@l5i/dashjs/build/es5/src/dash/DashAdapter.js

A reference client implementation for the playback of MPEG DASH via Javascript and compliant browsers.

/**
 * The copyright in this software is being made available under the BSD License,
 * included below. This software may be subject to other third party and contributor
 * rights, including patent rights, and no such rights are granted under this license.
 *
 * Copyright (c) 2013, Dash Industry Forum.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *  * Redistributions of source code must retain the above copyright notice, this
 *  list of conditions and the following disclaimer.
 *  * 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.
 *  * Neither the name of Dash Industry Forum nor the names of its
 *  contributors may be used to endorse or promote products derived from this software
 *  without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 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 THE 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.
 */'use strict';Object.defineProperty(exports,'__esModule',{value:true});function _interopRequireDefault(obj){return obj && obj.__esModule?obj:{'default':obj};}var _streamingConstantsConstants=require('../streaming/constants/Constants');var _streamingConstantsConstants2=_interopRequireDefault(_streamingConstantsConstants);var _streamingVoRepresentationInfo=require('../streaming/vo/RepresentationInfo');var _streamingVoRepresentationInfo2=_interopRequireDefault(_streamingVoRepresentationInfo);var _streamingVoMediaInfo=require('../streaming/vo/MediaInfo');var _streamingVoMediaInfo2=_interopRequireDefault(_streamingVoMediaInfo);var _streamingVoStreamInfo=require('../streaming/vo/StreamInfo');var _streamingVoStreamInfo2=_interopRequireDefault(_streamingVoStreamInfo);var _streamingVoManifestInfo=require('../streaming/vo/ManifestInfo');var _streamingVoManifestInfo2=_interopRequireDefault(_streamingVoManifestInfo);var _voEvent=require('./vo/Event');var _voEvent2=_interopRequireDefault(_voEvent);var _coreFactoryMaker=require('../core/FactoryMaker');var _coreFactoryMaker2=_interopRequireDefault(_coreFactoryMaker);var _externalsCea608Parser=require('../../externals/cea608-parser');var _externalsCea608Parser2=_interopRequireDefault(_externalsCea608Parser);function DashAdapter(){var instance=undefined,dashManifestModel=undefined,voPeriods=undefined,voAdaptations=undefined;function setup(){reset();}function setConfig(config){if(!config)return;if(config.dashManifestModel){dashManifestModel = config.dashManifestModel;}}function getRepresentationForRepresentationInfo(representationInfo,representationController){return representationController && representationInfo?representationController.getRepresentationForQuality(representationInfo.quality):null;}function getAdaptationForMediaInfo(mediaInfo){if(!mediaInfo || !mediaInfo.streamInfo || mediaInfo.streamInfo.id === undefined || !voAdaptations[mediaInfo.streamInfo.id])return null;return voAdaptations[mediaInfo.streamInfo.id][mediaInfo.index];}function getPeriodForStreamInfo(streamInfo,voPeriodsArray){var ln=voPeriodsArray.length;for(var i=0;i < ln;i++) {var voPeriod=voPeriodsArray[i];if(streamInfo.id === voPeriod.id)return voPeriod;}return null;}function convertRepresentationToRepresentationInfo(voRepresentation){var representationInfo=new _streamingVoRepresentationInfo2['default']();var