Imported from libpng-1.2.20beta02.tar

ANNOUNCE

@@ -1,67 +1,51 @@
 
-Libpng 1.0.31 - February 18, 2008
+Libpng 1.2.20beta02 - August 20, 2007
 
-This is a public release of libpng, intended for use in production codes.
+This is not intended to be a public release.  It will be replaced
+within a few weeks by a public version or by another test version.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.0.31.tar.gz
-   libpng-1.0.31.tar.lzma
-     (Get the lzma codec from <http://tukaani.org/lzma>).
-   libpng-1.0.31.tar.bz2
+   libpng-1.2.20beta02.tar.gz
+   libpng-1.2.20beta02.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.0.31-no-config.tar.gz
-   libpng-1.0.31-no-config.tar.lzma
-   libpng-1.0.31-no-config.tar.bz2
+   libpng-1.2.20beta02-no-config.tar.gz
+   libpng-1.2.20beta02-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng1031.zip
-   lpng1031.7z
-   lpng1031.tar.bz2
+   lp1220b02.zip
+   lp1220b02.tar.bz2
 
 Project files
 
-   libpng-1.0.31-project-netware.zip
-   libpng-1.0.31-project-wince.zip
+   libpng-1.2.20beta02-project-netware.zip
+   libpng-1.2.20beta02-project-wince.zip
 
 Other information:
 
-   libpng-1.0.31-README.txt
-   libpng-1.0.31-KNOWNBUGS.txt
-   libpng-1.0.31-LICENSE.txt
-   libpng-1.0.31-Y2K-compliance.txt
+   libpng-1.2.20beta02-README.txt
+   libpng-1.2.20beta02-KNOWNBUGS.txt
+   libpng-1.2.20beta02-LICENSE.txt
+   libpng-1.2.20beta02-Y2K-compliance.txt
 
-Changes since the last public release (1.0.30):
+Changes since the last public release (1.2.19):
 
-version 1.0.31 [February 18, 2008]
-
-  Fixed bug with unknown chunk handling, introduced in version 1.2.17
-  Prevent gamma from being applied twice.
-  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().
-  Fix overflow of "msg" in png_decompres_chunk().
-  Added libpng-1.2.25.tar.lzma to distribution.  Get the lzma codec
-    from <http://tukaani.org/lzma>.
-  Added lpng1225.7z to distribution.  Get the 7-zip decoder from
-    from <http://www.7-zip.org>.
-  Fixed some broken links in the README file.
-  Refactored png_read_push_finish_row() slightly, 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 1.0.28 and 1.2.20 [August 20, 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.
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
+
 (subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net

CHANGES

@@ -977,15 +977,21 @@ version 1.2.0beta1 [May 6, 2001]
   Bumped DLLNUM to 2.
   Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
     by default.
+  Added runtime selection of MMX features.
+  Added png_set_strip_error_numbers function and related macros.
 version 1.2.0beta2 [May 7, 2001]
   Finished merging 1.2.0beta1 with version 1.0.11
   Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
 version 1.2.0beta3 [May 17, 2001]
+  Enabled user memory function by default.
   Modified png_create_struct so it passes user mem_ptr to user memory allocator.
   Increased png_mng_features flag from png_byte to png_uint_32.
+  Bumped shared-library (so-number) and dll-number to 3.
 version 1.2.0beta4 [June 23, 2001]
   Check for missing profile length field in iCCP chunk and free chunk_data
      in case of truncated iCCP chunk.
+  Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
+  Bumped dll-number from 2 to 3 in makefile.cygwin
   Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
      if user attempts to run it on an 8-bit display.
   Updated contrib/gregbook
@@ -1064,6 +1070,7 @@ version 1.2.2beta3 [March 7, 2002]
   Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
   Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown
   Removed unused png_write_destroy_info prototype from png.h
+  Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case
   Added install-shared target to all makefiles that make shared libraries.
   Stopped a double free of palette, hist, and trans when not using free_me.
   Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
@@ -1258,6 +1265,8 @@ version 1.2.6beta3 [July 18, 2004]
   Updated scripts/makefile.vc(a)win32 (Cosmin).
   Updated the MSVC project (Simon-Pierre, Cosmin).
   Updated the Borland C++ Builder project (Cosmin).
+  Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
+  Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
   Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
   Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
     (Cosmin).
@@ -1349,6 +1358,7 @@ version 1.2.7beta2 [August 28, 2004]
   Fixed bug with sCAL chunk and big-endian machines (David Munro).
   Undid new code added in 1.2.6rc2 to update the color_type in
     png_set_filler().
+  Added png_set_add_alpha() that updates color type.
 version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
   Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
 
@@ -1359,6 +1369,7 @@ version 1.2.8beta1 [November 1, 2004]
   Fixed bug in png_text_compress() that would fail to complete a large block.
   Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
     strip alpha operation in png_do_strip_filler().
+  Added PNG_1_2_X definition in pngconf.h
   #ifdef out png_info_init in png.c and png_read_init in pngread.c (as of 1.3.0)
 version 1.2.8beta2 [November 2, 2004]
   Reduce color_type to a nonalpha type after strip alpha operation in
@@ -1469,7 +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 (RELEASE) in configuration files.
+  Fixed typo (20) in configuration files.
 
 version 1.2.9beta7 [March 7, 2006]
   Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
@@ -1658,7 +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 introduced in 1.2.15beta6.
+  Fixed shared library numbering error that was intruduced 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.
@@ -1666,7 +1677,7 @@ version 1.2.15rc4 [December 27, 2006]
 version 1.2.15rc5 [December 31, 2006]
   Revised handling of rgb_to_gray.
 
-version 1.0.23, 1.2.15 [January 5, 2007]
+version 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]
@@ -1675,7 +1686,7 @@ version 1.2.16beta1 [January 6, 2007]
 version 1.2.16beta2 [January 16, 2007]
   Revised scripts/CMakeLists.txt
  
-version 1.0.24, 1.2.16 [January 31, 2007]
+version 1.2.16 [January 31, 2007]
   No changes.
  
 version 1.2.17beta1 [March 6, 2007]
@@ -1886,7 +1897,6 @@ 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.
@@ -1894,177 +1904,6 @@ version 1.2.20beta01 [August 19, 2007]
 version 1.2.20beta02 [August 20, 2007]
   Avoid compiling pnggccrd.c on Intel-Apple platforms.
 
-version 1.2.20beta03 [August 20, 2007]
-  Added "/D PNG_NO_MMX_CODE" to the non-mmx builds of projects/visualc6
-    and visualc71.
-
-version 1.2.20beta04 [August 21, 2007]
-  Revised pngvcrd.c for improved efficiency (Steve Snyder).
-
-version 1.2.20rc1 [August 23, 2007]
-  Revised pngconf.h to set PNG_NO_MMX_CODE for gcc-3.x compilers.
-
-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 1.2.20rc3 [August 30, 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 1.2.20rc6 [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_decompres_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.
-
 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 1.0.31 - February 18, 2008
+Installing libpng version 1.2.20beta02 - August 20, 2007
 
 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-1.0.31" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.2.20beta02" 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 +101,15 @@ include
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng10.so.0.1.0.31)
+                       gcc, creates libpng12.so.0.1.2.20beta02)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng10.so.0.1.0.31)
+                       (gcc, creates libpng12.so.0.1.2.20beta02)
+ makefile.gcmmx    =>  Linux/ELF makefile
+                       (gcc, creates libpng12.so.0.1.2.20beta02,
+                       uses assembler code tuned for Intel MMX platform)
+ makefile.nommx    =>  Linux/ELF makefile
+                       (gcc, creates libpng12.so.0.1.2.20beta02
+                       does not use Intel MMX assembler code)
  makefile.gcc      =>  Generic makefile (gcc, creates static libpng.a)
  makefile.knr      =>  Archaic UNIX Makefile that converts files with
                        ansi2knr (Requires ansi2knr.c from
@@ -120,19 +126,19 @@ include
  makefile.intel    =>  Intel C/C++ version 4.0 and later
  libpng.icc        =>  Project file for IBM VisualAge/C++ version 4.0 or later
  makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD, makes libpng.so.
- makefile.ne10bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
-                       makes libpng10.so
+ makefile.ne12bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
+                       makes libpng12.so
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng10.so.0.1.0.31)
+                       creates libpng12.so.0.1.2.20beta02)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng10.so.0.1.0.31)
+                       creates libpng12.so.0.1.2.20beta02)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng10.so.0.1.0.31)
+                       creates libpng12.so.0.1.2.20beta02)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng10.so.0.1.0.31)
+                       creates libpng12.so.0.1.2.20beta02)
  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
@@ -148,7 +154,10 @@ include
  makefile.tc3      =>  Turbo C 3.0 makefile
  makefile.dj2      =>  DJGPP 2 makefile
  makefile.msc      =>  Microsoft C makefile
- makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later
+ makefile.vcawin32 =>  makefile for Microsoft Visual C++ 5.0 and later (uses
+                       assembler code tuned for Intel MMX platform)
+ makefile.vcwin32  =>  makefile for Microsoft Visual C++ 4.0 and later (does
+                       not use assembler code)
  makefile.os2      =>  OS/2 Makefile (gcc and emx, requires pngos2.def)
  pngos2.def        =>  OS/2 module definition file used by makefile.os2
  makefile.watcom   =>  Watcom 10a+ Makefile, 32-bit flat memory model

KNOWNBUG

@@ -1,22 +1,29 @@
 
-Known bugs in libpng version 1.0.31
+Known bugs in libpng version 1.2.20beta02
 
-1. February 23, 2006: The custom makefiles don't build libpng with -lz.
+1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
+   reading interlaced PNG files, when assembler code is enabled but running
+   on a non-MMX i386 platform.
+
+   STATUS: Under investigation.  The change to pnggccrd.c in libpng-1.2.1
+   fixed a problem under FreeBSD but not the problem with NetBSD, which
+   still fails as of libpng-1.2.2rc1.
+
+2. 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 1.4.0.
+   as a part of a major overhaul of the makefiles in libpng version 1.3.0.
 
-2. February 24, 2006: The Makefile generated by the "configure" script
+3. 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.
+4. June 28, 2007: Pnggccrd.c has been reported to be unreliable on
+   several 64-bit platforms running gcc-3.x.  Although it appears to
+   build properly, it does not always read files correctly.
 
-   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.
+   STATUS:  Appears to be a bug in the 64-bit version of gcc-3.4.6.
+   Workarounds are to define PNG_NO_MMX_FILTER_UP|AVG|PAETH (as in
+   pngconf.h) or to upgrade gcc to a newer version.
 

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 1.0.31, February 18, 2008, are
-Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.2.20beta02, August 20, 2007, are
+Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
 
@@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 18, 2008
+August 20, 2007

Makefile.am

@@ -16,7 +16,7 @@ AUTOMAKE_OPTIONS = foreign
 # test programs - run on make check, make distcheck
 check_PROGRAMS= pngtest
 pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng10.la
+pngtest_LDADD = libpng12.la
 TESTS = test-pngtest.sh
 TESTS_ENVIRONMENT= srcdir=$(srcdir) 
 
@@ -24,42 +24,39 @@ TESTS_ENVIRONMENT= srcdir=$(srcdir)
 dist_man_MANS= libpng.3 libpngpf.3 png.5
 
 # generate the -config scripts if required
-binconfigs= libpng10-config 
-EXTRA_SCRIPTS= libpng-config libpng10-config
+binconfigs= libpng12-config 
+EXTRA_SCRIPTS= libpng-config libpng12-config
 bin_SCRIPTS= @binconfigs@
 
 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng10.la @compatlib@
+lib_LTLIBRARIES=libpng12.la @compatlib@
 EXTRA_LTLIBRARIES= libpng.la
-libpng10_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+libpng12_la_SOURCES = 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 \
+	pngwtran.c pngmem.c pngerror.c pngpread.c pnggccrd.c \
 	png.h pngconf.h
-libpng_la_SOURCES = $(libpng10_la_SOURCES)
+libpng_la_SOURCES = $(libpng12_la_SOURCES)
 
 libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
-libpng10_la_CPPFLAGS = @LIBPNG_DEFINES@
+libpng12_la_CPPFLAGS = @LIBPNG_DEFINES@
 
 # MAJOR UPGRADE: the version-number settings below must be changed.
-libpng10_la_LDFLAGS = -no-undefined -export-dynamic \
+libpng12_la_LDFLAGS = -no-undefined -export-dynamic \
 	-version-number 0:@PNGLIB_RELEASE@:0
 # -rpath is needed as automake doesn't know the directory
 libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 2:@PNGLIB_RELEASE@:0
+	-version-number 3:@PNGLIB_RELEASE@:0
 
 if HAVE_LD_VERSION_SCRIPT
   # Versioned symbols and restricted exports
-  libpng10_la_LDFLAGS += -Wl,--version-script=libpng.vers
-  libpng10_la_DEPENDENCIES = libpng.vers
+  libpng12_la_LDFLAGS += -Wl,--version-script=libpng.vers
+  libpng12_la_DEPENDENCIES = libpng.vers
 else
   # Only restricted exports when possible
-  libpng10_la_LDFLAGS += -export-symbols libpng.sym
-  libpng10_la_DEPENDENCIES = libpng.sym
+  libpng12_la_LDFLAGS += -export-symbols libpng.sym
+  libpng12_la_DEPENDENCIES = libpng.sym
 endif
-libpng_la_DEPENDENCIES = $(libpng10_la_DEPENDENCIES)
-
-# Avoid depending upon Character Ranges.
-AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
 
 #distribute headers in /usr/include/libpng/*
 pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
@@ -68,7 +65,7 @@ pkginclude_HEADERS= png.h pngconf.h
 # pkg-config stuff, note that libpng.pc is always required in order
 # to get the correct library
 pkgconfigdir = @pkgconfigdir@
-pkgconfig_DATA = libpng10.pc
+pkgconfig_DATA = libpng12.pc
 
 #extra source distribution files.
 EXTRA_DIST= \
@@ -88,7 +85,7 @@ EXTRA_DIST= \
 	$(TESTS) \
 	example.c libpng.txt pngvcrd.c 
 
-CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
+CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
 $(PNGLIB_BASENAME).pc: libpng.pc
@@ -100,9 +97,8 @@ $(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[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
-		-e 's|^.*PNG_DATA_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
+		$(SED) -n -e 's|^.*PNG_FUNCTION_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+			-e 's|^.*PNG_DATA_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
 			>$@.new
 	mv $@.new $@
 
@@ -123,7 +119,7 @@ install-data-hook:
 	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
 	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
-# do evil things to libpng to cause libpng10 to be used
+# do evil things to libpng to cause libpng12 to be used
 install-exec-hook:
 	cd $(DESTDIR)$(bindir); rm -f libpng-config
 	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config

Makefile.in

@@ -27,7 +27,7 @@
 
 
 
-SOURCES = $(libpng_la_SOURCES) $(libpng10_la_SOURCES) $(pngtest_SOURCES)
+SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) $(pngtest_SOURCES)
 
 srcdir = @srcdir@
 top_srcdir = @top_srcdir@
@@ -87,22 +87,23 @@ am__objects_1 = libpng_la-png.lo libpng_la-pngset.lo \
 	libpng_la-pngread.lo libpng_la-pngrio.lo libpng_la-pngwio.lo \
 	libpng_la-pngwrite.lo libpng_la-pngrtran.lo \
 	libpng_la-pngwtran.lo libpng_la-pngmem.lo \
-	libpng_la-pngerror.lo libpng_la-pngpread.lo
+	libpng_la-pngerror.lo libpng_la-pngpread.lo \
+	libpng_la-pnggccrd.lo
 am_libpng_la_OBJECTS = $(am__objects_1)
 libpng_la_OBJECTS = $(am_libpng_la_OBJECTS)
-libpng10_la_LIBADD =
-am_libpng10_la_OBJECTS = libpng10_la-png.lo libpng10_la-pngset.lo \
-	libpng10_la-pngget.lo libpng10_la-pngrutil.lo \
-	libpng10_la-pngtrans.lo libpng10_la-pngwutil.lo \
-	libpng10_la-pngread.lo libpng10_la-pngrio.lo \
-	libpng10_la-pngwio.lo libpng10_la-pngwrite.lo \
-	libpng10_la-pngrtran.lo libpng10_la-pngwtran.lo \
-	libpng10_la-pngmem.lo libpng10_la-pngerror.lo \
-	libpng10_la-pngpread.lo
-libpng10_la_OBJECTS = $(am_libpng10_la_OBJECTS)
+libpng12_la_LIBADD =
+am_libpng12_la_OBJECTS = libpng12_la-png.lo libpng12_la-pngset.lo \
+	libpng12_la-pngget.lo libpng12_la-pngrutil.lo \
+	libpng12_la-pngtrans.lo libpng12_la-pngwutil.lo \
+	libpng12_la-pngread.lo libpng12_la-pngrio.lo \
+	libpng12_la-pngwio.lo libpng12_la-pngwrite.lo \
+	libpng12_la-pngrtran.lo libpng12_la-pngwtran.lo \
+	libpng12_la-pngmem.lo libpng12_la-pngerror.lo \
+	libpng12_la-pngpread.lo libpng12_la-pnggccrd.lo
+libpng12_la_OBJECTS = $(am_libpng12_la_OBJECTS)
 am_pngtest_OBJECTS = pngtest.$(OBJEXT)
 pngtest_OBJECTS = $(am_pngtest_OBJECTS)
-pngtest_DEPENDENCIES = libpng10.la
+pngtest_DEPENDENCIES = libpng12.la
 binSCRIPT_INSTALL = $(INSTALL_SCRIPT)
 SCRIPTS = $(bin_SCRIPTS)
 DEFAULT_INCLUDES = -I. -I$(srcdir) -I.
@@ -116,9 +117,9 @@ LTCOMPILE = $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) \
 CCLD = $(CC)
 LINK = $(LIBTOOL) --mode=link --tag=CC $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
 	$(AM_LDFLAGS) $(LDFLAGS) -o $@
-SOURCES = $(libpng_la_SOURCES) $(libpng10_la_SOURCES) \
+SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
 	$(pngtest_SOURCES)
-DIST_SOURCES = $(libpng_la_SOURCES) $(libpng10_la_SOURCES) \
+DIST_SOURCES = $(libpng_la_SOURCES) $(libpng12_la_SOURCES) \
 	$(pngtest_SOURCES)
 man3dir = $(mandir)/man3
 man5dir = $(mandir)/man5
@@ -142,9 +143,6 @@ 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@
@@ -206,7 +204,6 @@ 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@
@@ -229,7 +226,7 @@ am__tar = @am__tar@
 am__untar = @am__untar@
 
