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<!DOCTYPE HTML>
<html>
<head>
<title>Test for bug 1073406. Pausing a video element should not pause another playing the same stream.</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>
<script type="text/javascript" src="gUM_support.js"></script>
</head>
<body>
<video id="video1" autoplay></video>
<video id="video2" autoplay></video>
<script class="testbody" type="text/javascript">
function getVideoImagePixelData(v) {
const canvas = document.createElement("canvas");
const ctx = canvas.getContext("2d");
ctx.drawImage(v, 0, 0);
const imgData = ctx.getImageData(canvas.width/2, canvas.height/2, 1, 1).data;
return "r" + imgData[0] +
"g" + imgData[1] +
"b" + imgData[2] +
"a" + imgData[3];
}
async function startTest() {
// This test expects fake devices so that the video color will change
// over time, explicitly request fakes.
await pushGetUserMediaTestPrefs({fakeAudio: true, fakeVideo: true});
const stream = await navigator.mediaDevices.getUserMedia({video: true});
const video1 = document.getElementById('video1');
const video2 = document.getElementById('video2');
video1.srcObject = stream;
video2.srcObject = stream;
await new Promise(r => video1.onplaying = r);
video1.pause();
await new Promise(r => video1.onpause = r);
const v1PausedImageData = getVideoImagePixelData(video1);
const v2PausedImageData = getVideoImagePixelData(video2);
while (getVideoImagePixelData(video2) == v2PausedImageData) {
info("video2 has not progressed. Waiting.");
await new Promise(r => video2.ontimeupdate = r);
}
// Wait for a while to be sure video1 would have gotten a frame
// if it is playing.
for (let i = 3; i != 0; i--) {
await new Promise(r => video2.ontimeupdate = r);
}
info("video2 progressed OK");
isnot(video1.currentTime, video2.currentTime,
"v1 and v2 should not be at the same currentTime");
is(getVideoImagePixelData(video1), v1PausedImageData,
"video1 video frame should not have updated since video1 paused");
for (const t of stream.getTracks()) {
t.stop();
}
}
SimpleTest.waitForExplicitFinish();
(async function() {
try {
await startTest();
} catch(error) {
ok(false, "getUserMedia should not fail, got " + error.name);
} finally {
SimpleTest.finish();
}
})();
</script>
</body>
</html>
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