tiffio.h

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/*
 * Copyright (c) 1988-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and
 * its documentation for any purpose is hereby granted without fee, provided
 * that (i) the above copyright notices and this permission notice appear in
 * all copies of the software and related documentation, and (ii) the names of
 * Sam Leffler and Silicon Graphics may not be used in any advertising or
 * publicity relating to the software without the specific, prior written
 * permission of Sam Leffler and Silicon Graphics.
 *
 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
 *
 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THIS SOFTWARE.
 */

#ifndef _TIFFIO_
#define _TIFFIO_

/*
 * TIFF I/O Library Definitions.
 */
#include "tiff.h"
#include "tiffvers.h"

/*
 * TIFF is defined as an incomplete type to hide the
 * library's internal data structures from clients.
 */
typedef struct tiff TIFF;

/*
 * The following typedefs define the intrinsic size of
 * data types used in the *exported* interfaces.  These
 * definitions depend on the proper definition of types
 * in tiff.h.  Note also that the varargs interface used
 * to pass tag types and values uses the types defined in
 * tiff.h directly.
 *
 * NB: ttag_t is unsigned int and not unsigned short because
 *     ANSI C requires that the type before the ellipsis be a
 *     promoted type (i.e. one of int, unsigned int, pointer,
 *     or double) and because we defined pseudo-tags that are
 *     outside the range of legal Aldus-assigned tags.
 * NB: tsize_t is signed and not unsigned because some functions
 *     return -1.
 * NB: toff_t is not off_t for many reasons; TIFFs max out at
 *     32-bit file offsets, and BigTIFF maxes out at 64-bit
 *     offsets being the most important, and to ensure use of
 *     a consistently unsigned type across architectures.
 *     Prior to libtiff 4.0, this was an unsigned 32 bit type.
 */
/*
 * this is the machine addressing size type, only it's signed, so make it
 * int32 on 32bit machines, int64 on 64bit machines
 */
typedef TIFF_SSIZE_T tmsize_t;
typedef uint64 toff_t;          /* file offset */
/* the following are deprecated and should be replaced by their defining
   counterparts */
typedef uint32 ttag_t;          /* directory tag */
typedef uint16 tdir_t;          /* directory index */
typedef uint16 tsample_t;       /* sample number */
typedef uint32 tstrile_t;       /* strip or tile number */
typedef tstrile_t tstrip_t;     /* strip number */
typedef tstrile_t ttile_t;      /* tile number */
typedef tmsize_t tsize_t;       /* i/o size in bytes */
typedef void* tdata_t;          /* image data ref */

#if !defined(__WIN32__) && (defined(_WIN32) || defined(WIN32))
#define __WIN32__
#endif

/*
 * On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c
 * or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c).
 *
 * By default tif_unix.c is assumed.
 */

#if defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
#  if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILEIO)
#    define AVOID_WIN32_FILEIO
#  endif
#endif

#if defined(USE_WIN32_FILEIO)
# define VC_EXTRALEAN
# include <windows.h>
# ifdef __WIN32__
DECLARE_HANDLE(thandle_t);     /* Win32 file handle */
# else
typedef HFILE thandle_t;       /* client data handle */
# endif /* __WIN32__ */
#else
typedef void* thandle_t;       /* client data handle */
#endif /* USE_WIN32_FILEIO */

/*
 * Flags to pass to TIFFPrintDirectory to control
 * printing of data structures that are potentially
 * very large.   Bit-or these flags to enable printing
 * multiple items.
 */
#define TIFFPRINT_NONE         0x0    /* no extra info */
#define TIFFPRINT_STRIPS       0x1    /* strips/tiles info */
#define TIFFPRINT_CURVES       0x2    /* color/gray response curves */
#define TIFFPRINT_COLORMAP     0x4    /* colormap */
#define TIFFPRINT_JPEGQTABLES  0x100  /* JPEG Q matrices */
#define TIFFPRINT_JPEGACTABLES 0x200  /* JPEG AC tables */
#define TIFFPRINT_JPEGDCTABLES 0x200  /* JPEG DC tables */

/* 
 * Colour conversion stuff
 */

/* reference white */
#define D65_X0 (95.0470F)
#define D65_Y0 (100.0F)
#define D65_Z0 (108.8827F)

#define D50_X0 (96.4250F)
#define D50_Y0 (100.0F)
#define D50_Z0 (82.4680F)

