[wxWidgets.git] / src / tiff / tiffio.h

/* $Header$ */

/*
 * 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_win32.c is assumed on windows if not using the cygwin
 * environment.
 */

#if defined(_WINDOWS) || defined(__WIN32__) || defined(_Windows)
#  if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILIO)
#    define USE_WIN32_FILEIO
#  endif
#endif

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

#ifndef NULL
#define	NULL	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;

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 *);

/*
 * 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(__cplusplus)
extern "C" {
#endif
typedef	void (*TIFFErrorHandler)(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	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);

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	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 TIFFGetMode(TIFF*);
extern	int TIFFIsTiled(TIFF*);
extern	int TIFFIsByteSwapped(TIFF*);
extern	int TIFFIsUpSampled(TIFF*);
extern	int TIFFIsMSB2LSB(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  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*);
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	void TIFFError(const char*, const char*, ...);
extern	void TIFFWarning(const char*, const char*, ...);
extern	TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
extern	TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
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 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 */

/*
** New stuff going public in 3.6.x.
*/
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* TIFFFieldWithTag(TIFF*, ttag_t);

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 * );
    
#if defined(__cplusplus)
}
#endif
#endif /* _TIFFIO_ */
Commit	Line	Data
b47c832e RR	1	/* $Header$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
00cb87b4	7	* Permission to use, copy, modify, distribute, and sell this software and
b47c832e RR	8	* its documentation for any purpose is hereby granted without fee, provided
	9	* that (i) the above copyright notices and this permission notice appear in
	10	* all copies of the software and related documentation, and (ii) the names of
	11	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	12	* publicity relating to the software without the specific, prior written
	13	* permission of Sam Leffler and Silicon Graphics.
00cb87b4 VZ	14	*
	15	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	16	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	17	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	18	*
b47c832e RR	19	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	20	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	21	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
00cb87b4 VZ	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
00cb87b4 VZ	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
b47c832e RR	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	#ifndef _TIFFIO_
	28	#define _TIFFIO_
	29
	30	/*
	31	* TIFF I/O Library Definitions.
	32	*/
	33	#include "tiff.h"
00cb87b4	34	#include "tiffvers.h"
b47c832e RR	35
	36	/*
	37	* TIFF is defined as an incomplete type to hide the
	38	* library's internal data structures from clients.
	39	*/
	40	typedef struct tiff TIFF;
	41
	42	/*
	43	* The following typedefs define the intrinsic size of
	44	* data types used in the exported interfaces. These
	45	* definitions depend on the proper definition of types
	46	* in tiff.h. Note also that the varargs interface used
	47	* to pass tag types and values uses the types defined in
	48	* tiff.h directly.
	49	*
