/
mvideoroom.js
1081 lines (1062 loc) · 44.3 KB
/
mvideoroom.js
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// We import the settings.js file to know which address we should contact
// to talk to Janus, and optionally which STUN/TURN servers should be
// used as well. Specifically, that file defines the "server" and
// "iceServers" properties we'll pass when creating the Janus session.
/* global iceServers:readonly, Janus:readonly, server:readonly */
var janus = null;
var sfutest = null;
var opaqueId = "videoroomtest-"+Janus.randomString(12);
var myroom = 1234; // Demo room
if(getQueryStringValue("room") !== "")
myroom = parseInt(getQueryStringValue("room"));
var myusername = null;
var myid = null;
var mystream = null;
// We use this other ID just to map our subscriptions to us
var mypvtid = null;
var remoteFeed = null;
var feeds = {}, feedStreams = {}, subStreams = {}, slots = {}, mids = {}, subscriptions = {};
var localTracks = {}, localVideos = 0, remoteTracks = {};
var bitrateTimer = [], simulcastStarted = {}, svcStarted = {};
var doSimulcast = (getQueryStringValue("simulcast") === "yes" || getQueryStringValue("simulcast") === "true");
var doSvc = getQueryStringValue("svc");
if(doSvc === "")
doSvc = null;
var acodec = (getQueryStringValue("acodec") !== "" ? getQueryStringValue("acodec") : null);
var vcodec = (getQueryStringValue("vcodec") !== "" ? getQueryStringValue("vcodec") : null);
var subscriber_mode = (getQueryStringValue("subscriber-mode") === "yes" || getQueryStringValue("subscriber-mode") === "true");
var use_msid = (getQueryStringValue("msid") === "yes" || getQueryStringValue("msid") === "true");
$(document).ready(function() {
// Initialize the library (all console debuggers enabled)
Janus.init({debug: "all", callback: function() {
// Use a button to start the demo
$('#start').one('click', function() {
$(this).attr('disabled', true).unbind('click');
// Make sure the browser supports WebRTC
if(!Janus.isWebrtcSupported()) {
bootbox.alert("No WebRTC support... ");
return;
}
// Create session
janus = new Janus(
{
server: server,
iceServers: iceServers,
// Should the Janus API require authentication, you can specify either the API secret or user token here too
// token: "mytoken",
// or
// apisecret: "serversecret",
success: function() {
// Attach to video room test plugin
janus.attach(
{
plugin: "janus.plugin.videoroom",
opaqueId: opaqueId,
success: function(pluginHandle) {
$('#details').remove();
sfutest = pluginHandle;
Janus.log("Plugin attached! (" + sfutest.getPlugin() + ", id=" + sfutest.getId() + ")");
Janus.log(" -- This is a publisher/manager");
// Prepare the username registration
$('#videojoin').removeClass('hide');
$('#registernow').removeClass('hide');
$('#register').click(registerUsername);
$('#username').focus();
$('#start').removeAttr('disabled').html("Stop")
.click(function() {
$(this).attr('disabled', true);
janus.destroy();
});
},
error: function(error) {
Janus.error(" -- Error attaching plugin...", error);
bootbox.alert("Error attaching plugin... " + error);
},
consentDialog: function(on) {
Janus.debug("Consent dialog should be " + (on ? "on" : "off") + " now");
if(on) {
// Darken screen and show hint
$.blockUI({
message: '<div><img src="up_arrow.png"/></div>',
baseZ: 3001,
css: {
border: 'none',
padding: '15px',
backgroundColor: 'transparent',
color: '#aaa',
top: '10px',
left: '100px'
} });
} else {
// Restore screen
$.unblockUI();
}
},
iceState: function(state) {
Janus.log("ICE state changed to " + state);
},
mediaState: function(medium, on, mid) {
Janus.log("Janus " + (on ? "started" : "stopped") + " receiving our " + medium + " (mid=" + mid + ")");
},
webrtcState: function(on) {
Janus.log("Janus says our WebRTC PeerConnection is " + (on ? "up" : "down") + " now");
$("#videolocal").parent().parent().unblock();
if(!on)
return;
$('#publish').remove();
// This controls allows us to override the global room bitrate cap
$('#bitrate').parent().parent().removeClass('hide');
$('#bitrate a').click(function() {
$('.dropdown-toggle').dropdown('hide');
let id = $(this).attr("id");
let bitrate = parseInt(id)*1000;
if(bitrate === 0) {
Janus.log("Not limiting bandwidth via REMB");
} else {
Janus.log("Capping bandwidth to " + bitrate + " via REMB");
}
$('#bitrateset').text($(this).text()).parent().removeClass('open');
sfutest.send({ message: { request: "configure", bitrate: bitrate }});
return false;
});
},
slowLink: function(uplink, lost, mid) {
Janus.warn("Janus reports problems " + (uplink ? "sending" : "receiving") +
" packets on mid " + mid + " (" + lost + " lost packets)");
},
onmessage: function(msg, jsep) {
Janus.debug(" ::: Got a message (publisher) :::", msg);
let event = msg["videoroom"];
Janus.debug("Event: " + event);
if(event != undefined && event != null) {
if(event === "joined") {
// Publisher/manager created, negotiate WebRTC and attach to existing feeds, if any
myid = msg["id"];
mypvtid = msg["private_id"];
Janus.log("Successfully joined room " + msg["room"] + " with ID " + myid);
if(subscriber_mode) {
$('#videojoin').addClass('hide');
$('#videos').removeClass('hide');
} else {
publishOwnFeed(true);
}
// Any new feed to attach to?
