Imported from libpng-1.2.26rc01.tar

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.2.20rc5 - September 2, 2007
+Libpng 1.2.26rc01 - March 26, 2008
 
 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.
@@ -9,72 +9,63 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.20rc5.tar.gz
-   libpng-1.2.20rc5.tar.bz2
+   libpng-1.2.26rc01.tar.gz
+   libpng-1.2.26rc01.tar.lzma
+     (Get the lzma codec from <http://tukaani.org/lzma>).
+   libpng-1.2.26rc01.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.20rc5-no-config.tar.gz
-   libpng-1.2.20rc5-no-config.tar.bz2
+   libpng-1.2.26rc01-no-config.tar.gz
+   libpng-1.2.26rc01-no-config.tar.lzma
+   libpng-1.2.26rc01-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1220r05.zip
-   lp1220r05.tar.bz2
+   lp1226r01.zip
+   lp1226r01.7z
+   lp1226r01.tar.bz2
 
 Project files
 
-   libpng-1.2.20rc5-project-netware.zip
-   libpng-1.2.20rc5-project-wince.zip
+   libpng-1.2.26rc01-project-netware.zip
+   libpng-1.2.26rc01-project-wince.zip
 
 Other information:
 
-   libpng-1.2.20rc5-README.txt
-   libpng-1.2.20rc5-KNOWNBUGS.txt
-   libpng-1.2.20rc5-LICENSE.txt
-   libpng-1.2.20rc5-Y2K-compliance.txt
+   libpng-1.2.26rc01-README.txt
+   libpng-1.2.26rc01-KNOWNBUGS.txt
+   libpng-1.2.26rc01-LICENSE.txt
+   libpng-1.2.26rc01-Y2K-compliance.txt
+   libpng-1.2.26rc01-[previous version]-diff.txt
 
-Changes since the last public release (1.2.19):
+Changes since the last public release (1.2.25):
 
-version 1.2.20beta01 [August 19, 2007]
-  Fixed problem with compiling pnggccrd.c on Intel-Apple platforms.
-  Added PNG_NO_ERROR_TEXT feature, with demo in contrib/pngminim
-  Removed define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */
-    because it caused some trouble.
+version 1.2.26beta01 [February 21, 2008]
+  Added missing "(" in pngmem.c.  Bug introduced in libpng-1.2.2/1.0.13
 
-version 1.2.20beta02 [August 20, 2007]
-  Avoid compiling pnggccrd.c on Intel-Apple platforms.
+version 1.2.26beta02 [March 12, 2008]
+  Refined error message returned from deflateInit2 in pngwutil.c
+  Check IHDR length in png_push_read_chunk() before saving it.
 
-version 1.2.20beta03 [August 20, 2007]
-  Added "/D PNG_NO_MMX_CODE" to the non-mmx builds of projects/visualc6
-    and visualc71.
+version 1.2.26beta03 [March 16, 2008]
+  Revised contrib/gregbook to handle premature end-of-file and file
+    read errors correctly.
 
-version 1.2.20beta04 [August 21, 2007]
-  Revised pngvcrd.c for improved efficiency (Steve Snyder).
+version 1.2.26beta04 [March 18, 2008]
+  Free png_ptr->big_row_buf and png_ptr->prev_row before allocating
+    new copies in png_read_start_row().
 
-version 1.2.20rc1 [August 23, 2007]
-  Revised pngconf.h to set PNG_NO_MMX_CODE for gcc-3.x compilers.
+version 1.2.26beta05 [March 19, 2008]
+  Removed extra png_free() added in libpng-1.2.26beta04.
 
-version 1.2.20rc2 [August 27, 2007]
-  Revised scripts/CMakeLists.txt
-  Revised #ifdefs to ensure one and only one of pnggccrd.c, pngvcrd.c,
-    or part of pngrutil.c is selected.
+version 1.2.26beta06 [March 19, 2008]
+  Avoid reallocating big_row_buf and prev_row when the size does not increase.
 
-version 1.2.20rc3 [September 2, 2007]
-  Remove a little more code in pngwutil.c when PNG_NO_WRITE_FILTER is selected.
-  Added /D _CRT_SECURE_NO_WARNINGS to visual6c and visualc71 projects.
-  Compile png_mmx_support() in png.c even when PNG_NO_MMX_CODE is defined.
-  Restored a "superfluous" #ifdef that was removed from 1.2.20rc2 pnggccrd.c,
-    breaking the png_mmx_support() function.
-
-version 1.2.20rc4 [September 1, 2007]
-  Removed Intel contributions (MMX, Optimized C).
-
-version 1.2.20rc5 [September 2, 2007]
-  Restored configure and Makefile.in to rc3 and put a snippet of code in
-    pnggccrd.c, to ensure configure makes the same PNG_NO_MMX_CODE selection
+version 1.2.26rc01 [March 26, 2008]
+  Ifdef out some code that is unused when interlacing is not supported.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 

CHANGES

@@ -1480,7 +1480,7 @@ version 1.2.9beta5 [March 4, 2006]
   Restored scripts/makefile.elf which was inadvertently deleted.
 
 version 1.2.9beta6 [March 6, 2006]
-  Fixed typo (20) in configuration files.
+  Fixed typo (RELEASE) in configuration files.
 
 version 1.2.9beta7 [March 7, 2006]
   Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
@@ -1669,7 +1669,7 @@ version 1.2.15rc2 [December 21, 2006]
   Added scripts/makefile.nommx
 
 version 1.2.15rc3 [December 25, 2006]
-  Fixed shared library numbering error that was intruduced in 1.2.15beta6.
+  Fixed shared library numbering error that was introduced in 1.2.15beta6.
 
 version 1.2.15rc4 [December 27, 2006]
   Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
@@ -1677,7 +1677,7 @@ version 1.2.15rc4 [December 27, 2006]
 version 1.2.15rc5 [December 31, 2006]
   Revised handling of rgb_to_gray.
 
-version 1.2.15 [January 5, 2007]
+version 1.0.23, 1.2.15 [January 5, 2007]
   Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
 
 version 1.2.16beta1 [January 6, 2007]
@@ -1686,7 +1686,7 @@ version 1.2.16beta1 [January 6, 2007]
 version 1.2.16beta2 [January 16, 2007]
   Revised scripts/CMakeLists.txt
  
-version 1.2.16 [January 31, 2007]
+version 1.0.24, 1.2.16 [January 31, 2007]
   No changes.
  
 version 1.2.17beta1 [March 6, 2007]
@@ -1897,6 +1897,7 @@ version 1.0.27 and 1.2.19 [August 18, 2007]
 
 version 1.2.20beta01 [August 19, 2007]
   Fixed problem with compiling pnggccrd.c on Intel-Apple platforms.
+  Changed png_malloc() to png_malloc_warn() in png_set_sPLT().
   Added PNG_NO_ERROR_TEXT feature, with demo in contrib/pngminim
   Removed define PNG_WARN_UNINITIALIZED_ROW 1 /* 0: warning; 1: error */
     because it caused some trouble.
@@ -1933,6 +1934,172 @@ version 1.2.20rc5 [September 2, 2007]
   Restored configure and Makefile.in to rc3 and put a snippet of code in
     pnggccrd.c, to ensure configure makes the same PNG_NO_MMX_CODE selection
 
+version 1.2.20rc6 [September 2, 2007]
+  Fixed bugs in scripts/CMakeLists.txt
+  Removed pngvcrd.c references from msvc projects.
+
+version 1.0.28 and 1.2.20 [September 8, 2007]
+  Removed "(NO READ SUPPORT)" from png_get_header_version() string.
+
+version 1.2.21beta1 [September 14, 2007]
+  Fixed various mistakes reported by George Cook and Jeff Phillips:
+  logical vs bitwise NOT in pngrtran.c, bug introduced in 1.2.19rc2
+  16-bit cheap transparency expansion, bug introduced in 1.2.19beta2
+  errors with sizeof(unknown_chunk.name), bugs introduced in 1.2.19beta11
+  <= compare with unsigned var in pngset.c, should be ==.
+
+version 1.2.21beta2 [September 18, 2007]
+  Removed some extraneous typecasts.
+
+version 1.2.21rc1 [September 25, 2007]
+  Fixed potential out-of-bounds reads in png_handle_pCAL() and
+    png_handle_ztXt() ("flayer" results reported by Tavis Ormandy).
+
+version 1.2.21rc2 [September 26, 2007]
+  Fixed potential out-of-bounds reads in png_handle_sCAL(),
+    png_handle_iTXt(), and png_push_read_tEXt().
+  Remove some PNG_CONST declarations from pngwutil.c to avoid compiler warnings
+  Revised makefiles to update paths in libpng.pc properly.
+
+version 1.2.21rc3 [September 27, 2007]
+  Revised makefiles to update "Libs" in libpng.pc properly.
+
+version 1.0.29 and 1.2.21rc3 [October 4, 2007]
+  No changes.
+
+version 1.2.22beta1 [October 4, 2007]
+  Again, fixed logical vs bitwise NOT in pngrtran.c, bug introduced
+    in 1.2.19rc2
+
+version 1.2.22beta2 [October 5, 2007]
+  Fixed string length error in pngset.c (caused crashes while decoding iCCP)
+  Add terminating NULL after each instance of png_strncpy().
+
+version 1.2.22beta3 [October 6, 2007]
+  Fix two off-by-one terminating NULL after png_strncpy().
+
+version 1.2.22beta4 [October 7, 2007]
+  Changed some 0 to '\0'.
+
+version 1.0.30rc1 and 1.2.22rc1 [October 8, 2007]
+  No changes.
+
+version 1.0.30 and 1.2.22 [October 13, 2007]
+  No changes.
+
+version 1.2.23beta01 [October 15, 2007]
+  Reduced number of invocations of png_strlen() in pngset.c.
+  Changed [azAZ09_] to [_abcde...89] in Makefile.am for better localization.
+
+version 1.2.23beta02 [October 16, 2007]
+  Eliminated png_strncpy() and png_strcpy() (Pierre Poissinger)
+  Changed $AN to $(AN) in Makefile.am.
+
+version 1.2.23beta03 [October 16, 2007]
+  Fixed off-by-one error in pngset.c
+  Restore statement to set last character of buffer to \0 in pngerror.c
+
+version 1.2.23beta04 [October 23, 2007]
+  Reject attempt to set all-zero cHRM values.
+
+version 1.2.23beta05 [October 26, 2007]
+  Add missing quotes in projects/visualc6, lost in version 1.2.20rc3
+
+version 1.2.23rc01 [November 2, 2007]
+  No changes.
+
+version 1.2.23 [November 6, 2007]
+  No changes.
+
+version 1.2.24beta01 [November 19, 2007]
+  Moved misplaced test for malloc failure in png_set_sPLT().  This bug was
+    introduced in libpng-1.2.20beta01.
+  Ifdef out avg_row etc from png.h and pngwrite.c when PNG_NO_WRITE_FILTER
+  Do not use png_ptr->free_fn and png_ptr->mem_fn in png_destroy_read_struct()
+    when png_ptr is NULL (Marshall Clow).
+  Updated handling of symbol prefixes in Makefile.am and configure.ac (Mike
+    Frysinger).
+
+version 1.2.24beta02 [November 30, 2007]
+  Removed a useless test and fixed incorrect test in png_set_cHRM_fixed()
+    (David Hill).
+
+version 1.2.24rc01 [December 7, 2007]
+  No changes.
+
+version 1.2.24     [December 14, 2007]
+  Make sure not to redefine _BSD_SOURCE in pngconf.h
+  Revised gather.sh and makefile.std in contrib/pngminim to avoid compiling
+    unused files.
+
+version 1.2.25beta01 [January 7, 2008]
+  Fixed bug with unknown chunk handling, introduced in version 1.2.17rc2
+
+version 1.2.25beta02 [January 10, 2008]
+  Prevent gamma from being applied twice.
+
+version 1.2.25rc01 [January 17, 2008]
+  No changes.
+
+version 1.2.25beta03 [January 22, 2008]
+  Fixed some continue-after-malloc-failure errors in pngset.c (David Hill)
+  Check for info_ptr == NULL in png_read_info() and png_process_data().
+  Check for possible use of NULL user_png_ver[] in png_create_read_struct().
+  Change "if (swidth == NULL)" to "if (sheight == NULL)" in png_handle_sCAL
+    (bug introduced in libpng-1.2.4/1.0.13).
+  Return from png_destroy_read_struct() if png_ptr_ptr is NULL.
+  Fix overflow of "msg" in png_decompress_chunk().
+
+version 1.2.25beta04 [January 26, 2008]
+  Work around Coverity bug report by slightly refactoring
+    png_read_push_finish_row()
+
+version 1.2.25beta05 [January 31, 2008]
+  Added libpng-1.2.25beta05.tar.lzma to distribution.  Get the lzma codec
+    from <http://tukaani.org/lzma>.
+  Added lp1225b05.7z to distribution.  Get the 7-zip decoder from
+    from <http://www.7-zip.org>.
+  Fixed some broken links in the README file.
+
+version 1.2.25beta06 [February 6, 2008]
+  Refactored png_read_push_finish_row() again, trying to satisfy Coverity.
+  Fixed potential NULL dereference of png_ptr in png_destroy_write_struct();
+  clarified potential NULL dereference of png_ptr in png_destroy_read_struct();
+  fixed potential NULL dereference of info_ptr in png_handle_bKGD();
+  fixed potential NULL dereference of user_png_ver[] in
+    png_create_write_struct_2(). (Coverity)
+
+version 1.2.25rc02 [February 10, 2008]
+  Reset png_ptr->pass in png_read_push_finish_row() before break.
+  Changed "pass" from png_byte to int.
+
+version 1.2.25 and 1.0.31 [February 18, 2008]
+  No changes.
+
+version 1.2.26beta01 [February 21, 2008]
+  Added missing "(" in pngmem.c.  Bug introduced in libpng-1.2.2/1.0.13
+
+version 1.2.26beta02 [March 12, 2008]
+  Refined error message returned from deflateInit2 in pngwutil.c
+  Check IHDR length in png_push_read_chunk() before saving it.
+
+version 1.2.26beta03 [March 16, 2008]
+  Revised contrib/gregbook to handle premature end-of-file and file
+    read errors correctly.
+
+version 1.2.26beta04 [March 18, 2008]
+  Free png_ptr->big_row_buf and png_ptr->prev_row before allocating
+    new copies in png_read_start_row().  Bug introduced in libpng-1.2.22.
+
+version 1.2.26beta05 [March 19, 2008]
+  Removed extra png_free() added in libpng-1.2.26beta04.
+
+version 1.2.26beta06 [March 19, 2008]
+  Avoid reallocating big_row_buf and prev_row when the size does not increase.
+
+version 1.2.26rc01 [March 26, 2008]
+  Ifdef out some code that is unused when interlacing is not supported.
+
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.20rc5 - September 2, 2007
+Installing libpng version 1.2.26rc01 - March 26, 2008
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@ 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-1.2.20rc5" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.26rc01" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,9 +101,9 @@ include
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.20rc5)
+                       gcc, creates libpng12.so.0.1.2.26rc01)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.20rc5)
+                       (gcc, creates libpng12.so.0.1.2.26rc01)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -125,14 +125,14 @@ include
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.20rc5)
+                       creates libpng12.so.0.1.2.26rc01)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.20rc5)
+                       creates libpng12.so.0.1.2.26rc01)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.20rc5)
+                       creates libpng12.so.0.1.2.26rc01)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.20rc5)
+                       creates libpng12.so.0.1.2.26rc01)
  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

KNOWNBUG

@@ -1,12 +1,22 @@
 
-Known bugs in libpng version 1.2.20rc5
+Known bugs in libpng version 1.2.26rc01
 
 1. February 23, 2006: The custom makefiles don't build libpng with -lz.
 
    STATUS: This is a subject of debate. The change will probably be made
-   as a part of a major overhaul of the makefiles in libpng version 1.3.0.
+   as a part of a major overhaul of the makefiles in libpng version 1.4.0.
 
