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Mercurial (66531295716a)

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<!DOCTYPE HTML>
<html>
<head>
  <script type="application/javascript" src="pc.js"></script>
  <script type="application/javascript" src="/tests/dom/canvas/test/captureStream_common.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
  createHTML({
    bug: "1017888",
    title: "Renegotiation: remove then add video track"
  });

  runNetworkTest(async function (options) {
    // Use fake video here since the native fake device on linux doesn't
    // change color as needed by checkVideoPlaying() below.
    await pushPrefs(
      ['media.video_loopback_dev', ''],
      ['media.navigator.streams.fake', true]);
    // [TODO] re-enable HW decoder after bug 1526207 is fixed.
    if (navigator.userAgent.includes("Android")) {
      await pushPrefs(["media.navigator.mediadatadecoder_vpx_enabled", false]);
    }

    const test = new PeerConnectionTest(options);
    const helper = new VideoStreamHelper();
    var originalTrack;
    let haveMuteEvent = new Promise(() => {});
    let haveUnmuteEvent = new Promise(() => {});
    addRenegotiation(test.chain,
      [
        function PC_REMOTE_FIND_RECEIVER(test) {
          is(test.pcRemote._pc.getReceivers().length, 1,
             "pcRemote should have one receiver");
          originalTrack = test.pcRemote._pc.getReceivers()[0].track;
        },
        function PC_LOCAL_REMOVE_VIDEO_TRACK(test) {
          // The new track's pipeline will start with a packet count of
          // 0, but the remote side will keep its old pipeline and packet
          // count.
          test.pcLocal.disableRtpCountChecking = true;
          return test.pcLocal.removeSender(0);
        },
        function PC_LOCAL_ADD_VIDEO_TRACK(test) {
          return test.pcLocal.getAllUserMediaAndAddStreams([{video: true}]);
        },
      ],
      [
        function PC_REMOTE_WAIT_FOR_UNMUTE() {
          return haveUnmuteEvent;
        },
        function PC_REMOTE_CHECK_ADDED_TRACK(test) {
          is(test.pcRemote._pc.getTransceivers().length, 2,
              "pcRemote should have two transceivers");
          const track = test.pcRemote._pc.getTransceivers()[1].receiver.track;

          const vAdded = test.pcRemote.remoteMediaElements.find(
              elem => elem.id.includes(track.id));
          return helper.checkVideoPlaying(vAdded);
        },
        function PC_REMOTE_WAIT_FOR_MUTE() {
          return haveMuteEvent;
        },
        function PC_REMOTE_CHECK_REMOVED_TRACK(test) {
          is(test.pcRemote._pc.getTransceivers().length, 2,
              "pcRemote should have two transceivers");
          const track = test.pcRemote._pc.getTransceivers()[0].receiver.track;

          const vAdded = test.pcRemote.remoteMediaElements.find(
              elem => elem.id.includes(track.id));
          return helper.checkVideoPaused(vAdded, 10, 10, 16, 5000);
        }
      ]
    );

    // Second negotiation should cause the first track to mute...
    test.chain.insertBefore("PC_REMOTE_SET_REMOTE_DESCRIPTION", [
      function PC_REMOTE_SETUP_ONMUTE(test) {
        haveMuteEvent = haveEvent(test.pcRemote._pc.getReceivers()[0].track, "mute");
      }
    ], false, 1);

    // ...and a second track to unmute.
    test.chain.insertAfter("PC_REMOTE_SET_REMOTE_DESCRIPTION", [
      function PC_REMOTE_SETUP_ONUNMUTE(test) {
        haveUnmuteEvent = haveEvent(test.pcRemote._pc.getReceivers()[1].track, "unmute");
      }
    ], false, 1);

    test.setMediaConstraints([{video: true}], [{video: true}]);
    test.run();
  });
</script>
</pre>
</body>
</html>