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comparison: content/media/webaudio/test/test_convolverNodeChannelCount.html
content/media/webaudio/test/test_convolverNodeChannelCount.html
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| -1:000000000000 | 0:7994eb5b84a2 |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test ConvolverNode channel count</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 const signalLength = 2048; | |
| 14 const responseLength = 1000; | |
| 15 const outputLength = 2048; // < signalLength + responseLength to test bug 910171 | |
| 16 | |
| 17 var gTest = { | |
| 18 length: outputLength, | |
| 19 numberOfChannels: 2, | |
| 20 createGraph: function(context) { | |
| 21 var buffer = context.createBuffer(2, signalLength, context.sampleRate); | |
| 22 for (var i = 0; i < signalLength; ++i) { | |
| 23 var sample = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); | |
| 24 // When mixed into a single channel, this produces silence | |
| 25 buffer.getChannelData(0)[i] = sample; | |
| 26 buffer.getChannelData(1)[i] = -sample; | |
| 27 } | |
| 28 | |
| 29 var response = context.createBuffer(2, responseLength, context.sampleRate); | |
| 30 for (var i = 0; i < responseLength; ++i) { | |
| 31 response.getChannelData(0)[i] = i / responseLength; | |
| 32 response.getChannelData(1)[i] = 1 - (i / responseLength); | |
| 33 } | |
| 34 | |
| 35 var convolver = context.createConvolver(); | |
| 36 convolver.buffer = response; | |
| 37 convolver.channelCount = 1; | |
| 38 | |
| 39 expectException(function() { convolver.channelCount = 3; }, | |
| 40 DOMException.NOT_SUPPORTED_ERR); | |
| 41 convolver.channelCountMode = "explicit"; | |
| 42 expectException(function() { convolver.channelCountMode = "max"; }, | |
| 43 DOMException.NOT_SUPPORTED_ERR); | |
| 44 convolver.channelInterpretation = "discrete"; | |
| 45 convolver.channelInterpretation = "speakers"; | |
| 46 | |
| 47 var source = context.createBufferSource(); | |
| 48 source.buffer = buffer; | |
| 49 source.connect(convolver); | |
| 50 source.start(0); | |
| 51 | |
| 52 return convolver; | |
| 53 }, | |
| 54 }; | |
| 55 | |
| 56 runTest(); | |
| 57 | |
| 58 </script> | |
| 59 </pre> | |
| 60 </body> | |
| 61 </html> |