 2. February 24, 2006: The Makefile generated by the "configure" script
    fails to install symbolic links
    libpng12.so => libpng12.so.0.1.2.9betaN
    that are generated by the custom makefiles.
+
+3. September 4, 2007:  There is a report that pngtest crashes on MacOS 10.
+
+   STATUS: workarounds are
+      1) Compile without optimization (crashes are observed with
+         -arch i386 and -O2 or -O3, using gcc-4.0.1).
+      2) Compile pngtest.c with PNG_DEBUG defined (the bug goes away if
+         you try to look at it).
+      3) Ignore the crash.  The library itself seems to be OK.
+

LICENSE

@@ -8,8 +8,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.20rc5, September 2, 2007, are
-Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.2.26rc01, March 26, 2008, are
+Copyright (c) 2004, 2006-2008 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
 
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-September 2, 2007
+March 26, 2008

Makefile.am

@@ -58,6 +58,9 @@ else
 endif
 libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
 
+# Avoid depending upon Character Ranges.
+AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+
 #distribute headers in /usr/include/libpng/*
 pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
 pkginclude_HEADERS= png.h pngconf.h
@@ -97,8 +100,9 @@ $(PNGLIB_BASENAME)-config: libpng-config
 libpng.sym: png.h pngconf.h
 	rm -f $@ $@.new
 	$(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
-		$(SED) -n -e 's|^.*PNG_FUNCTION_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
-			-e 's|^.*PNG_DATA_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+		$(SED) -n -e \
+		's|^.*PNG_FUNCTION_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
+		-e 's|^.*PNG_DATA_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
 			>$@.new
 	mv $@.new $@
 

Makefile.in

@@ -142,6 +142,9 @@ GZIP_ENV = --best
 distuninstallcheck_listfiles = find . -type f -print
 distcleancheck_listfiles = find . -type f -print
 
+# Avoid depending upon Character Ranges.
+AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+
 #distribute headers in /usr/include/libpng/*
 pkgincludedir = $(includedir)/$(PNGLIB_BASENAME)
 ACLOCAL = @ACLOCAL@
@@ -203,6 +206,7 @@ PATH_SEPARATOR = @PATH_SEPARATOR@
 PNGLIB_MAJOR = @PNGLIB_MAJOR@
 PNGLIB_MINOR = @PNGLIB_MINOR@
 PNGLIB_RELEASE = @PNGLIB_RELEASE@
+SYMBOL_PREFIX = @SYMBOL_PREFIX@
 PNGLIB_VERSION = @PNGLIB_VERSION@
 POW_LIB = @POW_LIB@
 RANLIB = @RANLIB@
@@ -1230,8 +1234,9 @@ $(PNGLIB_BASENAME)-config: libpng-config
 libpng.sym: png.h pngconf.h
 	rm -f $@ $@.new
 	$(CPP) @LIBPNG_DEFINES@ $(CPPFLAGS) -DPNG_BUILDSYMS $(srcdir)/png.h | \
-		$(SED) -n -e 's|^.*PNG_FUNCTION_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
-			-e 's|^.*PNG_DATA_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+		$(SED) -n -e \
+		's|^.*PNG_FUNCTION_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
+		-e 's|^.*PNG_DATA_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
 			>$@.new
 	mv $@.new $@
 

README

@@ -1,11 +1,12 @@
-README for libpng version 1.2.20rc5 - September 2, 2007 (shared library 12.0)
+README for libpng version 1.2.26rc01 - March 26, 2008 (shared library 12.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
 
-Libpng comes in several distribution formats.  Get libpng-*.tar.gz
-or libpng-*.tar.bz2 if you want UNIX-style line endings in the text
-files, or lpng*.zip if you want DOS-style line endings.
+Libpng comes in several distribution formats.  Get libpng-*.tar.gz,
+libpng-*.tar.lzma, or libpng-*.tar.bz2 if you want UNIX-style line
+endings in the text files, or lpng*.7z lpng*.zip if you want DOS-style
+line endings.
 
 Version 0.89 was the first official release of libpng.  Don't let the
 fact that it's the first release fool you.  The libpng library has been in
@@ -77,12 +78,12 @@ compression library that is useful for more things than just PNG files.
 You can use zlib as a drop-in replacement for fread() and fwrite() if
 you are so inclined.
 
-zlib should be available at the same place that libpng is, or at.
-ftp://ftp.info-zip.org/pub/infozip/zlib
+zlib should be available at the same place that libpng is, or at
+ftp://ftp.simplesystems.org/pub/png/src/
 
 You may also want a copy of the PNG specification.  It is available
 as an RFC, a W3C Recommendation, and an ISO/IEC Standard.  You can find
-these at http://www.libpng.org/pub/png/documents/
+these at http://www.libpng.org/pub/png/pngdocs.html
 
 This code is currently being archived at libpng.sf.net in the
 [DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
@@ -113,8 +114,8 @@ given in previous versions of this document.  He and Andreas will read mail
 addressed to the png-implement list, however.
 
 Please do not send general questions about PNG.  Send them to
-the (png-list at ccrc.wustl.edu, subscription required, write to
-majordomo at ccrc.wustl.edu with "subscribe png-list" in your message).
+the (png-mng-misc at lists.sourceforge.net, subscription required, visit
+https://lists.sourceforge.net/lists/listinfo/png-mng-implement to subscribe)
 On the other hand,
 please do not send libpng questions to that address, send them to me
 or to the png-implement list.  I'll
@@ -125,7 +126,7 @@ and ...".  If in doubt, send questions to me.  I'll bounce them
 to others, if necessary.
 
 Please do not send suggestions on how to change PNG.  We have
-been discussing PNG for nine years now, and it is official and
+been discussing PNG for twelve years now, and it is official and
 finished.  If you have suggestions for libpng, however, I'll
 gladly listen.  Even if your suggestion is not used immediately,
 it may be used later.
@@ -140,6 +141,7 @@ Files in this distribution:
       TODO          =>  Things not implemented in the current library
       Y2KINFO       =>  Statement of Y2K compliance
       example.c     =>  Example code for using libpng functions
+      libpng-*-*-diff.txt => Diff from previous release
       libpng.3      =>  manual page for libpng (includes libpng.txt)
       libpng.txt    =>  Description of libpng and its functions
       libpngpf.3    =>  manual page for libpng's private functions
@@ -147,7 +149,6 @@ Files in this distribution:
       png.c         =>  Basic interface functions common to library
       png.h         =>  Library function and interface declarations
       pngconf.h     =>  System specific library configuration
-      pngasmrd.h    =>  Header file for assembler-coded functions
       pngerror.c    =>  Error/warning message I/O functions
       pngget.c      =>  Functions for retrieving info from struct
       pngmem.c      =>  Memory handling functions
@@ -190,11 +191,11 @@ Files in this distribution:
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.20rc5)
+                            gcc, creates libpng12.so.0.1.2.26rc01)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.20rc5)
+                            (gcc, creates libpng12.so.0.1.2.26rc01)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.20rc5,
+                            (gcc, creates libpng12.so.0.1.2.26rc01,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -216,12 +217,12 @@ Files in this distribution:
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.20rc5)
+                            (gcc, creates libpng12.so.0.1.2.26rc01)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.20rc5)
+                            (gcc, creates libpng12.so.0.1.2.26rc01)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.20rc5)
+                            (gcc, creates libpng12.so.0.1.2.26rc01)
        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
@@ -256,7 +257,7 @@ Good luck, and happy coding.
 
 -Andreas Eric Dilger (former maintainer, 1996-1997)
  Internet: adilger at enel.ucalgary.ca
- Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
+ Web: http://members.shaw.ca/adilger/
 
 -Guy Eric Schalnat (original author and former maintainer, 1995-1996)
  (formerly of Group 42, Inc)

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      September 2, 2007
+      March 26, 2008
 
       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 1.2.20rc5 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.26rc01 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

configure

@@ -1,6 +1,6 @@
 #! /bin/sh
 # Guess values for system-dependent variables and create Makefiles.
-# Generated by GNU Autoconf 2.61 for libpng 1.2.20rc5.
+# Generated by GNU Autoconf 2.61 for libpng 1.2.26rc01.
 #
 # Report bugs to <png-mng-implement@lists.sourceforge.net>.
 #
@@ -728,8 +728,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
 # Identity of this package.
 PACKAGE_NAME='libpng'
 PACKAGE_TARNAME='libpng'
-PACKAGE_VERSION='1.2.20rc5'
-PACKAGE_STRING='libpng 1.2.20rc5'
+PACKAGE_VERSION='1.2.26rc01'
+PACKAGE_STRING='libpng 1.2.26rc01'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -879,6 +879,7 @@ LIBPNG_DEFINES
 LIBPNG_NO_MMX
 HAVE_LD_VERSION_SCRIPT_TRUE
 HAVE_LD_VERSION_SCRIPT_FALSE
+SYMBOL_PREFIX
 PNGLIB_VERSION
 PNGLIB_MAJOR
 PNGLIB_MINOR
@@ -1405,7 +1406,7 @@ 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 1.2.20rc5 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.26rc01 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1475,7 +1476,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.2.20rc5:";;
+     short | recursive ) echo "Configuration of libpng 1.2.26rc01:";;
    esac
   cat <<\_ACEOF
 
@@ -1585,7 +1586,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.2.20rc5
+libpng configure 1.2.26rc01
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1599,7 +1600,7 @@ 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 1.2.20rc5, which was
+It was created by libpng $as_me 1.2.26rc01, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2269,7 +2270,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.2.20rc5'
+ VERSION='1.2.26rc01'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2440,10 +2441,10 @@ fi
 
 
 
-PNGLIB_VERSION=1.2.20rc5
+PNGLIB_VERSION=1.2.26rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
-PNGLIB_RELEASE=20
+PNGLIB_RELEASE=26
 
 
 
@@ -20789,6 +20790,18 @@ else
 fi
 
 
+if test "$have_ld_version_script" = "yes"; then
+    { echo "$as_me:$LINENO: checking for symbol prefix" >&5
+echo $ECHO_N "checking for symbol prefix... $ECHO_C" >&6; }
+    SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
+                   | ${CPP-${CC-gcc} -E} - 2>&1 \
+                   | ${EGREP-grep} "^PREFIX=" \
+                   | ${SED-sed} "s:^PREFIX=::"`
+
+    { echo "$as_me:$LINENO: result: $SYMBOL_PREFIX" >&5
+echo "${ECHO_T}$SYMBOL_PREFIX" >&6; }
+fi
+
 # Substitutions for .in files
 
 
@@ -21282,7 +21295,7 @@ exec 6>&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 1.2.20rc5, which was
+This file was extended by libpng $as_me 1.2.26rc01, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -21335,7 +21348,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.2.20rc5
+libpng config.status 1.2.26rc01
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
@@ -21666,6 +21679,7 @@ LIBPNG_DEFINES!$LIBPNG_DEFINES$ac_delim
 LIBPNG_NO_MMX!$LIBPNG_NO_MMX$ac_delim
 HAVE_LD_VERSION_SCRIPT_TRUE!$HAVE_LD_VERSION_SCRIPT_TRUE$ac_delim
 HAVE_LD_VERSION_SCRIPT_FALSE!$HAVE_LD_VERSION_SCRIPT_FALSE$ac_delim
+SYMBOL_PREFIX!$SYMBOL_PREFIX$ac_delim
 PNGLIB_VERSION!$PNGLIB_VERSION$ac_delim
 PNGLIB_MAJOR!$PNGLIB_MAJOR$ac_delim
 PNGLIB_MINOR!$PNGLIB_MINOR$ac_delim
@@ -21676,7 +21690,7 @@ compatlib!$compatlib$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 21; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 22; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5

configure.ac

@@ -18,15 +18,15 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.20rc5], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.26rc01], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.20rc5
+PNGLIB_VERSION=1.2.26rc01
 PNGLIB_MAJOR=1
 PNGLIB_MINOR=2
-PNGLIB_RELEASE=20
+PNGLIB_RELEASE=26
 
 dnl End of version number stuff
 
@@ -84,6 +84,16 @@ else
 fi
 AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
 
+if test "$have_ld_version_script" = "yes"; then
+    AC_MSG_CHECKING([for symbol prefix])
+    SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
+                   | ${CPP-${CC-gcc} -E} - 2>&1 \
+                   | ${EGREP-grep} "^PREFIX=" \
+                   | ${SED-sed} "s:^PREFIX=::"`
+    AC_SUBST(SYMBOL_PREFIX)
+    AC_MSG_RESULT($SYMBOL_PREFIX)
+fi
+
 # Substitutions for .in files
 AC_SUBST(PNGLIB_VERSION)
 AC_SUBST(PNGLIB_MAJOR)

contrib/gregbook/LICENSE

@@ -1,6 +1,6 @@
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors

contrib/gregbook/README

@@ -56,7 +56,7 @@ mation and links to the latest version of the source code, and Chapters
 
 Greg Roelofs
 http://pobox.com/~newt/greg_contact.html
-2 June 2007
+16 March 2008
 
 
 BUILD INSTRUCTIONS

contrib/gregbook/readpng2.h

@@ -4,7 +4,7 @@
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -69,6 +69,12 @@
 #  define Trace(x)  ;
 #endif
 
+enum rpng2_states {
+    kPreInit = 0,
+    kWindowInit,
+    kDone
+};
+
 typedef unsigned char   uch;
 typedef unsigned short  ush;
 typedef unsigned long   ulg;
@@ -95,7 +101,7 @@ typedef struct _mainprog_info {
     int nommxcombine;
     int nommxinterlace;
 #endif
-    int done;
+    int state;
     uch bg_red;
     uch bg_green;
     uch bg_blue;

contrib/gregbook/rpng-win.c

@@ -23,10 +23,11 @@
               command-line parsing bug
     - 1.10:  enabled "message window"/console (thanks to David Geldreich)
     - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed improper display of usage screen on PNG error(s)
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -77,7 +78,7 @@
 
 #define PROGNAME  "rpng-win"
 #define LONGNAME  "Simple PNG Viewer for Windows"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.01 of 16 March 2008"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -271,40 +272,11 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         }
     }
 
-    if (!filename) {
+    if (!filename)
         ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        if ((rc = readpng_init(infile, &image_width, &image_height)) != 0) {
-            switch (rc) {
-                case 1:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] is not a PNG file: incorrect signature\n",
-                      filename);
-                    break;
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng_init() error\n");
-                    break;
-            }
-            ++error;
-        }
-        if (error)
-            fclose(infile);
-    }
 
 
-    /* usage screen */
+    /* print usage screen if any errors up to this point */
 
     if (error) {
         int ch;
@@ -327,6 +299,47 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
             ch = _getch();
         while (ch != 'q' && ch != 'Q' && ch != 0x1B);
         exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        if ((rc = readpng_init(infile, &image_width, &image_height)) != 0) {
+            switch (rc) {
+                case 1:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] is not a PNG file: incorrect signature\n",
+                      filename);
+                    break;
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng_init() error\n");
+                    break;
+            }
+            ++error;
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        int ch;
+
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        do
+            ch = _getch();
+        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
+        exit(2);
     } else {
         fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
         fprintf(stderr,

contrib/gregbook/rpng-x.c

@@ -25,10 +25,11 @@
     - 1.13:  fixed XFreeGC() crash bug (thanks to Patrick Welche)
     - 1.14:  added support for X resources (thanks to Gerhard Niklasch)
     - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed improper display of usage screen on PNG error(s)
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -79,7 +80,7 @@
 
 #define PROGNAME  "rpng-x"
 #define LONGNAME  "Simple PNG Viewer for X"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.01 of 16 March 2008"
 #define RESNAME   "rpng"	/* our X resource application name */
 #define RESCLASS  "Rpng"	/* our X resource class name */
 
@@ -265,9 +266,33 @@ int main(int argc, char **argv)
         }
     }
 
-    if (!filename) {
+    if (!filename)
         ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
+
+
+    /* print usage screen if any errors up to this point */
+
+    if (error) {
+        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
+        readpng_version_info();
+        fprintf(stderr, "\n"
+          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
+          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
+          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
+          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
+          "\t\t  to the product of the lookup-table exponent (varies)\n"
+          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
+          "    bg  \tdesired background color in 7-character hex RGB format\n"
+          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
+          "\t\t  used with transparent images\n"
+          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
+          "is displayed) to quit.\n"
+          "\n", PROGNAME, default_display_exponent);
+        exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
         fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
         ++error;
     } else {
@@ -280,8 +305,7 @@ int main(int argc, char **argv)
                     break;
                 case 2:
                     fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
                     break;
                 case 4:
                     fprintf(stderr, PROGNAME ":  insufficient memory\n");
@@ -306,25 +330,9 @@ int main(int argc, char **argv)
     }
 
 
-    /* usage screen */
-
     if (error) {
-        fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
-        readpng_version_info();
-        fprintf(stderr, "\n"
-          "Usage:  %s [-display xdpy] [-gamma exp] [-bgcolor bg] file.png\n"
-          "    xdpy\tname of the target X display (e.g., ``hostname:0'')\n"
-          "    exp \ttransfer-function exponent (``gamma'') of the display\n"
-          "\t\t  system in floating-point format (e.g., ``%.1f''); equal\n"
-          "\t\t  to the product of the lookup-table exponent (varies)\n"
-          "\t\t  and the CRT exponent (usually 2.2); must be positive\n"
-          "    bg  \tdesired background color in 7-character hex RGB format\n"
-          "\t\t  (e.g., ``#ff7700'' for orange:  same as HTML colors);\n"
-          "\t\t  used with transparent images\n"
-          "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
-          "is displayed) to quit.\n"
-          "\n", PROGNAME, default_display_exponent);
-        exit(1);
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        exit(2);
     }
 
 

contrib/gregbook/rpng2-win.c

@@ -10,7 +10,7 @@
    tweaking (or maybe not).  Thanks to Adam Costello and Pieter S. van der
    Meulen for the "diamond" and "radial waves" patterns, respectively.
 
