blob: 7c7d5c8e528ddc92582f130210824db01b901f45 (
plain)
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
|
<!DOCTYPE HTML>
<html>
<head>
<title>Test OfflineAudioContext with a channel count less than the specified number</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="webaudio.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
addLoadEvent(function() {
var ctx = new OfflineAudioContext(6, 100, 22050);
var buf = ctx.createBuffer(2, 100, ctx.sampleRate);
for (var i = 0; i < 2; ++i) {
for (var j = 0; j < 100; ++j) {
buf.getChannelData(i)[j] = Math.sin(2 * Math.PI * 200 * j / ctx.sampleRate);
}
}
var emptyBuffer = ctx.createBuffer(1, 100, ctx.sampleRate);
var src = ctx.createBufferSource();
src.buffer = buf;
src.start(0);
src.connect(ctx.destination);
ctx.destination.channelCountMode = "max";
ctx.startRendering();
ctx.oncomplete = function(e) {
is(e.renderedBuffer.numberOfChannels, 6, "Correct expected number of buffers");
compareChannels(e.renderedBuffer.getChannelData(0), buf.getChannelData(0));
compareChannels(e.renderedBuffer.getChannelData(1), buf.getChannelData(1));
for (var i = 2; i < 6; ++i) {
compareChannels(e.renderedBuffer.getChannelData(i), emptyBuffer.getChannelData(0));
}
SimpleTest.finish();
};
});
</script>
</pre>
</body>
</html>
|
