зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1431810 - Test that opus phase inversion is disabled on mono output. r=kinetik
MozReview-Commit-ID: 4Q4E4MUF2iW --HG-- extra : rebase_source : 91439572a6d58856d18188f56226d6b819763e71
This commit is contained in:
Alex Chronopoulos
Родитель
851a3ee589
Коммит
321ec00151
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@ -607,6 +607,8 @@ support-files =
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test-7-6.1.opus^headers^
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test-7-6.1.opus^headers^
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test-8-7.1.opus
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test-8-7.1.opus
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test-8-7.1.opus^headers^
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test-8-7.1.opus^headers^
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test-stereo-phase-inversion-180.opus
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test-stereo-phase-inversion-180.opus^headers^
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variable-channel.ogg
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variable-channel.ogg
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variable-channel.ogg^headers^
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variable-channel.ogg^headers^
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variable-channel.opus
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variable-channel.opus
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@ -1273,3 +1275,5 @@ tags = hls
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# We could skip the test in that case as we cannot play 2 video at a time.
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# We could skip the test in that case as we cannot play 2 video at a time.
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skip-if = toolkit != 'android' || android_version < '18'
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skip-if = toolkit != 'android' || android_version < '18'
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tags = hls
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tags = hls
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[test_bug1431810_opus_downmix_to_mono.html]
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Двоичный файл не отображается.
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@ -0,0 +1 @@
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Cache-Control: no-store
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@ -0,0 +1,137 @@
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Media test: disable phase inversion in opus decoder</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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</head>
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<body>
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<audio preload=none id="a" controls></audio>
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<audio preload=none id="b" controls></audio>
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<script class="testbody" type="text/javascript">
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/*
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This test makes use of an (stereo) opus file with phase inversion of 180 degrees (right = -left => right + left = 0).
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Firstly, the phase inversion is verified on a normal stereo playback.
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Secondly, mono playback is forced which results in the phase inversion being disabled (Bug 1431810).
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*/
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SimpleTest.waitForExplicitFinish();
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function areChannelsInverted(b1, b2) {
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for (var i = 0; i < b1.length; i++) {
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if (Math.abs(b1[i] + b2[i]) > 9e-2) {
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return false;
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}
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}
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return true;
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}
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function areChannelsEqual(b1, b2) {
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for (var i = 0; i < b1.length; i++) {
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if (Math.abs(b1[i] - b2[i]) > 9e-3) {
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return false;
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}
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}
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return true;
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}
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function isSilent(b) {
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for (var i = 0; i < b.length; i++) {
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if (b[i] != 0.0) {
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return false;
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}
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}
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return true;
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}
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function mediaElementWithPhaseInversion(audioContext, mediaElement, success) {
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let audio_source = audioContext.createMediaElementSource(mediaElement);
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let script_processor = audioContext.createScriptProcessor();
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audio_source.connect(script_processor);
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mediaElement.onplay = () => {
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script_processor.onaudioprocess = (e) => {
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let right = e.inputBuffer.getChannelData(0);
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let left = e.inputBuffer.getChannelData(1);
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// This is leading or trailing silence
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// produced by ScriptProcessor.
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if (isSilent(right) && isSilent(left)) {
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return;
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}
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ok(areChannelsInverted(right, left), "Channels must be inverted");
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}
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}
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mediaElement.onended = () => {
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ok(true, "End of file.");
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mediaElement.onended = null;
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script_processor.onaudioprocess = null;
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success();
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}
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mediaElement.src = "test-stereo-phase-inversion-180.opus";
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// Normal playback channels will by inverted
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mediaElement.play();
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}
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function mediaElementWithPhaseInversionDisabled(audioContext, mediaElement, success) {
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let audio_source = audioContext.createMediaElementSource(mediaElement);
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let script_processor = audioContext.createScriptProcessor();
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audio_source.connect(script_processor);
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mediaElement.onplay = () => {
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script_processor.onaudioprocess = (e) => {
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let right = e.inputBuffer.getChannelData(0);
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let left = e.inputBuffer.getChannelData(1);
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// This is leading or trailing silence
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// produced by ScriptProcessor.
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if (isSilent(right) && isSilent(left)) {
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return;
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}
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ok(!areChannelsInverted(right, left), "Channels must not be inverted");
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ok(areChannelsEqual(right, left), "Channels must be equal");
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}
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}
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mediaElement.onended = () => {
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ok(true, "End of file.");
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mediaElement.onended = null;
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script_processor.onaudioprocess = null;
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success();
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}
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mediaElement.src = "test-stereo-phase-inversion-180.opus";
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// Downmix to mono will force to disable opus phase inversion
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SpecialPowers.pushPrefEnv({"set": [["accessibility.monoaudio.enable", true]]})
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.then(() => {
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mediaElement.play();
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});
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}
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let ac = new AudioContext();
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function testPhaseInversion(mediaElement) {
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return new Promise((accept, reject) => {
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mediaElementWithPhaseInversion(ac, a, accept);
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});
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}
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function testPhaseInversionDisabled(mediaElement) {
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return new Promise((accept, reject) => {
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mediaElementWithPhaseInversionDisabled(ac, b, accept);
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});
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}
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// Start testing
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testPhaseInversion(a)
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.then( () => testPhaseInversionDisabled(b) )
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.then( () => SimpleTest.finish() )
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</script>
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</pre>
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</body>
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</html>
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