[libpng10] Imported from libpng-1.0.41.tar

ANNOUNCE

@@ -1,74 +1,56 @@
 
-Libpng 1.2.41beta05 - October 11, 2009
+Libpng 1.0.41 - October 31, 2008
 
-This is not intended to be a public release.  It will be replaced
-within a few weeks by a public version or by another test version.
+This is a public release of libpng, intended for use in production codes.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.2.41beta05.tar.xz (LZMA-compressed, recommended)
-   libpng-1.2.41beta05.tar.gz
-   libpng-1.2.41beta05.tar.bz2
+   libpng-1.0.41.tar.gz
+   libpng-1.0.41.tar.lzma
+     (Get the lzma codec from <http://tukaani.org/lzma>).
+   libpng-1.0.41.tar.bz2
 
 Source files with LF line endings (for Unix/Linux) without the
 "configure" script
 
-   libpng-1.2.41beta05-no-config.tar.xz (LZMA-compressed, recommended)
-   libpng-1.2.41beta05-no-config.tar.gz
-   libpng-1.2.41beta05-no-config.tar.bz2
+   libpng-1.0.41-no-config.tar.gz
+   libpng-1.0.41-no-config.tar.lzma
+   libpng-1.0.41-no-config.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1241b05.zip
-   lp1241b05.7z
-   lp1241b05.tar.bz2
+   lpng1041.zip
+   lpng1041.7z
+   lpng1041.tar.bz2
 
 Project files
 
-   libpng-1.2.41beta05-project-netware.zip
-   libpng-1.2.41beta05-project-wince.zip
+   libpng-1.0.41-project-netware.zip
+   libpng-1.0.41-project-wince.zip
 
 Other information:
 
-   libpng-1.2.41beta05-README.txt
-   libpng-1.2.41beta05-KNOWNBUGS.txt
-   libpng-1.2.41beta05-LICENSE.txt
-   libpng-1.2.41beta05-Y2K-compliance.txt
-   libpng-1.2.41beta05-[previous version]-diff.txt
+   libpng-1.0.41-README.txt
+   libpng-1.0.41-KNOWNBUGS.txt
+   libpng-1.0.41-LICENSE.txt
+   libpng-1.0.41-Y2K-compliance.txt
 
-Changes since the last public release (1.2.40):
+Changes since the last public release (1.0.40):
 
-version 1.2.41beta01 [September 25, 2009]
-  Moved redundant IHDR checking into new png_check_IHDR() in png.c
-    and report all errors found in the IHDR data.
-  Eliminated useless call to png_check_cHRM() from pngset.c
-  Expanded TAB characters in pngrtran.c
+version 1.0.41 [October 31, 2008]
 
-version 1.2.41beta02 [September 30, 2009]
-  Revised png_check_IHDR().
-
-version 1.2.41beta03 [October 1, 2009]
-  Revised png_check_IHDR() again, to check info_ptr members instead of
-    the contents of the returned parameters.
-
-version 1.2.41beta04 [October 7, 2009]
-  Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
-  Ported some cosmetic changes from libpng-1.4.0beta86.
-  Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
-
-version 1.2.41beta05 [October 11, 2009]
-  Revised pngconf.h to make it easier to enable iTXt support.  Previously
-    defining PNG_iTXt_SUPPORTED would not work as expected.
-  Ported some cosmetic changes from libpng-1.4.0beta87, changing
-    many "#if defined(x)" to "#ifdef x".
+  Revised makefile.darwin to fix shared library numbering.
+  Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
+    in example.c (debian bug report)
+  Changed remaining "key" to "png_ptr->chunkdata" in png_handle_tEXt()
+    to avoid memory leak after memory failure while reading tEXt chunk.`
 
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-
-(subscription required; visit
+(subscription required; visit 
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
 to subscribe) or to glennrp at users.sourceforge.net
 

CHANGES

@@ -1,4 +1,4 @@
-/*
+
 CHANGES - changes for libpng
 
 version 0.2
@@ -539,8 +539,7 @@ version 1.0.5d [November 29, 1999]
   Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
   Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
     to applications a macro "PNG_USE_LOCAL_ARRAYS".
-  Remove all the new declarations with #ifdef/#endif when
-    PNG_USE_GLOBAL_ARRAYS is defined.
+  #ifdef out all the new declarations when PNG_USE_GLOBAL_ARRAYS is defined.
   Added PNG_EXPORT_VAR macro to accommodate making DLL's.
 version 1.0.5e [November 30, 1999]
   Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
@@ -978,21 +977,15 @@ 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
@@ -1071,7 +1064,6 @@ 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.
@@ -1180,7 +1172,7 @@ version 1.2.4beta3 [June 28, 2002]
   Plugged memory leak of row_buf in pngtest.c when there is a png_error().
   Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
   Added "test-installed" target to makefile.32sunu, makefile.64sunu,
-    makefile.beos, makefile.darwin, makefile.dec, makefile.macosx,
+    makefile.beos, makefile.darwin, makefile.dec, makefile.macosx, 
     makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
 version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
   Added "test-installed" target to makefile.cygwin and makefile.sco.
@@ -1266,8 +1258,6 @@ 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).
@@ -1301,7 +1291,7 @@ version 1.2.6beta4 [July 28, 2004]
   Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
     sequential read support.
   Added some "#if PNG_WRITE_SUPPORTED" blocks.
-  Removed some redundancy with #ifdef/#endif in png_malloc_default().
+  #ifdef'ed out some redundancy in png_malloc_default().
   Use png_malloc instead of png_zalloc to allocate the pallete.
 version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
   Fixed buffer overflow vulnerability in png_handle_tRNS()
@@ -1359,7 +1349,6 @@ 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.
 
@@ -1370,9 +1359,7 @@ 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
-  Comment out with #ifdef/#endif png_info_init in png.c and png_read_init
-    in pngread.c (as of 1.3.0)
+  #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
     png_do_strip_filler().
@@ -1389,7 +1376,7 @@ version 1.2.8beta5 [November 20, 2004]
   Use png_ptr->flags instead of png_ptr->transformations to pass
     PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI
     compatibility.
-  Revised handling of SPECIALBUILD, PRIVATEBUILD,
+  Revised handling of SPECIALBUILD, PRIVATEBUILD, 
     PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
 version 1.2.8rc1 [November 24, 2004]
   Moved handling of BUILD macros from pngconf.h to png.h
@@ -1687,14 +1674,14 @@ 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]
   No changes.
-
+ 
 version 1.2.17beta1 [March 6, 2007]
   Revised scripts/CMakeLists.txt to install both shared and static libraries.
   Deleted a redundant line from pngset.c.
-
+ 
 version 1.2.17beta2 [April 26, 2007]
   Relocated misplaced test for png_ptr == NULL in pngpread.c
   Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN
@@ -1715,7 +1702,7 @@ version 1.2.17rc2 [May 8, 2007]
   Added png_ptr->unknown_chunk to hold working unknown chunk data, so it
     can be free'ed in case of error.  Revised unknown chunk handling in
     pngrutil.c and pngpread.c to use this structure.
-
+ 
 version 1.2.17rc3 [May 8, 2007]
   Revised symbol-handling in configure script.
 
@@ -1758,9 +1745,9 @@ version 1.2.19beta6 [May 22, 2007]
   Added a special "_MSC_VER" case that defines png_snprintf to _snprintf
 
 version 1.2.19beta7 [May 22, 2007]
-  Squelched png_squelch_warnings() in pnggccrd.c and added
-    an #ifdef PNG_MMX_CODE_SUPPORTED/#endif block around the declarations
-    that caused the warnings that png_squelch_warnings was squelching.
+  Squelched png_squelch_warnings() in pnggccrd.c and added an
+    #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
+    the warnings that png_squelch_warnings was squelching.
 
 version 1.2.19beta8 [May 22, 2007]
   Removed __MMX__ from test in pngconf.h.
@@ -2158,7 +2145,7 @@ version 1.2.29beta03 [May 2, 2008]
     automake options.
   Changed $(ECHO) to echo in Makefile.am and Makefile.in
   Updated all configure files to autoconf-2.62
-  Comment out pnggcrd.c code with #ifdef/#endif if using MSC_VER
+  #ifdef out pnggcrd.c code if using MSC_VER
 
 version 1.2.29rc01 [May 4, 2008]
   No changes.
@@ -2188,7 +2175,7 @@ version 1.2.30beta03 [July 6, 2008]
 version 1.2.30beta04 [July 10, 2008]
   Merged more cosmetic whitespace changes from libpng-1.4.0beta19.
 
-version 1.0.38rc01, 1.2.30rc01 [July 18, 2008]
+version 1.0.38rc01, 1.2.30rc01 [October 31, 2008]
   No changes.
 
 version 1.0.38rc02, 1.2.30rc02 [July 21, 2008]
@@ -2259,243 +2246,10 @@ version 1.2.33beta01 [October 6, 2008]
 version 1.2.33rc01 [October 15, 2008]
   No changes.
 
-version 1.0.41rc01, version 1.2.33rc02 [October 23, 2008]
+version 1.0.41rc01, version 1.2.33rc02 [October 31, 2008]
   Changed remaining "key" to "png_ptr->chunkdata" in png_handle_tEXt()
     to avoid memory leak after memory failure while reading tEXt chunk.`
 
-version 1.2.33 [October 31, 2008]
-  No changes.
-
-version 1.2.34beta01 [November 27, 2008]
-  Revised png_warning() to write its message on standard output by default
-    when warning_fn is NULL. This was the behavior prior to libpng-1.2.9beta9.
-  Fixed string vs pointer-to-string error in png_check_keyword().
-  Added png_check_cHRM_fixed() in png.c and moved checking from pngget.c,
-    pngrutil.c, and pngwrite.c, and eliminated floating point cHRM checking.
-  Added check for zero-area RGB cHRM triangle in png_check_cHRM_fixed().
-  In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
-    check for all-zero coordinates that is detected by the triangle check.
-  Revised png_warning() to write its message on standard output by default
-    when warning_fn is NULL.
-
-version 1.2.34beta02 [November 28, 2008]
-  Corrected off-by-one error in bKGD validity check in png_write_bKGD()
-    and in png_handle_bKGD().
-
-version 1.2.34beta03 [December 1, 2008]
-  Revised bKGD validity check to use >= x instead of > x + 1
-  Merged with png_debug from libpng-1.4.0 to remove newlines.
-
-version 1.2.34beta04 [December 2, 2008]
-  More merging with png_debug from libpng-1.4.0 to remove newlines.
-
-version 1.2.34beta05 [December 5, 2008]
-  Removed redundant check for key==NULL before calling png_check_keyword()
-    to ensure that new_key gets initialized and removed extra warning
-    (Arvan Pritchard).
-
-version 1.2.34beta06 [December 9, 2008]
-  In png_write_png(), respect the placement of the filler bytes in an earlier
-    call to png_set_filler() (Jim Barry).
-
-version 1.2.34beta07 [December 9, 2008]
-  Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
-    PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
-    PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
-
-version 1.0.42rc01, 1.2.34rc01 [December 11, 2008]
-  No changes.
-
-version 1.0.42, 1.2.34 [December 18, 2008]
-  No changes.
-
-version 1.2.35beta01 [February 4, 2009]
-  Zero out some arrays of pointers after png_malloc(). (Tavis Ormandy)
-
-version 1.2.35beta02 [February 4, 2009]
-  Zero out more arrays of pointers after png_malloc().
-
-version 1.2.35beta03 [February 5, 2009]
-  Use png_memset() instead of a loop to intialize pointers.  We realize
-    this will not work on platforms where the NULL pointer is not all zeroes.
-
-version 1.2.35rc01 [February 11, 2009]
-  No changes.
-
-version 1.2.35rc02 [February 12, 2009]
-  Fix typo in new png_memset call in pngset.c (png_color should be png_charp)
-
-version 1.0.43 and 1.2.35 [February 14, 2009]
-  No changes.
-
-version 1.2.36beta01 [February 28, 2009]
-  Revised comments in png_set_read_fn() and png_set_write_fn().
-  Revised order of #ifdef's and indentation in png_debug definitions of png.h
-    bug introduced in libpng-1.2.34.
-
-version 1.2.36beta02 [March 21, 2009]
-  Use png_memset() after png_malloc() of big_row_buf when reading an
-    interlaced file, to avoid a possible UMR.
-  Undid recent revision of PNG_NO_STDIO version of png_write_flush().  Users
-    having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined.
-  Revised libpng*.txt documentation about use of png_write_flush().
-  Removed fflush() from pngtest.c.
-  Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
-
-version 1.2.36beta03 [March 27, 2009]
-  Relocated misplaced PNG_1_0_X define in png.h that caused the prototype
-    for png_set_strip_error_numbers() to be omitted from PNG_NO_ASSEMBLER_CODE
-    builds.  This bug was introduced in libpng-1.2.15beta4.
-  Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
-
-version 1.2.36beta04 [April 5, 2009]
-  Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
-
-version 1.2.36beta05 [April 24, 2009]
-  Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
-    application code writers to bypass the check for multiple inclusion
-    of setjmp.h when they know that it is safe to ignore the situation.
-  Made some cosmetic changes to whitespace in pngtest output.
-  Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
-    "shadowed declaration" warning from gcc-4.3.3.
-  Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
-    warning about a global "gamma" variable in math.h on some platforms.
-
-version 1.2.36rc01 [April 30, 2009]
-  No changes.
-
-version 1.0.44 and 1.2.36 [May 7, 2009]
-  No changes.
-
-version 1.2.37beta01 [May 14, 2009]
-  Fixed inconsistency in pngrutil.c, introduced in libpng-1.2.36.  The
-    memset() was using "png_ptr->rowbytes" instead of "row_bytes", which
-    the corresponding png_malloc() uses (Joe Drew).
-  Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
-  Updated some of the makefiles in the scripts directory (merged with
-    those in libpng-1.4.0beta57).
-
-version 1.2.37beta02 [May 19, 2009]
-  Fixed typo in libpng documentation (FILTER_AVE should be FILTER_AVG)
-  Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
-  Conditionally compile png_read_finish_row() which is not used by
-    progressive readers.
-  Added contrib/pngminim/preader to demonstrate building minimal progressive
-    decoder, based on contrib/gregbook with embedded libpng and zlib.
-
-version 1.2.37beta03 [May 20, 2009]
-  In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
-    is only one makefile in those directories, and revised the README files
-    accordingly.
-  Reformated sources in libpng style (3-space indentation, comment format)
-
-version 1.2.37rc01 [May 27, 2009]
-  No changes.
-
-versions 1.2.37 and 1.0.45 [June 4, 2009]
-  Reformatted several remaining "else statement;" and "if () statement;" into
-    two lines.
-  Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
-    and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
-  Added sections about the git repository and our coding style to the
-    documentation (merged from libpng-1.4.0beta62)
-  Added a section to the libpng documentation about using png_get_io_ptr()
-    in configure scripts to detect the presence of libpng.
-
-version 1.2.38beta01 [June 17, 2009]
-  Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
-    multiple times and to specify the sample order in the tRNS chunk,
-    because the ISO PNG specification has a typo in the tRNS table.
-  Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
-    PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
-    available for ignoring known chunks even when not saving unknown chunks.
-  Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
-    "#if defined()" and "if !defined()" where possible.
-  Added PNG_NO_HANDLE_AS_UNKNOWN in the PNG_LEGACY_SUPPORTED block of
-    pngconf.h, and moved the various unknown chunk macro definitions
-    outside of the PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
-
-version 1.0.46 [June 18, 2009]
-  Removed some editing cruft from scripts/libpng.pc.in and some makefiles.
-
-version 1.2.38rc01 [June 24, 2009]
-  No changes.
-
-version 1.2.38rc02 [June 29, 2009]
-  Added a reference to the libpng license in each source file.
-
-version 1.2.38rc03 [July 11, 2009]
-  Revised references to the libpng license in pngconf.h and contrib/visupng
-    source files.
-  Rebuilt configure scripts with autoconf-2.63.
-
-version 1.0.47 and 1.2.38 [July 16, 2009]
-  No changes.
-
-version 1.2.39beta01 [July 25, 2009]
-  Added a prototype for png_64bit_product() in png.c
-
-version 1.2.39beta02 [July 27, 2009]
-  Avoid a possible NULL dereference in debug build, in png_set_text_2().
-    (bug introduced in libpng-0.95, discovered by Evan Rouault)
-
-version 1.2.39beta03 [July 29, 2009]
-  Relocated new png_64_bit_product() prototype into png.h
-  Expanded the information about prototypes in the libpng style section of
-    the documentation.
-  Rebuilt configure scripts with autoconf-2.64.
-
-version 1.2.39beta04 [August 1, 2009]
-  Replaced *.tar.lzma with *.txz in distribution.  Get the xz codec
-    from <http://tukaani.org/xz>.
-
-version 1.2.39beta05 [August 1, 2009]
-  Reject attempt to write iCCP chunk with negative embedded profile length
-    (JD Chen)
-
-version 1.2.39c01 [August 6, 2009]
-  No changes.
-
-version 1.2.39 and 1.0.48 [August 13, 2009]
-  No changes.
-
-version 1.2.40beta01 [August 20, 2009]
-  Removed an extra png_debug() recently added to png_write_find_filter().
-  Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
-
-version 1.2.40rc01 [September 2, 2009]
-  Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
-
-version 1.2.40 and 1.0.49 [October 11, 2009]
-  No changes.
-
-version 1.0.50 [September 10, 2009]
-  Removed some editing cruft from pngset.c and pngwutil.c.
-
-version 1.2.41beta01 [September 25, 2009]
-  Moved redundant IHDR checking into new png_check_IHDR() in png.c
-    and report all errors found in the IHDR data.
-  Eliminated useless call to png_check_cHRM() from pngset.c
-  Expanded TAB characters in pngrtran.c
-
-version 1.2.41beta02 [September 30, 2009]
-  Revised png_check_IHDR().
-
-version 1.2.41beta03 [October 1, 2009]
-  Revised png_check_IHDR() again, to check info_ptr members instead of
-    the contents of the returned parameters.
-
-version 1.2.41beta04 [October 7, 2009]
-  Added "xcode" project similar one already in libpng-1.4.0beta (Alam Arias).
-  Ported some cosmetic changes from libpng-1.4.0beta86.
-  Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
-
-version 1.2.41beta05 [October 11, 2009]
-  Revised pngconf.h to make it easier to enable iTXt support.  Previously
-    defining PNG_iTXt_SUPPORTED would not work as expected.
-  Ported some cosmetic changes from libpng-1.4.0beta87, changing
-    many "#if defined(x)" to "#ifdef x".
-
 Send comments/corrections/commendations to png-mng-implement at lists.sf.net
 (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement
@@ -2503,4 +2257,3 @@ to subscribe)
 or to glennrp at users.sourceforge.net
 
