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jitsi-arena.js
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/* global $, JitsiMeetJS */
// These match config info on Jitsi Meet server (oz.andrew.cmu.edu)
// in lines 7-37 of file /etc/jitsi/meet/oz.andrew.cmu.edu-config.js
const jitsiServer = 'mr.andrew.cmu.edu';
const arenaConference = globals.scenenameParam.toLowerCase();
const BIGSCREEN = "bigscreen"
const DISPLAYNAME = "arena_screen_share"
const options = {
hosts: {
domain: jitsiServer,
muc: 'conference.' + jitsiServer // FIXME: use XEP-0030
},
bosh: '//' + jitsiServer + '/http-bind', // FIXME: use xep-0156 for that
// The name of client node advertised in XEP-0115 'c' stanza
clientNode: 'http://jitsi.org/jitsimeet'
};
const confOptions = {
openBridgeChannel: true,
};
var remoteAudioTracks = {};
// Jitsi globals
let connection = null;
let isJoined = false;
let conference = null;
let jitsiAudioTrack;
let jitsiVideoTrack;
let listener = null;
let localTracks = []; // just our set of audio,video tracks
const remoteTracks = {}; // it's a map of arrays of tracks
function connectArena(participantId, trackType) {
globals.jitsiId = participantId;
console.log("connectArena: " + participantId, trackType);
}
/**
* Handles local tracks.
* @param tracks Array with JitsiTrack objects
*/
function onLocalTracks(tracks) {
localTracks = tracks;
for (let i = 0; i < localTracks.length; i++) {
const track = localTracks[i];
track.addEventListener(
JitsiMeetJS.events.track.TRACK_AUDIO_LEVEL_CHANGED,
audioLevel => console.log(`Audio Level local: ${audioLevel}`));
track.addEventListener(
JitsiMeetJS.events.track.TRACK_MUTE_CHANGED,
() => console.log('local track state changed'));
track.addEventListener(
JitsiMeetJS.events.track.LOCAL_TRACK_STOPPED,
() => console.log('local track stopped'));
track.addEventListener(
JitsiMeetJS.events.track.TRACK_AUDIO_OUTPUT_CHANGED,
deviceId =>
console.log(
`track audio output device was changed to ${deviceId}`));
// append our own video/audio elements to <body>
if (track.getType() === 'video') {
//$('body').append(`<video autoplay='1' id='localVideo${i}' />`);
// instead use already defined e.g. <video id="localVideo" ...>
track.attach($(`#localVideo`)[0]);
jitsiVideoTrack = track;
} else if (track.getType() === 'audio') {
//$('body').append(`<audio autoplay='1' muted='true' id='localAudio${i}' />`);
// instead use already defined in index.html <audio id="aud0" ...>
// track.attach($(`#aud0`)[0]);
jitsiAudioTrack = track;
}
if (isJoined) { // mobile only?
conference.addTrack(track);
connectArena(conference.myUserId(), track.getType());
}
}
if (jitsiAudioTrack) jitsiAudioTrack.mute();
if (jitsiVideoTrack) jitsiVideoTrack.mute();
}
let leftRightToggle = true, screenPlaneLeftIdx = 0, screenPlaneRightIdx = 0;
function createScreenSharePlane(id) {
let planeElement = document.createElement('a-plane');
planeElement.setAttribute("id", id);
planeElement.setAttribute("muted", "false");
planeElement.setAttribute("autoplay", "true");
planeElement.setAttribute("playsinline", "true");
planeElement.setAttribute("material", "shader: flat; side: double");
planeElement.setAttribute("scale", "8 6 0.01");
if (leftRightToggle) {
planeElement.setAttribute("position", 8.1*screenPlaneRightIdx+" 3.1 -3");
screenPlaneRightIdx++;
}
else {
planeElement.setAttribute("position", 8.1*-screenPlaneLeftIdx+" 3.1 -3");
screenPlaneLeftIdx++;
}
leftRightToggle = !leftRightToggle;
globals.sceneObjects.scene.appendChild(planeElement);
return planeElement;