realAdaptation=voRepresentation.adaptation.period.mpd.manifest.Period_asArray[voRepresentation.adaptation.period.index].AdaptationSet_asArray[voRepresentation.adaptation.index];var realRepresentation=dashManifestModel.getRepresentationFor(voRepresentation.index,realAdaptation);representationInfo.id = voRepresentation.id;representationInfo.quality = voRepresentation.index;representationInfo.bandwidth = dashManifestModel.getBandwidth(realRepresentation);representationInfo.DVRWindow = voRepresentation.segmentAvailabilityRange;representationInfo.fragmentDuration = voRepresentation.segmentDuration || (voRepresentation.segments && voRepresentation.segments.length > 0?voRepresentation.segments[0].duration:NaN);representationInfo.MSETimeOffset = voRepresentation.MSETimeOffset;representationInfo.useCalculatedLiveEdgeTime = voRepresentation.useCalculatedLiveEdgeTime;representationInfo.mediaInfo = convertAdaptationToMediaInfo(voRepresentation.adaptation);return representationInfo;}function convertAdaptationToMediaInfo(adaptation){var mediaInfo=new _streamingVoMediaInfo2['default']();var realAdaptation=adaptation.period.mpd.manifest.Period_asArray[adaptation.period.index].AdaptationSet_asArray[adaptation.index];var viewpoint=undefined;mediaInfo.id = adaptation.id;mediaInfo.index = adaptation.index;mediaInfo.type = adaptation.type;mediaInfo.streamInfo = convertPeriodToStreamInfo(adaptation.period);mediaInfo.representationCount = dashManifestModel.getRepresentationCount(realAdaptation);mediaInfo.lang = dashManifestModel.getLanguageForAdaptation(realAdaptation);viewpoint = dashManifestModel.getViewpointForAdaptation(realAdaptation);mediaInfo.viewpoint = viewpoint?viewpoint.value:undefined;mediaInfo.accessibility = dashManifestModel.getAccessibilityForAdaptation(realAdaptation).map(function(accessibility){var accessibilityValue=accessibility.value;var accessibilityData=accessibilityValue;if(accessibility.schemeIdUri && accessibility.schemeIdUri.search('cea-608') >= 0 && typeof _externalsCea608Parser2['default'] !== 'undefined'){if(accessibilityValue){accessibilityData = 'cea-608:' + accessibilityValue;}else {accessibilityData = 'cea-608';}mediaInfo.embeddedCaptions = true;}return accessibilityData;});mediaInfo.audioChannelConfiguration = dashManifestModel.getAudioChannelConfigurationForAdaptation(realAdaptation).map(function(audioChannelConfiguration){return audioChannelConfiguration.value;});mediaInfo.roles = dashManifestModel.getRolesForAdaptation(realAdaptation).map(function(role){return role.value;});mediaInfo.codec = dashManifestModel.getCodec(realAdaptation);mediaInfo.mimeType = dashManifestModel.getMimeType(realAdaptation);mediaInfo.contentProtection = dashManifestModel.getContentProtectionData(realAdaptation);mediaInfo.bitrateList = dashManifestModel.getBitrateListForAdaptation(realAdaptation);if(mediaInfo.contentProtection){mediaInfo.contentProtection.forEach(function(item){item.KID = dashManifestModel.getKID(item);});}mediaInfo.isText = dashManifestModel.getIsTextTrack(mediaInfo.mimeType);return mediaInfo;}function convertVideoInfoToEmbeddedTextInfo(mediaInfo,channel,lang){mediaInfo.id = channel; // CC1, CC2, CC3, or CC4
