#pragma once

/* ======================================================================== *\

  Copyright (C) 2007 TWAIN Working Group: Adobe Systems Incorporated,
  AnyDoc Software Inc., Eastman Kodak Company, Fujitsu Computer Products
  of America, JFL Peripheral Solutions Inc., Ricoh Corporation, and
  Xerox Corporation.  All rights reserved.

  Copyright (C) 1991, 1992 TWAIN Working Group: Aldus, Caere, Eastman-Kodak,
  Hewlett-Packard and Logitech Corporations.  All rights reserved.

  Copyright (C) 1997 TWAIN Working Group: Bell+Howell, Canon, DocuMagix,
  Fujitsu, Genoa Technology, Hewlett-Packard, Kofax Imaging Products, and
  Ricoh Corporation.  All rights reserved.

  Copyright © 1998 TWAIN Working Group: Adobe Systems Incorporated,
  Canon Information Systems, Eastman Kodak Company,
  Fujitsu Computer Products of America, Genoa Technology,
  Hewlett-Packard Company, Intel Corporation, Kofax Image Products,
  JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
  All rights reserved.

  Copyright © 2000 TWAIN Working Group: Adobe Systems Incorporated,
  Canon Information Systems, Digimarc Corporation, Eastman Kodak Company,
  Fujitsu Computer Products of America, Hewlett-Packard Company,
  JFL Peripheral Solutions Inc., Ricoh Corporation, and Xerox Corporation.
  All rights reserved.


  TWAIN.h -  This is the definitive include file for applications and
          data sources written to the TWAIN specification.
          It defines constants, data structures, messages etc.
          for the public interface to TWAIN.

  Revision History:
    version 1.0, March 6, 1992.  TWAIN 1.0.
    version 1.1, January 1993.   Tech Notes 1.1
    version 1.5, June 1993.      Specification Update 1.5
                                 Change DC to TW
                                 Change filename from DC.H to TWAIN.H
    version 1.5, July 1993.      Remove spaces from country identifiers

    version 1.7, July 1997       Added Capabilities and data structure for
                                 document imaging and digital cameras.
                                 KHL.
    version 1.7, July 1997       Inserted Borland compatibile structure packing
                                 directives provided by Mentor.  JMH
    version 1.7, Aug 1997        Expanded file tabs to spaces.
                                 NOTE: future authors should be sure to have
                                 their editors set to automatically expand tabs
                                 to spaces (original tab setting was 4 spaces).
    version 1.7, Sept 1997       Added job control values
                                 Added return codes
    version 1.7, Sept 1997       changed definition of pRGBRESPONSE to
                                 pTW_RGBRESPONSE
    version 1.7  Aug 1998        Added missing TWEI_BARCODEROTATION values
                                 TWBCOR_ types JMH
    version 1.8  August 1998     Added new types and definitions required
                                 for 1.8 Specification JMH
    version 1.8  January 1999    Changed search mode from SRCH_ to TWBD_ as
                                 in 1.8 Specification, added TWBT_MAXICODE JMH
    version 1.8  January 1999    Removed undocumented duplicate AUTO<cap> JMH
    version 1.8  March 1999      Removed undocumented 1.8 caps:
                                 CAP_FILESYSTEM
                                 CAP_PAPERBINDING
                                 CAP_PASSTHRU
                                 CAP_POWERDOWNTIME
                                 ICAP_AUTODISCARDBLANKPAGES
                               * CAP_PAGEMULTIPLEACQUIRE - is
CAP_REACQUIREALLOWED,
                               requires spec change.  JMH
                                 Added Mac structure packing modifications JMH
    version 1.9  March 2000  Added new types and definations required
                             for 1.9 Specification MLM
    version 1.9  March 2000  Added ICAP_JPEGQUALITY, TWJQ_ values,
                                 updated TWON_PROTOCOLMINOR for Release v1.9 MN
    version 1.91 August 2007     Added new types and definitions required
                                 for 1.91 Specification MLM
    version 2.0  Sept 2007       Added new types and definitions required
                                 for 2.0 Specification FHH
    version 2.0  Mar 2008        Depreciated ICAP_PIXELTYPEs TWPT_SRGB64,
TWPT_BGR,
                                 TWPT_CIELAB, TWPT_CIELUV, and TWPT_YCBCR  JMW
    version 2.0  Mar 2008        Added missing new 2.0 CAP_ definitions JMW
    version 2.0  Dec 2008        Updated TW_INFO structure for 64bit JMW
    version 2.1  Mar 2009        Added new types and definitions required
                                 for 2.1 Specification JMW
\* ======================================================================== */

#ifndef TWAIN
#define TWAIN

/****************************************************************************
 * TWAIN Version                                                            *
 ****************************************************************************/
#define TWON_PROTOCOLMINOR 1 /* Changed for Version 2.1            */
#define TWON_PROTOCOLMAJOR 2

/****************************************************************************
 * Platform Dependent Definitions and Typedefs                              *
 ****************************************************************************/

#ifdef LINUX
#include <wchar.h>
#endif

/* Microsoft C/C++ Compiler */
#if defined(_WIN32) || defined(WIN64) || defined(_WINDOWS)
#define TWH_CMP_MSC
#if defined(_WIN64) || defined(WIN64)
#define TWH_64BIT
#elif defined(_WIN32) || defined(_WIN32)
#define TWH_32BIT
#endif

/* Apple Compiler (which is GNU now) */
#elif defined(__APPLE__)
#define TWH_CMP_XCODE
#define TWH_32BIT

/* GNU C/C++ Compiler */
#elif defined(__GNUC__)
#define TWH_CMP_GNU
#if defined(__alpha__) || defined(__ia64__) || defined(__ppc64__) ||           \
    defined(__s390x__) || defined(__x86_64__)
#define TWH_64BIT
#else
#define TWH_32BIT
#endif

/* Borland C/C++ Compiler */
#elif defined(__BORLAND__)
#define TWH_CMP_BORLAND
#define TWH_32BIT
/* Unrecognized */
#else
#error Unrecognized compiler
#endif

/* Win32 and Win64 systems */
#if defined(TWH_CMP_MSC) | defined(TWH_CMP_BORLAND)
#include <windows.h>
typedef HANDLE TW_HANDLE;
typedef LPVOID TW_MEMREF;
typedef UINT_PTR TW_UINTPTR;

/* MacOS/X... */
#elif defined(TWH_CMP_XCODE)
#include <Cocoa/Cocoa.h>
#define PASCAL pascal
#define FAR
typedef Handle TW_HANDLE;
typedef char *TW_MEMREF;

#ifdef TWH_32BIT
// 32 bit GNU
typedef unsigned long TW_UINTPTR;
#else
// 64 bit GNU
typedef unsigned long long TW_UINTPTR;
#endif

/* Everything else... */
#else
#define PASCAL
#define FAR
typedef void *TW_HANDLE;
typedef void *TW_MEMREF;
typedef unsigned char BYTE;

#ifdef TWH_32BIT
// 32 bit GNU
typedef unsigned long TW_UINTPTR;
#else
// 64 bit GNU
typedef unsigned long long TW_UINTPTR;
#endif
#endif

/* Set the packing: this occurs before any structures are defined */
#ifdef TWH_CMP_MSC
#pragma pack(push, before_twain)
#pragma pack(2)
#elif defined(TWH_CMP_GNU)
#pragma pack(push, before_twain)
#pragma pack(2)
#elif defined(TWH_CMP_BORLAND)
#pragma option -a2
#elif defined(TWH_CMP_XCODE)
#if PRAGMA_STRUCT_ALIGN
#pragma options align = mac68k
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(push, 2)
#elif PRAGMA_STRUCT_PACK
#pragma pack(2)
#endif
#endif

/****************************************************************************
 * Type Definitions                                                         *
 ****************************************************************************/

/* String types. These include room for the strings and a NULL char,     *
 * or, on the Mac, a length byte followed by the string.                 *
 * TW_STR255 must hold less than 256 chars so length fits in first byte. */
typedef char TW_STR32[34], FAR *pTW_STR32;
typedef char TW_STR64[66], FAR *pTW_STR64;
typedef char TW_STR128[130], FAR *pTW_STR128;
typedef char TW_STR255[256], FAR *pTW_STR255;

/* Numeric types. */
typedef char TW_INT8, FAR *pTW_INT8;
typedef short TW_INT16, FAR *pTW_INT16;
typedef long TW_INT32, FAR *pTW_INT32;
typedef unsigned char TW_UINT8, FAR *pTW_UINT8;
typedef unsigned short TW_UINT16, FAR *pTW_UINT16;
typedef unsigned long TW_UINT32, FAR *pTW_UINT32;
typedef unsigned short TW_BOOL, FAR *pTW_BOOL;

/****************************************************************************
 * Structure Definitions                                                    *
 ****************************************************************************/

/* Fixed point structure type. */
typedef struct {
  TW_INT16 Whole; /* maintains the sign */
  TW_UINT16 Frac;
} TW_FIX32, FAR *pTW_FIX32;

/* No DAT.  Defines a frame rectangle in ICAP_UNITS coordinates. */
typedef struct {
  TW_FIX32 Left;
  TW_FIX32 Top;
  TW_FIX32 Right;
  TW_FIX32 Bottom;
} TW_FRAME, FAR *pTW_FRAME;

/* No DAT needed. */
typedef struct {
  TW_FIX32 StartIn;
  TW_FIX32 BreakIn;
  TW_FIX32 EndIn;
  TW_FIX32 StartOut;
  TW_FIX32 BreakOut;
  TW_FIX32 EndOut;
  TW_FIX32 Gamma;
  TW_FIX32 SampleCount; /* if =0 use the gamma */
} TW_DECODEFUNCTION, FAR *pTW_DECODEFUNCTION;

/* No DAT needed. */
typedef struct {
  TW_DECODEFUNCTION Decode[3];
  TW_FIX32 Mix[3][3];
} TW_TRANSFORMSTAGE, FAR *pTW_TRANSFORMSTAGE;

/* TWON_ARRAY. Container for array of values (a simplified TW_ENUMERATION) */
typedef struct {
  TW_UINT16 ItemType;
  TW_UINT32 NumItems;   /* How many items in ItemList           */
  TW_UINT8 ItemList[1]; /* Array of ItemType values starts here */
} TW_ARRAY, FAR *pTW_ARRAY;

/* DAT_AUDIOINFO, information about audio data */
typedef struct {
  TW_STR255 Name;     /* name of audio data */
  TW_UINT32 Reserved; /* reserved space */
} TW_AUDIOINFO, FAR *pTW_AUDIOINFO;

/* TW_CALLBACK, used to register callbacks Added 2.0 */
typedef struct {
  TW_MEMREF CallBackProc;
  TW_UINT32 RefCon;
  TW_INT16 Message;
} TW_CALLBACK, FAR *pTW_CALLBACK;

/* DAT_CAPABILITY. Used by application to get/set capability from/in a data
 * source. */
typedef struct {
  TW_UINT16 Cap;     /* id of capability to set or get, e.g. CAP_BRIGHTNESS */
  TW_UINT16 ConType; /* TWON_ONEVALUE, _RANGE, _ENUMERATION or _ARRAY   */
  TW_HANDLE hContainer; /* Handle to container of type Dat              */
} TW_CAPABILITY, FAR *pTW_CAPABILITY;

/* No DAT needed. */
typedef struct {
  TW_FIX32 X;
  TW_FIX32 Y;
  TW_FIX32 Z;
} TW_CIEPOINT, FAR *pTW_CIEPOINT;

/* DAT_CIECOLOR. */
typedef struct {
  TW_UINT16 ColorSpace;
  TW_INT16 LowEndian;
  TW_INT16 DeviceDependent;
  TW_INT32 VersionNumber;
  TW_TRANSFORMSTAGE StageABC;
  TW_TRANSFORMSTAGE StageLMN;
  TW_CIEPOINT WhitePoint;
  TW_CIEPOINT BlackPoint;
  TW_CIEPOINT WhitePaper;
  TW_CIEPOINT BlackInk;
  TW_FIX32 Samples[1];
} TW_CIECOLOR, FAR *pTW_CIECOLOR;

typedef struct {
  TW_UINT32 InfoLength; /* Length of Information in bytes.  */
  TW_HANDLE hData;      /* Place holder for data, DS Allocates */
} TW_CUSTOMDSDATA, FAR *pTW_CUSTOMDSDATA;

/* DAT_DEVICEEVENT, information about events */
typedef struct {
  TW_UINT32 Event;      /* One of the TWDE_xxxx values. */
  TW_STR255 DeviceName; /* The name of the device that generated the event */
  TW_UINT32 BatteryMinutes;         /* Battery Minutes Remaining    */
  TW_INT16 BatteryPercentage;       /* Battery Percentage Remaining */
  TW_INT32 PowerSupply;             /* Power Supply                 */
  TW_FIX32 XResolution;             /* Resolution                   */
  TW_FIX32 YResolution;             /* Resolution                   */
  TW_UINT32 FlashUsed2;             /* Flash Used2                  */
  TW_UINT32 AutomaticCapture;       /* Automatic Capture            */
  TW_UINT32 TimeBeforeFirstCapture; /* Automatic Capture            */
  TW_UINT32 TimeBetweenCaptures;    /* Automatic Capture            */
} TW_DEVICEEVENT, FAR *pTW_DEVICEEVENT;

