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rtc-controller.js
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307 lines (267 loc) · 9.12 KB
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/* WebRTC PubNub Controller
* Author: Kevin Gleason
* Date: July 15, 2015
* Description: A wrapper library for the PubNub WebRTC SDK to make simple video
* functions a breeze to implement.
*
* TODO: make getVideoElement a native non-jQuery function
*
*/
(function(){
var CONTROLLER = window.CONTROLLER = function(phone){
if (!window.phone) window.phone = phone;
var ctrlChan = controlChannel(phone.number());
var pubnub = phone.pubnub;
var userArray = [];
subscribe();
var CONTROLLER = function(){};
// Get the control version of a users channel
function controlChannel(number){
return number + "-ctrl";
}
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Setup Phone and Session callbacks.
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
var readycb = function(){};
var unablecb = function(){};
var receivecb = function(session){};
var videotogglecb = function(session, isEnabled){};
var audiotogglecb = function(session, isEnabled){};
CONTROLLER.ready = function(cb) { readycb = cb };
CONTROLLER.unable = function(cb) { unablecb = cb };
CONTROLLER.receive = function(cb) { receivecb = cb };
CONTROLLER.videoToggled = function(cb) { videotogglecb = cb };
CONTROLLER.audioToggled = function(cb) { audiotogglecb = cb };
phone.ready(function(){ readycb() });
phone.unable(function(){ unablecb() });
phone.receive(function(session){
manage_users(session);
receivecb(session);
});
/* Require some boolean form of authentication to accept a call
var authcb = function(){};
CONTROLLER.answerCall = function(session, auth, cb){
auth(acceptCall(session, cb), session);
}
function acceptCall(session, cb){ // Return function bound to session that needs a boolean.
return function(accept) {
if (accept) cb(session);
else phone.hangup(session.number);
}
}*/
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Setup broadcasting, your screen to all.
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
var streamreceivecb = function(m){};
var streamprescb = function(m){};
var stream_name = "";
CONTROLLER.streamPresence = function(cb){ streamprescb = cb; }
CONTROLLER.streamReceive = function(cb){ streamreceivecb = cb; }
function broadcast(vid){
var video = document.createElement('video');
video.src = URL.createObjectURL(phone.mystream);
video.volume = 0.0;
video.play();
video.setAttribute( 'autoplay', 'autoplay' );
video.setAttribute( 'data-number', phone.number() );
vid.style.cssText ="-moz-transform: scale(-1, 1); \
-webkit-transform: scale(-1, 1); -o-transform: scale(-1, 1); \
transform: scale(-1, 1); filter: FlipH;";
vid.appendChild(video);
};
function stream_subscribe(name){
var ch = (name ? name : phone.number()) + "-stream";
pubnub.subscribe({
channel : ch,
message : streamreceivecb,
presence : streamprescb,
connect : function() { stream_name = ch; console.log("Streaming channel " + ch); }
});
}
CONTROLLER.stream = function(){
stream_subscribe();
}
CONTROLLER.joinStream = function(name){
stream_subscribe(name);
publishCtrl(controlChannel(name), "userJoin", phone.number());
}
CONTROLLER.leaveStream = function(name){
var ch = (name ? name : phone.number()) + "-stream";
pubnub.unsubscribe({
channel : ch,
});
}
CONTROLLER.send = function( message, number ) {
if (phone.oneway) return stream_message(message);
phone.send(message, number);
};
function stream_message(message){
if (!stream_name) return; // Not in a stream
pubnub.publish({
channel: stream_name,
message: msg,
callback : function(m){console.log(m)}
});
}
// Give it a div and it will set up the thumbnail image
CONTROLLER.addLocalStream = function(streamHolder){
broadcast(streamHolder);
};
CONTROLLER.dial = function(number, servers){ // Authenticate here??
