[devel] Imported from libpng-1.5.0beta09.tar

[devel] Removed -D_ALLSOURCE from configure.ac, makefile.aix,
and CMakeLists.txt, and changed the name of png_ptr->jmpbuf in pngstruct.h to png_ptr->png_jmpbuf.
2025-07-10 18:04:09 +02:00 · 2010-02-19 14:13:03 -06:00 · 2010-02-19 14:11:03 -06:00 · 2010-02-19 12:59:44 -06:00 · 2010-02-19 12:50:45 -06:00 · 2010-02-19 11:26:40 -06:00
112 changed files with 1875 additions and 2822 deletions
--- a/91
+++ b/91
@@ -1,54 +1,77 @@

-Libpng 1.4.2 - May 6, 2010
+Libpng 1.5.0beta09 - February 19, 2010

-This is a public release of libpng, intended for use in production codes.
+This is not intended to be a public release.  It will be replaced
+within a few weeks by a public version or by another test version.

 Files available for download:

 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script

-   libpng-1.4.2.tar.xz (LZMA-compressed, recommended)
-   libpng-1.4.2.tar.gz
-   libpng-1.4.2.tar.bz2
+   1.5.0beta09.tar.xz (LZMA-compressed, recommended)
+   1.5.0beta09.tar.gz
+   1.5.0beta09.tar.bz2

 Source files with CRLF line endings (for Windows), without the
 "configure" script

-   lpng142.zip
-   lpng142.7z
+   lp150b09.zip
+   lp150b09.7z

 Other information:

-   libpng-1.4.2-README.txt
-   libpng-1.4.2-LICENSE.txt
+   1.5.0beta09-README.txt
+   1.5.0beta09-LICENSE.txt

 Changes since the last public release (1.4.1):
-  Restored the macro definition of png_check_sig().
-  Conditionally compile an "else" statement in png_decompress_chunk().
-  Documented the fact that png_set_dither() was disabled since libpng-1.4.0.
-  Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect
-    more accurately what it actually does.  At the same time, renamed
-    the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
-    PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
-  Added some "(long)" typecasts to printf calls in png_handle_cHRM().
-  Relaxed the overly-restrictive permissions of some files.
-  Added the "vstudio" project to replace "visualc6" and "visualc71" which
-    will be removed from libpng-1.5.0.
-  Demonstrate in example.c that lang_key should be initialized.
-  Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in
-    contrib/pngminim/decoder/pngusr.h to make a smaller decoder application.
-  Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
-  Removed dummy_inflate.c and uncompr.c from contrib/pngminim/encoder
-  Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-    in gregbook/readpng2.c
-  Corrected protection of png_get_user_transform_ptr. The API declaration in
-    png.h is removed if both READ and WRITE USER_TRANSFORM are turned off
-    but was left defined in pngtrans.c
-  Moved declarations of umsg[] inside the proper #ifdef blocks in pngrutil.c

-Send comments/corrections/commendations to glennrp at users.sourceforge.net
-or to png-mng-implement at lists.sf.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement).
+version 1.5.0beta01 [February 7, 2010]
+  Moved declaration of png_struct into private pngstruct.h and png_info
+    into pnginfo.h
+
+version 1.5.0beta02 [February 7, 2010]
+  Reverted to original png_push_save_buffer() code.
+
+version 1.5.0beta03 [February 8, 2010]
+  Return allocated "old_buffer" in png_push_save_buffer() before
+    calling png_error().
+  Updated configure script to use SO number 15.
+
+version 1.5.0beta04 [February 9, 2010]
+  Removed malformed "incomplete struct declaration" of png_info from png.h
+
+version 1.5.0beta05 [February 12, 2010]
+  Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
+    linewrapping that it entailed.
+  Revised comments in pngstruct.h and pnginfo.h and added pointers to
+    the libpng license.
+  Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
+  Removed the cbuilder5 project, which has not been updated to 1.4.0.
+
+version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010]
+  Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke
+    Nishikawa)
+
+version 1.5.0beta07 [omitted]
+
+version 1.5.0beta08 [February 19, 2010]
+  Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED
+    wherever png_snprintf() is used to construct error and warning messages.
+  Noted in scripts/makefile.mingw that it expects to be run under MSYS.
+  Removed obsolete unused MMX-querying support from contrib/gregbook
+  Added exported png_longjmp() function.
+  Removed the AIX redefinition of jmpbuf in png.h
+  Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt
+    when building on AIX.
+
+version 1.5.0beta09 [February 19, 2010]
+  Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt.
+  Changed the name of png_ptr->jmpbuf in pngstruct.h
+
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe) or to glennrp at users.sourceforge.net

 Glenn R-P
--- a/106
+++ b/106
@@ -2054,10 +2054,7 @@ version 1.4.0beta46 [December 10, 2008]
    PNG_TRANSFORM_STRIP_FILLER (Jim Barry).

 version 1.4.0beta47 [December 15, 2008]
-  Support for dithering was disabled by default, because it has never
-    been well tested and doesn't work very well.  The code has not
-    been removed, however, and can be enabled by building libpng with
-    PNG_READ_DITHER_SUPPORTED defined.
+  Turned off PNG_READ_DITHER_SUPPORTED by default.

 version 1.4.0beta48 [February 14, 2009]
  Added new exported function png_calloc().
@@ -2415,8 +2412,8 @@ version 1.4.0beta107 [December 4, 2009]
  Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
    to put png.h and pngconf.h in $prefix/include, like the other scripts,
    instead of in $prefix/include/libpng.  Also revised makefile.sco
-    to put them in $prefix/include/libpng14 instead of in
-    $prefix/include/libpng/libpng14.
+    to put them in $prefix/include/libpng15 instead of in
+    $prefix/include/libpng/libpng15.

 version 1.4.0beta108 [December 11, 2009]
  Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
@@ -2505,80 +2502,55 @@ version 1.4.1beta07 [February 6, 2010]
 version 1.4.1beta08 [February 6, 2010]
  Minor cleanup and updating of dates and copyright year.

-version 1.4.1beta09 [February 7, 2010]
+
+version 1.5.0beta01 [February 7, 2010]
+  Moved declaration of png_struct into private pngstruct.h and png_info
+    into pnginfo.h
+
+version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010]
  Reverted to original png_push_save_buffer() code.

-version 1.4.1beta10 [February 9, 2010]
-  Return allocated "old_buffer" in png_push_save_buffer() before calling
-    png_error(), to avoid a potential memory leak.
+version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010]
+  Return allocated "old_buffer" in png_push_save_buffer() before
+    calling png_error(), to avoid a potential memory leak.
+  Updated configure script to use SO number 15.

-version 1.4.1beta11 [February 12, 2010]
-  Relocated misplaced closing curley bracket in png_decompress_chunk().
-  Removed unused "buffer_size" variable from png_decompress_chunk().
+version 1.5.0beta04 [February 9, 2010]
+  Removed malformed "incomplete struct declaration" of png_info from png.h
+
+version 1.5.0beta05 [February 12, 2010]
+  Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
+    linewrapping that it entailed.
+  Revised comments in pngstruct.h and pnginfo.h and added pointers to
+    the libpng license.
+  Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
  Removed the cbuilder5 project, which has not been updated to 1.4.0.
-  Complete rewrite of two-pass png_decompress_chunk() by John Bowler.

-version 1.4.1beta12 [February 14, 2010]
-  Fixed type declaration of png_get_user_malloc_max() in pngget.c (Daisuke
+version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010]
+  Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke
    Nishikawa)

-version 1.4.1rc02 [January 18, 2010]
-  No changes.
+version 1.5.0beta07 [omitted]

-version 1.4.1rc03 [February 19, 2010]
+version 1.5.0beta08 [February 19, 2010]
+  Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED
+    wherever png_snprintf() is used to construct error and warning messages.
  Noted in scripts/makefile.mingw that it expects to be run under MSYS.
  Removed obsolete unused MMX-querying support from contrib/gregbook
+  Added exported png_longjmp() function.
  Removed the AIX redefinition of jmpbuf in png.h
-  Define _ALL_SOURCE in configure.ac, makefile.aix, and CMakeLists.txt
-    when using AIX compiler.
+  Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt
+    when building on AIX.

-version 1.4.1rc04 [February 19, 2010]
-  Removed unused gzio.c from contrib/pngminim gather and makefile scripts
+version 1.5.0beta09 [February 19, 2010]
+  Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt.
+  Changed the name of png_ptr->jmpbuf in pngstruct.h

-version 1.4.1 [February 25, 2010]
-
-version 1.4.2beta01 [April 1, 2010]
-  Conditionally compile an "else" statement in png_decompress_chunk().
-  Restored the macro definition of png_check_sig().
-
-version 1.4.2rc01 [April 10, 2010]
-  No changes.
-
-version 1.4.2rc02 [April 16, 2010]
-  Documented the fact that png_set_dither() was disabled since libpng-1.4.0.
-  Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect
-    more accurately what it actually does.  At the same time, renamed
-    the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
-    PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
-
-version 1.4.2rc03 [April 24, 2010]
-  Added some "(long)" typecasts to printf calls in png_handle_cHRM().
-  Relaxed the overly-restrictive permissions of some files.
-
-version 1.4.2rc04 [April 28, 2010]
-  Added the "vstudio" project to replace "visualc6" and "visualc71" which
-    will be removed from libpng-1.5.0.
-  Demonstrate in example.c that lang_key should be initialized.
-  Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in
-    contrib/pngminim/decoder/pngusr.h to make a smaller decoder application.
-
-version 1.4.2rc05 [April 29, 2010]
-  Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
-  Removed dummy_inflate.c and uncompr.c from contrib/pngminim/encoder
-  Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-    in gregbook/readpng2.c
-  Corrected protection of png_get_user_transform_ptr. The API declaration in
-    png.h is removed if both READ and WRITE USER_TRANSFORM are turned off
-    but was left defined in pngtrans.c
-
-version 1.4.2rc06 [May 3, 2010]
-  Moved declarations of umsg[] inside the proper #ifdef blocks in pngrutil.c
-
-version 1.4.2 [May 6, 2010]
-
-Send comments/corrections/commendations to glennrp at users.sourceforge.net
-or to png-mng-implement at lists.sf.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement).
+Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+(subscription required; visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement
+to subscribe)
+or to glennrp at users.sourceforge.net

 Glenn R-P
 */ }
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -21,8 +21,8 @@ enable_testing()
 # and license in png.h

 set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 4)
-set(PNGLIB_RELEASE 2)
+set(PNGLIB_MINOR 5)
+set(PNGLIB_RELEASE 0)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})

@@ -125,10 +125,6 @@ set(pngtest_sources

 add_definitions(-DPNG_CONFIGURE_LIBPNG)

-if(_AIX)
-  add_definitions(-D_ALL_SOURCE)
-endif(_AIX)
-
 if(MSVC)
  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
 endif(MSVC)
@@ -213,9 +209,9 @@ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
 # SET UP LINKS
 if(PNG_SHARED)
  set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#   VERSION 14.${PNGLIB_RELEASE}.1.4.2
-    VERSION 14.${PNGLIB_RELEASE}.0
-    SOVERSION 14
+#   VERSION 15.${PNGLIB_RELEASE}.1.5.0beta09
+    VERSION 15.${PNGLIB_RELEASE}.0
+    SOVERSION 15
    CLEAN_DIRECT_OUTPUT 1)
 endif()
 if(PNG_STATIC)
--- a/4
+++ b/4
@@ -1,5 +1,5 @@

-Installing libpng version 1.4.2 - May 6, 2010
+Installing libpng version 1.5.0beta09 - February 19, 2010

 On Unix/Linux and similar systems, you can simply type

@@ -46,7 +46,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.

 You can rename the directories that you downloaded (they
-might be called "libpng-1.4.2" or "libpng14" and "zlib-1.2.3"
+might be called "libpng-1.5.0beta09" or "libpng15" and "zlib-1.2.3"
 or "zlib123") so that you have directories called "zlib" and "libpng".

 Your directory structure should look like this:
--- a/4
+++ b/4
@@ -10,7 +10,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.2, May 6, 2010, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
 Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -108,4 +108,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-May 6, 2010
+February 19, 2010
--- a/Makefile.am
+++ b/Makefile.am
@@ -29,7 +29,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil
 	pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h pngpriv.h
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@

@@ -73,7 +73,7 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.4.2.txt
+	example.c libpng-1.5.0beta09.txt

 CLEANFILES= pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
 libpng.sym
--- a/Makefile.in
+++ b/Makefile.in
@@ -303,7 +303,7 @@ libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngset.c pngget.c pngrutil
 	pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c \
-	png.h pngconf.h pngpriv.h
+	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_CPPFLAGS = @LIBPNG_DEFINES@
 libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined \
@@ -333,7 +333,7 @@ EXTRA_DIST = \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.4.2.txt
+	example.c libpng-1.5.0beta09.txt

 CLEANFILES = pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers \
 libpng.sym
--- a/16
+++ b/16
@@ -1,4 +1,4 @@
-README for libpng version 1.4.2 - May 6, 2010 (shared library 14.0)
+README for libpng version 1.5.0beta09 - February 19, 2010 (shared library 15.0)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.
@@ -185,9 +185,9 @@ Files in this distribution:
       makefile.std     =>  Generic UNIX makefile (cc, creates static
                            libpng.a)
       makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng14.so.14.1.4.2)
+                            gcc, creates libpng15.so.15.1.5.0beta09)
       makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng14.so.14.1.4.2)
+                            (gcc, creates libpng15.so.15.1.5.0beta09)
       makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
       makefile.knr     =>  Archaic UNIX Makefile that converts files with
                            ansi2knr (Requires ansi2knr.c from
@@ -204,17 +204,17 @@ Files in this distribution:
       makefile.intel   =>  Intel C/C++ version 4.0 and later
       makefile.mingw   =>  Mingw/gcc makefile
       makefile.netbsd  =>  NetBSD/cc makefile, makes libpng.so.
-       makefile.ne14bsd  =>  NetBSD/cc makefile, makes
-                            libpng14.so
+       makefile.ne15bsd  =>  NetBSD/cc makefile, makes
+                            libpng15.so
       makefile.openbsd =>  OpenBSD makefile
       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
       makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng14.so.14.1.4.2)
+                            (gcc, creates libpng15.so.15.1.5.0beta09)
       makefile.sunos   =>  Sun makefile
       makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng14.so.14.1.4.2)
+                            (gcc, creates libpng15.so.15.1.5.0beta09)
       makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng14.so.14.1.4.2)
+                            (gcc, creates libpng15.so.15.1.5.0beta09)
       makefile.32sunu  =>  Sun Ultra 32-bit makefile
       makefile.64sunu  =>  Sun Ultra 64-bit makefile
       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
--- a/2
+++ b/2
@@ -9,7 +9,7 @@ Fix problem with C++ and EXTERN "C".
 cHRM transformation.
 Improve setjmp/longjmp usage or remove it in favor of returning error codes.
 Add "grayscale->palette" transformation and "palette->grayscale" detection.
-Improved quantizing and dithering.
+Improved dithering.
 Multi-lingual error and warning message support.
 Complete sRGB transformation (presently it simply uses gamma=0.45455).
 Man pages for function calls.
--- a/33
+++ b/33
@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.65 for libpng 1.4.2.
+# Generated by GNU Autoconf 2.65 for libpng 1.5.0beta09.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -701,8 +701,8 @@ MAKEFLAGS=
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.4.2'
-PACKAGE_STRING='libpng 1.4.2'
+PACKAGE_VERSION='1.5.0beta09'
+PACKAGE_STRING='libpng 1.5.0beta09'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 PACKAGE_URL=''

@@ -1432,7 +1432,7 @@ if test "$ac_init_help" = "long"; then
  # Omit some internal or obsolete options to make the list less imposing.
  # This message is too long to be a string in the A/UX 3.1 sh.
  cat <<_ACEOF
-\`configure' configures libpng 1.4.2 to adapt to many kinds of systems.
+\`configure' configures libpng 1.5.0beta09 to adapt to many kinds of systems.

 Usage: $0 [OPTION]... [VAR=VALUE]...

@@ -1502,7 +1502,7 @@ fi

 if test -n "$ac_init_help"; then
  case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.4.2:";;
+     short | recursive ) echo "Configuration of libpng 1.5.0beta09:";;
   esac
  cat <<\_ACEOF

@@ -1607,7 +1607,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
  cat <<\_ACEOF
-libpng configure 1.4.2
+libpng configure 1.5.0beta09
 generated by GNU Autoconf 2.65

 Copyright (C) 2009 Free Software Foundation, Inc.
@@ -2032,7 +2032,7 @@ cat >config.log <<_ACEOF
 This file contains any messages produced by compilers while
 running configure, to aid debugging if configure makes a mistake.

-It was created by libpng $as_me 1.4.2, which was
+It was created by libpng $as_me 1.5.0beta09, which was
 generated by GNU Autoconf 2.65.  Invocation command line was

  $ $0 $@
@@ -2840,7 +2840,7 @@ fi

 # Define the identity of the package.
 PACKAGE='libpng'
- VERSION='1.4.2'
+ VERSION='1.5.0beta09'


 cat >>confdefs.h <<_ACEOF
@@ -2904,10 +2904,10 @@ fi



-PNGLIB_VERSION=1.4.2
+PNGLIB_VERSION=1.5.0beta09
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=4
-PNGLIB_RELEASE=2
+PNGLIB_MINOR=5
+PNGLIB_RELEASE=0



@@ -11415,12 +11415,7 @@ else
 fi


-case $host_os in
-  aix*)
-   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;;
-  *)
-   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
-esac
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
 LIBPNG_DEFINES=$LIBPNG_DEFINES


@@ -12032,7 +12027,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
 # report actual input values of CONFIG_FILES etc. instead of their
 # values after options handling.
 ac_log="
-This file was extended by libpng $as_me 1.4.2, which was
+This file was extended by libpng $as_me 1.5.0beta09, which was
 generated by GNU Autoconf 2.65.  Invocation command line was

  CONFIG_FILES    = $CONFIG_FILES
@@ -12098,7 +12093,7 @@ _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
 ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
 ac_cs_version="\\
-libpng config.status 1.4.2
+libpng config.status 1.5.0beta09
 configured by $0, generated by GNU Autoconf 2.65,
  with options \\"\$ac_cs_config\\"

--- a/configure.ac
+++ b/configure.ac
@@ -18,15 +18,15 @@ AC_PREREQ(2.59)

 dnl Version number stuff here:

-AC_INIT([libpng], [1.4.2], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.5.0beta09], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE

-PNGLIB_VERSION=1.4.2
+PNGLIB_VERSION=1.5.0beta09
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=4
-PNGLIB_RELEASE=2
+PNGLIB_MINOR=5
+PNGLIB_RELEASE=0

 dnl End of version number stuff

@@ -59,12 +59,7 @@ AC_CHECK_FUNCS([memset], , AC_ERROR([memset not found in libc]))
 AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_ERROR([cannot find pow])) )
 AC_CHECK_LIB(z, zlibVersion, , AC_ERROR([zlib not installed]))

-case $host_os in
-  aix*)
-   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG -D_ALL_SOURCE;;
-  *)
-   LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG;;
-esac
+LIBPNG_DEFINES=-DPNG_CONFIGURE_LIBPNG
 LIBPNG_DEFINES=$LIBPNG_DEFINES
 AC_SUBST(LIBPNG_DEFINES)

--- a/contrib/gregbook/Makefile.sgi
+++ b/contrib/gregbook/Makefile.sgi
@@ -23,9 +23,9 @@

 # macros --------------------------------------------------------------------

-PNGINC = -I/usr/local/include/libpng14
-PNGLIB = -L/usr/local/lib -lpng14	  # dynamically linked against libpng
-#PNGLIB = /usr/local/lib/libpng14.a # statically linked against libpng
+PNGINC = -I/usr/local/include/libpng15
+PNGLIB = -L/usr/local/lib -lpng15	  # dynamically linked against libpng
+#PNGLIB = /usr/local/lib/libpng15.a # statically linked against libpng
 # or:
 #PNGINC = -I../..
 #PNGLIB = -L../.. -lpng
--- a/contrib/gregbook/Makefile.unx
+++ b/contrib/gregbook/Makefile.unx
@@ -26,14 +26,14 @@
 # macros --------------------------------------------------------------------

 #PNGDIR = /usr/local/lib
-#PNGINC = -I/usr/local/include/libpng14
-#PNGLIBd = -L$(PNGDIR) -lpng14 # dynamically linked, installed libpng
-#PNGLIBs = $(PNGDIR)/libpng14.a # statically linked, installed libpng
+#PNGINC = -I/usr/local/include/libpng15
+#PNGLIBd = -L$(PNGDIR) -lpng15 # dynamically linked, installed libpng
+#PNGLIBs = $(PNGDIR)/libpng15.a # statically linked, installed libpng
 # or:
 PNGDIR = ../..#	this one is for libpng-x.y.z/contrib/gregbook builds
 #PNGDIR = ../libpng
 PNGINC = -I$(PNGDIR)
-PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng14	# dynamically linked
+PNGLIBd = -Wl,-rpath,$(PNGDIR) -L$(PNGDIR) -lpng15	# dynamically linked
 PNGLIBs = $(PNGDIR)/libpng.a		# statically linked, local libpng

 ZDIR = /usr/local/lib
--- a/contrib/gregbook/readpng2.c
+++ b/contrib/gregbook/readpng2.c
@@ -129,7 +129,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
    }


-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
    /* prepare the reader to ignore all recognized chunks whose data won't be
     * used, i.e., all chunks recognized by libpng except for IHDR, PLTE, IDAT,
     * IEND, tRNS, bKGD, gAMA, and sRGB (small performance improvement) */
@@ -158,7 +158,7 @@ int readpng2_init(mainprog_info *mainprog_ptr)
        png_set_keep_unknown_chunks(png_ptr, 1 /* PNG_HANDLE_CHUNK_NEVER */,
          chunks_to_ignore, sizeof(chunks_to_ignore)/5);
    }
-#endif /* PNG_HANDLE_AS_UNKNOWN_SUPPORTED */
+#endif /* PNG_UNKNOWN_CHUNKS_SUPPORTED */


    /* instead of doing png_init_io() here, now we set up our callback
@@ -480,5 +480,5 @@ static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg)
        exit(99);
    }

-    longjmp(mainprog_ptr->jmpbuf, 1);
+    png_longjmp(mainprog_ptr, 1);
 }
--- a/contrib/gregbook/writepng.c
+++ b/contrib/gregbook/writepng.c
@@ -388,5 +388,5 @@ static void writepng_error_handler(png_structp png_ptr, png_const_charp msg)
        exit(99);
    }

-    longjmp(mainprog_ptr->jmpbuf, 1);
+    png_longjmp(mainprog_ptr, 1);
 }
--- a/contrib/pngminim/decoder/gather.sh
+++ b/contrib/pngminim/decoder/gather.sh
@@ -5,4 +5,4 @@ rm example.c pngtest.c pngpread.c pngw*.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
-rm minigzip.c example.c compress.c deflate.c gz*
+rm minigzip.c example.c compress.c deflate.c 
--- a/contrib/pngminim/decoder/makefile
+++ b/contrib/pngminim/decoder/makefile
@@ -15,7 +15,7 @@ O=.o
 L=.a
 E=

-ZOBJS  = adler32$(O) crc32$(O) \
+ZOBJS  = adler32$(O) crc32$(O) gzio$(O) \
 	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
 	 trees$(O) uncompr$(O) zutil$(O)

@@ -25,7 +25,7 @@ OBJS  = pngm2pnm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/decoder/pngusr.h
+++ b/contrib/pngminim/decoder/pngusr.h
@@ -23,10 +23,9 @@
 #define png_error(s1,s2) png_err(s1)
 #define png_chunk_error(s1,s2) png_err(s1)

-#define PNG_NO_READ_BGR
 #define PNG_NO_READ_GAMMA
 #define PNG_NO_READ_BACKGROUND
-#define PNG_NO_READ_QUANTIZE
+#define PNG_NO_READ_DITHER
 #define PNG_NO_READ_INVERT
 #define PNG_NO_READ_SHIFT
 #define PNG_NO_READ_PACK
@@ -60,7 +59,6 @@
 #define PNG_NO_WRITE_SUPPORTED

 #define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
 #define PNG_NO_USER_MEM
 #define PNG_NO_FIXED_POINT_SUPPORTED
 #define PNG_NO_MNG_FEATURES
@@ -73,7 +71,5 @@
 #define PNG_NO_PROGRESSIVE_READ
 #define PNG_NO_USER_LIMITS
 #define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1123

 #endif /* MINRDPNGCONF_H */
-
--- a/contrib/pngminim/encoder/dummy_inflate.c
+++ b/contrib/pngminim/encoder/dummy_inflate.c
@@ -0,0 +1,27 @@
+#include "zlib.h"
+
+int ZEXPORT inflate(strm, flush)
+z_streamp strm;
+int flush;
+{ return Z_OK ; }
+
+int ZEXPORT inflateReset(strm)
+z_streamp strm;
+{ return Z_OK ; }
+
+int ZEXPORT inflateEnd(strm)
+z_streamp strm;
+{ return Z_STREAM_ERROR ; }
+
+int ZEXPORT inflateInit_(strm, version, stream_size)
+z_streamp strm;
+const char *version;
+int stream_size;
+{ return Z_OK ; }
+
+int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
+z_streamp strm;
+int windowBits;
+const char *version;
+int stream_size;
+{ return Z_STREAM_ERROR ; }
--- a/contrib/pngminim/encoder/gather.sh
+++ b/contrib/pngminim/encoder/gather.sh
@@ -6,4 +6,4 @@ rm example.c pngtest.c pngr*.c pngpread.c
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
 rm inf*.[ch]
-rm uncompr.c minigzip.c example.c gz*
+rm minigzip.c example.c
--- a/contrib/pngminim/encoder/makefile
+++ b/contrib/pngminim/encoder/makefile
@@ -14,8 +14,9 @@ O=.o
 L=.a
 E=

-ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) \
-	 trees$(O) zutil$(O)
+ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) gzio$(O) \
+	 dummy_inflate$(O) \
+	 trees$(O) uncompr$(O) zutil$(O)

 OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
 	pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
@@ -23,7 +24,7 @@ OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h pngpriv.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/encoder/pngusr.h
+++ b/contrib/pngminim/encoder/pngusr.h
@@ -22,9 +22,8 @@
 #define png_chunk_error(s1,s2) png_err(s1)

 #define PNG_NO_WRITE_BACKGROUND
-#define PNG_NO_WRITE_BGR
 #define PNG_NO_WRITE_GAMMA
-#define PNG_NO_WRITE_QUANTIZE
+#define PNG_NO_WRITE_DITHER
 #define PNG_NO_WRITE_INVERT
 #define PNG_NO_WRITE_SHIFT
 #define PNG_NO_WRITE_PACK
@@ -59,7 +58,6 @@
 #define PNG_NO_WRITE_FLUSH

 #define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
 #define PNG_NO_USER_MEM
 #define PNG_NO_FIXED_POINT_SUPPORTED
 #define PNG_NO_MNG_FEATURES
@@ -71,6 +69,5 @@
 #define PNG_NO_EASY_ACCESS
 #define PNG_NO_USER_LIMITS
 #define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1143

 #endif /* MINWRPNGCONF_H */
--- a/contrib/pngminim/preader/gather.sh
+++ b/contrib/pngminim/preader/gather.sh
@@ -6,4 +6,4 @@ rm example.c pngtest.c pngw*.c
 # change the following 2 lines if zlib is somewhere else
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .
-rm minigzip.c example.c compress.c deflate.c gz*
+rm minigzip.c example.c compress.c deflate.c 
--- a/contrib/pngminim/preader/makefile
+++ b/contrib/pngminim/preader/makefile
@@ -31,7 +31,7 @@ O=.o
 L=.a
 E=

-ZOBJS  = adler32$(O) crc32$(O) \
+ZOBJS  = adler32$(O) crc32$(O) gzio$(O) \
 	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
 	 trees$(O) uncompr$(O) zutil$(O)

@@ -41,7 +41,7 @@ OBJS  = rpng2-x$(O) readpng2$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \

 # implicit make rules -------------------------------------------------------

-.c$(O): png.h pngconf.h pngpriv.h readpng2.h pngusr.h zlib.h
+.c$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h readpng2.h pngusr.h zlib.h
 	$(CC) -c $(CFLAGS) $<

 # dependencies
--- a/contrib/pngminim/preader/pngusr.h
+++ b/contrib/pngminim/preader/pngusr.h
@@ -19,7 +19,6 @@
 #define png_error(s1,s2) png_err(s1)
 #define png_chunk_error(s1,s2) png_err(s1)

-#define PNG_NO_READ_BGR
 #define PNG_NO_READ_DITHER
 #define PNG_NO_READ_INVERT
 #define PNG_NO_READ_SHIFT
@@ -51,7 +50,6 @@
 #define PNG_NO_WRITE_SUPPORTED

 #define PNG_NO_INFO_IMAGE
-#define PNG_NO_IO_STATE
 #define PNG_NO_USER_MEM
 #define PNG_NO_FIXED_POINT_SUPPORTED
 #define PNG_NO_MNG_FEATURES
@@ -63,6 +61,5 @@
 #define PNG_NO_EASY_ACCESS
 #define PNG_NO_USER_LIMITS
 #define PNG_NO_SET_USER_LIMITS
-#define PNG_NO_TIME_RFC1143

 #endif /* MINPRDPNGCONF_H */
--- a/example.c
+++ b/example.c
@@ -2,7 +2,7 @@
 #if 0 /* in case someone actually tries to compile this */

 /* example.c - an example of using libpng
- * Last changed in libpng 1.4.2 [May 6, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * This file has been placed in the public domain by the authors.
 * Maintained 1998-2010 Glenn Randers-Pehrson
 * Maintained 1996, 1997 Andreas Dilger)
@@ -31,7 +31,7 @@
  */

 #ifndef png_jmpbuf
-#  define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
+#  define png_jmpbuf(png_ptr) ((png_ptr)->png_jmpbuf)
 #endif

 /* Check to see if a file is a PNG file using png_sig_cmp().  png_sig_cmp()
@@ -160,7 +160,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    * If you have enough memory to read in the entire image at once,
    * and you need to specify only transforms that can be controlled
    * with one of the PNG_TRANSFORM_* bits (this presently excludes
-    * quantizing, filling, setting background, and doing gamma
+    * dithering, filling, setting background, and doing gamma
    * adjustment), then you can read the entire image (including
    * pixels) into the info structure with this call:
    */
@@ -271,8 +271,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
         png_set_gamma(png_ptr, screen_gamma, 0.45455);
   }

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-   /* Quantize RGB files down to 8 bit palette or reduce palettes
+   /* Dither RGB files down to 8 bit palette or reduce palettes
    * to the number of colors available on your screen.
    */
   if (color_type & PNG_COLOR_MASK_COLOR)
@@ -283,11 +282,10 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
      /* This reduces the image to the application supplied palette */
      if (/* We have our own palette */)
      {
-         /* An array of colors to which the image should be quantized */
+         /* An array of colors to which the image should be dithered */
         png_color std_color_cube[MAX_SCREEN_COLORS];

-         /* Prior to libpng-1.4.2, this was png_set_dither(). */
-         png_set_quantize(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
+         png_set_dither(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
            MAX_SCREEN_COLORS, NULL, 0);
      }
      /* This reduces the image to the palette supplied in the file */
@@ -297,11 +295,10 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */

         png_get_hIST(png_ptr, info_ptr, &histogram);

-         png_set_quantize(png_ptr, palette, num_palette,
+         png_set_dither(png_ptr, palette, num_palette,
                        max_screen_colors, histogram, 0);
      }
   }
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */

   /* Invert monochrome files to have 0 as white and 1 as black */
   png_set_invert_mono(png_ptr);
@@ -687,11 +684,8 @@ void write_png(char *file_name /* , ... other image information ... */)
   text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
 #ifdef PNG_iTXt_SUPPORTED
   text_ptr[0].lang = NULL;
-   text_ptr[0].lang_key = NULL;
   text_ptr[1].lang = NULL;
-   text_ptr[1].lang_key = NULL;
   text_ptr[2].lang = NULL;
-   text_ptr[2].lang_key = NULL;
 #endif
   png_set_text(png_ptr, info_ptr, text_ptr, 3);

--- a/libpng-1.5.0beta09.txt
+++ b/libpng-1.5.0beta09.txt
@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.2 - May 6, 2010
+ libpng version 1.5.0beta09 - February 19, 2010
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -11,7 +11,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.2 - May 6, 2010
+ libpng versions 0.97, January 1998, through 1.5.0beta09 - February 19, 2010
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -241,13 +241,9 @@ free any memory.
    }

 If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
 errors will result in a call to PNG_ABORT() which defaults to abort().

-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
 Now you need to set up the input code.  The default for libpng is to
 use the C function fread().  If you use this, you will need to pass a
 valid FILE * in the function png_init_io().  Be sure that the file is
@@ -479,7 +475,7 @@ you want to do are limited to the following set:
                                to RGB (or GA to RGBA)

 (This excludes setting a background color, doing gamma transformation,
-quantizing, and setting filler.)  If this is the case, simply do this:
+dithering, and setting filler.)  If this is the case, simply do this:

    png_read_png(png_ptr, info_ptr, png_transforms, NULL)

@@ -903,7 +899,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.2, not all possible expansions are supported.
+As of libpng version 1.5.0beta09, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -1163,40 +1159,6 @@ recommended that PNG viewers support gamma correction.
   else
      png_set_gamma(png_ptr, screen_gamma, 0.45455);

-If you need to reduce an RGB file to a paletted file, or if a paletted
-file has more entries then will fit on your screen, png_set_quantize()
-will do that.  Note that this is a simple match dither that merely
-finds the closest color available.  This should work fairly well with
-optimized palettes, and fairly badly with linear color cubes.  If you
-pass a palette that is larger then maximum_colors, the file will
-reduce the number of colors in the palette so it will fit into
-maximum_colors.  If there is a histogram, it will use it to make
-more intelligent choices when reducing the palette.  If there is no
-histogram, it may not do as good a job.
-
-   if (color_type & PNG_COLOR_MASK_COLOR)
-   {
-      if (png_get_valid(png_ptr, info_ptr,
-         PNG_INFO_PLTE))
-      {
-         png_uint_16p histogram = NULL;
-
-         png_get_hIST(png_ptr, info_ptr,
-            &histogram);
-         png_set_quantize(png_ptr, palette, num_palette,
-            max_screen_colors, histogram, 1);
-      }
-      else
-      {
-         png_color std_color_cube[MAX_SCREEN_COLORS] =
-            { ... colors ... };
-
-         png_set_quantize(png_ptr, std_color_cube,
-            MAX_SCREEN_COLORS, MAX_SCREEN_COLORS,
-            NULL,0);
-      }
-   }
-
 PNG files describe monochrome as black being zero and white being one.
 The following code will reverse this (make black be one and white be
 zero):
@@ -1726,13 +1688,9 @@ section below for more information on the libpng error handling.
    return;

 If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
 errors will result in a call to PNG_ABORT() which defaults to abort().

-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
 Now you need to set up the output code.  The default for libpng is to
 use the C function fwrite().  If you use this, you will need to pass a
 valid FILE * in the function png_init_io().  Be sure that the file is
@@ -2593,9 +2551,8 @@ Error handling in libpng is done through png_error() and png_warning().
 Errors handled through png_error() are fatal, meaning that png_error()
 should never return to its caller.  Currently, this is handled via
 setjmp() and longjmp() (unless you have compiled libpng with
-PNG_NO_SETJMP, in which case it is handled via PNG_ABORT()),
-but you could change this to do things like exit() if you should wish,
-as long as your function does not return.
+PNG_SETJMP_NOT_SUPPORTED, in which case it is handled via PNG_ABORT()),
+but you could change this to do things like exit() if you should wish.

 On non-fatal errors, png_warning() is called
 to print a warning message, and then control returns to the calling code.
@@ -3148,15 +3105,6 @@ The png_zalloc() and png_zfree() functions are no longer exported.
 The png_zalloc() function no longer zeroes out the memory that it
 allocates.

-Support for dithering was disabled by default in libpng-1.4.0, because
-been well tested and doesn't actually "dither".  The code was not
-removed, however, and could be enabled by building libpng with
-PNG_READ_DITHER_SUPPORTED defined.  In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
-reflect more accurately what it actually does.  At the same time,
-the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
-PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
-
 We removed the trailing '.' from the warning and error messages.

 X. Detecting libpng
@@ -3226,12 +3174,12 @@ the statement that follows the comment:
    /* Single-line comment */
    statement;

-    /* This is a multiple-line
-     * comment.
+    /* Multiple-line
+     * comment
     */
    statement;

-Very short comments can be placed after the end of the statement
+Very short comments can be placed at the end of the statement
 to which they pertain:

    statement;    /* comment */
@@ -3278,9 +3226,9 @@ macros begin with "PNG_".

 We put a space after each comma and after each semicolon
 in "for" statments, and we put spaces before and after each
-C binary operator and after "for" or "while", and before
-"?".  We don't put a space between a typecast and the expression
-being cast, nor do we put one between a function name and the
+C binary operator and after "for" or "while".  We don't
+put a space between a typecast and the expression being
+cast, nor do we put one between a function name and the
 left parenthesis that follows it:

    for (i = 2; i > 0; --i)
@@ -3297,13 +3245,13 @@ Other rules can be inferred by inspecting the libpng source.

 XIII. Y2K Compliance in libpng

-May 6, 2010
+February 19, 2010

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.2 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "May 6, 2010"
+.TH LIBPNG 3 "February 19, 2010"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta09
 .SH SYNOPSIS
 \fI\fB

@@ -338,6 +338,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2

 \fI\fB

+\fBvoid png_longjmp (png_structp \fP\fIpng_ptr\fP\fB, int \fIval\fP\fB);\fP
+
+\fI\fB
+
 \fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP

 \fI\fB
@@ -454,6 +458,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2

 \fI\fB

+\fBvoid png_set_dither (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_dither\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_error_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarning_fn\fP\fB);\fP

 \fI\fB
@@ -578,10 +586,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2

 \fI\fB

-\fBvoid png_set_quantize (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_quantize\fP\fB);\fP
-
-\fI\fB
-
 \fBvoid png_set_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fIread_data_fn\fP\fB);\fP

 \fI\fB
@@ -785,7 +789,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.4.2 - May 6, 2010
+ libpng version 1.5.0beta09 - February 19, 2010
 Updated and distributed by Glenn Randers-Pehrson
 <glennrp at users.sourceforge.net>
 Copyright (c) 1998-2009 Glenn Randers-Pehrson
@@ -796,7 +800,7 @@ libpng.txt - A description on how to use and modify libpng

 Based on:

- libpng versions 0.97, January 1998, through 1.4.2 - May 6, 2010
+ libpng versions 0.97, January 1998, through 1.5.0beta09 - February 19, 2010
 Updated and distributed by Glenn Randers-Pehrson
 Copyright (c) 1998-2009 Glenn Randers-Pehrson

@@ -1026,13 +1030,9 @@ free any memory.
    }

 If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
 errors will result in a call to PNG_ABORT() which defaults to abort().

-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
 Now you need to set up the input code.  The default for libpng is to
 use the C function fread().  If you use this, you will need to pass a
 valid FILE * in the function png_init_io().  Be sure that the file is
@@ -1264,7 +1264,7 @@ you want to do are limited to the following set:
                                to RGB (or GA to RGBA)

 (This excludes setting a background color, doing gamma transformation,
-quantizing, and setting filler.)  If this is the case, simply do this:
+dithering, and setting filler.)  If this is the case, simply do this:

    png_read_png(png_ptr, info_ptr, png_transforms, NULL)

@@ -1688,7 +1688,7 @@ things.
 As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
 added.  It expands the sample depth without changing tRNS to alpha.

-As of libpng version 1.4.2, not all possible expansions are supported.
+As of libpng version 1.5.0beta09, not all possible expansions are supported.

 In the following table, the 01 means grayscale with depth<8, 31 means
 indexed with depth<8, other numerals represent the color type, "T" means
@@ -1948,40 +1948,6 @@ recommended that PNG viewers support gamma correction.
   else
      png_set_gamma(png_ptr, screen_gamma, 0.45455);

-If you need to reduce an RGB file to a paletted file, or if a paletted
-file has more entries then will fit on your screen, png_set_quantize()
-will do that.  Note that this is a simple match dither that merely
-finds the closest color available.  This should work fairly well with
-optimized palettes, and fairly badly with linear color cubes.  If you
-pass a palette that is larger then maximum_colors, the file will
-reduce the number of colors in the palette so it will fit into
-maximum_colors.  If there is a histogram, it will use it to make
-more intelligent choices when reducing the palette.  If there is no
-histogram, it may not do as good a job.
-
-   if (color_type & PNG_COLOR_MASK_COLOR)
-   {
-      if (png_get_valid(png_ptr, info_ptr,
-         PNG_INFO_PLTE))
-      {
-         png_uint_16p histogram = NULL;
-
-         png_get_hIST(png_ptr, info_ptr,
-            &histogram);
-         png_set_quantize(png_ptr, palette, num_palette,
-            max_screen_colors, histogram, 1);
-      }
-      else
-      {
-         png_color std_color_cube[MAX_SCREEN_COLORS] =
-            { ... colors ... };
-
-         png_set_quantize(png_ptr, std_color_cube,
-            MAX_SCREEN_COLORS, MAX_SCREEN_COLORS,
-            NULL,0);
-      }
-   }
-
 PNG files describe monochrome as black being zero and white being one.
 The following code will reverse this (make black be one and white be
 zero):
@@ -2511,13 +2477,9 @@ section below for more information on the libpng error handling.
    return;

 If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
+you can compile libpng with PNG_SETJMP_NOT_SUPPORTED, in which case
 errors will result in a call to PNG_ABORT() which defaults to abort().

-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
 Now you need to set up the output code.  The default for libpng is to
 use the C function fwrite().  If you use this, you will need to pass a
 valid FILE * in the function png_init_io().  Be sure that the file is
@@ -3378,9 +3340,8 @@ Error handling in libpng is done through png_error() and png_warning().
 Errors handled through png_error() are fatal, meaning that png_error()
 should never return to its caller.  Currently, this is handled via
 setjmp() and longjmp() (unless you have compiled libpng with
-PNG_NO_SETJMP, in which case it is handled via PNG_ABORT()),
-but you could change this to do things like exit() if you should wish,
-as long as your function does not return.
+PNG_SETJMP_NOT_SUPPORTED, in which case it is handled via PNG_ABORT()),
+but you could change this to do things like exit() if you should wish.

 On non-fatal errors, png_warning() is called
 to print a warning message, and then control returns to the calling code.
@@ -3933,15 +3894,6 @@ The png_zalloc() and png_zfree() functions are no longer exported.
 The png_zalloc() function no longer zeroes out the memory that it
 allocates.

-Support for dithering was disabled by default in libpng-1.4.0, because
-been well tested and doesn't actually "dither".  The code was not
-removed, however, and could be enabled by building libpng with
-PNG_READ_DITHER_SUPPORTED defined.  In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
-reflect more accurately what it actually does.  At the same time,
-the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
-PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
-
 We removed the trailing '.' from the warning and error messages.

 .SH X. Detecting libpng
@@ -4011,12 +3963,12 @@ the statement that follows the comment:
    /* Single-line comment */
    statement;

-    /* This is a multiple-line
-     * comment.
+    /* Multiple-line
+     * comment
     */
    statement;

-Very short comments can be placed after the end of the statement
+Very short comments can be placed at the end of the statement
 to which they pertain:

    statement;    /* comment */
@@ -4063,9 +4015,9 @@ macros begin with "PNG_".

 We put a space after each comma and after each semicolon
 in "for" statments, and we put spaces before and after each
-C binary operator and after "for" or "while", and before
-"?".  We don't put a space between a typecast and the expression
-being cast, nor do we put one between a function name and the
+C binary operator and after "for" or "while".  We don't
+put a space between a typecast and the expression being
+cast, nor do we put one between a function name and the
 left parenthesis that follows it:

    for (i = 2; i > 0; --i)
@@ -4082,13 +4034,13 @@ Other rules can be inferred by inspecting the libpng source.

 .SH XIII. Y2K Compliance in libpng

-May 6, 2010
+February 19, 2010

 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.4.2 are Y2K compliant.  It is my belief that earlier
+upward through 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
@@ -4264,11 +4216,7 @@ the first widely used release:
 1.4.1beta01-03      14    10401  14.so.14.1[.0]
 1.4.1rc01           14    10401  14.so.14.1[.0]
 1.4.1beta04-12      14    10401  14.so.14.1[.0]
- 1.4.1rc02-04        14    10401  14.so.14.1[.0]
- 1.4.1               14    10401  14.so.14.1[.0]
- 1.4.2beta01         14    10402  14.so.14.2[.0]
- 1.4.2rc02-06        14    10402  14.so.14.2[.0]
- 1.4.2               14    10402  14.so.14.2[.0]
+ 1.5.0beta01-09      15    10500  15.so.15.1[.0]

 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4324,7 +4272,7 @@ possible without all of you.

 Thanks to Frank J. T. Wojcik for helping with the documentation.

-Libpng version 1.4.2 - May 6, 2010:
+Libpng version 1.5.0beta09 - February 19, 2010:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).

@@ -4347,7 +4295,7 @@ this sentence.

 This code is released under the libpng license.

-libpng versions 1.2.6, August 15, 2004, through 1.4.2, May 6, 2010, are
+libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
 Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4446,7 +4394,7 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-May 6, 2010
+February 19, 2010

 .\" end of man page

--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "May 6, 2010"
+.TH LIBPNGPF 3 "February 19, 2010"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2
+libpng \- Portable Network Graphics (PNG) Reference Library 1.5.0beta09
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -145,6 +145,14 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2

 \fI\fB

+\fI\fB
+
+\fBvoid png_do_dither (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIdither_lookup\fP\fB);\fP
+
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_expand (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fItrans_value\fP\fB);\fP

 \fI\fB
@@ -187,12 +195,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.4.2

 \fI\fB

-\fBvoid png_do_quantize (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIpalette_lookup\fP\fB, png_bytep \fIquantize_lookup\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_do_read_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, png_uint_32 \fIflags\fP\fB);\fP

 \fI\fB
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "May 6, 2010"
+.TH PNG 5 "February 19, 2010"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@

 /* png.c - location for general purpose libpng functions
 *
- * Last changed in libpng 1.4.2 [May 6, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,13 +11,14 @@
 * and license in png.h
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_EXTERN
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #include "pngpriv.h"

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_2 Your_png_h_is_not_version_1_4_2;
+typedef version_1_5_0beta09 Your_png_h_is_not_version_1_5_0beta09;

 /* Version information for C files.  This had better match the version
 * string defined in png.h.
@@ -551,13 +552,13 @@ png_get_copyright(png_structp png_ptr)
 #else
 #ifdef __STDC__
   return ((png_charp) PNG_STRING_NEWLINE \
-     "libpng version 1.4.2 - May 6, 2010" PNG_STRING_NEWLINE \
+     "libpng version 1.5.0beta09 - February 19, 2010" PNG_STRING_NEWLINE \
     "Copyright (c) 1998-2010 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
     "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
     "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
     PNG_STRING_NEWLINE);
 #else
-      return ((png_charp) "libpng version 1.4.2 - May 6, 2010\
+      return ((png_charp) "libpng version 1.5.0beta09 - February 19, 2010\
      Copyright (c) 1998-2010 Glenn Randers-Pehrson\
      Copyright (c) 1996-1997 Andreas Dilger\
      Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.");
@@ -622,9 +623,7 @@ png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
   return 0;
 }
 #endif
-#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */

-#ifdef PNG_READ_SUPPORTED
 /* This function, added to libpng-1.0.6g, is untested. */
 int PNGAPI
 png_reset_zstream(png_structp png_ptr)
@@ -633,7 +632,7 @@ png_reset_zstream(png_structp png_ptr)
      return Z_STREAM_ERROR;
   return (inflateReset(&png_ptr->zstream));
 }
-#endif /* PNG_READ_SUPPORTED */
+#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */

 /* This function was added to libpng-1.0.7 */
 png_uint_32 PNGAPI
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@

 /* png.h - header file for PNG reference library
 *
- * libpng version 1.4.2 - May 6, 2010
+ * libpng version 1.5.0beta09 - February 19, 2010
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,7 +11,7 @@
 * Authors and maintainers:
 *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
 *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.4.2 - May 6, 2010: Glenn
+ *  libpng versions 0.97, January 1998, through 1.5.0beta09 - February 19, 2010: Glenn
 *  See also "Contributing Authors", below.
 *
 * Note about libpng version numbers:
@@ -137,11 +137,7 @@
 *    1.4.1beta01-03          14    10401  14.so.14.1[.0]
 *    1.4.1rc01               14    10401  14.so.14.1[.0]
 *    1.4.1beta04-12          14    10401  14.so.14.1[.0]
- *    1.4.1rc02-04            14    10401  14.so.14.1[.0]
- *    1.4.1                   14    10401  14.so.14.1[.0]
- *    1.4.2beta01             14    10402  14.so.14.2[.0]
- *    1.4.2rc02-06            14    10402  14.so.14.2[.0]
- *    1.4.2                   14    10402  14.so.14.2[.0]
+ *    1.5.0beta01-09          15    10500  15.so.15.0[.0]
 *
 *    Henceforth the source version will match the shared-library major
 *    and minor numbers; the shared-library major version number will be
@@ -173,7 +169,7 @@
 *
 * This code is released under the libpng license.
 *
- * libpng versions 1.2.6, August 15, 2004, through 1.4.2, May 6, 2010, are
+ * libpng versions 1.2.6, August 15, 2004, through 1.5.0beta09, February 19, 2010, are
 * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
 * distributed according to the same disclaimer and license as libpng-1.2.5
 * with the following individual added to the list of Contributing Authors:
@@ -285,13 +281,13 @@
 * Y2K compliance in libpng:
 * =========================
 *
- *    May 6, 2010
+ *    February 19, 2010
 *
 *    Since the PNG Development group is an ad-hoc body, we can't make
 *    an official declaration.
 *
 *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.4.2 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.5.0beta09 are Y2K compliant.  It is my belief that earlier
 *    versions were also Y2K compliant.
 *
 *    Libpng only has three year fields.  One is a 2-byte unsigned integer
@@ -347,22 +343,22 @@
 */

 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.4.2"
+#define PNG_LIBPNG_VER_STRING "1.5.0beta09"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.4.2 - May 6, 2010\n"
+   " libpng version 1.5.0beta09 - February 19, 2010\n"

-#define PNG_LIBPNG_VER_SONUM   14
-#define PNG_LIBPNG_VER_DLLNUM  14
+#define PNG_LIBPNG_VER_SONUM   15
+#define PNG_LIBPNG_VER_DLLNUM  15

 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   4
-#define PNG_LIBPNG_VER_RELEASE 2
+#define PNG_LIBPNG_VER_MINOR   5
+#define PNG_LIBPNG_VER_RELEASE 0
 /* This should match the numeric part of the final component of
 * PNG_LIBPNG_VER_STRING, omitting any leading zero:
 */

-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  09

 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -387,7 +383,7 @@
 * version 1.0.0 was mis-numbered 100 instead of 10000).  From
 * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release
 */
-#define PNG_LIBPNG_VER 10402 /* 1.4.2 */
+#define PNG_LIBPNG_VER 10500 /* 1.5.0 */

