Add some version checks to help compiling on OSX.

[wxWidgets.git] / src / png / pngconf.h

diff --git a/src/png/pngconf.h b/src/png/pngconf.h
index 028f2a1a70cbfa642e1caa47b46ca2c48cfcb79f..7c3f8c1333f8ddb3dbfe309cd975c3302fd86f2c 100644 (file)
--- a/src/png/pngconf.h
+++ b/src/png/pngconf.h
@@ -1,11 +1,16 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
 
 /* pngconf.h - machine configurable file for libpng
  *

- * libpng 1.0.3 - January 14, 1999
+ * libpng version 1.4.4 - September 23, 2010

  * For conditions of distribution and use, see copyright notice in png.h
  * For conditions of distribution and use, see copyright notice in png.h

- * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
- * Copyright (c) 1996, 1997 Andreas Dilger
- * Copyright (c) 1998, 1999 Glenn Randers-Pehrson
+ * 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
  */
 
 /* Any machine specific code is near the front of this file, so if you


@@ -17,6 +22,73 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
 #ifndef PNGCONF_H
 #define PNGCONF_H
 

+#ifdef __DMC__
+#define PNG_NO_SNPRINTF
+#endif
+
+#ifndef PNG_NO_LIMITS_H
+#  include <limits.h>
+#endif
+
+/* Added at libpng-1.2.9 */
+
+/* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure"
+ * script.
+ */
+#ifdef PNG_CONFIGURE_LIBPNG
+#  ifdef HAVE_CONFIG_H
+#    include "config.h"
+#  endif
+#endif
+
+/*
+ * Added at libpng-1.2.8
+ *
+ * PNG_USER_CONFIG has to be defined on the compiler command line. This
+ * includes the resource compiler for Windows DLL configurations.
+ */
+#ifdef PNG_USER_CONFIG
+#  include "pngusr.h"
+#  ifndef PNG_USER_PRIVATEBUILD
+#    define PNG_USER_PRIVATEBUILD
+#  endif
+#endif
+
+/*
+ * If you create a private DLL you should define in "pngusr.h" the following:
+ * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
+ *        the DLL was built>
+ *  e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
+ * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
+ *        distinguish your DLL from those of the official release. These
+ *        correspond to the trailing letters that come after the version
+ *        number and must match your private DLL name>
+ *  e.g. // private DLL "libpng14gx.dll"
+ *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
+ *
+ * The following macros are also at your disposal if you want to complete the
+ * DLL VERSIONINFO structure.
+ * - PNG_USER_VERSIONINFO_COMMENTS
+ * - PNG_USER_VERSIONINFO_COMPANYNAME
+ * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
+ */
+
+#ifdef __STDC__
+#  ifdef SPECIALBUILD
+#    pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\
+     are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.")
+#  endif
+
+#  ifdef PRIVATEBUILD
+#    pragma message("PRIVATEBUILD is deprecated.\
+     Use PNG_USER_PRIVATEBUILD instead.")
+#    define PNG_USER_PRIVATEBUILD PRIVATEBUILD
+#  endif
+#endif /* __STDC__ */
+
+/* End of material added to libpng-1.2.8 */
+
+#ifndef PNG_VERSION_INFO_ONLY

 
 /* This is the size of the compression buffer, and thus the size of
  * an IDAT chunk.  Make this whatever size you feel is best for your
 
 /* This is the size of the compression buffer, and thus the size of
  * an IDAT chunk.  Make this whatever size you feel is best for your


@@ -32,9 +104,72 @@
  */
 
 #ifndef PNG_ZBUF_SIZE
  */
 
 #ifndef PNG_ZBUF_SIZE

-#define PNG_ZBUF_SIZE 8192
+#  define PNG_ZBUF_SIZE 8192
+#endif
+
+/* Enable if you want a write-only libpng */
+
+#ifndef PNG_NO_READ_SUPPORTED
+#  define PNG_READ_SUPPORTED
+#endif
+
+/* Enable if you want a read-only libpng */
+
+#ifndef PNG_NO_WRITE_SUPPORTED
+#  define PNG_WRITE_SUPPORTED
+#endif
+
+/* Enabled in 1.4.0. */
+#ifdef PNG_ALLOW_BENIGN_ERRORS
+#  define png_benign_error png_warning
+#  define png_chunk_benign_error png_chunk_warning
+#else
+#  ifndef PNG_BENIGN_ERRORS_SUPPORTED
+#    define png_benign_error png_error
+#    define png_chunk_benign_error png_chunk_error
+#  endif
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED)
+#  define PNG_WARNINGS_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ERROR_TEXT) && !defined(PNG_ERROR_TEXT_SUPPORTED)
+#  define PNG_ERROR_TEXT_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED)
+#  define PNG_CHECK_cHRM_SUPPORTED
+#endif
+
+/* Added at libpng version 1.4.0 */
+#if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED)
+#  define PNG_ALIGNED_MEMORY_SUPPORTED
+#endif
+
+/* Enabled by default in 1.2.0.  You can disable this if you don't need to
+   support PNGs that are embedded in MNG datastreams */
+#ifndef PNG_NO_MNG_FEATURES
+#  ifndef PNG_MNG_FEATURES_SUPPORTED
+#    define PNG_MNG_FEATURES_SUPPORTED
+#  endif

 #endif
 
 #endif
 

+/* Added at libpng version 1.4.0 */
+#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
+#  ifndef PNG_FLOATING_POINT_SUPPORTED
+#    define PNG_FLOATING_POINT_SUPPORTED
+#  endif
+#endif
+
+/* Added at libpng-1.4.0beta49 for testing (this test is no longer used
+   in libpng and png_calloc() is always present)
+ */
+#define PNG_CALLOC_SUPPORTED
+

 /* If you are running on a machine where you cannot allocate more
  * than 64K of memory at once, uncomment this.  While libpng will not
  * normally need that much memory in a chunk (unless you load up a very
 /* If you are running on a machine where you cannot allocate more
  * than 64K of memory at once, uncomment this.  While libpng will not
  * normally need that much memory in a chunk (unless you load up a very


@@ -44,7 +179,85 @@
 #define PNG_MAX_MALLOC_64K
  */
 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
 #define PNG_MAX_MALLOC_64K
  */
 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)

-#define PNG_MAX_MALLOC_64K
+#  define PNG_MAX_MALLOC_64K
+#endif
+
+/* Special munging to support doing things the 'cygwin' way:
+ * 'Normal' png-on-win32 defines/defaults:
+ *   PNG_BUILD_DLL -- building dll
+ *   PNG_USE_DLL   -- building an application, linking to dll
+ *   (no define)   -- building static library, or building an
+ *                    application and linking to the static lib
+ * 'Cygwin' defines/defaults:
+ *   PNG_BUILD_DLL -- (ignored) building the dll
+ *   (no define)   -- (ignored) building an application, linking to the dll
+ *   PNG_STATIC    -- (ignored) building the static lib, or building an
+ *                    application that links to the static lib.
+ *   ALL_STATIC    -- (ignored) building various static libs, or building an
+ *                    application that links to the static libs.
+ * Thus,
+ * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
+ * this bit of #ifdefs will define the 'correct' config variables based on
+ * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
+ * unnecessary.
+ *
+ * Also, the precedence order is:
+ *   ALL_STATIC (since we can't #undef something outside our namespace)
+ *   PNG_BUILD_DLL
+ *   PNG_STATIC
+ *   (nothing) == PNG_USE_DLL
+ *
+ * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
+ *   of auto-import in binutils, we no longer need to worry about
+ *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
+ *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
+ *   to __declspec() stuff.  However, we DO need to worry about
+ *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
+ *   such as CONSOLE_IO.
+ */
+#ifdef __CYGWIN__
+#  ifdef ALL_STATIC
+#    ifdef PNG_BUILD_DLL
+#      undef PNG_BUILD_DLL
+#    endif
+#    ifdef PNG_USE_DLL
+#      undef PNG_USE_DLL
+#    endif
+#    ifdef PNG_DLL
+#      undef PNG_DLL
+#    endif
+#    ifndef PNG_STATIC
+#      define PNG_STATIC
+#    endif
+#  else
+#    ifdef PNG_BUILD_DLL
+#      ifdef PNG_STATIC
+#        undef PNG_STATIC
+#      endif
+#      ifdef PNG_USE_DLL
+#        undef PNG_USE_DLL
+#      endif
+#      ifndef PNG_DLL
+#        define PNG_DLL
+#      endif
+#    else
+#      ifdef PNG_STATIC
+#        ifdef PNG_USE_DLL
+#          undef PNG_USE_DLL
+#        endif
+#        ifdef PNG_DLL
+#          undef PNG_DLL
+#        endif
+#      else
+#        ifndef PNG_USE_DLL
+#          define PNG_USE_DLL
+#        endif
+#        ifndef PNG_DLL
+#          define PNG_DLL
+#        endif
+#      endif
+#    endif
+#  endif

