get x and y size off camera image for saving data in nexus file

src/controllers/dif/DirectCamera.cpp

@@ -44,6 +44,8 @@ DirectCamera::DirectCamera(const string& name) :
 	exposureTime.init(this, SAVE, "exposure_time");
 	exposureTime.setUnit("s");
 	rgbData.init(this, NOSAVE, "rgb_data");
+	xSize.init(this, NOSAVE, "xsize");
+	ySize.init(this, NOSAVE, "ysize");
 
 	registerFunction(TYPE);
 
@@ -62,6 +64,8 @@ DirectCamera::~DirectCamera() {
  * postConfiguration
  */
 void DirectCamera::postConfiguration() {
+	xSize = m_Driver->width();
+	ySize = m_Driver->height();
 	registerUpdater(m_Driver->RGBData, &DirectCamera::updateRGBData, this);
 }
 

src/controllers/dif/DirectCamera.h

@@ -70,6 +70,8 @@ public:
 	Property<float64> exposureTime;
 	Property<float64, SETPOINT> position;
 	Property<string> rgbData;
+	Property<int32> xSize;
+	Property<int32> ySize;
 
 private: