content/media/webaudio/test/test_delayNodeWithGain.html@44a2da4a2ab2
content/media/webaudio/test/test_delayNodeWithGain.html
Fri, 16 Jan 2015 04:50:19 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 04:50:19 +0100
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
- permissions
- -rw-r--r--
Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>Test DelayNode with a GainNode</title>
5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
6 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
7 </head>
8 <body>
9 <pre id="test">
10 <script src="webaudio.js" type="text/javascript"></script>
11 <script class="testbody" type="text/javascript">
13 var gTest = {
14 length: 4096,
15 numberOfChannels: 1,
16 createGraph: function(context) {
17 var buffer = context.createBuffer(1, 2048, context.sampleRate);
18 for (var i = 0; i < 2048; ++i) {
19 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
20 }
22 var source = context.createBufferSource();
24 var delay = context.createDelay();
26 source.buffer = buffer;
28 var gain = context.createGain();
29 gain.gain.value = 0.5;
31 source.connect(gain);
32 gain.connect(delay);
34 // Delay the source stream by 2048 frames
35 delay.delayTime.value = 2048 / context.sampleRate;
37 source.start(0);
38 return delay;
39 },
40 createExpectedBuffers: function(context) {
41 var expectedBuffer = context.createBuffer(1, 2048 * 2, context.sampleRate);
42 for (var i = 2048; i < 2048 * 2; ++i) {
43 expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * (i - 2048) / context.sampleRate) / 2;
44 }
45 return expectedBuffer;
46 },
47 };
49 runTest();
51 </script>
52 </pre>
53 </body>
54 </html>