/* No DAT needed. */
typedef struct {
  TW_UINT8 Index;    /* Value used to index into the color table. */
  TW_UINT8 Channel1; /* First  tri-stimulus value (e.g Red)       */
  TW_UINT8 Channel2; /* Second tri-stimulus value (e.g Green)     */
  TW_UINT8 Channel3; /* Third  tri-stimulus value (e.g Blue)      */
} TW_ELEMENT8, FAR *pTW_ELEMENT8;

/* TWON_ENUMERATION. Container for a collection of values. */
typedef struct {
  TW_UINT16 ItemType;
  TW_UINT32 NumItems;     /* How many items in ItemList                 */
  TW_UINT32 CurrentIndex; /* Current value is in ItemList[CurrentIndex] */
  TW_UINT32 DefaultIndex; /* Powerup value is in ItemList[DefaultIndex] */
  TW_UINT8 ItemList[1];   /* Array of ItemType values starts here       */
} TW_ENUMERATION, FAR *pTW_ENUMERATION;

/* DAT_EVENT. For passing events down from the application to the DS. */
typedef struct {
  TW_MEMREF pEvent;    /* Windows pMSG or Mac pEvent.                 */
  TW_UINT16 TWMessage; /* TW msg from data source, e.g. MSG_XFERREADY */
} TW_EVENT, FAR *pTW_EVENT;

typedef struct {
  TW_UINT16 InfoID;
  TW_UINT16 ItemType;
  TW_UINT16 NumItems;
  union {
    TW_UINT16 CondCode; /* Depreciated, use ReturnCode. TWAIN 2.0 and older. */
    TW_UINT16 ReturnCode; /* TWAIN 2.1 and newer */
  };
  TW_UINTPTR Item;
} TW_INFO, FAR *pTW_INFO;

typedef struct {
  TW_UINT32 NumInfos;
  TW_INFO Info[1];
} TW_EXTIMAGEINFO, FAR *pTW_EXTIMAGEINFO;

/* DAT_FILESYSTEM, information about TWAIN file system */
typedef struct {
  /* DG_CONTROL / DAT_FILESYSTEM / MSG_xxxx fields     */
  TW_STR255 InputName;  /* The name of the input or source file */
  TW_STR255 OutputName; /* The result of an operation or the name of a
                           destination file */
  TW_MEMREF
  Context; /* Source specific data used to remember state information */
  /* DG_CONTROL / DAT_FILESYSTEM / MSG_DELETE field    */
  int Recursive; /* recursively delete all sub-directories */
  /* DG_CONTROL / DAT_FILESYSTEM / MSG_GETINFO fields  */
  TW_INT32 FileType;         /* One of the TWFY_xxxx values */
  TW_UINT32 Size;            /* Size of current FileType */
  TW_STR32 CreateTimeDate;   /* creation date of the file */
  TW_STR32 ModifiedTimeDate; /* last date the file was modified */
  TW_UINT32 FreeSpace;       /* bytes of free space on the current device */
  TW_INT32 NewImageSize;   /* estimate of the amount of space a new image would
                              take up */
  TW_UINT32 NumberOfFiles; /* number of files, depends on FileType */
  TW_UINT32 NumberOfSnippets; /* number of audio snippets */
  TW_UINT32 DeviceGroupMask;  /* used to group cameras (ex: front/rear bitonal,
                                 front/rear grayscale...) */
  char Reserved[508];         /**/
} TW_FILESYSTEM, FAR *pTW_FILESYSTEM;

/* DAT_GRAYRESPONSE */
typedef struct {
  TW_ELEMENT8 Response[1];
} TW_GRAYRESPONSE, FAR *pTW_GRAYRESPONSE;

/* No DAT needed.  Describes version of software currently running. */
typedef struct {
  TW_UINT16 MajorNum; /* Major revision number of the software. */
  TW_UINT16 MinorNum; /* Incremental revision number of the software. */
  TW_UINT16 Language; /* e.g. TWLG_SWISSFRENCH */
  TW_UINT16 Country;  /* e.g. TWCY_SWITZERLAND */
  TW_STR32 Info;      /* e.g. "1.0b3 Beta release" */
} TW_VERSION, FAR *pTW_VERSION;

/* DAT_IDENTITY. Identifies the program/library/code resource. */
typedef struct {
  TW_UINT32 Id;       /* Unique number.  In Windows, application hWnd      */
  TW_VERSION Version; /* Identifies the piece of code              */
  TW_UINT16
  ProtocolMajor; /* Application and DS must set to TWON_PROTOCOLMAJOR */
  TW_UINT16
  ProtocolMinor; /* Application and DS must set to TWON_PROTOCOLMINOR */
  TW_UINT32 SupportedGroups; /* Bit field OR combination of DG_ constants */
  TW_STR32 Manufacturer;     /* Manufacturer name, e.g. "Hewlett-Packard" */
  TW_STR32 ProductFamily;    /* Product family name, e.g. "ScanJet"       */
  TW_STR32 ProductName;      /* Product name, e.g. "ScanJet Plus"         */
} TW_IDENTITY, FAR *pTW_IDENTITY;

/* DAT_IMAGEINFO. Application gets detailed image info from DS with this. */
typedef struct {
  TW_FIX32 XResolution;      /* Resolution in the horizontal             */
  TW_FIX32 YResolution;      /* Resolution in the vertical               */
  TW_INT32 ImageWidth;       /* Columns in the image, -1 if unknown by DS*/
  TW_INT32 ImageLength;      /* Rows in the image, -1 if unknown by DS   */
  TW_INT16 SamplesPerPixel;  /* Number of samples per pixel, 3 for RGB   */
  TW_INT16 BitsPerSample[8]; /* Number of bits for each sample           */
  TW_INT16 BitsPerPixel;     /* Number of bits for each padded pixel     */
  TW_BOOL Planar;            /* True if Planar, False if chunky          */
  TW_INT16 PixelType;        /* How to interp data; photo interp (TWPT_) */
  TW_UINT16 Compression;     /* How the data is compressed (TWCP_xxxx)   */
} TW_IMAGEINFO, FAR *pTW_IMAGEINFO;

/* DAT_IMAGELAYOUT. Provides image layout information in current units. */
typedef struct {
  TW_FRAME Frame; /* Frame coords within larger document */
  TW_UINT32 DocumentNumber;
  TW_UINT32 PageNumber;  /* Reset when you go to next document  */
  TW_UINT32 FrameNumber; /* Reset when you go to next page      */
} TW_IMAGELAYOUT, FAR *pTW_IMAGELAYOUT;

/* No DAT needed.  Used to manage memory buffers. */
typedef struct {
  TW_UINT32 Flags;  /* Any combination of the TWMF_ constants.           */
  TW_UINT32 Length; /* Number of bytes stored in buffer TheMem.          */
  TW_MEMREF TheMem; /* Pointer or handle to the allocated memory buffer. */
} TW_MEMORY, FAR *pTW_MEMORY;

/* DAT_IMAGEMEMXFER. Used to pass image data (e.g. in strips) from DS to
 * application.*/
typedef struct {
  TW_UINT16 Compression;  /* How the data is compressed                */
  TW_UINT32 BytesPerRow;  /* Number of bytes in a row of data          */
  TW_UINT32 Columns;      /* How many columns                          */
  TW_UINT32 Rows;         /* How many rows                             */
  TW_UINT32 XOffset;      /* How far from the side of the image        */
  TW_UINT32 YOffset;      /* How far from the top of the image         */
  TW_UINT32 BytesWritten; /* How many bytes written in Memory          */
  TW_MEMORY Memory;       /* Mem struct used to pass actual image data */
} TW_IMAGEMEMXFER, FAR *pTW_IMAGEMEMXFER;

/* Changed in 1.1: QuantTable, HuffmanDC, HuffmanAC TW_MEMREF -> TW_MEMORY  */
/* DAT_JPEGCOMPRESSION. Based on JPEG Draft International Std, ver 10918-1. */
typedef struct {
  TW_UINT16 ColorSpace;       /* One of the TWPT_xxxx values                */
  TW_UINT32 SubSampling;      /* Two word "array" for subsampling values    */
  TW_UINT16 NumComponents;    /* Number of color components in image        */
  TW_UINT16 RestartFrequency; /* Frequency of restart marker codes in MDU's */
  TW_UINT16 QuantMap[4];      /* Mapping of components to QuantTables       */
  TW_MEMORY QuantTable[4];    /* Quantization tables                        */
  TW_UINT16 HuffmanMap[4];    /* Mapping of components to Huffman tables    */
  TW_MEMORY HuffmanDC[2];     /* DC Huffman tables                          */
  TW_MEMORY HuffmanAC[2];     /* AC Huffman tables                          */
} TW_JPEGCOMPRESSION, FAR *pTW_JPEGCOMPRESSION;

/* TWON_ONEVALUE. Container for one value. */
typedef struct {
  TW_UINT16 ItemType;
  TW_UINT32 Item;
} TW_ONEVALUE, FAR *pTW_ONEVALUE;

/* DAT_PALETTE8. Color palette when TWPT_PALETTE pixels xfer'd in mem buf. */
typedef struct {
  TW_UINT16 NumColors;     /* Number of colors in the color table.  */
  TW_UINT16 PaletteType;   /* TWPA_xxxx, specifies type of palette. */
  TW_ELEMENT8 Colors[256]; /* Array of palette values starts here.  */
} TW_PALETTE8, FAR *pTW_PALETTE8;

/* DAT_PASSTHRU, device dependant data to pass through Data Source */
typedef struct {
  TW_MEMREF pCommand;     /* Pointer to Command buffer */
  TW_UINT32 CommandBytes; /* Number of bytes in Command buffer */
  TW_INT32 Direction;  /* One of the TWDR_xxxx values.  Defines the direction of
                          data flow */
  TW_MEMREF pData;     /* Pointer to Data buffer */
  TW_UINT32 DataBytes; /* Number of bytes in Data buffer */
  TW_UINT32 DataBytesXfered; /* Number of bytes successfully transferred */
} TW_PASSTHRU, FAR *pTW_PASSTHRU;

/* DAT_PENDINGXFERS. Used with MSG_ENDXFER to indicate additional data. */
typedef struct {
  TW_UINT16 Count;
  union {
    TW_UINT32 EOJ;
    TW_UINT32 Reserved;
  };
} TW_PENDINGXFERS, FAR *pTW_PENDINGXFERS;

/* TWON_RANGE. Container for a range of values. */
typedef struct {
  TW_UINT16 ItemType;
  TW_UINT32 MinValue;     /* Starting value in the range.           */
  TW_UINT32 MaxValue;     /* Final value in the range.              */
  TW_UINT32 StepSize;     /* Increment from MinValue to MaxValue.   */
  TW_UINT32 DefaultValue; /* Power-up value.                        */
  TW_UINT32 CurrentValue; /* The value that is currently in effect. */
} TW_RANGE, FAR *pTW_RANGE;

/* DAT_RGBRESPONSE */
typedef struct {
  TW_ELEMENT8 Response[1];
} TW_RGBRESPONSE, FAR *pTW_RGBRESPONSE;

/* DAT_SETUPFILEXFER. Sets up DS to application data transfer via a file. */
typedef struct {
  TW_STR255 FileName;
  TW_UINT16 Format; /* Any TWFF_ constant */
  TW_INT16 VRefNum; /* Used for Mac only  */
} TW_SETUPFILEXFER, FAR *pTW_SETUPFILEXFER;

/* DAT_SETUPMEMXFER. Sets up DS to application data transfer via a memory
 * buffer. */
typedef struct {
  TW_UINT32 MinBufSize;
  TW_UINT32 MaxBufSize;
  TW_UINT32 Preferred;
} TW_SETUPMEMXFER, FAR *pTW_SETUPMEMXFER;

/* DAT_STATUS. Application gets detailed status info from a data source with
 * this. */
typedef struct {
  TW_UINT16 ConditionCode; /* Any TWCC_ constant     */
  union {
    TW_UINT16 Data;     /* output (TWAIN 2.1 and newer) This field contains
                           additional data. */
    TW_UINT16 Reserved; /* output (TWAIN 2.0 and older) */
  };
} TW_STATUS, FAR *pTW_STATUS;

/* DAT_STATUSUTF8. Application gets detailed UTF8 status info from a data source
 * with this.  Added 2.1 */
typedef struct {
  TW_STATUS Status; /* input  TW_STATUS data received from a previous call to
                       DG_CONTROL / DAT_STATUS / MSG_GET. */
  TW_UINT32 Size;   /* output Total number of bytes in the UTF8string, plus the
                       terminating NUL byte.  This is not the same as the total
                       number of characters in the string. */
  TW_HANDLE
  UTF8string; /* output TW_HANDLE to a UTF-8 encoded localized string (based
                 on TW_IDENTITY.Language or CAP_LANGUAGE).  The Source
                 allocates it, the Application frees it. */
} TW_STATUSUTF8, FAR *pTW_STATUSUTF8;

/* DAT_USERINTERFACE. Coordinates UI between application and data source. */
typedef struct {
  TW_BOOL ShowUI;    /* TRUE if DS should bring up its UI           */
  TW_BOOL ModalUI;   /* For Mac only - true if the DS's UI is modal */
  TW_HANDLE hParent; /* For windows only - Application window handle        */
} TW_USERINTERFACE, FAR *pTW_USERINTERFACE;

