5905484c75
The macro was documented with two arguments (name,ordinal), however
the symbol checking .dfn files assumed five arguments. The five
argument form seems more useful so it is changed to that.
603 lines
21 KiB
C
603 lines
21 KiB
C
|
|
/* pngconf.h - machine configurable file for libpng
|
|
*
|
|
* libpng version 1.5.0beta23 - April 28, 2010
|
|
*
|
|
* Copyright (c) 1998-2010 Glenn Randers-Pehrson
|
|
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
|
|
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
|
|
*
|
|
* This code is released under the libpng license.
|
|
* For conditions of distribution and use, see the disclaimer
|
|
* and license in png.h
|
|
*
|
|
*/
|
|
|
|
/* Any machine specific code is near the front of this file, so if you
|
|
* are configuring libpng for a machine, you may want to read the section
|
|
* starting here down to where it starts to typedef png_color, png_text,
|
|
* and png_info.
|
|
*/
|
|
|
|
#ifndef PNGCONF_H
|
|
#define PNGCONF_H
|
|
|
|
/* Need the time information for converting tIME chunks, it
|
|
* defines struct tm:
|
|
*/
|
|
#ifdef PNG_CONVERT_tIME_SUPPORTED
|
|
/* "time.h" functions are not supported on WindowsCE */
|
|
# include <time.h>
|
|
#endif
|
|
|
|
/* PNG_NO_LIMITS_H may be used to turn off the use of the standard C
|
|
* definition file for machine specific limits, this may impact the
|
|
* correctness of the definitons below (see uses of INT_MAX).
|
|
*/
|
|
#ifndef PNG_NO_LIMITS_H
|
|
# include <limits.h>
|
|
#endif
|
|
|
|
/* This controls optimization of the reading of 16 and 32 bit values
|
|
* from PNG files. It can be set on a per-app-file basis - it
|
|
* just changes whether a macro is used to the function is called.
|
|
* The library builder sets the default, if read functions are not
|
|
* built into the library the macro implementation is forced on.
|
|
*/
|
|
#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
|
|
# define PNG_USE_READ_MACROS
|
|
#endif
|
|
#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
|
|
# if PNG_DEFAULT_READ_MACROS
|
|
# define PNG_USE_READ_MACROS
|
|
# endif
|
|
#endif
|
|
|
|
/* COMPILER SPECIFIC OPTIONS.
|
|
*
|
|
* These options are provided so that a variety of difficult compilers
|
|
* can be used. Some are fixed at build time (e.g. PNG_API_RULE
|
|
* below) but still have compiler specific implementations, others
|
|
* may be changed on a per-file basis when compiling against libpng.
|
|
*/
|
|
/* This macro protects us against machines that don't have function
|
|
* prototypes (ie K&R style headers). If your compiler does not handle
|
|
* function prototypes, define this macro and use the included ansi2knr.
|
|
* I've always been able to use _NO_PROTO as the indicator, but you may
|
|
* need to drag the empty declaration out in front of here, or change the
|
|
* ifdef to suit your own needs.
|
|
*/
|
|
#ifndef PNGARG
|
|
|
|
# ifdef OF /* zlib prototype munger */
|
|
# define PNGARG(arglist) OF(arglist)
|
|
# else
|
|
|
|
# ifdef _NO_PROTO
|
|
# define PNGARG(arglist) ()
|
|
# else
|
|
# define PNGARG(arglist) arglist
|
|
# endif /* _NO_PROTO */
|
|
|
|
# endif /* OF */
|
|
|
|
#endif /* PNGARG */
|
|
|
|
/* Function calling conventions.
|
|
* =============================
|
|
* Normally it is not necessary to specify to the compiler how to call
|
|
* a function - it just does it - however on x86 systems derived from
|
|
* Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
|
|
* and some others) there are multiple ways to call a function and the
|
|
* default can be changed on the compiler command line. For this reason
|
|
* libpng specifies the calling convention of every exported function and
|
|
* every function called via a user supplied function pointer. This is
|
|
* done in this file by defining the following macros:
|
|
*
|
|
* PNGAPI Calling convention for exported functions.
|
|
* PNGCBAPI Calling convention for user provided (callback) functions.
|
|
* PNGCAPI Calling convention used by the ANSI-C library (required
|
|
* for longjmp callbacks and sometimes used internally to
|
|
* specify the calling convention for zlib).
