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