src/parsec/disk-image/parsec/parsec-benchmark/ext/splash2x/apps/volrend/src/libtiff/tiffioP.h - public/gem5-resources - Git at Google

 /* $Header: /cvs/bao-parsec/ext/splash2x/apps/volrend/src/libtiff/tiffioP.h,v 1.1.1.1 2012/03/29 17:22:43 uid42307 Exp $ */

 /*
  * Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
  * Copyright (c) 1991, 1992 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 _TIFFIOP_
 #define	_TIFFIOP_
 /*
  * ``Library-private'' definitions.
  */
 #include "tiffcompat.h"
 #include "tiff.h"

 /*
  * Internal format of a TIFF directory entry.
  */
 typedef	struct {
 	u_long	td_fieldsset[2];	/* bit vector of fields that are set */

 	u_long	td_imagewidth, td_imagelength, td_imagedepth;
 	u_long	td_tilewidth, td_tilelength, td_tiledepth;
 	u_short	td_subfiletype;
 	u_short	td_bitspersample;
 	u_short	td_sampleformat;
 	u_short	td_compression;
 	u_short	td_photometric;
 	u_short	td_threshholding;
 	u_short	td_fillorder;
 	u_short	td_orientation;
 	u_short	td_samplesperpixel;
 	u_short	td_predictor;
 	u_long	td_rowsperstrip;
 	u_long	td_minsamplevalue, td_maxsamplevalue;	/* XXX */
 	float	td_xresolution, td_yresolution;
 	u_short	td_resolutionunit;
 	u_short	td_planarconfig;
 	float	td_xposition, td_yposition;
 	u_long	td_group3options;
 	u_long	td_group4options;
 	u_short	td_pagenumber[2];
 	u_short	td_matteing;
 	u_short	td_cleanfaxdata;
 	u_short	td_badfaxrun;
 	u_long	td_badfaxlines;
 	u_short	*td_colormap[3];
 	u_short	td_halftonehints[2];
 	char	*td_documentname;
 	char	*td_artist;
 	char	*td_datetime;
 	char	*td_hostcomputer;
 	char	*td_imagedescription;
 	char	*td_make;
 	char	*td_model;
 	char	*td_software;
 	char	*td_pagename;
 	u_long	td_stripsperimage;
 	u_long	td_nstrips;		/* size of offset & bytecount arrays */
 	u_long	*td_stripoffset;
 	u_long	*td_stripbytecount;
 #ifdef YCBCR_SUPPORT
 	float	*td_ycbcrcoeffs;
 	u_short	td_ycbcrsubsampling[2];
 	u_short	td_ycbcrpositioning;
 #endif
 #ifdef JPEG_SUPPORT
 	u_short	td_jpegproc;
 	u_short	td_jpegrestartinterval;
 	u_char	**td_qtab;
 	u_char	**td_dctab;
 	u_char	**td_actab;
 #endif
 #ifdef COLORIMETRY_SUPPORT
 	float	*td_whitepoint;
 	float	*td_primarychromas;
 	float	*td_refblackwhite;
 	u_short	*td_transferfunction[4];
 #endif
 #ifdef CMYK_SUPPORT
 	u_short	td_inkset;
 	u_short	td_dotrange[2];
 	char	*td_inknames;
 	char	*td_targetprinter;
 #endif
 } TIFFDirectory;