if(msg["publishers"]) {
let list = msg["publishers"];
Janus.debug("Got a list of available publishers/feeds:", list);
let sources = null;
for(let f in list) {
if(list[f]["dummy"])
continue;
let id = list[f]["id"];
let display = list[f]["display"];
let streams = list[f]["streams"];
for(let i in streams) {
let stream = streams[i];
stream["id"] = id;
stream["display"] = display;
}
let slot = feedStreams[id] ? feedStreams[id].slot : null;
let remoteVideos = feedStreams[id] ? feedStreams[id].remoteVideos : 0;
feedStreams[id] = {
id: id,
display: display,
streams: streams,
slot: slot,
remoteVideos: remoteVideos
}
Janus.debug(" >> [" + id + "] " + display + ":", streams);
if(!sources)
sources = [];
sources.push(streams);
}
if(sources)
subscribeTo(sources);
}
} else if(event === "destroyed") {
// The room has been destroyed
Janus.warn("The room has been destroyed!");
bootbox.alert("The room has been destroyed", function() {
window.location.reload();
});
} else if(event === "event") {
// Any info on our streams or a new feed to attach to?
if(msg["streams"]) {
let streams = msg["streams"];
for(let i in streams) {
let stream = streams[i];
stream["id"] = myid;
stream["display"] = myusername;
}
feedStreams[myid] = {
id: myid,
display: myusername,
streams: streams
}
} else if(msg["publishers"]) {
let list = msg["publishers"];
Janus.debug("Got a list of available publishers/feeds:", list);
let sources = null;
for(let f in list) {
if(list[f]["dummy"])
continue;
let id = list[f]["id"];
let display = list[f]["display"];
let streams = list[f]["streams"];
for(let i in streams) {
let stream = streams[i];
stream["id"] = id;
stream["display"] = display;
}
let slot = feedStreams[id] ? feedStreams[id].slot : null;
let remoteVideos = feedStreams[id] ? feedStreams[id].remoteVideos : 0;
feedStreams[id] = {
id: id,
display: display,
streams: streams,
slot: slot,
remoteVideos: remoteVideos
}
Janus.debug(" >> [" + id + "] " + display + ":", streams);
if(!sources)
sources = [];
sources.push(streams);
}
if(sources)
subscribeTo(sources);
} else if(msg["leaving"]) {
// One of the publishers has gone away?
let leaving = msg["leaving"];
Janus.log("Publisher left: " + leaving);
unsubscribeFrom(leaving);
} else if(msg["unpublished"]) {
// One of the publishers has unpublished?
let unpublished = msg["unpublished"];
Janus.log("Publisher left: " + unpublished);
if(unpublished === 'ok') {
// That's us
sfutest.hangup();
return;
}
unsubscribeFrom(unpublished);
} else if(msg["error"]) {
if(msg["error_code"] === 426) {
// This is a "no such room" error: give a more meaningful description
bootbox.alert(
"<p>Apparently room <code>" + myroom + "</code> (the one this demo uses as a test room) " +
"does not exist...</p><p>Do you have an updated <code>janus.plugin.videoroom.cfg</code> " +
"configuration file? If not, make sure you copy the details of room <code>" + myroom + "</code> " +
"from that sample in your current configuration file, then restart Janus and try again."