|
|
*
|
|
* These macros should never be overridden. If it is necessary to
|
|
* change calling convention in a private build this can be done
|
|
* by setting PNG_API_RULE (which defaults to 0) to one of the values
|
|
* below to select the correct 'API' variants.
|
|
*
|
|
* PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
|
|
* This is correct in every known environment.
|
|
* PNG_API_RULE=1 Use the operating system convention for PNGAPI and
|
|
* the 'C' calling convention (from PNGCAPI) for
|
|
* callbacks (PNGCBAPI). This is no longer required
|
|
* in any known environment - if it has to be used
|
|
* please post an explanation of the problem to the
|
|
* libpng mailing list.
|
|
*
|
|
* These cases only differ if the operating system does not use the C
|
|
* calling convention, at present this just means the above cases
|
|
* (x86 DOS/Windows sytems) and, even then, this does not apply to
|
|
* Cygwin running on those systems.
|
|
*
|
|
* Note that the value must be defined in pnglibconf.h so that what
|
|
* the application uses to call the library matches the conventions
|
|
* set when building the library.
|
|
*/
|
|
|
|
/* Symbol export
|
|
* =============
|
|
* When building a shared library it is almost always necessary to tell
|
|
* the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
|
|
* is used to mark the symbols. On some systems these symbols can be
|
|
* extracted at link time and need no special processing by the compiler,
|
|
* on other systems the symbols are flagged by the compiler and just
|
|
* the declaration requires a special tag applied (unfortunately) in a
|
|
* compiler dependent way. Some systems can do either.
|
|
*
|
|
* A small number of older systems also require a symbol from a DLL to
|
|
* be flagged to the program that calls it. This is a problem because
|
|
* we do not know in the header file included by application code that
|
|
* the symbol will come from a shared library, as opposed to a statically
|
|
* linked one. For this reason the application must tell us by setting
|
|
* the magic flag PNG_USE_DLL to turn on the special processing before
|
|
* it includes png.h.
|
|
*
|
|
* Four additional macros are used to make this happen:
|
|
*
|
|
* PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
|
|
* the build or imported if PNG_USE_DLL is set - compiler
|
|
* and system specific.
|
|
*
|
|
* PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
|
|
* 'type', compiler specific.
|
|
*
|
|
* PNG_DLL_EXPORT Set to the magic to use during a libpng build to
|
|
* make a symbol exported from the DLL.
|
|
*
|
|
* PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
|
|
* from a DLL - used to define PNG_IMPEXP when
|
|
* PNG_USE_DLL is set.
|
|
*/
|
|
|
|
/* System specific discovery.
|
|
* ==========================
|
|
* This code is used at build time to find PNG_IMPEXP, the API settings
|
|
* and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
|
|
* import processing is possible. On Windows/x86 systems it also sets
|
|
* compiler-specific macros to the values required to change the calling
|
|
* conventions of the various functions.
|
|
*/
|
|
#if ( defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
|
|
defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__) ) &&\
|
|
( defined(_X86_) || defined(_X64_) || defined(_M_IX86) ||\
|
|
defined(_M_X64) || defined(_M_IA64) )
|
|
/* Windows system (DOS doesn't support DLLs) running on x86/x64.
|
|
* Includes builds under Cygwin or MinGW.
|
|
*/
|
|
# if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
|
|
# define PNGCAPI __cdecl
|
|
# if PNG_API_RULE == 1
|
|
# define PNGAPI __stdcall
|
|
# endif
|
|
# else
|
|
/* An older compiler, or one not detected (erroneously) above,
|
|
* if necessary override on the command line to get the correct
|
|
* variants for the compiler.
|
|
*/
|
|
# ifndef PNGCAPI
|
|
# define PNGCAPI _cdecl
|
|
# endif
|
|
# if PNG_API_RULE == 1 && !defined(PNGAPI)
|
|
# define PNGAPI _stdcall
|
|
# endif
|
|
# endif /* compiler/api */
|
|
/* NOTE: PNGCBAPI always defaults to PNGCAPI. */
|
|
|
|
# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
|
|
ERROR: PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed
|
|
# endif
|
|
|
|
# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
|
|
(defined(__BORLANDC__) && __BORLANDC__ < 0x500)
|
|
/* older Borland and MSC
|
|
* compilers used '__export' and required this to be after
|
|
* the type.
