1 /*
2  * Copyright (c) 1988-1997 Sam Leffler
3  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
4  *
5  * Permission to use, copy, modify, distribute, and sell this software and
6  * its documentation for any purpose is hereby granted without fee, provided
7  * that (i) the above copyright notices and this permission notice appear in
8  * all copies of the software and related documentation, and (ii) the names of
9  * Sam Leffler and Silicon Graphics may not be used in any advertising or
10  * publicity relating to the software without the specific, prior written
11  * permission of Sam Leffler and Silicon Graphics.
12  *
13  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
14  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
15  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
16  *
17  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
18  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
19  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
20  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
21  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
22  * OF THIS SOFTWARE.
23  */
24 
25 #ifndef _TIFFIOP_
26 #define	_TIFFIOP_
27 /*
28  * ``Library-private'' definitions.
29  */
30 
31 #include "tif_config.h"
32 
33 #ifdef HAVE_FCNTL_H
34 # include <fcntl.h>
35 #endif
36 
37 #ifdef HAVE_SYS_TYPES_H
38 # include <sys/types.h>
39 #endif
40 
41 #ifdef HAVE_STRING_H
42 # include <string.h>
43 #endif
44 
45 #ifdef HAVE_ASSERT_H
46 # include <assert.h>
47 #else
48 # define assert(x)
49 #endif
50 
51 #ifdef HAVE_SEARCH_H
52 # include <search.h>
53 #else
54 extern void *lfind(const void *, const void *, size_t *, size_t,
55 		   int (*)(const void *, const void *));
56 #endif
57 
58 #if !defined(HAVE_SNPRINTF) && !defined(HAVE__SNPRINTF)
59 #undef snprintf
60 #define snprintf _TIFF_snprintf_f
61 extern int snprintf(char* str, size_t size, const char* format, ...);
62 #endif
63 
64 #include "tiffio.h"
65 
66 #include "tif_dir.h"
67 
68 #ifndef STRIP_SIZE_DEFAULT
69 # define STRIP_SIZE_DEFAULT 8192
70 #endif
71 
72 #define    streq(a,b)      (strcmp(a,b) == 0)
73 #define    strneq(a,b,n)   (strncmp(a,b,n) == 0)
74 
75 #ifndef TRUE
76 #define	TRUE	1
77 #define	FALSE	0
78 #endif
79 
80 #define TIFF_SIZE_T_MAX ((size_t) ~ ((size_t)0))
81 #define TIFF_TMSIZE_T_MAX (tmsize_t)(TIFF_SIZE_T_MAX >> 1)
82 
83 /*
84  * Largest 32-bit unsigned integer value.
85  */
86 #define TIFF_UINT32_MAX 0xFFFFFFFFU
87 
88 /*
89  * Largest 64-bit unsigned integer value.
90  */
91 #define TIFF_UINT64_MAX (((uint64)(TIFF_UINT32_MAX)) << 32 | TIFF_UINT32_MAX)
92 
93 typedef struct client_info {
94     struct client_info *next;
95     void *data;
96     char *name;
97 } TIFFClientInfoLink;
98 
99 /*
100  * Typedefs for ``method pointers'' used internally.
101  * these are deprecated and provided only for backwards compatibility.