 #ifndef PNG_VERSION_INFO_ONLY
 /* Include the compression library's header */
@@ -591,308 +587,16 @@ typedef png_unknown_chunk FAR * png_unknown_chunkp;
 typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
 #endif

-/* png_info is a structure that holds the information in a PNG file so
- * that the application can find out the characteristics of the image.
- * If you are reading the file, this structure will tell you what is
- * in the PNG file.  If you are writing the file, fill in the information
- * you want to put into the PNG file, then call png_write_info().
- * The names chosen should be very close to the PNG specification, so
- * consult that document for information about the meaning of each field.
- *
- * With libpng < 0.95, it was only possible to directly set and read the
- * the values in the png_info_struct, which meant that the contents and
- * order of the values had to remain fixed.  With libpng 0.95 and later,
- * however, there are now functions that abstract the contents of
- * png_info_struct from the application, so this makes it easier to use
- * libpng with dynamic libraries, and even makes it possible to use
- * libraries that don't have all of the libpng ancillary chunk-handing
- * functionality.
- *
- * In any case, the order of the parameters in png_info_struct should NOT
- * be changed for as long as possible to keep compatibility with applications
- * that use the old direct-access method with png_info_struct.
- *
- * The following members may have allocated storage attached that should be
- * cleaned up before the structure is discarded: palette, trans, text,
- * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, row_pointers, and unknowns.   By default, these
- * are automatically freed when the info structure is deallocated, if they were
- * allocated internally by libpng.  This behavior can be changed by means
- * of the png_data_freer() function.
- *
- * More allocation details: all the chunk-reading functions that
- * change these members go through the corresponding png_set_*
- * functions.  A function to clear these members is available: see
- * png_free_data().  The png_set_* functions do not depend on being
- * able to point info structure members to any of the storage they are
- * passed (they make their own copies), EXCEPT that the png_set_text
- * functions use the same storage passed to them in the text_ptr or
- * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
- * functions do not make their own copies.
+/* CAUTION: Applications should not define this. If they do, ABI
+ * compatibility of the application with libpng from one libpng
+ * release to the next is not assured. It should only be defined
+ * while building libpng.
 */
-typedef struct png_info_struct
-{
-   /* the following are necessary for every PNG file */
-   png_uint_32 width PNG_DEPSTRUCT;  /* width of image in pixels (from IHDR) */
-   png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */
-   png_uint_32 valid PNG_DEPSTRUCT;  /* valid chunk data (see PNG_INFO_
-                                        below) */
-   png_size_t rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed
-                                         row */
-   png_colorp palette PNG_DEPSTRUCT;      /* array of color values
-                                             (valid & PNG_INFO_PLTE) */
-   png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in
-                                             "palette" (PLTE) */
-   png_uint_16 num_trans PNG_DEPSTRUCT;   /* number of transparent palette
-                                             color (tRNS) */
-   png_byte bit_depth PNG_DEPSTRUCT;      /* 1, 2, 4, 8, or 16 bits/channel
-                                             (from IHDR) */
-   png_byte color_type PNG_DEPSTRUCT;     /* see PNG_COLOR_TYPE_ below
-                                             (from IHDR) */
-   /* The following three should have been named *_method not *_type */
-   png_byte compression_type PNG_DEPSTRUCT; /* must be
-                                             PNG_COMPRESSION_TYPE_BASE (IHDR) */
-   png_byte filter_type PNG_DEPSTRUCT;    /* must be PNG_FILTER_TYPE_BASE
-                                             (from IHDR) */
-   png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE,
-                                             PNG_INTERLACE_ADAM7 */
-
-   /* The following is informational only on read, and not used on writes. */
-   png_byte channels PNG_DEPSTRUCT;       /* number of data channels per
-                                             pixel (1, 2, 3, 4) */
-   png_byte pixel_depth PNG_DEPSTRUCT;    /* number of bits per pixel */
-   png_byte spare_byte PNG_DEPSTRUCT;     /* to align the data, and for
-                                             future use */
-   png_byte signature[8] PNG_DEPSTRUCT;   /* magic bytes read by libpng
-                                             from start of file */
-
-   /* The rest of the data is optional.  If you are reading, check the
-    * valid field to see if the information in these are valid.  If you
-    * are writing, set the valid field to those chunks you want written,
-    * and initialize the appropriate fields below.
-    */
-
-#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
-   /* The gAMA chunk describes the gamma characteristics of the system
-    * on which the image was created, normally in the range [1.0, 2.5].
-    * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
-    */
-   float gamma PNG_DEPSTRUCT; /* gamma value of image,
-                                 if (valid & PNG_INFO_gAMA) */
+#ifdef PNG_EXPOSE_INTERNAL_STRUCTURES
+#include "pnginfo.h"
 #endif

-#ifdef PNG_sRGB_SUPPORTED
-    /* GR-P, 0.96a */
-    /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
-   png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent
-                                          [0, 1, 2, or 3] */
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
-   /* The tEXt, and zTXt chunks contain human-readable textual data in
-    * uncompressed, compressed, and optionally compressed forms, respectively.
-    * The data in "text" is an array of pointers to uncompressed,
-    * null-terminated C strings. Each chunk has a keyword that describes the
-    * textual data contained in that chunk.  Keywords are not required to be
-    * unique, and the text string may be empty.  Any number of text chunks may
-    * be in an image.
-    */
-   int num_text PNG_DEPSTRUCT; /* number of comments read/to write */
-   int max_text PNG_DEPSTRUCT; /* current size of text array */
-   png_textp text PNG_DEPSTRUCT; /* array of comments read/to write */
-#endif /* PNG_TEXT_SUPPORTED */
-
-#ifdef PNG_tIME_SUPPORTED
-   /* The tIME chunk holds the last time the displayed image data was
-    * modified.  See the png_time struct for the contents of this struct.
-    */
-   png_time mod_time PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_sBIT_SUPPORTED
-   /* The sBIT chunk specifies the number of significant high-order bits
-    * in the pixel data.  Values are in the range [1, bit_depth], and are
-    * only specified for the channels in the pixel data.  The contents of
-    * the low-order bits is not specified.  Data is valid if
-    * (valid & PNG_INFO_sBIT) is non-zero.
-    */
-   png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in color channels */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
-defined(PNG_READ_BACKGROUND_SUPPORTED)
-   /* The tRNS chunk supplies transparency data for paletted images and
-    * other image types that don't need a full alpha channel.  There are
-    * "num_trans" transparency values for a paletted image, stored in the
-    * same order as the palette colors, starting from index 0.  Values
-    * for the data are in the range [0, 255], ranging from fully transparent
-    * to fully opaque, respectively.  For non-paletted images, there is a
-    * single color specified that should be treated as fully transparent.
-    * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
-    */
-   png_bytep trans_alpha PNG_DEPSTRUCT;    /* alpha values for paletted
-                                              image */
-   png_color_16 trans_color PNG_DEPSTRUCT; /* transparent color for
-                                              non-palette image */
-#endif
-
-#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   /* The bKGD chunk gives the suggested image background color if the
-    * display program does not have its own background color and the image
-    * is needs to composited onto a background before display.  The colors
-    * in "background" are normally in the same color space/depth as the
-    * pixel data.  Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
-    */
-   png_color_16 background PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_oFFs_SUPPORTED
-   /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
-    * and downwards from the top-left corner of the display, page, or other
-    * application-specific co-ordinate space.  See the PNG_OFFSET_ defines
-    * below for the unit types.  Valid if (valid & PNG_INFO_oFFs) non-zero.
-    */
-   png_int_32 x_offset PNG_DEPSTRUCT; /* x offset on page */
-   png_int_32 y_offset PNG_DEPSTRUCT; /* y offset on page */
-   png_byte offset_unit_type PNG_DEPSTRUCT; /* offset units type */
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-   /* The pHYs chunk gives the physical pixel density of the image for
-    * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
-    * defines below).  Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
-    */
-   png_uint_32 x_pixels_per_unit PNG_DEPSTRUCT; /* horizontal pixel density */
-   png_uint_32 y_pixels_per_unit PNG_DEPSTRUCT; /* vertical pixel density */
-   png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see
-                                             PNG_RESOLUTION_ below) */
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-   /* The hIST chunk contains the relative frequency or importance of the
-    * various palette entries, so that a viewer can intelligently select a
-    * reduced-color palette, if required.  Data is an array of "num_palette"
-    * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
-    * is non-zero.
-    */
-   png_uint_16p hist PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-   /* The cHRM chunk describes the CIE color characteristics of the monitor
-    * on which the PNG was created.  This data allows the viewer to do gamut
-    * mapping of the input image to ensure that the viewer sees the same
-    * colors in the image as the creator.  Values are in the range
-    * [0.0, 0.8].  Data valid if (valid & PNG_INFO_cHRM) non-zero.
-    */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   float x_white PNG_DEPSTRUCT;
-   float y_white PNG_DEPSTRUCT;
-   float x_red PNG_DEPSTRUCT;
-   float y_red PNG_DEPSTRUCT;
-   float x_green PNG_DEPSTRUCT;
-   float y_green PNG_DEPSTRUCT;
-   float x_blue PNG_DEPSTRUCT;
-   float y_blue PNG_DEPSTRUCT;
-#endif
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-   /* The pCAL chunk describes a transformation between the stored pixel
-    * values and original physical data values used to create the image.
-    * The integer range [0, 2^bit_depth - 1] maps to the floating-point
-    * range given by [pcal_X0, pcal_X1], and are further transformed by a
-    * (possibly non-linear) transformation function given by "pcal_type"
-    * and "pcal_params" into "pcal_units".  Please see the PNG_EQUATION_
-    * defines below, and the PNG-Group's PNG extensions document for a
-    * complete description of the transformations and how they should be
-    * implemented, and for a description of the ASCII parameter strings.
-    * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
-    */
-   png_charp pcal_purpose PNG_DEPSTRUCT;  /* pCAL chunk description string */
-   png_int_32 pcal_X0 PNG_DEPSTRUCT;      /* minimum value */
-   png_int_32 pcal_X1 PNG_DEPSTRUCT;      /* maximum value */
-   png_charp pcal_units PNG_DEPSTRUCT;    /* Latin-1 string giving physical
-                                             units */
-   png_charpp pcal_params PNG_DEPSTRUCT;  /* ASCII strings containing
-                                             parameter values */
-   png_byte pcal_type PNG_DEPSTRUCT;      /* equation type
-                                             (see PNG_EQUATION_ below) */
-   png_byte pcal_nparams PNG_DEPSTRUCT;   /* number of parameters given
-                                             in pcal_params */
-#endif
-
-/* New members added in libpng-1.0.6 */
-   png_uint_32 free_me PNG_DEPSTRUCT;     /* flags items libpng is
-                                             responsible for freeing */
-
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
-   /* Storage for unknown chunks that the library doesn't recognize. */
-   png_unknown_chunkp unknown_chunks PNG_DEPSTRUCT;
-   png_size_t unknown_chunks_num PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
-   /* iCCP chunk data. */
-   png_charp iccp_name PNG_DEPSTRUCT;     /* profile name */
-   png_charp iccp_profile PNG_DEPSTRUCT;  /* International Color Consortium
-                                             profile data */
-                            /* Note to maintainer: should be png_bytep */
-   png_uint_32 iccp_proflen PNG_DEPSTRUCT;  /* ICC profile data length */
-   png_byte iccp_compression PNG_DEPSTRUCT; /* Always zero */
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-   /* Data on sPLT chunks (there may be more than one). */
-   png_sPLT_tp splt_palettes PNG_DEPSTRUCT;
-   png_uint_32 splt_palettes_num PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
-   /* The sCAL chunk describes the actual physical dimensions of the
-    * subject matter of the graphic.  The chunk contains a unit specification
-    * a byte value, and two ASCII strings representing floating-point
-    * values.  The values are width and height corresponsing to one pixel
-    * in the image.  This external representation is converted to double
-    * here.  Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
-    */
-   png_byte scal_unit PNG_DEPSTRUCT;         /* unit of physical scale */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   double scal_pixel_width PNG_DEPSTRUCT;    /* width of one pixel */
-   double scal_pixel_height PNG_DEPSTRUCT;   /* height of one pixel */
-#endif
-#ifdef PNG_FIXED_POINT_SUPPORTED
-   png_charp scal_s_width PNG_DEPSTRUCT;     /* string containing height */
-   png_charp scal_s_height PNG_DEPSTRUCT;    /* string containing width */
-#endif
-#endif
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-   /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
-      non-zero */
-   /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
-   png_bytepp row_pointers PNG_DEPSTRUCT;        /* the image bits */
-#endif
-
-#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
-   png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image,
-                                               if (valid & PNG_INFO_gAMA) */
-#endif
-
-#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
-   png_fixed_point int_x_white PNG_DEPSTRUCT;
-   png_fixed_point int_y_white PNG_DEPSTRUCT;
-   png_fixed_point int_x_red PNG_DEPSTRUCT;
-   png_fixed_point int_y_red PNG_DEPSTRUCT;
-   png_fixed_point int_x_green PNG_DEPSTRUCT;
-   png_fixed_point int_y_green PNG_DEPSTRUCT;
-   png_fixed_point int_x_blue PNG_DEPSTRUCT;
-   png_fixed_point int_y_blue PNG_DEPSTRUCT;
-#endif
-
-} png_info;
-
+typedef struct png_info_def png_info;
 typedef png_info FAR * png_infop;
 typedef png_info FAR * FAR * png_infopp;

@@ -1080,398 +784,19 @@ typedef void (PNGAPI *png_longjmp_ptr) PNGARG((jmp_buf, int));
 typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_alloc_size_t));
 typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp));

-/* The structure that holds the information to read and write PNG files.
- * The only people who need to care about what is inside of this are the
- * people who will be modifying the library for their own special needs.
- * It should NOT be accessed directly by an application, except to store
- * the jmp_buf.
+/* CAUTION: Applications should not define this. If they do, ABI
+ * compatibility of the application with libpng from one libpng
+ * release to the next is not assured. It should only be defined
+ * while building libpng.
 */
-
-struct png_struct_def
-{
-#ifdef PNG_SETJMP_SUPPORTED
-   jmp_buf jmpbuf PNG_DEPSTRUCT;            /* used in png_error */
-   png_longjmp_ptr longjmp_fn PNG_DEPSTRUCT;/* setjmp non-local goto
-                                               function. */
+#ifdef PNG_EXPOSE_INTERNAL_STRUCTURES
+#include "pngstruct.h"
 #endif
-   png_error_ptr error_fn PNG_DEPSTRUCT;    /* function for printing
-                                               errors and aborting */
-   png_error_ptr warning_fn PNG_DEPSTRUCT;  /* function for printing
-                                               warnings */
-   png_voidp error_ptr PNG_DEPSTRUCT;       /* user supplied struct for
-                                               error functions */
-   png_rw_ptr write_data_fn PNG_DEPSTRUCT;  /* function for writing
-                                               output data */
-   png_rw_ptr read_data_fn PNG_DEPSTRUCT;   /* function for reading
-                                               input data */
-   png_voidp io_ptr PNG_DEPSTRUCT;          /* ptr to application struct
-                                               for I/O functions */
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-   png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read
-                                                                 transform */
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-   png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write
-                                                                  transform */
-#endif
-
-/* These were added in libpng-1.0.2 */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
-    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-   png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct
-                                                  for user transform */
-   png_byte user_transform_depth PNG_DEPSTRUCT;    /* bit depth of user
-                                                      transformed pixels */
-   png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user
-                                                      transformed pixels */
-#endif
-#endif
-
-   png_uint_32 mode PNG_DEPSTRUCT;          /* tells us where we are in
-                                               the PNG file */
-   png_uint_32 flags PNG_DEPSTRUCT;         /* flags indicating various
-                                               things to libpng */
-   png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations
-                                                 to perform */
-
-   z_stream zstream PNG_DEPSTRUCT;          /* pointer to decompression
-                                               structure (below) */
-   png_bytep zbuf PNG_DEPSTRUCT;            /* buffer for zlib */
-   png_size_t zbuf_size PNG_DEPSTRUCT;      /* size of zbuf */
-   int zlib_level PNG_DEPSTRUCT;            /* holds zlib compression level */
-   int zlib_method PNG_DEPSTRUCT;           /* holds zlib compression method */
-   int zlib_window_bits PNG_DEPSTRUCT;      /* holds zlib compression window
-                                               bits */
-   int zlib_mem_level PNG_DEPSTRUCT;        /* holds zlib compression memory
-                                               level */
-   int zlib_strategy PNG_DEPSTRUCT;         /* holds zlib compression
-                                               strategy */
-
-   png_uint_32 width PNG_DEPSTRUCT;         /* width of image in pixels */
-   png_uint_32 height PNG_DEPSTRUCT;        /* height of image in pixels */
-   png_uint_32 num_rows PNG_DEPSTRUCT;      /* number of rows in current pass */
-   png_uint_32 usr_width PNG_DEPSTRUCT;     /* width of row at start of write */
-   png_size_t rowbytes PNG_DEPSTRUCT;       /* size of row in bytes */
-#if 0 /* Replaced with the following in libpng-1.4.1 */
-   png_size_t irowbytes PNG_DEPSTRUCT;
-#endif
-/* Added in libpng-1.4.1 */
-#ifdef PNG_USER_LIMITS_SUPPORTED
-   /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
-    * can occupy when decompressed.  0 means unlimited.
-    * We will change the typedef from png_size_t to png_alloc_size_t
-    * in libpng-1.6.0
-    */
-   png_alloc_size_t user_chunk_malloc_max PNG_DEPSTRUCT;
-#endif
-   png_uint_32 iwidth PNG_DEPSTRUCT;        /* width of current interlaced
-                                               row in pixels */
-   png_uint_32 row_number PNG_DEPSTRUCT;    /* current row in interlace pass */
-   png_bytep prev_row PNG_DEPSTRUCT;        /* buffer to save previous
-                                               (unfiltered) row */
-   png_bytep row_buf PNG_DEPSTRUCT;         /* buffer to save current
-                                               (unfiltered) row */
-   png_bytep sub_row PNG_DEPSTRUCT;         /* buffer to save "sub" row
-                                               when filtering */
-   png_bytep up_row PNG_DEPSTRUCT;          /* buffer to save "up" row
-                                               when filtering */
-   png_bytep avg_row PNG_DEPSTRUCT;         /* buffer to save "avg" row
-                                               when filtering */
-   png_bytep paeth_row PNG_DEPSTRUCT;       /* buffer to save "Paeth" row
-                                               when filtering */
-   png_row_info row_info PNG_DEPSTRUCT;     /* used for transformation
-                                               routines */
-
-   png_uint_32 idat_size PNG_DEPSTRUCT;     /* current IDAT size for read */
-   png_uint_32 crc PNG_DEPSTRUCT;           /* current chunk CRC value */
-   png_colorp palette PNG_DEPSTRUCT;        /* palette from the input file */
-   png_uint_16 num_palette PNG_DEPSTRUCT;   /* number of color entries in
-                                               palette */
-   png_uint_16 num_trans PNG_DEPSTRUCT;     /* number of transparency values */
-   png_byte chunk_name[5] PNG_DEPSTRUCT;    /* null-terminated name of current
-                                               chunk */
-   png_byte compression PNG_DEPSTRUCT;      /* file compression type
-                                               (always 0) */
-   png_byte filter PNG_DEPSTRUCT;           /* file filter type (always 0) */
-   png_byte interlaced PNG_DEPSTRUCT;       /* PNG_INTERLACE_NONE,
-                                               PNG_INTERLACE_ADAM7 */
-   png_byte pass PNG_DEPSTRUCT;             /* current interlace pass (0 - 6) */
-   png_byte do_filter PNG_DEPSTRUCT;        /* row filter flags (see
-                                               PNG_FILTER_ below ) */
-   png_byte color_type PNG_DEPSTRUCT;       /* color type of file */
-   png_byte bit_depth PNG_DEPSTRUCT;        /* bit depth of file */
-   png_byte usr_bit_depth PNG_DEPSTRUCT;    /* bit depth of users row */
-   png_byte pixel_depth PNG_DEPSTRUCT;      /* number of bits per pixel */
-   png_byte channels PNG_DEPSTRUCT;         /* number of channels in file */
-   png_byte usr_channels PNG_DEPSTRUCT;     /* channels at start of write */
-   png_byte sig_bytes PNG_DEPSTRUCT;        /* magic bytes read/written from
-                                               start of file */
-
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
-   png_uint_16 filler PNG_DEPSTRUCT;           /* filler bytes for pixel
-                                                  expansion */
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
-   png_byte background_gamma_type PNG_DEPSTRUCT;
-#  ifdef PNG_FLOATING_POINT_SUPPORTED
-   float background_gamma PNG_DEPSTRUCT;
-#  endif
-   png_color_16 background PNG_DEPSTRUCT;   /* background color in
-                                               screen gamma space */
-#ifdef PNG_READ_GAMMA_SUPPORTED
-   png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized
-                                               to gamma 1.0 */
-#endif
-#endif /* PNG_bKGD_SUPPORTED */
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-   png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing
-                                               output */
-   png_uint_32 flush_dist PNG_DEPSTRUCT;    /* how many rows apart to flush,
-                                               0 - no flush */
-   png_uint_32 flush_rows PNG_DEPSTRUCT;    /* number of rows written since
-                                               last flush */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   int gamma_shift PNG_DEPSTRUCT;      /* number of "insignificant" bits
-                                          16-bit gamma */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   float gamma PNG_DEPSTRUCT;          /* file gamma value */
-   float screen_gamma PNG_DEPSTRUCT;   /* screen gamma value
-                                          (display_exponent) */
-#endif
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   png_bytep gamma_table PNG_DEPSTRUCT;     /* gamma table for 8-bit
-                                               depth files */
-   png_bytep gamma_from_1 PNG_DEPSTRUCT;    /* converts from 1.0 to screen */
-   png_bytep gamma_to_1 PNG_DEPSTRUCT;      /* converts from file to 1.0 */
-   png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit
-                                                  depth files */
-   png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to
-                                                   screen */
-   png_uint_16pp gamma_16_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
-   png_color_8 sig_bit PNG_DEPSTRUCT;       /* significant bits in each
-                                               available channel */
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
-   png_color_8 shift PNG_DEPSTRUCT;         /* shift for significant bit
-                                               tranformation */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
- || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   png_bytep trans_alpha PNG_DEPSTRUCT;           /* alpha values for
-                                                     paletted files */
-   png_color_16 trans_color PNG_DEPSTRUCT;  /* transparent color for
-                                               non-paletted files */
-#endif
-
-   png_read_status_ptr read_row_fn PNG_DEPSTRUCT;   /* called after each
-                                                       row is decoded */
-   png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each
-                                                       row is encoded */
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-   png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header
-                                                      data fully read */
-   png_progressive_row_ptr row_fn PNG_DEPSTRUCT;   /* called after each
-                                                      prog. row is decoded */
-   png_progressive_end_ptr end_fn PNG_DEPSTRUCT;   /* called after image
-                                                      is complete */
-   png_bytep save_buffer_ptr PNG_DEPSTRUCT;        /* current location in
-                                                      save_buffer */
-   png_bytep save_buffer PNG_DEPSTRUCT;            /* buffer for previously
-                                                      read data */
-   png_bytep current_buffer_ptr PNG_DEPSTRUCT;     /* current location in
-                                                      current_buffer */
-   png_bytep current_buffer PNG_DEPSTRUCT;         /* buffer for recently
-                                                      used data */
-   png_uint_32 push_length PNG_DEPSTRUCT;          /* size of current input
-                                                      chunk */
-   png_uint_32 skip_length PNG_DEPSTRUCT;          /* bytes to skip in
-                                                      input data */
-   png_size_t save_buffer_size PNG_DEPSTRUCT;      /* amount of data now
-                                                      in save_buffer */
-   png_size_t save_buffer_max PNG_DEPSTRUCT;       /* total size of
-                                                      save_buffer */
-   png_size_t buffer_size PNG_DEPSTRUCT;           /* total amount of
-                                                      available input data */
-   png_size_t current_buffer_size PNG_DEPSTRUCT;   /* amount of data now
-                                                      in current_buffer */
-   int process_mode PNG_DEPSTRUCT;                 /* what push library
-                                                      is currently doing */
-   int cur_palette PNG_DEPSTRUCT;                  /* current push library
-                                                      palette index */
-
-#  ifdef PNG_TEXT_SUPPORTED
-     png_size_t current_text_size PNG_DEPSTRUCT;   /* current size of
-                                                      text input data */
-     png_size_t current_text_left PNG_DEPSTRUCT;   /* how much text left
-                                                      to read in input */
-     png_charp current_text PNG_DEPSTRUCT;         /* current text chunk
-                                                      buffer */
-     png_charp current_text_ptr PNG_DEPSTRUCT;     /* current location
-                                                      in current_text */
-#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
-
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
-   png_bytepp offset_table_ptr PNG_DEPSTRUCT;
-   png_bytep offset_table PNG_DEPSTRUCT;
-   png_uint_16 offset_table_number PNG_DEPSTRUCT;
-   png_uint_16 offset_table_count PNG_DEPSTRUCT;
-   png_uint_16 offset_table_count_free PNG_DEPSTRUCT;
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-   png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for quantizing */
-   png_bytep quantize_index PNG_DEPSTRUCT; /* index translation for palette
-                                              files */
-#endif
-
-#if defined(PNG_READ_QUANTIZE_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
-   png_uint_16p hist PNG_DEPSTRUCT;                /* histogram */
-#endif
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-   png_byte heuristic_method PNG_DEPSTRUCT;        /* heuristic for row
-                                                      filter selection */
-   png_byte num_prev_filters PNG_DEPSTRUCT;        /* number of weights
-                                                      for previous rows */
-   png_bytep prev_filters PNG_DEPSTRUCT;           /* filter type(s) of
-                                                      previous row(s) */
-   png_uint_16p filter_weights PNG_DEPSTRUCT;      /* weight(s) for previous
-                                                      line(s) */
-   png_uint_16p inv_filter_weights PNG_DEPSTRUCT;  /* 1/weight(s) for
-                                                      previous line(s) */
-   png_uint_16p filter_costs PNG_DEPSTRUCT;        /* relative filter
-                                                      calculation cost */
-   png_uint_16p inv_filter_costs PNG_DEPSTRUCT;    /* 1/relative filter
-                                                      calculation cost */
-#endif
-
-#ifdef PNG_TIME_RFC1123_SUPPORTED
-   png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */
-#endif
-
-/* New members added in libpng-1.0.6 */
-
-   png_uint_32 free_me PNG_DEPSTRUCT;    /* flags items libpng is
-                                            responsible for freeing */
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
-   png_voidp user_chunk_ptr PNG_DEPSTRUCT;
-   png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read
-                                                           chunk handler */
-#endif
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-   int num_chunk_list PNG_DEPSTRUCT;
-   png_bytep chunk_list PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.0.3 */
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-   png_byte rgb_to_gray_status PNG_DEPSTRUCT;
-   /* These were changed from png_byte in libpng-1.0.6 */
-   png_uint_16 rgb_to_gray_red_coeff PNG_DEPSTRUCT;
-   png_uint_16 rgb_to_gray_green_coeff PNG_DEPSTRUCT;
-   png_uint_16 rgb_to_gray_blue_coeff PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
-    defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
-    defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-/* Changed from png_byte to png_uint_32 at version 1.2.0 */
-   png_uint_32 mng_features_permitted PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.7 */
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
-   png_fixed_point int_gamma PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-   png_byte filter_type PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.2.0 */
-
-/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-#ifdef PNG_USER_MEM_SUPPORTED
-   png_voidp mem_ptr PNG_DEPSTRUCT;             /* user supplied struct for
-                                                   mem functions */
-   png_malloc_ptr malloc_fn PNG_DEPSTRUCT;      /* function for
-                                                   allocating memory */
-   png_free_ptr free_fn PNG_DEPSTRUCT;          /* function for
-                                                   freeing memory */
-#endif
-
-/* New member added in libpng-1.0.13 and 1.2.0 */
-   png_bytep big_row_buf PNG_DEPSTRUCT;         /* buffer to save current
-                                                   (unfiltered) row */
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* The following three members were added at version 1.0.14 and 1.2.4 */
-   png_bytep quantize_sort PNG_DEPSTRUCT;          /* working sort array */
-   png_bytep index_to_palette PNG_DEPSTRUCT;       /* where the original
-                                                     index currently is
-                                                     in the palette */
-   png_bytep palette_to_index PNG_DEPSTRUCT;       /* which original index
-                                                      points to this
-                                                      palette color */
-#endif
-
-/* New members added in libpng-1.0.16 and 1.2.6 */
-   png_byte compression_type PNG_DEPSTRUCT;
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
-   png_uint_32 user_width_max PNG_DEPSTRUCT;
-   png_uint_32 user_height_max PNG_DEPSTRUCT;
-   /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
-    * chunks that can be stored (0 means unlimited).
-    */
-   png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT;
-#endif
-
-/* New member added in libpng-1.0.25 and 1.2.17 */
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-   /* Storage for unknown chunk that the library doesn't recognize. */
-   png_unknown_chunk unknown_chunk PNG_DEPSTRUCT;
-#endif
-
-/* New members added in libpng-1.2.26 */
-  png_uint_32 old_big_row_buf_size PNG_DEPSTRUCT;
-  png_uint_32 old_prev_row_size PNG_DEPSTRUCT;
-
-/* New member added in libpng-1.2.30 */
-  png_charp chunkdata PNG_DEPSTRUCT;  /* buffer for reading chunk data */
-
-#ifdef PNG_IO_STATE_SUPPORTED
-/* New member added in libpng-1.4.0 */
-   png_uint_32 io_state PNG_DEPSTRUCT;
-#endif
-};
-

