Quelle test_seamless_looping_duration.html Sprache: HTML

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

<!DOCTYPE HTML>
<html>
<head>
<title>Seamless looping test duration</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>
<script type="application/javascript">

/**
* This test aims to check that the media duration shouldn't be changed during
* seamless looping.
*/
add_task(async function testSeamlessLoopingDuration() {
  info(`create video and play it`);
  let video = document.createElement('video');
  video.loop = true;
  video.src = "gizmo-short.mp4";
  document.body.appendChild(video);
  await video.play();

  video.ondurationchange =
      _ => ok(false, "shouldn't change duration during looping!");

  info(`test seamless looping multiples times`);
  let MAX_LOOPING_COUNT = 10;
  for (let count = 0; count < MAX_LOOPING_COUNT; count++) {
    await once(video, "seeking");
    await once(video, "seeked");
    ok(true, `the round ${count} of the seamless looping succeeds`);
  }
});

// This one tests the situation where both tracks reached EOS before entering
// looping state.
add_task(async function testSeamlessLoopingDuration2() {
  info(`create video and play it to the end`);
  let video = document.createElement('video');
  video.src = "gizmo-short.mp4";
  document.body.appendChild(video);
  await video.play();
  await once(video, "ended");

  info(`play video again`);
  video.ondurationchange =
      _ => ok(false, "shouldn't change duration during looping!");
  video.loop = true;
  await video.play();

  info(`test seamless looping multiples times`);
  let MAX_LOOPING_COUNT = 10;
  for (let count = 0; count < MAX_LOOPING_COUNT; count++) {
    await once(video, "seeking");
    await once(video, "seeked");
    ok(true, `the round ${count} of the seamless looping succeeds`);
  }
});

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

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