 # generate the -config scripts if required
-binconfigs = libpng10-config 
+binconfigs = libpng12-config 
 bindir = @bindir@
 build = @build@
 build_alias = @build_alias@
@@ -275,39 +272,39 @@ PNGLIB_BASENAME = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
 # libpng does not follow GNU file name conventions
 AUTOMAKE_OPTIONS = foreign
 pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng10.la
+pngtest_LDADD = libpng12.la
 TESTS = test-pngtest.sh
 TESTS_ENVIRONMENT = srcdir=$(srcdir) 
 
 # man pages
 dist_man_MANS = libpng.3 libpngpf.3 png.5
-EXTRA_SCRIPTS = libpng-config libpng10-config
+EXTRA_SCRIPTS = libpng-config libpng12-config
 bin_SCRIPTS = @binconfigs@
 
 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES = libpng10.la @compatlib@
+lib_LTLIBRARIES = libpng12.la @compatlib@
 EXTRA_LTLIBRARIES = libpng.la
-libpng10_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+libpng12_la_SOURCES = 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 \
+	pngwtran.c pngmem.c pngerror.c pngpread.c pnggccrd.c \
 	png.h pngconf.h
 
-libpng_la_SOURCES = $(libpng10_la_SOURCES)
+libpng_la_SOURCES = $(libpng12_la_SOURCES)
 libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
-libpng10_la_CPPFLAGS = @LIBPNG_DEFINES@
+libpng12_la_CPPFLAGS = @LIBPNG_DEFINES@
 
 # MAJOR UPGRADE: the version-number settings below must be changed.
-libpng10_la_LDFLAGS = -no-undefined -export-dynamic -version-number \
+libpng12_la_LDFLAGS = -no-undefined -export-dynamic -version-number \
 	0:@PNGLIB_RELEASE@:0 $(am__append_1) $(am__append_2)
 # -rpath is needed as automake doesn't know the directory
 libpng_la_LDFLAGS = -rpath '$(libdir)' -no-undefined -export-dynamic \
-	-version-number 2:@PNGLIB_RELEASE@:0
+	-version-number 3:@PNGLIB_RELEASE@:0
 
-@HAVE_LD_VERSION_SCRIPT_FALSE@libpng10_la_DEPENDENCIES = libpng.sym
-@HAVE_LD_VERSION_SCRIPT_TRUE@libpng10_la_DEPENDENCIES = libpng.vers
-libpng_la_DEPENDENCIES = $(libpng10_la_DEPENDENCIES)
+@HAVE_LD_VERSION_SCRIPT_FALSE@libpng12_la_DEPENDENCIES = libpng.sym
+@HAVE_LD_VERSION_SCRIPT_TRUE@libpng12_la_DEPENDENCIES = libpng.vers
+libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
 pkginclude_HEADERS = png.h pngconf.h
-pkgconfig_DATA = libpng10.pc
+pkgconfig_DATA = libpng12.pc
 
 #extra source distribution files.
 EXTRA_DIST = \
@@ -327,7 +324,7 @@ EXTRA_DIST = \
 	$(TESTS) \
 	example.c libpng.txt pngvcrd.c 
 
-CLEANFILES = pngout.png libpng10.pc libpng10-config libpng.vers \
+CLEANFILES = pngout.png libpng12.pc libpng12-config libpng.vers \
 libpng.sym
 
 all: config.h
@@ -418,8 +415,8 @@ clean-libLTLIBRARIES:
 	done
 libpng.la: $(libpng_la_OBJECTS) $(libpng_la_DEPENDENCIES) 
 	$(LINK)  $(libpng_la_LDFLAGS) $(libpng_la_OBJECTS) $(libpng_la_LIBADD) $(LIBS)
-libpng10.la: $(libpng10_la_OBJECTS) $(libpng10_la_DEPENDENCIES) 
-	$(LINK) -rpath $(libdir) $(libpng10_la_LDFLAGS) $(libpng10_la_OBJECTS) $(libpng10_la_LIBADD) $(LIBS)
+libpng12.la: $(libpng12_la_OBJECTS) $(libpng12_la_DEPENDENCIES) 
+	$(LINK) -rpath $(libdir) $(libpng12_la_LDFLAGS) $(libpng12_la_OBJECTS) $(libpng12_la_LIBADD) $(LIBS)
 
 clean-checkPROGRAMS:
 	@list='$(check_PROGRAMS)'; for p in $$list; do \
@@ -456,23 +453,25 @@ mostlyclean-compile:
 distclean-compile:
 	-rm -f *.tab.c
 
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-png.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngerror.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngget.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngmem.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngpread.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngread.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngrio.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngrtran.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngrutil.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngset.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngtrans.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngwio.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngwrite.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngwtran.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng10_la-pngwutil.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-png.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngerror.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pnggccrd.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngget.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngmem.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngpread.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngread.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngrio.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngrtran.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngrutil.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngset.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngtrans.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngwio.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngwrite.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngwtran.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng12_la-pngwutil.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-png.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-pngerror.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-pnggccrd.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-pngget.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-pngmem.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/libpng_la-pngpread.Plo@am__quote@
@@ -614,110 +613,124 @@ libpng_la-pngpread.lo: pngpread.c
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
 @am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
 
-libpng10_la-png.lo: png.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-png.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-png.Tpo" -c -o libpng10_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-png.Tpo" "$(DEPDIR)/libpng10_la-png.Plo"; else rm -f "$(DEPDIR)/libpng10_la-png.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='png.c' object='libpng10_la-png.lo' libtool=yes @AMDEPBACKSLASH@
+libpng_la-pnggccrd.lo: pnggccrd.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng_la-pnggccrd.lo -MD -MP -MF "$(DEPDIR)/libpng_la-pnggccrd.Tpo" -c -o libpng_la-pnggccrd.lo `test -f 'pnggccrd.c' || echo '$(srcdir)/'`pnggccrd.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng_la-pnggccrd.Tpo" "$(DEPDIR)/libpng_la-pnggccrd.Plo"; else rm -f "$(DEPDIR)/libpng_la-pnggccrd.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pnggccrd.c' object='libpng_la-pnggccrd.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng_la-pnggccrd.lo `test -f 'pnggccrd.c' || echo '$(srcdir)/'`pnggccrd.c
 
-libpng10_la-pngset.lo: pngset.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-pngset.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-pngset.Tpo" -c -o libpng10_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-pngset.Tpo" "$(DEPDIR)/libpng10_la-pngset.Plo"; else rm -f "$(DEPDIR)/libpng10_la-pngset.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngset.c' object='libpng10_la-pngset.lo' libtool=yes @AMDEPBACKSLASH@
+libpng12_la-png.lo: png.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-png.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-png.Tpo" -c -o libpng12_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-png.Tpo" "$(DEPDIR)/libpng12_la-png.Plo"; else rm -f "$(DEPDIR)/libpng12_la-png.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='png.c' object='libpng12_la-png.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-pngset.lo `test -f 'pngset.c' || echo '$(srcdir)/'`pngset.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-png.lo `test -f 'png.c' || echo '$(srcdir)/'`png.c
 
-libpng10_la-pngget.lo: pngget.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-pngget.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-pngget.Tpo" -c -o libpng10_la-pngget.lo `test -f 'pngget.c' || echo '$(srcdir)/'`pngget.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-pngget.Tpo" "$(DEPDIR)/libpng10_la-pngget.Plo"; else rm -f "$(DEPDIR)/libpng10_la-pngget.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngget.c' object='libpng10_la-pngget.lo' libtool=yes @AMDEPBACKSLASH@
+libpng12_la-pngset.lo: pngset.c
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-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-pngwtran.lo `test -f 'pngwtran.c' || echo '$(srcdir)/'`pngwtran.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngrtran.lo `test -f 'pngrtran.c' || echo '$(srcdir)/'`pngrtran.c
 
-libpng10_la-pngmem.lo: pngmem.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-pngmem.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-pngmem.Tpo" -c -o libpng10_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-pngmem.Tpo" "$(DEPDIR)/libpng10_la-pngmem.Plo"; else rm -f "$(DEPDIR)/libpng10_la-pngmem.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngmem.c' object='libpng10_la-pngmem.lo' libtool=yes @AMDEPBACKSLASH@
+libpng12_la-pngwtran.lo: pngwtran.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngwtran.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngwtran.Tpo" -c -o libpng12_la-pngwtran.lo `test -f 'pngwtran.c' || echo '$(srcdir)/'`pngwtran.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngwtran.Tpo" "$(DEPDIR)/libpng12_la-pngwtran.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngwtran.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngwtran.c' object='libpng12_la-pngwtran.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngwtran.lo `test -f 'pngwtran.c' || echo '$(srcdir)/'`pngwtran.c
 
-libpng10_la-pngerror.lo: pngerror.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-pngerror.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-pngerror.Tpo" -c -o libpng10_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-pngerror.Tpo" "$(DEPDIR)/libpng10_la-pngerror.Plo"; else rm -f "$(DEPDIR)/libpng10_la-pngerror.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngerror.c' object='libpng10_la-pngerror.lo' libtool=yes @AMDEPBACKSLASH@
+libpng12_la-pngmem.lo: pngmem.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngmem.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngmem.Tpo" -c -o libpng12_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngmem.Tpo" "$(DEPDIR)/libpng12_la-pngmem.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngmem.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngmem.c' object='libpng12_la-pngmem.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngmem.lo `test -f 'pngmem.c' || echo '$(srcdir)/'`pngmem.c
 
-libpng10_la-pngpread.lo: pngpread.c
-@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng10_la-pngpread.lo -MD -MP -MF "$(DEPDIR)/libpng10_la-pngpread.Tpo" -c -o libpng10_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c; \
-@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng10_la-pngpread.Tpo" "$(DEPDIR)/libpng10_la-pngpread.Plo"; else rm -f "$(DEPDIR)/libpng10_la-pngpread.Tpo"; exit 1; fi
-@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngpread.c' object='libpng10_la-pngpread.lo' libtool=yes @AMDEPBACKSLASH@
+libpng12_la-pngerror.lo: pngerror.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngerror.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngerror.Tpo" -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngerror.Tpo" "$(DEPDIR)/libpng12_la-pngerror.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngerror.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngerror.c' object='libpng12_la-pngerror.lo' libtool=yes @AMDEPBACKSLASH@
 @AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
-@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng10_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng10_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngerror.lo `test -f 'pngerror.c' || echo '$(srcdir)/'`pngerror.c
+
+libpng12_la-pngpread.lo: pngpread.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pngpread.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pngpread.Tpo" -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pngpread.Tpo" "$(DEPDIR)/libpng12_la-pngpread.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pngpread.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pngpread.c' object='libpng12_la-pngpread.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pngpread.lo `test -f 'pngpread.c' || echo '$(srcdir)/'`pngpread.c
+
+libpng12_la-pnggccrd.lo: pnggccrd.c
+@am__fastdepCC_TRUE@	if $(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -MT libpng12_la-pnggccrd.lo -MD -MP -MF "$(DEPDIR)/libpng12_la-pnggccrd.Tpo" -c -o libpng12_la-pnggccrd.lo `test -f 'pnggccrd.c' || echo '$(srcdir)/'`pnggccrd.c; \
+@am__fastdepCC_TRUE@	then mv -f "$(DEPDIR)/libpng12_la-pnggccrd.Tpo" "$(DEPDIR)/libpng12_la-pnggccrd.Plo"; else rm -f "$(DEPDIR)/libpng12_la-pnggccrd.Tpo"; exit 1; fi
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='pnggccrd.c' object='libpng12_la-pnggccrd.lo' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LIBTOOL) --mode=compile --tag=CC $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(libpng12_la_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -c -o libpng12_la-pnggccrd.lo `test -f 'pnggccrd.c' || echo '$(srcdir)/'`pnggccrd.c
 
 mostlyclean-libtool:
 	-rm -f *.lo
@@ -1234,9 +1247,8 @@ $(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[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
-		-e 's|^.*PNG_DATA_EXPORT[ 	]*\([$(AN)]*\).*$$|$(SYMBOL_PREFIX)\1|p' \
+		$(SED) -n -e 's|^.*PNG_FUNCTION_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
+			-e 's|^.*PNG_DATA_EXPORT[ 	]*\([a-zA-Z0-9_]*\).*$$|\1|p' \
 			>$@.new
 	mv $@.new $@
 
@@ -1257,7 +1269,7 @@ install-data-hook:
 	cd $(DESTDIR)$(pkgconfigdir); rm -f libpng.pc
 	cd $(DESTDIR)$(pkgconfigdir); $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
 
-# do evil things to libpng to cause libpng10 to be used
+# do evil things to libpng to cause libpng12 to be used
 install-exec-hook:
 	cd $(DESTDIR)$(bindir); rm -f libpng-config
 	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config

README

@@ -1,12 +1,11 @@
-README for libpng version 1.0.31 - February 18, 2008 (shared library 10.0)
+README for libpng version 1.2.20beta02 - August 20, 2007 (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,
-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.
+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.
 
 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
@@ -78,12 +77,12 @@ 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.simplesystems.org/pub/png/src/
+zlib should be available at the same place that libpng is, or at.
+ftp://ftp.info-zip.org/pub/infozip/zlib
 
 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/pngdocs.html
+these at http://www.libpng.org/pub/png/documents/
 
 This code is currently being archived at libpng.sf.net in the
 [DOWNLOAD] area, and on CompuServe, Lib 20 (PNG SUPPORT)
@@ -114,8 +113,8 @@ 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-mng-misc at lists.sourceforge.net, subscription required, visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement to subscribe)
+the (png-list at ccrc.wustl.edu, subscription required, write to
+majordomo at ccrc.wustl.edu with "subscribe png-list" in your message).
 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
@@ -126,7 +125,7 @@ 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 twelve years now, and it is official and
+been discussing PNG for nine 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.
@@ -141,7 +140,6 @@ 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
@@ -149,6 +147,7 @@ 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
@@ -191,11 +190,11 @@ 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 libpng10.so.0.1.0.31)
+                            gcc, creates libpng12.so.0.1.2.20beta02)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng10.so.0.1.0.31)
+                            (gcc, creates libpng12.so.0.1.2.20beta02)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng10.so.0.1.0.31,
+                            (gcc, creates libpng12.so.0.1.2.20beta02,
                             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
@@ -213,16 +212,16 @@ Files in this distribution:
        makefile.intel   =>  Intel C/C++ version 4.0 and later
        libpng.icc       =>  Project file, IBM VisualAge/C++ 4.0 or later
        makefile.netbsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng.so.
-       makefile.ne10bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng10.so
+       makefile.ne12bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng12.so
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng10.so.0.1.0.31)
+                            (gcc, creates libpng12.so.0.1.2.20beta02)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng10.so.0.1.0.31)
+                            (gcc, creates libpng12.so.0.1.2.20beta02)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng10.so.0.1.0.31)
+                            (gcc, creates libpng12.so.0.1.2.20beta02)
        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
@@ -257,7 +256,7 @@ Good luck, and happy coding.
 
 -Andreas Eric Dilger (former maintainer, 1996-1997)
  Internet: adilger at enel.ucalgary.ca
- Web: http://members.shaw.ca/adilger/
+ Web: http://www-mddsp.enel.ucalgary.ca/People/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:
    =========================
 
-      February 18, 2008
+      August 20, 2007
 
       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 1.0.31 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.20beta02 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 1.0.31.
+# Generated by GNU Autoconf 2.61 for libpng 1.2.20beta02.
 #
 # 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='1.0.31'
-PACKAGE_STRING='libpng 1.0.31'
+PACKAGE_VERSION='1.2.20beta02'
+PACKAGE_STRING='libpng 1.2.20beta02'
 PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
 
 ac_unique_file="pngget.c"
@@ -879,7 +879,6 @@ LIBPNG_DEFINES
 LIBPNG_NO_MMX
 HAVE_LD_VERSION_SCRIPT_TRUE
 HAVE_LD_VERSION_SCRIPT_FALSE
-SYMBOL_PREFIX
 PNGLIB_VERSION
 PNGLIB_MAJOR
 PNGLIB_MINOR
@@ -1406,7 +1405,7 @@ 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 1.0.31 to adapt to many kinds of systems.
+\`configure' configures libpng 1.2.20beta02 to adapt to many kinds of systems.
 
 Usage: $0 [OPTION]... [VAR=VALUE]...
 