	50	* NB: ttag_t is unsigned int and not unsigned short because
	51	* ANSI C requires that the type before the ellipsis be a
	52	* promoted type (i.e. one of int, unsigned int, pointer,
	53	* or double) and because we defined pseudo-tags that are
	54	* outside the range of legal Aldus-assigned tags.
	55	* NB: tsize_t is int32 and not uint32 because some functions
	56	* return -1.
	57	* NB: toff_t is not off_t for many reasons; TIFFs max out at
00cb87b4 VZ	58	* 32-bit file offsets being the most important, and to ensure
00cb87b4 VZ	59	* that it is unsigned, rather than signed.
b47c832e RR	60	*/
	61	typedef uint32 ttag_t; /* directory tag */
	62	typedef uint16 tdir_t; /* directory index */
	63	typedef uint16 tsample_t; /* sample number */
	64	typedef uint32 tstrip_t; /* strip number */
	65	typedef uint32 ttile_t; /* tile number */
	66	typedef int32 tsize_t; /* i/o size in bytes */
	67	typedef void* tdata_t; /* image data ref */
00cb87b4	68	typedef uint32 toff_t; /* file offset */
b47c832e RR	69
	70	#if !defined(__WIN32__) && (defined(_WIN32) \|\| defined(WIN32))
	71	#define __WIN32__
	72	#endif
00cb87b4 VZ	73
	74	/*
	75	* On windows you should define USE_WIN32_FILEIO if you are using tif_win32.c
	76	* or AVOID_WIN32_FILEIO if you are using something else (like tif_unix.c).
	77	*
	78	* By default tif_win32.c is assumed on windows if not using the cygwin
	79	* environment.
	80	*/
	81
b47c832e	82	#if defined(_WINDOWS) \|\| defined(__WIN32__) \|\| defined(_Windows)
00cb87b4 VZ	83	# if !defined(__CYGWIN) && !defined(AVOID_WIN32_FILEIO) && !defined(USE_WIN32_FILIO)
	84	# define USE_WIN32_FILEIO
	85	# endif
	86	#endif
	87
	88	#if defined(USE_WIN32_FILEIO)
b47c832e RR	89	#include <windows.h>
	90	#ifdef __WIN32__
	91	DECLARE_HANDLE(thandle_t); /* Win32 file handle */
	92	#else
	93	typedef HFILE thandle_t; /* client data handle */
	94	#endif
	95	#else
	96	typedef void* thandle_t; /* client data handle */
	97	#endif
	98
	99	#ifndef NULL
	100	#define NULL 0
	101	#endif
	102
	103	/*
	104	* Flags to pass to TIFFPrintDirectory to control
	105	* printing of data structures that are potentially
	106	* very large. Bit-or these flags to enable printing
	107	* multiple items.
	108	*/
	109	#define TIFFPRINT_NONE 0x0 /* no extra info */
	110	#define TIFFPRINT_STRIPS 0x1 /* strips/tiles info */
	111	#define TIFFPRINT_CURVES 0x2 /* color/gray response curves */
	112	#define TIFFPRINT_COLORMAP 0x4 /* colormap */
	113	#define TIFFPRINT_JPEGQTABLES 0x100 /* JPEG Q matrices */
	114	#define TIFFPRINT_JPEGACTABLES 0x200 /* JPEG AC tables */
	115	#define TIFFPRINT_JPEGDCTABLES 0x200 /* JPEG DC tables */
	116
00cb87b4 VZ	117	/*
	118	* Colour conversion stuff
	119	*/
	120
	121	/* reference white */
	122	#define D65_X0 (95.0470F)
	123	#define D65_Y0 (100.0F)
	124	#define D65_Z0 (108.8827F)
	125
	126	#define D50_X0 (96.4250F)
	127	#define D50_Y0 (100.0F)
	128	#define D50_Z0 (82.4680F)
	129
	130	/* Structure for holding information about a display device. */
	131
	132	typedef unsigned char TIFFRGBValue; /* 8-bit samples */
	133
	134	typedef struct {
	135	float d_mat[3][3]; /* XYZ -> luminance matrix */
	136	float d_YCR; /* Light o/p for reference white */
	137	float d_YCG;
	138	float d_YCB;
	139	uint32 d_Vrwr; /* Pixel values for ref. white */
	140	uint32 d_Vrwg;
	141	uint32 d_Vrwb;
	142	float d_Y0R; /* Residual light for black pixel */
	143	float d_Y0G;
	144	float d_Y0B;
	145	float d_gammaR; /* Gamma values for the three guns */
	146	float d_gammaG;
	147	float d_gammaB;
	148	} TIFFDisplay;
	149
	150	typedef struct { /* YCbCr->RGB support */
	151	TIFFRGBValue* clamptab; /* range clamping table */
	152	int* Cr_r_tab;