/* Structure for holding information about a display device. */

typedef unsigned char TIFFRGBValue;               /* 8-bit samples */

typedef struct {
    float d_mat[3][3];                        /* XYZ -> luminance matrix */
    float d_YCR;                              /* Light o/p for reference white */
    float d_YCG;
    float d_YCB;
    uint32 d_Vrwr;                            /* Pixel values for ref. white */
    uint32 d_Vrwg;
    uint32 d_Vrwb;
    float d_Y0R;                              /* Residual light for black pixel */
    float d_Y0G;
    float d_Y0B;
    float d_gammaR;                           /* Gamma values for the three guns */
    float d_gammaG;
    float d_gammaB;
} TIFFDisplay;

typedef struct {                                  /* YCbCr->RGB support */
    TIFFRGBValue* clamptab;                   /* range clamping table */
    int* Cr_r_tab;
    int* Cb_b_tab;
    int32* Cr_g_tab;
    int32* Cb_g_tab;
    int32* Y_tab;
} TIFFYCbCrToRGB;

typedef struct {                                  /* CIE Lab 1976->RGB support */
    int range;                                /* Size of conversion table */
#define CIELABTORGB_TABLE_RANGE 1500
    float rstep, gstep, bstep;
    float X0, Y0, Z0;                         /* Reference white point */
    TIFFDisplay display;
    float Yr2r[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yr to r */
    float Yg2g[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yg to g */
    float Yb2b[CIELABTORGB_TABLE_RANGE + 1];  /* Conversion of Yb to b */
} TIFFCIELabToRGB;

/*
 * RGBA-style image support.
 */
typedef struct _TIFFRGBAImage TIFFRGBAImage;
/*
 * The image reading and conversion routines invoke
 * ``put routines'' to copy/image/whatever tiles of
 * raw image data.  A default set of routines are 
 * provided to convert/copy raw image data to 8-bit
 * packed ABGR format rasters.  Applications can supply
 * alternate routines that unpack the data into a
 * different format or, for example, unpack the data
 * and draw the unpacked raster on the display.
 */
typedef void (*tileContigRoutine)
    (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
    unsigned char*);
typedef void (*tileSeparateRoutine)
    (TIFFRGBAImage*, uint32*, uint32, uint32, uint32, uint32, int32, int32,
    unsigned char*, unsigned char*, unsigned char*, unsigned char*);
/*
 * RGBA-reader state.
 */
struct _TIFFRGBAImage {
    TIFF* tif;                              /* image handle */
    int stoponerr;                          /* stop on read error */
    int isContig;                           /* data is packed/separate */
    int alpha;                              /* type of alpha data present */
    uint32 width;                           /* image width */
    uint32 height;                          /* image height */
    uint16 bitspersample;                   /* image bits/sample */
    uint16 samplesperpixel;                 /* image samples/pixel */
    uint16 orientation;                     /* image orientation */
    uint16 req_orientation;                 /* requested orientation */
    uint16 photometric;                     /* image photometric interp */
    uint16* redcmap;                        /* colormap palette */
    uint16* greencmap;
    uint16* bluecmap;
    /* get image data routine */
    int (*get)(TIFFRGBAImage*, uint32*, uint32, uint32);
    /* put decoded strip/tile */
    union {
        void (*any)(TIFFRGBAImage*);
        tileContigRoutine contig;
        tileSeparateRoutine separate;
    } put;
    TIFFRGBValue* Map;                      /* sample mapping array */
    uint32** BWmap;                         /* black&white map */
    uint32** PALmap;                        /* palette image map */
    TIFFYCbCrToRGB* ycbcr;                  /* YCbCr conversion state */
    TIFFCIELabToRGB* cielab;                /* CIE L*a*b conversion state */

    uint8* UaToAa;                          /* Unassociated alpha to associated alpha conversion LUT */
    uint8* Bitdepth16To8;                   /* LUT for conversion from 16bit to 8bit values */

    int row_offset;
    int col_offset;
};

/*
 * Macros for extracting components from the
 * packed ABGR form returned by TIFFReadRGBAImage.
 */
#define TIFFGetR(abgr) ((abgr) & 0xff)
#define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)
#define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)
#define TIFFGetA(abgr) (((abgr) >> 24) & 0xff)

/*
 * A CODEC is a software package that implements decoding,
 * encoding, or decoding+encoding of a compression algorithm.
 * The library provides a collection of builtin codecs.
 * More codecs may be registered through calls to the library
 * and/or the builtin implementations may be overridden.
 */
typedef int (*TIFFInitMethod)(TIFF*, int);
typedef struct {
    char* name;
    uint16 scheme;
    TIFFInitMethod init;
} TIFFCodec;

