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/* $Id: tiffiop.h,v 1.78 2010-06-10 22:53:11 bfriesen 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.
*/
#include "tif_config.h"
#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
/*
* TIFF Image File Directories are comprised of a table of field
* descriptors of the form shown below. The table is sorted in
* ascending order by tag. The values associated with each entry are
* disjoint and may appear anywhere in the file (so long as they are
* placed on a word boundary).
*
* If the value is 4 bytes or less, in ClassicTIFF, or 8 bytes or less in
* BigTIFF, then it is placed in the offset field to save space. If so,
* it is left-justified in the offset field.
*/
typedef struct {
uint16 tdir_tag; /* see below */
uint16 tdir_type; /* data type; see below */
uint64 tdir_count; /* number of items; length in spec */
union {
uint16 toff_short;
uint32 toff_long;
uint64 toff_long8;
} tdir_offset; /* either offset or the data itself if fits */
} TIFFDirEntry;
typedef struct client_info {
struct client_info *next;
void *data;
char *name;
} TIFFClientInfoLink;
/*
* Typedefs for ``method pointers'' used internally.
* these are depriciated and provided only for backwards compatibility
*/
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*, uint16);
typedef int (*TIFFCodeMethod)(TIFF* tif, uint8* buf, tmsize_t size, uint16 sample);
typedef int (*TIFFSeekMethod)(TIFF*, uint32);
typedef void (*TIFFPostMethod)(TIFF* tif, uint8* buf, tmsize_t size);
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 0x00003 /* natural bit fill order for machine */
#define TIFF_DIRTYHEADER 0x00004 /* header must be written on close */
#define TIFF_DIRTYDIRECT 0x00008 /* current directory must be written */
#define TIFF_BUFFERSETUP 0x00010 /* data buffers setup */
#define TIFF_CODERSETUP 0x00020 /* encoder/decoder setup done */
#define TIFF_BEENWRITING 0x00040 /* written 1+ scanlines to file */
#define TIFF_SWAB 0x00080 /* byte swap file information */
#define TIFF_NOBITREV 0x00100 /* inhibit bit reversal logic */
#define TIFF_MYBUFFER 0x00200 /* my raw data buffer; free on close */
#define TIFF_ISTILED 0x00400 /* file is tile, not strip- based */
#define TIFF_MAPPED 0x00800 /* file is mapped into memory */
#define TIFF_POSTENCODE 0x01000 /* need call to postencode routine */
#define TIFF_INSUBIFD 0x02000 /* currently writing a subifd */
#define TIFF_UPSAMPLED 0x04000 /* library is doing data up-sampling */
#define TIFF_STRIPCHOP 0x08000 /* enable strip chopping support */
#define TIFF_HEADERONLY 0x10000 /* read header only, do not process the first directory */
#define TIFF_NOREADRAW 0x20000 /* skip reading of raw uncompressed image data */
#define TIFF_INCUSTOMIFD 0x40000 /* currently writing a custom IFD */
#define TIFF_BIGTIFF 0x80000 /* read/write bigtiff */
#define TIFF_BUF4WRITE 0x100000 /* rawcc bytes are for writing */
#define TIFF_DIRTYSTRIP 0x200000 /* stripoffsets/stripbytecount dirty*/
uint64 tif_diroff; /* file offset of current directory */
uint64 tif_nextdiroff; /* file offset of following directory */
uint64* tif_dirlist; /* list of offsets to already seen directories to prevent IFD looping */
uint16 tif_dirlistsize; /* number of entires in offset list */
uint16 tif_dirnumber; /* number of already seen directories */
TIFFDirectory tif_dir; /* internal rep of current directory */
TIFFDirectory tif_customdir; /* custom IFDs are separated from the main ones */
union {
TIFFHeaderCommon common;
TIFFHeaderClassic classic;
TIFFHeaderBig big;
} tif_header;
uint16 tif_header_size; /* file's header block and its length */
uint32 tif_row; /* current scanline */
uint16 tif_curdir; /* current directory (index) */
uint32 tif_curstrip; /* current strip for read/write */
uint64 tif_curoff; /* current offset for read/write */
uint64 tif_dataoff; /* current offset for writing dir */
/* SubIFD support */
uint16 tif_nsubifd; /* remaining subifds to write */
uint64 tif_subifdoff; /* offset for patching SubIFD link */
/* tiling support */
uint32 tif_col; /* current column (offset by row too) */
uint32 tif_curtile; /* current tile for read/write */
tmsize_t tif_tilesize; /* # of bytes in a tile */
/* compression scheme hooks */
int tif_decodestatus;
TIFFBoolMethod tif_fixuptags; /* called in TIFFReadDirectory */