);
} else {
bootbox.alert(msg["error"]);
}
}
}
}
if(jsep) {
Janus.debug("Handling SDP as well...", jsep);
sfutest.handleRemoteJsep({ jsep: jsep });
// Check if any of the media we wanted to publish has
// been rejected (e.g., wrong or unsupported codec)
let audio = msg["audio_codec"];
if(mystream && mystream.getAudioTracks() && mystream.getAudioTracks().length > 0 && !audio) {
// Audio has been rejected
toastr.warning("Our audio stream has been rejected, viewers won't hear us");
}
let video = msg["video_codec"];
if(mystream && mystream.getVideoTracks() && mystream.getVideoTracks().length > 0 && !video) {
// Video has been rejected
toastr.warning("Our video stream has been rejected, viewers won't see us");
// Hide the webcam video
$('#myvideo').addClass('hide');
$('#videolocal').prepend(
'<div class="no-video-container">' +
'<i class="fa-solid fa-video fa-xl no-video-icon" style="height: 100%;"></i>' +
'<span class="no-video-text" style="font-size: 16px;">Video rejected, no webcam</span>' +
'</div>');
}
}
},
onlocaltrack: function(track, on) {
Janus.debug(" ::: Got a local track event :::");
Janus.debug("Local track " + (on ? "added" : "removed") + ":", track);
// We use the track ID as name of the element, but it may contain invalid characters
let trackId = track.id.replace(/[{}]/g, "");
if(!on) {
// Track removed, get rid of the stream and the rendering
let stream = localTracks[trackId];
if(stream) {
try {
let tracks = stream.getTracks();
for(let i in tracks) {
let mst = tracks[i];
if(mst)
mst.stop();
}
} catch(e) {}
}
if(track.kind === "video") {
$('#myvideo' + trackId).remove();
localVideos--;
if(localVideos === 0) {
// No video, at least for now: show a placeholder
if($('#videolocal .no-video-container').length === 0) {
$('#videolocal').prepend(
'<div class="no-video-container">' +
'<i class="fa-solid fa-video fa-xl no-video-icon"></i>' +
'<span class="no-video-text">No webcam available</span>' +
'</div>');
}
}
}
delete localTracks[trackId];
return;
}
// If we're here, a new track was added
let stream = localTracks[trackId];
if(stream) {
// We've been here already
return;
}
$('#videos').removeClass('hide');
if($('#mute').length === 0) {
// Add a 'mute' button
$('#videolocal').append('<button class="btn btn-warning btn-xs" id="mute" style="position: absolute; bottom: 0px; left: 0px; margin: 15px;">Mute</button>');
$('#mute').click(toggleMute);
// Add an 'unpublish' button
$('#videolocal').append('<button class="btn btn-warning btn-xs" id="unpublish" style="position: absolute; bottom: 0px; right: 0px; margin: 15px;">Unpublish</button>');
$('#unpublish').click(unpublishOwnFeed);
}
if(track.kind === "audio") {
// We ignore local audio tracks, they'd generate echo anyway
if(localVideos === 0) {
// No video, at least for now: show a placeholder
if($('#videolocal .no-video-container').length === 0) {
$('#videolocal').prepend(
'<div class="no-video-container">' +
'<i class="fa-solid fa-video fa-xl no-video-icon"></i>' +
'<span class="no-video-text">No webcam available</span>' +
'</div>');
}
}
} else {
// New video track: create a stream out of it
localVideos++;
$('#videolocal .no-video-container').remove();
let stream = new MediaStream([track]);
localTracks[trackId] = stream;
Janus.log("Created local stream:", stream);
Janus.log(stream.getTracks());
Janus.log(stream.getVideoTracks());
$('#videolocal').prepend('<video class="rounded centered" id="myvideo' + trackId + '" width=100% autoplay playsinline muted="muted"/>');
Janus.attachMediaStream($('#myvideo' + trackId).get(0), stream);
}
if(sfutest.webrtcStuff.pc.iceConnectionState !== "completed" &&
sfutest.webrtcStuff.pc.iceConnectionState !== "connected") {
$("#videolocal").parent().parent().block({
message: '<b>Publishing...</b>',
css: {
border: 'none',
backgroundColor: 'transparent',
color: 'white'
}
});
}
},
// eslint-disable-next-line no-unused-vars
onremotetrack: function(track, mid, on) {
// The publisher stream is sendonly, we don't expect anything here
},
oncleanup: function() {
