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janus 1.x: prevent picture freezing on reconnecting

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This commit is contained in:
Maxim Devaev
2024-03-24 19:33:58 +02:00
parent 43f2f6f9aa
commit 62b14eeaa4
1 changed files with 38 additions and 31 deletions
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69
web/share/js/kvm/stream_janus.js
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@@ -130,11 +130,37 @@ export function JanusStreamer(__setActive, __setInactive, __setInfo, __orient, _
let stream = $("stream-video").srcObject;
if (stream) {
for (let track of stream.getTracks()) {
__logInfo("Removing track after destroying Janus:", track);
track.stop();
stream.removeTrack(track);
__removeTrack(track);
}
$("stream-video").srcObject = null;
}
};
var __addTrack = function(track) {
let el = $("stream-video");
if (el.srcObject) {
for (let tr of el.srcObject.getTracks()) {
if (tr.kind === track.kind && tr.id !== track.id) {
__removeTrack(tr);
}
}
}
if (!el.srcObject) {
el.srcObject = new MediaStream();
}
el.srcObject.addTrack(track);
};
var __removeTrack = function(track) {
let el = $("stream-video");
if (!el.srcObject) {
return;
}
track.stop();
el.srcObject.removeTrack(track);
if (el.srcObject.getTracks().length === 0) {
// MediaStream should be destroyed to prevent old picture freezing
// on Janus reconnecting.
el.srcObject = null;
}
};
@@ -228,40 +254,21 @@ export function JanusStreamer(__setActive, __setInactive, __setInfo, __orient, _
},
// Janus 1.x
"onremotetrack": function(changed_track, id, added, meta) {
"onremotetrack": function(track, id, added, meta) {
// Chrome sends `muted` notifiation for tracks in `disconnected` ICE state
// and Janus.js just removes muted track from list of available tracks.
// But track still exists actually so it's safe to just ignore
// reason == "mute" and "unmute".
let reason;
try {
reason = meta.reason;
} catch (err) {
reason = "???";
}
__logInfo("Got onremotetrack:", changed_track, id, added, reason, meta);
let el = $("stream-video");
if (!el.srcObject) {
el.srcObject = new MediaStream();
}
let stream = el.srcObject;
if (added && reason == "created") {
for (let track of stream.getTracks()) {
if (track.kind === changed_track.kind && track.id !== changed_track.id) {
track.stop();
stream.removeTrack(track);
}
}
stream.addTrack(changed_track);
if (changed_track.kind == "video") {
let reason = (meta || {}).reason;
__logInfo("Got onremotetrack:", id, added, reason, track, meta);
if (added && reason === "created") {
__addTrack(track);
if (track.kind === "video") {
__sendKeyRequired();
__startInfoInterval();
}
} else if (!added && reason == "ended") {
stream.removeTrack(changed_track);
} else if (!added && reason === "ended") {
__removeTrack(track);
}
},