs2['default'].players[this.tech_.options_.playerId];
-
- if (player && player.qualityLevels) {
- this.qualityLevels_ = player.qualityLevels();
-
- this.masterPlaylistController_.on('selectedinitialmedia', function () {
- handleHlsLoadedMetadata(_this4.qualityLevels_, _this4);
- });
-
- this.playlists.on('mediachange', function () {
- handleHlsMediaChange(_this4.qualityLevels_, _this4.playlists);
- });
- }
- }
-
- /**
- * a helper for grabbing the active audio group from MasterPlaylistController
- *
- * @private
- */
- }, {
- key: 'activeAudioGroup_',
- value: function activeAudioGroup_() {
- return this.masterPlaylistController_.activeAudioGroup();
- }
-
- /**
- * Begin playing the video.
- */
- }, {
- key: 'play',
- value: function play() {
- this.masterPlaylistController_.play();
- }
-
- /**
- * a wrapper around the function in MasterPlaylistController
- */
- }, {
- key: 'setCurrentTime',
- value: function setCurrentTime(currentTime) {
- this.masterPlaylistController_.setCurrentTime(currentTime);
- }
-
- /**
- * a wrapper around the function in MasterPlaylistController
- */
- }, {
- key: 'duration',
- value: function duration() {
- return this.masterPlaylistController_.duration();
- }
-
- /**
- * a wrapper around the function in MasterPlaylistController
- */
- }, {
- key: 'seekable',
- value: function seekable() {
- return this.masterPlaylistController_.seekable();
- }
-
- /**
- * Abort all outstanding work and cleanup.
- */
- }, {
- key: 'dispose',
- value: function dispose() {
- if (this.playbackWatcher_) {
- this.playbackWatcher_.dispose();
- }
- if (this.masterPlaylistController_) {
- this.masterPlaylistController_.dispose();
- }
- if (this.qualityLevels_) {
- this.qualityLevels_.dispose();
- }
- this.tech_.audioTracks().removeEventListener('change', this.audioTrackChange_);
- this.tech_.remoteTextTracks().removeEventListener('change', this.textTrackChange_);
- _get(Object.getPrototypeOf(HlsHandler.prototype), 'dispose', this).call(this);
- }
- }]);
-
- return HlsHandler;
- })(Component);
-
- var HlsSourceHandler = function HlsSourceHandler(mode) {
- return {
- canHandleSource: function canHandleSource(srcObj) {
- // this forces video.js to skip this tech/mode if its not the one we have been
- // overriden to use, by returing that we cannot handle the source.
- if (_videoJs2['default'].options.hls && _videoJs2['default'].options.hls.mode && _videoJs2['default'].options.hls.mode !== mode) {
- return false;
- }
- return HlsSourceHandler.canPlayType(srcObj.type);
- },
- handleSource: function handleSource(source, tech, options) {
- if (mode === 'flash') {
- // We need to trigger this asynchronously to give others the chance
- // to bind to the event when a source is set at player creation
- tech.setTimeout(function () {
- tech.trigger('loadstart');
- }, 1);
- }
-
- var settings = _videoJs2['default'].mergeOptions(options, { hls: { mode: mode } });
-
- tech.hls = new HlsHandler(source, tech, settings);
- tech.hls.xhr = (0, _xhr2['default'])();
-
- tech.hls.src(source.src);
- return tech.hls;
- },
- canPlayType: function canPlayType(type) {
- if (HlsSourceHandler.canPlayType(type)) {
- return 'maybe';
- }
- return '';
- }
- };
- };
-
- /**
- * 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.
- */
- Hls.comparePlaylistBandwidth = function (left, right) {
- var leftBandwidth = undefined;
- var rightBandwidth = undefined;
-
- if (left.attributes && left.attributes.BANDWIDTH) {
- leftBandwidth = left.attributes.BANDWIDTH;
- }
- leftBandwidth = leftBandwidth || _globalWindow2['default'].Number.MAX_VALUE;
- if (right.attributes && right.attributes.BANDWIDTH) {
- rightBandwidth = right.attributes.BANDWIDTH;
- }
- rightBandwidth = rightBandwidth || _globalWindow2['default'].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.
- */
- Hls.comparePlaylistResolution = function (left, right) {
- var leftWidth = undefined;
- var rightWidth = undefined;
-
- if (left.attributes && left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {
- leftWidth = left.attributes.RESOLUTION.width;
- }
-
- leftWidth = leftWidth || _globalWindow2['default'].Number.MAX_VALUE;
-
- if (right.attributes && right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {
- rightWidth = right.attributes.RESOLUTION.width;
- }
-
- rightWidth = rightWidth || _globalWindow2['default'].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;
- };
-
- HlsSourceHandler.canPlayType = function (type) {
- // No support for IE 10 or below
- if (_videoJs2['default'].browser.IE_VERSION && _videoJs2['default'].browser.IE_VERSION <= 10) {
- return false;
- }
-
- var mpegurlRE = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i;
-
- // favor native HLS support if it's available
- if (!_videoJs2['default'].options.hls.overrideNative && Hls.supportsNativeHls) {
- return false;
- }
- return mpegurlRE.test(type);
- };
-
- if (typeof _videoJs2['default'].MediaSource === 'undefined' || typeof _videoJs2['default'].URL === 'undefined') {
- _videoJs2['default'].MediaSource = _videojsContribMediaSources.MediaSource;
- _videoJs2['default'].URL = _videojsContribMediaSources.URL;
- }
-
- var flashTech = _videoJs2['default'].getTech('Flash');
-
- // register source handlers with the appropriate techs
- if (_videojsContribMediaSources.MediaSource.supportsNativeMediaSources()) {
- _videoJs2['default'].getTech('Html5').registerSourceHandler(HlsSourceHandler('html5'), 0);
- }
- if (_globalWindow2['default'].Uint8Array && flashTech) {
- flashTech.registerSourceHandler(HlsSourceHandler('flash'));
- }
-
- _videoJs2['default'].HlsHandler = HlsHandler;
- _videoJs2['default'].HlsSourceHandler = HlsSourceHandler;
- _videoJs2['default'].Hls = Hls;
- if (!_videoJs2['default'].use) {
- _videoJs2['default'].registerComponent('Hls', Hls);
- }
- _videoJs2['default'].m3u8 = _m3u8Parser2['default'];
- _videoJs2['default'].options.hls = _videoJs2['default'].options.hls || {};
-
- if (_videoJs2['default'].registerPlugin) {
- _videoJs2['default'].registerPlugin('reloadSourceOnError', _reloadSourceOnError2['default']);
- } else {
- _videoJs2['default'].plugin('reloadSourceOnError', _reloadSourceOnError2['default']);
- }
-
- module.exports = {
- Hls: Hls,
- HlsHandler: HlsHandler,
- HlsSourceHandler: HlsSourceHandler
- };
- }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
- },{"./bin-utils":2,"./config":3,"./master-playlist-controller":5,"./playback-watcher":7,"./playlist":9,"./playlist-loader":8,"./reload-source-on-error":11,"./rendition-mixin":12,"./xhr":19,"aes-decrypter":23,"global/document":29,"global/window":30,"m3u8-parser":31,"videojs-contrib-media-sources":73}]},{},[76])(76)
- });
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