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comparison: content/media/webaudio/test/test_dynamicsCompressorNode.html
content/media/webaudio/test/test_dynamicsCompressorNode.html
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:41e83c97916f |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test DynamicsCompressorNode</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 class="testbody" type="text/javascript"> | |
| 11 | |
| 12 function near(a, b, msg) { | |
| 13 ok(Math.abs(a - b) < 1e-4, msg); | |
| 14 } | |
| 15 | |
| 16 SimpleTest.waitForExplicitFinish(); | |
| 17 addLoadEvent(function() { | |
| 18 var context = new AudioContext(); | |
| 19 var buffer = context.createBuffer(1, 2048, context.sampleRate); | |
| 20 for (var i = 0; i < 2048; ++i) { | |
| 21 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); | |
| 22 } | |
| 23 | |
| 24 var destination = context.destination; | |
| 25 | |
| 26 var source = context.createBufferSource(); | |
| 27 | |
| 28 var compressor = context.createDynamicsCompressor(); | |
| 29 | |
| 30 source.buffer = buffer; | |
| 31 | |
| 32 source.connect(compressor); | |
| 33 compressor.connect(destination); | |
| 34 | |
| 35 is(compressor.channelCount, 2, "compressor node has 2 input channels by default"); | |
| 36 is(compressor.channelCountMode, "explicit", "Correct channelCountMode for the compressor node"); | |
| 37 is(compressor.channelInterpretation, "speakers", "Correct channelCountInterpretation for the compressor node"); | |
| 38 | |
| 39 // Verify default values | |
| 40 with (compressor) { | |
| 41 near(threshold.defaultValue, -24, "Correct default value for threshold"); | |
| 42 near(knee.defaultValue, 30, "Correct default value for knee"); | |
| 43 near(ratio.defaultValue, 12, "Correct default value for ratio"); | |
| 44 near(reduction.defaultValue, 0, "Correct default value for reduction"); | |
| 45 near(attack.defaultValue, 0.003, "Correct default value for attack"); | |
| 46 near(release.defaultValue, 0.25, "Correct default value for release"); | |
| 47 } | |
| 48 | |
| 49 source.start(0); | |
| 50 SimpleTest.executeSoon(function() { | |
| 51 source.stop(0); | |
| 52 source.disconnect(); | |
| 53 compressor.disconnect(); | |
| 54 | |
| 55 SimpleTest.finish(); | |
| 56 }); | |
| 57 }); | |
| 58 | |
| 59 </script> | |
| 60 </pre> | |
| 61 </body> | |
| 62 </html> |
