#ifndef __TTWAINP_H__

#define __TTWAINP_H__

#include "ttwain.h"

#ifdef TTWAINLIB_MAIN

#define EXTERN

#else

#define EXTERN extern

#endif

#ifdef __cplusplus

extern "C" {

#endif

typedef enum TWAINSTATE {

	TWAIN_PRESESSION = 1, /* source manager not loaded  */

	TWAIN_SM_LOADED,	  /* source manager loaded      */

	TWAIN_SM_OPEN,		  /* source manager open	      */

	TWAIN_SOURCE_OPEN,	/* source open but not enabled*/

	TWAIN_SOURCE_ENABLED, /* source enabled to acquire  */

	TWAIN_TRANSFER_READY, /* image ready to transfer    */

	TWAIN_TRANSFERRING	/* image in transit	      */

} TWAINSTATE;

#ifdef WIN32

#ifdef x64

#define DSM_FILENAME "TWAINDSM.DLL"

#else

#define DSM_FILENAME "TWAIN_32.DLL"

#endif

#define DSM_ENTRYPOINT "DSM_Entry"

#else

#define DSM_FILENAME ""

#define DSM_ENTRYPOINT ""

#endif

struct TRANSFER_INFO {

	TTWAIN_TRANSFER_MECH transferMech; /*current transfer mechanism      */

	TTWAIN_USAGE_MODE usageMode;

	/*used by buffered memory tranfer */

	unsigned char *memoryBuffer;

	unsigned long memorySize;

	/*used by native tranfer          */

	void *hDib;

	/*common to all the transfer mode */

	int preferredLx;

	int preferredLy;

	int multiTransfer;

	int nextImageNeedsToBeInverted;

	int lastTransferWasOk;

	TW_PENDINGXFERS pendingXfers;

	int oneAtLeast;

};

struct CALLBACKS {

	TTWAIN_ONDONE_CB *onDoneCb;

	void *onDoneArg;

	TTWAIN_ONERROR_CB *onErrorCb;

	void *onErrorArg;

};

struct _TTWAIN_DATA__ {

	/*HANDLE*/

	DSMENTRYPROC DSM_Entry; /* entry point of Data Source Manager(TWAIN.DLL)*/

	TW_INT32 hwnd32SM;		/* window handle              */

	/*IDENTITY*/

	TW_IDENTITY sourceId;	 /* source identity structure  */

	TW_IDENTITY appId;		  /* Application Ident. for DS  */

	TW_USERINTERFACE twainUI; /*                            */

	int initDone;

	TWAINAVAILABLE twainAvailable;

	TWAINSTATE twainState; /* the current twain state    */

	struct TRANSFER_INFO transferInfo;

	struct CALLBACKS callback;

	TW_ARRAY *supportedCaps; /* all the (exported)supported capabilities */

	int isSupportedCapsSupported;

	int breakModalLoop;

	int UIStatus; /* Hide or Show UserInterface */

	int modalStatus;

	TW_INT16 resultCode; /* result code for LAST error     */

	TUINT32 ErrRC; /* result & condition code        */

	TUINT32 ErrCC; /* for LAST RECORDED error        */

};

EXTERN struct _TTWAIN_DATA__ TTwainData;

EXTERN int TTWAIN_InitVar(void);

#ifdef __cplusplus

}

#endif

#endif