[wxWidgets.git] / src / tiff / libtiff / tiffiop.h

/* $Id$ */

/*
 * 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 _TIFFIOP_
#define	_TIFFIOP_
/*
 * ``Library-private'' definitions.
 */

#ifdef _MSC_VER
# include "tif_config.h.vc"
#else
# include "tif_config.h"
#endif

#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif

#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif

#ifdef HAVE_STRING_H
# include <string.h>
#endif

#ifdef HAVE_ASSERT_H
# include <assert.h>
#else
# define assert(x) 
#endif

#ifdef HAVE_SEARCH_H
# include <search.h>
#else
extern void *lfind(const void *, const void *, size_t *, size_t,
		   int (*)(const void *, const void *));
#endif

#include "tiffio.h"
#include "tif_dir.h"

#ifndef STRIP_SIZE_DEFAULT
# define STRIP_SIZE_DEFAULT 8192
#endif

#define    streq(a,b)      (strcmp(a,b) == 0)

#ifndef TRUE
#define	TRUE	1
#define	FALSE	0
#endif

typedef struct client_info {
    struct client_info *next;
    void      *data;
    char      *name;
} TIFFClientInfoLink;

/*
 * Typedefs for ``method pointers'' used internally.
 */
typedef	unsigned char tidataval_t;	/* internal image data value type */
typedef	tidataval_t* tidata_t;		/* reference to internal image data */

typedef	void (*TIFFVoidMethod)(TIFF*);
typedef	int (*TIFFBoolMethod)(TIFF*);
typedef	int (*TIFFPreMethod)(TIFF*, tsample_t);
typedef	int (*TIFFCodeMethod)(TIFF*, tidata_t, tsize_t, tsample_t);
typedef	int (*TIFFSeekMethod)(TIFF*, uint32);
typedef	void (*TIFFPostMethod)(TIFF*, tidata_t, tsize_t);
typedef	uint32 (*TIFFStripMethod)(TIFF*, uint32);
typedef	void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);

