src/tiff/tiffiop.h

   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)
  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
  52 /*
  53  * Typedefs for ``method pointers'' used internally.
  54  */
  55 typedef unsigned char tidataval_t;      /* internal image data value type */
  56 typedef tidataval_t* tidata_t;          /* reference to internal image data */
  57
  58 typedef void (*TIFFVoidMethod)(TIFF*);
  59 typedef int (*TIFFBoolMethod)(TIFF*);
  60 typedef int (*TIFFPreMethod)(TIFF*, tsample_t);
  61 typedef int (*TIFFCodeMethod)(TIFF*, tidata_t, tsize_t, tsample_t);
  62 typedef int (*TIFFSeekMethod)(TIFF*, uint32);
  63 typedef void (*TIFFPostMethod)(TIFF*, tidata_t, tsize_t);
  64 typedef int (*TIFFVSetMethod)(TIFF*, ttag_t, va_list);
  65 typedef int (*TIFFVGetMethod)(TIFF*, ttag_t, va_list);
  66 typedef void (*TIFFPrintMethod)(TIFF*, FILE*, long);
  67 typedef uint32 (*TIFFStripMethod)(TIFF*, uint32);
  68 typedef void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
  69
  70 struct tiff {
  71         char*           tif_name;       /* name of open file */
  72         int             tif_fd;         /* open file descriptor */
  73         int             tif_mode;       /* open mode (O_*) */
  74         uint32          tif_flags;
  75 #define TIFF_FILLORDER          0x0003  /* natural bit fill order for machine */
  76 #define TIFF_DIRTYHEADER        0x0004  /* header must be written on close */
  77 #define TIFF_DIRTYDIRECT        0x0008  /* current directory must be written */
  78 #define TIFF_BUFFERSETUP        0x0010  /* data buffers setup */
  79 #define TIFF_CODERSETUP         0x0020  /* encoder/decoder setup done */
  80 #define TIFF_BEENWRITING        0x0040  /* written 1+ scanlines to file */
  81 #define TIFF_SWAB               0x0080  /* byte swap file information */
  82 #define TIFF_NOBITREV           0x0100  /* inhibit bit reversal logic */
  83 #define TIFF_MYBUFFER           0x0200  /* my raw data buffer; free on close */
  84 #define TIFF_ISTILED            0x0400  /* file is tile, not strip- based */
  85 #define TIFF_MAPPED             0x0800  /* file is mapped into memory */
  86 #define TIFF_POSTENCODE         0x1000  /* need call to postencode routine */
  87 #define TIFF_INSUBIFD           0x2000  /* currently writing a subifd */
  88 #define TIFF_UPSAMPLED          0x4000  /* library is doing data up-sampling */
  89 #define TIFF_STRIPCHOP          0x8000  /* enable strip chopping support */
  90         toff_t          tif_diroff;     /* file offset of current directory */
  91         toff_t          tif_nextdiroff; /* file offset of following directory */
  92         TIFFDirectory   tif_dir;        /* internal rep of current directory */
  93         TIFFHeader      tif_header;     /* file's header block */
  94         tidata_t        tif_clientdir;  /* client TIFF directory */
  95         const int*      tif_typeshift;  /* data type shift counts */
  96         const long*     tif_typemask;   /* data type masks */
  97         uint32          tif_row;        /* current scanline */
  98         tdir_t          tif_curdir;     /* current directory (index) */
  99         tstrip_t        tif_curstrip;   /* current strip for read/write */
 100         toff_t          tif_curoff;     /* current offset for read/write */
 101         toff_t          tif_dataoff;    /* current offset for writing dir */
 102 #if SUBIFD_SUPPORT
 103         uint16          tif_nsubifd;    /* remaining subifds to write */
 104         toff_t          tif_subifdoff;  /* offset for patching SubIFD link */
 105 #endif
 106 /* tiling support */
 107         uint32          tif_col;        /* current column (offset by row too) */
 108         ttile_t         tif_curtile;    /* current tile for read/write */
 109         tsize_t         tif_tilesize;   /* # of bytes in a tile */
 110 /* compression scheme hooks */
 111         TIFFBoolMethod  tif_setupdecode;/* called once before predecode */
 112         TIFFPreMethod   tif_predecode;  /* pre- row/strip/tile decoding */
 113         TIFFBoolMethod  tif_setupencode;/* called once before preencode */
