Mercurial > mm7

comparison lib/libpng/pngconf.h @ 2297:5e2e171c6911

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
wow
author Ritor1
date Mon, 17 Mar 2014 01:22:20 +0600
parents
children
comparison
equal deleted inserted replaced
2296:6e178010fc29 2297:5e2e171c6911
1
2 /* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.6.10 - March 6, 2014
5 *
6 * Copyright (c) 1998-2013 Glenn Randers-Pehrson
7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9 *
10 * This code is released under the libpng license.
11 * For conditions of distribution and use, see the disclaimer
12 * and license in png.h
13 *
14 */
15
16 /* Any machine specific code is near the front of this file, so if you
17 * are configuring libpng for a machine, you may want to read the section
18 * starting here down to where it starts to typedef png_color, png_text,
19 * and png_info.
20 */
21
22 #ifndef PNGCONF_H
23 #define PNGCONF_H
24
25 /* To do: Do all of this in scripts/pnglibconf.dfa */
26 #ifdef PNG_SAFE_LIMITS_SUPPORTED
27 # ifdef PNG_USER_WIDTH_MAX
28 # undef PNG_USER_WIDTH_MAX
29 # define PNG_USER_WIDTH_MAX 1000000L
30 # endif
31 # ifdef PNG_USER_HEIGHT_MAX
32 # undef PNG_USER_HEIGHT_MAX
33 # define PNG_USER_HEIGHT_MAX 1000000L
34 # endif
35 # ifdef PNG_USER_CHUNK_MALLOC_MAX
36 # undef PNG_USER_CHUNK_MALLOC_MAX
37 # define PNG_USER_CHUNK_MALLOC_MAX 4000000L
38 # endif
39 # ifdef PNG_USER_CHUNK_CACHE_MAX
40 # undef PNG_USER_CHUNK_CACHE_MAX
41 # define PNG_USER_CHUNK_CACHE_MAX 128
42 # endif
43 #endif
44
45 #ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
46
47 /* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
48 * compiler for correct compilation. The following header files are required by
49 * the standard. If your compiler doesn't provide these header files, or they
50 * do not match the standard, you will need to provide/improve them.
51 */
52 #include <limits.h>
53 #include <stddef.h>
54
55 /* Library header files. These header files are all defined by ISOC90; libpng
56 * expects conformant implementations, however, an ISOC90 conformant system need
57 * not provide these header files if the functionality cannot be implemented.
58 * In this case it will be necessary to disable the relevant parts of libpng in
59 * the build of pnglibconf.h.
60 *
61 * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
62 * include this unnecessary header file.
63 */
64
65 #ifdef PNG_STDIO_SUPPORTED
66 /* Required for the definition of FILE: */
67 # include <stdio.h>
68 #endif
69
70 #ifdef PNG_SETJMP_SUPPORTED
71 /* Required for the definition of jmp_buf and the declaration of longjmp: */
72 # include <setjmp.h>
73 #endif
74
75 #ifdef PNG_CONVERT_tIME_SUPPORTED
76 /* Required for struct tm: */
77 # include <time.h>
78 #endif
79
80 #endif /* PNG_BUILDING_SYMBOL_TABLE */
81
82 /* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
83 * PNG_NO_CONST; this is no longer supported except for data declarations which
84 * apparently still cause problems in 2011 on some compilers.
85 */
86 #define PNG_CONST const /* backward compatibility only */
87
88 /* This controls optimization of the reading of 16 and 32 bit values
89 * from PNG files. It can be set on a per-app-file basis - it
90 * just changes whether a macro is used when the function is called.
91 * The library builder sets the default; if read functions are not
92 * built into the library the macro implementation is forced on.
93 */
94 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
95 # define PNG_USE_READ_MACROS
96 #endif
97 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
98 # if PNG_DEFAULT_READ_MACROS
99 # define PNG_USE_READ_MACROS
100 # endif
101 #endif
102
103 /* COMPILER SPECIFIC OPTIONS.
