update window before changing the scrolling position and really scrolling it to avoid...

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

diff --git a/src/png/pngconf.h b/src/png/pngconf.h
index 028f2a1a70cbfa642e1caa47b46ca2c48cfcb79f..867e0a86689b1de20ac3da86fdaaf767dbc1f5b9 100644 (file)
--- a/src/png/pngconf.h
+++ b/src/png/pngconf.h
@@ -1,11 +1,11 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
 
 /* pngconf.h - machine configurable file for libpng
  *

- * libpng 1.0.3 - January 14, 1999
+ * libpng version 1.2.7 - September 12, 2004

  * 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) 1998-2004 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.)

  */
 
 /* 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 +17,9 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
 #ifndef PNGCONF_H
 #define PNGCONF_H
 

+#ifdef PNG_USER_CONFIG
+#include "pngusr.h"
+#endif

 
 /* 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


@@ -32,7 +35,33 @@
  */
 
 #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 by default in 1.2.0.  You can disable this if you don't need to
+   support PNGs that are embedded in MNG datastreams */
+#if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES)
+#  ifndef PNG_MNG_FEATURES_SUPPORTED
+#    define PNG_MNG_FEATURES_SUPPORTED
+#  endif
+#endif
+
+#ifndef PNG_NO_FLOATING_POINT_SUPPORTED
+#  ifndef PNG_FLOATING_POINT_SUPPORTED
+#    define PNG_FLOATING_POINT_SUPPORTED
+#  endif

 #endif
 
 /* If you are running on a machine where you cannot allocate more
 #endif
 
 /* If you are running on a machine where you cannot allocate more


@@ -44,7 +73,85 @@
 #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 and whether GLOBAL_ARRAYS are allowed.
+ */
+#if defined(__CYGWIN__)
+#  if defined(ALL_STATIC)
+#    if defined(PNG_BUILD_DLL)
+#      undef PNG_BUILD_DLL
+#    endif
+#    if defined(PNG_USE_DLL)
+#      undef PNG_USE_DLL
+#    endif
+#    if defined(PNG_DLL)
+#      undef PNG_DLL
+#    endif
+#    if !defined(PNG_STATIC)
+#      define PNG_STATIC
+#    endif
+#  else
+#    if defined (PNG_BUILD_DLL)
+#      if defined(PNG_STATIC)
+#        undef PNG_STATIC
+#      endif
+#      if defined(PNG_USE_DLL)
+#        undef PNG_USE_DLL
+#      endif
+#      if !defined(PNG_DLL)
+#        define PNG_DLL
+#      endif
+#    else
+#      if defined(PNG_STATIC)
+#        if defined(PNG_USE_DLL)
+#          undef PNG_USE_DLL
+#        endif
+#        if defined(PNG_DLL)
+#          undef PNG_DLL
+#        endif
+#      else
+#        if !defined(PNG_USE_DLL)
+#          define PNG_USE_DLL
+#        endif
+#        if !defined(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


@@ -54,25 +161,44 @@
  * 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>
+#if defined(_WIN32_WCE)
+#  include <windows.h>
+   /* Console I/O functions are not supported on WindowsCE */
+#  define PNG_NO_CONSOLE_IO
+#  ifdef PNG_DEBUG
+#    undef PNG_DEBUG

 #  endif
 #  endif

-#else
+#endif
+
+#ifdef PNG_BUILD_DLL
+#  ifndef PNG_CONSOLE_IO_SUPPORTED
+#    ifndef PNG_NO_CONSOLE_IO
+#      define PNG_NO_CONSOLE_IO
+#    endif
+#  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
 #  else

-#    include <stdio.h>
+#    if !defined(_WIN32_WCE)
+/* "stdio.h" functions are not supported on WindowsCE */
+#      include <stdio.h>
+#    endif

 #  endif
 #  endif

-#endif

 
 /* This macro protects us against machines that don't have function
  * prototypes (ie K&R style headers).  If your compiler does not handle
 
 /* This macro protects us against machines that don't have function
  * prototypes (ie K&R style headers).  If your compiler does not handle


@@ -84,13 +210,16 @@
 #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) ()
+#  ifndef PNG_TYPECAST_NULL
+#     define PNG_TYPECAST_NULL
+#  endif

 #else
 #else

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

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


@@ -102,49 +231,60 @@
  * 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(__DMC__))|| defined(TARGET_OS_MAC)
+#    define MACOS
+#  endif

 #endif
 
 /* enough people need this for various reasons to include it here */
 #endif
 
 /* enough people need this for various reasons to include it here */

-#if !defined(MACOS) && !defined(RISCOS)
-#include <sys/types.h>
+#if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE)
+#  include <sys/types.h>