	153	int* Cb_b_tab;
	154	int32* Cr_g_tab;
	155	int32* Cb_g_tab;
	156	int32* Y_tab;
	157	} TIFFYCbCrToRGB;
	158
	159	typedef struct { /* CIE Lab 1976->RGB support */
	160	int range; /* Size of conversion table */
	161	#define CIELABTORGB_TABLE_RANGE 1500
	162	float rstep, gstep, bstep;
	163	float X0, Y0, Z0; /* Reference white point */
	164	TIFFDisplay display;
	165	float Yr2r[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yr to r */
	166	float Yg2g[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yg to g */
	167	float Yb2b[CIELABTORGB_TABLE_RANGE + 1]; /* Conversion of Yb to b */
	168	} TIFFCIELabToRGB;
	169
	170	extern int TIFFCIELabToRGBInit(TIFFCIELabToRGB, TIFFDisplay , float*);
	171	extern void TIFFCIELabToXYZ(TIFFCIELabToRGB *, uint32, int32, int32,
	172	float , float , float *);
	173	extern void TIFFXYZToRGB(TIFFCIELabToRGB *, float, float, float,
	174	uint32 , uint32 , uint32 *);
	175
	176	extern int TIFFYCbCrToRGBInit(TIFFYCbCrToRGB, float, float*);
	177	extern void TIFFYCbCrtoRGB(TIFFYCbCrToRGB *, uint32, int32, int32,
	178	uint32 , uint32 , uint32 *);
	179
b47c832e RR	180	/*
	181	* RGBA-style image support.
	182	*/
b47c832e RR	183	typedef struct _TIFFRGBAImage TIFFRGBAImage;
	184	/*
	185	* The image reading and conversion routines invoke
	186	* ``put routines'' to copy/image/whatever tiles of
00cb87b4	187	* raw image data. A default set of routines are
b47c832e RR	188	* provided to convert/copy raw image data to 8-bit
	189	* packed ABGR format rasters. Applications can supply
	190	* alternate routines that unpack the data into a
	191	* different format or, for example, unpack the data
	192	* and draw the unpacked raster on the display.
	193	*/
00cb87b4	194	typedef void (*tileContigRoutine)
b47c832e RR	195	(TIFFRGBAImage, uint32, uint32, uint32, uint32, uint32, int32, int32,
b47c832e RR	196	unsigned char*);
00cb87b4	197	typedef void (*tileSeparateRoutine)
b47c832e RR	198	(TIFFRGBAImage, uint32, uint32, uint32, uint32, uint32, int32, int32,
	199	unsigned char, unsigned char, unsigned char, unsigned char);
	200	/*
	201	* RGBA-reader state.
	202	*/
b47c832e RR	203	struct _TIFFRGBAImage {
	204	TIFF* tif; /* image handle */
	205	int stoponerr; /* stop on read error */
	206	int isContig; /* data is packed/separate */
	207	int alpha; /* type of alpha data present */
	208	uint32 width; /* image width */
	209	uint32 height; /* image height */
	210	uint16 bitspersample; /* image bits/sample */
	211	uint16 samplesperpixel; /* image samples/pixel */
	212	uint16 orientation; /* image orientation */
00cb87b4	213	uint16 req_orientation; /* requested orientation */
b47c832e RR	214	uint16 photometric; /* image photometric interp */
	215	uint16* redcmap; /* colormap pallete */
	216	uint16* greencmap;
	217	uint16* bluecmap;
	218	/* get image data routine */
00cb87b4	219	int (get)(TIFFRGBAImage, uint32*, uint32, uint32);
b47c832e RR	220	union {
	221	void (any)(TIFFRGBAImage);
	222	tileContigRoutine contig;
	223	tileSeparateRoutine separate;
	224	} put; /* put decoded strip/tile */
	225	TIFFRGBValue* Map; /* sample mapping array */
	226	uint32** BWmap; /* black&white map */
	227	uint32** PALmap; /* palette image map */
	228	TIFFYCbCrToRGB* ycbcr; /* YCbCr conversion state */
00cb87b4	229	TIFFCIELabToRGB* cielab; /* CIE Lab conversion state */
b47c832e RR	230
	231	int row_offset;
	232	int col_offset;
	233	};
	234
	235	/*
	236	* Macros for extracting components from the
	237	* packed ABGR form returned by TIFFReadRGBAImage.
	238	*/
	239	#define TIFFGetR(abgr) ((abgr) & 0xff)
	240	#define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)
	241	#define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)