104 *
105 * These options are provided so that a variety of difficult compilers
106 * can be used. Some are fixed at build time (e.g. PNG_API_RULE
107 * below) but still have compiler specific implementations, others
108 * may be changed on a per-file basis when compiling against libpng.
109 */
110
111 /* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
112 * against legacy (pre ISOC90) compilers that did not understand function
113 * prototypes. It is not required for modern C compilers.
114 */
115 #ifndef PNGARG
116 # define PNGARG(arglist) arglist
117 #endif
118
119 /* Function calling conventions.
120 * =============================
121 * Normally it is not necessary to specify to the compiler how to call
122 * a function - it just does it - however on x86 systems derived from
123 * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
124 * and some others) there are multiple ways to call a function and the
125 * default can be changed on the compiler command line. For this reason
126 * libpng specifies the calling convention of every exported function and
127 * every function called via a user supplied function pointer. This is
128 * done in this file by defining the following macros:
129 *
130 * PNGAPI Calling convention for exported functions.
131 * PNGCBAPI Calling convention for user provided (callback) functions.
132 * PNGCAPI Calling convention used by the ANSI-C library (required
133 * for longjmp callbacks and sometimes used internally to
134 * specify the calling convention for zlib).
135 *
136 * These macros should never be overridden. If it is necessary to
137 * change calling convention in a private build this can be done
138 * by setting PNG_API_RULE (which defaults to 0) to one of the values
139 * below to select the correct 'API' variants.
140 *
141 * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
142 * This is correct in every known environment.
143 * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
144 * the 'C' calling convention (from PNGCAPI) for
145 * callbacks (PNGCBAPI). This is no longer required
146 * in any known environment - if it has to be used
147 * please post an explanation of the problem to the
148 * libpng mailing list.
149 *
150 * These cases only differ if the operating system does not use the C
151 * calling convention, at present this just means the above cases
152 * (x86 DOS/Windows sytems) and, even then, this does not apply to
153 * Cygwin running on those systems.
154 *
155 * Note that the value must be defined in pnglibconf.h so that what
156 * the application uses to call the library matches the conventions
157 * set when building the library.
158 */
159
160 /* Symbol export
161 * =============
162 * When building a shared library it is almost always necessary to tell
163 * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
164 * is used to mark the symbols. On some systems these symbols can be
165 * extracted at link time and need no special processing by the compiler,
166 * on other systems the symbols are flagged by the compiler and just
167 * the declaration requires a special tag applied (unfortunately) in a
168 * compiler dependent way. Some systems can do either.
169 *
170 * A small number of older systems also require a symbol from a DLL to
171 * be flagged to the program that calls it. This is a problem because
172 * we do not know in the header file included by application code that
173 * the symbol will come from a shared library, as opposed to a statically
174 * linked one. For this reason the application must tell us by setting
175 * the magic flag PNG_USE_DLL to turn on the special processing before
176 * it includes png.h.
177 *
178 * Four additional macros are used to make this happen:
179 *
180 * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
181 * the build or imported if PNG_USE_DLL is set - compiler
182 * and system specific.
183 *
184 * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
185 * 'type', compiler specific.
186 *
187 * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
188 * make a symbol exported from the DLL. Not used in the
189 * public header files; see pngpriv.h for how it is used
190 * in the libpng build.
191 *
192 * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
193 * from a DLL - used to define PNG_IMPEXP when
194 * PNG_USE_DLL is set.
195 */
196
197 /* System specific discovery.
198 * ==========================
199 * This code is used at build time to find PNG_IMPEXP, the API settings
200 * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
201 * import processing is possible. On Windows systems it also sets
202 * compiler-specific macros to the values required to change the calling
203 * conventions of the various functions.
204 */
205 #if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
206 defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
207 /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
208 * MinGW on any architecture currently supported by Windows. Also includes
209 * Watcom builds but these need special treatment because they are not
210 * compatible with GCC or Visual C because of different calling conventions.
211 */
212 # if PNG_API_RULE == 2
213 /* If this line results in an error, either because __watcall is not
214 * understood or because of a redefine just below you cannot use *this*
215 * build of the library with the compiler you are using. *This* build was
216 * build using Watcom and applications must also be built using Watcom!
