| Index: third_party/WebKit/LayoutTests/webaudio/realtimeanalyser-fft-scaling.html
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| diff --git a/third_party/WebKit/LayoutTests/webaudio/realtimeanalyser-fft-scaling.html b/third_party/WebKit/LayoutTests/webaudio/realtimeanalyser-fft-scaling.html
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| deleted file mode 100644
|
| index b0be9ce259184ec727dc45b42777e9583ee23dd5..0000000000000000000000000000000000000000
|
| --- a/third_party/WebKit/LayoutTests/webaudio/realtimeanalyser-fft-scaling.html
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| +++ /dev/null
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| @@ -1,134 +0,0 @@
|
| -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
| -<html>
|
| - <head>
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| - <script src="../resources/js-test.js"></script>
|
| - <script src="resources/compatibility.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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| - </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("Test scaling of FFT data for AnalyserNode");
|
| -
|
| - // The number of analysers. We have analysers from size for each of the possible sizes of 32,
|
| - // 64, 128, 256, 512, 1024 and 2048 for a total of 7.
|
| - var numberOfAnalysers = 7;
|
| - var sampleRate = 44100;
|
| - var nyquistFrequency = sampleRate / 2;
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| -
|
| - // Frequency of the sine wave test signal. Should be high enough so that we get at least one
|
| - // full cycle for the 32-point FFT. This should also be such that the frequency should be
|
| - // exactly in one of the FFT bins for each of the possible FFT sizes.
|
| - var oscFrequency = nyquistFrequency/16;
|
| -
|
| - // The actual peak values from each analyser. Useful for examining the results in Chrome.
|
| - var peakValue = new Array(numberOfAnalysers);
|
| -
|
| - // For a 0dBFS sine wave, we would expect the FFT magnitude to be 0dB as well, but the
|
| - // analyzer node applies a Blackman window (to smooth the estimate). This reduces the energy
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| - // of the signal so the FFT peak is less than 0dB. The threshold value given here was
|
| - // determined experimentally.
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| - //
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| - // See https://code.google.com/p/chromium/issues/detail?id=341596.
|
| - var peakThreshold = [-14.43, -13.56, -13.56, -13.56, -13.56, -13.56, -13.56];
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| -
|
| - var allTestsPassed = true;
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| -
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| - function checkResult(order, analyser) {
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| - return function () {
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| - var index = order - 5;
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| - var fftSize = 1 << order;
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| - var fftData = new Float32Array(fftSize);
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| - analyser.getFloatFrequencyData(fftData);
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| -
|
| - // Compute the frequency bin that should contain the peak.
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| - var expectedBin = analyser.frequencyBinCount * (oscFrequency / nyquistFrequency);
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| -
|
| - // Find the actual bin by finding the bin containing the peak.
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| - var actualBin = 0;
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| - peakValue[index] = -1000;
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| - for (k = 0; k < analyser.frequencyBinCount; ++k) {
|
| - if (fftData[k] > peakValue[index]) {
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| - actualBin = k;
|
| - peakValue[index] = fftData[k];
|
| - }
|
| - }
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| -
|
| - var success = true;
|
| -
|
| - if (actualBin == expectedBin) {
|
| - testPassed("Actual FFT peak in the expected position (" + expectedBin + ").");
|
| - } else {
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| - success = false;
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| - testFailed("Actual FFT peak (" + actualBin + ") differs from expected (" + expectedBin + ").");
|
| - }
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| -
|
| - if (peakValue[index] >= peakThreshold[index]) {
|
| - testPassed("Peak value is near " + peakThreshold[index] + " dBFS as expected.");
|
| - } else {
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| - success = false;
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| - testFailed("Peak value of " + peakValue[index]
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| - + " is incorrect. (Expected approximately "
|
| - + peakThreshold[index] + ").");
|
| - }
|
| -
|
| - if (success) {
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| - testPassed("Analyser correctly scaled FFT data of size " + fftSize);
|
| - } else {
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| - testFailed("Analyser incorrectly scaled FFT data of size " + fftSize);
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| - }
|
| - allTestsPassed = allTestsPassed && success;
|
| -
|
| - if (fftSize == 2048) {
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| - if (allTestsPassed) {
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| - testPassed("All Analyser tests passed.");
|
| - } else {
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| - testFailed("At least one Analyser test failed.");
|
| - }
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| -
|
| - finishJSTest();
|
| - }
|
| - }
|
| - }
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| -
|
| - function runTests() {
|
| - if (window.testRunner) {
|
| - testRunner.dumpAsText();
|
| - testRunner.waitUntilDone();
|
| - }
|
| -
|
| - window.jsTestIsAsync = true;
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| -
|
| - // Test each analyser size from order 5 (size 32) to 11 (size 2048).
|
| - for (order = 5; order < 12; ++order) {
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| - // Create a new offline context for each analyser test with the number of samples
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| - // exactly equal to the fft size. This ensures that the analyser node gets the
|
| - // expected data from the oscillator.
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| - var context = new OfflineAudioContext(1, 1 << order, sampleRate);
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| - // Use a sine wave oscillator as the reference source signal.
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| - var osc = context.createOscillator();
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| - osc.type = "sine";
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| - osc.frequency.value = oscFrequency;
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| - osc.connect(context.destination);
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| -
|
| - var analyser = context.createAnalyser();
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| - // No smoothing to simplify the analysis of the result.
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| - analyser.smoothingTimeConstant = 0;
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| - analyser.fftSize = 1 << order;
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| - osc.connect(analyser);
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| -
|
| - osc.start();
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| - context.oncomplete = checkResult(order, analyser);
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| - context.startRendering();
|
| - }
|
| - }
|
| -
|
| - runTests();
|
| - successfullyParsed = true;
|
| - </script>
|
| - </body>
|
| -</html>
|
|
|
Chromium Code Reviews
Issue 2581463002:
Refactor WebAudio test directory (Closed)
