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comparison: content/media/webaudio/test/test_nodeToParamConnection.html
content/media/webaudio/test/test_nodeToParamConnection.html
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| -1:000000000000 | 0:18757bd99ad2 |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test connecting an AudioNode to an AudioParam</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"> | |
| 12 | |
| 13 var gTest = { | |
| 14 length: 2048, | |
| 15 createGraph: function(context) { | |
| 16 var sourceBuffer = context.createBuffer(2, 2048, context.sampleRate); | |
| 17 for (var i = 0; i < 2048; ++i) { | |
| 18 sourceBuffer.getChannelData(0)[i] = 1; | |
| 19 sourceBuffer.getChannelData(1)[i] = -1; | |
| 20 } | |
| 21 | |
| 22 var destination = context.destination; | |
| 23 | |
| 24 var paramSource = context.createBufferSource(); | |
| 25 paramSource.buffer = this.buffer; | |
| 26 | |
| 27 var source = context.createBufferSource(); | |
| 28 source.buffer = sourceBuffer; | |
| 29 | |
| 30 var gain = context.createGain(); | |
| 31 | |
| 32 paramSource.connect(gain.gain); | |
| 33 source.connect(gain); | |
| 34 | |
| 35 paramSource.start(0); | |
| 36 source.start(0); | |
| 37 return gain; | |
| 38 }, | |
| 39 createExpectedBuffers: function(context) { | |
| 40 this.buffer = context.createBuffer(2, 2048, context.sampleRate); | |
| 41 for (var i = 0; i < 2048; ++i) { | |
| 42 for (var j = 0; j < 2; ++j) { | |
| 43 this.buffer.getChannelData(j)[i] = Math.sin(440 * 2 * (j + 1) * Math.PI * i / context.sampleRate); | |
| 44 } | |
| 45 } | |
| 46 var expectedBuffer = context.createBuffer(2, 2048, context.sampleRate); | |
| 47 for (var i = 0; i < 2048; ++i) { | |
| 48 expectedBuffer.getChannelData(0)[i] = 1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2; | |
| 49 expectedBuffer.getChannelData(1)[i] = -(1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2); | |
| 50 } | |
| 51 return expectedBuffer; | |
| 52 }, | |
| 53 }; | |
| 54 | |
| 55 runTest(); | |
| 56 | |
| 57 </script> | |
| 58 </pre> | |
| 59 </body> | |
| 60 </html> |