-   to do:
+   to do (someday, maybe):
     - handle quoted command-line args (especially filenames with spaces)
     - finish resizable checkerboard-gradient (sizes 4-128?)
     - use %.1023s to simplify truncation of title-bar string?
@@ -29,10 +29,13 @@
     - 1.21:  made minor tweak to usage screen to fit within 25-line console
     - 1.22:  added AMD64/EM64T support (__x86_64__)
     - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed 64-bit typo in readpng2.c
+    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
+              unexpected-EOF and file-read-error cases
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -83,7 +86,7 @@
 
 #define PROGNAME  "rpng2-win"
 #define LONGNAME  "Progressive PNG Viewer for Windows"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.02 of 16 March 2008"
 
 #include <stdio.h>
 #include <stdlib.h>
@@ -414,41 +417,11 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         }
     }
 
-    if (!filename) {
+    if (!filename)
         ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        incount = fread(inbuf, 1, INBUFSIZE, infile);
-        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
-            fprintf(stderr, PROGNAME
-              ":  [%s] is not a PNG file: incorrect signature\n",
-              filename);
-            ++error;
-        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
-            switch (rc) {
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng2_init() error\n");
-                    break;
-            }
-            ++error;
-        }
-        if (error)
-            fclose(infile);
-    }
 
 
-    /* usage screen */
+    /* print usage screen if any errors up to this point */
 
     if (error) {
         int ch;
@@ -488,6 +461,48 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
             ch = _getch();
         while (ch != 'q' && ch != 'Q' && ch != 0x1B);
         exit(1);
+    }
+
+
+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        incount = fread(inbuf, 1, INBUFSIZE, infile);
+        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
+            fprintf(stderr, PROGNAME
+              ":  [%s] is not a PNG file: incorrect signature\n",
+              filename);
+            ++error;
+        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
+            switch (rc) {
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng2_init() error\n");
+                    break;
+            }
+            ++error;
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        int ch;
+
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        do
+            ch = _getch();
+        while (ch != 'q' && ch != 'Q' && ch != 0x1B);
+        exit(2);
     } else {
         fprintf(stderr, "\n%s %s:  %s\n", PROGNAME, VERSION, appname);
         fprintf(stderr,
@@ -519,7 +534,7 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
     } else
         rpng2_info.need_bgcolor = TRUE;
 
-    rpng2_info.done = FALSE;
+    rpng2_info.state = kPreInit;
     rpng2_info.mainprog_init = rpng2_win_init;
     rpng2_info.mainprog_display_row = rpng2_win_display_row;
     rpng2_info.mainprog_finish_display = rpng2_win_finish_display;
@@ -539,10 +554,27 @@ int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrevInst, PSTR cmd, int showmode)
         if (readpng2_decode_data(&rpng2_info, inbuf, incount))
             ++error;
         Trace((stderr, "done with readpng2_decode_data()\n"))
-        if (error || feof(infile) || rpng2_info.done)
+
+        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
+            if (rpng2_info.state == kDone) {
+                Trace((stderr, "done decoding PNG image\n"))
+            } else if (ferror(infile)) {
+                fprintf(stderr, PROGNAME
+                  ":  error while reading PNG image file\n");
+                exit(3);
+            } else if (feof(infile)) {
+                fprintf(stderr, PROGNAME ":  end of file reached "
+                  "(unexpectedly) while reading PNG image file\n");
+                exit(3);
+            } else /* if (error) */ {
+                // will print error message below
+            }
             break;
+        }
+
         if (timing)
             Sleep(1000L);
+
         incount = fread(inbuf, 1, INBUFSIZE, infile);
     }
 
@@ -589,7 +621,7 @@ static void rpng2_win_init()
     ulg rowbytes = rpng2_info.rowbytes;
 
     Trace((stderr, "beginning rpng2_win_init()\n"))
-    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
     Trace((stderr, "  width  = %ld\n", rpng2_info.width))
     Trace((stderr, "  height = %ld\n", rpng2_info.height))
 
@@ -619,6 +651,8 @@ static void rpng2_win_init()
         readpng2_cleanup(&rpng2_info);
         return;
     }
+
+    rpng2_info.state = kWindowInit;
 }
 
 
@@ -1114,7 +1148,7 @@ static void rpng2_win_finish_display()
      * we have nothing to do here except set a flag and let the user know
      * that the image is done */
 
-    rpng2_info.done = TRUE;
+    rpng2_info.state = kDone;
     printf(
       "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
     fflush(stdout);

contrib/gregbook/rpng2-x.c

@@ -12,7 +12,7 @@
    Thanks to Adam Costello and Pieter S. van der Meulen for the "diamond"
    and "radial waves" patterns, respectively.
 
-   to do:
+   to do (someday, maybe):
     - fix expose/redraw code:  don't draw entire row if only part exposed
     - 8-bit (colormapped) X support
     - finish resizable checkerboard-gradient (sizes 4-128?)
@@ -36,10 +36,14 @@
     - 1.32:  added AMD64/EM64T support (__x86_64__); added basic expose/redraw
               handling
     - 2.00:  dual-licensed (added GNU GPL)
+    - 2.01:  fixed 64-bit typo in readpng2.c; fixed -pause usage description
+    - 2.02:  fixed improper display of usage screen on PNG error(s); fixed
+              unexpected-EOF and file-read-error cases; fixed Trace() cut-and-
+              paste bugs
 
   ---------------------------------------------------------------------------
 
-      Copyright (c) 1998-2007 Greg Roelofs.  All rights reserved.
+      Copyright (c) 1998-2008 Greg Roelofs.  All rights reserved.
 
       This software is provided "as is," without warranty of any kind,
       express or implied.  In no event shall the author or contributors
@@ -90,7 +94,7 @@
 
 #define PROGNAME  "rpng2-x"
 #define LONGNAME  "Progressive PNG Viewer for X"
-#define VERSION   "2.00 of 2 June 2007"
+#define VERSION   "2.02 of 16 March 2008"
 #define RESNAME   "rpng2"	/* our X resource application name */
 #define RESCLASS  "Rpng"	/* our X resource class name */
 
@@ -453,49 +457,11 @@ int main(int argc, char **argv)
         }
     }
 
-    if (!filename) {
+    if (!filename)
         ++error;
-    } else if (!(infile = fopen(filename, "rb"))) {
-        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
-        ++error;
-    } else {
-        incount = fread(inbuf, 1, INBUFSIZE, infile);
-        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
-            fprintf(stderr, PROGNAME
-              ":  [%s] is not a PNG file: incorrect signature\n",
-              filename);
-            ++error;
-        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
-            switch (rc) {
-                case 2:
-                    fprintf(stderr, PROGNAME
-                      ":  [%s] has bad IHDR (libpng longjmp)\n",
-                      filename);
-                    break;
-                case 4:
-                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
-                    break;
-                default:
-                    fprintf(stderr, PROGNAME
-                      ":  unknown readpng2_init() error\n");
-                    break;
-            }
-            ++error;
-        } else {
-            display = XOpenDisplay(displayname);
-            if (!display) {
-                readpng2_cleanup(&rpng2_info);
-                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
-                  displayname? displayname : "default");
-                ++error;
-            }
-        }
-        if (error)
-            fclose(infile);
-    }
 
 
-    /* usage screen */
+    /* print usage screen if any errors up to this point */
 
     if (error) {
         fprintf(stderr, "\n%s %s:  %s\n\n", PROGNAME, VERSION, appname);
@@ -533,7 +499,7 @@ int main(int argc, char **argv)
           "\t\t  row (for demo purposes)\n"
           "    -timing\tenables delay for every block read, to simulate modem\n"
           "\t\t  download of image (~36 Kbps)\n"
-          "    -pause\tpauses after displaying each pass until key pressed\n"
+          "    -pause\tpauses after displaying each pass until mouse clicked\n"
           "\nPress Q, Esc or mouse button 1 (within image window, after image\n"
           "is displayed) to quit.\n"
           "\n", PROGNAME,
@@ -545,6 +511,52 @@ int main(int argc, char **argv)
     }
 
 
+    if (!(infile = fopen(filename, "rb"))) {
+        fprintf(stderr, PROGNAME ":  can't open PNG file [%s]\n", filename);
+        ++error;
+    } else {
+        incount = fread(inbuf, 1, INBUFSIZE, infile);
+        if (incount < 8 || !readpng2_check_sig(inbuf, 8)) {
+            fprintf(stderr, PROGNAME
+              ":  [%s] is not a PNG file: incorrect signature\n",
+              filename);
+            ++error;
+        } else if ((rc = readpng2_init(&rpng2_info)) != 0) {
+            switch (rc) {
+                case 2:
+                    fprintf(stderr, PROGNAME
+                      ":  [%s] has bad IHDR (libpng longjmp)\n", filename);
+                    break;
+                case 4:
+                    fprintf(stderr, PROGNAME ":  insufficient memory\n");
+                    break;
+                default:
+                    fprintf(stderr, PROGNAME
+                      ":  unknown readpng2_init() error\n");
+                    break;
+            }
+            ++error;
+        } else {
+            Trace((stderr, "about to call XOpenDisplay()\n"))
+            display = XOpenDisplay(displayname);
+            if (!display) {
+                readpng2_cleanup(&rpng2_info);
+                fprintf(stderr, PROGNAME ":  can't open X display [%s]\n",
+                  displayname? displayname : "default");
+                ++error;
+            }
+        }
+        if (error)
+            fclose(infile);
+    }
+
+
+    if (error) {
+        fprintf(stderr, PROGNAME ":  aborting.\n");
+        exit(2);
+    }
+
+
     /* set the title-bar string, but make sure buffer doesn't overflow */
 
     alen = strlen(appname);
@@ -567,7 +579,7 @@ int main(int argc, char **argv)
     } else
         rpng2_info.need_bgcolor = TRUE;
 
-    rpng2_info.done = FALSE;
+    rpng2_info.state = kPreInit;
     rpng2_info.mainprog_init = rpng2_x_init;
     rpng2_info.mainprog_display_row = rpng2_x_display_row;
     rpng2_info.mainprog_finish_display = rpng2_x_finish_display;
@@ -587,10 +599,27 @@ int main(int argc, char **argv)
         if (readpng2_decode_data(&rpng2_info, inbuf, incount))
             ++error;
         Trace((stderr, "done with readpng2_decode_data()\n"))
-        if (error || feof(infile) || rpng2_info.done)
+
+        if (error || incount != INBUFSIZE || rpng2_info.state == kDone) {
+            if (rpng2_info.state == kDone) {
+                Trace((stderr, "done decoding PNG image\n"))
+            } else if (ferror(infile)) {
+                fprintf(stderr, PROGNAME
+                  ":  error while reading PNG image file\n");
+                exit(3);
+            } else if (feof(infile)) {
+                fprintf(stderr, PROGNAME ":  end of file reached "
+                  "(unexpectedly) while reading PNG image file\n");
+                exit(3);
+            } else /* if (error) */ {
+                // will print error message below
+            }
             break;
+        }
+
         if (timing)
             sleep(1);
+
         incount = fread(inbuf, 1, INBUFSIZE, infile);
     }
 
@@ -610,6 +639,7 @@ int main(int argc, char **argv)
 #ifdef FEATURE_LOOP
 
     if (loop && bg_image) {
+        Trace((stderr, "entering -loop loop (FEATURE_LOOP)\n"))
         for (;;) {
             int i, use_sleep;
             struct timeval now, then;
@@ -705,13 +735,20 @@ int main(int argc, char **argv)
 
     /* wait for the user to tell us when to quit */
 
-    do {
-        XNextEvent(display, &e);
-        if (e.type == Expose) {
-            XExposeEvent *ex = (XExposeEvent *)&e;
-            rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
-        }
-    } while (!QUIT(e,k));
+    if (rpng2_info.state >= kWindowInit) {
+        Trace((stderr, "entering final wait-for-quit-event loop\n"))
+        do {
+            XNextEvent(display, &e);
+            if (e.type == Expose) {
+                XExposeEvent *ex = (XExposeEvent *)&e;
+                rpng2_x_redisplay_image (ex->x, ex->y, ex->width, ex->height);
+            }
+        } while (!QUIT(e,k));
+    } else {
+        fprintf(stderr, PROGNAME ":  init callback never called:  probable "
+          "libpng error while decoding PNG metadata\n");
+        exit(4);
+    }
 
 
     /* we're done:  clean up all image and X resources and go away */
@@ -736,7 +773,7 @@ static void rpng2_x_init(void)
     ulg rowbytes = rpng2_info.rowbytes;
 
     Trace((stderr, "beginning rpng2_x_init()\n"))
-    Trace((stderr, "  rowbytes = %ld\n", rpng2_info.rowbytes))
+    Trace((stderr, "  rowbytes = %d\n", rpng2_info.rowbytes))
     Trace((stderr, "  width  = %ld\n", rpng2_info.width))
     Trace((stderr, "  height = %ld\n", rpng2_info.height))
 
@@ -773,6 +810,8 @@ static void rpng2_x_init(void)
         rpng2_x_cleanup();
         exit(2);
     }
+
+    rpng2_info.state = kWindowInit;
 }
 
 
@@ -1556,7 +1595,7 @@ static void rpng2_x_finish_display(void)
      * have nothing to do here except set a flag and let the user know that
      * the image is done */
 
-    rpng2_info.done = TRUE;
+    rpng2_info.state = kDone;
     printf(
       "Done.  Press Q, Esc or mouse button 1 (within image window) to quit.\n");
     fflush(stdout);
@@ -1581,9 +1620,9 @@ static void rpng2_x_redisplay_image(ulg startcol, ulg startrow,
 
 
     Trace((stderr, "beginning display loop (image_channels == %d)\n",
-      image_channels))
-    Trace((stderr, "   (width = %ld, rowbytes = %ld, ximage_rowbytes = %d)\n",
-      rpng2_info.width, image_rowbytes, ximage_rowbytes))
+      rpng2_info.channels))
+    Trace((stderr, "   (width = %ld, rowbytes = %d, ximage_rowbytes = %d)\n",
+      rpng2_info.width, rpng2_info.rowbytes, ximage_rowbytes))
     Trace((stderr, "   (bpp = %d)\n", ximage->bits_per_pixel))
     Trace((stderr, "   (byte_order = %s)\n", ximage->byte_order == MSBFirst?
       "MSBFirst" : (ximage->byte_order == LSBFirst? "LSBFirst" : "unknown")))

contrib/pngminim/decoder/gather.sh

@@ -1,8 +1,8 @@
 cp ../../pngminus/png2pnm.c pngm2pnm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c
+rm example.c pnggccrd.c pngvcrd.c pngtest.c pngpread.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
+rm minigzip.c example.c compress.c deflate.c 

contrib/pngminim/decoder/makefile.std

@@ -20,7 +20,7 @@ ZOBJS  = adler32$(O) crc32$(O) gzio$(O) \
 	 trees$(O) uncompr$(O) zutil$(O)
 
 OBJS  = pngm2pnm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
-	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
+	pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
 	pngset$(O) pngtrans$(O)  $(ZOBJS)
 
 # implicit make rules -------------------------------------------------------

contrib/pngminim/encoder/gather.sh

@@ -1,7 +1,7 @@
 cp ../../pngminus/pnm2png.c pnm2pngm.c
 cp ../../../*.h .
 cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c
+rm example.c pnggccrd.c pngvcrd.c pngtest.c pngr*.c
 # Change the next 2 lines if zlib is somewhere else.
 cp ../../../../zlib/*.h .
 cp ../../../../zlib/*.c .

contrib/pngminim/encoder/makefile.std

@@ -19,7 +19,6 @@ ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) gzio$(O) \
 	 trees$(O) uncompr$(O) zutil$(O)
 
 OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
-	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
 	pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
 	pngwtran$(O) pngwutil$(O) $(ZOBJS)
 

libpng-1.2.26rc01.txt

@@ -1,9 +1,9 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.20rc5 - September 2, 2007
+ libpng version 1.2.26rc01 - March 26, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
  For conditions of distribution and use, see copyright
  notice in png.h.
 
