Merge pull request #3986 from dogmaphobic/cameraOff

Turn camera off when not in use.

src/FlightDisplay/FlightDisplayView.qml

@@ -206,6 +206,12 @@ QGCView {
                     anchors.fill:   parent
                     visible:        !QGroundControl.videoManager.isGStreamer
                 }
+                onVisibleChanged: {
+                    if(visible)
+                        camera.start()
+                    else
+                        camera.stop()
+                }
             }
         }
 

src/FlightDisplay/VideoManager.h

@@ -31,7 +31,7 @@ public:
 
     Q_PROPERTY(bool             hasVideo        READ    hasVideo                                NOTIFY hasVideoChanged)
     Q_PROPERTY(bool             isGStreamer     READ    isGStreamer                             NOTIFY isGStreamerChanged)
-    Q_PROPERTY(QString          videoSourceID   READ    videoSource                             NOTIFY videoSourceIDChanged)
+    Q_PROPERTY(QString          videoSourceID   READ    videoSourceID                           NOTIFY videoSourceIDChanged)
     Q_PROPERTY(QString          videoSource     READ    videoSource     WRITE setVideoSource    NOTIFY videoSourceChanged)
     Q_PROPERTY(QStringList      videoSourceList READ    videoSourceList                         NOTIFY videoSourceListChanged)
     Q_PROPERTY(bool             videoRunning    READ    videoRunning                            NOTIFY videoRunningChanged)