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<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="mediaStreamPlayback.js"></script>
</head>
<body>
<pre id="test">
<script>
createHTML({
title: "HTMLMediaElement.setSinkId with default device and adding a track",
bug: "1661649",
});
/**
* Run a test to verify set sink id in audio element.
*/
runTest(async () => {
await pushPrefs(["media.setsinkid.enabled", true]);
// Expose an audio output device.
SpecialPowers.wrap(document).notifyUserGestureActivation();
await navigator.mediaDevices.selectAudioOutput();
const allDevices = await navigator.mediaDevices.enumerateDevices();
const audioDevices = allDevices.filter(({kind}) => kind == 'audiooutput');
info(`Found ${audioDevices.length} output devices`);
isnot(audioDevices.length, 0, "Found output devices");
const audio = createMediaElement("audio", "audio");
document.body.appendChild(audio);
audio.srcObject = await navigator.mediaDevices.getUserMedia({audio: true});
audio.play();
await audio.setSinkId(audioDevices[0].deviceId);
await audio.setSinkId("");
is(audio.sinkId, "", "sinkId restored to default");
audio.srcObject.addTrack((await navigator.mediaDevices.getUserMedia({audio: true})).getTracks()[0]);
await wait(0);
for (let t of audio.srcObject.getTracks()) {
t.stop();
}
});
</script>
</pre>
</body>
</html>
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