 /*
  * Field flags used to indicate fields that have
  * been set in a directory, and to reference fields
  * when manipulating a directory.
  */
 /* multi-entry fields */
 #define	FIELD_IMAGEDIMENSIONS		0
 #define FIELD_TILEDIMENSIONS		1
 #define	FIELD_CELLDIMENSIONS		2		/* XXX */
 #define	FIELD_RESOLUTION		3
 #define	FIELD_POSITION			4
 /* single-entry fields */
 #define	FIELD_SUBFILETYPE		5
 #define	FIELD_BITSPERSAMPLE		6
 #define	FIELD_COMPRESSION		7
 #define	FIELD_PHOTOMETRIC		8
 #define	FIELD_THRESHHOLDING		9
 #define	FIELD_FILLORDER			10
 #define	FIELD_DOCUMENTNAME		11
 #define	FIELD_IMAGEDESCRIPTION		12
 #define	FIELD_MAKE			13
 #define	FIELD_MODEL			14
 #define	FIELD_ORIENTATION		15
 #define	FIELD_SAMPLESPERPIXEL		16
 #define	FIELD_ROWSPERSTRIP		17
 #define	FIELD_MINSAMPLEVALUE		18
 #define	FIELD_MAXSAMPLEVALUE		19
 #define	FIELD_PLANARCONFIG		20
 #define	FIELD_PAGENAME			21
 #define	FIELD_GROUP3OPTIONS		22
 #define	FIELD_GROUP4OPTIONS		23
 #define	FIELD_RESOLUTIONUNIT		24
 #define	FIELD_PAGENUMBER		25
 #define	FIELD_STRIPBYTECOUNTS		26
 #define	FIELD_STRIPOFFSETS		27
 #define	FIELD_COLORMAP			28
 #define FIELD_PREDICTOR			29
 #define FIELD_ARTIST			30
 #define FIELD_DATETIME			31
 #define FIELD_HOSTCOMPUTER		32
 #define FIELD_SOFTWARE			33
 #define	FIELD_MATTEING			34
 #define	FIELD_BADFAXLINES		35
 #define	FIELD_CLEANFAXDATA		36
 #define	FIELD_BADFAXRUN			37
 #define FIELD_SAMPLEFORMAT		38
 #define	FIELD_SMINSAMPLEVALUE		39
 #define	FIELD_SMAXSAMPLEVALUE		40
 #define FIELD_IMAGEDEPTH		41
 #define FIELD_TILEDEPTH			42
 #define	FIELD_HALFTONEHINTS		43
 #ifdef YCBCR_SUPPORT
 #define FIELD_YCBCRCOEFFICIENTS		44
 #define FIELD_YCBCRSUBSAMPLING		45
 #define FIELD_YCBCRPOSITIONING		46
 #endif
 #ifdef JPEG_SUPPORT
 #define FIELD_JPEGPROC			47
 #define FIELD_JPEGRESTARTINTERVAL	48
 #define FIELD_JPEGQTABLES		49
 #define FIELD_JPEGDCTABLES		50
 #define FIELD_JPEGACTABLES		51
 #endif
 #ifdef COLORIMETRY_SUPPORT
 #define	FIELD_REFBLACKWHITE		52
 #define	FIELD_WHITEPOINT		53
 #define	FIELD_PRIMARYCHROMAS		54
 #define	FIELD_TRANSFERFUNCTION		55
 #endif
 #ifdef CMYK_SUPPORT
 #define	FIELD_INKSET			56
 #define	FIELD_INKNAMES			57
 #define	FIELD_DOTRANGE			58
 #define	FIELD_TARGETPRINTER		59
 #endif
 #define	FIELD_LAST			59

 #define	TIFFExtractData(tif, type, v) \
     ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
         ((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] : \
 	(v) & (tif)->tif_typemask[type])
 #define	TIFFInsertData(tif, type, v) \
     ((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
         ((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] : \
 	(v) & (tif)->tif_typemask[type])

 typedef	struct {
 	u_short	field_tag;		/* field's tag */
 	short	field_readcount;	/* read count (-1 for unknown) */
 	short	field_writecount;	/* write count (-1 for unknown) */
 	TIFFDataType field_type;	/* type of associated data */
 	u_short	field_bit;		/* bit in fieldsset bit vector */
 	u_short	field_oktochange;	/* if true, can change while writing */
 	char	*field_name;		/* ASCII name */
 } TIFFFieldInfo;

 #define	FIELD_IGNORE	((u_short)-1)	/* tags processed but ignored */

 #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 */

 extern	const TIFFFieldInfo tiffFieldInfo[];/* table of field descriptors */
 extern	const int tiffDataWidth[];	/* table of tag datatype widths */