 /* This triggers a compiler error in png.c, if png.c and png.h
 * do not agree upon the version number.
 */
-typedef png_structp version_1_4_2;
+typedef png_structp version_1_5_0beta09;

 typedef png_struct FAR * FAR * png_structpp;

@@ -1498,11 +823,6 @@ extern PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr,
 extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start,
   png_size_t num_to_check));

-/* Simple signature checking function.  This is the same as calling
- * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
- */
-#define png_check_sig(sig,n) !png_sig_cmp((sig), 0, (n))
-
 /* Allocate and initialize png_ptr struct for reading, and any other memory. */
 extern PNG_EXPORT(png_structp,png_create_read_struct)
   PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
@@ -1539,11 +859,16 @@ extern PNG_EXPORT(jmp_buf*, png_set_longjmp_fn)
 #  define png_jmpbuf(png_ptr) \
   (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
 #endif
+/* This function should be used by libpng applications in place of
+ * longjmp(png_ptr->jmpbuf, val).  If longjmp_fn() has been set, it
+ * will use it; otherwise it will call PNG_ABORT().  This function was
+ * added in libpng-1.5.0.
+ */
+extern PNG_EXPORT(void, png_longjmp) PNGARG((png_structp png_ptr, int val))
+    PNG_NORETURN ;

-#ifdef PNG_READ_SUPPORTED
 /* Reset the compression stream */
 extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
-#endif

 /* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
 #ifdef PNG_USER_MEM_SUPPORTED
@@ -1720,16 +1045,14 @@ extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
 extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* Turn on quantizing, and reduce the palette to the number of colors
- * available.  Prior to libpng-1.4.2, this was png_set_dither().
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* Turn on dithering, and reduce the palette to the number of colors
+ * available.
 */
-extern PNG_EXPORT(void,png_set_quantize) PNGARG((png_structp png_ptr,
+extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr,
   png_colorp palette, int num_palette, int maximum_colors,
-   png_uint_16p histogram, int full_quantize));
+   png_uint_16p histogram, int full_dither));
 #endif
-/* This migration aid will be removed from libpng-1.5.0 */
-#define png_set_dither png_set_quantize

 #ifdef PNG_READ_GAMMA_SUPPORTED
 /* Handle gamma correction. Screen_gamma=(display_exponent) */
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,7 +1,7 @@

 /* pngconf.h - machine configurable file for libpng
 *
- * libpng version 1.4.2 - May 6, 2010
+ * libpng version 1.5.0beta09 - February 19, 2010
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -391,32 +391,18 @@

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

-/* This controls how fine the quantizing gets.  As this allocates
+/* This controls how fine the dithering 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.
+ * with dithering quality can decrease some or all of these.
 */
-
-/* Prior to libpng-1.4.2, these were PNG_DITHER_*_BITS
- * These migration aids will be removed from libpng-1.5.0.
- */
-#ifdef PNG_DITHER_RED_BITS
-#  define PNG_QUANTIZE_RED_BITS PNG_DITHER_RED_BITS
+#ifndef PNG_DITHER_RED_BITS
+#  define PNG_DITHER_RED_BITS 5
 #endif
-#ifdef PNG_DITHER_GREEN_BITS
-#  define PNG_QUANTIZE_GREEN_BITS PNG_DITHER_GREEN_BITS
+#ifndef PNG_DITHER_GREEN_BITS
+#  define PNG_DITHER_GREEN_BITS 5
 #endif
-#ifdef PNG_DITHER_BLUE_BITS
-#  define PNG_QUANTIZE_BLUE_BITS PNG_DITHER_BLUE_BITS
-#endif
-
-#ifndef PNG_QUANTIZE_RED_BITS
-#  define PNG_QUANTIZE_RED_BITS 5
-#endif
-#ifndef PNG_QUANTIZE_GREEN_BITS
-#  define PNG_QUANTIZE_GREEN_BITS 5
-#endif
-#ifndef PNG_QUANTIZE_BLUE_BITS
-#  define PNG_QUANTIZE_BLUE_BITS 5
+#ifndef PNG_DITHER_BLUE_BITS
+#  define PNG_DITHER_BLUE_BITS 5
 #endif

 /* This controls how fine the gamma correction becomes when you
@@ -513,12 +499,11 @@
 #  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
+#if 0 /* removed from libpng-1.4.0 */
+#  ifndef PNG_NO_READ_DITHER
+#    define PNG_READ_DITHER_SUPPORTED
 #  endif
+#endif /* 0 */
 #  ifndef PNG_NO_READ_BACKGROUND
 #    define PNG_READ_BACKGROUND_SUPPORTED
 #  endif
@@ -704,8 +689,8 @@
 #endif

 /* Added at libpng-1.2.43 */
-#ifndef PNG_USER_LIMITS_SUPPORTED
-#  ifndef PNG_NO_USER_LIMITS
+#ifndef PNG_NO_USER_LIMITS
+#  ifndef PNG_USER_LIMITS_SUPPORTED
 #    define PNG_USER_LIMITS_SUPPORTED
 #  endif
 #endif
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@

 /* pngerror.c - stub functions for i/o and memory allocation
 *
- * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,6 +16,7 @@
 * at each function.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@@ -242,7 +243,7 @@ png_set_longjmp_fn(png_structp png_ptr, png_longjmp_ptr longjmp_fn,
      return NULL;

   png_ptr->longjmp_fn = longjmp_fn;
-   return &png_ptr->jmpbuf;
+   return &png_ptr->png_jmpbuf;
 }
 #endif

@@ -288,26 +289,31 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
      fprintf(stderr, PNG_STRING_NEWLINE);
   }
 #endif
+   png_longjmp(png_ptr, 1);
+#ifndef PNG_CONSOLE_IO_SUPPORTED
+   error_message = error_message; /* Make compiler happy */
+#endif
+}

+void PNGAPI
+png_longjmp(png_structp png_ptr, int val)
+{
 #ifdef PNG_SETJMP_SUPPORTED
   if (png_ptr && png_ptr->longjmp_fn)
   {
 #  ifdef USE_FAR_KEYWORD
   {
-      jmp_buf jmpbuf;
-      png_memcpy(jmpbuf, png_ptr->jmpbuf, png_sizeof(jmp_buf));
-     png_ptr->longjmp_fn(jmpbuf, 1);
+      jmp_buf png_jmpbuf;
+      png_memcpy(png_jmpbuf, png_ptr->png_jmpbuf, png_sizeof(jmp_buf));
+     png_ptr->longjmp_fn(png_jmpbuf, val);
   }
 #  else
-   png_ptr->longjmp_fn(png_ptr->jmpbuf, 1);
+   png_ptr->longjmp_fn(png_ptr->png_jmpbuf, val);
 #  endif
   }
 #endif
   /* Here if not setjmp support or if png_ptr is null. */
   PNG_ABORT();
-#ifndef PNG_CONSOLE_IO_SUPPORTED
-   error_message = error_message; /* Make compiler happy */
-#endif
 }

 #ifdef PNG_WARNINGS_SUPPORTED
@@ -361,7 +367,7 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
 /* This function is called when the application wants to use another method
 * of handling errors and warnings.  Note that the error function MUST NOT
 * return to the calling routine or serious problems will occur.  The return
- * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
+ * method used in the default routine calls longjmp(png_ptr->png_jmpbuf, 1)
 */
 void PNGAPI
 png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@

 /* pngget.c - retrieval of values from info struct
 *
- * Last changed in libpng 1.4.2 [May 6, 2010]
+ * Last changed in libpng 1.4.1 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -12,6 +12,7 @@
 *
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
--- a/pnginfo.h
+++ b/pnginfo.h
@@ -0,0 +1,290 @@
+
+/* pnginfo.h - header file for PNG reference library
+ *
+ * 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.)
+ *
+ * Last changed in libpng version 1.5.0 - February 19, 2010
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+ /* png_info is a structure that holds the information in a PNG file so
+ * that the application can find out the characteristics of the image.
+ * If you are reading the file, this structure will tell you what is
+ * in the PNG file.  If you are writing the file, fill in the information
+ * you want to put into the PNG file, using png_set_*() functions, then
+ * call png_write_info().
+ *
+ * The names chosen should be very close to the PNG specification, so
+ * consult that document for information about the meaning of each field.
+ *
+ * With libpng < 0.95, it was only possible to directly set and read the
+ * the values in the png_info_struct, which meant that the contents and
+ * order of the values had to remain fixed.  With libpng 0.95 and later,
+ * however, there are now functions that abstract the contents of
+ * png_info_struct from the application, so this makes it easier to use
+ * libpng with dynamic libraries, and even makes it possible to use
+ * libraries that don't have all of the libpng ancillary chunk-handing
+ * functionality.  In libpng-1.5.0 this was moved into a separate private
+ * file that is not visible to applications.
+ *
+ * The following members may have allocated storage attached that should be
+ * cleaned up before the structure is discarded: palette, trans, text,
+ * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
+ * splt_palettes, scal_unit, row_pointers, and unknowns.   By default, these
+ * are automatically freed when the info structure is deallocated, if they were
+ * allocated internally by libpng.  This behavior can be changed by means
+ * of the png_data_freer() function.
+ *
+ * More allocation details: all the chunk-reading functions that
+ * change these members go through the corresponding png_set_*
+ * functions.  A function to clear these members is available: see
+ * png_free_data().  The png_set_* functions do not depend on being
+ * able to point info structure members to any of the storage they are
+ * passed (they make their own copies), EXCEPT that the png_set_text
+ * functions use the same storage passed to them in the text_ptr or
+ * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
+ * functions do not make their own copies.
+ */
+struct png_info_def
+{
+   /* the following are necessary for every PNG file */
+   png_uint_32 width;  /* width of image in pixels (from IHDR) */
+   png_uint_32 height; /* height of image in pixels (from IHDR) */
+   png_uint_32 valid;  /* valid chunk data (see PNG_INFO_ below) */
+   png_size_t rowbytes; /* bytes needed to hold an untransformed row */
+   png_colorp palette;      /* array of color values (valid & PNG_INFO_PLTE) */
+   png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
+   png_uint_16 num_trans;   /* number of transparent palette color (tRNS) */
+   png_byte bit_depth;      /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
+   png_byte color_type;     /* see PNG_COLOR_TYPE_ below (from IHDR) */
+   /* The following three should have been named *_method not *_type */
+   png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
+   png_byte filter_type;    /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
+   png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+
+   /* The following is informational only on read, and not used on writes. */
+   png_byte channels;       /* number of data channels per pixel (1, 2, 3, 4) */
+   png_byte pixel_depth;    /* number of bits per pixel */
+   png_byte spare_byte;     /* to align the data, and for future use */
+   png_byte signature[8];   /* magic bytes read by libpng from start of file */
+
+   /* The rest of the data is optional.  If you are reading, check the
+    * valid field to see if the information in these are valid.  If you
+    * are writing, set the valid field to those chunks you want written,
+    * and initialize the appropriate fields below.
+    */
+
+#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
+   /* The gAMA chunk describes the gamma characteristics of the system
+    * on which the image was created, normally in the range [1.0, 2.5].
+    * Data is valid if (valid & PNG_INFO_gAMA) is non-zero.
+    */
+   float gamma; /* gamma value of image, if (valid & PNG_INFO_gAMA) */
+#endif
+
+#ifdef PNG_sRGB_SUPPORTED
+    /* GR-P, 0.96a */
+    /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */
+   png_byte srgb_intent; /* sRGB rendering intent [0, 1, 2, or 3] */
+#endif
+
+#ifdef PNG_TEXT_SUPPORTED
+   /* The tEXt, and zTXt chunks contain human-readable textual data in
+    * uncompressed, compressed, and optionally compressed forms, respectively.
+    * The data in "text" is an array of pointers to uncompressed,
+    * null-terminated C strings. Each chunk has a keyword that describes the
+    * textual data contained in that chunk.  Keywords are not required to be
+    * unique, and the text string may be empty.  Any number of text chunks may
+    * be in an image.
+    */
+   int num_text; /* number of comments read or comments to write */
+   int max_text; /* current size of text array */
+   png_textp text; /* array of comments read or comments to write */
+#endif /* PNG_TEXT_SUPPORTED */
+
+#ifdef PNG_tIME_SUPPORTED
+   /* The tIME chunk holds the last time the displayed image data was
+    * modified.  See the png_time struct for the contents of this struct.
+    */
+   png_time mod_time;
+#endif
+
+#ifdef PNG_sBIT_SUPPORTED
+   /* The sBIT chunk specifies the number of significant high-order bits
+    * in the pixel data.  Values are in the range [1, bit_depth], and are
+    * only specified for the channels in the pixel data.  The contents of
+    * the low-order bits is not specified.  Data is valid if
+    * (valid & PNG_INFO_sBIT) is non-zero.
+    */
+   png_color_8 sig_bit; /* significant bits in color channels */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
+defined(PNG_READ_BACKGROUND_SUPPORTED)
+   /* The tRNS chunk supplies transparency data for paletted images and
+    * other image types that don't need a full alpha channel.  There are
+    * "num_trans" transparency values for a paletted image, stored in the
+    * same order as the palette colors, starting from index 0.  Values
+    * for the data are in the range [0, 255], ranging from fully transparent
+    * to fully opaque, respectively.  For non-paletted images, there is a
+    * single color specified that should be treated as fully transparent.
+    * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
+    */
+   png_bytep trans;    /* alpha values for paletted image */
+   png_bytep trans_alpha;    /* alpha values for paletted image */
+   png_color_16 trans_color; /* transparent color for non-palette image */
+#endif
+
+#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+   /* The bKGD chunk gives the suggested image background color if the
+    * display program does not have its own background color and the image
+    * is needs to composited onto a background before display.  The colors
+    * in "background" are normally in the same color space/depth as the
+    * pixel data.  Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
+    */
+   png_color_16 background;
+#endif
+
+#ifdef PNG_oFFs_SUPPORTED
+   /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
+    * and downwards from the top-left corner of the display, page, or other
+    * application-specific co-ordinate space.  See the PNG_OFFSET_ defines
+    * below for the unit types.  Valid if (valid & PNG_INFO_oFFs) non-zero.
+    */
+   png_int_32 x_offset; /* x offset on page */
+   png_int_32 y_offset; /* y offset on page */
+   png_byte offset_unit_type; /* offset units type */
+#endif
+
+#ifdef PNG_pHYs_SUPPORTED
+   /* The pHYs chunk gives the physical pixel density of the image for
+    * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
+    * defines below).  Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
+    */
+   png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
+   png_uint_32 y_pixels_per_unit; /* vertical pixel density */
+   png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
+#endif
+
+#ifdef PNG_hIST_SUPPORTED
+   /* The hIST chunk contains the relative frequency or importance of the
+    * various palette entries, so that a viewer can intelligently select a
+    * reduced-color palette, if required.  Data is an array of "num_palette"
+    * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
+    * is non-zero.
+    */
+   png_uint_16p hist;
+#endif
+
+#ifdef PNG_cHRM_SUPPORTED
+   /* The cHRM chunk describes the CIE color characteristics of the monitor
+    * on which the PNG was created.  This data allows the viewer to do gamut
+    * mapping of the input image to ensure that the viewer sees the same
+    * colors in the image as the creator.  Values are in the range
+    * [0.0, 0.8].  Data valid if (valid & PNG_INFO_cHRM) non-zero.
+    */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+   float x_white;
+   float y_white;
+   float x_red;
+   float y_red;
+   float x_green;
+   float y_green;
+   float x_blue;
+   float y_blue;
+#endif
+#endif
+
+#ifdef PNG_pCAL_SUPPORTED
+   /* The pCAL chunk describes a transformation between the stored pixel
+    * values and original physical data values used to create the image.
+    * The integer range [0, 2^bit_depth - 1] maps to the floating-point
+    * range given by [pcal_X0, pcal_X1], and are further transformed by a
+    * (possibly non-linear) transformation function given by "pcal_type"
+    * and "pcal_params" into "pcal_units".  Please see the PNG_EQUATION_
+    * defines below, and the PNG-Group's PNG extensions document for a
+    * complete description of the transformations and how they should be
+    * implemented, and for a description of the ASCII parameter strings.
+    * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
+    */
+   png_charp pcal_purpose;  /* pCAL chunk description string */
+   png_int_32 pcal_X0;      /* minimum value */
+   png_int_32 pcal_X1;      /* maximum value */
+   png_charp pcal_units;    /* Latin-1 string giving physical units */
+   png_charpp pcal_params;  /* ASCII strings containing parameter values */
+   png_byte pcal_type;      /* equation type (see PNG_EQUATION_ below) */
+   png_byte pcal_nparams;   /* number of parameters given in pcal_params */
+#endif
+
+/* New members added in libpng-1.0.6 */
+   png_uint_32 free_me;     /* flags items libpng is responsible for freeing */
+
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
+ defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+   /* Storage for unknown chunks that the library doesn't recognize. */
+   png_unknown_chunkp unknown_chunks;
+   png_size_t unknown_chunks_num;
+#endif
+
+#ifdef PNG_iCCP_SUPPORTED
+   /* iCCP chunk data. */
+   png_charp iccp_name;     /* profile name */
+   png_charp iccp_profile;  /* International Color Consortium profile data */
+                            /* Note to maintainer: should be png_bytep */
+   png_uint_32 iccp_proflen;  /* ICC profile data length */
+   png_byte iccp_compression; /* Always zero */
+#endif
+
+#ifdef PNG_sPLT_SUPPORTED
+   /* Data on sPLT chunks (there may be more than one). */
+   png_sPLT_tp splt_palettes;
+   png_uint_32 splt_palettes_num;
+#endif
+
+#ifdef PNG_sCAL_SUPPORTED
+   /* The sCAL chunk describes the actual physical dimensions of the
+    * subject matter of the graphic.  The chunk contains a unit specification
+    * a byte value, and two ASCII strings representing floating-point
+    * values.  The values are width and height corresponsing to one pixel
+    * in the image.  This external representation is converted to double
+    * here.  Data values are valid if (valid & PNG_INFO_sCAL) is non-zero.
+    */
+   png_byte scal_unit;         /* unit of physical scale */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+   double scal_pixel_width;    /* width of one pixel */
+   double scal_pixel_height;   /* height of one pixel */
+#endif
+#ifdef PNG_FIXED_POINT_SUPPORTED
+   png_charp scal_s_width;     /* string containing height */
+   png_charp scal_s_height;    /* string containing width */
+#endif
+#endif
+
+#ifdef PNG_INFO_IMAGE_SUPPORTED
+   /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
+      non-zero */
+   /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
+   png_bytepp row_pointers;        /* the image bits */
+#endif
+
+#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED)
+   png_fixed_point int_gamma; /* gamma of image, if (valid & PNG_INFO_gAMA) */
+#endif
+
+#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED)
+   png_fixed_point int_x_white;
+   png_fixed_point int_y_white;
+   png_fixed_point int_x_red;
+   png_fixed_point int_y_red;
+   png_fixed_point int_x_green;
+   png_fixed_point int_y_green;
+   png_fixed_point int_x_blue;
+   png_fixed_point int_y_blue;
+#endif
+
+};
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * Last changed in libpng 1.4.2 [May 6, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -17,6 +17,7 @@
 * identify the replacement functions.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,6 +11,7 @@
 * and license in png.h
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
--- a/pngpriv.h
+++ b/pngpriv.h
@@ -1,7 +1,7 @@

 /* pngpriv.h - private declarations for use inside libpng
 *
- * libpng version 1.4.2 - May 6, 2010
+ * libpng version 1.5.0beta09 - February 19, 2010
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -106,7 +106,7 @@
 #define PNG_SHIFT               0x0008
 #define PNG_SWAP_BYTES          0x0010
 #define PNG_INVERT_MONO         0x0020
-#define PNG_QUANTIZE            0x0040 /* formerly PNG_DITHER */
+#define PNG_DITHER              0x0040
 #define PNG_BACKGROUND          0x0080
 #define PNG_BACKGROUND_EXPAND   0x0100
                          /*    0x0200 unused */
@@ -306,6 +306,8 @@ PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf,
 /* Decompress data in a chunk that uses compression */
 #if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \
    defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED)
+PNG_EXTERN png_size_t png_measure_decompressed_chunk PNGARG((png_structp
+    png_ptr, int comp_type, png_size_t chunklength, png_size_t prefix_length));
 PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr,
   int comp_type, png_size_t chunklength, png_size_t prefix_length,
   png_size_t *data_length));
@@ -588,9 +590,9 @@ PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row));
 PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row));
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-PNG_EXTERN void png_do_quantize PNGARG((png_row_infop row_info,
-   png_bytep row, png_bytep palette_lookup, png_bytep quantize_lookup));
+#ifdef PNG_READ_DITHER_SUPPORTED
+PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info,
+   png_bytep row, png_bytep palette_lookup, png_bytep dither_lookup));

 #  ifdef PNG_CORRECT_PALETTE_SUPPORTED
 PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr,
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -14,6 +14,7 @@
 * read a PNG file or stream.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_READ_SUPPORTED
@@ -49,7 +50,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,

 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
-   jmp_buf jmpbuf;
+   jmp_buf png_jmpbuf;
 #endif
 #endif

@@ -85,13 +86,13 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   encounter a png_error() will longjmp here.  Since the jmpbuf is
   then meaningless we abort instead of returning. */
 #ifdef USE_FAR_KEYWORD
-   if (setjmp(jmpbuf))
+   if (setjmp(png_jmpbuf))
 #else
   if (setjmp(png_jmpbuf(png_ptr))) /* Sets longjmp to match setjmp */
 #endif
      PNG_ABORT();
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(png_ptr), png_jmpbuf, png_sizeof(jmp_buf));
 #endif
 #endif /* PNG_SETJMP_SUPPORTED */