	242	#define TIFFGetA(abgr) (((abgr) >> 24) & 0xff)
	243
	244	/*
	245	* A CODEC is a software package that implements decoding,
	246	* encoding, or decoding+encoding of a compression algorithm.
	247	* The library provides a collection of builtin codecs.
	248	* More codecs may be registered through calls to the library
	249	* and/or the builtin implementations may be overridden.
	250	*/
00cb87b4	251	typedef int (TIFFInitMethod)(TIFF, int);
b47c832e RR	252	typedef struct {
	253	char* name;
	254	uint16 scheme;
	255	TIFFInitMethod init;
	256	} TIFFCodec;
	257
	258	#include <stdio.h>
	259	#include <stdarg.h>
	260
00cb87b4 VZ	261	/* share internal LogLuv conversion routines? */
	262	#ifndef LOGLUV_PUBLIC
	263	#define LOGLUV_PUBLIC 1
	264	#endif
	265
b47c832e RR	266	#if defined(__cplusplus)
	267	extern "C" {
	268	#endif
00cb87b4 VZ	269	typedef void (TIFFErrorHandler)(const char, const char*, va_list);
	270	typedef tsize_t (*TIFFReadWriteProc)(thandle_t, tdata_t, tsize_t);
	271	typedef toff_t (*TIFFSeekProc)(thandle_t, toff_t, int);
	272	typedef int (*TIFFCloseProc)(thandle_t);
	273	typedef toff_t (*TIFFSizeProc)(thandle_t);
	274	typedef int (TIFFMapFileProc)(thandle_t, tdata_t, toff_t*);
	275	typedef void (*TIFFUnmapFileProc)(thandle_t, tdata_t, toff_t);
	276	typedef void (TIFFExtendProc)(TIFF);
b47c832e RR	277
	278	extern const char* TIFFGetVersion(void);
	279
	280	extern const TIFFCodec* TIFFFindCODEC(uint16);
	281	extern TIFFCodec* TIFFRegisterCODEC(uint16, const char*, TIFFInitMethod);
	282	extern void TIFFUnRegisterCODEC(TIFFCodec*);
00cb87b4	283	extern int TIFFIsCODECConfigured(uint16);
b47c832e RR	284
	285	extern tdata_t _TIFFmalloc(tsize_t);
	286	extern tdata_t _TIFFrealloc(tdata_t, tsize_t);
	287	extern void _TIFFmemset(tdata_t, int, tsize_t);
	288	extern void _TIFFmemcpy(tdata_t, const tdata_t, tsize_t);
	289	extern int _TIFFmemcmp(const tdata_t, const tdata_t, tsize_t);
	290	extern void _TIFFfree(tdata_t);
	291
	292	extern void TIFFClose(TIFF*);
	293	extern int TIFFFlush(TIFF*);
	294	extern int TIFFFlushData(TIFF*);
	295	extern int TIFFGetField(TIFF*, ttag_t, ...);
	296	extern int TIFFVGetField(TIFF*, ttag_t, va_list);
	297	extern int TIFFGetFieldDefaulted(TIFF*, ttag_t, ...);
	298	extern int TIFFVGetFieldDefaulted(TIFF*, ttag_t, va_list);
	299	extern int TIFFReadDirectory(TIFF*);
	300	extern tsize_t TIFFScanlineSize(TIFF*);
	301	extern tsize_t TIFFRasterScanlineSize(TIFF*);
	302	extern tsize_t TIFFStripSize(TIFF*);
00cb87b4	303	extern tsize_t TIFFRawStripSize(TIFF*, tstrip_t);
b47c832e RR	304	extern tsize_t TIFFVStripSize(TIFF*, uint32);
	305	extern tsize_t TIFFTileRowSize(TIFF*);
	306	extern tsize_t TIFFTileSize(TIFF*);
	307	extern tsize_t TIFFVTileSize(TIFF*, uint32);
	308	extern uint32 TIFFDefaultStripSize(TIFF*, uint32);
	309	extern void TIFFDefaultTileSize(TIFF, uint32, uint32*);
	310	extern int TIFFFileno(TIFF*);
	311	extern int TIFFGetMode(TIFF*);
	312	extern int TIFFIsTiled(TIFF*);
	313	extern int TIFFIsByteSwapped(TIFF*);
	314	extern int TIFFIsUpSampled(TIFF*);
	315	extern int TIFFIsMSB2LSB(TIFF*);
	316	extern uint32 TIFFCurrentRow(TIFF*);
	317	extern tdir_t TIFFCurrentDirectory(TIFF*);
	318	extern tdir_t TIFFNumberOfDirectories(TIFF*);
	319	extern uint32 TIFFCurrentDirOffset(TIFF*);
	320	extern tstrip_t TIFFCurrentStrip(TIFF*);
	321	extern ttile_t TIFFCurrentTile(TIFF*);
	322	extern int TIFFReadBufferSetup(TIFF*, tdata_t, tsize_t);
	323	extern int TIFFWriteBufferSetup(TIFF*, tdata_t, tsize_t);
00cb87b4 VZ	324	extern int TIFFSetupStrips(TIFF *);
	325	extern int TIFFWriteCheck(TIFF, int, const char );
	326	extern int TIFFCreateDirectory(TIFF*);