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 */
uint8* tif_data; /* compression scheme private data */
/* input/output buffering */
tmsize_t tif_scanlinesize; /* # of bytes in a scanline */
tmsize_t tif_scanlineskew; /* scanline skew for reading strips */
uint8* tif_rawdata; /* raw data buffer */
tmsize_t tif_rawdatasize; /* # of bytes in raw data buffer */
tmsize_t tif_rawdataoff; /* rawdata offset within strip */
tmsize_t tif_rawdataloaded;/* amount of data in rawdata */
uint8* tif_rawcp; /* current spot in raw buffer */
tmsize_t tif_rawcc; /* bytes unread from raw buffer */
/* memory-mapped file support */
uint8* tif_base; /* base of mapped file */
tmsize_t tif_size; /* size of mapped file region (bytes, thus tmsize_t) */
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 */
TIFFField** tif_fields; /* sorted table of registered tags */
size_t tif_nfields; /* # entries in registered tag table */
const TIFFField* tif_foundfield; /* cached pointer to already found tag */
TIFFTagMethods tif_tagmethods; /* tag get/set/print routines */
TIFFClientInfoLink* tif_clientinfo; /* extra client information. */
/* Backward compatibility stuff. We need these two fields for
* setting up an old tag extension scheme. */
TIFFFieldArray* tif_fieldscompat;
size_t tif_nfieldscompat;
};
#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,(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),(buf),(size))==(size))
#endif
#ifndef SeekOK
#define SeekOK(tif, off) \
(TIFFSeekFile((tif),(off),SEEK_SET)==(off))
#endif
#ifndef WriteOK
#define WriteOK(tif, buf, size) \
(TIFFWriteFile((tif),(buf),(size))==(size))
#endif
/* NB: the uint32 casts are to silence certain ANSI-C compilers */
#define TIFFhowmany_32(x, y) (((uint32)x < (0xffffffff - (uint32)(y-1))) ? \
((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y))) : \
0U)
#define TIFFhowmany8_32(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
#define TIFFroundup_32(x, y) (TIFFhowmany_32(x,y)*(y))
#define TIFFhowmany_64(x, y) ((((uint64)(x))+(((uint64)(y))-1))/((uint64)(y)))
#define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3)
#define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y))
/* Safe multiply which returns zero if there is an integer overflow */
#define TIFFSafeMultiply(t,v,m) ((((t)m != (t)0) && (((t)v*m)/(t)m == (t)v)) ? (t)v*m : (t)0)
#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* mode, const char* module);
extern int _TIFFNoRowEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
extern int _TIFFNoStripEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
extern int _TIFFNoTileEncode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
extern int _TIFFNoRowDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
extern int _TIFFNoStripDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
extern int _TIFFNoTileDecode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
extern void _TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc);
extern int _TIFFNoPreCode(TIFF* tif, uint16 s);
extern int _TIFFNoSeek(TIFF* tif, uint32 off);
extern void _TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc);
extern void _TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc);
extern void _TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc);
extern void _TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc);
extern int TIFFFlushData1(TIFF* tif);
extern int TIFFDefaultDirectory(TIFF* tif);
extern void _TIFFSetDefaultCompressionState(TIFF* tif);
extern int _TIFFRewriteField(TIFF *, uint16, TIFFDataType, tmsize_t, void *);
extern int TIFFSetCompressionScheme(TIFF* tif, int scheme);
extern int TIFFSetDefaultCompressionState(TIFF* tif);
extern uint32 _TIFFDefaultStripSize(TIFF* tif, uint32 s);
extern void _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th);
extern int _TIFFDataSize(TIFFDataType type);
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 void* _TIFFCheckMalloc(TIFF* tif, tmsize_t nmemb, tmsize_t elem_size, const char* what);
extern void* _TIFFCheckRealloc(TIFF* tif, void* buffer, tmsize_t nmemb, tmsize_t elem_size, const char* what);
extern double _TIFFUInt64ToDouble(uint64);
extern float _TIFFUInt64ToFloat(uint64);
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: */
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
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