@@ -125,7 +126,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
          (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
          (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
      {
-#ifdef PNG_STDIO_SUPPORTED
+#ifdef PNG_CONSOLE_IO_SUPPORTED
         char msg[80];
         if (user_png_ver)
         {
@@ -1080,9 +1081,9 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
   png_free(png_ptr, png_ptr->big_row_buf);
   png_free(png_ptr, png_ptr->prev_row);
   png_free(png_ptr, png_ptr->chunkdata);
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
+#ifdef PNG_READ_DITHER_SUPPORTED
   png_free(png_ptr, png_ptr->palette_lookup);
-   png_free(png_ptr, png_ptr->quantize_index);
+   png_free(png_ptr, png_ptr->dither_index);
 #endif
 #ifdef PNG_READ_GAMMA_SUPPORTED
   png_free(png_ptr, png_ptr->gamma_table);
@@ -1158,7 +1159,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
    * being used again.
    */
 #ifdef PNG_SETJMP_SUPPORTED
-   png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(tmp_jmp, png_ptr->png_jmpbuf, png_sizeof(jmp_buf));
 #endif

   error_fn = png_ptr->error_fn;
@@ -1178,7 +1179,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr,
 #endif

 #ifdef PNG_SETJMP_SUPPORTED
-   png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+   png_memcpy(png_ptr->png_jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
 #endif

 }
@@ -1257,7 +1258,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
         png_set_expand(png_ptr);
 #endif

-   /* We don't handle background color or gamma transformation or quantizing.
+   /* We don't handle background color or gamma transformation or dithering.
    */

 #ifdef PNG_READ_INVERT_SUPPORTED
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@

 /* pngrio.c - functions for data input
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -18,6 +18,7 @@
 * libpng use it at run time with png_set_read_fn(...).
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_READ_SUPPORTED
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@

 /* pngrtran.c - transforms the data in a row for PNG readers
 *
- * Last changed in libpng 1.4.2 [May 6, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,6 +16,7 @@
 * in pngtrans.c.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_READ_SUPPORTED
@@ -141,13 +142,13 @@ png_set_strip_alpha(png_structp png_ptr)
 }
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* Quantize file to 8 bit.  Supply a palette, the current number
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* Dither file to 8 bit.  Supply a palette, the current number
 * of elements in the palette, the maximum number of elements
 * allowed, and a histogram if possible.  If the current number
 * of colors is greater then the maximum number, the palette will be
- * modified to fit in the maximum number.  "full_quantize" indicates
- * whether we need a quantizeing cube set up for RGB images, or if we
+ * modified to fit in the maximum number.  "full_dither" indicates
+ * whether we need a dithering cube set up for RGB images, or if we
 * simply are reducing the number of colors in a paletted image.
 */

@@ -161,24 +162,24 @@ typedef png_dsort FAR *       png_dsortp;
 typedef png_dsort FAR * FAR * png_dsortpp;

 void PNGAPI
-png_set_quantize(png_structp png_ptr, png_colorp palette,
+png_set_dither(png_structp png_ptr, png_colorp palette,
   int num_palette, int maximum_colors, png_uint_16p histogram,
-   int full_quantize)
+   int full_dither)
 {
-   png_debug(1, "in png_set_quantize");
+   png_debug(1, "in png_set_dither");

   if (png_ptr == NULL)
      return;
-   png_ptr->transformations |= PNG_QUANTIZE;
+   png_ptr->transformations |= PNG_DITHER;

-   if (!full_quantize)
+   if (!full_dither)
   {
      int i;

-      png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
+      png_ptr->dither_index = (png_bytep)png_malloc(png_ptr,
         (png_uint_32)(num_palette * png_sizeof(png_byte)));
      for (i = 0; i < num_palette; i++)
-         png_ptr->quantize_index[i] = (png_byte)i;
+         png_ptr->dither_index[i] = (png_byte)i;
   }

   if (num_palette > maximum_colors)
@@ -192,12 +193,12 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
         int i;

         /* Initialize an array to sort colors */
-         png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
+         png_ptr->dither_sort = (png_bytep)png_malloc(png_ptr,
            (png_uint_32)(num_palette * png_sizeof(png_byte)));

-         /* Initialize the quantize_sort array */
+         /* Initialize the dither_sort array */
         for (i = 0; i < num_palette; i++)
-            png_ptr->quantize_sort[i] = (png_byte)i;
+            png_ptr->dither_sort[i] = (png_byte)i;

         /* Find the least used palette entries by starting a
          * bubble sort, and running it until we have sorted
@@ -214,14 +215,14 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
            done = 1;
            for (j = 0; j < i; j++)
            {
-               if (histogram[png_ptr->quantize_sort[j]]
-                   < histogram[png_ptr->quantize_sort[j + 1]])
+               if (histogram[png_ptr->dither_sort[j]]
+                   < histogram[png_ptr->dither_sort[j + 1]])
               {
                  png_byte t;

-                  t = png_ptr->quantize_sort[j];
-                  png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1];
-                  png_ptr->quantize_sort[j + 1] = t;
+                  t = png_ptr->dither_sort[j];
+                  png_ptr->dither_sort[j] = png_ptr->dither_sort[j + 1];
+                  png_ptr->dither_sort[j + 1] = t;
                  done = 0;
               }
            }
@@ -230,7 +231,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
         }

         /* Swap the palette around, and set up a table, if necessary */
-         if (full_quantize)
+         if (full_dither)
         {
            int j = num_palette;

@@ -239,11 +240,11 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
             */
            for (i = 0; i < maximum_colors; i++)
            {
-               if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
+               if ((int)png_ptr->dither_sort[i] >= maximum_colors)
               {
                  do
                     j--;
-                  while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
+                  while ((int)png_ptr->dither_sort[j] >= maximum_colors);
                  palette[i] = palette[j];
               }
            }
@@ -258,32 +259,32 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
            for (i = 0; i < maximum_colors; i++)
            {
               /* Only move the colors we need to */
-               if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
+               if ((int)png_ptr->dither_sort[i] >= maximum_colors)
               {
                  png_color tmp_color;

                  do
                     j--;
-                  while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
+                  while ((int)png_ptr->dither_sort[j] >= maximum_colors);

                  tmp_color = palette[j];
                  palette[j] = palette[i];
                  palette[i] = tmp_color;
                  /* Indicate where the color went */
-                  png_ptr->quantize_index[j] = (png_byte)i;
-                  png_ptr->quantize_index[i] = (png_byte)j;
+                  png_ptr->dither_index[j] = (png_byte)i;
+                  png_ptr->dither_index[i] = (png_byte)j;
               }
            }

            /* Find closest color for those colors we are not using */
            for (i = 0; i < num_palette; i++)
            {
-               if ((int)png_ptr->quantize_index[i] >= maximum_colors)
+               if ((int)png_ptr->dither_index[i] >= maximum_colors)
               {
                  int min_d, k, min_k, d_index;

                  /* Find the closest color to one we threw out */
-                  d_index = png_ptr->quantize_index[i];
+                  d_index = png_ptr->dither_index[i];
                  min_d = PNG_COLOR_DIST(palette[d_index], palette[0]);
                  for (k = 1, min_k = 0; k < maximum_colors; k++)
                  {
@@ -298,12 +299,12 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
                     }
                  }
                  /* Point to closest color */
-                  png_ptr->quantize_index[i] = (png_byte)min_k;
+                  png_ptr->dither_index[i] = (png_byte)min_k;
               }
            }
         }
-         png_free(png_ptr, png_ptr->quantize_sort);
-         png_ptr->quantize_sort = NULL;
+         png_free(png_ptr, png_ptr->dither_sort);
+         png_ptr->dither_sort = NULL;
      }
      else
      {
@@ -410,19 +411,19 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
                        num_new_palette--;
                        palette[png_ptr->index_to_palette[j]]
                          = palette[num_new_palette];
-                        if (!full_quantize)
+                        if (!full_dither)
                        {
                           int k;

                           for (k = 0; k < num_palette; k++)
                           {
-                              if (png_ptr->quantize_index[k] ==
+                              if (png_ptr->dither_index[k] ==
                                 png_ptr->index_to_palette[j])
-                                 png_ptr->quantize_index[k] =
+                                 png_ptr->dither_index[k] =
                                    png_ptr->index_to_palette[next_j];
-                              if ((int)png_ptr->quantize_index[k] ==
+                              if ((int)png_ptr->dither_index[k] ==
                                 num_new_palette)
-                                 png_ptr->quantize_index[k] =
+                                 png_ptr->dither_index[k] =
                                    png_ptr->index_to_palette[j];
                           }
                        }
@@ -475,15 +476,15 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
   }
   png_ptr->num_palette = (png_uint_16)num_palette;

-   if (full_quantize)
+   if (full_dither)
   {
      int i;
      png_bytep distance;
-      int total_bits = PNG_QUANTIZE_RED_BITS + PNG_QUANTIZE_GREEN_BITS +
-         PNG_QUANTIZE_BLUE_BITS;
-      int num_red = (1 << PNG_QUANTIZE_RED_BITS);
-      int num_green = (1 << PNG_QUANTIZE_GREEN_BITS);
-      int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS);
+      int total_bits = PNG_DITHER_RED_BITS + PNG_DITHER_GREEN_BITS +
+         PNG_DITHER_BLUE_BITS;
+      int num_red = (1 << PNG_DITHER_RED_BITS);
+      int num_green = (1 << PNG_DITHER_GREEN_BITS);
+      int num_blue = (1 << PNG_DITHER_BLUE_BITS);
      png_size_t num_entries = ((png_size_t)1 << total_bits);

      png_ptr->palette_lookup = (png_bytep )png_calloc(png_ptr,
@@ -496,16 +497,16 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
      for (i = 0; i < num_palette; i++)
      {
         int ir, ig, ib;
-         int r = (palette[i].red >> (8 - PNG_QUANTIZE_RED_BITS));
-         int g = (palette[i].green >> (8 - PNG_QUANTIZE_GREEN_BITS));
-         int b = (palette[i].blue >> (8 - PNG_QUANTIZE_BLUE_BITS));
+         int r = (palette[i].red >> (8 - PNG_DITHER_RED_BITS));
+         int g = (palette[i].green >> (8 - PNG_DITHER_GREEN_BITS));
+         int b = (palette[i].blue >> (8 - PNG_DITHER_BLUE_BITS));

         for (ir = 0; ir < num_red; ir++)
         {
            /* int dr = abs(ir - r); */
            int dr = ((ir > r) ? ir - r : r - ir);
-            int index_r = (ir << (PNG_QUANTIZE_BLUE_BITS +
-                PNG_QUANTIZE_GREEN_BITS));
+            int index_r = (ir << (PNG_DITHER_BLUE_BITS +
+                PNG_DITHER_GREEN_BITS));

            for (ig = 0; ig < num_green; ig++)
            {
@@ -513,7 +514,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
               int dg = ((ig > g) ? ig - g : g - ig);
               int dt = dr + dg;
               int dm = ((dr > dg) ? dr : dg);
-               int index_g = index_r | (ig << PNG_QUANTIZE_BLUE_BITS);
+               int index_g = index_r | (ig << PNG_DITHER_BLUE_BITS);

               for (ib = 0; ib < num_blue; ib++)
               {
@@ -536,7 +537,7 @@ png_set_quantize(png_structp png_ptr, png_colorp palette,
      png_free(png_ptr, distance);
   }
 }
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
+#endif

 #if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
 /* Transform the image from the file_gamma to the screen_gamma.  We
@@ -1229,8 +1230,8 @@ png_read_transform_info(png_structp png_ptr, png_infop info_ptr)
      info_ptr->color_type &= ~PNG_COLOR_MASK_COLOR;
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-   if (png_ptr->transformations & PNG_QUANTIZE)
+#ifdef PNG_READ_DITHER_SUPPORTED
+   if (png_ptr->transformations & PNG_DITHER)
   {
      if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
          (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
@@ -1307,7 +1308,7 @@ png_do_read_transformations(png_structp png_ptr)

   if (png_ptr->row_buf == NULL)
   {
-#ifdef PNG_STDIO_SUPPORTED
+#ifdef PNG_CONSOLE_IO_SUPPORTED
      char msg[50];

      png_snprintf2(msg, 50,
@@ -1451,13 +1452,13 @@ png_do_read_transformations(png_structp png_ptr)
      png_do_chop(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-   if (png_ptr->transformations & PNG_QUANTIZE)
+#ifdef PNG_READ_DITHER_SUPPORTED
+   if (png_ptr->transformations & PNG_DITHER)
   {
-      png_do_quantize((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1,
-         png_ptr->palette_lookup, png_ptr->quantize_index);
+      png_do_dither((png_row_infop)&(png_ptr->row_info), png_ptr->row_buf + 1,
+         png_ptr->palette_lookup, png_ptr->dither_index);
      if (png_ptr->row_info.rowbytes == (png_uint_32)0)
-         png_error(png_ptr, "png_do_quantize returned rowbytes=0");
+         png_error(png_ptr, "png_do_dither returned rowbytes=0");
   }
 #endif

@@ -2348,14 +2349,14 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                  else
                  {
                     png_uint_16 red_1   = png_ptr->gamma_16_to_1[(red&0xff) >>
-                                  png_ptr->gamma_shift][red>>8];
+                         png_ptr->gamma_shift][red>>8];
                     png_uint_16 green_1 =
                         png_ptr->gamma_16_to_1[(green&0xff) >>
-                                  png_ptr->gamma_shift][green>>8];
+                         png_ptr->gamma_shift][green>>8];
                     png_uint_16 blue_1  = png_ptr->gamma_16_to_1[(blue&0xff) >>
-                                  png_ptr->gamma_shift][blue>>8];
+                         png_ptr->gamma_shift][blue>>8];
                     png_uint_16 gray16  = (png_uint_16)((rc*red_1 + gc*green_1
-                                  + bc*blue_1)>>15);
+                         + bc*blue_1)>>15);
                     w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
                         png_ptr->gamma_shift][gray16 >> 8];
                     rgb_error |= 1;
@@ -2404,7 +2405,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                  if (red != green || red != blue)
                     rgb_error |= 1;
                  *(dp++) =  png_ptr->gamma_from_1
-                             [(rc*red + gc*green + bc*blue)>>15];
+                      [(rc*red + gc*green + bc*blue)>>15];
                  *(dp++) = *(sp++);  /* alpha */
               }
            }
@@ -2453,7 +2454,7 @@ png_do_rgb_to_gray(png_structp png_ptr, png_row_infop row_info, png_bytep row)
                     png_uint_16 blue_1  = png_ptr->gamma_16_to_1[(blue&0xff) >>
                         png_ptr->gamma_shift][blue>>8];
                     png_uint_16 gray16  = (png_uint_16)((rc * red_1
-                         + gc * green_1 + bc * blue_1)>>15);
+                        + gc * green_1 + bc * blue_1)>>15);
                     w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
                         png_ptr->gamma_shift][gray16 >> 8];
                     rgb_error |= 1;
@@ -2684,7 +2685,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                        {
                           png_byte p = (png_byte)((*sp >> shift) & 0x0f);
                           png_byte g = (png_byte)((gamma_table[p |
-                             (p << 4)] >> 4) & 0x0f);
+                               (p << 4)] >> 4) & 0x0f);
                           *sp &= (png_byte)((0xf0f >> (4 - shift)) & 0xff);
                           *sp |= (png_byte)(g << shift);
                        }
@@ -2731,13 +2732,10 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     for (i = 0; i < row_width; i++, sp++)
                     {
                        if (*sp == trans_color->gray)
-                        {
                           *sp = (png_byte)background->gray;
-                        }
+
                        else
-                        {
                           *sp = gamma_table[*sp];
-                        }
                     }
                  }
                  else
@@ -2747,9 +2745,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     for (i = 0; i < row_width; i++, sp++)
                     {
                        if (*sp == trans_color->gray)
-                        {
                           *sp = (png_byte)background->gray;
-                        }
                     }
                  }
                  break;
@@ -2835,8 +2831,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
                  for (i = 0; i < row_width; i++, sp += 3)
                  {
                     if (*sp == trans_color->red &&
-                        *(sp + 1) == trans_color->green &&
-                        *(sp + 2) == trans_color->blue)
+                         *(sp + 1) == trans_color->green &&
+                         *(sp + 2) == trans_color->blue)
                     {
                        *sp = (png_byte)background->red;
                        *(sp + 1) = (png_byte)background->green;
@@ -2857,7 +2853,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     png_uint_16 g = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
                     png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));
                     if (r == trans_color->red && g == trans_color->green &&
-                        b == trans_color->blue)
+                         b == trans_color->blue)
                     {
                        /* Background is already in screen gamma */
                        *sp = (png_byte)((background->red >> 8) & 0xff);
@@ -2892,7 +2888,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     png_uint_16 b = (png_uint_16)(((*(sp+4)) << 8) + *(sp+5));

                     if (r == trans_color->red && g == trans_color->green &&
-                        b == trans_color->blue)
+                         b == trans_color->blue)
                     {
                        *sp = (png_byte)((background->red >> 8) & 0xff);
                        *(sp + 1) = (png_byte)(background->red & 0xff);
@@ -2922,9 +2918,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     png_uint_16 a = *(sp + 1);

                     if (a == 0xff)
-                     {
                        *dp = gamma_table[*sp];
-                     }
+
                     else if (a == 0)
                     {
                        /* Background is already in screen gamma */
@@ -2950,18 +2945,15 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     png_byte a = *(sp + 1);

                     if (a == 0xff)
-                     {
                        *dp = *sp;
-                     }
+
 #ifdef PNG_READ_GAMMA_SUPPORTED
                     else if (a == 0)
-                     {
                        *dp = (png_byte)background->gray;
-                     }
+
                     else
-                     {
                        png_composite(*dp, *sp, a, background_1->gray);
-                     }
+
 #else
                     *dp = (png_byte)background->gray;
 #endif
@@ -3021,9 +3013,8 @@ png_do_background(png_row_infop row_info, png_bytep row,
                  {
                     png_uint_16 a = (png_uint_16)(((*(sp+2)) << 8) + *(sp+3));
                     if (a == (png_uint_16)0xffff)
-                     {
                        png_memcpy(dp, sp, 2);
-                     }
+
 #ifdef PNG_READ_GAMMA_SUPPORTED
                     else if (a == 0)
 #else
@@ -3118,9 +3109,9 @@ png_do_background(png_row_infop row_info, png_bytep row,
                     {
                        png_composite(*dp, *sp, a, background->red);
                        png_composite(*(dp + 1), *(sp + 1), a,
-                           background->green);
+                            background->green);
                        png_composite(*(dp + 2), *(sp + 2), a,
-                           background->blue);
+                            background->blue);
                     }
                  }
               }
@@ -3170,11 +3161,13 @@ png_do_background(png_row_infop row_info, png_bytep row,
                        x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
                        *dp = (png_byte)((x >> 8) & 0xff);
                        *(dp + 1) = (png_byte)(x & 0xff);
+
                        v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
                        png_composite_16(w, v, a, background_1->green);
                        x = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >> 8];
                        *(dp + 2) = (png_byte)((x >> 8) & 0xff);
                        *(dp + 3) = (png_byte)(x & 0xff);
+
                        v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
                        png_composite_16(w, v, a, background_1->blue);
                        x = gamma_16_from_1[(w & 0xff) >> gamma_shift][w >> 8];
@@ -3237,7 +3230,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
         row_info->color_type &= ~PNG_COLOR_MASK_ALPHA;
         row_info->channels--;
         row_info->pixel_depth = (png_byte)(row_info->channels *
-            row_info->bit_depth);
+             row_info->bit_depth);
         row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
      }
   }
@@ -3294,10 +3287,12 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
                  sp += 2;
+
                  v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
                  sp += 2;
+
                  v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
@@ -3316,10 +3311,13 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
               {
                  *sp = gamma_table[*sp];
                  sp++;
+
                  *sp = gamma_table[*sp];
                  sp++;
+
                  *sp = gamma_table[*sp];
                  sp++;
+
                  sp++;
               }
            }
@@ -3332,10 +3330,12 @@ png_do_gamma(png_row_infop row_info, png_bytep row,
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
                  sp += 2;
+
                  v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
                  sp += 2;
+
                  v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
                  *sp = (png_byte)((v >> 8) & 0xff);
                  *(sp + 1) = (png_byte)(v & 0xff);
@@ -3464,8 +3464,10 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
               {
                  if ((*sp >> shift) & 0x01)
                     *dp = 1;
+
                  else
                     *dp = 0;
+
                  if (shift == 7)
                  {
                     shift = 0;
@@ -3540,8 +3542,10 @@ png_do_expand_palette(png_row_infop row_info, png_bytep row,
               {
                  if ((int)(*sp) >= num_trans)
                     *dp-- = 0xff;
+
                  else
                     *dp-- = trans_alpha[*sp];
+
                  *dp-- = palette[*sp].blue;
                  *dp-- = palette[*sp].green;
                  *dp-- = palette[*sp].red;
@@ -3611,8 +3615,10 @@ png_do_expand(png_row_infop row_info, png_bytep row,
                  {
                     if ((*sp >> shift) & 0x01)
                        *dp = 0xff;
+
                     else
                        *dp = 0;
+
                     if (shift == 7)
                     {
                        shift = 0;
@@ -3790,16 +3796,16 @@ png_do_expand(png_row_infop row_info, png_bytep row,
 }
 #endif

-#ifdef PNG_READ_QUANTIZE_SUPPORTED
+#ifdef PNG_READ_DITHER_SUPPORTED
 void /* PRIVATE */
-png_do_quantize(png_row_infop row_info, png_bytep row,
-    png_bytep palette_lookup, png_bytep quantize_lookup)
+png_do_dither(png_row_infop row_info, png_bytep row,
+    png_bytep palette_lookup, png_bytep dither_lookup)
 {
   png_bytep sp, dp;
   png_uint_32 i;
   png_uint_32 row_width=row_info->width;

-   png_debug(1, "in png_do_quantize");
+   png_debug(1, "in png_do_dither");

   {
      if (row_info->color_type == PNG_COLOR_TYPE_RGB &&
@@ -3821,14 +3827,14 @@ png_do_quantize(png_row_infop row_info, png_bytep row,
             *    (((g >> 3) & 0x1f) << 5) |
             *    ((b >> 3) & 0x1f);
             */
-            p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
-               ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
-               (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
-               (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
-               ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
-               (PNG_QUANTIZE_BLUE_BITS)) |
-               ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
-               ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+            p = (((r >> (8 - PNG_DITHER_RED_BITS)) &
+               ((1 << PNG_DITHER_RED_BITS) - 1)) <<
+               (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) |
+               (((g >> (8 - PNG_DITHER_GREEN_BITS)) &
+               ((1 << PNG_DITHER_GREEN_BITS) - 1)) <<
+               (PNG_DITHER_BLUE_BITS)) |
+               ((b >> (8 - PNG_DITHER_BLUE_BITS)) &
+               ((1 << PNG_DITHER_BLUE_BITS) - 1));

            *dp++ = palette_lookup[p];
         }
@@ -3850,14 +3856,14 @@ png_do_quantize(png_row_infop row_info, png_bytep row,
            b = *sp++;
            sp++;

-            p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
-               ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
-               (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
-               (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
-               ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
-               (PNG_QUANTIZE_BLUE_BITS)) |
-               ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
-               ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
+            p = (((r >> (8 - PNG_DITHER_RED_BITS)) &
+               ((1 << PNG_DITHER_RED_BITS) - 1)) <<
+               (PNG_DITHER_GREEN_BITS + PNG_DITHER_BLUE_BITS)) |
+               (((g >> (8 - PNG_DITHER_GREEN_BITS)) &
+               ((1 << PNG_DITHER_GREEN_BITS) - 1)) <<
+               (PNG_DITHER_BLUE_BITS)) |
+               ((b >> (8 - PNG_DITHER_BLUE_BITS)) &
+               ((1 << PNG_DITHER_BLUE_BITS) - 1));

            *dp++ = palette_lookup[p];
         }
@@ -3867,12 +3873,12 @@ png_do_quantize(png_row_infop row_info, png_bytep row,
         row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
      }
      else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
-         quantize_lookup && row_info->bit_depth == 8)
+         dither_lookup && row_info->bit_depth == 8)
      {
         sp = row;
         for (i = 0; i < row_width; i++, sp++)
         {
-            *sp = quantize_lookup[*sp];
+            *sp = dither_lookup[*sp];
         }
      }
   }
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.4.1 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -14,6 +14,7 @@
 * libpng itself during the course of reading an image.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_READ_SUPPORTED
@@ -203,7 +204,7 @@ png_crc_error(png_structp png_ptr)
    defined(PNG_READ_iCCP_SUPPORTED)
 static png_size_t
 png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
-        png_bytep output, png_size_t output_size)
+	png_bytep output, png_size_t output_size)
 {
   png_size_t count = 0;

@@ -229,11 +230,11 @@ png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
      if ((ret == Z_OK || ret == Z_STREAM_END) && avail > 0)
      {
         if (output != 0 && output_size > count)
-         {
-            int copy = output_size - count;
-            if (avail < copy) copy = avail;
-            png_memcpy(output + count, png_ptr->zbuf, copy);
-         }
+	 {
+	    int copy = output_size - count;
+	    if (avail < copy) copy = avail;
+	    png_memcpy(output + count, png_ptr->zbuf, copy);
+	 }
         count += avail;
      }

@@ -254,33 +255,31 @@ png_inflate(png_structp png_ptr, const png_byte *data, png_size_t size,
       * buffer if available.
       */
      {
-         char *msg;
-         if (png_ptr->zstream.msg != 0)
-            msg = png_ptr->zstream.msg;
-         else
-         {
-#ifdef PNG_STDIO_SUPPORTED
-            char umsg[52];
+         char *msg, umsg[52];
+	 if (png_ptr->zstream.msg != 0)
+	    msg = png_ptr->zstream.msg;
+	 else
+	 {
+#ifdef PNG_CONSOLE_IO_SUPPORTED
+	    switch (ret)
+	    {
+	 case Z_BUF_ERROR:
+	    msg = "Buffer error in compressed datastream in %s chunk";
+	    break;
+	 case Z_DATA_ERROR:
+	    msg = "Data error in compressed datastream in %s chunk";
+	    break;
+	 default:
+	    msg = "Incomplete compressed datastream in %s chunk";
+	    break;
+	    }

