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| 1 <!doctype html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <title>Test WaveShaper Copies Curve Data</title> | 4 <title> |
| 5 Test WaveShaper Copies Curve Data |
| 6 </title> |
| 5 <script src="../../resources/testharness.js"></script> | 7 <script src="../../resources/testharness.js"></script> |
| 6 <script src="../../resources/testharnessreport.js"></script> | 8 <script src="../../resources/testharnessreport.js"></script> |
| 7 <script src="../resources/audit-util.js"></script> | 9 <script src="../resources/audit-util.js"></script> |
| 8 <script src="../resources/audit.js"></script> | 10 <script src="../resources/audit.js"></script> |
| 9 </head> | 11 </head> |
| 10 | |
| 11 <body> | 12 <body> |
| 12 <script> | 13 <script id="layout-test-code"> |
| 13 // Sample rate and number of frames are fairly arbitrary. We need to | 14 // Sample rate and number of frames are fairly arbitrary. We need to |
| 14 // render, however, at least 384 frames. 1024 is a nice small value. | 15 // render, however, at least 384 frames. 1024 is a nice small value. |
| 15 var sampleRate = 16000; | 16 let sampleRate = 16000; |
| 16 var renderFrames = 1024; | 17 let renderFrames = 1024; |
| 17 | 18 |
| 18 var audit = Audit.createTaskRunner(); | 19 let audit = Audit.createTaskRunner(); |
| 19 | 20 |
| 20 audit.define("test copying", (task, should) => { | 21 audit.define('test copying', (task, should) => { |
| 21 // Two-channel context; channel 0 contains the test data and channel 1 | 22 // Two-channel context; channel 0 contains the test data and channel 1 |
| 22 // contains the expected result. Channel 1 has the normal WaveShaper | 23 // contains the expected result. Channel 1 has the normal WaveShaper |
| 23 // output and channel 0 has the WaveShaper output with a modified curve. | 24 // output and channel 0 has the WaveShaper output with a modified curve. |
| 24 var context = new OfflineAudioContext(2, renderFrames, sampleRate); | 25 let context = new OfflineAudioContext(2, renderFrames, sampleRate); |
| 25 | 26 |
| 26 // Just use a default oscillator as the source. Doesn't really matter | 27 // Just use a default oscillator as the source. Doesn't really matter |
| 27 // what we use. | 28 // what we use. |
| 28 var src = context.createOscillator(); | 29 let src = context.createOscillator(); |
| 29 src.type = "sawtooth"; | 30 src.type = 'sawtooth'; |
| 30 | 31 |
| 31 // Create the wave shapers: ws0 is the test shaper, and ws1 is the | 32 // Create the wave shapers: ws0 is the test shaper, and ws1 is the |
| 32 // reference wave shaper. | 33 // reference wave shaper. |
| 33 var ws0 = context.createWaveShaper(); | 34 let ws0 = context.createWaveShaper(); |
| 34 var ws1 = context.createWaveShaper(); | 35 let ws1 = context.createWaveShaper(); |
| 35 | 36 |
| 36 // Wave shaper curves. Doesn't really matter what we use as long as it | 37 // Wave shaper curves. Doesn't really matter what we use as long as it |
| 37 // modifies the input in some way. Thus, keep it simple and just invert | 38 // modifies the input in some way. Thus, keep it simple and just invert |
| 38 // the input. | 39 // the input. |
| 39 var desiredCurve = [1, 0, -1]; | 40 let desiredCurve = [1, 0, -1]; |
| 40 var curve0 = Float32Array.from(desiredCurve); | 41 let curve0 = Float32Array.from(desiredCurve); |
| 41 var curve1 = Float32Array.from(desiredCurve); | 42 let curve1 = Float32Array.from(desiredCurve); |
| 42 | 43 |
| 43 ws0.curve = curve0; | 44 ws0.curve = curve0; |
| 44 ws1.curve = curve1; | 45 ws1.curve = curve1; |
| 45 | 46 |
| 46 var merger = context.createChannelMerger(2); | 47 let merger = context.createChannelMerger(2); |
| 47 | 48 |
| 48 // Connect the graph | 49 // Connect the graph |
| 49 src.connect(ws0); | 50 src.connect(ws0); |
| 50 src.connect(ws1); | 51 src.connect(ws1); |
| 51 | 52 |
| 52 ws0.connect(merger, 0, 0); | 53 ws0.connect(merger, 0, 0); |
| 53 ws1.connect(merger, 0, 1); | 54 ws1.connect(merger, 0, 1); |
| 54 | 55 |
| 55 merger.connect(context.destination); | 56 merger.connect(context.destination); |
| 56 | 57 |
| 57 // Let the context run for a bit and then modify the curve for ws0. | 58 // Let the context run for a bit and then modify the curve for ws0. |
| 58 // Doesn't really matter what we modify the curve to as long as it's | 59 // Doesn't really matter what we modify the curve to as long as it's |
| 59 // different. | 60 // different. |
| 60 context.suspend(256 / context.sampleRate) | 61 context.suspend(256 / context.sampleRate) |
| 61 .then(function () { | 62 .then(function() { |
| 62 curve0[0] = -0.5; | 63 curve0[0] = -0.5; |
| 63 curve0[1] = 0.125; | 64 curve0[1] = 0.125; |
| 64 curve0[2] = 0.75; | 65 curve0[2] = 0.75; |
| 65 }) | 66 }) |
| 66 .then(context.resume.bind(context)); | 67 .then(context.resume.bind(context)); |
| 67 | 68 |
| 68 src.start(); | 69 src.start(); |
| 69 | 70 |
| 70 context.startRendering().then(function (renderedBuffer) { | 71 context.startRendering() |
| 71 var actual = renderedBuffer.getChannelData(0); | 72 .then(function(renderedBuffer) { |
| 72 var expected = renderedBuffer.getChannelData(1); | 73 let actual = renderedBuffer.getChannelData(0); |
| 74 let expected = renderedBuffer.getChannelData(1); |
| 73 | 75 |
| 74 // Modifying the wave shaper curve should not modify the output so the | 76 // Modifying the wave shaper curve should not modify the output so |
| 75 // outputs from the two wave shaper nodes should be exactly identical. | 77 // the outputs from the two wave shaper nodes should be exactly |
| 76 should(actual, "WaveShaper with modified curve") | 78 // identical. |
| 77 .beEqualToArray(expected); | 79 should(actual, 'WaveShaper with modified curve') |
| 80 .beEqualToArray(expected); |
| 78 | 81 |
| 79 }).then(() => task.done()); | 82 }) |
| 83 .then(() => task.done()); |
| 80 }); | 84 }); |
| 81 | 85 |
| 82 audit.run(); | 86 audit.run(); |
| 83 </script> | 87 </script> |
| 84 </body> | 88 </body> |
| 85 </html> | 89 </html> |
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Chromium Code Reviews
Issue 2895963003:
Apply layout-test-tidy to LayoutTests/webaudio (Closed)