|
|
*/
|
|
# ifndef PNG_EXPORT_TYPE
|
|
# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
|
|
# endif
|
|
# define PNG_DLL_EXPORT __export
|
|
# else /* newer compiler */
|
|
# define PNG_DLL_EXPORT __declspec(dllexport)
|
|
# ifndef PNG_DLL_IMPORT
|
|
# define PNG_DLL_IMPORT __declspec(dllimport)
|
|
# endif
|
|
# endif /* compiler */
|
|
|
|
#else /* !Windows/x86 */
|
|
# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
|
|
# define PNGAPI _System
|
|
# else /* !Windows/x86 && !OS/2 */
|
|
/* Use the defaults, or define PNG*API on the command line (but
|
|
* this will have to be done for every compile!)
|
|
*/
|
|
# endif /* other system, !OS/2 */
|
|
#endif /* !Windows/x86 */
|
|
|
|
/* Now do all the defaulting . */
|
|
#ifndef PNGCAPI
|
|
# define PNGCAPI
|
|
#endif
|
|
#ifndef PNGCBAPI
|
|
# define PNGCBAPI PNGCAPI
|
|
#endif
|
|
#ifndef PNGAPI
|
|
# define PNGAPI PNGCAPI
|
|
#endif
|
|
|
|
/* The default for PNG_IMPEXP depends on whether the library is
|
|
* being built or used.
|
|
*/
|
|
#ifndef PNG_IMPEXP
|
|
# ifdef PNGLIB_BUILD
|
|
/* Building the library */
|
|
# if (defined(DLL_EXPORT)/*from libtool*/ ||\
|
|
defined(_WINDLL) || defined(_DLL) || defined(__DLL__) ||\
|
|
defined(_USRDLL) ||\
|
|
defined(PNG_BUILD_DLL)) && defined(PNG_DLL_EXPORT)
|
|
/* Building a DLL. */
|
|
# define PNG_IMPEXP PNG_DLL_EXPORT
|
|
# endif /* DLL */
|
|
# else
|
|
/* Using the library */
|
|
# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
|
|
/* This forces use of a DLL, disallowing static linking */
|
|
# define PNG_IMPEXP PNG_DLL_IMPORT
|
|
# endif
|
|
# endif
|
|
|
|
# ifndef PNG_IMPEXP
|
|
# define PNG_IMPEXP
|
|
# endif
|
|
#endif
|
|
|
|
#ifndef PNG_EXPORT_TYPE
|
|
# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
|
|
#endif
|
|
#ifndef PNG_EXPORT
|
|
# define PNG_EXPORT(type, name, args, attributes, ordinal)\
|
|
PNG_EXPORT_TYPE(type) (PNGAPI name) PNGARG(args) attributes
|
|
#endif
|
|
|
|
/* Use PNG_REMOVED to comment out a removed interface. */
|
|
#ifndef PNG_REMOVED
|
|
# define PNG_REMOVED(type, name, args, attributes, ordinal)
|
|
#endif
|
|
|
|
#ifndef PNG_CALLBACK
|
|
# define PNG_CALLBACK(type, name, args, attributes)\
|
|
type (PNGCBAPI name) PNGARG(args) attributes
|
|
#endif
|
|
|
|
/* Support for compiler specific function attributes. These are used
|
|
* so that where compiler support is available incorrect use of API
|
|
* functions in png.h will generate compiler warnings.
|
|
*
|
|
* Added at libpng-1.2.41.
|
|
*/
|
|
|
|
#ifndef PNG_NO_PEDANTIC_WARNINGS
|
|
# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
|
|
# define PNG_PEDANTIC_WARNINGS_SUPPORTED
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
|
|
/* Support for compiler specific function attributes. These are used
|
|
* so that where compiler support is available incorrect use of API
|
|
* functions in png.h will generate compiler warnings. Added at libpng
|
|
* version 1.2.41.