217 */
218 # define PNGCAPI __watcall
219 # endif
220
221 # if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
222 # define PNGCAPI __cdecl
223 # if PNG_API_RULE == 1
224 /* If this line results in an error __stdcall is not understood and
225 * PNG_API_RULE should not have been set to '1'.
226 */
227 # define PNGAPI __stdcall
228 # endif
229 # else
230 /* An older compiler, or one not detected (erroneously) above,
231 * if necessary override on the command line to get the correct
232 * variants for the compiler.
233 */
234 # ifndef PNGCAPI
235 # define PNGCAPI _cdecl
236 # endif
237 # if PNG_API_RULE == 1 && !defined(PNGAPI)
238 # define PNGAPI _stdcall
239 # endif
240 # endif /* compiler/api */
241
242 /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
243
244 # if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
245 # error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
246 # endif
247
248 # if (defined(_MSC_VER) && _MSC_VER < 800) ||\
249 (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
250 /* older Borland and MSC
251 * compilers used '__export' and required this to be after
252 * the type.
253 */
254 # ifndef PNG_EXPORT_TYPE
255 # define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
256 # endif
257 # define PNG_DLL_EXPORT __export
258 # else /* newer compiler */
259 # define PNG_DLL_EXPORT __declspec(dllexport)
260 # ifndef PNG_DLL_IMPORT
261 # define PNG_DLL_IMPORT __declspec(dllimport)
262 # endif
263 # endif /* compiler */
264
265 #else /* !Windows */
266 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
267 # define PNGAPI _System
268 # else /* !Windows/x86 && !OS/2 */
269 /* Use the defaults, or define PNG*API on the command line (but
270 * this will have to be done for every compile!)
271 */
272 # endif /* other system, !OS/2 */
273 #endif /* !Windows/x86 */
274
275 /* Now do all the defaulting . */
276 #ifndef PNGCAPI
277 # define PNGCAPI
278 #endif
279 #ifndef PNGCBAPI
280 # define PNGCBAPI PNGCAPI
281 #endif
282 #ifndef PNGAPI
283 # define PNGAPI PNGCAPI
284 #endif
285
286 /* PNG_IMPEXP may be set on the compilation system command line or (if not set)
287 * then in an internal header file when building the library, otherwise (when
288 * using the library) it is set here.
289 */
290 #ifndef PNG_IMPEXP
291 # if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
292 /* This forces use of a DLL, disallowing static linking */
293 # define PNG_IMPEXP PNG_DLL_IMPORT
294 # endif
295
296 # ifndef PNG_IMPEXP
297 # define PNG_IMPEXP
298 # endif
299 #endif
300
301 /* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
302 * 'attributes' as a storage class - the attributes go at the start of the
303 * function definition, and attributes are always appended regardless of the
304 * compiler. This considerably simplifies these macros but may cause problems
305 * if any compilers both need function attributes and fail to handle them as
306 * a storage class (this is unlikely.)
307 */
308 #ifndef PNG_FUNCTION
309 # define PNG_FUNCTION(type, name, args, attributes) attributes type name args
310 #endif
311
312 #ifndef PNG_EXPORT_TYPE
313 # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
314 #endif
315
316 /* The ordinal value is only relevant when preprocessing png.h for symbol
317 * table entries, so we discard it here. See the .dfn files in the
318 * scripts directory.
319 */
320 #ifndef PNG_EXPORTA
321
322 # define PNG_EXPORTA(ordinal, type, name, args, attributes)\
323 PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
324 extern attributes)
325 #endif
326
327 /* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
328 * so make something non-empty to satisfy the requirement:
329 */
330 #define PNG_EMPTY /*empty list*/
331
332 #define PNG_EXPORT(ordinal, type, name, args)\
333 PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
334
335 /* Use PNG_REMOVED to comment out a removed interface. */
336 #ifndef PNG_REMOVED
337 # define PNG_REMOVED(ordinal, type, name, args, attributes)
338 #endif
339
340 #ifndef PNG_CALLBACK
341 # define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
342 #endif
343
344 /* Support for compiler specific function attributes. These are used
345 * so that where compiler support is available incorrect use of API
346 * functions in png.h will generate compiler warnings.
