@l5i/dashjs/build/es5/src/streaming/text/NotFragmentedTextBufferController.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 _constantsConstants=require('../constants/Constants');var _constantsConstants2=_interopRequireDefault(_constantsConstants);var _coreEventBus=require('../../core/EventBus');var _coreEventBus2=_interopRequireDefault(_coreEventBus);var _coreEventsEvents=require('../../core/events/Events');var _coreEventsEvents2=_interopRequireDefault(_coreEventsEvents);var _coreFactoryMaker=require('../../core/FactoryMaker');var _coreFactoryMaker2=_interopRequireDefault(_coreFactoryMaker);var _utilsInitCache=require('../utils/InitCache');var _utilsInitCache2=_interopRequireDefault(_utilsInitCache);var _SourceBufferSink=require('../SourceBufferSink');var _SourceBufferSink2=_interopRequireDefault(_SourceBufferSink);var _streamingTextTextController=require('../../streaming/text/TextController');var _streamingTextTextController2=_interopRequireDefault(_streamingTextTextController);var _streamingVoDashJSError=require('../../streaming/vo/DashJSError');var _streamingVoDashJSError2=_interopRequireDefault(_streamingVoDashJSError);var _coreErrorsErrors=require('../../core/errors/Errors');var _coreErrorsErrors2=_interopRequireDefault(_coreErrorsErrors);var BUFFER_CONTROLLER_TYPE='NotFragmentedTextBufferController';function NotFragmentedTextBufferController(config){config = config || {};var context=this.context;var eventBus=(0,_coreEventBus2['default'])(context).getInstance();var textController=(0,_streamingTextTextController2['default'])(context).getInstance();var errHandler=config.errHandler;var type=config.type;var mimeType=config.mimeType;var streamProcessor=config.streamProcessor;var instance=undefined,isBufferingCompleted=undefined,initialized=undefined,mediaSource=undefined,buffer=undefined,initCache=undefined;function setup(){initialized = false;mediaSource = null;isBufferingCompleted = false;eventBus.on(_coreEventsEvents2['default'].DATA_UPDATE_COMPLETED,onDataUpdateCompleted,instance);eventBus.on(_coreEventsEvents2['default'].INIT_FRAGMENT_LOADED,onInitFragmentLoaded,instance);}function getBufferControllerType(){return BUFFER_CONTROLLER_TYPE;}function initialize(source){setMediaSource(source);initCache = (0,_utilsInitCache2['default'])(context).getInstance();} /**
     * @param {MediaInfo }mediaInfo
     * @memberof BufferController#
     */function createBuffer(mediaInfo){try{buffer = (0,_SourceBufferSink2['default'])(context).create(mediaSource,mediaInfo);if(!initialized){var textBuffer=buffer.getBuffer();if(textBuffer.hasOwnProperty(_constantsConstants2['default'].INITIALIZE)){textBuffer.initialize(mimeType,streamProcessor);}initialized = true;}return buffer;}catch(e) {if(mediaInfo.isText || mediaInfo.codec.indexOf('codecs="stpp') !== -1 || mediaInfo.codec.indexOf('codecs="wvtt') !== -1){try{buffer = textController.getTextSourceBuffer();}catch(e) {errHandler.mediaSourceError('Error creating ' + type + ' source buffer.');errHandler.error(new _streamingVoDashJSError2['default'](_coreErrorsErrors2['default'].MEDIASOURCE_TYPE_UNSUPPORTED_CODE,_coreErrorsErrors2['default'].MEDIASOURCE_TYPE_UNSUPPORTED_MESSAGE + type + ' : ' + e.message));}}else {errHandler.mediaSourceError('Error creating ' + type + ' source buffer.');errHandler.error(new _streamingVoDashJSError2['default'](_coreErrorsErrors2['default'].MEDIASOURCE_TYPE_UNSUPPORTED_CODE,_coreErrorsErrors2['default'].MEDIASOURCE_TYPE_UNSUPPORTED_MESSAGE + type));}}}function getType(){return type;}function getBuffer(){return buffer;}function setMediaSource(value){mediaSource = value;}function getMediaSource(){return mediaSource;}function getStreamProcessor(){return streamProcessor;}function getIsPruningInProgress(){return false;}function dischargePreBuffer(){}function setSeekStartTime(){ //Unused - TODO Remove need for stub function
}function getBufferLevel(){return 0;}function getIsBufferingCompleted(){return isBufferingCompleted;}function reset(errored){eventBus.off(_coreEventsEvents2['default'].DATA_UPDATE_COMPLETED,onDataUpdateCompleted,instance);eventBus.off(_coreEventsEvents2['default'].INIT_FRAGMENT_LOADED,onInitFragmentLoaded,instance);if(!errored && buffer){buffer.abort();buffer.reset();buffer = null;}}function onDataUpdateCompleted(e){if(e.sender.getStreamProcessor() !== streamProcessor){return;}var chunk=initCache.extract(streamProcessor.getStreamInfo().id,e.sender.getCurrentRepresentation().id);if(!chunk){eventBus.trigger(_coreEventsEvents2['default'].TIMED_TEXT_REQUESTED,{index:0,sender:e.sender}); //TODO make index dynamic if referring to MP?
}}function onInitFragmentLoaded(e){if(e.fragmentModel !== streamProcessor.getFragmentModel() || !e.chunk.bytes){return;}initCache.save(e.chunk);buffer.append(e.chunk);eventBus.trigger(_coreEventsEvents2['default'].STREAM_COMPLETED,{request:e.request,fragmentModel:e.fragmentModel});}function switchInitData(streamId,representationId){var chunk=initCache.extract(streamId,representationId);if(!chunk){eventBus.trigger(_coreEventsEvents2['default'].TIMED_TEXT_REQUESTED,{index:0,sender:instance});}}function getRangeAt(){return null;}function updateTimestampOffset(MSETimeOffset){if(buffer.timestampOffset !== MSETimeOffset && !isNaN(MSETimeOffset)){buffer.timestampOffset = MSETimeOffset;}}instance = {getBufferControllerType:getBufferControllerType,initialize:initialize,createBuffer:createBuffer,getType:getType,getStreamProcessor:getStreamProcessor,setSeekStartTime:setSeekStartTime,getBuffer:getBuffer,getBufferLevel:getBufferLevel,setMediaSource:setMediaSource,getMediaSource:getMediaSource,getIsBufferingCompleted:getIsBufferingCompleted,getIsPruningInProgress:getIsPruningInProgress,dischargePreBuffer:dischargePreBuffer,switchInitData:switchInitData,getRangeAt:getRangeAt,reset:reset,updateTimestampOffset:updateTimestampOffset};setup();return instance;}NotFragmentedTextBufferController.__dashjs_factory_name = BUFFER_CONTROLLER_TYPE;exports['default'] = _coreFactoryMaker2['default'].getClassFactory(NotFragmentedTextBufferController);module.exports = exports['default'];
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