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pngconf.h
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1
2 /* pngconf.h - machine configurable file for libpng
3 *
4 * libpng version 1.5.1 - February 3, 2011
5 *
6 * Copyright (c) 1998-2011 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 /* PNG_NO_LIMITS_H may be used to turn off the use of the standard C
26 * definition file for machine specific limits, this may impact the
27 * correctness of the definitons below (see uses of INT_MAX).
28 */
29 #ifndef PNG_NO_LIMITS_H
30 # include <limits.h>
31 #endif
32
33 /* For the memory copy APIs (i.e. the standard definitions of these),
34 * because this file defines png_memcpy and so on the base APIs must
35 * be defined here.
36 */
37 #ifdef BSD
38 # include <strings.h>
39 #else
40 # include <string.h>
41 #endif
42
43 /* For png_FILE_p - this provides the standard definition of a
44 * FILE
45 */
46 #ifdef PNG_STDIO_SUPPORTED
47 # include <stdio.h>
48 #endif
49
50 /* This controls optimization of the reading of 16 and 32 bit values
51 * from PNG files. It can be set on a per-app-file basis - it
52 * just changes whether a macro is used to the function is called.
53 * The library builder sets the default, if read functions are not
54 * built into the library the macro implementation is forced on.
55 */
56 #ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
57 # define PNG_USE_READ_MACROS
58 #endif
59 #if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
60 # if PNG_DEFAULT_READ_MACROS
61 # define PNG_USE_READ_MACROS
62 # endif
63 #endif
64
65 /* COMPILER SPECIFIC OPTIONS.
66 *
67 * These options are provided so that a variety of difficult compilers
68 * can be used. Some are fixed at build time (e.g. PNG_API_RULE
69 * below) but still have compiler specific implementations, others
70 * may be changed on a per-file basis when compiling against libpng.
71 */
72
73 /* The PNGARG macro protects us against machines that don't have function
74 * prototypes (ie K&R style headers). If your compiler does not handle
75 * function prototypes, define this macro and use the included ansi2knr.
76 * I've always been able to use _NO_PROTO as the indicator, but you may
77 * need to drag the empty declaration out in front of here, or change the
78 * ifdef to suit your own needs.
79 */
80 #ifndef PNGARG
81
82 # ifdef OF /* zlib prototype munger */
83 # define PNGARG(arglist) OF(arglist)
84 # else
85
86 # ifdef _NO_PROTO
87 # define PNGARG(arglist) ()
88 # else
89 # define PNGARG(arglist) arglist
90 # endif /* _NO_PROTO */
91
92 # endif /* OF */
93
94 #endif /* PNGARG */
95
96 /* Function calling conventions.
97 * =============================
98 * Normally it is not necessary to specify to the compiler how to call
99 * a function - it just does it - however on x86 systems derived from
100 * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
101 * and some others) there are multiple ways to call a function and the
102 * default can be changed on the compiler command line. For this reason
103 * libpng specifies the calling convention of every exported function and
104 * every function called via a user supplied function pointer. This is
105 * done in this file by defining the following macros:
106 *
107 * PNGAPI Calling convention for exported functions.
108 * PNGCBAPI Calling convention for user provided (callback) functions.
109 * PNGCAPI Calling convention used by the ANSI-C library (required
110 * for longjmp callbacks and sometimes used internally to
111 * specify the calling convention for zlib).
112 *
113 * These macros should never be overridden. If it is necessary to
114 * change calling convention in a private build this can be done
115 * by setting PNG_API_RULE (which defaults to 0) to one of the values
116 * below to select the correct 'API' variants.
117 *
118 * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
119 * This is correct in every known environment.
120 * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
121 * the 'C' calling convention (from PNGCAPI) for
122 * callbacks (PNGCBAPI). This is no longer required
123 * in any known environment - if it has to be used
124 * please post an explanation of the problem to the
125 * libpng mailing list.
126 *
127 * These cases only differ if the operating system does not use the C
128 * calling convention, at present this just means the above cases
129 * (x86 DOS/Windows sytems) and, even then, this does not apply to
130 * Cygwin running on those systems.
131 *
132 * Note that the value must be defined in pnglibconf.h so that what
133 * the application uses to call the library matches the conventions
134 * set when building the library.
