third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html - Issue 2597723002: Convert audiobuffer-resample to testharness

Unified Diff: third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html

Issue 2597723002: Convert audiobuffer-resample to testharness (Closed)

Patch Set: Address review comments. Created 3 years, 11 months ago

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Index: third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html

diff --git a/third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html b/third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html

index d45aa6cd78aa1c4a3cc787418641ef178cd519bd..ce6dfc4c540b09471ea47e42ac38bf156be8cae9 100644

--- a/third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html

+++ b/third_party/WebKit/LayoutTests/webaudio/AudioBuffer/audiobuffer-resample.html

@@ -1,140 +1,115 @@

-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

+<!doctype>

<html>

<head>

- <script src="../../resources/js-test.js"></script>

+ <script src="../../resources/testharness.js"></script>

+ <script src="../../resources/testharnessreport.js"></script>

- <script src="../resources/audio-testing.js"></script>

+ <script src="../resources/audit.js"></script>

</head>

<body>

- <div id="description"></div>

- <div id="console"></div>

+ let audit = Audit.createTaskRunner();

// 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;

+ let context;

+ let buffer;

+ let source;

+ let renderedData;

+ let trueData;

+ let signalEnergy;

+ let noiseEnergy;

+ let maxError;

// Context sample rate.

- var sampleRate = 48000;

+ let sampleRate = 48000;

// The sample rate of the buffer.

- var bufferRate = 3000;

+ let bufferRate = 3000;

// The audio buffer is a sine wave of this frequency.

- var toneFrequency = 440;

+ let 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;

+ let lengthInSeconds = 0.5;

+ // The maximum allowed peak error between the actual and true output. This

+ // value was experimentally determined for the given bufferRate.

+ let peakThreshold = 0.11;

// The minimum SNR allowed between the actual and true output.

- var snrThreshold = 22.35;

+ let 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|.

+ // 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;

+ let buf = context.createBuffer(1, lengthInSeconds * rate, rate);

+ let omega = 2 * Math.PI * freq / rate;

+ let signal = buf.getChannelData(0);

+ let length = signal.length;

+ for (let 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 checkResult(buffer, should) {

+ renderedData = buffer.getChannelData(0);

+ let length = renderedData.length;

+ // Generate a reference sine wave at the context rate

+ let 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;

+ let success = true;

+ // Compute the peak error and the SNR.

+ for (let k = 0; k < length / 2; ++k) {

+ let diff = renderedData[k] - trueData[k];

+ noiseEnergy += diff * diff;

+ signalEnergy += trueData[k] * trueData[k];

+ if (Math.abs(diff) > maxError)

+ maxError = Math.abs(diff);

+ }

+ let snr;

+ if (noiseEnergy == 0)

+ snr = 1000;

+ else

+ snr = 10 * Math.log10(signalEnergy / noiseEnergy);

+ should(maxError, "Peak error between actual and reference data")

+ .beLessThan(peakThreshold);

+ should(snr, "SNR")

+ .beGreaterThan(snrThreshold);

}

- function runTest() {

- if (window.testRunner) {

- testRunner.dumpAsText();

- testRunner.waitUntilDone();

- }

- window.jsTestIsAsync = true;

+ audit.define("Test resampling of an AudioBuffer",

+ function(task, should) {

+ context = new OfflineAudioContext(1, lengthInSeconds *

+ sampleRate,

+ sampleRate);

- context = new OfflineAudioContext(1, lengthInSeconds * sampleRate, sampleRate);

- // Create a sine wave in a buffer that's different from the context rate to test

- // resampling.

+ // 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;

+ context.startRendering()

+ .then(function(buffer) {

+ checkResult(buffer, should);

+ })

+ .then(task.done.bind(task));

+ });

+ audit.run();

</script>

</body>

</html>

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