struct tiff {
	char*		tif_name;	/* name of open file */
	int		tif_fd;		/* open file descriptor */
	int		tif_mode;	/* open mode (O_*) */
	uint32		tif_flags;
#define	TIFF_FILLORDER		0x0003	/* natural bit fill order for machine */
#define	TIFF_DIRTYHEADER	0x0004	/* header must be written on close */
#define	TIFF_DIRTYDIRECT	0x0008	/* current directory must be written */
#define	TIFF_BUFFERSETUP	0x0010	/* data buffers setup */
#define	TIFF_CODERSETUP		0x0020	/* encoder/decoder setup done */
#define	TIFF_BEENWRITING	0x0040	/* written 1+ scanlines to file */
#define	TIFF_SWAB		0x0080	/* byte swap file information */
#define	TIFF_NOBITREV		0x0100	/* inhibit bit reversal logic */
#define	TIFF_MYBUFFER		0x0200	/* my raw data buffer; free on close */
#define	TIFF_ISTILED		0x0400	/* file is tile, not strip- based */
#define	TIFF_MAPPED		0x0800	/* file is mapped into memory */
#define	TIFF_POSTENCODE		0x1000	/* need call to postencode routine */
#define	TIFF_INSUBIFD		0x2000	/* currently writing a subifd */
#define	TIFF_UPSAMPLED		0x4000	/* library is doing data up-sampling */ 
#define	TIFF_STRIPCHOP		0x8000	/* enable strip chopping support */
#define	TIFF_HEADERONLY		0x10000	/* read header only, do not process */
					/* the first directory */
	toff_t		tif_diroff;	/* file offset of current directory */
	toff_t		tif_nextdiroff;	/* file offset of following directory */
	toff_t*		tif_dirlist;	/* list of offsets to already seen */
					/* directories to prevent IFD looping */
	uint16		tif_dirnumber;  /* number of already seen directories */
	TIFFDirectory	tif_dir;	/* internal rep of current directory */
	TIFFHeader	tif_header;	/* file's header block */
	const int*	tif_typeshift;	/* data type shift counts */
	const long*	tif_typemask;	/* data type masks */
	uint32		tif_row;	/* current scanline */
	tdir_t		tif_curdir;	/* current directory (index) */
	tstrip_t	tif_curstrip;	/* current strip for read/write */
	toff_t		tif_curoff;	/* current offset for read/write */
	toff_t		tif_dataoff;	/* current offset for writing dir */
/* SubIFD support */
	uint16		tif_nsubifd;	/* remaining subifds to write */
	toff_t		tif_subifdoff;	/* offset for patching SubIFD link */
/* tiling support */
	uint32 		tif_col;	/* current column (offset by row too) */
	ttile_t		tif_curtile;	/* current tile for read/write */
	tsize_t		tif_tilesize;	/* # of bytes in a tile */
/* compression scheme hooks */
	int		tif_decodestatus;
	TIFFBoolMethod	tif_setupdecode;/* called once before predecode */
	TIFFPreMethod	tif_predecode;	/* pre- row/strip/tile decoding */
	TIFFBoolMethod	tif_setupencode;/* called once before preencode */
	int		tif_encodestatus;
	TIFFPreMethod	tif_preencode;	/* pre- row/strip/tile encoding */
	TIFFBoolMethod	tif_postencode;	/* post- row/strip/tile encoding */
	TIFFCodeMethod	tif_decoderow;	/* scanline decoding routine */
	TIFFCodeMethod	tif_encoderow;	/* scanline encoding routine */
	TIFFCodeMethod	tif_decodestrip;/* strip decoding routine */
	TIFFCodeMethod	tif_encodestrip;/* strip encoding routine */
	TIFFCodeMethod	tif_decodetile;	/* tile decoding routine */
	TIFFCodeMethod	tif_encodetile;	/* tile encoding routine */
	TIFFVoidMethod	tif_close;	/* cleanup-on-close routine */
	TIFFSeekMethod	tif_seek;	/* position within a strip routine */
	TIFFVoidMethod	tif_cleanup;	/* cleanup state routine */
	TIFFStripMethod	tif_defstripsize;/* calculate/constrain strip size */
	TIFFTileMethod	tif_deftilesize;/* calculate/constrain tile size */
	tidata_t	tif_data;	/* compression scheme private data */
/* input/output buffering */
	tsize_t		tif_scanlinesize;/* # of bytes in a scanline */
	tsize_t		tif_scanlineskew;/* scanline skew for reading strips */
	tidata_t	tif_rawdata;	/* raw data buffer */
	tsize_t		tif_rawdatasize;/* # of bytes in raw data buffer */
	tidata_t	tif_rawcp;	/* current spot in raw buffer */
	tsize_t		tif_rawcc;	/* bytes unread from raw buffer */
/* memory-mapped file support */
	tidata_t	tif_base;	/* base of mapped file */
	toff_t		tif_size;	/* size of mapped file region (bytes) */
	TIFFMapFileProc	tif_mapproc;	/* map file method */
	TIFFUnmapFileProc tif_unmapproc;/* unmap file method */
/* input/output callback methods */
	thandle_t	tif_clientdata;	/* callback parameter */
	TIFFReadWriteProc tif_readproc;	/* read method */
	TIFFReadWriteProc tif_writeproc;/* write method */
	TIFFSeekProc	tif_seekproc;	/* lseek method */
	TIFFCloseProc	tif_closeproc;	/* close method */
	TIFFSizeProc	tif_sizeproc;	/* filesize method */
/* post-decoding support */
	TIFFPostMethod	tif_postdecode;	/* post decoding routine */
/* tag support */
	TIFFFieldInfo**	tif_fieldinfo;	/* sorted table of registered tags */
	size_t		tif_nfields;	/* # entries in registered tag table */
	const TIFFFieldInfo *tif_foundfield;/* cached pointer to already found tag */
        TIFFTagMethods  tif_tagmethods; /* tag get/set/print routines */
        TIFFClientInfoLink *tif_clientinfo; /* extra client information. */
};