 Glenn R-P
-*/

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.2.41beta05 - October 11, 2009
+Installing libpng version 1.0.41 - October 31, 2008
 
 On Unix/Linux and similar systems, you can simply type
 
@@ -44,7 +44,7 @@ to have access to the zlib.h and zconf.h include files that
 correspond to the version of zlib that's installed.
 
 You can rename the directories that you downloaded (they
-might be called "libpng-1.2.41beta05" or "lpng109" and "zlib-1.2.1"
+might be called "libpng-1.0.41" or "lpng109" and "zlib-1.2.1"
 or "zlib121") so that you have directories called "zlib" and "libpng".
 
 Your directory structure should look like this:
@@ -101,9 +101,9 @@ include
  CMakeLists.txt    =>  "cmake" script
  makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
  makefile.elf      =>  Linux/ELF makefile symbol versioning,
-                       gcc, creates libpng12.so.0.1.2.41beta05)
+                       gcc, creates libpng10.so.0.1.0.41)
  makefile.linux    =>  Linux/ELF makefile
-                       (gcc, creates libpng12.so.0.1.2.41beta05)
+                       (gcc, creates libpng10.so.0.1.0.41)
  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 +120,19 @@ 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.ne12bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
-                       makes libpng12.so
+ makefile.ne10bsd  =>  NetBSD/cc makefile, uses PNGGCCRD,
+                       makes libpng10.so
  makefile.openbsd  =>  OpenBSD makefile
  makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
  makefile.sggcc    =>  Silicon Graphics (gcc,
-                       creates libpng12.so.0.1.2.41beta05)
+                       creates libpng10.so.0.1.0.41)
  makefile.sunos    =>  Sun makefile
  makefile.solaris  =>  Solaris 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.41beta05)
+                       creates libpng10.so.0.1.0.41)
  makefile.solaris-x86 =>  Solaris/intelMMX 2.X makefile (gcc,
-                       creates libpng12.so.0.1.2.41beta05)
+                       creates libpng10.so.0.1.0.41)
  makefile.so9      =>  Solaris 9 makefile (gcc,
-                       creates libpng12.so.0.1.2.41beta05)
+                       creates libpng10.so.0.1.0.41)
  makefile.32sunu   =>  Sun Ultra 32-bit makefile
  makefile.64sunu   =>  Sun Ultra 64-bit makefile
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc

KNOWNBUG

@@ -1,5 +1,5 @@
 
-Known bugs in libpng version 1.2.41beta05
+Known bugs in libpng version 1.0.41
 
 1. February 23, 2006: The custom makefiles don't build libpng with -lz.
 

LICENSE

@@ -8,10 +8,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-This code is released under the libpng license.
-
-libpng versions 1.2.6, August 15, 2004, through 1.2.41beta05, October 11, 2009, are
-Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
+libpng versions 1.2.6, August 15, 2004, through 1.0.41, October 31, 2008, are
+Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
 
@@ -108,4 +106,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-October 11, 2009
+October 31, 2008

Makefile.am

@@ -2,9 +2,9 @@
 #   Source file for Makefile.in (and hence Makefile)
 #
 # Makefile.am need only be changed on a major version number
-# change (e.g. libpng12 --> libpng14).  In that case seach
+# change (e.g. libpng12 --> libpng13).  In that case seach
 # this file for every instance of the old base name (libpng12)
-# and change to the new one (libpng14), then change the
+# and change to the new one (libpng13), then change the
 # -version-number settings below so that the new values have
 # the correct major part (first field).
 
@@ -16,7 +16,7 @@ AUTOMAKE_OPTIONS = foreign
 # test programs - run on make check, make distcheck
 check_PROGRAMS= pngtest
 pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng12.la
+pngtest_LDADD = libpng10.la
 TESTS = test-pngtest.sh
 TESTS_ENVIRONMENT= srcdir=$(srcdir) 
 
@@ -24,39 +24,39 @@ TESTS_ENVIRONMENT= srcdir=$(srcdir)
 dist_man_MANS= libpng.3 libpngpf.3 png.5
 
 # generate the -config scripts if required
-binconfigs= libpng12-config 
-EXTRA_SCRIPTS= libpng-config libpng12-config
+binconfigs= libpng10-config 
+EXTRA_SCRIPTS= libpng-config libpng10-config
 bin_SCRIPTS= @binconfigs@
 
 # rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng12.la @compatlib@
+lib_LTLIBRARIES=libpng10.la @compatlib@
 EXTRA_LTLIBRARIES= libpng.la
-libpng12_la_SOURCES = png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+libpng10_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 \
 	png.h pngconf.h
-libpng_la_SOURCES = $(libpng12_la_SOURCES)
+libpng_la_SOURCES = $(libpng10_la_SOURCES)
 
 libpng_la_CPPFLAGS = @LIBPNG_DEFINES@
-libpng12_la_CPPFLAGS = @LIBPNG_DEFINES@
+libpng10_la_CPPFLAGS = @LIBPNG_DEFINES@
 
 # MAJOR UPGRADE: the version-number settings below must be changed.
-libpng12_la_LDFLAGS = -no-undefined -export-dynamic \
+libpng10_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 3:@PNGLIB_RELEASE@:0
+	-version-number 2:@PNGLIB_RELEASE@:0
 
 if HAVE_LD_VERSION_SCRIPT
   # Versioned symbols and restricted exports
-  libpng12_la_LDFLAGS += -Wl,--version-script=libpng.vers
-  libpng12_la_DEPENDENCIES = libpng.vers
+  libpng10_la_LDFLAGS += -Wl,--version-script=libpng.vers
+  libpng10_la_DEPENDENCIES = libpng.vers
 else
   # Only restricted exports when possible
-  libpng12_la_LDFLAGS += -export-symbols libpng.sym
-  libpng12_la_DEPENDENCIES = libpng.sym
+  libpng10_la_LDFLAGS += -export-symbols libpng.sym
+  libpng10_la_DEPENDENCIES = libpng.sym
 endif
-libpng_la_DEPENDENCIES = $(libpng12_la_DEPENDENCIES)
+libpng_la_DEPENDENCIES = $(libpng10_la_DEPENDENCIES)
 
 # Avoid depending upon Character Ranges.
 AN = '_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
@@ -68,7 +68,7 @@ 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 = libpng12.pc
+pkgconfig_DATA = libpng10.pc
 
 #extra source distribution files.
 EXTRA_DIST= \
@@ -86,9 +86,9 @@ EXTRA_DIST= \
 	${srcdir}/contrib/pngsuite/* \
 	${srcdir}/contrib/visupng/* \
 	$(TESTS) \
-	example.c libpng-1.2.41beta05.txt pngvcrd.c 
+	example.c libpng-1.0.41.txt pngvcrd.c 
 
-CLEANFILES= pngout.png libpng12.pc libpng12-config libpng.vers \
+CLEANFILES= pngout.png libpng10.pc libpng10-config libpng.vers \
 libpng.sym
 
 MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
@@ -126,7 +126,7 @@ 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 libpng12 to be used
+# do evil things to libpng to cause libpng10 to be used
 install-exec-hook:
 	cd $(DESTDIR)$(bindir); rm -f libpng-config
 	cd $(DESTDIR)$(bindir); $(LN_S) $(PNGLIB_BASENAME)-config libpng-config

README

@@ -1,4 +1,4 @@
-README for libpng version 1.2.41beta05 - October 11, 2009 (shared library 12.0)
+README for libpng version 1.0.41 - October 31, 2008 (shared library 10.0)
 See the note about version numbers near the top of png.h
 
 See INSTALL for instructions on how to install libpng.
@@ -194,11 +194,11 @@ Files in this distribution:
        descrip.mms      =>  VMS makefile for MMS or MMK
        makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
        makefile.elf     =>  Linux/ELF makefile symbol versioning,
-                            gcc, creates libpng12.so.0.1.2.41beta05)
+                            gcc, creates libpng10.so.0.1.0.41)
        makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.41beta05)
+                            (gcc, creates libpng10.so.0.1.0.41)
        makefile.gcmmx   =>  Linux/ELF makefile
-                            (gcc, creates libpng12.so.0.1.2.41beta05,
+                            (gcc, creates libpng10.so.0.1.0.41,
                             uses assembler code tuned for Intel MMX platform)
        makefile.gcc     =>  Generic makefile (gcc, creates static libpng.a)
        makefile.knr     =>  Archaic UNIX Makefile that converts files with
@@ -216,16 +216,16 @@ 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.ne12bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng12.so
+       makefile.ne10bsd  =>  NetBSD/cc makefile, PNGGCCRD, makes libpng10.so
        makefile.openbsd =>  OpenBSD makefile
        makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
        makefile.sggcc   =>  Silicon Graphics
-                            (gcc, creates libpng12.so.0.1.2.41beta05)
+                            (gcc, creates libpng10.so.0.1.0.41)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng12.so.0.1.2.41beta05)
+                            (gcc, creates libpng10.so.0.1.0.41)
        makefile.so9     =>  Solaris 9 makefile
-                            (gcc, creates libpng12.so.0.1.2.41beta05)
+                            (gcc, creates libpng10.so.0.1.0.41)
        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

TODO

@@ -22,4 +22,3 @@ Build gamma tables using fixed point (and do away with floating point entirely).
 Use greater precision when changing to linear gamma for compositing against
   background and doing rgb-to-gray transformation.
 Investigate pre-incremented loop counters and other loop constructions.
-Add interpolated method of handling interlacing.

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      October 11, 2009
+      October 31, 2008
 
       Since the PNG Development group is an ad-hoc body, we can't make
       an official declaration.
 
       This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.2.41beta05 are Y2K compliant.  It is my belief that earlier
+      upward through 1.0.41 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

config.guess

@@ -4,7 +4,7 @@
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 #   Free Software Foundation, Inc.
 