 #endif
 
 #endif
 

+#if !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.
  */

-#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 _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.
+      */
+         __png.h__ already includes setjmp.h;
+         __dont__ include it again.;
+#    endif
+#  endif /* __linux__ */

 
 

-#ifdef __linux__
-#ifdef _PNG_SAVE_BSD_SOURCE
-#define _BSD_SOURCE
-#undef _PNG_SAVE_BSD_SOURCE
-#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__ */
+#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.  */
 #ifdef PNG_INTERNAL
 #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
 #include <stdlib.h>
 
 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which


@@ -160,34 +300,41 @@ __dont__ include it again
  * them inside an appropriate ifdef/endif pair for portability.
  */
 
  * them inside an appropriate ifdef/endif pair for portability.
  */
 

-#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.
- */
-#if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
-#include <fp.h>
-#endif
-#else
-#include <math.h>
+#if defined(PNG_FLOATING_POINT_SUPPORTED)
+#  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.
+      */
+#    if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
+#      include <fp.h>
+#    endif
+#  else
+#    include <math.h>
+#  endif
+#  if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
+     /* Amiga SAS/C: We must include builtin FPU functions when compiling using
+      * MATH=68881
+      */
+#    include <m68881.h>
+#  endif

 #endif
 
 /* Codewarrior on NT has linking problems without this. */
 #endif
 
 /* Codewarrior on NT has linking problems without this. */

-#if defined(__MWERKS__) && defined(WIN32)
-#define PNG_ALWAYS_EXTERN
+#if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__)
+#  define PNG_ALWAYS_EXTERN

 #endif
 
 #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"
+/* This provides the non-ANSI (far) memory allocation routines. */
+#if defined(__TURBOC__) && defined(__MSDOS__)
+#  include <mem.h>
+#  include <alloc.h>

 #endif
 
 #endif
 

-#ifdef _MSC_VER
-#include <malloc.h>
+/* I have no idea why is this necessary... */
+#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
+    defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
+#  include <malloc.h>

 #endif
 
 /* This controls how fine the dithering gets.  As this allocates
 #endif
 
 /* This controls how fine the dithering gets.  As this allocates


@@ -195,13 +342,13 @@ __dont__ include it again
  * with dithering quality can decrease some or all of these.
  */
 #ifndef PNG_DITHER_RED_BITS
  * with dithering quality can decrease some or all of these.
  */
 #ifndef PNG_DITHER_RED_BITS

-#define PNG_DITHER_RED_BITS 5
+#  define PNG_DITHER_RED_BITS 5

 #endif
 #ifndef PNG_DITHER_GREEN_BITS
 #endif
 #ifndef PNG_DITHER_GREEN_BITS

-#define PNG_DITHER_GREEN_BITS 5
+#  define PNG_DITHER_GREEN_BITS 5

 #endif
 #ifndef PNG_DITHER_BLUE_BITS
 #endif
 #ifndef PNG_DITHER_BLUE_BITS

-#define PNG_DITHER_BLUE_BITS 5
+#  define PNG_DITHER_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


@@ -212,14 +359,14 @@ __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 /* PNG_INTERNAL */
 #endif
 
 #endif /* PNG_INTERNAL */


@@ -249,143 +396,234 @@ __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 "*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)

  */
 
  */
 

+/* The size of the png_text structure changed in libpng-1.0.6 when
+ * iTXt is supported.  It is turned off by default, to support old apps
+ * that malloc the png_text structure instead of calling png_set_text()
+ * and letting libpng malloc it.  It will be turned on by default in
+ * libpng-1.3.0.
+ */

 
 

-#if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
-    !defined(PNG_NO_READ_TRANSFORMS)
-#define PNG_READ_TRANSFORMS_SUPPORTED
+#ifndef PNG_iTXt_SUPPORTED
+#  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
+#    define PNG_NO_READ_iTXt
+#  endif
+#  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
+#    define PNG_NO_WRITE_iTXt
+#  endif