var session = phone.dial(number, servers); // Dial Number
if (!session) return; // No Duplicate Dialing Allowed
};
CONTROLLER.hangup = function(number){
if (number) {
if (phone.oneway) CONTROLLER.leaveStream(number);
phone.hangup(number);
return publishCtrl(controlChannel(number), "userLeave", phone.number())
}
if (phone.oneway) CONTROLLER.leaveStream();
phone.hangup();
for (var i=0; i < userArray.length; i++) {
var cChan = controlChannel(userArray[i].number);
publishCtrl(cChan, "userLeave", phone.number());
}
};
CONTROLLER.toggleAudio = function(){
var audio = false;
var audioTracks = window.phone.mystream.getAudioTracks();
for (var i = 0, l = audioTracks.length; i < l; i++) {
audioTracks[i].enabled = !audioTracks[i].enabled;
audio = audioTracks[i].enabled;
}
publishCtrlAll("userAudio", {user : phone.number(), audio:audio}); // Stream false if paused
return audio;
};
CONTROLLER.toggleVideo = function(){
var video = false;
var videoTracks = window.phone.mystream.getVideoTracks();
for (var i = 0, l = videoTracks.length; i < l; i++) {
videoTracks[i].enabled = !videoTracks[i].enabled;
video = videoTracks[i].enabled;
}
publishCtrlAll("userVideo", {user : phone.number(), video:video}); // Stream false if paused
return video;
};
CONTROLLER.isOnline = function(number, cb){
pubnub.here_now({
channel : number,
callback : function(m){
console.log(m); // TODO Comment out
cb(m.occupancy != 0);
}
});
};
CONTROLLER.isStreaming = function(number, cb){
CONTROLLER.isOnline(number+"-stream", cb);
};
CONTROLLER.getVideoElement = function(number){
return $('*[data-number="'+number+'"]');
}
function manage_users(session){
if (session.number == phone.number()) return; // Do nothing if it is self.
var idx = findWithAttr(userArray, "number", session.number); // Find session by number
if (session.closed){
if (idx != -1) userArray.splice(idx, 1)[0]; // User leaving
} else { // New User added to stream/group
if (idx == -1) { // Tell everyone in array of new user first, then add to array.
if (!phone.oneway) publishCtrlAll("userJoin", session.number);
userArray.push(session);
}
}
userArray = userArray.filter(function(s){ return !s.closed; }); // Clean to only open talks
// console.log(userArray);
}
function add_to_stream(number){
phone.dial(number);
}
function add_to_group(number){
var session = phone.dial(number, get_xirsys_servers()); // Dial Number
if (!session) return; // No Dupelicate Dialing Allowed
}
function publishCtrlAll(type, data){
for (var i=0; i < userArray.length; i++) {
var cChan = controlChannel(userArray[i].number);
publishCtrl(cChan, type, data);
}
}
function publishCtrl(ch, type, data){
// console.log("Pub to " + ch);
var msg = {type: type, data: data};
pubnub.publish({
channel: ch,
message: msg,
callback : function(m){console.log(m)}
});
}
function subscribe(){
pubnub.subscribe({
channel : ctrlChan,
message : receive,
connect : function() {} // console.log("Subscribed to " + ctrlChan); }
});
}
function receive(m){
switch(m.type) {
case "userCall":
callAuth(m.data);
break;
case "userJoin":
if (phone.oneway){ add_to_stream(m.data); }// JOIN STREAM HERE!
else add_to_group(m.data);
break;
case "userLeave":
var idx = findWithAttr(userArray, "number", m.data);
if (idx != -1) userArray.splice(idx, 1)[0];
break;
case "userVideo":
var idx = findWithAttr(userArray, "number", m.data.user);
var vidEnabled = m.data.video;
if (idx != -1) videotogglecb(userArray[idx], vidEnabled);
break;
case "userAudio":
var idx = findWithAttr(userArray, "number", m.data.user);
var audEnabled = m.data.audio;
if (idx != -1) audiotogglecb(userArray[idx], audEnabled);
break;
}
// console.log(m);
}
function findWithAttr(array, attr, value) {
for(var i = 0; i < array.length; i += 1) {
if(array[i][attr] === value) {
return i;
}
}
return -1;
}
return CONTROLLER;
}
})();
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Request fresh TURN servers from XirSys - Need to explain.
// room=default&application=default&domain=kevingleason.me&ident=gleasonk&secret=b9066b5e-1f75-11e5-866a-c400956a1e19
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function get_xirsys_servers() {
var servers;
$.ajax({
type: 'POST',
url: 'https://service.xirsys.com/ice',
data: {
room: 'default',
application: 'default',
domain: 'kevingleason.me',
ident: 'gleasonk',
secret: 'b9066b5e-1f75-11e5-866a-c400956a1e19',
secure: 1,
},
success: function(res) {
console.log(res);
res = JSON.parse(res);
if (!res.e) servers = res.d.iceServers;
},
async: false
});
return servers;
}