#ifndef _MDIWIN_AVERAGE_HPP_
#define _MDIWIN_AVERAGE_HPP_
#ifndef _COMMON_WINDOWS_HPP_
#include <mdiwin/windows.hpp>
#endif
#include <mdiwin/types.hpp>
#include <mdiwin/block.hpp>
#include <mdiwin/int.hpp>

class Average
{
public:
	typedef enum Criterion{RangeClipping,Normalization};
	Average(char *imageName,HPALETTE hPalette,UHUGE *hpImage,WORD width,WORD height,WORD *isThreaded);
	~Average();
	void processImage(Block<Integer> &averagingMatrix,Criterion criterion);
private:
	enum {MaxColors=256};
	enum {MatrixDimension=3};
	enum {MaxImageName=100};
	void getPaletteEntries(void);
	void performAverage(void);
	BYTE NEAR averageImageIndex(LONG imageIndex);
	void performAverageRangeClipping(void);
	BYTE NEAR averageImageIndexRangeClipping(LONG imageIndex);

	WORD *mIsThreaded;
	int mDivisor;
	char mImageName[MaxImageName+1];
	WORD mAvMatrix[MatrixDimension][MatrixDimension];
	HPALETTE mhPalette;
	PALETTEENTRY mPaletteData[MaxColors];
	UHUGE *mhpImage;
	WORD mWidth;
	WORD mHeight;
};

inline
void Average::getPaletteEntries(void)
{
	::GetPaletteEntries(mhPalette,0,MaxColors,(PALETTEENTRY FAR*)&mPaletteData);
}
#endif