content/media/webaudio/test/test_gainNodeInLoop.html@6474c204b198
content/media/webaudio/test/test_gainNodeInLoop.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>Test GainNode in presence of loops</title>
5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
6 <script type="text/javascript" src="webaudio.js"></script>
7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
8 </head>
9 <body>
10 <pre id="test">
11 <script class="testbody" type="text/javascript">
13 var gTest = {
14 length: 4096,
15 numberOfChannels: 1,
16 createGraph: function(context) {
17 var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate);
18 for (var i = 0; i < 2048; ++i) {
19 sourceBuffer.getChannelData(0)[i] = 1;
20 }
22 var source = context.createBufferSource();
23 source.buffer = sourceBuffer;
24 source.loop = true;
25 source.start(0);
26 source.stop(sourceBuffer.duration * 2);
28 var gain = context.createGain();
29 // Adjust the gain in a way that we don't just end up modifying AudioChunk::mVolume
30 gain.gain.setValueAtTime(0.5, 0);
31 source.connect(gain);
32 return gain;
33 },
34 createExpectedBuffers: function(context) {
35 var expectedBuffer = context.createBuffer(1, 4096, context.sampleRate);
36 for (var i = 0; i < 4096; ++i) {
37 expectedBuffer.getChannelData(0)[i] = 0.5;
38 }
39 return expectedBuffer;
40 },
41 };
43 runTest();
45 </script>
46 </pre>
47 </body>
48 </html>
