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comparison: content/media/webaudio/test/test_delayNodeWithGain.html
content/media/webaudio/test/test_delayNodeWithGain.html
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:dc563ce28fc1 |
|---|---|
| 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"> | |
| 12 | |
| 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 } | |
| 21 | |
| 22 var source = context.createBufferSource(); | |
| 23 | |
| 24 var delay = context.createDelay(); | |
| 25 | |
| 26 source.buffer = buffer; | |
| 27 | |
| 28 var gain = context.createGain(); | |
| 29 gain.gain.value = 0.5; | |
| 30 | |
| 31 source.connect(gain); | |
| 32 gain.connect(delay); | |
| 33 | |
| 34 // Delay the source stream by 2048 frames | |
| 35 delay.delayTime.value = 2048 / context.sampleRate; | |
| 36 | |
| 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 }; | |
| 48 | |
| 49 runTest(); | |
| 50 | |
| 51 </script> | |
| 52 </pre> | |
| 53 </body> | |
| 54 </html> |