347 *
348 * Added at libpng-1.2.41.
349 */
350
351 #ifndef PNG_NO_PEDANTIC_WARNINGS
352 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
353 # define PNG_PEDANTIC_WARNINGS_SUPPORTED
354 # endif
355 #endif
356
357 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
358 /* Support for compiler specific function attributes. These are used
359 * so that where compiler support is available, incorrect use of API
360 * functions in png.h will generate compiler warnings. Added at libpng
361 * version 1.2.41. Disabling these removes the warnings but may also produce
362 * less efficient code.
363 */
364 # if defined(__clang__)
365 /* Clang defines both __clang__ and __GNUC__. Check __clang__ first. */
366 # if !defined(PNG_USE_RESULT) && __has_attribute(__warn_unused_result__)
367 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
368 # endif
369 # if !defined(PNG_NORETURN) && __has_attribute(__noreturn__)
370 # define PNG_NORETURN __attribute__((__noreturn__))
371 # endif
372 # if !defined(PNG_ALLOCATED) && __has_attribute(__malloc__)
373 # define PNG_ALLOCATED __attribute__((__malloc__))
374 # endif
375 # if !defined(PNG_DEPRECATED) && __has_attribute(__deprecated__)
376 # define PNG_DEPRECATED __attribute__((__deprecated__))
377 # endif
378 # if !defined(PNG_PRIVATE)
379 # ifdef __has_extension
380 # if __has_extension(attribute_unavailable_with_message)
381 # define PNG_PRIVATE __attribute__((__unavailable__(\
382 "This function is not exported by libpng.")))
383 # endif
384 # endif
385 # endif
386 # ifndef PNG_RESTRICT
387 # define PNG_RESTRICT __restrict
388 # endif
389
390 # elif defined(__GNUC__)
391 # ifndef PNG_USE_RESULT
392 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
393 # endif
394 # ifndef PNG_NORETURN
395 # define PNG_NORETURN __attribute__((__noreturn__))
396 # endif
397 # if __GNUC__ >= 3
398 # ifndef PNG_ALLOCATED
399 # define PNG_ALLOCATED __attribute__((__malloc__))
400 # endif
401 # ifndef PNG_DEPRECATED
402 # define PNG_DEPRECATED __attribute__((__deprecated__))
403 # endif
404 # ifndef PNG_PRIVATE
405 # if 0 /* Doesn't work so we use deprecated instead*/
406 # define PNG_PRIVATE \
407 __attribute__((warning("This function is not exported by libpng.")))
408 # else
409 # define PNG_PRIVATE \
410 __attribute__((__deprecated__))
411 # endif
412 # endif
413 # if ((__GNUC__ > 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
414 # ifndef PNG_RESTRICT
415 # define PNG_RESTRICT __restrict
416 # endif
417 # endif /* __GNUC__.__GNUC_MINOR__ > 3.0 */
418 # endif /* __GNUC__ >= 3 */
419
420 # elif defined(_MSC_VER) && (_MSC_VER >= 1300)
421 # ifndef PNG_USE_RESULT
422 # define PNG_USE_RESULT /* not supported */
423 # endif
424 # ifndef PNG_NORETURN
425 # define PNG_NORETURN __declspec(noreturn)
426 # endif
427 # ifndef PNG_ALLOCATED
428 # if (_MSC_VER >= 1400)
429 # define PNG_ALLOCATED __declspec(restrict)
430 # endif
431 # endif
432 # ifndef PNG_DEPRECATED
433 # define PNG_DEPRECATED __declspec(deprecated)
434 # endif
435 # ifndef PNG_PRIVATE
436 # define PNG_PRIVATE __declspec(deprecated)
437 # endif
438 # ifndef PNG_RESTRICT
439 # if (_MSC_VER >= 1400)
440 # define PNG_RESTRICT __restrict
441 # endif
442 # endif
443
444 # elif defined(__WATCOMC__)
445 # ifndef PNG_RESTRICT
446 # define PNG_RESTRICT __restrict
447 # endif
448 # endif
449 #endif /* PNG_PEDANTIC_WARNINGS */
450