 #endif
 #endif

-#if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
-    !defined(PNG_NO_WRITE_TRANSFORMS)
-#define PNG_WRITE_TRANSFORMS_SUPPORTED
+
+/* The following support, added after version 1.0.0, can be turned off here en
+ * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility
+ * with old applications that require the length of png_struct and png_info
+ * to remain unchanged.
+ */
+
+#ifdef PNG_LEGACY_SUPPORTED
+#  define PNG_NO_FREE_ME
+#  define PNG_NO_READ_UNKNOWN_CHUNKS
+#  define PNG_NO_WRITE_UNKNOWN_CHUNKS
+#  define PNG_NO_READ_USER_CHUNKS
+#  define PNG_NO_READ_iCCP
+#  define PNG_NO_WRITE_iCCP
+#  define PNG_NO_READ_iTXt
+#  define PNG_NO_WRITE_iTXt
+#  define PNG_NO_READ_sCAL
+#  define PNG_NO_WRITE_sCAL
+#  define PNG_NO_READ_sPLT
+#  define PNG_NO_WRITE_sPLT
+#  define PNG_NO_INFO_IMAGE
+#  define PNG_NO_READ_RGB_TO_GRAY
+#  define PNG_NO_READ_USER_TRANSFORM
+#  define PNG_NO_WRITE_USER_TRANSFORM
+#  define PNG_NO_USER_MEM
+#  define PNG_NO_READ_EMPTY_PLTE
+#  define PNG_NO_MNG_FEATURES
+#  define PNG_NO_FIXED_POINT_SUPPORTED
+#endif
+
+/* 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
+
+#ifndef PNG_NO_FREE_ME
+#  define PNG_FREE_ME_SUPPORTED
+#endif
+
+#if defined(PNG_READ_SUPPORTED)
+
+#if !defined(PNG_READ_TRANSFORMS_NOT_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_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

 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 
 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 
 #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 */
               /* still have interlacing unless you change the following line: */
 #endif                               /* about interlacing capability!  You'll */
               /* still have interlacing unless you change the following line: */

+

 #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 */
+#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
 

-#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
+/* Deprecated, will be removed from version 2.0.0.
+   Use PNG_MNG_FEATURES_SUPPORTED instead. */
+#ifndef PNG_NO_READ_EMPTY_PLTE
+#  define PNG_READ_EMPTY_PLTE_SUPPORTED

 #endif
 #endif

-#ifndef PNG_NO_WRITE_FILLER
-#define PNG_WRITE_FILLER_SUPPORTED  /* This is the 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 /* PNG_READ_SUPPORTED */
+
+#if defined(PNG_WRITE_SUPPORTED)
+
+# if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
+    !defined(PNG_NO_WRITE_TRANSFORMS)
+#  define PNG_WRITE_TRANSFORMS_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
+#  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 */
 
 #define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
                                             encoders, but can cause trouble
                                             if left undefined */
 
 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
 
 #define PNG_WRITE_INTERLACING_SUPPORTED  /* not required for PNG-compliant
                                             encoders, but can cause trouble
                                             if left undefined */
 

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

 #endif
 
 #ifndef PNG_NO_WRITE_FLUSH
 #endif
 
 #ifndef PNG_NO_WRITE_FLUSH

-#define PNG_WRITE_FLUSH_SUPPORTED
+#  define PNG_WRITE_FLUSH_SUPPORTED
+#endif
+
+/* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
+#ifndef PNG_NO_WRITE_EMPTY_PLTE
+#  define PNG_WRITE_EMPTY_PLTE_SUPPORTED
+#endif
+
+#endif /* PNG_WRITE_SUPPORTED */
+
+#ifndef PNG_1_0_X
+#  ifndef PNG_NO_ERROR_NUMBERS
+#    define PNG_ERROR_NUMBERS_SUPPORTED
+#  endif
+#endif /* PNG_1_0_X */
+
+#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
 
 #ifndef PNG_NO_STDIO
 #endif
 
 #ifndef PNG_NO_STDIO

-#define 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


@@ -404,22 +642,74 @@ __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
+
+/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
+   even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
+#if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
+#  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
+#    define PNG_ASSEMBLER_CODE_SUPPORTED
+#  endif
+#  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
+#    define PNG_MMX_CODE_SUPPORTED
+#  endif
+#endif
+
+/* If you are sure that you don't need thread safety and you are compiling
+   with PNG_USE_PNGCCRD for an MMX application, you can define this for
+   faster execution.  See pnggccrd.c.
+#define PNG_THREAD_UNSAFE_OK
+*/
+
+#if !defined(PNG_1_0_X)
+#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
+#  define PNG_USER_MEM_SUPPORTED
+#endif
+#endif /* PNG_1_0_X */
+
+/* Added at libpng-1.2.6 */
+#if !defined(PNG_1_0_X)
+#ifndef PNG_SET_USER_LIMITS_SUPPORTED
+#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
+#  define PNG_SET_USER_LIMITS_SUPPORTED
+#endif
+#endif
+#endif /* PNG_1_0_X */
+
+/* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
+ * how large, set these 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
 