 #endif
 
 /* This protects us against compilers that run on a windowing system
 #endif
 
 /* This protects us against compilers that run on a windowing system


@@ -54,24 +267,46 @@
  * prevent these from being compiled and used. #defining PNG_NO_STDIO
  * will also prevent these, plus will prevent the entire set of stdio
  * macros and functions (FILE *, printf, etc.) from being compiled and used,
  * prevent these from being compiled and used. #defining PNG_NO_STDIO
  * will also prevent these, plus will prevent the entire set of stdio
  * macros and functions (FILE *, printf, etc.) from being compiled and used,

- * unless PNG_DEBUG has been #defined.
+ * unless (PNG_DEBUG > 0) has been #defined.

  *
  * #define PNG_NO_CONSOLE_IO
  * #define PNG_NO_STDIO
  */
 
  *
  * #define PNG_NO_CONSOLE_IO
  * #define PNG_NO_STDIO
  */
 

-#ifdef PNG_DEBUG
-#  if (PNG_DEBUG > 0)
-#    include <stdio.h>
+#ifdef _WIN32_WCE
+#  define PNG_NO_CONSOLE_IO
+#  define PNG_NO_STDIO
+#  define PNG_NO_TIME_RFC1123
+#  ifdef PNG_DEBUG
+#    undef PNG_DEBUG

 #  endif
 #  endif

-#else
+#endif
+
+#if !defined(PNG_NO_STDIO) && !defined(PNG_STDIO_SUPPORTED)
+#  define PNG_STDIO_SUPPORTED
+#endif
+
+#ifdef PNG_BUILD_DLL
+#  if !defined(PNG_CONSOLE_IO_SUPPORTED) && !defined(PNG_NO_CONSOLE_IO)
+#    define PNG_NO_CONSOLE_IO
+#  endif
+#endif
+

 #  ifdef PNG_NO_STDIO
 #    ifndef PNG_NO_CONSOLE_IO
 #      define PNG_NO_CONSOLE_IO
 #    endif
 #  ifdef PNG_NO_STDIO
 #    ifndef PNG_NO_CONSOLE_IO
 #      define PNG_NO_CONSOLE_IO
 #    endif

+#    ifdef PNG_DEBUG
+#      if (PNG_DEBUG > 0)
+#        include <stdio.h>
+#      endif
+#    endif

 #  else
 #    include <stdio.h>
 #  endif
 #  else
 #    include <stdio.h>
 #  endif

+
+#if !(defined PNG_NO_CONSOLE_IO) && !defined(PNG_CONSOLE_IO_SUPPORTED)
+#  define PNG_CONSOLE_IO_SUPPORTED

 #endif
 
 /* This macro protects us against machines that don't have function
 #endif
 
 /* This macro protects us against machines that don't have function


@@ -84,13 +319,13 @@
 #ifndef PNGARG
 
 #ifdef OF /* zlib prototype munger */
 #ifndef PNGARG
 
 #ifdef OF /* zlib prototype munger */

-#define PNGARG(arglist) OF(arglist)
+#  define PNGARG(arglist) OF(arglist)

 #else
 
 #ifdef _NO_PROTO
 #else
 
 #ifdef _NO_PROTO

-#define PNGARG(arglist) ()
+#  define PNGARG(arglist) ()

 #else
 #else

-#define PNGARG(arglist) arglist
+#  define PNGARG(arglist) arglist

 #endif /* _NO_PROTO */
 
 #endif /* OF */
 #endif /* _NO_PROTO */
 
 #endif /* OF */


@@ -102,106 +337,98 @@
  * on non-Mac platforms.
  */
 #ifndef MACOS
  * on non-Mac platforms.
  */
 #ifndef MACOS

-#if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
-    defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
-#define MACOS
-#endif
+#  if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
+      defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
+#    define MACOS
+#  endif

 #endif
 
 #endif
 

-/* enough people need this for various reasons to include it here */
+/* Enough people need this for various reasons to include it here */

 #if !defined(MACOS) && !defined(RISCOS)
 #if !defined(MACOS) && !defined(RISCOS)

-#include <sys/types.h>
+#  include <sys/types.h>

 #endif
 
 #endif
 

+/* PNG_SETJMP_NOT_SUPPORTED and PNG_NO_SETJMP_SUPPORTED are deprecated. */
+#if !defined(PNG_NO_SETJMP) && \
+    !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED)
+#  define PNG_SETJMP_SUPPORTED
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED

 /* This is an attempt to force a single setjmp behaviour on Linux.  If
  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
 /* This is an attempt to force a single setjmp behaviour on Linux.  If
  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.

+ *
+ * You can bypass this test if you know that your application uses exactly
+ * the same setjmp.h that was included when libpng was built.  Only define
+ * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
+ * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
+ * while building a separate libpng library for general use.

  */
  */

-#ifdef __linux__
-#ifdef _BSD_SOURCE
-#define _PNG_SAVE_BSD_SOURCE
-#undef _BSD_SOURCE
-#endif
-#ifdef _SETJMP_H
-__png.h__ already includes setjmp.h
-__dont__ include it again
-#endif
-#endif /* __linux__ */
-
-/* include setjmp.h for error handling */
-#include <setjmp.h>

 
 

-#ifdef __linux__
-#ifdef _PNG_SAVE_BSD_SOURCE
-#define _BSD_SOURCE
-#undef _PNG_SAVE_BSD_SOURCE
-#endif
-#endif /* __linux__ */
+#  ifndef PNG_SKIP_SETJMP_CHECK
+#    ifdef __linux__
+#      ifdef _BSD_SOURCE
+#        define PNG_SAVE_BSD_SOURCE
+#        undef _BSD_SOURCE
+#      endif
+#      ifdef _SETJMP_H
+       /* If you encounter a compiler error here, see the explanation
+        * near the end of INSTALL.
+        */
+           __pngconf.h__ in libpng already includes setjmp.h;
+           __dont__ include it again.;
+#      endif
+#    endif /* __linux__ */
+#  endif /* PNG_SKIP_SETJMP_CHECK */
+
+   /* Include setjmp.h for error handling */
+#  include <setjmp.h>
+
+#  ifdef __linux__
+#    ifdef PNG_SAVE_BSD_SOURCE
+#      ifdef _BSD_SOURCE
+#        undef _BSD_SOURCE
+#      endif
+#      define _BSD_SOURCE
+#      undef PNG_SAVE_BSD_SOURCE
+#    endif
+#  endif /* __linux__ */
+#endif /* PNG_SETJMP_SUPPORTED */