@@ -1476,7 +1475,7 @@ fi
 
 if test -n "$ac_init_help"; then
   case $ac_init_help in
-     short | recursive ) echo "Configuration of libpng 1.0.31:";;
+     short | recursive ) echo "Configuration of libpng 1.2.20beta02:";;
    esac
   cat <<\_ACEOF
 
@@ -1586,7 +1585,7 @@ fi
 test -n "$ac_init_help" && exit $ac_status
 if $ac_init_version; then
   cat <<\_ACEOF
-libpng configure 1.0.31
+libpng configure 1.2.20beta02
 generated by GNU Autoconf 2.61
 
 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@@ -1600,7 +1599,7 @@ 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 1.0.31, which was
+It was created by libpng $as_me 1.2.20beta02, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   $ $0 $@
@@ -2270,7 +2269,7 @@ fi
 
 # Define the identity of the package.
  PACKAGE='libpng'
- VERSION='1.0.31'
+ VERSION='1.2.20beta02'
 
 
 cat >>confdefs.h <<_ACEOF
@@ -2441,10 +2440,10 @@ fi
 
 
 
-PNGLIB_VERSION=1.0.31
+PNGLIB_VERSION=1.2.20beta02
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=0
-PNGLIB_RELEASE=31
+PNGLIB_MINOR=2
+PNGLIB_RELEASE=20
 
 
 
@@ -20790,18 +20789,6 @@ 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
 
 
@@ -21295,7 +21282,7 @@ 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 1.0.31, which was
+This file was extended by libpng $as_me 1.2.20beta02, which was
 generated by GNU Autoconf 2.61.  Invocation command line was
 
   CONFIG_FILES    = $CONFIG_FILES
@@ -21348,7 +21335,7 @@ Report bugs to <bug-autoconf@gnu.org>."
 _ACEOF
 cat >>$CONFIG_STATUS <<_ACEOF
 ac_cs_version="\\
-libpng config.status 1.0.31
+libpng config.status 1.2.20beta02
 configured by $0, generated by GNU Autoconf 2.61,
   with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"
 
@@ -21679,7 +21666,6 @@ 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
@@ -21690,7 +21676,7 @@ compatlib!$compatlib$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 22; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 21; 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], [1.0.31], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.2.20beta02], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.0.31
+PNGLIB_VERSION=1.2.20beta02
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=0
-PNGLIB_RELEASE=31
+PNGLIB_MINOR=2
+PNGLIB_RELEASE=20
 
 dnl End of version number stuff
 
@@ -84,16 +84,6 @@ 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/pngminim/decoder/README

@@ -0,0 +1,6 @@
+This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+
+To build a minimal read-only decoder, run
+    gather.sh  # to collect needed files from pngminus, libpng, and zlib
+    make -f makefile.std
+ 

contrib/pngminim/decoder/gather.sh

@@ -0,0 +1,8 @@
+cp ../../pngminus/png2pnm.c pngm2pnm.c
+cp ../../../*.h .
+cp ../../../*.c .
+rm example.c pnggccrd.c pngvcrd.c pngtest.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

contrib/pngminim/decoder/makefile.std

@@ -0,0 +1,44 @@
+# Makefile for PngMinus (pngm2pnm)
+# Linux / Unix
+
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
+       -DdeflateParams\(a,b,c\)=Z_OK -I. -O1
+
+C=.c
+O=.o
+L=.a
+E=
+
+ZOBJS  = adler32$(O) crc32$(O) gzio$(O) \
+	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
+	 trees$(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) \
+	pngset$(O) pngtrans$(O)  $(ZOBJS)
+
+# implicit make rules -------------------------------------------------------
+
+.c$(O): png.h pngconf.h pngusr.h zlib.h
+	$(CC) -c $(CFLAGS) $<
+
+# dependencies
+
+all: pngm2pnm$(E)
+
+pngm2pnm$(E): $(OBJS)
+	$(LD) -o pngm2pnm$(E) $(OBJS)
+	strip pngm2pnm$(E)
+
+clean:
+	$(RM) pngm2pnm$(O)
+	$(RM) pngm2pnm$(E)
+	$(RM) $(OBJS)
+
+# End of makefile for pngm2pnm

contrib/pngminim/decoder/pngusr.h

@@ -0,0 +1,67 @@
+/* minrdpngconf.h: headers to make a minimal png-read-only library
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 2007 Glenn Randers-Pehrson
+ * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
+ */
+
+#ifndef MINRDPNGCONF_H
+#define MINRDPNGCONF_H
+
+#define PNG_NO_GLOBAL_ARRAYS
+
+#define PNG_NO_WARNINGS
+#define png_warning(s1,s2) ""
+#define png_chunk_warning(s1,s2) ""
+#define PNG_NO_ERROR_TEXT
+#define png_error(s1,s2) png_err(s1)
+#define png_chunk_error(s1,s2) png_err(s1)
+
+#define PNG_NO_ASSEMBLER_CODE
+#define PNG_NO_OPTIMIZED_CODE
+#define PNG_NO_READ_GAMMA
+#define PNG_NO_READ_BACKGROUND
+#define PNG_NO_READ_DITHER
+#define PNG_NO_READ_INVERT
+#define PNG_NO_READ_SHIFT
+#define PNG_NO_READ_PACK
+#define PNG_NO_READ_PACKSWAP
+#define PNG_NO_READ_FILLER
+#define PNG_NO_READ_SWAP_ALPHA
+#define PNG_NO_READ_INVERT_ALPHA
+#define PNG_NO_READ_RGB_TO_GRAY
+#define PNG_NO_READ_USER_TRANSFORM
+#define PNG_NO_READ_bKGD
+#define PNG_NO_READ_cHRM
+#define PNG_NO_READ_gAMA
+#define PNG_NO_READ_hIST
+#define PNG_NO_READ_iCCP
+#define PNG_NO_READ_pCAL
+#define PNG_NO_READ_pHYs
+#define PNG_NO_READ_sBIT
+#define PNG_NO_READ_sCAL
+#define PNG_NO_READ_sPLT
+#define PNG_NO_READ_TEXT
+#define PNG_NO_READ_tIME
+#define PNG_NO_READ_UNKNOWN_CHUNKS
+#define PNG_NO_READ_USER_CHUNKS
+#define PNG_NO_READ_EMPTY_PLTE
+#define PNG_NO_READ_OPT_PLTE
+#define PNG_NO_READ_STRIP_ALPHA
+#define PNG_NO_READ_oFFs
+#define PNG_NO_WARN_UNINITIALIZED_ROW
+
+#define PNG_NO_WRITE_SUPPORTED
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_USER_MEM
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_MNG_FEATURES
+#define PNG_NO_USER_TRANSFORM_PTR
+#define PNG_NO_HANDLE_AS_UNKNOWN
+#define PNG_NO_CONSOLE_IO
+#define PNG_NO_ZALLOC_ZERO
+#define PNG_NO_ERROR_NUMBERS
+#define PNG_NO_EASY_ACCESS
+#define PNG_NO_PROGRESSIVE_READ
+
+#endif /* MINRDPNGCONF_H */

contrib/pngminim/encoder/README

@@ -0,0 +1,6 @@
+This demonstrates the use of PNG_USER_CONFIG and pngusr.h
+
+To build a minimal write-only encoder, run
+    gather.sh  # to collect needed files from pngminus, libpng, and zlib
+    make -f makefile.std
+ 

contrib/pngminim/encoder/dummy_inflate.c

@@ -0,0 +1,27 @@
+#include "zlib.h"
+
+int ZEXPORT inflate(strm, flush)
+z_streamp strm;
+int flush;
+{ return Z_OK ; }
+
+int ZEXPORT inflateReset(strm)
+z_streamp strm;
+{ return Z_OK ; }
+
+int ZEXPORT inflateEnd(strm)
+z_streamp strm;
+{ return Z_STREAM_ERROR ; }
+
+int ZEXPORT inflateInit_(strm, version, stream_size)
+z_streamp strm;
+const char *version;
+int stream_size;
+{ return Z_OK ; }
+
+int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
+z_streamp strm;
+int windowBits;
+const char *version;
+int stream_size;
+{ return Z_STREAM_ERROR ; }

contrib/pngminim/encoder/gather.sh

@@ -0,0 +1,9 @@
+cp ../../pngminus/pnm2png.c pnm2pngm.c
+cp ../../../*.h .
+cp ../../../*.c .
+rm example.c pnggccrd.c pngvcrd.c pngtest.c
+# Change the next 2 lines if zlib is somewhere else.
+cp ../../../../zlib/*.h .
+cp ../../../../zlib/*.c .
+rm inf*.[ch]
+rm minigzip.c example.c

contrib/pngminim/encoder/makefile.std

@@ -0,0 +1,44 @@
+# Makefile for PngMinus (pnm2pngm)
+# Linux / Unix
+
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+CFLAGS=-DPNG_USER_CONFIG -DNO_GZIP -I. -O1
+
+C=.c
+O=.o
+L=.a
+E=
+
+ZOBJS  = adler32$(O) compress$(O) crc32$(O) deflate$(O) gzio$(O) \
+	 dummy_inflate$(O) \
+	 trees$(O) uncompr$(O) zutil$(O)
+
+OBJS  = pnm2pngm$(O) png$(O) pngerror$(O) pngget$(O) pngmem$(O) \
+	pngpread$(O) pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) \
+	pngset$(O) pngtrans$(O) pngwio$(O) pngwrite$(O) \
+	pngwtran$(O) pngwutil$(O) $(ZOBJS)
+
+# implicit make rules -------------------------------------------------------
+
+.c$(O): png.h pngconf.h pngusr.h zlib.h
+	$(CC) -c $(CFLAGS) $<
+
+# dependencies
+
+all: pnm2pngm$(E)
+
+pnm2pngm$(E): $(OBJS)
+	$(LD) -o pnm2pngm$(E) $(OBJS)
+	strip pnm2pngm$(E)
+
+clean:
+	$(RM) pnm2pngm$(O)
+	$(RM) pnm2pngm$(E)
+	$(RM) $(OBJS)
+
+# End of makefile for pnm2pngm

contrib/pngminim/encoder/pngusr.h

@@ -0,0 +1,66 @@
+/* minwrpngconf.h: headers to make a minimal png-write-only library
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 2007 Glenn Randers-Pehrson
+ * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
+ */
+
+#ifndef MINWRPNGCONF_H
+#define MINWRPNGCONF_H
+
+#define PNG_NO_GLOBAL_ARRAYS
+
+#define PNG_NO_READ_SUPPORTED
+
+#define PNG_NO_WARNINGS
+#define png_warning(s1,s2) ""
+#define png_chunk_warning(s1,s2) ""
+#define PNG_NO_ERROR_TEXT
+#define png_error(s1,s2) png_err(s1)
+#define png_chunk_error(s1,s2) png_err(s1)
+
+#define PNG_NO_WRITE_BACKGROUND
+#define PNG_NO_WRITE_GAMMA
+#define PNG_NO_WRITE_DITHER
+#define PNG_NO_WRITE_INVERT
+#define PNG_NO_WRITE_SHIFT
+#define PNG_NO_WRITE_PACK
+#define PNG_NO_WRITE_PACKSWAP
+#define PNG_NO_WRITE_FILLER
+#define PNG_NO_WRITE_SWAP_ALPHA
+#define PNG_NO_WRITE_INVERT_ALPHA
+#define PNG_NO_WRITE_RGB_TO_GRAY
+#define PNG_NO_WRITE_USER_TRANSFORM
+#define PNG_NO_WRITE_bKGD
+#define PNG_NO_WRITE_cHRM
+#define PNG_NO_WRITE_gAMA
+#define PNG_NO_WRITE_sRGB
+#define PNG_NO_WRITE_hIST
+#define PNG_NO_WRITE_iCCP
+#define PNG_NO_WRITE_oFFs
+#define PNG_NO_WRITE_pCAL
+#define PNG_NO_WRITE_pHYs
+#define PNG_NO_WRITE_sBIT
+#define PNG_NO_WRITE_sCAL
+#define PNG_NO_WRITE_sPLT
+#define PNG_NO_WRITE_TEXT
+#define PNG_NO_WRITE_tIME
+#define PNG_NO_WRITE_UNKNOWN_CHUNKS
+#define PNG_NO_WRITE_USER_CHUNKS
+#define PNG_NO_WRITE_EMPTY_PLTE
+#define PNG_NO_WRITE_OPT_PLTE
+#define PNG_NO_WRITE_FILTER
+#define PNG_NO_WRITE_WEIGHTED_FILTER
+#define PNG_NO_WRITE_INTERLACING_SUPPORTED  /* effective libpng-1.3.0 */
+
+#define PNG_NO_INFO_IMAGE
+#define PNG_NO_USER_MEM
+#define PNG_NO_FIXED_POINT_SUPPORTED
+#define PNG_NO_MNG_FEATURES
+#define PNG_NO_USER_TRANSFORM_PTR
+#define PNG_NO_HANDLE_AS_UNKNOWN
+#define PNG_NO_CONSOLE_IO
+#define PNG_NO_ZALLOC_ZERO
+#define PNG_NO_ERROR_NUMBERS
+#define PNG_NO_EASY_ACCESS
+
+#endif /* MINWRPNGCONF_H */

libpng-1.2.20beta02.txt

@@ -1,9 +1,9 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.31 - February 18, 2008
+ libpng version 1.2.20beta02 - August 20, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ Copyright (c) 1998-2007 Glenn Randers-Pehrson
  For conditions of distribution and use, see copyright
  notice in png.h.
 
@@ -86,7 +86,9 @@ Libpng is thread safe, provided the threads are using different
 instances of the structures.  Each thread should have its own
 png_struct and png_info instances, and thus its own image.
 Libpng does not protect itself against two threads using the
-same instance of a structure.
+same instance of a structure.  Note: thread safety may be defeated
+by use of some of the MMX assembler code in pnggccrd.c, which is only
+compiled when the user defines PNG_THREAD_UNSAFE_OK.
 
 II. Structures
 
@@ -305,6 +307,28 @@ To inform libpng about your function, use
 
     png_set_read_status_fn(png_ptr, read_row_callback);
 
+Width and height limits
+
+The PNG specification allows the width and height of an image to be as
+large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+Since very few applications really need to process such large images,
+we have imposed an arbitrary 1-million limit on rows and columns.
+Larger images will be rejected immediately with a png_error() call. If
+you wish to override this limit, you can use
+
+   png_set_user_limits(png_ptr, width_max, height_max);
+
+to set your own limits, or use width_max = height_max = 0x7fffffffL
+to allow all valid dimensions (libpng may reject some very large images
+anyway because of potential buffer overflow conditions).
+
+You should put this statement after you create the PNG structure and
+before calling png_read_info(), png_read_png(), or png_process_data().
+If you need to retrieve the limits that are being applied, use
+
+   width_max = png_get_user_width_max(png_ptr);
+   height_max = png_get_user_height_max(png_ptr);
+
 Unknown-chunk handling
 
 Now you get to set the way the library processes unknown chunks in the
@@ -747,7 +771,7 @@ unless the library has been told to transform it into another format.
 For example, 4 bit/pixel paletted or grayscale data will be returned
 2 pixels/byte with the leftmost pixel in the high-order bits of the
 byte, unless png_set_packing() is called.  8-bit RGB data will be stored
-in RGB RGB RGB format unless png_set_filler()
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
 is called to insert filler bytes, either before or after each RGB triplet.
 16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
 byte of the color value first, unless png_set_strip_16() is called to
@@ -755,7 +779,7 @@ transform it to regular RGB RGB triplets, or png_set_filler() or
 png_set_add alpha() is called to insert filler bytes, either before or
 after each RRGGBB triplet.  Similarly, 8-bit or 16-bit grayscale data can
 be modified with
-png_set_filler() or png_set_strip_16().
+png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
 
 The following code transforms grayscale images of less than 8 to 8 bits,
 changes paletted images to RGB, and adds a full alpha channel if there is
@@ -767,7 +791,7 @@ viewing application that wishes to treat all images in the same way.
         png_set_palette_to_rgb(png_ptr);
 
     if (color_type == PNG_COLOR_TYPE_GRAY &&
-        bit_depth < 8) png_set_gray_1_2_4_to_8(png_ptr);
+        bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
 
     if (png_get_valid(png_ptr, info_ptr,
         PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
@@ -777,6 +801,11 @@ in libpng version 1.0.4, with the function names expanded to improve code
 readability.  In some future version they may actually do different
 things.
 
+As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
+added.  It expands the sample depth without changing tRNS to alpha.
+At the same time, png_set_gray_1_2_4_to_8() was deprecated, and it
+will be removed from a future version.
+
 PNG can have files with 16 bits per channel.  If you only can handle
 8 bits per channel, this will strip the pixels down to 8 bit.
 
@@ -840,7 +869,16 @@ does not affect images that already have full alpha channels.  To add an
 opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
 will generate RGBA pixels.
 
+Note that png_set_filler() does not change the color type.  If you want
+to do that, you can add a true alpha channel with
+
+    if (color_type == PNG_COLOR_TYPE_RGB ||
            color_type == PNG_COLOR_TYPE_GRAY)
+    png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
 If you are reading an image with an alpha channel, and you need the
 data as ARGB instead of the normal PNG format RGBA:
 
@@ -2317,13 +2355,17 @@ For a more compact example of writing a PNG image, see the file example.c.
 
 V. Modifying/Customizing libpng:
 
-There are two issues here.  The first is changing how libpng does
+There are three issues here.  The first is changing how libpng does
 standard things like memory allocation, input/output, and error handling.
 The second deals with more complicated things like adding new chunks,
 adding new transformations, and generally changing how libpng works.
 Both of those are compile-time issues; that is, they are generally
 determined at the time the code is written, and there is rarely a need
-to provide the user with a means of changing them.
+to provide the user with a means of changing them.  The third is a
+run-time issue:  choosing between and/or tuning one or more alternate
+versions of computationally intensive routines; specifically, optimized
+assembly-language (and therefore compiler- and platform-dependent)
+versions.
 
 Memory allocation, input/output, and error handling
 
@@ -2684,6 +2726,172 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
 having level = 0 will be printed.  There aren't any such statements in
 this version of libpng, but if you insert some they will be printed.
 
