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| -rw-r--r-- | js/videojs-contrib-hls.js | 18869 |
1 files changed, 18869 insertions, 0 deletions
diff --git a/js/videojs-contrib-hls.js b/js/videojs-contrib-hls.js new file mode 100644 index 00000000..7c9c7c82 --- /dev/null +++ b/js/videojs-contrib-hls.js @@ -0,0 +1,18869 @@ +/** + * 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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