 114         TIFFPreMethod   tif_preencode;  /* pre- row/strip/tile encoding */
 115         TIFFBoolMethod  tif_postencode; /* post- row/strip/tile encoding */
 116         TIFFCodeMethod  tif_decoderow;  /* scanline decoding routine */
 117         TIFFCodeMethod  tif_encoderow;  /* scanline encoding routine */
 118         TIFFCodeMethod  tif_decodestrip;/* strip decoding routine */
 119         TIFFCodeMethod  tif_encodestrip;/* strip encoding routine */
 120         TIFFCodeMethod  tif_decodetile; /* tile decoding routine */
 121         TIFFCodeMethod  tif_encodetile; /* tile encoding routine */
 122         TIFFVoidMethod  tif_close;      /* cleanup-on-close routine */
 123         TIFFSeekMethod  tif_seek;       /* position within a strip routine */
 124         TIFFVoidMethod  tif_cleanup;    /* cleanup state routine */
 125         TIFFStripMethod tif_defstripsize;/* calculate/constrain strip size */
 126         TIFFTileMethod  tif_deftilesize;/* calculate/constrain tile size */
 127         tidata_t        tif_data;       /* compression scheme private data */
 128 /* input/output buffering */
 129         tsize_t         tif_scanlinesize;/* # of bytes in a scanline */
 130         tsize_t         tif_scanlineskew;/* scanline skew for reading strips */
 131         tidata_t        tif_rawdata;    /* raw data buffer */
 132         tsize_t         tif_rawdatasize;/* # of bytes in raw data buffer */
 133         tidata_t        tif_rawcp;      /* current spot in raw buffer */
 134         tsize_t         tif_rawcc;      /* bytes unread from raw buffer */
 135 /* memory-mapped file support */
 136         tidata_t        tif_base;       /* base of mapped file */
 137         toff_t          tif_size;       /* size of mapped file region (bytes) */
 138         TIFFMapFileProc tif_mapproc;    /* map file method */
 139         TIFFUnmapFileProc tif_unmapproc;/* unmap file method */
 140 /* input/output callback methods */
 141         thandle_t       tif_clientdata; /* callback parameter */
 142         TIFFReadWriteProc tif_readproc; /* read method */
 143         TIFFReadWriteProc tif_writeproc;/* write method */
 144         TIFFSeekProc    tif_seekproc;   /* lseek method */
 145         TIFFCloseProc   tif_closeproc;  /* close method */
 146         TIFFSizeProc    tif_sizeproc;   /* filesize method */
 147 /* post-decoding support */
 148         TIFFPostMethod  tif_postdecode; /* post decoding routine */
 149 /* tag support */
 150         TIFFFieldInfo** tif_fieldinfo;  /* sorted table of registered tags */
 151         int             tif_nfields;    /* # entries in registered tag table */
 152         TIFFVSetMethod  tif_vsetfield;  /* tag set routine */
 153         TIFFVGetMethod  tif_vgetfield;  /* tag get routine */
 154         TIFFPrintMethod tif_printdir;   /* directory print routine */
 155 };
 156
 157 #define isPseudoTag(t)  (t > 0xffff)    /* is tag value normal or pseudo */
 158
 159 #define isTiled(tif)    (((tif)->tif_flags & TIFF_ISTILED) != 0)
 160 #define isMapped(tif)   (((tif)->tif_flags & TIFF_MAPPED) != 0)
 161 #define isFillOrder(tif, o)     (((tif)->tif_flags & (o)) != 0)
 162 #define isUpSampled(tif)        (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
 163 #define TIFFReadFile(tif, buf, size) \
 164         ((*(tif)->tif_readproc)((tif)->tif_clientdata,buf,size))
 165 #define TIFFWriteFile(tif, buf, size) \
 166         ((*(tif)->tif_writeproc)((tif)->tif_clientdata,buf,size))
 167 #define TIFFSeekFile(tif, off, whence) \
 168         ((*(tif)->tif_seekproc)((tif)->tif_clientdata,(toff_t)(off),whence))
 169 #define TIFFCloseFile(tif) \
 170         ((*(tif)->tif_closeproc)((tif)->tif_clientdata))
 171 #define TIFFGetFileSize(tif) \
 172         ((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
 173 #define TIFFMapFileContents(tif, paddr, psize) \
 174         ((*(tif)->tif_mapproc)((tif)->tif_clientdata,paddr,psize))
 175 #define TIFFUnmapFileContents(tif, addr, size) \
 176         ((*(tif)->tif_unmapproc)((tif)->tif_clientdata,addr,size))
 177
 178 /*
 179  * Default Read/Seek/Write definitions.
