| Index: third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-loop-points.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-loop-points.html b/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-loop-points.html
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| index acfd67bda054543c17835610fa901334810bf559..cad88fe9a8e96502203a47e9bdfd9e9c70e17eed 100644
|
| --- a/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-loop-points.html
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| +++ b/third_party/WebKit/LayoutTests/webaudio/AudioBufferSource/audiobuffersource-loop-points.html
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| @@ -6,105 +6,115 @@ Tests that AudioBufferSourceNode supports loop-points with .loopStart and .loopE
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|
|
| <html>
|
| <head>
|
| +<script src="../../resources/testharness.js"></script>
|
| +<script src="../../resources/testharnessreport.js"></script>
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| <script src="../resources/audit-util.js"></script>
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| -<script src="../resources/audio-testing.js"></script>
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| +<script src="../resources/audit.js"></script>
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|
|
| </head>
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| <body>
|
|
|
| <script>
|
| +let audit = Audit.createTaskRunner();
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|
|
| -window.onload = init;
|
| +let sampleRate = 44100.0;
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| +let numberOfNotes = 60; // play over a 5 octave range
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| +let noteDuration = 0.025;
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| +let noteSpacing =
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| + noteDuration + 0.005; // leave 5ms of silence between each "note"
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| +let lengthInSeconds = numberOfNotes * noteSpacing;
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|
|
| -var sampleRate = 44100.0;
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| -var numberOfNotes = 60; // play over a 5 octave range
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| -var noteDuration = 0.025;
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| -var noteSpacing = noteDuration + 0.005; // leave 5ms of silence between each "note"
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| -var lengthInSeconds = numberOfNotes * noteSpacing;
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| -
|
| -var context = 0;
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| -var buffer = 0;
|
| +let context = 0;
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| +let buffer = 0;
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|
|
| function createTestBuffer(frequency, sampleRate) {
|
| - // Create a buffer containing two periods at this frequency.
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| - // The 1st half is a pure sine wave period scaled by a linear ramp from 0 -> 1.
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| - // The 2nd half of the buffer corresponds exactly to one pure sine wave period.
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| - var onePeriodDuration = 1 / frequency;
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| - var sampleFrameLength = 2 * onePeriodDuration * sampleRate;
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| + // Create a buffer containing two periods at this frequency.
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| + // The 1st half is a pure sine wave period scaled by a linear ramp from 0 ->
|
| + // 1. The 2nd half of the buffer corresponds exactly to one pure sine wave
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| + // period.
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| + let onePeriodDuration = 1 / frequency;
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| + let sampleFrameLength = 2 * onePeriodDuration * sampleRate;
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|
|
| - var audioBuffer = context.createBuffer(1, sampleFrameLength, sampleRate);
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| + let audioBuffer = context.createBuffer(1, sampleFrameLength, sampleRate);
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|
|
| - var n = audioBuffer.length;
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| - var channelData = audioBuffer.getChannelData(0);
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| + let n = audioBuffer.length;
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| + let channelData = audioBuffer.getChannelData(0);
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|
|
| - for (var i = 0; i < n; ++i) {
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| - var sample = Math.sin(frequency * 2.0*Math.PI * i / sampleRate);
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| + for (let i = 0; i < n; ++i) {
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| + let sample = Math.sin(frequency * 2.0 * Math.PI * i / sampleRate);
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|
|
| - // Linear ramp from 0 -> 1 for the first period.
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| - // Stay at 1 for the 2nd period.
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| - var scale = i < n / 2 ? i / (n / 2) : 1;
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| - sample *= scale;
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| + // Linear ramp from 0 -> 1 for the first period.
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| + // Stay at 1 for the 2nd period.
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| + let scale = i < n / 2 ? i / (n / 2) : 1;
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| + sample *= scale;
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|
|
| - channelData[i] = sample;
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| - }
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| + channelData[i] = sample;
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| + }
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|
|
| - return audioBuffer;
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| + return audioBuffer;
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| }
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|
|
| function playNote(time, duration, playbackRate) {
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| - var source = context.createBufferSource();
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| - source.buffer = buffer;
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| - source.playbackRate.value = playbackRate;
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| -
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| - var gainNode = context.createGain();
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| - source.connect(gainNode);
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| - gainNode.connect(context.destination);
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| -
|
| - // Loop the 2nd half of the buffer.
