| 1 | /* $Id: tiffiop.h,v 1.46 2006/03/16 12:22:27 dron Exp $ */
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| 2 |
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| 3 | /*
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| 4 | * Copyright (c) 1988-1997 Sam Leffler
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| 5 | * Copyright (c) 1991-1997 Silicon Graphics, Inc.
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| 6 | *
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| 7 | * Permission to use, copy, modify, distribute, and sell this software and
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| 8 | * its documentation for any purpose is hereby granted without fee, provided
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| 9 | * that (i) the above copyright notices and this permission notice appear in
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| 10 | * all copies of the software and related documentation, and (ii) the names of
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| 11 | * Sam Leffler and Silicon Graphics may not be used in any advertising or
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| 12 | * publicity relating to the software without the specific, prior written
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| 13 | * permission of Sam Leffler and Silicon Graphics.
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| 14 | *
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| 15 | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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| 16 | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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| 17 | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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| 18 | *
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| 19 | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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| 20 | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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| 21 | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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| 22 | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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| 23 | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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| 24 | * OF THIS SOFTWARE.
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| 25 | */
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| 26 |
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| 27 | #ifndef _TIFFIOP_
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| 28 | #define _TIFFIOP_
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| 29 | /*
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| 30 | * ``Library-private'' definitions.
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| 31 | */
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| 32 |
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| 33 | #include "tif_config.h"
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| 34 |
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| 35 | #ifdef HAVE_FCNTL_H
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| 36 | # include <fcntl.h>
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| 37 | #endif
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| 38 |
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| 39 | #ifdef HAVE_SYS_TYPES_H
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| 40 | # include <sys/types.h>
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| 41 | #endif
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| 42 |
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| 43 | #ifdef HAVE_STRING_H
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| 44 | # include <string.h>
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| 45 | #endif
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| 46 |
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| 47 | #ifdef HAVE_ASSERT_H
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| 48 | # include <assert.h>
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| 49 | #else
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| 50 | # define assert(x)
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| 51 | #endif
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| 52 |
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| 53 | #ifdef HAVE_SEARCH_H
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| 54 | # include <search.h>
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| 55 | #else
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| 56 | extern void *lfind(const void *, const void *, size_t *, size_t,
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| 57 | int (*)(const void *, const void *));
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| 58 | #endif
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| 59 |
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| 60 | #include "tiffio.h"
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| 61 | #include "tif_dir.h"
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| 62 |
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| 63 | #ifndef STRIP_SIZE_DEFAULT
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| 64 | # define STRIP_SIZE_DEFAULT 8192
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| 65 | #endif
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| 66 |
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| 67 | #define streq(a,b) (strcmp(a,b) == 0)
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| 68 |
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| 69 | #ifndef TRUE
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| 70 | #define TRUE 1
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| 71 | #define FALSE 0
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| 72 | #endif
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| 73 |
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| 74 | typedef struct client_info {
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| 75 | struct client_info *next;
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| 76 | void *data;
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| 77 | char *name;
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| 78 | } TIFFClientInfoLink;
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| 79 |
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| 80 | /*
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| 81 | * Typedefs for ``method pointers'' used internally.
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| 82 | */
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| 83 | typedef unsigned char tidataval_t; /* internal image data value type */
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| 84 | typedef tidataval_t* tidata_t; /* reference to internal image data */
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| 85 |
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| 86 | typedef void (*TIFFVoidMethod)(TIFF*);
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| 87 | typedef int (*TIFFBoolMethod)(TIFF*);
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| 88 | typedef int (*TIFFPreMethod)(TIFF*, tsample_t);
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| 89 | typedef int (*TIFFCodeMethod)(TIFF*, tidata_t, tsize_t, tsample_t);
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| 90 | typedef int (*TIFFSeekMethod)(TIFF*, uint32);
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| 91 | typedef void (*TIFFPostMethod)(TIFF*, tidata_t, tsize_t);
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| 92 | typedef uint32 (*TIFFStripMethod)(TIFF*, uint32);
