// ========================================================
// Module:		 Ccnlv.h/cpp
//
// Description: Apply various filters onto an image
//
// Author(s):	 Chi Toung Yeung								cty
//
// Input:		 raw binary image ( no line end padding )
// Output:		 raw binary image ( no line end padding )
//
// History:
// 26Sep02		General methods definitions				cty
// 29Sep02		SetKernel(), GetKernel()					cty
// 20Jan03		SetKernel()										cty
// 20Jan03		Sobel() - 8bpp raw only						cty
// 20Jan03		Sobel_X_8bpp()									cty
// 20Jan03		Sobel_Y_8bpp()									cty
// 20Jan03		Absol()											cty
// 20Jan03		Apply() need future updates to compensate 
//					for big image memory model					cty
// 21Jan03		KERNEL_BLUR_MORE removed					cty
// 27Jan03		Custom()											cty
// 09Sept05		Re-worked for Cnvltn dialog app.			cty
//	09Sept05		Added lots of in-stock kernels			cty
//	09Sept05		Removed all the specialized methods.
//					instead, just load the kernel and call
//					the generic Convolve().  It is slower	cty
// 09Sept05		Convolve() needs work						cty
// 11Sept05		Added the three options in Convolve()	cty
// 12Sept05		Median filter removed.. it belongs in
//					statistical or noise filter				cty
// 14Sept05		Correction to highpass						cty
// 16Sept05		Add unsharpmask filter - strange, did not
//					need to reduced the derivative result	cty
// 16Sept05		Add unsharpmask for 1 plane... just for
//					SharperImage application					cty
// ========================================================

// --------------------------------------------------------
// Constants
// --------------------------------------------------------
#define CCNLV_MONOCHROME									8
#define CCNLV_RGB												24
#define CCNLV_CMYK											32

#define CCNLV_DEFAULT_KERNEL_SIZE						9
#define CCNLV_SOBEL_KERNEL_SIZE							2

#define CCNLV_DEFAULT_WIDTH								3
#define CCNLV_KERNEL_CENTER								4


#define NUM_OF_FILTERS										11

#define NAME_LAPLACIAN										"Laplacian"
#define NAME_SOBEL_X											"Sobel X"
#define NAME_SOBEL_Y											"Sobel Y"
#define NAME_ROBERTS_45										"Roberts 45"
#define NAME_ROBERTS_135									"Roberts 135"
#define NAME_PREWITT_X										"Prewitt X"
#define NAME_PREWITT_Y										"Prewitt Y"
#define NAME_LOWPASS											"Lowpass"
#define NAME_HIGHPASS										"Highpass"
#define NAME_UNSHARP_MASK									"Unsharp Mask"
#define NAME_CUSTOM											"Custom"

enum {LAPLACIAN, SOBEL_X, SOBEL_Y, ROBERTS_45, ROBERTS_135
	  , PREWITT_X, PREWITT_Y, LOW_PASS, HIGH_PASS, UNSHARP_MASK, CUSTOM};

// --------------------------------------------------------
// Errors
// --------------------------------------------------------
#define CCNLV_OK												1
#define CCNLV_NO_KERNEL									-900
#define CCNLV_BAD_KERNEL_TYPE							-901
#define CCNLV_MISSING_IMAGE							-902
#define CCNLV_BAD_IMAGE									-904
#define CCNLV_INVALID_PIXEL_DEPTH					-905
#define CCNLV_INVALID_ENTRY							-906
#define CCNLV_INVALID_KERNEL							-907
#define CCNLV_INVALID_KERNEL_LENGTH					-908

// --------------------------------------------------------
// Class definition
// --------------------------------------------------------
class Ccnlv
{
public:
 	 Ccnlv();
	~Ccnlv();

	void Empty();
	bool IsEmpty();

public:	
	int LoadImage( uchar *pImage, int iNofp, long lWid, long lLen );
	
	int SetKernel ( int iType );
	int SetKernel ( int wid, double pKern[] );

	int Convolve ();
	int UnSharpMask ();
	int UnSharpMask ( int plane );

private:
	int Absol ( int );
	int Absol ( double );
	int Requant ( int );

public:
	int m_iRc;
	CString m_sRc;

	double *m_pKern;
	int m_iKrnWid;

private:

	long m_lImgWid, m_lImgLen;
	int  m_iNofp;
	uchar *m_pImg;
};