/****************************************************************************
 * Generic Constants                                                        *
 ****************************************************************************/

#define TWON_ARRAY 3       /* indicates TW_ARRAY container       */
#define TWON_ENUMERATION 4 /* indicates TW_ENUMERATION container */
#define TWON_ONEVALUE 5    /* indicates TW_ONEVALUE container    */
#define TWON_RANGE 6       /* indicates TW_RANGE container       */

#define TWON_ICONID 962   /* res Id of icon used in USERSELECT lbox */
#define TWON_DSMID 461    /* res Id of the DSM version num resource */
#define TWON_DSMCODEID 63 /* res Id of the Mac SM Code resource     */

#define TWON_DONTCARE8 0xff
#define TWON_DONTCARE16 0xffff
#define TWON_DONTCARE32 0xffffffff

/* Flags used in TW_MEMORY structure. */
#define TWMF_APPOWNS 0x1
#define TWMF_DSMOWNS 0x2
#define TWMF_DSOWNS 0x4
#define TWMF_POINTER 0x8
#define TWMF_HANDLE 0x10

/* There are four containers used for capabilities negotiation:
 *    TWON_ONEVALUE, TWON_RANGE, TWON_ENUMERATION, TWON_ARRAY
 * In each container structure ItemType can be TWTY_INT8, TWTY_INT16, etc.
 * The kind of data stored in the container can be determined by doing
 * DCItemSize[ItemType] where the following is defined in TWAIN glue code:
 *          DCItemSize[]= { sizeof(TW_INT8),
 *                          sizeof(TW_INT16),
 *                          etc.
 *                          sizeof(TW_UINT32) };
 *
 */

#define TWTY_INT8 0x0000  /* Means Item is a TW_INT8   */
#define TWTY_INT16 0x0001 /* Means Item is a TW_INT16  */
#define TWTY_INT32 0x0002 /* Means Item is a TW_INT32  */

#define TWTY_UINT8 0x0003  /* Means Item is a TW_UINT8  */
#define TWTY_UINT16 0x0004 /* Means Item is a TW_UINT16 */
#define TWTY_UINT32 0x0005 /* Means Item is a TW_UINT32 */

#define TWTY_BOOL 0x0006 /* Means Item is a TW_BOOL   */

#define TWTY_FIX32 0x0007 /* Means Item is a TW_FIX32  */

#define TWTY_FRAME 0x0008 /* Means Item is a TW_FRAME  */

#define TWTY_STR32 0x0009  /* Means Item is a TW_STR32  */
#define TWTY_STR64 0x000a  /* Means Item is a TW_STR64  */
#define TWTY_STR128 0x000b /* Means Item is a TW_STR128 */
#define TWTY_STR255 0x000c /* Means Item is a TW_STR255 */
#define TWTY_HANDLE 0x000f /* Means Item is a TW_HANDLE */

/****************************************************************************
 * Capability Constants                                                     *
 ****************************************************************************/

/* CAP_ALARMS values (AL_ means alarms) Added 1.8  */
#define TWAL_ALARM 0
#define TWAL_FEEDERERROR 1
#define TWAL_FEEDERWARNING 2
#define TWAL_BARCODE 3
#define TWAL_DOUBLEFEED 4
#define TWAL_JAM 5
#define TWAL_PATCHCODE 6
#define TWAL_POWER 7
#define TWAL_SKEW 8

/* ICAP_AUTOSIZE values Added 2.0 */
#define TWAS_NONE 0
#define TWAS_AUTO 1
#define TWAS_CURRENT 2

/* TWEI_BARCODEROTATION values (BCOR_ means barcode rotation) Added 1.7 */
#define TWBCOR_ROT0 0
#define TWBCOR_ROT90 1
#define TWBCOR_ROT180 2
#define TWBCOR_ROT270 3
#define TWBCOR_ROTX 4

/* ICAP_BARCODESEARCHMODE values (TWBD_ means search) */
#define TWBD_HORZ 0
#define TWBD_VERT 1
#define TWBD_HORZVERT 2
#define TWBD_VERTHORZ 3

/* ICAP_BITORDER values (BO_ means Bit Order) */
#define TWBO_LSBFIRST 0
#define TWBO_MSBFIRST 1

/* ICAP_AUTODISCARDBLANKPAGES values Added 2.0 */
#define TWBP_DISABLE -2
#define TWBP_AUTO -1

/* ICAP_BITDEPTHREDUCTION values (BR_ means Bitdepth Reduction) Added 1.5 */
#define TWBR_THRESHOLD 0
#define TWBR_HALFTONE 1
#define TWBR_CUSTHALFTONE 2
#define TWBR_DIFFUSION 3

/* ICAP_SUPPORTEDBARCODETYPES and TWEI_BARCODETYPE values Added 1.7 */
#define TWBT_3OF9 0
#define TWBT_2OF5INTERLEAVED 1
#define TWBT_2OF5NONINTERLEAVED 2
#define TWBT_CODE93 3
#define TWBT_CODE128 4
#define TWBT_UCC128 5
#define TWBT_CODABAR 6
#define TWBT_UPCA 7
#define TWBT_UPCE 8
#define TWBT_EAN8 9
#define TWBT_EAN13 10
#define TWBT_POSTNET 11
#define TWBT_PDF417 12
#define TWBT_2OF5INDUSTRIAL 13       /* Added 1.8 */
#define TWBT_2OF5MATRIX 14           /* Added 1.8 */
#define TWBT_2OF5DATALOGIC 15        /* Added 1.8 */
#define TWBT_2OF5IATA 16             /* Added 1.8 */
#define TWBT_3OF9FULLASCII 17        /* Added 1.8 */
#define TWBT_CODABARWITHSTARTSTOP 18 /* Added 1.8 */
#define TWBT_MAXICODE 19             /* Added 1.8 */

/* ICAP_COMPRESSION values (CP_ means ComPression ) */
#define TWCP_NONE 0
#define TWCP_PACKBITS 1
#define TWCP_GROUP31D 2    /* Follows CCITT spec (no End Of Line)          */
#define TWCP_GROUP31DEOL 3 /* Follows CCITT spec (has End Of Line)         */
#define TWCP_GROUP32D 4    /* Follows CCITT spec (use cap for K Factor)    */
#define TWCP_GROUP4 5      /* Follows CCITT spec                           */
#define TWCP_JPEG 6        /* Use capability for more info                 */
#define TWCP_LZW 7         /* Must license from Unisys and IBM to use      */
#define TWCP_JBIG 8        /* For Bitonal images  -- Added 1.7 KHL         */
#define TWCP_PNG 9         /* Added 1.8 */
#define TWCP_RLE4 10       /* Added 1.8 */
#define TWCP_RLE8 11       /* Added 1.8 */
#define TWCP_BITFIELDS 12  /* Added 1.8 */

/* CAP_CAMERASIDE and TWEI_PAGESIDE values (CS_ means camera side) Added 1.91 */
#define TWCS_BOTH 0
#define TWCS_TOP 1
#define TWCS_BOTTOM 2

/* CAP_CLEARBUFFERS values (CB_ means clear buffers) */
#define TWCB_AUTO 0
#define TWCB_CLEAR 1
#define TWCB_NOCLEAR 2

/* CAP_DEVICEEVENT values (DE_ means device event) */
#define TWDE_CUSTOMEVENTS 0x8000
#define TWDE_CHECKAUTOMATICCAPTURE 0
#define TWDE_CHECKBATTERY 1
#define TWDE_CHECKDEVICEONLINE 2
#define TWDE_CHECKFLASH 3
#define TWDE_CHECKPOWERSUPPLY 4
#define TWDE_CHECKRESOLUTION 5
#define TWDE_DEVICEADDED 6
#define TWDE_DEVICEOFFLINE 7
#define TWDE_DEVICEREADY 8
#define TWDE_DEVICEREMOVED 9
#define TWDE_IMAGECAPTURED 10
#define TWDE_IMAGEDELETED 11
#define TWDE_PAPERDOUBLEFEED 12
#define TWDE_PAPERJAM 13
#define TWDE_LAMPFAILURE 14
#define TWDE_POWERSAVE 15
#define TWDE_POWERSAVENOTIFY 16

/* TW_PASSTHRU.Direction values.  Added 1.8 */
#define TWDR_GET 1
#define TWDR_SET 2

/* TWEI_DESKEWSTATUS values Added 1.7 */
#define TWDSK_SUCCESS 0
#define TWDSK_REPORTONLY 1
#define TWDSK_FAIL 2
#define TWDSK_DISABLED 3

/* CAP_DUPLEX values Added 1.7 */
#define TWDX_NONE 0
#define TWDX_1PASSDUPLEX 1
#define TWDX_2PASSDUPLEX 2

/* CAP_FEEDERALIGNMENT values (FA_ means feeder alignment) */
#define TWFA_NONE 0
#define TWFA_LEFT 1
#define TWFA_CENTER 2
#define TWFA_RIGHT 3

/* ICAP_FEEDERTYPE */
#define TWFE_GENERAL 0
#define TWFE_PHOTO 1

/* ICAP_IMAGEFILEFORMAT values (FF_means File Format)   */
#define TWFF_TIFF 0      /* Tagged Image File Format     */
#define TWFF_PICT 1      /* Macintosh PICT               */
#define TWFF_BMP 2       /* Windows Bitmap               */
#define TWFF_XBM 3       /* X-Windows Bitmap             */
#define TWFF_JFIF 4      /* JPEG File Interchange Format */
#define TWFF_FPX 5       /* Flash Pix                    */
#define TWFF_TIFFMULTI 6 /* Multi-page tiff file         */
#define TWFF_PNG 7
#define TWFF_SPIFF 8
#define TWFF_EXIF 9
#define TWFF_PDF 10    /* 1.91 NB: this is not PDF/A */
#define TWFF_JP2 11    /* 1.91 */
#define TWFF_JPX 13    /* 1.91 */
#define TWFF_DEJAVU 14 /* 1.91 */
#define TWFF_PDFA 15   /* 2.0 Adobe PDF/A, Version 1*/
#define TWFF_PDFA2 16  /* 2.1 Adobe PDF/A, Version 2*/

/* ICAP_FLASHUSED2 values (FL_ means flash) */
#define TWFL_NONE 0
#define TWFL_OFF 1
#define TWFL_ON 2
#define TWFL_AUTO 3
#define TWFL_REDEYE 4

/* CAP_FEEDERORDER values (FO_ means feeder order) */
#define TWFO_FIRSTPAGEFIRST 0
#define TWFO_LASTPAGEFIRST 1

/* CAP_FEEDERPOCKET */
#define TWFP_POCKETERROR 0
#define TWFP_POCKET1 1
#define TWFP_POCKET2 2
#define TWFP_POCKET3 3
#define TWFP_POCKET4 4
#define TWFP_POCKET5 5
#define TWFP_POCKET6 6
#define TWFP_POCKET7 7
#define TWFP_POCKET8 8
#define TWFP_POCKET9 9
#define TWFP_POCKET10 10
#define TWFP_POCKET11 11
#define TWFP_POCKET12 12
#define TWFP_POCKET13 13
#define TWFP_POCKET14 14
#define TWFP_POCKET15 15
#define TWFP_POCKET16 16

/* ICAP_FLIPROTATION values (FR_ means flip rotation) */
#define TWFR_BOOK 0
#define TWFR_FANFOLD 1

/* ICAP_FILTER values (FT_ means Filter Type) */
#define TWFT_RED 0
#define TWFT_GREEN 1
#define TWFT_BLUE 2
#define TWFT_NONE 3
#define TWFT_WHITE 4
#define TWFT_CYAN 5
#define TWFT_MAGENTA 6
#define TWFT_YELLOW 7
#define TWFT_BLACK 8

/* TW_FILESYSTEM.FileType values (FY_ means file type) */
#define TWFY_CAMERA 0
#define TWFY_CAMERATOP 1
#define TWFY_CAMERABOTTOM 2
#define TWFY_CAMERAPREVIEW 3
#define TWFY_DOMAIN 4
#define TWFY_HOST 5
#define TWFY_DIRECTORY 6
#define TWFY_IMAGE 7
#define TWFY_UNKNOWN 8

/* ICAP_ICCPROFILE */
#define TWIC_NONE 0
#define TWIC_LINK 1
#define TWIC_EMBED 2

/* ICAP_IMAGEFILTER values (IF_ means image filter) */
#define TWIF_NONE 0
#define TWIF_AUTO 1
#define TWIF_LOWPASS 2
#define TWIF_BANDPASS 3
#define TWIF_HIGHPASS 4
#define TWIF_TEXT TWIF_BANDPASS
#define TWIF_FINELINE TWIF_HIGHPASS

/* ICAP_IMAGEMERGE values (IM_ means image merge) */
#define TWIM_NONE 0
#define TWIM_FRONTONTOP 1
#define TWIM_FRONTONBOTTOM 2
#define TWIM_FRONTONLEFT 3
#define TWIM_FRONTONRIGHT 4

/* CAP_JOBCONTROL values Added 1.7  */
#define TWJC_NONE 0
#define TWJC_JSIC 1
#define TWJC_JSIS 2
#define TWJC_JSXC 3
#define TWJC_JSXS 4

/* ICAP_JPEGQUALITY values (JQ_ means jpeg quality) */
#define TWJQ_UNKNOWN -4
#define TWJQ_LOW -3
#define TWJQ_MEDIUM -2
#define TWJQ_HIGH -1

