368 lines
15 KiB
C
368 lines
15 KiB
C
/* $Id: tiffiop.h,v 1.84 2012-05-30 01:50:17 fwarmerdam Exp $ */
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/*
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* Copyright (c) 1988-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#ifndef _TIFFIOP_
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#define _TIFFIOP_
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/*
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* ``Library-private'' definitions.
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*/
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#include "tif_config.h"
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#ifdef HAVE_FCNTL_H
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# include <fcntl.h>
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_ASSERT_H
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# include <assert.h>
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#else
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# define assert(x)
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#endif
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#ifdef HAVE_SEARCH_H
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# include <search.h>
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#else
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extern void *lfind(const void *, const void *, size_t *, size_t,
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int (*)(const void *, const void *));
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#endif
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#include "tiffio.h"
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#include "tif_dir.h"
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#ifndef STRIP_SIZE_DEFAULT
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# define STRIP_SIZE_DEFAULT 8192
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#endif
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#define streq(a,b) (strcmp(a,b) == 0)
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#ifndef TRUE
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#define TRUE 1
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#define FALSE 0
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#endif
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typedef struct client_info {
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struct client_info *next;
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void *data;
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char *name;
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} TIFFClientInfoLink;
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/*
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* Typedefs for ``method pointers'' used internally.
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* these are depriciated and provided only for backwards compatibility
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*/
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typedef unsigned char tidataval_t; /* internal image data value type */
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typedef tidataval_t* tidata_t; /* reference to internal image data */
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typedef void (*TIFFVoidMethod)(TIFF*);
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typedef int (*TIFFBoolMethod)(TIFF*);
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typedef int (*TIFFPreMethod)(TIFF*, uint16);
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typedef int (*TIFFCodeMethod)(TIFF* tif, uint8* buf, tmsize_t size, uint16 sample);
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typedef int (*TIFFSeekMethod)(TIFF*, uint32);
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typedef void (*TIFFPostMethod)(TIFF* tif, uint8* buf, tmsize_t size);
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typedef uint32 (*TIFFStripMethod)(TIFF*, uint32);
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typedef void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
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struct tiff {
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char* tif_name; /* name of open file */
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int tif_fd; /* open file descriptor */
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int tif_mode; /* open mode (O_*) */
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uint32 tif_flags;
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#define TIFF_FILLORDER 0x00003 /* natural bit fill order for machine */
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#define TIFF_DIRTYHEADER 0x00004 /* header must be written on close */
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#define TIFF_DIRTYDIRECT 0x00008 /* current directory must be written */
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#define TIFF_BUFFERSETUP 0x00010 /* data buffers setup */
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#define TIFF_CODERSETUP 0x00020 /* encoder/decoder setup done */
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#define TIFF_BEENWRITING 0x00040 /* written 1+ scanlines to file */
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#define TIFF_SWAB 0x00080 /* byte swap file information */
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#define TIFF_NOBITREV 0x00100 /* inhibit bit reversal logic */
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#define TIFF_MYBUFFER 0x00200 /* my raw data buffer; free on close */
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#define TIFF_ISTILED 0x00400 /* file is tile, not strip- based */
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#define TIFF_MAPPED 0x00800 /* file is mapped into memory */
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#define TIFF_POSTENCODE 0x01000 /* need call to postencode routine */
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#define TIFF_INSUBIFD 0x02000 /* currently writing a subifd */
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#define TIFF_UPSAMPLED 0x04000 /* library is doing data up-sampling */
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#define TIFF_STRIPCHOP 0x08000 /* enable strip chopping support */
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#define TIFF_HEADERONLY 0x10000 /* read header only, do not process the first directory */
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#define TIFF_NOREADRAW 0x20000 /* skip reading of raw uncompressed image data */
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#define TIFF_INCUSTOMIFD 0x40000 /* currently writing a custom IFD */
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#define TIFF_BIGTIFF 0x80000 /* read/write bigtiff */
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#define TIFF_BUF4WRITE 0x100000 /* rawcc bytes are for writing */
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#define TIFF_DIRTYSTRIP 0x200000 /* stripoffsets/stripbytecount dirty*/
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#define TIFF_PERSAMPLE 0x400000 /* get/set per sample tags as arrays */
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#define TIFF_BUFFERMMAP 0x800000 /* read buffer (tif_rawdata) points into mmap() memory */