102  */
103 typedef unsigned char tidataval_t;    /* internal image data value type */
104 typedef tidataval_t* tidata_t;        /* reference to internal image data */
105 
106 typedef void (*TIFFVoidMethod)(TIFF*);
107 typedef int (*TIFFBoolMethod)(TIFF*);
108 typedef int (*TIFFPreMethod)(TIFF*, uint16);
109 typedef int (*TIFFCodeMethod)(TIFF* tif, uint8* buf, tmsize_t size, uint16 sample);
110 typedef int (*TIFFSeekMethod)(TIFF*, uint32);
111 typedef void (*TIFFPostMethod)(TIFF* tif, uint8* buf, tmsize_t size);
112 typedef uint32 (*TIFFStripMethod)(TIFF*, uint32);
113 typedef void (*TIFFTileMethod)(TIFF*, uint32*, uint32*);
114 
115 struct tiff {
116 	char*                tif_name;         /* name of open file */
117 	int                  tif_fd;           /* open file descriptor */
118 	int                  tif_mode;         /* open mode (O_*) */
119 	uint32               tif_flags;
120 	#define TIFF_FILLORDER   0x00003U /* natural bit fill order for machine */
121 	#define TIFF_DIRTYHEADER 0x00004U /* header must be written on close */
122 	#define TIFF_DIRTYDIRECT 0x00008U /* current directory must be written */
123 	#define TIFF_BUFFERSETUP 0x00010U /* data buffers setup */
124 	#define TIFF_CODERSETUP  0x00020U /* encoder/decoder setup done */
125 	#define TIFF_BEENWRITING 0x00040U /* written 1+ scanlines to file */
126 	#define TIFF_SWAB        0x00080U /* byte swap file information */
127 	#define TIFF_NOBITREV    0x00100U /* inhibit bit reversal logic */
128 	#define TIFF_MYBUFFER    0x00200U /* my raw data buffer; free on close */
129 	#define TIFF_ISTILED     0x00400U /* file is tile, not strip- based */
130 	#define TIFF_MAPPED      0x00800U /* file is mapped into memory */
131 	#define TIFF_POSTENCODE  0x01000U /* need call to postencode routine */
132 	#define TIFF_INSUBIFD    0x02000U /* currently writing a subifd */
133 	#define TIFF_UPSAMPLED   0x04000U /* library is doing data up-sampling */
134 	#define TIFF_STRIPCHOP   0x08000U /* enable strip chopping support */
135 	#define TIFF_HEADERONLY  0x10000U /* read header only, do not process the first directory */
136 	#define TIFF_NOREADRAW   0x20000U /* skip reading of raw uncompressed image data */
137 	#define TIFF_INCUSTOMIFD 0x40000U /* currently writing a custom IFD */
138 	#define TIFF_BIGTIFF     0x80000U /* read/write bigtiff */
139         #define TIFF_BUF4WRITE  0x100000U /* rawcc bytes are for writing */
140         #define TIFF_DIRTYSTRIP 0x200000U /* stripoffsets/stripbytecount dirty*/
141         #define TIFF_PERSAMPLE  0x400000U /* get/set per sample tags as arrays */
142         #define TIFF_BUFFERMMAP 0x800000U /* read buffer (tif_rawdata) points into mmap() memory */
143         #define TIFF_DEFERSTRILELOAD 0x1000000U /* defer strip/tile offset/bytecount array loading. */
144         #define TIFF_LAZYSTRILELOAD  0x2000000U /* lazy/ondemand loading of strip/tile offset/bytecount values. Only used if TIFF_DEFERSTRILELOAD is set and in read-only mode */
145         #define TIFF_CHOPPEDUPARRAYS 0x4000000U /* set when allocChoppedUpStripArrays() has modified strip array */
146 	uint64               tif_diroff;       /* file offset of current directory */
147 	uint64               tif_nextdiroff;   /* file offset of following directory */
148 	uint64*              tif_dirlist;      /* list of offsets to already seen directories to prevent IFD looping */
149 	uint16               tif_dirlistsize;  /* number of entries in offset list */
150 	uint16               tif_dirnumber;    /* number of already seen directories */
151 	TIFFDirectory        tif_dir;          /* internal rep of current directory */
152 	TIFFDirectory        tif_customdir;    /* custom IFDs are separated from the main ones */
153 	union {
