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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: "MediaStream.clone()",
  bug: "1208371"
});

runTest(async () => {
  await pushPrefs(
    ["media.getusermedia.camera.stop_on_disable.enabled", true],
    ["media.getusermedia.camera.stop_on_disable.delay_ms", 0],
    ["media.getusermedia.microphone.stop_on_disable.enabled", true],
    ["media.getusermedia.microphone.stop_on_disable.delay_ms", 0]);

  let stream = await getUserMedia({audio: true, video: true});
  info("Test clone()ing an audio/video gUM stream");
  let clone = stream.clone();

  checkMediaStreamCloneAgainstOriginal(clone, stream);
  checkMediaStreamTrackCloneAgainstOriginal(clone.getAudioTracks()[0],
                                            stream.getAudioTracks()[0]);
  checkMediaStreamTrackCloneAgainstOriginal(clone.getVideoTracks()[0],
                                            stream.getVideoTracks()[0]);

  isnot(clone.id.length, 0, "Stream clone should have an id string");
  isnot(clone.getAudioTracks()[0].id.length, 0,
        "Audio track clone should have an id string");
  isnot(clone.getVideoTracks()[0].id.length, 0,
        "Audio track clone should have an id string");

  info("Stopping original tracks");
  stream.getTracks().forEach(t => t.stop());

  info("Playing from track clones");
  let test = createMediaElement('video', 'testClonePlayback');
  let playback = new MediaStreamPlayback(test, clone);
  await playback.playMedia(false);


  stream = await getUserMedia({video: true});
  let otherStream = await getUserMedia({video: true});
  info("Test addTrack()ing a video track to a stream without affecting its clone");
  let track = stream.getTracks()[0];
  let otherTrack = otherStream.getTracks()[0];

  let streamClone = stream.clone();
  let trackClone = streamClone.getTracks()[0];
  checkMediaStreamContains(streamClone, [trackClone], "Initial clone");

  stream.addTrack(otherTrack);
  checkMediaStreamContains(stream, [track, otherTrack],
                           "Added video to original");
  checkMediaStreamContains(streamClone, [trackClone],
                           "Clone not affected");

  stream.removeTrack(track);
  streamClone.addTrack(track);
  checkMediaStreamContains(streamClone, [trackClone, track],
                           "Added video to clone");
  checkMediaStreamContains(stream, [otherTrack],
                           "Original not affected");

  // Not part of streamClone. Does not get stopped by the playback test.
  otherTrack.stop();
  otherStream.stop();

  test = createMediaElement('video', 'testClonePlayback');
  playback = new MediaStreamPlayback(test, streamClone);
  await playback.playMedia(false);
  stream.getTracks().forEach(t => t.stop());
  stream.stop();


  stream = await getUserMedia({audio: true, video: true});
  info("Test cloning a stream into inception");
  clone = stream;
  let clones = Array(10).fill().map(() => clone = clone.clone());
  let inceptionClone = clones.pop();
  checkMediaStreamCloneAgainstOriginal(inceptionClone, stream);
  stream.getTracks().forEach(t => (stream.removeTrack(t),
                                   inceptionClone.addTrack(t)));
  is(inceptionClone.getAudioTracks().length, 2,
     "The inception clone should contain the original audio track and a track clone");
  is(inceptionClone.getVideoTracks().length, 2,
     "The inception clone should contain the original video track and a track clone");

  test = createMediaElement('video', 'testClonePlayback');
  playback = new MediaStreamPlayback(test, inceptionClone);
  await playback.playMedia(false);
  clones.forEach(c => c.getTracks().forEach(t => t.stop()));


  stream = await getUserMedia({audio: true, video: true});
  info("Test adding tracks from many stream clones to the original stream");

  const LOOPS = 3;
  for (let i = 0; i < LOOPS; i++) {
    stream.clone().getTracks().forEach(t => stream.addTrack(t));
  }
  is(stream.getAudioTracks().length, Math.pow(2, LOOPS),
     "The original track should contain the original audio track and all the audio clones");
  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"));

  test = createMediaElement('video', 'testClonePlayback');
  playback = new MediaStreamPlayback(test, stream);
  await playback.playMedia(false);


  info("Testing audio content routing with MediaStream.clone()");
  let ac = new AudioContext();