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uint64 tif_diroff; /* file offset of current directory */
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uint64 tif_nextdiroff; /* file offset of following directory */
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uint64* tif_dirlist; /* list of offsets to already seen directories to prevent IFD looping */
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uint16 tif_dirlistsize; /* number of entires in offset list */
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uint16 tif_dirnumber; /* number of already seen directories */
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TIFFDirectory tif_dir; /* internal rep of current directory */
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TIFFDirectory tif_customdir; /* custom IFDs are separated from the main ones */
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union {
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TIFFHeaderCommon common;
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TIFFHeaderClassic classic;
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TIFFHeaderBig big;
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} tif_header;
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uint16 tif_header_size; /* file's header block and its length */
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uint32 tif_row; /* current scanline */
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uint16 tif_curdir; /* current directory (index) */
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uint32 tif_curstrip; /* current strip for read/write */
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uint64 tif_curoff; /* current offset for read/write */
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uint64 tif_dataoff; /* current offset for writing dir */
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/* SubIFD support */
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uint16 tif_nsubifd; /* remaining subifds to write */
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uint64 tif_subifdoff; /* offset for patching SubIFD link */
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/* tiling support */
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uint32 tif_col; /* current column (offset by row too) */
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uint32 tif_curtile; /* current tile for read/write */
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tmsize_t tif_tilesize; /* # of bytes in a tile */
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/* compression scheme hooks */
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int tif_decodestatus;
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TIFFBoolMethod tif_fixuptags; /* called in TIFFReadDirectory */
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TIFFBoolMethod tif_setupdecode; /* called once before predecode */
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TIFFPreMethod tif_predecode; /* pre- row/strip/tile decoding */
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TIFFBoolMethod tif_setupencode; /* called once before preencode */
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int tif_encodestatus;
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TIFFPreMethod tif_preencode; /* pre- row/strip/tile encoding */
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TIFFBoolMethod tif_postencode; /* post- row/strip/tile encoding */
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TIFFCodeMethod tif_decoderow; /* scanline decoding routine */
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TIFFCodeMethod tif_encoderow; /* scanline encoding routine */
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TIFFCodeMethod tif_decodestrip; /* strip decoding routine */
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TIFFCodeMethod tif_encodestrip; /* strip encoding routine */
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TIFFCodeMethod tif_decodetile; /* tile decoding routine */
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TIFFCodeMethod tif_encodetile; /* tile encoding routine */
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TIFFVoidMethod tif_close; /* cleanup-on-close routine */
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TIFFSeekMethod tif_seek; /* position within a strip routine */
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TIFFVoidMethod tif_cleanup; /* cleanup state routine */
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TIFFStripMethod tif_defstripsize; /* calculate/constrain strip size */
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TIFFTileMethod tif_deftilesize; /* calculate/constrain tile size */
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uint8* tif_data; /* compression scheme private data */
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/* input/output buffering */
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tmsize_t tif_scanlinesize; /* # of bytes in a scanline */
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tmsize_t tif_scanlineskew; /* scanline skew for reading strips */
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uint8* tif_rawdata; /* raw data buffer */
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tmsize_t tif_rawdatasize; /* # of bytes in raw data buffer */
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tmsize_t tif_rawdataoff; /* rawdata offset within strip */
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tmsize_t tif_rawdataloaded;/* amount of data in rawdata */
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uint8* tif_rawcp; /* current spot in raw buffer */
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tmsize_t tif_rawcc; /* bytes unread from raw buffer */
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/* memory-mapped file support */
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uint8* tif_base; /* base of mapped file */
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tmsize_t tif_size; /* size of mapped file region (bytes, thus tmsize_t) */
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TIFFMapFileProc tif_mapproc; /* map file method */
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TIFFUnmapFileProc tif_unmapproc; /* unmap file method */
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/* input/output callback methods */
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thandle_t tif_clientdata; /* callback parameter */
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TIFFReadWriteProc tif_readproc; /* read method */
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TIFFReadWriteProc tif_writeproc; /* write method */
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TIFFSeekProc tif_seekproc; /* lseek method */
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TIFFCloseProc tif_closeproc; /* close method */
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TIFFSizeProc tif_sizeproc; /* filesize method */
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/* post-decoding support */
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TIFFPostMethod tif_postdecode; /* post decoding routine */
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/* tag support */
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TIFFField** tif_fields; /* sorted table of registered tags */