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| 93 | typedef void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
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| 94 |
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| 95 | struct tiff {
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| 96 | char* tif_name; /* name of open file */
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| 97 | int tif_fd; /* open file descriptor */
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| 98 | int tif_mode; /* open mode (O_*) */
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| 99 | uint32 tif_flags;
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| 100 | #define TIFF_FILLORDER 0x0003 /* natural bit fill order for machine */
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| 101 | #define TIFF_DIRTYHEADER 0x0004 /* header must be written on close */
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| 102 | #define TIFF_DIRTYDIRECT 0x0008 /* current directory must be written */
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| 103 | #define TIFF_BUFFERSETUP 0x0010 /* data buffers setup */
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| 104 | #define TIFF_CODERSETUP 0x0020 /* encoder/decoder setup done */
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| 105 | #define TIFF_BEENWRITING 0x0040 /* written 1+ scanlines to file */
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| 106 | #define TIFF_SWAB 0x0080 /* byte swap file information */
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| 107 | #define TIFF_NOBITREV 0x0100 /* inhibit bit reversal logic */
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| 108 | #define TIFF_MYBUFFER 0x0200 /* my raw data buffer; free on close */
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| 109 | #define TIFF_ISTILED 0x0400 /* file is tile, not strip- based */
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| 110 | #define TIFF_MAPPED 0x0800 /* file is mapped into memory */
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| 111 | #define TIFF_POSTENCODE 0x1000 /* need call to postencode routine */
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| 112 | #define TIFF_INSUBIFD 0x2000 /* currently writing a subifd */
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| 113 | #define TIFF_UPSAMPLED 0x4000 /* library is doing data up-sampling */
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| 114 | #define TIFF_STRIPCHOP 0x8000 /* enable strip chopping support */
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| 115 | #define TIFF_HEADERONLY 0x10000 /* read header only, do not process */
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| 116 | /* the first directory */
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| 117 | toff_t tif_diroff; /* file offset of current directory */
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| 118 | toff_t tif_nextdiroff; /* file offset of following directory */
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| 119 | toff_t* tif_dirlist; /* list of offsets to already seen */
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| 120 | /* directories to prevent IFD looping */
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| 121 | uint16 tif_dirnumber; /* number of already seen directories */
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| 122 | TIFFDirectory tif_dir; /* internal rep of current directory */
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| 123 | TIFFHeader tif_header; /* file's header block */
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| 124 | const int* tif_typeshift; /* data type shift counts */
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| 125 | const long* tif_typemask; /* data type masks */
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| 126 | uint32 tif_row; /* current scanline */
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| 127 | tdir_t tif_curdir; /* current directory (index) */
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| 128 | tstrip_t tif_curstrip; /* current strip for read/write */
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| 129 | toff_t tif_curoff; /* current offset for read/write */
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| 130 | toff_t tif_dataoff; /* current offset for writing dir */
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| 131 | /* SubIFD support */
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| 132 | uint16 tif_nsubifd; /* remaining subifds to write */
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| 133 | toff_t tif_subifdoff; /* offset for patching SubIFD link */
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| 134 | /* tiling support */
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| 135 | uint32 tif_col; /* current column (offset by row too) */
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| 136 | ttile_t tif_curtile; /* current tile for read/write */
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| 137 | tsize_t tif_tilesize; /* # of bytes in a tile */
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| 138 | /* compression scheme hooks */
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| 139 | int tif_decodestatus;
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| 140 | TIFFBoolMethod tif_setupdecode;/* called once before predecode */
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| 141 | TIFFPreMethod tif_predecode; /* pre- row/strip/tile decoding */
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| 142 | TIFFBoolMethod tif_setupencode;/* called once before preencode */
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| 143 | int tif_encodestatus;
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| 144 | TIFFPreMethod tif_preencode; /* pre- row/strip/tile encoding */
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| 145 | TIFFBoolMethod tif_postencode; /* post- row/strip/tile encoding */
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| 146 | TIFFCodeMethod tif_decoderow; /* scanline decoding routine */
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| 147 | TIFFCodeMethod tif_encoderow; /* scanline encoding routine */
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| 148 | TIFFCodeMethod tif_decodestrip;/* strip decoding routine */
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| 149 | TIFFCodeMethod tif_encodestrip;/* strip encoding routine */
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| 150 | TIFFCodeMethod tif_decodetile; /* tile decoding routine */
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| 151 | TIFFCodeMethod tif_encodetile; /* tile encoding routine */
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| 152 | TIFFVoidMethod tif_close; /* cleanup-on-close routine */
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| 153 | TIFFSeekMethod tif_seek; /* position within a strip routine */
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| 154 | TIFFVoidMethod tif_cleanup; /* cleanup state routine */
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| 155 | TIFFStripMethod tif_defstripsize;/* calculate/constrain strip size */
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| 156 | TIFFTileMethod tif_deftilesize;/* calculate/constrain tile size */
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| 157 | tidata_t tif_data; /* compression scheme private data */
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| 158 | /* input/output buffering */
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| 159 | tsize_t tif_scanlinesize;/* # of bytes in a scanline */
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| 160 | tsize_t tif_scanlineskew;/* scanline skew for reading strips */
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| 161 | tidata_t tif_rawdata; /* raw data buffer */
