forked from mirrors/gecko-dev
717d9a23ba
Backed out changeset e926364f5d4f (bug 1665713) Backed out changeset ad03f6f54321 (bug 1665713)
123 lines
4.8 KiB
HTML
123 lines
4.8 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<script type="application/javascript" src="mediaStreamPlayback.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">
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createHTML({
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title: "getUserMedia multiple times, concurrently, and with different constraints",
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bug: "1404977"
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});
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/**
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* Verify that we can successfully call getUserMedia multiple times for the
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* same device, concurrently. This is checked by calling getUserMedia a number
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* of times with different constraints. We verify that the stream returned by
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* that call has the same constraints as requested both immediately after the
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* call and after all gUM calls have been made. The test then verifies the
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* streams can be played.
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*/
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runTest(async function() {
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// Compare constraints and return a string with the differences in
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// echoCancellation, autoGainControl, and noiseSuppression. The string
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// will be empty if there are no differences.
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function getConstraintDifferenceString(constraints, otherConstraints) {
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let diffString = "";
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if (constraints.echoCancellation != otherConstraints.echoCancellation) {
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diffString += "echoCancellation different: " +
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`${constraints.echoCancellation} != ${otherConstraints.echoCancellation}, `;
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}
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if (constraints.autoGainControl != otherConstraints.autoGainControl) {
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diffString += "autoGainControl different: " +
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`${constraints.autoGainControl} != ${otherConstraints.autoGainControl}, `;
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}
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if (constraints.noiseSuppression != otherConstraints.noiseSuppression) {
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diffString += "noiseSuppression different: " +
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`${constraints.noiseSuppression} != ${otherConstraints.noiseSuppression}, `;
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}
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// Replace trailing comma and space if any
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return diffString.replace(/, $/, "");
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}
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// We need a real device to get a MediaEngine supporting constraints
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let audioDevice = SpecialPowers.getCharPref("media.audio_loopback_dev", "");
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if (!audioDevice) {
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todo(false, "No device set by framework. Try --use-test-media-devices");
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return;
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}
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let egn = (e, g, n) => ({
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echoCancellation: e,
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autoGainControl: g,
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noiseSuppression: n
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});
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let constraintCombinations = [
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egn(false, false, false),
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egn(true, false, false),
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egn(false, true, false),
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egn(false, false, true),
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egn(true, true, false),
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egn(true, false, true),
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egn(false, true, true),
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egn(true, true, true),
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];
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// Array to store objects that associate information used in our test such as
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// constraints, gum streams, and various promises.
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let testCases = [];
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for (let constraints of constraintCombinations) {
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let testCase = {requestedConstraints: constraints};
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// Provide an id for logging, labeling related elements.
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testCase.id = `testCase.` +
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`e=${constraints.echoCancellation}.` +
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`g=${constraints.noiseSuppression}.` +
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`n=${constraints.noiseSuppression}`;
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testCases.push(testCase);
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testCase.gumStream =
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await getUserMedia({audio: testCase.requestedConstraints})
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.catch(e => Promise.reject(`getUserMedia calls should not fail! Failed at ${testCase.id} with: ${e}!`));
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let differenceString = getConstraintDifferenceString(
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testCase.requestedConstraints,
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testCase.gumStream.getAudioTracks()[0].getSettings());
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ok(!differenceString,
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`gUM stream for ${testCase.id} should have the same constraints as were ` +
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`requested from gUM. Differences: ${differenceString}`);
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}
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is(testCases.length,
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constraintCombinations.length,
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"Should have a stream for each constraint");
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// Once all streams are collected, make sure the constraints haven't been
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// mutated by another gUM call.
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for (let testCase of testCases) {
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let differenceString = getConstraintDifferenceString(
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testCase.requestedConstraints,
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testCase.gumStream.getAudioTracks()[0].getSettings());
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ok(!differenceString,
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`gUM stream for ${testCase.id} should not have had constraints altered after ` +
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`all gUM calls are done. Differences: ${differenceString}`);
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}
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// We do not currently have tests to verify the behaviour of the different
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// constraints. Once we do we should do further verificaiton here. See
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// bug 1406372, bug 1406376, and bug 1406377.
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for (let testCase of testCases) {
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let testAudio = createMediaElement("audio", `testAudio.${testCase.id}`);
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let playback = new MediaStreamPlayback(testAudio, testCase.gumStream);
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await playback.playMediaWithoutStoppingTracks(false);
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}
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// Stop the tracks for each stream, we left them running above via
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// playMediaWithoutStoppingTracks to make sure they can play concurrently.
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for (let testCase of testCases) {
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testCase.gumStream.getTracks().map(t => t.stop());
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}
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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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