#include <stdio.h>
#include <stdarg.h>

/* share internal LogLuv conversion routines? */
#ifndef LOGLUV_PUBLIC
#define LOGLUV_PUBLIC 1
#endif

#if !defined(__GNUC__) && !defined(__attribute__)
#  define __attribute__(x) /*nothing*/
#endif

#if defined(c_plusplus) || defined(__cplusplus)
extern "C" {
#endif
typedef void (*TIFFErrorHandler)(const char*, const char*, va_list);
typedef void (*TIFFErrorHandlerExt)(thandle_t, const char*, const char*, va_list);
typedef tmsize_t (*TIFFReadWriteProc)(thandle_t, void*, tmsize_t);
typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);
typedef int (*TIFFCloseProc)(thandle_t);
typedef toff_t (*TIFFSizeProc)(thandle_t);
typedef int (*TIFFMapFileProc)(thandle_t, void** base, toff_t* size);
typedef void (*TIFFUnmapFileProc)(thandle_t, void* base, toff_t size);
typedef void (*TIFFExtendProc)(TIFF*);

extern const char* TIFFGetVersion(void);

extern const TIFFCodec* TIFFFindCODEC(uint16);
extern TIFFCodec* TIFFRegisterCODEC(uint16, const char*, TIFFInitMethod);
extern void TIFFUnRegisterCODEC(TIFFCodec*);
extern int TIFFIsCODECConfigured(uint16);
extern TIFFCodec* TIFFGetConfiguredCODECs(void);

/*
 * Auxiliary functions.
 */

extern void* _TIFFmalloc(tmsize_t s);
extern void* _TIFFcalloc(tmsize_t nmemb, tmsize_t siz);
extern void* _TIFFrealloc(void* p, tmsize_t s);
extern void _TIFFmemset(void* p, int v, tmsize_t c);
extern void _TIFFmemcpy(void* d, const void* s, tmsize_t c);
extern int _TIFFmemcmp(const void* p1, const void* p2, tmsize_t c);
extern void _TIFFfree(void* p);

/*
** Stuff, related to tag handling and creating custom tags.
*/
extern int TIFFGetTagListCount( TIFF * );
extern uint32 TIFFGetTagListEntry( TIFF *, int tag_index );
    
#define TIFF_ANY       TIFF_NOTYPE     /* for field descriptor searching */
#define TIFF_VARIABLE  -1              /* marker for variable length tags */
#define TIFF_SPP       -2              /* marker for SamplesPerPixel tags */
#define TIFF_VARIABLE2 -3              /* marker for uint32 var-length tags */

#define FIELD_CUSTOM    65

typedef struct _TIFFField TIFFField;
typedef struct _TIFFFieldArray TIFFFieldArray;

extern const TIFFField* TIFFFindField(TIFF *, uint32, TIFFDataType);
extern const TIFFField* TIFFFieldWithTag(TIFF*, uint32);
extern const TIFFField* TIFFFieldWithName(TIFF*, const char *);

extern uint32 TIFFFieldTag(const TIFFField*);
extern const char* TIFFFieldName(const TIFFField*);
extern TIFFDataType TIFFFieldDataType(const TIFFField*);
extern int TIFFFieldPassCount(const TIFFField*);
extern int TIFFFieldReadCount(const TIFFField*);
extern int TIFFFieldWriteCount(const TIFFField*);

typedef int (*TIFFVSetMethod)(TIFF*, uint32, va_list);
typedef int (*TIFFVGetMethod)(TIFF*, uint32, va_list);
typedef void (*TIFFPrintMethod)(TIFF*, FILE*, long);

typedef struct {
    TIFFVSetMethod vsetfield; /* tag set routine */
    TIFFVGetMethod vgetfield; /* tag get routine */
    TIFFPrintMethod printdir; /* directory print routine */
} TIFFTagMethods;

extern  TIFFTagMethods *TIFFAccessTagMethods(TIFF *);
extern  void *TIFFGetClientInfo(TIFF *, const char *);
extern  void TIFFSetClientInfo(TIFF *, void *, const char *);

