| Index: third_party/WebKit/LayoutTests/webaudio/waveshaper.html
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| diff --git a/third_party/WebKit/LayoutTests/webaudio/waveshaper.html b/third_party/WebKit/LayoutTests/webaudio/waveshaper.html
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| deleted file mode 100644
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| index 5be96b03eef1f6d7ede7b6bbedb8560386064458..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/LayoutTests/webaudio/waveshaper.html
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| +++ /dev/null
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| @@ -1,139 +0,0 @@
|
| -<!DOCTYPE html>
|
| -
|
| -<html>
|
| -<head>
|
| -<script src="../resources/js-test.js"></script>
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| -<script src="resources/compatibility.js"></script>
|
| -<script src="resources/audit-util.js"></script>
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| -<script src="resources/audio-testing.js"></script>
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| -<script type="text/javascript" src="resources/buffer-loader.js"></script>
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| -</head>
|
| -
|
| -<body>
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| -
|
| -<div id="description"></div>
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| -<div id="console"></div>
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| -
|
| -<script>
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| -description("Tests that WaveShaperNode applies proper non-linear distortion.");
|
| -
|
| -var sampleRate = 44100;
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| -var lengthInSeconds = 4;
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| -var numberOfRenderFrames = sampleRate * lengthInSeconds;
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| -var numberOfCurveFrames = 65536;
|
| -var inputBuffer;
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| -var waveShapingCurve;
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| -
|
| -var context;
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| -
|
| -function generateInputBuffer() {
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| - // Create mono input buffer.
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| - var buffer = context.createBuffer(1, numberOfRenderFrames, context.sampleRate);
|
| - var data = buffer.getChannelData(0);
|
| -
|
| - // Generate an input vector with values from -1 -> +1 over a duration of lengthInSeconds.
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| - // This exercises the full nominal input range and will touch every point of the shaping curve.
|
| - for (var i = 0; i < numberOfRenderFrames; ++i) {
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| - var x = i / numberOfRenderFrames; // 0 -> 1
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| - x = 2 * x - 1; // -1 -> +1
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| - data[i] = x;
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| - }
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| -
|
| - return buffer;
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| -}
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| -
|
| -// Generates a symmetric curve: Math.atan(5 * x) / (0.5 * Math.PI)
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| -// (with x == 0 corresponding to the center of the array)
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| -// This curve is arbitrary, but would be useful in the real-world.
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| -// To some extent, the actual curve we choose is not important in this test,
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| -// since the input vector walks through all possible curve values.
|
| -function generateWaveShapingCurve() {
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| - var curve = new Float32Array(numberOfCurveFrames);
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| -
|
| - var n = numberOfCurveFrames;
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| - var n2 = n / 2;
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| -
|
| - for (var i = 0; i < n; ++i) {
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| - var x = (i - n2) / n2;
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| - var y = Math.atan(5 * x) / (0.5 * Math.PI);
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| - }
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| -
|
| - return curve;
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| -}
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| -
|
| -function checkShapedCurve(event) {
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| - var buffer = event.renderedBuffer;
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| -
|
| - var inputData = inputBuffer.getChannelData(0);
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| - var outputData = buffer.getChannelData(0);
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| -
|
| - var success = true;
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| -
|
| - // Go through every sample and make sure it has been shaped exactly according to the shaping curve we gave it.
|
| - for (var i = 0; i < buffer.length; ++i) {
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| - var input = inputData[i];
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| -
|
| - // Calculate an index based on input -1 -> +1 with 0 being at the center of the curve data.
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| - var index = Math.floor(numberOfCurveFrames * 0.5 * (input + 1));
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| -
|
| - // Clip index to the input range of the curve.
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| - // This takes care of input outside of nominal range -1 -> +1
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| - index = index < 0 ? 0 : index;
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| - index = index > numberOfCurveFrames - 1 ? numberOfCurveFrames - 1 : index;
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| -
|
| - var expectedOutput = waveShapingCurve[index];
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| -
|
| - var output = outputData[i];
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| -
|
| - if (output != expectedOutput) {
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| - success = false;
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| - break;
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| - }
|
| - }
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| -
|
| - if (success) {
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| - testPassed("WaveShaperNode properly applied non-linear distortion.");
|
| - } else {
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| - testFailed("WaveShaperNode did not properly apply non-linear distortion.");
|
| - }
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| -
|
| - finishJSTest();
|
| -}
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| -
|
| -function runTest() {
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| - if (window.testRunner) {
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| - testRunner.dumpAsText();
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| - testRunner.waitUntilDone();
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| - }
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| -
|
| - window.jsTestIsAsync = true;
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| -
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| - // Create offline audio context.
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| - context = new OfflineAudioContext(1, numberOfRenderFrames, sampleRate);
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| -
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| - // source -> waveshaper -> destination
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| - var source = context.createBufferSource();
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| - var waveshaper = context.createWaveShaper();
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| - source.connect(waveshaper);
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| - waveshaper.connect(context.destination);
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| -
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| - // Create an input test vector.
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| - inputBuffer = generateInputBuffer();
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| - source.buffer = inputBuffer;
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| -
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| - // We'll apply non-linear distortion according to this shaping curve.
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| - waveShapingCurve = generateWaveShapingCurve();
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| - waveshaper.curve = waveShapingCurve;
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| -
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| - source.start(0);
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| -
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| - context.oncomplete = checkShapedCurve;
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| - context.startRendering();
|
| -}
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| -
|
| -runTest();
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| -
|
| -</script>
|
| -
|
| -</body>
|
| -</html>
|
|
|
Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