Janus.log(" ::: Got a cleanup notification: we are unpublished now :::");
mystream = null;
delete feedStreams[myid];
$('#videolocal').html('<button id="publish" class="btn btn-primary">Publish</button>');
$('#publish').click(function() { publishOwnFeed(true); });
$("#videolocal").parent().parent().unblock();
$('#bitrate').parent().parent().addClass('hide');
$('#bitrate a').unbind('click');
localTracks = {};
localVideos = 0;
}
});
},
error: function(error) {
Janus.error(error);
bootbox.alert(error, function() {
window.location.reload();
});
},
destroyed: function() {
window.location.reload();
}
});
});
}});
});
// eslint-disable-next-line no-unused-vars
function checkEnter(field, event) {
let theCode = event.keyCode ? event.keyCode : event.which ? event.which : event.charCode;
if(theCode == 13) {
registerUsername();
return false;
} else {
return true;
}
}
function registerUsername() {
if($('#username').length === 0) {
// Create fields to register
$('#register').click(registerUsername);
$('#username').focus();
} else {
// Try a registration
$('#username').attr('disabled', true);
$('#register').attr('disabled', true).unbind('click');
let username = $('#username').val();
if(username === "") {
$('#you')
.removeClass().addClass('badge bg-warning')
.html("Insert your display name (e.g., pippo)");
$('#username').removeAttr('disabled');
$('#register').removeAttr('disabled').click(registerUsername);
return;
}
if(/[^a-zA-Z0-9]/.test(username)) {
$('#you')
.removeClass().addClass('badge bg-warning')
.html('Input is not alphanumeric');
$('#username').removeAttr('disabled').val("");
$('#register').removeAttr('disabled').click(registerUsername);
return;
}
let register = {
request: "join",
room: myroom,
ptype: "publisher",
display: username
};
myusername = escapeXmlTags(username);
sfutest.send({ message: register });
}
}
function publishOwnFeed(useAudio) {
// Publish our stream
$('#publish').attr('disabled', true).unbind('click');
// We want sendonly audio and video (uncomment the data track
// too if you want to publish via datachannels as well)
let tracks = [];
if(useAudio)
tracks.push({ type: 'audio', capture: true, recv: false });
tracks.push({ type: 'video', capture: true, recv: false,
// We may need to enable simulcast or SVC on the video track
simulcast: doSimulcast,
// We only support SVC for VP9 and (still WIP) AV1
svc: ((vcodec === 'vp9' || vcodec === 'av1') && doSvc) ? doSvc : null
});
//~ tracks.push({ type: 'data' });
sfutest.createOffer(
{
tracks: tracks,
success: function(jsep) {
Janus.debug("Got publisher SDP!");
Janus.debug(jsep);
let publish = { request: "configure", audio: useAudio, video: true };
// You can force a specific codec to use when publishing by using the
// audiocodec and videocodec properties, for instance:
// publish["audiocodec"] = "opus"
// to force Opus as the audio codec to use, or:
// publish["videocodec"] = "vp9"
// to force VP9 as the videocodec to use. In both case, though, forcing
// a codec will only work if: (1) the codec is actually in the SDP (and
// so the browser supports it), and (2) the codec is in the list of
// allowed codecs in a room. With respect to the point (2) above,
// refer to the text in janus.plugin.videoroom.cfg for more details
if(acodec)
publish["audiocodec"] = acodec;
if(vcodec)
publish["videocodec"] = vcodec;
sfutest.send({ message: publish, jsep: jsep });
},
error: function(error) {
Janus.error("WebRTC error:", error);
if (useAudio) {
publishOwnFeed(false);
} else {
bootbox.alert("WebRTC error... " + error.message);
$('#publish').removeAttr('disabled').click(function() { publishOwnFeed(true); });
}
}
});
}
function toggleMute() {
let muted = sfutest.isAudioMuted();
Janus.log((muted ? "Unmuting" : "Muting") + " local stream...");
if(muted)
sfutest.unmuteAudio();
else
sfutest.muteAudio();
muted = sfutest.isAudioMuted();
$('#mute').html(muted ? "Unmute" : "Mute");
}
function unpublishOwnFeed() {
// Unpublish our stream
$('#unpublish').attr('disabled', true).unbind('click');
let unpublish = { request: "unpublish" };
sfutest.send({ message: unpublish });
}