extern void TIFFCleanup(TIFF* tif);
extern void TIFFClose(TIFF* tif);
extern int TIFFFlush(TIFF* tif);
extern int TIFFFlushData(TIFF* tif);
extern int TIFFGetField(TIFF* tif, uint32 tag, ...);
extern int TIFFVGetField(TIFF* tif, uint32 tag, va_list ap);
extern int TIFFGetFieldDefaulted(TIFF* tif, uint32 tag, ...);
extern int TIFFVGetFieldDefaulted(TIFF* tif, uint32 tag, va_list ap);
extern int TIFFReadDirectory(TIFF* tif);
extern int TIFFReadCustomDirectory(TIFF* tif, toff_t diroff, const TIFFFieldArray* infoarray);
extern int TIFFReadEXIFDirectory(TIFF* tif, toff_t diroff);
extern uint64 TIFFScanlineSize64(TIFF* tif);
extern tmsize_t TIFFScanlineSize(TIFF* tif);
extern uint64 TIFFRasterScanlineSize64(TIFF* tif);
extern tmsize_t TIFFRasterScanlineSize(TIFF* tif);
extern uint64 TIFFStripSize64(TIFF* tif);
extern tmsize_t TIFFStripSize(TIFF* tif);
extern uint64 TIFFRawStripSize64(TIFF* tif, uint32 strip);
extern tmsize_t TIFFRawStripSize(TIFF* tif, uint32 strip);
extern uint64 TIFFVStripSize64(TIFF* tif, uint32 nrows);
extern tmsize_t TIFFVStripSize(TIFF* tif, uint32 nrows);
extern uint64 TIFFTileRowSize64(TIFF* tif);
extern tmsize_t TIFFTileRowSize(TIFF* tif);
extern uint64 TIFFTileSize64(TIFF* tif);
extern tmsize_t TIFFTileSize(TIFF* tif);
extern uint64 TIFFVTileSize64(TIFF* tif, uint32 nrows);
extern tmsize_t TIFFVTileSize(TIFF* tif, uint32 nrows);
extern uint32 TIFFDefaultStripSize(TIFF* tif, uint32 request);
extern void TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
extern int TIFFFileno(TIFF*);
extern int TIFFSetFileno(TIFF*, int);
extern thandle_t TIFFClientdata(TIFF*);
extern thandle_t TIFFSetClientdata(TIFF*, thandle_t);
extern int TIFFGetMode(TIFF*);
extern int TIFFSetMode(TIFF*, int);
extern int TIFFIsTiled(TIFF*);
extern int TIFFIsByteSwapped(TIFF*);
extern int TIFFIsUpSampled(TIFF*);
extern int TIFFIsMSB2LSB(TIFF*);
extern int TIFFIsBigEndian(TIFF*);
extern TIFFReadWriteProc TIFFGetReadProc(TIFF*);
extern TIFFReadWriteProc TIFFGetWriteProc(TIFF*);
extern TIFFSeekProc TIFFGetSeekProc(TIFF*);                                                          
extern TIFFCloseProc TIFFGetCloseProc(TIFF*);
extern TIFFSizeProc TIFFGetSizeProc(TIFF*);
extern TIFFMapFileProc TIFFGetMapFileProc(TIFF*);
extern TIFFUnmapFileProc TIFFGetUnmapFileProc(TIFF*);
extern uint32 TIFFCurrentRow(TIFF*);
extern uint16 TIFFCurrentDirectory(TIFF*);
extern uint16 TIFFNumberOfDirectories(TIFF*);
extern uint64 TIFFCurrentDirOffset(TIFF*);
extern uint32 TIFFCurrentStrip(TIFF*);
extern uint32 TIFFCurrentTile(TIFF* tif);
extern int TIFFReadBufferSetup(TIFF* tif, void* bp, tmsize_t size);
extern int TIFFWriteBufferSetup(TIFF* tif, void* bp, tmsize_t size);  
extern int TIFFSetupStrips(TIFF *);
extern int TIFFWriteCheck(TIFF*, int, const char *);
extern void TIFFFreeDirectory(TIFF*);
extern int TIFFCreateDirectory(TIFF*);
extern int TIFFCreateCustomDirectory(TIFF*,const TIFFFieldArray*);
extern int TIFFCreateEXIFDirectory(TIFF*);
extern int TIFFLastDirectory(TIFF*);
extern int TIFFSetDirectory(TIFF*, uint16);
extern int TIFFSetSubDirectory(TIFF*, uint64);
extern int TIFFUnlinkDirectory(TIFF*, uint16);
extern int TIFFSetField(TIFF*, uint32, ...);
extern int TIFFVSetField(TIFF*, uint32, va_list);
extern int TIFFUnsetField(TIFF*, uint32);
extern int TIFFWriteDirectory(TIFF *);
extern int TIFFWriteCustomDirectory(TIFF *, uint64 *);
extern int TIFFCheckpointDirectory(TIFF *);
extern int TIFFRewriteDirectory(TIFF *);
extern int TIFFDeferStrileArrayWriting(TIFF *);
extern int TIFFForceStrileArrayWriting(TIFF* );

