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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 var onUpdateEnd = function(e) { | |
48 console.log('End of appending buffer from ' + mediaFile); | |
49 srcBuffer.removeEventListener('updateend', onUpdateEnd); | |
50 totalAppended++; | |
51 if (totalAppended == mediaFiles.length) { | |
52 if (appendSourceCallbackFn) | |
53 appendSourceCallbackFn(mediaSource); | |
54 else | |
55 mediaSource.endOfStream(); | |
56 } | |
57 }; | |
58 srcBuffer.addEventListener('updateend', onUpdateEnd); | |
59 srcBuffer.appendBuffer(new Uint8Array(e.target.response)); | |
60 }); | |
61 xhr.send(); | |
62 } | |
63 | |
64 var mediaSource = new MediaSource(); | |
65 mediaSource.addEventListener('sourceopen', onSourceOpen); | |
66 return mediaSource; | |
67 } | |
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