@l5i/dashjs
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A reference client implementation for the playback of MPEG DASH via Javascript and compliant browsers.
36 lines (35 loc) • 4.21 kB
JavaScript
/**
* 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 _MetricsController=require('./MetricsController');var _MetricsController2=_interopRequireDefault(_MetricsController);var _utilsManifestParsing=require('../utils/ManifestParsing');var _utilsManifestParsing2=_interopRequireDefault(_utilsManifestParsing);var _MetricsReportingEvents=require('../MetricsReportingEvents');var _MetricsReportingEvents2=_interopRequireDefault(_MetricsReportingEvents);function MetricsCollectionController(config){config = config || {};var metricsControllers={};var context=this.context;var eventBus=config.eventBus;var events=config.events;function update(e){if(e.error){return;} // start by assuming all existing controllers need removing
var controllersToRemove=Object.keys(metricsControllers);var metrics=(0,_utilsManifestParsing2['default'])(context).getInstance({dashManifestModel:config.dashManifestModel,constants:config.constants}).getMetrics(e.manifest);metrics.forEach(function(m){var key=JSON.stringify(m);if(!metricsControllers.hasOwnProperty(key)){try{var controller=(0,_MetricsController2['default'])(context).create(config);controller.initialize(m);metricsControllers[key] = controller;}catch(e) { // fail quietly
}}else { // we still need this controller - delete from removal list
controllersToRemove.splice(key,1);}}); // now remove the unwanted controllers
controllersToRemove.forEach(function(c){metricsControllers[c].reset();delete metricsControllers[c];});eventBus.trigger(_MetricsReportingEvents2['default'].METRICS_INITIALISATION_COMPLETE);}function resetMetricsControllers(){Object.keys(metricsControllers).forEach(function(key){metricsControllers[key].reset();});metricsControllers = {};}function setup(){eventBus.on(events.MANIFEST_UPDATED,update);eventBus.on(events.STREAM_TEARDOWN_COMPLETE,resetMetricsControllers);}function reset(){eventBus.off(events.MANIFEST_UPDATED,update);eventBus.off(events.STREAM_TEARDOWN_COMPLETE,resetMetricsControllers);}setup();return {reset:reset};}MetricsCollectionController.__dashjs_factory_name = 'MetricsCollectionController';exports['default'] = dashjs.FactoryMaker.getClassFactory(MetricsCollectionController); /* jshint ignore:line */module.exports = exports['default'];
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