Updated the snapshot creation based on the latest release of VideoCore (included backwards compatibility if correct)

Former-commit-id: 5bb8d6d7cd673ac8c08a2c9a8f1995231074d327

include/dispmanx-grabber/DispmanxWrapper.h

@@ -55,10 +55,10 @@ public slots:
 	void stop();
 
 	///
-	/// \brief Set the grabbing mode
-	/// \param mode The new grabbing mode
+	/// Set the grabbing mode
+	/// @param[in] mode The new grabbing mode
 	///
-	void setGrabbingMode(GrabbingMode mode);
+	void setGrabbingMode(const GrabbingMode mode);
 
 private:
 	/// The update rate [Hz]

include/utils/GrabbingMode.h

@@ -1,8 +1,13 @@
 #pragma once
 
+/**
+ * Enumeration of the possible modes in which frame-grabbing is performed.
+ */
 enum GrabbingMode
 {
+	/** Frame grabbing is switched off */
 	GRABBINGMODE_OFF,
+	/** Frame grabbing during video */
 	GRABBINGMODE_VIDEO,
 	GRABBINGMODE_PHOTO,
 	GRABBINGMODE_AUDIO,