154 		TIFFHeaderCommon common;
155 		TIFFHeaderClassic classic;
156 		TIFFHeaderBig big;
157 	} tif_header;
158 	uint16               tif_header_size;  /* file's header block and its length */
159 	uint32               tif_row;          /* current scanline */
160 	uint16               tif_curdir;       /* current directory (index) */
161 	uint32               tif_curstrip;     /* current strip for read/write */
162 	uint64               tif_curoff;       /* current offset for read/write */
163 	uint64               tif_dataoff;      /* current offset for writing dir */
164 	/* SubIFD support */
165 	uint16               tif_nsubifd;      /* remaining subifds to write */
166 	uint64               tif_subifdoff;    /* offset for patching SubIFD link */
167 	/* tiling support */
168 	uint32               tif_col;          /* current column (offset by row too) */
169 	uint32               tif_curtile;      /* current tile for read/write */
170 	tmsize_t             tif_tilesize;     /* # of bytes in a tile */
171 	/* compression scheme hooks */
172 	int                  tif_decodestatus;
173 	TIFFBoolMethod       tif_fixuptags;    /* called in TIFFReadDirectory */
174 	TIFFBoolMethod       tif_setupdecode;  /* called once before predecode */
175 	TIFFPreMethod        tif_predecode;    /* pre- row/strip/tile decoding */
176 	TIFFBoolMethod       tif_setupencode;  /* called once before preencode */
177 	int                  tif_encodestatus;
178 	TIFFPreMethod        tif_preencode;    /* pre- row/strip/tile encoding */
179 	TIFFBoolMethod       tif_postencode;   /* post- row/strip/tile encoding */
180 	TIFFCodeMethod       tif_decoderow;    /* scanline decoding routine */
181 	TIFFCodeMethod       tif_encoderow;    /* scanline encoding routine */
182 	TIFFCodeMethod       tif_decodestrip;  /* strip decoding routine */
183 	TIFFCodeMethod       tif_encodestrip;  /* strip encoding routine */
184 	TIFFCodeMethod       tif_decodetile;   /* tile decoding routine */
185 	TIFFCodeMethod       tif_encodetile;   /* tile encoding routine */
186 	TIFFVoidMethod       tif_close;        /* cleanup-on-close routine */
187 	TIFFSeekMethod       tif_seek;         /* position within a strip routine */
188 	TIFFVoidMethod       tif_cleanup;      /* cleanup state routine */
189 	TIFFStripMethod      tif_defstripsize; /* calculate/constrain strip size */
190 	TIFFTileMethod       tif_deftilesize;  /* calculate/constrain tile size */
191 	uint8*               tif_data;         /* compression scheme private data */
192 	/* input/output buffering */
193 	tmsize_t             tif_scanlinesize; /* # of bytes in a scanline */
194 	tmsize_t             tif_scanlineskew; /* scanline skew for reading strips */
195 	uint8*               tif_rawdata;      /* raw data buffer */
196 	tmsize_t             tif_rawdatasize;  /* # of bytes in raw data buffer */
197         tmsize_t             tif_rawdataoff;   /* rawdata offset within strip */
198         tmsize_t             tif_rawdataloaded;/* amount of data in rawdata */
199 	uint8*               tif_rawcp;        /* current spot in raw buffer */
200 	tmsize_t             tif_rawcc;        /* bytes unread from raw buffer */
201 	/* memory-mapped file support */
202 	uint8*               tif_base;         /* base of mapped file */
203 	tmsize_t             tif_size;         /* size of mapped file region (bytes, thus tmsize_t) */
204 	TIFFMapFileProc      tif_mapproc;      /* map file method */
205 	TIFFUnmapFileProc    tif_unmapproc;    /* unmap file method */
206 	/* input/output callback methods */
207 	thandle_t            tif_clientdata;   /* callback parameter */
208 	TIFFReadWriteProc    tif_readproc;     /* read method */
209 	TIFFReadWriteProc    tif_writeproc;    /* write method */