135 */
136
137 /* Symbol export
138 * =============
139 * When building a shared library it is almost always necessary to tell
140 * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
141 * is used to mark the symbols. On some systems these symbols can be
142 * extracted at link time and need no special processing by the compiler,
143 * on other systems the symbols are flagged by the compiler and just
144 * the declaration requires a special tag applied (unfortunately) in a
145 * compiler dependent way. Some systems can do either.
146 *
147 * A small number of older systems also require a symbol from a DLL to
148 * be flagged to the program that calls it. This is a problem because
149 * we do not know in the header file included by application code that
150 * the symbol will come from a shared library, as opposed to a statically
151 * linked one. For this reason the application must tell us by setting
152 * the magic flag PNG_USE_DLL to turn on the special processing before
153 * it includes png.h.
154 *
155 * Four additional macros are used to make this happen:
156 *
157 * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
158 * the build or imported if PNG_USE_DLL is set - compiler
159 * and system specific.
160 *
161 * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
162 * 'type', compiler specific.
163 *
164 * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
165 * make a symbol exported from the DLL.
166 *
167 * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
168 * from a DLL - used to define PNG_IMPEXP when
169 * PNG_USE_DLL is set.
170 */
171
172 /* System specific discovery.
173 * ==========================
174 * This code is used at build time to find PNG_IMPEXP, the API settings
175 * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
176 * import processing is possible. On Windows/x86 systems it also sets
177 * compiler-specific macros to the values required to change the calling
178 * conventions of the various functions.
179 */
180 #if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
181 defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
182 ( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
183 defined(_M_X64) || defined(_M_IA64) )
184 /* Windows system (DOS doesn't support DLLs) running on x86/x64. Includes
185 * builds under Cygwin or MinGW. Also includes Watcom builds but these need
186 * special treatment because they are not compatible with GCC or Visual C
187 * because of different calling conventions.
188 */
189 # if PNG_API_RULE == 2
190 /* If this line results in an error, either because __watcall is not
191 * understood or because of a redefine just below you cannot use *this*
192 * build of the library with the compiler you are using. *This* build was
193 * build using Watcom and applications must also be built using Watcom!
194 */
195 # define PNGCAPI __watcall
196 # endif
197
198 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
199 # define PNGCAPI __cdecl
200 # if PNG_API_RULE == 1
201 # define PNGAPI __stdcall
202 # endif
203 # else
204 /* An older compiler, or one not detected (erroneously) above,
205 * if necessary override on the command line to get the correct
206 * variants for the compiler.
207 */
208 # ifndef PNGCAPI
209 # define PNGCAPI _cdecl
210 # endif
211 # if PNG_API_RULE == 1 && !defined(PNGAPI)
212 # define PNGAPI _stdcall
213 # endif
214 # endif /* compiler/api */
215 /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
216
217 # if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
218 ERROR: PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed
219 # endif
220
221 # if (defined(_MSC_VER) && _MSC_VER < 800) ||\
222 (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
223 /* older Borland and MSC
224 * compilers used '__export' and required this to be after
225 * the type.
226 */
227 # ifndef PNG_EXPORT_TYPE
228 # define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
229 # endif
230 # define PNG_DLL_EXPORT __export
231 # else /* newer compiler */
232 # define PNG_DLL_EXPORT __declspec(dllexport)
233 # ifndef PNG_DLL_IMPORT
234 # define PNG_DLL_IMPORT __declspec(dllimport)
235 # endif
236 # endif /* compiler */
237
238 #else /* !Windows/x86 */
239 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
240 # define PNGAPI _System
241 # else /* !Windows/x86 && !OS/2 */
242 /* Use the defaults, or define PNG*API on the command line (but
243 * this will have to be done for every compile!)
244 */
245 # endif /* other system, !OS/2 */
246 #endif /* !Windows/x86 */
247
248 /* Now do all the defaulting . */
249 #ifndef PNGCAPI
250 # define PNGCAPI
251 #endif
252 #ifndef PNGCBAPI
253 # define PNGCBAPI PNGCAPI
254 #endif
255 #ifndef PNGAPI
256 # define PNGAPI PNGCAPI
257 #endif
258
259 /* The default for PNG_IMPEXP depends on whether the library is
260 * being built or used.