-timestamp='2009-04-27'
+timestamp='2008-01-08'
 
 # This file is free software; you can redistribute it and/or modify it
 # under the terms of the GNU General Public License as published by
@@ -324,9 +324,6 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	case `/usr/bin/uname -p` in
 	    sparc) echo sparc-icl-nx7; exit ;;
 	esac ;;
-    s390x:SunOS:*:*)
-	echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
-	exit ;;
     sun4H:SunOS:5.*:*)
 	echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
@@ -334,20 +331,7 @@ case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
 	echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
     i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
-	eval $set_cc_for_build
-	SUN_ARCH="i386"
-	# If there is a compiler, see if it is configured for 64-bit objects.
-	# Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
-	# This test works for both compilers.
-	if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
-	    if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
-		(CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
-		grep IS_64BIT_ARCH >/dev/null
-	    then
-		SUN_ARCH="x86_64"
-	    fi
-	fi
-	echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
+	echo i386-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
 	exit ;;
     sun4*:SunOS:6*:*)
 	# According to config.sub, this is the proper way to canonicalize
@@ -812,7 +796,7 @@ EOF
 	    x86)
 		echo i586-pc-interix${UNAME_RELEASE}
 		exit ;;
-	    EM64T | authenticamd | genuineintel)
+	    EM64T | authenticamd)
 		echo x86_64-unknown-interix${UNAME_RELEASE}
 		exit ;;
 	    IA64)
@@ -951,9 +935,6 @@ EOF
 	if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
 	echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
 	exit ;;
-    padre:Linux:*:*)
-	echo sparc-unknown-linux-gnu
-	exit ;;
     parisc:Linux:*:* | hppa:Linux:*:*)
 	# Look for CPU level
 	case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
@@ -1004,6 +985,9 @@ EOF
 	  a.out-i386-linux)
 		echo "${UNAME_MACHINE}-pc-linux-gnuaout"
 		exit ;;
+	  coff-i386)
+		echo "${UNAME_MACHINE}-pc-linux-gnucoff"
+		exit ;;
 	  "")
 		# Either a pre-BFD a.out linker (linux-gnuoldld) or
 		# one that does not give us useful --help.
@@ -1118,11 +1102,8 @@ EOF
     pc:*:*:*)
 	# Left here for compatibility:
         # uname -m prints for DJGPP always 'pc', but it prints nothing about
-        # the processor, so we play safe by assuming i586.
-	# Note: whatever this is, it MUST be the same as what config.sub
-	# prints for the "djgpp" host, or else GDB configury will decide that
-	# this is a cross-build.
-	echo i586-pc-msdosdjgpp
+        # the processor, so we play safe by assuming i386.
+	echo i386-pc-msdosdjgpp
         exit ;;
     Intel:Mach:3*:*)
 	echo i386-pc-mach3
@@ -1160,16 +1141,6 @@ EOF
     3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
         /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
           && { echo i486-ncr-sysv4; exit; } ;;
-    NCR*:*:4.2:* | MPRAS*:*:4.2:*)
-	OS_REL='.3'
-	test -r /etc/.relid \
-	    && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
-	/bin/uname -p 2>/dev/null | grep 86 >/dev/null \
-	    && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
-	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
-	/bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
-	    && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
     m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
 	echo m68k-unknown-lynxos${UNAME_RELEASE}
 	exit ;;
@@ -1245,9 +1216,6 @@ EOF
     BePC:BeOS:*:*)	# BeOS running on Intel PC compatible.
 	echo i586-pc-beos
 	exit ;;
-    BePC:Haiku:*:*)	# Haiku running on Intel PC compatible.
-	echo i586-pc-haiku
-	exit ;;
     SX-4:SUPER-UX:*:*)
 	echo sx4-nec-superux${UNAME_RELEASE}
 	exit ;;
@@ -1356,9 +1324,6 @@ EOF
     i*86:rdos:*:*)
 	echo ${UNAME_MACHINE}-pc-rdos
 	exit ;;
-    i*86:AROS:*:*)
-	echo ${UNAME_MACHINE}-pc-aros
-	exit ;;
 esac
 
 #echo '(No uname command or uname output not recognized.)' 1>&2
@@ -1519,9 +1484,9 @@ This script, last modified $timestamp, has failed to recognize
 the operating system you are using. It is advised that you
 download the most up to date version of the config scripts from
 
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
+  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.guess
 and
-  http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
+  http://savannah.gnu.org/cgi-bin/viewcvs/*checkout*/config/config/config.sub
 
 If the version you run ($0) is already up to date, please
 send the following data and any information you think might be

config.h.in

@@ -64,9 +64,6 @@
 /* Define to the one symbol short name of this package. */
 #undef PACKAGE_TARNAME
 
-/* Define to the home page for this package. */
-#undef PACKAGE_URL
-
 /* Define to the version of this package. */
 #undef PACKAGE_VERSION
 

config.sub

@@ -4,7 +4,7 @@
 #   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
 #   Free Software Foundation, Inc.
 
-timestamp='2009-04-17'
+timestamp='2008-01-16'
 
 # This file is (in principle) common to ALL GNU software.
 # The presence of a machine in this file suggests that SOME GNU software
@@ -122,7 +122,6 @@ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
 case $maybe_os in
   nto-qnx* | linux-gnu* | linux-dietlibc | linux-newlib* | linux-uclibc* | \
   uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | knetbsd*-gnu* | netbsd*-gnu* | \
-  kopensolaris*-gnu* | \
   storm-chaos* | os2-emx* | rtmk-nova*)
     os=-$maybe_os
     basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
@@ -250,16 +249,13 @@ case $basic_machine in
 	| h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
 	| i370 | i860 | i960 | ia64 \
 	| ip2k | iq2000 \
-	| lm32 \
 	| m32c | m32r | m32rle | m68000 | m68k | m88k \
-	| maxq | mb | microblaze | mcore | mep | metag \
+	| maxq | mb | microblaze | mcore | mep \
 	| mips | mipsbe | mipseb | mipsel | mipsle \
 	| mips16 \
 	| mips64 | mips64el \
-	| mips64octeon | mips64octeonel \
-	| mips64orion | mips64orionel \
-	| mips64r5900 | mips64r5900el \
 	| mips64vr | mips64vrel \
+	| mips64orion | mips64orionel \
 	| mips64vr4100 | mips64vr4100el \
 	| mips64vr4300 | mips64vr4300el \
 	| mips64vr5000 | mips64vr5000el \
@@ -272,7 +268,6 @@ case $basic_machine in
 	| mipsisa64sr71k | mipsisa64sr71kel \
 	| mipstx39 | mipstx39el \
 	| mn10200 | mn10300 \
-	| moxie \
 	| mt \
 	| msp430 \
 	| nios | nios2 \
@@ -282,7 +277,7 @@ case $basic_machine in
 	| powerpc | powerpc64 | powerpc64le | powerpcle | ppcbe \
 	| pyramid \
 	| score \
-	| sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
+	| sh | sh[1234] | sh[24]a | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
 	| sh64 | sh64le \
 	| sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
 	| sparcv8 | sparcv9 | sparcv9b | sparcv9v \
@@ -291,7 +286,7 @@ case $basic_machine in
 	| v850 | v850e \
 	| we32k \
 	| x86 | xc16x | xscale | xscalee[bl] | xstormy16 | xtensa \
-	| z8k | z80)
+	| z8k)
 		basic_machine=$basic_machine-unknown
 		;;
 	m6811 | m68hc11 | m6812 | m68hc12)
@@ -334,17 +329,14 @@ case $basic_machine in
 	| hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
 	| i*86-* | i860-* | i960-* | ia64-* \
 	| ip2k-* | iq2000-* \
-	| lm32-* \
 	| m32c-* | m32r-* | m32rle-* \
 	| m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
-	| m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
+	| m88110-* | m88k-* | maxq-* | mcore-* \
 	| mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
 	| mips16-* \
 	| mips64-* | mips64el-* \
-	| mips64octeon-* | mips64octeonel-* \
-	| mips64orion-* | mips64orionel-* \
-	| mips64r5900-* | mips64r5900el-* \
 	| mips64vr-* | mips64vrel-* \
+	| mips64orion-* | mips64orionel-* \
 	| mips64vr4100-* | mips64vr4100el-* \
 	| mips64vr4300-* | mips64vr4300el-* \
 	| mips64vr5000-* | mips64vr5000el-* \
@@ -366,20 +358,20 @@ case $basic_machine in
 	| powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* | ppcbe-* \
 	| pyramid-* \
 	| romp-* | rs6000-* \
-	| sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
+	| sh-* | sh[1234]-* | sh[24]a-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
 	| shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
 	| sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
 	| sparclite-* \
 	| sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | strongarm-* | sv1-* | sx?-* \
 	| tahoe-* | thumb-* \
-	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* | tile-* \
+	| tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
 	| tron-* \
 	| v850-* | v850e-* | vax-* \
 	| we32k-* \
 	| x86-* | x86_64-* | xc16x-* | xps100-* | xscale-* | xscalee[bl]-* \
 	| xstormy16-* | xtensa*-* \
 	| ymp-* \
-	| z8k-* | z80-*)
+	| z8k-*)
 		;;
 	# Recognize the basic CPU types without company name, with glob match.
 	xtensa*)
@@ -447,10 +439,6 @@ case $basic_machine in
 		basic_machine=m68k-apollo
 		os=-bsd
 		;;
-	aros)
-		basic_machine=i386-pc
-		os=-aros
-		;;
 	aux)
 		basic_machine=m68k-apple
 		os=-aux
@@ -471,10 +459,6 @@ case $basic_machine in
 		basic_machine=c90-cray
 		os=-unicos
 		;;
-        cegcc)
-		basic_machine=arm-unknown
-		os=-cegcc
-		;;
 	convex-c1)
 		basic_machine=c1-convex
 		os=-bsd
@@ -542,10 +526,6 @@ case $basic_machine in
 		basic_machine=m88k-motorola
 		os=-sysv3
 		;;
-	dicos)
-		basic_machine=i686-pc
-		os=-dicos
-		;;
 	djgpp)
 		basic_machine=i586-pc
 		os=-msdosdjgpp
@@ -1148,10 +1128,6 @@ case $basic_machine in
 		basic_machine=z8k-unknown
 		os=-sim
 		;;
-	z80-*-coff)
-		basic_machine=z80-unknown
-		os=-sim
-		;;
 	none)
 		basic_machine=none-none
 		os=-none
@@ -1190,7 +1166,7 @@ case $basic_machine in
 	we32k)
 		basic_machine=we32k-att
 		;;
-	sh[1234] | sh[24]a | sh[24]aeb | sh[34]eb | sh[1234]le | sh[23]ele)
+	sh[1234] | sh[24]a | sh[34]eb | sh[1234]le | sh[23]ele)
 		basic_machine=sh-unknown
 		;;
 	sparc | sparcv8 | sparcv9 | sparcv9b | sparcv9v)
@@ -1262,9 +1238,8 @@ case $os in
 	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
 	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -sunos | -sunos[34]*\
 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -solaris* | -sym* \
-	      | -kopensolaris* \
 	      | -amigaos* | -amigados* | -msdos* | -newsos* | -unicos* | -aof* \
-	      | -aos* | -aros* \
+	      | -aos* \
 	      | -nindy* | -vxsim* | -vxworks* | -ebmon* | -hms* | -mvs* \
 	      | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
 	      | -hiux* | -386bsd* | -knetbsd* | -mirbsd* | -netbsd* \
@@ -1273,7 +1248,7 @@ case $os in
 	      | -bosx* | -nextstep* | -cxux* | -aout* | -elf* | -oabi* \
 	      | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
 	      | -udi* | -eabi* | -lites* | -ieee* | -go32* | -aux* \
-	      | -chorusos* | -chorusrdb* | -cegcc* \
+	      | -chorusos* | -chorusrdb* \
 	      | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
 	      | -mingw32* | -linux-gnu* | -linux-newlib* | -linux-uclibc* \
 	      | -uxpv* | -beos* | -mpeix* | -udk* \
@@ -1413,9 +1388,6 @@ case $os in
 	-zvmoe)
 		os=-zvmoe
 		;;
-	-dicos*)
-		os=-dicos
-		;;
 	-none)
 		;;
 	*)

configure.ac

@@ -18,14 +18,14 @@ AC_PREREQ(2.59)
 
 dnl Version number stuff here:
 
-AC_INIT([libpng], [1.2.41beta05], [png-mng-implement@lists.sourceforge.net])
+AC_INIT([libpng], [1.0.41], [png-mng-implement@lists.sourceforge.net])
 AM_INIT_AUTOMAKE
 dnl stop configure from automagically running automake
 AM_MAINTAINER_MODE
 
-PNGLIB_VERSION=1.2.41beta05
+PNGLIB_VERSION=1.0.41
 PNGLIB_MAJOR=1
-PNGLIB_MINOR=2
+PNGLIB_MINOR=0
 PNGLIB_RELEASE=41
 
 dnl End of version number stuff

contrib/pngminim/decoder/README

@@ -1,9 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-
-To build a minimal read-only decoder with embedded libpng and zlib, run
-
-    gather.sh  # to collect needed files from pngminus, libpng, and zlib
-    make
-
-If you prefer to use the shared libraries, go to contrib/pngminus
-and build the png2pnm application there. 

contrib/pngminim/decoder/gather.sh

@@ -1,8 +0,0 @@
-cp ../../pngminus/png2pnm.c pngm2pnm.c
-cp ../../../*.h .
-cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngpread.c pngw*.c
-# change the following 2 lines if zlib is somewhere else
-cp ../../../../zlib/*.h .
-cp ../../../../zlib/*.c .
-rm minigzip.c example.c compress.c deflate.c 

contrib/pngminim/decoder/makefile

@@ -1,44 +0,0 @@
-# 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$(O) \
-	pngread$(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

@@ -1,78 +0,0 @@
-/* minrdpngconf.h: headers to make a minimal png-read-only library
- *
- * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
- *
- * This code is released under the zlib/libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
- */
-
-#ifndef MINRDPNGCONF_H
-#define MINRDPNGCONF_H
-
-#ifdef NJET
-  /* No 16-bit support beyond reading with strip_16 */
-#endif
-
-#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
-#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_sRGB
-#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

@@ -1,9 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-
-To build a minimal write-only decoder with embedded libpng and zlib, run
-
-    gather.sh  # to collect needed files from pngminus, libpng, and zlib
-    make
- 
-If you prefer to use the shared libraries, go to contrib/pngminus
-and build the pnm2png application there. 

contrib/pngminim/encoder/dummy_inflate.c

@@ -1,27 +0,0 @@
-#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

@@ -1,9 +0,0 @@
-cp ../../pngminus/pnm2png.c pnm2pngm.c
-cp ../../../*.h .
-cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngr*.c pngpread.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

@@ -1,43 +0,0 @@
-# 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$(O) \
-	pngset$(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

@@ -1,73 +0,0 @@
-/* minwrpngconf.h: headers to make a minimal png-write-only library
- *
- * Copyright (c) 2007, 2009 Glenn Randers-Pehrson
- *
- * This code is released under the zlib/libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * 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
-#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_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_sRGB
-#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
-#define PNG_NO_WRITE_FLUSH
-
-#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 */

contrib/pngminim/preader/README

@@ -1,14 +0,0 @@
-This demonstrates the use of PNG_USER_CONFIG and pngusr.h
-
-To build a minimal read-only progressive decoder embedded libpng and
-zlib and with your system's X library, run
-
-    gather.sh # to collect needed files from gregbook, libpng, and zlib
-
-Edit makefile if required, to find your X library and include files,
-then
-    
-    make
- 
-If you prefer to use the shared libraries, go to contrib/gregbook
-and build the rpng2-x application there. 