-            switch (ret)
-            {
-               case Z_BUF_ERROR:
-                  msg = "Buffer error in compressed datastream in %s chunk";
-                  break;
-               case Z_DATA_ERROR:
-                  msg = "Data error in compressed datastream in %s chunk";
-                  break;
-               default:
-                  msg = "Incomplete compressed datastream in %s chunk";
-                  break;
-            }
-
-            png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name);
-            msg = umsg;
+	    png_snprintf(umsg, sizeof umsg, msg, png_ptr->chunk_name);
+	    msg = umsg;
 #else
-            msg = "Damaged compressed datastream in chunk other than IDAT";
+	    msg = "Damaged compressed datastream in chunk other than IDAT";
 #endif
-         }
+	 }

         png_warning(png_ptr, msg);
      }
@@ -315,9 +314,9 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
   else if (comp_type == PNG_COMPRESSION_TYPE_BASE)
   {
      png_size_t expanded_size = png_inflate(png_ptr,
-                (png_bytep)(png_ptr->chunkdata + prefix_size),
+		(png_bytep)(png_ptr->chunkdata + prefix_size),
                chunklength - prefix_size,
-                0/*output*/, 0/*output size*/);
+		0/*output*/, 0/*output size*/);

      /* Now check the limits on this chunk - if the limit fails the
       * compressed data will be removed, the prefix will remain.
@@ -336,49 +335,44 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
       * and we have nothing to do - the code will exit through the
       * error case below.
       */
-#if defined(PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED) || \
-    defined(PNG_USER_CHUNK_MALLOC_MAX)
-      else
-#endif
-      if (expanded_size > 0)
+      else if (expanded_size > 0)
      {
         /* Success (maybe) - really uncompress the chunk. */
-         png_size_t new_size = 0;
-         png_charp text = png_malloc_warn(png_ptr,
-                        prefix_size + expanded_size + 1);
+	 png_size_t new_size = 0;
+	 png_charp text = png_malloc_warn(png_ptr,
+			prefix_size + expanded_size + 1);

         if (text != NULL)
         {
-            png_memcpy(text, png_ptr->chunkdata, prefix_size);
-            new_size = png_inflate(png_ptr,
+	    png_memcpy(text, png_ptr->chunkdata, prefix_size);
+	    new_size = png_inflate(png_ptr,
                (png_bytep)(png_ptr->chunkdata + prefix_size),
-                chunklength - prefix_size,
+		chunklength - prefix_size,
                (png_bytep)(text + prefix_size), expanded_size);
-            text[prefix_size + expanded_size] = 0; /* just in case */
+	    text[prefix_size + expanded_size] = 0; /* just in case */

-            if (new_size == expanded_size)
-            {
-               png_free(png_ptr, png_ptr->chunkdata);
-               png_ptr->chunkdata = text;
-               *newlength = prefix_size + expanded_size;
-               return; /* The success return! */
-            }
+	    if (new_size == expanded_size)
+	    {
+	       png_free(png_ptr, png_ptr->chunkdata);
+	       png_ptr->chunkdata = text;
+	       *newlength = prefix_size + expanded_size;
+	       return; /* The success return! */
+	    }
      
-            png_warning(png_ptr, "png_inflate logic error");
-            png_free(png_ptr, text);
-         }
-         else
+	    png_warning(png_ptr, "png_inflate logic error");
+	    png_free(png_ptr, text);
+	 }
+	 else
          png_warning(png_ptr, "Not enough memory to decompress chunk");
      }
   }

   else /* if (comp_type != PNG_COMPRESSION_TYPE_BASE) */
   {
-#ifdef PNG_STDIO_SUPPORTED
      char umsg[50];

-      png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d",
-          comp_type);
+#ifdef PNG_STDIO_SUPPORTED
+      png_snprintf(umsg, sizeof umsg, "Unknown zTXt compression type %d", comp_type);
      png_warning(png_ptr, umsg);
 #else
      png_warning(png_ptr, "Unknown zTXt compression type");
@@ -395,13 +389,13 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
      png_charp text = png_malloc_warn(png_ptr, prefix_size + 1);
      if (text != NULL)
      {
-         if (prefix_size > 0)
+	 if (prefix_size > 0)
            png_memcpy(text, png_ptr->chunkdata, prefix_size);
-         png_free(png_ptr, png_ptr->chunkdata);
-         png_ptr->chunkdata = text;
+	 png_free(png_ptr, png_ptr->chunkdata);
+	 png_ptr->chunkdata = text;

-         /* This is an extra zero in the 'uncompressed' part. */
-         *(png_ptr->chunkdata + prefix_size) = 0x00;
+	 /* This is an extra zero in the 'uncompressed' part. */
+	 *(png_ptr->chunkdata + prefix_size) = 0x00;
      }
      /* Ignore a malloc error here - it is safe. */
   }
@@ -897,11 +891,9 @@ png_handle_cHRM(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
               green_x, green_y, blue_x, blue_y);
 #else
            fprintf(stderr, "wx=%ld, wy=%ld, rx=%ld, ry=%ld\n",
-               (long)int_x_white, (long)int_y_white,
-               (long)int_x_red, (long)int_y_red);
+               int_x_white, int_y_white, int_x_red, int_y_red);
            fprintf(stderr, "gx=%ld, gy=%ld, bx=%ld, by=%ld\n",
-               (long)int_x_green, (long)int_y_green,
-               (long)int_x_blue, (long)int_y_blue);
+               int_x_green, int_y_green, int_x_blue, int_y_blue);
 #endif
 #endif /* PNG_CONSOLE_IO_SUPPORTED */
         }
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@

 /* pngset.c - storage of image information into info struct
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -16,6 +16,7 @@
 * info struct and allows us to change the structure in the future.
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
--- a/pngstruct.h
+++ b/pngstruct.h
@@ -0,0 +1,308 @@
+
+/* pngstruct.h - header file for PNG reference library
+ *
+ * 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.)
+ *
+ * Last changed in libpng version 1.5.0 - February 19, 2010
+ *
+ * This code is released under the libpng license.
+ * For conditions of distribution and use, see the disclaimer
+ * and license in png.h
+ */
+
+/* The structure that holds the information to read and write PNG files.
+ * The only people who need to care about what is inside of this are the
+ * people who will be modifying the library for their own special needs.
+ * It should NOT be accessed directly by an application.
+ */
+
+struct png_struct_def
+{
+#ifdef PNG_SETJMP_SUPPORTED
+   jmp_buf png_jmpbuf;            /* used in png_error */
+   png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */
+#endif
+   png_error_ptr error_fn;    /* function for printing errors and aborting */
+   png_error_ptr warning_fn;  /* function for printing warnings */
+   png_voidp error_ptr;       /* user supplied struct for error functions */
+   png_rw_ptr write_data_fn;  /* function for writing output data */
+   png_rw_ptr read_data_fn;   /* function for reading input data */
+   png_voidp io_ptr;          /* ptr to application struct for I/O functions */
+
+#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
+   png_user_transform_ptr read_user_transform_fn; /* user read transform */
+#endif
+
+#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+   png_user_transform_ptr write_user_transform_fn; /* user write transform */
+#endif
+
+/* These were added in libpng-1.0.2 */
+#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
+    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+   png_voidp user_transform_ptr; /* user supplied struct for user transform */
+   png_byte user_transform_depth;    /* bit depth of user transformed pixels */
+   png_byte user_transform_channels; /* channels in user transformed pixels */
+#endif
+#endif
+
+   png_uint_32 mode;          /* tells us where we are in the PNG file */
+   png_uint_32 flags;         /* flags indicating various things to libpng */
+   png_uint_32 transformations; /* which transformations to perform */
+
+   z_stream zstream;          /* pointer to decompression structure (below) */
+   png_bytep zbuf;            /* buffer for zlib */
+   png_size_t zbuf_size;      /* size of zbuf */
+   int zlib_level;            /* holds zlib compression level */
+   int zlib_method;           /* holds zlib compression method */
+   int zlib_window_bits;      /* holds zlib compression window bits */
+   int zlib_mem_level;        /* holds zlib compression memory level */
+   int zlib_strategy;         /* holds zlib compression strategy */
+
+   png_uint_32 width;         /* width of image in pixels */
+   png_uint_32 height;        /* height of image in pixels */
+   png_uint_32 num_rows;      /* number of rows in current pass */
+   png_uint_32 usr_width;     /* width of row at start of write */
+   png_size_t rowbytes;       /* size of row in bytes */
+   png_uint_32 iwidth;        /* width of current interlaced row in pixels */
+   png_uint_32 row_number;    /* current row in interlace pass */
+   png_bytep prev_row;        /* buffer to save previous (unfiltered) row */
+   png_bytep row_buf;         /* buffer to save current (unfiltered) row */
+   png_bytep sub_row;         /* buffer to save "sub" row when filtering */
+   png_bytep up_row;          /* buffer to save "up" row when filtering */
+   png_bytep avg_row;         /* buffer to save "avg" row when filtering */
+   png_bytep paeth_row;       /* buffer to save "Paeth" row when filtering */
+   png_row_info row_info;     /* used for transformation routines */
+
+   png_uint_32 idat_size;     /* current IDAT size for read */
+   png_uint_32 crc;           /* current chunk CRC value */
+   png_colorp palette;        /* palette from the input file */
+   png_uint_16 num_palette;   /* number of color entries in palette */
+   png_uint_16 num_trans;     /* number of transparency values */
+   png_byte chunk_name[5];    /* null-terminated name of current chunk */
+   png_byte compression;      /* file compression type (always 0) */
+   png_byte filter;           /* file filter type (always 0) */
+   png_byte interlaced;       /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
+   png_byte pass;             /* current interlace pass (0 - 6) */
+   png_byte do_filter;        /* row filter flags (see PNG_FILTER_ below ) */
+   png_byte color_type;       /* color type of file */
+   png_byte bit_depth;        /* bit depth of file */
+   png_byte usr_bit_depth;    /* bit depth of users row */
+   png_byte pixel_depth;      /* number of bits per pixel */
+   png_byte channels;         /* number of channels in file */
+   png_byte usr_channels;     /* channels at start of write */
+   png_byte sig_bytes;        /* magic bytes read/written from start of file */
+
+#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
+   png_uint_16 filler;           /* filler bytes for pixel expansion */
+#endif
+
+#ifdef PNG_bKGD_SUPPORTED
+   png_byte background_gamma_type;
+#  ifdef PNG_FLOATING_POINT_SUPPORTED
+   float background_gamma;
+#  endif
+   png_color_16 background;   /* background color in screen gamma space */
+#ifdef PNG_READ_GAMMA_SUPPORTED
+   png_color_16 background_1; /* background normalized to gamma 1.0 */
+#endif
+#endif /* PNG_bKGD_SUPPORTED */
+
+#ifdef PNG_WRITE_FLUSH_SUPPORTED
+   png_flush_ptr output_flush_fn; /* Function for flushing output */
+   png_uint_32 flush_dist;    /* how many rows apart to flush, 0 - no flush */
+   png_uint_32 flush_rows;    /* number of rows written since last flush */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+   int gamma_shift;      /* number of "insignificant" bits in 16-bit gamma */
+#ifdef PNG_FLOATING_POINT_SUPPORTED
+   float gamma;          /* file gamma value */
+   float screen_gamma;   /* screen gamma value (display_exponent) */
+#endif
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+   png_bytep gamma_table;     /* gamma table for 8-bit depth files */
+   png_bytep gamma_from_1;    /* converts from 1.0 to screen */
+   png_bytep gamma_to_1;      /* converts from file to 1.0 */
+   png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
+   png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
+   png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
+#endif
+
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
+   png_color_8 sig_bit;       /* significant bits in each available channel */
+#endif
+
+#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
+   png_color_8 shift;         /* shift for significant bit tranformation */
+#endif
+
+#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
+ || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+   png_bytep trans_alpha;           /* alpha values for paletted files */
+   png_color_16 trans_color;  /* transparent color for non-paletted files */
+#endif
+
+   png_read_status_ptr read_row_fn;   /* called after each row is decoded */
+   png_write_status_ptr write_row_fn; /* called after each row is encoded */
+#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
+   png_progressive_info_ptr info_fn; /* called after header data fully read */
+   png_progressive_row_ptr row_fn;   /* called after each prog. row is decoded */
+   png_progressive_end_ptr end_fn;   /* called after image is complete */
+   png_bytep save_buffer_ptr;        /* current location in save_buffer */
+   png_bytep save_buffer;            /* buffer for previously read data */
+   png_bytep current_buffer_ptr;     /* current location in current_buffer */
+   png_bytep current_buffer;         /* buffer for recently used data */
+   png_uint_32 push_length;          /* size of current input chunk */
+   png_uint_32 skip_length;          /* bytes to skip in input data */
+   png_size_t save_buffer_size;      /* amount of data now in save_buffer */
+   png_size_t save_buffer_max;       /* total size of save_buffer */
+   png_size_t buffer_size;           /* total amount of available input data */
+   png_size_t current_buffer_size;   /* amount of data now in current_buffer */
+   int process_mode;                 /* what push library is currently doing */
+   int cur_palette;                  /* current push library palette index */
+
+#  ifdef PNG_TEXT_SUPPORTED
+     png_size_t current_text_size;   /* current size of text input data */
+     png_size_t current_text_left;   /* how much text left to read in input */
+     png_charp current_text;         /* current text chunk buffer */
+     png_charp current_text_ptr;     /* current location in current_text */
+#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
+
+#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+
+#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
+/* For the Borland special 64K segment handler */
+   png_bytepp offset_table_ptr;
+   png_bytep offset_table;
+   png_uint_16 offset_table_number;
+   png_uint_16 offset_table_count;
+   png_uint_16 offset_table_count_free;
+#endif
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+   png_bytep palette_lookup; /* lookup table for dithering */
+   png_bytep dither_index;   /* index translation for palette files */
+#endif
+
+#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED)
+   png_uint_16p hist;                /* histogram */
+#endif
+
+#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
+   png_byte heuristic_method;        /* heuristic for row filter selection */
+   png_byte num_prev_filters;        /* number of weights for previous rows */
+   png_bytep prev_filters;           /* filter type(s) of previous row(s) */
+   png_uint_16p filter_weights;      /* weight(s) for previous line(s) */
+   png_uint_16p inv_filter_weights;  /* 1/weight(s) for previous line(s) */
+   png_uint_16p filter_costs;        /* relative filter calculation cost */
+   png_uint_16p inv_filter_costs;    /* 1/relative filter calculation cost */
+#endif
+
+#ifdef PNG_TIME_RFC1123_SUPPORTED
+   png_charp time_buffer; /* String to hold RFC 1123 time text */
+#endif
+
+/* New members added in libpng-1.0.6 */
+
+   png_uint_32 free_me;    /* flags items libpng is responsible for freeing */
+
+#ifdef PNG_USER_CHUNKS_SUPPORTED
+   png_voidp user_chunk_ptr;
+   png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
+#endif
+
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+   int num_chunk_list;
+   png_bytep chunk_list;
+#endif
+
+/* New members added in libpng-1.0.3 */
+#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+   png_byte rgb_to_gray_status;
+   /* These were changed from png_byte in libpng-1.0.6 */
+   png_uint_16 rgb_to_gray_red_coeff;
+   png_uint_16 rgb_to_gray_green_coeff;
+   png_uint_16 rgb_to_gray_blue_coeff;
+#endif
+
+/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
+#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
+    defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
+    defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
+/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+   png_uint_32 mng_features_permitted;
+#endif
+
+/* New member added in libpng-1.0.7 */
+#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
+   png_fixed_point int_gamma;
+#endif
+
+/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
+#ifdef PNG_MNG_FEATURES_SUPPORTED
+   png_byte filter_type;
+#endif
+
+/* New members added in libpng-1.2.0 */
+
+/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+#ifdef PNG_USER_MEM_SUPPORTED
+   png_voidp mem_ptr;             /* user supplied struct for mem functions */
+   png_malloc_ptr malloc_fn;      /* function for allocating memory */
+   png_free_ptr free_fn;          /* function for freeing memory */
+#endif
+
+/* New member added in libpng-1.0.13 and 1.2.0 */
+   png_bytep big_row_buf;         /* buffer to save current (unfiltered) row */
+
+#ifdef PNG_READ_DITHER_SUPPORTED
+/* The following three members were added at version 1.0.14 and 1.2.4 */
+   png_bytep dither_sort;            /* working sort array */
+   png_bytep index_to_palette;       /* where the original index currently is
+                                        in the palette */
+   png_bytep palette_to_index;       /* which original index points to this
+                                         palette color */
+#endif
+
+/* New members added in libpng-1.0.16 and 1.2.6 */
+   png_byte compression_type;
+
+#ifdef PNG_USER_LIMITS_SUPPORTED
+   png_uint_32 user_width_max;
+   png_uint_32 user_height_max;
+
+   /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
+    * chunks that can be stored (0 means unlimited).
+    */
+   png_uint_32 user_chunk_cache_max;
+
+   /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
+    * can occupy when decompressed.  0 means unlimited.
+    */
+   png_uint_32 user_chunk_malloc_max;
+#endif
+
+/* New member added in libpng-1.0.25 and 1.2.17 */
+#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+   /* Storage for unknown chunk that the library doesn't recognize. */
+   png_unknown_chunk unknown_chunk;
+#endif
+
+/* New members added in libpng-1.2.26 */
+  png_uint_32 old_big_row_buf_size;
+  png_uint_32 old_prev_row_size;
+
+/* New member added in libpng-1.2.30 */
+  png_charp chunkdata;  /* buffer for reading chunk data */
+
+#ifdef PNG_IO_STATE_SUPPORTED
+/* New member added in libpng-1.4.0 */
+   png_uint_32 io_state;
+#endif
+};
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@

 /* pngtest.c - a simple test program to test libpng
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -82,11 +82,6 @@ int test_one_file PNGARG((PNG_CONST char *inname, PNG_CONST char *outname));
 /*  #define STDERR stderr  */
 #define STDERR stdout   /* For DOS */

-/* In case a system header (e.g., on AIX) defined jmpbuf */
-#ifdef jmpbuf
-#  undef jmpbuf
-#endif
-
 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
 #ifndef png_jmpbuf
 #  define png_jmpbuf(png_ptr) png_ptr->jmpbuf
@@ -661,7 +656,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   int bit_depth, color_type;
 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
-   jmp_buf jmpbuf;
+   jmp_buf png_jmpbuf;
 #endif
 #endif

@@ -731,7 +726,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #ifdef PNG_SETJMP_SUPPORTED
   png_debug(0, "Setting jmpbuf for read struct");
 #ifdef USE_FAR_KEYWORD
-   if (setjmp(jmpbuf))
+   if (setjmp(png_jmpbuf))
 #else
   if (setjmp(png_jmpbuf(read_ptr)))
 #endif
@@ -749,13 +744,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      return (1);
   }
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(read_ptr), jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(read_ptr), png_jmpbuf, png_sizeof(jmp_buf));
 #endif

 #ifdef PNG_WRITE_SUPPORTED
   png_debug(0, "Setting jmpbuf for write struct");
 #ifdef USE_FAR_KEYWORD
-   if (setjmp(jmpbuf))
+   if (setjmp(png_jmpbuf))
 #else
   if (setjmp(png_jmpbuf(write_ptr)))
 #endif
@@ -771,7 +766,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
      return (1);
   }
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(write_ptr), jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(write_ptr), png_jmpbuf, png_sizeof(jmp_buf));
 #endif
 #endif
 #endif
@@ -1391,8 +1386,6 @@ main(int argc, char *argv[])
   /* Show the version of libpng used in building the application */
   fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
      PNG_HEADER_VERSION_STRING);
-   fprintf(STDERR, " sizeof(png_struct)=%ld, sizeof(png_info)=%ld\n",
-                    (long)png_sizeof(png_struct), (long)png_sizeof(png_info));

   /* Do some consistency checking on the memory allocation settings, I'm
    * not sure this matters, but it is nice to know, the first of these
@@ -1627,4 +1620,4 @@ main(int argc, char *argv[])
 }

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_4_2 your_png_h_is_not_version_1_4_2;
+typedef version_1_5_0beta09 your_png_h_is_not_version_1_5_0beta09;
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@

 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
 *
- * Last changed in libpng 1.4.2 [April 29, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,6 +11,7 @@
 * and license in png.h
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@@ -655,6 +656,7 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
        "This version of libpng does not support user transform info");
 #endif
 }
+#endif

 /* This function returns a pointer to the user_transform_ptr associated with
 * the user transform functions.  The application should free any memory
@@ -672,6 +674,4 @@ png_get_user_transform_ptr(png_structp png_ptr)
   return (NULL);
 #endif
 }
-#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
-	  PNG_WRITE_USER_TRANSFORM_SUPPORTED */
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@

 /* pngwio.c - functions for data output
 *
- * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -18,6 +18,7 @@
 * them at run time with png_set_write_fn(...).
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
@@ -155,7 +156,7 @@ png_default_flush(png_structp png_ptr)
 *                 arguments a pointer to a png_struct.  After a call to
 *                 the flush function, there should be no data in any buffers
 *                 or pending transmission.  If the output method doesn't do
- *                 any buffering of output, a function prototype must still be
+ *                 any buffering of ouput, a function prototype must still be
 *                 supplied although it doesn't have to do anything.  If
 *                 PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
 *                 time, output_flush_fn will be ignored, although it must be
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * Last changed in libpng 1.4.0 [January 3, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -12,6 +12,7 @@
 */

 /* Get internal access to png.h */
+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
@@ -476,7 +477,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   png_structp png_ptr;
 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
-   jmp_buf jmpbuf;
+   jmp_buf png_jmpbuf;
 #endif
 #endif
   int i;
@@ -503,12 +504,12 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   encounter a png_error() will longjmp here.  Since the jmpbuf is
   then meaningless we abort instead of returning. */
 #ifdef USE_FAR_KEYWORD
-   if (setjmp(jmpbuf))
+   if (setjmp(png_jmpbuf))
 #else
   if (setjmp(png_jmpbuf(png_ptr))) /* sets longjmp to match setjmp */
 #endif
 #ifdef USE_FAR_KEYWORD
-   png_memcpy(png_jmpbuf(png_ptr), jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(png_jmpbuf(png_ptr), png_jmpbuf, png_sizeof(jmp_buf));
 #endif
      PNG_ABORT();
 #endif
@@ -539,7 +540,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
         (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
         (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
     {
-#ifdef PNG_STDIO_SUPPORTED
+#ifdef PNG_CONSOLE_IO_SUPPORTED
        char msg[80];
        if (user_png_ver)
        {
@@ -1015,7 +1016,7 @@ png_write_destroy(png_structp png_ptr)

 #ifdef PNG_SETJMP_SUPPORTED
   /* Reset structure */
-   png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
+   png_memcpy(tmp_jmp, png_ptr->png_jmpbuf, png_sizeof(jmp_buf));
 #endif

   error_fn = png_ptr->error_fn;
@@ -1035,7 +1036,7 @@ png_write_destroy(png_structp png_ptr)
 #endif

 #ifdef PNG_SETJMP_SUPPORTED
-   png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
+   png_memcpy(png_ptr->png_jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
 #endif
 }

--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@

 /* pngwtran.c - transforms the data in a row for PNG writers
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,6 +11,7 @@
 * and license in png.h
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * Last changed in libpng 1.4.1 [February 25, 2010]
+ * Last changed in libpng 1.5.0 [February 19, 2010]
 * Copyright (c) 1998-2010 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@@ -11,6 +11,7 @@
 * and license in png.h
 */

+#define PNG_EXPOSE_INTERNAL_STRUCTURES
 #define PNG_NO_PEDANTIC_WARNINGS
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
@@ -221,7 +222,7 @@ png_text_compress(png_structp png_ptr,

   if (compression >= PNG_TEXT_COMPRESSION_LAST)
   {
-#ifdef PNG_STDIO_SUPPORTED
+#ifdef PNG_CONSOLE_IO_SUPPORTED
      char msg[50];
      png_snprintf(msg, 50, "Unknown compression type %d", compression);
      png_warning(png_ptr, msg);
@@ -1253,7 +1254,7 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
      if ((png_byte)*kp < 0x20 ||
         ((png_byte)*kp > 0x7E && (png_byte)*kp < 0xA1))
      {
-#ifdef PNG_STDIO_SUPPORTED
+#ifdef PNG_CONSOLE_IO_SUPPORTED
         char msg[40];

         png_snprintf(msg, 40,
--- a/projects/visualc6/README.txt
+++ b/projects/visualc6/README.txt
@@ -6,8 +6,6 @@ Copyright (C) 2004 Cosmin Truta.
 This code is released under the libpng license.
 For conditions of distribution and use, see copyright notice in png.h

-NOTE: This project will be removed from libpng-1.5.0.  It has
-been replaced with the "vstudio" project.