 #define BITn(n)				(((unsigned)1L)<<((n)&0x1f))
 #define BITFIELDn(tif, n)		((tif)->tif_dir.td_fieldsset[(n)/32])
 #define TIFFFieldSet(tif, field)	(BITFIELDn(tif, field) & BITn(field))
 #define TIFFSetFieldBit(tif, field)	(BITFIELDn(tif, field) |= BITn(field))
 #define TIFFClrFieldBit(tif, field)	(BITFIELDn(tif, field) &= ~BITn(field))

 #define	FieldSet(fields, f)		(fields[(f)/32] & BITn(f))
 #define	ResetFieldBit(fields, f)	(fields[(f)/32] &= ~BITn(f))

 struct tiff {
 	char	*tif_name;		/* name of open file */
 	short	tif_fd;			/* open file descriptor */
 	short	tif_mode;		/* open mode (O_*) */
 	char	tif_fillorder;		/* natural bit fill order for machine */
 	char	tif_options;		/* compression-specific options */
 	short	tif_flags;
 #define	TIFF_DIRTYHEADER	0x1	/* header must be written on close */
 #define	TIFF_DIRTYDIRECT	0x2	/* current directory must be written */
 #define	TIFF_BUFFERSETUP	0x4	/* data buffers setup */
 #define	TIFF_BEENWRITING	0x8	/* written 1+ scanlines to file */
 #define	TIFF_SWAB		0x10	/* byte swap file information */
 #define	TIFF_NOBITREV		0x20	/* inhibit bit reversal logic */
 #define	TIFF_MYBUFFER		0x40	/* my raw data buffer; free on close */
 #define	TIFF_ISTILED		0x80	/* file is tile, not strip- based */
 #define	TIFF_MAPPED		0x100	/* file is mapped into memory */
 #define	TIFF_POSTENCODE		0x200	/* need call to postencode routine */
 	long	tif_diroff;		/* file offset of current directory */
 	long	tif_nextdiroff;		/* file offset of following directory */
 	TIFFDirectory tif_dir;		/* internal rep of current directory */
 	TIFFHeader tif_header;		/* file's header block */
 	int const *tif_typeshift;	/* data type shift counts */
 	long const *tif_typemask;	/* data type masks */
 	long	tif_row;		/* current scanline */
 	int	tif_curdir;		/* current directory (index) */
 	int	tif_curstrip;		/* current strip for read/write */
 	long	tif_curoff;		/* current offset for read/write */
 /* tiling support */
 	long 	tif_col;		/* current column (offset by row too) */
 	int 	tif_curtile;		/* current tile for read/write */
 	long 	tif_tilesize;		/* # of bytes in a tile */
 /* compression scheme hooks */
 	int	(*tif_predecode)();	/* pre row/strip/tile decoding */
 	int	(*tif_preencode)();	/* pre row/strip/tile encoding */
 	int	(*tif_postencode)();	/* post row/strip/tile encoding */
 	int	(*tif_decoderow)();	/* scanline decoding routine */
 	int	(*tif_encoderow)();	/* scanline encoding routine */
 	int	(*tif_decodestrip)();	/* strip decoding routine */
 	int	(*tif_encodestrip)();	/* strip encoding routine */
 	int	(*tif_decodetile)();	/* tile decoding routine */
 	int	(*tif_encodetile)();	/* tile encoding routine */
 	int	(*tif_close)();		/* cleanup-on-close routine */
 	int	(*tif_seek)();		/* position within a strip routine */
 	int	(*tif_cleanup)();	/* routine called to cleanup state */
 	char	*tif_data;		/* compression scheme private data */
 /* input/output buffering */
 	int	tif_scanlinesize;	/* # of bytes in a scanline */
 	int	tif_scanlineskew;	/* scanline skew for reading strips */
 	char	*tif_rawdata;		/* raw data buffer */
 	long	tif_rawdatasize;	/* # of bytes in raw data buffer */
 	char	*tif_rawcp;		/* current spot in raw buffer */
 	long	tif_rawcc;		/* bytes unread from raw buffer */
 #ifdef MMAP_SUPPORT
 	char*	tif_base;		/* base of mapped file */
 	long	tif_size;		/* size of mapped file region (bytes) */
 #endif
 };