#define	isPseudoTag(t)	(t > 0xffff)	/* is tag value normal or pseudo */

#define	isTiled(tif)	(((tif)->tif_flags & TIFF_ISTILED) != 0)
#define	isMapped(tif)	(((tif)->tif_flags & TIFF_MAPPED) != 0)
#define	isFillOrder(tif, o)	(((tif)->tif_flags & (o)) != 0)
#define	isUpSampled(tif)	(((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
#define	TIFFReadFile(tif, buf, size) \
	((*(tif)->tif_readproc)((tif)->tif_clientdata,buf,size))
#define	TIFFWriteFile(tif, buf, size) \
	((*(tif)->tif_writeproc)((tif)->tif_clientdata,buf,size))
#define	TIFFSeekFile(tif, off, whence) \
	((*(tif)->tif_seekproc)((tif)->tif_clientdata,(toff_t)(off),whence))
#define	TIFFCloseFile(tif) \
	((*(tif)->tif_closeproc)((tif)->tif_clientdata))
#define	TIFFGetFileSize(tif) \
	((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
#define	TIFFMapFileContents(tif, paddr, psize) \
	((*(tif)->tif_mapproc)((tif)->tif_clientdata,paddr,psize))
#define	TIFFUnmapFileContents(tif, addr, size) \
	((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))

/*
 * Default Read/Seek/Write definitions.
 */
#ifndef ReadOK
#define	ReadOK(tif, buf, size) \
	(TIFFReadFile(tif, (tdata_t) buf, (tsize_t)(size)) == (tsize_t)(size))
#endif
#ifndef SeekOK
#define	SeekOK(tif, off) \
	(TIFFSeekFile(tif, (toff_t) off, SEEK_SET) == (toff_t) off)
#endif
#ifndef WriteOK
#define	WriteOK(tif, buf, size) \
	(TIFFWriteFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
#endif

/* NB: the uint32 casts are to silence certain ANSI-C compilers */
#define TIFFhowmany(x, y) ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y)))
#define TIFFhowmany8(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
#define	TIFFroundup(x, y) (TIFFhowmany(x,y)*(y))

#define TIFFmax(A,B) ((A)>(B)?(A):(B))
#define TIFFmin(A,B) ((A)<(B)?(A):(B))

#define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))

#if defined(__cplusplus)
extern "C" {
#endif
extern	int _TIFFgetMode(const char*, const char*);
extern	int _TIFFNoRowEncode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	int _TIFFNoStripEncode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	int _TIFFNoTileEncode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	int _TIFFNoRowDecode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	int _TIFFNoStripDecode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	int _TIFFNoTileDecode(TIFF*, tidata_t, tsize_t, tsample_t);
extern	void _TIFFNoPostDecode(TIFF*, tidata_t, tsize_t);
extern  int  _TIFFNoPreCode (TIFF*, tsample_t); 
extern	int _TIFFNoSeek(TIFF*, uint32);
extern	void _TIFFSwab16BitData(TIFF*, tidata_t, tsize_t);
extern	void _TIFFSwab24BitData(TIFF*, tidata_t, tsize_t);
extern	void _TIFFSwab32BitData(TIFF*, tidata_t, tsize_t);
extern	void _TIFFSwab64BitData(TIFF*, tidata_t, tsize_t);
extern	int TIFFFlushData1(TIFF*);
extern	int TIFFDefaultDirectory(TIFF*);
extern	void _TIFFSetDefaultCompressionState(TIFF*);
extern	int TIFFSetCompressionScheme(TIFF*, int);
extern	int TIFFSetDefaultCompressionState(TIFF*);
extern	uint32 _TIFFDefaultStripSize(TIFF*, uint32);
extern	void _TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
extern	int _TIFFDataSize(TIFFDataType);

extern	void _TIFFsetByteArray(void**, void*, uint32);
extern	void _TIFFsetString(char**, char*);
extern	void _TIFFsetShortArray(uint16**, uint16*, uint32);
extern	void _TIFFsetLongArray(uint32**, uint32*, uint32);
extern	void _TIFFsetFloatArray(float**, float*, uint32);
extern	void _TIFFsetDoubleArray(double**, double*, uint32);

extern	void _TIFFprintAscii(FILE*, const char*);
extern	void _TIFFprintAsciiTag(FILE*, const char*, const char*);

extern	TIFFErrorHandler _TIFFwarningHandler;
extern	TIFFErrorHandler _TIFFerrorHandler;
extern	TIFFErrorHandlerExt _TIFFwarningHandlerExt;
extern	TIFFErrorHandlerExt _TIFFerrorHandlerExt;

extern	tdata_t _TIFFCheckMalloc(TIFF*, size_t, size_t, const char*);