mediaInfo.index = 100 + parseInt(channel.substring(2,3));mediaInfo.type = _streamingConstantsConstants2['default'].EMBEDDED_TEXT;mediaInfo.codec = 'cea-608-in-SEI';mediaInfo.isText = true;mediaInfo.isEmbedded = true;mediaInfo.lang = lang;mediaInfo.roles = ['caption'];}function convertVideoInfoToThumbnailInfo(mediaInfo){mediaInfo.type = _streamingConstantsConstants2['default'].IMAGE;}function convertPeriodToStreamInfo(period){var streamInfo=new _streamingVoStreamInfo2['default']();var THRESHOLD=1;streamInfo.id = period.id;streamInfo.index = period.index;streamInfo.start = period.start;streamInfo.duration = period.duration;streamInfo.manifestInfo = convertMpdToManifestInfo(period.mpd);streamInfo.isLast = period.mpd.manifest.Period_asArray.length === 1 || Math.abs(streamInfo.start + streamInfo.duration - streamInfo.manifestInfo.duration) < THRESHOLD;return streamInfo;}function convertMpdToManifestInfo(mpd){var manifestInfo=new _streamingVoManifestInfo2['default']();manifestInfo.DVRWindowSize = mpd.timeShiftBufferDepth;manifestInfo.loadedTime = mpd.manifest.loadedTime;manifestInfo.availableFrom = mpd.availabilityStartTime;manifestInfo.minBufferTime = mpd.manifest.minBufferTime;manifestInfo.maxFragmentDuration = mpd.maxSegmentDuration;manifestInfo.duration = dashManifestModel.getDuration(mpd.manifest);manifestInfo.isDynamic = dashManifestModel.getIsDynamic(mpd.manifest);return manifestInfo;}function getMediaInfoForType(streamInfo,type){if(voPeriods.length === 0){return null;}var manifest=voPeriods[0].mpd.manifest;var realAdaptation=dashManifestModel.getAdaptationForType(manifest,streamInfo.index,type,streamInfo);if(!realAdaptation)return null;var selectedVoPeriod=getPeriodForStreamInfo(streamInfo,voPeriods);var periodId=selectedVoPeriod.id;var idx=dashManifestModel.getIndexForAdaptation(realAdaptation,manifest,streamInfo.index);voAdaptations[periodId] = voAdaptations[periodId] || dashManifestModel.getAdaptationsForPeriod(selectedVoPeriod);return convertAdaptationToMediaInfo(voAdaptations[periodId][idx]);}function getAllMediaInfoForType(streamInfo,type,externalManifest){var voLocalPeriods=voPeriods;var manifest=externalManifest;var mediaArr=[];var data=undefined,media=undefined,idx=undefined,i=undefined,j=undefined,ln=undefined;if(manifest){checkSetConfigCall();var mpd=dashManifestModel.getMpd(manifest);voLocalPeriods = dashManifestModel.getRegularPeriods(mpd);}else {if(voPeriods.length > 0){manifest = voPeriods[0].mpd.manifest;}else {return mediaArr;}}var selectedVoPeriod=getPeriodForStreamInfo(streamInfo,voLocalPeriods);var periodId=selectedVoPeriod.id;var adaptationsForType=dashManifestModel.getAdaptationsForType(manifest,streamInfo.index,type !== _streamingConstantsConstants2['default'].EMBEDDED_TEXT?type:_streamingConstantsConstants2['default'].VIDEO);if(!adaptationsForType)return mediaArr;voAdaptations[periodId] = voAdaptations[periodId] || dashManifestModel.getAdaptationsForPeriod(selectedVoPeriod);for(i = 0,ln = adaptationsForType.length;i < ln;i++) {data = adaptationsForType[i];idx = dashManifestModel.getIndexForAdaptation(data,manifest,streamInfo.index);media = convertAdaptationToMediaInfo(voAdaptations[periodId][idx]);if(type === _streamingConstantsConstants2['default'].EMBEDDED_TEXT){var accessibilityLength=media.accessibility.length;for(j = 0;j < accessibilityLength;j++) {if(!media){continue;}var accessibility=media.accessibility[j];if(accessibility.indexOf('cea-608:') === 0){var value=accessibility.substring(8);var parts=value.split(';');if(parts[0].substring(0,2) === 'CC'){for(j = 0;j < parts.length;j++) {if(!media){media = convertAdaptationToMediaInfo.call(this,voAdaptations[periodId][idx]);}convertVideoInfoToEmbeddedTextInfo(media,parts[j].substring(0,3),parts[j].substring(4));mediaArr.push(media);media = null;}}else {for(j = 0;j < parts.length;j++) { // Only languages for CC1, CC2, ...