261 */
262 #ifndef PNG_IMPEXP
263 # ifdef PNGLIB_BUILD
264 /* Building the library */
265 # if (defined(DLL_EXPORT)/*from libtool*/ ||\
266 defined(_WINDLL) || defined(_DLL) || defined(__DLL__) ||\
267 defined(_USRDLL) ||\
268 defined(PNG_BUILD_DLL)) && defined(PNG_DLL_EXPORT)
269 /* Building a DLL. */
270 # define PNG_IMPEXP PNG_DLL_EXPORT
271 # endif /* DLL */
272 # else
273 /* Using the library */
274 # if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
275 /* This forces use of a DLL, disallowing static linking */
276 # define PNG_IMPEXP PNG_DLL_IMPORT
277 # endif
278 # endif
279
280 # ifndef PNG_IMPEXP
281 # define PNG_IMPEXP
282 # endif
283 #endif
284
285 /* THe following complexity is concerned with getting the 'attributes' of the
286 * declared function in the correct place. This potentially requires a separate
287 * PNG_EXPORT function for every compiler.
288 */
289 #ifndef PNG_FUNCTION
290 # ifdef __GNUC__
291 # define PNG_FUNCTION(type, name, args, attributes)\
292 attributes type name args
293 # else /* !GNUC */
294 # ifdef _MSC_VER
295 # define PNG_FUNCTION(type, name, args, attributes)\
296 attributes type name args
297 # else /* !MSC */
298 # define PNG_FUNCTION(type, name, args, attributes)\
299 type name args
300 # endif
301 # endif
302 #endif
303
304 #ifndef PNG_EXPORT_TYPE
305 # define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
306 #endif
307
308 /* The ordinal value is only relevant when preprocessing png.h for symbol
309 * table entries, so we discard it here. See the .dfn files in the
310 * scripts directory.
311 */
312 #ifndef PNG_EXPORTA
313 # define PNG_EXPORTA(ordinal, type, name, args, attributes)\
314 extern PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args),\
315 attributes)
316 #endif
317
318 #define PNG_EXPORT(ordinal, type, name, args)\
319 PNG_EXPORTA(ordinal, type, name, args, )
320
321 /* Use PNG_REMOVED to comment out a removed interface. */
322 #ifndef PNG_REMOVED
323 # define PNG_REMOVED(ordinal, type, name, args, attributes)
324 #endif
325
326 #ifndef PNG_CALLBACK
327 # define PNG_CALLBACK(type, name, args, attributes)\
328 type (PNGCBAPI name) PNGARG(args) attributes
329 #endif
330
331 /* Support for compiler specific function attributes. These are used
332 * so that where compiler support is available incorrect use of API
333 * functions in png.h will generate compiler warnings.
334 *
335 * Added at libpng-1.2.41.
336 */
337
338 #ifndef PNG_NO_PEDANTIC_WARNINGS
339 # ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
340 # define PNG_PEDANTIC_WARNINGS_SUPPORTED
341 # endif
342 #endif
343
344 #ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
345 /* Support for compiler specific function attributes. These are used
346 * so that where compiler support is available incorrect use of API
347 * functions in png.h will generate compiler warnings. Added at libpng
348 * version 1.2.41.
349 */
350 # ifdef __GNUC__
351 # ifndef PNG_USE_RESULT
352 # define PNG_USE_RESULT __attribute__((__warn_unused_result__))
353 # endif
354 # ifndef PNG_NORETURN
355 # define PNG_NORETURN __attribute__((__noreturn__))
356 # endif
357 # ifndef PNG_PTR_NORETURN
358 # define PNG_PTR_NORETURN __attribute__((__noreturn__))
359 # endif
360 # ifndef PNG_ALLOCATED
361 # define PNG_ALLOCATED __attribute__((__malloc__))
362 # endif
363
364 /* This specifically protects structure members that should only be
365 * accessed from within the library, therefore should be empty during
366 * a library build.
367 */
368 # ifndef PNGLIB_BUILD
369 # ifndef PNG_DEPRECATED
370 # define PNG_DEPRECATED __attribute__((__deprecated__))
371 # endif
372 # ifndef PNG_DEPSTRUCT
373 # define PNG_DEPSTRUCT __attribute__((__deprecated__))
374 # endif
375 # ifndef PNG_PRIVATE
376 # if 0 /* Doesn't work so we use deprecated instead*/
377 # define PNG_PRIVATE \
378 __attribute__((warning("This function is not exported by libpng.")))
