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Mercurial (2f19e7b646e0)

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<!DOCTYPE HTML>
<html>
<head>
  <script type="application/javascript" src="mediaStreamPlayback.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
  "use strict";

  createHTML({
    title: "MediaStreamTrack.clone()",
    bug: "1208371"
  });

  var testSingleTrackClonePlayback = constraints =>
      getUserMedia(constraints).then(stream => {
    info("Test clone()ing an " + constraints + " gUM track");
    var track = stream.getTracks()[0];
    var clone = track.clone();

    checkMediaStreamTrackCloneAgainstOriginal(clone, track);

    info("Stopping original track");
    track.stop();

    info("Creating new stream for clone");
    var cloneStream = new MediaStream([clone]);
    checkMediaStreamContains(cloneStream, [clone]);

    info("Testing playback of track clone");
    var test = createMediaElement('video', 'testClonePlayback');
    var playback = new MediaStreamPlayback(test, cloneStream);
    return playback.playMedia(false);
  });

  runTest(() => Promise.resolve()
    .then(() => testSingleTrackClonePlayback({audio: true}))
    .then(() => testSingleTrackClonePlayback({video: true}))
    .then(() => getUserMedia({video: true})).then(stream => {
      info("Test cloning a track into inception");
      var track = stream.getTracks()[0];
      var clone = track;
      var clones = Array(10).fill().map(() => clone = clone.clone());
      var inceptionClone = clones.pop();
      checkMediaStreamTrackCloneAgainstOriginal(inceptionClone, track);

      var cloneStream = new MediaStream();
      cloneStream.addTrack(inceptionClone);

      // cloneStream is now essentially the same as stream.clone();
      checkMediaStreamCloneAgainstOriginal(cloneStream, stream);

      var test = createMediaElement('video', 'testClonePlayback');
      var playback = new MediaStreamPlayback(test, cloneStream);
      return playback.playMedia(false).then(() => {
          info("Testing that clones of ended tracks are ended");
          cloneStream.clone().getTracks().forEach(t =>
            is(t.readyState, "ended", "Track " + t.id + " should be ended"));
        })
        .then(() => {
          clones.forEach(t => t.stop());
          track.stop();
        });
    })
    .then(() => getUserMedia({audio: true, video: true})).then(stream => {
      info("Test adding many track clones to the original stream");

      const LOOPS = 3;
      for (var i = 0; i < LOOPS; i++) {
        stream.getTracks().forEach(t => stream.addTrack(t.clone()));
      }
      is(stream.getVideoTracks().length, Math.pow(2, LOOPS),
         "The original track should contain the original video track and all the video clones");
      stream.getTracks().forEach(t1 => is(stream.getTracks()
                                                .filter(t2 => t1.id == t2.id)
                                                .length,
                                          1, "Each track should be unique"));

      var test = createMediaElement('video', 'testClonePlayback');
      var playback = new MediaStreamPlayback(test, stream);
      return playback.playMedia(false);
    })
    .then(() => {
      info("Testing audio content routing with MediaStreamTrack.clone()");
      var ac = new AudioContext();

      var osc1kOriginal = createOscillatorStream(ac, 1000);
      var audioTrack1kOriginal = osc1kOriginal.getTracks()[0];
      var audioTrack1kClone = audioTrack1kOriginal.clone();

      var osc5kOriginal = createOscillatorStream(ac, 5000);
      var audioTrack5kOriginal = osc5kOriginal.getTracks()[0];
      var audioTrack5kClone = audioTrack5kOriginal.clone();

      return Promise.resolve().then(() => {
        info("Analysing audio output enabled and disabled tracks that don't affect each other");
        audioTrack1kOriginal.enabled = true;
        audioTrack5kOriginal.enabled = false;

        audioTrack1kClone.enabled = false;
        audioTrack5kClone.enabled = true;

        var analyser =
          new AudioStreamAnalyser(ac, new MediaStream([audioTrack1kOriginal,
                                                      audioTrack5kOriginal]));
        return analyser.waitForAnalysisSuccess(array =>
                 array[analyser.binIndexForFrequency(50)] < 50 &&
                 array[analyser.binIndexForFrequency(1000)] > 200 &&
                 array[analyser.binIndexForFrequency(3000)] < 50 &&
                 array[analyser.binIndexForFrequency(5000)] < 50)
          .then(() => analyser.disconnect())
          .then(() => {
            var cloneAnalyser =
              new AudioStreamAnalyser(ac, new MediaStream([audioTrack1kClone,
                                                           audioTrack5kClone]));
            return cloneAnalyser.waitForAnalysisSuccess(array =>
                     array[cloneAnalyser.binIndexForFrequency(1000)] < 50 &&
                     array[cloneAnalyser.binIndexForFrequency(3000)] < 50 &&
                     array[cloneAnalyser.binIndexForFrequency(5000)] > 200 &&
                     array[cloneAnalyser.binIndexForFrequency(10000)] < 50)
              .then(() => cloneAnalyser.disconnect());
          })
          // Restore original tracks
          .then(() => [audioTrack1kOriginal,
                       audioTrack5kOriginal,
                       audioTrack1kClone,
                       audioTrack5kClone].forEach(t => t.enabled = true));
      }).then(() => {
        info("Analysing audio output of 1k original and 5k clone.");
        var stream = new MediaStream();
        stream.addTrack(audioTrack1kOriginal);
        stream.addTrack(audioTrack5kClone);

        var analyser = new AudioStreamAnalyser(ac, stream);
        return analyser.waitForAnalysisSuccess(array =>
                 array[analyser.binIndexForFrequency(50)] < 50 &&
                 array[analyser.binIndexForFrequency(1000)] > 200 &&
                 array[analyser.binIndexForFrequency(3000)] < 50 &&
                 array[analyser.binIndexForFrequency(5000)] > 200 &&
                 array[analyser.binIndexForFrequency(10000)] < 50)
          .then(() => {
            info("Waiting for tracks to stop");
            stream.getTracks().forEach(t => t.stop());
            return analyser.waitForAnalysisSuccess(array =>
                     array[analyser.binIndexForFrequency(50)] < 50 &&
                     array[analyser.binIndexForFrequency(1000)] < 50 &&
                     array[analyser.binIndexForFrequency(3000)] < 50 &&
                     array[analyser.binIndexForFrequency(5000)] < 50 &&
                     array[analyser.binIndexForFrequency(10000)] < 50);
          }).then(() => analyser.disconnect());
      }).then(() => {
        info("Analysing audio output of clones of clones (1kx2 + 5kx4)");
        var stream = new MediaStream([audioTrack1kClone.clone(),
                                      audioTrack5kOriginal.clone().clone().clone().clone()]);

        var analyser = new AudioStreamAnalyser(ac, stream);
        return analyser.waitForAnalysisSuccess(array =>
                 array[analyser.binIndexForFrequency(50)] < 50 &&
                 array[analyser.binIndexForFrequency(1000)] > 200 &&
                 array[analyser.binIndexForFrequency(3000)] < 50 &&
                 array[analyser.binIndexForFrequency(5000)] > 200 &&
                 array[analyser.binIndexForFrequency(10000)] < 50)
          .then(() => analyser.disconnect());
      });
    }));
</script>
</pre>
</body>
</html>