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<!DOCTYPE html>
<html>
<title>Test MediaSource-in-Worker duration updates before and after HAVE_METADATA</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mediasource-message-util.js"></script>
<body>
<script>
function awaitDuration(t, video, worker, requestingMessage, expectedDuration) {
let durationAwaiter = t.step_func(() => {
if ((!Number.isNaN(expectedDuration) && video.duration === expectedDuration) ||
(Number.isNaN(expectedDuration) && Number.isNaN(video.duration))) {
worker.postMessage({ subject: messageSubject.ACK_VERIFIED, info: requestingMessage });
return;
}
// Otherwise, wait for one or more 'durationchange' events to see if video
// eventually has the expectedDuration.
video.addEventListener('durationchange', durationAwaiter, { once: true });
});
durationAwaiter();
}
async_test(t => {
// Fail fast if MSE-in-Workers is not supported.
assert_true(MediaSource.hasOwnProperty("canConstructInDedicatedWorker"), "MediaSource hasOwnProperty 'canConstructInDedicatedWorker'");
assert_true(MediaSource.canConstructInDedicatedWorker, "MediaSource.canConstructInDedicatedWorker");
const video = document.createElement("video");
document.body.appendChild(video);
video.onerror = t.unreached_func("video element error");
video.onended = t.unreached_func("video element ended");
assert_equals(video.duration, NaN, "initial video duration before attachment should be NaN");
assert_equals(video.readyState, HTMLMediaElement.HAVE_NOTHING, "initial video readyState before attachment should be HAVE_NOTHING");
let worker = new Worker("mediasource-worker-duration.js");
worker.onerror = t.step_func(e => {
assert_unreached("worker error: [" + e.filename + ":" + e.lineno + ":" + e.colno + ":" + e.error + ":" + e.message + "]");
});
worker.onmessage = t.step_func(e => {
let subject = e.data.subject;
assert_true(subject !== undefined, "message must have a subject field");
switch (subject) {
case messageSubject.ERROR:
assert_unreached("Worker error: " + e.data.info);
break;
case messageSubject.HANDLE:
const handle = e.data.info;
assert_equals(video.duration, NaN, "initial video duration before attachment should still be NaN");
assert_equals(video.readyState, HTMLMediaElement.HAVE_NOTHING,
"initial video readyState before attachment should still be HAVE_NOTHING");
video.srcObject = handle;
break;
case messageSubject.VERIFY_DURATION:
assert_equals(video.duration, e.data.info, "duration should match expectation");
worker.postMessage({ subject: messageSubject.ACK_VERIFIED, info: e.data });
break;
case messageSubject.AWAIT_DURATION:
awaitDuration(t, video, worker, e.data, e.data.info);
break;
case messageSubject.VERIFY_HAVE_NOTHING:
assert_equals(video.readyState, HTMLMediaElement.HAVE_NOTHING, "readyState should match expectation");
worker.postMessage({ subject: messageSubject.ACK_VERIFIED, info: e.data });
break;
case messageSubject.VERIFY_AT_LEAST_HAVE_METADATA:
assert_greater_than_equal(video.readyState, HTMLMediaElement.HAVE_METADATA, "readyState should match expectation");
worker.postMessage({ subject: messageSubject.ACK_VERIFIED, info: e.data });
break;
case messageSubject.WORKER_DONE:
// This test is a worker-driven set of verifications, and it will send
// this message when it is complete. See comment in the worker script
// that describes the phases of this test case.
assert_not_equals(video.srcObject, null, "test should at least have set srcObject.");
t.done();
break;
default:
assert_unreached("Unexpected message subject: " + subject);
}
});
}, "Test worker MediaSource duration updates before and after HAVE_METADATA");
</script>
</body>
</html>
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