+VI.  Runtime optimization
+
+A new feature in libpng 1.2.0 is the ability to dynamically switch between
+standard and optimized versions of some routines.  Currently these are
+limited to three computationally intensive tasks when reading PNG files:
+decoding row filters, expanding interlacing, and combining interlaced or
+transparent row data with previous row data.  Currently the optimized
+versions are available only for x86 (Intel, AMD, etc.) platforms with
+MMX support, though this may change in future versions.  (For example,
+the non-MMX assembler optimizations for zlib might become similarly
+runtime-selectable in future releases, in which case libpng could be
+extended to support them.  Alternatively, the compile-time choice of
+floating-point versus integer routines for gamma correction might become
+runtime-selectable.)
+
+Because such optimizations tend to be very platform- and compiler-dependent,
+both in how they are written and in how they perform, the new runtime code
+in libpng has been written to allow programs to query, enable, and disable
+either specific optimizations or all such optimizations.  For example, to
+enable all possible optimizations (bearing in mind that some "optimizations"
+may actually run more slowly in rare cases):
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       png_uint_32 mask, flags;
+
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags | mask);
+    #endif
+
+To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
+by itself when calling png_get_asm_flagmask(); similarly for optimizing
+only writing.  To disable all optimizations:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags & ~mask);
+    #endif
+
+To enable or disable only MMX-related features, use png_get_mmx_flagmask()
+in place of png_get_asm_flagmask().  The mmx version takes one additional
+parameter:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
+       int compilerID;
+
+       mask = png_get_mmx_flagmask(selection, &compilerID);
+    #endif
+
+On return, compilerID will indicate which version of the MMX assembler
+optimizations was compiled.  Currently two flavors exist:  Microsoft
+Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
+On non-x86 platforms or on systems compiled without MMX optimizations, a
+value of -1 is used.
+
+Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
+all valid, settable optimization bits for the version of the library that's
+currently in use.  In the case of shared (dynamically linked) libraries,
+this may include optimizations that did not exist at the time the code was
+written and compiled.  It is also possible, of course, to enable only known,
+specific optimizations; for example:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) && \
+       defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+       flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+       png_set_asm_flags(png_ptr, flags);
+    #endif
+
+This method would enable only the MMX read-optimizations available at the
+time of libpng 1.2.0's release, regardless of whether a later version of
+the DLL were actually being used.  (Also note that these functions did not
+exist in versions older than 1.2.0, so any attempt to run a dynamically
+linked app on such an older version would fail.)
+
+To determine whether the processor supports MMX instructions at all, use
+the png_mmx_support() function:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       mmxsupport = png_mmx_support();
+    #endif
+
+It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
+is compiled but MMX is not supported by the processor, or 1 if MMX support
+is fully available.  Note that png_mmx_support(), png_get_mmx_flagmask(),
+and png_get_asm_flagmask() all may be called without allocating and ini-
+tializing any PNG structures (for example, as part of a usage screen or
+"about" box).
+
+The following code can be used to prevent an application from using the
+thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK
+defined:
+
+#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
+  && defined(PNG_THREAD_UNSAFE_OK)
+    /* Disable thread-unsafe features of pnggccrd */
+    if (png_access_version_number() >= 10200)
+    {
+      png_uint_32 mmx_disable_mask = 0;
+      png_uint_32 asm_flags;
+
+      mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+      asm_flags = png_get_asm_flags(png_ptr);
+      png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
+    }
+#endif
+
+For more extensive examples of runtime querying, enabling and disabling
+of optimized features, see contrib/gregbook/readpng2.c in the libpng
+source-code distribution.
+
+It is also possible to disable or enable specific optimization features
+at compile time.  To disable them entirely, which may result in slower
+but smaller and less complex and troublesome code, define
+
+     PNG_NO_ASSEMBLER_CODE
+
+If you do this, then the run-time code for setting and querying flags
+described above, and the assembler code in pnggccrd.c or pngvcrd.c will
+not be built.
+
+If you have disabled the assembler code, you can also disable the
+optimized C code, to obtain even slower but smaller code, by defining
+
+     PNG_NO_OPTIMZED_CODE
+
+To disable only the MMX assembler code, define
+
+     PNG_NO_MMX_CODE
+
+There are two versions of the MMX code: one for gcc compilers and one for
+MSVC compilers.  Pngconf.h should automatically detect which you are
+using, and it will set either PNG_USE_PNGGCCRD or PNG_USE_PNGVCRD for you.
+
+Define one or more of the following to disable specific parts of the
+assembler code:
+
+     PNG_NO_MMX_COMBINE_ROW
+     PNG_NO_MMX_READ_INTERLACE
+     PNG_NO_MMX_READ_FILTER_ROW
+
+If the latter is not disabled, you can disable one or more of the
+individual filter types by defining
+
+     PNG_NO_MMX_FILTER_SUB
+     PNG_NO_MMX_FILTER_UP
+     PNG_NO_MMX_FILTER_AVG
+     PNG_NO_MMX_FILTER_PAETH
+
+By default, libpng only enables the "sub" filter when gcc-3.x is used
+because experiments show that gcc-3.x produces bad code for the others.
+
+When you disable various MMX features, libpng will still be able to decode
+files with those features.  It will fall back upon the optimized C code
+or the unoptimized C code to decode them.
+
+
 VII.  MNG support
 
 The MNG specification (available at http://www.libpng.org/pub/mng) allows
@@ -2709,7 +2917,7 @@ or any other MNG chunks; your application must provide its own support for
 them.  You may wish to consider using libmng (available at
 http://www.libmng.com) instead.
 
-VII.  Changes to Libpng from version 0.88
+VIII.  Changes to Libpng from version 0.88
 
 It should be noted that versions of libpng later than 0.96 are not
 distributed by the original libpng author, Guy Schalnat, nor by
@@ -2758,15 +2966,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-VIII. Y2K Compliance in libpng
+IX. Y2K Compliance in libpng
 
-February 18, 2008
+August 20, 2007
 
 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 1.0.31 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.20beta02 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

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "February 18, 2008"
+.TH LIBPNG 3 "August 20, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.31
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.20beta02
 .SH SYNOPSIS
 \fB
 #include <png.h>\fP
@@ -410,10 +410,10 @@ 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 1.0.31 - February 18, 2008
+ libpng version 1.2.20beta02 - August 20, 2007
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ Copyright (c) 1998-2007 Glenn Randers-Pehrson
  For conditions of distribution and use, see copyright
  notice in png.h.
 
@@ -496,7 +496,9 @@ Libpng is thread safe, provided the threads are using different
 instances of the structures.  Each thread should have its own
 png_struct and png_info instances, and thus its own image.
 Libpng does not protect itself against two threads using the
-same instance of a structure.
+same instance of a structure.  Note: thread safety may be defeated
+by use of some of the MMX assembler code in pnggccrd.c, which is only
+compiled when the user defines PNG_THREAD_UNSAFE_OK.
 
 .SH II. Structures
 
@@ -715,6 +717,28 @@ To inform libpng about your function, use
 
     png_set_read_status_fn(png_ptr, read_row_callback);
 
+.SS Width and height limits
+
+The PNG specification allows the width and height of an image to be as
+large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
+Since very few applications really need to process such large images,
+we have imposed an arbitrary 1-million limit on rows and columns.
+Larger images will be rejected immediately with a png_error() call. If
+you wish to override this limit, you can use
+
+   png_set_user_limits(png_ptr, width_max, height_max);
+
+to set your own limits, or use width_max = height_max = 0x7fffffffL
+to allow all valid dimensions (libpng may reject some very large images
+anyway because of potential buffer overflow conditions).
+
+You should put this statement after you create the PNG structure and
+before calling png_read_info(), png_read_png(), or png_process_data().
+If you need to retrieve the limits that are being applied, use
+
+   width_max = png_get_user_width_max(png_ptr);
+   height_max = png_get_user_height_max(png_ptr);
+
 .SS Unknown-chunk handling
 
 Now you get to set the way the library processes unknown chunks in the
@@ -1157,7 +1181,7 @@ unless the library has been told to transform it into another format.
 For example, 4 bit/pixel paletted or grayscale data will be returned
 2 pixels/byte with the leftmost pixel in the high-order bits of the
 byte, unless png_set_packing() is called.  8-bit RGB data will be stored
-in RGB RGB RGB format unless png_set_filler()
+in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
 is called to insert filler bytes, either before or after each RGB triplet.
 16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
 byte of the color value first, unless png_set_strip_16() is called to
@@ -1165,7 +1189,7 @@ transform it to regular RGB RGB triplets, or png_set_filler() or
 png_set_add alpha() is called to insert filler bytes, either before or
 after each RRGGBB triplet.  Similarly, 8-bit or 16-bit grayscale data can
 be modified with
-png_set_filler() or png_set_strip_16().
+png_set_filler(), png_set_add_alpha(), or png_set_strip_16().
 
 The following code transforms grayscale images of less than 8 to 8 bits,
 changes paletted images to RGB, and adds a full alpha channel if there is
@@ -1177,7 +1201,7 @@ viewing application that wishes to treat all images in the same way.
         png_set_palette_to_rgb(png_ptr);
 
     if (color_type == PNG_COLOR_TYPE_GRAY &&
-        bit_depth < 8) png_set_gray_1_2_4_to_8(png_ptr);
+        bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
 
     if (png_get_valid(png_ptr, info_ptr,
         PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
@@ -1187,6 +1211,11 @@ in libpng version 1.0.4, with the function names expanded to improve code
 readability.  In some future version they may actually do different
 things.
 
+As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
+added.  It expands the sample depth without changing tRNS to alpha.
+At the same time, png_set_gray_1_2_4_to_8() was deprecated, and it
+will be removed from a future version.
+
 PNG can have files with 16 bits per channel.  If you only can handle
 8 bits per channel, this will strip the pixels down to 8 bit.
 
@@ -1250,7 +1279,16 @@ does not affect images that already have full alpha channels.  To add an
 opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
 will generate RGBA pixels.
 
+Note that png_set_filler() does not change the color type.  If you want
+to do that, you can add a true alpha channel with
+
+    if (color_type == PNG_COLOR_TYPE_RGB ||
            color_type == PNG_COLOR_TYPE_GRAY)
+    png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
+
+where "filler" contains the alpha value to assign to each pixel.
+This function was added in libpng-1.2.7.
+
 If you are reading an image with an alpha channel, and you need the
 data as ARGB instead of the normal PNG format RGBA:
 
@@ -2727,13 +2765,17 @@ For a more compact example of writing a PNG image, see the file example.c.
 
 .SH V. Modifying/Customizing libpng:
 
-There are two issues here.  The first is changing how libpng does
+There are three issues here.  The first is changing how libpng does
 standard things like memory allocation, input/output, and error handling.
 The second deals with more complicated things like adding new chunks,
 adding new transformations, and generally changing how libpng works.
 Both of those are compile-time issues; that is, they are generally
 determined at the time the code is written, and there is rarely a need
-to provide the user with a means of changing them.
+to provide the user with a means of changing them.  The third is a
+run-time issue:  choosing between and/or tuning one or more alternate
+versions of computationally intensive routines; specifically, optimized
+assembly-language (and therefore compiler- and platform-dependent)
+versions.
 
 Memory allocation, input/output, and error handling
 
@@ -3094,6 +3136,172 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
 having level = 0 will be printed.  There aren't any such statements in
 this version of libpng, but if you insert some they will be printed.
 
+.SH VI.  Runtime optimization
+
+A new feature in libpng 1.2.0 is the ability to dynamically switch between
+standard and optimized versions of some routines.  Currently these are
+limited to three computationally intensive tasks when reading PNG files:
+decoding row filters, expanding interlacing, and combining interlaced or
+transparent row data with previous row data.  Currently the optimized
+versions are available only for x86 (Intel, AMD, etc.) platforms with
+MMX support, though this may change in future versions.  (For example,
+the non-MMX assembler optimizations for zlib might become similarly
+runtime-selectable in future releases, in which case libpng could be
+extended to support them.  Alternatively, the compile-time choice of
+floating-point versus integer routines for gamma correction might become
+runtime-selectable.)
+
+Because such optimizations tend to be very platform- and compiler-dependent,
+both in how they are written and in how they perform, the new runtime code
+in libpng has been written to allow programs to query, enable, and disable
+either specific optimizations or all such optimizations.  For example, to
+enable all possible optimizations (bearing in mind that some "optimizations"
+may actually run more slowly in rare cases):
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       png_uint_32 mask, flags;
+
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags | mask);
+    #endif
+
+To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
+by itself when calling png_get_asm_flagmask(); similarly for optimizing
+only writing.  To disable all optimizations:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags & ~mask);
+    #endif
+
+To enable or disable only MMX-related features, use png_get_mmx_flagmask()
+in place of png_get_asm_flagmask().  The mmx version takes one additional
+parameter:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
+       int compilerID;
+
+       mask = png_get_mmx_flagmask(selection, &compilerID);
+    #endif
+
+On return, compilerID will indicate which version of the MMX assembler
+optimizations was compiled.  Currently two flavors exist:  Microsoft
+Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
+On non-x86 platforms or on systems compiled without MMX optimizations, a
+value of -1 is used.
+
+Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
+all valid, settable optimization bits for the version of the library that's
+currently in use.  In the case of shared (dynamically linked) libraries,
+this may include optimizations that did not exist at the time the code was
+written and compiled.  It is also possible, of course, to enable only known,
+specific optimizations; for example:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200) && \
+       defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+       flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+       png_set_asm_flags(png_ptr, flags);
+    #endif
+
+This method would enable only the MMX read-optimizations available at the
+time of libpng 1.2.0's release, regardless of whether a later version of
+the DLL were actually being used.  (Also note that these functions did not
+exist in versions older than 1.2.0, so any attempt to run a dynamically
+linked app on such an older version would fail.)
+
+To determine whether the processor supports MMX instructions at all, use
+the png_mmx_support() function:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       mmxsupport = png_mmx_support();
+    #endif
+
+It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
+is compiled but MMX is not supported by the processor, or 1 if MMX support
+is fully available.  Note that png_mmx_support(), png_get_mmx_flagmask(),
+and png_get_asm_flagmask() all may be called without allocating and ini-
+tializing any PNG structures (for example, as part of a usage screen or
+"about" box).
+
+The following code can be used to prevent an application from using the
+thread_unsafe features, even if libpng was built with PNG_THREAD_UNSAFE_OK
+defined:
+
+#if defined(PNG_USE_PNGGCCRD) && defined(PNG_ASSEMBLER_CODE_SUPPORTED) \
+  && defined(PNG_THREAD_UNSAFE_OK)
+    /* Disable thread-unsafe features of pnggccrd */
+    if (png_access_version_number() >= 10200)
+    {
+      png_uint_32 mmx_disable_mask = 0;
+      png_uint_32 asm_flags;
+
+      mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                          | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+      asm_flags = png_get_asm_flags(png_ptr);
+      png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
+    }
+#endif
+
+For more extensive examples of runtime querying, enabling and disabling
+of optimized features, see contrib/gregbook/readpng2.c in the libpng
+source-code distribution.
+
+It is also possible to disable or enable specific optimization features
+at compile time.  To disable them entirely, which may result in slower
+but smaller and less complex and troublesome code, define
+
+     PNG_NO_ASSEMBLER_CODE
+
+If you do this, then the run-time code for setting and querying flags
+described above, and the assembler code in pnggccrd.c or pngvcrd.c will
+not be built.
+
+If you have disabled the assembler code, you can also disable the
+optimized C code, to obtain even slower but smaller code, by defining
+
+     PNG_NO_OPTIMZED_CODE
+
+To disable only the MMX assembler code, define
+
+     PNG_NO_MMX_CODE
+
+There are two versions of the MMX code: one for gcc compilers and one for
+MSVC compilers.  Pngconf.h should automatically detect which you are
+using, and it will set either PNG_USE_PNGGCCRD or PNG_USE_PNGVCRD for you.
+
+Define one or more of the following to disable specific parts of the
+assembler code:
+
+     PNG_NO_MMX_COMBINE_ROW
+     PNG_NO_MMX_READ_INTERLACE
+     PNG_NO_MMX_READ_FILTER_ROW
+
+If the latter is not disabled, you can disable one or more of the
+individual filter types by defining
+
+     PNG_NO_MMX_FILTER_SUB
+     PNG_NO_MMX_FILTER_UP
+     PNG_NO_MMX_FILTER_AVG
+     PNG_NO_MMX_FILTER_PAETH
+
+By default, libpng only enables the "sub" filter when gcc-3.x is used
+because experiments show that gcc-3.x produces bad code for the others.
+
+When you disable various MMX features, libpng will still be able to decode
+files with those features.  It will fall back upon the optimized C code
+or the unoptimized C code to decode them.
+
+
 .SH VII.  MNG support
 
 The MNG specification (available at http://www.libpng.org/pub/mng) allows
@@ -3119,7 +3327,7 @@ or any other MNG chunks; your application must provide its own support for
 them.  You may wish to consider using libmng (available at
 http://www.libmng.com) instead.
 
-.SH VII.  Changes to Libpng from version 0.88
+.SH VIII.  Changes to Libpng from version 0.88
 
 It should be noted that versions of libpng later than 0.96 are not
 distributed by the original libpng author, Guy Schalnat, nor by
@@ -3168,15 +3376,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-.SH VIII. Y2K Compliance in libpng
+.SH IX. Y2K Compliance in libpng
 
-February 18, 2008
+August 20, 2007
 
 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 1.0.31 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.20beta02 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
@@ -3370,28 +3578,7 @@ the first widely used release:
  1.2.19rc1-6         13    10219  12.so.0.19[.0]
  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]
- 1.0.28rc1-6         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]
+ 1.2.20beta01-02     13    10220  12.so.0.20[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3447,7 +3634,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.0.31 - February 18, 2008:
+Libpng version 1.2.20beta02 - August 20, 2007:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -3468,8 +3655,8 @@ 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 1.0.31, February 18, 2008, are
-Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.2.20beta02, August 20, 2007, are
+Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
 
@@ -3567,7 +3754,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-February 18, 2008
+August 20, 2007
 
 .\" end of man page
 

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "February 18, 2008"
+.TH LIBPNGPF 3 "August 20, 2007"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.31
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.20beta02
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "February 18, 2008"
+.TH PNG 5 "August 20, 2007"
 .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 1.2.21 October 4, 2007
+ * Last changed in libpng 1.2.19 August 20, 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_0_31 Your_png_h_is_not_version_1_0_31;
+typedef version_1_2_20beta02 Your_png_h_is_not_version_1_2_20beta02;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -67,6 +67,11 @@ PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
 /* offset to next interlace block in the y direction */
 PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
 
+/* width of interlace block (used in assembler routines only) */
+#if defined(PNG_HAVE_MMX_COMBINE_ROW) || defined(PNG_OPTIMIZED_CODE_SUPPORTED)
+PNG_CONST int FARDATA png_pass_width[] = {8, 4, 4, 2, 2, 1, 1};
+#endif
+
 /* Height of interlace block.  This is not currently used - if you need
  * it, uncomment it here and in png.h
 PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
@@ -693,8 +698,8 @@ 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 1.0.31 - February 18, 2008\n\
-   Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
+   return ((png_charp) "\n libpng version 1.2.20beta02 - August 20, 2007\n\
+   Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
 }
@@ -729,10 +734,52 @@ 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
-#ifndef PNG_READ_SUPPORTED
-   "     (NO READ SUPPORT)"
+#ifdef PNG_READ_SUPPORTED
+#  ifdef PNG_USE_PNGGCCRD
+#    ifdef __x86_64__
+#      ifdef __PIC__
+   "     (PNGGCRD x86_64, PIC)\n"
+#      else
+#        ifdef PNG_THREAD_UNSAFE_OK
+   "     (PNGGCRD x86_64, Thread unsafe)\n"
+#        else
+   "     (PNGGCRD x86_64, Thread safe)\n"
+#        endif
+#      endif
+#    else
+#    ifdef PNG_THREAD_UNSAFE_OK
+   "     (PNGGCRD, Thread unsafe)\n"
+#      else
+   "     (PNGGCRD, Thread safe)\n"
+#      endif
+#    endif
+#  else
+#    ifdef PNG_USE_PNGVCRD
+#      ifdef __x86_64__
+   "     (x86_64 PNGVCRD)\n"
+#      else
+   "     (PNGVCRD)\n"
+#      endif
+#    else
+#      ifdef __x86_64__
+#        ifdef PNG_OPTIMIZED_CODE_SUPPORTED
+   "     (x86_64 OPTIMIZED)\n"
+#        else
+   "     (x86_64 NOT OPTIMIZED)\n"
+#        endif
+#      else
+#        ifdef PNG_OPTIMIZED_CODE_SUPPORTED
+   "     (OPTIMIZED)\n"
+#        else
+   "     (NOT OPTIMIZED)\n"
+#        endif
+#      endif
+#    endif
+#  endif
+#else
+   "     (NO READ SUPPORT)\n"
 #endif
-   "\n");
+   );
 }
 