/* ICAP_LIGHTPATH values (LP_ means Light Path) */
#define TWLP_REFLECTIVE 0
#define TWLP_TRANSMISSIVE 1

/* ICAP_LIGHTSOURCE values (LS_ means Light Source) */
#define TWLS_RED 0
#define TWLS_GREEN 1
#define TWLS_BLUE 2
#define TWLS_NONE 3
#define TWLS_WHITE 4
#define TWLS_UV 5
#define TWLS_IR 6

/* TWEI_MAGTYPE values (MD_ means Mag Type) Added 2.0 */
#define TWMD_MICR 0    /* Added 2.0 */
#define TWMD_RAW 1     /* added 2.1 */
#define TWMD_INVALID 2 /* added 2.1 */

/* ICAP_NOISEFILTER values (NF_ means noise filter) */
#define TWNF_NONE 0
#define TWNF_AUTO 1
#define TWNF_LONEPIXEL 2
#define TWNF_MAJORITYRULE 3

/* ICAP_ORIENTATION values (OR_ means ORientation) */
#define TWOR_ROT0 0
#define TWOR_ROT90 1
#define TWOR_ROT180 2
#define TWOR_ROT270 3
#define TWOR_PORTRAIT TWOR_ROT0
#define TWOR_LANDSCAPE TWOR_ROT270
#define TWOR_AUTO 4        /* 2.0 */
#define TWOR_AUTOTEXT 5    /* 2.0 */
#define TWOR_AUTOPICTURE 6 /* 2.0 */

/* ICAP_OVERSCAN values (OV_ means overscan) */
#define TWOV_NONE 0
#define TWOV_AUTO 1
#define TWOV_TOPBOTTOM 2
#define TWOV_LEFTRIGHT 3
#define TWOV_ALL 4

/* Palette types for TW_PALETTE8 */
#define TWPA_RGB 0
#define TWPA_GRAY 1
#define TWPA_CMY 2

/* ICAP_PLANARCHUNKY values (PC_ means Planar/Chunky ) */
#define TWPC_CHUNKY 0
#define TWPC_PLANAR 1

/* TWEI_PATCHCODE values Added 1.7 */
#define TWPCH_PATCH1 0
#define TWPCH_PATCH2 1
#define TWPCH_PATCH3 2
#define TWPCH_PATCH4 3
#define TWPCH_PATCH6 4
#define TWPCH_PATCHT 5

/* ICAP_PIXELFLAVOR values (PF_ means Pixel Flavor) */
#define TWPF_CHOCOLATE 0 /* zero pixel represents darkest shade  */
#define TWPF_VANILLA 1   /* zero pixel represents lightest shade */

/* CAP_PRINTERMODE values (PM_ means printer mode) */
#define TWPM_SINGLESTRING 0
#define TWPM_MULTISTRING 1
#define TWPM_COMPOUNDSTRING 2

/* CAP_PRINTER values (PR_ means printer) */
#define TWPR_IMPRINTERTOPBEFORE 0
#define TWPR_IMPRINTERTOPAFTER 1
#define TWPR_IMPRINTERBOTTOMBEFORE 2
#define TWPR_IMPRINTERBOTTOMAFTER 3
#define TWPR_ENDORSERTOPBEFORE 4
#define TWPR_ENDORSERTOPAFTER 5
#define TWPR_ENDORSERBOTTOMBEFORE 6
#define TWPR_ENDORSERBOTTOMAFTER 7

/* CAP_POWERSUPPLY values (PS_ means power supply) */
#define TWPS_EXTERNAL 0
#define TWPS_BATTERY 1

/* ICAP_PIXELTYPE values (PT_ means Pixel Type) */
#define TWPT_BW 0 /* Black and White */
#define TWPT_GRAY 1
#define TWPT_RGB 2
#define TWPT_PALETTE 3
#define TWPT_CMY 4
#define TWPT_CMYK 5
#define TWPT_YUV 6
#define TWPT_YUVK 7
#define TWPT_CIEXYZ 8
#define TWPT_LAB 9
#define TWPT_SRGB 10     /* 1.91 */
#define TWPT_SCRGB 11    /* 1.91 */
#define TWPT_INFRARED 16 /* 2.0 */

/* CAP_SEGMENTED values (SG_ means segmented) Added 1.91 */
#define TWSG_NONE 0
#define TWSG_AUTO 1

/* ICAP_SUPPORTEDSIZES values (SS_ means Supported Sizes) */
#define TWSS_NONE 0
#define TWSS_A4 1
#define TWSS_JISB5 2
#define TWSS_USLETTER 3
#define TWSS_USLEGAL 4
/* Added 1.5 */
#define TWSS_A5 5
#define TWSS_ISOB4 6
#define TWSS_ISOB6 7
/* Added 1.7 */
#define TWSS_USLEDGER 9
#define TWSS_USEXECUTIVE 10
#define TWSS_A3 11
#define TWSS_ISOB3 12
#define TWSS_A6 13
#define TWSS_C4 14
#define TWSS_C5 15
#define TWSS_C6 16
/* Added 1.8 */
#define TWSS_4A0 17
#define TWSS_2A0 18
#define TWSS_A0 19
#define TWSS_A1 20
#define TWSS_A2 21
#define TWSS_A7 22
#define TWSS_A8 23
#define TWSS_A9 24
#define TWSS_A10 25
#define TWSS_ISOB0 26
#define TWSS_ISOB1 27
#define TWSS_ISOB2 28
#define TWSS_ISOB5 29
#define TWSS_ISOB7 30
#define TWSS_ISOB8 31
#define TWSS_ISOB9 32
#define TWSS_ISOB10 33
#define TWSS_JISB0 34
#define TWSS_JISB1 35
#define TWSS_JISB2 36
#define TWSS_JISB3 37
#define TWSS_JISB4 38
#define TWSS_JISB6 39
#define TWSS_JISB7 40
#define TWSS_JISB8 41
#define TWSS_JISB9 42
#define TWSS_JISB10 43
#define TWSS_C0 44
#define TWSS_C1 45
#define TWSS_C2 46
#define TWSS_C3 47
#define TWSS_C7 48
#define TWSS_C8 49
#define TWSS_C9 50
#define TWSS_C10 51
#define TWSS_USSTATEMENT 52
#define TWSS_BUSINESSCARD 53
#define TWSS_MAXSIZE 54 /* Added 2.1 */

/* ICAP_XFERMECH values (SX_ means Setup XFer) */
#define TWSX_NATIVE 0
#define TWSX_FILE 1
#define TWSX_MEMORY 2
#define TWSX_MEMFILE 4 /* added 1.91 */

/* ICAP_UNITS values (UN_ means UNits) */
#define TWUN_INCHES 0
#define TWUN_CENTIMETERS 1
#define TWUN_PICAS 2
#define TWUN_POINTS 3
#define TWUN_TWIPS 4
#define TWUN_PIXELS 5
#define TWUN_MILLIMETERS 6 /* added 1.91 */

/****************************************************************************
 * Country Constants                                                        *
 ****************************************************************************/

#define TWCY_AFGHANISTAN 1001
#define TWCY_ALGERIA 213
#define TWCY_AMERICANSAMOA 684
#define TWCY_ANDORRA 033
#define TWCY_ANGOLA 1002
#define TWCY_ANGUILLA 8090
#define TWCY_ANTIGUA 8091
#define TWCY_ARGENTINA 54
#define TWCY_ARUBA 297
#define TWCY_ASCENSIONI 247
#define TWCY_AUSTRALIA 61
#define TWCY_AUSTRIA 43
#define TWCY_BAHAMAS 8092
#define TWCY_BAHRAIN 973
#define TWCY_BANGLADESH 880
#define TWCY_BARBADOS 8093
#define TWCY_BELGIUM 32
#define TWCY_BELIZE 501
#define TWCY_BENIN 229
#define TWCY_BERMUDA 8094
#define TWCY_BHUTAN 1003
#define TWCY_BOLIVIA 591
#define TWCY_BOTSWANA 267
#define TWCY_BRITAIN 6
#define TWCY_BRITVIRGINIS 8095
#define TWCY_BRAZIL 55
#define TWCY_BRUNEI 673
#define TWCY_BULGARIA 359
#define TWCY_BURKINAFASO 1004
#define TWCY_BURMA 1005
#define TWCY_BURUNDI 1006
#define TWCY_CAMAROON 237
#define TWCY_CANADA 2
#define TWCY_CAPEVERDEIS 238
#define TWCY_CAYMANIS 8096
#define TWCY_CENTRALAFREP 1007
#define TWCY_CHAD 1008
#define TWCY_CHILE 56
#define TWCY_CHINA 86
#define TWCY_CHRISTMASIS 1009
#define TWCY_COCOSIS 1009
#define TWCY_COLOMBIA 57
#define TWCY_COMOROS 1010
#define TWCY_CONGO 1011
#define TWCY_COOKIS 1012
#define TWCY_COSTARICA 506
#define TWCY_CUBA 005
#define TWCY_CYPRUS 357
#define TWCY_CZECHOSLOVAKIA 42
#define TWCY_DENMARK 45
#define TWCY_DJIBOUTI 1013
#define TWCY_DOMINICA 8097
#define TWCY_DOMINCANREP 8098
#define TWCY_EASTERIS 1014
#define TWCY_ECUADOR 593
#define TWCY_EGYPT 20
#define TWCY_ELSALVADOR 503
#define TWCY_EQGUINEA 1015
#define TWCY_ETHIOPIA 251
#define TWCY_FALKLANDIS 1016
#define TWCY_FAEROEIS 298
#define TWCY_FIJIISLANDS 679
#define TWCY_FINLAND 358
#define TWCY_FRANCE 33
#define TWCY_FRANTILLES 596
#define TWCY_FRGUIANA 594
#define TWCY_FRPOLYNEISA 689
#define TWCY_FUTANAIS 1043
#define TWCY_GABON 241
#define TWCY_GAMBIA 220
#define TWCY_GERMANY 49
#define TWCY_GHANA 233
#define TWCY_GIBRALTER 350
#define TWCY_GREECE 30
#define TWCY_GREENLAND 299
#define TWCY_GRENADA 8099
#define TWCY_GRENEDINES 8015
#define TWCY_GUADELOUPE 590
#define TWCY_GUAM 671
#define TWCY_GUANTANAMOBAY 5399
#define TWCY_GUATEMALA 502
#define TWCY_GUINEA 224
#define TWCY_GUINEABISSAU 1017
#define TWCY_GUYANA 592
#define TWCY_HAITI 509
#define TWCY_HONDURAS 504
#define TWCY_HONGKONG 852
#define TWCY_HUNGARY 36
#define TWCY_ICELAND 354
#define TWCY_INDIA 91
#define TWCY_INDONESIA 62
#define TWCY_IRAN 98
#define TWCY_IRAQ 964
#define TWCY_IRELAND 353
#define TWCY_ISRAEL 972
#define TWCY_ITALY 39
#define TWCY_IVORYCOAST 225
#define TWCY_JAMAICA 8010
#define TWCY_JAPAN 81
#define TWCY_JORDAN 962
#define TWCY_KENYA 254
#define TWCY_KIRIBATI 1018
#define TWCY_KOREA 82
#define TWCY_KUWAIT 965
#define TWCY_LAOS 1019
#define TWCY_LEBANON 1020
#define TWCY_LIBERIA 231
#define TWCY_LIBYA 218
#define TWCY_LIECHTENSTEIN 41
#define TWCY_LUXENBOURG 352
#define TWCY_MACAO 853
#define TWCY_MADAGASCAR 1021
#define TWCY_MALAWI 265
#define TWCY_MALAYSIA 60
#define TWCY_MALDIVES 960
#define TWCY_MALI 1022
#define TWCY_MALTA 356
#define TWCY_MARSHALLIS 692
#define TWCY_MAURITANIA 1023
#define TWCY_MAURITIUS 230
#define TWCY_MEXICO 3
#define TWCY_MICRONESIA 691
#define TWCY_MIQUELON 508
#define TWCY_MONACO 33
#define TWCY_MONGOLIA 1024
#define TWCY_MONTSERRAT 8011
#define TWCY_MOROCCO 212
#define TWCY_MOZAMBIQUE 1025
#define TWCY_NAMIBIA 264
#define TWCY_NAURU 1026
#define TWCY_NEPAL 977
#define TWCY_NETHERLANDS 31
#define TWCY_NETHANTILLES 599
#define TWCY_NEVIS 8012
#define TWCY_NEWCALEDONIA 687
#define TWCY_NEWZEALAND 64
#define TWCY_NICARAGUA 505
#define TWCY_NIGER 227
#define TWCY_NIGERIA 234
#define TWCY_NIUE 1027
#define TWCY_NORFOLKI 1028
#define TWCY_NORWAY 47
#define TWCY_OMAN 968
#define TWCY_PAKISTAN 92
#define TWCY_PALAU 1029
#define TWCY_PANAMA 507
#define TWCY_PARAGUAY 595
#define TWCY_PERU 51
#define TWCY_PHILLIPPINES 63
#define TWCY_PITCAIRNIS 1030
#define TWCY_PNEWGUINEA 675
#define TWCY_POLAND 48
#define TWCY_PORTUGAL 351
#define TWCY_QATAR 974
#define TWCY_REUNIONI 1031
#define TWCY_ROMANIA 40
#define TWCY_RWANDA 250
#define TWCY_SAIPAN 670
#define TWCY_SANMARINO 39
#define TWCY_SAOTOME 1033
#define TWCY_SAUDIARABIA 966
#define TWCY_SENEGAL 221
#define TWCY_SEYCHELLESIS 1034
#define TWCY_SIERRALEONE 1035
#define TWCY_SINGAPORE 65
#define TWCY_SOLOMONIS 1036
#define TWCY_SOMALI 1037
#define TWCY_SOUTHAFRICA 27
#define TWCY_SPAIN 34
#define TWCY_SRILANKA 94
#define TWCY_STHELENA 1032
#define TWCY_STKITTS 8013
#define TWCY_STLUCIA 8014
#define TWCY_STPIERRE 508
#define TWCY_STVINCENT 8015
#define TWCY_SUDAN 1038
#define TWCY_SURINAME 597
#define TWCY_SWAZILAND 268
#define TWCY_SWEDEN 46
#define TWCY_SWITZERLAND 41
#define TWCY_SYRIA 1039
#define TWCY_TAIWAN 886
#define TWCY_TANZANIA 255
#define TWCY_THAILAND 66
#define TWCY_TOBAGO 8016
#define TWCY_TOGO 228
#define TWCY_TONGAIS 676
#define TWCY_TRINIDAD 8016
#define TWCY_TUNISIA 216
#define TWCY_TURKEY 90
#define TWCY_TURKSCAICOS 8017
#define TWCY_TUVALU 1040
#define TWCY_UGANDA 256
#define TWCY_USSR 7
#define TWCY_UAEMIRATES 971
#define TWCY_UNITEDKINGDOM 44
#define TWCY_USA 1
#define TWCY_URUGUAY 598
#define TWCY_VANUATU 1041
#define TWCY_VATICANCITY 39
#define TWCY_VENEZUELA 58
#define TWCY_WAKE 1042
#define TWCY_WALLISIS 1043
#define TWCY_WESTERNSAHARA 1044
#define TWCY_WESTERNSAMOA 1045
#define TWCY_YEMEN 1046
#define TWCY_YUGOSLAVIA 38
#define TWCY_ZAIRE 243
#define TWCY_ZAMBIA 260
#define TWCY_ZIMBABWE 263
/* Added for 1.8 */
#define TWCY_ALBANIA 355
#define TWCY_ARMENIA 374
#define TWCY_AZERBAIJAN 994
#define TWCY_BELARUS 375
#define TWCY_BOSNIAHERZGO 387
#define TWCY_CAMBODIA 855
#define TWCY_CROATIA 385
#define TWCY_CZECHREPUBLIC 420
#define TWCY_DIEGOGARCIA 246
#define TWCY_ERITREA 291
#define TWCY_ESTONIA 372
#define TWCY_GEORGIA 995
#define TWCY_LATVIA 371
#define TWCY_LESOTHO 266
#define TWCY_LITHUANIA 370
#define TWCY_MACEDONIA 389
#define TWCY_MAYOTTEIS 269
#define TWCY_MOLDOVA 373
#define TWCY_MYANMAR 95
#define TWCY_NORTHKOREA 850
#define TWCY_PUERTORICO 787
#define TWCY_RUSSIA 7
#define TWCY_SERBIA 381
#define TWCY_SLOVAKIA 421
#define TWCY_SLOVENIA 386
#define TWCY_SOUTHKOREA 82
#define TWCY_UKRAINE 380
#define TWCY_USVIRGINIS 340
#define TWCY_VIETNAM 84

