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/* $Header: /d1/sam/tiff/libtiff/RCS/tiffiop.h,v 1.84 1997/08/29 21:45:41 sam 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 _TIFFIOP_
#define _TIFFIOP_
/*
* ``Library-private'' definitions.
*/
/*
* UNIX systems should run the configure script to generate
* a port.h file that reflects the system capabilities.
* Doing this obviates all the dreck done in tiffcomp.h.
*/
#if defined(unix) || defined(__unix)
#include "port.h"
#include "tiffconf.h"
#else
#include "tiffconf.h"
#include "tiffcomp.h"
#endif
#include "tiffio.h"
#include "tif_dir.h"
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
/*
* 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 int (*TIFFVSetMethod)(TIFF*, ttag_t, va_list);
typedef int (*TIFFVGetMethod)(TIFF*, ttag_t, va_list);
typedef void (*TIFFPrintMethod)(TIFF*, FILE*, long);
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 */
toff_t tif_diroff; /* file offset of current directory */
toff_t tif_nextdiroff; /* file offset of following directory */
TIFFDirectory tif_dir; /* internal rep of current directory */
TIFFHeader tif_header; /* file's header block */
tidata_t tif_clientdir; /* client TIFF directory */
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 */
#if SUBIFD_SUPPORT
uint16 tif_nsubifd; /* remaining subifds to write */
toff_t tif_subifdoff; /* offset for patching SubIFD link */
#endif
/* 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 */
TIFFBoolMethod tif_setupdecode;/* called once before predecode */
TIFFPreMethod tif_predecode; /* pre- row/strip/tile decoding */
TIFFBoolMethod tif_setupencode;/* called once before preencode */
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 */
int tif_nfields; /* # entries in registered tag table */
TIFFVSetMethod tif_vsetfield; /* tag set routine */
TIFFVGetMethod tif_vgetfield; /* tag get routine */
TIFFPrintMethod tif_printdir; /* directory print routine */
};
#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 TIFFroundup(x, y) (TIFFhowmany(x,y)*((uint32)(y)))
#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 _TIFFNoSeek(TIFF*, uint32);
extern void _TIFFSwab16BitData(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 void TIFFFreeDirectory(TIFF*);
extern int TIFFDefaultDirectory(TIFF*);
extern int TIFFSetCompressionScheme(TIFF*, int);
extern int TIFFSetDefaultCompressionState(TIFF*);
extern uint32 _TIFFDefaultStripSize(TIFF*, uint32);
extern void _TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
extern void _TIFFsetByteArray(void**, void*, long);
extern void _TIFFsetString(char**, char*);
extern void _TIFFsetShortArray(uint16**, uint16*, long);
extern void _TIFFsetLongArray(uint32**, uint32*, long);
extern void _TIFFsetFloatArray(float**, float*, long);
extern void _TIFFsetDoubleArray(double**, double*, long);
extern void _TIFFprintAscii(FILE*, const char*);
extern void _TIFFprintAsciiTag(FILE*, const char*, const char*);
GLOBALDATA(TIFFErrorHandler,_TIFFwarningHandler);
GLOBALDATA(TIFFErrorHandler,_TIFFerrorHandler);
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_ */
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