379 # else
380 # define PNG_PRIVATE \
381 __attribute__((__deprecated__))
382 # endif
383 # endif /* PNG_PRIVATE */
384 # endif /* PNGLIB_BUILD */
385 # endif /* __GNUC__ */
386 # ifdef _MSC_VER /* may need to check value */
387 # ifndef PNG_USE_RESULT
388 # define PNG_USE_RESULT /*not supported*/
389 # endif
390 # ifndef PNG_NORETURN
391 # define PNG_NORETURN __declspec(noreturn)
392 # endif
393 # ifndef PNG_PTR_NORETURN
394 # define PNG_PTR_NORETURN /*not supported*/
395 # endif
396 # ifndef PNG_ALLOCATED
397 # define PNG_ALLOCATED __declspec(restrict)
398 # endif
399
400 /* This specifically protects structure members that should only be
401 * accessed from within the library, therefore should be empty during
402 * a library build.
403 */
404 # ifndef PNGLIB_BUILD
405 # ifndef PNG_DEPRECATED
406 # define PNG_DEPRECATED __declspec(deprecated)
407 # endif
408 # ifndef PNG_DEPSTRUCT
409 # define PNG_DEPSTRUCT __declspec(deprecated)
410 # endif
411 # ifndef PNG_PRIVATE
412 # define PNG_PRIVATE __declspec(deprecated)
413 # endif /* PNG_PRIVATE */
414 # endif /* PNGLIB_BUILD */
415 # endif /* __GNUC__ */
416 #endif /* PNG_PEDANTIC_WARNINGS */
417
418 #ifndef PNG_DEPRECATED
419 # define PNG_DEPRECATED /* Use of this function is deprecated */
420 #endif
421 #ifndef PNG_USE_RESULT
422 # define PNG_USE_RESULT /* The result of this function must be checked */
423 #endif
424 #ifndef PNG_NORETURN
425 # define PNG_NORETURN /* This function does not return */
426 #endif
427 #ifndef PNG_ALLOCATED
428 # define PNG_ALLOCATED /* The result of the function is new memory */
429 #endif
430 #ifndef PNG_DEPSTRUCT
431 # define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
432 #endif
433 #ifndef PNG_PRIVATE
434 # define PNG_PRIVATE /* This is a private libpng function */
435 #endif
436 #ifndef PNG_FP_EXPORT /* A floating point API. */
437 # ifdef PNG_FLOATING_POINT_SUPPORTED
438 # define PNG_FP_EXPORT(ordinal, type, name, args)\
439 PNG_EXPORT(ordinal, type, name, args)
440 # else /* No floating point APIs */
441 # define PNG_FP_EXPORT(ordinal, type, name, args)
442 # endif
443 #endif
444 #ifndef PNG_FIXED_EXPORT /* A fixed point API. */
445 # ifdef PNG_FIXED_POINT_SUPPORTED
446 # define PNG_FIXED_EXPORT(ordinal, type, name, args)\
447 PNG_EXPORT(ordinal, type, name, args)
448 # else /* No fixed point APIs */
449 # define PNG_FIXED_EXPORT(ordinal, type, name, args)
450 # endif
451 #endif
452
453 /* The following uses const char * instead of char * for error
454 * and warning message functions, so some compilers won't complain.
455 * If you do not want to use const, define PNG_NO_CONST here.
456 *
457 * This should not change how the APIs are called, so it can be done
458 * on a per-file basis in the application.
459 */
460 #ifndef PNG_CONST
461 # ifndef PNG_NO_CONST
462 # define PNG_CONST const
463 # else
464 # define PNG_CONST
465 # endif
466 #endif
467
468 /* Some typedefs to get us started. These should be safe on most of the
469 * common platforms. The typedefs should be at least as large as the
470 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
471 * don't have to be exactly that size. Some compilers dislike passing
472 * unsigned shorts as function parameters, so you may be better off using
473 * unsigned int for png_uint_16.
474 */
475
476 #if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
477 typedef unsigned int png_uint_32;
478 typedef int png_int_32;
479 #else
480 typedef unsigned long png_uint_32;
481 typedef long png_int_32;
482 #endif
483 typedef unsigned short png_uint_16;
484 typedef short png_int_16;
485 typedef unsigned char png_byte;
486
487 #ifdef PNG_NO_SIZE_T
488 typedef unsigned int png_size_t;
489 #else
490 typedef size_t png_size_t;
491 #endif
492 #define png_sizeof(x) (sizeof (x))
493
494 /* The following is needed for medium model support. It cannot be in the
495 * pngpriv.h header. Needs modification for other compilers besides
496 * MSC. Model independent support declares all arrays and pointers to be
497 * large using the far keyword. The zlib version used must also support
498 * model independent data. As of version zlib 1.0.4, the necessary changes
499 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
500 * changes that are needed. (Tim Wegner)
501 */
502
503 /* Separate compiler dependencies (problem here is that zlib.h always
504 * defines FAR. (SJT)
505 */
506 #ifdef __BORLANDC__
507 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
508 # define LDATA 1
509 # else
510 # define LDATA 0
511 # endif
512 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
513 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
514 # define PNG_MAX_MALLOC_64K /* only used in build */
515 # if (LDATA != 1)
516 # ifndef FAR
517 # define FAR __far
518 # endif
519 # define USE_FAR_KEYWORD
520 # endif /* LDATA != 1 */
521 /* Possibly useful for moving data out of default segment.
