Doxygen documentation: more fixes and cleanups

modules/androidcamera/include/camera_activity.hpp

@@ -3,6 +3,12 @@
 
 #include <camera_properties.h>
 
+/** @defgroup androidcamera Android Camera Support
+*/
+
+//! @addtogroup androidcamera
+//! @{
+
 class CameraActivity
 {
 public:
@@ -44,4 +50,6 @@ private:
     int frameHeight;
 };
 
+//! @}
+
 #endif

modules/androidcamera/include/camera_properties.h

@@ -1,6 +1,9 @@
 #ifndef CAMERA_PROPERTIES_H
 #define CAMERA_PROPERTIES_H
 
+//! @addtogroup androidcamera
+//! @{
+
 enum {
     ANDROID_CAMERA_PROPERTY_FRAMEWIDTH = 0,
     ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT = 1,
@@ -67,4 +70,6 @@ enum {
     ANDROID_CAMERA_FOCUS_DISTANCE_FAR_INDEX
 };
 
+//! @}
+
 #endif // CAMERA_PROPERTIES_H