mirror of
https://git.code.sf.net/p/libpng/code.git
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Imported from libpng-0.85.tar
This commit is contained in:
Guy Schalnat
committed by
Glenn Randers-Pehrson
Glenn Randers-Pehrson
parent
0f71645dfe
commit
6d76471acd
124
pngconf.h
124
pngconf.h
@@ -1,10 +1,10 @@
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/* pngconf.c - machine configurable file for libpng
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libpng 1.0 beta 2 - version 0.81
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libpng 1.0 beta 2 - version 0.85
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For conditions of distribution and use, see copyright notice in png.h
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Copyright (c) 1995 Guy Eric Schalnat, Group 42, Inc.
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August 24, 1995
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December 19, 1995
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*/
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/* Any machine specific code is near the front of this file, so if you
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@@ -27,7 +27,7 @@
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Unless this gets smaller then the size of a row (compressed),
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it should not make much difference how big this is. */
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#define PNG_ZBUF_SIZE 32768
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#define PNG_ZBUF_SIZE 8192
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/* While libpng currently uses zlib for it's compression, it has been designed
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to stand on it's own. Towards this end, there are two defines that are
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@@ -48,6 +48,14 @@
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#define PNG_MAX_ALLOC_64K
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#endif
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/* this protects us against compilers which run on a windowing system
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and thus don't have or would rather us not use the stdio types:
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stdin, stdout, and stderr. The only one currently used is stderr
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in png_error() and png_warning(). #defining PNG_NO_STDIO will
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prevent these from being compiled and used. */
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/* #define PNG_NO_STDIO */
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/* this macro protects us against machines that don't have function
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prototypes. If your compiler does not handle function prototypes,
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define this macro. I've always been able to use _NO_PROTO as the
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@@ -60,7 +68,7 @@
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#else
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#ifdef _NO_PROTO
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#define PNGARG(arglist)
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#define PNGARG(arglist) ()
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#else
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#define PNGARG(arglist) arglist
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#endif /* _NO_PROTO */
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@@ -129,6 +137,19 @@
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#endif /* PNG_INTERNAL */
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/* the following uses const char * instead of char * for error
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and warning message functions, so some compilers won't complain.
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If you want to use const, define PNG_USE_CONST here. It is not
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normally defined to make configuration easier, as it is not a
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critical part of the code.
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*/
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#ifdef PNG_USE_CONST
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# define PNG_CONST const
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#else
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# define PNG_CONST
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#endif
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/* The following defines give you the ability to remove code
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from the library that you will not be using. I wish I
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could figure out how to automate this, but I can't do
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@@ -144,7 +165,7 @@
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*/
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/* Any transformations you will not be using can be undef'ed here */
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#define PNG_PROGRESSIVE_READ_SUPPORTED
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#define PNG_READ_INTERLACING_SUPPORTED
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#define PNG_READ_EXPAND_SUPPORTED
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#define PNG_READ_SHIFT_SUPPORTED
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@@ -214,25 +235,105 @@ typedef unsigned char png_byte;
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change (I'm not sure if you will or not, so I thought I'd be safe) */
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typedef size_t png_size_t;
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/* The following is needed for medium model support. It cannot be in the
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PNG_INTERNAL section. Needs modification for other compilers besides
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/* The following is needed for medium model support. It cannot be in the
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PNG_INTERNAL section. Needs modification for other compilers besides
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MSC. Model independent support declares all arrays that might be very
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large using the far keyword. The Zlib version used must also support
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model independent data. As of version Zlib .95, the necessary changes
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model independent data. As of version Zlib .95, the necessary changes
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have been made in Zlib. The USE_FAR_KEYWORD define triggers other
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changes that are needed. Most of the far keyword changes are hidden
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inside typedefs with suffix "f". Tim Wegner */
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#if defined(FAR) && defined(M_I86MM) /* MSC Medium model */
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# define USE_FAR_KEYWORD
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/* SJT: Separate compiler dependencies */
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/* SJT: problem here is that zlib.h always defines FAR */
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#ifdef __BORLANDC__
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#if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
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#define LDATA 1
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#else
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#define LDATA 0
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#endif
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#if !defined(__WIN32__) && !defined(__FLAT__)
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#define PNG_MAX_MALLOC_64K
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#if (LDATA != 1)
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#ifndef FAR
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#define FAR __far
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#endif
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#define USE_FAR_KEYWORD
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#endif /* LDATA != 1 */
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/* SJT: Possibly useful for moving data out of default segment.