 #define	isTiled(tif)	(((tif)->tif_flags & TIFF_ISTILED) != 0)
 #ifdef MMAP_SUPPORT
 #define	isMapped(tif)	(((tif)->tif_flags & TIFF_MAPPED) != 0)
 #else
 #define	isMapped(tif)	0		/* force dead code */
 #endif

 /* generic option bit names */
 #define	TIFF_OPT0	0x1
 #define	TIFF_OPT1	0x2
 #define	TIFF_OPT2	0x4
 #define	TIFF_OPT3	0x8
 #define	TIFF_OPT4	0x10
 #define	TIFF_OPT5	0x20
 #define	TIFF_OPT6	0x40
 #define	TIFF_OPT7	0x80

 #include "tiffio.h"

 /* NB: the u_int casts are to silence certain ANSI-C compilers */
 #ifdef howmany
 #undef howmany
 #endif
 #define	howmany(x, y)	((((u_int)(x))+(((u_int)(y))-1))/((u_int)(y)))
 #ifdef roundup
 #undef roundup
 #endif
 #define	roundup(x, y)	(howmany(x,y)*((u_int)(y)))

 #if defined(c_plusplus) || defined(__cplusplus) || defined(__STDC__) || USE_PROTOTYPES
 #if defined(__cplusplus)
 extern "C" {
 #endif
 extern	TIFFFieldInfo const *TIFFFindFieldInfo(u_short, TIFFDataType);
 extern	TIFFFieldInfo const *TIFFFieldWithTag(u_short);
 extern	int _TIFFgetfield(TIFFDirectory*, int, ...);
 extern	int TIFFNoRowEncode(TIFF*, u_char*, int, u_int);
 extern	int TIFFNoStripEncode(TIFF*, u_char*, int, u_int);
 extern	int TIFFNoTileEncode(TIFF*, u_char*, int, u_int);
 extern	int TIFFNoRowDecode(TIFF*, u_char*, int, u_int);
 extern	int TIFFNoStripDecode(TIFF*, u_char*, int, u_int);
 extern	int TIFFNoTileDecode(TIFF*, u_char*, int, u_int);
 #if defined(__cplusplus)
 }
 #endif
 #else
 extern	TIFFFieldInfo const *TIFFFindFieldInfo();
 extern	TIFFFieldInfo const *TIFFFieldWithTag();
 extern	int _TIFFgetfield();
 extern	int TIFFNoRowEncode();
 extern	int TIFFNoStripEncode();
 extern	int TIFFNoTileEncode();
 extern	int TIFFNoRowDecode();
 extern	int TIFFNoStripDecode();
 extern	int TIFFNoTileDecode();
 #endif
 #endif /* _TIFFIOP_ */
	/* $Header: /cvs/bao-parsec/ext/splash2x/apps/volrend/src/libtiff/tiffioP.h,v 1.1.1.1 2012/03/29 17:22:43 uid42307 Exp $ */

	/*
	* Copyright (c) 1988, 1989, 1990, 1991, 1992 Sam Leffler
	* Copyright (c) 1991, 1992 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 _TIFFIOP_
	#define _TIFFIOP_
	/*
	* ``Library-private'' definitions.
	*/
	#include "tiffcompat.h"
	#include "tiff.h"

	/*
	* Internal format of a TIFF directory entry.
	*/
	typedef struct {
	u_long td_fieldsset[2]; /* bit vector of fields that are set */

