| Index: third_party/WebKit/LayoutTests/webaudio/mixing.html
|
| diff --git a/third_party/WebKit/LayoutTests/webaudio/mixing.html b/third_party/WebKit/LayoutTests/webaudio/mixing.html
|
| index 1d041491d6bcf0e926b0547fedaaaf7332282dfe..6c7967cb046c79f43b7ec0b714625f7e05403ff3 100644
|
| --- a/third_party/WebKit/LayoutTests/webaudio/mixing.html
|
| +++ b/third_party/WebKit/LayoutTests/webaudio/mixing.html
|
| @@ -7,59 +7,126 @@ The result should be some laughing playing at the same time as the drumming.
|
|
|
| <html>
|
| <head>
|
| +<script src="../resources/testharness.js"></script>
|
| +<script src="../resources/testharnessreport.js"></script>
|
| <script src="resources/audit-util.js"></script>
|
| -<script src="resources/audio-testing.js"></script>
|
| -<script type="text/javascript" src="resources/buffer-loader.js"></script>
|
| -
|
| +<script src="resources/audit.js"></script>
|
| </head>
|
| <body>
|
|
|
| <script>
|
| +let audit = Audit.createTaskRunner();
|
|
|
| -window.onload = init;
|
| -
|
| -var sampleRate = 44100.0;
|
| -var lengthInSeconds = 2;
|
| -
|
| -var context = 0;
|
| -var bufferLoader = 0;
|
| -
|
| -function init() {
|
| - if (!window.testRunner)
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| - return;
|
| -
|
| - // Create offline audio context.
|
| - context = new OfflineAudioContext(2, sampleRate * lengthInSeconds, sampleRate);
|
| -
|
| - bufferLoader = new BufferLoader(
|
| - context,
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| - [
|
| - "resources/hyper-reality/br-jam-loop.wav",
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| - "resources/hyper-reality/laughter.wav",
|
| - ],
|
| - finishedLoading
|
| - );
|
| -
|
| - bufferLoader.load();
|
| - testRunner.waitUntilDone();
|
| -}
|
| +let sampleRate = 44100.0;
|
| +let lengthInSeconds = 2;
|
| +
|
| +audit.define('test', (task, should) => {
|
| + // Create offline audio context.
|
| + let context =
|
| + new OfflineAudioContext(2, sampleRate * lengthInSeconds, sampleRate);
|
| +
|
| + // Load up audio files and test
|
| + Promise
|
| + .all([
|
| + // This file is stereo
|
| + Audit.loadFileFromUrl('resources/hyper-reality/br-jam-loop.wav')
|
| + .then(response => { return context.decodeAudioData(response); }),
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| + // This file is mono
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| + Audit.loadFileFromUrl('resources/hyper-reality/laughter.wav')
|
| + .then(response => { return context.decodeAudioData(response); }),
|
| + ])
|
| + .then(audioBuffers => {
|
| + // Thresholds are experimentally determined
|
| + return runTest(context, audioBuffers, should, [
|
| + {snrThreshold: Infinity, errorThreshold: 0},
|
| + {snrThreshold: Infinity, errorThreshold: 0}
|
| + ]);
|
| + })
|
| + .then(() => task.done());
|
| +});
|
| +
|
| +audit.run();
|
| +
|
| +function runTest(context, bufferList, should, testThresholds) {
|
| + should(bufferList.length, 'Number of decoded files').beEqualTo(2);
|
| +
|
| + // Create two sources and play them at the same time.
|
| + let source1 = context.createBufferSource();
|
| + let source2 = context.createBufferSource();
|
| + source1.buffer = bufferList[0];
|
| + source2.buffer = bufferList[1];
|
| +
|
| + source1.connect(context.destination);
|
| + source2.connect(context.destination);
|
| + source1.start(0);
|
| + source2.start(0);
|
| +
|
| + // Verify the number of channels in each source and the expected result.
|
| + should(bufferList[0].numberOfChannels, 'Number of channels in stereo source')
|
| + .beEqualTo(2);
|
|
|
| -function finishedLoading(bufferList) {
|
| - // Create two sources and play them at the same time.
|
| - var source1 = context.createBufferSource();
|
| - var source2 = context.createBufferSource();
|
| - source1.buffer = bufferList[0];
|
| - source2.buffer = bufferList[1];
|
| -
|
| - source1.connect(context.destination);
|
| - source2.connect(context.destination);
|
| - source1.start(0);
|
| - source2.start(0);
|
| -
|
| - context.oncomplete = finishAudioTest;
|
| - context.startRendering();
|
| + should(bufferList[1].numberOfChannels, 'Number of channels in mono source')
|
| + .beEqualTo(1);
|
| +
|
| + return context.startRendering().then(verifyResult);
|
| }
|
|
|
| +function verifyResult(renderedBuffer) {
|
| + // Test only works if we have a stereo result.
|
| + should(
|
| + renderedBuffer.numberOfChannels, 'Number of channels in rendered output')
|
| + .beEqualTo(2);
|
| +
|
| + // Note: the source lengths may not match the context length. Create copies
|
| + // of the sources truncated or zero-filled to the rendering length.
|
| +
|
| + let stereoSource = new AudioBuffer({
|
| + length: renderedBuffer.length,
|
| + numberOfChannels: 2,
|
| + sampleRate: context.sampleRate
|
| + });
|
| + stereoSource.copyToChannel(bufferList[0].getChannelData(0), 0);
|
| + stereoSource.copyToChannel(bufferList[0].getChannelData(1), 1);
|
| +
|
| + let monoSource = new AudioBuffer({
|
| + length: renderedBuffer.length,
|
| + numberOfChannels: 1,
|
| + sampleRate: context.sampleRate
|
| + });
|
| + monoSource.copyToChannel(bufferList[1].getChannelData(0), 0);
|
| +
|
| + // Compute the expected result buffer0 is stereo and buffer1 is mono. The
|
| + // result should be stereo, with the mono source implicitly upmixed to
|
| + // stereo to produce the expected result.
|
| + let expectedBuffer = new AudioBuffer({
|
| + length: renderedBuffer.length,
|
| + numberOfChannels: 2,
|
| + sampleRate: context.sampleRate
|
| + });
|
| +
|
| + let monoData = monoSource.getChannelData(0);
|
| + for (let c = 0; c < expectedBuffer.numberOfChannels; ++c) {
|
| + let expectedData = expectedBuffer.getChannelData(c);
|
| + let stereoData = stereoSource.getChannelData(c);
|
| + for (let k = 0; k < expectedBuffer.length; ++k) {
|
| + expectedData[k] = stereoData[k] + monoData[k];
|
| + }
|
| + }
|
| +
|
| + // Compare the rendered data with the expected data for each channel.
|
| + for (let k = 0; k < renderedBuffer.numberOfChannels; ++k) {
|
| + let actualData = renderedBuffer.getChannelData(k);
|
| + let expectedData = expectedBuffer.getChannelData(k);
|
| + let threshold = testThresholds[k];
|
| + let snr = 10 * Math.log10(computeSNR(actualData, expectedData));
|
| +
|
| + should(snr, 'SNR for channel ' + k)
|
| + .beGreaterThanOrEqualTo(threshold.snrThreshold);
|
| + should(actualData, 'Rendered audio').beCloseToArray(expectedData, {
|
| + absoluteThreshold: threshold.errorThreshold
|
| + });
|
| + }
|
| +}
|
| </script>
|
|
|
| </body>
|
|
|
Chromium Code Reviews
Issue 2707433003:
Convert mixing.html test to testharness. (Closed)