if(!media){media = convertAdaptationToMediaInfo.call(this,voAdaptations[periodId][idx]);}convertVideoInfoToEmbeddedTextInfo(media,'CC' + (j + 1),parts[j]);mediaArr.push(media);media = null;}}}else if(accessibility.indexOf('cea-608') === 0){ // Nothing known. We interpret it as CC1=eng
convertVideoInfoToEmbeddedTextInfo(media,_streamingConstantsConstants2['default'].CC1,'eng');mediaArr.push(media);media = null;}}}else if(type === _streamingConstantsConstants2['default'].IMAGE){convertVideoInfoToThumbnailInfo(media);mediaArr.push(media);media = null;}else if(media){mediaArr.push(media);}}return mediaArr;}function checkSetConfigCall(){if(!dashManifestModel || !dashManifestModel.hasOwnProperty('getMpd') || !dashManifestModel.hasOwnProperty('getRegularPeriods')){throw new Error('setConfig function has to be called previously');}}function updatePeriods(newManifest){if(!newManifest)return null;checkSetConfigCall();var mpd=dashManifestModel.getMpd(newManifest);voPeriods = dashManifestModel.getRegularPeriods(mpd);voAdaptations = {};}function getStreamsInfo(externalManifest,maxStreamsInfo){var streams=[];var voLocalPeriods=voPeriods; //if manifest is defined, getStreamsInfo is for an outside manifest, not the current one
if(externalManifest){checkSetConfigCall();var mpd=dashManifestModel.getMpd(externalManifest);voLocalPeriods = dashManifestModel.getRegularPeriods(mpd);}if(!maxStreamsInfo){maxStreamsInfo = voLocalPeriods.length;}for(var i=0;i < maxStreamsInfo;i++) {streams.push(convertPeriodToStreamInfo(voLocalPeriods[i]));}return streams;}function checkStreamProcessor(streamProcessor){if(!streamProcessor || !streamProcessor.hasOwnProperty('getRepresentationController') || !streamProcessor.hasOwnProperty('getIndexHandler') || !streamProcessor.hasOwnProperty('getMediaInfo') || !streamProcessor.hasOwnProperty('getType') || !streamProcessor.hasOwnProperty('getStreamInfo')){throw new Error('streamProcessor parameter is missing or malformed!');}}function checkRepresentationController(representationController){if(!representationController || !representationController.hasOwnProperty('getRepresentationForQuality') || !representationController.hasOwnProperty('getCurrentRepresentation')){throw new Error('representationController parameter is missing or malformed!');}}function checkQuality(quality){var isInt=quality !== null && !isNaN(quality) && quality % 1 === 0;if(!isInt){throw new Error('quality argument is not an integer');}}function getInitRequest(streamProcessor,quality){var representationController=undefined,representation=undefined,indexHandler=undefined;checkStreamProcessor(streamProcessor);checkQuality(quality);representationController = streamProcessor.getRepresentationController();indexHandler = streamProcessor.getIndexHandler();representation = representationController?representationController.getRepresentationForQuality(quality):null;return indexHandler?indexHandler.getInitRequest(representation):null;}function getFragmentRequest(streamProcessor,representationInfo,time,options){var representationController=undefined,representation=undefined,indexHandler=undefined;var fragRequest=null;checkStreamProcessor(streamProcessor);representationController = streamProcessor.getRepresentationController();representation = getRepresentationForRepresentationInfo(representationInfo,representationController);indexHandler = streamProcessor.getIndexHandler();if(indexHandler){ //if time and options are undefined, it means the next segment is requested
//otherwise, the segment at this specific time is requested.
if(time !== undefined && options !== undefined){fragRequest = indexHandler.getSegmentRequestForTime(representation,time,options);}else {fragRequest = indexHandler.getNextSegmentRequest(representation);}}return fragRequest;}function getIndexHandlerTime(streamProcessor){checkStreamProcessor(streamProcessor);var indexHandler=streamProcessor.getIndexHandler();return indexHandler?indexHandler.getCurrentTime():NaN;}function setIndexHandlerTime(streamProcessor,value){checkStreamProcessor(streamProcessor);var indexHandler=streamProcessor.getIndexHandler();if(indexHandler){indexHandler.setCurrentTime(value);}}function resetIndexHandler(streamProcessor){checkStreamProcessor(streamProcessor);var indexHandler=streamProcessor.getIndexHandler();if(indexHandler){indexHandler.resetIndex();}}function updateData(streamProcessor){checkStreamProcessor(streamProcessor);var selectedVoPeriod=getPeriodForStreamInfo(streamProcessor.getStreamInfo(),voPeriods);var mediaInfo=streamProcessor.getMediaInfo();var voAdaptation=getAdaptationForMediaInfo(mediaInfo);var type=streamProcessor.getType();var id=undefined,realAdaptation=undefined;id = mediaInfo?mediaInfo.id:null;if(voPeriods.length > 0){realAdaptation = id?dashManifestModel.getAdaptationForId(id,voPeriods[0].mpd.manifest,selectedVoPeriod.index):dashManifestModel.getAdaptationForIndex(mediaInfo.index,voPeriods[0].mpd.manifest,selectedVoPeriod.index);streamProcessor.getRepresentationController().updateData(realAdaptation,voAdaptation,type);}} /**
     * Get a specific voRepresentation. If quality parameter is defined, this function will return the voRepresentation for this quality.