	u_long td_imagewidth, td_imagelength, td_imagedepth;
	u_long td_tilewidth, td_tilelength, td_tiledepth;
	u_short td_subfiletype;
	u_short td_bitspersample;
	u_short td_sampleformat;
	u_short td_compression;
	u_short td_photometric;
	u_short td_threshholding;
	u_short td_fillorder;
	u_short td_orientation;
	u_short td_samplesperpixel;
	u_short td_predictor;
	u_long td_rowsperstrip;
	u_long td_minsamplevalue, td_maxsamplevalue; /* XXX */
	float td_xresolution, td_yresolution;
	u_short td_resolutionunit;
	u_short td_planarconfig;
	float td_xposition, td_yposition;
	u_long td_group3options;
	u_long td_group4options;
	u_short td_pagenumber[2];
	u_short td_matteing;
	u_short td_cleanfaxdata;
	u_short td_badfaxrun;
	u_long td_badfaxlines;
	u_short *td_colormap[3];
	u_short td_halftonehints[2];
	char *td_documentname;
	char *td_artist;
	char *td_datetime;
	char *td_hostcomputer;
	char *td_imagedescription;
	char *td_make;
	char *td_model;
	char *td_software;
	char *td_pagename;
	u_long td_stripsperimage;
	u_long td_nstrips; /* size of offset & bytecount arrays */
	u_long *td_stripoffset;
	u_long *td_stripbytecount;
	#ifdef YCBCR_SUPPORT
	float *td_ycbcrcoeffs;
	u_short td_ycbcrsubsampling[2];
	u_short td_ycbcrpositioning;
	#endif
	#ifdef JPEG_SUPPORT
	u_short td_jpegproc;
	u_short td_jpegrestartinterval;
	u_char **td_qtab;
	u_char **td_dctab;
	u_char **td_actab;
	#endif
	#ifdef COLORIMETRY_SUPPORT
	float *td_whitepoint;
	float *td_primarychromas;
	float *td_refblackwhite;
	u_short *td_transferfunction[4];
	#endif
	#ifdef CMYK_SUPPORT
	u_short td_inkset;
	u_short td_dotrange[2];
	char *td_inknames;
	char *td_targetprinter;
	#endif
	} TIFFDirectory;

	/*
	* Field flags used to indicate fields that have
	* been set in a directory, and to reference fields
	* when manipulating a directory.
	*/
	/* multi-entry fields */
	#define FIELD_IMAGEDIMENSIONS 0
	#define FIELD_TILEDIMENSIONS 1
	#define FIELD_CELLDIMENSIONS 2 /* XXX */
	#define FIELD_RESOLUTION 3
	#define FIELD_POSITION 4
	/* single-entry fields */
	#define FIELD_SUBFILETYPE 5
	#define FIELD_BITSPERSAMPLE 6
	#define FIELD_COMPRESSION 7
	#define FIELD_PHOTOMETRIC 8
	#define FIELD_THRESHHOLDING 9
	#define FIELD_FILLORDER 10
	#define FIELD_DOCUMENTNAME 11
	#define FIELD_IMAGEDESCRIPTION 12
	#define FIELD_MAKE 13
	#define FIELD_MODEL 14
	#define FIELD_ORIENTATION 15
	#define FIELD_SAMPLESPERPIXEL 16
	#define FIELD_ROWSPERSTRIP 17
	#define FIELD_MINSAMPLEVALUE 18
	#define FIELD_MAXSAMPLEVALUE 19
	#define FIELD_PLANARCONFIG 20
	#define FIELD_PAGENAME 21
	#define FIELD_GROUP3OPTIONS 22
	#define FIELD_GROUP4OPTIONS 23
	#define FIELD_RESOLUTIONUNIT 24
	#define FIELD_PAGENUMBER 25
	#define FIELD_STRIPBYTECOUNTS 26
	#define FIELD_STRIPOFFSETS 27
	#define FIELD_COLORMAP 28
	#define FIELD_PREDICTOR 29
	#define FIELD_ARTIST 30
	#define FIELD_DATETIME 31
	#define FIELD_HOSTCOMPUTER 32
	#define FIELD_SOFTWARE 33
	#define FIELD_MATTEING 34
	#define FIELD_BADFAXLINES 35
	#define FIELD_CLEANFAXDATA 36
	#define FIELD_BADFAXRUN 37
	#define FIELD_SAMPLEFORMAT 38
	#define FIELD_SMINSAMPLEVALUE 39
	#define FIELD_SMAXSAMPLEVALUE 40
	#define FIELD_IMAGEDEPTH 41
	#define FIELD_TILEDEPTH 42
	#define FIELD_HALFTONEHINTS 43
	#ifdef YCBCR_SUPPORT
	#define FIELD_YCBCRCOEFFICIENTS 44
	#define FIELD_YCBCRSUBSAMPLING 45
	#define FIELD_YCBCRPOSITIONING 46
	#endif
	#ifdef JPEG_SUPPORT
	#define FIELD_JPEGPROC 47
	#define FIELD_JPEGRESTARTINTERVAL 48
	#define FIELD_JPEGQTABLES 49
	#define FIELD_JPEGDCTABLES 50
	#define FIELD_JPEGACTABLES 51
	#endif
	#ifdef COLORIMETRY_SUPPORT
	#define FIELD_REFBLACKWHITE 52
	#define FIELD_WHITEPOINT 53
	#define FIELD_PRIMARYCHROMAS 54
	#define FIELD_TRANSFERFUNCTION 55
	#endif
	#ifdef CMYK_SUPPORT
	#define FIELD_INKSET 56
	#define FIELD_INKNAMES 57
	#define FIELD_DOTRANGE 58
	#define FIELD_TARGETPRINTER 59
	#endif
	#define FIELD_LAST 59