 
 #ifdef BSD
 
 #ifdef BSD

-#include <strings.h>
+#  include <strings.h>

 #else
 #else

-#include <string.h>
+#  include <string.h>

 #endif
 
 /* Other defines for things like memory and the like can go here.  */
 #endif
 
 /* Other defines for things like memory and the like can go here.  */

-#ifdef PNG_INTERNAL
-#include <stdlib.h>
-
-/* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which
- * aren't usually used outside the library (as far as I know), so it is
- * debatable if they should be exported at all.  In the future, when it is
- * possible to have run-time registry of chunk-handling functions, some of
- * these will be made available again.
-#define PNG_EXTERN extern
- */
-#define PNG_EXTERN

 
 

-/* Other defines specific to compilers can go here.  Try to keep
- * them inside an appropriate ifdef/endif pair for portability.
+/* This controls how fine the quantizing gets.  As this allocates
+ * a largish chunk of memory (32K), those who are not as concerned
+ * with quantizing quality can decrease some or all of these.

  */
 
  */
 

-#if defined(MACOS)
-/* We need to check that <math.h> hasn't already been included earlier
- * as it seems it doesn't agree with <fp.h>, yet we should really use
- * <fp.h> if possible.
+/* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
+ * These migration aids will be removed from libpng-1.5.0.

  */
  */

-#if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
-#include <fp.h>
+#ifdef PNG_DITHER_RED_BITS
+#  define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS

 #endif
 #endif

-#else
-#include <math.h>
-#endif
-
-/* Codewarrior on NT has linking problems without this. */
-#if defined(__MWERKS__) && defined(WIN32)
-#define PNG_ALWAYS_EXTERN
-#endif
-
-/* For some reason, Borland C++ defines memcmp, etc. in mem.h, not
- * stdlib.h like it should (I think).  Or perhaps this is a C++
- * "feature"?
- */
-#ifdef __TURBOC__
-#include <mem.h>
-#include "alloc.h"
+#ifdef PNG_DITHER_GREEN_BITS
+#  define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS

 #endif
 #endif

-
-#ifdef _MSC_VER
-#include <malloc.h>
+#ifdef PNG_DITHER_BLUE_BITS
+#  define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS

 #endif
 
 #endif
 

-/* This controls how fine the dithering gets.  As this allocates
- * a largish chunk of memory (32K), those who are not as concerned
- * with dithering quality can decrease some or all of these.
- */
-#ifndef PNG_DITHER_RED_BITS
-#define PNG_DITHER_RED_BITS 5
+#ifndef PNG_QUANTIZE_RED_BITS
+#  define PNG_QUANTIZE_RED_BITS 5

 #endif
 #endif

-#ifndef PNG_DITHER_GREEN_BITS
-#define PNG_DITHER_GREEN_BITS 5
+#ifndef PNG_QUANTIZE_GREEN_BITS
+#  define PNG_QUANTIZE_GREEN_BITS 5

 #endif
 #endif

-#ifndef PNG_DITHER_BLUE_BITS
-#define PNG_DITHER_BLUE_BITS 5
+#ifndef PNG_QUANTIZE_BLUE_BITS
+#  define PNG_QUANTIZE_BLUE_BITS 5

 #endif
 
 /* This controls how fine the gamma correction becomes when you
 #endif
 
 /* This controls how fine the gamma correction becomes when you


@@ -212,35 +439,37 @@ __dont__ include it again
  */
 
 #ifndef PNG_MAX_GAMMA_8
  */
 
 #ifndef PNG_MAX_GAMMA_8

-#define PNG_MAX_GAMMA_8 11
+#  define PNG_MAX_GAMMA_8 11

 #endif
 
 /* This controls how much a difference in gamma we can tolerate before
  * we actually start doing gamma conversion.
  */
 #ifndef PNG_GAMMA_THRESHOLD
 #endif
 
 /* This controls how much a difference in gamma we can tolerate before
  * we actually start doing gamma conversion.
  */
 #ifndef PNG_GAMMA_THRESHOLD

-#define PNG_GAMMA_THRESHOLD 0.05
+#  define PNG_GAMMA_THRESHOLD 0.05

 #endif
 
 #endif
 

-#endif /* PNG_INTERNAL */
-

 /* The following uses const char * instead of char * for error
  * and warning message functions, so some compilers won't complain.
 /* 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.
+ * If you do not want to use const, define PNG_NO_CONST.

  */
 
  */
 

-#ifndef PNG_NO_CONST
-#  define PNG_CONST const
-#else
-#  define PNG_CONST
+#ifndef PNG_CONST
+#  ifndef PNG_NO_CONST
+#    define PNG_CONST const
+#  else
+#    define PNG_CONST
+#  endif

 #endif
 
 /* The following defines give you the ability to remove code from the
  * library that you will not be using.  I wish I could figure out how to
  * automate this, but I can't do that without making it seriously hard
  * on the users.  So if you are not using an ability, change the #define
 #endif
 
 /* The following defines give you the ability to remove code from the
  * library that you will not be using.  I wish I could figure out how to
  * automate this, but I can't do that without making it seriously hard
  * on the users.  So if you are not using an ability, change the #define

- * to and #undef, and that part of the library will not be compiled.  If
- * your linker can't find a function, you may want to make sure the
+ * to an #undef, or pass in PNG_NO_feature and that part of the library
+ * will not be compiled.
+
+ * If your linker can't find a function, you may want to make sure the

  * ability is defined here.  Some of these depend upon some others being
  * defined.  I haven't figured out all the interactions here, so you may
  * have to experiment awhile to get everything to compile.  If you are
  * ability is defined here.  Some of these depend upon some others being
  * defined.  I haven't figured out all the interactions here, so you may
  * have to experiment awhile to get everything to compile.  If you are


@@ -249,143 +478,203 @@ __dont__ include it again
  * things to happen if the library and/or application ever change.
  */
 
  * things to happen if the library and/or application ever change.
  */
 

-/* Any transformations you will not be using can be undef'ed here */
+/* Any features you will not be using can be undef'ed here */

 
 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user
 
 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user

-   to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS
-   on the compile line, then pick and choose which ones to define without
-   having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED
-   if you only want to have a png-compliant reader/writer but don't need
-   any of the extra transformations.  This saves about 80 kbytes in a
-   typical installation of the library. (PNG_NO_* form added in version
-   1.0.1c, for consistency)
+ * to turn it off with PNG_NO_READ|WRITE_TRANSFORMS on the compile line,
+ * then pick and choose which ones to define without having to edit this
+ * file. It is safe to use the PNG_NO_READ|WRITE_TRANSFORMS
+ * if you only want to have a png-compliant reader/writer but don't need
+ * any of the extra transformations.  This saves about 80 kbytes in a
+ * typical installation of the library. (PNG_NO_* form added in version
+ * 1.0.1c, for consistency; PNG_*_TRANSFORMS_NOT_SUPPORTED deprecated in
+ * 1.4.0)

  */
 
  */
 

+/* Ignore attempt to turn off both floating and fixed point support */
+#if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
+    !defined(PNG_NO_FIXED_POINT_SUPPORTED)
+#  define PNG_FIXED_POINT_SUPPORTED
+#endif
+
+#ifdef PNG_READ_SUPPORTED

 
 

