| Index: third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-playbackrate-modulated-impulse.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-playbackrate-modulated-impulse.html b/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-playbackrate-modulated-impulse.html
|
| index 632addb74d1635f0b080dd2fa7b7b90c2f9580df..2f35bb05fadad272390ec5f5e6f28826b2525718 100644
|
| --- a/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-playbackrate-modulated-impulse.html
|
| +++ b/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-playbackrate-modulated-impulse.html
|
| @@ -1,103 +1,106 @@
|
| <!DOCTYPE html>
|
| <html>
|
| -
|
| -<head>
|
| - <script src="../../resources/testharness.js"></script>
|
| - <script src="../../resources/testharnessreport.js"></script>
|
| - <script src="../resources/audit-util.js"></script>
|
| - <script src="../resources/audit.js"></script>
|
| -</head>
|
| -
|
| -<body>
|
| - <script>
|
| -
|
| - var sampleRate = 44100;
|
| -
|
| - // To get an observable change on playbackRate modulation, the minimum
|
| - // rendering length should greater than the rendering quantum.
|
| - var renderLength = 256;
|
| - var half = renderLength / 2;
|
| -
|
| - // With the playbackRate of 1, the duration of impulse buffer should be 4
|
| - // samples (which means the interval between impulses is 4). Doubling
|
| - // playback speed decrease the interval to 2 samples.
|
| - var impulseLength = 4;
|
| -
|
| - var context = new OfflineAudioContext(1, renderLength, sampleRate);
|
| - var impulseBuffer, dcOffsetBuffer;
|
| -
|
| - var audit = Audit.createTaskRunner();
|
| -
|
| -
|
| - // Task: build an impulse and DC-offset buffers for testing.
|
| - audit.define('build-buffers', (task, should) => {
|
| - should(() => {
|
| + <head>
|
| + <title>
|
| + audiobuffersource-playbackrate-modulated-impulse.html
|
| + </title>
|
| + <script src="../../resources/testharness.js"></script>
|
| + <script src="../../resources/testharnessreport.js"></script>
|
| + <script src="../resources/audit-util.js"></script>
|
| + <script src="../resources/audit.js"></script>
|
| + </head>
|
| + <body>
|
| + <script id="layout-test-code">
|
| + let sampleRate = 44100;
|
| +
|
| + // To get an observable change on playbackRate modulation, the minimum
|
| + // rendering length should greater than the rendering quantum.
|
| + let renderLength = 256;
|
| + let half = renderLength / 2;
|
| +
|
| + // With the playbackRate of 1, the duration of impulse buffer should be 4
|
| + // samples (which means the interval between impulses is 4). Doubling
|
| + // playback speed decrease the interval to 2 samples.
|
| + let impulseLength = 4;
|
| +
|
| + let context = new OfflineAudioContext(1, renderLength, sampleRate);
|
| + let impulseBuffer, dcOffsetBuffer;
|
| +
|
| + let audit = Audit.createTaskRunner();
|
| +
|
| +
|
| + // Task: build an impulse and DC-offset buffers for testing.
|
| + audit.define('build-buffers', (task, should) => {
|
| + should(() => {
|
| // 4-sample impulse sample.
|
| impulseBuffer = createImpulseBuffer(context, impulseLength);
|
|
|
| // Create a DC offset buffer with 2 values [0, 1] for modulating
|
| // playbackRate. The first half of buffer is 0 and the rest is 1.
|
| dcOffsetBuffer = context.createBuffer(1, renderLength, sampleRate);
|
| - var dcOffsetArray = dcOffsetBuffer.getChannelData(0);
|
| + let dcOffsetArray = dcOffsetBuffer.getChannelData(0);
|
| for (i = 0; i < dcOffsetArray.length; i++) {
|
| -
|
| - // Note that these values will be added to the playbackRate AudioParam
|
| - // value. For example, 0 DC offset value will result playbackRate of 1
|
| - // because the default playbackRate value is 1.
|
| + // Note that these values will be added to the playbackRate
|
| + // AudioParam value. For example, 0 DC offset value will result
|
| + // playbackRate of 1 because the default playbackRate value is 1.