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
@@ -773,13 +820,63 @@ png_access_version_number(void)
 
 #if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
 #if !defined(PNG_1_0_X)
+#if defined(PNG_MMX_CODE_SUPPORTED)
+/* this INTERNAL function was added to libpng 1.2.0 */
+void /* PRIVATE */
+png_init_mmx_flags (png_structp png_ptr)
+{
+    if(png_ptr == NULL) return;
+    png_ptr->mmx_rowbytes_threshold = 0;
+    png_ptr->mmx_bitdepth_threshold = 0;
+
+#  if (defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD))
+
+    png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_COMPILED;
+
+    if (png_mmx_support() > 0) {
+        png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+#    ifdef PNG_HAVE_MMX_COMBINE_ROW
+                              | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+#    endif
+#    ifdef PNG_HAVE_MMX_READ_INTERLACE
+                              | PNG_ASM_FLAG_MMX_READ_INTERLACE
+#    endif
+#    ifndef PNG_HAVE_MMX_READ_FILTER_ROW
+                              ;
+#    else
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_UP
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+
+        png_ptr->mmx_rowbytes_threshold = PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT;
+        png_ptr->mmx_bitdepth_threshold = PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT;
+#    endif
+    } else {
+        png_ptr->asm_flags &= ~( PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+                               | PNG_MMX_READ_FLAGS
+                               | PNG_MMX_WRITE_FLAGS );
+    }
+
+#  else /* !(PNGVCRD || PNGGCCRD) */
+
+    /* clear all MMX flags; no support is compiled in */
+    png_ptr->asm_flags &= ~( PNG_MMX_FLAGS );
+
+#  endif /* ?(PNGVCRD || PNGGCCRD) */
+}
+
+#endif /* !(PNG_MMX_CODE_SUPPORTED) */
+
 /* this function was added to libpng 1.2.0 */
+#if !defined(PNG_USE_PNGGCCRD) && \
+    !(defined(PNG_MMX_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD))
 int PNGAPI
 png_mmx_support(void)
 {
-   /* obsolete, to be removed from libpng-1.4.0 */
     return -1;
 }
+#endif
 #endif /* PNG_1_0_X */
 #endif /* PNG_READ_SUPPORTED && PNG_ASSEMBLER_CODE_SUPPORTED */
 

png.h

@@ -1,15 +1,15 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.0.31 - February 18, 2008
- * Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ * libpng version 1.2.20beta02 - August 20, 2007
+ * 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.)
  *
  * 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 1.0.31 - February 18, 2008: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.20beta02 - August 20, 2007: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -155,28 +155,7 @@
  *    1.2.19rc1-6             13    10219  12.so.0.19[.0]
  *    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]
- *    1.0.28rc1-6             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]
+ *    1.2.20beta01-02         13    10220  12.so.0.20[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -206,8 +185,8 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.2.6, August 15, 2004, through 1.0.31, February 18, 2008, are
- * Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.2.20beta02, August 20, 2007, are
+ * Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
  *
@@ -318,13 +297,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    February 18, 2008
+ *    August 20, 2007
  *
  *    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 1.0.31 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.20beta02 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
@@ -380,21 +359,21 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.31"
+#define PNG_LIBPNG_VER_STRING "1.2.20beta02"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.31 - February 18, 2008\n"
+   " libpng version 1.2.20beta02 - August 20, 2007\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
-#define PNG_LIBPNG_VER_DLLNUM  10
+#define PNG_LIBPNG_VER_DLLNUM  13
 
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   0
-#define PNG_LIBPNG_VER_RELEASE 31
+#define PNG_LIBPNG_VER_MINOR   2
+#define PNG_LIBPNG_VER_RELEASE 20
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  02
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -411,14 +390,14 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
  * 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 10031 /* 1.0.31 */
+#define PNG_LIBPNG_VER 10220 /* 1.2.20 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 /* include the compression library's header */
@@ -521,6 +500,9 @@ PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_ystart[7];
 PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_yinc[7];
 PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_mask[7];
 PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_dsp_mask[7];
+#if defined(PNG_HAVE_MMX_COMBINE_ROW) || defined(PNG_OPTIMIZED_CODE_SUPPORTED)
+PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_width[7];
+#endif
 /* This isn't currently used.  If you need it, see png.c for more details.
 PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_height[7];
 */
@@ -659,10 +641,9 @@ 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[PNG_CHUNK_NAME_LENGTH];
+    png_byte name[5];
     png_byte *data;
     png_size_t size;
 
@@ -1189,12 +1170,10 @@ 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 */
@@ -1296,7 +1275,8 @@ struct png_struct_def
      png_size_t current_text_left;   /* how much text left to read in input */
      png_charp current_text;         /* current text chunk buffer */
      png_charp current_text_ptr;     /* current location in current_text */
-#  endif /* PNG_TEXT_SUPPORTED */
+#  endif /* PNG_PROGRESSIVE_READ_SUPPORTED && PNG_TEXT_SUPPORTED */
+
 #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
 
 #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
@@ -1432,7 +1412,7 @@ struct png_struct_def
 /* 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_0_31;
+typedef png_structp version_1_2_20beta02;
 
 typedef png_struct FAR * FAR * png_structpp;
 

pngconf.h

@@ -1,9 +1,9 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.0.31 - February 18, 2008
+ * libpng version 1.2.20beta02 - August 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  */
@@ -17,12 +17,18 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
-#define PNG_1_0_X
+#define PNG_1_2_X
 
 /* 
  * PNG_USER_CONFIG has to be defined on the compiler command line. This
  * includes the resource compiler for Windows DLL configurations.
  */
+#ifdef PNG_USER_CONFIG
+#  ifndef PNG_USER_PRIVATEBUILD
+#    define PNG_USER_PRIVATEBUILD
+#  endif
+#include "pngusr.h"
+#endif
 
 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */
 #ifdef PNG_CONFIGURE_LIBPNG
@@ -70,12 +76,9 @@
 /* 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
-   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 */
+#    define PNG_WARN_UNINITIALIZED_ROW 1
+*/
+/* End of material added at libpng-1.2.19 */
 
 /* 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
@@ -317,7 +320,7 @@
      /* If you encounter a compiler error here, see the explanation
       * near the end of INSTALL.
       */
-         __pngconf.h__ already includes setjmp.h;
+         __png.h__ already includes setjmp.h;
          __dont__ include it again.;
 #    endif
 #  endif /* __linux__ */
@@ -327,9 +330,7 @@
 
 #  ifdef __linux__
 #    ifdef PNG_SAVE_BSD_SOURCE
-#      ifndef _BSD_SOURCE
-#        define _BSD_SOURCE
-#      endif
+#      define _BSD_SOURCE
 #      undef PNG_SAVE_BSD_SOURCE
 #    endif
 #  endif /* __linux__ */
@@ -599,10 +600,10 @@
 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
 
 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
- !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive   */
-#  define PNG_PROGRESSIVE_READ_SUPPORTED  /* reading.  This is not talking */
-#endif                            /* about interlacing capability!  You'll */
-           /* still have interlacing unless you change the following line: */
+ !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */
+#  define PNG_PROGRESSIVE_READ_SUPPORTED    /* reading.  This is not talking */
+#endif                              /* about interlacing capability!  You'll */
+             /* still have interlacing unless you change the following line: */
 
 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
 
@@ -726,8 +727,15 @@
 #endif
 
 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 
- * and removed from version 1.2.20.  The following will be removed
- * from libpng-1.4.0
+ * even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined.
+ *
+ * PNG_NO_ASSEMBLER_CODE disables use of all assembler code,
+ * and removes several functions from the API.
+ *
+ * PNG_NO_MMX_CODE disables the use of MMX code without changing the API.
+ * When MMX code is off, then optimized C replacement functions are used,
+ * if PNG_NO_OPTIMIZED_CODE is not enabled.  This was added in version
+ * 1.2.19.
 */
 
 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
@@ -741,31 +749,32 @@
 #    define PNG_ASSEMBLER_CODE_SUPPORTED
 #  endif
 
-#  if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
-     /* work around 64-bit gcc compiler bugs in gcc-3.x */
-#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
-#      define PNG_NO_MMX_CODE
-#    endif
-#  endif
-
 #  if defined(__APPLE__)
 #    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 #      define PNG_NO_MMX_CODE
 #    endif
 #  endif
 
-#  if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
-#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
-#      define PNG_NO_MMX_CODE
-#    endif
-#  endif
-
 #  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
 #    define PNG_MMX_CODE_SUPPORTED
 #  endif
 
+#  if !defined(PNG_USE_PNGVCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \
+     defined(_MSC_VER)
+#    define PNG_USE_PNGVCRD
+#  endif
+
+#  if !defined(PNG_USE_PNGGCCRD) && defined(PNG_MMX_CODE_SUPPORTED) && \
+     !defined(PNG_USE_PNGVCRD)
+#    define PNG_USE_PNGGCCRD
+     /* If you are sure that you don't need thread safety and you are compiling
+        with PNG_USE_PNGCCRD for an MMX application, you can define this for
+        faster execution.  See pnggccrd.c.
+#    define PNG_THREAD_UNSAFE_OK
+     */
+#  endif
+
 #endif
-/* end of obsolete code to be removed from libpng-1.4.0 */
 
 #if !defined(PNG_1_0_X)
 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
@@ -1426,6 +1435,8 @@ 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
@@ -1454,6 +1465,8 @@ 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
@@ -1469,6 +1482,56 @@ typedef z_stream FAR *  png_zstreamp;
 #  define PNG_ZBUF_SIZE 65536L
 #endif
 
+#ifdef PNG_READ_SUPPORTED
+/* Prior to libpng-1.0.9, this block was in pngasmrd.h */
+#if defined(PNG_INTERNAL)
+
+#if defined(PNG_USE_PNGGCCRD) || defined(PNG_USE_PNGVCRD)
+  /* Platform must be Pentium.  Makefile must assemble and load
+   * pnggccrd.c or  pngvcrd.c. MMX will be detected at run time and
+   * used if present.
+   */
+#  ifndef PNG_NO_MMX_COMBINE_ROW
+#    define PNG_HAVE_MMX_COMBINE_ROW
+#  endif
+#  ifndef PNG_NO_MMX_READ_INTERLACE
+#    define PNG_HAVE_MMX_READ_INTERLACE
+#  endif
+#  ifndef PNG_NO_MMX_READ_FILTER_ROW
+#    define PNG_HAVE_MMX_READ_FILTER_ROW
+#    ifndef PNG_NO_MMX_FILTER_SUB
+#      define PNG_MMX_READ_FILTER_SUB_SUPPORTED
+#    endif
+#    if !(defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4))
+       /* work around 64-bit gcc compiler bugs in gcc-3.x */
+#      ifndef PNG_NO_MMX_FILTER_UP
+#        define PNG_MMX_READ_FILTER_UP_SUPPORTED
+#      endif
+#      ifndef PNG_NO_MMX_FILTER_AVG
+#        define PNG_MMX_READ_FILTER_AVG_SUPPORTED
+#      endif
+#      ifndef PNG_NO_MMX_FILTER_PAETH
+#        define PNG_MMX_READ_FILTER_PAETH_SUPPORTED
+#      endif
+#    endif /* !((__x86_64__) && (GNUC < 4)) */
+#  endif
+  /* These are the default thresholds before the MMX code kicks in; if either
+   * rowbytes or bitdepth is below the threshold, plain C code is used.  These
+   * can be overridden at runtime via the png_set_mmx_thresholds() call in
+   * libpng 1.2.0 and later.  The values below were chosen by Intel.
+   */
+#  ifndef PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT
+#    define PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT  128  /*  >=  */
+#  endif
+#  ifndef PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT
+#    define PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT  9    /*  >=  */   
+#  endif
+#endif /* PNG_USE_PNGGCCRD || PNG_USE_PNGVCRD */
+/* - see pngvcrd.c or pnggccrd.c for info about what is currently enabled */
+
+#endif /* PNG_INTERNAL */
+#endif /* PNG_READ_SUPPORTED */
+
 /* Added at libpng-1.2.8 */
 #endif /* PNG_VERSION_INFO_ONLY */
 

pngerror.c

@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.22 [October 13, 2007]
+ * Last changed in libpng 1.2.19 August 20, 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)
@@ -136,8 +136,6 @@ 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
@@ -162,13 +160,13 @@ 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_memcpy(buffer+iout, error_message, PNG_MAX_ERROR_TEXT);
-      buffer[iout+PNG_MAX_ERROR_TEXT-1] = '\0';
+      png_strncpy(buffer+iout, error_message, 63);
+      buffer[iout+63] = 0;
    }
 }
 
@@ -176,7 +174,7 @@ 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+PNG_MAX_ERROR_TEXT];
+   char msg[18+64];
    if (png_ptr == NULL)
      png_error(png_ptr, error_message);
    else
@@ -192,7 +190,7 @@ 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+PNG_MAX_ERROR_TEXT];
+   char msg[18+64];
    if (png_ptr == NULL)
      png_warning(png_ptr, warning_message);
    else

pngget.c

@@ -841,44 +841,105 @@ png_get_compression_buffer_size(png_structp png_ptr)
 png_uint_32 PNGAPI
 png_get_asm_flags (png_structp png_ptr)
 {
-    /* obsolete, to be removed from libpng-1.4.0 */
+#ifdef PNG_MMX_CODE_SUPPORTED
+    return (png_uint_32)(png_ptr? png_ptr->asm_flags : 0L);
+#else
     return (png_ptr? 0L: 0L);
+#endif
 }
 
 /* this function was added to libpng 1.2.0 and should exist by default */
 png_uint_32 PNGAPI
 png_get_asm_flagmask (int flag_select)
 {
-    /* obsolete, to be removed from libpng-1.4.0 */
-    flag_select=flag_select;
-    return 0L;
+#ifdef PNG_MMX_CODE_SUPPORTED
+    png_uint_32 settable_asm_flags = 0;
+
+    if (flag_select & PNG_SELECT_READ)
+        settable_asm_flags |=
+          PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+          PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+          /* no non-MMX flags yet */
+
+#if 0
+    /* GRR:  no write-flags yet, either, but someday... */
+    if (flag_select & PNG_SELECT_WRITE)
+        settable_asm_flags |=
+          PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+    return settable_asm_flags;  /* _theoretically_ settable capabilities only */
+#else
+    return (0L);
+#endif /* PNG_MMX_CODE_SUPPORTED */
 }
 
+
     /* GRR:  could add this:   && defined(PNG_MMX_CODE_SUPPORTED) */
 /* this function was added to libpng 1.2.0 */
 png_uint_32 PNGAPI
 png_get_mmx_flagmask (int flag_select, int *compilerID)
 {
-    /* obsolete, to be removed from libpng-1.4.0 */
-    flag_select=flag_select;
-    *compilerID = -1;   /* unknown (i.e., no asm/MMX code compiled) */
-    return 0L;
+#if defined(PNG_MMX_CODE_SUPPORTED)
+    png_uint_32 settable_mmx_flags = 0;
+
+    if (flag_select & PNG_SELECT_READ)
+        settable_mmx_flags |=
+          PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+          PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+#if 0
+    /* GRR:  no MMX write support yet, but someday... */
+    if (flag_select & PNG_SELECT_WRITE)
+        settable_mmx_flags |=
+          PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+    if (compilerID != NULL) {
+#ifdef PNG_USE_PNGVCRD
+        *compilerID = 1;    /* MSVC */
+#else
+#ifdef PNG_USE_PNGGCCRD
+        *compilerID = 2;    /* gcc/gas */
+#else
+        *compilerID = -1;   /* unknown (i.e., no asm/MMX code compiled) */
+#endif
+#endif
+    }
+
+    return settable_mmx_flags;  /* _theoretically_ settable capabilities only */
+#else
+    return (0L);
+#endif /* ?PNG_MMX_CODE_SUPPORTED */
 }
 
 /* this function was added to libpng 1.2.0 */
 png_byte PNGAPI
 png_get_mmx_bitdepth_threshold (png_structp png_ptr)
 {
-    /* obsolete, to be removed from libpng-1.4.0 */
+#if defined(PNG_MMX_CODE_SUPPORTED)
+    return (png_byte)(png_ptr? png_ptr->mmx_bitdepth_threshold : 0);
+#else
     return (png_ptr? 0: 0);
+#endif /* ?PNG_MMX_CODE_SUPPORTED */
 }
 
 /* this function was added to libpng 1.2.0 */
 png_uint_32 PNGAPI
 png_get_mmx_rowbytes_threshold (png_structp png_ptr)
 {
-    /* obsolete, to be removed from libpng-1.4.0 */
+#if defined(PNG_MMX_CODE_SUPPORTED)
+    return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
+#else
     return (png_ptr? 0L: 0L);
+#endif /* ?PNG_MMX_CODE_SUPPORTED */
 }
 #endif /* ?PNG_1_0_X */
 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */

pngpread.c

@@ -1,9 +1,9 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.19 August 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  */
@@ -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 || info_ptr == NULL) return;
+   if(png_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_IDAT, 4))
+   if (!png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
      if(png_ptr->mode & PNG_AFTER_IDAT)
         png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
 
@@ -273,7 +273,7 @@ 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_IDAT, 4))
+   else if (!png_memcmp(png_ptr->chunk_name, (png_bytep)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 +678,7 @@ 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_IDAT, 4))
+      if (png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
       {
          png_ptr->process_mode = PNG_READ_CHUNK_MODE;
          if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
@@ -1001,6 +1001,11 @@ png_read_push_finish_row(png_structp png_ptr)
    /* offset to next interlace block in the y direction */
    PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
 
+   /* Width of interlace block.  This is not currently used - if you need
+    * it, uncomment it here and in png.h
+   PNG_CONST int FARDATA png_pass_width[] = {8, 4, 4, 2, 2, 1, 1};
+   */
+
    /* Height of interlace block.  This is not currently used - if you need
     * it, uncomment it here and in png.h
    PNG_CONST int FARDATA png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
@@ -1018,37 +1023,32 @@ png_read_push_finish_row(png_structp png_ptr)
          png_ptr->rowbytes + 1);
       do
       {
-         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++;
+         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++;
 
-         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];
+         if (png_ptr->pass > 7)
+            png_ptr->pass--;
+         if (png_ptr->pass >= 7)
+            break;
 
-             png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
-                png_ptr->iwidth) + 1;
+         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];
 