b47c832e RR	327	extern int TIFFLastDirectory(TIFF*);
	328	extern int TIFFSetDirectory(TIFF*, tdir_t);
	329	extern int TIFFSetSubDirectory(TIFF*, uint32);
	330	extern int TIFFUnlinkDirectory(TIFF*, tdir_t);
	331	extern int TIFFSetField(TIFF*, ttag_t, ...);
	332	extern int TIFFVSetField(TIFF*, ttag_t, va_list);
	333	extern int TIFFWriteDirectory(TIFF *);
00cb87b4 VZ	334	extern int TIFFCheckpointDirectory(TIFF *);
00cb87b4 VZ	335	extern int TIFFRewriteDirectory(TIFF *);
b47c832e RR	336	extern int TIFFReassignTagToIgnore(enum TIFFIgnoreSense, int);
	337
	338	#if defined(c_plusplus) \|\| defined(__cplusplus)
	339	extern void TIFFPrintDirectory(TIFF, FILE, long = 0);
	340	extern int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
	341	extern int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t = 0);
	342	extern int TIFFReadRGBAImage(TIFF, uint32, uint32, uint32, int = 0);
00cb87b4 VZ	343	extern int TIFFReadRGBAImageOriented(TIFF, uint32, uint32, uint32,
00cb87b4 VZ	344	int = ORIENTATION_BOTLEFT, int = 0);
b47c832e RR	345	#else
	346	extern void TIFFPrintDirectory(TIFF, FILE, long);
	347	extern int TIFFReadScanline(TIFF*, tdata_t, uint32, tsample_t);
	348	extern int TIFFWriteScanline(TIFF*, tdata_t, uint32, tsample_t);
	349	extern int TIFFReadRGBAImage(TIFF, uint32, uint32, uint32, int);
00cb87b4	350	extern int TIFFReadRGBAImageOriented(TIFF, uint32, uint32, uint32, int, int);
b47c832e RR	351	#endif
	352
	353	extern int TIFFReadRGBAStrip(TIFF, tstrip_t, uint32 );
	354	extern int TIFFReadRGBATile(TIFF, uint32, uint32, uint32 );
	355	extern int TIFFRGBAImageOK(TIFF*, char [1024]);
	356	extern int TIFFRGBAImageBegin(TIFFRGBAImage, TIFF, int, char [1024]);
	357	extern int TIFFRGBAImageGet(TIFFRGBAImage, uint32, uint32, uint32);
	358	extern void TIFFRGBAImageEnd(TIFFRGBAImage*);
	359	extern TIFF* TIFFOpen(const char, const char);
	360	extern TIFF* TIFFFdOpen(int, const char, const char);
	361	extern TIFF* TIFFClientOpen(const char, const char,
	362	thandle_t,
	363	TIFFReadWriteProc, TIFFReadWriteProc,
	364	TIFFSeekProc, TIFFCloseProc,
	365	TIFFSizeProc,
	366	TIFFMapFileProc, TIFFUnmapFileProc);
	367	extern const char* TIFFFileName(TIFF*);
	368	extern void TIFFError(const char, const char, ...);
	369	extern void TIFFWarning(const char, const char, ...);
	370	extern TIFFErrorHandler TIFFSetErrorHandler(TIFFErrorHandler);
	371	extern TIFFErrorHandler TIFFSetWarningHandler(TIFFErrorHandler);
	372	extern TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc);
	373	extern ttile_t TIFFComputeTile(TIFF*, uint32, uint32, uint32, tsample_t);
	374	extern int TIFFCheckTile(TIFF*, uint32, uint32, uint32, tsample_t);
	375	extern ttile_t TIFFNumberOfTiles(TIFF*);
	376	extern tsize_t TIFFReadTile(TIFF*,
	377	tdata_t, uint32, uint32, uint32, tsample_t);
	378	extern tsize_t TIFFWriteTile(TIFF*,
	379	tdata_t, uint32, uint32, uint32, tsample_t);
	380	extern tstrip_t TIFFComputeStrip(TIFF*, uint32, tsample_t);
	381	extern tstrip_t TIFFNumberOfStrips(TIFF*);
	382	extern tsize_t TIFFReadEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
	383	extern tsize_t TIFFReadRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
	384	extern tsize_t TIFFReadEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
	385	extern tsize_t TIFFReadRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
	386	extern tsize_t TIFFWriteEncodedStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
	387	extern tsize_t TIFFWriteRawStrip(TIFF*, tstrip_t, tdata_t, tsize_t);
	388	extern tsize_t TIFFWriteEncodedTile(TIFF*, ttile_t, tdata_t, tsize_t);
	389	extern tsize_t TIFFWriteRawTile(TIFF*, ttile_t, tdata_t, tsize_t);