#if defined(c_plusplus) || defined(__cplusplus)
extern void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
extern int TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample = 0);
extern int TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample = 0);
extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int = 0);
extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*,
    int = ORIENTATION_BOTLEFT, int = 0);
#else
extern void TIFFPrintDirectory(TIFF*, FILE*, long);
extern int TIFFReadScanline(TIFF* tif, void* buf, uint32 row, uint16 sample);
extern int TIFFWriteScanline(TIFF* tif, void* buf, uint32 row, uint16 sample);
extern int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int);
extern int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*, int, int);
#endif

extern int TIFFReadRGBAStrip(TIFF*, uint32, uint32 * );
extern int TIFFReadRGBATile(TIFF*, uint32, uint32, uint32 * );
extern int TIFFReadRGBAStripExt(TIFF*, uint32, uint32 *, int stop_on_error );
extern int TIFFReadRGBATileExt(TIFF*, uint32, uint32, uint32 *, int stop_on_error );
extern int TIFFRGBAImageOK(TIFF*, char [1024]);
extern int TIFFRGBAImageBegin(TIFFRGBAImage*, TIFF*, int, char [1024]);
extern int TIFFRGBAImageGet(TIFFRGBAImage*, uint32*, uint32, uint32);
extern void TIFFRGBAImageEnd(TIFFRGBAImage*);
extern TIFF* TIFFOpen(const char*, const char*);
# ifdef __WIN32__
extern TIFF* TIFFOpenW(const wchar_t*, const char*);
# endif /* __WIN32__ */
extern TIFF* TIFFFdOpen(int, const char*, const char*);
extern TIFF* TIFFClientOpen(const char*, const char*,
        thandle_t,
        TIFFReadWriteProc, TIFFReadWriteProc,
        TIFFSeekProc, TIFFCloseProc,
        TIFFSizeProc,
        TIFFMapFileProc, TIFFUnmapFileProc);
extern const char* TIFFFileName(TIFF*);
extern const char* TIFFSetFileName(TIFF*, const char *);
extern void TIFFError(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
extern void TIFFErrorExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
extern void TIFFWarning(const char*, const char*, ...) __attribute__((__format__ (__printf__,2,3)));
extern void TIFFWarningExt(thandle_t, const char*, const char*, ...) __attribute__((__format__ (__printf__,3,4)));
extern TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
extern TIFFErrorHandlerExt TIFFSetErrorHandlerExt(TIFFErrorHandlerExt);
extern TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
extern TIFFErrorHandlerExt TIFFSetWarningHandlerExt(TIFFErrorHandlerExt);
extern TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
extern uint32 TIFFComputeTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s);
extern int TIFFCheckTile(TIFF* tif, uint32 x, uint32 y, uint32 z, uint16 s);
extern uint32 TIFFNumberOfTiles(TIFF*);
extern tmsize_t TIFFReadTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s);  
extern tmsize_t TIFFWriteTile(TIFF* tif, void* buf, uint32 x, uint32 y, uint32 z, uint16 s);
extern uint32 TIFFComputeStrip(TIFF*, uint32, uint16);
extern uint32 TIFFNumberOfStrips(TIFF*);
extern tmsize_t TIFFReadEncodedStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size);
extern tmsize_t TIFFReadRawStrip(TIFF* tif, uint32 strip, void* buf, tmsize_t size);  
extern tmsize_t TIFFReadEncodedTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);  
extern tmsize_t TIFFReadRawTile(TIFF* tif, uint32 tile, void* buf, tmsize_t size);  
extern int      TIFFReadFromUserBuffer(TIFF* tif, uint32 strile,
                                       void* inbuf, tmsize_t insize,
                                       void* outbuf, tmsize_t outsize);
extern tmsize_t TIFFWriteEncodedStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);
extern tmsize_t TIFFWriteRawStrip(TIFF* tif, uint32 strip, void* data, tmsize_t cc);  
extern tmsize_t TIFFWriteEncodedTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc);  
extern tmsize_t TIFFWriteRawTile(TIFF* tif, uint32 tile, void* data, tmsize_t cc);  
extern int TIFFDataWidth(TIFFDataType);    /* table of tag datatype widths */
extern void TIFFSetWriteOffset(TIFF* tif, toff_t off);
extern void TIFFSwabShort(uint16*);
extern void TIFFSwabLong(uint32*);
extern void TIFFSwabLong8(uint64*);
extern void TIFFSwabFloat(float*);
extern void TIFFSwabDouble(double*);
extern void TIFFSwabArrayOfShort(uint16* wp, tmsize_t n);
extern void TIFFSwabArrayOfTriples(uint8* tp, tmsize_t n);
extern void TIFFSwabArrayOfLong(uint32* lp, tmsize_t n);
extern void TIFFSwabArrayOfLong8(uint64* lp, tmsize_t n);
extern void TIFFSwabArrayOfFloat(float* fp, tmsize_t n);
extern void TIFFSwabArrayOfDouble(double* dp, tmsize_t n);
extern void TIFFReverseBits(uint8* cp, tmsize_t n);
extern const unsigned char* TIFFGetBitRevTable(int);

