blob: 8a77e7d0a2e3622e8ac73f0745c55938c1cfc47c (
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
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
<!DOCTYPE HTML>
<html>
<head>
<title>Test connecting an AudioNode to an AudioParam</title>
<script 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">
var gTest = {
length: 2048,
createGraph(context) {
var sourceBuffer = context.createBuffer(2, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
sourceBuffer.getChannelData(0)[i] = 1;
sourceBuffer.getChannelData(1)[i] = -1;
}
var destination = context.destination;
var paramSource = context.createBufferSource();
paramSource.buffer = this.buffer;
var source = context.createBufferSource();
source.buffer = sourceBuffer;
var gain = context.createGain();
paramSource.connect(gain.gain);
source.connect(gain);
paramSource.start(0);
source.start(0);
return gain;
},
createExpectedBuffers(context) {
this.buffer = context.createBuffer(2, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
for (var j = 0; j < 2; ++j) {
this.buffer.getChannelData(j)[i] = Math.sin(440 * 2 * (j + 1) * Math.PI * i / context.sampleRate);
}
}
var expectedBuffer = context.createBuffer(2, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
expectedBuffer.getChannelData(0)[i] = 1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2;
expectedBuffer.getChannelData(1)[i] = -(1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2);
}
return expectedBuffer;
},
};
runTest();
</script>
</pre>
</body>
</html>
|