@@ -2796,13 +2796,13 @@ application:
 
 IX. Y2K Compliance in libpng
 
-September 2, 2007
+March 26, 2008
 
 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 1.2.20rc5 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.26rc01 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

libpng.3

@@ -1,404 +1,815 @@
-.TH LIBPNG 3 "September 2, 2007"
+.TH LIBPNG 3 "March 26, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.20rc5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26rc01
 .SH SYNOPSIS
-\fB
-#include <png.h>\fP
+\fI\fB
+
+\fB#include <png.h>\fP
+
+\fI\fB
 
 \fBpng_uint_32 png_access_version_number \fI(void\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_check_sig (png_bytep \fP\fIsig\fP\fB, int \fInum\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_chunk_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_convert_from_struct_tm (png_timep \fP\fIptime\fP\fB, struct tm FAR * \fIttime\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_convert_from_time_t (png_timep \fP\fIptime\fP\fB, time_t \fIttime\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_charp png_convert_to_rfc1123 (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fIptime\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_infop png_create_info_struct (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_structp png_create_read_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_structp png_create_read_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_structp png_create_write_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_structp png_create_write_struct_2(png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_debug(int \fP\fIlevel\fP\fB, png_const_charp \fImessage\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_debug1(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fIp1\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_debug2(int \fP\fIlevel\fP\fB, png_const_charp \fP\fImessage\fP\fB, \fP\fIp1\fP\fB, \fIp2\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_destroy_read_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fP\fIinfo_ptr_ptr\fP\fB, png_infopp \fIend_info_ptr_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_destroy_write_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_free (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_free_chunk_list (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_free_default(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_free_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fInum\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fI*background\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_channels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*white_x\fP\fB, double \fP\fI*white_y\fP\fB, double \fP\fI*red_x\fP\fB, double \fP\fI*red_y\fP\fB, double \fP\fI*green_x\fP\fB, double \fP\fI*green_y\fP\fB, double \fP\fI*blue_x\fP\fB, double \fI*blue_y\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*white_x\fP\fB, png_uint_32 \fP\fI*white_y\fP\fB, png_uint_32 \fP\fI*red_x\fP\fB, png_uint_32 \fP\fI*red_y\fP\fB, png_uint_32 \fP\fI*green_x\fP\fB, png_uint_32 \fP\fI*green_y\fP\fB, png_uint_32 \fP\fI*blue_x\fP\fB, png_uint_32 \fI*blue_y\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_color_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_compression_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_copyright (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_error_ptr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_filter_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fI*file_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fI*int_file_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_header_ver (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_header_version (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_charpp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*width\fP\fB, png_uint_32 \fP\fI*height\fP\fB, int \fP\fI*bit_depth\fP\fB, int \fP\fI*color_type\fP\fB, int \fP\fI*interlace_type\fP\fB, int \fP\fI*compression_type\fP\fB, int \fI*filter_type\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_image_height (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_image_width (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fB#if !defined(PNG_1_0_X) png_int_32 png_get_int_32 (png_bytep buf); \fI#endif
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB#endif
+
+\fI\fB
 
 \fBpng_byte png_get_interlace_type (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_byte png_get_libpng_ver (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_mem_ptr(png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fI*purpose\fP\fB, png_int_32 \fP\fI*X0\fP\fB, png_int_32 \fP\fI*X1\fP\fB, int \fP\fI*type\fP\fB, int \fP\fI*nparams\fP\fB, png_charp \fP\fI*units\fP\fB, png_charpp \fI*params\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP
 
+\fI\fB
+
 \fBfloat png_get_pixel_aspect_ratio (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_progressive_ptr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fI*palette\fP\fB, int \fI*num_palette\fP\fB);\fP
 
-\fBpng_byte png_get_rgb_to_gray_status (png_structp png_ptr) png_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+\fI\fB
+
+\fBpng_byte png_get_rgb_to_gray_status (png_structp \fIpng_ptr)
+
+\fBpng_uint_32 png_get_rowbytes (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
+
+\fI\fB
 
 \fBpng_bytepp png_get_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fI*sig_bit\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_bytep png_get_signature (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fI*splt_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fI*intent\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fI*text_ptr\fP\fB, int \fI*num_text\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fI*mod_time\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fI*trans\fP\fB, int \fP\fI*num_trans\fP\fB, png_color_16p \fI*trans_values\fP\fB);\fP
 
-\fB#if !defined(PNG_1_0_X) png_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB
 
 \fBpng_uint_32 png_get_uint_31 (png_bytep \fIbuf\fP\fB);\fP
 
-\fBpng_uint_32 png_get_uint_32 (png_bytep buf); \fI#endif
+\fI\fB
+
+\fBpng_uint_32 png_get_uint_32 (png_bytep \fIbuf\fP\fB);\fP
+
+\fI\fB#endif
+
+\fI\fB
 
 \fBpng_uint_32 png_get_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkpp \fIunknowns\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_user_chunk_ptr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_user_height_max( png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_get_user_transform_ptr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_user_width_max (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_valid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_int_32 png_get_x_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_int_32 png_get_x_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_x_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_int_32 png_get_y_offset_microns (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_int_32 png_get_y_offset_pixels (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_y_pixels_per_meter (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_get_compression_buffer_size (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_handle_as_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_init_io (png_structp \fP\fIpng_ptr\fP\fB, FILE \fI*fp\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_info_init (png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_info_init_2 (png_infopp \fP\fIptr_ptr\fP\fB, png_size_t \fIpng_info_struct_size\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_malloc_default(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBvoidp png_memcpy (png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_size_t \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_memcpy_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, png_voidp \fP\fIs2\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBvoidp png_memset (png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_size_t \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_voidp png_memset_check (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIs1\fP\fB, int \fP\fIvalue\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_permit_empty_plte (png_structp \fP\fIpng_ptr\fP\fB, int \fIempty_plte_permitted\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_process_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_size\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_progressive_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIold_row\fP\fB, png_bytep \fInew_row\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_infop \fIend_info_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_read_init (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_read_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fIdisplay_row\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_bytepp \fP\fIdisplay_row\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_read_update_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
-\fB#if !defined(PNG_1_0_X) png_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
+\fI\fB
+
+\fB#if \fI!defined(PNG_1_0_X)
+
+\fBpng_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
+
+\fI\fB
 
 \fBvoid png_save_uint_16 (png_bytep \fP\fIbuf\fP\fB, unsigned int \fIi\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_save_uint_32 (png_bytep \fP\fIbuf\fP\fB, png_uint_32 \fIi\fP\fB);\fP
 
-\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int flags); \fI#endif
+\fI\fB
+
+\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
+
+\fI\fB#endif
+
+\fI\fB
 
 \fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_bgr (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fIbackground\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_method (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_crc_action (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcrit_action\fP\fB, int \fIancil_action\fP\fB);\fP
 
+\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
+
 \fBvoid png_set_expand (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_expand_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_filler (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_filter (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImethod\fP\fB, int \fIfilters\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_filter_heuristics (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_doublep \fP\fIfilter_weights\fP\fB, png_doublep \fIfilter_costs\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_flush (png_structp \fP\fIpng_ptr\fP\fB, int \fInrows\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_gamma (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIscreen_gamma\fP\fB, double \fIdefault_file_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIfile_gamma\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_gray_1_2_4_to_8(png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_gray_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_set_interlace_handling (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_invalid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fImask\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_invert_alpha (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_invert_mono (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_keep_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIkeep\fP\fB, png_bytep \fP\fIchunk_list\fP\fB, int \fInum_chunks\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_mem_fn(png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_packing (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_packswap (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_palette_to_rgb(png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIres_x\fP\fB, png_uint_32 \fP\fIres_y\fP\fB, int \fIunit_type\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_progressive_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIprogressive_ptr\fP\fB, png_progressive_info_ptr \fP\fIinfo_fn\fP\fB, png_progressive_row_ptr \fP\fIrow_fn\fP\fB, png_progressive_end_ptr \fIend_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\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
+
 \fBvoid png_set_read_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_read_status_ptr \fIread_row_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_read_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIread_user_transform_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_rgb_to_gray (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIerror_action\fP\fB, double \fP\fIred\fP\fB, double \fIgreen\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_rgb_to_gray_fixed (png_structp \fP\fIpng_ptr\fP\fB, int error_action png_fixed_point \fP\fIred\fP\fB, png_fixed_point \fIgreen\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytepp \fIrow_pointers\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fIsig_bit\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_shift (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fItrue_bits\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sig_bytes (png_structp \fP\fIpng_ptr\fP\fB, int \fInum_bytes\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fP\fIsplt_ptr\fP\fB, int \fInum_spalettes\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIintent\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_strip_16 (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_strip_alpha (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_swap_alpha (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fP\fInum_trans\fP\fB, png_color_16p \fItrans_values\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_tRNS_to_alpha(png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBpng_uint_32 png_set_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkp \fP\fIunknowns\fP\fB, int \fP\fInum\fP\fB, int \fIlocation\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_unknown_chunk_location(png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIchunk\fP\fB, int \fIlocation\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_read_user_chunk_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_chunk_ptr\fP\fB, png_user_chunk_ptr \fIread_user_chunk_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_write_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fP\fIwrite_data_fn\fP\fB, png_flush_ptr \fIoutput_flush_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_write_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_write_status_ptr \fIwrite_row_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_write_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIwrite_user_transform_fn\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_set_compression_buffer_size(png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBint png_sig_cmp (png_bytep \fP\fIsig\fP\fB, png_size_t \fP\fIstart\fP\fB, png_size_t \fInum_to_check\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_start_read_image (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_chunk_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_chunk_end (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_chunk_start (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_destroy (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_flush (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_write_init (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBDEPRECATED: void png_write_init_2 (png_structpp \fP\fIptr_ptr\fP\fB, png_const_charp \fP\fIuser_png_ver\fP\fB, png_size_t \fP\fIpng_struct_size\fP\fB, png_size_t \fIpng_info_size\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_info_before_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_write_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
 
+\fI\fB
+
 \fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
 
+\fI\fB
+
 \fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
 
+\fI\fB
+
 .SH DESCRIPTION
 The
 .I libpng
@@ -410,10 +821,10 @@ 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 1.2.20rc5 - September 2, 2007
+ libpng version 1.2.26rc01 - March 26, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
  For conditions of distribution and use, see copyright
  notice in png.h.
 
@@ -3206,13 +3617,13 @@ application:
 
 .SH IX. Y2K Compliance in libpng
 
-September 2, 2007
+March 26, 2008
 
 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 1.2.20rc5 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.26rc01 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
@@ -3407,10 +3818,31 @@ the first widely used release:
  1.0.27              10    10027  10.so.0.27[.0]
  1.2.19              13    10219  12.so.0.19[.0]
  1.2.20beta01-04     13    10220  12.so.0.20[.0]
- 1.0.28rc1-5         10    10028  10.so.0.28[.0]
- 1.2.20rc1-5         13    10220  12.so.0.20[.0]
+ 1.0.28rc1-6         10    10028  10.so.0.28[.0]
+ 1.2.20rc1-6         13    10220  12.so.0.20[.0]
  1.0.28              10    10028  10.so.0.28[.0]
  1.2.20              13    10220  12.so.0.20[.0]
+ 1.2.21beta1-2       13    10221  12.so.0.21[.0]
+ 1.2.21rc1-3         13    10221  12.so.0.21[.0]
+ 1.0.29              10    10029  10.so.0.29[.0]
+ 1.2.21              13    10221  12.so.0.21[.0]
+ 1.2.22beta1-4       13    10222  12.so.0.22[.0]
+ 1.0.30rc1           13    10030  10.so.0.30[.0]
+ 1.2.22rc1           13    10222  12.so.0.22[.0]
+ 1.0.30              10    10030  10.so.0.30[.0]
+ 1.2.22              13    10222  12.so.0.22[.0]
+ 1.2.23beta01-05     13    10223  12.so.0.23[.0]
+ 1.2.23rc01          13    10223  12.so.0.23[.0]
+ 1.2.23              13    10223  12.so.0.23[.0]
+ 1.2.24beta01-02     13    10224  12.so.0.24[.0]
+ 1.2.24rc01          13    10224  12.so.0.24[.0]
+ 1.2.24              13    10224  12.so.0.24[.0]
+ 1.2.25beta01-06     13    10225  12.so.0.25[.0]
+ 1.2.25rc01-02       13    10225  12.so.0.25[.0]
+ 1.0.31              10    10031  10.so.0.31[.0]
+ 1.2.25              13    10225  12.so.0.25[.0]
+ 1.2.26beta01-06     13    10226  12.so.0.26[.0]
+ 1.2.26rc01          13    10226  12.so.0.26[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3466,7 +3898,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.20rc5 - September 2, 2007:
+Libpng version 1.2.26rc01 - March 26, 2008:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3487,8 +3919,8 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.2.6, August 15, 2004, through 1.2.20rc5, September 2, 2007, are
-Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.2.26rc01, March 26, 2008, are
+Copyright (c) 2004,2006-2008 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
 
@@ -3586,7 +4018,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-September 2, 2007
+March 26, 2008
 