contrib/pngminim/preader/gather.sh

@@ -1,9 +0,0 @@
-cp ../../gregbook/rpng2-x.c ../../gregbook/readpng2.[ch] .
-cp ../../gregbook/COPYING ../../gregbook/LICENSE .
-cp ../../../*.h .
-cp ../../../*.c .
-rm example.c pnggccrd.c pngvcrd.c pngtest.c pngw*.c
-# change the following 2 lines if zlib is somewhere else
-cp ../../../../zlib/*.h .
-cp ../../../../zlib/*.c .
-rm minigzip.c example.c compress.c deflate.c 

contrib/pngminim/preader/makefile

@@ -1,60 +0,0 @@
-# Makefile for PngMinus (rpng2)
-# Linux / Unix
-
-#CC=cc
-CC=gcc
-LD=$(CC)
-
-RM=rm -f
-
-#XINC = -I/usr/include			# old-style, stock X distributions
-#XLIB = -L/usr/lib/X11 -lX11		#  (including SGI IRIX)
-
-#XINC = -I/usr/openwin/include		# Sun workstations (OpenWindows)
-#XLIB = -L/usr/openwin/lib -lX11
-
-XINC = -I/usr/X11R6/include		# new X distributions (X.org, etc.)
-XLIB = -L/usr/X11R6/lib -lX11
-#XLIB = -L/usr/X11R6/lib64 -lX11	# e.g., Red Hat on AMD64
-
-#XINC = -I/usr/local/include   		# FreeBSD
-#XLIB = -L/usr/local/lib -lX11
-
-#LIBS = $(XLIB)
-LIBS = $(XLIB) -lm                      #platforms that need libm
-
-CFLAGS=-DPNG_USER_CONFIG -DNO_GZCOMPRESS -DNO_GZIP \
-       -DdeflateParams\(a,b,c\)=Z_OK -I. $(XINC) -O1
-
-C=.c
-O=.o
-L=.a
-E=
-
-ZOBJS  = adler32$(O) crc32$(O) gzio$(O) \
-	 infback$(O) inffast$(O) inflate$(O) inftrees$(O) \
-	 trees$(O) uncompr$(O) zutil$(O)
-
-OBJS  = rpng2-x$(O) readpng2$(O) png$(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 readpng2.h pngusr.h zlib.h
-	$(CC) -c $(CFLAGS) $<
-
-# dependencies
-
-all: rpng2-x$(E)
-
-rpng2-x$(E): $(OBJS)
-	$(LD) -o rpng2-x$(E) $(OBJS) $(LIBS)
-	strip rpng2-x$(E)
-
-clean:
-	$(RM) rpng2-x$(O)
-	$(RM) rpng2-x$(E)
-	$(RM) $(OBJS)
-
-# End of makefile for rpng2-x

contrib/pngminim/preader/pngusr.h

@@ -1,68 +0,0 @@
-/* minrdpngconf.h: headers to make a minimal png-read-only library
- *
- * Copyright (c) 2009 Glenn Randers-Pehrson
- *
- * This code is released under the zlib/libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * Derived from pngcrush.h, Copyright 1998-2007, Glenn Randers-Pehrson
- */
-
-#ifndef MINPRDPNGCONF_H
-#define MINPRDPNGCONF_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_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
-#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_cHRM
-#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
-
-#endif /* MINPRDPNGCONF_H */

contrib/visupng/PngFile.c

@@ -2,11 +2,8 @@
 //  PNGFILE.C -- Image File Functions
 //-------------------------------------
 
-// Copyright 2000, Willem van Schaik.
-//
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
+// use, see the copyright/license/disclaimer notice in png.h
 
 #include <windows.h>
 #include <commdlg.h>

contrib/visupng/PngFile.h

@@ -2,11 +2,8 @@
 //  PNGFILE.H -- Header File for pngfile.c
 //------------------------------------------
 
-// Copyright 2000, Willem van Schaik.
-
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
+// use, see the copyright/license/disclaimer notice in png.h
 
 #include <stdio.h>
 #include <stdlib.h>

contrib/visupng/README.txt

@@ -1,11 +1,8 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng
 ------------------------------------------------------------------------
 
-Copyright 2000, Willem van Schaik.
-
-This code is released under the libpng license.
-For conditions of distribution and use, see the disclaimer
-and license in png.h
+Copyright 2000, Willem van Schaik.  For conditions of distribution and
+use, see the copyright/license/disclaimer notice in png.h
 
 As a PNG .dll demo VisualPng is finished. More features would only hinder
 the program's objective. However, further extensions (like support for other 

contrib/visupng/VisualPng.c

@@ -2,11 +2,8 @@
 //  VisualPng.C -- Shows a PNG image
 //------------------------------------
 
-// Copyright 2000, Willem van Schaik.
-
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
+// Copyright 2000, Willem van Schaik.  For conditions of distribution and
+// use, see the copyright/license/disclaimer notice in png.h
 
 // switches
 

depcomp

@@ -1,10 +1,10 @@
 #! /bin/sh
 # depcomp - compile a program generating dependencies as side-effects
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2007-03-29.01
 
-# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007, 2009 Free
-# Software Foundation, Inc.
+# Copyright (C) 1999, 2000, 2003, 2004, 2005, 2006, 2007 Free Software
+# Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,7 +17,9 @@ scriptversion=2009-04-28.21; # UTC
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -85,15 +87,6 @@ if test "$depmode" = dashXmstdout; then
    depmode=dashmstdout
 fi
 
-cygpath_u="cygpath -u -f -"
-if test "$depmode" = msvcmsys; then
-   # This is just like msvisualcpp but w/o cygpath translation.
-   # Just convert the backslash-escaped backslashes to single forward
-   # slashes to satisfy depend.m4
-   cygpath_u="sed s,\\\\\\\\,/,g"
-   depmode=msvisualcpp
-fi
-
 case "$depmode" in
 gcc3)
 ## gcc 3 implements dependency tracking that does exactly what
@@ -199,14 +192,14 @@ sgi)
 ' < "$tmpdepfile" \
     | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' | \
     tr '
-' ' ' >> "$depfile"
-    echo >> "$depfile"
+' ' ' >> $depfile
+    echo >> $depfile
 
     # The second pass generates a dummy entry for each header file.
     tr ' ' '
 ' < "$tmpdepfile" \
    | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
-   >> "$depfile"
+   >> $depfile
   else
     # The sourcefile does not contain any dependencies, so just
     # store a dummy comment line, to avoid errors with the Makefile
@@ -335,12 +328,7 @@ hp2)
   if test -f "$tmpdepfile"; then
     sed -e "s,^.*\.[a-z]*:,$object:," "$tmpdepfile" > "$depfile"
     # Add `dependent.h:' lines.
-    sed -ne '2,${
-	       s/^ *//
-	       s/ \\*$//
-	       s/$/:/
-	       p
-	     }' "$tmpdepfile" >> "$depfile"
+    sed -ne '2,${; s/^ *//; s/ \\*$//; s/$/:/; p;}' "$tmpdepfile" >> "$depfile"
   else
     echo "#dummy" > "$depfile"
   fi
@@ -416,7 +404,7 @@ dashmstdout)
 
   # Remove the call to Libtool.
   if test "$libtool" = yes; then
-    while test "X$1" != 'X--mode=compile'; do
+    while test $1 != '--mode=compile'; do
       shift
     done
     shift
@@ -467,39 +455,32 @@ makedepend)
   "$@" || exit $?
   # Remove any Libtool call
   if test "$libtool" = yes; then
-    while test "X$1" != 'X--mode=compile'; do
+    while test $1 != '--mode=compile'; do
       shift
     done
     shift
   fi
   # X makedepend
   shift
-  cleared=no eat=no
-  for arg
-  do
+  cleared=no
+  for arg in "$@"; do
     case $cleared in
     no)
       set ""; shift
       cleared=yes ;;
     esac
-    if test $eat = yes; then
-      eat=no
-      continue
-    fi
     case "$arg" in
     -D*|-I*)
       set fnord "$@" "$arg"; shift ;;
     # Strip any option that makedepend may not understand.  Remove
     # the object too, otherwise makedepend will parse it as a source file.
-    -arch)
-      eat=yes ;;
     -*|$object)
       ;;
     *)
       set fnord "$@" "$arg"; shift ;;
     esac
   done
-  obj_suffix=`echo "$object" | sed 's/^.*\././'`
+  obj_suffix="`echo $object | sed 's/^.*\././'`"
   touch "$tmpdepfile"
   ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
   rm -f "$depfile"
@@ -519,7 +500,7 @@ cpp)
 
   # Remove the call to Libtool.
   if test "$libtool" = yes; then
-    while test "X$1" != 'X--mode=compile'; do
+    while test $1 != '--mode=compile'; do
       shift
     done
     shift
@@ -557,27 +538,13 @@ cpp)
 
 msvisualcpp)
   # Important note: in order to support this mode, a compiler *must*
-  # always write the preprocessed file to stdout.
+  # always write the preprocessed file to stdout, regardless of -o,
+  # because we must use -o when running libtool.
   "$@" || exit $?
-
-  # Remove the call to Libtool.
-  if test "$libtool" = yes; then
-    while test "X$1" != 'X--mode=compile'; do
-      shift
-    done
-    shift
-  fi
-
   IFS=" "
   for arg
   do
     case "$arg" in
-    -o)
-      shift
-      ;;
-    $object)
-      shift
-      ;;
     "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
 	set fnord "$@"
 	shift
@@ -590,23 +557,16 @@ msvisualcpp)
 	;;
     esac
   done
-  "$@" -E 2>/dev/null |
-  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
+  "$@" -E |
+  sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::echo "`cygpath -u \\"\1\\"`":p' | sort | uniq > "$tmpdepfile"
   rm -f "$depfile"
   echo "$object : \\" > "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::	\1 \\:p' >> "$depfile"
   echo "	" >> "$depfile"
-  sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
+  . "$tmpdepfile" | sed 's% %\\ %g' | sed -n '/^\(.*\)$/ s::\1\::p' >> "$depfile"
   rm -f "$tmpdepfile"
   ;;
 
-msvcmsys)
-  # This case exists only to let depend.m4 do its work.  It works by
-  # looking at the text of this script.  This case will never be run,
-  # since it is checked for above.
-  exit 1
-  ;;
-
 none)
   exec "$@"
   ;;
@@ -625,6 +585,5 @@ exit 0
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
+# time-stamp-end: "$"
 # End:

example.c

@@ -2,9 +2,9 @@
 #if 0 /* in case someone actually tries to compile this */
 
 /* example.c - an example of using libpng
- * Last changed in libpng 1.2.37 [June 4, 2009]
+ * Last changed in libpng 1.2.33 [October 31, 2008]
  * This file has been placed in the public domain by the authors.
- * Maintained 1998-2009 Glenn Randers-Pehrson
+ * Maintained 1998-2008 Glenn Randers-Pehrson
  * Maintained 1996, 1997 Andreas Dilger)
  * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  */
@@ -91,15 +91,14 @@ void read_png(char *file_name)  /* We need to open the file */
 
    if ((fp = fopen(file_name, "rb")) == NULL)
       return (ERROR);
-
 #else no_open_file /* prototype 2 */
-void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
+void read_png(FILE *fp, unsigned int sig_read)  /* file is already open */
 {
    png_structp png_ptr;
    png_infop info_ptr;
    png_uint_32 width, height;
    int bit_depth, color_type, interlace_type;
-#endif no_open_file /* Only use one prototype! */
+#endif no_open_file /* only use one prototype! */
 
    /* Create and initialize the png_struct with the desired error handler
     * functions.  If you want to use the default stderr and longjump method,
@@ -165,7 +164,6 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
     * pixels) into the info structure with this call:
     */
    png_read_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
-
 #else
    /* OK, you're doing it the hard way, with the lower-level functions */
 
@@ -177,13 +175,13 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
        &interlace_type, int_p_NULL, int_p_NULL);
 
-   /* Set up the data transformations you want.  Note that these are all
-    * optional.  Only call them if you want/need them.  Many of the
-    * transformations only work on specific types of images, and many
-    * are mutually exclusive.
-    */
+/* Set up the data transformations you want.  Note that these are all
+ * optional.  Only call them if you want/need them.  Many of the
+ * transformations only work on specific types of images, and many
+ * are mutually exclusive.
+ */
 
-   /* Tell libpng to strip 16 bit/color files down to 8 bits/color */
+   /* tell libpng to strip 16 bit/color files down to 8 bits/color */
    png_set_strip_16(png_ptr);
 
    /* Strip alpha bytes from the input data without combining with the
@@ -230,11 +228,10 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
       png_set_background(png_ptr, &my_background,
                          PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
 
-   /* Some suggestions as to how to get a screen gamma value
-    *
-    * Note that screen gamma is the display_exponent, which includes
-    * the CRT_exponent and any correction for viewing conditions
-    */
+   /* Some suggestions as to how to get a screen gamma value */
+
+   /* Note that screen gamma is the display_exponent, which includes
+    * the CRT_exponent and any correction for viewing conditions */
    if (/* We have a user-defined screen gamma value */)
    {
       screen_gamma = user-defined screen_gamma;
@@ -247,7 +244,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    /* If we don't have another value */
    else
    {
-      screen_gamma = 2.2;  /* A good guess for a PC monitor in a dimly
+      screen_gamma = 2.2;  /* A good guess for a PC monitors in a dimly
                               lit room */
       screen_gamma = 1.7 or 1.0;  /* A good guess for Mac systems */
    }
@@ -280,7 +277,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
       png_colorp palette;
 
       /* This reduces the image to the application supplied palette */
-      if (/* We have our own palette */)
+      if (/* we have our own palette */)
       {
          /* An array of colors to which the image should be dithered */
          png_color std_color_cube[MAX_SCREEN_COLORS];
@@ -300,7 +297,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
       }
    }
 
-   /* Invert monochrome files to have 0 as white and 1 as black */
+   /* invert monochrome files to have 0 as white and 1 as black */
    png_set_invert_mono(png_ptr);
 
    /* If you want to shift the pixel values from the range [0,255] or
@@ -309,20 +306,20 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
     */
    if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
    {
-      png_color_8p sig_bit_p;
+      png_color_8p sig_bit;
 
-      png_get_sBIT(png_ptr, info_ptr, &sig_bit_p);
-      png_set_shift(png_ptr, sig_bit_p);
+      png_get_sBIT(png_ptr, info_ptr, &sig_bit);
+      png_set_shift(png_ptr, sig_bit);
    }
 
-   /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
+   /* flip the RGB pixels to BGR (or RGBA to BGRA) */
    if (color_type & PNG_COLOR_MASK_COLOR)
       png_set_bgr(png_ptr);
 
-   /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
+   /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
    png_set_swap_alpha(png_ptr);
 
-   /* Swap bytes of 16 bit files to least significant byte first */
+   /* swap bytes of 16 bit files to least significant byte first */
    png_set_swap(png_ptr);
 
    /* Add filler (or alpha) byte (before/after each RGB triplet) */
@@ -345,13 +342,11 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
    /* The easiest way to read the image: */
    png_bytep row_pointers[height];
 