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Uncomment it if you want. Could also define FARDATA as const
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if your compiler supports it.
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# define FARDATA FAR
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*/
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#endif /* __WIN32__, __FLAT__ */
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#endif /* __BORLANDC__ */
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/* SJT: Suggest testing for specific compiler first before
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testing for FAR. The Watcom compiler defines both __MEDIUM__
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and M_I86MM, making reliance oncertain keywords suspect
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*/
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/* MSC Medium model */
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#if defined(FAR)
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# if defined(M_I86MM)
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# define USE_FAR_KEYWORD
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# define FARDATA FAR /* SJT: added */
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# endif
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#endif
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/* SJT: default case */
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#ifndef FAR
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# define FAR
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#endif
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/* SJT: At this point FAR is always defined */
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/* not used anymore, but kept for compatability */
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typedef unsigned char FAR png_bytef;
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/* SJT: */
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#ifndef FARDATA
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#define FARDATA
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#endif
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/* End medium model changes to be in zconf.h */
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/* SJT: More typedefs */
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typedef void FAR * png_voidp;
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/* SJT: Add typedefs for pointers */
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typedef png_byte FAR * png_bytep;
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typedef png_uint_32 FAR * png_uint_32p;
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typedef png_int_32 FAR * png_int_32p;
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typedef png_uint_16 FAR * png_uint_16p;
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typedef png_int_16 FAR * png_int_16p;
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typedef PNG_CONST char FAR * png_const_charp;
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typedef char FAR * png_charp;
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/* SJT: Pointers to pointers; i.e. arrays */
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typedef png_byte FAR * FAR * png_bytepp;
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typedef png_uint_32 FAR * FAR * png_uint_32pp;
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typedef png_int_32 FAR * FAR * png_int_32pp;
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typedef png_uint_16 FAR * FAR * png_uint_16pp;
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typedef png_int_16 FAR * FAR * png_int_16pp;
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typedef PNG_CONST char FAR * FAR * png_const_charpp;
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typedef char FAR * FAR * png_charpp;
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/* SJT: libpng typedefs for types in zlib. If Zlib changes
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or another compression library is used, then change these.
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Eliminates need to change all the source files.
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*/
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typedef charf * png_zcharp;
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typedef charf * FAR * png_zcharpp;
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typedef z_stream * png_zstreamp; /* zlib won't accept far z_stream */
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/* User may want to use these so not in PNG_INTERNAL. Any library functions
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that are passed far data must be model independent. */
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#if defined(USE_FAR_KEYWORD) /* memory model independent fns */
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@@ -240,6 +341,7 @@ typedef unsigned char FAR png_bytef;
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# define png_strcat _fstrcat
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# define png_strlen _fstrlen
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# define png_strcmp _fstrcmp
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# define png_memcmp _fmemcmp /* SJT: added */
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# define png_memcpy _fmemcpy
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# define png_memset _fmemset
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#else /* use the usual functions */
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@@ -247,11 +349,11 @@ typedef unsigned char FAR png_bytef;
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# define png_strcat strcat
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# define png_strlen strlen
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# define png_strcmp strcmp
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# define png_memcmp memcmp /* SJT: added */
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# define png_memcpy memcpy
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# define png_memset memset
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#endif
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/* End of memory model independent support */
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#endif /* PNGCONF_H */
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