+/* PNG_READ_TRANSFORMS_NOT_SUPPORTED is deprecated. */

 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \

-    !defined(PNG_NO_READ_TRANSFORMS)
-#define PNG_READ_TRANSFORMS_SUPPORTED
-#endif
-#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
-    !defined(PNG_NO_WRITE_TRANSFORMS)
-#define PNG_WRITE_TRANSFORMS_SUPPORTED
+      !defined(PNG_NO_READ_TRANSFORMS)
+#  define PNG_READ_TRANSFORMS_SUPPORTED

 #endif
 
 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
 #endif
 
 #ifdef PNG_READ_TRANSFORMS_SUPPORTED

-#ifndef PNG_NO_READ_EXPAND
-#define PNG_READ_EXPAND_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_SHIFT
-#define PNG_READ_SHIFT_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_PACK
-#define PNG_READ_PACK_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_BGR
-#define PNG_READ_BGR_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_SWAP
-#define PNG_READ_SWAP_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_PACKSWAP
-#define PNG_READ_PACKSWAP_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_INVERT
-#define PNG_READ_INVERT_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_DITHER
-#define PNG_READ_DITHER_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_BACKGROUND
-#define PNG_READ_BACKGROUND_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_16_TO_8
-#define PNG_READ_16_TO_8_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_FILLER
-#define PNG_READ_FILLER_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_GAMMA
-#define PNG_READ_GAMMA_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_GRAY_TO_RGB
-#define PNG_READ_GRAY_TO_RGB_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_SWAP_ALPHA
-#define PNG_READ_SWAP_ALPHA_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_INVERT_ALPHA
-#define PNG_READ_INVERT_ALPHA_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_STRIP_ALPHA
-#define PNG_READ_STRIP_ALPHA_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_USER_TRANSFORM
-#define PNG_READ_USER_TRANSFORM_SUPPORTED
-#endif
-#ifndef PNG_NO_READ_RGB_TO_GRAY
-#define PNG_READ_RGB_TO_GRAY_SUPPORTED
-#endif
+#  ifndef PNG_NO_READ_EXPAND
+#    define PNG_READ_EXPAND_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_SHIFT
+#    define PNG_READ_SHIFT_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_PACK
+#    define PNG_READ_PACK_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_BGR
+#    define PNG_READ_BGR_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_SWAP
+#    define PNG_READ_SWAP_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_PACKSWAP
+#    define PNG_READ_PACKSWAP_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_INVERT
+#    define PNG_READ_INVERT_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_QUANTIZE
+     /* Prior to libpng-1.4.0 this was PNG_READ_DITHER_SUPPORTED */
+#    ifndef PNG_NO_READ_DITHER  /* This migration aid will be removed */
+#      define PNG_READ_QUANTIZE_SUPPORTED
+#    endif
+#  endif
+#  ifndef PNG_NO_READ_BACKGROUND
+#    define PNG_READ_BACKGROUND_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_16_TO_8
+#    define PNG_READ_16_TO_8_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_FILLER
+#    define PNG_READ_FILLER_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_GAMMA
+#    define PNG_READ_GAMMA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_GRAY_TO_RGB
+#    define PNG_READ_GRAY_TO_RGB_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_SWAP_ALPHA
+#    define PNG_READ_SWAP_ALPHA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_INVERT_ALPHA
+#    define PNG_READ_INVERT_ALPHA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_STRIP_ALPHA
+#    define PNG_READ_STRIP_ALPHA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_USER_TRANSFORM
+#    define PNG_READ_USER_TRANSFORM_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_RGB_TO_GRAY
+#    define PNG_READ_RGB_TO_GRAY_SUPPORTED
+#  endif

 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 
 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 

+/* PNG_PROGRESSIVE_READ_NOT_SUPPORTED is deprecated. */

 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
 #if !defined(PNG_NO_PROGRESSIVE_READ) && \

- !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive   */
-#define PNG_PROGRESSIVE_READ_SUPPORTED       /* reading.  This is not talking */
+ !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED)  /* if you don't do progressive */
+#  define PNG_PROGRESSIVE_READ_SUPPORTED     /* reading.  This is not talking */

 #endif                               /* about interlacing capability!  You'll */
 #endif                               /* about interlacing capability!  You'll */

-              /* still have interlacing unless you change the following line: */
+            /* still have interlacing unless you change the following define: */
+

 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
 
 #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */
 

-#ifndef PNG_NO_READ_COMPOSITED_NODIV
-#define PNG_READ_COMPOSITE_NODIV_SUPPORTED    /* well tested on Intel and SGI */
+/* PNG_NO_SEQUENTIAL_READ_SUPPORTED is deprecated. */
+#if !defined(PNG_NO_SEQUENTIAL_READ) && \
+    !defined(PNG_SEQUENTIAL_READ_SUPPORTED) && \
+    !defined(PNG_NO_SEQUENTIAL_READ_SUPPORTED)
+#  define PNG_SEQUENTIAL_READ_SUPPORTED

 #endif
 
 #endif
 

-#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
-#ifndef PNG_NO_WRITE_SHIFT
-#define PNG_WRITE_SHIFT_SUPPORTED
-#endif
-#ifndef PNG_NO_WRITE_PACK
-#define PNG_WRITE_PACK_SUPPORTED
-#endif
-#ifndef PNG_NO_WRITE_BGR
-#define PNG_WRITE_BGR_SUPPORTED
-#endif
-#ifndef PNG_NO_WRITE_SWAP
-#define PNG_WRITE_SWAP_SUPPORTED
+#ifndef PNG_NO_READ_COMPOSITE_NODIV
+#  ifndef PNG_NO_READ_COMPOSITED_NODIV  /* libpng-1.0.x misspelling */
+#    define PNG_READ_COMPOSITE_NODIV_SUPPORTED   /* well tested on Intel, SGI */
+#  endif

 #endif
 #endif

-#ifndef PNG_NO_WRITE_PACKSWAP
-#define PNG_WRITE_PACKSWAP_SUPPORTED
+
+#if !defined(PNG_NO_GET_INT_32) || defined(PNG_READ_oFFS_SUPPORTED) || \
+    defined(PNG_READ_pCAL_SUPPORTED)
+#  ifndef PNG_GET_INT_32_SUPPORTED
+#    define PNG_GET_INT_32_SUPPORTED
+#  endif

 #endif
 #endif

-#ifndef PNG_NO_WRITE_INVERT
-#define PNG_WRITE_INVERT_SUPPORTED
+
+#endif /* PNG_READ_SUPPORTED */
+
+#ifdef PNG_WRITE_SUPPORTED
+
+/* PNG_WRITE_TRANSFORMS_NOT_SUPPORTED is deprecated. */
+#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+    !defined(PNG_NO_WRITE_TRANSFORMS)
+#  define PNG_WRITE_TRANSFORMS_SUPPORTED

 #endif
 #endif

-#ifndef PNG_NO_WRITE_FILLER
-#define PNG_WRITE_FILLER_SUPPORTED  /* This is the same as WRITE_STRIP_ALPHA */
+
+#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
+#  ifndef PNG_NO_WRITE_SHIFT
+#    define PNG_WRITE_SHIFT_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_PACK
+#    define PNG_WRITE_PACK_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_BGR
+#    define PNG_WRITE_BGR_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_SWAP
+#    define PNG_WRITE_SWAP_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_PACKSWAP
+#    define PNG_WRITE_PACKSWAP_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_INVERT
+#    define PNG_WRITE_INVERT_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_FILLER
+#    define PNG_WRITE_FILLER_SUPPORTED   /* same as WRITE_STRIP_ALPHA */
+#  endif
+#  ifndef PNG_NO_WRITE_SWAP_ALPHA
+#    define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_INVERT_ALPHA
+#    define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#  endif
+#  ifndef PNG_NO_WRITE_USER_TRANSFORM
+#    define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#  endif
+#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
+
+#if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
+    !defined(PNG_WRITE_INTERLACING_SUPPORTED)
+    /* This is not required for PNG-compliant encoders, but can cause
+     * trouble if left undefined
+    */
+#  define PNG_WRITE_INTERLACING_SUPPORTED