-   /* Clear the pointer array */
-   for (row = 0; row < height; row++)
-      row_pointers[row] = NULL;
-
    for (row = 0; row < height; row++)
+   {
       row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
          info_ptr));
+   }
 
    /* Now it's time to read the image.  One of these methods is REQUIRED */
 #ifdef entire /* Read the entire image in one go */
@@ -377,31 +372,32 @@ void read_png(FILE *fp, unsigned int sig_read)  /* File is already open */
 #else no_sparkle /* Read the image using the "rectangle" effect */
          png_read_rows(png_ptr, png_bytepp_NULL, &row_pointers[y],
             number_of_rows);
-#endif no_sparkle /* Use only one of these two methods */
+#endif no_sparkle /* use only one of these two methods */
       }
 
-      /* If you want to display the image after every pass, do so here */
-#endif no_single /* Use only one of these two methods */
+      /* if you want to display the image after every pass, do
+         so here */
+#endif no_single /* use only one of these two methods */
    }
-#endif no_entire /* Use only one of these two methods */
+#endif no_entire /* use only one of these two methods */
 
-   /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+   /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
    png_read_end(png_ptr, info_ptr);
 #endif hilevel
 
    /* At this point you have read the entire image */
 
-   /* Clean up after the read, and free any memory allocated - REQUIRED */
+   /* clean up after the read, and free any memory allocated - REQUIRED */
    png_destroy_read_struct(&png_ptr, &info_ptr, png_infopp_NULL);
 
-   /* Close the file */
+   /* close the file */
    fclose(fp);
 
-   /* That's it */
+   /* that's it */
    return (OK);
 }
 
-/* Progressively read a file */
+/* progressively read a file */
 
 int
 initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
@@ -466,7 +462,7 @@ process_data(png_structp *png_ptr, png_infop *info_ptr,
 
    /* This one's new also.  Simply give it chunks of data as
     * they arrive from the data stream (in order, of course).
-    * On segmented machines, don't give it any more than 64K.
+    * On Segmented machines, don't give it any more than 64K.
     * The library seems to run fine with sizes of 4K, although
     * you can give it much less if necessary (I assume you can
     * give it chunks of 1 byte, but I haven't tried with less
@@ -480,35 +476,34 @@ process_data(png_structp *png_ptr, png_infop *info_ptr,
 
 info_callback(png_structp png_ptr, png_infop info)
 {
-   /* Do any setup here, including setting any of the transformations
-    * mentioned in the Reading PNG files section.  For now, you _must_
-    * call either png_start_read_image() or png_read_update_info()
-    * after all the transformations are set (even if you don't set
-    * any).  You may start getting rows before png_process_data()
-    * returns, so this is your last chance to prepare for that.
-    */
+/* do any setup here, including setting any of the transformations
+ * mentioned in the Reading PNG files section.  For now, you _must_
+ * call either png_start_read_image() or png_read_update_info()
+ * after all the transformations are set (even if you don't set
+ * any).  You may start getting rows before png_process_data()
+ * returns, so this is your last chance to prepare for that.
+ */
 }
 
 row_callback(png_structp png_ptr, png_bytep new_row,
    png_uint_32 row_num, int pass)
 {
-   /*
-    * This function is called for every row in the image.  If the
-    * image is interlaced, and you turned on the interlace handler,
-    * this function will be called for every row in every pass.
-    *
-    * In this function you will receive a pointer to new row data from
-    * libpng called new_row that is to replace a corresponding row (of
-    * the same data format) in a buffer allocated by your application.
-    *
-    * The new row data pointer "new_row" may be NULL, indicating there is
-    * no new data to be replaced (in cases of interlace loading).
-    *
-    * If new_row is not NULL then you need to call
-    * png_progressive_combine_row() to replace the corresponding row as
-    * shown below:
-    */
-
+/*
+ * This function is called for every row in the image.  If the
+ * image is interlaced, and you turned on the interlace handler,
+ * this function will be called for every row in every pass.
+ *
+ * In this function you will receive a pointer to new row data from
+ * libpng called new_row that is to replace a corresponding row (of
+ * the same data format) in a buffer allocated by your application.
+ *
+ * The new row data pointer new_row may be NULL, indicating there is
+ * no new data to be replaced (in cases of interlace loading).
+ *
+ * If new_row is not NULL then you need to call
+ * png_progressive_combine_row() to replace the corresponding row as
+ * shown below:
+ */
    /* Check if row_num is in bounds. */
    if ((row_num >= 0) && (row_num < height))
    {
@@ -523,44 +518,44 @@ row_callback(png_structp png_ptr, png_bytep new_row,
      if ((old_row != NULL) && (new_row != NULL))
      png_progressive_combine_row(png_ptr, old_row, new_row);
    }
-   /*
-    * The rows and passes are called in order, so you don't really
-    * need the row_num and pass, but I'm supplying them because it
-    * may make your life easier.
-    *
-    * For the non-NULL rows of interlaced images, you must call
-    * png_progressive_combine_row() passing in the new row and the
-    * old row, as demonstrated above.  You can call this function for
-    * NULL rows (it will just return) and for non-interlaced images
-    * (it just does the png_memcpy for you) if it will make the code
-    * easier.  Thus, you can just do this for all cases:
-    */
+/*
+ * The rows and passes are called in order, so you don't really
+ * need the row_num and pass, but I'm supplying them because it
+ * may make your life easier.
+ *
+ * For the non-NULL rows of interlaced images, you must call
+ * png_progressive_combine_row() passing in the new row and the
+ * old row, as demonstrated above.  You can call this function for
+ * NULL rows (it will just return) and for non-interlaced images
+ * (it just does the png_memcpy for you) if it will make the code
+ * easier.  Thus, you can just do this for all cases:
+ */
 
    png_progressive_combine_row(png_ptr, old_row, new_row);
 
-   /* where old_row is what was displayed for previous rows.  Note
-    * that the first pass (pass == 0 really) will completely cover
-    * the old row, so the rows do not have to be initialized.  After
-    * the first pass (and only for interlaced images), you will have
-    * to pass the current row as new_row, and the function will combine
-    * the old row and the new row.
-    */
+/* where old_row is what was displayed for previous rows.  Note
+ * that the first pass (pass == 0 really) will completely cover
+ * the old row, so the rows do not have to be initialized.  After
+ * the first pass (and only for interlaced images), you will have
+ * to pass the current row as new_row, and the function will combine
+ * the old row and the new row.
+ */
 }
 
 end_callback(png_structp png_ptr, png_infop info)
 {
-   /* This function is called when the whole image has been read,
-    * including any chunks after the image (up to and including
-    * the IEND).  You will usually have the same info chunk as you
-    * had in the header, although some data may have been added
-    * to the comments and time fields.
-    *
-    * Most people won't do much here, perhaps setting a flag that
-    * marks the image as finished.
-    */
+/* this function is called when the whole image has been read,
+ * including any chunks after the image (up to and including
+ * the IEND).  You will usually have the same info chunk as you
+ * had in the header, although some data may have been added
+ * to the comments and time fields.
+ *
+ * Most people won't do much here, perhaps setting a flag that
+ * marks the image as finished.
+ */
 }
 
-/* Write a png file */
+/* write a png file */
 void write_png(char *file_name /* , ... other image information ... */)
 {
    FILE *fp;
@@ -568,7 +563,7 @@ void write_png(char *file_name /* , ... other image information ... */)
    png_infop info_ptr;
    png_colorp palette;
 
-   /* Open the file */
+   /* open the file */
    fp = fopen(file_name, "wb");
    if (fp == NULL)
       return (ERROR);
@@ -602,34 +597,30 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    if (setjmp(png_jmpbuf(png_ptr)))
    {
-      /* If we get here, we had a problem writing the file */
+      /* If we get here, we had a problem reading the file */
       fclose(fp);
       png_destroy_write_struct(&png_ptr, &info_ptr);
       return (ERROR);
    }
 
    /* One of the following I/O initialization functions is REQUIRED */
-
 #ifdef streams /* I/O initialization method 1 */
-   /* Set up the output control if you are using standard C streams */
+   /* set up the output control if you are using standard C streams */
    png_init_io(png_ptr, fp);
-
 #else no_streams /* I/O initialization method 2 */
    /* If you are using replacement write functions, instead of calling
-    * png_init_io() here you would call
-    */
+    * png_init_io() here you would call */
    png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
       user_IO_flush_function);
    /* where user_io_ptr is a structure you want available to the callbacks */
-#endif no_streams /* Only use one initialization method */
+#endif no_streams /* only use one initialization method */
 
 #ifdef hilevel
    /* This is the easy way.  Use it if you already have all the
-    * image info living in the structure.  You could "|" many
+    * image info living info in the structure.  You could "|" many
     * PNG_TRANSFORM flags into the png_transforms integer here.
     */
    png_write_png(png_ptr, info_ptr, png_transforms, png_voidp_NULL);
-
 #else
    /* This is the hard way */
 
@@ -644,27 +635,25 @@ void write_png(char *file_name /* , ... other image information ... */)
    png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
       PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
 
-   /* Set the palette if there is one.  REQUIRED for indexed-color images */
+   /* set the palette if there is one.  REQUIRED for indexed-color images */
    palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
              * png_sizeof(png_color));
-   /* ... Set palette colors ... */
+   /* ... set palette colors ... */
    png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
    /* You must not free palette here, because png_set_PLTE only makes a link to
-    * the palette that you malloced.  Wait until you are about to destroy
-    * the png structure.
-    */
+      the palette that you malloced.  Wait until you are about to destroy
+      the png structure. */
 
-   /* Optional significant bit (sBIT) chunk */
-   png_color_8 sig_bit;
-   /* If we are dealing with a grayscale image then */
+   /* optional significant bit chunk */
+   /* if we are dealing with a grayscale image then */
    sig_bit.gray = true_bit_depth;
-   /* Otherwise, if we are dealing with a color image then */
+   /* otherwise, if we are dealing with a color image then */
    sig_bit.red = true_red_bit_depth;
    sig_bit.green = true_green_bit_depth;
    sig_bit.blue = true_blue_bit_depth;
-   /* If the image has an alpha channel then */
+   /* if the image has an alpha channel then */
    sig_bit.alpha = true_alpha_bit_depth;
-   png_set_sBIT(png_ptr, info_ptr, &sig_bit);
+   png_set_sBIT(png_ptr, info_ptr, sig_bit);
 
 
    /* Optional gamma chunk is strongly suggested if you have any guess
@@ -689,12 +678,9 @@ void write_png(char *file_name /* , ... other image information ... */)
 #endif
    png_set_text(png_ptr, info_ptr, text_ptr, 3);
 
-   /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
-
-   /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored
-    * on read and, if your application chooses to write them, they must
-    * be written in accordance with the sRGB profile
-    */
+   /* other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs, */
+   /* note that if sRGB is present the gAMA and cHRM chunks must be ignored
+    * on read and must be written in accordance with the sRGB profile */
 
    /* Write the file header information.  REQUIRED */
    png_write_info(png_ptr, info_ptr);
@@ -706,7 +692,7 @@ void write_png(char *file_name /* , ... other image information ... */)
     *   write_my_chunk();
     *   png_write_info(png_ptr, info_ptr);
     *
-    * However, given the level of known- and unknown-chunk support in 1.2.0
+    * However, given the level of known- and unknown-chunk support in 1.1.0
     * and up, this should no longer be necessary.
     */
 
@@ -716,11 +702,11 @@ void write_png(char *file_name /* , ... other image information ... */)
     * at the end.
     */
 
-   /* Set up the transformations you want.  Note that these are
+   /* set up the transformations you want.  Note that these are
     * all optional.  Only call them if you want them.
     */
 
-   /* Invert monochrome pixels */
+   /* invert monochrome pixels */
    png_set_invert_mono(png_ptr);
 
    /* Shift the pixels up to a legal bit depth and fill in
@@ -728,10 +714,10 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    png_set_shift(png_ptr, &sig_bit);
 
-   /* Pack pixels into bytes */
+   /* pack pixels into bytes */
    png_set_packing(png_ptr);
 
-   /* Swap location of alpha bytes from ARGB to RGBA */
+   /* swap location of alpha bytes from ARGB to RGBA */
    png_set_swap_alpha(png_ptr);
 
    /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
@@ -739,16 +725,16 @@ void write_png(char *file_name /* , ... other image information ... */)
     */
    png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
 
-   /* Flip BGR pixels to RGB */
+   /* flip BGR pixels to RGB */
    png_set_bgr(png_ptr);
 
-   /* Swap bytes of 16-bit files to most significant byte first */
+   /* swap bytes of 16-bit files to most significant byte first */
    png_set_swap(png_ptr);
 
-   /* Swap bits of 1, 2, 4 bit packed pixel formats */
+   /* swap bits of 1, 2, 4 bit packed pixel formats */
    png_set_packswap(png_ptr);
 
-   /* Turn on interlace handling if you are not using png_write_image() */
+   /* turn on interlace handling if you are not using png_write_image() */
    if (interlacing)
       number_passes = png_set_interlace_handling(png_ptr);
    else
@@ -769,14 +755,12 @@ void write_png(char *file_name /* , ... other image information ... */)
      row_pointers[k] = image + k*width*bytes_per_pixel;
 
    /* One of the following output methods is REQUIRED */
-
-#ifdef entire /* Write out the entire image data in one call */
+#ifdef entire /* write out the entire image data in one call */
    png_write_image(png_ptr, row_pointers);
 
-   /* The other way to write the image - deal with interlacing */
-
-#else no_entire /* Write out the image data by one or more scanlines */
+   /* the other way to write the image - deal with interlacing */
 
+#else no_entire /* write out the image data by one or more scanlines */
    /* The number of passes is either 1 for non-interlaced images,
     * or 7 for interlaced images.
     */
@@ -787,12 +771,14 @@ void write_png(char *file_name /* , ... other image information ... */)
 
       /* If you are only writing one row at a time, this works */
       for (y = 0; y < height; y++)
+      {
          png_write_rows(png_ptr, &row_pointers[y], 1);
+      }
    }
-#endif no_entire /* Use only one output method */
+#endif no_entire /* use only one output method */
 
    /* You can write optional chunks like tEXt, zTXt, and tIME at the end
-    * as well.  Shouldn't be necessary in 1.2.0 and up as all the public
+    * as well.  Shouldn't be necessary in 1.1.0 and up as all the public
     * chunks are supported and you can use png_set_unknown_chunks() to
     * register unknown chunks into the info structure to be written out.
     */
@@ -802,33 +788,26 @@ void write_png(char *file_name /* , ... other image information ... */)
 #endif hilevel
 
    /* If you png_malloced a palette, free it here (don't free info_ptr->palette,
-    * as recommended in versions 1.0.5m and earlier of this example; if
-    * libpng mallocs info_ptr->palette, libpng will free it).  If you
-    * allocated it with malloc() instead of png_malloc(), use free() instead
-    * of png_free().
-    */
+      as recommended in versions 1.0.5m and earlier of this example; if
+      libpng mallocs info_ptr->palette, libpng will free it).  If you
+      allocated it with malloc() instead of png_malloc(), use free() instead
+      of png_free(). */
    png_free(png_ptr, palette);
    palette = NULL;
 
