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Test Info:
<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="pc.js"></script>
<script type="application/javascript" src="simulcast.js"></script>
<script type="application/javascript" src="helpers_from_wpt/sdp.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
createHTML({
bug: "1401592",
title: "Simulcast negotiation tests",
visible: true
});
// simulcast negotiation is mostly tested in wpt, but we test a few
// implementation-specific things here.
const tests = [
async function checkVideoEncodingLimit() {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
const stream = await navigator.mediaDevices.getUserMedia({video: true});
const sender = pc1.addTrack(stream.getTracks()[0]);
pc2.addTrack(stream.getTracks()[0]);
await doOfferToRecvSimulcast(pc2, pc1, ["1", "2", "3", "4"]);
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
isDeeply(rids, ["1", "2", "3"]);
pc1.close();
pc2.close();
stream.getTracks().forEach(track => track.stop());
},
// wpt currently does not assume support for 3 encodings, which limits the
// effectiveness of its powers-of-2 test (since it can test only for 1 and 2)
async function checkScaleResolutionDownByAutoFillPowersOf2() {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
const stream = await navigator.mediaDevices.getUserMedia({video: true});
const sender = pc1.addTrack(stream.getTracks()[0]);
pc2.addTrack(stream.getTracks()[0]);
await doOfferToRecvSimulcast(pc2, pc1, ["1", "2", "3"]);
const {encodings} = sender.getParameters();
const scaleValues = encodings.map(({scaleResolutionDownBy}) => scaleResolutionDownBy);
isDeeply(scaleValues, [4, 2, 1]);
},
async function checkLibwebrtcRidLengthLimit() {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
const stream = await navigator.mediaDevices.getUserMedia({video: true});
const sender = pc1.addTrack(stream.getTracks()[0]);
pc2.addTrack(stream.getTracks()[0]);
await doOfferToRecvSimulcast(pc2, pc1, ["foo", "wibblywobblyjeremybearimy"]);
const {encodings} = sender.getParameters();
const rids = encodings.map(({rid}) => rid);
isDeeply(rids, ["foo"]);
pc1.close();
pc2.close();
stream.getTracks().forEach(track => track.stop());
},
];
runNetworkTest(async () => {
for (const test of tests) {
info(`Running test: ${test.name}`);
await test();
info(`Done running test: ${test.name}`);
}
});
</script>
</pre>
</body>
</html>