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| 162 | tsize_t tif_rawdatasize;/* # of bytes in raw data buffer */
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| 163 | tidata_t tif_rawcp; /* current spot in raw buffer */
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| 164 | tsize_t tif_rawcc; /* bytes unread from raw buffer */
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| 165 | /* memory-mapped file support */
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| 166 | tidata_t tif_base; /* base of mapped file */
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| 167 | toff_t tif_size; /* size of mapped file region (bytes) */
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| 168 | TIFFMapFileProc tif_mapproc; /* map file method */
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| 169 | TIFFUnmapFileProc tif_unmapproc;/* unmap file method */
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| 170 | /* input/output callback methods */
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| 171 | thandle_t tif_clientdata; /* callback parameter */
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| 172 | TIFFReadWriteProc tif_readproc; /* read method */
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| 173 | TIFFReadWriteProc tif_writeproc;/* write method */
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| 174 | TIFFSeekProc tif_seekproc; /* lseek method */
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| 175 | TIFFCloseProc tif_closeproc; /* close method */
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| 176 | TIFFSizeProc tif_sizeproc; /* filesize method */
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| 177 | /* post-decoding support */
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| 178 | TIFFPostMethod tif_postdecode; /* post decoding routine */
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| 179 | /* tag support */
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| 180 | TIFFFieldInfo** tif_fieldinfo; /* sorted table of registered tags */
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| 181 | size_t tif_nfields; /* # entries in registered tag table */
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| 182 | const TIFFFieldInfo *tif_foundfield;/* cached pointer to already found tag */
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| 183 | TIFFTagMethods tif_tagmethods; /* tag get/set/print routines */
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| 184 | TIFFClientInfoLink *tif_clientinfo; /* extra client information. */
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| 185 | };
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| 186 |
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| 187 | #define isPseudoTag(t) (t > 0xffff) /* is tag value normal or pseudo */
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| 188 |
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| 189 | #define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
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| 190 | #define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
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| 191 | #define isFillOrder(tif, o) (((tif)->tif_flags & (o)) != 0)
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| 192 | #define isUpSampled(tif) (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
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| 193 | #define TIFFReadFile(tif, buf, size) \
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| 194 | ((*(tif)->tif_readproc)((tif)->tif_clientdata,buf,size))
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| 195 | #define TIFFWriteFile(tif, buf, size) \
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| 196 | ((*(tif)->tif_writeproc)((tif)->tif_clientdata,buf,size))
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| 197 | #define TIFFSeekFile(tif, off, whence) \
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| 198 | ((*(tif)->tif_seekproc)((tif)->tif_clientdata,(toff_t)(off),whence))
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| 199 | #define TIFFCloseFile(tif) \
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| 200 | ((*(tif)->tif_closeproc)((tif)->tif_clientdata))
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| 201 | #define TIFFGetFileSize(tif) \
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| 202 | ((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
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| 203 | #define TIFFMapFileContents(tif, paddr, psize) \
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| 204 | ((*(tif)->tif_mapproc)((tif)->tif_clientdata,paddr,psize))
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| 205 | #define TIFFUnmapFileContents(tif, addr, size) \
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| 206 | ((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))
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| 207 |
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| 208 | /*
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| 209 | * Default Read/Seek/Write definitions.
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| 210 | */
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| 211 | #ifndef ReadOK
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| 212 | #define ReadOK(tif, buf, size) \
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| 213 | (TIFFReadFile(tif, (tdata_t) buf, (tsize_t)(size)) == (tsize_t)(size))
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| 214 | #endif
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| 215 | #ifndef SeekOK
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| 216 | #define SeekOK(tif, off) \
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| 217 | (TIFFSeekFile(tif, (toff_t) off, SEEK_SET) == (toff_t) off)
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| 218 | #endif
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| 219 | #ifndef WriteOK
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| 220 | #define WriteOK(tif, buf, size) \
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| 221 | (TIFFWriteFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
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| 222 | #endif
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| 223 |
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| 224 | /* NB: the uint32 casts are to silence certain ANSI-C compilers */
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| 225 | #define TIFFhowmany(x, y) ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y)))
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| 226 | #define TIFFhowmany8(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
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| 227 | #define TIFFroundup(x, y) (TIFFhowmany(x,y)*(y))
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| 228 |
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| 229 | #define TIFFmax(A,B) ((A)>(B)?(A):(B))
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| 230 | #define TIFFmin(A,B) ((A)<(B)?(A):(B))
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| 231 |
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| 232 | #define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
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| 233 |
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| 234 | #if defined(__cplusplus)
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| 235 | extern "C" {
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| 236 | #endif
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| 237 | extern int _TIFFgetMode(const char*, const char*);