210 	TIFFSeekProc         tif_seekproc;     /* lseek method */
211 	TIFFCloseProc        tif_closeproc;    /* close method */
212 	TIFFSizeProc         tif_sizeproc;     /* filesize method */
213 	/* post-decoding support */
214 	TIFFPostMethod       tif_postdecode;   /* post decoding routine */
215 	/* tag support */
216 	TIFFField**          tif_fields;       /* sorted table of registered tags */
217 	size_t               tif_nfields;      /* # entries in registered tag table */
218 	const TIFFField*     tif_foundfield;   /* cached pointer to already found tag */
219 	TIFFTagMethods       tif_tagmethods;   /* tag get/set/print routines */
220 	TIFFClientInfoLink*  tif_clientinfo;   /* extra client information. */
221 	/* Backward compatibility stuff. We need these two fields for
222 	 * setting up an old tag extension scheme. */
223 	TIFFFieldArray*      tif_fieldscompat;
224 	size_t               tif_nfieldscompat;
225 };
226 
227 #define isPseudoTag(t) (t > 0xffff)            /* is tag value normal or pseudo */
228 
229 #define isTiled(tif) (((tif)->tif_flags & TIFF_ISTILED) != 0)
230 #define isMapped(tif) (((tif)->tif_flags & TIFF_MAPPED) != 0)
231 #define isFillOrder(tif, o) (((tif)->tif_flags & (o)) != 0)
232 #define isUpSampled(tif) (((tif)->tif_flags & TIFF_UPSAMPLED) != 0)
233 #define TIFFReadFile(tif, buf, size) \
234 	((*(tif)->tif_readproc)((tif)->tif_clientdata,(buf),(size)))
235 #define TIFFWriteFile(tif, buf, size) \
236 	((*(tif)->tif_writeproc)((tif)->tif_clientdata,(buf),(size)))
237 #define TIFFSeekFile(tif, off, whence) \
238 	((*(tif)->tif_seekproc)((tif)->tif_clientdata,(off),(whence)))
239 #define TIFFCloseFile(tif) \
240 	((*(tif)->tif_closeproc)((tif)->tif_clientdata))
241 #define TIFFGetFileSize(tif) \
242 	((*(tif)->tif_sizeproc)((tif)->tif_clientdata))
243 #define TIFFMapFileContents(tif, paddr, psize) \
244 	((*(tif)->tif_mapproc)((tif)->tif_clientdata,(paddr),(psize)))
245 #define TIFFUnmapFileContents(tif, addr, size) \
246 	((*(tif)->tif_unmapproc)((tif)->tif_clientdata,(addr),(size)))
247 
248 /*
249  * Default Read/Seek/Write definitions.
250  */
251 #ifndef ReadOK
252 #define ReadOK(tif, buf, size) \
253 	(TIFFReadFile((tif),(buf),(size))==(size))
254 #endif
255 #ifndef SeekOK
256 #define SeekOK(tif, off) _TIFFSeekOK(tif, off)
257 #endif
258 #ifndef WriteOK
259 #define WriteOK(tif, buf, size) \
260 	(TIFFWriteFile((tif),(buf),(size))==(size))
261 #endif
262 
263 /* NB: the uint32 casts are to silence certain ANSI-C compilers */
264 #define TIFFhowmany_32(x, y) (((uint32)x < (0xffffffff - (uint32)(y-1))) ? \
265 			   ((((uint32)(x))+(((uint32)(y))-1))/((uint32)(y))) : \
266 			   0U)
267 /* Variant of TIFFhowmany_32() that doesn't return 0 if x close to MAXUINT. */
268 /* Caution: TIFFhowmany_32_maxuint_compat(x,y)*y might overflow */
269 #define TIFFhowmany_32_maxuint_compat(x, y) \
270 			   (((uint32)(x) / (uint32)(y)) + ((((uint32)(x) % (uint32)(y)) != 0) ? 1 : 0))
271 #define TIFFhowmany8_32(x) (((x)&0x07)?((uint32)(x)>>3)+1:(uint32)(x)>>3)
272 #define TIFFroundup_32(x, y) (TIFFhowmany_32(x,y)*(y))
273 #define TIFFhowmany_64(x, y) ((((uint64)(x))+(((uint64)(y))-1))/((uint64)(y)))
274 #define TIFFhowmany8_64(x) (((x)&0x07)?((uint64)(x)>>3)+1:(uint64)(x)>>3)
275 #define TIFFroundup_64(x, y) (TIFFhowmany_64(x,y)*(y))
276 
277 /* Safe multiply which returns zero if there is an *unsigned* integer overflow. This macro is not safe for *signed* integer types */
278 #define TIFFSafeMultiply(t,v,m) ((((t)(m) != (t)0) && (((t)(((v)*(m))/(m))) == (t)(v))) ? (t)((v)*(m)) : (t)0)
279 
280 #define TIFFmax(A,B) ((A)>(B)?(A):(B))
281 #define TIFFmin(A,B) ((A)<(B)?(A):(B))
282 
283 #define TIFFArrayCount(a) (sizeof (a) / sizeof ((a)[0]))
