зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1498428 [wpt PR 13475] - Allow reusing AudioBuffers, a=testonly
Automatic update from web-platform-testsAdd test to check that AudioBuffers can be reused between AudioBufferSourceNodes -- Merge pull request #13475 from servo-wpt-sync/servo_export_21910 Allow reusing AudioBuffers -- wpt-commits: bf21a9f3a4768fe904591741aefd3bf875d95c4e, d647a1bc742a533186d8297cae2a2bee669c7780 wpt-pr: 13475
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<!doctype html>
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<meta charset="utf-8">
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<title>AudioBuffer can be reused between AudioBufferSourceNodes</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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function render_audio_context() {
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let sampleRate = 44100;
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let context = new OfflineAudioContext(
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2, sampleRate * 0.1, sampleRate);
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let buf = context.createBuffer(1, 0.1 * sampleRate, context.sampleRate);
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let data = buf.getChannelData(0);
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data[0] = 0.5;
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data[1] = 0.25;
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let b1 = context.createBufferSource();
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b1.buffer = buf;
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b1.start();
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let b2 = context.createBufferSource();
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b2.buffer = buf;
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b2.start();
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let merger = context.createChannelMerger(2);
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b1.connect(merger, 0, 0);
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b2.connect(merger, 0, 1);
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merger.connect(context.destination);
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return context.startRendering();
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}
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promise_test(function() {
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return render_audio_context()
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.then(function(buffer) {
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assert_equals(buffer.getChannelData(0)[0], 0.5);
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assert_equals(buffer.getChannelData(1)[0], 0.5);
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assert_equals(buffer.getChannelData(0)[1], 0.25);
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assert_equals(buffer.getChannelData(1)[1], 0.25);
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});
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}, "AudioBuffer can be reused between AudioBufferSourceNodes");
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</script>
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