00cb87b4	390	extern int TIFFDataWidth(TIFFDataType); /* table of tag datatype widths */
b47c832e RR	391	extern void TIFFSetWriteOffset(TIFF*, toff_t);
	392	extern void TIFFSwabShort(uint16*);
	393	extern void TIFFSwabLong(uint32*);
	394	extern void TIFFSwabDouble(double*);
	395	extern void TIFFSwabArrayOfShort(uint16*, unsigned long);
	396	extern void TIFFSwabArrayOfLong(uint32*, unsigned long);
	397	extern void TIFFSwabArrayOfDouble(double*, unsigned long);
	398	extern void TIFFReverseBits(unsigned char *, unsigned long);
	399	extern const unsigned char* TIFFGetBitRevTable(int);
00cb87b4 VZ	400
	401	#ifdef LOGLUV_PUBLIC
	402	#define U_NEU 0.210526316
	403	#define V_NEU 0.473684211
	404	#define UVSCALE 410.
	405	extern double LogL16toY(int);
	406	extern double LogL10toY(int);
	407	extern void XYZtoRGB24(float, uint8);
	408	extern int uv_decode(double, double, int);
	409	extern void LogLuv24toXYZ(uint32, float*);
	410	extern void LogLuv32toXYZ(uint32, float*);
	411	#if defined(c_plusplus) \|\| defined(__cplusplus)
	412	extern int LogL16fromY(double, int = SGILOGENCODE_NODITHER);
	413	extern int LogL10fromY(double, int = SGILOGENCODE_NODITHER);
	414	extern int uv_encode(double, double, int = SGILOGENCODE_NODITHER);
	415	extern uint32 LogLuv24fromXYZ(float*, int = SGILOGENCODE_NODITHER);
	416	extern uint32 LogLuv32fromXYZ(float*, int = SGILOGENCODE_NODITHER);
	417	#else
	418	extern int LogL16fromY(double, int);
	419	extern int LogL10fromY(double, int);
	420	extern int uv_encode(double, double, int);
	421	extern uint32 LogLuv24fromXYZ(float*, int);
	422	extern uint32 LogLuv32fromXYZ(float*, int);
	423	#endif
	424	#endif /* LOGLUV_PUBLIC */
	425
	426	/*
	427	** New stuff going public in 3.6.x.
	428	*/
	429	extern int TIFFGetTagListCount( TIFF * );
	430	extern ttag_t TIFFGetTagListEntry( TIFF *, int tag_index );
	431
	432	#define TIFF_ANY TIFF_NOTYPE /* for field descriptor searching */
	433	#define TIFF_VARIABLE -1 /* marker for variable length tags */
	434	#define TIFF_SPP -2 /* marker for SamplesPerPixel tags */
	435	#define TIFF_VARIABLE2 -3 /* marker for uint32 var-length tags */
	436
	437	#define FIELD_CUSTOM 65
	438
	439	typedef struct {
	440	ttag_t field_tag; /* field's tag */
	441	short field_readcount; /* read count/TIFF_VARIABLE/TIFF_SPP */
	442	short field_writecount; /* write count/TIFF_VARIABLE */
	443	TIFFDataType field_type; /* type of associated data */
	444	unsigned short field_bit; /* bit in fieldsset bit vector */
	445	unsigned char field_oktochange; /* if true, can change while writing */
	446	unsigned char field_passcount; /* if true, pass dir count on set */
	447	char field_name; / ASCII name */
	448	} TIFFFieldInfo;
	449
	450	typedef struct _TIFFTagValue {
	451	const TIFFFieldInfo *info;
	452	int count;
	453	void *value;
	454	} TIFFTagValue;
	455
	456	extern void TIFFMergeFieldInfo(TIFF*, const TIFFFieldInfo[], int);
	457	extern const TIFFFieldInfo* TIFFFindFieldInfo(TIFF*, ttag_t, TIFFDataType);
	458	extern const TIFFFieldInfo* TIFFFieldWithTag(TIFF*, ttag_t);
	459
	460	typedef int (TIFFVSetMethod)(TIFF, ttag_t, va_list);
	461	typedef int (TIFFVGetMethod)(TIFF, ttag_t, va_list);
	462	typedef void (TIFFPrintMethod)(TIFF, FILE*, long);
	463
464	typedef struct {
465	TIFFVSetMethod vsetfield; /* tag set routine */
466	TIFFVGetMethod vgetfield; /* tag get routine */
467	TIFFPrintMethod printdir; /* directory print routine */
468	} TIFFTagMethods;
469
470	extern TIFFTagMethods TIFFAccessTagMethods( TIFF );
471	extern void TIFFGetClientInfo( TIFF , const char * );
472	extern void TIFFSetClientInfo( TIFF , void , const char * );
473
b47c832e RR	474	#if defined(__cplusplus)
	475	}
	476	#endif
	477	#endif /* _TIFFIO_ */