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size_t tif_nfields; /* # entries in registered tag table */
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const TIFFField* tif_foundfield; /* cached pointer to already found tag */
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TIFFTagMethods tif_tagmethods; /* tag get/set/print routines */
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TIFFClientInfoLink* tif_clientinfo; /* extra client information. */
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/* Backward compatibility stuff. We need these two fields for
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* setting up an old tag extension scheme. */
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TIFFFieldArray* tif_fieldscompat;
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size_t tif_nfieldscompat;
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};
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#define isPseudoTag(t) (t > 0xffff) /* is tag value normal or pseudo */
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#define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
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#define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
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#define isFillOrder(tif, o) (((tif)->tif_flags & (o)) != 0)
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#define isUpSampled(tif) (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
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#define TIFFReadFile(tif, buf, size) \
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((*(tif)->tif_readproc)((tif)->tif_clientdata,(buf),(size)))
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#define TIFFWriteFile(tif, buf, size) \
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((*(tif)->tif_writeproc)((tif)->tif_clientdata,(buf),(size)))
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#define TIFFSeekFile(tif, off, whence) \
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((*(tif)->tif_seekproc)((tif)->tif_clientdata,(off),(whence)))
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#define TIFFCloseFile(tif) \
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((*(tif)->tif_closeproc)((tif)->tif_clientdata))
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#define TIFFGetFileSize(tif) \
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((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
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#define TIFFMapFileContents(tif, paddr, psize) \
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((*(tif)->tif_mapproc)((tif)->tif_clientdata,(paddr),(psize)))
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#define TIFFUnmapFileContents(tif, addr, size) \
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((*(tif)->tif_unmapproc)((tif)->tif_clientdata,(addr),(size)))
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/*
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* Default Read/Seek/Write definitions.
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*/
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#ifndef ReadOK
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#define ReadOK(tif, buf, size) \
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(TIFFReadFile((tif),(buf),(size))==(size))
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#endif
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#ifndef SeekOK
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#define SeekOK(tif, off) \
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(TIFFSeekFile((tif),(off),SEEK_SET)==(off))
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#endif
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#ifndef WriteOK
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#define WriteOK(tif, buf, size) \
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(TIFFWriteFile((tif),(buf),(size))==(size))
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#endif
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/* NB: the uint32 casts are to silence certain ANSI-C compilers */
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#define TIFFhowmany_32(x, y) (((uint32)x < (0xffffffff - (uint32)(y-1))) ? \
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((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y))) : \
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0U)
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#define TIFFhowmany8_32(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
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#define TIFFroundup_32(x, y) (TIFFhowmany_32(x,y)*(y))
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#define TIFFhowmany_64(x, y) ((((uint64)(x))+(((uint64)(y))-1))/((uint64)(y)))
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#define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3)
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#define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y))
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/* Safe multiply which returns zero if there is an integer overflow */
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#define TIFFSafeMultiply(t,v,m) ((((t)(m) != (t)0) && (((t)(((v)*(m))/(m))) == (t)(v))) ? (t)((v)*(m)) : (t)0)
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#define TIFFmax(A,B) ((A)>(B)?(A):(B))
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#define TIFFmin(A,B) ((A)<(B)?(A):(B))
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#define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
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#if defined(__cplusplus)
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extern "C" {
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#endif
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extern int _TIFFgetMode(const char* mode, const char* module);
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extern int _TIFFNoRowEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
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extern int _TIFFNoStripEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
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extern int _TIFFNoTileEncode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
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extern int _TIFFNoRowDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
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extern int _TIFFNoStripDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
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extern int _TIFFNoTileDecode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
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extern void _TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc);
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extern int _TIFFNoPreCode(TIFF* tif, uint16 s);
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extern int _TIFFNoSeek(TIFF* tif, uint32 off);
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extern void _TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc);
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extern void _TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc);
