gecko-dev/dom/media/mediasource/test/test_BufferingWait.html

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<!DOCTYPE html>
<html><head>
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
<title>MSE: Don't get stuck buffering for too long when we have frames to show</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="mediasource.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test"><script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
var receivedSourceOpen = false;
runWithMSE(function(ms, v) {
ms.addEventListener("sourceopen", function() {
ok(true, "Receive a sourceopen event");
ok(!receivedSourceOpen, "Should only receive one sourceopen for this test");
receivedSourceOpen = true;
var sb = ms.addSourceBuffer("video/webm");
ok(sb, "Create a SourceBuffer");
function waitUntilTime(targetTime) {
return new Promise(function(resolve, reject) {
v.addEventListener("waiting", function onwaiting() {
info("Got a waiting event at " + v.currentTime);
if (v.currentTime >= targetTime) {
ok(true, "Reached target time of: " + targetTime);
v.removeEventListener("waiting", onwaiting);
resolve();
}
});
});
}
fetchWithXHR("seek.webm", function(arrayBuffer) {
sb.addEventListener('error', (e) => { ok(false, "Got Error: " + e); SimpleTest.finish(); });
loadSegment.bind(null, sb, new Uint8Array(arrayBuffer, 0, 318))().then(
loadSegment.bind(null, sb, new Uint8Array(arrayBuffer, 318, 25223-318))).then(
loadSegment.bind(null, sb, new Uint8Array(arrayBuffer, 25223, 46712-25223))).then(
/* Note - Missing |46712, 67833 - 46712| segment here corresponding to (0.8, 1.2] */
/* Note - Missing |67833, 88966 - 67833| segment here corresponding to (1.2, 1.6] */
loadSegment.bind(null, sb, new Uint8Array(arrayBuffer, 88966))).then(function() {
var promise = waitUntilTime(0.7);
info("Playing video. It should play for a bit, then fire 'waiting'");
v.play();
return promise;
}).then(function() {
window.firstStop = Date.now();
loadSegment(sb, new Uint8Array(arrayBuffer, 46712, 67833 - 46712));
return waitUntilTime(1.0);
}).then(function() {
var waitDuration = (Date.now() - window.firstStop) / 1000;
ok(waitDuration < 15, "Should not spend an inordinate amount of time buffering: " + waitDuration);
SimpleTest.finish();
/* If we allow the rest of the stream to be played, we get stuck at
around 2s. See bug 1093133.
once(v, 'ended', SimpleTest.finish.bind(SimpleTest));
return loadSegment(sb, new Uint8Array(arrayBuffer, 67833, 88966 - 67833));
*/
});
});
});
});
</script>
</pre>
</body>
</html>