    /* Similarly, if you png_malloced any data that you passed in with
-    * png_set_something(), such as a hist or trans array, free it here,
-    * when you can be sure that libpng is through with it.
-    */
+      png_set_something(), such as a hist or trans array, free it here,
+      when you can be sure that libpng is through with it. */
    png_free(png_ptr, trans);
    trans = NULL;
-   /* Whenever you use png_free() it is a good idea to set the pointer to
-    * NULL in case your application inadvertently tries to png_free() it
-    * again.  When png_free() sees a NULL it returns without action, thus
-    * avoiding the double-free security problem.
-    */
 
-   /* Clean up after the write, and free any memory allocated */
+   /* clean up after the write, and free any memory allocated */
    png_destroy_write_struct(&png_ptr, &info_ptr);
 
-   /* Close the file */
+   /* close the file */
    fclose(fp);
 
-   /* That's it */
+   /* that's it */
    return (OK);
 }
 

install-sh

@@ -1,7 +1,7 @@
 #!/bin/sh
 # install - install a program, script, or datafile
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2006-12-25.00
 
 # This originates from X11R5 (mit/util/scripts/install.sh), which was
 # later released in X11R6 (xc/config/util/install.sh) with the
@@ -515,6 +515,5 @@ done
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
+# time-stamp-end: "$"
 # End:

libpng-1.0.41.txt

@@ -1,19 +1,17 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.41beta05 - October 11, 2009
+ libpng version 1.0.41 - October 31, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
-
- This document is released under the libpng license.
- For conditions of distribution and use, see the disclaimer
- and license in png.h
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ For conditions of distribution and use, see copyright
+ notice in png.h.
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.41beta05 - October 11, 2009
+ libpng versions 0.97, January 1998, through 1.0.41 - October 31, 2008
  Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
 
  libpng 1.0 beta 6  version 0.96 May 28, 1997
  Updated and distributed by Andreas Dilger
@@ -143,10 +141,9 @@ so if it doesn't work, you don't have much to undo.  Of course, you
 will also want to insure that you are, in fact, dealing with a PNG
 file.  Libpng provides a simple check to see if a file is a PNG file.
 To use it, pass in the first 1 to 8 bytes of the file to the function
-png_sig_cmp(), and it will return 0 (false) if the bytes match the
-corresponding bytes of the PNG signature, or nonzero (true) otherwise.
-Of course, the more bytes you pass in, the greater the accuracy of the
-prediction.
+png_sig_cmp(), and it will return 0 if the bytes match the corresponding
+bytes of the PNG signature, or nonzero otherwise.  Of course, the more bytes
+you pass in, the greater the accuracy of the prediction.
 
 If you are intending to keep the file pointer open for use in libpng,
 you must ensure you don't read more than 8 bytes from the beginning
@@ -388,27 +385,6 @@ callback function:
          (int)sizeof(unused_chunks)/5);
     #endif
 
-User 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);
 
 The high-level read interface
 
@@ -474,8 +450,6 @@ row_pointers prior to calling png_read_png() with
          "Image is too wide to process in memory");
    row_pointers = png_malloc(png_ptr,
       height*png_sizeof(png_bytep));
-   for (int i=0; i<height, i++)
-      row_pointers[i]=NULL;  /* security precaution */
    for (int i=0; i<height, i++)
       row_pointers[i]=png_malloc(png_ptr,
          width*pixel_size);
@@ -545,33 +519,10 @@ in until png_read_end() has read the chunk data following the image.
                      for PNG 1.0)
     interlace_type - (PNG_INTERLACE_NONE or
                      PNG_INTERLACE_ADAM7)
-
-    Any or all of interlace_type, compression_type, or
+    Any or all of interlace_type, compression_type, of
     filter_method can be NULL if you are
     not interested in their values.
 
-    Note that png_get_IHDR() returns 32-bit data into
-    the application's width and height variables.
-    This is an unsafe situation if these are 16-bit
-    variables.  In such situations, the
-    png_get_image_width() and png_get_image_height()
-    functions described below are safer.
-
-    width            = png_get_image_width(png_ptr,
-                         info_ptr);
-    height           = png_get_image_height(png_ptr,
-                         info_ptr);
-    bit_depth        = png_get_bit_depth(png_ptr,
-                         info_ptr);
-    color_type       = png_get_color_type(png_ptr,
-                         info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
-                         info_ptr);
-    compression_type = png_get_compression_type(png_ptr,
-                         info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
-                         info_ptr);
-
     channels = png_get_channels(png_ptr, info_ptr);
     channels       - number of channels of info for the
                      color type (valid values are 1 (GRAY,
@@ -591,6 +542,23 @@ in until png_read_end() has read the chunk data following the image.
                      be in signature[4] through signature[7]
                      (see png_set_sig_bytes())).
 
+
+    width            = png_get_image_width(png_ptr,
+                         info_ptr);
+    height           = png_get_image_height(png_ptr,
+                         info_ptr);
+    bit_depth        = png_get_bit_depth(png_ptr,
+                         info_ptr);
+    color_type       = png_get_color_type(png_ptr,
+                         info_ptr);
+    filter_method    = png_get_filter_type(png_ptr,
+                         info_ptr);
+    compression_type = png_get_compression_type(png_ptr,
+                         info_ptr);
+    interlace_type   = png_get_interlace_type(png_ptr,
+                         info_ptr);
+
+
 These are also important, but their validity depends on whether the chunk
 has been read.  The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
 png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
@@ -636,8 +604,8 @@ into the info_ptr is returned for any complex types.
 
     png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
                      &trans_values);
-    trans          - array of transparent
-                     entries for palette (PNG_INFO_tRNS)
+    trans          - array of transparent entries for
+                     palette (PNG_INFO_tRNS)
     trans_values   - graylevel or color sample values of
                      the single transparent color for
                      non-paletted images (PNG_INFO_tRNS)
@@ -826,7 +794,7 @@ 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() or png_set_add_alpha()
+in RGB RGB RGB format unless png_set_filler()
 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
@@ -834,7 +802,7 @@ 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(), png_set_add_alpha(), or png_set_strip_16().
+png_set_filler() 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
@@ -846,7 +814,7 @@ 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_expand_gray_1_2_4_to_8(png_ptr);
+        bit_depth < 8) png_set_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);
@@ -856,8 +824,6 @@ 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.
 
 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.
@@ -922,16 +888,7 @@ 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:
 
@@ -1709,7 +1666,7 @@ types.
        PNG_FILTER_NONE  | PNG_FILTER_VALUE_NONE |
        PNG_FILTER_SUB   | PNG_FILTER_VALUE_SUB  |
        PNG_FILTER_UP    | PNG_FILTER_VALUE_UP   |
-       PNG_FILTER_AVG   | PNG_FILTER_VALUE_AVG  |
+       PNG_FILTER_AVE   | PNG_FILTER_VALUE_AVE  |
        PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
        PNG_ALL_FILTERS);
 
@@ -1799,14 +1756,10 @@ Some of the more important parts of the png_info are:
                      PNG_INTRAPIXEL_DIFFERENCING)
 
 If you call png_set_IHDR(), the call must appear before any of the
-other png_set_*() functions, because they might require access to some of
+other png_set_*() functions, which might require access to some of
 the IHDR settings.  The remaining png_set_*() functions can be called
 in any order.
 
-If you wish, you can reset the compression_type, interlace_type, or
-filter_method later by calling png_set_IHDR() again; if you do this, the
-width, height, bit_depth, and color_type must be the same in each call.
-
     png_set_PLTE(png_ptr, info_ptr, palette,
        num_palette);
     palette        - the palette for the file
@@ -1866,11 +1819,10 @@ width, height, bit_depth, and color_type must be the same in each call.
 
     png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
        trans_values);
-    trans          - array of transparent
-                     entries for palette (PNG_INFO_tRNS)
-    trans_values   - graylevel or color sample values
-                     (in order red, green, blue) of the
-                     single transparent color for
+    trans          - array of transparent entries for
+                     palette (PNG_INFO_tRNS)
+    trans_values   - graylevel or color sample values of
+                     the single transparent color for
                      non-paletted images (PNG_INFO_tRNS)
     num_trans      - number of transparent entries
                      (PNG_INFO_tRNS)
@@ -2079,12 +2031,7 @@ transformations are permitted, enabled by the following masks.
     PNG_TRANSFORM_INVERT_ALPHA  Change alpha from opacity
                                 to transparency
     PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
-    PNG_TRANSFORM_STRIP_FILLER        Strip out filler
-                                      bytes (deprecated).
-    PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
-                                      filler bytes
-    PNG_TRANSFORM_STRIP_FILLER_AFTER  Strip out trailing
-                                      filler bytes
+    PNG_TRANSFORM_STRIP_FILLER  Strip out filler bytes.
 
 If you have valid image data in the info structure (you can use
 png_set_rows() to put image data in the info structure), simply do this:
@@ -2491,15 +2438,9 @@ The replacement I/O functions must have prototypes as follows:
         png_bytep data, png_size_t length);
     void user_flush_data(png_structp png_ptr);
 
-The user_read_data() function is responsible for detecting and
-handling end-of-data errors.
-
 Supplying NULL for the read, write, or flush functions sets them back
-to using the default C stream functions, which expect the io_ptr to
-point to a standard *FILE structure.  It is probably a mistake
-to use NULL for one of write_data_fn and output_flush_fn but not both
-of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
-It is an error to read from a write stream, and vice versa.
+to using the default C stream functions.  It is an error to read from
+a write stream, and vice versa.
 
 Error handling in libpng is done through png_error() and png_warning().
 Errors handled through png_error() are fatal, meaning that png_error()
@@ -2604,12 +2545,11 @@ you may also have to change the memory allocators (png_malloc, etc.).
 
 Configuring for compiler xxx:
 
-All includes for libpng are in pngconf.h.  If you need to add, change
-or delete an include, this is the place to do it.
-The includes that are not needed outside libpng are protected by the
-PNG_INTERNAL definition, which is only defined for those routines inside
-libpng itself.  The files in libpng proper only include png.h, which
-includes pngconf.h.
+All includes for libpng are in pngconf.h.  If you need to add/change/delete
+an include, this is the place to do it.  The includes that are not
+needed outside libpng are protected by the PNG_INTERNAL definition,
+which is only defined for those routines inside libpng itself.  The
+files in libpng proper only include png.h, which includes pngconf.h.
 
 Configuring zlib:
 
@@ -2678,7 +2618,7 @@ currently does not allocate the filter buffers until png_write_row()
 is called for the first time.)
 
     filters = PNG_FILTER_NONE | PNG_FILTER_SUB
-              PNG_FILTER_UP | PNG_FILTER_AVG |
+              PNG_FILTER_UP | PNG_FILTER_AVE |
               PNG_FILTER_PAETH | PNG_ALL_FILTERS;
 
     png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
@@ -2800,7 +2740,7 @@ 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.  MNG support
+VII.  MNG support
 
 The MNG specification (available at http://www.libpng.org/pub/mng) allows
 certain extensions to PNG for PNG images that are embedded in MNG datastreams.
@@ -2874,212 +2814,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-VIII.  Changes to Libpng from version 1.0.x to 1.2.x
+VIII. Y2K Compliance in libpng
 
-Support for user memory management was enabled by default.  To
-accomplish this, the functions png_create_read_struct_2(),
-png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
-png_malloc_default(), and png_free_default() were added.
-
-Support for certain MNG features was enabled.
-
-Support for numbered error messages was added.  However, we never got
-around to actually numbering the error messages.  The function
-png_set_strip_error_numbers() was added (Note: the prototype for this
-function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
-builds of libpng-1.2.15.  It was restored in libpng-1.2.36).
-
-The png_malloc_warn() function was added at libpng-1.2.3.  This issues
-a png_warning and returns NULL instead of aborting when it fails to
-acquire the requested memory allocation.
-
-Support for setting user limits on image width and height was enabled
-by default.  The functions png_set_user_limits(), png_get_user_width_max(),
-and png_get_user_height_max() were added at libpng-1.2.6.
-
-The png_set_add_alpha() function was added at libpng-1.2.7.
-
-The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
-Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
-tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
-deprecated.
-
-A number of macro definitions in support of runtime selection of
-assembler code features (especially Intel MMX code support) were
-added at libpng-1.2.0:
-
-    PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
-    PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
-    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_ASM_FLAGS_INITIALIZED
-    PNG_MMX_READ_FLAGS
-    PNG_MMX_FLAGS
-    PNG_MMX_WRITE_FLAGS
-    PNG_MMX_FLAGS
-
-We added the following functions in support of runtime
-selection of assembler code features:
-
-    png_get_mmx_flagmask()
-    png_set_mmx_thresholds()
-    png_get_asm_flags()
-    png_get_mmx_bitdepth_threshold()
-    png_get_mmx_rowbytes_threshold()
-    png_set_asm_flags()
-
-We replaced all of these functions with simple stubs in libpng-1.2.20,
-when the Intel assembler code was removed due to a licensing issue.
-
-IX.  (Omitted)
-X. Detecting libpng
-
-The png_get_io_ptr() function has been present since libpng-0.88, has never
-changed, and is unaffected by conditional compilation macros.  It is the
-best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88.  In an autoconf "configure.in" you could use
-
-    AC_CHECK_LIB(png, png_get_io_ptr, ...
-
-XI. Source code repository
-
-Since about February 2009, version 1.2.34, libpng has been under "git" source
-control.  The git repository was built from old libpng-x.y.z.tar.gz files
-going back to version 0.70.  You can access the git repository (read only)
-at
-
-    git://libpng.git.sourceforge.net/gitroot/libpng
-
-or you can browse it via "gitweb" at
-
-    http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
-
-Patches can be sent to glennrp at users.sourceforge.net or to
-png-mng-implement at lists.sourceforge.net or you can upload them to
-the libpng bug tracker at
-
-    http://libpng.sourceforge.net
-
-XII. Coding style
-
-Our coding style is similar to the "Allman" style, with curly
-braces on separate lines:
-
-    if (condition)
-    {
-       action;
-    }
-
-    else if (another condition)
-    {
-       another action;
-    }
-
-The braces can be omitted from simple one-line actions:
-
-    if (condition)
-       return (0);
-
-We use 3-space indentation, except for continued statements which
-are usually indented the same as the first line of the statement
-plus four more spaces.
-
-For macro definitions we use 2-space indentation, always leaving the "#"
-in the first column.
-
-    #ifndef PNG_NO_FEATURE
-    #  ifndef PNG_FEATURE_SUPPORTED
-    #    define PNG_FEATURE_SUPPORTED
-    #  endif
-    #endif
-
-Comments appear with the leading "/*" at the same indentation as
-the statement that follows the comment:
-
-    /* Single-line comment */
-    statement;
-
-    /* Multiple-line
-     * comment
-     */
-    statement;
-
-Very short comments can be placed at the end of the statement
-to which they pertain:
-
-    statement;    /* comment */
-
-We don't use C++ style ("//") comments. We have, however,
-used them in the past in some now-abandoned MMX assembler
-code.
-
-Functions and their curly braces are not indented, and
-exported functions are marked with PNGAPI:
-
- /* This is a public function that is visible to
-  * application programers. It does thus-and-so.
-  */
- void PNGAPI
- png_exported_function(png_ptr, png_info, foo)
- {
-    body;
- }
-
-The prototypes for all exported functions appear in png.h,
-above the comment that says
-
-    /* Maintainer: Put new public prototypes here ... */
-
-We mark all non-exported functions with "/* PRIVATE */"":
-
- void /* PRIVATE */
- png_non_exported_function(png_ptr, png_info, foo)
- {
-    body;
- }
-
-The prototypes for non-exported functions (except for those in
-pngtest) appear in
-the PNG_INTERNAL section of png.h
-above the comment that says
-
-  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
-
-The names of all exported functions and variables begin
-with  "png_", and all publicly visible C preprocessor
-macros begin with "PNG_".
-
-We put a space after each comma and after each semicolon
-in "for" statments, and we put spaces before and after each
-C binary operator and after "for" or "while".  We don't
-put a space between a typecast and the expression being
-cast, nor do we put one between a function name and the
-left parenthesis that follows it:
-
-    for (i = 2; i > 0; --i)
-       y[i] = a(x) + (int)b;
-
-We prefer #ifdef and #ifndef to #if defined() and if !defined()
-when there is only one macro being tested.
-
-We do not use the TAB character for indentation in the C sources.
-
-Other rules can be inferred by inspecting the libpng
-source.
-
-XIII. Y2K Compliance in libpng
-
-October 11, 2009
+October 31, 2008
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.41beta05 are Y2K compliant.  It is my belief that earlier
+upward through 1.0.41 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 "October 11, 2009"
+.TH LIBPNG 3 "October 31, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta05
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.41
 .SH SYNOPSIS
 \fI\fB
 
