initial implementation of scalable remote video monitoring feature

client/stylesheets/base.less

@@ -541,6 +541,13 @@ label.required:after {
 		min-width: 120px;
 		background-color: #bc2031;
 	}
+	&.short {
+		min-width: 100px;
+	}
+	&.lightblue {
+		min-width: 100px;
+		background-color: #02acec;
+	}
 	&.clean {
 		background-color: rgba(0, 0, 0, 0.025);
 		font-size: 14px;

client/views/app/room.coffee

@@ -235,11 +235,18 @@ Template.room.helpers
 	selfVideoUrl: ->
 		return Session.get('selfVideoUrl')
 
+	videoActive: ->
+		return (Session.get('remoteVideoUrl') || Session.get('selfVideoUrl'))
+
+	remoteMonitoring: ->
+		return (webrtc?.stackid? && (webrtc.stackid == 'webrtc-ib'))
+
 	flexOpenedRTC1: ->
 		return 'layout1' if Session.equals('flexOpenedRTC1', true)
 
 	flexOpenedRTC2: ->
 		return 'layout2' if Session.equals('flexOpenedRTC2', true)
+
 	rtcLayout1: ->
 		return (Session.get('rtcLayoutmode') == 1 ? true: false);
 
@@ -468,11 +475,25 @@ Template.room.events
 		_id = Template.instance().data._id
 		webrtc.to = _id.replace(Meteor.userId(), '')
 		webrtc.room = _id
+		webrtc.mode = 1
 		webrtc.start(true)
 
 	'click .stop-video': (event) ->
 		webrtc.stop()
 
+	'click .monitor-video': (event) ->
+		_id = Template.instance().data._id
+		webrtc.to = _id.replace(Meteor.userId(), '')
+		webrtc.room = _id
+		webrtc.mode = 2
+		webrtc.start(true)
+
+
+	'click .setup-video': (event) ->
+		webrtc.mode = 2
+		webrtc.activateLocalStream()
+
+
 	'dragenter .dropzone': (e) ->
 		e.currentTarget.classList.add 'over'
 

client/views/app/room.html

@@ -166,7 +166,7 @@
 							{{#with userData}}
 								<div class="about clearfix">
 
-										{{#if selfVideoUrl}}
+										{{#if videoActive}}
 											{{#if rtcLayout3}}
 												<div id='fullscreendiv' style="width: 100%">
 												<video id='videoremote' class="video-remote" src="{{remoteVideoUrl}}" style="width: 100%; align-items: center; margin-bottom: 10px; background-color: #000; transition: width 2s, height 2s, top 2s, left 2s, transform 2s;" autoplay></video>
@@ -212,8 +212,12 @@
 									</div>
 								</div>
 								<nav>
-									{{#unless selfVideoUrl}}
-										<button class='button start-video'><span><i class='icon-videocam'></i> {{_ "Video"}}</span></button>
+									{{#unless videoActive}}
+										<button class='button start-video'><span><i class='icon-videocam'></i> {{_ "Video Chat"}}</span></button>
+										{{#if remoteMonitoring}}
+										<button class='button short monitor-video'><span><i class='icon-videocam'></i> {{_ "Remote"}}</span></button>
+										<button class='button lightblue setup-video'><span><i class='icon-videocam'></i> {{_ "Setup"}}</span></button>
+										{{/if}}
 									{{else}}
 										<button class='button red stop-video'><span><i class='icon-videocam'></i> {{_ "StopVideo"}}</span></button>
 									{{/unless}}

packages/rocketchat-webrtc-ib/webrtc.js

 
 webrtc = {
 	// cid: Random.id(),
+	stackid: 'webrtc-ib',
 	pc: undefined,
 	to: undefined,
 	room: undefined,
+	activeMediastream: undefined,
+	remoteDataSDP: undefined,
+	mode: undefined,
 	lastSeenTimestamp: new Date(),
 	debug: false,
 	config: {
@@ -21,19 +25,30 @@ webrtc = {
 			u: {username: data.from},
 			to: webrtc.to,
 			msg: JSON.stringify(data),
-			rid: webrtc.room
+			rid: webrtc.room,
+			mode: (webrtc.mode ? webrtc.mode : 0)
 		});
 
