#ifndef __TTWAIN_H__
#define __TTWAIN_H__

#ifdef WIN32
#include <windows.h>
#else
#ifndef _UNIX_
#define _UNIX_
#endif
#endif

#include "twain.h"

#include "tnztypes.h"

#ifndef TRUE
#define TRUE 1
#endif

#ifndef FALSE
#define FALSE 0
#endif

#ifndef UCHAR
#define UCHAR unsigned char
#endif

#ifndef USHORT
#define USHORT unsigned short
#endif

#ifdef __cplusplus
extern "C" {
#endif

typedef enum TTWAIN_PIXTYPE {
	TTWAIN_BW,	/* 1-bit per pixel, B&W     */
	TTWAIN_WB,	/* 1-bit per pixel, W&B     */
	TTWAIN_GRAY8, /* 1,4, or 8-bit grayscale  */
	TTWAIN_RGB24, /* 24-bit RGB color         */
	TTWAIN_PIXTYPE_HOWMANY,
	TTWAIN_PIXUNKNOWN = -1,
} TTWAIN_PIXTYPE;

typedef enum TTWAIN_BITORDER {
	TTWAIN_LSBFIRST = TWBO_LSBFIRST,
	TTWAIN_MSBFIRST = TWBO_MSBFIRST
} TTWAIN_BITORDER;

typedef enum TWAINAVAILABLE {
	AVAIABLE_DONTKNOW = -1,
	AVAIABLE_YES,
	AVAIABLE_NO
} TWAINAVAILABLE;

typedef enum TTWAIN_TRANSFER_MECH {
	TTWAIN_TRANSFERMODE_NATIVE = TWSX_NATIVE,
	TTWAIN_TRANSFERMODE_MEMORY = TWSX_MEMORY,
	TTWAIN_TRANSFERMODE_FILE = TWSX_FILE
} TTWAIN_TRANSFER_MECH;

typedef enum TTWAIN_USAGE_MODE {
	TTWAIN_MODE_LEASHED,
	TTWAIN_MODE_UNLEASHED
} TTWAIN_USAGE_MODE;

/* application should return 0 to stop the scanning process, any other value elsewhere */
typedef int TTWAIN_ONDONE_CB(UCHAR *buffer, TTWAIN_PIXTYPE pixelType,
							 int lx, int ly, int wrap,
							 float xdpi, float ydpi,
							 void *usrData);

typedef void TTWAIN_ONERROR_CB(void *usrData, void *alwaysZero);

int TTWAIN_IsAvailable(void);
void TWAIN_RegisterApp(int majorNum, int minorNum, /* app. revision*/
					   int nLanguage,			   /* (human) language (use TWLG_xxx from TWAIN.H) */
					   int nCountry,			   /* country (use TWCY_xxx from TWAIN.H)	     */
					   char *version,			   /* version info string                          */
					   char *manufacter,		   /* name of manufacter			     */
					   char *family,			   /* product family				     */
					   char *product);			   /* specific product			     */
int TTWAIN_SelectImageSource(void *hwnd);
/*---------------------------------------------------------------------------*/
void *TTWAIN_AcquireNative(void *hwnd);
int TTWAIN_AcquireMemory(void *hwnd);
void TTWAIN_StopAcquire(void);

/*
nb. AcquireMemory returns: an upside-down bitmap :)
nb. AcquireNative returns: 
			  under Windows an HBITMAP
			  under Mac     a  PICT
*/
/*---------------------------------------------------------------------------*/
void TTWAIN_SetTwainUsage(TTWAIN_USAGE_MODE um);

void TTWAIN_FreeMemory(void *hMem);
int TTWAIN_CloseAll(void *hwnd);
int TTWAIN_OpenSourceManager(void *hwnd);
int TTWAIN_OpenDefaultSource(void);

int TTWAIN_GetHideUI(void);
void TTWAIN_SetHideUI(int flag);

void TTWAIN_SetOnDoneCallback(TTWAIN_ONDONE_CB *proc, void *arg);
void TTWAIN_SetOnErrorCallback(TTWAIN_ONERROR_CB *proc, void *arg);

#ifdef __cplusplus
}
#endif

#endif