extern uint64 TIFFGetStrileOffset(TIFF *tif, uint32 strile);
extern uint64 TIFFGetStrileByteCount(TIFF *tif, uint32 strile);
extern uint64 TIFFGetStrileOffsetWithErr(TIFF *tif, uint32 strile, int *pbErr);
extern uint64 TIFFGetStrileByteCountWithErr(TIFF *tif, uint32 strile, int *pbErr);

#ifdef LOGLUV_PUBLIC
#define U_NEU       0.210526316
#define V_NEU       0.473684211
#define UVSCALE     410.
extern double LogL16toY(int);
extern double LogL10toY(int);
extern void XYZtoRGB24(float*, uint8*);
extern int uv_decode(double*, double*, int);
extern void LogLuv24toXYZ(uint32, float*);
extern void LogLuv32toXYZ(uint32, float*);
#if defined(c_plusplus) || defined(__cplusplus)
extern int LogL16fromY(double, int = SGILOGENCODE_NODITHER);
extern int LogL10fromY(double, int = SGILOGENCODE_NODITHER);
extern int uv_encode(double, double, int = SGILOGENCODE_NODITHER);
extern uint32 LogLuv24fromXYZ(float*, int = SGILOGENCODE_NODITHER);
extern uint32 LogLuv32fromXYZ(float*, int = SGILOGENCODE_NODITHER);
#else
extern int LogL16fromY(double, int);
extern int LogL10fromY(double, int);
extern int uv_encode(double, double, int);
extern uint32 LogLuv24fromXYZ(float*, int);
extern uint32 LogLuv32fromXYZ(float*, int);
#endif
#endif /* LOGLUV_PUBLIC */

extern int TIFFCIELabToRGBInit(TIFFCIELabToRGB*, const TIFFDisplay *, float*);
extern void TIFFCIELabToXYZ(TIFFCIELabToRGB *, uint32, int32, int32,
    float *, float *, float *);
extern void TIFFXYZToRGB(TIFFCIELabToRGB *, float, float, float,
    uint32 *, uint32 *, uint32 *);

extern int TIFFYCbCrToRGBInit(TIFFYCbCrToRGB*, float*, float*);
extern void TIFFYCbCrtoRGB(TIFFYCbCrToRGB *, uint32, int32, int32,
    uint32 *, uint32 *, uint32 *);

/****************************************************************************
 *               O B S O L E T E D    I N T E R F A C E S
 *
 * Don't use this stuff in your applications, it may be removed in the future
 * libtiff versions.
 ****************************************************************************/
typedef struct {
    ttag_t  field_tag;      /* field's tag */
    short   field_readcount;    /* read count/TIFF_VARIABLE/TIFF_SPP */
    short   field_writecount;   /* write count/TIFF_VARIABLE */
    TIFFDataType field_type;    /* type of associated data */
        unsigned short field_bit;   /* bit in fieldsset bit vector */
    unsigned char field_oktochange; /* if true, can change while writing */
    unsigned char field_passcount;  /* if true, pass dir count on set */
    char    *field_name;        /* ASCII name */
} TIFFFieldInfo;

extern int TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], uint32);
        
#if defined(c_plusplus) || defined(__cplusplus)
}
#endif

#endif /* _TIFFIO_ */

/* vim: set ts=8 sts=8 sw=8 noet: */
/*
 * Local Variables:
 * mode: c
 * c-basic-offset: 8
 * fill-column: 78
 * End:
 */