284 
285 /*
286   Support for large files.
287 
288   Windows read/write APIs support only 'unsigned int' rather than 'size_t'.
289   Windows off_t is only 32-bit, even in 64-bit builds.
290 */
291 #if defined(HAVE_FSEEKO)
292 /*
293   Use fseeko() and ftello() if they are available since they use
294   'off_t' rather than 'long'.  It is wrong to use fseeko() and
295   ftello() only on systems with special LFS support since some systems
296   (e.g. FreeBSD) support a 64-bit off_t by default.
297 
298   For MinGW, __MSVCRT_VERSION__ must be at least 0x800 to expose these
299   interfaces. The MinGW compiler must support the requested version.  MinGW
300   does not distribute the CRT (it is supplied by Microsoft) so the correct CRT
301   must be available on the target computer in order for the program to run.
302 */
303 #if defined(HAVE_FSEEKO)
304 #  define fseek(stream,offset,whence)  fseeko(stream,offset,whence)
305 #  define ftell(stream,offset,whence)  ftello(stream,offset,whence)
306 #endif
307 #endif
308 #if defined(__WIN32__) && \
309         !(defined(_MSC_VER) && _MSC_VER < 1400) && \
310         !(defined(__MSVCRT_VERSION__) && __MSVCRT_VERSION__ < 0x800)
311 typedef unsigned int TIFFIOSize_t;
312 #define _TIFF_lseek_f(fildes,offset,whence)  _lseeki64(fildes,/* __int64 */ offset,whence)
313 /* #define _TIFF_tell_f(fildes) /\* __int64 *\/ _telli64(fildes) */
314 #define _TIFF_fseek_f(stream,offset,whence) _fseeki64(stream,/* __int64 */ offset,whence)
315 #define _TIFF_fstat_f(fildes,stat_buff) _fstati64(fildes,/* struct _stati64 */ stat_buff)
316 /* #define _TIFF_ftell_f(stream) /\* __int64 *\/ _ftelli64(stream) */
317 /* #define _TIFF_stat_f(path,stat_buff) _stati64(path,/\* struct _stati64 *\/ stat_buff) */
318 #define _TIFF_stat_s struct _stati64
319 #define _TIFF_off_t __int64
320 #else
321 typedef size_t TIFFIOSize_t;
322 #define _TIFF_lseek_f(fildes,offset,whence) lseek(fildes,offset,whence)
323 /* #define _TIFF_tell_f(fildes) (_TIFF_lseek_f(fildes,0,SEEK_CUR)) */
324 #define _TIFF_fseek_f(stream,offset,whence) fseek(stream,offset,whence)
325 #define _TIFF_fstat_f(fildes,stat_buff) fstat(fildes,stat_buff)
326 /* #define _TIFF_ftell_f(stream) ftell(stream) */
327 /* #define _TIFF_stat_f(path,stat_buff) stat(path,stat_buff) */
328 #define _TIFF_stat_s struct stat
329 #define _TIFF_off_t off_t
330 #endif
331 
332 #if defined(__has_attribute) && defined(__clang__)
333 #if __has_attribute(no_sanitize)
334 #define TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW __attribute__((no_sanitize("unsigned-integer-overflow")))
335 #else
336 #define TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
337 #endif
338 #else
