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| 1 <!doctype html> | 1 <!DOCTYPE html> |
| 2 <html> | 2 <html> |
| 3 <head> | 3 <head> |
| 4 <title>Test setTargetAtTime with timeConstant=0</title> | 4 <title> |
| 5 Test setTargetAtTime with timeConstant=0 |
| 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.js"></script> | 9 <script src="../resources/audit.js"></script> |
| 8 </head> | 10 </head> |
| 9 | |
| 10 <body> | 11 <body> |
| 11 <script> | 12 <script id="layout-test-code"> |
| 12 // Fairly arbitrary sample rate and number of frames, so choose a low | 13 // Fairly arbitrary sample rate and number of frames, so choose a low |
| 13 // sample rate, and short rendering length. | 14 // sample rate, and short rendering length. |
| 14 var sampleRate = 8000; | 15 let sampleRate = 8000; |
| 15 var renderFrames = 128; | 16 let renderFrames = 128; |
| 16 | 17 |
| 17 // Array specifying parameters for setTargetAtTime. |frame| is the frame | 18 // Array specifying parameters for setTargetAtTime. |frame| is the frame |
| 18 // (not necessarily an integer) at which setTargetAtTime starts, and | 19 // (not necessarily an integer) at which setTargetAtTime starts, and |
| 19 // |value| is the target value. Non-integral values for |frame| tests | 20 // |value| is the target value. Non-integral values for |frame| tests |
| 20 // that we started the setTargetAtTime at the right time. | 21 // that we started the setTargetAtTime at the right time. |
| 21 var targetValueInfo = [{ | 22 let targetValueInfo = [ |
| 22 frame: 10.1, | 23 {frame: 10.1, value: 0}, {frame: 20.3, value: 0.5}, |
| 23 value: 0 | 24 {frame: 100.5, value: 1} |
| 24 }, { | 25 ]; |
| 25 frame: 20.3, | |
| 26 value: 0.5 | |
| 27 }, { | |
| 28 frame: 100.5, | |
| 29 value: 1 | |
| 30 }]; | |
| 31 | 26 |
| 32 var audit = Audit.createTaskRunner(); | 27 let audit = Audit.createTaskRunner(); |
| 33 | 28 |
| 34 audit.define("timeconstant-0", (task, should) => { | 29 audit.define('timeconstant-0', (task, should) => { |
| 35 var context = new OfflineAudioContext(1, renderFrames, sampleRate); | 30 let context = new OfflineAudioContext(1, renderFrames, sampleRate); |
| 36 | 31 |
| 37 // Simple constant source for testing. | 32 // Simple constant source for testing. |
| 38 | 33 |
| 39 var src = new ConstantSourceNode(context); | 34 let src = new ConstantSourceNode(context); |
| 40 | 35 |
| 41 // We're going to automate the gain node to test setTargetAtTime. | 36 // We're going to automate the gain node to test setTargetAtTime. |
| 42 var gain = new GainNode(context, { | 37 let gain = new GainNode(context, {gain: 1}); |
| 43 gain: 1 | |
| 44 }); | |
| 45 | 38 |
| 46 src.connect(gain).connect(context.destination); | 39 src.connect(gain).connect(context.destination); |
| 47 | 40 |
| 48 for (var k = 0; k < targetValueInfo.length; ++k) { | 41 for (let k = 0; k < targetValueInfo.length; ++k) { |
| 49 gain.gain.setTargetAtTime( | 42 gain.gain.setTargetAtTime( |
| 50 targetValueInfo[k].value, | 43 targetValueInfo[k].value, |
| 51 targetValueInfo[k].frame / context.sampleRate, | 44 targetValueInfo[k].frame / context.sampleRate, 0); |
| 52 0); | |
| 53 } | 45 } |
| 54 | 46 |
| 55 src.start(); | 47 src.start(); |
| 56 | 48 |
| 57 context.startRendering().then(function (resultBuffer) { | 49 context.startRendering() |
| 58 var result = resultBuffer.getChannelData(0); | 50 .then(function(resultBuffer) { |
| 59 var success = true; | 51 let result = resultBuffer.getChannelData(0); |
| 52 let success = true; |
| 60 | 53 |
| 61 // Because the time constant is 0, the automation should instantly | 54 // Because the time constant is 0, the automation should instantly |
| 62 // jump to the target value at the start time. Verify that the output | 55 // jump to the target value at the start time. Verify that the |
| 63 // has the expected value. | 56 // output has the expected value. |
| 64 for (var k = 0; k < targetValueInfo.length; ++k) { | 57 for (let k = 0; k < targetValueInfo.length; ++k) { |
| 65 var startFrame = Math.ceil(targetValueInfo[k].frame); | 58 let startFrame = Math.ceil(targetValueInfo[k].frame); |
| 66 var endFrame = k < targetValueInfo.length - 1 ? | 59 let endFrame = k < targetValueInfo.length - 1 ? |
| 67 Math.ceil(targetValueInfo[k + 1].frame) : renderFrames; | 60 Math.ceil(targetValueInfo[k + 1].frame) : |
| 68 var value = targetValueInfo[k].value; | 61 renderFrames; |
| 62 let value = targetValueInfo[k].value; |
| 69 | 63 |
| 70 should(result.slice(startFrame, endFrame), | 64 should( |
| 71 "Output for frame [" + startFrame + ", " + endFrame + | 65 result.slice(startFrame, endFrame), |
| 72 ")") | 66 'Output for frame [' + startFrame + ', ' + endFrame + ')') |
| 73 .beConstantValueOf(value); | 67 .beConstantValueOf(value); |
| 74 } | 68 } |
| 75 | 69 |
| 76 }).then(() => task.done()); | 70 }) |
| 71 .then(() => task.done()); |
| 77 }); | 72 }); |
| 78 | 73 |
| 79 audit.run(); | 74 audit.run(); |
| 80 </script> | 75 </script> |
| 81 </body> | 76 </body> |
| 82 </html> | 77 </html> |
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Chromium Code Reviews
Issue 2895963003:
Apply layout-test-tidy to LayoutTests/webaudio (Closed)