-             if (png_ptr->transformations & PNG_INTERLACE)
-                break;
+         png_ptr->irowbytes = PNG_ROWBYTES(png_ptr->pixel_depth,
+            png_ptr->iwidth) + 1;
 
-             png_ptr->num_rows = (png_ptr->height +
-                png_pass_yinc[pass] - 1 -
-                png_pass_ystart[pass]) /
-                png_pass_yinc[pass];
-           }
-         else
-           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];
 
       } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
    }
@@ -1125,7 +1125,7 @@ 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,
@@ -1220,7 +1220,7 @@ 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);
@@ -1417,7 +1417,7 @@ 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 - 3)
+      if (lang != key + png_ptr->current_text_size)
          lang++;
 
       comp_flag = *lang++;
@@ -1427,14 +1427,10 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
          /* empty loop */ ;
       lang_key++;        /* skip NUL separator */
 
-      text=lang_key;
-      if (lang_key < key + png_ptr->current_text_size - 1)
-      {
-        for (; *text; text++)
-           /* empty loop */ ;
-      }
+      for (text = lang_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,
@@ -1472,61 +1468,59 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
    if (!(png_ptr->chunk_name[0] & 0x20))
    {
 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
-     if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
-          PNG_HANDLE_CHUNK_ALWAYS
+      if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+           PNG_HANDLE_CHUNK_ALWAYS
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-          && png_ptr->read_user_chunk_fn == NULL
+           && png_ptr->read_user_chunk_fn == NULL
 #endif
-        )
+         )
 #endif
-        png_chunk_error(png_ptr, "unknown critical chunk");
+         png_chunk_error(png_ptr, "unknown critical chunk");
 
-     info_ptr = info_ptr; /* to quiet some compiler warnings */
+      info_ptr = info_ptr; /* to quiet some compiler warnings */
    }
 
 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
    if (png_ptr->flags & PNG_FLAG_KEEP_UNKNOWN_CHUNKS)
    {
 #ifdef PNG_MAX_MALLOC_64K
-      if (length > (png_uint_32)65535L)
-      {
-          png_warning(png_ptr, "unknown chunk too large to fit in memory");
-          skip = length - (png_uint_32)65535L;
-          length = (png_uint_32)65535L;
-      }
+       if (length > (png_uint_32)65535L)
+       {
+           png_warning(png_ptr, "unknown chunk too large to fit in memory");
+           skip = length - (png_uint_32)65535L;
+           length = (png_uint_32)65535L;
+       }
 #endif
-      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);
+       png_strncpy((png_charp)png_ptr->unknown_chunk.name,
+	 (png_charp)png_ptr->chunk_name,
+         png_sizeof((png_charp)png_ptr->chunk_name));
+       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);
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-      if(png_ptr->read_user_chunk_fn != NULL)
-      {
-         /* callback to user unknown chunk handler */
-         int ret;
-         ret = (*(png_ptr->read_user_chunk_fn))
-           (png_ptr, &png_ptr->unknown_chunk);
-         if (ret < 0)
-            png_chunk_error(png_ptr, "error in user chunk");
-         if (ret == 0)
-         {
-            if (!(png_ptr->chunk_name[0] & 0x20))
-               if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
-                    PNG_HANDLE_CHUNK_ALWAYS)
-                  png_chunk_error(png_ptr, "unknown critical chunk");
-            png_set_unknown_chunks(png_ptr, info_ptr,
-               &png_ptr->unknown_chunk, 1);
-         }
-      }
-      else
+       if(png_ptr->read_user_chunk_fn != NULL)
+       {
+          /* callback to user unknown chunk handler */
+          int ret;
+          ret = (*(png_ptr->read_user_chunk_fn))
+            (png_ptr, &png_ptr->unknown_chunk);
+          if (ret < 0)
+             png_chunk_error(png_ptr, "error in user chunk");
+          if (ret == 0)
+          {
+             if (!(png_ptr->chunk_name[0] & 0x20))
+                if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
+                     PNG_HANDLE_CHUNK_ALWAYS)
+                   png_chunk_error(png_ptr, "unknown critical chunk");
+                png_set_unknown_chunks(png_ptr, info_ptr,
+                   &png_ptr->unknown_chunk, 1);
+          }
+       }
+#else
+       png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
 #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;
+       png_free(png_ptr, png_ptr->unknown_chunk.data);
+       png_ptr->unknown_chunk.data = NULL;
    }
    else
 #endif

pngread.c

@@ -1,9 +1,9 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.19 August 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  *
@@ -55,6 +55,12 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    if (png_ptr == NULL)
       return (NULL);
 
+#if !defined(PNG_1_0_X)
+#ifdef PNG_MMX_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+#endif /* PNG_1_0_X */
+
    /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
@@ -89,18 +95,12 @@ 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);
 
-   if(user_png_ver)
+   i=0;
+   do
    {
-     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
+     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)
    {
@@ -324,7 +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 || info_ptr == NULL) return;
+   if(png_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)
@@ -421,7 +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_IDAT, 4))
+      if (!png_memcmp(png_ptr->chunk_name, (png_bytep)png_IDAT, 4))
         if(png_ptr->mode & PNG_AFTER_IDAT)
           png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
 
@@ -1105,22 +1105,13 @@ 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 = NULL;
-   png_voidp mem_ptr = NULL;
+   png_free_ptr free_fn;
+   png_voidp mem_ptr;
 #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;
@@ -1128,6 +1119,11 @@ 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)
@@ -1159,13 +1155,16 @@ 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 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.19 August 20, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  *
@@ -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)) &&
@@ -964,14 +964,6 @@ 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
@@ -1046,9 +1038,6 @@ 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)
@@ -1086,10 +1075,6 @@ 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 */
 
@@ -3882,9 +3867,9 @@ 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;

pngset.c

@@ -1,9 +1,9 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.17 May 15, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  *
@@ -41,13 +41,7 @@ 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 ||
@@ -99,13 +93,6 @@ 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 ||
@@ -115,14 +102,25 @@ png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
         "Ignoring attempt to set negative chromaticity value");
       return;
    }
-   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 )
+#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
    {
       png_warning(png_ptr,
         "Ignoring attempt to set chromaticity value exceeding 21474.83");
@@ -224,7 +222,7 @@ 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,
@@ -488,7 +486,6 @@ 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);
 
@@ -500,9 +497,9 @@ 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;
@@ -682,20 +679,18 @@ 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;
 
-   length = png_strlen(name)+1;
-   new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
+   new_iccp_name = (png_charp)png_malloc_warn(png_ptr, png_strlen(name)+1);
    if (new_iccp_name == NULL)
    {
       png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
       return;
    }
-   png_memcpy(new_iccp_name, name, length);
+   png_strncpy(new_iccp_name, name, png_sizeof(new_iccp_name));
    new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen);
    if (new_iccp_profile == NULL)
    {
@@ -976,29 +971,28 @@ 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;
 
-        length = png_strlen(from->name) + 1;
-        to->name = (png_charp)png_malloc_warn(png_ptr, length);
+        to->name = (png_charp)png_malloc_warn(png_ptr,
+          png_strlen(from->name) + 1);
         if (to->name == NULL)
         {
            png_warning(png_ptr,
              "Out of memory while processing sPLT chunk");
-           continue;
         }
-        png_memcpy(to->name, from->name, length);
+        /* TODO: use png_malloc_warn */
+        png_strncpy(to->name, from->name, png_strlen(from->name));
         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;
     }
@@ -1043,11 +1037,7 @@ 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_memcpy((png_charp)to->name, 
-                   (png_charp)from->name, 
-                   png_sizeof(from->name));
-        to->name[png_sizeof(to->name)-1] = '\0';
-
+        png_strncpy((png_charp)to->name, (png_charp)from->name, 5);
         to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
         if (to->data == NULL)
         {
@@ -1092,7 +1082,7 @@ 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
@@ -1206,19 +1196,57 @@ 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);
 }
 
 
 #ifndef PNG_1_0_X
 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
-/* function was added to libpng 1.2.0 and should always exist by default */
+/* this function was added to libpng 1.2.0 and should always exist by default */
 void PNGAPI
 png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
 {
-/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
-    if (png_ptr != NULL)
-    png_ptr->asm_flags = 0;
+#ifdef PNG_MMX_CODE_SUPPORTED
+    png_uint_32 settable_asm_flags;
+    png_uint_32 settable_mmx_flags;
+#endif
+    if (png_ptr == NULL)
+       return;
+#ifdef PNG_MMX_CODE_SUPPORTED
+
+    settable_mmx_flags =
+#ifdef PNG_HAVE_MMX_COMBINE_ROW
+                         PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+#endif
+#ifdef PNG_HAVE_MMX_READ_INTERLACE
+                         PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+#endif
+#ifdef PNG_HAVE_MMX_READ_FILTER_ROW
+                         PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_PAETH |
+#endif
+                         0;
+
+    /* could be some non-MMX ones in the future, but not currently: */
+    settable_asm_flags = settable_mmx_flags;
+
+    if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) ||
+        !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU))
+    {
+        /* clear all MMX flags if MMX isn't supported */
+        settable_asm_flags &= ~settable_mmx_flags;
+        png_ptr->asm_flags &= ~settable_mmx_flags;
+    }
+
+    /* we're replacing the settable bits with those passed in by the user,
+     * so first zero them out of the master copy, then bitwise-OR in the
+     * allowed subset that was requested */
+
+    png_ptr->asm_flags &= ~settable_asm_flags;               /* zero them */
+    png_ptr->asm_flags |= (asm_flags & settable_asm_flags);  /* set them */
+#endif /* ?PNG_MMX_CODE_SUPPORTED */
 }
 
 /* this function was added to libpng 1.2.0 */
@@ -1227,9 +1255,12 @@ png_set_mmx_thresholds (png_structp png_ptr,
                         png_byte mmx_bitdepth_threshold,
                         png_uint_32 mmx_rowbytes_threshold)
 {
-/* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
     if (png_ptr == NULL)
        return;
+#ifdef PNG_MMX_CODE_SUPPORTED
+    png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold;
+    png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold;
+#endif /* ?PNG_MMX_CODE_SUPPORTED */
 }
 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
 

pngtest.c

@@ -1,9 +1,9 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * Last changed in libpng 1.2.23 - [November 6, 2007]
+ * Last changed in libpng 1.2.6 - August 15, 2004
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2007 Glenn Randers-Pehrson
+ * Copyright (c) 1998-2004 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
@@ -82,9 +82,8 @@ 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[PNG_tIME_STRING_LENGTH] = "no tIME chunk present in file";
+static char tIME_string[30] = "no tIME chunk present in file";
 #endif
 
 static int verbose = 0;
@@ -1003,13 +1002,11 @@ 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_memcpy instead of "=" because the string
+         /* we have to use png_strncpy instead of "=" because the string
             pointed to by png_convert_to_rfc1123() gets free'ed before
             we use it */
-         png_memcpy(tIME_string,
-                    png_convert_to_rfc1123(read_ptr, mod_time), 
-                    png_sizeof(tIME_string));
-         tIME_string[png_sizeof(tIME_string)-1] = '\0';
+         png_strncpy(tIME_string,png_convert_to_rfc1123(read_ptr,
+            mod_time),30);
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1146,13 +1143,11 @@ 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_memcpy instead of "=" because the string
+         /* we have to use png_strncpy instead of "=" because the string
             pointed to by png_convert_to_rfc1123() gets free'ed before
             we use it */
-         png_memcpy(tIME_string,
-                    png_convert_to_rfc1123(read_ptr, mod_time),
-                    png_sizeof(tIME_string));
-         tIME_string[png_sizeof(tIME_string)-1] = '\0';
+         png_strncpy(tIME_string,png_convert_to_rfc1123(read_ptr,
+            mod_time),30);
          tIME_chunk_present++;
 #endif /* PNG_TIME_RFC1123_SUPPORTED */
       }
@@ -1553,4 +1548,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_31 your_png_h_is_not_version_1_0_31;
+typedef version_1_2_20beta02 your_png_h_is_not_version_1_2_20beta02;

pngwrite.c

@@ -1,9 +1,9 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.25 [February 18, 2008]
+ * Last changed in libpng 1.2.15 January 5, 2007
  * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2008 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.)
  */
@@ -454,6 +454,14 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    if (png_ptr == NULL)
       return (NULL);
 
+#if !defined(PNG_1_0_X)
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+#ifdef PNG_MMX_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+#endif
+#endif /* PNG_1_0_X */
+
    /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
@@ -482,15 +490,12 @@ 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);
 
-   if(user_png_ver)
+   i=0;
+   do
    {
-     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(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)
    {
@@ -665,6 +670,14 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
    png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
 #endif
 
+#if !defined(PNG_1_0_X)
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+#ifdef PNG_MMX_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+#endif
+#endif /* PNG_1_0_X */
+
 #ifdef PNG_SETJMP_SUPPORTED
    /* restore jump buffer */
    png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof (jmp_buf));
@@ -1003,32 +1016,21 @@ 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)
    {
-      if (png_ptr != NULL)
-      {
-        png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
+      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;
-        }
-#endif
+      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,
@@ -1074,13 +1076,11 @@ 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

@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * Last changed in libpng 1.2.20 Septhember 3, 2007
+ * Last changed in libpng 1.2.19 August 20, 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)
@@ -494,7 +494,7 @@ 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_IHDR, buf, (png_size_t)13);
+   png_write_chunk(png_ptr, (png_bytep)png_IHDR, buf, (png_size_t)13);
 
    /* initialize zlib with PNG info */
    png_ptr->zstream.zalloc = png_zalloc;
@@ -650,7 +650,7 @@ 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_IDAT, data, length);
+   png_write_chunk(png_ptr, (png_bytep)png_IDAT, data, length);
    png_ptr->mode |= PNG_HAVE_IDAT;
 }
 
@@ -662,7 +662,7 @@ png_write_IEND(png_structp png_ptr)
    PNG_IEND;
 #endif
    png_debug(1, "in png_write_IEND\n");
-   png_write_chunk(png_ptr, png_IEND, png_bytep_NULL,
+   png_write_chunk(png_ptr, (png_bytep)png_IEND, png_bytep_NULL,
      (png_size_t)0);
    png_ptr->mode |= PNG_HAVE_IEND;
 }
@@ -683,7 +683,7 @@ 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_gAMA, buf, (png_size_t)4);
+   png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
 }
 #endif
 #ifdef PNG_FIXED_POINT_SUPPORTED
@@ -698,7 +698,7 @@ 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_gAMA, buf, (png_size_t)4);
+   png_write_chunk(png_ptr, (png_bytep)png_gAMA, buf, (png_size_t)4);
 }
 #endif
 #endif
@@ -718,7 +718,7 @@ 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_sRGB, buf, (png_size_t)1);
+   png_write_chunk(png_ptr, (png_bytep)png_sRGB, buf, (png_size_t)1);
 }
 #endif
 
@@ -931,7 +931,7 @@ png_write_sBIT(png_structp png_ptr, png_color_8p sbit, int color_type)
       buf[size++] = sbit->alpha;
    }
 
-   png_write_chunk(png_ptr, png_sBIT, buf, size);
+   png_write_chunk(png_ptr, (png_bytep)png_sBIT, buf, size);
 }
 #endif
 
@@ -995,7 +995,7 @@ 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_cHRM, buf, (png_size_t)32);
+   png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
 }
 #endif
 #ifdef PNG_FIXED_POINT_SUPPORTED
@@ -1047,7 +1047,7 @@ 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_cHRM, buf, (png_size_t)32);
+   png_write_chunk(png_ptr, (png_bytep)png_cHRM, buf, (png_size_t)32);
 }
 #endif
 #endif
@@ -1072,7 +1072,7 @@ 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_tRNS, trans, (png_size_t)num_trans);
+      png_write_chunk(png_ptr, (png_bytep)png_tRNS, trans, (png_size_t)num_trans);
    }
    else if (color_type == PNG_COLOR_TYPE_GRAY)
    {
@@ -1084,7 +1084,7 @@ 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_tRNS, buf, (png_size_t)2);
+      png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)2);
    }
    else if (color_type == PNG_COLOR_TYPE_RGB)
    {
@@ -1098,7 +1098,7 @@ 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_tRNS, buf, (png_size_t)6);
+      png_write_chunk(png_ptr, (png_bytep)png_tRNS, buf, (png_size_t)6);
    }
    else
    {
@@ -1131,7 +1131,7 @@ 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_bKGD, buf, (png_size_t)1);
+      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)1);
    }
    else if (color_type & PNG_COLOR_MASK_COLOR)
    {
@@ -1144,7 +1144,7 @@ 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_bKGD, buf, (png_size_t)6);
+      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)6);
    }
    else
    {
@@ -1155,7 +1155,7 @@ 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_bKGD, buf, (png_size_t)2);
+      png_write_chunk(png_ptr, (png_bytep)png_bKGD, buf, (png_size_t)2);
    }
 }
 #endif
@@ -1346,7 +1346,7 @@ 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_tEXt, (png_uint_32)key_len+text_len+1);
+   png_write_chunk_start(png_ptr, (png_bytep)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 +1404,7 @@ 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_zTXt, (png_uint_32)
+   png_write_chunk_start(png_ptr, (png_bytep)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 +1472,7 @@ 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_iTXt,
+   png_write_chunk_start(png_ptr, (png_bytep)png_iTXt,
           (png_uint_32)(
         5 /* comp byte, comp flag, terminators for key, lang and lang_key */
         + key_len
@@ -1726,7 +1726,6 @@ png_write_tIME(png_structp png_ptr, png_timep mod_time)
 void /* PRIVATE */
 png_write_start_row(png_structp png_ptr)
 {
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
 #ifdef PNG_USE_LOCAL_ARRAYS
    /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
@@ -1741,7 +1740,6 @@ png_write_start_row(png_structp png_ptr)
 
    /* offset to next interlace block in the y direction */
    int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
 #endif
 
    png_size_t buf_size;
@@ -1824,7 +1822,6 @@ png_write_start_row(png_structp png_ptr)
 void /* PRIVATE */
 png_write_finish_row(png_structp png_ptr)
 {
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
 #ifdef PNG_USE_LOCAL_ARRAYS
    /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
@@ -1839,7 +1836,6 @@ png_write_finish_row(png_structp png_ptr)
 