@@ -821,20 +821,18 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.41beta05 - October 11, 2009
+ libpng version 1.0.41 - October 31, 2008
  Updated and distributed by Glenn Randers-Pehrson
  <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
-
- This document is released under the libpng license.
- For conditions of distribution and use, see the disclaimer
- and license in png.h
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
+ For conditions of distribution and use, see copyright
+ notice in png.h.
 
  Based on:
 
- libpng versions 0.97, January 1998, through 1.2.41beta05 - October 11, 2009
+ libpng versions 0.97, January 1998, through 1.0.41 - October 31, 2008
  Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ Copyright (c) 1998-2008 Glenn Randers-Pehrson
 
  libpng 1.0 beta 6  version 0.96 May 28, 1997
  Updated and distributed by Andreas Dilger
@@ -964,10 +962,9 @@ so if it doesn't work, you don't have much to undo.  Of course, you
 will also want to insure that you are, in fact, dealing with a PNG
 file.  Libpng provides a simple check to see if a file is a PNG file.
 To use it, pass in the first 1 to 8 bytes of the file to the function
-png_sig_cmp(), and it will return 0 (false) if the bytes match the
-corresponding bytes of the PNG signature, or nonzero (true) otherwise.
-Of course, the more bytes you pass in, the greater the accuracy of the
-prediction.
+png_sig_cmp(), and it will return 0 if the bytes match the corresponding
+bytes of the PNG signature, or nonzero otherwise.  Of course, the more bytes
+you pass in, the greater the accuracy of the prediction.
 
 If you are intending to keep the file pointer open for use in libpng,
 you must ensure you don't read more than 8 bytes from the beginning
@@ -1209,27 +1206,6 @@ callback function:
          (int)sizeof(unused_chunks)/5);
     #endif
 
-.SS User 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 The high-level read interface
 
@@ -1295,8 +1271,6 @@ row_pointers prior to calling png_read_png() with
          "Image is too wide to process in memory");
    row_pointers = png_malloc(png_ptr,
       height*png_sizeof(png_bytep));
-   for (int i=0; i<height, i++)
-      row_pointers[i]=NULL;  /* security precaution */
    for (int i=0; i<height, i++)
       row_pointers[i]=png_malloc(png_ptr,
          width*pixel_size);
@@ -1366,33 +1340,10 @@ in until png_read_end() has read the chunk data following the image.
                      for PNG 1.0)
     interlace_type - (PNG_INTERLACE_NONE or
                      PNG_INTERLACE_ADAM7)
-
-    Any or all of interlace_type, compression_type, or
+    Any or all of interlace_type, compression_type, of
     filter_method can be NULL if you are
     not interested in their values.
 
-    Note that png_get_IHDR() returns 32-bit data into
-    the application's width and height variables.
-    This is an unsafe situation if these are 16-bit
-    variables.  In such situations, the
-    png_get_image_width() and png_get_image_height()
-    functions described below are safer.
-
-    width            = png_get_image_width(png_ptr,
-                         info_ptr);
-    height           = png_get_image_height(png_ptr,
-                         info_ptr);
-    bit_depth        = png_get_bit_depth(png_ptr,
-                         info_ptr);
-    color_type       = png_get_color_type(png_ptr,
-                         info_ptr);
-    filter_method    = png_get_filter_type(png_ptr,
-                         info_ptr);
-    compression_type = png_get_compression_type(png_ptr,
-                         info_ptr);
-    interlace_type   = png_get_interlace_type(png_ptr,
-                         info_ptr);
-
     channels = png_get_channels(png_ptr, info_ptr);
     channels       - number of channels of info for the
                      color type (valid values are 1 (GRAY,
@@ -1412,6 +1363,23 @@ in until png_read_end() has read the chunk data following the image.
                      be in signature[4] through signature[7]
                      (see png_set_sig_bytes())).
 
+
+    width            = png_get_image_width(png_ptr,
+                         info_ptr);
+    height           = png_get_image_height(png_ptr,
+                         info_ptr);
+    bit_depth        = png_get_bit_depth(png_ptr,
+                         info_ptr);
+    color_type       = png_get_color_type(png_ptr,
+                         info_ptr);
+    filter_method    = png_get_filter_type(png_ptr,
+                         info_ptr);
+    compression_type = png_get_compression_type(png_ptr,
+                         info_ptr);
+    interlace_type   = png_get_interlace_type(png_ptr,
+                         info_ptr);
+
+
 These are also important, but their validity depends on whether the chunk
 has been read.  The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
 png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
@@ -1457,8 +1425,8 @@ into the info_ptr is returned for any complex types.
 
     png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
                      &trans_values);
-    trans          - array of transparent
-                     entries for palette (PNG_INFO_tRNS)
+    trans          - array of transparent entries for
+                     palette (PNG_INFO_tRNS)
     trans_values   - graylevel or color sample values of
                      the single transparent color for
                      non-paletted images (PNG_INFO_tRNS)
@@ -1647,7 +1615,7 @@ 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() or png_set_add_alpha()
+in RGB RGB RGB format unless png_set_filler()
 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
@@ -1655,7 +1623,7 @@ 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(), png_set_add_alpha(), or png_set_strip_16().
+png_set_filler() 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
@@ -1667,7 +1635,7 @@ 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_expand_gray_1_2_4_to_8(png_ptr);
+        bit_depth < 8) png_set_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);
@@ -1677,8 +1645,6 @@ 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.
 
 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.
@@ -1743,16 +1709,7 @@ 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:
 
@@ -2530,7 +2487,7 @@ types.
        PNG_FILTER_NONE  | PNG_FILTER_VALUE_NONE |
        PNG_FILTER_SUB   | PNG_FILTER_VALUE_SUB  |
        PNG_FILTER_UP    | PNG_FILTER_VALUE_UP   |
-       PNG_FILTER_AVG   | PNG_FILTER_VALUE_AVG  |
+       PNG_FILTER_AVE   | PNG_FILTER_VALUE_AVE  |
        PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
        PNG_ALL_FILTERS);
 
@@ -2620,14 +2577,10 @@ Some of the more important parts of the png_info are:
                      PNG_INTRAPIXEL_DIFFERENCING)
 
 If you call png_set_IHDR(), the call must appear before any of the
-other png_set_*() functions, because they might require access to some of
+other png_set_*() functions, which might require access to some of
 the IHDR settings.  The remaining png_set_*() functions can be called
 in any order.
 
-If you wish, you can reset the compression_type, interlace_type, or
-filter_method later by calling png_set_IHDR() again; if you do this, the
-width, height, bit_depth, and color_type must be the same in each call.
-
     png_set_PLTE(png_ptr, info_ptr, palette,
        num_palette);
     palette        - the palette for the file
@@ -2687,11 +2640,10 @@ width, height, bit_depth, and color_type must be the same in each call.
 
     png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
        trans_values);
-    trans          - array of transparent
-                     entries for palette (PNG_INFO_tRNS)
-    trans_values   - graylevel or color sample values
-                     (in order red, green, blue) of the
-                     single transparent color for
+    trans          - array of transparent entries for
+                     palette (PNG_INFO_tRNS)
+    trans_values   - graylevel or color sample values of
+                     the single transparent color for
                      non-paletted images (PNG_INFO_tRNS)
     num_trans      - number of transparent entries
                      (PNG_INFO_tRNS)
@@ -2900,12 +2852,7 @@ transformations are permitted, enabled by the following masks.
     PNG_TRANSFORM_INVERT_ALPHA  Change alpha from opacity
                                 to transparency
     PNG_TRANSFORM_SWAP_ENDIAN   Byte-swap 16-bit samples
-    PNG_TRANSFORM_STRIP_FILLER        Strip out filler
-                                      bytes (deprecated).
-    PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
-                                      filler bytes
-    PNG_TRANSFORM_STRIP_FILLER_AFTER  Strip out trailing
-                                      filler bytes
+    PNG_TRANSFORM_STRIP_FILLER  Strip out filler bytes.
 
 If you have valid image data in the info structure (you can use
 png_set_rows() to put image data in the info structure), simply do this:
@@ -3312,15 +3259,9 @@ The replacement I/O functions must have prototypes as follows:
         png_bytep data, png_size_t length);
     void user_flush_data(png_structp png_ptr);
 
-The user_read_data() function is responsible for detecting and
-handling end-of-data errors.
-
 Supplying NULL for the read, write, or flush functions sets them back
-to using the default C stream functions, which expect the io_ptr to
-point to a standard *FILE structure.  It is probably a mistake
-to use NULL for one of write_data_fn and output_flush_fn but not both
-of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
-It is an error to read from a write stream, and vice versa.
+to using the default C stream functions.  It is an error to read from
+a write stream, and vice versa.
 
 Error handling in libpng is done through png_error() and png_warning().
 Errors handled through png_error() are fatal, meaning that png_error()
@@ -3425,12 +3366,11 @@ you may also have to change the memory allocators (png_malloc, etc.).
 
 .SS Configuring for compiler xxx:
 
-All includes for libpng are in pngconf.h.  If you need to add, change
-or delete an include, this is the place to do it.
-The includes that are not needed outside libpng are protected by the
-PNG_INTERNAL definition, which is only defined for those routines inside
-libpng itself.  The files in libpng proper only include png.h, which
-includes pngconf.h.
+All includes for libpng are in pngconf.h.  If you need to add/change/delete
+an include, this is the place to do it.  The includes that are not
+needed outside libpng are protected by the PNG_INTERNAL definition,
+which is only defined for those routines inside libpng itself.  The
+files in libpng proper only include png.h, which includes pngconf.h.
 
 .SS Configuring zlib:
 
@@ -3499,7 +3439,7 @@ currently does not allocate the filter buffers until png_write_row()
 is called for the first time.)
 
     filters = PNG_FILTER_NONE | PNG_FILTER_SUB
-              PNG_FILTER_UP | PNG_FILTER_AVG |
+              PNG_FILTER_UP | PNG_FILTER_AVE |
               PNG_FILTER_PAETH | PNG_ALL_FILTERS;
 
     png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
@@ -3621,7 +3561,7 @@ 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.  MNG support
+.SH VII.  MNG support
 
 The MNG specification (available at http://www.libpng.org/pub/mng) allows
 certain extensions to PNG for PNG images that are embedded in MNG datastreams.
@@ -3695,212 +3635,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-.SH VIII.  Changes to Libpng from version 1.0.x to 1.2.x
+.SH VIII. Y2K Compliance in libpng
 