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extern void _TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc);
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extern void _TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc);
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extern int TIFFFlushData1(TIFF* tif);
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extern int TIFFDefaultDirectory(TIFF* tif);
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extern void _TIFFSetDefaultCompressionState(TIFF* tif);
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extern int _TIFFRewriteField(TIFF *, uint16, TIFFDataType, tmsize_t, void *);
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extern int TIFFSetCompressionScheme(TIFF* tif, int scheme);
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extern int TIFFSetDefaultCompressionState(TIFF* tif);
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extern uint32 _TIFFDefaultStripSize(TIFF* tif, uint32 s);
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extern void _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th);
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extern int _TIFFDataSize(TIFFDataType type);
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extern void _TIFFsetByteArray(void**, void*, uint32);
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extern void _TIFFsetString(char**, char*);
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extern void _TIFFsetShortArray(uint16**, uint16*, uint32);
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extern void _TIFFsetLongArray(uint32**, uint32*, uint32);
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extern void _TIFFsetFloatArray(float**, float*, uint32);
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extern void _TIFFsetDoubleArray(double**, double*, uint32);
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extern void _TIFFprintAscii(FILE*, const char*);
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extern void _TIFFprintAsciiTag(FILE*, const char*, const char*);
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extern TIFFErrorHandler _TIFFwarningHandler;
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extern TIFFErrorHandler _TIFFerrorHandler;
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extern TIFFErrorHandlerExt _TIFFwarningHandlerExt;
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extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;
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extern uint32 _TIFFMultiply32(TIFF*, uint32, uint32, const char*);
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extern uint64 _TIFFMultiply64(TIFF*, uint64, uint64, const char*);
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extern void* _TIFFCheckMalloc(TIFF*, tmsize_t, tmsize_t, const char*);
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extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*);
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extern double _TIFFUInt64ToDouble(uint64);
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extern float _TIFFUInt64ToFloat(uint64);
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extern int TIFFInitDumpMode(TIFF*, int);
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#ifdef PACKBITS_SUPPORT
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extern int TIFFInitPackBits(TIFF*, int);
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#endif
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#ifdef CCITT_SUPPORT
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extern int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
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extern int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
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#endif
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#ifdef THUNDER_SUPPORT
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extern int TIFFInitThunderScan(TIFF*, int);
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#endif
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#ifdef NEXT_SUPPORT
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extern int TIFFInitNeXT(TIFF*, int);
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#endif
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#ifdef LZW_SUPPORT
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extern int TIFFInitLZW(TIFF*, int);
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#endif
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#ifdef OJPEG_SUPPORT
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extern int TIFFInitOJPEG(TIFF*, int);
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#endif
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#ifdef JPEG_SUPPORT
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extern int TIFFInitJPEG(TIFF*, int);
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#endif
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#ifdef JBIG_SUPPORT
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extern int TIFFInitJBIG(TIFF*, int);
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#endif
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#ifdef ZIP_SUPPORT
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extern int TIFFInitZIP(TIFF*, int);
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#endif
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#ifdef PIXARLOG_SUPPORT
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extern int TIFFInitPixarLog(TIFF*, int);
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#endif
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#ifdef LOGLUV_SUPPORT
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extern int TIFFInitSGILog(TIFF*, int);
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#endif
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#ifdef LZMA_SUPPORT
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extern int TIFFInitLZMA(TIFF*, int);
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#endif
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#ifdef VMS
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extern const TIFFCodec _TIFFBuiltinCODECS[];
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#else
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extern TIFFCodec _TIFFBuiltinCODECS[];
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#endif
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#if defined(__cplusplus)
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}
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#endif
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#endif /* _TIFFIOP_ */
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/* vim: set ts=8 sts=8 sw=8 noet: */
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/*
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* Local Variables:
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* mode: c
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* c-basic-offset: 8
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* fill-column: 78
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* End:
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*/
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