}
/**
* Handles remote tracks
* @param track JitsiTrack object
*/
function onRemoteTrack(track) {
if (track.isLocal()) {
return;
}
const participant = track.getParticipantId();
if (!remoteTracks[participant]) { // new participant
remoteTracks[participant] = [null, null]; // create array to hold their tracks
}
// remoteTracks[participant].push(track)
if (track.getType() == "audio") {
if (remoteTracks[participant][0]) remoteTracks[participant][0].dispose();
remoteTracks[participant][0] = track;
}
else if (track.getType() == "video") {
if (remoteTracks[participant][1]) remoteTracks[participant][1].dispose();
remoteTracks[participant][1] = track;
}
track.addEventListener(
JitsiMeetJS.events.track.TRACK_AUDIO_LEVEL_CHANGED,
audioLevel => console.log(`Audio Level remote: ${audioLevel}`));
track.addEventListener(
JitsiMeetJS.events.track.TRACK_MUTE_CHANGED,
() => {
//console.log('remote track muted')
});
track.addEventListener(
JitsiMeetJS.events.track.LOCAL_TRACK_STOPPED,
() => console.log('remote track stopped'));
track.addEventListener(JitsiMeetJS.events.track.TRACK_AUDIO_OUTPUT_CHANGED,
deviceId =>
console.log(
`track audio output device was changed to ${deviceId}`));
const displayName = conference.getParticipantById(participant)._displayName;
const videoID = `video${participant}`;
if (track.getType() === 'audio') {
if (displayName && displayName.includes(DISPLAYNAME)) {
let audioStream = new MediaStream();
audioStream.addTrack(remoteTracks[participant][0].track);
let sceneEl = globals.sceneObjects.scene;
let listener = null;
if (sceneEl.audioListener) {
listener = sceneEl.audioListener;
} else {
listener = new THREE.AudioListener();
let camEl = globals.sceneObjects.myCamera.object3D;
camEl.add(listener);
globals.audioListener = listener;
sceneEl.audioListener = listener;
}
let audioSource = new THREE.PositionalAudio(listener);
audioSource.setMediaStreamSource(audioStream);
audioSource.setRefDistance(1); // L-R panning
audioSource.setRolloffFactor(1);
const video = $(`#${videoID}`);
video.on('loadeddata', (e) => {
const screenShareID = displayName+participant;
let planeElement = document.getElementById(screenShareID);
if (!planeElement) {
planeElement = createScreenSharePlane(screenShareID);
}
// add to scene
planeElement.object3D.add(audioSource);
remoteTracks[participant].screenShareID = screenShareID;
});
}
}
else { // video
// use already existing video element e.g. video<jitsi_id>
if (!document.getElementById(videoID)) { // create
$('a-assets').append(
`<video autoplay='1' id='${videoID}'/>` );
}
track.attach($(`#${videoID}`)[0]);
if (displayName && displayName.includes(DISPLAYNAME)) {
const video = $(`#${videoID}`);
video.on('loadeddata', (e) => {
const screenShareID = displayName+participant;
let planeElement = document.getElementById(screenShareID);
if (!planeElement) {
planeElement = createScreenSharePlane(screenShareID);
}
planeElement.setAttribute("src", "#"+videoID);
});
}
}
}
/**
* That function is executed when the conference is joined
*/
function onConferenceJoined() {
isJoined = true;
console.log('Joined conf! localTracks.length: ', localTracks.length);
if (localTracks.length == 0) {
console.log("NO LOCAL TRACKS but UserId is: ", conference.myUserId());
connectArena(conference.myUserId(), '');
} else {
for (let i = 0; i < localTracks.length; i++) {
track = localTracks[i];
conference.addTrack(track);
// connect to ARENA; draw media button(s)
connectArena(conference.myUserId(), track.getType()); // desktop only?