 .\" end of man page
 

libpngpf.3

@@ -1,266 +1,776 @@
-.TH LIBPNGPF 3 "September 2, 2007"
+.TH LIBPNGPF 3 "March 26, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.20rc5
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26rc01
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_calculate_crc (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIptr\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBpng_size_t png_check_keyword (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charpp \fInew_key\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fImask\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_correct_palette (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBint png_crc_error (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBint png_crc_finish (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIskip\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_crc_read (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuf\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBpng_voidp png_create_struct (int \fItype\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBpng_voidp png_create_struct_2 (int \fP\fItype\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBpng_charp png_decompress_chunk (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcomp_type\fP\fB, png_charp \fP\fIchunkdata\fP\fB, png_size_t \fP\fIchunklength\fP\fB, png_size_t \fP\fIprefix_length\fP\fB, png_size_t \fI*data_length\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_destroy_struct (png_voidp \fIstruct_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_destroy_struct_2 (png_voidp \fP\fIstruct_ptr\fP\fB, png_free_ptr \fP\fIfree_fn\fP\fB, png_voidp \fImem_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_background (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_16p \fP\fItrans_values\fP\fB, png_color_16p \fP\fIbackground\fP\fB, png_color_16p \fP\fIbackground_1\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_bytep \fP\fIgamma_from_1\fP\fB, png_bytep \fP\fIgamma_to_1\fP\fB, png_uint_16pp \fP\fIgamma_16\fP\fB, png_uint_16pp \fP\fIgamma_16_from_1\fP\fB, png_uint_16pp \fP\fIgamma_16_to_1\fP\fB, int \fIgamma_shift\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_bgr (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_chop (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\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
+
+\fI\fB
+
 \fBvoid png_do_expand_palette (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_bytep \fP\fItrans\fP\fB, int \fInum_trans\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_gamma (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIgamma_table\fP\fB, png_uint_16pp \fP\fIgamma_16_table\fP\fB, int \fIgamma_shift\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_gray_to_rgb (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_invert (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_pack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIbit_depth\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_packswap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\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
+
+\fI\fB
+
 \fBvoid png_do_read_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fP\fIpass\fP\fB, png_uint_32 \fItransformations\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_read_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_read_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBint png_do_rgb_to_gray (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_shift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIbit_depth\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_strip_filler (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_uint_32 \fIflags\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_swap (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_unpack (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_unshift (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_color_8p \fIsig_bits\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_write_interlace (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, int \fIpass\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_write_invert_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_write_swap_alpha (png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_do_write_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid *png_far_to_near (png_structp png_ptr,png_voidp \fP\fIptr\fP\fB, int \fIcheck\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_flush (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_IEND (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_iTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_info_destroy (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_process_IDAT_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_process_some_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_check_crc (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_crc_finish (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_crc_skip (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_fill_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_handle_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_handle_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_handle_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_have_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_have_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_have_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_process_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_IDAT (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_sig (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_read_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_restore_buffer (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_length\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_push_save_buffer (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_filter_row (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fP\fIrow_info\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fP\fIprev_row\fP\fB, int \fIfilter\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_push_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_start_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_read_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_reset_crc (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBint png_set_text_2 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_cHRM (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_filtered_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIfiltered_row\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_find_filter (png_structp \fP\fIpng_ptr\fP\fB, png_row_infop \fIrow_info\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_finish_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_gAMA (png_structp \fP\fIpng_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIint_file_gamma\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_uint_16p \fP\fIhist\fP\fB, int \fInum_hist\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_charp \fP\fIprofile\fP\fB, int \fIproflen\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_IDAT (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_IEND (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fP\fIfilter_type\fP\fB, int \fIinterlace_type\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_iTXt (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcompression\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fIlang\fP\fB, png_charp \fP\fItranslated_key\fP\fB, png_charp \fItext\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_offset\fP\fB, png_uint_32 \fP\fIy_offset\fP\fB, int \fIunit_type\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIx_pixels_per_unit\fP\fB, png_uint_32 \fP\fIy_pixels_per_unit\fP\fB, int \fIunit_type\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, png_uint_32 \fInum_pal\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fP\fIsbit\fP\fB, int \fIcolor_type\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sRGB (png_structp \fP\fIpng_ptr\fP\fB, int \fIintent\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_spalette_p \fIpalette\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_start_row (png_structp \fIpng_ptr\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_tEXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fItext_len\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fItrans\fP\fB, png_color_16p \fP\fIvalues\fP\fB, int \fP\fInumber\fP\fB, int \fIcolor_type\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_write_zTXt (png_structp \fP\fIpng_ptr\fP\fB, png_charp \fP\fIkey\fP\fB, png_charp \fP\fItext\fP\fB, png_size_t \fP\fItext_len\fP\fB, int \fIcompression\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoidpf png_zalloc (voidpf \fP\fIpng_ptr\fP\fB, uInt \fP\fIitems\fP\fB, uInt \fIsize\fP\fB);\fP
 
+\fI\fB
+
+\fI\fB
+
 \fBvoid png_zfree (voidpf \fP\fIpng_ptr\fP\fB, voidpf \fIptr\fP\fB);\fP
 
 \fI\fB
 
+\fI\fB
+
 .SH DESCRIPTION
 The functions listed above are used privately by libpng
 and are not recommended for use by applications.  They are

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "September 2, 2007"
+.TH PNG 5 "March 26, 2008"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.19 August 19, 2007
+ * Last changed in libpng 1.2.21 October 4, 2007
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -13,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_20rc5 Your_png_h_is_not_version_1_2_20rc5;
+typedef version_1_2_26rc01 Your_png_h_is_not_version_1_2_26rc01;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -693,8 +693,8 @@ png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
    png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.20rc5 - September 2, 2007\n\
-   Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
+   return ((png_charp) "\n libpng version 1.2.26rc01 - March 26, 2008\n\
+   Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
 }
@@ -729,7 +729,7 @@ png_get_header_version(png_structp png_ptr)
    /* Returns longer string containing both version and date */
    png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
    return ((png_charp) PNG_HEADER_VERSION_STRING
-#ifdef PNG_READ_SUPPORTED
+#ifndef PNG_READ_SUPPORTED
    "     (NO READ SUPPORT)"
 #endif
    "\n");

png.h

@@ -1,15 +1,15 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.20rc5 - September 2, 2007
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * libpng version 1.2.26rc01 - March 26, 2008
+ * Copyright (c) 1998-2008 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.)
  *
  * 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 1.2.20rc5 - September 2, 2007: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.26rc01 - March 26, 2008: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -156,10 +156,31 @@
  *    1.0.27                  10    10027  10.so.0.27[.0]
  *    1.2.19                  13    10219  12.so.0.19[.0]
  *    1.2.20beta01-04         13    10220  12.so.0.20[.0]
- *    1.0.28rc1-5             10    10028  10.so.0.28[.0]
- *    1.2.20rc1-5             13    10220  12.so.0.20[.0]
+ *    1.0.28rc1-6             10    10028  10.so.0.28[.0]
+ *    1.2.20rc1-6             13    10220  12.so.0.20[.0]
  *    1.0.28                  10    10028  10.so.0.28[.0]
  *    1.2.20                  13    10220  12.so.0.20[.0]
+ *    1.2.21beta1-2           13    10221  12.so.0.21[.0]
+ *    1.2.21rc1-3             13    10221  12.so.0.21[.0]
+ *    1.0.29                  10    10029  10.so.0.29[.0]
+ *    1.2.21                  13    10221  12.so.0.21[.0]
+ *    1.2.22beta1-4           13    10222  12.so.0.22[.0]
+ *    1.0.30rc1               10    10030  10.so.0.30[.0]
+ *    1.2.22rc1               13    10222  12.so.0.22[.0]
+ *    1.0.30                  10    10030  10.so.0.30[.0]
+ *    1.2.22                  13    10222  12.so.0.22[.0]
+ *    1.2.23beta01-05         13    10223  12.so.0.23[.0]
+ *    1.2.23rc01              13    10223  12.so.0.23[.0]
+ *    1.2.23                  13    10223  12.so.0.23[.0]
+ *    1.2.24beta01-02         13    10224  12.so.0.24[.0]
+ *    1.2.24rc01              13    10224  12.so.0.24[.0]
+ *    1.2.24                  13    10224  12.so.0.24[.0]
+ *    1.2.25beta01-06         13    10225  12.so.0.25[.0]
+ *    1.2.25rc01-02           13    10225  12.so.0.25[.0]
+ *    1.0.31                  10    10031  10.so.0.31[.0]
+ *    1.2.25                  13    10225  12.so.0.25[.0]
+ *    1.2.26beta01-06         13    10226  12.so.0.26[.0]
+ *    1.2.26rc01              13    10226  12.so.0.26[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -189,8 +210,8 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.20rc5, September 2, 2007, are
- * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.26rc01, March 26, 2008, are
+ * Copyright (c) 2004, 2006-2008 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:
  *
@@ -301,13 +322,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    September 2, 2007
+ *    March 26, 2008
  *
  *    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 1.2.20rc5 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.26rc01 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
@@ -363,9 +384,9 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.20rc5"
+#define PNG_LIBPNG_VER_STRING "1.2.26rc01"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.20rc5 - September 2, 2007\n"
+   " libpng version 1.2.26rc01 - March 26, 2008\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
 #define PNG_LIBPNG_VER_DLLNUM  13
@@ -373,11 +394,11 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 20
+#define PNG_LIBPNG_VER_RELEASE 26
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  5
+#define PNG_LIBPNG_VER_BUILD  01
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -401,7 +422,7 @@
  * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
  * 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 10220 /* 1.2.20 */
+#define PNG_LIBPNG_VER 10226 /* 1.2.26 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 /* include the compression library's header */
@@ -642,9 +663,10 @@ typedef png_time FAR * FAR * png_timepp;
  * up private chunks for output even though the library doesn't actually
  * know about their semantics.
  */
+#define PNG_CHUNK_NAME_LENGTH 5
 typedef struct png_unknown_chunk_t
 {
-    png_byte name[5];
+    png_byte name[PNG_CHUNK_NAME_LENGTH];
     png_byte *data;
     png_size_t size;
 
@@ -1171,10 +1193,12 @@ struct png_struct_def
    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 */
+#ifndef PNG_NO_WRITE_FILTERING
    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 */
+#endif
    png_row_info row_info;     /* used for transformation routines */
 
    png_uint_32 idat_size;     /* current IDAT size for read */
@@ -1406,13 +1430,16 @@ struct png_struct_def
    /* 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, old_prev_row_size;
 };
 
 
 /* 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_2_20rc5;
+typedef png_structp version_1_2_26rc01;
 
 typedef png_struct FAR * FAR * png_structpp;
 

pngconf.h

@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.20rc5 - September 2, 2007
+ * libpng version 1.2.26rc01 - March 26, 2008
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  */
@@ -76,9 +76,12 @@
 /* End of material added to libpng-1.2.8 */
 
 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble
-#    define PNG_WARN_UNINITIALIZED_ROW 1
-*/
-/* End of material added at libpng-1.2.19 */
+   Restored at libpng-1.2.21 */
+#if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \
+    !defined(PNG_WARN_UNINITIALIZED_ROW)
+#  define PNG_WARN_UNINITIALIZED_ROW 1
+#endif
+/* End of material added at libpng-1.2.19/1.2.21 */
 
 /* This is the size of the compression buffer, and thus the size of
  * an IDAT chunk.  Make this whatever size you feel is best for your
@@ -320,7 +323,7 @@
      /* If you encounter a compiler error here, see the explanation
       * near the end of INSTALL.
       */
-         __png.h__ already includes setjmp.h;
+         __pngconf.h__ already includes setjmp.h;
          __dont__ include it again.;
 #    endif
 #  endif /* __linux__ */
@@ -330,7 +333,9 @@
 
 #  ifdef __linux__
 #    ifdef PNG_SAVE_BSD_SOURCE
-#      define _BSD_SOURCE
+#      ifndef _BSD_SOURCE
+#        define _BSD_SOURCE
+#      endif
 #      undef PNG_SAVE_BSD_SOURCE
 #    endif
 #  endif /* __linux__ */
@@ -1427,8 +1432,6 @@ typedef z_stream FAR *  png_zstreamp;
 #  define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
 #  define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
 #  define png_snprintf _fsnprintf   /* Added to v 1.2.19 */
-#  define png_strcpy  _fstrcpy
-#  define png_strncpy _fstrncpy   /* Added to v 1.2.6 */
 #  define png_strlen  _fstrlen
 #  define png_memcmp  _fmemcmp    /* SJT: added */
 #  define png_memcpy  _fmemcpy
@@ -1457,8 +1460,6 @@ typedef z_stream FAR *  png_zstreamp;
 #    define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
         sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
 #  endif
-#  define png_strcpy  strcpy
-#  define png_strncpy strncpy     /* Added to v 1.2.6 */
 #  define png_strlen  strlen
 #  define png_memcmp  memcmp      /* SJT: added */
 #  define png_memcpy  memcpy

pngerror.c

@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.20 September 2, 2007
+ * Last changed in libpng 1.2.22 [October 13, 2007]
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 1998-2007 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -136,6 +136,8 @@ static PNG_CONST char png_digit[16] = {
    'A', 'B', 'C', 'D', 'E', 'F'
 };
 
+#define PNG_MAX_ERROR_TEXT 64
+
 #if !defined(PNG_NO_WARNINGS) || !defined(PNG_NO_ERROR_TEXT)
 static void /* PRIVATE */
 png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
@@ -160,13 +162,13 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
    }
 
    if (error_message == NULL)
-      buffer[iout] = 0;
+      buffer[iout] = '\0';
    else
    {
       buffer[iout++] = ':';
       buffer[iout++] = ' ';
-      png_strncpy(buffer+iout, error_message, 63);
-      buffer[iout+63] = 0;
+      png_memcpy(buffer+iout, error_message, PNG_MAX_ERROR_TEXT);
+      buffer[iout+PNG_MAX_ERROR_TEXT-1] = '\0';
    }
 }
 
@@ -174,7 +176,7 @@ png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
 void PNGAPI
 png_chunk_error(png_structp png_ptr, png_const_charp error_message)
 {
-   char msg[18+64];
+   char msg[18+PNG_MAX_ERROR_TEXT];
    if (png_ptr == NULL)
      png_error(png_ptr, error_message);
    else
@@ -190,7 +192,7 @@ png_chunk_error(png_structp png_ptr, png_const_charp error_message)
 void PNGAPI
 png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
 {
-   char msg[18+64];
+   char msg[18+PNG_MAX_ERROR_TEXT];
    if (png_ptr == NULL)
      png_warning(png_ptr, warning_message);
    else

pngmem.c

@@ -1,9 +1,9 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.2.13 November 13, 2006
+ * Last changed in libpng 1.2.26 [March 26, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2006 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -456,7 +456,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
    if (size > (png_uint_32)65536L)
    {
 #ifndef PNG_USER_MEM_SUPPORTED
-      if(png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
+      if ((png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
          png_error(png_ptr, "Cannot Allocate > 64K");
       else
 #endif

pngpread.c

@@ -1,9 +1,9 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.20 September 2, 2007
+ * Last changed in libpng 1.2.26 [March 26, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  */
@@ -28,7 +28,7 @@ void PNGAPI
 png_process_data(png_structp png_ptr, png_infop info_ptr,
    png_bytep buffer, png_size_t buffer_size)
 {
-   if(png_ptr == NULL) return;
+   if(png_ptr == NULL || info_ptr == NULL) return;
    png_push_restore_buffer(png_ptr, buffer, buffer_size);
 
    while (png_ptr->buffer_size)
@@ -216,7 +216,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
       png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
    }
 
-   if (!png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
+   if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
      if(png_ptr->mode & PNG_AFTER_IDAT)
         png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
 
@@ -224,6 +224,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
    {
       if (png_ptr->push_length + 4 > png_ptr->buffer_size)
       {
+         if (png_ptr->push_length != 13)
+            png_error(png_ptr, "Invalid IHDR length");
          png_push_save_buffer(png_ptr);
          return;
       }
@@ -273,7 +275,7 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
       }
       png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
    }
-   else if (!png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
+   else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
    {
       /* If we reach an IDAT chunk, this means we have read all of the
        * header chunks, and we can start reading the image (or if this
@@ -678,7 +680,7 @@ png_push_read_IDAT(png_structp png_ptr)
       png_crc_read(png_ptr, png_ptr->chunk_name, 4);
       png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
 
-      if (png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
+      if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
       {
          png_ptr->process_mode = PNG_READ_CHUNK_MODE;
          if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
@@ -1018,32 +1020,37 @@ png_read_push_finish_row(png_structp png_ptr)
          png_ptr->rowbytes + 1);
       do
       {
-         png_ptr->pass++;
-         if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
-             (png_ptr->pass == 3 && png_ptr->width < 3) ||
-             (png_ptr->pass == 5 && png_ptr->width < 2))
-           png_ptr->pass++;
+         int pass;
+         pass = png_ptr->pass;
+         pass++;
+         if ((pass == 1 && png_ptr->width < 5) ||
+             (pass == 3 && png_ptr->width < 3) ||
+             (pass == 5 && png_ptr->width < 2))
+           pass++;
 