339 #define TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW
340 #endif
341 
342 
343 #if defined(__cplusplus)
344 extern "C" {
345 #endif
346 extern int _TIFFgetMode(const char* mode, const char* module);
347 extern int _TIFFNoRowEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
348 extern int _TIFFNoStripEncode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
349 extern int _TIFFNoTileEncode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
350 extern int _TIFFNoRowDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
351 extern int _TIFFNoStripDecode(TIFF* tif, uint8* pp, tmsize_t cc, uint16 s);
352 extern int _TIFFNoTileDecode(TIFF*, uint8* pp, tmsize_t cc, uint16 s);
353 extern void _TIFFNoPostDecode(TIFF* tif, uint8* buf, tmsize_t cc);
354 extern int _TIFFNoPreCode(TIFF* tif, uint16 s);
355 extern int _TIFFNoSeek(TIFF* tif, uint32 off);
356 extern void _TIFFSwab16BitData(TIFF* tif, uint8* buf, tmsize_t cc);
357 extern void _TIFFSwab24BitData(TIFF* tif, uint8* buf, tmsize_t cc);
358 extern void _TIFFSwab32BitData(TIFF* tif, uint8* buf, tmsize_t cc);
359 extern void _TIFFSwab64BitData(TIFF* tif, uint8* buf, tmsize_t cc);
360 extern int TIFFFlushData1(TIFF* tif);
361 extern int TIFFDefaultDirectory(TIFF* tif);
362 extern void _TIFFSetDefaultCompressionState(TIFF* tif);
363 extern int _TIFFRewriteField(TIFF *, uint16, TIFFDataType, tmsize_t, void *);
364 extern int TIFFSetCompressionScheme(TIFF* tif, int scheme);
365 extern int TIFFSetDefaultCompressionState(TIFF* tif);
366 extern uint32 _TIFFDefaultStripSize(TIFF* tif, uint32 s);
367 extern void _TIFFDefaultTileSize(TIFF* tif, uint32* tw, uint32* th);
368 extern int _TIFFDataSize(TIFFDataType type);
369 
370 extern void _TIFFsetByteArray(void**, void*, uint32);
371 extern void _TIFFsetString(char**, char*);
372 extern void _TIFFsetShortArray(uint16**, uint16*, uint32);
373 extern void _TIFFsetLongArray(uint32**, uint32*, uint32);
374 extern void _TIFFsetFloatArray(float**, float*, uint32);
375 extern void _TIFFsetDoubleArray(double**, double*, uint32);
376 
377 extern void _TIFFprintAscii(FILE*, const char*);
378 extern void _TIFFprintAsciiTag(FILE*, const char*, const char*);
379 
380 extern TIFFErrorHandler _TIFFwarningHandler;
381 extern TIFFErrorHandler _TIFFerrorHandler;
382 extern TIFFErrorHandlerExt _TIFFwarningHandlerExt;
383 extern TIFFErrorHandlerExt _TIFFerrorHandlerExt;
384 
385 extern uint32 _TIFFMultiply32(TIFF*, uint32, uint32, const char*);
386 extern uint64 _TIFFMultiply64(TIFF*, uint64, uint64, const char*);
387 extern tmsize_t _TIFFMultiplySSize(TIFF*, tmsize_t, tmsize_t, const char*);
388 extern tmsize_t _TIFFCastUInt64ToSSize(TIFF*, uint64, const char*);
