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<!DOCTYPE HTML>
<html>
<head>
<script type="application/javascript" src="pc.js"></script>
</head>
<body>
<pre id="test">
<script type="application/javascript">
createHTML({
bug: "1393687",
title: "Enforce max-fs constraint on a PeerConnection",
visible: true
});
var mustRejectWith = (msg, reason, f) =>
f().then(() => ok(false, msg),
e => is(e.name, reason, msg));
var removeAllButCodec = (d, codec) =>
(d.sdp = d.sdp.replace(/m=video (\w) UDP\/TLS\/RTP\/SAVPF \w.*\r\n/,
"m=video $1 UDP/TLS/RTP/SAVPF " + codec + "\r\n"), d);
var mungeSDP = (d, forceH264) => {
if (forceH264) {
removeAllButCodec(d, 126);
d.sdp = d.sdp.replace(/a=fmtp:126 (.*);packetization-mode=1/, "a=fmtp:126 $1;packetization-mode=1;max-fs=100");
} else {
d.sdp = d.sdp.replace(/max-fs=\d+/, "max-fs=100");
}
return d;
};
const checkForH264Support = async () => {
const pc = new RTCPeerConnection();
const offer = await pc.createOffer({offerToReceiveVideo: true});
return offer.sdp.match(/a=rtpmap:[1-9][0-9]* H264/);
};
let resolutionAlignment = 1;
function testScale(codec) {
var v1 = createMediaElement('video', 'v1');
var v2 = createMediaElement('video', 'v2');
var pc1 = new RTCPeerConnection();
var pc2 = new RTCPeerConnection();
var add = (pc, can, failed) => can && pc.addIceCandidate(can).catch(failed);
pc1.onicecandidate = e => add(pc2, e.candidate, generateErrorCallback());
pc2.onicecandidate = e => add(pc1, e.candidate, generateErrorCallback());
info("testing max-fs with" + codec);
pc1.onnegotiationneeded = e =>
pc1.createOffer()
.then(d => pc1.setLocalDescription(mungeSDP(d, codec == "H264")))
.then(() => pc2.setRemoteDescription(pc1.localDescription))
.then(() => pc2.createAnswer()).then(d => pc2.setLocalDescription(mungeSDP(d, codec =="H264")))
.then(() => pc1.setRemoteDescription(pc2.localDescription))
.catch(generateErrorCallback());
pc2.ontrack = e => {
v2.srcObject = e.streams[0];
};
var stream;
return navigator.mediaDevices.getUserMedia({ video: true })
.then(s => {
stream = s;
v1.srcObject = stream;
let track = stream.getVideoTracks()[0];
let sender = pc1.addTrack(track, stream);
is(v2.currentTime, 0, "v2.currentTime is zero at outset");
})
.then(() => wait(5000))
.then(() => {
if (v2.videoWidth == 0 && v2.videoHeight == 0) {
info("Skipping test, insufficient time for video to start.");
} else {
const expectedWidth = 184 - 184 % resolutionAlignment;
const expectedHeight = 138 - 138 % resolutionAlignment;
is(v2.videoWidth, expectedWidth,
`sink width should be ${expectedWidth} for ${codec}`);
is(v2.videoHeight, expectedHeight,
`sink height should be ${expectedHeight} for ${codec}`);
}})
.then(() => {
stream.getTracks().forEach(track => track.stop());
v1.srcObject = v2.srcObject = null;
}).catch(generateErrorCallback());
}
runNetworkTest(async () => {
await pushPrefs(['media.peerconnection.video.lock_scaling', true]);
if (await checkForH264Support()) {
if (navigator.userAgent.includes("Android")) {
// Android only has a hw encoder for h264
resolutionAlignment = 16;
}
await matchPlatformH264CodecPrefs();
await testScale("H264");
}
// Disable h264 hardware support, to ensure it is not prioritized over VP8
await pushPrefs(["media.webrtc.hw.h264.enabled", false]);
await testScale("VP8");
});
</script>
</pre>
</body>
</html>
|