 180  */
 181 #ifndef ReadOK
 182 #define ReadOK(tif, buf, size) \
 183         (TIFFReadFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
 184 #endif
 185 #ifndef SeekOK
 186 #define SeekOK(tif, off) \
 187         (TIFFSeekFile(tif, (toff_t) off, SEEK_SET) == (toff_t) off)
 188 #endif
 189 #ifndef WriteOK
 190 #define WriteOK(tif, buf, size) \
 191         (TIFFWriteFile(tif, (tdata_t) buf, (tsize_t) size) == (tsize_t) size)
 192 #endif
 193
 194 /* NB: the uint32 casts are to silence certain ANSI-C compilers */
 195 #define TIFFhowmany(x, y) ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y)))
 196 #define TIFFroundup(x, y) (TIFFhowmany(x,y)*((uint32)(y)))
 197
 198 #if defined(__cplusplus)
 199 extern "C" {
 200 #endif
 201 extern  int _TIFFgetMode(const char*, const char*);
 202 extern  int _TIFFNoRowEncode(TIFF*, tidata_t, tsize_t, tsample_t);
 203 extern  int _TIFFNoStripEncode(TIFF*, tidata_t, tsize_t, tsample_t);
 204 extern  int _TIFFNoTileEncode(TIFF*, tidata_t, tsize_t, tsample_t);
 205 extern  int _TIFFNoRowDecode(TIFF*, tidata_t, tsize_t, tsample_t);
 206 extern  int _TIFFNoStripDecode(TIFF*, tidata_t, tsize_t, tsample_t);
 207 extern  int _TIFFNoTileDecode(TIFF*, tidata_t, tsize_t, tsample_t);
 208 extern  void _TIFFNoPostDecode(TIFF*, tidata_t, tsize_t);
 209 extern  int _TIFFNoSeek(TIFF*, uint32);
 210 extern  void _TIFFSwab16BitData(TIFF*, tidata_t, tsize_t);
 211 extern  void _TIFFSwab32BitData(TIFF*, tidata_t, tsize_t);
 212 extern  void _TIFFSwab64BitData(TIFF*, tidata_t, tsize_t);
 213 extern  int TIFFFlushData1(TIFF*);
 214 extern  void TIFFFreeDirectory(TIFF*);
 215 extern  int TIFFDefaultDirectory(TIFF*);
 216 extern  int TIFFSetCompressionScheme(TIFF*, int);
 217 extern  int TIFFSetDefaultCompressionState(TIFF*);
 218 extern  uint32 _TIFFDefaultStripSize(TIFF*, uint32);
 219 extern  void _TIFFDefaultTileSize(TIFF*, uint32*, uint32*);
 220
 221 extern  void _TIFFsetByteArray(void**, void*, long);
 222 extern  void _TIFFsetString(char**, char*);
 223 extern  void _TIFFsetShortArray(uint16**, uint16*, long);
 224 extern  void _TIFFsetLongArray(uint32**, uint32*, long);
 225 extern  void _TIFFsetFloatArray(float**, float*, long);
 226 extern  void _TIFFsetDoubleArray(double**, double*, long);
 227
 228 extern  void _TIFFprintAscii(FILE*, const char*);
 229 extern  void _TIFFprintAsciiTag(FILE*, const char*, const char*);
 230
 231 GLOBALDATA(TIFFErrorHandler,_TIFFwarningHandler);
 232 GLOBALDATA(TIFFErrorHandler,_TIFFerrorHandler);
 233
 234 extern  int TIFFInitDumpMode(TIFF*, int);
 235 #ifdef PACKBITS_SUPPORT
 236 extern  int TIFFInitPackBits(TIFF*, int);
 237 #endif
 238 #ifdef CCITT_SUPPORT
 239 extern  int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
 240 extern  int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
 241 #endif
 242 #ifdef THUNDER_SUPPORT
 243 extern  int TIFFInitThunderScan(TIFF*, int);
 244 #endif
 245 #ifdef NEXT_SUPPORT
 246 extern  int TIFFInitNeXT(TIFF*, int);
 247 #endif
 248 #ifdef LZW_SUPPORT
 249 extern  int TIFFInitLZW(TIFF*, int);
 250 #endif
 251 #ifdef OJPEG_SUPPORT
 252 extern  int TIFFInitOJPEG(TIFF*, int);
 253 #endif
 254 #ifdef JPEG_SUPPORT
 255 extern  int TIFFInitJPEG(TIFF*, int);
 256 #endif
 257 #ifdef JBIG_SUPPORT
 258 extern  int TIFFInitJBIG(TIFF*, int);
 259 #endif
 260 #ifdef ZIP_SUPPORT
 261 extern  int TIFFInitZIP(TIFF*, int);
 262 #endif
 263 #ifdef PIXARLOG_SUPPORT
 264 extern  int TIFFInitPixarLog(TIFF*, int);
 265 #endif
 266 #ifdef LOGLUV_SUPPORT
 267 extern  int TIFFInitSGILog(TIFF*, int);
 268 #endif
 269 #ifdef VMS
 270 extern  const TIFFCodec _TIFFBuiltinCODECS[];
 271 #else
 272 extern  TIFFCodec _TIFFBuiltinCODECS[];
 273 #endif
 274
 275 #if defined(__cplusplus)
 276 }
 277 #endif
 278 #endif /* _TIFFIOP_ */