389 extern void* _TIFFCheckMalloc(TIFF*, tmsize_t, tmsize_t, const char*);
390 extern void* _TIFFCheckRealloc(TIFF*, void*, tmsize_t, tmsize_t, const char*);
391 
392 extern double _TIFFUInt64ToDouble(uint64);
393 extern float _TIFFUInt64ToFloat(uint64);
394 
395 extern float _TIFFClampDoubleToFloat(double);
396 
397 extern tmsize_t
398 _TIFFReadEncodedStripAndAllocBuffer(TIFF* tif, uint32 strip,
399                                     void **buf, tmsize_t bufsizetoalloc,
400                                     tmsize_t size_to_read);
401 extern tmsize_t
402 _TIFFReadEncodedTileAndAllocBuffer(TIFF* tif, uint32 tile,
403                                     void **buf, tmsize_t bufsizetoalloc,
404                                     tmsize_t size_to_read);
405 extern tmsize_t
406 _TIFFReadTileAndAllocBuffer(TIFF* tif,
407                             void **buf, tmsize_t bufsizetoalloc,
408                             uint32 x, uint32 y, uint32 z, uint16 s);
409 extern int _TIFFSeekOK(TIFF* tif, toff_t off);
410 
411 extern int TIFFInitDumpMode(TIFF*, int);
412 #ifdef PACKBITS_SUPPORT
413 extern int TIFFInitPackBits(TIFF*, int);
414 #endif
415 #ifdef CCITT_SUPPORT
416 extern int TIFFInitCCITTRLE(TIFF*, int), TIFFInitCCITTRLEW(TIFF*, int);
417 extern int TIFFInitCCITTFax3(TIFF*, int), TIFFInitCCITTFax4(TIFF*, int);
418 #endif
419 #ifdef THUNDER_SUPPORT
420 extern int TIFFInitThunderScan(TIFF*, int);
421 #endif
422 #ifdef NEXT_SUPPORT
423 extern int TIFFInitNeXT(TIFF*, int);
424 #endif
425 #ifdef LZW_SUPPORT
426 extern int TIFFInitLZW(TIFF*, int);
427 #endif
428 #ifdef OJPEG_SUPPORT
429 extern int TIFFInitOJPEG(TIFF*, int);
430 #endif
431 #ifdef JPEG_SUPPORT
432 extern int TIFFInitJPEG(TIFF*, int);
433 extern int TIFFJPEGIsFullStripRequired(TIFF*);
434 #endif
435 #ifdef JBIG_SUPPORT
436 extern int TIFFInitJBIG(TIFF*, int);
437 #endif
438 #ifdef ZIP_SUPPORT
439 extern int TIFFInitZIP(TIFF*, int);
440 #endif
441 #ifdef PIXARLOG_SUPPORT
442 extern int TIFFInitPixarLog(TIFF*, int);
443 #endif
444 #ifdef LOGLUV_SUPPORT
445 extern int TIFFInitSGILog(TIFF*, int);
446 #endif
447 #ifdef LZMA_SUPPORT
448 extern int TIFFInitLZMA(TIFF*, int);
449 #endif
450 #ifdef ZSTD_SUPPORT
451 extern int TIFFInitZSTD(TIFF*, int);
452 #endif
453 #ifdef WEBP_SUPPORT
454 extern int TIFFInitWebP(TIFF*, int);
455 #endif
456 #ifdef VMS
457 extern const TIFFCodec _TIFFBuiltinCODECS[];
458 #else
459 extern TIFFCodec _TIFFBuiltinCODECS[];
460 #endif
461 
462 #if defined(__cplusplus)
463 }
464 #endif
465 #endif /* _TIFFIOP_ */
466 
467 /* vim: set ts=8 sts=8 sw=8 noet: */
468 /*
469  * Local Variables:
470  * mode: c
471  * c-basic-offset: 8
472  * fill-column: 78
473  * End:
474  */
475