|
|
*/
|
|
# ifdef __GNUC__
|
|
# ifndef PNG_USE_RESULT
|
|
# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
|
|
# endif
|
|
# ifndef PNG_NORETURN
|
|
# define PNG_NORETURN __attribute__((__noreturn__))
|
|
# endif
|
|
# ifndef PNG_ALLOCATED
|
|
# define PNG_ALLOCATED __attribute__((__malloc__))
|
|
# endif
|
|
|
|
/* This specifically protects structure members that should only be
|
|
* accessed from within the library, therefore should be empty during
|
|
* a library build.
|
|
*/
|
|
# ifndef PNGLIB_BUILD
|
|
# ifndef PNG_DEPRECATED
|
|
# define PNG_DEPRECATED __attribute__((__deprecated__))
|
|
# endif
|
|
# ifndef PNG_DEPSTRUCT
|
|
# define PNG_DEPSTRUCT __attribute__((__deprecated__))
|
|
# endif
|
|
# ifndef PNG_PRIVATE
|
|
# if 0 /* Doesn't work so we use deprecated instead*/
|
|
# define PNG_PRIVATE \
|
|
__attribute__((warning("This function is not exported by libpng.")))
|
|
# else
|
|
# define PNG_PRIVATE \
|
|
__attribute__((__deprecated__))
|
|
# endif
|
|
# endif /* PNG_PRIVATE */
|
|
# endif /* PNGLIB_BUILD */
|
|
# endif /* __GNUC__ */
|
|
#endif /* PNG_PEDANTIC_WARNINGS */
|
|
|
|
#ifndef PNG_DEPRECATED
|
|
# define PNG_DEPRECATED /* Use of this function is deprecated */
|
|
#endif
|
|
#ifndef PNG_USE_RESULT
|
|
# define PNG_USE_RESULT /* The result of this function must be checked */
|
|
#endif
|
|
#ifndef PNG_NORETURN
|
|
# define PNG_NORETURN /* This function does not return */
|
|
#endif
|
|
#ifndef PNG_ALLOCATED
|
|
# define PNG_ALLOCATED /* The result of the function is new memory */
|
|
#endif
|
|
#ifndef PNG_DEPSTRUCT
|
|
# define PNG_DEPSTRUCT /* Access to this struct member is deprecated */
|
|
#endif
|
|
#ifndef PNG_PRIVATE
|
|
# define PNG_PRIVATE /* This is a private libpng function */
|
|
#endif
|
|
|
|
/* The following uses const char * instead of char * for error
|
|
* and warning message functions, so some compilers won't complain.
|
|
* If you do not want to use const, define PNG_NO_CONST here.
|
|
*
|
|
* This should not change how the APIs are called, so it can be done
|
|
* on a per-file basis in the application.
|
|
*/
|
|
#ifndef PNG_CONST
|
|
# ifndef PNG_NO_CONST
|
|
# define PNG_CONST const
|
|
# else
|
|
# define PNG_CONST
|
|
# endif
|
|
#endif
|
|
|
|
/* Some typedefs to get us started. These should be safe on most of the
|
|
* common platforms. The typedefs should be at least as large as the
|
|
* numbers suggest (a png_uint_32 must be at least 32 bits long), but they
|
|
* don't have to be exactly that size. Some compilers dislike passing
|
|
* unsigned shorts as function parameters, so you may be better off using
|
|
* unsigned int for png_uint_16.
|
|
*/
|
|
|
|
#if defined(INT_MAX) && (INT_MAX > 0x7ffffffeL)
|
|
typedef unsigned int png_uint_32;
|
|
typedef int png_int_32;
|
|
#else
|
|
typedef unsigned long png_uint_32;
|
|
typedef long png_int_32;
|
|
#endif
|
|
typedef unsigned short png_uint_16;
|
|
typedef short png_int_16;
|
|
typedef unsigned char png_byte;
|
|
|
|
#ifdef PNG_NO_SIZE_T
|
|
typedef unsigned int png_size_t;
|
|
#else
|
|
typedef size_t png_size_t;
|
|
#endif
|
|
#define png_sizeof(x) sizeof(x)
|
|
|
|
/* The following is needed for medium model support. It cannot be in the
|
|
* pngpriv.h header. Needs modification for other compilers besides
|
|
* MSC. Model independent support declares all arrays and pointers to be
|
|
* large using the far keyword. The zlib version used must also support
|
|
* model independent data. As of version zlib 1.0.4, the necessary changes
|
|
* have been made in zlib. The USE_FAR_KEYWORD define triggers other
|
|
* changes that are needed. (Tim Wegner)
|
|
*/
|
|
|
|
/* Separate compiler dependencies (problem here is that zlib.h always
|
|
* defines FAR. (SJT)
|
|
*/
|
|
#ifdef __BORLANDC__
|
|
# if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
|
|
# define LDATA 1
|
|
# else
|
|
# define LDATA 0
|
|
# endif
|
|
/* GRR: why is Cygwin in here? Cygwin is not Borland C... */
|
|
# if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
|
|
# define PNG_MAX_MALLOC_64K /* only used in build */
|
|
# if (LDATA != 1)
|
|
# ifndef FAR
|
|
# define FAR __far
|
|
# endif
|
|
# define USE_FAR_KEYWORD
|
|
# endif /* LDATA != 1 */
|
|
/* Possibly useful for moving data out of default segment.