	#define TIFFExtractData(tif, type, v) \
	((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
	((v) >> (tif)->tif_typeshift[type]) & (tif)->tif_typemask[type] : \
	(v) & (tif)->tif_typemask[type])
	#define TIFFInsertData(tif, type, v) \
	((tif)->tif_header.tiff_magic == TIFF_BIGENDIAN ? \
	((v) & (tif)->tif_typemask[type]) << (tif)->tif_typeshift[type] : \
	(v) & (tif)->tif_typemask[type])

	typedef struct {
	u_short field_tag; /* field's tag */
	short field_readcount; /* read count (-1 for unknown) */
	short field_writecount; /* write count (-1 for unknown) */
	TIFFDataType field_type; /* type of associated data */
	u_short field_bit; /* bit in fieldsset bit vector */
	u_short field_oktochange; /* if true, can change while writing */
	char field_name; / ASCII name */
	} TIFFFieldInfo;

	#define FIELD_IGNORE ((u_short)-1) /* tags processed but ignored */

	#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 */

	extern const TIFFFieldInfo tiffFieldInfo[];/* table of field descriptors */
	extern const int tiffDataWidth[]; /* table of tag datatype widths */

	#define BITn(n) (((unsigned)1L)<<((n)&0x1f))
	#define BITFIELDn(tif, n) ((tif)->tif_dir.td_fieldsset[(n)/32])
	#define TIFFFieldSet(tif, field) (BITFIELDn(tif, field) & BITn(field))
	#define TIFFSetFieldBit(tif, field) (BITFIELDn(tif, field) \|= BITn(field))
	#define TIFFClrFieldBit(tif, field) (BITFIELDn(tif, field) &= ~BITn(field))

	#define FieldSet(fields, f) (fields[(f)/32] & BITn(f))
	#define ResetFieldBit(fields, f) (fields[(f)/32] &= ~BITn(f))