-         if (png_ptr->pass > 7)
-            png_ptr->pass--;
-         if (png_ptr->pass >= 7)
-            break;
+         if (pass > 7)
+            pass--;
+         png_ptr->pass = (png_byte) pass;
+         if (pass < 7)
+           {
+             png_ptr->iwidth = (png_ptr->width +
+                png_pass_inc[pass] - 1 -
+                png_pass_start[pass]) /
+                png_pass_inc[pass];
 
-         png_ptr->iwidth = (png_ptr->width +
-            png_pass_inc[png_ptr->pass] - 1 -
-            png_pass_start[png_ptr->pass]) /
-            png_pass_inc[png_ptr->pass];
+             png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
+                png_ptr->iwidth) + 1;
 
-         png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
-            png_ptr->iwidth) + 1;
+             if (png_ptr->transformations & PNG_INTERLACE)
+                break;
 
-         if (png_ptr->transformations & PNG_INTERLACE)
-            break;
-
-         png_ptr->num_rows = (png_ptr->height +
-            png_pass_yinc[png_ptr->pass] - 1 -
-            png_pass_ystart[png_ptr->pass]) /
-            png_pass_yinc[png_ptr->pass];
+             png_ptr->num_rows = (png_ptr->height +
+                png_pass_yinc[pass] - 1 -
+                png_pass_ystart[pass]) /
+                png_pass_yinc[pass];
+           }
+         else
+           break;
 
       } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
    }
@@ -1120,7 +1127,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
       for (text = key; *text; text++)
          /* empty loop */ ;
 
-      if (text != key + png_ptr->current_text_size)
+      if (text < key + png_ptr->current_text_size)
          text++;
 
       text_ptr = (png_textp)png_malloc(png_ptr,
@@ -1215,7 +1222,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
          /* empty loop */ ;
 
       /* zTXt can't have zero text */
-      if (text == key + png_ptr->current_text_size)
+      if (text >= key + png_ptr->current_text_size)
       {
          png_ptr->current_text = NULL;
          png_free(png_ptr, key);
@@ -1412,7 +1419,7 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
       for (lang = key; *lang; lang++)
          /* empty loop */ ;
 
-      if (lang != key + png_ptr->current_text_size)
+      if (lang < key + png_ptr->current_text_size - 3)
          lang++;
 
       comp_flag = *lang++;
@@ -1422,10 +1429,14 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
          /* empty loop */ ;
       lang_key++;        /* skip NUL separator */
 
-      for (text = lang_key; *text; text++)
-         /* empty loop */ ;
+      text=lang_key;
+      if (lang_key < key + png_ptr->current_text_size - 1)
+      {
+        for (; *text; text++)
+           /* empty loop */ ;
+      }
 
-      if (text != key + png_ptr->current_text_size)
+      if (text < key + png_ptr->current_text_size)
          text++;
 
       text_ptr = (png_textp)png_malloc(png_ptr,
@@ -1486,9 +1497,11 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
           length = (png_uint_32)65535L;
       }
 #endif
-      png_strncpy((png_charp)png_ptr->unknown_chunk.name,
-	 (png_charp)png_ptr->chunk_name,
-        png_sizeof((png_charp)png_ptr->chunk_name));
+      png_memcpy((png_charp)png_ptr->unknown_chunk.name,
+                 (png_charp)png_ptr->chunk_name, 
+                 png_sizeof(png_ptr->unknown_chunk.name));
+      png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]='\0';
+
       png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
       png_ptr->unknown_chunk.size = (png_size_t)length;
       png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
@@ -1511,9 +1524,9 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
                &png_ptr->unknown_chunk, 1);
          }
       }
-#else
-      png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+      else
 #endif
+        png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
       png_free(png_ptr, png_ptr->unknown_chunk.data);
       png_ptr->unknown_chunk.data = NULL;
    }

pngread.c

@@ -1,9 +1,9 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.19 August 19, 2007
+ * Last changed in libpng 1.2.25 [February 18, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -89,12 +89,18 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 
    png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
 
-   i=0;
-   do
+   if(user_png_ver)
    {
-     if(user_png_ver[i] != png_libpng_ver[i])
+     i=0;
+     do
+     {
+       if(user_png_ver[i] != png_libpng_ver[i])
+          png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+     } while (png_libpng_ver[i++]);
+   }
+   else
         png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-   } while (png_libpng_ver[i++]);
+   
 
    if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
    {
@@ -318,7 +324,7 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 void PNGAPI
 png_read_info(png_structp png_ptr, png_infop info_ptr)
 {
-   if(png_ptr == NULL) return;
+   if(png_ptr == NULL || info_ptr == NULL) return;
    png_debug(1, "in png_read_info\n");
    /* If we haven't checked all of the PNG signature bytes, do so now. */
    if (png_ptr->sig_bytes < 8)
@@ -415,7 +421,7 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
       /* This should be a binary subdivision search or a hash for
        * matching the chunk name rather than a linear search.
        */
-      if (!png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
+      if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
         if(png_ptr->mode & PNG_AFTER_IDAT)
           png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
 
@@ -1099,13 +1105,22 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    png_structp png_ptr = NULL;
    png_infop info_ptr = NULL, end_info_ptr = NULL;
 #ifdef PNG_USER_MEM_SUPPORTED
-   png_free_ptr free_fn;
-   png_voidp mem_ptr;
+   png_free_ptr free_fn = NULL;
+   png_voidp mem_ptr = NULL;
 #endif
 
    png_debug(1, "in png_destroy_read_struct\n");
    if (png_ptr_ptr != NULL)
+   {
       png_ptr = *png_ptr_ptr;
+   }
+   if (png_ptr == NULL)
+      return;
+
+#ifdef PNG_USER_MEM_SUPPORTED
+   free_fn = png_ptr->free_fn;
+   mem_ptr = png_ptr->mem_ptr;
+#endif
 
    if (info_ptr_ptr != NULL)
       info_ptr = *info_ptr_ptr;
@@ -1113,11 +1128,6 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    if (end_info_ptr_ptr != NULL)
       end_info_ptr = *end_info_ptr_ptr;
 
-#ifdef PNG_USER_MEM_SUPPORTED
-   free_fn = png_ptr->free_fn;
-   mem_ptr = png_ptr->mem_ptr;
-#endif
-
    png_read_destroy(png_ptr, info_ptr, end_info_ptr);
 
    if (info_ptr != NULL)
@@ -1149,16 +1159,13 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
       *end_info_ptr_ptr = NULL;
    }
 
-   if (png_ptr != NULL)
-   {
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
-          (png_voidp)mem_ptr);
+   png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+       (png_voidp)mem_ptr);
 #else
-      png_destroy_struct((png_voidp)png_ptr);
+   png_destroy_struct((png_voidp)png_ptr);
 #endif
-      *png_ptr_ptr = NULL;
-   }
+   *png_ptr_ptr = NULL;
 }
 
 /* free all memory used by the read (old method) */

pngrtran.c

@@ -1,9 +1,9 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * Last changed in libpng 1.2.19 August 19, 2007
+ * Last changed in libpng 1.2.25 [February 18, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -549,7 +549,7 @@ png_set_expand(png_structp png_ptr)
    if(png_ptr == NULL) return;
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
 #ifdef PNG_WARN_UNINITIALIZED_ROW
-   png_ptr->flags &= !(PNG_FLAG_ROW_INIT);
+   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
 #endif
 }
 
@@ -578,7 +578,7 @@ png_set_palette_to_rgb(png_structp png_ptr)
    if(png_ptr == NULL) return;
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
 #ifdef PNG_WARN_UNINITIALIZED_ROW
-   png_ptr->flags &= !(PNG_FLAG_ROW_INIT);
+   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
 #endif
 }
 
@@ -591,7 +591,7 @@ png_set_expand_gray_1_2_4_to_8(png_structp png_ptr)
    if(png_ptr == NULL) return;
    png_ptr->transformations |= PNG_EXPAND;
 #ifdef PNG_WARN_UNINITIALIZED_ROW
-   png_ptr->flags &= !(PNG_FLAG_ROW_INIT);
+   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
 #endif
 }
 #endif
@@ -616,7 +616,7 @@ png_set_tRNS_to_alpha(png_structp png_ptr)
    png_debug(1, "in png_set_tRNS_to_alpha\n");
    png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
 #ifdef PNG_WARN_UNINITIALIZED_ROW
-   png_ptr->flags &= !(PNG_FLAG_ROW_INIT);
+   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
 #endif
 }
 #endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
@@ -628,7 +628,7 @@ png_set_gray_to_rgb(png_structp png_ptr)
    png_debug(1, "in png_set_gray_to_rgb\n");
    png_ptr->transformations |= PNG_GRAY_TO_RGB;
 #ifdef PNG_WARN_UNINITIALIZED_ROW
-   png_ptr->flags &= !(PNG_FLAG_ROW_INIT);
+   png_ptr->flags &= ~PNG_FLAG_ROW_INIT;
 #endif
 }
 #endif
@@ -857,7 +857,7 @@ png_init_read_transformations(png_structp png_ptr)
         k=1; /* partial transparency is present */
     }
     if (k == 0)
-      png_ptr->transformations &= (~PNG_GAMMA);
+      png_ptr->transformations &= ~PNG_GAMMA;
    }
 
    if ((png_ptr->transformations & (PNG_GAMMA | PNG_RGB_TO_GRAY)) &&
@@ -964,6 +964,14 @@ png_init_read_transformations(png_structp png_ptr)
                   palette[i].blue = png_ptr->gamma_table[palette[i].blue];
                }
             }
+	    /* Prevent the transformations being done again, and make sure
+	     * that the now spurious alpha channel is stripped - the code
+	     * has just reduced background composition and gamma correction
+	     * to a simply alpha channel strip.
+	     */
+	    png_ptr->transformations &= ~PNG_BACKGROUND;
+	    png_ptr->transformations &= ~PNG_GAMMA;
+	    png_ptr->transformations |= PNG_STRIP_ALPHA;
          }
          /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
          else
@@ -1038,6 +1046,9 @@ png_init_read_transformations(png_structp png_ptr)
             palette[i].green = png_ptr->gamma_table[palette[i].green];
             palette[i].blue = png_ptr->gamma_table[palette[i].blue];
          }
+
+	 /* Done the gamma correction. */
+	 png_ptr->transformations &= ~PNG_GAMMA;
       }
    }
 #if defined(PNG_READ_BACKGROUND_SUPPORTED)
@@ -1075,6 +1086,10 @@ png_init_read_transformations(png_structp png_ptr)
                png_ptr->trans[i], back.blue);
          }
       }
+
+      /* Handled alpha, still need to strip the channel. */
+      png_ptr->transformations &= ~PNG_BACKGROUND;
+      png_ptr->transformations |= PNG_STRIP_ALPHA;
    }
 #endif /* PNG_READ_BACKGROUND_SUPPORTED */
 
@@ -3867,9 +3882,9 @@ png_do_expand(png_row_infop row_info, png_bytep row,
          }
          else if (row_info->bit_depth == 16)
          {
-            png_byte red_high = (trans_value->red > 8) & 0xff;
-            png_byte green_high = (trans_value->green > 8) & 0xff;
-            png_byte blue_high = (trans_value->blue > 8) & 0xff;
+            png_byte red_high = (trans_value->red >> 8) & 0xff;
+            png_byte green_high = (trans_value->green >> 8) & 0xff;
+            png_byte blue_high = (trans_value->blue >> 8) & 0xff;
             png_byte red_low = trans_value->red & 0xff;
             png_byte green_low = trans_value->green & 0xff;
             png_byte blue_low = trans_value->blue & 0xff;

pngrutil.c

@@ -1,9 +1,9 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * Last changed in libpng 1.2.19 August 19, 2007
+ * Last changed in libpng 1.2.26 [March 26, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -230,7 +230,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
             text_size = (png_size_t)(chunklength - (text - chunkdata) - 1);
             text_size = png_sizeof(msg) > text_size ? text_size :
                png_sizeof(msg);
-            png_memcpy(text + prefix_size, msg, text_size + 1);
+            png_memcpy(text + prefix_size, msg, text_size);
             break;
          }
          if (!png_ptr->zstream.avail_out || ret == Z_STREAM_END)
@@ -1393,7 +1393,7 @@ png_handle_bKGD(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
    {
       png_ptr->background.index = buf[0];
-      if(info_ptr->num_palette)
+      if (info_ptr && info_ptr->num_palette)
       {
           if(buf[0] > info_ptr->num_palette)
           {
@@ -1673,7 +1673,7 @@ png_handle_pCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       buf++; /* Skip the null string terminator from previous parameter. */
 
       png_debug1(3, "Reading pCAL parameter %d\n", i);
-      for (params[i] = buf; *buf != 0x00 && buf <= endptr; buf++)
+      for (params[i] = buf; buf <= endptr && *buf != 0x00; buf++)
          /* Empty loop to move past each parameter string */ ;
 
       /* Make sure we haven't run out of data yet */
@@ -1771,6 +1771,17 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       /* empty loop */ ;
    ep++;
 
+   if (buffer + slength < ep)
+   {
+       png_warning(png_ptr, "Truncated sCAL chunk");
+#if defined(PNG_FIXED_POINT_SUPPORTED) && \
+    !defined(PNG_FLOATING_POINT_SUPPORTED)
+       png_free(png_ptr, swidth);
+#endif
+      png_free(png_ptr, buffer);
+       return;
+   }
+
 #ifdef PNG_FLOATING_POINT_SUPPORTED
    height = png_strtod(png_ptr, ep, &vp);
    if (*vp)
@@ -1781,7 +1792,7 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 #else
 #ifdef PNG_FIXED_POINT_SUPPORTED
    sheight = (png_charp)png_malloc_warn(png_ptr, png_strlen(ep) + 1);
-   if (swidth == NULL)
+   if (sheight == NULL)
      {
        png_warning(png_ptr, "Out of memory while processing sCAL chunk height");
        return;
@@ -1994,7 +2005,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       /* empty loop */ ;
 
    /* zTXt must have some text after the chunkdataword */
-   if (text == chunkdata + slength - 1)
+   if (text >= chunkdata + slength - 2)
    {
       png_warning(png_ptr, "Truncated zTXt chunk");
       png_free(png_ptr, chunkdata);
@@ -2114,6 +2125,13 @@ png_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
       /* empty loop */ ;
    lang_key++;        /* skip NUL separator */
 
+   if (lang_key >= chunkdata + slength)
+   {
+      png_warning(png_ptr, "Truncated iTXt chunk");
+      png_free(png_ptr, chunkdata);
+      return;
+   }
+
    for (text = lang_key; *text; text++)
       /* empty loop */ ;
    text++;        /* skip NUL separator */
@@ -2205,9 +2223,10 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
            length = (png_uint_32)65535L;
        }
 #endif
-       png_strncpy((png_charp)png_ptr->unknown_chunk.name,
-	 (png_charp)png_ptr->chunk_name,
-         png_sizeof((png_charp)png_ptr->chunk_name));
+       png_memcpy((png_charp)png_ptr->unknown_chunk.name,
+                  (png_charp)png_ptr->chunk_name, 
+                  png_sizeof(png_ptr->unknown_chunk.name));
+       png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
        png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
        png_ptr->unknown_chunk.size = (png_size_t)length;
        png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
@@ -2230,9 +2249,9 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
                &png_ptr->unknown_chunk, 1);
           }
        }
-#else
-       png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
+       else
 #endif
+         png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
        png_free(png_ptr, png_ptr->unknown_chunk.data);
        png_ptr->unknown_chunk.data = NULL;
    }
@@ -2832,6 +2851,7 @@ void /* PRIVATE */
 png_read_finish_row(png_structp png_ptr)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
    /* start of interlace block */
@@ -2845,6 +2865,7 @@ png_read_finish_row(png_structp png_ptr)
 
    /* offset to next interlace block in the y direction */
    PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 #endif
 
    png_debug(1, "in png_read_finish_row\n");
@@ -2852,6 +2873,7 @@ png_read_finish_row(png_structp png_ptr)
    if (png_ptr->row_number < png_ptr->num_rows)
       return;
 