522 * Uncomment it if you want. Could also define FARDATA as
523 * const if your compiler supports it. (SJT)
524 # define FARDATA FAR
525 */
526 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
527 #endif /* __BORLANDC__ */
528
529
530 /* Suggest testing for specific compiler first before testing for
531 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
532 * making reliance oncertain keywords suspect. (SJT)
533 */
534
535 /* MSC Medium model */
536 #ifdef FAR
537 # ifdef M_I86MM
538 # define USE_FAR_KEYWORD
539 # define FARDATA FAR
540 # include <dos.h>
541 # endif
542 #endif
543
544 /* SJT: default case */
545 #ifndef FAR
546 # define FAR
547 #endif
548
549 /* At this point FAR is always defined */
550 #ifndef FARDATA
551 # define FARDATA
552 #endif
553
554 /* Typedef for floating-point numbers that are converted
555 * to fixed-point with a multiple of 100,000, e.g., gamma
556 */
557 typedef png_int_32 png_fixed_point;
558
559 /* Add typedefs for pointers */
560 typedef void FAR * png_voidp;
561 typedef PNG_CONST void FAR * png_const_voidp;
562 typedef png_byte FAR * png_bytep;
563 typedef PNG_CONST png_byte FAR * png_const_bytep;
564 typedef png_uint_32 FAR * png_uint_32p;
565 typedef PNG_CONST png_uint_32 FAR * png_const_uint_32p;
566 typedef png_int_32 FAR * png_int_32p;
567 typedef PNG_CONST png_int_32 FAR * png_const_int_32p;
568 typedef png_uint_16 FAR * png_uint_16p;
569 typedef PNG_CONST png_uint_16 FAR * png_const_uint_16p;
570 typedef png_int_16 FAR * png_int_16p;
571 typedef PNG_CONST png_int_16 FAR * png_const_int_16p;
572 typedef char FAR * png_charp;
573 typedef PNG_CONST char FAR * png_const_charp;
574 typedef png_fixed_point FAR * png_fixed_point_p;
575 typedef PNG_CONST png_fixed_point FAR * png_const_fixed_point_p;
576 typedef png_size_t FAR * png_size_tp;
577 typedef PNG_CONST png_size_t FAR * png_const_size_tp;
578
579 #ifdef PNG_STDIO_SUPPORTED
580 typedef FILE * png_FILE_p;
581 #endif
582
583 #ifdef PNG_FLOATING_POINT_SUPPORTED
584 typedef double FAR * png_doublep;
585 typedef PNG_CONST double FAR * png_const_doublep;
586 #endif
587
588 /* Pointers to pointers; i.e. arrays */
589 typedef png_byte FAR * FAR * png_bytepp;
590 typedef png_uint_32 FAR * FAR * png_uint_32pp;
591 typedef png_int_32 FAR * FAR * png_int_32pp;
592 typedef png_uint_16 FAR * FAR * png_uint_16pp;
593 typedef png_int_16 FAR * FAR * png_int_16pp;
594 typedef PNG_CONST char FAR * FAR * png_const_charpp;
595 typedef char FAR * FAR * png_charpp;
596 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
597 #ifdef PNG_FLOATING_POINT_SUPPORTED
598 typedef double FAR * FAR * png_doublepp;
599 #endif
600
601 /* Pointers to pointers to pointers; i.e., pointer to array */
602 typedef char FAR * FAR * FAR * png_charppp;
603
604 /* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
605 * and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
606 * to png_alloc_size_t are not necessary; in fact, it is recommended
607 * not to use them at all so that the compiler can complain when something
608 * turns out to be problematic.
609 * Casts in the other direction (from png_alloc_size_t to png_size_t or
610 * png_uint_32) should be explicitly applied; however, we do not expect
611 * to encounter practical situations that require such conversions.