/****************************************************************************
 * Language Constants                                                       *
 ****************************************************************************/
/* Added for 1.8 */
#define TWLG_USERLOCALE -1
#define TWLG_DANISH 0          /* Danish                 */
#define TWLG_DUTCH 1           /* Dutch                  */
#define TWLG_ENGLISH 2         /* International English  */
#define TWLG_FRENCH_CANADIAN 3 /* French Canadian        */
#define TWLG_FINNISH 4         /* Finnish                */
#define TWLG_FRENCH 5          /* French                 */
#define TWLG_GERMAN 6          /* German                 */
#define TWLG_ICELANDIC 7       /* Icelandic              */
#define TWLG_ITALIAN 8         /* Italian                */
#define TWLG_NORWEGIAN 9       /* Norwegian              */
#define TWLG_PORTUGUESE 10     /* Portuguese             */
#define TWLG_SPANISH 11        /* Spanish                */
#define TWLG_SWEDISH 12        /* Swedish                */
#define TWLG_ENGLISH_USA 13    /* U.S. English           */
#define TWLG_AFRIKAANS 14
#define TWLG_ALBANIA 15
#define TWLG_ARABIC 16
#define TWLG_ARABIC_ALGERIA 17
#define TWLG_ARABIC_BAHRAIN 18
#define TWLG_ARABIC_EGYPT 19
#define TWLG_ARABIC_IRAQ 20
#define TWLG_ARABIC_JORDAN 21
#define TWLG_ARABIC_KUWAIT 22
#define TWLG_ARABIC_LEBANON 23
#define TWLG_ARABIC_LIBYA 24
#define TWLG_ARABIC_MOROCCO 25
#define TWLG_ARABIC_OMAN 26
#define TWLG_ARABIC_QATAR 27
#define TWLG_ARABIC_SAUDIARABIA 28
#define TWLG_ARABIC_SYRIA 29
#define TWLG_ARABIC_TUNISIA 30
#define TWLG_ARABIC_UAE 31 /* United Arabic Emirates */
#define TWLG_ARABIC_YEMEN 32
#define TWLG_BASQUE 33
#define TWLG_BYELORUSSIAN 34
#define TWLG_BULGARIAN 35
#define TWLG_CATALAN 36
#define TWLG_CHINESE 37
#define TWLG_CHINESE_HONGKONG 38
#define TWLG_CHINESE_PRC 39 /* People's Republic of China */
#define TWLG_CHINESE_SINGAPORE 40
#define TWLG_CHINESE_SIMPLIFIED 41
#define TWLG_CHINESE_TAIWAN 42
#define TWLG_CHINESE_TRADITIONAL 43
#define TWLG_CROATIA 44
#define TWLG_CZECH 45
#define TWLG_DUTCH_BELGIAN 46
#define TWLG_ENGLISH_AUSTRALIAN 47
#define TWLG_ENGLISH_CANADIAN 48
#define TWLG_ENGLISH_IRELAND 49
#define TWLG_ENGLISH_NEWZEALAND 50
#define TWLG_ENGLISH_SOUTHAFRICA 51
#define TWLG_ENGLISH_UK 52
#define TWLG_ESTONIAN 53
#define TWLG_FAEROESE 54
#define TWLG_FARSI 55
#define TWLG_FRENCH_BELGIAN 56
#define TWLG_FRENCH_LUXEMBOURG 57
#define TWLG_FRENCH_SWISS 58
#define TWLG_GERMAN_AUSTRIAN 59
#define TWLG_GERMAN_LUXEMBOURG 60
#define TWLG_GERMAN_LIECHTENSTEIN 61
#define TWLG_GERMAN_SWISS 62
#define TWLG_GREEK 63
#define TWLG_HEBREW 64
#define TWLG_HUNGARIAN 65
#define TWLG_INDONESIAN 66
#define TWLG_ITALIAN_SWISS 67
#define TWLG_JAPANESE 68
#define TWLG_KOREAN 69
#define TWLG_KOREAN_JOHAB 70
#define TWLG_LATVIAN 71
#define TWLG_LITHUANIAN 72
#define TWLG_NORWEGIAN_BOKMAL 73
#define TWLG_NORWEGIAN_NYNORSK 74
#define TWLG_POLISH 75
#define TWLG_PORTUGUESE_BRAZIL 76
#define TWLG_ROMANIAN 77
#define TWLG_RUSSIAN 78
#define TWLG_SERBIAN_LATIN 79
#define TWLG_SLOVAK 80
#define TWLG_SLOVENIAN 81
#define TWLG_SPANISH_MEXICAN 82
#define TWLG_SPANISH_MODERN 83
#define TWLG_THAI 84
#define TWLG_TURKISH 85
#define TWLG_UKRANIAN 86
/* More stuff added for 1.8 */
#define TWLG_ASSAMESE 87
#define TWLG_BENGALI 88
#define TWLG_BIHARI 89
#define TWLG_BODO 90
#define TWLG_DOGRI 91
#define TWLG_GUJARATI 92
#define TWLG_HARYANVI 93
#define TWLG_HINDI 94
#define TWLG_KANNADA 95
#define TWLG_KASHMIRI 96
#define TWLG_MALAYALAM 97
#define TWLG_MARATHI 98
#define TWLG_MARWARI 99
#define TWLG_MEGHALAYAN 100
#define TWLG_MIZO 101
#define TWLG_NAGA 102
#define TWLG_ORISSI 103
#define TWLG_PUNJABI 104
#define TWLG_PUSHTU 105
#define TWLG_SERBIAN_CYRILLIC 106
#define TWLG_SIKKIMI 107
#define TWLG_SWEDISH_FINLAND 108
#define TWLG_TAMIL 109
#define TWLG_TELUGU 110
#define TWLG_TRIPURI 111
#define TWLG_URDU 112
#define TWLG_VIETNAMESE 113

/****************************************************************************
 * Data Groups                                                              *
 ****************************************************************************/

/* More Data Groups may be added in the future.
 * Possible candidates include text, vector graphics, sound, etc.
 * NOTE: Data Group constants must be powers of 2 as they are used
 *       as bitflags when Application asks DSM to present a list of DSs.
 */

#define DG_CONTROL 0x0001L /* data pertaining to control       */
#define DG_IMAGE 0x0002L   /* data pertaining to raster images */
/* Added 1.8 */
#define DG_AUDIO 0x0004L /* data pertaining to audio */

/* More Data Functionality may be added in the future.
 * These are for items that need to be determined before DS is opened.
 * NOTE: Supported Functionality constants must be powers of 2 as they are
 *       used as bitflags when Application asks DSM to present a list of DSs.
 *       to support backward capability the App and DS will not use the fields
 */
#define DF_DSM2 0x10000000L /* added to the identity by the DSM  */
#define DF_APP2                                                                \
  0x20000000L /* Set by the App to indicate it would  prefer to use DSM2 */
#define DF_DS2                                                                 \
  0x40000000L /* Set by the DS to indicate it would prefer to use DSM2 */
#define DG_MASK 0xFFFFL /* all Data Groups limited to 16 bit. Added for 2.1 */

/****************************************************************************
 *                                                        *
 ****************************************************************************/
#define DAT_NULL 0x0000       /* No data or structure. */
#define DAT_CUSTOMBASE 0x8000 /* Base of custom DATs.  */

/* Data Argument Types for the DG_CONTROL Data Group. */
#define DAT_CAPABILITY 0x0001 /* TW_CAPABILITY                        */
#define DAT_EVENT 0x0002      /* TW_EVENT                             */
#define DAT_IDENTITY 0x0003   /* TW_IDENTITY                          */
#define DAT_PARENT 0x0004     /* TW_HANDLE, application win handle in Windows */
#define DAT_PENDINGXFERS 0x0005  /* TW_PENDINGXFERS                      */
#define DAT_SETUPMEMXFER 0x0006  /* TW_SETUPMEMXFER                      */
#define DAT_SETUPFILEXFER 0x0007 /* TW_SETUPFILEXFER                     */
#define DAT_STATUS 0x0008        /* TW_STATUS                            */
#define DAT_USERINTERFACE 0x0009 /* TW_USERINTERFACE                     */
#define DAT_XFERGROUP 0x000a     /* TW_UINT32                            */
#define DAT_CUSTOMDSDATA 0x000c  /* TW_CUSTOMDSDATA.                     */
#define DAT_DEVICEEVENT 0x000d   /* TW_DEVICEEVENT     Added 1.8         */
#define DAT_FILESYSTEM 0x000e    /* TW_FILESYSTEM      Added 1.8         */
#define DAT_PASSTHRU 0x000f      /* TW_PASSTHRU        Added 1.8         */
#define DAT_CALLBACK 0x0010      /* TW_CALLBACK        Added 2.0         */
#define DAT_STATUSUTF8 0x0011    /* TW_STATUSUTF8      Added 2.1         */

/* Data Argument Types for the DG_IMAGE Data Group. */
#define DAT_IMAGEINFO 0x0101       /* TW_IMAGEINFO                         */
#define DAT_IMAGELAYOUT 0x0102     /* TW_IMAGELAYOUT                       */
#define DAT_IMAGEMEMXFER 0x0103    /* TW_IMAGEMEMXFER                      */
#define DAT_IMAGENATIVEXFER 0x0104 /* TW_UINT32 loword is hDIB, PICHandle  */
#define DAT_IMAGEFILEXFER 0x0105   /* Null data                            */
#define DAT_CIECOLOR 0x0106        /* TW_CIECOLOR                          */
#define DAT_GRAYRESPONSE 0x0107    /* TW_GRAYRESPONSE                      */
#define DAT_RGBRESPONSE 0x0108     /* TW_RGBRESPONSE                       */
#define DAT_JPEGCOMPRESSION 0x0109 /* TW_JPEGCOMPRESSION                   */
#define DAT_PALETTE8 0x010a        /* TW_PALETTE8                          */
#define DAT_EXTIMAGEINFO 0x010b    /* TW_EXTIMAGEINFO -- for 1.7 Spec.     */