var creatingSubscription = false;
function subscribeTo(sources) {
// Check if we're still creating the subscription handle
if(creatingSubscription) {
// Still working on the handle, send this request later when it's ready
setTimeout(function() {
subscribeTo(sources);
}, 500);
return;
}
// If we already have a working subscription handle, just update that one
if(remoteFeed) {
// Prepare the streams to subscribe to, as an array: we have the list of
// streams the feeds are publishing, so we can choose what to pick or skip
let added = null, removed = null;
for(let s in sources) {
let streams = sources[s];
for(let i in streams) {
let stream = streams[i];
// If the publisher is VP8/VP9 and this is an older Safari, let's avoid video
if(stream.type === "video" && Janus.webRTCAdapter.browserDetails.browser === "safari" &&
((stream.codec === "vp9" && !Janus.safariVp9) || (stream.codec === "vp8" && !Janus.safariVp8))) {
toastr.warning("Publisher is using " + stream.codec.toUpperCase +
", but Safari doesn't support it: disabling video stream #" + stream.mindex);
continue;
}
if(stream.disabled) {
Janus.log("Disabled stream:", stream);
// Unsubscribe
if(!removed)
removed = [];
removed.push({
feed: stream.id, // This is mandatory
mid: stream.mid // This is optional (all streams, if missing)
});
delete subscriptions[stream.id][stream.mid];
continue;
}
if(subscriptions[stream.id] && subscriptions[stream.id][stream.mid]) {
Janus.log("Already subscribed to stream, skipping:", stream);
continue;
}
// Find an empty slot in the UI for each new source
if(!feedStreams[stream.id].slot) {
let slot;
for(let i=1;i<6;i++) {
if(!feeds[i]) {
slot = i;
feeds[slot] = stream.id;
feedStreams[stream.id].slot = slot;
feedStreams[stream.id].remoteVideos = 0;
$('#remote' + slot).removeClass('hide').html(escapeXmlTags(stream.display)).removeClass('hide');
break;
}
}
}
// Subscribe
if(!added)
added = [];
added.push({
feed: stream.id, // This is mandatory
mid: stream.mid // This is optional (all streams, if missing)
});
if(!subscriptions[stream.id])
subscriptions[stream.id] = {};
subscriptions[stream.id][stream.mid] = true;
}
}
if((!added || added.length === 0) && (!removed || removed.length === 0)) {
// Nothing to do
return;
}
let update = { request: 'update' };
if(added)
update.subscribe = added;
if(removed)
update.unsubscribe = removed;
remoteFeed.send({ message: update });
// Nothing else we need to do
return;
}
// If we got here, we're creating a new handle for the subscriptions (we only need one)
creatingSubscription = true;
janus.attach(
{
plugin: "janus.plugin.videoroom",
opaqueId: opaqueId,
success: function(pluginHandle) {
remoteFeed = pluginHandle;
remoteTracks = {};
Janus.log("Plugin attached! (" + remoteFeed.getPlugin() + ", id=" + remoteFeed.getId() + ")");
Janus.log(" -- This is a multistream subscriber");
// Prepare the streams to subscribe to, as an array: we have the list of
// streams the feed is publishing, so we can choose what to pick or skip
let subscription = [];
for(let s in sources) {
let streams = sources[s];
for(let i in streams) {
let stream = streams[i];
// If the publisher is VP8/VP9 and this is an older Safari, let's avoid video
if(stream.type === "video" && Janus.webRTCAdapter.browserDetails.browser === "safari" &&
((stream.codec === "vp9" && !Janus.safariVp9) || (stream.codec === "vp8" && !Janus.safariVp8))) {
toastr.warning("Publisher is using " + stream.codec.toUpperCase +
", but Safari doesn't support it: disabling video stream #" + stream.mindex);
continue;
}
if(stream.disabled) {
Janus.log("Disabled stream:", stream);
// TODO Skipping for now, we should unsubscribe
continue;
}
Janus.log("Subscribed to " + stream.id + "/" + stream.mid + "?", subscriptions);
if(subscriptions[stream.id] && subscriptions[stream.id][stream.mid]) {
Janus.log("Already subscribed to stream, skipping:", stream);
continue;
}
// Find an empty slot in the UI for each new source
if(!feedStreams[stream.id].slot) {
let slot;
for(let i=1;i<6;i++) {
if(!feeds[i]) {
slot = i;
feeds[slot] = stream.id;