 Assumptions:
 * The libpng source files are in ..\..
@@ -35,9 +33,9 @@ To use:

 This project builds the libpng binaries as follows:

-* Win32_DLL_Release\libpng14.dll      DLL build
-* Win32_DLL_Debug\libpng14d.dll       DLL build (debug version)
-* Win32_DLL_VB\libpng14vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng15.dll      DLL build
+* Win32_DLL_Debug\libpng15d.dll       DLL build (debug version)
+* Win32_DLL_VB\libpng15vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)

--- a/projects/visualc6/libpng.dsp
+++ b/projects/visualc6/libpng.dsp
@@ -59,7 +59,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng14.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng15.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"

@@ -90,7 +90,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng14d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng15d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"

@@ -121,10 +121,10 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng14vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng15vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_VB
-TargetName=libpng14vb
+TargetName=libpng15vb
 SOURCE="$(InputPath)"
 PostBuild_Cmds=echo    Deleting $(targetname) import library and export file (Not required for VB projects)	del $(outdir)\$(targetname).lib	del $(outdir)\$(targetname).exp
 # End Special Build Tool
--- a/projects/visualc6/pngtest.dsp
+++ b/projects/visualc6/pngtest.dsp
@@ -54,7 +54,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_Release\libpng14.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_Release\libpng15.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Release
 SOURCE="$(InputPath)"
@@ -86,7 +86,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_Debug\libpng14d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_Debug\libpng15d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Debug
 SOURCE="$(InputPath)"
--- a/projects/visualc71/README.txt
+++ b/projects/visualc71/README.txt
@@ -5,9 +5,6 @@ Copyright (C) 2004 Simon-Pierre Cadieux.
 This code is released under the libpng license.
 For conditions of distribution and use, see copyright notice in png.h

-NOTE: This project will be removed from libpng-1.5.0.  It has
-been replaced with the "vstudio" project.
-
 Assumptions:
 * The libpng source files are in ..\..
 * The zlib source files are in ..\..\..\zlib
@@ -37,9 +34,9 @@ To use:

 This project builds the libpng binaries as follows:

-* Win32_DLL_Release\libpng14.dll      DLL build
-* Win32_DLL_Debug\libpng14d.dll       DLL build (debug version)
-* Win32_DLL_VB\libpng14vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng15.dll      DLL build
+* Win32_DLL_Debug\libpng15d.dll       DLL build (debug version)
+* Win32_DLL_VB\libpng15vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)

--- a/projects/visualc71/README_zlib.txt
+++ b/projects/visualc71/README_zlib.txt
@@ -10,8 +10,6 @@ Copyright (C) 2004 Cosmin Truta.
 This code is released under the libpng license.
 For conditions of distribution and use, see copyright notice in zlib.h.

-NOTE: This project will be removed from libpng-1.5.0.  It has
-been replaced with the "vstudio" project.

 To use:

--- a/projects/visualc71/libpng.vcproj
+++ b/projects/visualc71/libpng.vcproj
@@ -30,7 +30,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng14.dll"
+				OutputFile="$(OutDir)/libpng15.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngwin.def"/>
 			<Tool
@@ -78,7 +78,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng14d.dll"
+				OutputFile="$(OutDir)/libpng15d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngwin.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -126,7 +126,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng14vb.dll"
+				OutputFile="$(OutDir)/libpng15vb.dll"
 				LinkIncremental="1"/>
 			<Tool
 				Name="VCMIDLTool"/>
--- a/projects/visualc71/pngtest.vcproj
+++ b/projects/visualc71/pngtest.vcproj
@@ -130,7 +130,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCLinkerTool"
 				OutputFile="$(OutDir)/pngtest.exe"
 				LinkIncremental="1"
-				IgnoreDefaultLibraryNames="$(IntDir)\libpng14b.lib"
+				IgnoreDefaultLibraryNames="$(IntDir)\libpng15b.lib"
 				SubSystem="1"
 				TargetMachine="1"/>
 			<Tool
--- a/projects/vstudio/libpng/libpng.vcxproj
+++ b/projects/vstudio/libpng/libpng.vcxproj
@@ -1,233 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug Library|Win32">
-      <Configuration>Debug Library</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release Library|Win32">
-      <Configuration>Release Library</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Release|Win32">
-      <Configuration>Release</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <ProjectGuid>{D6973076-9317-4EF2-A0B8-B7A18AC0713E}</ProjectGuid>
-    <Keyword>Win32Proj</Keyword>
-    <RootNamespace>libpng</RootNamespace>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="$(SolutionDir)\zlib.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <CharacterSet>MultiByte</CharacterSet>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-    <CharacterSet>MultiByte</CharacterSet>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
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-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildBeforeTargets>
-    </CustomBuildBeforeTargets>
-    <TargetName>$(ProjectName)14</TargetName>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildBeforeTargets />
-    <TargetName>$(ProjectName)14</TargetName>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildBeforeTargets>
-    </CustomBuildBeforeTargets>
-    <TargetName>$(ProjectName)14</TargetName>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildBeforeTargets />
-    <TargetName>$(ProjectName)14</TargetName>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
-      <MinimalRebuild>false</MinimalRebuild>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <PreprocessorDefinitions>WIN32;PNG_BUILD_DLL;PNG_NO_MODULEDEF;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <FunctionLevelLinking>true</FunctionLevelLinking>
-      <FloatingPointExceptions>false</FloatingPointExceptions>
-      <TreatWChar_tAsBuiltInType>false</TreatWChar_tAsBuiltInType>
-      <PrecompiledHeaderFile>png.h</PrecompiledHeaderFile>
-      <BrowseInformation>true</BrowseInformation>
-      <CompileAs>CompileAsC</CompileAs>
-      <StringPooling>true</StringPooling>
-      <DisableSpecificWarnings>4996;4127</DisableSpecificWarnings>
-      <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <Optimization>Disabled</Optimization>
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-    <Link>
-      <SubSystem>Windows</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
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-      <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
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-  </ItemDefinitionGroup>
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-    <ClCompile>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
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-      <IntrinsicFunctions>true</IntrinsicFunctions>
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-      <BrowseInformation>true</BrowseInformation>
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-    </ClCompile>
-    <ClCompile Include="..\..\..\pngerror.c" />
-    <ClCompile Include="..\..\..\pngget.c" />
-    <ClCompile Include="..\..\..\pngmem.c" />
-    <ClCompile Include="..\..\..\pngpread.c" />
-    <ClCompile Include="..\..\..\pngread.c" />
-    <ClCompile Include="..\..\..\pngrio.c" />
-    <ClCompile Include="..\..\..\pngrtran.c" />
-    <ClCompile Include="..\..\..\pngrutil.c" />
-    <ClCompile Include="..\..\..\pngset.c" />
-    <ClCompile Include="..\..\..\pngtrans.c" />
-    <ClCompile Include="..\..\..\pngwio.c" />
-    <ClCompile Include="..\..\..\pngwrite.c" />
-    <ClCompile Include="..\..\..\pngwtran.c" />
-    <ClCompile Include="..\..\..\pngwutil.c" />
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-  <ItemGroup>
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-  <ImportGroup Label="ExtensionTargets">
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-</Project>
--- a/projects/vstudio/pngtest/pngtest.vcxproj
+++ b/projects/vstudio/pngtest/pngtest.vcxproj
@@ -1,217 +0,0 @@
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-    <Keyword>Win32Proj</Keyword>
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-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildAfterTargets />
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildAfterTargets />
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildAfterTargets />
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-    <CustomBuildAfterTargets />
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
-      <MinimalRebuild>false</MinimalRebuild>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <DisableSpecificWarnings>4996</DisableSpecificWarnings>
-      <CompileAsManaged>false</CompileAsManaged>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <StringPooling>true</StringPooling>
-      <FunctionLevelLinking>false</FunctionLevelLinking>
-      <BrowseInformation>true</BrowseInformation>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
-    </Link>
-    <CustomBuildStep>
-      <Message>Executing PNG test program</Message>
-      <Command>"$(OutDir)pngtest.exe" ..\..\..\pngtest.png "$(IntDir)pngout.png"</Command>
-      <Outputs>$(IntDir)pngout.png</Outputs>
-      <Inputs>..\..\..\pngtest.png;$(OutDir)pngtest.exe</Inputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
-    <ClCompile>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <WarningLevel>Level4</WarningLevel>
-      <MinimalRebuild>false</MinimalRebuild>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-      <BasicRuntimeChecks>EnableFastChecks</BasicRuntimeChecks>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(ZLibSrcDir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <DisableSpecificWarnings>4996</DisableSpecificWarnings>
-      <CompileAsManaged>false</CompileAsManaged>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <StringPooling>true</StringPooling>
-      <FunctionLevelLinking>false</FunctionLevelLinking>
-      <BrowseInformation>true</BrowseInformation>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrtd.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
-    </Link>
-    <CustomBuildStep>
-      <Message>Executing PNG test program</Message>
-      <Command>"$(OutDir)pngtest.exe" ..\..\..\pngtest.png "$(IntDir)pngout.png"</Command>
-      <Outputs>$(IntDir)pngout.png</Outputs>
-      <Inputs>..\..\..\pngtest.png;$(OutDir)pngtest.exe</Inputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <WarningLevel>Level4</WarningLevel>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Full</Optimization>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <FunctionLevelLinking>false</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <DisableSpecificWarnings>4996</DisableSpecificWarnings>
-      <CompileAsManaged>false</CompileAsManaged>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <StringPooling>true</StringPooling>
-      <MinimalRebuild>false</MinimalRebuild>
-      <BrowseInformation>true</BrowseInformation>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>libpng14.lib;msvcrt.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <AdditionalLibraryDirectories>$(OutDir)</AdditionalLibraryDirectories>
-    </Link>
-    <CustomBuildStep>
-      <Message>Executing PNG test program</Message>
-      <Command>"$(OutDir)pngtest.exe" ..\..\..\pngtest.png "$(IntDir)pngout.png"</Command>
-      <Outputs>$(IntDir)pngout.png</Outputs>
-      <Inputs>..\..\..\pngtest.png;$(OutDir)pngtest.exe</Inputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release Library|Win32'">
-    <ClCompile>
-      <WarningLevel>Level4</WarningLevel>
-      <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Full</Optimization>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <FunctionLevelLinking>false</FunctionLevelLinking>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <AdditionalIncludeDirectories>$(ZLib1Dir);..\..\..\scripts;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
-      <DisableSpecificWarnings>4996</DisableSpecificWarnings>
-      <CompileAsManaged>false</CompileAsManaged>
-      <TreatWarningAsError>true</TreatWarningAsError>
-      <StringPooling>true</StringPooling>
-      <MinimalRebuild>false</MinimalRebuild>
-      <BrowseInformation>true</BrowseInformation>
-    </ClCompile>
-    <Link>
-      <SubSystem>Console</SubSystem>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-      <AdditionalDependencies>libpng14.lib;zlib.lib;msvcrt.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-      <AdditionalLibraryDirectories>$(OutDir);$(ZLib1Dir)</AdditionalLibraryDirectories>
-    </Link>
-    <CustomBuildStep>
-      <Message>Executing PNG test program</Message>
-      <Command>$(OutDir)pngtest.exe ..\..\..\pngtest.png $(IntDir)pngout.png</Command>
-      <Command>"$(OutDir)pngtest.exe" ..\..\..\pngtest.png "$(IntDir)pngout.png"</Command>
-      <Outputs>$(IntDir)pngout.png</Outputs>
-      <Inputs>..\..\..\pngtest.png;$(OutDir)pngtest.exe</Inputs>
-    </CustomBuildStep>
-  </ItemDefinitionGroup>
-  <ItemGroup>
-    <ClCompile Include="..\..\..\pngtest.c" />
-  </ItemGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
--- a/projects/vstudio/readme.txt
+++ b/projects/vstudio/readme.txt
@@ -1,93 +0,0 @@
-
-VisualStudio instructions
-
-libpng version 1.4.2 - May 6, 2010
-
-Copyright (c) 1998-2010 Glenn Randers-Pehrson
-
-This code is released under the libpng license.
-For conditions of distribution and use, see the disclaimer
-and license in png.h
-
-This directory  contains support for building libpng under MicroSoft
-VisualStudio 2010.  It may also work under later versions of VisualStudio.
-You should be familiar with VisualStudio before using this directory.
-
-This is a slightly modified copy of the 'vstudio' solution from libpng
-1.5; it is intended to provide compatibility for libpng 1.4 with later
-releases of zlib (from 1.2.4) and to provide a migration aid for 1.5.
-
-A 'VB' DLL is no longer produced - use the standard 'Release' DLL.
-
-Initial preparations
-====================
-You should install the 'official' build of zlib on your system - follow the
-instructions provided on http://www.zlib.net.  When a new release is being
-made of zlib the instructions disappear for a while until the new official
-build is available.  You will have to wait.
-
-You must enter some information in zlib.props before attempting to build
-with this 'solution'.  Please read and edit zlib.props first.  You will
-probably not be familiar with the contents of zlib.props - do not worry,
-it is mostly harmless.
-
-Make sure that your official build layout matches the requirements listed
-in zlib.props.  Prior to zlib-1.2.4 the official build (1.2.3) placed
-include and library files in different directories - if you find this
-has happened just put them all in the same directory.
-
-This is all you need to do to build the 'release' and 'release library'
-configurations.
-
-Debugging
-=========
-The release configurations default to /Ox optimization.  Full debugging
-information is produced (in the .pdb), but if you encounter a problem the
-optimization may make it difficult to debug.  Simply rebuild with a lower
-optimization level (e.g. /Od.)
-
-Stop reading here
-=================
-You have enough information to build a working application.
-
-Debug versions have limited support
-===================================
-This solution includes limited support for debug versions of libpng.  You
-do not need these unless your own solution itself uses debug builds (it is
-far more effective to debug on the release builds, there is no point building
-a special debug build.)
-
-If, despite the previous paragraph, you still feel you need a debug build you
-will have to download the zlib source as well (http://www.zlib.net) and include
-the directory where you unpack it in zlib.props.  This solution will then be
-able to build a minimal zlib sufficient for libpng.  This build is only
-suitable for making a debug libpng.
-
-The debug build of libpng is minimally supported.  Support for debug builds of
-zlib is also minimal.  You really don't want to do this.
-
-This solution only supports the Multi-Threaded DLL C Runtime
-============================================================
-If you examine the solution you will find that it very deliberately lists
-exactly which MicroSoft DLLs it is linking against.  It explicitly links
-against msvcrt.lib.  The debug version links against msvcrtd.lib (this is
-why it is a debug version - it's nothing to do with having any special
-debug support, it doesn't).
-
-These versions of the MicroSoft C runtime correspond to the compiler flags
-/MD (release) and /MDd (debug) - the "Multi-Threaded DLL" implementation of the
-C runtime library.
-
-If you need to change this then you will have to make sure that both the
-compiler flags and the ".lib" in the linker dependences match up.  Fortunately
-neither zlib nor libpng require libraries other than a C runtime and
-kernel32.
-
-You cannot pass (FILE*) objects from a different runtime (including msvcrtd
-to msvcrt) to libpng.  If you do then your program will crash within libpng
-when it first makes a file read or write call.
-
-It is likely if you have read this far that you have found you can't avoid
-having multiple C runtimes in your program.  This is OK, it does work, but
-you will have to implement the libpng file read/write callbacks rather than
-using the internal libpng default.  This is easy.
--- a/projects/vstudio/vstudio.sln
+++ b/projects/vstudio/vstudio.sln
@@ -1,49 +0,0 @@
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual C++ Express 2010
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "libpng", "libpng\libpng.vcxproj", "{D6973076-9317-4EF2-A0B8-B7A18AC0713E}"
-	ProjectSection(ProjectDependencies) = postProject
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C} = {18040998-CC22-2BAE-FE7A-C0A3038F1D5C}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "pngtest", "pngtest\pngtest.vcxproj", "{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}"
-	ProjectSection(ProjectDependencies) = postProject
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E} = {D6973076-9317-4EF2-A0B8-B7A18AC0713E}
-	EndProjectSection
-EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "zlib", "zlib\zlib.vcxproj", "{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}"
-EndProject
-Global
-	GlobalSection(SolutionConfigurationPlatforms) = preSolution
-		Debug Library|Win32 = Debug Library|Win32
-		Debug|Win32 = Debug|Win32
-		Release Library|Win32 = Release Library|Win32
-		Release|Win32 = Release|Win32
-	EndGlobalSection
-	GlobalSection(ProjectConfigurationPlatforms) = postSolution
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Debug Library|Win32.Build.0 = Debug Library|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Debug|Win32.ActiveCfg = Debug|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Debug|Win32.Build.0 = Debug|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Release Library|Win32.ActiveCfg = Release Library|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Release Library|Win32.Build.0 = Release Library|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Release|Win32.ActiveCfg = Release|Win32
-		{D6973076-9317-4EF2-A0B8-B7A18AC0713E}.Release|Win32.Build.0 = Release|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Debug Library|Win32.Build.0 = Debug Library|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Debug|Win32.ActiveCfg = Debug|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Debug|Win32.Build.0 = Debug|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release Library|Win32.ActiveCfg = Release Library|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release Library|Win32.Build.0 = Release Library|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.ActiveCfg = Release|Win32
-		{228BA965-50D5-42B2-8BCF-AFCC227E3C1D}.Release|Win32.Build.0 = Release|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug Library|Win32.ActiveCfg = Debug Library|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug Library|Win32.Build.0 = Debug Library|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug|Win32.ActiveCfg = Debug|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Debug|Win32.Build.0 = Debug|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Release Library|Win32.ActiveCfg = Debug|Win32
-		{18040998-CC22-2BAE-FE7A-C0A3038F1D5C}.Release|Win32.ActiveCfg = Debug|Win32
-	EndGlobalSection
-	GlobalSection(SolutionProperties) = preSolution
-		HideSolutionNode = FALSE
-	EndGlobalSection
-EndGlobal
--- a/projects/vstudio/zlib.props
+++ b/projects/vstudio/zlib.props
@@ -1,43 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
- * zlib.props - location of zlib source and build
- *
- * libpng version 1.4.2 - May 6, 2010
- *
- * Copyright (c) 1998-2010 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
-
- * You must edit this file to record the location of the zlib
- * official and debug builds unless they are in the default
- * directories:
-
- *   official: zlib1
- *   debug:    zlib debug
- -->
-
-<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <PropertyGroup Label="Globals">
-    <!-- Place the name of the directory containing the official
-         build of zlib and the corresponding header files in this
-         property.  The directory is expected to contain at least:
-
-            zdll.lib  # The DLL import library
-            zlib.lib  # The static library
-            zlib.h    # The header file
-            zconf.h   # Another header file included by zlib.h
-     -->
-    <ZLib1Dir>..\..\..\..\zlib124-dll\zlib-1.2.4</ZLib1Dir>
-
-    <!-- Place the name of the directory containing the source of
-         zlib used for debugging in this property.
-         The directory need only contain the '.c' and '.h' files
-         from the source.  For your own sanity make sure that the
-         '.h' files in the source match those from the 'official'
-         build above.
-     -->
-    <ZLibSrcDir>..\..\..\..\zlib-1.2.4</ZLibSrcDir>
-  </PropertyGroup>
-</Project>
--- a/projects/vstudio/zlib/zlib.vcxproj
+++ b/projects/vstudio/zlib/zlib.vcxproj
@@ -1,112 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <ItemGroup Label="ProjectConfigurations">
-    <ProjectConfiguration Include="Debug Library|Win32">
-      <Configuration>Debug Library</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-    <ProjectConfiguration Include="Debug|Win32">
-      <Configuration>Debug</Configuration>
-      <Platform>Win32</Platform>
-    </ProjectConfiguration>
-  </ItemGroup>
-  <ItemGroup>
-    <ClCompile Include="$(ZLibSrcDir)\adler32.c" />
-    <ClCompile Include="$(ZLibSrcDir)\compress.c" />
-    <ClCompile Include="$(ZLibSrcDir)\crc32.c" />
-    <ClCompile Include="$(ZLibSrcDir)\deflate.c" />
-    <ClCompile Include="$(ZLibSrcDir)\infback.c" />
-    <ClCompile Include="$(ZLibSrcDir)\inffast.c" />
-    <ClCompile Include="$(ZLibSrcDir)\inflate.c" />
-    <ClCompile Include="$(ZLibSrcDir)\inftrees.c" />
-    <ClCompile Include="$(ZLibSrcDir)\trees.c" />
-    <ClCompile Include="$(ZLibSrcDir)\uncompr.c" />
-    <ClCompile Include="$(ZLibSrcDir)\zutil.c" />
-  </ItemGroup>
-  <PropertyGroup Label="Globals">
-    <Keyword>Win32Proj</Keyword>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
-  <Import Project="$(SolutionDir)\zlib.props" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-    <WholeProgramOptimization>true</WholeProgramOptimization>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="Configuration">
-    <ConfigurationType>StaticLibrary</ConfigurationType>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
-    <ConfigurationType>DynamicLibrary</ConfigurationType>
-  </PropertyGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
-  <ImportGroup Label="ExtensionSettings">
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'" Label="PropertySheets">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" />
-  </ImportGroup>
-  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
-  </ImportGroup>
-  <PropertyGroup Label="UserMacros" />
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <LinkIncremental>false</LinkIncremental>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
-    <LinkIncremental>true</LinkIncremental>
-  </PropertyGroup>
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <LinkIncremental>true</LinkIncremental>
-  </PropertyGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>WIN32;ZLIB_DLL;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-      <IntrinsicFunctions>true</IntrinsicFunctions>
-    </ClCompile>
-    <Link>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <SubSystem>Windows</SubSystem>
-      <Version>1</Version>
-      <AdditionalDependencies>msvcrtd.lib;kernel32.lib</AdditionalDependencies>
-      <IgnoreAllDefaultLibraries>true</IgnoreAllDefaultLibraries>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug Library|Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>WIN32;_DEBUG;_WINDOWS;_USRDLL;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary>MultiThreadedDebugDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-      <Optimization>Disabled</Optimization>
-    </ClCompile>
-    <Link>
-      <TargetMachine>MachineX86</TargetMachine>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <SubSystem>Windows</SubSystem>
-    </Link>
-  </ItemDefinitionGroup>
-  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
-    <ClCompile>
-      <PreprocessorDefinitions>WIN32;NDEBUG;_WINDOWS;_USRDLL;DEBUGZLIB_EXPORTS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
-      <RuntimeLibrary>MultiThreadedDLL</RuntimeLibrary>
-      <WarningLevel>Level3</WarningLevel>
-      <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
-    </ClCompile>
-    <Link>
-      <TargetMachine>MachineX86</TargetMachine>
-      <GenerateDebugInformation>true</GenerateDebugInformation>
-      <SubSystem>Windows</SubSystem>
-      <EnableCOMDATFolding>true</EnableCOMDATFolding>
-      <OptimizeReferences>true</OptimizeReferences>
-    </Link>
-  </ItemDefinitionGroup>
-  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
-  <ImportGroup Label="ExtensionTargets">
-  </ImportGroup>
-</Project>
--- a/projects/xcode/libpng.xcodeproj/project.pbxproj
+++ b/projects/xcode/libpng.xcodeproj/project.pbxproj
@@ -224,9 +224,9 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				COPY_PHASE_STRIP = NO;
-				DYLIB_COMPATIBILITY_VERSION = 14;
-				DYLIB_CURRENT_VERSION = 14;
-				FRAMEWORK_VERSION = 1.4.2;
+				DYLIB_COMPATIBILITY_VERSION = 15;
+				DYLIB_CURRENT_VERSION = 15;
+				FRAMEWORK_VERSION = 1.5.0beta09;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
@@ -242,9 +242,9 @@
 		4FADC24408B4156D00ABE55E /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				DYLIB_COMPATIBILITY_VERSION = 14;
-				DYLIB_CURRENT_VERSION = 14;
-				FRAMEWORK_VERSION = 1.4.2;
+				DYLIB_COMPATIBILITY_VERSION = 15;
+				DYLIB_CURRENT_VERSION = 15;
+				FRAMEWORK_VERSION = 1.5.0beta09;
 				GCC_PRECOMPILE_PREFIX_HEADER = NO;
 				GCC_PREFIX_HEADER = "";
 				INFOPLIST_FILE = Info.plist;
--- a/scripts/README.txt
+++ b/scripts/README.txt
@@ -1,8 +1,8 @@

-Makefiles for  libpng version 1.4.2 - May 6, 2010
+Makefiles for  libpng version 1.5.0beta09 - February 19, 2010

 makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng14.so.14.1.4.2)
+                       (gcc, creates libpng15.so.15.1.5.0beta09)
 makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
 makefile.knr      =>  Archaic UNIX Makefile that converts files with
                       ansi2knr (Requires ansi2knr.c from
@@ -20,7 +20,7 @@ Makefiles for  libpng version 1.4.2 - May 6, 2010
 makefile.dec      =>  DEC Alpha UNIX makefile
 makefile.dj2      =>  DJGPP 2 makefile
 makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng14.so.14.1.4.2)
+                       gcc, creates libpng15.so.15.1.5.0beta09)
 makefile.freebsd  =>  FreeBSD makefile
 makefile.gcc      =>  Generic gcc makefile
 makefile.hpgcc    =>  HPUX makefile using gcc
@@ -36,12 +36,12 @@ Makefiles for  libpng version 1.4.2 - May 6, 2010
 makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
 makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
 makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng14.so.14.1.4.2)
+                       creates libpng15.so.15.1.5.0beta09)
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
 makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng14.so.14.1.4.2)
+                       creates libpng15.so.15.1.5.0beta09)
 makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng14.so.14.1.4.2)
+                       creates libpng15.so.15.1.5.0beta09)
 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
 makefile.sunos    =>  Sun makefile
 makefile.32sunu   =>  Sun Ultra 32-bit makefile
--- a/scripts/descrip.mms
+++ b/scripts/descrip.mms
@@ -33,20 +33,20 @@ clean :


