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- /* $Header: /usr/people/sam/tiff/libtiff/RCS/tiffiop.h,v 1.75 1995/10/12 18:45:02 sam Exp $ */
-
- /*
- * Copyright (c) 1988-1995 Sam Leffler
- * Copyright (c) 1991-1995 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 */
- 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 */
- #ifdef WIN32
- void* pv_map_handle; /* WIN32 file mapping handle;
- * must be contiguous with tif_base
- * since map & unmap only get tif_base
- * and assume 4 byte offset to
- * pv_map_handle. */
- #endif
- 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 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))
- #ifdef WIN32
- #define TIFFUnmapFileContents(tif, addr, dummy) \
- ((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,\
- (toff_t)(tif)->pv_map_handle))
- #else
- #define TIFFUnmapFileContents(tif, addr, size) \
- ((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))
- #endif
-
- /*
- * 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 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 VMS
- extern const TIFFCodec _TIFFBuiltinCODECS[];
- #else
- extern TIFFCodec _TIFFBuiltinCODECS[];
- #endif
-
- #if defined(__cplusplus)
- }
- #endif
- #endif /* _TIFFIOP_ */
-