 /* These are currently experimental features, define them if you want */
 
 /* very little testing */
 /*
 #endif
 
 /* These are currently experimental features, define them if you want */
 
 /* 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
+*/
+
+/* Buggy compilers (e.g., gcc 2.7.2.2) need this */
+/*
+#define PNG_NO_POINTER_INDEXING

 */
 
 /* These functions are turned off by default, as they will be phased out. */
 */
 
 /* These functions are turned off by default, as they will be phased out. */


@@ -434,105 +724,274 @@ __dont__ include it again
  * a bit smaller.
  */
 
  * a bit smaller.
  */
 

-#if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
+#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) && \
+
+#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_UNKNOWN_CHUNKS
+#  define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
+#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#  endif
+#endif
+#if !defined(PNG_NO_READ_USER_CHUNKS) && \
+     defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
+#  define PNG_READ_USER_CHUNKS_SUPPORTED
+#  define PNG_USER_CHUNKS_SUPPORTED
+#  ifdef PNG_NO_READ_UNKNOWN_CHUNKS
+#    undef PNG_NO_READ_UNKNOWN_CHUNKS
+#  endif
+#  ifdef PNG_NO_HANDLE_AS_UNKNOWN
+#    undef PNG_NO_HANDLE_AS_UNKNOWN
+#  endif

 #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 */
 
 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 #endif /* PNG_READ_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
+#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
+#  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#     ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#       define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#     endif
+#  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

+

 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
 
 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_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 reading tIME chunks */
 /* need the time information for reading tIME chunks */

-#if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED)
-#include <time.h>
+#if defined(PNG_tIME_SUPPORTED)
+#  if !defined(_WIN32_WCE)
+     /* "time.h" functions are not supported on WindowsCE */
+#    include <time.h>
+#  endif

 #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


@@ -552,7 +1011,13 @@ 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) */
 
 /* 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_SIZE_T
+   typedef PNG_SIZE_T png_size_t;
+#  define png_sizeof(x) png_convert_size(sizeof (x))
+#else
+   typedef size_t png_size_t;
+#  define png_sizeof(x) sizeof (x)
+#endif

 
 /* The following is needed for medium model support.  It cannot be in the
  * PNG_INTERNAL section.  Needs modification for other compilers besides
 
 /* The following is needed for medium model support.  It cannot be in the
  * PNG_INTERNAL section.  Needs modification for other compilers besides


@@ -566,28 +1031,26 @@ typedef size_t png_size_t;
 /* Separate compiler dependencies (problem here is that zlib.h always
    defines FAR. (SJT) */
 #ifdef __BORLANDC__
 /* 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
- */
-#endif  /* __WIN32__, __FLAT__ */
-
+#  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__ */
 
 


@@ -599,22 +1062,26 @@ typedef size_t png_size_t;
 /* MSC Medium model */
 #if defined(FAR)
 #  if defined(M_I86MM)
 /* MSC Medium model */
 #if defined(FAR)
 #  if defined(M_I86MM)

-#     define USE_FAR_KEYWORD
-#     define FARDATA FAR
-#     include <dos.h>
+#    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 +1091,19 @@ 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
+#if defined(_WIN32_WCE)
+typedef HANDLE                png_FILE_p;
+#else
+typedef FILE                * png_FILE_p;
+#endif
+#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;


@@ -634,9 +1113,12 @@ 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;
 
 /* libpng typedefs for types in zlib. If zlib changes
 typedef char            FAR * FAR * FAR * png_charppp;
 
 /* libpng typedefs for types in zlib. If zlib changes


@@ -647,59 +1129,266 @@ typedef charf *         png_zcharp;
 typedef charf * FAR *   png_zcharpp;
 typedef z_stream FAR *  png_zstreamp;
 