    /* offset to next interlace block in the y direction */
    int png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
 #endif
 
    int ret;
@@ -2114,9 +2110,7 @@ png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
 void /* PRIVATE */
 png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
 {
-   png_bytep best_row;
-#ifndef PNG_NO_WRITE_FILTER
-   png_bytep prev_row, row_buf;
+   png_bytep prev_row, best_row, row_buf;
    png_uint_32 mins, bpp;
    png_byte filter_to_do = png_ptr->do_filter;
    png_uint_32 row_bytes = row_info->rowbytes;
@@ -2129,10 +2123,8 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
    bpp = (row_info->pixel_depth + 7) >> 3;
 
    prev_row = png_ptr->prev_row;
-#endif
-   best_row = png_ptr->row_buf;
+   best_row = row_buf = png_ptr->row_buf;
 #ifndef PNG_NO_WRITE_FILTER
-   row_buf = best_row;
    mins = PNG_MAXSUM;
 
    /* The prediction method we use is to find which method provides the
@@ -2712,7 +2704,6 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
 
    png_write_filtered_row(png_ptr, best_row);
 
-#ifndef PNG_NO_WRITE_FILTER
 #if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
    /* Save the type of filter we picked this time for future calculations */
    if (png_ptr->num_prev_filters > 0)
@@ -2725,7 +2716,6 @@ png_write_find_filter(png_structp png_ptr, png_row_infop row_info)
       png_ptr->prev_filters[j] = best_row[0];
    }
 #endif
-#endif /* PNG_NO_WRITE_FILTER */
 }
 
 

projects/visualc6/README.txt

@@ -31,11 +31,11 @@ To use:
 
 This project builds the libpng binaries as follows:
 
-* Win32_DLL_Release\libpng10.dll      DLL build
-* Win32_DLL_Debug\libpng10d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng10.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng10d.dll   DLL build using ASM (debug version)
-* Win32_DLL_VB\libpng10vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng13.dll      DLL build
+* Win32_DLL_Debug\libpng13d.dll       DLL build (debug version)
+* Win32_DLL_ASM_Release\libpng13.dll  DLL build using ASM code
+* Win32_DLL_ASM_Debug\libpng13d.dll   DLL build using ASM (debug version)
+* Win32_DLL_VB\libpng13vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
 * Win32_LIB_ASM_Release\libpng.lib    static build using ASM code

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 "ZLIB_DLL" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -63,7 +63,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
 
@@ -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_DEBUG=1 /D "PNG_BUILD_DLL" /D "ZLIB_DLL" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
@@ -94,7 +94,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
 
@@ -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" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -125,7 +125,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
 
@@ -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" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "_DEBUG" /mktyplib203 /win32
@@ -156,7 +156,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"
 
@@ -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" /FD /c
 # SUBTRACT CPP /YX /Yc /Yu
 MTL=midl.exe
 # ADD BASE MTL /nologo /D "NDEBUG" /mktyplib203 /win32
@@ -187,10 +187,10 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng10vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng13vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_VB
-TargetName=libpng10vb
+TargetName=libpng13vb
 SOURCE="$(InputPath)"
 PostBuild_Cmds=echo    Deleting $(targetname) import library and export file (Not required for VB projects)	del $(outdir)\$(targetname).lib	del $(outdir)\$(targetname).exp
 # End Special Build Tool
@@ -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 "WIN32" /D "NDEBUG" /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_DEBUG=1 /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" /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" /FD /GZ /c
 # SUBTRACT CPP /YX /Yc /Yu
 RSC=rc.exe
 # ADD BASE RSC /l 0x409 /d "_DEBUG"
@@ -365,6 +365,41 @@ 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/visualc6/pngtest.dsp

@@ -58,7 +58,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_Release\libpng10.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_Release\libpng13.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Release\zlib1.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Release
 SOURCE="$(InputPath)"
@@ -90,7 +90,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_Debug\libpng10d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_Debug\libpng13d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_Debug
 SOURCE="$(InputPath)"
@@ -122,7 +122,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 Win32_DLL_ASM_Release\libpng10.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release\zlib1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 Win32_DLL_ASM_Release\libpng13.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release\zlib1.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_ASM_Release
 SOURCE="$(InputPath)"
@@ -154,7 +154,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 Win32_DLL_ASM_Debug\libpng10d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 Win32_DLL_ASM_Debug\libpng13d.lib ..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug\zlib1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_ASM_Debug
 SOURCE="$(InputPath)"

projects/visualc71/README.txt

@@ -32,11 +32,11 @@ To use:
 
 This project builds the libpng binaries as follows:
 
-* Win32_DLL_Release\libpng10.dll      DLL build
-* Win32_DLL_Debug\libpng10d.dll       DLL build (debug version)
-* Win32_DLL_ASM_Release\libpng10.dll  DLL build using ASM code
-* Win32_DLL_ASM_Debug\libpng10d.dll   DLL build using ASM (debug version)
-* Win32_DLL_VB\libpng10vb.dll         DLL build for Visual Basic, using stdcall
+* Win32_DLL_Release\libpng13.dll      DLL build
+* Win32_DLL_Debug\libpng13d.dll       DLL build (debug version)
+* Win32_DLL_ASM_Release\libpng13.dll  DLL build using ASM code
+* Win32_DLL_ASM_Debug\libpng13d.dll   DLL build using ASM (debug version)
+* Win32_DLL_VB\libpng13vb.dll         DLL build for Visual Basic, using stdcall
 * Win32_LIB_Release\libpng.lib        static build
 * Win32_LIB_Debug\libpngd.lib         static build (debug version)
 * Win32_LIB_ASM_Release\libpng.lib    static build using ASM code

projects/visualc71/libpng.vcproj

@@ -18,7 +18,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;PNG_NO_MMX_CODE;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -30,7 +30,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10.dll"
+				OutputFile="$(OutDir)/libpng13.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -43,7 +43,7 @@
 				Name="VCPreLinkEventTool"/>
 			<Tool
 				Name="VCResourceCompilerTool"
-				PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="NDEBUG"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -66,7 +66,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_NO_MMX_CODE;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_BUILD_DLL;ZLIB_DLL"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -78,7 +78,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10d.dll"
+				OutputFile="$(OutDir)/libpng13d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -91,7 +91,7 @@
 				Name="VCPreLinkEventTool"/>
 			<Tool
 				Name="VCResourceCompilerTool"
-				PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -114,7 +114,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -126,7 +126,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10.dll"
+				OutputFile="$(OutDir)/libpng13.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -140,7 +140,7 @@
 			<Tool
 				Name="VCResourceCompilerTool"
 				AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
-				PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="NDEBUG"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -163,7 +163,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_BUILD_DLL;ZLIB_DLL;PNG_LIBPNG_SPECIALBUILD"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -175,7 +175,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10d.dll"
+				OutputFile="$(OutDir)/libpng13d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -189,7 +189,7 @@
 			<Tool
 				Name="VCResourceCompilerTool"
 				AdditionalOptions="/d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;Use MMX instructions&quot;&quot;&quot;&quot;"
-				PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="_DEBUG,PNG_DEBUG=1"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -212,7 +212,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MMX_CODE;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_BUILD_DLL;ZLIB_DLL;PNGAPI=__stdcall;PNG_NO_MODULEDEF;PNG_LIBPNG_SPECIALBUILD"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -224,7 +224,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng10vb.dll"
+				OutputFile="$(OutDir)/libpng13vb.dll"
 				LinkIncremental="1"/>
 			<Tool
 				Name="VCMIDLTool"/>
@@ -237,7 +237,7 @@
 			<Tool
 				Name="VCResourceCompilerTool"
 				AdditionalOptions="/d PNG_LIBPNG_DLLFNAME_POSTFIX=&quot;&quot;&quot;&quot;VB&quot;&quot;&quot;&quot; /d PNG_LIBPNG_SPECIALBUILD=&quot;&quot;&quot;&quot;__stdcall calling convention used for exported functions&quot;&quot;&quot;&quot;"
-				PreprocessorDefinitions="NDEBUG;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="NDEBUG"
 				Culture="1033"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib;$(IntDir)"/>
 			<Tool
@@ -260,7 +260,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="PNG_NO_MMX_CODE;WIN32;NDEBUG;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;NDEBUG"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -301,7 +301,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..;..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_NO_MMX_CODE;PNG_DEBUG=1;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -342,7 +342,7 @@
 				Name="VCCLCompilerTool"
 				InlineFunctionExpansion="1"
 				AdditionalIncludeDirectories="..\..,..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;NDEBUG;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD"
 				StringPooling="TRUE"
 				RuntimeLibrary="2"
 				EnableFunctionLevelLinking="TRUE"
@@ -383,7 +383,7 @@
 				Name="VCCLCompilerTool"
 				Optimization="0"
 				AdditionalIncludeDirectories="..\..,..\..\..\zlib"
-				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD;_CRT_SECURE_NO_WARNINGS"
+				PreprocessorDefinitions="WIN32;_DEBUG;DEBUG;PNG_DEBUG=1;PNG_USE_PNGVCRD;PNG_LIBPNG_SPECIALBUILD"
 				BasicRuntimeChecks="3"
 				RuntimeLibrary="3"
 				UsePrecompiledHeader="3"
@@ -563,6 +563,39 @@
 			<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

projects/visualc71/pngtest.vcproj

@@ -226,7 +226,7 @@ $(TargetPath) ..\..\pngtest.png $(IntDir)\pngout.png"
 				Name="VCLinkerTool"
 				OutputFile="$(OutDir)/pngtest.exe"
 				LinkIncremental="1"
-				IgnoreDefaultLibraryNames="$(IntDir)\libpng10vb.lib"
+				IgnoreDefaultLibraryNames="$(IntDir)\libpng13vb.lib"
 				SubSystem="1"
 				TargetMachine="1"/>
 			<Tool

scripts/CMakeLists.txt

@@ -5,8 +5,8 @@ project(PNG)
 # For conditions of distribution and use, see copyright notice in png.h
 
 set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 0)
-set(PNGLIB_RELEASE 31)
+set(PNGLIB_MINOR 2)
+set(PNGLIB_RELEASE 20)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
@@ -30,11 +30,11 @@ endif(NOT WIN32)
 # COMMAND LINE OPTIONS
 option(PNG_SHARED "Build shared lib" YES)
 option(PNG_STATIC "Build static lib" YES)
-if(MINGW)
+if(MSVC)
   option(PNG_TESTS  "Build pngtest" NO)
-else(MINGW)
+else(MSVC)
   option(PNG_TESTS  "Build pngtest" YES)
-endif(MINGW)
+endif(MSVC)
 option(PNG_NO_CONSOLE_IO "FIXME" YES)
 option(PNG_NO_STDIO      "FIXME" YES)
 option(PNG_DEBUG         "Build with debug output" YES)
@@ -62,6 +62,8 @@ else(NOT WIN32)
  endif("$ENV{${TEXT}}" STREQUAL "")
 endif(NOT WIN32)
 
+option(PNG_MMX "Use MMX assembler code (x86 only)" ${png_asm_tmp})
+
 # SET LIBNAME
 # msvc does not append 'lib' - do it here to have consistent name
 if(MSVC)
@@ -97,14 +99,23 @@ 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)
-add_definitions(-DPNG_NO_MMX_CODE)
+if(PNG_MMX)
+ if(MSVC)
+  add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
+  set(libpng_sources ${libpng_sources}
+          pngvcrd.c
+  )
+ else(MSVC)
+  set(libpng_sources ${libpng_sources}
+          pnggccrd.c
+  )
+ endif(MSVC)
+else(PNG_MMX)
+  add_definitions(-DLIBPNG_NO_MMX)
+  add_definitions(-DPNG_NO_MMX_CODE)
+endif(PNG_MMX)
 
 if(PNG_CONSOLE_IO_SUPPORTED)
  add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
@@ -169,7 +180,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
 
 # SET UP LINKS
 set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.0.31
+#    VERSION 0.${PNGLIB_RELEASE}.1.2.20beta02
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)
@@ -180,11 +191,7 @@ if(NOT WIN32)
      CLEAN_DIRECT_OUTPUT 1)
 endif(NOT WIN32)
 # INSTALL
-install_targets(/lib ${PNG_LIB_NAME})
-if(PNG_STATIC)
-  install_targets(/lib ${PNG_LIB_NAME_STATIC})
-endif(PNG_STATIC)
-
+install_targets(/lib ${PNG_LIB_NAME} ${PNG_LIB_NAME_STATIC})
 install(FILES png.h pngconf.h         DESTINATION include)
 install(FILES png.h pngconf.h         DESTINATION include/${PNGLIB_NAME})
 install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)

scripts/libpng-config-head.in

@@ -8,7 +8,7 @@
 
 # Modeled after libxml-config.
 
-version=1.0.31
+version=1.2.20beta02
 prefix=""
 libdir=""
 libs=""

scripts/libpng.pc-configure.in

@@ -1,10 +1,10 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=@includedir@/libpng10
+includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.0.31
-Libs: -L${libdir} -lpng10
+Version: 1.2.20beta02
+Libs: -L${libdir} -lpng12
 Cflags: -I${includedir} @LIBPNG_NO_MMX@

scripts/libpng.pc.in

@@ -1,10 +1,10 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=@includedir@/libpng10
+includedir=@includedir@/libpng12
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.0.31
-Libs: -L${libdir} -lpng10
+Version: 1.2.20beta02
+Libs: -L${libdir} -lpng12
 Cflags: -I${includedir}

scripts/makefile.32sunu

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -30,7 +30,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra
 SUN_LD_FLAGS=-fast -xtarget=ultra
 
-# where make install puts libpng.a, libpng10.so and libpng10/png.h
+# where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -88,11 +88,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -103,7 +99,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra\"; \
 	echo ldopts=\"-xtarget=ultra\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.64sunu

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -30,7 +30,7 @@ RM_F=/bin/rm -f
 SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
 SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9
 
-# where make install puts libpng.a, libpng10.so and libpng10/png.h
+# where make install puts libpng.a, libpng12.so and libpng12/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -48,7 +48,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -88,11 +88,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -103,7 +99,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
 	echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.aix

@@ -18,9 +18,9 @@ RANLIB = ranlib
 RM_F = rm -f
 LN_SF = ln -f -s
 
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
@@ -46,7 +46,7 @@ CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-Wall
 CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng10 -lz -lm $(LDRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng12 -lz -lm $(LDRELEASE)
 
 # File extensions
 O=.o

scripts/makefile.beos

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -46,7 +46,7 @@ CFLAGS=-I$(ZLIBINC) -Wall -O1 -funroll-loops \
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
 LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
 
-# where make install puts libpng.a, libpng10.so*, and png.h
+# where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -84,17 +84,13 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng10 -lz \"; \
+	echo libs=\"-lpng12 -lz \"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -114,7 +110,7 @@ $(OLDSOVER): $(OBJSDLL)
 	$(OLDSOVER) $(OBJSDLL) $(LDFLAGS)
 
 pngtest: pngtest.o $(LIBSO)
-	$(CC) -L$(ZLIBLIB) -L. -lz -lpng10 -o pngtest pngtest.o
+	$(CC) -L$(ZLIBLIB) -L. -lz -lpng12 -o pngtest pngtest.o
 
 test: pngtest
 	./pngtest

scripts/makefile.cygwin

@@ -31,6 +31,9 @@ endif
 
 DESTDIR=
 
+# To disable assembler optimizations, add '-DPNG_NO_MMX_CODE' to
+# $CFLAGS.  To enable, add pnggccrd.o to the dependencies.
+
 CC=gcc
 ifdef MINGW
 MINGW_CCFLAGS=-mno-cygwin -I/usr/include/mingw
@@ -71,10 +74,10 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
         -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-CYGDLL = 10
-PNGMIN = 1.0.31
+CYGDLL = 12
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -109,7 +112,7 @@ DL =$(D)$(LIBPATH)
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
+	pngwtran.o pngmem.o pngerror.o pngpread.o # pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -134,11 +137,8 @@ buildsetup-tell:
 libpng.pc: scripts/libpng.pc.in
 	@echo -e Making pkg-config file for this libpng installation..'\n' \
            using PREFIX=\"$(prefix)\"'\n'
-	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
-	-e s!@exec_prefix@!$(exec_prefix)! \
-	-e s!@libdir@!$(LIBPATH)! \
-	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz! > libpng.pc
+	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
+	   sed -e s/-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 \
@@ -156,6 +156,20 @@ shared: all-shared
 all-static: $(STATLIB) pngtest-stat$(EXE)
 all-shared: $(SHAREDLIB) pngtest$(EXE)
 
+# pnggccrd.o: pnggccrd.c png.h pngconf.h
+#	@echo ""
+#	@echo '    You can ignore the "control reaches end of non-void function"'
+#	@echo '    warning and "<variable> defined but not used" warnings:'
+#	@echo ""
+#	$(CC) -c $(CFLAGS) -o $@ $<
+
+# pnggccrd.pic.o:	pnggccrd.c png.h pngconf.h
+#	@echo ""
+#	@echo '    You can ignore the "control reaches end of non-void function"'
+#	@echo '    warning and "<variable> defined but not used" warnings:'
+#	@echo ""
+#	$(CC) -c $(CFLAGS) -DPNG_BUILD_DLL -o $@ $<
+
 $(STATLIB): $(OBJS)
 	ar rc $@ $(OBJS)
 	$(RANLIB) $@
@@ -251,16 +265,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng12-config --ldflags`
 	./pngtesti$(EXE) pngtest.png
 
 clean:
@@ -291,6 +305,7 @@ pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngwrite.c
 pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngwtran.c
 pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngwutil.c
 pngpread.o pngpread.pic.o:	png.h pngconf.h pngpread.c
+# pnggccrd.o pnggccrd.pic.o:	png.h pngconf.h pnggccrd.c
 
 pngtest.o:			png.h pngconf.h pngtest.c
 pngtest-stat.o:			png.h pngconf.h pngtest.c

scripts/makefile.darwin

@@ -6,7 +6,7 @@
 #  Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
-# where "make install" puts libpng.a, libpng10.dylib, png.h and pngconf.h
+# where "make install" puts libpng.a, libpng12.dylib, png.h and pngconf.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -17,9 +17,9 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -27,8 +27,8 @@ LIBSO=$(LIBNAME).dylib
 LIBSOMAJ=$(LIBNAME).$(PNGMAJ).dylib
 LIBSOVER=$(LIBNAME).$(PNGVER).dylib
 OLDSO=libpng.dylib
-OLDSOMAJ=libpng.2.dylib
-OLDSOVER=libpng.2.$(PNGMIN).dylib
+OLDSOMAJ=libpng.3.dylib
+OLDSOVER=libpng.3.$(PNGMIN).dylib
 