 # Other dependencies.
-png.obj : png.h, pngconf.h, pngpriv.h
-pngpread.obj : png.h, pngconf.h, pngpriv.h
-pngset.obj : png.h, pngconf.h, pngpriv.h
-pngget.obj : png.h, pngconf.h, pngpriv.h
-pngread.obj : png.h, pngconf.h, pngpriv.h
-pngrtran.obj : png.h, pngconf.h, pngpriv.h
-pngrutil.obj : png.h, pngconf.h, pngpriv.h
-pngerror.obj : png.h, pngconf.h, pngpriv.h
-pngmem.obj : png.h, pngconf.h, pngpriv.h
-pngrio.obj : png.h, pngconf.h, pngpriv.h
-pngwio.obj : png.h, pngconf.h, pngpriv.h
-pngtrans.obj : png.h, pngconf.h, pngpriv.h
-pngwrite.obj : png.h, pngconf.h, pngpriv.h
-pngwtran.obj : png.h, pngconf.h, pngpriv.h
-pngwutil.obj : png.h, pngconf.h, pngpriv.h
+png.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngpread.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngset.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngget.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngread.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngrtran.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngrutil.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngerror.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngmem.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngrio.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngwio.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngtrans.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngwrite.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngwtran.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h
+pngwutil.obj : png.h, pngconf.h, pngpriv.h pngstruct.h pnginfo.h

 pngtest.obj : png.h, pngconf.h
--- a/scripts/libpng-config-head.in
+++ b/scripts/libpng-config-head.in
@@ -11,7 +11,7 @@

 # Modeled after libxml-config.

-version=1.4.2
+version=1.5.0beta09
 prefix=""
 libdir=""
 libs=""
--- a/scripts/libpng.pc.in
+++ b/scripts/libpng.pc.in
@@ -1,10 +1,10 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=@includedir@/libpng14
+includedir=@includedir@/libpng15

 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.4.2
-Libs: -L${libdir} -lpng14
+Version: 1.5.0beta09
+Libs: -L${libdir} -lpng15
 Cflags: -I${includedir}
--- a/scripts/makefile.32sunu
+++ b/scripts/makefile.32sunu
@@ -9,8 +9,8 @@
 # and license in png.h

 # Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -29,7 +29,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra
 SUN_LD_FLAGS=-fast -xtarget=ultra

-# where make install puts libpng.a, libpng14.so and libpng14/png.h
+# where make install puts libpng.a, libpng15.so and libpng15/png.h
 prefix=/a
 exec_prefix=$(prefix)

@@ -91,7 +91,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -102,7 +102,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra\"; \
 	echo ldopts=\"-xtarget=ultra\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -218,20 +218,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.64sunu
+++ b/scripts/makefile.64sunu
@@ -9,8 +9,8 @@
 # and license in png.h

 # Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -29,7 +29,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
 SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9

-# where make install puts libpng.a, libpng14.so and libpng14/png.h
+# where make install puts libpng.a, libpng15.so and libpng15/png.h
 prefix=/a
 exec_prefix=$(prefix)

@@ -47,7 +47,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng15 -lz -lm

 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -91,7 +91,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -102,7 +102,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
 	echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -218,20 +218,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -21,8 +21,8 @@ RANLIB = ranlib
 RM_F = rm -f
 LN_SF = ln -f -s

-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 prefix=/usr/local
 INCPATH=$(prefix)/include
@@ -46,8 +46,8 @@ LDDEBUG =
 CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-W -Wall
-CFLAGS = -D_ALL_SOURCE -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng14 -lz -lm $(LDRELEASE)
+CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng15 -lz -lm $(LDRELEASE)

 # File extensions
 O=.o
@@ -95,20 +95,20 @@ install: $(LIBNAME)$(A)
 clean:
 	$(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png

-png$(O):      png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O):   png.h pngconf.h pngpriv.h
-pngmem$(O):   png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O):  png.h pngconf.h pngpriv.h
-pngrio$(O):   png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O):   png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O):   png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O):      png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread$(O):  png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest$(O):  png.h pngconf.h
--- a/scripts/makefile.bc32
+++ b/scripts/makefile.bc32
@@ -109,21 +109,21 @@ test: pngtest.exe

 ## Minor Targets

-png.obj: png.c png.h pngconf.h pngpriv.h
-pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
-pngget.obj: pngget.c png.h pngconf.h pngpriv.h
-pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
-pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
-pngread.obj: pngread.c png.h pngconf.h pngpriv.h
-pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
-pngset.obj: pngset.c png.h pngconf.h pngpriv.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
-pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
+png.obj: png.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.obj: pngget.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.obj: pngread.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.obj: pngset.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 pngtest.obj: pngtest.c png.h pngconf.h

 $(LIBNAME): $(OBJS)
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -9,8 +9,8 @@
 # and license in png.h

 # Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -45,7 +45,7 @@ CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
 LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz

-# where make install puts libpng.a, libpng14.so*, and png.h
+# where make install puts libpng.a, libpng15.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -87,13 +87,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng14 -lz \"; \
+	echo libs=\"-lpng15 -lz \"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -106,7 +106,7 @@ $(LIBSOMAJ): $(OBJSDLL)
 	$(LIBSOMAJ) $(OBJSDLL) $(LDFLAGS)

 pngtest: pngtest.o $(LIBSO)
-	$(CC) -L$(ZLIBLIB) -L. -lz -lpng14 -o pngtest pngtest.o
+	$(CC) -L$(ZLIBLIB) -L. -lz -lpng15 -o pngtest pngtest.o

 test: pngtest
 	./pngtest
@@ -193,20 +193,20 @@ clean:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.bor
+++ b/scripts/makefile.bor
@@ -117,21 +117,21 @@ test: pngtest$(MODEL).exe

 ## Minor Targets

-png.obj: png.c png.h pngconf.h pngpriv.h
-pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h
-pngget.obj: pngget.c png.h pngconf.h pngpriv.h
-pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h
-pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h
-pngread.obj: pngread.c png.h pngconf.h pngpriv.h
-pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h
-pngset.obj: pngset.c png.h pngconf.h pngpriv.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h
-pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h
+png.obj: png.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.obj: pngerror.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.obj: pngget.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.obj: pngmem.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.obj: pngpread.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.obj: pngread.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.obj: pngrio.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.obj: pngrtran.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.obj: pngrutil.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.obj: pngset.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.obj: pngtrans.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.obj: pngwio.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.obj: pngwrite.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.obj: pngwtran.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.obj: pngwutil.c png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 $(LIBNAME): $(OBJS)
 	-del $(LIBNAME)
--- a/scripts/makefile.cegcc
+++ b/scripts/makefile.cegcc
@@ -22,16 +22,16 @@
 # make clean

 VERMAJ = 1
-VERMIN = 4
-VERMIC = 2
+VERMIN = 5
+VERMIC = 0
 VER = $(VERMAJ).$(VERMIN).$(VERMIC)
 NAME = libpng
 PACKAGE = $(NAME)-$(VER)

-BIN = libpng14-0.dll
-LIB = libpng14.a libpng14.dll.a libpng.a libpng.dll.a scripts/png32ce.def
-INCLUDE = png.h pngconf.h pngpriv.h
-PC = libpng14.pc libpng.pc
+BIN = libpng15-0.dll
+LIB = libpng15.a libpng15.dll.a libpng.a libpng.dll.a scripts/png32ce.def
+INCLUDE = png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+PC = libpng15.pc libpng.pc

 MANIFESTVERBIN = "Libpng-$(VER): Binary files"
 MANIFESTVERDEV = "Libpng-$(VER): Developer files"
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -65,9 +65,9 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
        -W -Wall -O3 $(ALIGN) -funroll-loops \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5

-LIBNAME = libpng14
-PNGMAJ = 14
-CYGDLL = 14
+LIBNAME = libpng15
+PNGMAJ = 15
+CYGDLL = 15

 SHAREDLIB=cygpng$(CYGDLL).dll
 STATLIB=libpng.a
@@ -130,7 +130,7 @@ libpng.pc: scripts/libpng.pc.in
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz! > libpng.pc

 libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
@@ -243,16 +243,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng15-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng14-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng15-config --ldflags`
 	./pngtestd pngtest.png

 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng15-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng14-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng15-config --ldflags`
 	./pngtesti$(EXE) pngtest.png

 clean:
@@ -268,21 +268,21 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o:		png.h pngconf.h pngpriv.h png.c
-pngerror.o pngerror.pic.o:	png.h pngconf.h pngpriv.h pngerror.c
-pngrio.o pngrio.pic.o:		png.h pngconf.h pngpriv.h pngrio.c
-pngwio.o pngwio.pic.o:		png.h pngconf.h pngpriv.h pngwio.c
-pngmem.o pngmem.pic.o:		png.h pngconf.h pngpriv.h pngmem.c
-pngset.o pngset.pic.o:		png.h pngconf.h pngpriv.h pngset.c
-pngget.o pngget.pic.o:		png.h pngconf.h pngpriv.h pngget.c
-pngread.o pngread.pic.o:	png.h pngconf.h pngpriv.h pngread.c
-pngrtran.o pngrtran.pic.o:	png.h pngconf.h pngpriv.h pngrtran.c
-pngrutil.o pngrutil.pic.o:	png.h pngconf.h pngpriv.h pngrutil.c
-pngtrans.o pngtrans.pic.o:	png.h pngconf.h pngpriv.h pngtrans.c
-pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngpriv.h pngwrite.c
-pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngpriv.h pngwtran.c
-pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngpriv.h pngwutil.c
-pngpread.o pngpread.pic.o:	png.h pngconf.h pngpriv.h pngpread.c
+png.o png.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h png.c
+pngerror.o pngerror.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngerror.c
+pngrio.o pngrio.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrio.c
+pngwio.o pngwio.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwio.c
+pngmem.o pngmem.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngmem.c
+pngset.o pngset.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngset.c
+pngget.o pngget.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngget.c
+pngread.o pngread.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngread.c
+pngrtran.o pngrtran.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrtran.c
+pngrutil.o pngrutil.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrutil.c
+pngtrans.o pngtrans.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngtrans.c
+pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwrite.c
+pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwtran.c
+pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwutil.c
+pngpread.o pngpread.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngpread.c

 pngtest.o:			png.h pngconf.h pngtest.c
 pngtest-stat.o:			png.h pngconf.h pngtest.c
--- a/scripts/makefile.darwin
+++ b/scripts/makefile.darwin
@@ -9,7 +9,7 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h

-# where "make install" puts libpng.a, libpng14.dylib, png.h and pngconf.h
+# where "make install" puts libpng.a, libpng15.dylib, png.h and pngconf.h
 prefix=/usr/local
 exec_prefix=$(prefix)

@@ -20,8 +20,8 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).dylib
@@ -39,7 +39,7 @@ RM_F=/bin/rm -f

 # CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops
 CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz

 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -83,14 +83,14 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz\"; \
+	echo libs=\"-lpng15 -lz\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -100,7 +100,7 @@ $(LIBSO): $(LIBSOMAJ)
 $(LIBSOMAJ): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(LIBSOMAJ) \
-	 -current_version 14 -compatibility_version 14 \
+	 -current_version 15 -compatibility_version 15 \
 	 -o $(LIBSOMAJ) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz

@@ -195,20 +195,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -7,8 +7,8 @@
 # and license in png.h

 # Library name:
-PNGMAJ = 14
-LIBNAME = libpng14
+PNGMAJ = 15
+LIBNAME = libpng15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -71,7 +71,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -79,7 +79,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-std\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -179,20 +179,20 @@ clean:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.dj2
+++ b/scripts/makefile.dj2
@@ -39,20 +39,20 @@ clean:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.elf
+++ b/scripts/makefile.elf
@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng14.so on Linux ELF with gcc
+# makefile for libpng.a and libpng15.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010 Greg Roelofs
 # and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -10,19 +10,19 @@
 # Modified for Debian by Junichi Uekawa and Josselin Mouette
 # Major modifications are:
 #    * link libpng explicitly with libz and libm
-#    * $(OLDSO).14 is a symlink rather than a different library
+#    * $(OLDSO).15 is a symlink rather than a different library
 #    * versioned symbols

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOREL=$(LIBSOMAJ).$(RELEASE)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.14
+OLDSOMAJ=libpng.so.15

 # Utilities:
 AR_RC=ar rc
@@ -32,8 +32,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f

-# where "make install" puts libpng14.a, libpng14.so*,
-# libpng14/png.h and libpng14/pngconf.h
+# where "make install" puts libpng15.a, libpng15.so*,
+# libpng15/png.h and libpng15/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -57,7 +57,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-W -Wall -D_REENTRANT -O2 \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5

-LDFLAGS=-L. -lpng14
+LDFLAGS=-L. -lpng15
 LDFLAGS_A=libpng.a -lz -lm
 LIBADDFLAGS=-lz -lm

@@ -104,11 +104,11 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng.syms: png.h pngconf.h
 	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
-	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG14_%s {global:\n",PNGMAJ)}\
+	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG15_%s {global:\n",PNGMAJ)}\
 	{ for (i=1;i+2<=NF;++i)\
 		if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
 			print $$(i+1) ";";\
@@ -125,8 +125,8 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"\"; \
 	echo R_opts=\"\"; \
-	echo libs=\"-lpng14\"; \
-	echo all_libs=\"-lpng14 $(LIBADDFLAGS)\"; \
+	echo libs=\"-lpng15\"; \
+	echo all_libs=\"-lpng15 $(LIBADDFLAGS)\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -240,20 +240,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.freebsd
+++ b/scripts/makefile.freebsd
@@ -6,7 +6,7 @@
 # and license in png.h

 PREFIX?=        /usr/local
-SHLIB_VER?=     14
+SHLIB_VER?=     15

 LIB=		png
 SHLIB_MAJOR=	${SHLIB_VER}
@@ -17,7 +17,7 @@ NOOBJ=          YES
 # where make install puts libpng.a and png.h
 DESTDIR=	${PREFIX}
 LIBDIR=		/lib
-INCS=		png.h pngconf.h pngpriv.h
+INCS=		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 INCSDIR=	/include/libpng
 INCDIR=		${INCSDIR}		# for 4.x bsd.lib.mk
 MAN=		libpng.3 libpngpf.3 png.5
--- a/scripts/makefile.gcc
+++ b/scripts/makefile.gcc
@@ -64,20 +64,20 @@ pngtest$(EXE): pngtest$(O) libpng$(A)
 clean:
 	$(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png

-png$(O):      png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O):   png.h pngconf.h pngpriv.h
-pngmem$(O):   png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O):  png.h pngconf.h pngpriv.h
-pngrio$(O):   png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O):   png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O):   png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O):      png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread$(O):  png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest$(O):  png.h pngconf.h
--- a/scripts/makefile.hp64
+++ b/scripts/makefile.hp64
@@ -19,8 +19,8 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).sl
@@ -44,7 +44,7 @@ CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \

 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm

-# where make install puts libpng.a, libpng14.sl, and png.h
+# where make install puts libpng.a, libpng15.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -89,7 +89,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -97,7 +97,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -201,20 +201,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -9,8 +9,8 @@
 # and license in png.h

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).sl
@@ -54,8 +54,8 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \

 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng15 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz -lm

 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -99,13 +99,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -210,20 +210,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -19,8 +19,8 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).sl
@@ -36,7 +36,7 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f

-# where make install puts libpng.a, libpng14.sl, and png.h
+# where make install puts libpng.a, libpng15.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -86,7 +86,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -94,7 +94,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -198,20 +198,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.ibmc
+++ b/scripts/makefile.ibmc
@@ -58,20 +58,20 @@ clean:
 	$(RM) pngtest$(E)
 	$(RM) pngout.png

-png$(O):      png.h pngconf.h pngpriv.h
-pngerror$(O): png.h pngconf.h pngpriv.h
-pngget$(O):   png.h pngconf.h pngpriv.h
-pngmem$(O):   png.h pngconf.h pngpriv.h
-pngpread$(O): png.h pngconf.h pngpriv.h
-pngread$(O):  png.h pngconf.h pngpriv.h
-pngrio$(O):   png.h pngconf.h pngpriv.h
-pngrtran$(O): png.h pngconf.h pngpriv.h
-pngrutil$(O): png.h pngconf.h pngpriv.h
-pngset$(O):   png.h pngconf.h pngpriv.h
-pngtrans$(O): png.h pngconf.h pngpriv.h
-pngwio$(O):   png.h pngconf.h pngpriv.h
-pngwrite$(O): png.h pngconf.h pngpriv.h
-pngwtran$(O): png.h pngconf.h pngpriv.h
-pngwutil$(O): png.h pngconf.h pngpriv.h
+png$(O):      png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread$(O):  png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio$(O):   png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest$(O):  png.h pngconf.h
--- a/scripts/makefile.intel
+++ b/scripts/makefile.intel
@@ -44,49 +44,49 @@ pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)

 all: test

-png$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)

 libpng.lib: $(OBJS)
--- a/scripts/makefile.knr
+++ b/scripts/makefile.knr
@@ -84,20 +84,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng14.so on Linux ELF with gcc
+# makefile for libpng.a and libpng15.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
@@ -8,9 +8,9 @@
 # and license in png.h

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
-RELEASE = 2
+LIBNAME = libpng15
+PNGMAJ = 15
+RELEASE = 0

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -26,8 +26,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f

-# where "make install" puts libpng14.a, libpng14.so*,
-# libpng14/png.h and libpng14/pngconf.h
+# where "make install" puts libpng15.a, libpng15.so*,
+# libpng15/png.h and libpng15/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -51,7 +51,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5

-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng15 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm

 INCPATH=$(prefix)/include
@@ -96,7 +96,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -104,7 +104,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -216,20 +216,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.mingw
+++ b/scripts/makefile.mingw
@@ -69,9 +69,9 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
        -W -Wall -O3 $(ALIGN) -funroll-loops \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5

-LIBNAME = libpng14
-PNGMAJ = 14
-MINGDLL = 14
+LIBNAME = libpng15
+PNGMAJ = 15
+MINGDLL = 15

 SHAREDLIB=libpng$(MINGDLL).dll
 STATLIB=libpng.a
@@ -131,7 +131,7 @@ libpng.pc: scripts/libpng.pc.in
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
@@ -238,16 +238,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng15-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng14-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng15-config --ldflags`
 	./pngtestd pngtest.png

 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng14-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng15-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng14-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng15-config --ldflags`
 	./pngtesti$(EXE) pngtest.png

 clean:
@@ -263,20 +263,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o:		png.h pngconf.h pngpriv.h png.c
-pngerror.o pngerror.pic.o:	png.h pngconf.h pngpriv.h pngerror.c
-pngrio.o pngrio.pic.o:		png.h pngconf.h pngpriv.h pngrio.c
-pngwio.o pngwio.pic.o:		png.h pngconf.h pngpriv.h pngwio.c
-pngmem.o pngmem.pic.o:		png.h pngconf.h pngpriv.h pngmem.c
-pngset.o pngset.pic.o:		png.h pngconf.h pngpriv.h pngset.c
-pngget.o pngget.pic.o:		png.h pngconf.h pngpriv.h pngget.c
-pngread.o pngread.pic.o:	png.h pngconf.h pngpriv.h pngread.c
-pngrtran.o pngrtran.pic.o:	png.h pngconf.h pngpriv.h pngrtran.c
-pngrutil.o pngrutil.pic.o:	png.h pngconf.h pngpriv.h pngrutil.c
-pngtrans.o pngtrans.pic.o:	png.h pngconf.h pngpriv.h pngtrans.c
-pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngpriv.h pngwrite.c
-pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngpriv.h pngwtran.c
-pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngpriv.h pngwutil.c
-pngpread.o pngpread.pic.o:	png.h pngconf.h pngpriv.h pngpread.c
+png.o png.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h png.c
+pngerror.o pngerror.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngerror.c
+pngrio.o pngrio.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrio.c
+pngwio.o pngwio.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwio.c
+pngmem.o pngmem.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngmem.c
+pngset.o pngset.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngset.c
+pngget.o pngget.pic.o:		png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngget.c
+pngread.o pngread.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngread.c
+pngrtran.o pngrtran.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrtran.c
+pngrutil.o pngrutil.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngrutil.c
+pngtrans.o pngtrans.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngtrans.c
+pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwrite.c
+pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwtran.c
+pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngwutil.c
+pngpread.o pngpread.pic.o:	png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h pngpread.c

 pngtest.o pngtest.pic.o:	png.h pngconf.h pngtest.c
--- a/scripts/makefile.mips
+++ b/scripts/makefile.mips
@@ -68,20 +68,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.msc
+++ b/scripts/makefile.msc
@@ -27,49 +27,49 @@ OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)

 all: libpng.lib

-png$(O): png.h pngconf.h pngpriv.h
+png$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 		  $(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngset$(O): png.h pngconf.h pngpriv.h
+pngset$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngget$(O): png.h pngconf.h pngpriv.h
+pngget$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngread$(O): png.h pngconf.h pngpriv.h
+pngread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngpread$(O): png.h pngconf.h pngpriv.h
+pngpread$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 		  $(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngrtran$(O): png.h pngconf.h pngpriv.h
+pngrtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngrutil$(O): png.h pngconf.h pngpriv.h
+pngrutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngerror$(O): png.h pngconf.h pngpriv.h
+pngerror$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngmem$(O): png.h pngconf.h pngpriv.h
+pngmem$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngrio$(O): png.h pngconf.h pngpriv.h
+pngrio$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngwio$(O): png.h pngconf.h pngpriv.h
+pngwio$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngtrans$(O): png.h pngconf.h pngpriv.h
+pngtrans$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngwrite$(O): png.h pngconf.h pngpriv.h
+pngwrite$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngwtran$(O): png.h pngconf.h pngpriv.h
+pngwtran$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

-pngwutil$(O): png.h pngconf.h pngpriv.h
+pngwutil$(O): png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)

 libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
--- a/scripts/makefile.ne12bsd
+++ b/scripts/makefile.ne12bsd
@@ -13,11 +13,11 @@
 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
 MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng14
+INCSDIR=${LOCALBASE}/include/libpng15

-LIB=	png14
+LIB=	png15
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.2
+SHLIB_MINOR=	1.5.0beta09
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -8,7 +8,7 @@
 # For conditions of distribution and use, see the disclaimer
 # and license in png.h

-# You should also run makefile.ne14bsd
+# You should also run makefile.ne15bsd

 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
@@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include

 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.4.2
+SHLIB_MINOR=	1.5.0beta09
 SRCS=	png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
 	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
 	pngwtran.c pngmem.c pngerror.c pngpread.c
--- a/scripts/makefile.openbsd
+++ b/scripts/makefile.openbsd
@@ -11,7 +11,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat

 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.4.2
+SHLIB_MINOR=	1.5.0beta09

 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
--- a/scripts/makefile.os2
+++ b/scripts/makefile.os2
@@ -53,20 +53,20 @@ clean:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -10,8 +10,8 @@
 # and license in png.h

 # Library name:
-LIBNAME = libpng14
-PNGMAJ = 14
+LIBNAME = libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -38,7 +38,7 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib

 CFLAGS= -dy -belf -I$(ZLIBINC) -O3
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng15 -lz -lm

 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -82,7 +82,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -90,7 +90,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-belf\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -194,20 +194,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o png.pic.o: png.h pngconf.h pngpriv.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h
-pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h
-pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h
-pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h
+png.o png.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o pngerror.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o pngrio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o pngwio.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o pngmem.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o pngset.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o pngget.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o pngread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o pngpread.pic.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng15.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006, 2010 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 #
@@ -7,8 +7,8 @@
 # and license in png.h

 # Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -24,7 +24,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f

-# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Where make install puts libpng.a, libpng15.so, and libpng15/png.h
 # Prefix must be a full pathname.

 prefix=/usr/local
@@ -87,7 +87,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +98,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -205,20 +205,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng14.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng15.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006, 2007, 2010 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 #
@@ -7,8 +7,8 @@
 # and license in png.h

 # Library name:
-LIBNAME=libpng14
-PNGMAJ = 14
+LIBNAME=libpng15
+PNGMAJ = 15

 # Shared library names:
 LIBSO=$(LIBNAME).so
@@ -24,7 +24,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f

-# Where make install puts libpng.a, libpng14.so, and libpng14/png.h
+# Where make install puts libpng.a, libpng15.so, and libpng15/png.h
 # Prefix must be a full pathname.

 prefix=/usr/local
@@ -46,7 +46,7 @@ WARNMORE=-fullwarn
 # Note: -KPIC is the default anyhow
 #CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC # -g -DPNG_DEBUG=5
 CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE)
-LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng14 -lz -lm
+LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng15 -lz -lm
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
  -set_version sgi$(PNGMAJ).0
@@ -88,7 +88,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng14!-lpng14\ -lz\ -lm! > libpng.pc
+	-e s!-lpng15!-lpng15\ -lz\ -lm! > libpng.pc

 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +98,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng14 -lz -lm\"; \
+	echo libs=\"-lpng15 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config

@@ -206,20 +206,20 @@ writelock:

 # DO NOT DELETE THIS LINE -- make depend depends on it.

-png.o: png.h pngconf.h pngpriv.h
-pngerror.o: png.h pngconf.h pngpriv.h
-pngrio.o: png.h pngconf.h pngpriv.h
-pngwio.o: png.h pngconf.h pngpriv.h
-pngmem.o: png.h pngconf.h pngpriv.h
-pngset.o: png.h pngconf.h pngpriv.h
-pngget.o: png.h pngconf.h pngpriv.h
-pngread.o: png.h pngconf.h pngpriv.h
-pngrtran.o: png.h pngconf.h pngpriv.h
-pngrutil.o: png.h pngconf.h pngpriv.h
-pngtrans.o: png.h pngconf.h pngpriv.h
-pngwrite.o: png.h pngconf.h pngpriv.h
-pngwtran.o: png.h pngconf.h pngpriv.h
-pngwutil.o: png.h pngconf.h pngpriv.h
-pngpread.o: png.h pngconf.h pngpriv.h
+png.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngerror.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwio.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngmem.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngset.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngget.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngrutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngtrans.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwrite.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwtran.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngwutil.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h
+pngpread.o: png.h pngconf.h pngpriv.h pngstruct.h pnginfo.h

 pngtest.o: png.h pngconf.h
--- a/Show More
+++ b/Show More