}
}
}
/**
* @param id
*/
function onUserLeft(id) {
console.log('user left:', id);
if (!remoteTracks[id]) return;
if (remoteTracks[id].screenShareID) {
$(`#${remoteTracks[id].screenShareID}`).remove();
}
$(`#video${id}`).remove();
delete remoteTracks[id];
}
function publishJitsiArenaMessage() {
let msg = {
object_id: globals.camName,
jitsiId: globals.jitsiId,
hasVideo: globals.hasVideo,
hasAudio: globals.hasAudio,
activeSpeaker: globals.activeSpeaker,
action: 'create',
type: 'object',
data: {
object_type: 'videoconf',
}
};
publish(globals.outputTopic + globals.camName, msg);
}
/**
* That function is called when connection is established successfully
*/
function onConnectionSuccess() {
conference = connection.initJitsiConference(arenaConference, confOptions);
conference.on(JitsiMeetJS.events.conference.TRACK_ADDED, onRemoteTrack);
conference.on(JitsiMeetJS.events.conference.TRACK_REMOVED, track => {
console.log(`track removed!!!${track}`);
});
conference.on(
JitsiMeetJS.events.conference.CONFERENCE_JOINED,
onConferenceJoined);
conference.on(JitsiMeetJS.events.conference.USER_JOINED, id => {
console.log('New user joined:', id);
remoteTracks[id] = [null, null]; // create an array to hold tracks of new user
});
conference.on(JitsiMeetJS.events.conference.USER_LEFT, onUserLeft);
conference.on(JitsiMeetJS.events.conference.TRACK_MUTE_CHANGED, track => {
// console.log(`${track.getType()} - ${track.isMuted()}`);
});
conference.on(JitsiMeetJS.events.conference.DOMINANT_SPEAKER_CHANGED, id => {
console.log(`(conference) Dominant Speaker ID: ${id}`)
globals.activeSpeaker = id;
publishJitsiArenaMessage();
});
conference.on(
JitsiMeetJS.events.conference.DISPLAY_NAME_CHANGED,
(userID, displayName) => console.log(`${userID} - ${displayName}`));
conference.on(
JitsiMeetJS.events.conference.TRACK_AUDIO_LEVEL_CHANGED,
(userID, audioLevel) => console.log(`${userID} - ${audioLevel}`));
conference.on(
JitsiMeetJS.events.conference.PHONE_NUMBER_CHANGED,
() => console.log(`${conference.getPhoneNumber()} - ${conference.getPhonePin()}`));
// set the (unique) ARENA user's name
conference.setDisplayName(globals.camName);
conference.join(); // conference.join(password);
globals.chromeSpatialAudioOn = false;
// only tested and working on mac on chrome
navigator.mediaDevices.enumerateDevices()
.then(function(devices) {
const headphonesConnected = devices
.filter(device => /audio\w+/.test(device.kind))
.find(device => device.label.toLowerCase().includes('head'));
globals.chromeSpatialAudioOn = !!headphonesConnected;
});
}
/**
* This function is called when the connection fails.
*/
function onConnectionFailed() {
console.error('Connection Failed!');
}
/**
* This function is called when device list changes
*/
function onDeviceListChanged(devices) {
console.info('current devices', devices);
}
/**
* This function is called when we disconnect.
*/
function disconnect() {
console.log('disconnected!');
connection.removeEventListener(
JitsiMeetJS.events.connection.CONNECTION_ESTABLISHED,
onConnectionSuccess);
connection.removeEventListener(
JitsiMeetJS.events.connection.CONNECTION_FAILED,
onConnectionFailed);
connection.removeEventListener(
JitsiMeetJS.events.connection.CONNECTION_DISCONNECTED,
disconnect);
}
/**
*
*/
function unload() {
for (let i = 0; i < localTracks.length; i++) {
localTracks[i].dispose();
}
conference.leave();
connection.disconnect();
}
let isVideo = true;
/**
*
*/
function switchVideo() { // eslint-disable-line no-unused-vars
isVideo = !isVideo;
if (localTracks[1]) {
localTracks[1].dispose();
localTracks.pop();
}
JitsiMeetJS.createLocalTracks({
devices: [isVideo ? 'video' : 'desktop']
})
.then(tracks => {
localTracks.push(tracks[0]);
localTracks[1].addEventListener(
JitsiMeetJS.events.track.TRACK_MUTE_CHANGED,
() => console.log('local track state changed'));
localTracks[1].addEventListener(
JitsiMeetJS.events.track.LOCAL_TRACK_STOPPED,
() => console.log('local track stopped'));
localTracks[1].attach($('#localVideo')[0]);
conference.addTrack(localTracks[1]);
})
.catch(error => console.log(error));
}
$(window).bind('beforeunload', unload);
$(window).bind('unload', unload);
JitsiMeetJS.setLogLevel(JitsiMeetJS.logLevels.ERROR);
const initOptions = {
disableAudioLevels: true
};
// MAIN START
JitsiMeetJS.init(initOptions);
connection = new JitsiMeetJS.JitsiConnection(null, null, options);
connection.addEventListener(
JitsiMeetJS.events.connection.DOMINANT_SPEAKER_CHANGED,
id => console.log(`(connection) Dominant Speaker ID: ${id}`));
connection.addEventListener(
JitsiMeetJS.events.connection.CONNECTION_ESTABLISHED,
onConnectionSuccess);
connection.addEventListener(
JitsiMeetJS.events.connection.CONNECTION_FAILED,
onConnectionFailed);
connection.addEventListener(
JitsiMeetJS.events.connection.CONNECTION_DISCONNECTED,
disconnect);
JitsiMeetJS.mediaDevices.addEventListener(
JitsiMeetJS.events.mediaDevices.DEVICE_LIST_CHANGED,
onDeviceListChanged);
connection.connect();
JitsiMeetJS.createLocalTracks({
devices: ['audio', 'video']
})
.then(onLocalTracks)
.catch(error => {
throw error;
});