Source code
Revision control
Copy as Markdown
Other Tools
Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /webrtc/protocol/rtp-demuxing.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title>RTCPeerConnection payload type demuxing</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../RTCPeerConnection-helper.js"></script>
<script>
'use strict';
promise_test(async t => {
const caller = new RTCPeerConnection();
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
exchangeIceCandidates(caller, callee);
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
stream.getTracks().forEach(track => caller.addTrack(track, stream));
stream.getTracks().forEach(track => caller.addTrack(track.clone(), stream.clone()));
let callCount = 0;
let metadataToBeLoaded = new Promise(resolve => {
callee.ontrack = (e) => {
const stream = e.streams[0];
const v = document.createElement('video');
v.autoplay = true;
v.srcObject = stream;
v.id = stream.id
v.addEventListener('loadedmetadata', () => {
if (++callCount === 2) {
resolve();
}
});
};
});
// Restrict first transceiver to VP8, second to H264.
const {codecs} = RTCRtpSender.getCapabilities('video');
const vp8 = codecs.find(c => c.mimeType === 'video/VP8');
const h264 = codecs.find(c => c.mimeType === 'video/H264');
caller.getTransceivers()[0].setCodecPreferences([vp8]);
caller.getTransceivers()[1].setCodecPreferences([h264]);
const offer = await caller.createOffer();
// Replace the mid header extension and all ssrc lines
// with bogus. The receiver will be forced to do payload type demuxing.
const sdp = offer.sdp
.replace(/rtp-hdrext:sdes/g, 'rtp-hdrext:something')
.replace(/a=ssrc:/g, 'a=notssrc');
await callee.setRemoteDescription({type: 'offer', sdp});
await caller.setLocalDescription(offer);
const answer = await callee.createAnswer();
await caller.setRemoteDescription(answer);
await callee.setLocalDescription(answer);
assert_equals(callee.getReceivers().length, 2);
await metadataToBeLoaded;
}, 'Can demux two video tracks with different payload types on a bundled connection');
promise_test(async t => {
const caller = new RTCPeerConnection({bundlePolicy: 'max-compat'});
t.add_cleanup(() => caller.close());
const callee = new RTCPeerConnection();
t.add_cleanup(() => callee.close());
exchangeIceCandidates(caller, callee);
const stream = await getNoiseStream({video: true});
t.add_cleanup(() => stream.getTracks().forEach(track => track.stop()));
stream.getTracks().forEach(track => caller.addTrack(track, stream));
stream.getTracks().forEach(track => caller.addTrack(track.clone(), stream.clone()));
let callCount = 0;
let metadataToBeLoaded = new Promise(resolve => {
callee.ontrack = (e) => {
const stream = e.streams[0];
const v = document.createElement('video');
v.autoplay = true;
v.srcObject = stream;
v.id = stream.id
v.addEventListener('loadedmetadata', () => {
if (++callCount === 2) {
resolve();
}
});
};
});
const offer = await caller.createOffer();
// Replace BUNDLE, the mid header extension and all ssrc lines
// with bogus. The receiver will be forced to do payload type demuxing
// which is still possible because the different m-lines arrive on
// different ports/sockets.
const sdp = offer.sdp.replace('BUNDLE', 'SOMETHING')
.replace(/rtp-hdrext:sdes/g, 'rtp-hdrext:something')
.replace(/a=ssrc:/g, 'a=notssrc');
await callee.setRemoteDescription({type: 'offer', sdp});
await caller.setLocalDescription(offer);
const answer = await callee.createAnswer();
await caller.setRemoteDescription(answer);
await callee.setLocalDescription(answer);
assert_equals(callee.getReceivers().length, 2);
await metadataToBeLoaded;
}, 'Can demux two video tracks with the same payload type on an unbundled connection');
</script>