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| 1 <!DOCTYPE html> | |
| 2 <html> | |
| 3 | |
| 4 <head> | |
| 5 <script src="../resources/js-test.js"></script> | |
| 6 <script src="resources/compatibility.js"></script> | |
| 7 <script src="resources/audit-util.js"></script> | |
| 8 <script src="resources/audio-testing.js"></script> | |
| 9 <script src="resources/audiobuffersource-testing.js"></script> | |
| 10 <script src="resources/buffer-loader.js"></script> | |
| 11 </head> | |
| 12 | |
| 13 <body> | |
| 14 <script> | |
| 15 description('AudioBufferSourceNode: oscillator-driven detune modulation.'); | |
| 16 window.jsTestIsAsync = true; | |
| 17 | |
| 18 var sampleRate = 44100; | |
| 19 var duration = 0.25; | |
| 20 | |
| 21 var context = new OfflineAudioContext(1, sampleRate * duration, sampleRate); | |
| 22 var referenceBuffer; | |
| 23 | |
| 24 var audit = Audit.createTaskRunner(); | |
| 25 | |
| 26 // Task: Load the reference file asynchronously. In order to create a new | |
| 27 // reference file, use the task 'generate-reference' below. | |
| 28 audit.defineTask('load-reference', function (done) { | |
| 29 var loader = new BufferLoader(context, [ | |
| 30 'audiobuffersource-detune-modulation-expected.wav' | |
| 31 ], function (bufferList) { | |
| 32 referenceBuffer = bufferList[0]; | |
| 33 done(); | |
| 34 }); | |
| 35 | |
| 36 loader.load(); | |
| 37 }); | |
| 38 | |
| 39 | |
| 40 // Task: Render the actual buffer and compare with the reference. | |
| 41 audit.defineTask('generate-verify', function (done) { | |
| 42 | |
| 43 // With this setting, the detune will be changing continuously and | |
| 44 // repeatedly within the range of [-1200, 1200] around 440Hz, based on the | |
| 45 // input from the oscillator. | |
| 46 createSawtoothWithModulation(context, 'detune', 440, 1200); | |
| 47 | |
| 48 context.startRendering().then(function (renderedBuffer) { | |
| 49 var actual = renderedBuffer.getChannelData(0); | |
| 50 var expected = referenceBuffer.getChannelData(0); | |
| 51 | |
| 52 // Compare two buffers with arbitrary (yet reasonable) constraints. | |
| 53 // There parameters are determined by try bot experiments. | |
| 54 compareBuffersWithConstraints(actual, expected, { | |
| 55 thresholdSNR: 93.31, | |
| 56 thresholdDiffULP: 1.01, | |
| 57 thresholdDiffCount: 0, | |
| 58 bitDepth: 16 | |
| 59 }); | |
| 60 | |
| 61 }).then(done); | |
| 62 }); | |
| 63 | |
| 64 // Task: Create a new reference audio file. See .runTasks() below to run | |
| 65 // this task. | |
| 66 audit.defineTask('generate-reference', function (done) { | |
| 67 if (!window.testRunner) { | |
| 68 done(); | |
| 69 return; | |
| 70 } | |
| 71 | |
| 72 // With this setting, the detune will be changing continuously and | |
| 73 // repeatedly within the range of [-1200, 1200] around 440Hz, based on the | |
| 74 // input from the oscillator. | |
| 75 createSawtoothWithModulation(context, 'detune', 440, 1200); | |
| 76 | |
| 77 // |finishAudioTest| will automatically create a reference audio file from | |
| 78 // the OAC rendering if the reference file does not exist. | |
| 79 context.oncomplete = finishAudioTest; | |
| 80 context.startRendering(); | |
| 81 testRunner.waitUntilDone(); | |
| 82 | |
| 83 done(); | |
| 84 }); | |
| 85 | |
| 86 audit.defineTask('finish', function (done) { | |
| 87 finishJSTest(); | |
| 88 done(); | |
| 89 }); | |
| 90 | |
| 91 window.onload = function () { | |
| 92 audit.runTasks( | |
| 93 'load-reference', | |
| 94 'generate-verify', | |
| 95 'finish' | |
| 96 ); | |
| 97 }; | |
| 98 | |
| 99 // Use this task to generate a new reference audio file. Make sure to | |
| 100 // comment out .runTasks() above before use this. | |
| 101 // audit.runTasks('generate-reference'); | |
| 102 | |
| 103 successfullyParsed = true; | |
| 104 </script> | |
| 105 </body> | |
| 106 | |
| 107 </html> | |
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Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
