| Index: third_party/WebKit/LayoutTests/webaudio/audiobuffer-resample.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/audiobuffer-resample.html b/third_party/WebKit/LayoutTests/webaudio/audiobuffer-resample.html
|
| deleted file mode 100644
|
| index 7abea8d4ceb4fee90aefd7c44b483abfd6d96ec1..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/LayoutTests/webaudio/audiobuffer-resample.html
|
| +++ /dev/null
|
| @@ -1,141 +0,0 @@
|
| -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
| -<html>
|
| - <head>
|
| - <script src="../resources/js-test.js"></script>
|
| - <script src="resources/compatibility.js"></script>
|
| - <script src="resources/audit-util.js"></script>
|
| - <script src="resources/audio-testing.js"></script>
|
| - </head>
|
| -
|
| - <body>
|
| - <div id="description"></div>
|
| - <div id="console"></div>
|
| -
|
| - <script>
|
| - // These are global to make debugging a little easier.
|
| - var context;
|
| - var buffer;
|
| - var source;
|
| - var renderedData;
|
| - var trueData;
|
| - var signalEnergy;
|
| - var noiseEnergy;
|
| - var maxError;
|
| -
|
| - // Context sample rate.
|
| - var sampleRate = 48000;
|
| - // The sample rate of the buffer.
|
| - var bufferRate = 3000;
|
| - // The audio buffer is a sine wave of this frequency.
|
| - var toneFrequency = 440;
|
| - // How long test is
|
| - var lengthInSeconds = 0.5;
|
| - // The maximum allowed peak error between the actual and true output. This value was
|
| - // experimentally determined for the given bufferRate.
|
| - var peakThreshold = 0.11;
|
| - // The minimum SNR allowed between the actual and true output.
|
| - var snrThreshold = 22.35;
|
| -
|
| - description("Test resampling of an AudioBuffer at " + bufferRate + " Hz");
|
| -
|
| - function log10(x) {
|
| - return Math.log(x)/Math.LN10;
|
| - }
|
| -
|
| - // Generate a sine wave in an AudioBuffer using the given |freq|. The AudioBuffer has the
|
| - // sample rate of |rate|.
|
| - function createSineBuffer(context, freq, rate) {
|
| - var buf = context.createBuffer(1, lengthInSeconds * rate, rate);
|
| - var omega = 2 * Math.PI * freq / rate;
|
| - var signal = buf.getChannelData(0);
|
| - var length = signal.length;
|
| - for (var k = 0; k < length; ++k)
|
| - signal[k] = Math.sin(omega * k);
|
| -
|
| - return buf;
|
| - }
|
| -
|
| - // Check the output against the expected output.
|
| - function checkResult(event) {
|
| - renderedData = event.renderedBuffer.getChannelData(0);
|
| - var length = renderedData.length;
|
| - // Generate a reference sine wave at the context rate
|
| - var trueReference = createSineBuffer(context, toneFrequency, context.sampleRate);
|
| - trueData = trueReference.getChannelData(0);
|
| -
|
| - // To compare the actual output against the reference, we compute the peak error and the
|
| - // SNR between the two.
|
| - signalEnergy = 0;
|
| - noiseEnergy = 0;
|
| - maxError = -1;
|
| -
|
| - var success = true;
|
| -
|
| - // Compute the peak error and the SNR.
|
| - for (var k = 0; k < length / 2; ++k) {
|
| - var diff = renderedData[k] - trueData[k];
|
| - noiseEnergy += diff * diff;
|
| - signalEnergy += trueData[k] * trueData[k];
|
| - if (Math.abs(diff) > maxError)
|
| - maxError = Math.abs(diff);
|
| - }
|
| -
|
| - var snr;
|
| -
|
| - if (noiseEnergy == 0)
|
| - snr = 1000;
|
| - else
|
| - snr = 10 * log10(signalEnergy / noiseEnergy);
|
| -
|
| - if (maxError < peakThreshold) {
|
| - testPassed("Peak error between actual and reference data below threshold of " +
|
| - peakThreshold + ".");
|
| - } else {
|
| - testFailed("Peak error of " + maxError + " exceeds threshold of " +
|
| - peakThreshold + ".");
|
| - success = false;
|
| - }
|
| -
|
| - if (snr > snrThreshold) {
|
| - testPassed("SNR exceeds threshold of " + snrThreshold + " dB.");
|
| - } else {
|
| - testFailed("SNR of " + snr + " is below the threshold of " + snrThreshold + ".");
|
| - success = false;
|
| - }
|
| -
|
| - if (success)
|
| - testPassed("AudioBuffer resampling is accurate for buffer rate of " +
|
| - bufferRate + " Hz.");
|
| - else
|
| - testFailed("AudioBuffer resampling is not accurate enough for buffer rate of " +
|
| - bufferRate + " Hz.");
|
| -
|
| - finishJSTest();
|
| - }
|
| -
|
| - function runTest() {
|
| - if (window.testRunner) {
|
| - testRunner.dumpAsText();
|
| - testRunner.waitUntilDone();
|
| - }
|
| -
|
| - window.jsTestIsAsync = true;
|
| -
|
| - context = new OfflineAudioContext(1, lengthInSeconds * sampleRate, sampleRate);
|
| -
|
| - // Create a sine wave in a buffer that's different from the context rate to test
|
| - // resampling.
|
| - buffer = createSineBuffer(context, toneFrequency, bufferRate);
|
| - source = context.createBufferSource();
|
| - source.buffer = buffer;
|
| - source.connect(context.destination);
|
| - source.start();
|
| -
|
| - context.oncomplete = checkResult;
|
| - context.startRendering();
|
| - }
|
| - runTest();
|
| - successfullyParsed = true;
|
| - </script>
|
| - </body>
|
| -</html>
|
|
|
Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