 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
+/*
+ * 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 CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
+ * When building a static lib, default to no GLOBAL ARRAYS, but allow
+ * command-line override
+ */
+#if defined(__CYGWIN__)
+#  if !defined(PNG_STATIC)
+#    if defined(PNG_USE_GLOBAL_ARRAYS)
+#      undef PNG_USE_GLOBAL_ARRAYS
+#    endif
+#    if !defined(PNG_USE_LOCAL_ARRAYS)
+#      define PNG_USE_LOCAL_ARRAYS
+#    endif
+#  else
+#    if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
+#      if defined(PNG_USE_GLOBAL_ARRAYS)
+#        undef PNG_USE_GLOBAL_ARRAYS
+#      endif
+#    endif
+#  endif
+#  if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
+#    define PNG_USE_LOCAL_ARRAYS
+#  endif
+#endif
+
+/* Do not use global arrays (helps with building DLL's)
+ * They are no longer used in libpng itself, since version 1.0.5c,
+ * but might be required for some pre-1.0.5c applications.
+ */
+#if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
+#  if defined(PNG_NO_GLOBAL_ARRAYS) || (defined(__GNUC__) && defined(PNG_DLL))
+#    define PNG_USE_LOCAL_ARRAYS
+#  else
+#    define PNG_USE_GLOBAL_ARRAYS
+#  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
+#if defined(__CYGWIN__) || defined(__WINE__)
+#  undef PNGAPI
+#  if defined(__WINE__)
+#    define PNGAPI
+#  else
+#    define PNGAPI __cdecl
+#  endif
+#  undef PNG_IMPEXP
+#  define PNG_IMPEXP
+#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.
+ */
+
+#if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
+#  ifndef PNG_NO_MODULEDEF
+#    define PNG_NO_MODULEDEF
+#  endif

 #endif
 
 #endif
 

-/* allow for compilation as shared lib under BeOS */
-#ifdef __BEOSDLL__
-#define PNG_EXPORT(type,symbol) __declspec(export) type symbol
+#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
+
+#  if !defined(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
+#           if defined(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
+
+#     if !defined(PNG_IMPEXP)
+#        if defined(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
+
+#if defined(__VISAGECPP__)
+/* I don't compile with this _System linkage for wxWidgets */
+#  ifdef PNGAPI
+#    undef PNGAPI
+#  endif
+#  define PNGAPI _Optlink
+#  define PNG_IMPEXP
+#  define PNG_USE_LOCAL_ARRAYS
+#  ifdef PNG_USE_GLOBAL_ARRAYS
+#    undef PNG_USE_GLOBAL_ARRAYS
+#  endif
+extern const char png_libpng_ver[18];
+#endif
+
+#ifndef PNGAPI
+#  define PNGAPI
+#endif
+#ifndef PNG_IMPEXP
+#  define PNG_IMPEXP

 #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
 
 #endif
 

+#ifdef PNG_USE_GLOBAL_ARRAYS
+#  ifndef PNG_EXPORT_VAR
+#    define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
+#  endif
+#endif

 
 

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

  */
 
  */
 

+#ifndef PNG_ABORT
+#  define PNG_ABORT() abort()
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+#  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
+#else
+#  define png_jmpbuf(png_ptr) \
+   (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
+#endif
+

 #if defined(USE_FAR_KEYWORD)  /* memory model independent fns */
 /* use this to make far-to-near assignments */
 #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
+#  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

 #else /* use the usual functions */
 #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
+#  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

 #endif
 /* End of memory model independent support */
 
 #endif
 /* End of memory model independent support */
 

-/* Just a double check that someone hasn't tried to define something
+/* 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
+
+#ifdef PNG_READ_SUPPORTED
+/* Prior to libpng-1.0.9, this block was in pngasmrd.h */
+#if defined(PNG_INTERNAL)
+
+/* These are the default thresholds before the MMX code kicks in; if either
+ * rowbytes or bitdepth is below the threshold, plain C code is used.  These
+ * can be overridden at runtime via the png_set_mmx_thresholds() call in
+ * libpng 1.2.0 and later.  The values below were chosen by Intel.
+ */
+
+#ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
+#  define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT  128  /*  >=  */
+#endif
+#ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
+#  define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT  9    /*  >=  */
+#endif
+
+/* Set this in the makefile for VC++ on Pentium, not here. */
+/* Platform must be Pentium.  Makefile must assemble and load pngvcrd.c .
+ * MMX will be detected at run time and used if present.
+ */
+#ifdef PNG_USE_PNGVCRD
+#  define PNG_HAVE_ASSEMBLER_COMBINE_ROW
+#  define PNG_HAVE_ASSEMBLER_READ_INTERLACE
+#  define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW

 #endif
 
 #endif
 

+/* Set this in the makefile for gcc/as on Pentium, not here. */
+/* Platform must be Pentium.  Makefile must assemble and load pnggccrd.c .
+ * MMX will be detected at run time and used if present.
+ */
+#ifdef PNG_USE_PNGGCCRD
+#  define PNG_HAVE_ASSEMBLER_COMBINE_ROW
+#  define PNG_HAVE_ASSEMBLER_READ_INTERLACE
+#  define PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
+#endif
+/* - see pnggccrd.c for info about what is currently enabled */
+
+#endif /* PNG_INTERNAL */
+#endif /* PNG_READ_SUPPORTED */
+

 #endif /* PNGCONF_H */
 
 #endif /* PNGCONF_H */