Modifies the avatars, lastN and adaptive lastN handling so that they play nicely together.

avatar.js

     }
 
     function isUserMuted(jid) {
-        if(!mediaStreams[jid] || !mediaStreams[jid][MediaStream.VIDEO_TYPE]) {
+        // XXX(gp) we may want to rename this method to something like
+        // isUserStreaming, for example.
+        if (jid && jid != connection.emuc.myroomjid) {
+            var resource = Strophe.getResourceFromJid(jid);
+            if (!VideoLayout.isInLastN(resource)) {
+                return true;
+            }
+        }
+
+        if (!mediaStreams[jid] || !mediaStreams[jid][MediaStream.VIDEO_TYPE]) {
             return null;
         }
         return mediaStreams[jid][MediaStream.VIDEO_TYPE].muted;

videolayout.js

     };
     my.connectionIndicators = {};
 
+    my.isInLastN = function(resource) {
+        return lastNCount < 0 // lastN is disabled, return true
+            || (lastNCount > 0 && lastNEndpointsCache.length == 0) // lastNEndpoints cache not built yet, return true
+            || (lastNEndpointsCache && lastNEndpointsCache.indexOf(resource) !== -1);
+    };
+
     my.changeLocalAudio = function(stream) {
         connection.jingle.localAudio = stream;
 
                 peerContainer.show();
             }
 
-            // TODO(gp) add proper avatars handling.
             if (state == 'show')
             {
-                peerContainer.css('-webkit-filter', '');
+                // peerContainer.css('-webkit-filter', '');
+                var jid = connection.emuc.findJidFromResource(resourceJid);
+                Avatar.showUserAvatar(jid, false);
             }
             else // if (state == 'avatar')
             {
-                peerContainer.css('-webkit-filter', 'grayscale(100%)');
+                // peerContainer.css('-webkit-filter', 'grayscale(100%)');
+                var jid = connection.emuc.findJidFromResource(resourceJid);
+                Avatar.showUserAvatar(jid, true);
             }
         }
         else if (peerContainer.is(':visible') && isHide)