extern	int TIFFInitDumpMode(TIFF*, int);
#ifdef PACKBITS_SUPPORT
extern	int TIFFInitPackBits(TIFF*, int);
#endif
#ifdef CCITT_SUPPORT
extern	int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
extern	int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
#endif
#ifdef THUNDER_SUPPORT
extern	int TIFFInitThunderScan(TIFF*, int);
#endif
#ifdef NEXT_SUPPORT
extern	int TIFFInitNeXT(TIFF*, int);
#endif
#ifdef LZW_SUPPORT
extern	int TIFFInitLZW(TIFF*, int);
#endif
#ifdef OJPEG_SUPPORT
extern	int TIFFInitOJPEG(TIFF*, int);
#endif
#ifdef JPEG_SUPPORT
extern	int TIFFInitJPEG(TIFF*, int);
#endif
#ifdef JBIG_SUPPORT
extern	int TIFFInitJBIG(TIFF*, int);
#endif
#ifdef ZIP_SUPPORT
extern	int TIFFInitZIP(TIFF*, int);
#endif
#ifdef PIXARLOG_SUPPORT
extern	int TIFFInitPixarLog(TIFF*, int);
#endif
#ifdef LOGLUV_SUPPORT
extern	int TIFFInitSGILog(TIFF*, int);
#endif
#ifdef VMS
extern	const TIFFCodec _TIFFBuiltinCODECS[];
#else
extern	TIFFCodec _TIFFBuiltinCODECS[];
#endif

