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<!DOCTYPE HTML>
<html>
<head>
<title>Test MediaRecorder Recording creates videos that can playback more than once</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/dom/canvas/test/captureStream_common.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<div id="content">
<canvas id="video-src-canvas"></canvas>
<video id="recorded-video" loop></video>
</div>
<script class="testbody" type="text/javascript">
(async function() {
try {
SimpleTest.waitForExplicitFinish();
await startTest();
} catch(e) {
ok(false, `Got error msg '${e}'`);
} finally {
SimpleTest.finish();
}
})();
async function startTest() {
let canvas = document.getElementById("video-src-canvas");
let canvas_size = 100;
canvas.width = canvas.height = canvas_size;
let helper = new CaptureStreamTestHelper2D(canvas_size, canvas_size);
helper.drawColor(canvas, helper.red);
let stream = canvas.captureStream();
let mediaRecorder = new MediaRecorder(stream);
is(mediaRecorder.stream, stream,
"Media recorder stream = canvas stream at the beginning of recording");
new Promise(r => mediaRecorder.onerror = err => r(err)).then(
err => Promise.reject(`MediaRecorder: error unexpectedly fired. Code ${err.name}`));
mediaRecorder.start();
await new Promise(r => mediaRecorder.onstart = r);
info("Media recorder started");
// Feed some more data into the recorder so the output has a non trivial duration.
// This avoids the case where we have only 1 frame in the output, which breaks
// looping (this is expected as a WebM with 1 video frame has no duration).
let counter = 0;
let draw = () => {
counter++;
helper.drawColor(canvas, helper.blue);
if(counter > 2) {
mediaRecorder.stop();
return;
}
requestAnimationFrame(draw);
};
requestAnimationFrame(draw);
// When recorder is stopped get recorded data.
const data = await new Promise(r => mediaRecorder.ondataavailable = ev => r(ev));
info(`Media recorder get availiable data`);
const blob = data.data;
await new Promise(r => mediaRecorder.onstop = r);
info("Media recorder stopped");
ok(blob, "Should have gotten a data blob");
const video = document.getElementById("recorded-video");
new Promise(r => video.onerror = err => r(err)).then(
err => Promise.reject(`Video: error unexpectedly fired. Code ${err.code}`));
video.src = URL.createObjectURL(blob);
video.play();
await new Promise(r => video.onplaying = r);
for (let idx = 0; idx < 2; idx++) {
await new Promise(r => video.onseeking = r);
ok(true, `waiting until video finishes seeking`);
await new Promise(r => video.onseeked = r);
ok(true, "video finished seeked");
}
video.pause();
}
</script>
</pre>
</body>
</html>
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