|
|
* Uncomment it if you want. Could also define FARDATA as
|
|
* const if your compiler supports it. (SJT)
|
|
# define FARDATA FAR
|
|
*/
|
|
# endif /* __WIN32__, __FLAT__, __CYGWIN__ */
|
|
#endif /* __BORLANDC__ */
|
|
|
|
|
|
/* Suggest testing for specific compiler first before testing for
|
|
* FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
|
|
* making reliance oncertain keywords suspect. (SJT)
|
|
*/
|
|
|
|
/* MSC Medium model */
|
|
#ifdef FAR
|
|
# ifdef M_I86MM
|
|
# define USE_FAR_KEYWORD
|
|
# define FARDATA FAR
|
|
# include <dos.h>
|
|
# endif
|
|
#endif
|
|
|
|
/* SJT: default case */
|
|
#ifndef FAR
|
|
# define FAR
|
|
#endif
|
|
|
|
/* At this point FAR is always defined */
|
|
#ifndef FARDATA
|
|
# define FARDATA
|
|
#endif
|
|
|
|
/* Typedef for floating-point numbers that are converted
|
|
* to fixed-point with a multiple of 100,000, e.g., int_gamma
|
|
*/
|
|
typedef png_int_32 png_fixed_point;
|
|
|
|
/* Add typedefs for pointers */
|
|
typedef void FAR * png_voidp;
|
|
typedef png_byte FAR * png_bytep;
|
|
typedef png_uint_32 FAR * png_uint_32p;
|
|
typedef png_int_32 FAR * png_int_32p;
|
|
typedef png_uint_16 FAR * png_uint_16p;
|
|
typedef png_int_16 FAR * png_int_16p;
|
|
typedef PNG_CONST char FAR * png_const_charp;
|
|
typedef char FAR * png_charp;
|
|
typedef png_fixed_point FAR * png_fixed_point_p;
|
|
|
|
#ifdef PNG_STDIO_SUPPORTED
|
|
typedef FILE * png_FILE_p;
|
|
#endif
|
|
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * png_doublep;
|
|
#endif
|
|
|
|
/* Pointers to pointers; i.e. arrays */
|
|
typedef png_byte FAR * FAR * png_bytepp;
|
|
typedef png_uint_32 FAR * FAR * png_uint_32pp;
|
|
typedef png_int_32 FAR * FAR * png_int_32pp;
|
|
typedef png_uint_16 FAR * FAR * png_uint_16pp;
|
|
typedef png_int_16 FAR * FAR * png_int_16pp;
|
|
typedef PNG_CONST char FAR * FAR * png_const_charpp;
|
|
typedef char FAR * FAR * png_charpp;
|
|
typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
|
|
#ifdef PNG_FLOATING_POINT_SUPPORTED
|
|
typedef double FAR * FAR * png_doublepp;
|
|
#endif
|
|
|
|
/* Pointers to pointers to pointers; i.e., pointer to array */
|
|
typedef char FAR * FAR * FAR * png_charppp;
|
|
|
|
#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
|
|
|
|
/* Users may want to use these so they are not private. Any library
|
|
* functions that are passed far data must be model-independent.