#if defined(__cplusplus)
}
#endif
#endif /* _TIFFIOP_ */

/* vim: set ts=8 sts=8 sw=8 noet: */
Commit	Line	Data
8414a40c VZ	1	/* $Id$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	*
	7	* Permission to use, copy, modify, distribute, and sell this software and
	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.
	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	*
	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,
	22	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	23	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	24	* OF THIS SOFTWARE.
	25	*/
	26
	27	#ifndef _TIFFIOP_
	28	#define _TIFFIOP_
	29	/*
	30	* ``Library-private'' definitions.
	31	*/
	32
d24f0fab VZ	33	#ifdef _MSC_VER
	34	# include "tif_config.h.vc"
	35	#else
	36	# include "tif_config.h"
	37	#endif
8414a40c VZ	38
	39	#ifdef HAVE_FCNTL_H
	40	# include <fcntl.h>
	41	#endif
	42
	43	#ifdef HAVE_SYS_TYPES_H
	44	# include <sys/types.h>
	45	#endif
	46
	47	#ifdef HAVE_STRING_H
	48	# include <string.h>
	49	#endif
	50
	51	#ifdef HAVE_ASSERT_H
	52	# include <assert.h>
	53	#else
	54	# define assert(x)
	55	#endif
	56
	57	#ifdef HAVE_SEARCH_H
	58	# include <search.h>
	59	#else
	60	extern void lfind(const void , const void , size_t , size_t,
	61	int ()(const void , const void *));
	62	#endif
	63
	64	#include "tiffio.h"
	65	#include "tif_dir.h"
	66
	67	#ifndef STRIP_SIZE_DEFAULT
	68	# define STRIP_SIZE_DEFAULT 8192
	69	#endif
	70
	71	#define streq(a,b) (strcmp(a,b) == 0)
	72
	73	#ifndef TRUE
	74	#define TRUE 1
	75	#define FALSE 0
	76	#endif
	77
	78	typedef struct client_info {
	79	struct client_info *next;
	80	void *data;
	81	char *name;
	82	} TIFFClientInfoLink;
	83
	84	/*
	85	* Typedefs for ``method pointers'' used internally.
	86	*/
	87	typedef unsigned char tidataval_t; /* internal image data value type */
	88	typedef tidataval_t* tidata_t; /* reference to internal image data */
	89
	90	typedef void (TIFFVoidMethod)(TIFF);
	91	typedef int (TIFFBoolMethod)(TIFF);
	92	typedef int (TIFFPreMethod)(TIFF, tsample_t);
	93	typedef int (TIFFCodeMethod)(TIFF, tidata_t, tsize_t, tsample_t);
	94	typedef int (TIFFSeekMethod)(TIFF, uint32);
	95	typedef void (TIFFPostMethod)(TIFF, tidata_t, tsize_t);
	96	typedef uint32 (TIFFStripMethod)(TIFF, uint32);
	97	typedef void (TIFFTileMethod)(TIFF, uint32, uint32);
	98
	99	struct tiff {
	100	char* tif_name; /* name of open file */
	101	int tif_fd; /* open file descriptor */
102	int tif_mode; /* open mode (O_) /
103	uint32 tif_flags;
104	#define TIFF_FILLORDER 0x0003 /* natural bit fill order for machine */
105	#define TIFF_DIRTYHEADER 0x0004 /* header must be written on close */
106	#define TIFF_DIRTYDIRECT 0x0008 /* current directory must be written */
107	#define TIFF_BUFFERSETUP 0x0010 /* data buffers setup */
108	#define TIFF_CODERSETUP 0x0020 /* encoder/decoder setup done */
109	#define TIFF_BEENWRITING 0x0040 /* written 1+ scanlines to file */
110	#define TIFF_SWAB 0x0080 /* byte swap file information */
111	#define TIFF_NOBITREV 0x0100 /* inhibit bit reversal logic */
112	#define TIFF_MYBUFFER 0x0200 /* my raw data buffer; free on close */
113	#define TIFF_ISTILED 0x0400 /* file is tile, not strip- based */
114	#define TIFF_MAPPED 0x0800 /* file is mapped into memory */
115	#define TIFF_POSTENCODE 0x1000 /* need call to postencode routine */
116	#define TIFF_INSUBIFD 0x2000 /* currently writing a subifd */
117	#define TIFF_UPSAMPLED 0x4000 /* library is doing data up-sampling */
118	#define TIFF_STRIPCHOP 0x8000 /* enable strip chopping support */
119	#define TIFF_HEADERONLY 0x10000 /* read header only, do not process */
120	/* the first directory */
121	toff_t tif_diroff; /* file offset of current directory */
122	toff_t tif_nextdiroff; /* file offset of following directory */
123	toff_t* tif_dirlist; /* list of offsets to already seen */
124	/* directories to prevent IFD looping */
125	uint16 tif_dirnumber; /* number of already seen directories */
126	TIFFDirectory tif_dir; /* internal rep of current directory */
127	TIFFHeader tif_header; /* file's header block */
128	const int* tif_typeshift; /* data type shift counts */
129	const long* tif_typemask; /* data type masks */
130	uint32 tif_row; /* current scanline */
131	tdir_t tif_curdir; /* current directory (index) */
132	tstrip_t tif_curstrip; /* current strip for read/write */
