| Index: third_party/WebKit/LayoutTests/webaudio/audiobuffersource-loop-points.html
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| diff --git a/third_party/WebKit/LayoutTests/webaudio/audiobuffersource-loop-points.html b/third_party/WebKit/LayoutTests/webaudio/audiobuffersource-loop-points.html
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| deleted file mode 100644
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| index 7e066f81008335ce3f52ee3b0738dc6bd56e16ea..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/LayoutTests/webaudio/audiobuffersource-loop-points.html
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| +++ /dev/null
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| @@ -1,112 +0,0 @@
|
| -<!DOCTYPE html>
|
| -
|
| -<!--
|
| -Tests that AudioBufferSourceNode supports loop-points with .loopStart and .loopEnd.
|
| --->
|
| -
|
| -<html>
|
| -<head>
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| -<script src="resources/audit-util.js"></script>
|
| -<script src="resources/audio-testing.js"></script>
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| -
|
| -</head>
|
| -<body>
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| -
|
| -<script>
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| -
|
| -window.onload = init;
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| -
|
| -var sampleRate = 44100.0;
|
| -var numberOfNotes = 60; // play over a 5 octave range
|
| -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;
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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.
|
| - var onePeriodDuration = 1 / frequency;
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| - var sampleFrameLength = 2 * onePeriodDuration * sampleRate;
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| -
|
| - var 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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| -
|
| - 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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| -
|
| - // 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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| -
|
| - channelData[i] = sample;
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| - }
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| -
|
| - return audioBuffer;
|
| -}
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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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| -
|
| - 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.
|
| - source.loop = true;
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| - source.loopStart = 0.5 * buffer.duration;
|
| - source.loopEnd = buffer.duration;
|
| -
|
| - // 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);
|
| -}
|
| -
|
| -function init() {
|
| - if (!window.testRunner)
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| - return;
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| -
|
| - // Create offline audio context.
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| - context = new OfflineAudioContext(2, sampleRate * lengthInSeconds, sampleRate);
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| -
|
| - // Create the test buffer.
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| - // We'll loop this with the loop-points set for the 2nd half of this buffer.
|
| - buffer = createTestBuffer(440.0, sampleRate);
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| -
|
| - // Play all the notes as a chromatic scale.
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| - for (var i = 0; i < numberOfNotes; ++i) {
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| - var time = i * noteSpacing;
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| - var semitone = i - numberOfNotes/2; // start three octaves down
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| -
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| - // Convert from semitone to rate.
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| - var playbackRate = Math.pow(2, semitone / 12);
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| -
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| - playNote(time, noteDuration, playbackRate);
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| - }
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| -
|
| - context.oncomplete = finishAudioTest;
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| - context.startRendering();
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| -
|
| - testRunner.waitUntilDone();
|
| -}
|
| -
|
| -</script>
|
| -
|
| -</body>
|
| -</html>
|
|
|
Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
