Quelle test_streams_capture_origin.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/media/test/test_streams_capture_origin.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Test for Bug 1189506</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>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1189506">Mozilla Bug 1189506</a>
<p id="display"></p>
<video id="vin"></video>
<video id="vout"></video>
<video id="vout_cors" crossorigin></video>
<canvas id="cin" width="40" height="30"></canvas>
<canvas id="cout" width="40" height="30"></canvas>
<canvas id="cout_cors" width="40" height="30"></canvas>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/* global vin, vout, vout_cors, cin, cout, cout_cors */

/** Test for Bug 1189506 **/

SimpleTest.waitForExplicitFinish();

async function start() {
  const resource = getPlayableVideo(gSmallTests).name;
  vin.src = "http://example.org:8000/tests/dom/media/test/" + resource;
  vin.preload = "metadata";

  await new Promise(r => vin.onloadedmetadata = r);
  vout.srcObject = vin.mozCaptureStreamUntilEnded();
  vout_cors.srcObject = vin.mozCaptureStreamUntilEnded();
  vin.play();
  vout.play();
  vout_cors.play();

  await new Promise(r => vout.onended = r);
  is(vin.ended, vout.ended, "Source media element ends first");

  const ctxin = SpecialPowers.wrap(cin.getContext("2d"));
  ctxin.drawImage(vin, 0, 0);

  {
    info("Testing that the last frame is rendered");
    const powerCtx = SpecialPowers.wrap(cout.getContext("2d"));
    powerCtx.drawImage(vout, 0, 0);
    const datain = ctxin.getImageData(0, 0, cin.width, cin.height);
    const dataout = powerCtx.getImageData(0, 0, cout.width, cout.height);
    for (let i = 0; i < datain.data.length; i += 4) {
      const pixelin = datain.data.slice(i, i + 4).join(',');
      const pixelout = dataout.data.slice(i, i + 4).join(',');
      if (pixelin != pixelout) {
        is(pixelout, pixelin, `Pixel #${i/4} is rendered as expected`);
        break;
      }
    }
    is(datain.data.length / 4, cin.width * cin.height,
      "Checked expected number of pixels");
  }

  {
    info("Testing that the principal is set");
    const ctx = cout.getContext("2d");
    ctx.drawImage(vout, 0, 0);
    SimpleTest.doesThrow(() => ctx.getImageData(0, 0, cout.width, cout.height),
      "SecurityError");
  }

  {
    info("Testing that the crossorigin attribute is ignored for MediaStreams");
    const ctx = cout_cors.getContext("2d");
    ctx.drawImage(vout_cors, 0, 0);
    SimpleTest.doesThrow(
      () => ctx.getImageData(0, 0, cout_cors.width, cout_cors.height),
      "SecurityError");
  }
}

(async () => {
  try { await start(); }
  catch(e) { ok(false, `Rejected with ${e}`); }
  finally { SimpleTest.finish(); }
})();
</script>
</pre>
</body>
</html>

Messung V0.5

¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.