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tiffio.h

/* $Id: tiffio.h,v 1.50 2006/03/21 16:37:51 dron Exp $ */

/*
 * 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 int32 and not uint32 because some functions
 *     return -1.
 * NB: toff_t is not off_t for many reasons; TIFFs max out at
 *     32-bit file offsets being the most important, and to ensure
 *     that it is unsigned, rather than signed.
 */
typedef     uint32 ttag_t;          /* directory tag */
typedef     uint16 tdir_t;          /* directory index */
typedef     uint16 tsample_t; /* sample number */
typedef     uint32 tstrip_t;  /* strip number */
typedef uint32 ttile_t;       /* tile number */
typedef     int32 tsize_t;          /* i/o size in bytes */
typedef     void* tdata_t;          /* image data ref */
typedef     uint32 toff_t;          /* file offset */

#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 */

#ifndef NULL
# define NULL     (void *)0
#endif

/*
 * 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 pallete */
      uint16*     greencmap;
      uint16*     bluecmap;
                                    /* get image data routine */
      int   (*get)(TIFFRGBAImage*, uint32*, uint32, uint32);
      union {
          void (*any)(TIFFRGBAImage*);
          tileContigRoutine   contig;
          tileSeparateRoutine separate;
      } put;                              /* put decoded strip/tile */
      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 */

        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(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     tsize_t (*TIFFReadWriteProc)(thandle_t, tdata_t, tsize_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, tdata_t*, toff_t*);
typedef     void (*TIFFUnmapFileProc)(thandle_t, tdata_t, toff_t);
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      tdata_t _TIFFmalloc(tsize_t);
extern      tdata_t _TIFFrealloc(tdata_t, tsize_t);
extern      void _TIFFmemset(tdata_t, int, tsize_t);
extern      void _TIFFmemcpy(tdata_t, const tdata_t, tsize_t);
extern      int _TIFFmemcmp(const tdata_t, const tdata_t, tsize_t);
extern      void _TIFFfree(tdata_t);

/*
** Stuff, related to tag handling and creating custom tags.
*/
extern  int  TIFFGetTagListCount( TIFF * );
extern  ttag_t 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 {
      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;

typedef struct _TIFFTagValue {
    const TIFFFieldInfo  *info;
    int             count;
    void           *value;
} TIFFTagValue;

extern      void TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], int);
extern      const TIFFFieldInfo* TIFFFindFieldInfo(TIFF*, ttag_t, TIFFDataType);
extern  const TIFFFieldInfo* TIFFFindFieldInfoByName(TIFF* , const char *,
                                         TIFFDataType);
extern      const TIFFFieldInfo* TIFFFieldWithTag(TIFF*, ttag_t);
extern      const TIFFFieldInfo* TIFFFieldWithName(TIFF*, const char *);

typedef     int (*TIFFVSetMethod)(TIFF*, ttag_t, va_list);
typedef     int (*TIFFVGetMethod)(TIFF*, ttag_t, 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*);
extern      void TIFFClose(TIFF*);
extern      int TIFFFlush(TIFF*);
extern      int TIFFFlushData(TIFF*);
extern      int TIFFGetField(TIFF*, ttag_t, ...);
extern      int TIFFVGetField(TIFF*, ttag_t, va_list);
extern      int TIFFGetFieldDefaulted(TIFF*, ttag_t, ...);
extern      int TIFFVGetFieldDefaulted(TIFF*, ttag_t, va_list);
extern      int TIFFReadDirectory(TIFF*);
extern      int TIFFReadCustomDirectory(TIFF*, toff_t, const TIFFFieldInfo[],
                            size_t);
extern      int TIFFReadEXIFDirectory(TIFF*, toff_t);
extern      tsize_t TIFFScanlineSize(TIFF*);
extern      tsize_t TIFFRasterScanlineSize(TIFF*);
extern      tsize_t TIFFStripSize(TIFF*);
extern      tsize_t TIFFRawStripSize(TIFF*, tstrip_t);
extern      tsize_t TIFFVStripSize(TIFF*, uint32);
extern      tsize_t TIFFTileRowSize(TIFF*);
extern      tsize_t TIFFTileSize(TIFF*);
extern      tsize_t TIFFVTileSize(TIFF*, uint32);
extern      uint32 TIFFDefaultStripSize(TIFF*, uint32);
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      tdir_t TIFFCurrentDirectory(TIFF*);
extern      tdir_t TIFFNumberOfDirectories(TIFF*);
extern      uint32 TIFFCurrentDirOffset(TIFF*);
extern      tstrip_t TIFFCurrentStrip(TIFF*);
extern      ttile_t TIFFCurrentTile(TIFF*);
extern      int TIFFReadBufferSetup(TIFF*, tdata_t, tsize_t);
extern      int TIFFWriteBufferSetup(TIFF*, tdata_t, tsize_t);
extern      int TIFFSetupStrips(TIFF *);
extern  int TIFFWriteCheck(TIFF*, int, const char *);
extern      void TIFFFreeDirectory(TIFF*);
extern  int TIFFCreateDirectory(TIFF*);
extern      int TIFFLastDirectory(TIFF*);
extern      int TIFFSetDirectory(TIFF*, tdir_t);
extern      int TIFFSetSubDirectory(TIFF*, uint32);
extern      int TIFFUnlinkDirectory(TIFF*, tdir_t);
extern      int TIFFSetField(TIFF*, ttag_t, ...);
extern      int TIFFVSetField(TIFF*, ttag_t, va_list);
extern      int TIFFWriteDirectory(TIFF *);
extern      int TIFFCheckpointDirectory(TIFF *);
extern      int TIFFRewriteDirectory(TIFF *);
extern      int TIFFReassignTagToIgnore(enum TIFFIgnoreSense, int);

