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comparison: content/media/webaudio/test/test_convolverNode_mono_mono.html
content/media/webaudio/test/test_convolverNode_mono_mono.html
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:00380839711e |
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| 1 <!DOCTYPE html> | |
| 2 | |
| 3 <html> | |
| 4 <head> | |
| 5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 6 <script type="text/javascript" src="webaudio.js"></script> | |
| 7 <script type="text/javascript" src="layouttest-glue.js"></script> | |
| 8 <script type="text/javascript" src="blink/audio-testing.js"></script> | |
| 9 <script type="text/javascript" src="blink/convolution-testing.js"></script> | |
| 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> | |
| 11 </head> | |
| 12 | |
| 13 <body> | |
| 14 | |
| 15 <div id="description"></div> | |
| 16 <div id="console"></div> | |
| 17 | |
| 18 <script> | |
| 19 description("Tests ConvolverNode processing a mono channel with mono impulse response."); | |
| 20 SimpleTest.waitForExplicitFinish(); | |
| 21 | |
| 22 // To test the convolver, we convolve two square pulses together to | |
| 23 // produce a triangular pulse. To verify the result is correct we | |
| 24 // check several parts of the result. First, we make sure the initial | |
| 25 // part of the result is zero (due to the latency in the convolver). | |
| 26 // Next, the triangular pulse should match the theoretical result to | |
| 27 // within some roundoff. After the triangular pulse, the result | |
| 28 // should be exactly zero, but round-off prevents that. We make sure | |
| 29 // the part after the pulse is sufficiently close to zero. Finally, | |
| 30 // the result should be exactly zero because the inputs are exactly | |
| 31 // zero. | |
| 32 function runTest() { | |
| 33 if (window.testRunner) { | |
| 34 testRunner.dumpAsText(); | |
| 35 testRunner.waitUntilDone(); | |
| 36 } | |
| 37 | |
| 38 window.jsTestIsAsync = true; | |
| 39 | |
| 40 // Create offline audio context. | |
| 41 var context = new OfflineAudioContext(2, sampleRate * renderLengthSeconds, sampleRate); | |
| 42 | |
| 43 var squarePulse = createSquarePulseBuffer(context, pulseLengthFrames); | |
| 44 var trianglePulse = createTrianglePulseBuffer(context, 2 * pulseLengthFrames); | |
| 45 | |
| 46 var bufferSource = context.createBufferSource(); | |
| 47 bufferSource.buffer = squarePulse; | |
| 48 | |
| 49 var convolver = context.createConvolver(); | |
| 50 convolver.normalize = false; | |
| 51 convolver.buffer = squarePulse; | |
| 52 | |
| 53 bufferSource.connect(convolver); | |
| 54 convolver.connect(context.destination); | |
| 55 | |
| 56 bufferSource.start(0); | |
| 57 | |
| 58 context.oncomplete = checkConvolvedResult(trianglePulse); | |
| 59 context.startRendering(); | |
| 60 } | |
| 61 | |
| 62 function finishJSTest() { | |
| 63 SimpleTest.finish(); | |
| 64 } | |
| 65 | |
| 66 runTest(); | |
| 67 successfullyParsed = true; | |
| 68 | |
| 69 </script> | |
| 70 | |
| 71 <script src="../fast/js/resources/js-test-post.js"></script> | |
| 72 </body> | |
| 73 </html> |
