зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1081819 - Add mochitest for piping WebAudio in and out of PeerConnection. r=jesup,padenot
This commit is contained in:
Andreas Pehrson
Родитель
35fb84dfd4
Коммит
7f6daeea34
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@ -178,6 +178,8 @@ skip-if = toolkit == 'gonk' # b2g (Bug 1059867)
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skip-if = toolkit == 'gonk' # b2g (Bug 1059867)
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[test_peerConnection_addDataChannelNoBundle.html]
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skip-if = toolkit == 'gonk' # b2g (Bug 1059867)
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[test_peerConnection_webAudio.html]
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skip-if = toolkit == 'gonk' # b2g (Bug 1059867)
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# Bug 950317: Hack for making a cleanup hook after finishing all WebRTC cases
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[test_zmedia_cleanup.html]
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@ -0,0 +1,117 @@
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<!DOCTYPE HTML>
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<html>
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<head>
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<script type="application/javascript" src="pc.js"></script>
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</head>
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<body>
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<pre id="test">
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<script type="application/javascript;version=1.8">
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createHTML({
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bug: "1081819",
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title: "WebAudio on both input and output side of peerconnection"
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});
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// This tests WebAudio as input to a PeerConnection and a PeerConnection as
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// input to WebAudio. This is done by piping a 700Hz oscillator through an
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// analyser on the input side, the PeerConnection, and an analyser on the
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// output side. We then sanity check the audio by comparing the frequency domain
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// data from both analysers.
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runNetworkTest(function() {
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var test = new PeerConnectionTest();
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var audioContext = new AudioContext();
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var inputAnalyser;
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var outputAnalyser;
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test.setMediaConstraints([{audio: true}], []);
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test.chain.replace("PC_LOCAL_GUM", [
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function PC_LOCAL_WEBAUDIO_SOURCE(test) {
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var oscillator = audioContext.createOscillator();
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oscillator.type = 'sine';
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oscillator.frequency.value = 700;
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oscillator.start();
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inputAnalyser = audioContext.createAnalyser();
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var dest = audioContext.createMediaStreamDestination();
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oscillator.connect(inputAnalyser);
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inputAnalyser.connect(dest);
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test.pcLocal.attachMedia(dest.stream, 'audio', 'local');
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return Promise.resolve();
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}
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]);
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test.chain.insertBefore("PC_REMOTE_SETUP_ADDSTREAM_HANDLER", [
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function PC_REMOTE_REPLACE_ATTACHMEDIA(test) {
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var realAttachMedia = test.pcRemote.attachMedia.bind(test.pcRemote);
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test.pcRemote.attachMedia = function(stream, type, side) {
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var source = audioContext.createMediaStreamSource(stream);
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outputAnalyser = audioContext.createAnalyser();
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var dest = audioContext.createMediaStreamDestination();
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source.connect(outputAnalyser);
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outputAnalyser.connect(dest);
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realAttachMedia(dest.stream, type, side);
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};
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return Promise.resolve();
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}]);
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test.chain.append([
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function WAIT_FOR_CLEAN_AUDIO(test) {
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// We've seen completely silent output with e10s, suggesting that the
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// machine is overloaded. Here we wait for the media element on the
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// output side to progress a bit after all previous steps finish to
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// ensure we have healthy data to check.
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var wait = function(elem, startTime, resolve) {
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elem.ontimeupdate = function(ev) {
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info("Waiting... current: " + elem.currentTime + ", start: " + startTime);
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if (elem.currentTime - startTime < 0.5) {
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return;
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}
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elem.ontimeupdate = null;
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resolve();
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}
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};
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return Promise.all(test.pcRemote.mediaCheckers.map(function(checker) {
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var elem = checker.element;
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var startTime = elem.currentTime;
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return new Promise((y, n) => wait(elem, startTime, y));
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}));
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},
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function CHECK_AUDIO_FLOW(test) {
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// This is for sanity check only. We'll deem that the streams are working
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// if the global maxima in the frequency domain for both the input and
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// the output are within 10 (out of 1024) steps of each other.
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var inputData = new Uint8Array(inputAnalyser.frequencyBinCount);
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inputAnalyser.getByteFrequencyData(inputData);
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var outputData = new Uint8Array(outputAnalyser.frequencyBinCount);
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outputAnalyser.getByteFrequencyData(outputData);
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is(inputData.length, outputData.length, "Equally sized datasets");
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var maxWithIndex = function(a, b, i) {
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if (b >= a.value) {
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return { value: b, index: i };
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} else {
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return a;
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}
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};
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var initialValue = { value: -1, index: -1 };
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var inputMax = inputData.reduce(maxWithIndex, initialValue);
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var outputMax = outputData.reduce(maxWithIndex, initialValue);
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// Mild paranoia
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isnot(inputMax, 0, "Input should have data");
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isnot(outputMax, 0, "Output should have data");
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ok(Math.abs(inputMax.index - outputMax.index) < 10,
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"Input maxima " + inputMax.value + " at index " + inputMax.index +
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" should be within 10 steps of Output maxima " + outputMax.value +
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" at index " + outputMax.index);
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return Promise.resolve();
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}]);
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test.run();
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});
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</script>
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</pre>
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</body>
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</html>
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