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    if (png_ptr->interlaced)
    {
       png_ptr->row_number = 0;
@@ -2886,6 +2908,7 @@ png_read_finish_row(png_structp png_ptr)
       if (png_ptr->pass < 7)
          return;
    }
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
 
    if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
    {
@@ -2911,7 +2934,7 @@ png_read_finish_row(png_structp png_ptr)
                png_ptr->idat_size = png_get_uint_31(png_ptr, chunk_length);
                png_reset_crc(png_ptr);
                png_crc_read(png_ptr, png_ptr->chunk_name, 4);
-               if (png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
+               if (png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
                   png_error(png_ptr, "Not enough image data");
 
             }
@@ -2960,6 +2983,7 @@ void /* PRIVATE */
 png_read_start_row(png_structp png_ptr)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
    /* start of interlace block */
@@ -2973,6 +2997,7 @@ png_read_start_row(png_structp png_ptr)
 
    /* offset to next interlace block in the y direction */
    PNG_CONST int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
+#endif
 #endif
 
    int max_pixel_depth;
@@ -2981,6 +3006,7 @@ png_read_start_row(png_structp png_ptr)
    png_debug(1, "in png_read_start_row\n");
    png_ptr->zstream.avail_in = 0;
    png_init_read_transformations(png_ptr);
+#ifdef PNG_READ_INTERLACING_SUPPORTED
    if (png_ptr->interlaced)
    {
       if (!(png_ptr->transformations & PNG_INTERLACE))
@@ -3001,6 +3027,7 @@ png_read_start_row(png_structp png_ptr)
             png_error(png_ptr, "Rowbytes overflow in png_read_start_row");
    }
    else
+#endif /* PNG_READ_INTERLACING_SUPPORTED */
    {
       png_ptr->num_rows = png_ptr->height;
       png_ptr->iwidth = png_ptr->width;
@@ -3119,8 +3146,15 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
    if (row_bytes > (png_uint_32)65536L)
       png_error(png_ptr, "This image requires a row greater than 64KB");
 #endif
-   png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
-   png_ptr->row_buf = png_ptr->big_row_buf+32;
+
+   if(row_bytes + 64 > png_ptr->old_big_row_buf_size)
+   {
+     if (png_ptr->big_row_buf)
+        png_free(png_ptr,png_ptr->big_row_buf);
+     png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes+64);
+     png_ptr->row_buf = png_ptr->big_row_buf+32;
+     png_ptr->old_big_row_buf_size = row_bytes+64;
+   }
 
 #ifdef PNG_MAX_MALLOC_64K
    if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)
@@ -3128,8 +3162,15 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
 #endif
    if ((png_uint_32)png_ptr->rowbytes > (png_uint_32)(PNG_SIZE_MAX - 1))
       png_error(png_ptr, "Row has too many bytes to allocate in memory.");
-   png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
-      png_ptr->rowbytes + 1));
+
+   if(png_ptr->rowbytes+1 > png_ptr->old_prev_row_size)
+   {
+     if (png_ptr->prev_row)
+        png_free(png_ptr,png_ptr->prev_row);
+     png_ptr->prev_row = (png_bytep)png_malloc(png_ptr, (png_uint_32)(
+        png_ptr->rowbytes + 1));
+     png_ptr->old_prev_row_size = png_ptr->rowbytes+1;
+   }
 
    png_memset_check(png_ptr, png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
 

pngset.c

@@ -1,9 +1,9 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.17 May 15, 2007
+ * Last changed in libpng 1.2.25 [February 18, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  *
@@ -41,7 +41,13 @@ png_set_cHRM(png_structp png_ptr, png_infop info_ptr,
    png_debug1(1, "in %s storage function\n", "cHRM");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
-
+   if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
+       blue_x || blue_y))
+   {
+      png_warning(png_ptr,
+        "Ignoring attempt to set all-zero chromaticity values");
+      return;
+   }
    if (white_x < 0.0 || white_y < 0.0 ||
          red_x < 0.0 ||   red_y < 0.0 ||
        green_x < 0.0 || green_y < 0.0 ||
@@ -93,6 +99,13 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
+   if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
+       blue_x || blue_y))
+   {
+      png_warning(png_ptr,
+        "Ignoring attempt to set all-zero chromaticity values");
+      return;
+   }
    if (white_x < 0 || white_y < 0 ||
          red_x < 0 ||   red_y < 0 ||
        green_x < 0 || green_y < 0 ||
@@ -102,25 +115,14 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
         "Ignoring attempt to set negative chromaticity value");
       return;
    }
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-   if (white_x > (double) PNG_UINT_31_MAX ||
-       white_y > (double) PNG_UINT_31_MAX ||
-         red_x > (double) PNG_UINT_31_MAX ||
-         red_y > (double) PNG_UINT_31_MAX ||
-       green_x > (double) PNG_UINT_31_MAX ||
-       green_y > (double) PNG_UINT_31_MAX ||
-        blue_x > (double) PNG_UINT_31_MAX ||
-        blue_y > (double) PNG_UINT_31_MAX)
-#else
-   if (white_x > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-       white_y > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-         red_x > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-         red_y > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-       green_x > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-       green_y > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-        blue_x > (png_fixed_point) PNG_UINT_31_MAX/100000L ||
-        blue_y > (png_fixed_point) PNG_UINT_31_MAX/100000L)
-#endif
+   if (white_x > (png_fixed_point) PNG_UINT_31_MAX ||
+       white_y > (png_fixed_point) PNG_UINT_31_MAX ||
+         red_x > (png_fixed_point) PNG_UINT_31_MAX ||
+         red_y > (png_fixed_point) PNG_UINT_31_MAX ||
+       green_x > (png_fixed_point) PNG_UINT_31_MAX ||
+       green_y > (png_fixed_point) PNG_UINT_31_MAX ||
+        blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
+        blue_y > (png_fixed_point) PNG_UINT_31_MAX )
    {
       png_warning(png_ptr,
         "Ignoring attempt to set chromaticity value exceeding 21474.83");
@@ -222,7 +224,7 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
    png_debug1(1, "in %s storage function\n", "hIST");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
-   if (info_ptr->num_palette <= 0 || info_ptr->num_palette
+   if (info_ptr->num_palette == 0 || info_ptr->num_palette
        > PNG_MAX_PALETTE_LENGTH)
    {
        png_warning(png_ptr,
@@ -486,6 +488,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
    {
       png_warning(png_ptr,
        "Memory allocation failed while processing sCAL.");
+      return;
    }
    png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
 
@@ -497,9 +500,9 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
       png_free (png_ptr, info_ptr->scal_s_width);
       png_warning(png_ptr,
        "Memory allocation failed while processing sCAL.");
+      return;
    }
    png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
-
    info_ptr->valid |= PNG_INFO_sCAL;
 #ifdef PNG_FREE_ME_SUPPORTED
    info_ptr->free_me |= PNG_FREE_SCAL;
@@ -679,18 +682,20 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
 {
    png_charp new_iccp_name;
    png_charp new_iccp_profile;
+   png_uint_32 length;
 
    png_debug1(1, "in %s storage function\n", "iCCP");
    if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
       return;
 
-   new_iccp_name = (png_charp)png_malloc_warn(png_ptr, png_strlen(name)+1);
+   length = png_strlen(name)+1;
+   new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
    if (new_iccp_name == NULL)
    {
       png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
       return;
    }
-   png_strncpy(new_iccp_name, name, png_sizeof(new_iccp_name));
+   png_memcpy(new_iccp_name, name, length);
    new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen);
    if (new_iccp_profile == NULL)
    {
@@ -971,28 +976,29 @@ png_set_sPLT(png_structp png_ptr,
     {
         png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
         png_sPLT_tp from = entries + i;
+        png_uint_32 length;
 
-        to->name = (png_charp)png_malloc_warn(png_ptr,
-          png_strlen(from->name) + 1);
+        length = png_strlen(from->name) + 1;
+        to->name = (png_charp)png_malloc_warn(png_ptr, length);
         if (to->name == NULL)
         {
            png_warning(png_ptr,
              "Out of memory while processing sPLT chunk");
+           continue;
         }
-        /* TODO: use png_malloc_warn */
-        png_strncpy(to->name, from->name, png_strlen(from->name));
+        png_memcpy(to->name, from->name, length);
         to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
             from->nentries * png_sizeof(png_sPLT_entry));
-        /* TODO: use png_malloc_warn */
-        png_memcpy(to->entries, from->entries,
-            from->nentries * png_sizeof(png_sPLT_entry));
         if (to->entries == NULL)
         {
            png_warning(png_ptr,
              "Out of memory while processing sPLT chunk");
            png_free(png_ptr,to->name);
            to->name = NULL;
+           continue;
         }
+        png_memcpy(to->entries, from->entries,
+            from->nentries * png_sizeof(png_sPLT_entry));
         to->nentries = from->nentries;
         to->depth = from->depth;
     }
@@ -1037,7 +1043,11 @@ png_set_unknown_chunks(png_structp png_ptr,
         png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
         png_unknown_chunkp from = unknowns + i;
 
-        png_strncpy((png_charp)to->name, (png_charp)from->name, 5);
+        png_memcpy((png_charp)to->name, 
+                   (png_charp)from->name, 
+                   png_sizeof(from->name));
+        to->name[png_sizeof(to->name)-1] = '\0';
+
         to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
         if (to->data == NULL)
         {
@@ -1082,7 +1092,7 @@ png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted)
    if (png_ptr == NULL)
       return;
    png_ptr->mng_features_permitted = (png_byte)
-     ((png_ptr->mng_features_permitted & (~(PNG_FLAG_MNG_EMPTY_PLTE))) |
+     ((png_ptr->mng_features_permitted & (~PNG_FLAG_MNG_EMPTY_PLTE)) |
      ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE)));
 }
 #endif
@@ -1196,7 +1206,7 @@ void PNGAPI
 png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
 {
    if (png_ptr && info_ptr)
-      info_ptr->valid &= ~(mask);
+      info_ptr->valid &= ~mask;
 }
 
 

pngtest.c

@@ -1,9 +1,9 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.6 - August 15, 2004
+ * Last changed in libpng 1.2.23 - [November 6, 2007]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2004 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2007 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.)
  *
@@ -82,8 +82,9 @@ static float t_start, t_stop, t_decode, t_encode, t_misc;
 #endif
 
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
+#define PNG_tIME_STRING_LENGTH 30
 static int tIME_chunk_present=0;
-static char tIME_string[30] = "no tIME chunk present in file";
+static char tIME_string[PNG_tIME_STRING_LENGTH] = "no tIME chunk present in file";
 #endif
 
 static int verbose = 0;
@@ -1002,11 +1003,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       {
          png_set_tIME(write_ptr, write_info_ptr, mod_time);
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
-         /* we have to use png_strncpy instead of "=" because the string
+         /* we have to use png_memcpy instead of "=" because the string
             pointed to by png_convert_to_rfc1123() gets free'ed before
             we use it */
-         png_strncpy(tIME_string,png_convert_to_rfc1123(read_ptr,
-            mod_time),30);
+         png_memcpy(tIME_string,
+                    png_convert_to_rfc1123(read_ptr, mod_time), 
+                    png_sizeof(tIME_string));
+         tIME_string[png_sizeof(tIME_string)-1] = '\0';
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1143,11 +1146,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       {
          png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
-         /* we have to use png_strncpy instead of "=" because the string
+         /* we have to use png_memcpy instead of "=" because the string
             pointed to by png_convert_to_rfc1123() gets free'ed before
             we use it */
-         png_strncpy(tIME_string,png_convert_to_rfc1123(read_ptr,
-            mod_time),30);
+         png_memcpy(tIME_string,
+                    png_convert_to_rfc1123(read_ptr, mod_time),
+                    png_sizeof(tIME_string));
+         tIME_string[png_sizeof(tIME_string)-1] = '\0';
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1548,4 +1553,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_20rc5 your_png_h_is_not_version_1_2_20rc5;
+typedef version_1_2_26rc01 your_png_h_is_not_version_1_2_26rc01;

pngwrite.c

@@ -1,9 +1,9 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.15 January 5, 2007
+ * Last changed in libpng 1.2.25 [February 18, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  */
@@ -482,12 +482,15 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #endif /* PNG_USER_MEM_SUPPORTED */
    png_set_error_fn(png_ptr, error_ptr, error_fn, warn_fn);
 
-   i=0;
-   do
+   if(user_png_ver)
    {
-     if(user_png_ver[i] != png_libpng_ver[i])
-        png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-   } while (png_libpng_ver[i++]);
+     i=0;
+     do
+     {
+       if(user_png_ver[i] != png_libpng_ver[i])
+          png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
+     } while (png_libpng_ver[i++]);
+   }
 
    if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
    {
@@ -1000,21 +1003,32 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
 #endif
    }
 
+#ifdef PNG_USER_MEM_SUPPORTED
+   if (png_ptr != NULL)
+   {
+      free_fn = png_ptr->free_fn;
+      mem_ptr = png_ptr->mem_ptr;
+   }
+#endif
+
    if (info_ptr_ptr != NULL)
       info_ptr = *info_ptr_ptr;
 
    if (info_ptr != NULL)
    {
-      png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+      if (png_ptr != NULL)
+      {
+        png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
 
 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-      if (png_ptr->num_chunk_list)
-      {
-         png_free(png_ptr, png_ptr->chunk_list);
-         png_ptr->chunk_list=NULL;
-         png_ptr->num_chunk_list=0;
-      }
+        if (png_ptr->num_chunk_list)
+        {
+           png_free(png_ptr, png_ptr->chunk_list);
+           png_ptr->chunk_list=NULL;
+           png_ptr->num_chunk_list=0;
+        }
 #endif
+      }
 
 #ifdef PNG_USER_MEM_SUPPORTED
       png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
@@ -1060,11 +1074,13 @@ png_write_destroy(png_structp png_ptr)
    /* free our memory.  png_free checks NULL for us. */
    png_free(png_ptr, png_ptr->zbuf);
    png_free(png_ptr, png_ptr->row_buf);
+#ifndef PNG_NO_WRITE_FILTERING
    png_free(png_ptr, png_ptr->prev_row);
    png_free(png_ptr, png_ptr->sub_row);
    png_free(png_ptr, png_ptr->up_row);
    png_free(png_ptr, png_ptr->avg_row);
    png_free(png_ptr, png_ptr->paeth_row);
+#endif
 
 #if defined(PNG_TIME_RFC1123_SUPPORTED)
    png_free(png_ptr, png_ptr->time_buffer);

pngwutil.c

@@ -1,9 +1,9 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.19 August 19, 2007
+ * Last changed in libpng 1.2.26 [March 26, 2008]
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2008 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.)
  */
@@ -380,6 +380,8 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
 #ifdef PNG_USE_LOCAL_ARRAYS
    PNG_IHDR;
 #endif
+   int ret;
+
    png_byte buf[13]; /* buffer to store the IHDR info */
 
    png_debug(1, "in png_write_IHDR\n");
@@ -494,7 +496,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
    buf[12] = (png_byte)interlace_type;
 
    /* write the chunk */
-   png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13);
+   png_write_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
 
    /* initialize zlib with PNG info */
    png_ptr->zstream.zalloc = png_zalloc;
@@ -523,10 +525,19 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
       png_ptr->zlib_window_bits = 15;
    if (!(png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_METHOD))
       png_ptr->zlib_method = 8;
-   if (deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
-      png_ptr->zlib_method, png_ptr->zlib_window_bits,
-      png_ptr->zlib_mem_level, png_ptr->zlib_strategy) != Z_OK)
-       png_error(png_ptr, "zlib failed to initialize compressor");
+   ret = deflateInit2(&png_ptr->zstream, png_ptr->zlib_level,
+         png_ptr->zlib_method, png_ptr->zlib_window_bits,
+         png_ptr->zlib_mem_level, png_ptr->zlib_strategy);
+   if (ret != Z_OK)
+   {
+      if (ret == Z_VERSION_ERROR) png_error(png_ptr,
+          "zlib failed to initialize compressor -- version error");
+      if (ret == Z_STREAM_ERROR) png_error(png_ptr,
+           "zlib failed to initialize compressor -- stream error");
+      if (ret == Z_MEM_ERROR) png_error(png_ptr,
+           "zlib failed to initialize compressor -- mem error");
+      png_error(png_ptr, "zlib failed to initialize compressor");
+   }
    png_ptr->zstream.next_out = png_ptr->zbuf;
    png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
    /* libpng is not interested in zstream.data_type */
@@ -650,7 +661,7 @@ png_write_IDAT(png_structp png_ptr, png_bytep data, png_size_t length)
             "Invalid zlib compression method or flags in IDAT");
    }
 