451 #ifndef PNG_DEPRECATED
452 # define PNG_DEPRECATED /* Use of this function is deprecated */
453 #endif
454 #ifndef PNG_USE_RESULT
455 # define PNG_USE_RESULT /* The result of this function must be checked */
456 #endif
457 #ifndef PNG_NORETURN
458 # define PNG_NORETURN /* This function does not return */
459 #endif
460 #ifndef PNG_ALLOCATED
461 # define PNG_ALLOCATED /* The result of the function is new memory */
462 #endif
463 #ifndef PNG_PRIVATE
464 # define PNG_PRIVATE /* This is a private libpng function */
465 #endif
466 #ifndef PNG_RESTRICT
467 # define PNG_RESTRICT /* The C99 "restrict" feature */
468 #endif
469
470 #ifndef PNG_FP_EXPORT /* A floating point API. */
471 # ifdef PNG_FLOATING_POINT_SUPPORTED
472 # define PNG_FP_EXPORT(ordinal, type, name, args)\
473 PNG_EXPORT(ordinal, type, name, args);
474 # else /* No floating point APIs */
475 # define PNG_FP_EXPORT(ordinal, type, name, args)
476 # endif
477 #endif
478 #ifndef PNG_FIXED_EXPORT /* A fixed point API. */
479 # ifdef PNG_FIXED_POINT_SUPPORTED
480 # define PNG_FIXED_EXPORT(ordinal, type, name, args)\
481 PNG_EXPORT(ordinal, type, name, args);
482 # else /* No fixed point APIs */
483 # define PNG_FIXED_EXPORT(ordinal, type, name, args)
484 # endif
485 #endif
486
487 #ifndef PNG_BUILDING_SYMBOL_TABLE
488 /* Some typedefs to get us started. These should be safe on most of the common
489 * platforms.
490 *
491 * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
492 * 32-bit value however this is not normally advisable.
493 *
494 * png_uint_16 and png_int_16 should always be two bytes in size - this is
495 * verified at library build time.
496 *
497 * png_byte must always be one byte in size.
498 *
499 * The checks below use constants from limits.h, as defined by the ISOC90
500 * standard.
501 */
502 #if CHAR_BIT == 8 && UCHAR_MAX == 255
503 typedef unsigned char png_byte;
504 #else
505 # error "libpng requires 8 bit bytes"
506 #endif
507
508 #if INT_MIN == -32768 && INT_MAX == 32767
509 typedef int png_int_16;
510 #elif SHRT_MIN == -32768 && SHRT_MAX == 32767
511 typedef short png_int_16;
512 #else
513 # error "libpng requires a signed 16 bit type"
514 #endif
515
516 #if UINT_MAX == 65535
517 typedef unsigned int png_uint_16;
518 #elif USHRT_MAX == 65535
519 typedef unsigned short png_uint_16;
520 #else
521 # error "libpng requires an unsigned 16 bit type"
522 #endif
523
524 #if INT_MIN < -2147483646 && INT_MAX > 2147483646
525 typedef int png_int_32;
526 #elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
527 typedef long int png_int_32;
528 #else
529 # error "libpng requires a signed 32 bit (or more) type"
530 #endif
531
532 #if UINT_MAX > 4294967294
533 typedef unsigned int png_uint_32;
534 #elif ULONG_MAX > 4294967294
535 typedef unsigned long int png_uint_32;
536 #else
537 # error "libpng requires an unsigned 32 bit (or more) type"
538 #endif
539
540 /* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
541 * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
542 */
543 typedef size_t png_size_t;
544 typedef ptrdiff_t png_ptrdiff_t;
545
546 /* libpng needs to know the maximum value of 'size_t' and this controls the
547 * definition of png_alloc_size_t, below. This maximum value of size_t limits
548 * but does not control the maximum allocations the library makes - there is
549 * direct application control of this through png_set_user_limits().
