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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<title>Test cloneElementVisually</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="https://example.com:443/tests/dom/media/test/cloneElementVisually_helpers.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css">
</head>
<body>
<div id="content">
<h1>Originals</h1>
<div id="originalContainer"></div>
<canvas id="canvas"></canvas>
<h1>MediaStream</h1>
<div id="streamTargetContainer"></div>
<h1>Clone</h1>
</div>
<div id="results">
<h1>Results</h1>
<canvas id="left"></canvas>
<canvas id="right"></canvas>
</div>
<script type="application/javascript">
/* import-globals-from cloneElementVisually_helpers.js */
/**
* Test that a clone of a video that is playing a MediaStream properly tracks
* the selected video track.
*/
add_task(async () => {
await SpecialPowers.pushPrefEnv({
set: [
["media.track.enabled", true],
],
});
let originalVideo = document.createElement("video");
originalVideo.id = "original";
document.getElementById("originalContainer").appendChild(originalVideo);
let streamTarget = document.createElement("video");
document.getElementById("streamTargetContainer").appendChild(streamTarget);
await setup();
let [track1] = originalVideo.mozCaptureStream().getTracks();
let playingPromise = waitForEventOnce(originalVideo, "playing");
await originalVideo.play();
await playingPromise;
let canvas = document.getElementById("canvas");
canvas.width = originalVideo.videoWidth / 2;
canvas.height = originalVideo.videoHeight / 2;
let ctx = canvas.getContext("2d");
let [track2] = canvas.captureStream().getTracks();
ctx.fillStyle = "green";
ctx.fillRect(0, 0, canvas.width, canvas.height);
streamTarget.srcObject = new MediaStream([track1, track2]);
playingPromise = waitForEventOnce(streamTarget, "playing");
await streamTarget.play();
await playingPromise;
await withNewClone(originalVideo, async clone => {
SpecialPowers.wrap(streamTarget).cloneElementVisually(clone);
let selectedTrackIdx = streamTarget.videoTracks.selectedIndex;
streamTarget.videoTracks[++selectedTrackIdx % 2].selected = true;
await waitForEventOnce(streamTarget, "resize");
ok(await assertVideosMatch(streamTarget, clone),
"Should match MediaStream");
});
// Capturing a stream from a video "taints" it which prevents testing
// shutdown decoder behaviour. To avoid interfering with future tests,
// we replace the video.
let newVideo = originalVideo.cloneNode();
originalVideo.parentNode.replaceChild(newVideo, originalVideo);
});
</script>
</body>
</html>
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