     * Otherwise, this function will return the current voRepresentation used by the representationController.
     * @param {RepresentationController} representationController - RepresentationController reference
     * @param {number} quality - quality index of the voRepresentaion expected.
     */function getRepresentationInfo(representationController,quality){checkRepresentationController(representationController);var voRepresentation=undefined;if(quality !== undefined){checkQuality(quality);voRepresentation = representationController.getRepresentationForQuality(quality);}else {voRepresentation = representationController.getCurrentRepresentation();}return voRepresentation?convertRepresentationToRepresentationInfo(voRepresentation):null;}function getEvent(eventBox,eventStreams,startTime){if(!eventBox || !eventStreams){return null;}var event=new _voEvent2['default']();var schemeIdUri=eventBox.scheme_id_uri;var value=eventBox.value;var timescale=eventBox.timescale;var presentationTimeDelta=eventBox.presentation_time_delta;var duration=eventBox.event_duration;var id=eventBox.id;var messageData=eventBox.message_data;var presentationTime=startTime * timescale + presentationTimeDelta;if(!eventStreams[schemeIdUri])return null;event.eventStream = eventStreams[schemeIdUri];event.eventStream.value = value;event.eventStream.timescale = timescale;event.duration = duration;event.id = id;event.presentationTime = presentationTime;event.messageData = messageData;event.presentationTimeDelta = presentationTimeDelta;return event;}function getEventsFor(info,streamProcessor){var events=[];if(voPeriods.length === 0){return events;}var manifest=voPeriods[0].mpd.manifest;if(info instanceof _streamingVoStreamInfo2['default']){events = dashManifestModel.getEventsForPeriod(getPeriodForStreamInfo(info,voPeriods));}else if(info instanceof _streamingVoMediaInfo2['default']){events = dashManifestModel.getEventStreamForAdaptationSet(manifest,getAdaptationForMediaInfo(info));}else if(info instanceof _streamingVoRepresentationInfo2['default']){events = dashManifestModel.getEventStreamForRepresentation(manifest,getRepresentationForRepresentationInfo(info,streamProcessor.getRepresentationController()));}return events;}function reset(){voPeriods = [];voAdaptations = {};}instance = {convertDataToRepresentationInfo:convertRepresentationToRepresentationInfo,getDataForMedia:getAdaptationForMediaInfo,getStreamsInfo:getStreamsInfo,getMediaInfoForType:getMediaInfoForType,getAllMediaInfoForType:getAllMediaInfoForType,getRepresentationInfo:getRepresentationInfo,updateData:updateData,getInitRequest:getInitRequest,getFragmentRequest:getFragmentRequest,getIndexHandlerTime:getIndexHandlerTime,setIndexHandlerTime:setIndexHandlerTime,getEventsFor:getEventsFor,getEvent:getEvent,setConfig:setConfig,updatePeriods:updatePeriods,reset:reset,resetIndexHandler:resetIndexHandler};setup();return instance;}DashAdapter.__dashjs_factory_name = 'DashAdapter';exports['default'] = _coreFactoryMaker2['default'].getSingletonFactory(DashAdapter);module.exports = exports['default'];
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