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

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

  info("Analysing audio output of original stream (1k + 5k)");
  stream = new MediaStream();
  stream.addTrack(audioTrack1kOriginal);
  stream.addTrack(audioTrack5kOriginal);

  let analyser = new AudioStreamAnalyser(ac, stream);
  await 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);

  info("Waiting for original tracks to stop");
  stream.getTracks().forEach(t => t.stop());
  await analyser.waitForAnalysisSuccess(array =>
          array[analyser.binIndexForFrequency(50)] < 50 &&
          // WebAudioDestination streams do not handle stop()
          // XXX Should they? Plan to resolve that in bug 1208384.
          // array[analyser.binIndexForFrequency(1000)] < 50 &&
          array[analyser.binIndexForFrequency(3000)] < 50 &&
          // array[analyser.binIndexForFrequency(5000)] < 50 &&
          array[analyser.binIndexForFrequency(10000)] < 50);
  analyser.disconnect();

  info("Analysing audio output of stream clone (1k + 5k)");
  stream = new MediaStream();
  stream.addTrack(audioTrack1kClone);
  stream.addTrack(audioTrack5kClone);

  analyser = new AudioStreamAnalyser(ac, stream);
  await 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);
  analyser.disconnect();

  info("Analysing audio output of clone of clone (1k + 5k)");
  stream = new MediaStream([audioTrack1kClone, audioTrack5kClone]).clone();

  analyser = new AudioStreamAnalyser(ac, stream);
  await 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);
  analyser.disconnect();

  info("Analysing audio output of clone() + addTrack()ed tracks (1k + 5k)");
  stream = new MediaStream(new MediaStream([ audioTrack1kClone
                                           , audioTrack5kClone
                                           ]).clone().getTracks());

  analyser = new AudioStreamAnalyser(ac, stream);
  await 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);
  analyser.disconnect();

  info("Analysing audio output of clone()d tracks in original stream (1k) " +
       "and clone()d tracks in stream clone (5k)");
  stream = new MediaStream([audioTrack1kClone, audioTrack5kClone]);
  streamClone = stream.clone();

  stream.getTracks().forEach(t => stream.removeTrack(t));
  stream.addTrack(streamClone.getTracks()[0]);
  streamClone.removeTrack(streamClone.getTracks()[0]);

  analyser = new AudioStreamAnalyser(ac, stream);
  await analyser.waitForAnalysisSuccess(array =>
          array[analyser.binIndexForFrequency(50)] < 50 &&
          array[analyser.binIndexForFrequency(1000)] > 200 &&
          array[analyser.binIndexForFrequency(3000)] < 50 &&
          array[analyser.binIndexForFrequency(5000)] < 50);
  analyser.disconnect();

  let cloneAnalyser = new AudioStreamAnalyser(ac, streamClone);
  await cloneAnalyser.waitForAnalysisSuccess(array =>
          array[cloneAnalyser.binIndexForFrequency(1000)] < 50 &&
          array[cloneAnalyser.binIndexForFrequency(3000)] < 50 &&
          array[cloneAnalyser.binIndexForFrequency(5000)] > 200 &&
          array[cloneAnalyser.binIndexForFrequency(10000)] < 50);
  cloneAnalyser.disconnect();

  info("Analysing audio output enabled and disabled tracks that don't affect each other");
  stream = new MediaStream([audioTrack1kClone, audioTrack5kClone]);
  clone = stream.clone();

  stream.getTracks()[0].enabled = true;
  stream.getTracks()[1].enabled = false;

  clone.getTracks()[0].enabled = false;
  clone.getTracks()[1].enabled = true;

  analyser = new AudioStreamAnalyser(ac, stream);
  await analyser.waitForAnalysisSuccess(array =>
          array[analyser.binIndexForFrequency(50)] < 50 &&
          array[analyser.binIndexForFrequency(1000)] > 200 &&
          array[analyser.binIndexForFrequency(3000)] < 50 &&
          array[analyser.binIndexForFrequency(5000)] < 50);
  analyser.disconnect();

  cloneAnalyser = new AudioStreamAnalyser(ac, clone);
  await cloneAnalyser.waitForAnalysisSuccess(array =>
          array[cloneAnalyser.binIndexForFrequency(1000)] < 50 &&
          array[cloneAnalyser.binIndexForFrequency(3000)] < 50 &&
          array[cloneAnalyser.binIndexForFrequency(5000)] > 200 &&
          array[cloneAnalyser.binIndexForFrequency(10000)] < 50);
  cloneAnalyser.disconnect();

  // Restore original tracks
  stream.getTracks().forEach(t => t.enabled = true);
});
</script>
</pre>
</body>
</html>