Quelle  test_hevc_support.html   Sprache: HTML

<!DOCTYPE HTML>
<html>
<head>
<title>Test HEVC video support</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
<script type="application/javascript">

/**
 * This test is used to check we can get correct HEVC support information from
 * `canPlayType` and mediaCapabilities API on different platforms.
 */
const contentType = 'video/mp4; codecs="hev1.1.6.L93.B0"';
const videoConfiguration = {
  type: "file",
  video: {
    contentType,
    width: 1920,
    height: 1080,
    bitrate: 1000000,
    framerate: 30,
  },
};

const supportedOSs = ["WINNT", "Darwin", "Android"];

add_task(async function testHEVCSupport() {
  // Disable fingerprinting resistance/protection to get an accurate result.
  await SpecialPowers.pushPrefEnv({
    set: [
      ["privacy.resistFingerprinting", false],
      ["privacy.fingerprintingProtection", false],
    ],
  });
  const os = SpecialPowers.Services.appinfo.OS;
  const canPlay = document.createElement('video').canPlayType(contentType);
  if (supportedOSs.includes(os)) {
    ok(canPlay != "", `HEVC is supported`);
  } else {
    ok(canPlay == "", "HEVC is not supported on current platform");
  }

  const capability = await navigator.mediaCapabilities.decodingInfo(videoConfiguration);
  if (supportedOSs.includes(os)) {
    ok(capability.supported, `HEVC is supported`);
    ok(capability.powerEfficient, `HEVC is powerEfficient`);
  } else {
    ok(!capability.supported, "HEVC is not supported on current platform");
  }
});

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