dom/media/test/test_fastSeek-forwards.html
author Dorel Luca <dluca@mozilla.com>
Sat, 12 Jan 2019 01:28:30 +0200
changeset 453595 c45da646fc6140bd59a36bda18f6cecde6163feb
parent 226976 993b90fb20c9310436ebf413e5e9fab13520c717
child 469641 ba6f655fd68963530c866d0d4a48c3db3d307777
permissions -rw-r--r--
Backed out changeset 24243f13c895 (bug 1519308) for build bustage in mozbuild/mozbuild/test/configure/test_checks_configure.py. CLOSED TREE

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1022913
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 1022913</title>
  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="text/javascript" src="manifest.js"></script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1022913">Mozilla Bug 1022913</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
</pre>
  <script type="application/javascript">

    // Test that if we're doing a fastSeek() forwards that we don't end up
    // seeking backwards. This can happen if the keyframe before the seek
    // target is before the current playback position. We'd prefer to seek to
    // the keyframe after the seek target in this case, but we don't implement
    // this yet (bug 1026330).
    var manager = new MediaTestManager;

    var onSecondSeekComplete = function(event) {
      var v = event.target;
      v.removeEventListener("seeked", onSecondSeekComplete);
      ok(v.currentTime >= v.firstSeekTarget, v.name + " seek never go backwards. time=" + v.currentTime + " firstSeekTarget=" + v.firstSeekTarget + " secondSeekTarget=" + v.secondSeekTarget);
      manager.finished(v.token);
      removeNodeAndSource(v);
    };

    var onFirstSeekComplete = function(event) {
      var v = event.target;
      v.removeEventListener("seeked", onFirstSeekComplete);
      // Seek to 75% of the way between the start and the first keyframe
      // using fastSeek. We then test that the currentTime doesn't drop back
      // to the previous keyframe, currentTime should go forwards.
      v.addEventListener("seeked", onSecondSeekComplete);
      v.secondSeekTarget = v.keyframes[1] * 0.75;
      v.fastSeek(v.secondSeekTarget);
    }

    var onLoadedMetadata = function(event) {
      // Seek to the mid-point between the start and the first keyframe.
      var v = event.target;
      v.removeEventListener("loadedmetadata", onLoadedMetadata);
      v.addEventListener("seeked", onFirstSeekComplete);
      v.firstSeekTarget = v.keyframes[1] * 0.5;
      v.currentTime = v.firstSeekTarget;
    }

    function startTest(test, token) {
      manager.started(token);
      v = document.createElement("video");
      v.src = test.name;
      v.name = test.name;
      v.preload = "metadata";
      v.token = token;
      v.target = 0;
      v.keyframes = test.keyframes;
      v.keyframeIndex = 0;
      ok(v.keyframes.length >= 2, v.name + " - video should have at least two sync points");
      v.addEventListener("loadedmetadata", onLoadedMetadata);
      document.body.appendChild(v);
    }

    manager.runTests(gFastSeekTests, startTest);

  </script>
</body>
</html>