1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
// 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;
};
|