550 */
551 #ifndef PNG_SMALL_SIZE_T
552 /* Compiler specific tests for systems where size_t is known to be less than
553 * 32 bits (some of these systems may no longer work because of the lack of
554 * 'far' support; see above.)
555 */
556 # if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
557 (defined(_MSC_VER) && defined(MAXSEG_64K))
558 # define PNG_SMALL_SIZE_T
559 # endif
560 #endif
561
562 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
563 * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to
564 * png_alloc_size_t are not necessary; in fact, it is recommended not to use
565 * them at all so that the compiler can complain when something turns out to be
566 * problematic.
567 *
568 * Casts in the other direction (from png_alloc_size_t to png_size_t or
569 * png_uint_32) should be explicitly applied; however, we do not expect to
570 * encounter practical situations that require such conversions.
571 *
572 * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
573 * 4294967295 - i.e. less than the maximum value of png_uint_32.
574 */
575 #ifdef PNG_SMALL_SIZE_T
576 typedef png_uint_32 png_alloc_size_t;
577 #else
578 typedef png_size_t png_alloc_size_t;
579 #endif
580
581 /* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
582 * implementations of Intel CPU specific support of user-mode segmented address
583 * spaces, where 16-bit pointers address more than 65536 bytes of memory using
584 * separate 'segment' registers. The implementation requires two different
585 * types of pointer (only one of which includes the segment value.)
586 *
587 * If required this support is available in version 1.2 of libpng and may be
588 * available in versions through 1.5, although the correctness of the code has
589 * not been verified recently.
590 */
591
592 /* Typedef for floating-point numbers that are converted to fixed-point with a
593 * multiple of 100,000, e.g., gamma
594 */
595 typedef png_int_32 png_fixed_point;
596
597 /* Add typedefs for pointers */
598 typedef void * png_voidp;
599 typedef const void * png_const_voidp;
600 typedef png_byte * png_bytep;
601 typedef const png_byte * png_const_bytep;
602 typedef png_uint_32 * png_uint_32p;
603 typedef const png_uint_32 * png_const_uint_32p;
604 typedef png_int_32 * png_int_32p;
605 typedef const png_int_32 * png_const_int_32p;
606 typedef png_uint_16 * png_uint_16p;
607 typedef const png_uint_16 * png_const_uint_16p;
608 typedef png_int_16 * png_int_16p;
609 typedef const png_int_16 * png_const_int_16p;
610 typedef char * png_charp;
611 typedef const char * png_const_charp;
612 typedef png_fixed_point * png_fixed_point_p;
613 typedef const png_fixed_point * png_const_fixed_point_p;
614 typedef png_size_t * png_size_tp;
615 typedef const png_size_t * png_const_size_tp;
616
617 #ifdef PNG_STDIO_SUPPORTED
618 typedef FILE * png_FILE_p;
619 #endif
620
621 #ifdef PNG_FLOATING_POINT_SUPPORTED
622 typedef double * png_doublep;
623 typedef const double * png_const_doublep;
624 #endif
625
626 /* Pointers to pointers; i.e. arrays */
627 typedef png_byte * * png_bytepp;
628 typedef png_uint_32 * * png_uint_32pp;
629 typedef png_int_32 * * png_int_32pp;
630 typedef png_uint_16 * * png_uint_16pp;
631 typedef png_int_16 * * png_int_16pp;
632 typedef const char * * png_const_charpp;
633 typedef char * * png_charpp;
634 typedef png_fixed_point * * png_fixed_point_pp;
635 #ifdef PNG_FLOATING_POINT_SUPPORTED
636 typedef double * * png_doublepp;
637 #endif
638
639 /* Pointers to pointers to pointers; i.e., pointer to array */
640 typedef char * * * png_charppp;
641
642 #endif /* PNG_BUILDING_SYMBOL_TABLE */
643
644 #endif /* PNGCONF_H */