feedStreams[stream.id].slot = slot;
feedStreams[stream.id].remoteVideos = 0;
$('#remote' + slot).removeClass('hide').html(escapeXmlTags(stream.display)).removeClass('hide');
break;
}
}
}
subscription.push({
feed: stream.id, // This is mandatory
mid: stream.mid // This is optional (all streams, if missing)
});
if(!subscriptions[stream.id])
subscriptions[stream.id] = {};
subscriptions[stream.id][stream.mid] = true;
}
}
// We wait for the plugin to send us an offer
let subscribe = {
request: "join",
room: myroom,
ptype: "subscriber",
streams: subscription,
use_msid: use_msid,
private_id: mypvtid
};
remoteFeed.send({ message: subscribe });
},
error: function(error) {
Janus.error(" -- Error attaching plugin...", error);
bootbox.alert("Error attaching plugin... " + error);
},
iceState: function(state) {
Janus.log("ICE state (remote feed) changed to " + state);
},
webrtcState: function(on) {
Janus.log("Janus says this WebRTC PeerConnection (remote feed) is " + (on ? "up" : "down") + " now");
},
slowLink: function(uplink, lost, mid) {
Janus.warn("Janus reports problems " + (uplink ? "sending" : "receiving") +
" packets on mid " + mid + " (" + lost + " lost packets)");
},
onmessage: function(msg, jsep) {
Janus.debug(" ::: Got a message (subscriber) :::", msg);
let event = msg["videoroom"];
Janus.debug("Event: " + event);
if(msg["error"]) {
bootbox.alert(msg["error"]);
} else if(event) {
if(event === "attached") {
// Now we have a working subscription, next requests will update this one
creatingSubscription = false;
Janus.log("Successfully attached to feed in room " + msg["room"]);
} else if(event === "event") {
// Check if we got an event on a simulcast-related event from this publisher
let mid = msg["mid"];
let substream = msg["substream"];
let temporal = msg["temporal"];
if((substream !== null && substream !== undefined) || (temporal !== null && temporal !== undefined)) {
// Check which this feed this refers to
let slot = slots[mid];
if(!simulcastStarted[slot]) {
simulcastStarted[slot] = true;
// Add some new buttons
addSimulcastSvcButtons(slot, true);
}
// We just received notice that there's been a switch, update the buttons
updateSimulcastSvcButtons(slot, substream, temporal);
}
// Or maybe SVC?
let spatial = msg["spatial_layer"];
temporal = msg["temporal_layer"];
if((spatial !== null && spatial !== undefined) || (temporal !== null && temporal !== undefined)) {
let slot = slots[mid];
if(!svcStarted[slot]) {
svcStarted[slot] = true;
// Add some new buttons
addSimulcastSvcButtons(slot, true);
}
// We just received notice that there's been a switch, update the buttons
updateSimulcastSvcButtons(slot, spatial, temporal);
}
} else {
// What has just happened?
}
}
if(msg["streams"]) {
// Update map of subscriptions by mid
for(let i in msg["streams"]) {
let mid = msg["streams"][i]["mid"];
subStreams[mid] = msg["streams"][i];
let feed = feedStreams[msg["streams"][i]["feed_id"]];
if(feed && feed.slot) {
slots[mid] = feed.slot;
mids[feed.slot] = mid;
}
}
}
if(jsep) {
Janus.debug("Handling SDP as well...", jsep);
// Answer and attach
remoteFeed.createAnswer(
{
jsep: jsep,
// We only specify data channels here, as this way in
// case they were offered we'll enable them. Since we
// don't mention audio or video tracks, we autoaccept them
// as recvonly (since we won't capture anything ourselves)
tracks: [
{ type: 'data' }
],
success: function(jsep) {
Janus.debug("Got SDP!");
Janus.debug(jsep);
let body = { request: "start", room: myroom };
remoteFeed.send({ message: body, jsep: jsep });
},
error: function(error) {
Janus.error("WebRTC error:", error);
bootbox.alert("WebRTC error... " + error.message);
}
});
}
},
// eslint-disable-next-line no-unused-vars
onlocaltrack: function(track, on) {
// The subscriber stream is recvonly, we don't expect anything here
},
onremotetrack: function(track, mid, on, metadata) {
Janus.debug(
"Remote track (mid=" + mid + ") " +
(on ? "added" : "removed") +
(metadata ? " (" + metadata.reason + ") ": "") + ":", track
);
// Which publisher are we getting on this mid?
