Quelle test_video_dimensions.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/media/test/test_video_dimensions.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Test that a video element has set video dimensions on loadedmetadata</title>
  <script 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>
<pre id="test">
<script class="testbody" type="text/javascript">
var manager = new MediaTestManager;

var startTest = function(test, token) {
  manager.started(token);
  var v1 = document.createElement('video');
  var v2 = document.createElement('video');
  var vout = document.createElement('video');

  // Avoid a race for hardware resources between v1 and v2 on platforms with
  // a hardware decoder, like B2G.
  v1.preload = 'none';
  v2.preload = 'none';

  var numVideoElementsFinished = 0;

  var ondurationchange = function(ev) {
    var v = ev.target;
    info(v.testName + " got durationchange");
    v.durationchange = true;
  };
  var onresize = function(ev) {
    var v = ev.target;
    info(v.testName + " got resize");
    ok(!v.resize, v.testName + " should only fire resize once for same size");
    v.resize = true;
    ok(v.durationchange, v.testName +
       " durationchange event should have been emitted before resize");
    is(v.videoWidth, test.width, v.testName + " width should be set on resize");
    is(v.videoHeight, test.height, v.testName + " height should be set on resize");
  };
  var onloadedmetadata = function(ev) {
    var v = ev.target;
    info(v.testName + " got loadedmetadata");
    ok(!v.loadedmetadata, v.testName + " should only fire loadedmetadata once");
    v.loadedmetadata = true;
    ok(v.resize, v.testName +
       " resize event should have been emitted before loadedmetadata");

    numVideoElementsFinished += 1;
    if (v === v1) {
      removeNodeAndSource(v1);
      v2.load();
    }

    if (v === v2) {
      vout.srcObject = v2.mozCaptureStreamUntilEnded();
      v2.play();
      vout.play();
    }

    if (numVideoElementsFinished === 3) {
      removeNodeAndSource(v2);
      removeNodeAndSource(vout);
      manager.finished(token);
    }
  };
  var setupElement = function(v) {
    v.durationchange = false;
    v.ondurationchange = ondurationchange;
    v.resize = false;
    v.onresize = onresize;
    v.loadedmetadata = false;
    v.onloadedmetadata = onloadedmetadata;
    document.body.appendChild(v);
  };

  v1.testName = test.name;
  v2.testName = test.name + " (Captured)";
  vout.testName = test.name + " (Stream)";

  v1.src = test.name;
  v2.src = test.name;

  setupElement(v1, "v1");
  setupElement(v2, "v2");
  setupElement(vout, "vout");

  v1.play();
};

manager.runTests(getPlayableVideos(gSmallTests), startTest);
</script>
</pre>
</body>
</html>

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