Disable video workaround for gstreamer crashes

src/FlightDisplay/FlightDisplayViewVideo.qml

@@ -72,53 +72,67 @@ Item {
             //-- Fit Width
             return _ar != 0.0 ? parent.width * (1 / _ar) : parent.height
         }
-        QGCVideoBackground {
-            id:             videoContent
-            height:         parent.getHeight()
-            width:          parent.getWidth()
-            anchors.centerIn: parent
-            receiver:       _videoReceiver
-            display:        _videoReceiver && _videoReceiver.videoSurface
-            visible:        _videoReceiver && _videoReceiver.videoRunning
-            Connections {
-                target:         _videoReceiver
-                onImageFileChanged: {
-                    videoContent.grabToImage(function(result) {
-                        if (!result.saveToFile(_videoReceiver.imageFile)) {
-                            console.error('Error capturing video frame');
-                        }
-                    });
+        Component {
+            id: videoBackgroundComponent
+            QGCVideoBackground {
+                id:             videoContent
+                receiver:       _videoReceiver
+                display:        _videoReceiver && _videoReceiver.videoSurface
+
+                Connections {
+                    target:         _videoReceiver
+                    onImageFileChanged: {
+                        videoContent.grabToImage(function(result) {
+                            if (!result.saveToFile(_videoReceiver.imageFile)) {
+                                console.error('Error capturing video frame');
+                            }
+                        });
+                    }
+                }
+                Rectangle {
+                    color:  Qt.rgba(1,1,1,0.5)
+                    height: parent.height
+                    width:  1
+                    x:      parent.width * 0.33
+                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
+                }
+                Rectangle {
+                    color:  Qt.rgba(1,1,1,0.5)
+                    height: parent.height
+                    width:  1
+                    x:      parent.width * 0.66
+                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
+                }
+                Rectangle {
+                    color:  Qt.rgba(1,1,1,0.5)
+                    width:  parent.width
+                    height: 1
+                    y:      parent.height * 0.33
+                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
+                }
+                Rectangle {
+                    color:  Qt.rgba(1,1,1,0.5)
+                    width:  parent.width
+                    height: 1
+                    y:      parent.height * 0.66
+                    visible: _showGrid && !QGroundControl.videoManager.fullScreen
                 }
-            }
-            Rectangle {
-                color:  Qt.rgba(1,1,1,0.5)
-                height: parent.height
-                width:  1
-                x:      parent.width * 0.33
-                visible: _showGrid && !QGroundControl.videoManager.fullScreen
-            }
-            Rectangle {
-                color:  Qt.rgba(1,1,1,0.5)
-                height: parent.height
-                width:  1
-                x:      parent.width * 0.66
-                visible: _showGrid && !QGroundControl.videoManager.fullScreen
-            }
-            Rectangle {
-                color:  Qt.rgba(1,1,1,0.5)
-                width:  parent.width
-                height: 1
-                y:      parent.height * 0.33
-                visible: _showGrid && !QGroundControl.videoManager.fullScreen
-            }
-            Rectangle {
-                color:  Qt.rgba(1,1,1,0.5)
-                width:  parent.width
-                height: 1
-                y:      parent.height * 0.66
-                visible: _showGrid && !QGroundControl.videoManager.fullScreen
             }
         }
+        Loader {
+            // GStreamer is causing crashes on Lenovo laptop OpenGL Intel drivers. In order to workaround this
+            // we don't load a QGCVideoBackground object when video is disabled. This prevents any video rendering
+            // code from running. Setting QGCVideoBackground.receiver/display = null does not work to prevent any
+            // video OpenGL from being generated. Hence the Loader to completely remove it.
+            height:             parent.getHeight()
+            width:              parent.getWidth()
+            anchors.centerIn:   parent
+            visible:            _videoReceiver && _videoReceiver.videoRunning
+            sourceComponent:    videoDisabled ? null : videoBackgroundComponent
+
+            property bool videoDisabled: QGroundControl.settingsManager.videoSettings.videoSource.rawValue === QGroundControl.settingsManager.videoSettings.disabledVideoSource
+        }
+
         MouseArea {
             anchors.fill: parent
             onDoubleClicked: {

src/Settings/VideoSettings.h

@@ -40,12 +40,14 @@ public:
     Q_PROPERTY(QString  udpVideoSource          READ udpVideoSource         CONSTANT)
     Q_PROPERTY(QString  tcpVideoSource          READ tcpVideoSource         CONSTANT)
     Q_PROPERTY(QString  mpegtsVideoSource       READ mpegtsVideoSource      CONSTANT)
+    Q_PROPERTY(QString  disabledVideoSource     READ disabledVideoSource      CONSTANT)
 
     bool     streamConfigured       ();
     QString  rtspVideoSource        () { return videoSourceRTSP; }
     QString  udpVideoSource         () { return videoSourceUDP; }
     QString  tcpVideoSource         () { return videoSourceTCP; }
     QString  mpegtsVideoSource      () { return videoSourceMPEGTS; }
+    QString  disabledVideoSource    () { return videoDisabled; }
 
     static const char* videoSourceNoVideo;
     static const char* videoDisabled;