let sub = subStreams[mid];
let feed = feedStreams[sub.feed_id];
Janus.debug(" >> This track is coming from feed " + sub.feed_id + ":", feed);
let slot = slots[mid];
if(feed && !slot) {
slot = feed.slot;
slots[mid] = feed.slot;
mids[feed.slot] = mid;
}
Janus.debug(" >> mid " + mid + " is in slot " + slot);
if(!on) {
// Track removed, get rid of the stream and the rendering
$('#remotevideo' + slot + '-' + mid).remove();
if(track.kind === "video" && feed) {
feed.remoteVideos--;
if(feed.remoteVideos === 0) {
// No video, at least for now: show a placeholder
if($('#videoremote' + slot + ' .no-video-container').length === 0) {
$('#videoremote' + slot).append(
'<div class="no-video-container">' +
'<i class="fa-solid fa-video fa-xl no-video-icon"></i>' +
'<span class="no-video-text">No remote video available</span>' +
'</div>');
}
}
}
delete remoteTracks[mid];
delete slots[mid];
delete mids[slot];
return;
}
// If we're here, a new track was added
if($('#remotevideo' + slot + '-' + mid).length > 0)
return;
if(track.kind === "audio") {
// New audio track: create a stream out of it, and use a hidden <audio> element
let stream = new MediaStream([track]);
remoteTracks[mid] = stream;
Janus.log("Created remote audio stream:", stream);
$('#videoremote' + slot).append('<audio class="hide" id="remotevideo' + slot + '-' + mid + '" autoplay playsinline/>');
Janus.attachMediaStream($('#remotevideo' + slot + '-' + mid).get(0), stream);
if(feed.remoteVideos === 0) {
// No video, at least for now: show a placeholder
if($('#videoremote' + slot + ' .no-video-container').length === 0) {
$('#videoremote' + slot).append(
'<div class="no-video-container">' +
'<i class="fa-solid fa-video fa-xl no-video-icon"></i>' +
'<span class="no-video-text">No remote video available</span>' +
'</div>');
}
}
} else {
// New video track: create a stream out of it
feed.remoteVideos++;
$('#videoremote' + slot + ' .no-video-container').remove();
let stream = new MediaStream([track]);
remoteTracks[mid] = stream;
Janus.log("Created remote video stream:", stream);
$('#videoremote' + slot).append('<video class="rounded centered" id="remotevideo' + slot + '-' + mid + '" width=100% autoplay playsinline/>');
$('#videoremote' + slot).append(
'<span class="badge bg-primary hide" id="curres'+slot+'" style="position: absolute; bottom: 0px; left: 0px; margin: 15px;"></span>' +
'<span class="badge bg-info hide" id="curbitrate'+slot+'" style="position: absolute; bottom: 0px; right: 0px; margin: 15px;"></span>');
Janus.attachMediaStream($('#remotevideo' + slot + '-' + mid).get(0), stream);
// Note: we'll need this for additional videos too
if(!bitrateTimer[slot]) {
$('#curbitrate' + slot).removeClass('hide');
bitrateTimer[slot] = setInterval(function() {
if(!$("#videoremote" + slot + ' video').get(0))
return;
// Display updated bitrate, if supported
let bitrate = remoteFeed.getBitrate(mid);
$('#curbitrate' + slot).text(bitrate);
// Check if the resolution changed too
let width = $("#videoremote" + slot + ' video').get(0).videoWidth;
let height = $("#videoremote" + slot + ' video').get(0).videoHeight;
if(width > 0 && height > 0) {
let res = width + 'x' + height;
if(simulcastStarted[slot])
res += ' (simulcast)';
else if(svcStarted[slot])
res += ' (SVC)';
$('#curres' + slot).removeClass('hide').text(res).removeClass('hide');
}
}, 1000);
}
}
},
oncleanup: function() {
Janus.log(" ::: Got a cleanup notification (remote feed) :::");
for(let i=1;i<6;i++) {
$('#videoremote'+i).empty();
if(bitrateTimer[i])
clearInterval(bitrateTimer[i]);
bitrateTimer[i] = null;
feedStreams[i].simulcastStarted = false;
feedStreams[i].svcStarted = false;
feedStreams[i].remoteVideos = 0;
$('#simulcast'+i).remove();
}
remoteTracks = {};
}
});
}
function unsubscribeFrom(id) {
// Unsubscribe from this publisher
let feed = feedStreams[id];
if(!feed)
return;
Janus.debug("Feed " + id + " (" + feed.display + ") has left the room, detaching");
if(bitrateTimer[feed.slot])
clearInterval(bitrateTimer[feed.slot]);
bitrateTimer[feed.slot] = null;
$('#remote' + feed.slot).empty().addClass('hide');
$('#videoremote' + feed.slot).empty();
delete simulcastStarted[feed.slot];
delete svcStarted[feed.slot];
$('#simulcast' + feed.slot).remove();
delete feeds[feed.slot];
feeds.slot = 0;
delete feedStreams[id];
// Send an unsubscribe request
let unsubscribe = {
request: "unsubscribe",
streams: [{ feed: id }]
};
if(remoteFeed != null)
remoteFeed.send({ message: unsubscribe });
delete subscriptions[id];
}
// Helper to parse query string
function getQueryStringValue(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
let regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
// Helper to escape XML tags
function escapeXmlTags(value) {