 #endif
 #endif

-#ifndef PNG_NO_WRITE_SWAP_ALPHA
-#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
+
+#if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
+    !defined(PNG_WRITE_WEIGHTED_FILTER) && \
+     defined(PNG_FLOATING_POINT_SUPPORTED)
+#  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED

 #endif
 #endif

-#ifndef PNG_NO_WRITE_INVERT_ALPHA
-#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
+
+#ifndef PNG_NO_WRITE_FLUSH
+#  define PNG_WRITE_FLUSH_SUPPORTED

 #endif
 #endif

-#ifndef PNG_NO_WRITE_USER_TRANSFORM
-#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
+
+#if !defined(PNG_NO_SAVE_INT_32) || defined(PNG_WRITE_oFFS_SUPPORTED) || \
+    defined(PNG_WRITE_pCAL_SUPPORTED)
+#  ifndef PNG_SAVE_INT_32_SUPPORTED
+#    define PNG_SAVE_INT_32_SUPPORTED
+#  endif

 #endif
 #endif

-#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */

 
 

-#define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
-                                            encoders, but can cause trouble
-                                            if left undefined */
+#endif /* PNG_WRITE_SUPPORTED */

 
 

-#ifndef PNG_NO_WRITE_WEIGHTED_FILTER
-#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-#endif
+#define PNG_NO_ERROR_NUMBERS

 
 

-#ifndef PNG_NO_WRITE_FLUSH
-#define PNG_WRITE_FLUSH_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+#  ifndef PNG_NO_USER_TRANSFORM_PTR
+#    define PNG_USER_TRANSFORM_PTR_SUPPORTED
+#  endif

 #endif
 
 #endif
 

-#ifndef PNG_NO_STDIO
-#define PNG_TIME_RFC1123_SUPPORTED
+#if defined(PNG_STDIO_SUPPORTED) && !defined(PNG_TIME_RFC1123_SUPPORTED)
+#  define PNG_TIME_RFC1123_SUPPORTED

 #endif
 
 /* This adds extra functions in pngget.c for accessing data from the
 #endif
 
 /* This adds extra functions in pngget.c for accessing data from the


@@ -404,29 +693,107 @@ __dont__ include it again
  * png_get_x_offset_microns()
  * png_get_y_offset_microns()
  */
  * png_get_x_offset_microns()
  * png_get_y_offset_microns()
  */

-#ifndef PNG_NO_EASY_ACCESS
-#define PNG_EASY_ACCESS_SUPPORTED
+#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
+#  define PNG_EASY_ACCESS_SUPPORTED
+#endif
+
+/* Added at libpng-1.2.0 */
+#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
+#  define PNG_USER_MEM_SUPPORTED
+#endif
+
+/* Added at libpng-1.2.6 */
+#ifndef PNG_NO_SET_USER_LIMITS
+#  ifndef PNG_SET_USER_LIMITS_SUPPORTED
+#    define PNG_SET_USER_LIMITS_SUPPORTED
+#  endif
+  /* Feature added at libpng-1.4.0, this flag added at 1.4.1 */
+#  ifndef PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
+#    define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
+#  endif
+  /* Feature added at libpng-1.4.1, this flag added at 1.4.1 */
+#  ifndef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+#    define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
+#  endif
+#endif
+
+/* Added at libpng-1.2.43 */
+#ifndef PNG_USER_LIMITS_SUPPORTED
+#  ifndef PNG_NO_USER_LIMITS
+#    define PNG_USER_LIMITS_SUPPORTED
+#  endif
+#endif
+
+/* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGs no matter
+ * how large, set these two limits to 0x7fffffffL
+ */
+#ifndef PNG_USER_WIDTH_MAX
+#  define PNG_USER_WIDTH_MAX 1000000L
+#endif
+#ifndef PNG_USER_HEIGHT_MAX
+#  define PNG_USER_HEIGHT_MAX 1000000L
+#endif
+
+/* Added at libpng-1.2.43.  To accept all valid PNGs no matter
+ * how large, set these two limits to 0.
+ */
+#ifndef PNG_USER_CHUNK_CACHE_MAX
+#  define PNG_USER_CHUNK_CACHE_MAX 0
+#endif
+
+/* Added at libpng-1.2.43 */
+#ifndef PNG_USER_CHUNK_MALLOC_MAX
+#  define PNG_USER_CHUNK_MALLOC_MAX 0
+#endif
+
+/* Added at libpng-1.4.0 */
+#if !defined(PNG_NO_IO_STATE) && !defined(PNG_IO_STATE_SUPPORTED)
+#  define PNG_IO_STATE_SUPPORTED
+#endif
+
+#ifndef PNG_LITERAL_SHARP
+#  define PNG_LITERAL_SHARP 0x23
+#endif
+#ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
+#  define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
+#endif
+#ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
+#  define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
+#endif
+#ifndef PNG_STRING_NEWLINE
+#define PNG_STRING_NEWLINE "\n"

 #endif
 
 /* These are currently experimental features, define them if you want */
 
 #endif
 
 /* These are currently experimental features, define them if you want */
 

-/* very little testing */
+/* Very little testing */

 /*
 /*

-#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-#define PNG_USER_MEM_SUPPORTED
+#ifdef PNG_READ_SUPPORTED
+#  ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+#    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
+#  endif
+#endif

 */
 
 /* This is only for PowerPC big-endian and 680x0 systems */
 /* some testing */
 /*
 */
 
 /* This is only for PowerPC big-endian and 680x0 systems */
 /* some testing */
 /*

-#define PNG_READ_BIG_ENDIAN_SUPPORTED
+#ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
+#  define PNG_READ_BIG_ENDIAN_SUPPORTED
+#endif

 */
 
 */
 

-/* These functions are turned off by default, as they will be phased out. */
-/*
-#define  PNG_USELESS_TESTS_SUPPORTED
-#define  PNG_CORRECT_PALETTE_SUPPORTED
-*/
+#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
+#  define PNG_USE_READ_MACROS
+#endif
+
+/* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING */
+
+#if !defined(PNG_NO_POINTER_INDEXING) && \
+    !defined(PNG_POINTER_INDEXING_SUPPORTED)
+#  define PNG_POINTER_INDEXING_SUPPORTED
+#endif
+

 
 /* Any chunks you are not interested in, you can undef here.  The
  * ones that allocate memory may be expecially important (hIST,
 
 /* Any chunks you are not interested in, you can undef here.  The
  * ones that allocate memory may be expecially important (hIST,


@@ -434,105 +801,307 @@ __dont__ include it again
  * a bit smaller.
  */
 
  * a bit smaller.
  */
 

-#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+/* The size of the png_text structure changed in libpng-1.0.6 when
+ * iTXt support was added.  iTXt support was turned off by default through
+ * libpng-1.2.x, to support old apps that malloc the png_text structure
+ * instead of calling png_set_text() and letting libpng malloc it.  It
+ * was turned on by default in libpng-1.4.0.
+ */
+
+/* PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
+#if defined(PNG_READ_SUPPORTED) && \
+    !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \

     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
     !defined(PNG_NO_READ_ANCILLARY_CHUNKS)

-#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
+#  define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED

 #endif
 #endif

-#if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+
+/* PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated. */
+#if defined(PNG_WRITE_SUPPORTED) && \
+    !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \

     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
     !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)

-#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
+#  define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED

 #endif
 
 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
 #endif
 
 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED

+
+#ifdef PNG_NO_READ_TEXT
+#  define PNG_NO_READ_iTXt
+#  define PNG_NO_READ_tEXt
+#  define PNG_NO_READ_zTXt
+#endif
+

 #ifndef PNG_NO_READ_bKGD
 #ifndef PNG_NO_READ_bKGD

-#define PNG_READ_bKGD_SUPPORTED
+#  define PNG_READ_bKGD_SUPPORTED
+#  define PNG_bKGD_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_cHRM
 #endif
 #ifndef PNG_NO_READ_cHRM

-#define PNG_READ_cHRM_SUPPORTED
+#  define PNG_READ_cHRM_SUPPORTED
+#  define PNG_cHRM_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_gAMA
 #endif
 #ifndef PNG_NO_READ_gAMA

-#define PNG_READ_gAMA_SUPPORTED
+#  define PNG_READ_gAMA_SUPPORTED
+#  define PNG_gAMA_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_hIST
 #endif
 #ifndef PNG_NO_READ_hIST

-#define PNG_READ_hIST_SUPPORTED
+#  define PNG_READ_hIST_SUPPORTED
+#  define PNG_hIST_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_iCCP
+#  define PNG_READ_iCCP_SUPPORTED
+#  define PNG_iCCP_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_iTXt
+#  ifndef PNG_READ_iTXt_SUPPORTED
+#    define PNG_READ_iTXt_SUPPORTED
+#  endif
+#  ifndef PNG_iTXt_SUPPORTED
+#    define PNG_iTXt_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_READ_oFFs
 #endif
 #ifndef PNG_NO_READ_oFFs

-#define PNG_READ_oFFs_SUPPORTED
+#  define PNG_READ_oFFs_SUPPORTED
+#  define PNG_oFFs_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_pCAL
 #endif
 #ifndef PNG_NO_READ_pCAL

-#define PNG_READ_pCAL_SUPPORTED
+#  define PNG_READ_pCAL_SUPPORTED
+#  define PNG_pCAL_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sCAL
+#  define PNG_READ_sCAL_SUPPORTED
+#  define PNG_sCAL_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_pHYs
 #endif
 #ifndef PNG_NO_READ_pHYs

-#define PNG_READ_pHYs_SUPPORTED
+#  define PNG_READ_pHYs_SUPPORTED
+#  define PNG_pHYs_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_sBIT
 #endif
 #ifndef PNG_NO_READ_sBIT

-#define PNG_READ_sBIT_SUPPORTED
+#  define PNG_READ_sBIT_SUPPORTED
+#  define PNG_sBIT_SUPPORTED
+#endif
+#ifndef PNG_NO_READ_sPLT
+#  define PNG_READ_sPLT_SUPPORTED
+#  define PNG_sPLT_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_sRGB
 #endif
 #ifndef PNG_NO_READ_sRGB

-#define PNG_READ_sRGB_SUPPORTED
+#  define PNG_READ_sRGB_SUPPORTED
+#  define PNG_sRGB_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_tEXt
 #endif
 #ifndef PNG_NO_READ_tEXt

-#define PNG_READ_tEXt_SUPPORTED
+#  define PNG_READ_tEXt_SUPPORTED
+#  define PNG_tEXt_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_tIME
 #endif
 #ifndef PNG_NO_READ_tIME

-#define PNG_READ_tIME_SUPPORTED
+#  define PNG_READ_tIME_SUPPORTED
+#  define PNG_tIME_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_tRNS
 #endif
 #ifndef PNG_NO_READ_tRNS

-#define PNG_READ_tRNS_SUPPORTED
+#  define PNG_READ_tRNS_SUPPORTED
+#  define PNG_tRNS_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_zTXt
 #endif
 #ifndef PNG_NO_READ_zTXt

-#define PNG_READ_zTXt_SUPPORTED
+#  define PNG_READ_zTXt_SUPPORTED
+#  define PNG_zTXt_SUPPORTED

 #endif
 #ifndef PNG_NO_READ_OPT_PLTE
 #endif
 #ifndef PNG_NO_READ_OPT_PLTE

-#define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the optional */
-#endif                              /* PLTE chunk in RGB and RGBA images */
+#  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
+#endif                      /* optional PLTE chunk in RGB and RGBA images */
+#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
+    defined(PNG_READ_zTXt_SUPPORTED)
+#  define PNG_READ_TEXT_SUPPORTED
+#  define PNG_TEXT_SUPPORTED
+#endif
+

 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
 
 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
 

+#ifndef PNG_NO_READ_UNKNOWN_CHUNKS
+#  ifndef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_READ_USER_CHUNKS_SUPPORTED
+#    define PNG_READ_USER_CHUNKS_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_READ_USER_CHUNKS
+#  ifndef PNG_READ_USER_CHUNKS_SUPPORTED
+#    define PNG_READ_USER_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_USER_CHUNKS_SUPPORTED
+#    define PNG_USER_CHUNKS_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#  endif
+#endif
+
+#ifdef PNG_WRITE_SUPPORTED

 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED

+
+#ifdef PNG_NO_WRITE_TEXT
+#  define PNG_NO_WRITE_iTXt
+#  define PNG_NO_WRITE_tEXt
+#  define PNG_NO_WRITE_zTXt
+#endif

 #ifndef PNG_NO_WRITE_bKGD
 #ifndef PNG_NO_WRITE_bKGD

-#define PNG_WRITE_bKGD_SUPPORTED
+#  define PNG_WRITE_bKGD_SUPPORTED
+#  ifndef PNG_bKGD_SUPPORTED
+#    define PNG_bKGD_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_cHRM
 #endif
 #ifndef PNG_NO_WRITE_cHRM

-#define PNG_WRITE_cHRM_SUPPORTED
+#  define PNG_WRITE_cHRM_SUPPORTED
+#  ifndef PNG_cHRM_SUPPORTED
+#    define PNG_cHRM_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_gAMA
 #endif
 #ifndef PNG_NO_WRITE_gAMA

-#define PNG_WRITE_gAMA_SUPPORTED
+#  define PNG_WRITE_gAMA_SUPPORTED
+#  ifndef PNG_gAMA_SUPPORTED
+#    define PNG_gAMA_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_hIST
 #endif
 #ifndef PNG_NO_WRITE_hIST

-#define PNG_WRITE_hIST_SUPPORTED
+#  define PNG_WRITE_hIST_SUPPORTED
+#  ifndef PNG_hIST_SUPPORTED
+#    define PNG_hIST_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_WRITE_iCCP
+#  define PNG_WRITE_iCCP_SUPPORTED
+#  ifndef PNG_iCCP_SUPPORTED
+#    define PNG_iCCP_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_WRITE_iTXt
+#  ifndef PNG_WRITE_iTXt_SUPPORTED
+#    define PNG_WRITE_iTXt_SUPPORTED
+#  endif
+#  ifndef PNG_iTXt_SUPPORTED
+#    define PNG_iTXt_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_oFFs
 #endif
 #ifndef PNG_NO_WRITE_oFFs

-#define PNG_WRITE_oFFs_SUPPORTED
+#  define PNG_WRITE_oFFs_SUPPORTED
+#  ifndef PNG_oFFs_SUPPORTED
+#    define PNG_oFFs_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_pCAL
 #endif
 #ifndef PNG_NO_WRITE_pCAL

-#define PNG_WRITE_pCAL_SUPPORTED
+#  define PNG_WRITE_pCAL_SUPPORTED
+#  ifndef PNG_pCAL_SUPPORTED
+#    define PNG_pCAL_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_WRITE_sCAL
+#  define PNG_WRITE_sCAL_SUPPORTED
+#  ifndef PNG_sCAL_SUPPORTED
+#    define PNG_sCAL_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_pHYs
 #endif
 #ifndef PNG_NO_WRITE_pHYs