 # Utilities:
 CC=cc
@@ -40,7 +40,7 @@ RM_F=/bin/rm -f
 
 # CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
 CFLAGS=-I$(ZLIBINC) -Wall -O -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -80,18 +80,15 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
+	   sed -e s/-lm// > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz\"; \
+	echo libs=\"-lpng12 -lz\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.dec

@@ -5,17 +5,17 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
-LIBNAME = libpng10
+LIBNAME = libpng12
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -68,11 +68,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -80,7 +76,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-std\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.elf

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006 Greg Roelofs and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
@@ -6,13 +6,13 @@
 # Modified for Debian by Junichi Uekawa and Josselin Mouette
 # Major modifications are:
 #    * link libpng explicitly with libz and libm
-#    * $(OLDSO).2 is a symlink rather than a different library
+#    * $(OLDSO).3 is a symlink rather than a different library
 #    * versioned symbols
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -20,8 +20,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -31,8 +31,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -56,7 +56,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-Wall -D_REENTRANT -O2 \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -lpng10
+LDFLAGS=-L. -lpng12
 LDFLAGS_A=libpng.a -lz -lm
 LIBADDFLAGS=-lz -lm
 
@@ -99,15 +99,11 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng.syms: png.h pngconf.h
 	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
-	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG10_%s {global:\n",PNGMAJ)}\
+	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG12_%s {global:\n",PNGMAJ)}\
 	{ for (i=1;i+2<=NF;++i)\
 		if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
 			print $$(i+1) ";";\
@@ -124,8 +120,8 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"\"; \
 	echo R_opts=\"\"; \
-	echo libs=\"-lpng10\"; \
-	echo all_libs=\"-lpng10 $(LIBADDFLAGS)\"; \
+	echo libs=\"-lpng12\"; \
+	echo all_libs=\"-lpng12 $(LIBADDFLAGS)\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.gcmmx

@@ -1,4 +1,4 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc using MMX
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc using MMX
 # assembler code
 # Copyright 2002, 2006 Greg Roelofs and Glenn Randers-Pehrson
 # Copyright 1998-2001 Greg Roelofs
@@ -7,14 +7,16 @@
 
 # CAUTION: Do not use this makefile with gcc versions 2.7.2.2 and earlier.
 
+# WARNING: The assembler code in pnggccrd.c may not be thread safe.
+
 # NOTE:  When testing MMX performance on a multitasking system, make sure
 #        there are no floating-point programs (e.g., SETI@Home) running in
 #        the background!  Context switches between MMX and FPU are expensive.
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -22,8 +24,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC = gcc
@@ -34,8 +36,8 @@ MKDIR_P = mkdir -p
 RANLIB = ranlib
 RM_F = /bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -70,7 +72,7 @@ CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -Wall -O \
 #	-m486 -malign-double -ffast-math \
 #	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer 
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 
@@ -96,7 +98,7 @@ DM=$(DESTDIR)$(MANPATH)
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -112,11 +114,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -125,10 +123,16 @@ libpng-config:
 	echo cppflags=\"-DPNG_THREAD_UNSAFE_OK \"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
+pnggccrd.o:	pnggccrd.c png.h pngconf.h
+	$(CC) -c $(CFLAGS) -o $@ $*.c
+
+pnggccrd.pic.o:	pnggccrd.c png.h pngconf.h
+	$(CC) -c $(CFLAGS) -fPIC -o $@ pnggccrd.c
+
 $(LIBSO): $(LIBSOMAJ)
 	$(LN_SF) $(LIBSOMAJ) $(LIBSO)
 

scripts/makefile.hp64

@@ -16,9 +16,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -26,8 +26,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -45,7 +45,7 @@ CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
 
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 
-# where make install puts libpng.a, libpng10.sl, and png.h
+# where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -86,11 +86,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +94,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hpgcc

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -55,8 +55,8 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 
 CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -96,17 +96,13 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hpux

@@ -16,9 +16,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -26,8 +26,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.2
-OLDSOVER=libpng.sl.2.$(PNGMIN)
+OLDSOMAJ=libpng.sl.3
+OLDSOVER=libpng.sl.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -37,7 +37,7 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where make install puts libpng.a, libpng10.sl, and png.h
+# where make install puts libpng.a, libpng12.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -83,11 +83,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -95,7 +91,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.intel

@@ -36,7 +36,7 @@ O=.obj
 
 OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O) \
 pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O) \
-pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
+pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O) pngvcrd$(O) pnggccrd$(O)
 
 all: test
 
@@ -61,6 +61,12 @@ pngrtran$(O): png.h pngconf.h
 pngrutil$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 
+pnggccrd$(O): png.h pngconf.h
+	$(CC) $(CFLAGS) $*.c $(ERRFILE)
+
+pngvcrd$(O): png.h pngconf.h
+	$(CC) $(CFLAGS) $*.c $(ERRFILE)
+
 pngerror$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 

scripts/makefile.linux

@@ -1,12 +1,12 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006 Greg Roelofs and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -14,8 +14,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -25,8 +25,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -50,7 +50,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 INCPATH=$(prefix)/include
@@ -91,11 +91,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -103,7 +99,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.mingw

@@ -39,6 +39,10 @@ RANLIB=ranlib
 
 MKDIR_P=/bin/mkdir -pv
 
+
+# To disable assembler optimizations, add '-DPNG_NO_MMX_CODE' to
+# $CFLAGS.  To enable them, add pnggccrd.o to the dependencies.
+
 # Where "make install" puts libpng*.a, *png*.dll, png.h, and pngconf.h
 ifndef prefix
 prefix=/usr
@@ -71,10 +75,10 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
         -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-MINGDLL = 10
-PNGMIN = 1.0.31
+MINGDLL = 12
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=libpng$(MINGDLL).dll
@@ -105,7 +109,7 @@ DL =$(D)$(LIBPATH)
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
+	pngwtran.o pngmem.o pngerror.o pngpread.o # pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -130,12 +134,8 @@ buildsetup-tell:
 libpng.pc: scripts/libpng.pc.in
 	@echo -e Making pkg-config file for this libpng installation..'\n' \
            using PREFIX=\"$(prefix)\"'\n'
-	cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
-	-e s!@exec_prefix@!$(exec_prefix)! \
-	-e s!@libdir@!$(LIBPATH)! \
-	-e s!@includedir@!$(INCPATH)! \
-	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat $(S)/scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! | \
+	   sed -e s/-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 \
@@ -242,16 +242,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng10-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng12-config --ldflags`
 	./pngtesti$(EXE) pngtest.png
 
 clean:
@@ -282,6 +282,7 @@ pngwrite.o pngwrite.pic.o:	png.h pngconf.h pngwrite.c
 pngwtran.o pngwtran.pic.o:	png.h pngconf.h pngwtran.c
 pngwutil.o pngwutil.pic.o:	png.h pngconf.h pngwutil.c
 pngpread.o pngpread.pic.o:	png.h pngconf.h pngpread.c
+# pnggccrd.o pnggccrd.pic.o:	png.h pngconf.h pnggccrd.c
 
 pngtest.o pngtest.pic.o:	png.h pngconf.h pngtest.c
 

scripts/makefile.ne12bsd

@@ -10,14 +10,14 @@
 LOCALBASE?=/usr/local
 LIBDIR=	${LOCALBASE}/lib
 MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng10
+INCSDIR=${LOCALBASE}/include/libpng12
 
 LIB=	png12
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.31
-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
+SHLIB_MINOR=	1.2.20beta02
+SRCS=	pnggccrd.c 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
 INCS=	png.h pngconf.h
 MAN=	libpng.3 libpngpf.3 png.5
 

scripts/makefile.netbsd

@@ -14,10 +14,10 @@ INCSDIR=${LOCALBASE}/include/libpng
 
 LIB=	png
 SHLIB_MAJOR=	3
-SHLIB_MINOR=	1.0.31
-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
+SHLIB_MINOR=	1.2.20beta02
+SRCS=	pnggccrd.c 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
 INCS=	png.h pngconf.h
 MAN=	libpng.3 libpngpf.3 png.5
 

scripts/makefile.nommx

@@ -1,13 +1,13 @@
-# makefile for libpng.a and libpng10.so on Linux ELF with gcc
+# makefile for libpng.a and libpng12.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2007 Greg Roelofs and
 # Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -15,8 +15,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -26,8 +26,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng10.a, libpng10.so*,
-# libpng10/png.h and libpng10/pngconf.h
+# where "make install" puts libpng12.a, libpng12.so*,
+# libpng12/png.h and libpng12/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -51,7 +51,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 INCPATH=$(prefix)/include
@@ -92,13 +92,8 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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@!$(INCPATH)! \
-	-e s!-lpng10!-lpng10\ -lz\ -lm! \
-	-e s!Cflags: !Cflags:\ -DPNG_NO_MMX_CODE!> libpng.pc
+	cat scripts/libpng.pc.in | sed -e s!@PREFIX@!$(prefix)! \
+	| sed -e "s!Cflags: !Cflags: -DPNG_NO_MMX_CODE !"> libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -106,7 +101,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME) -DPNG_NO_MMX_CODE\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.openbsd

@@ -8,10 +8,10 @@ LIBDIR=	${PREFIX}/lib
 MANDIR= ${PREFIX}/man/cat
 
 SHLIB_MAJOR=	0
-SHLIB_MINOR=	1.0.31
+SHLIB_MINOR=	1.2.20beta02
 
 LIB=	png
-SRCS=	png.c pngerror.c pngget.c pngmem.c pngpread.c \
+SRCS=	png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \
 	pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
 	pngwio.c pngwrite.c pngwtran.c pngwutil.c
 

scripts/makefile.sco

@@ -7,9 +7,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -17,8 +17,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -39,7 +39,7 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 CFLAGS= -dy -belf -I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include/libpng
 LIBPATH=$(exec_prefix)/lib
@@ -79,11 +79,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -91,7 +87,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-belf\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.sggcc

@@ -1,12 +1,12 @@
-# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng12.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -14,8 +14,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -25,7 +25,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so, and libpng10/png.h
+# Where make install puts libpng.a, libpng12.so, and libpng12/png.h
 # Prefix must be a full pathname.
 
 prefix=/usr/local
@@ -86,11 +86,7 @@ libpng.a: $(OBJS)
 shared: $(LIBSOVER)
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +97,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.sgi

@@ -1,12 +1,12 @@
-# makefile for libpng.a and libpng10.so, SGI IRIX with 'cc'
+# makefile for libpng.a and libpng12.so, SGI IRIX with 'cc'
 # Copyright (C) 2001-2002, 2006, 2007 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng10
+LIBNAME=libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -14,8 +14,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -25,7 +25,7 @@ LN_SF=ln -sf
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so, and libpng10/png.h
+# Where make install puts libpng.a, libpng12.so, and libpng12/png.h
 # Prefix must be a full pathname.
 
 prefix=/usr/local
@@ -47,7 +47,7 @@ WARNMORE=-fullwarn
 # Note: -KPIC is the default anyhow
 #CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC -DPNG_NO_MMX_CODE # -g -DPNG_DEBUG=5
 CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_NO_MMX_CODE
-LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng12 -lz -lm
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
   -set_version sgi$(PNGMAJ).0
@@ -89,11 +89,7 @@ libpng.a: $(OBJS)
 shared: $(LIBSOVER)
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -104,7 +100,7 @@ libpng-config:
 	echo ldopts=\"$(ABI)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo libdir=\"$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.so9

@@ -8,17 +8,17 @@
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
-LIBNAME = libpng10
+LIBNAME = libpng12
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 # gcc 2.95 doesn't work.
@@ -49,7 +49,7 @@ ZLIBINC=/usr/include
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 #CFLAGS=-I$(ZLIBINC) -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
 CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -89,11 +89,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +97,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.solaris

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -27,7 +27,7 @@ LN_SF=ln -f -s
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so*, and png.h
+# Where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -46,7 +46,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-I$(ZLIBINC) -Wall -O \
 	-DPNG_NO_MMX_CODE; \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -86,11 +86,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -99,7 +95,7 @@ libpng-config:
 	echo cppflags=\"-DPNG_NO_MMX_CODE\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.solaris-x86

@@ -6,9 +6,9 @@
 # For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng10
+LIBNAME = libpng12
 PNGMAJ = 0
-PNGMIN = 1.0.31
+PNGMIN = 1.2.20beta02
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -16,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.2
-OLDSOVER=libpng.so.2.$(PNGMIN)
+OLDSOMAJ=libpng.so.3
+OLDSOVER=libpng.so.3.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -27,7 +27,7 @@ LN_SF=ln -f -s
 RANLIB=echo
 RM_F=/bin/rm -f
 
-# Where make install puts libpng.a, libpng10.so*, and png.h
+# Where make install puts libpng.a, libpng12.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -45,7 +45,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 	-Wstrict-prototypes -Wmissing-prototypes #-Wconversion
 CFLAGS=-I$(ZLIBINC) -Wall -O \
 	# $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng12 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -69,7 +69,7 @@ DM=$(DESTDIR)$(MANPATH)
 
 OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
-	pngwtran.o pngmem.o pngerror.o pngpread.o
+	pngwtran.o pngmem.o pngerror.o pngpread.o pnggccrd.o
 
 OBJSDLL = $(OBJS:.o=.pic.o)
 
@@ -85,11 +85,7 @@ libpng.a: $(OBJS)
 	$(RANLIB) $@
 
 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!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
+	cat scripts/libpng.pc.in | sed -e s\!@PREFIX@!$(prefix)! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +94,7 @@ libpng-config:
 	echo cppflags=\""; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-R$(LIBPATH)\"; \
-	echo libs=\"-lpng10 -lz -lm\"; \
+	echo libs=\"-lpng12 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -236,6 +232,7 @@ pngwio.o pngwio.pic.o: png.h pngconf.h
 pngmem.o pngmem.pic.o: png.h pngconf.h
 pngset.o pngset.pic.o: png.h pngconf.h
 pngget.o pngget.pic.o: png.h pngconf.h
+pnggccrd.o pnggccrd.pic.o: png.h pngconf.h
 pngread.o pngread.pic.o: png.h pngconf.h
 pngrtran.o pngrtran.pic.o: png.h pngconf.h
 pngrutil.o pngrutil.pic.o: png.h pngconf.h

scripts/makefile.vcawin32

@@ -26,7 +26,8 @@ O=.obj
 OBJS1 = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O)
 OBJS2 = pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O)
 OBJS3 = pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-OBJS  = $(OBJS1) $(OBJS2) $(OBJS3)
+OBJS4 = pngvcrd$(O)
+OBJS  = $(OBJS1) $(OBJS2) $(OBJS3) $(OBJS4)
 
 # Targets
 all: libpng.lib
@@ -79,6 +80,9 @@ pngwtran$(O): png.h pngconf.h
 pngwutil$(O): png.h pngconf.h
 	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
 
+pngvcrd$(O): png.h pngconf.h
+	$(CC) -c $(CFLAGS) $*.c $(ERRFILE)
+
 libpng.lib: $(OBJS)
 	-$(RM) $@
 	$(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)

scripts/pngos2.def

@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.0.31
+; Version 1.2.20beta02
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -184,8 +184,47 @@ EXPORTS
   png_convert_to_rfc1123
   png_set_invalid
 
+; Added at version 1.2.0:
+  png_mmx_support
+  png_permit_empty_plte
+  png_permit_mng_features
+  png_get_mmx_flagmask
+  png_get_asm_flagmask
+  png_get_asm_flags
+  png_get_mmx_bitdepth_threshold
+  png_get_mmx_rowbytes_threshold
+  png_set_asm_flags
+  png_init_mmx_flags
+
+; Added at version 1.2.2:
+  png_handle_as_unknown
+
+; Added at version 1.2.2 and deleted from 1.2.3:
+; png_zalloc
+; png_zfree
+
+; Added at version 1.2.4
+  png_malloc_warn
+
+; Added at version 1.2.6
+  png_set_user_limits
+  png_get_user_height_max
+  png_get_user_width_max
+; Added at version 1.2.7
+  png_set_add_alpha
+
+; Added at version 1.2.9
+  png_get_uint_32
+  png_save_uint_32
+  png_get_uint_16
+  png_save_uint_16
+  png_get_int_32
+  png_save_int_32
+  png_get_uint_31
+  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 1.0.31
+;Version 1.2.20beta02
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
@@ -45,7 +45,7 @@ EXPORTS
   png_get_image_width  @37
   png_get_interlace_type  @38
   png_get_io_ptr    @39
-  ; png_get_libpng_ver  @40
+  png_get_libpng_ver  @40
   png_get_oFFs    @41
   png_get_pCAL    @42
   png_get_pHYs    @43
@@ -180,9 +180,7 @@ EXPORTS
   png_write_init_2    @167
   png_access_version_number  @168
 ; png_sig_bytes    @169
-; Removed from version 1.2.20
-; png_libpng_ver    @170
-;
+  png_libpng_ver    @170
   png_init_io    @171
   png_convert_to_rfc1123     @172
   png_set_invalid  @173
@@ -193,3 +191,46 @@ EXPORTS
   png_write_init_3    @176
   png_info_init_3 @177
   png_destroy_struct  @178
+; Added at version 1.2.0
+; For use with PNG_USER_MEM_SUPPORTED
+  png_destroy_struct_2  @179
+  png_create_read_struct_2 @180
+  png_create_write_struct_2 @181
+  png_malloc_default @182
+  png_free_default @183
+; MNG features
+  png_permit_mng_features  @184
+; MMX support
+  png_mmx_support  @185
+; png_get_mmx_flagmask  @186
+  png_get_asm_flagmask  @187
+  png_get_asm_flags  @188
+; png_get_mmx_bitdepth_threshold  @189
+; png_get_mmx_rowbytes_threshold  @190
+  png_set_asm_flags  @191
+; png_init_mmx_flags  @192
+; Strip error numbers
+  png_set_strip_error_numbers @193
+; Added at version 1.2.2
+  png_handle_as_unknown @194
+; Added at version 1.2.2 and deleted from 1.2.3
+; png_zalloc @195
+; png_zfree @196
+; Added at version 1.2.4
+  png_malloc_warn @195
+; Added at version 1.2.6
+  png_malloc_warn @195
+  png_get_user_height_max @196
+  png_get_user_width_max @197
+  png_set_user_limits @198
+; Added at version 1.2.7
+  png_set_add_alpha @199
+; Added at version 1.2.9
+  png_get_uint_32 @200
+  png_save_uint_32 @201
+  png_get_uint_16 @202
+  png_save_uint_16 @203
+  png_get_int_32 @204
+  png_save_int_32 @205
+  png_get_uint_31 @206
+  png_set_expand_gray_1_2_4_to_8  @207