	struct tiff {
	char tif_name; / name of open file */
	short tif_fd; /* open file descriptor */
	short tif_mode; /* open mode (O_) /
	char tif_fillorder; /* natural bit fill order for machine */
	char tif_options; /* compression-specific options */
	short tif_flags;
	#define TIFF_DIRTYHEADER 0x1 /* header must be written on close */
	#define TIFF_DIRTYDIRECT 0x2 /* current directory must be written */
	#define TIFF_BUFFERSETUP 0x4 /* data buffers setup */
	#define TIFF_BEENWRITING 0x8 /* written 1+ scanlines to file */
	#define TIFF_SWAB 0x10 /* byte swap file information */
	#define TIFF_NOBITREV 0x20 /* inhibit bit reversal logic */
	#define TIFF_MYBUFFER 0x40 /* my raw data buffer; free on close */
	#define TIFF_ISTILED 0x80 /* file is tile, not strip- based */
	#define TIFF_MAPPED 0x100 /* file is mapped into memory */
	#define TIFF_POSTENCODE 0x200 /* need call to postencode routine */
	long tif_diroff; /* file offset of current directory */
	long tif_nextdiroff; /* file offset of following directory */
	TIFFDirectory tif_dir; /* internal rep of current directory */
	TIFFHeader tif_header; /* file's header block */
	int const tif_typeshift; / data type shift counts */
	long const tif_typemask; / data type masks */
	long tif_row; /* current scanline */
	int tif_curdir; /* current directory (index) */
	int tif_curstrip; /* current strip for read/write */
	long tif_curoff; /* current offset for read/write */
	/* tiling support */
	long tif_col; /* current column (offset by row too) */
	int tif_curtile; /* current tile for read/write */
	long tif_tilesize; /* # of bytes in a tile */
	/* compression scheme hooks */
	int (tif_predecode)(); / pre row/strip/tile decoding */
	int (tif_preencode)(); / pre row/strip/tile encoding */
	int (tif_postencode)(); / post row/strip/tile encoding */
	int (tif_decoderow)(); / scanline decoding routine */
	int (tif_encoderow)(); / scanline encoding routine */
	int (tif_decodestrip)(); / strip decoding routine */
	int (tif_encodestrip)(); / strip encoding routine */
	int (tif_decodetile)(); / tile decoding routine */
	int (tif_encodetile)(); / tile encoding routine */
	int (tif_close)(); / cleanup-on-close routine */
	int (tif_seek)(); / position within a strip routine */
	int (tif_cleanup)(); / routine called to cleanup state */
	char tif_data; / compression scheme private data */
	/* input/output buffering */
	int tif_scanlinesize; /* # of bytes in a scanline */
	int tif_scanlineskew; /* scanline skew for reading strips */
	char tif_rawdata; / raw data buffer */
	long tif_rawdatasize; /* # of bytes in raw data buffer */
	char tif_rawcp; / current spot in raw buffer */
	long tif_rawcc; /* bytes unread from raw buffer */
	#ifdef MMAP_SUPPORT
	char* tif_base; /* base of mapped file */
	long tif_size; /* size of mapped file region (bytes) */
	#endif
	};

	#define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
	#ifdef MMAP_SUPPORT
	#define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
	#else
	#define isMapped(tif) 0 /* force dead code */
	#endif

	/* generic option bit names */
	#define TIFF_OPT0 0x1
	#define TIFF_OPT1 0x2
	#define TIFF_OPT2 0x4
	#define TIFF_OPT3 0x8
	#define TIFF_OPT4 0x10
	#define TIFF_OPT5 0x20
	#define TIFF_OPT6 0x40
	#define TIFF_OPT7 0x80

	#include "tiffio.h"

	/* NB: the u_int casts are to silence certain ANSI-C compilers */
	#ifdef howmany
	#undef howmany
	#endif
	#define howmany(x, y) ((((u_int)(x))+(((u_int)(y))-1))/((u_int)(y)))
	#ifdef roundup
	#undef roundup
	#endif
	#define roundup(x, y) (howmany(x,y)*((u_int)(y)))

	#if defined(c_plusplus) \|\| defined(__cplusplus) \|\| defined(__STDC__) \|\| USE_PROTOTYPES
	#if defined(__cplusplus)
	extern "C" {
	#endif
	extern TIFFFieldInfo const *TIFFFindFieldInfo(u_short, TIFFDataType);
	extern TIFFFieldInfo const *TIFFFieldWithTag(u_short);
	extern int _TIFFgetfield(TIFFDirectory*, int, ...);
	extern int TIFFNoRowEncode(TIFF, u_char, int, u_int);
	extern int TIFFNoStripEncode(TIFF, u_char, int, u_int);
	extern int TIFFNoTileEncode(TIFF, u_char, int, u_int);
	extern int TIFFNoRowDecode(TIFF, u_char, int, u_int);
	extern int TIFFNoStripDecode(TIFF, u_char, int, u_int);
	extern int TIFFNoTileDecode(TIFF, u_char, int, u_int);
	#if defined(__cplusplus)
	}
	#endif
	#else
	extern TIFFFieldInfo const *TIFFFindFieldInfo();
	extern TIFFFieldInfo const *TIFFFieldWithTag();
	extern int _TIFFgetfield();
	extern int TIFFNoRowEncode();
	extern int TIFFNoStripEncode();
	extern int TIFFNoTileEncode();
	extern int TIFFNoRowDecode();
	extern int TIFFNoStripDecode();
	extern int TIFFNoTileDecode();
	#endif
	#endif /* _TIFFIOP_ */