-#define PNG_WRITE_pHYs_SUPPORTED
+#  define PNG_WRITE_pHYs_SUPPORTED
+#  ifndef PNG_pHYs_SUPPORTED
+#    define PNG_pHYs_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_sBIT
 #endif
 #ifndef PNG_NO_WRITE_sBIT

-#define PNG_WRITE_sBIT_SUPPORTED
+#  define PNG_WRITE_sBIT_SUPPORTED
+#  ifndef PNG_sBIT_SUPPORTED
+#    define PNG_sBIT_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_WRITE_sPLT
+#  define PNG_WRITE_sPLT_SUPPORTED
+#  ifndef PNG_sPLT_SUPPORTED
+#    define PNG_sPLT_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_sRGB
 #endif
 #ifndef PNG_NO_WRITE_sRGB

-#define PNG_WRITE_sRGB_SUPPORTED
+#  define PNG_WRITE_sRGB_SUPPORTED
+#  ifndef PNG_sRGB_SUPPORTED
+#    define PNG_sRGB_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_tEXt
 #endif
 #ifndef PNG_NO_WRITE_tEXt

-#define PNG_WRITE_tEXt_SUPPORTED
+#  define PNG_WRITE_tEXt_SUPPORTED
+#  ifndef PNG_tEXt_SUPPORTED
+#    define PNG_tEXt_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_tIME
 #endif
 #ifndef PNG_NO_WRITE_tIME

-#define PNG_WRITE_tIME_SUPPORTED
+#  define PNG_WRITE_tIME_SUPPORTED
+#  ifndef PNG_tIME_SUPPORTED
+#    define PNG_tIME_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_tRNS
 #endif
 #ifndef PNG_NO_WRITE_tRNS

-#define PNG_WRITE_tRNS_SUPPORTED
+#  define PNG_WRITE_tRNS_SUPPORTED
+#  ifndef PNG_tRNS_SUPPORTED
+#    define PNG_tRNS_SUPPORTED
+#  endif

 #endif
 #ifndef PNG_NO_WRITE_zTXt
 #endif
 #ifndef PNG_NO_WRITE_zTXt

-#define PNG_WRITE_zTXt_SUPPORTED
+#  define PNG_WRITE_zTXt_SUPPORTED
+#  ifndef PNG_zTXt_SUPPORTED
+#    define PNG_zTXt_SUPPORTED
+#  endif
+#endif
+#if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
+    defined(PNG_WRITE_zTXt_SUPPORTED)
+#  define PNG_WRITE_TEXT_SUPPORTED
+#  ifndef PNG_TEXT_SUPPORTED
+#    define PNG_TEXT_SUPPORTED
+#  endif

 #endif
 #endif

+
+#ifdef PNG_WRITE_tIME_SUPPORTED
+#  ifndef PNG_NO_CONVERT_tIME
+#    ifndef _WIN32_WCE
+/*   The "tm" structure is not supported on WindowsCE */
+#      ifndef PNG_CONVERT_tIME_SUPPORTED
+#        define PNG_CONVERT_tIME_SUPPORTED
+#      endif
+#   endif
+#  endif
+#endif
+

 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
 
 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
 

-/* need the time information for reading tIME chunks */
-#if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED)
-#include <time.h>
+#ifndef PNG_NO_WRITE_FILTER
+#  ifndef PNG_WRITE_FILTER_SUPPORTED
+#    define PNG_WRITE_FILTER_SUPPORTED
+#  endif
+#endif
+
+#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
+#  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#endif
+#ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#  endif
+#endif
+#endif /* PNG_WRITE_SUPPORTED */
+
+/* Turn this off to disable png_read_png() and
+ * png_write_png() and leave the row_pointers member
+ * out of the info structure.
+ */
+#ifndef PNG_NO_INFO_IMAGE
+#  define PNG_INFO_IMAGE_SUPPORTED
+#endif
+
+/* Need the time information for converting tIME chunks */
+#ifdef PNG_CONVERT_tIME_SUPPORTED
+     /* "time.h" functions are not supported on WindowsCE */
+#    include <time.h>

 #endif
 
 /* Some typedefs to get us started.  These should be safe on most of the
 #endif
 
 /* Some typedefs to get us started.  These should be safe on most of the


@@ -540,22 +1109,29 @@ __dont__ include it again
  * 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
  * 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.  Likewise, for 64-bit systems, you may
- * want to have unsigned int for png_uint_32 instead of unsigned long.
+ * 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;
 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;
 
 typedef unsigned short png_uint_16;
 typedef short png_int_16;
 typedef unsigned char png_byte;
 

-/* This is usually size_t.  It is typedef'ed just in case you need it to
-   change (I'm not sure if you will or not, so I thought I'd be safe) */
-typedef size_t png_size_t;
+#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
 
 /* The following is needed for medium model support.  It cannot be in the

- * PNG_INTERNAL section.  Needs modification for other compilers besides
+ * 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
  * 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


@@ -564,30 +1140,29 @@ typedef size_t png_size_t;
  */
 
 /* Separate compiler dependencies (problem here is that zlib.h always
  */
 
 /* 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
-
-#if !defined(__WIN32__) && !defined(__FLAT__)
-#define PNG_MAX_MALLOC_64K
-#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
+ * defines FAR. (SJT)

  */
  */

-#endif  /* __WIN32__, __FLAT__ */
-
+#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
+#    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__ */
 
 
 #endif   /* __BORLANDC__ */
 
 


@@ -597,24 +1172,28 @@ typedef size_t png_size_t;
  */
 
 /* MSC Medium model */
  */
 
 /* MSC Medium model */

-#if defined(FAR)
-#  if defined(M_I86MM)
-#     define USE_FAR_KEYWORD
-#     define FARDATA FAR
-#     include <dos.h>
+#ifdef FAR
+#  ifdef M_I86MM
+#    define USE_FAR_KEYWORD
+#    define FARDATA FAR
+#    include <dos.h>

 #  endif
 #endif
 
 /* SJT: default case */
 #ifndef FAR
 #  endif
 #endif
 
 /* SJT: default case */
 #ifndef FAR

-#   define FAR
+#  define FAR

 #endif
 
 /* At this point FAR is always defined */
 #ifndef FARDATA
 #endif
 
 /* At this point FAR is always defined */
 #ifndef FARDATA

-#define FARDATA
+#  define FARDATA

 #endif
 
 #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;
 /* Add typedefs for pointers */
 typedef void            FAR * png_voidp;
 typedef png_byte        FAR * png_bytep;


@@ -624,7 +1203,15 @@ 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_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;
+
+#ifndef PNG_NO_STDIO
+typedef FILE                * png_FILE_p;
+#endif
+
+#ifdef PNG_FLOATING_POINT_SUPPORTED

 typedef double          FAR * png_doublep;
 typedef double          FAR * png_doublep;

+#endif

 
 /* Pointers to pointers; i.e. arrays */
 typedef png_byte        FAR * FAR * png_bytepp;
 
 /* Pointers to pointers; i.e. arrays */
 typedef png_byte        FAR * FAR * png_bytepp;


@@ -634,72 +1221,324 @@ 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_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;
 typedef double          FAR * FAR * png_doublepp;

+#endif

 
 

-/* Pointers to pointers to pointers; i.e. pointer to array */
+/* Pointers to pointers to pointers; i.e., pointer to array */

 typedef char            FAR * FAR * FAR * png_charppp;
 
 typedef char            FAR * FAR * FAR * png_charppp;
 

-/* libpng typedefs for types in zlib. If zlib changes
- * or another compression library is used, then change these.
- * Eliminates need to change all the source files.
+/* Define PNG_BUILD_DLL if the module being built is a Windows
+ * LIBPNG DLL.
+ *
+ * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
+ * It is equivalent to Microsoft predefined macro _DLL that is
+ * automatically defined when you compile using the share
+ * version of the CRT (C Run-Time library)
+ *
+ * The cygwin mods make this behavior a little different:
+ * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
+ * Define PNG_STATIC if you are building a static library for use with cygwin,
+ *   -or- if you are building an application that you want to link to the
+ *   static library.
+ * PNG_USE_DLL is defined by default (no user action needed) unless one of
+ *   the other flags is defined.
+ */
+
+#if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
+#  define PNG_DLL
+#endif
+
+/* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
+ * you may get warnings regarding the linkage of png_zalloc and png_zfree.
+ * Don't ignore those warnings; you must also reset the default calling
+ * convention in your compiler to match your PNGAPI, and you must build
+ * zlib and your applications the same way you build libpng.