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| 238 | extern int _TIFFNoRowEncode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 239 | extern int _TIFFNoStripEncode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 240 | extern int _TIFFNoTileEncode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 241 | extern int _TIFFNoRowDecode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 242 | extern int _TIFFNoStripDecode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 243 | extern int _TIFFNoTileDecode(TIFF*, tidata_t, tsize_t, tsample_t);
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| 244 | extern void _TIFFNoPostDecode(TIFF*, tidata_t, tsize_t);
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| 245 | extern int _TIFFNoPreCode (TIFF*, tsample_t);
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| 246 | extern int _TIFFNoSeek(TIFF*, uint32);
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| 247 | extern void _TIFFSwab16BitData(TIFF*, tidata_t, tsize_t);
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| 248 | extern void _TIFFSwab24BitData(TIFF*, tidata_t, tsize_t);
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| 249 | extern void _TIFFSwab32BitData(TIFF*, tidata_t, tsize_t);
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| 250 | extern void _TIFFSwab64BitData(TIFF*, tidata_t, tsize_t);
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| 251 | extern int TIFFFlushData1(TIFF*);
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| 252 | extern int TIFFDefaultDirectory(TIFF*);
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| 253 | extern void _TIFFSetDefaultCompressionState(TIFF*);
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| 254 | extern int TIFFSetCompressionScheme(TIFF*, int);
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| 255 | extern int TIFFSetDefaultCompressionState(TIFF*);
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| 256 | extern uint32 _TIFFDefaultStripSize(TIFF*, uint32);
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| 257 | extern void _TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
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| 258 | extern int _TIFFDataSize(TIFFDataType);
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| 259 |
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| 260 | extern void _TIFFsetByteArray(void**, void*, uint32);
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| 261 | extern void _TIFFsetString(char**, char*);
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| 262 | extern void _TIFFsetShortArray(uint16**, uint16*, uint32);
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| 263 | extern void _TIFFsetLongArray(uint32**, uint32*, uint32);
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| 264 | extern void _TIFFsetFloatArray(float**, float*, uint32);
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| 265 | extern void _TIFFsetDoubleArray(double**, double*, uint32);
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| 266 |
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| 267 | extern void _TIFFprintAscii(FILE*, const char*);
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| 268 | extern void _TIFFprintAsciiTag(FILE*, const char*, const char*);
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| 269 |
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| 270 | extern TIFFErrorHandler _TIFFwarningHandler;
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| 271 | extern TIFFErrorHandler _TIFFerrorHandler;
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| 272 | extern TIFFErrorHandlerExt _TIFFwarningHandlerExt;
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| 273 | extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;
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| 274 |
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| 275 | extern tdata_t _TIFFCheckMalloc(TIFF*, size_t, size_t, const char*);
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| 276 |
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| 277 | extern int TIFFInitDumpMode(TIFF*, int);
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| 278 | #ifdef PACKBITS_SUPPORT
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| 279 | extern int TIFFInitPackBits(TIFF*, int);
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| 280 | #endif
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| 281 | #ifdef CCITT_SUPPORT
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| 282 | extern int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
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| 283 | extern int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
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| 284 | #endif
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| 285 | #ifdef THUNDER_SUPPORT
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| 286 | extern int TIFFInitThunderScan(TIFF*, int);
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| 287 | #endif
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| 288 | #ifdef NEXT_SUPPORT
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| 289 | extern int TIFFInitNeXT(TIFF*, int);
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| 290 | #endif
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| 291 | #ifdef LZW_SUPPORT
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| 292 | extern int TIFFInitLZW(TIFF*, int);
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| 293 | #endif
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| 294 | #ifdef OJPEG_SUPPORT
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| 295 | extern int TIFFInitOJPEG(TIFF*, int);
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| 296 | #endif
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| 297 | #ifdef JPEG_SUPPORT
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| 298 | extern int TIFFInitJPEG(TIFF*, int);
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| 299 | #endif
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| 300 | #ifdef JBIG_SUPPORT
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| 301 | extern int TIFFInitJBIG(TIFF*, int);
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| 302 | #endif
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| 303 | #ifdef ZIP_SUPPORT
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| 304 | extern int TIFFInitZIP(TIFF*, int);
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| 305 | #endif
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| 306 | #ifdef PIXARLOG_SUPPORT
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| 307 | extern int TIFFInitPixarLog(TIFF*, int);
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| 308 | #endif
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| 309 | #ifdef LOGLUV_SUPPORT
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| 310 | extern int TIFFInitSGILog(TIFF*, int);
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| 311 | #endif
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| 312 | #ifdef VMS
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| 313 | extern const TIFFCodec _TIFFBuiltinCODECS[];
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| 314 | #else
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| 315 | extern TIFFCodec _TIFFBuiltinCODECS[];
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| 316 | #endif
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| 317 |
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| 318 | #if defined(__cplusplus)
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| 319 | }
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| 320 | #endif
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| 321 | #endif /* _TIFFIOP_ */
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| 322 |
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| 323 | /* vim: set ts=8 sts=8 sw=8 noet: */
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