/* Data Argument Types for the DG_AUDIO Data Group. */
#define DAT_AUDIOFILEXFER 0x0201 /* Null data          Added 1.8         */
#define DAT_AUDIOINFO 0x0202     /* TW_AUDIOINFO       Added 1.8         */
#define DAT_AUDIONATIVEXFER                                                    \
  0x0203 /* TW_UINT32 handle to WAV, (AIFF Mac) Added 1.8 */

/* misplaced */
/* TW_MEMORY   Added 1.91   This Data Argument is misplaced but belongs to the
 * DG_IMAGE Data Group */
#define DAT_ICCPROFILE 0x0401
/* TW_IMAGEMEMXFER   Added 1.91  This Data Argument is misplaced but belongs to
 * the DG_IMAGE Data Group */
#define DAT_IMAGEMEMFILEXFER 0x0402
/* TW_ENTRYPOINT    Added 2.0   This Data Argument is misplaced but belongs to
 * the DG_CONTROL Data Group */
#define DAT_ENTRYPOINT 0x0403

/****************************************************************************
 * Messages                                                                 *
 ****************************************************************************/

/* All message constants are unique.
 * Messages are grouped according to which DATs they are used with.*/

#define MSG_NULL 0x0000       /* Used in TW_EVENT structure               */
#define MSG_CUSTOMBASE 0x8000 /* Base of custom messages                  */

/* Generic messages may be used with any of several DATs.                   */
#define MSG_GET 0x0001          /* Get one or more values                   */
#define MSG_GETCURRENT 0x0002   /* Get current value                        */
#define MSG_GETDEFAULT 0x0003   /* Get default (e.g. power up) value        */
#define MSG_GETFIRST 0x0004     /* Get first of a series of items, e.g. DSs */
#define MSG_GETNEXT 0x0005      /* Iterate through a series of items.       */
#define MSG_SET 0x0006          /* Set one or more values                   */
#define MSG_RESET 0x0007        /* Set current value to default value       */
#define MSG_QUERYSUPPORT 0x0008 /* Get supported operations on the cap.     */
#define MSG_GETHELP                                                            \
  0x0009 /* Returns help text suitable for use in a GUI        Added 2.1 */
#define MSG_GETLABEL                                                           \
  0x000a /* Returns a label suitable for use in a GUI          Added 2.1 */
#define MSG_GETLABELENUM                                                       \
  0x000b /* Return all of the labels for a capability of type  Added 2.1 */

/* Messages used with DAT_NULL                                              */
#define MSG_XFERREADY 0x0101 /* The data source has data ready           */
#define MSG_CLOSEDSREQ                                                         \
  0x0102 /* Request for Application. to close DS               */
#define MSG_CLOSEDSOK                                                          \
  0x0103 /* Tell the Application. to save the state.           */
#define MSG_DEVICEEVENT                                                        \
  0X0104 /* Some event has taken place               Added 1.8 */

/* Messages used with a pointer to DAT_PARENT data                          */
#define MSG_OPENDSM 0x0301  /* Open the DSM                             */
#define MSG_CLOSEDSM 0x0302 /* Close the DSM                            */

/* Messages used with a pointer to a DAT_IDENTITY structure                 */
#define MSG_OPENDS 0x0401     /* Open a data source                       */
#define MSG_CLOSEDS 0x0402    /* Close a data source                      */
#define MSG_USERSELECT 0x0403 /* Put up a dialog of all DS                */

/* Messages used with a pointer to a DAT_USERINTERFACE structure            */
#define MSG_DISABLEDS 0x0501      /* Disable data transfer in the DS          */
#define MSG_ENABLEDS 0x0502       /* Enable data transfer in the DS           */
#define MSG_ENABLEDSUIONLY 0x0503 /* Enable for saving DS state only.     */

/* Messages used with a pointer to a DAT_EVENT structure                    */
#define MSG_PROCESSEVENT 0x0601

/* Messages used with a pointer to a DAT_PENDINGXFERS structure             */
#define MSG_ENDXFER 0x0701
#define MSG_STOPFEEDER 0x0702

/* Messages used with a pointer to a DAT_FILESYSTEM structure               */
#define MSG_CHANGEDIRECTORY 0x0801           /* Added 1.8 */
#define MSG_CREATEDIRECTORY 0x0802           /* Added 1.8 */
#define MSG_DELETE 0x0803                    /* Added 1.8 */
#define MSG_FORMATMEDIA 0x0804               /* Added 1.8 */
#define MSG_GETCLOSE 0x0805                  /* Added 1.8 */
#define MSG_GETFIRSTFILE 0x0806              /* Added 1.8 */
#define MSG_GETINFO 0x0807                   /* Added 1.8 */
#define MSG_GETNEXTFILE 0x0808               /* Added 1.8 */
#define MSG_RENAME 0x0809                    /* Added 1.8 */
#define MSG_COPY 0x080A                      /* Added 1.8 */
#define MSG_AUTOMATICCAPTUREDIRECTORY 0x080B /* Added 1.8 */

/* Messages used with a pointer to a DAT_PASSTHRU structure                 */
#define MSG_PASSTHRU 0x0901

/* used with DAT_CALLBACK */
#define MSG_REGISTER_CALLBACK 0x0902

/* used with DAT_CAPABILITY */
#define MSG_RESETALL 0x0A01 /*  Added 1.91 */

/****************************************************************************
 * Capabilities                                                             *
 ****************************************************************************/

#define CAP_CUSTOMBASE 0x8000 /* Base of custom capabilities */

/* all data sources are REQUIRED to support these caps */
#define CAP_XFERCOUNT 0x0001

/* image data sources are REQUIRED to support these caps */
#define ICAP_COMPRESSION 0x0100
#define ICAP_PIXELTYPE 0x0101
#define ICAP_UNITS 0x0102 /* default is TWUN_INCHES */
#define ICAP_XFERMECH 0x0103

/* all data sources MAY support these caps */
#define CAP_AUTHOR 0x1000
#define CAP_CAPTION 0x1001
#define CAP_FEEDERENABLED 0x1002
#define CAP_FEEDERLOADED 0x1003
#define CAP_TIMEDATE 0x1004
#define CAP_SUPPORTEDCAPS 0x1005
#define CAP_EXTENDEDCAPS 0x1006
#define CAP_AUTOFEED 0x1007
#define CAP_CLEARPAGE 0x1008
#define CAP_FEEDPAGE 0x1009
#define CAP_REWINDPAGE 0x100a
#define CAP_INDICATORS 0x100b             /* Added 1.1 */
#define CAP_SUPPORTEDCAPSEXT 0x100c       /* Added 1.6 */
#define CAP_PAPERDETECTABLE 0x100d        /* Added 1.6 */
#define CAP_UICONTROLLABLE 0x100e         /* Added 1.6 */
#define CAP_DEVICEONLINE 0x100f           /* Added 1.6 */
#define CAP_AUTOSCAN 0x1010               /* Added 1.6 */
#define CAP_THUMBNAILSENABLED 0x1011      /* Added 1.7 */
#define CAP_DUPLEX 0x1012                 /* Added 1.7 */
#define CAP_DUPLEXENABLED 0x1013          /* Added 1.7 */
#define CAP_ENABLEDSUIONLY 0x1014         /* Added 1.7 */
#define CAP_CUSTOMDSDATA 0x1015           /* Added 1.7 */
#define CAP_ENDORSER 0x1016               /* Added 1.7 */
#define CAP_JOBCONTROL 0x1017             /* Added 1.7 */
#define CAP_ALARMS 0x1018                 /* Added 1.8 */
#define CAP_ALARMVOLUME 0x1019            /* Added 1.8 */
#define CAP_AUTOMATICCAPTURE 0x101a       /* Added 1.8 */
#define CAP_TIMEBEFOREFIRSTCAPTURE 0x101b /* Added 1.8 */
#define CAP_TIMEBETWEENCAPTURES 0x101c    /* Added 1.8 */
#define CAP_CLEARBUFFERS 0x101d           /* Added 1.8 */
#define CAP_MAXBATCHBUFFERS 0x101e        /* Added 1.8 */
#define CAP_DEVICETIMEDATE 0x101f         /* Added 1.8 */
#define CAP_POWERSUPPLY 0x1020            /* Added 1.8 */
#define CAP_CAMERAPREVIEWUI 0x1021        /* Added 1.8 */
#define CAP_DEVICEEVENT 0x1022            /* Added 1.8 */
#define CAP_SERIALNUMBER 0x1024           /* Added 1.8 */
#define CAP_PRINTER 0x1026                /* Added 1.8 */
#define CAP_PRINTERENABLED 0x1027         /* Added 1.8 */
#define CAP_PRINTERINDEX 0x1028           /* Added 1.8 */
#define CAP_PRINTERMODE 0x1029            /* Added 1.8 */
#define CAP_PRINTERSTRING 0x102a          /* Added 1.8 */
#define CAP_PRINTERSUFFIX 0x102b          /* Added 1.8 */
#define CAP_LANGUAGE 0x102c               /* Added 1.8 */
#define CAP_FEEDERALIGNMENT 0x102d        /* Added 1.8 */
#define CAP_FEEDERORDER 0x102e            /* Added 1.8 */
#define CAP_REACQUIREALLOWED 0x1030       /* Added 1.8 */
#define CAP_BATTERYMINUTES 0x1032         /* Added 1.8 */
#define CAP_BATTERYPERCENTAGE 0x1033      /* Added 1.8 */
#define CAP_CAMERASIDE 0x1034             /* Added 1.91 */
#define CAP_SEGMENTED 0x1035              /* Added 1.91 */
#define CAP_CAMERAENABLED 0x1036          /* Added 2.0 */
#define CAP_CAMERAORDER 0x1037            /* Added 2.0 */
#define CAP_MICRENABLED 0x1038            /* Added 2.0 */
#define CAP_FEEDERPREP 0x1039             /* Added 2.0 */
#define CAP_FEEDERPOCKET 0x103a           /* Added 2.0 */
#define CAP_AUTOMATICSENSEMEDIUM 0x103b   /* Added 2.1 */
#define CAP_CUSTOMINTERFACEGUID 0x103c    /* Added 2.1 */

/* image data sources MAY support these caps */
#define ICAP_AUTOBRIGHT 0x1100
#define ICAP_BRIGHTNESS 0x1101
#define ICAP_CONTRAST 0x1103
#define ICAP_CUSTHALFTONE 0x1104
#define ICAP_EXPOSURETIME 0x1105
#define ICAP_FILTER 0x1106
#define ICAP_FLASHUSED 0x1107
#define ICAP_GAMMA 0x1108
#define ICAP_HALFTONES 0x1109
#define ICAP_HIGHLIGHT 0x110a
#define ICAP_IMAGEFILEFORMAT 0x110c
#define ICAP_LAMPSTATE 0x110d
#define ICAP_LIGHTSOURCE 0x110e
#define ICAP_ORIENTATION 0x1110
#define ICAP_PHYSICALWIDTH 0x1111
#define ICAP_PHYSICALHEIGHT 0x1112
#define ICAP_SHADOW 0x1113
#define ICAP_FRAMES 0x1114
#define ICAP_XNATIVERESOLUTION 0x1116
#define ICAP_YNATIVERESOLUTION 0x1117
#define ICAP_XRESOLUTION 0x1118
#define ICAP_YRESOLUTION 0x1119
#define ICAP_MAXFRAMES 0x111a
#define ICAP_TILES 0x111b
#define ICAP_BITORDER 0x111c
#define ICAP_CCITTKFACTOR 0x111d
#define ICAP_LIGHTPATH 0x111e
#define ICAP_PIXELFLAVOR 0x111f
#define ICAP_PLANARCHUNKY 0x1120
#define ICAP_ROTATION 0x1121
#define ICAP_SUPPORTEDSIZES 0x1122
#define ICAP_THRESHOLD 0x1123
#define ICAP_XSCALING 0x1124
#define ICAP_YSCALING 0x1125
#define ICAP_BITORDERCODES 0x1126
#define ICAP_PIXELFLAVORCODES 0x1127
#define ICAP_JPEGPIXELTYPE 0x1128
#define ICAP_TIMEFILL 0x112a
#define ICAP_BITDEPTH 0x112b
#define ICAP_BITDEPTHREDUCTION 0x112c               /* Added 1.5 */
#define ICAP_UNDEFINEDIMAGESIZE 0x112d              /* Added 1.6 */
#define ICAP_IMAGEDATASET 0x112e                    /* Added 1.7 */
#define ICAP_EXTIMAGEINFO 0x112f                    /* Added 1.7 */
#define ICAP_MINIMUMHEIGHT 0x1130                   /* Added 1.7 */
#define ICAP_MINIMUMWIDTH 0x1131                    /* Added 1.7 */
#define ICAP_AUTODISCARDBLANKPAGES 0x1134           /* Added 2.0 */
#define ICAP_FLIPROTATION 0x1136                    /* Added 1.8 */
#define ICAP_BARCODEDETECTIONENABLED 0x1137         /* Added 1.8 */
#define ICAP_SUPPORTEDBARCODETYPES 0x1138           /* Added 1.8 */
#define ICAP_BARCODEMAXSEARCHPRIORITIES 0x1139      /* Added 1.8 */
#define ICAP_BARCODESEARCHPRIORITIES 0x113a         /* Added 1.8 */
#define ICAP_BARCODESEARCHMODE 0x113b               /* Added 1.8 */
#define ICAP_BARCODEMAXRETRIES 0x113c               /* Added 1.8 */
#define ICAP_BARCODETIMEOUT 0x113d                  /* Added 1.8 */
#define ICAP_ZOOMFACTOR 0x113e                      /* Added 1.8 */
#define ICAP_PATCHCODEDETECTIONENABLED 0x113f       /* Added 1.8 */
#define ICAP_SUPPORTEDPATCHCODETYPES 0x1140         /* Added 1.8 */
#define ICAP_PATCHCODEMAXSEARCHPRIORITIES 0x1141    /* Added 1.8 */
#define ICAP_PATCHCODESEARCHPRIORITIES 0x1142       /* Added 1.8 */
#define ICAP_PATCHCODESEARCHMODE 0x1143             /* Added 1.8 */
#define ICAP_PATCHCODEMAXRETRIES 0x1144             /* Added 1.8 */
#define ICAP_PATCHCODETIMEOUT 0x1145                /* Added 1.8 */
#define ICAP_FLASHUSED2 0x1146                      /* Added 1.8 */
#define ICAP_IMAGEFILTER 0x1147                     /* Added 1.8 */
#define ICAP_NOISEFILTER 0x1148                     /* Added 1.8 */
#define ICAP_OVERSCAN 0x1149                        /* Added 1.8 */
#define ICAP_AUTOMATICBORDERDETECTION 0x1150        /* Added 1.8 */
#define ICAP_AUTOMATICDESKEW 0x1151                 /* Added 1.8 */
#define ICAP_AUTOMATICROTATE 0x1152                 /* Added 1.8 */
#define ICAP_JPEGQUALITY 0x1153                     /* Added 1.9 */
#define ICAP_FEEDERTYPE 0x1154                      /* Added 1.91 */
#define ICAP_ICCPROFILE 0x1155                      /* Added 1.91 */
#define ICAP_AUTOSIZE 0x1156                        /* Added 2.0 */
#define ICAP_AUTOMATICCROPUSESFRAME 0x1157          /* Added 2.1 */
#define ICAP_AUTOMATICLENGTHDETECTION 0x1158        /* Added 2.1 */
#define ICAP_AUTOMATICCOLORENABLED 0x1159           /* Added 2.1 */
#define ICAP_AUTOMATICCOLORNONCOLORPIXELTYPE 0x115a /* Added 2.1 */
#define ICAP_COLORMANAGEMENTENABLED 0x115b          /* Added 2.1 */
#define ICAP_IMAGEMERGE 0x115c                      /* Added 2.1 */
#define ICAP_IMAGEMERGEHEIGHTTHRESHOLD 0x115d       /* Added 2.1 */
#define ICAP_SUPPORTEDEXTIMAGEINFO 0x115e           /* Added 2.1 */