  */
  */

-typedef charf *         png_zcharp;
-typedef charf * FAR *   png_zcharpp;
-typedef z_stream FAR *  png_zstreamp;

 
 

-/* allow for compilation as dll under MS Windows */
-#ifdef __WIN32DLL__
-#define PNG_EXPORT(type,symbol) __declspec(dllexport) type symbol
+#ifdef __CYGWIN__
+#  undef PNGAPI
+#  define PNGAPI __cdecl
+#  undef PNG_IMPEXP
+#  define PNG_IMPEXP
+#endif
+
+#ifdef __WATCOMC__
+#  ifndef PNGAPI
+#    define PNGAPI
+#  endif
+#endif
+
+#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
+#  ifndef PNG_NO_MODULEDEF
+#    define PNG_NO_MODULEDEF
+#  endif
+#endif
+
+#if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
+#  define PNG_IMPEXP
+#endif
+
+#if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
+    (( defined(_Windows) || defined(_WINDOWS) || \
+       defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
+
+#  ifndef PNGAPI
+#     if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
+#        define PNGAPI __cdecl
+#     else
+#        define PNGAPI _cdecl
+#     endif
+#  endif
+
+#  if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
+       0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
+#     define PNG_IMPEXP
+#  endif
+
+#  ifndef PNG_IMPEXP
+
+#    define PNG_EXPORT_TYPE1(type,symbol)  PNG_IMPEXP type PNGAPI symbol
+#    define PNG_EXPORT_TYPE2(type,symbol)  type PNG_IMPEXP PNGAPI symbol
+
+     /* Borland/Microsoft */
+#    if defined(_MSC_VER) || defined(__BORLANDC__)
+#      if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
+#         define PNG_EXPORT PNG_EXPORT_TYPE1
+#      else
+#         define PNG_EXPORT PNG_EXPORT_TYPE2
+#         ifdef PNG_BUILD_DLL
+#            define PNG_IMPEXP __export
+#         else
+#            define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in VC++ */
+#         endif                              /* Exists in Borland C++ for
+                                                C++ classes (== huge) */
+#      endif
+#    endif
+
+#    ifndef PNG_IMPEXP
+#      ifdef PNG_BUILD_DLL
+#        define PNG_IMPEXP __declspec(dllexport)
+#      else
+#        define PNG_IMPEXP __declspec(dllimport)
+#      endif
+#    endif
+#  endif  /* PNG_IMPEXP */
+#else /* !(DLL || non-cygwin WINDOWS) */
+#   if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
+#     ifndef PNGAPI
+#       define PNGAPI _System
+#     endif
+#   else
+#     if 0 /* ... other platforms, with other meanings */
+#     endif
+#   endif

 #endif
 
 #endif
 

-/* allow for compilation as dll with BORLAND C++ 5.0 */
-#if defined(__BORLANDC__) && defined(_Windows) && defined(__DLL__)
-#   define PNG_EXPORT(type,symbol) type _export symbol
+#ifndef PNGAPI
+#  define PNGAPI
+#endif
+#ifndef PNG_IMPEXP
+#  define PNG_IMPEXP

 #endif
 
 #endif
 

-/* allow for compilation as shared lib under BeOS */
-#ifdef __BEOSDLL__
-#define PNG_EXPORT(type,symbol) __declspec(export) type symbol
+#ifdef PNG_BUILDSYMS
+#  ifndef PNG_EXPORT
+#    define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
+#  endif

 #endif
 
 #ifndef PNG_EXPORT
 #endif
 
 #ifndef PNG_EXPORT

-#define PNG_EXPORT(type,symbol) type symbol
+#  define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
+#endif
+
+#define PNG_USE_LOCAL_ARRAYS /* Not used in libpng, defined for legacy apps */
+
+/* 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
 
 #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 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 /* __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

 
 

-/* User may want to use these so not in PNG_INTERNAL. Any library functions
- * that are passed far data must be model independent.
+/* Users may want to use these so they are not private.  Any library
+ * functions that are passed far data must be model-independent.

  */
 
  */
 

-#if defined(USE_FAR_KEYWORD)  /* memory model independent fns */
-/* 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_strlen _fstrlen
-#   define png_memcmp _fmemcmp      /* SJT: added */
-#   define png_memcpy _fmemcpy
-#   define png_memset _fmemset
-#else /* use the usual functions */
-#   define CVT_PTR(ptr)         (ptr)
-#   define CVT_PTR_NOCHECK(ptr) (ptr)
-#   define png_strcpy strcpy
-#   define png_strlen strlen
-#   define png_memcmp memcmp     /* SJT: added */
-#   define png_memcpy memcpy
-#   define png_memset memset
+/* memory model/platform independent fns */
+#ifndef PNG_ABORT
+#  if (defined(_Windows) || defined(_WINDOWS) || defined(_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
+#  if (defined(_Windows) || defined(_WINDOWS) || defined(_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
+#  endif

 #endif
 #endif

-/* End of memory model independent support */

 
 

-/* Just a double check that someone hasn't tried to define something
+#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) png_sprintf(s1,fmt,x1)
+#  define png_snprintf2(s1,n,fmt,x1,x2) png_sprintf(s1,fmt,x1,x2)
+#  define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
+      png_sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
+#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__)
+   typedef unsigned long png_alloc_size_t;
+#else
+#  if defined(_MSC_VER) && defined(MAXSEG_64K)
+     typedef unsigned long    png_alloc_size_t;
+#  else
+     /* This is an attempt to detect an old Windows system where (int) is
+      * actually 16 bits, in that case png_malloc must have an argument with a
+      * bigger size to accomodate the requirements of the library.
+      */
+#    if (defined(_Windows) || defined(_WINDOWS) || defined(_WINDOWS_)) && \
+        (!defined(INT_MAX) || INT_MAX <= 0x7ffffffeL)
+       typedef DWORD         png_alloc_size_t;
+#    else
+       typedef png_size_t    png_alloc_size_t;
+#    endif
+#  endif
+#endif
+/* End of memory model/platform independent support */
+
+/* Just a little check that someone hasn't tried to define something

  * contradictory.
  */
  * contradictory.
  */

-#if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K)
-#undef PNG_ZBUF_SIZE
-#define PNG_ZBUF_SIZE 65536
+#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
+#  undef PNG_ZBUF_SIZE
+#  define PNG_ZBUF_SIZE 65536L

 #endif
 
 #endif
 

-#endif /* PNGCONF_H */

 
 

+/* Added at libpng-1.2.8 */
+#endif /* PNG_VERSION_INFO_ONLY */
+
+#endif /* PNGCONF_H */