Re-order resolution preference, so that we always preference 16:9 ratio when we fallback.

JitsiMeetJS.js

@@ -1,3 +1,4 @@
+var logger = require("jitsi-meet-logger").getLogger(__filename);
 var JitsiConnection = require("./JitsiConnection");
 var JitsiConferenceEvents = require("./JitsiConferenceEvents");
 var JitsiConnectionEvents = require("./JitsiConnectionEvents");
@@ -110,6 +111,8 @@ var LibJitsiMeet = {
                     if(newResolution === null)
                         return Promise.reject(error);
                     options.resolution = newResolution;
+                    logger.debug("Retry createLocalTracks with resolution",
+                                newResolution);
                     return LibJitsiMeet.createLocalTracks(options);
                 }
                 return Promise.reject(error);

modules/RTC/RTCUtils.js

@@ -35,7 +35,7 @@ function setResolutionConstraints(constraints, resolution) {
         // FIXME can't remember if the purpose of this was to always request
         //       low resolution on Android ? if yes it should be moved up front
         constraints.video.mandatory.minWidth = 320;
-        constraints.video.mandatory.minHeight = 240;
+        constraints.video.mandatory.minHeight = 180;
         constraints.video.mandatory.maxFrameRate = 15;
     }
 
@@ -778,7 +778,8 @@ var RTCUtils = {
      * @returns {boolean} true if available, false otherwise.
      */
     isDeviceListAvailable: function () {
-        var isEnumerateDevicesAvailable = navigator.mediaDevices && navigator.mediaDevices.enumerateDevices;
+        var isEnumerateDevicesAvailable
+            = navigator.mediaDevices && navigator.mediaDevices.enumerateDevices;
         if (isEnumerateDevicesAvailable) {
             return true;
         }

service/RTC/Resolutions.js

@@ -24,29 +24,31 @@ var Resolutions = {
         height: 720,
         order: 5
     },
-    "640": {
+    // 16:9 resolution first.
+    "360": {
         width: 640,
-        height: 480,
+        height: 360,
         order: 4
     },
-    "vga": {
+    "640": {
         width: 640,
         height: 480,
-        order: 4
+        order: 3
     },
-    "360": {
+    "vga": {
         width: 640,
-        height: 360,
+        height: 480,
         order: 3
     },
-    "320": {
+    // 16:9 resolution first.
+    "180": {
         width: 320,
-        height: 240,
+        height: 180,
         order: 2
     },
-    "180": {
+    "320": {
         width: 320,
-        height: 180,
+        height: 240,
         order: 1
     }
 };