1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 function loadMediaFromURL(video) { 6 installTitleEventHandler(video, 'error'); 7 video.addEventListener('playing', function(event) { 8 console.log('Video Playing.'); 9 }); 10 var source = loadMediaSource(QueryString.mediafile, QueryString.mediatype); 11 video.src = window.URL.createObjectURL(source); 12 } 13 14 function loadMediaSource(mediaFiles, mediaTypes, appendSourceCallbackFn) { 15 mediaFiles = convertToArray(mediaFiles); 16 mediaTypes = convertToArray(mediaTypes); 17 18 if (!mediaFiles || !mediaTypes) 19 failTest('Missing parameters in loadMediaSource().'); 20 21 var totalAppended = 0; 22 function onSourceOpen(e) { 23 console.log('onSourceOpen', e); 24 // We can load multiple media files using the same media type. However, if 25 // more than one media type is used, we expect to have a media type entry 26 // for each corresponding media file. 27 var srcBuffer = null; 28 for (var i = 0; i < mediaFiles.length; i++) { 29 if (i == 0 || mediaFiles.length == mediaTypes.length) { 30 console.log('Creating a source buffer for type ' + mediaTypes[i]); 31 try { 32 srcBuffer = mediaSource.addSourceBuffer(mediaTypes[i]); 33 } catch (e) { 34 failTest('Exception adding source buffer: ' + e.message); 35 return; 36 } 37 } 38 doAppend(mediaFiles[i], srcBuffer); 39 } 40 } 41 42 function doAppend(mediaFile, srcBuffer) { 43 var xhr = new XMLHttpRequest(); 44 xhr.open('GET', mediaFile); 45 xhr.responseType = 'arraybuffer'; 46 xhr.addEventListener('load', function(e) { 47 console.log('Appending to buffer ' + mediaFile); 48 srcBuffer.append(new Uint8Array(e.target.response)); 49 totalAppended++; 50 if (totalAppended == mediaFiles.length) { 51 if (appendSourceCallbackFn) 52 appendSourceCallbackFn(mediaSource); 53 else 54 mediaSource.endOfStream(); 55 } 56 }); 57 xhr.send(); 58 } 59 60 var mediaSource = new WebKitMediaSource(); 61 mediaSource.addEventListener('webkitsourceopen', onSourceOpen); 62 return mediaSource; 63 } 64