133	toff_t tif_curoff; /* current offset for read/write */
134	toff_t tif_dataoff; /* current offset for writing dir */
135	/* SubIFD support */
136	uint16 tif_nsubifd; /* remaining subifds to write */
137	toff_t tif_subifdoff; /* offset for patching SubIFD link */
138	/* tiling support */
139	uint32 tif_col; /* current column (offset by row too) */
140	ttile_t tif_curtile; /* current tile for read/write */
141	tsize_t tif_tilesize; /* # of bytes in a tile */
142	/* compression scheme hooks */
143	int tif_decodestatus;
144	TIFFBoolMethod tif_setupdecode;/* called once before predecode */
145	TIFFPreMethod tif_predecode; /* pre- row/strip/tile decoding */
146	TIFFBoolMethod tif_setupencode;/* called once before preencode */
147	int tif_encodestatus;
148	TIFFPreMethod tif_preencode; /* pre- row/strip/tile encoding */
149	TIFFBoolMethod tif_postencode; /* post- row/strip/tile encoding */
150	TIFFCodeMethod tif_decoderow; /* scanline decoding routine */
151	TIFFCodeMethod tif_encoderow; /* scanline encoding routine */
152	TIFFCodeMethod tif_decodestrip;/* strip decoding routine */
153	TIFFCodeMethod tif_encodestrip;/* strip encoding routine */
154	TIFFCodeMethod tif_decodetile; /* tile decoding routine */
155	TIFFCodeMethod tif_encodetile; /* tile encoding routine */
156	TIFFVoidMethod tif_close; /* cleanup-on-close routine */
157	TIFFSeekMethod tif_seek; /* position within a strip routine */
158	TIFFVoidMethod tif_cleanup; /* cleanup state routine */
159	TIFFStripMethod tif_defstripsize;/* calculate/constrain strip size */
160	TIFFTileMethod tif_deftilesize;/* calculate/constrain tile size */
161	tidata_t tif_data; /* compression scheme private data */
162	/* input/output buffering */
163	tsize_t tif_scanlinesize;/* # of bytes in a scanline */
164	tsize_t tif_scanlineskew;/* scanline skew for reading strips */
165	tidata_t tif_rawdata; /* raw data buffer */
166	tsize_t tif_rawdatasize;/* # of bytes in raw data buffer */
167	tidata_t tif_rawcp; /* current spot in raw buffer */
168	tsize_t tif_rawcc; /* bytes unread from raw buffer */
169	/* memory-mapped file support */
170	tidata_t tif_base; /* base of mapped file */
171	toff_t tif_size; /* size of mapped file region (bytes) */
172	TIFFMapFileProc tif_mapproc; /* map file method */
173	TIFFUnmapFileProc tif_unmapproc;/* unmap file method */
174	/* input/output callback methods */
175	thandle_t tif_clientdata; /* callback parameter */
176	TIFFReadWriteProc tif_readproc; /* read method */
177	TIFFReadWriteProc tif_writeproc;/* write method */
178	TIFFSeekProc tif_seekproc; /* lseek method */
179	TIFFCloseProc tif_closeproc; /* close method */
180	TIFFSizeProc tif_sizeproc; /* filesize method */
181	/* post-decoding support */
182	TIFFPostMethod tif_postdecode; /* post decoding routine */
183	/* tag support */
184	TIFFFieldInfo** tif_fieldinfo; /* sorted table of registered tags */
185	size_t tif_nfields; /* # entries in registered tag table */
186	const TIFFFieldInfo tif_foundfield;/ cached pointer to already found tag */
187	TIFFTagMethods tif_tagmethods; /* tag get/set/print routines */
188	TIFFClientInfoLink tif_clientinfo; / extra client information. */
189	};
190
191	#define isPseudoTag(t) (t > 0xffff) /* is tag value normal or pseudo */
192
193	#define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
194	#define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
195	#define isFillOrder(tif, o) (((tif)->tif_flags & (o)) != 0)
196	#define isUpSampled(tif) (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
197	#define TIFFReadFile(tif, buf, size) \
198	((*(tif)->tif_readproc)((tif)->tif_clientdata,buf,size))
199	#define TIFFWriteFile(tif, buf, size) \
200	((*(tif)->tif_writeproc)((tif)->tif_clientdata,buf,size))
201	#define TIFFSeekFile(tif, off, whence) \
202	((*(tif)->tif_seekproc)((tif)->tif_clientdata,(toff_t)(off),whence))
203	#define TIFFCloseFile(tif) \
204	((*(tif)->tif_closeproc)((tif)->tif_clientdata))
205	#define TIFFGetFileSize(tif) \
206	((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
207	#define TIFFMapFileContents(tif, paddr, psize) \
208	((*(tif)->tif_mapproc)((tif)->tif_clientdata,paddr,psize))
209	#define TIFFUnmapFileContents(tif, addr, size) \
210	((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))
211