-   png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length);
+   png_write_chunk(png_ptr, png_IDAT, data, length);
    png_ptr->mode |= PNG_HAVE_IDAT;
 }
 
@@ -662,7 +673,7 @@ png_write_IEND(png_structp png_ptr)
    PNG_IEND;
 #endif
    png_debug(1, "in png_write_IEND\n");
-   png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL,
+   png_write_chunk(png_ptr, png_IEND, png_bytep_NULL,
      (png_size_t)0);
    png_ptr->mode |= PNG_HAVE_IEND;
 }
@@ -683,7 +694,7 @@ png_write_gAMA(png_structp png_ptr, double file_gamma)
    /* file_gamma is saved in 1/100,000ths */
    igamma = (png_uint_32)(file_gamma * 100000.0 + 0.5);
    png_save_uint_32(buf, igamma);
-   png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
+   png_write_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
 }
 #endif
 #ifdef PNG_FIXED_POINT_SUPPORTED
@@ -698,7 +709,7 @@ png_write_gAMA_fixed(png_structp png_ptr, png_fixed_point file_gamma)
    png_debug(1, "in png_write_gAMA\n");
    /* file_gamma is saved in 1/100,000ths */
    png_save_uint_32(buf, (png_uint_32)file_gamma);
-   png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
+   png_write_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
 }
 #endif
 #endif
@@ -718,7 +729,7 @@ png_write_sRGB(png_structp png_ptr, int srgb_intent)
          png_warning(png_ptr,
             "Invalid sRGB rendering intent specified");
    buf[0]=(png_byte)srgb_intent;
-   png_write_chunk(png_ptr, (png_bytep)png_sRGB, buf, (png_size_t)1);
+   png_write_chunk(png_ptr, png_sRGB, buf, (png_size_t)1);
 }
 #endif
 
@@ -931,7 +942,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
       buf[size++] = sbit->alpha;
    }
 
-   png_write_chunk(png_ptr, (png_bytep)png_sBIT, buf, size);
+   png_write_chunk(png_ptr, png_sBIT, buf, size);
 }
 #endif
 
@@ -995,7 +1006,7 @@ png_write_cHRM(png_structp png_ptr, double white_x, double white_y,
    itemp = (png_uint_32)(blue_y * 100000.0 + 0.5);
    png_save_uint_32(buf + 28, itemp);
 
-   png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
+   png_write_chunk(png_ptr, png_cHRM, buf, (png_size_t)32);
 }
 #endif
 #ifdef PNG_FIXED_POINT_SUPPORTED
@@ -1047,7 +1058,7 @@ png_write_cHRM_fixed(png_structp png_ptr, png_fixed_point white_x,
    png_save_uint_32(buf + 24, (png_uint_32)blue_x);
    png_save_uint_32(buf + 28, (png_uint_32)blue_y);
 
-   png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
+   png_write_chunk(png_ptr, png_cHRM, buf, (png_size_t)32);
 }
 #endif
 #endif
@@ -1072,7 +1083,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
          return;
       }
       /* write the chunk out as it is */
-      png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans, (png_size_t)num_trans);
+      png_write_chunk(png_ptr, png_tRNS, trans, (png_size_t)num_trans);
    }
    else if (color_type == PNG_COLOR_TYPE_GRAY)
    {
@@ -1084,7 +1095,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
          return;
       }
       png_save_uint_16(buf, tran->gray);
-      png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)2);
+      png_write_chunk(png_ptr, png_tRNS, buf, (png_size_t)2);
    }
    else if (color_type == PNG_COLOR_TYPE_RGB)
    {
@@ -1098,7 +1109,7 @@ png_write_tRNS(png_structp png_ptr, png_bytep trans, png_color_16p tran,
               "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
             return;
          }
-      png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)6);
+      png_write_chunk(png_ptr, png_tRNS, buf, (png_size_t)6);
    }
    else
    {
@@ -1131,7 +1142,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
          return;
       }
       buf[0] = back->index;
-      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)1);
+      png_write_chunk(png_ptr, png_bKGD, buf, (png_size_t)1);
    }
    else if (color_type & PNG_COLOR_MASK_COLOR)
    {
@@ -1144,7 +1155,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
               "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
             return;
          }
-      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)6);
+      png_write_chunk(png_ptr, png_bKGD, buf, (png_size_t)6);
    }
    else
    {
@@ -1155,7 +1166,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
          return;
       }
       png_save_uint_16(buf, back->gray);
-      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)2);
+      png_write_chunk(png_ptr, png_bKGD, buf, (png_size_t)2);
    }
 }
 #endif
@@ -1346,7 +1357,7 @@ png_write_tEXt(png_structp png_ptr, png_charp key, png_charp text,
       text_len = png_strlen(text);
 
    /* make sure we include the 0 after the key */
-   png_write_chunk_start(png_ptr, (png_bytep)png_tEXt, (png_uint_32)key_len+text_len+1);
+   png_write_chunk_start(png_ptr, png_tEXt, (png_uint_32)key_len+text_len+1);
    /*
     * We leave it to the application to meet PNG-1.0 requirements on the
     * contents of the text.  PNG-1.0 through PNG-1.2 discourage the use of
@@ -1404,7 +1415,7 @@ png_write_zTXt(png_structp png_ptr, png_charp key, png_charp text,
        &comp);
 
    /* write start of chunk */
-   png_write_chunk_start(png_ptr, (png_bytep)png_zTXt, (png_uint_32)
+   png_write_chunk_start(png_ptr, png_zTXt, (png_uint_32)
       (key_len+text_len+2));
    /* write key */
    png_write_chunk_data(png_ptr, (png_bytep)new_key, key_len + 1);
@@ -1472,7 +1483,7 @@ png_write_iTXt(png_structp png_ptr, int compression, png_charp key,
    /* make sure we include the compression flag, the compression byte,
     * and the NULs after the key, lang, and lang_key parts */
 
-   png_write_chunk_start(png_ptr, (png_bytep)png_iTXt,
+   png_write_chunk_start(png_ptr, png_iTXt,
           (png_uint_32)(
         5 /* comp byte, comp flag, terminators for key, lang and lang_key */
         + key_len

projects/visualc6/libpng.dsp

@@ -50,7 +50,7 @@ CFG=libpng - Win32 DLL Release
 CPP=cl.exe
 # ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "PNG_NO_MMX_CODE" /D "ZLIB_DLL" /D "_CRT_SECURE_NO_WARNINGS /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "PNG_NO_MMX_CODE" /D "ZLIB_DLL" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -81,7 +81,7 @@ LINK32=link.exe
 CPP=cl.exe
 # ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "PNG_NO_MMX_CODE" /D PNG_DEBUG=1 /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "_CRT_SECURE_NO_WARNINGS /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "PNG_NO_MMX_CODE" /D PNG_DEBUG=1 /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
@@ -112,7 +112,7 @@ LINK32=link.exe
 CPP=cl.exe
 # ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -143,7 +143,7 @@ LINK32=link.exe
 CPP=cl.exe
 # ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
@@ -174,7 +174,7 @@ LINK32=link.exe
 CPP=cl.exe
 # ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D PNGAPI=__stdcall /D "PNG_NO_MODULEDEF" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /D PNGAPI=__stdcall /D "PNG_NO_MODULEDEF" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -210,7 +210,7 @@ PostBuild_Cmds=echo    Deleting $(targetname) import library and export file (No
 CPP=cl.exe
 # ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "PNG_NO_MMX_CODE" /D "WIN32" /D "NDEBUG" /D "_CRT_SECURE_NO_WARNINGS /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "PNG_NO_MMX_CODE" /D "WIN32" /D "NDEBUG" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
@@ -237,7 +237,7 @@ LIB32=link.exe -lib
 CPP=cl.exe
 # ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "PNG_NO_MMX_CODE" /D PNG_DEBUG=1 /D "_CRT_SECURE_NO_WARNINGS /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D "PNG_NO_MMX_CODE" /D PNG_DEBUG=1 /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
@@ -264,7 +264,7 @@ LIB32=link.exe -lib
 CPP=cl.exe
 # ADD BASE CPP /nologo /MD /W3 /O2 /D "WIN32" /D "NDEBUG" /FD /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS /FD /c
+# ADD CPP /nologo /MD /W3 /O2 /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "NDEBUG" /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
 # ADD BASE RSC /l 0x409 /d "NDEBUG"
@@ -291,7 +291,7 @@ LIB32=link.exe -lib
 CPP=cl.exe
 # ADD BASE CPP /nologo /MDd /W3 /Gm /ZI /Od /D "WIN32" /D "_DEBUG" /FD /GZ /c
 # SUBTRACT BASE CPP /YX /Yc /Yu
-# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS /FD /GZ /c
+# ADD CPP /nologo /MDd /W3 /Gm /ZI /Od /I "..\.." /I "..\..\..\zlib" /D "WIN32" /D "_DEBUG" /D "DEBUG" /D PNG_DEBUG=1 /D "PNG_USE_PNGVCRD" /D "PNG_LIBPNG_SPECIALBUILD" /D "_CRT_SECURE_NO_WARNINGS" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
@@ -365,41 +365,6 @@ SOURCE=..\..\pngtrans.c
 # End Source File
 # Begin Source File
 
-SOURCE=..\..\pngvcrd.c
-
-!IF  "$(CFG)" == "libpng - Win32 DLL Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB Release"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB Debug"
-
-# PROP Exclude_From_Build 1
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Release"
-
-!ELSEIF  "$(CFG)" == "libpng - Win32 LIB ASM Debug"
-
-!ENDIF
-
-# End Source File
-# Begin Source File
-
 SOURCE=..\..\scripts\pngw32.def
 
 !IF  "$(CFG)" == "libpng - Win32 DLL Release"

projects/visualc71/libpng.vcproj

@@ -43,7 +43,7 @@
 				Name="VCPreLinkEventTool"/>
 			<Tool
 				Name="VCResourceCompilerTool"
-				PreprocessorDefinitions="NDEBUG";_CRT_SECURE_NO_WARNINGS
+				PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -563,39 +563,6 @@
 			<File
 				RelativePath="..\..\pngtrans.c">
 			</File>
-			<File
-				RelativePath="..\..\pngvcrd.c">
-				<FileConfiguration
-					Name="DLL Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="DLL VB|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB Release|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-				<FileConfiguration
-					Name="LIB Debug|Win32"
-					ExcludedFromBuild="TRUE">
-					<Tool
-						Name="VCCLCompilerTool"/>
-				</FileConfiguration>
-			</File>
 			<File
 				RelativePath="..\..\scripts\pngw32.def">
 				<FileConfiguration

scripts/CMakeLists.txt

@@ -6,7 +6,7 @@ project(PNG)
 
 set(PNGLIB_MAJOR 1)
 set(PNGLIB_MINOR 2)
-set(PNGLIB_RELEASE 20)
+set(PNGLIB_RELEASE 26)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
@@ -97,6 +97,10 @@ set(pngtest_sources
        pngtest.c
 )
 # SOME NEEDED DEFINITIONS
+if(MSVC)
+  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
+endif(MSVC)
+
 add_definitions(-DZLIB_DLL)
 
 add_definitions(-DLIBPNG_NO_MMX)
@@ -165,7 +169,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
 
 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.20rc5
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.26rc01
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)

scripts/libpng-config-head.in

@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.2.20rc5
+version=1.2.26rc01
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc-configure.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.20rc5
+Version: 1.2.26rc01
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir} @LIBPNG_NO_MMX@

scripts/libpng.pc.in

@@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.20rc5
+Version: 1.2.26rc01
 Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}

scripts/makefile.32sunu

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -88,7 +88,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.64sunu

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -88,7 +88,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.aix

@@ -20,7 +20,7 @@ LN_SF = ln -f -s
 
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local

scripts/makefile.beos

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -84,7 +84,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.cygwin

@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 CYGDLL = 12
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -134,8 +134,11 @@ buildsetup-tell:
 libpng.pc: scripts/libpng.pc.in
 	@echo -e Making pkg-config file for this libpng installation..'\n' \
            using PREFIX=\"$(prefix)\"'\n'
-	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
-	   sed -e s/-lm// > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -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 \

scripts/makefile.darwin

@@ -19,7 +19,7 @@ ZLIBINC=../zlib
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -80,8 +80,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
-	   sed -e s/-lm// > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.dec

@@ -5,7 +5,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -68,7 +68,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.elf

@@ -12,7 +12,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -99,7 +99,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng.syms: png.h pngconf.h
 	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\

scripts/makefile.gcmmx

@@ -14,7 +14,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -112,7 +112,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.hp64

@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -86,7 +86,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.hpgcc

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -96,7 +96,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.hpux

@@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -83,7 +83,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.linux

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -91,7 +91,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.mingw

@@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
 LIBNAME = libpng12
 PNGMAJ = 0
 MINGDLL = 12
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
@@ -130,8 +130,12 @@ buildsetup-tell:
 libpng.pc: scripts/libpng.pc.in
 	@echo -e Making pkg-config file for this libpng installation..'\n' \
            using PREFIX=\"$(prefix)\"'\n'
-	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
-	   sed -e s/-lm// > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -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 \

scripts/makefile.ne12bsd

@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.20rc5
+SHLIB_MINOR=	1.2.26rc01
 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

scripts/makefile.netbsd

@@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.2.20rc5
+SHLIB_MINOR=	1.2.26rc01
 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

scripts/makefile.nommx

@@ -7,7 +7,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -92,8 +92,13 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s!@PREFIX@!$(prefix)! \
-	| sed -e "s!Cflags: !Cflags: -DPNG_NO_MMX_CODE !"> libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! \
+	-e s!Cflags: !Cflags:\ -DPNG_NO_MMX_CODE!> libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.openbsd

@@ -8,7 +8,7 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.2.20rc5
+SHLIB_MINOR=	1.2.26rc01
 
 LIB=	png
 SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \

scripts/makefile.sco

@@ -9,7 +9,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -79,7 +79,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.sggcc

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -86,7 +86,11 @@ libpng.a: $(OBJS)
 shared: $(LIBSOVER)
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.sgi

@@ -6,7 +6,7 @@
 # Library name:
 LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -89,7 +89,11 @@ libpng.a: $(OBJS)
 shared: $(LIBSOVER)
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.so9

@@ -8,7 +8,7 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 LIBNAME = libpng12
 
@@ -89,7 +89,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.solaris

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -86,7 +86,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/makefile.solaris-x86

@@ -8,7 +8,7 @@
 # Library name:
 LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.2.20rc5
+PNGMIN = 1.2.26rc01
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -85,7 +85,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 libpng.pc:
-	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
+	-e s!@exec_prefix@!$(exec_prefix)! \
+	-e s!@libdir@!$(LIBPATH)! \
+	-e s!@includedir@!$(INCPATH)! \
+	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \

scripts/pngos2.def

@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.20rc5
+; Version 1.2.26rc01
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -224,7 +224,6 @@ EXPORTS
   png_set_expand_gray_1_2_4_to_8
 
 ; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
-  png_libpng_ver
   png_pass_start
   png_pass_inc
   png_pass_ystart

scripts/pngw32.def

@@ -5,7 +5,7 @@
 LIBRARY
 
 EXPORTS
-;Version 1.2.20rc5
+;Version 1.2.26rc01
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
@@ -180,7 +180,9 @@ EXPORTS
   png_write_init_2    @167
   png_access_version_number  @168
 ; png_sig_bytes    @169
-  png_libpng_ver    @170
+; Removed from version 1.2.20
+; png_libpng_ver    @170
+;
   png_init_io    @171
   png_convert_to_rfc1123     @172
   png_set_invalid  @173