 	},
 	stop: function(sendEvent) {
+		if (webrtc.activeMediastream) {
+			webrtc.activeMediastream = undefined;
+		}
+
 		if (webrtc.pc) {
 			if (webrtc.pc.signalingState != 'closed') {
 				webrtc.pc.close();
-			}
-			if (sendEvent != false) {
-				webrtc.send( {to: webrtc.to, close: true});
+			webrtc.pc = undefined;
+			webrtc.mode = 0;
 			}
 		}
+
+
+		this.onRemoteUrl();
+		this.onSelfUrl();
+		if (sendEvent != false) {
+			webrtc.send( {to: webrtc.to, close: true});
+		}
 	},
 	log: function() {
 		if (webrtc.debug === true) {
@@ -48,6 +63,18 @@ function onError() {
 	console.log(arguments);
 }
 
+webrtc.activateLocalStream = function() {
+		var media ={ "audio": true, "video": {mandatory: {minWidth:1280, minHeight:720}}} ;
+
+		// get the local stream, show it in the local video element and send it
+		navigator.getUserMedia(media, function (stream) {
+			webrtc.log('getUserMedia got stream');
+			webrtc.onSelfUrl(URL.createObjectURL(stream));
+			webrtc.activeMediastream = stream;
+
+		}, function(e) { webrtc.log('getUserMedia failed during activateLocalStream ' + e); });
+}
+
 // run start(true) to initiate a call
 webrtc.start = function (isCaller, fromUsername) {
 	webrtc.pc = new RTCPeerConnection(webrtc.config);
@@ -71,7 +98,7 @@ webrtc.start = function (isCaller, fromUsername) {
 
 	// once remote stream arrives, show it in the remote video element
 	webrtc.pc.onaddstream = function (evt) {
-		webrtc.log('onaddstream', arguments)
+		webrtc.log('onaddstream', arguments);
 		webrtc.onRemoteUrl(URL.createObjectURL(evt.stream));
 	};
 
@@ -79,23 +106,52 @@ webrtc.start = function (isCaller, fromUsername) {
 		webrtc.log('oniceconnectionstatechange', arguments)
 		var srcElement = evt.srcElement || evt.target;
 		if (srcElement.iceConnectionState == 'disconnected' || srcElement.iceConnectionState == 'closed') {
-			webrtc.pc.getLocalStreams().forEach(function(stream) {
-				stream.stop();
-				webrtc.onSelfUrl();
-			});
-			webrtc.pc.getRemoteStreams().forEach(function(stream) {
-				if (stream.stop) {
+			if (webrtc.pc)  {
+				webrtc.pc.getLocalStreams().forEach(function(stream) {
 					stream.stop();
-				}
-				webrtc.onRemoteUrl();
-			});
-			webrtc.pc = undefined;
+					webrtc.onSelfUrl();
+				});
+				webrtc.pc.getRemoteStreams().forEach(function(stream) {
+					if (stream.stop) {
+						stream.stop();
+					}
+					webrtc.onRemoteUrl();
+				});
+				webrtc.pc = undefined;
+				webrtc.mode = 0;
+			}
+
 		}
 	}
 
