| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // MediaSourceUtils provides basic functionality to load content using MSE API. |
| var MediaSourceUtils = new function() { |
| } |
| |
| MediaSourceUtils.loadMediaSourceFromTestConfig = function(testConfig, |
| appendCallbackFn) { |
| return this.loadMediaSource(testConfig.mediaFile, |
| testConfig.mediaType, |
| appendCallbackFn); |
| }; |
| |
| MediaSourceUtils.loadMediaSource = function(mediaFiles, |
| mediaTypes, |
| appendCallbackFn) { |
| if (!mediaFiles || !mediaTypes) |
| Utils.failTest('Missing parameters in loadMediaSource().'); |
| |
| var mediaFiles = Utils.convertToArray(mediaFiles); |
| var mediaTypes = Utils.convertToArray(mediaTypes); |
| var totalAppended = 0; |
| function onSourceOpen(e) { |
| Utils.timeLog('onSourceOpen', e); |
| // We can load multiple media files using the same media type. However, if |
| // more than one media type is used, we expect to have a media type entry |
| // for each corresponding media file. |
| var srcBuffer = null; |
| for (var i = 0; i < mediaFiles.length; i++) { |
| if (i == 0 || mediaFiles.length == mediaTypes.length) { |
| Utils.timeLog('Creating a source buffer for type ' + mediaTypes[i]); |
| try { |
| srcBuffer = mediaSource.addSourceBuffer(mediaTypes[i]); |
| } catch (e) { |
| Utils.failTest('Exception adding source buffer: ' + e.message); |
| return; |
| } |
| } |
| doAppend(mediaFiles[i], srcBuffer); |
| } |
| } |
| |
| function doAppend(mediaFile, srcBuffer) { |
| var xhr = new XMLHttpRequest(); |
| xhr.open('GET', mediaFile); |
| xhr.responseType = 'arraybuffer'; |
| xhr.addEventListener('load', function(e) { |
| var onUpdateEnd = function(e) { |
| Utils.timeLog('End of appending buffer from ' + mediaFile); |
| srcBuffer.removeEventListener('updateend', onUpdateEnd); |
| totalAppended++; |
| if (totalAppended == mediaFiles.length) { |
| if (appendCallbackFn) |
| appendCallbackFn(mediaSource); |
| else |
| mediaSource.endOfStream(); |
| } |
| }; |
| srcBuffer.addEventListener('updateend', onUpdateEnd); |
| srcBuffer.appendBuffer(new Uint8Array(e.target.response)); |
| }); |
| xhr.send(); |
| } |
| |
| var mediaSource = new MediaSource(); |
| mediaSource.addEventListener('sourceopen', onSourceOpen); |
| return mediaSource; |
| }; |