if(value) {
let escapedValue = value.replace(new RegExp('<', 'g'), '<');
escapedValue = escapedValue.replace(new RegExp('>', 'g'), '>');
return escapedValue;
}
}
// Helpers to create Simulcast- or SVC-related UI, if enabled
function addSimulcastSvcButtons(feed, temporal) {
let index = feed;
let simulcast = simulcastStarted[index];
let what = (simulcast ? 'simulcast' : 'SVC');
let layer = (simulcast ? 'substream' : 'layer');
$('#remote'+index).parent().append(
'<div id="simulcast'+index+'" class="btn-group-vertical btn-group-xs top-right">' +
' <div class="btn-group btn-group-xs d-flex" style="width: 100%">' +
' <button id="sl'+index+'-2" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Switch to higher quality">SL 2</button>' +
' <button id="sl'+index+'-1" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Switch to normal quality">SL 1</button>' +
' <button id="sl'+index+'-0" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Switch to lower quality">SL 0</button>' +
' </div>' +
' <div class="btn-group btn-group-xs d-flex hide" style="width: 100%">' +
' <button id="tl'+index+'-2" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Cap to temporal layer 2">TL 2</button>' +
' <button id="tl'+index+'-1" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Cap to temporal layer 1">TL 1</button>' +
' <button id="tl'+index+'-0" type="button" class="btn btn-primary" data-bs-toggle="tooltip" title="Cap to temporal layer 0">TL 0</button>' +
' </div>' +
'</div>'
);
if(simulcast && Janus.webRTCAdapter.browserDetails.browser !== "firefox") {
// Chromium-based browsers only have two temporal layers, when doing simulcast
$('#tl'+index+'-2').remove();
}
// Enable the simulcast selection buttons
$('#sl' + index + '-0').removeClass('btn-primary btn-success').addClass('btn-primary')
.unbind('click').click(function() {
let index = $(this).attr('id').split('sl')[1].split('-')[0];
toastr.info("Switching " + what + " " + layer + " (mid=" + mids[index] + "), wait for it... (lower quality)", null, {timeOut: 2000});
if(!$('#sl' + index + '-2').hasClass('btn-success'))
$('#sl' + index + '-2').removeClass('btn-primary btn-info').addClass('btn-primary');
if(!$('#sl' + index + '-1').hasClass('btn-success'))
$('#sl' + index + '-1').removeClass('btn-primary btn-info').addClass('btn-primary');
$('#sl' + index + '-0').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
if(simulcastStarted[index])
remoteFeed.send({ message: { request: "configure", mid: mids[index], substream: 0 }});
else
remoteFeed.send({ message: { request: "configure", mid: mids[index], spatial_layer: 0 }});
});
$('#sl' + index + '-1').removeClass('btn-primary btn-success').addClass('btn-primary')
.unbind('click').click(function() {
let index = $(this).attr('id').split('sl')[1].split('-')[0];
toastr.info("Switching " + what + " " + layer + " (mid=" + mids[index] + "), wait for it... (normal quality)", null, {timeOut: 2000});
if(!$('#sl' + index + '-2').hasClass('btn-success'))
$('#sl' + index + '-2').removeClass('btn-primary btn-info').addClass('btn-primary');
$('#sl' + index + '-1').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
if(!$('#sl' + index + '-0').hasClass('btn-success'))
$('#sl' + index + '-0').removeClass('btn-primary btn-info').addClass('btn-primary');
if(simulcastStarted[index])
remoteFeed.send({ message: { request: "configure", mid: mids[index], substream: 1 }});
else
remoteFeed.send({ message: { request: "configure", mid: mids[index], spatial_layer: 1 }});
});
$('#sl' + index + '-2').removeClass('btn-primary btn-success').addClass('btn-primary')
.unbind('click').click(function() {
let index = $(this).attr('id').split('sl')[1].split('-')[0];
toastr.info("Switching " + what + " " + layer + " (mid=" + mids[index] + "), wait for it... (higher quality)", null, {timeOut: 2000});
$('#sl' + index + '-2').removeClass('btn-primary btn-info btn-success').addClass('btn-info');
if(!$('#sl' + index + '-1').hasClass('btn-success'))
$('#sl' + index + '-1').removeClass('btn-primary btn-info').addClass('btn-primary');
if(!$('#sl' + index + '-0').hasClass('btn-success'))
$('#sl' + index + '-0').removeClass('btn-primary btn-info').addClass('btn-primary');
if(simulcastStarted[index])
remoteFeed.send({ message: { request: "configure", mid: mids[index], substream: 2 }});
else
remoteFeed.send({ message: { request: "configure", mid: mids[index], spatial_layer: 2 }});
});
if(!temporal) // No temporal layer support
return;
$('#tl' + index + '-0').parent().removeClass('hide');
$('#tl' + index + '-0').removeClass('btn-primary btn-success').addClass('btn-primary')
.unbind('click').click(function() {
let index = $(this).attr('id').split('tl')[1].split('-')[0];