+
+	var gotDescription = function(desc) {
+			webrtc.pc.setLocalDescription(desc, function() {}, onError);
+			webrtc.send({ "sdp": desc.toJSON(), cid: webrtc.cid });
+
+	}
+
+	var CreateMonitoringOffer = function() {
+
+		webrtc.pc.createOffer(gotDescription, onError,  { 'mandatory': { 'OfferToReceiveAudio': true, 'OfferToReceiveVideo': true } });
+
+	}
+
+	var AutoConnectStream = function() {
+		webrtc.pc.addStream(webrtc.activeMediastream);
+		webrtc.pc.setRemoteDescription(new RTCSessionDescription(webrtc.remoteDataSDP));
+		webrtc.pc.createAnswer(gotDescription, onError);
+
+	}
 	var LocalGetUserMedia = function() {
+
+
+
+		var media ={ "audio": true, "video": {mandatory: {minWidth:1280, minHeight:720}}} ;
+
+
 		// get the local stream, show it in the local video element and send it
-		navigator.getUserMedia({ "audio": true, "video": {mandatory: {minWidth:1280, minHeight:720}} }, function (stream) {
+		navigator.getUserMedia(media, function (stream) {
 			webrtc.log('getUserMedia got stream');
 			webrtc.onSelfUrl(URL.createObjectURL(stream));
 
@@ -107,32 +163,44 @@ webrtc.start = function (isCaller, fromUsername) {
 				webrtc.pc.createAnswer(gotDescription, onError);
 			}
 
-			function gotDescription(desc) {
-				webrtc.pc.setLocalDescription(desc, function() {}, onError);
-				webrtc.send({ "sdp": desc.toJSON(), cid: webrtc.cid });
-			}
-		}, function(e) { webrtc.log('getUserMedia faield' + e); });
+		}, function(e) { webrtc.log('getUserMedia failed' + e); });
+
 	}
 
 	if (isCaller) {
 		webrtc.log('isCaller LocalGetUserMedia');
-		LocalGetUserMedia();
-	} else {
-		swal({
-			title: "Video call from "+fromUsername,
-			text: "Do you want to accept?",
-			type: "warning",
-			showCancelButton: true,
-			confirmButtonColor: "#DD6B55",
-			confirmButtonText: "Yes",
-			cancelButtonText: "No"
-		}, function(isConfirm){
-			if (isConfirm) {
+		if (webrtc.mode) {
+			if (webrtc.mode === 2) {
+				CreateMonitoringOffer();
+			} else { // node === 1
+
 				LocalGetUserMedia();
-			} else {
-				webrtc.stop();
 			}
-		});
+		} else {
+			// no mode
+			LocalGetUserMedia();
+		}
+
+	} else {
+		if (!webrtc.activeMediastream) {
+			swal({
+				title: "Video call from "+fromUsername,
+				text: "Do you want to accept?",
+				type: "warning",
+				showCancelButton: true,
+				confirmButtonColor: "#DD6B55",
+				confirmButtonText: "Yes",
+				cancelButtonText: "No"
+			}, function(isConfirm){
+				if (isConfirm) {
+					LocalGetUserMedia();
+				} else {
+					webrtc.stop();
+				}
+			});
+		}  else {
+			AutoConnectStream();
+		}
 	}
 }
 
@@ -147,12 +215,34 @@ webrtc.processIncomingRtcMessage = function(data, from, room) {
 		webrtc.room = room;
 	}
 
-	if (data.close == true) {
+
+	// do not stop local video if in monitoring mode
+	if  (data.close == true) {
+
+	  if (webrtc.activeMediastream) {
+	  	if (webrtc.pc) {
+			webrtc.pc.getRemoteStreams().forEach(function(stream) {
+					if (!stream.stop) {
+						stream.stop();
+					}
+				});
+			webrtc.pc = undefined;
+			webrtc.mode = 0;
+		}
+
+	  } else {
+
 		webrtc.stop(false);
-		return
+
+	 }
+	 return
 	}
 
+
 	if (!webrtc.pc) {
+		if ((webrtc.activeMediastream) && (data.sdp != undefined)){
+			webrtc.remoteDataSDP = data.sdp;
+		}
 		webrtc.start(false, data.from);
 	}
 
@@ -163,4 +253,7 @@ webrtc.processIncomingRtcMessage = function(data, from, room) {
 			webrtc.pc.addIceCandidate(new RTCIceCandidate(data.candidate));
 		}
 	}
+
 }
+
+