/* image data sources MAY support these audio caps */
#define ACAP_XFERMECH 0x1202 /* Added 1.8 */

/***************************************************************************
 *            Extended Image Info Attributes section  Added 1.7            *
 ***************************************************************************/

#define TWEI_BARCODEX 0x1200
#define TWEI_BARCODEY 0x1201
#define TWEI_BARCODETEXT 0x1202
#define TWEI_BARCODETYPE 0x1203
#define TWEI_DESHADETOP 0x1204
#define TWEI_DESHADELEFT 0x1205
#define TWEI_DESHADEHEIGHT 0x1206
#define TWEI_DESHADEWIDTH 0x1207
#define TWEI_DESHADESIZE 0x1208
#define TWEI_SPECKLESREMOVED 0x1209
#define TWEI_HORZLINEXCOORD 0x120A
#define TWEI_HORZLINEYCOORD 0x120B
#define TWEI_HORZLINELENGTH 0x120C
#define TWEI_HORZLINETHICKNESS 0x120D
#define TWEI_VERTLINEXCOORD 0x120E
#define TWEI_VERTLINEYCOORD 0x120F
#define TWEI_VERTLINELENGTH 0x1210
#define TWEI_VERTLINETHICKNESS 0x1211
#define TWEI_PATCHCODE 0x1212
#define TWEI_ENDORSEDTEXT 0x1213
#define TWEI_FORMCONFIDENCE 0x1214
#define TWEI_FORMTEMPLATEMATCH 0x1215
#define TWEI_FORMTEMPLATEPAGEMATCH 0x1216
#define TWEI_FORMHORZDOCOFFSET 0x1217
#define TWEI_FORMVERTDOCOFFSET 0x1218
#define TWEI_BARCODECOUNT 0x1219
#define TWEI_BARCODECONFIDENCE 0x121A
#define TWEI_BARCODEROTATION 0x121B
#define TWEI_BARCODETEXTLENGTH 0x121C
#define TWEI_DESHADECOUNT 0x121D
#define TWEI_DESHADEBLACKCOUNTOLD 0x121E
#define TWEI_DESHADEBLACKCOUNTNEW 0x121F
#define TWEI_DESHADEBLACKRLMIN 0x1220
#define TWEI_DESHADEBLACKRLMAX 0x1221
#define TWEI_DESHADEWHITECOUNTOLD 0x1222
#define TWEI_DESHADEWHITECOUNTNEW 0x1223
#define TWEI_DESHADEWHITERLMIN 0x1224
#define TWEI_DESHADEWHITERLAVE 0x1225
#define TWEI_DESHADEWHITERLMAX 0x1226
#define TWEI_BLACKSPECKLESREMOVED 0x1227
#define TWEI_WHITESPECKLESREMOVED 0x1228
#define TWEI_HORZLINECOUNT 0x1229
#define TWEI_VERTLINECOUNT 0x122A
#define TWEI_DESKEWSTATUS 0x122B
#define TWEI_SKEWORIGINALANGLE 0x122C
#define TWEI_SKEWFINALANGLE 0x122D
#define TWEI_SKEWCONFIDENCE 0x122E
#define TWEI_SKEWWINDOWX1 0x122F
#define TWEI_SKEWWINDOWY1 0x1230
#define TWEI_SKEWWINDOWX2 0x1231
#define TWEI_SKEWWINDOWY2 0x1232
#define TWEI_SKEWWINDOWX3 0x1233
#define TWEI_SKEWWINDOWY3 0x1234
#define TWEI_SKEWWINDOWX4 0x1235
#define TWEI_SKEWWINDOWY4 0x1236
#define TWEI_BOOKNAME 0x1238         /* added 1.9 */
#define TWEI_CHAPTERNUMBER 0x1239    /* added 1.9 */
#define TWEI_DOCUMENTNUMBER 0x123A   /* added 1.9 */
#define TWEI_PAGENUMBER 0x123B       /* added 1.9 */
#define TWEI_CAMERA 0x123C           /* added 1.9 */
#define TWEI_FRAMENUMBER 0x123D      /* added 1.9 */
#define TWEI_FRAME 0x123E            /* added 1.9 */
#define TWEI_PIXELFLAVOR 0x123F      /* added 1.9 */
#define TWEI_ICCPROFILE 0x1240       /* added 1.91 */
#define TWEI_LASTSEGMENT 0x1241      /* added 1.91 */
#define TWEI_SEGMENTNUMBER 0x1242    /* added 1.91 */
#define TWEI_MAGDATA 0x1243          /* added 2.0 */
#define TWEI_MAGTYPE 0x1244          /* added 2.0 */
#define TWEI_PAGESIDE 0x1245         /* added 2.0 */
#define TWEI_FILESYSTEMSOURCE 0x1246 /* added 2.0 */
#define TWEI_IMAGEMERGED 0x1247      /* added 2.1 */
#define TWEI_MAGDATALENGTH 0x1248    /* added 2.1 */

#define TWEJ_NONE 0x0000
#define TWEJ_MIDSEPARATOR 0x0001
#define TWEJ_PATCH1 0x0002
#define TWEJ_PATCH2 0x0003
#define TWEJ_PATCH3 0x0004
#define TWEJ_PATCH4 0x0005
#define TWEJ_PATCH6 0x0006
#define TWEJ_PATCHT 0x0007

/***************************************************************************
 *            Return Codes and Condition Codes section                     *
 ***************************************************************************/

/* Return Codes: DSM_Entry and DS_Entry may return any one of these values. */
#define TWRC_CUSTOMBASE 0x8000

#define TWRC_SUCCESS 0
#define TWRC_FAILURE 1 /* Application may get TW_STATUS for info on failure */
#define TWRC_CHECKSTATUS 2 /* "tried hard"; get status                  */
#define TWRC_CANCEL 3
#define TWRC_DSEVENT 4
#define TWRC_NOTDSEVENT 5
#define TWRC_XFERDONE 6
#define TWRC_ENDOFLIST 7 /* After MSG_GETNEXT if nothing left         */
#define TWRC_INFONOTSUPPORTED 8
#define TWRC_DATANOTAVAILABLE 9

// Condition Codes: Application gets these
// by doing DG_CONTROL DAT_STATUS MSG_GET.
#define TWCC_CUSTOMBASE 0x8000

// It worked!
#define TWCC_SUCCESS 0
// Failure due to unknown causes
#define TWCC_BUMMER 1
// Not enough memory to perform operation
#define TWCC_LOWMEMORY 2
// No Data Source
#define TWCC_NODS 3
// DS is connected to max possible applications
#define TWCC_MAXCONNECTIONS 4
// DS or DSM reported error, application shouldn't
#define TWCC_OPERATIONERROR 5
// Unknown capability
#define TWCC_BADCAP 6
// Unrecognized MSG DG DAT combination
#define TWCC_BADPROTOCOL 9
// Data parameter out of range
#define TWCC_BADVALUE 10
// DG DAT MSG out of expected sequence
#define TWCC_SEQERROR 11
// Unknown destination Application/Source in DSM_Entry
#define TWCC_BADDEST 12
// Capability not supported by source
#define TWCC_CAPUNSUPPORTED 13
// Operation not supported by capability
#define TWCC_CAPBADOPERATION 14
// Capability has dependancy on other capability
#define TWCC_CAPSEQERROR 15
// File System operation is denied (file is protected)
#define TWCC_DENIED 16 /* Added 1.8 */
// Operation failed because file already exists.
#define TWCC_FILEEXISTS 17 /* Added 1.8 */
// File not found
#define TWCC_FILENOTFOUND 18 /* Added 1.8 */
// Operation failed because directory is not empty
#define TWCC_NOTEMPTY 19 /* Added 1.8 */
// The feeder is jammed
#define TWCC_PAPERJAM 20 /* Added 1.8 */
// The feeder detected multiple pages
#define TWCC_PAPERDOUBLEFEED 21 /* Added 1.8 */
// Error writing the file (meant for things like disk full conditions)
#define TWCC_FILEWRITEERROR 22 /*  Added 1.8 */
// The device went offline prior to or during this operation
#define TWCC_CHECKDEVICEONLINE 23 /* Added 1.8 */
#define TWCC_INTERLOCK 24         /* Added 2.0 */
#define TWCC_DAMAGEDCORNER 25     /* Added 2.0 */
#define TWCC_FOCUSERROR 26        /* Added 2.0 */
#define TWCC_DOCTOOLIGHT 27       /* Added 2.0 */
#define TWCC_DOCTOODARK 28        /* Added 2.0 */
#define TWCC_NOMEDIA 29           /* Added 2.1 */

/* bit patterns: for query the operation that are supported by the data source
 * on a capability */
/* Application gets these through DG_CONTROL/DAT_CAPABILITY/MSG_QUERYSUPPORT */
/* Added 1.6 */
#define TWQC_GET 0x0001
#define TWQC_SET 0x0002
#define TWQC_GETDEFAULT 0x0004
#define TWQC_GETCURRENT 0x0008
#define TWQC_RESET 0x0010

/****************************************************************************
 * Depreciated Items                                                        *
 ****************************************************************************/
#ifdef _MSWIN_
#if defined(_WIN32) || defined(WIN64)
#define TW_HUGE
#elif !defined(TWH_CMP_GNU)
#define TW_HUGE huge
#else
#define TW_HUGE
#endif

typedef BYTE TW_HUGE *HPBYTE;
typedef void TW_HUGE *HPVOID;
typedef void TW_HUGE *HPVOID;
#endif /* _MSWIN_ */

typedef unsigned char TW_STR1024[1026], FAR *pTW_STR1026;
typedef wchar_t TW_UNI512[512], FAR *pTW_UNI512;

#define TWTY_STR1024 0x000d /* Means Item is a TW_STR1024...added 1.9 */
#define TWTY_UNI512 0x000e  /* Means Item is a TW_UNI512...added 1.9 */

#define TWFF_JPN 12 /* 1.91 */

// Additional message required for thunker to request the special identity
// information.
#define DAT_TWUNKIDENTITY 0x000b
// Data transfer via a file. deprecated - use DAT_SETUPFILEXFER instead
#define DAT_SETUPFILEXFER2 0x0301

#define CAP_SUPPORTEDCAPSEXT 0x100c
#define CAP_FILESYSTEM                 // 0x????
#define CAP_PAGEMULTIPLEACQUIRE 0x1023 /* Added 1.8 */
#define CAP_PAPERBINDING 0x102f        /* Added 1.8 */
#define CAP_PASSTHRU 0x1031            /* Added 1.8 */
// 0x1034 is reused by CAP_CAMERASIDE
#define CAP_POWERDOWNTIME 0x1034    /* Added 1.8 */
#define ACAP_AUDIOFILEFORMAT 0x1201 /* Added 1.8 */