|
| dcOffsetArray[i] = i < half ? 0 : 1;
|
| }
|
| - }, "Build buffers")
|
| - .notThrow();
|
| -
|
| - task.done();
|
| - });
|
| -
|
| -
|
| - // Task: Render the actual buffer and compare with the reference.
|
| - audit.define('synthesize-verify', (task, should) => {
|
| - var impulse = context.createBufferSource();
|
| - var dcOffset = context.createBufferSource();
|
| -
|
| - impulse.buffer = impulseBuffer;
|
| - dcOffset.buffer = dcOffsetBuffer;
|
| - impulse.loop = true;
|
| -
|
| - impulse.connect(context.destination);
|
| - dcOffset.connect(impulse.playbackRate);
|
| -
|
| - impulse.start();
|
| - dcOffset.start();
|
| -
|
| - context.startRendering().then(function (renderedBuffer) {
|
| - var data = renderedBuffer.getChannelData(0);
|
| - var passed = true, i = 0;
|
| - var nextImpulseIndex = 0;
|
| -
|
| - while (i < renderLength) {
|
| - if (i === nextImpulseIndex && data[i] === 1) {
|
| - // From 0 to 127th element, the interval between impulses is 4. On the other
|
| - // hand, the interval is 2 between 128th and 255th element.
|
| - nextImpulseIndex += (i < half) ? impulseLength : impulseLength / 2;
|
| - } else if (data[i] !== 0) {
|
| - // If a value is neither 0 or 1, break the loop and fail the test.
|
| - passed = false;
|
| - break;
|
| - }
|
| -
|
| - i++;
|
| - }
|
| -
|
| - should(passed, 'Doubling playbackRate')
|
| - .message(
|
| - 'decreased the interval between impulses to half',
|
| - 'produced the incorrect result' + 'at the index ' + i)
|
| - }).then(() => task.done());
|
| - });
|
| -
|
| - audit.run();
|
| -
|
| - successfullyParsed = true;
|
| - </script>
|
| -</body>
|
| -
|
| + }, 'Build buffers').notThrow();
|
| +
|
| + task.done();
|
| + });
|
| +
|
| +
|
| + // Task: Render the actual buffer and compare with the reference.
|
| + audit.define('synthesize-verify', (task, should) => {
|
| + let impulse = context.createBufferSource();
|
| + let dcOffset = context.createBufferSource();
|
| +
|
| + impulse.buffer = impulseBuffer;
|
| + dcOffset.buffer = dcOffsetBuffer;
|
| + impulse.loop = true;
|
| +
|
| + impulse.connect(context.destination);
|
| + dcOffset.connect(impulse.playbackRate);
|
| +
|
| + impulse.start();
|
| + dcOffset.start();
|
| +
|
| + context.startRendering()
|
| + .then(function(renderedBuffer) {
|
| + let data = renderedBuffer.getChannelData(0);
|
| + let passed = true, i = 0;
|
| + let nextImpulseIndex = 0;
|
| +
|
| + while (i < renderLength) {
|
| + if (i === nextImpulseIndex && data[i] === 1) {
|
| + // From 0 to 127th element, the interval between impulses is
|
| + // 4. On the other hand, the interval is 2 between 128th and
|
| + // 255th element.
|
| + nextImpulseIndex +=
|
| + (i < half) ? impulseLength : impulseLength / 2;
|
| + } else if (data[i] !== 0) {
|
| + // If a value is neither 0 or 1, break the loop and fail the
|
| + // test.
|
| + passed = false;
|
| + break;
|
| + }
|
| +
|
| + i++;
|
| + }
|
| +
|
| + should(passed, 'Doubling playbackRate')
|
| + .message(
|
| + 'decreased the interval between impulses to half',
|
| + 'produced the incorrect result' +
|
| + 'at the index ' + i)
|
| + })
|
| + .then(() => task.done());
|
| + });
|
| +
|
| + audit.run();
|
| +
|
| + successfullyParsed = true;
|
| + </script>
|
| + </body>
|
| </html>
|
|
|
Chromium Code Reviews
Issue 2895963003:
Apply layout-test-tidy to LayoutTests/webaudio (Closed)