612 */
613 #if defined(__TURBOC__) && !defined(__FLAT__)
614 typedef unsigned long png_alloc_size_t;
615 #else
616 # if defined(_MSC_VER) && defined(MAXSEG_64K)
617 typedef unsigned long png_alloc_size_t;
618 # else
619 /* This is an attempt to detect an old Windows system where (int) is
620 * actually 16 bits, in that case png_malloc must have an argument with a
621 * bigger size to accomodate the requirements of the library.
622 */
623 # if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_)) && \
624 (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
625 typedef DWORD png_alloc_size_t;
626 # else
627 typedef png_size_t png_alloc_size_t;
628 # endif
629 # endif
630 #endif
631
632 #endif /* PNGCONF_H */
png_int_16
short png_int_16
Definition: pngconf.h:484
png_size_tp
png_size_t FAR * png_size_tp
Definition: pngconf.h:576
png_uint_32pp
png_uint_32 FAR *FAR * png_uint_32pp
Definition: pngconf.h:590
png_charp
char FAR * png_charp
Definition: pngconf.h:572
png_const_voidp
PNG_CONST void FAR * png_const_voidp
Definition: pngconf.h:561
png_fixed_point_p
png_fixed_point FAR * png_fixed_point_p
Definition: pngconf.h:574
png_const_uint_32p
PNG_CONST png_uint_32 FAR * png_const_uint_32p
Definition: pngconf.h:565
png_int_32
long png_int_32
Definition: pngconf.h:481
png_const_charp
PNG_CONST char FAR * png_const_charp
Definition: pngconf.h:573
png_const_int_16p
PNG_CONST png_int_16 FAR * png_const_int_16p
Definition: pngconf.h:571
png_int_16pp
png_int_16 FAR *FAR * png_int_16pp
Definition: pngconf.h:593
png_alloc_size_t
png_size_t png_alloc_size_t
Definition: pngconf.h:627
png_bytepp
png_byte FAR *FAR * png_bytepp
Definition: pngconf.h:589
png_uint_32
unsigned long png_uint_32
Definition: pngconf.h:480
PNGAPI
#define PNGAPI
Definition: pngconf.h:256
png_int_32p
png_int_32 FAR * png_int_32p
Definition: pngconf.h:566
PNG_CONST
#define PNG_CONST
Definition: pngconf.h:462
png_const_charpp
PNG_CONST char FAR *FAR * png_const_charpp
Definition: pngconf.h:594
png_byte
unsigned char png_byte
Definition: pngconf.h:485
png_uint_16
unsigned short png_uint_16
Definition: pngconf.h:483
png_uint_16p
png_uint_16 FAR * png_uint_16p
Definition: pngconf.h:568
png_fixed_point_pp
png_fixed_point FAR *FAR * png_fixed_point_pp
Definition: pngconf.h:596
png_const_bytep
PNG_CONST png_byte FAR * png_const_bytep
Definition: pngconf.h:563
png_const_fixed_point_p
PNG_CONST png_fixed_point FAR * png_const_fixed_point_p
Definition: pngconf.h:575
png_const_int_32p
PNG_CONST png_int_32 FAR * png_const_int_32p
Definition: pngconf.h:567
png_bytep
png_byte FAR * png_bytep
Definition: pngconf.h:562
png_int_32pp
png_int_32 FAR *FAR * png_int_32pp
Definition: pngconf.h:591
png_uint_16pp
png_uint_16 FAR *FAR * png_uint_16pp
Definition: pngconf.h:592
FAR
#define FAR
Definition: pngconf.h:546
png_voidp
void FAR * png_voidp
Definition: pngconf.h:560
png_fixed_point
png_int_32 png_fixed_point
Definition: pngconf.h:557
png_charpp
char FAR *FAR * png_charpp
Definition: pngconf.h:595
png_charppp
char FAR *FAR *FAR * png_charppp
Definition: pngconf.h:602
png_size_t
size_t png_size_t
Definition: pngconf.h:490
png_const_size_tp
PNG_CONST png_size_t FAR * png_const_size_tp
Definition: pngconf.h:577
png_uint_32p
png_uint_32 FAR * png_uint_32p
Definition: pngconf.h:564
png_const_uint_16p
PNG_CONST png_uint_16 FAR * png_const_uint_16p
Definition: pngconf.h:569
png_int_16p
png_int_16 FAR * png_int_16p
Definition: pngconf.h:570