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| - // We should be able to hear any problems as glitches if the looping incorrectly indexes to
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| - // anywhere outside of the desired loop-points, since only the 2nd half is a perfect sine-wave cycle,
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| - // while the 1st half of the buffer contains a linear ramp of a sine-wave cycle.
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| - source.loop = true;
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| - source.loopStart = 0.5 * buffer.duration;
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| - source.loopEnd = buffer.duration;
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| -
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| - // Play for the given duration.
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| - source.start(time);
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| - source.stop(time + duration);
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| -
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| - // Apply a quick linear fade-out to avoid a click at the end of the note.
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| - gainNode.gain.value = 1;
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| - gainNode.gain.setValueAtTime(1, time + duration - 0.005);
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| - gainNode.gain.linearRampToValueAtTime(0, time + duration);
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| + let source = context.createBufferSource();
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| + source.buffer = buffer;
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| + source.playbackRate.value = playbackRate;
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| +
|
| + let gainNode = context.createGain();
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| + source.connect(gainNode);
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| + gainNode.connect(context.destination);
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| +
|
| + // Loop the 2nd half of the buffer.
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| + // We should be able to hear any problems as glitches if the looping
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| + // incorrectly indexes to anywhere outside of the desired loop-points, since
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| + // only the 2nd half is a perfect sine-wave cycle, while the 1st half of the
|
| + // buffer contains a linear ramp of a sine-wave cycle.
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| + source.loop = true;
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| + source.loopStart = 0.5 * buffer.duration;
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| + source.loopEnd = buffer.duration;
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| +
|
| + // Play for the given duration.
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| + source.start(time);
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| + source.stop(time + duration);
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| +
|
| + // Apply a quick linear fade-out to avoid a click at the end of the note.
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| + gainNode.gain.value = 1;
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| + gainNode.gain.setValueAtTime(1, time + duration - 0.005);
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| + gainNode.gain.linearRampToValueAtTime(0, time + duration);
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| }
|
|
|
| -function init() {
|
| - if (!window.testRunner)
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| - return;
|
| +audit.define('test', (task, should) => {
|
| + should(window.testRunner, 'window.testRunner').notBeEqualTo(undefined);
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|
|
| - // Create offline audio context.
|
| - context = new OfflineAudioContext(2, sampleRate * lengthInSeconds, sampleRate);
|
| + // Create offline audio context.
|
| + context =
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| + new OfflineAudioContext(2, sampleRate * lengthInSeconds, sampleRate);
|
|
|
| - // Create the test buffer.
|
| - // We'll loop this with the loop-points set for the 2nd half of this buffer.
|
| - buffer = createTestBuffer(440.0, sampleRate);
|
| + // Create the test buffer.
|
| + // We'll loop this with the loop-points set for the 2nd half of this buffer.
|
| + buffer = createTestBuffer(440.0, sampleRate);
|
|
|
| - // Play all the notes as a chromatic scale.
|
| - for (var i = 0; i < numberOfNotes; ++i) {
|
| - var time = i * noteSpacing;
|
| - var semitone = i - numberOfNotes/2; // start three octaves down
|
| + // Play all the notes as a chromatic scale.
|
| + for (let i = 0; i < numberOfNotes; ++i) {
|
| + let time = i * noteSpacing;
|
| + // start three octaves down
|
| + let semitone = i - numberOfNotes / 2;
|
|
|
| - // Convert from semitone to rate.
|
| - var playbackRate = Math.pow(2, semitone / 12);
|
| + // Convert from semitone to rate.
|
| + let playbackRate = Math.pow(2, semitone / 12);
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|
|
| - playNote(time, noteDuration, playbackRate);
|
| - }
|
| + playNote(time, noteDuration, playbackRate);
|
| + }
|
|
|
| - context.oncomplete = finishAudioTest;
|
| - context.startRendering();
|
| + context.oncomplete = (event) => {
|
| + finishAudioTest(event);
|
| + task.done();
|
| + };
|
|
|
| - testRunner.waitUntilDone();
|
| -}
|
| + context.startRendering();
|
| + testRunner.waitUntilDone();
|
| +});
|
| +
|
| +audit.run();
|
|
|
| </script>
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|
|
|
|
Chromium Code Reviews
Issue 2714853005:
Convert remaining AudioBufferSource tests to testharness (Closed)