// Get status information - use MSG_GET instead
#define MSG_CHECKSTATUS 0x0201

// Mac Only, deprecated - use DAT_NULL and MSG_xxx instead
#define MSG_INVOKE_CALLBACK 0x0903

#define TWSX_FILE2 3

/* CAP_FILESYSTEM values (FS_ means file system) */
#define TWFS_FILESYSTEM 0
#define TWFS_RECURSIVEDELETE 1

/* ICAP_PIXELTYPE values (PT_ means Pixel Type) */
#define TWPT_SRGB64 11 /* 1.91 */
#define TWPT_BGR 12    /* 1.91 */
#define TWPT_CIELAB 13 /* 1.91 */
#define TWPT_CIELUV 14 /* 1.91 */
#define TWPT_YCBCR 15  /* 1.91 */

/* ICAP_SUPPORTEDSIZES values (SS_ means Supported Sizes) */
#define TWSS_B 8
#define TWSS_A4LETTER TWSS_A4    /* use TWSS_A4 instead */
#define TWSS_B3 TWSS_ISOB3       /* use TWSS_ISOB3 instead */
#define TWSS_B4 TWSS_ISOB4       /* use TWSS_ISOB4 instead */
#define TWSS_B6 TWSS_ISOB6       /* use TWSS_ISOB6 instead */
#define TWSS_B5LETTER TWSS_JISB5 /* use TWSS_JISB5 instead */

/* CAP_LANGUAGE Language Constants */
#define TWLG_DAN TWLG_DANISH          /* use TWLG_DANISH instead */
#define TWLG_DUT TWLG_DUTCH           /* use TWLG_DUTCH instead */
#define TWLG_ENG TWLG_ENGLISH         /* use TWLG_ENGLISH instead */
#define TWLG_USA TWLG_ENGLISH_USA     /* use TWLG_ENGLISH_USA instead */
#define TWLG_FIN TWLG_FINNISH         /* use TWLG_FINNISH instead */
#define TWLG_FRN TWLG_FRENCH          /* use TWLG_FRENCH instead */
#define TWLG_FCF TWLG_FRENCH_CANADIAN /* use TWLG_FRENCH_CANADIAN instead */
#define TWLG_GER TWLG_GERMAN          /* use TWLG_GERMAN instead */
#define TWLG_ICE TWLG_ICELANDIC       /* use TWLG_ICELANDIC instead */
#define TWLG_ITN TWLG_ITALIAN         /* use TWLG_ITALIAN instead */
#define TWLG_NOR TWLG_NORWEGIAN       /* use TWLG_NORWEGIAN instead */
#define TWLG_POR TWLG_PORTUGUESE      /* use TWLG_PORTUGUESE instead */
#define TWLG_SPA TWLG_SPANISH         /* use TWLG_SPANISH instead */
#define TWLG_SWE TWLG_SWEDISH         /* use TWLG_SWEDISH instead */

/* ACAP_AUDIOFILEFORMAT values (AF_ means audio format).  Added 1.8 */
#define TWAF_WAV 0
#define TWAF_AIFF 1
#define TWAF_AU 3
#define TWAF_SND 4

/* DAT_SETUPFILEXFER2. Sets up DS to application data transfer via a file. Added
 * 1.9 */
typedef struct {
  TW_MEMREF FileName;     /* Pointer to file name text */
  TW_UINT16 FileNameType; /* TWTY_STR1024 or TWTY_UNI512 */
  TW_UINT16 Format;       /* Any TWFF_ constant */
  TW_INT16 VRefNum;       /* Used for Mac only  */
  TW_UINT32 parID;        /* Used for Mac only */
} TW_SETUPFILEXFER2, FAR *pTW_SETUPFILEXFER2;

/* SDH - 03/21/95 - TWUNK */
/* DAT_TWUNKIDENTITY. Provides DS identity and 'other' information necessary */
/*                    across thunk link. */
typedef struct {
  TW_IDENTITY identity; /* Identity of data source.                 */
  TW_STR255 dsPath;     /* Full path and file name of data source.  */
} TW_TWUNKIDENTITY, FAR *pTW_TWUNKIDENTITY;

/* SDH - 03/21/95 - TWUNK */
/* Provides DS_Entry parameters over thunk link. */
/*  SDH - 03/23/95 - WATCH                                                  */
/*  The thunker requires knowledge about size of data being passed in the   */
/*  lpData parameter to DS_Entry (which is not readily available due to     */
/*  type LPVOID.  Thus, we key off the DAT_ argument to determine the size. */
/*  This has a couple implications:                                         */
/*  1) Any additional DAT_ features require modifications to the thunk code */
/*     for thunker support.                                                 */
/*  2) Any applications which use the custom capabailites are not supported */
/*     under thunking since we have no way of knowing what size data (if    */
/*     any) is being passed.                                                */
typedef struct {
  TW_INT8 destFlag;     /* TRUE if dest is not NULL                 */
  TW_IDENTITY dest;     /* Identity of data source (if used)        */
  TW_INT32 dataGroup;   /* DSM_Entry dataGroup parameter            */
  TW_INT16 dataArgType; /* DSM_Entry dataArgType parameter          */
  TW_INT16 message;     /* DSM_Entry message parameter              */
  TW_INT32 pDataSize;   /* Size of pData (0 if NULL)                */
  //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
  /* pData parameter makes no sense in this   */
  /* structure, but data (if provided) will be*/
  /* appended in the data block.              */
} TW_TWUNKDSENTRYPARAMS, FAR *pTW_TWUNKDSENTRYPARAMS;

/* SDH - 03/21/95 - TWUNK */
/* Provides DS_Entry results over thunk link. */
typedef struct {
  TW_UINT16 returnCode;    /* Thunker DsEntry return code.             */
  TW_UINT16 conditionCode; /* Thunker DsEntry condition code.          */
  TW_INT32 pDataSize;      /* Size of pData (0 if NULL)                */
  //  TW_MEMREF   pData;      /* Based on implementation specifics, a     */
  /* pData parameter makes no sense in this   */
  /* structure, but data (if provided) will be*/
  /* appended in the data block.              */
} TW_TWUNKDSENTRYRETURN, FAR *pTW_TWUNKDSENTRYRETURN;

/* WJD - 950818 */
/* Added for 1.6 Specification */
/* TWAIN 1.6 CAP_SUPPORTEDCAPSEXT structure */
typedef struct {
  TW_UINT16 Cap;        /* Which CAP/ICAP info is relevant to */
  TW_UINT16 Properties; /* Messages this CAP/ICAP supports */
} TW_CAPEXT, FAR *pTW_CAPEXT;

/* DAT_SETUPAUDIOFILEXFER, information required to setup an audio file transfer
 */
typedef struct {
  TW_STR255 FileName; /* full path target file */
  TW_UINT16 Format;   /* one of TWAF_xxxx */
  TW_INT16 VRefNum;
} TW_SETUPAUDIOFILEXFER, FAR *pTW_SETUPAUDIOFILEXFER;

/****************************************************************************
 * Entry Points                                                             *
 ****************************************************************************/

/**********************************************************************
 * Function: DSM_Entry, the only entry point into the Data Source Manager.
 *
 * Parameters:
 *  pOrigin Identifies the source module of the message. This could
 *          identify an Application, a Source, or the Source Manager.
 *
 *  pDest   Identifies the destination module for the message.
 *          This could identify an application or a data source.
 *          If this is NULL, the message goes to the Source Manager.
 *
 *  DG      The Data Group.
 *          Example: DG_IMAGE.
 *
 *  DAT     The Data Attribute Type.
 *          Example: DAT_IMAGEMEMXFER.
 *
 *  MSG     The message.  Messages are interpreted by the destination module
 *          with respect to the Data Group and the Data Attribute Type.
 *          Example: MSG_GET.
 *
 *  pData   A pointer to the data structure or variable identified
 *          by the Data Attribute Type.
 *          Example: (TW_MEMREF)&ImageMemXfer
 *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
 *
 * Returns:
 *  ReturnCode
 *         Example: TWRC_SUCCESS.
 *
 ********************************************************************/

/* Don't mangle the name "DSM_Entry" if we're compiling in C++! */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#ifdef TWH_CMP_MSC

TW_UINT16 FAR PASCAL DSM_Entry(pTW_IDENTITY pOrigin, pTW_IDENTITY pDest,
                               TW_UINT32 DG, TW_UINT16 DAT, TW_UINT16 MSG,
                               TW_MEMREF pData);

typedef TW_UINT16(FAR PASCAL *DSMENTRYPROC)(pTW_IDENTITY pOrigin,
                                            pTW_IDENTITY pDest, TW_UINT32 DG,
                                            TW_UINT16 DAT, TW_UINT16 MSG,
                                            TW_MEMREF pData);

#else

FAR PASCAL TW_UINT16 DSM_Entry(pTW_IDENTITY pOrigin, pTW_IDENTITY pDest,
                               TW_UINT32 DG, TW_UINT16 DAT, TW_UINT16 MSG,
                               TW_MEMREF pData);

typedef TW_UINT16 (*DSMENTRYPROC)(pTW_IDENTITY pOrigin, pTW_IDENTITY pDest,
                                  TW_UINT32 DG, TW_UINT16 DAT, TW_UINT16 MSG,
                                  TW_MEMREF pData);

#endif /* TWH_CMP_MSC */

#ifdef __cplusplus
}
#endif /* cplusplus */

/**********************************************************************
 * Function: DS_Entry, the entry point provided by a Data Source.
 *
 * Parameters:
 *  pOrigin Identifies the source module of the message. This could
 *          identify an application or the Data Source Manager.
 *
 *  DG      The Data Group.
 *          Example: DG_IMAGE.
 *
 *  DAT     The Data Attribute Type.
 *          Example: DAT_IMAGEMEMXFER.
 *
 *  MSG     The message.  Messages are interpreted by the data source
 *          with respect to the Data Group and the Data Attribute Type.
 *          Example: MSG_GET.
 *
 *  pData   A pointer to the data structure or variable identified
 *          by the Data Attribute Type.
 *          Example: (TW_MEMREF)&ImageMemXfer
 *                   where ImageMemXfer is a TW_IMAGEMEMXFER structure.
 *
 * Returns:
 *  ReturnCode
 *          Example: TWRC_SUCCESS.
 *
 * Note:
 *  The DSPROC type is only used by an application when it calls
 *  a Data Source directly, bypassing the Data Source Manager.
 *
 ********************************************************************/
/* Don't mangle the name "DS_Entry" if we're compiling in C++! */
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */

#ifdef TWH_CMP_MSC

TW_UINT16 FAR PASCAL DS_Entry(pTW_IDENTITY pOrigin, TW_UINT32 DG, TW_UINT16 DAT,
                              TW_UINT16 MSG, TW_MEMREF pData);

typedef TW_UINT16(FAR PASCAL *DSENTRYPROC)(pTW_IDENTITY pOrigin, TW_UINT32 DG,
                                           TW_UINT16 DAT, TW_UINT16 MSG,
                                           TW_MEMREF pData);

#else

FAR PASCAL TW_UINT16 DS_Entry(pTW_IDENTITY pOrigin, TW_UINT32 DG, TW_UINT16 DAT,
                              TW_UINT16 MSG, TW_MEMREF pData);

typedef TW_UINT16 (*DSENTRYPROC)(pTW_IDENTITY pOrigin, TW_UINT32 DG,
                                 TW_UINT16 DAT, TW_UINT16 MSG, TW_MEMREF pData);

#endif /* TWH_CMP_MSC */

typedef TW_HANDLE(PASCAL *DSM_MEMALLOCATE)(TW_UINT32 _size);
typedef void(PASCAL *DSM_MEMFREE)(TW_HANDLE _handle);
typedef TW_MEMREF(PASCAL *DSM_MEMLOCK)(TW_HANDLE _handle);
typedef void(PASCAL *DSM_MEMUNLOCK)(TW_HANDLE _handle);

#ifdef __cplusplus
}
#endif /* __cplusplus */

/* DAT_ENTRYPOINT. returns essential entry points. */
typedef struct {
  TW_UINT32 Size;
  DSMENTRYPROC DSM_Entry;
  DSM_MEMALLOCATE DSM_MemAllocate;
  DSM_MEMFREE DSM_MemFree;
  DSM_MEMLOCK DSM_MemLock;
  DSM_MEMUNLOCK DSM_MemUnlock;
} TW_ENTRYPOINT, FAR *pTW_ENTRYPOINT;

/* Restore the previous packing alignment: this occurs after all structures are
 * defined */
#ifdef TWH_CMP_MSC
#pragma pack(pop, before_twain)
#elif defined(TWH_CMP_GNU)
#pragma pack(pop, before_twain)
#elif defined(TWH_CMP_BORLAND)
#pragma option a.
#elif defined(TWH_CMP_XCODE)
#if PRAGMA_STRUCT_ALIGN
#pragma options align = reset
#elif PRAGMA_STRUCT_PACKPUSH
#pragma pack(pop)
#elif PRAGMA_STRUCT_PACK
#pragma pack()
#endif
#endif

#endif /* TWAIN */