#if defined(c_plusplus) || defined(__cplusplus)
extern      void TIFFPrintDirectory(TIFF*, FILE*, long = 0);
extern      int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
extern      int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t = 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*, tdata_t, uint32, tsample_t);
extern      int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t);
extern      int TIFFReadRGBAImage(TIFF*, uint32, uint32, uint32*, int);
extern      int TIFFReadRGBAImageOriented(TIFF*, uint32, uint32, uint32*, int, int);
#endif

extern      int TIFFReadRGBAStrip(TIFF*, tstrip_t, uint32 * );
extern      int TIFFReadRGBATile(TIFF*, uint32, uint32, uint32 * );
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*, ...);
extern      void TIFFErrorExt(thandle_t, const char*, const char*, ...);
extern      void TIFFWarning(const char*, const char*, ...);
extern      void TIFFWarningExt(thandle_t, const char*, const char*, ...);
extern      TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
extern      TIFFErrorHandlerExt TIFFSetErrorHandlerExt(TIFFErrorHandlerExt);
extern      TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
extern      TIFFErrorHandlerExt TIFFSetWarningHandlerExt(TIFFErrorHandlerExt);
extern      TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
extern      ttile_t TIFFComputeTile(TIFF*, uint32, uint32, uint32, tsample_t);
extern      int TIFFCheckTile(TIFF*, uint32, uint32, uint32, tsample_t);
extern      ttile_t TIFFNumberOfTiles(TIFF*);
extern      tsize_t TIFFReadTile(TIFF*,
          tdata_t, uint32, uint32, uint32, tsample_t);
extern      tsize_t TIFFWriteTile(TIFF*,
          tdata_t, uint32, uint32, uint32, tsample_t);
extern      tstrip_t TIFFComputeStrip(TIFF*, uint32, tsample_t);
extern      tstrip_t TIFFNumberOfStrips(TIFF*);
extern      tsize_t TIFFReadEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
extern      tsize_t TIFFReadRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
extern      tsize_t TIFFReadEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
extern      tsize_t TIFFReadRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
extern      tsize_t TIFFWriteEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
extern      tsize_t TIFFWriteRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
extern      tsize_t TIFFWriteEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
extern      tsize_t TIFFWriteRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
extern      int TIFFDataWidth(TIFFDataType);    /* table of tag datatype widths */
extern      void TIFFSetWriteOffset(TIFF*, toff_t);
extern      void TIFFSwabShort(uint16*);
extern      void TIFFSwabLong(uint32*);
extern      void TIFFSwabDouble(double*);
extern      void TIFFSwabArrayOfShort(uint16*, unsigned long);
extern      void TIFFSwabArrayOfTriples(uint8*, unsigned long);
extern      void TIFFSwabArrayOfLong(uint32*, unsigned long);
extern      void TIFFSwabArrayOfDouble(double*, unsigned long);
extern      void TIFFReverseBits(unsigned char *, unsigned long);
extern      const unsigned char* TIFFGetBitRevTable(int);

#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*, 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 *);

#if defined(c_plusplus) || defined(__cplusplus)
}
#endif

#endif /* _TIFFIO_ */

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