212	/*
213	* Default Read/Seek/Write definitions.
214	*/
215	#ifndef ReadOK
216	#define ReadOK(tif, buf, size) \
217	(TIFFReadFile(tif, (tdata_t) buf, (tsize_t)(size)) == (tsize_t)(size))
218	#endif
219	#ifndef SeekOK
220	#define SeekOK(tif, off) \
221	(TIFFSeekFile(tif, (toff_t) off, SEEK_SET) == (toff_t) off)
222	#endif
223	#ifndef WriteOK
224	#define WriteOK(tif, buf, size) \
225	(TIFFWriteFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
226	#endif
227
228	/* NB: the uint32 casts are to silence certain ANSI-C compilers */
229	#define TIFFhowmany(x, y) ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y)))
230	#define TIFFhowmany8(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
231	#define TIFFroundup(x, y) (TIFFhowmany(x,y)*(y))
232
233	#define TIFFmax(A,B) ((A)>(B)?(A):(B))
234	#define TIFFmin(A,B) ((A)<(B)?(A):(B))
235
236	#define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
237
238	#if defined(__cplusplus)
239	extern "C" {
240	#endif
241	extern int _TIFFgetMode(const char, const char);
242	extern int _TIFFNoRowEncode(TIFF*, tidata_t, tsize_t, tsample_t);
243	extern int _TIFFNoStripEncode(TIFF*, tidata_t, tsize_t, tsample_t);
244	extern int _TIFFNoTileEncode(TIFF*, tidata_t, tsize_t, tsample_t);
245	extern int _TIFFNoRowDecode(TIFF*, tidata_t, tsize_t, tsample_t);
246	extern int _TIFFNoStripDecode(TIFF*, tidata_t, tsize_t, tsample_t);
247	extern int _TIFFNoTileDecode(TIFF*, tidata_t, tsize_t, tsample_t);
248	extern void _TIFFNoPostDecode(TIFF*, tidata_t, tsize_t);
249	extern int _TIFFNoPreCode (TIFF*, tsample_t);
250	extern int _TIFFNoSeek(TIFF*, uint32);
251	extern void _TIFFSwab16BitData(TIFF*, tidata_t, tsize_t);
252	extern void _TIFFSwab24BitData(TIFF*, tidata_t, tsize_t);
253	extern void _TIFFSwab32BitData(TIFF*, tidata_t, tsize_t);
254	extern void _TIFFSwab64BitData(TIFF*, tidata_t, tsize_t);
255	extern int TIFFFlushData1(TIFF*);
256	extern int TIFFDefaultDirectory(TIFF*);
257	extern void _TIFFSetDefaultCompressionState(TIFF*);
258	extern int TIFFSetCompressionScheme(TIFF*, int);
259	extern int TIFFSetDefaultCompressionState(TIFF*);
260	extern uint32 _TIFFDefaultStripSize(TIFF*, uint32);
261	extern void _TIFFDefaultTileSize(TIFF, uint32, uint32*);
262	extern int _TIFFDataSize(TIFFDataType);
263
264	extern void _TIFFsetByteArray(void*, void, uint32);
265	extern void _TIFFsetString(char*, char);
266	extern void _TIFFsetShortArray(uint16*, uint16, uint32);
267	extern void _TIFFsetLongArray(uint32*, uint32, uint32);
268	extern void _TIFFsetFloatArray(float*, float, uint32);
269	extern void _TIFFsetDoubleArray(double*, double, uint32);
270
271	extern void _TIFFprintAscii(FILE, const char);
272	extern void _TIFFprintAsciiTag(FILE, const char, const char*);
273
274	extern TIFFErrorHandler _TIFFwarningHandler;
275	extern TIFFErrorHandler _TIFFerrorHandler;
276	extern TIFFErrorHandlerExt _TIFFwarningHandlerExt;
277	extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;
278
279	extern tdata_t _TIFFCheckMalloc(TIFF, size_t, size_t, const char);
280
281	extern int TIFFInitDumpMode(TIFF*, int);
282	#ifdef PACKBITS_SUPPORT
283	extern int TIFFInitPackBits(TIFF*, int);
284	#endif
285	#ifdef CCITT_SUPPORT
286	extern int TIFFInitCCITTRLE(TIFF, int), TIFFInitCCITTRLEW(TIFF, int);
287	extern int TIFFInitCCITTFax3(TIFF, int), TIFFInitCCITTFax4(TIFF, int);
288	#endif
289	#ifdef THUNDER_SUPPORT
290	extern int TIFFInitThunderScan(TIFF*, int);
291	#endif
292	#ifdef NEXT_SUPPORT
293	extern int TIFFInitNeXT(TIFF*, int);
294	#endif
295	#ifdef LZW_SUPPORT
296	extern int TIFFInitLZW(TIFF*, int);
297	#endif
298	#ifdef OJPEG_SUPPORT
299	extern int TIFFInitOJPEG(TIFF*, int);
300	#endif
301	#ifdef JPEG_SUPPORT
302	extern int TIFFInitJPEG(TIFF*, int);
303	#endif
304	#ifdef JBIG_SUPPORT
305	extern int TIFFInitJBIG(TIFF*, int);
306	#endif
307	#ifdef ZIP_SUPPORT
308	extern int TIFFInitZIP(TIFF*, int);
309	#endif
310	#ifdef PIXARLOG_SUPPORT
311	extern int TIFFInitPixarLog(TIFF*, int);
312	#endif
313	#ifdef LOGLUV_SUPPORT
314	extern int TIFFInitSGILog(TIFF*, int);
315	#endif
316	#ifdef VMS
317	extern const TIFFCodec _TIFFBuiltinCODECS[];
318	#else
319	extern TIFFCodec _TIFFBuiltinCODECS[];
320	#endif
321
322	#if defined(__cplusplus)
323	}
324	#endif
325	#endif /* _TIFFIOP_ */
326
327	/* vim: set ts=8 sts=8 sw=8 noet: */