test_setSinkId_default_addTrack.html

Enable keyboard shortcuts

<!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>