|
|
*/
|
|
|
|
/* Memory model/platform independent fns */
|
|
#ifndef PNG_ABORT
|
|
# ifdef _WINDOWS_
|
|
# define PNG_ABORT() ExitProcess(0)
|
|
# else
|
|
# define PNG_ABORT() abort()
|
|
# endif
|
|
#endif
|
|
|
|
#ifdef USE_FAR_KEYWORD
|
|
/* Use this to make far-to-near assignments */
|
|
# define CHECK 1
|
|
# define NOCHECK 0
|
|
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
|
|
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
|
|
# define png_strcpy _fstrcpy
|
|
# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
|
|
# define png_strlen _fstrlen
|
|
# define png_memcmp _fmemcmp /* SJT: added */
|
|
# define png_memcpy _fmemcpy
|
|
# define png_memset _fmemset
|
|
# define png_sprintf sprintf
|
|
#else
|
|
# ifdef _WINDOWS_ /* Favor Windows over C runtime fns */
|
|
# define CVT_PTR(ptr) (ptr)
|
|
# define CVT_PTR_NOCHECK(ptr) (ptr)
|
|
# define png_strcpy lstrcpyA
|
|
# define png_strncpy lstrcpynA
|
|
# define png_strlen lstrlenA
|
|
# define png_memcmp memcmp
|
|
# define png_memcpy CopyMemory
|
|
# define png_memset memset
|
|
# define png_sprintf wsprintfA
|
|
# else
|
|
# define CVT_PTR(ptr) (ptr)
|
|
# define CVT_PTR_NOCHECK(ptr) (ptr)
|
|
# define png_strcpy strcpy
|
|
# define png_strncpy strncpy /* Added to v 1.2.6 */
|
|
# define png_strlen strlen
|
|
# define png_memcmp memcmp /* SJT: added */
|
|
# define png_memcpy memcpy
|
|
# define png_memset memset
|
|
# define png_sprintf sprintf
|
|
# ifndef PNG_NO_SNPRINTF
|
|
# ifdef _MSC_VER
|
|
# define png_snprintf _snprintf /* Added to v 1.2.19 */
|
|
# define png_snprintf2 _snprintf
|
|
# define png_snprintf6 _snprintf
|
|
# else
|
|
# define png_snprintf snprintf /* Added to v 1.2.19 */
|
|
# define png_snprintf2 snprintf
|
|
# define png_snprintf6 snprintf
|
|
# endif
|
|
# else
|
|
/* You don't have or don't want to use snprintf(). Caution: Using
|
|
* sprintf instead of snprintf exposes your application to accidental
|
|
* or malevolent buffer overflows. If you don't have snprintf()
|
|
* as a general rule you should provide one (you can get one from
|
|
* Portable OpenSSH).
|
|
*/
|
|
# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
|
|
# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
|
|
# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
|
|
sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
/* png_alloc_size_t is guaranteed to be no smaller than png_size_t,
|
|
* and no smaller than png_uint_32. Casts from png_size_t or png_uint_32
|
|
* to png_alloc_size_t are not necessary; in fact, it is recommended
|
|
* not to use them at all so that the compiler can complain when something
|
|
* turns out to be problematic.
|
|
* Casts in the other direction (from png_alloc_size_t to png_size_t or
|
|
* png_uint_32) should be explicitly applied; however, we do not expect
|
|
* to encounter practical situations that require such conversions.
|
|
*/
|
|
#if defined(__TURBOC__) && !defined(__FLAT__)
|
|
# define png_mem_alloc farmalloc
|
|
# define png_mem_free farfree
|
|
typedef unsigned long png_alloc_size_t;
|
|
#else
|
|
# if defined(_MSC_VER) && defined(MAXSEG_64K)
|
|
# define png_mem_alloc(s) halloc(s, 1)
|
|
# define png_mem_free hfree
|
|
typedef unsigned long png_alloc_size_t;
|
|
# else
|
|
# if defined(_WINDOWS_) && (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
|
|
# define png_mem_alloc(s) HeapAlloc(GetProcessHeap(), 0, s)
|
|
# define png_mem_free(p) HeapFree(GetProcessHeap(), 0, p)
|
|
typedef DWORD png_alloc_size_t;
|
|
# else
|
|
# define png_mem_alloc malloc
|
|
# define png_mem_free free
|
|
typedef png_size_t png_alloc_size_t;
|
|
# endif
|
|
# endif
|
|
#endif
|
|
/* End of memory model/platform independent support */
|
|
|
|
#endif /* PNGCONF_H */
|