зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1553215 - Start testing MediaStreamAudioSourceNode in WPT. r=karlt,pehrsons
It's not complete I think, but it covers the constructor and some bits of behaviour. Differential Revision: https://phabricator.services.mozilla.com/D32175 --HG-- extra : moz-landing-system : lando
This commit is contained in:
Paul Adenot
Родитель
e990bc2fe0
Коммит
f86c650449
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<!DOCTYPE html>
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<html class="a">
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<head>
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<title>MediaStreamAudioSourceNode</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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</head>
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<body class="a">
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<div id="log"></div>
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<script>
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setup({explicit_done: true});
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// Wait until the DOM is ready to be able to get a reference to the canvas
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// element.
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window.addEventListener("load", function() {
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const ac = new AudioContext();
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const emptyStream = new MediaStream();
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test(function() {
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assert_throws(
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"InvalidStateError",
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function() {
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ac.createMediaStreamSource(emptyStream);
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},
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`A MediaStreamAudioSourceNode can only be constructed via the factory
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method with a MediaStream that has at least one track of kind "audio"`
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);
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}, "MediaStreamAudioSourceNode created with factory method and MediaStream with no tracks");
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test(function() {
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assert_throws(
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"InvalidStateError",
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function() {
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new MediaStreamAudioSourceNode(ac, { mediaStream: emptyStream });
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},
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`A MediaStreamAudioSourceNode can only be constructed via the constructor
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with a MediaStream that has at least one track of kind "audio"`
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);
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}, "MediaStreamAudioSourceNode created with constructor and MediaStream with no tracks");
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const canvas = document.querySelector("canvas");
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const ctx = canvas.getContext("2d");
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const videoOnlyStream = canvas.captureStream();
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test(function() {
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assert_throws(
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"InvalidStateError",
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function() {
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ac.createMediaStreamSource(videoOnlyStream);
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},
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`A MediaStreamAudioSourceNode can only be constructed via the factory with a
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MediaStream that has at least one track of kind "audio"`
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);
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}, `MediaStreamAudioSourceNode created with the factory method and MediaStream with only a video track`);
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test(function() {
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assert_throws(
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"InvalidStateError",
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function() {
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new MediaStreamAudioSourceNode(ac, {
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mediaStream: videoOnlyStream,
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});
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},
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`A MediaStreamAudioSourceNode can only be constructed via the factory with a
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MediaStream that has at least one track of kind "audio"`
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);
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}, `MediaStreamAudioSourceNode created with constructor and MediaStream with only a video track`);
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done();
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});
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</script>
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</body>
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<canvas></canvas>
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</html>
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@ -0,0 +1,134 @@
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<!DOCTYPE html>
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<html class="a">
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<head>
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<title>MediaStreamAudioSourceNode</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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</head>
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<body class="a">
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<div id="log"></div>
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<script>
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function binIndexForFrequency(frequency, analyser) {
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return (
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1 +
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Math.round(
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(frequency * analyser.fftSize) / analyser.context.sampleRate
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)
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);
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}
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const t = async_test(
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"MediaStreamAudioSourceNode captures the right track."
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);
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const ac = new AudioContext();
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// Test that the right track is captured. Set up a MediaStream that has two
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// tracks, one with a tone at 100Hz and one with a tone at 1000Hz.
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const dest0 = ac.createMediaStreamDestination();
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const dest1 = ac.createMediaStreamDestination();
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const osc0 = ac.createOscillator();
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const osc1 = ac.createOscillator();
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osc0.frequency.value = 100;
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osc1.frequency.value = 1000;
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osc0.connect(dest0);
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osc1.connect(dest1);
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osc0.start(0);
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osc1.start(0);
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const track0 = dest0.stream.getAudioTracks()[0];
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const track0id = track0.id;
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const track1 = dest1.stream.getAudioTracks()[0];
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const track1id = track1.id;
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let ids = [track0id, track1id];
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ids.sort();
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let targetFrequency;
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let otherFrequency;
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if (ids[0] == track0id) {
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targetFrequency = 100;
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otherFrequency = 1000;
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} else {
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targetFrequency = 1000;
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otherFrequency = 100;
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}
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let twoTrackMediaStream = new MediaStream();
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twoTrackMediaStream.addTrack(track0);
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twoTrackMediaStream.addTrack(track1);
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const twoTrackSource = ac.createMediaStreamSource(twoTrackMediaStream);
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const analyser = ac.createAnalyser();
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twoTrackSource.connect(analyser);
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const indexToCheckForHighEnergy = binIndexForFrequency(
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targetFrequency,
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analyser
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);
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const indexToCheckForLowEnergy = binIndexForFrequency(
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otherFrequency,
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analyser
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);
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let frequencyData = new Float32Array(1024);
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let checkCount = 0;
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let numberOfRemovals = 0;
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let stopped = false;
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function analyse() {
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analyser.getFloatFrequencyData(frequencyData);
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// there should be high energy in the right bin, higher than 40dbfs because
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// it's supposed to be a sine wave at 0dbfs
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if (frequencyData[indexToCheckForHighEnergy] > -40 && !stopped) {
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assert_true(true, "Correct track routed to the AudioContext.");
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checkCount++;
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}
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if (stopped && frequencyData[indexToCheckForHighEnergy] < -40) {
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assert_true(
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true,
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`After stopping the track, low energy is found in the
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same bin`
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);
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checkCount++;
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}
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// Don't assert(false) immediately here if the bin is still higher than
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// -40db the analyzer node has a window and it's expecte that it takes some
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// time for the volume of this bin to decrease.
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if (frequencyData[indexToCheckForLowEnergy] < -80) {
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assert_true(true, "Correct track routed to the AudioContext.");
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} else {
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assert_true(
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false,
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"Other track seem to be routed to the AudioContext?"
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);
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}
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if (checkCount > 5 && checkCount < 20) {
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twoTrackMediaStream.getAudioTracks().forEach(track => {
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if (track.id == ids[0]) {
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numberOfRemovals++;
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window.removedTrack = track;
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twoTrackMediaStream.removeTrack(track);
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}
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});
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assert_true(
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numberOfRemovals == 1,
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`The mediastreamtrack can only be
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removed once from the mediastream`
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);
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} else if (checkCount >= 20 && checkCount < 30) {
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window.removedTrack.stop();
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stopped = true;
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} else if (checkCount >= 30) {
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assert_true(
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numberOfRemovals == 1,
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`After removing the track from the
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mediastream, it's still routed to the graph.`
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);
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// After some time, consider that it worked.
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t.done();
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return;
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}
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t.step_timeout(analyse, 100);
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}
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t.step_timeout(analyse, 100);
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</script>
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</body>
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</html>
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