-Support for user memory management was enabled by default.  To
-accomplish this, the functions png_create_read_struct_2(),
-png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
-png_malloc_default(), and png_free_default() were added.
-
-Support for certain MNG features was enabled.
-
-Support for numbered error messages was added.  However, we never got
-around to actually numbering the error messages.  The function
-png_set_strip_error_numbers() was added (Note: the prototype for this
-function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
-builds of libpng-1.2.15.  It was restored in libpng-1.2.36).
-
-The png_malloc_warn() function was added at libpng-1.2.3.  This issues
-a png_warning and returns NULL instead of aborting when it fails to
-acquire the requested memory allocation.
-
-Support for setting user limits on image width and height was enabled
-by default.  The functions png_set_user_limits(), png_get_user_width_max(),
-and png_get_user_height_max() were added at libpng-1.2.6.
-
-The png_set_add_alpha() function was added at libpng-1.2.7.
-
-The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
-Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
-tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
-deprecated.
-
-A number of macro definitions in support of runtime selection of
-assembler code features (especially Intel MMX code support) were
-added at libpng-1.2.0:
-
-    PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
-    PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
-    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_ASM_FLAGS_INITIALIZED
-    PNG_MMX_READ_FLAGS
-    PNG_MMX_FLAGS
-    PNG_MMX_WRITE_FLAGS
-    PNG_MMX_FLAGS
-
-We added the following functions in support of runtime
-selection of assembler code features:
-
-    png_get_mmx_flagmask()
-    png_set_mmx_thresholds()
-    png_get_asm_flags()
-    png_get_mmx_bitdepth_threshold()
-    png_get_mmx_rowbytes_threshold()
-    png_set_asm_flags()
-
-We replaced all of these functions with simple stubs in libpng-1.2.20,
-when the Intel assembler code was removed due to a licensing issue.
-
-.SH IX.  (Omitted)
-.SH X. Detecting libpng
-
-The png_get_io_ptr() function has been present since libpng-0.88, has never
-changed, and is unaffected by conditional compilation macros.  It is the
-best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88.  In an autoconf "configure.in" you could use
-
-    AC_CHECK_LIB(png, png_get_io_ptr, ...
-
-.SH XI. Source code repository
-
-Since about February 2009, version 1.2.34, libpng has been under "git" source
-control.  The git repository was built from old libpng-x.y.z.tar.gz files
-going back to version 0.70.  You can access the git repository (read only)
-at
-
-    git://libpng.git.sourceforge.net/gitroot/libpng
-
-or you can browse it via "gitweb" at
-
-    http://libpng.git.sourceforge.net/git/gitweb.cgi?p=libpng
-
-Patches can be sent to glennrp at users.sourceforge.net or to
-png-mng-implement at lists.sourceforge.net or you can upload them to
-the libpng bug tracker at
-
-    http://libpng.sourceforge.net
-
-.SH XII. Coding style
-
-Our coding style is similar to the "Allman" style, with curly
-braces on separate lines:
-
-    if (condition)
-    {
-       action;
-    }
-
-    else if (another condition)
-    {
-       another action;
-    }
-
-The braces can be omitted from simple one-line actions:
-
-    if (condition)
-       return (0);
-
-We use 3-space indentation, except for continued statements which
-are usually indented the same as the first line of the statement
-plus four more spaces.
-
-For macro definitions we use 2-space indentation, always leaving the "#"
-in the first column.
-
-    #ifndef PNG_NO_FEATURE
-    #  ifndef PNG_FEATURE_SUPPORTED
-    #    define PNG_FEATURE_SUPPORTED
-    #  endif
-    #endif
-
-Comments appear with the leading "/*" at the same indentation as
-the statement that follows the comment:
-
-    /* Single-line comment */
-    statement;
-
-    /* Multiple-line
-     * comment
-     */
-    statement;
-
-Very short comments can be placed at the end of the statement
-to which they pertain:
-
-    statement;    /* comment */
-
-We don't use C++ style ("//") comments. We have, however,
-used them in the past in some now-abandoned MMX assembler
-code.
-
-Functions and their curly braces are not indented, and
-exported functions are marked with PNGAPI:
-
- /* This is a public function that is visible to
-  * application programers. It does thus-and-so.
-  */
- void PNGAPI
- png_exported_function(png_ptr, png_info, foo)
- {
-    body;
- }
-
-The prototypes for all exported functions appear in png.h,
-above the comment that says
-
-    /* Maintainer: Put new public prototypes here ... */
-
-We mark all non-exported functions with "/* PRIVATE */"":
-
- void /* PRIVATE */
- png_non_exported_function(png_ptr, png_info, foo)
- {
-    body;
- }
-
-The prototypes for non-exported functions (except for those in
-pngtest) appear in
-the PNG_INTERNAL section of png.h
-above the comment that says
-
-  /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
-
-The names of all exported functions and variables begin
-with  "png_", and all publicly visible C preprocessor
-macros begin with "PNG_".
-
-We put a space after each comma and after each semicolon
-in "for" statments, and we put spaces before and after each
-C binary operator and after "for" or "while".  We don't
-put a space between a typecast and the expression being
-cast, nor do we put one between a function name and the
-left parenthesis that follows it:
-
-    for (i = 2; i > 0; --i)
-       y[i] = a(x) + (int)b;
-
-We prefer #ifdef and #ifndef to #if defined() and if !defined()
-when there is only one macro being tested.
-
-We do not use the TAB character for indentation in the C sources.
-
-Other rules can be inferred by inspecting the libpng
-source.
-
-.SH XIII. Y2K Compliance in libpng
-
-October 11, 2009
+October 31, 2008
 
 Since the PNG Development group is an ad-hoc body, we can't make
 an official declaration.
 
 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.2.41beta05 are Y2K compliant.  It is my belief that earlier
+upward through 1.0.41 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
@@ -4152,39 +3895,6 @@ the first widely used release:
  1.0.41rc01          10    10041  10.so.0.41[.0]
  1.2.33              13    10233  12.so.0.33[.0]
  1.0.41              10    10041  10.so.0.41[.0]
- 1.2.34beta01-07     13    10234  12.so.0.34[.0]
- 1.0.42rc01          10    10042  10.so.0.42[.0]
- 1.2.34rc01          13    10234  12.so.0.34[.0]
- 1.0.42              10    10042  10.so.0.42[.0]
- 1.2.34              13    10234  12.so.0.34[.0]
- 1.2.35beta01-03     13    10235  12.so.0.35[.0]
- 1.0.43rc01-02       10    10043  10.so.0.43[.0]
- 1.2.35rc01-02       13    10235  12.so.0.35[.0]
- 1.0.43              10    10043  10.so.0.43[.0]
- 1.2.35              13    10235  12.so.0.35[.0]
- 1.2.36beta01-05     13    10236  12.so.0.36[.0]
- 1.2.36rc01          13    10236  12.so.0.36[.0]
- 1.0.44              10    10044  10.so.0.44[.0]
- 1.2.36              13    10236  12.so.0.36[.0]
- 1.2.37beta01-03     13    10237  12.so.0.37[.0]
- 1.2.37rc01          13    10237  12.so.0.37[.0]
- 1.2.37              13    10237  12.so.0.37[.0]
- 1.2.45              10    10045  12.so.0.45[.0]
- 1.0.46              10    10046  10.so.0.46[.0]
- 1.2.38beta01        13    10238  12.so.0.38[.0]
- 1.2.38rc01-03       13    10238  12.so.0.38[.0]
- 1.0.47              10    10047  10.so.0.47[.0]
- 1.2.38              13    10238  12.so.0.38[.0]
- 1.2.39beta01-05     13    10239  12.so.0.39[.0]
- 1.2.39rc01          13    10239  12.so.0.39[.0]
- 1.0.48              10    10048  10.so.0.48[.0]
- 1.2.39              13    10239  12.so.0.39[.0]
- 1.2.40beta01        13    10240  12.so.0.40[.0]
- 1.2.40rc01          13    10240  12.so.0.40[.0]
- 1.0.49              10    10049  10.so.0.49[.0]
- 1.2.40              13    10240  12.so.0.40[.0]
- 1.0.50              10    10050  10.so.0.50[.0]
- 1.2.41beta01-05     13    10241  12.so.0.41[.0]
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -4240,7 +3950,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.41beta05 - October 11, 2009:
+Libpng version 1.0.41 - October 31, 2008:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
 
@@ -4261,9 +3971,7 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-This code is released under the libpng license.
-
-libpng versions 1.2.6, August 15, 2004, through 1.2.41beta05, October 11, 2009, are
+libpng versions 1.2.6, August 15, 2004, through 1.0.41, October 31, 2008, are
 Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.2.5
 with the following individual added to the list of Contributing Authors
@@ -4362,7 +4070,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 glennrp at users.sourceforge.net
-October 11, 2009
+October 31, 2008
 
 .\" end of man page
 

libpngpf.3

@@ -1,16 +1,12 @@
-.TH LIBPNGPF 3 "October 11, 2009"
+.TH LIBPNGPF 3 "October 31, 2008"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta05
+libpng \- Portable Network Graphics (PNG) Reference Library 1.0.41
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
 
 \fI\fB
 
-\fBvoid png_64bit_product (long \fP\fIv1\fP\fB, long \fP\fIv2\fP\fB, unsigned long \fI*hi_product,
-
-\fBunsigned long \fI*lo_product\fP\fB);\fP
-
 \fI\fB
 
 \fBvoid png_build_gamma_table (png_structp \fIpng_ptr\fP\fB);\fP
@@ -31,18 +27,6 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta05
 
 \fI\fB
 
-\fBint png_check_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_fixed_point \fP\fIint_white_x\fP\fB, png_fixed_point \fP\fIint_white_y\fP\fB, png_fixed_point \fP\fIint_red_x\fP\fB, png_fixed_point \fP\fIint_red_y\fP\fB, png_fixed_point \fP\fIint_green_x\fP\fB, png_fixed_point \fP\fIint_green_y\fP\fB, png_fixed_point \fP\fIint_blue_x\fP\fB, png_fixed_point \fIint_blue_y\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
-\fBvoid png_check_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
-
-\fI\fB
-
-\fI\fB
-
 \fBvoid png_check_chunk_name (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
 
 \fI\fB

missing

@@ -1,10 +1,10 @@
 #! /bin/sh
 # Common stub for a few missing GNU programs while installing.
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2006-05-10.23
 
-# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006,
-# 2008, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006
+#   Free Software Foundation, Inc.
 # Originally by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
 
 # This program is free software; you can redistribute it and/or modify
@@ -18,7 +18,9 @@ scriptversion=2009-04-28.21; # UTC
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301, USA.
 
 # As a special exception to the GNU General Public License, if you
 # distribute this file as part of a program that contains a
@@ -87,9 +89,6 @@ Supported PROGRAM values:
   tar          try tar, gnutar, gtar, then tar without non-portable flags
   yacc         create \`y.tab.[ch]', if possible, from existing .[ch]
 
-Version suffixes to PROGRAM as well as the prefixes \`gnu-', \`gnu', and
-\`g' are ignored when checking the name.
-
 Send bug reports to <bug-automake@gnu.org>."
     exit $?
     ;;
@@ -107,22 +106,15 @@ Send bug reports to <bug-automake@gnu.org>."
 
 esac
 
-# normalize program name to check for.
-program=`echo "$1" | sed '
-  s/^gnu-//; t
-  s/^gnu//; t
-  s/^g//; t'`
-
 # Now exit if we have it, but it failed.  Also exit now if we
 # don't have it and --version was passed (most likely to detect
-# the program).  This is about non-GNU programs, so use $1 not
-# $program.
+# the program).
 case $1 in
-  lex*|yacc*)
+  lex|yacc)
     # Not GNU programs, they don't have --version.
     ;;
 
-  tar*)
+  tar)
     if test -n "$run"; then
        echo 1>&2 "ERROR: \`tar' requires --run"
        exit 1
@@ -146,7 +138,7 @@ esac
 
 # If it does not exist, or fails to run (possibly an outdated version),
 # try to emulate it.
-case $program in
+case $1 in
   aclocal*)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
@@ -156,7 +148,7 @@ WARNING: \`$1' is $msg.  You should only need it if
     touch aclocal.m4
     ;;
 
-  autoconf*)
+  autoconf)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
          you modified \`${configure_ac}'.  You might want to install the
@@ -165,7 +157,7 @@ WARNING: \`$1' is $msg.  You should only need it if
     touch configure
     ;;
 
-  autoheader*)
+  autoheader)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
          you modified \`acconfig.h' or \`${configure_ac}'.  You might want
@@ -195,7 +187,7 @@ WARNING: \`$1' is $msg.  You should only need it if
 	   while read f; do touch "$f"; done
     ;;
 
-  autom4te*)
+  autom4te)
     echo 1>&2 "\
 WARNING: \`$1' is needed, but is $msg.
          You might have modified some files without having the
@@ -218,7 +210,7 @@ WARNING: \`$1' is needed, but is $msg.
     fi
     ;;
 
-  bison*|yacc*)
+  bison|yacc)
     echo 1>&2 "\
 WARNING: \`$1' $msg.  You should only need it if
          you modified a \`.y' file.  You may need the \`Bison' package
@@ -248,7 +240,7 @@ WARNING: \`$1' $msg.  You should only need it if
     fi
     ;;
 
-  lex*|flex*)
+  lex|flex)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
          you modified a \`.l' file.  You may need the \`Flex' package
@@ -271,7 +263,7 @@ WARNING: \`$1' is $msg.  You should only need it if
     fi
     ;;
 
-  help2man*)
+  help2man)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
 	 you modified a dependency of a manual page.  You may need the
@@ -285,11 +277,11 @@ WARNING: \`$1' is $msg.  You should only need it if
     else
 	test -z "$file" || exec >$file
 	echo ".ab help2man is required to generate this page"
-	exit $?
+	exit 1
     fi
     ;;
 
-  makeinfo*)
+  makeinfo)
     echo 1>&2 "\
 WARNING: \`$1' is $msg.  You should only need it if
          you modified a \`.texi' or \`.texinfo' file, or any other file
@@ -318,7 +310,7 @@ WARNING: \`$1' is $msg.  You should only need it if
     touch $file
     ;;
 
-  tar*)
+  tar)
     shift
 
     # We have already tried tar in the generic part.
@@ -371,6 +363,5 @@ exit 0
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
+# time-stamp-end: "$"
 # End:

mkinstalldirs

@@ -1,7 +1,7 @@
 #! /bin/sh
 # mkinstalldirs --- make directory hierarchy
 
-scriptversion=2009-04-28.21; # UTC
+scriptversion=2006-05-11.19
 
 # Original author: Noah Friedman <friedman@prep.ai.mit.edu>
 # Created: 1993-05-16
@@ -157,6 +157,5 @@ exit $errstatus
 # eval: (add-hook 'write-file-hooks 'time-stamp)
 # time-stamp-start: "scriptversion="
 # time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
+# time-stamp-end: "$"
 # End:

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "October 11, 2009"
+.TH PNG 5 "October 31, 2008"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -1,14 +1,11 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
 #define PNG_INTERNAL
@@ -16,7 +13,7 @@
 #include "png.h"
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_41beta05 Your_png_h_is_not_version_1_2_41beta05;
+typedef version_1_0_41 Your_png_h_is_not_version_1_0_41;
 
 /* Version information for C files.  This had better match the version
  * string defined in png.h.  */
@@ -56,18 +53,18 @@ PNG_tRNS;
 PNG_zTXt;
 
 #ifdef PNG_READ_SUPPORTED
-/* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+/* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
-/* Start of interlace block */
+/* start of interlace block */
 PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
 
-/* Offset to next interlace block */
+/* offset to next interlace block */
 PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
 
-/* Start of interlace block in the y direction */
+/* start of interlace block in the y direction */
 PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
 
-/* Offset to next interlace block in the y direction */
+/* offset to next interlace block in the y direction */
 PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
 
 /* Height of interlace block.  This is not currently used - if you need
@@ -95,9 +92,8 @@ PNG_CONST int FARDATA png_pass_dsp_mask[]
 void PNGAPI
 png_set_sig_bytes(png_structp png_ptr, int num_bytes)
 {
-   if (png_ptr == NULL)
-      return;
-   png_debug(1, "in png_set_sig_bytes");
+   if (png_ptr == NULL) return;
+   png_debug(1, "in png_set_sig_bytes\n");
    if (num_bytes > 8)
       png_error(png_ptr, "Too many bytes for PNG signature.");
 
@@ -148,7 +144,7 @@ png_check_sig(png_bytep sig, int num)
 #ifdef PNG_1_0_X
 voidpf PNGAPI
 #else
-voidpf /* PRIVATE */
+voidpf /* private */
 #endif
 png_zalloc(voidpf png_ptr, uInt items, uInt size)
 {
@@ -157,8 +153,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
    png_uint_32 save_flags=p->flags;
    png_uint_32 num_bytes;
 
-   if (png_ptr == NULL)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
    if (items > PNG_UINT_32_MAX/size)
    {
      png_warning (p, "Potential overflow in png_zalloc()");
@@ -188,11 +183,11 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
    return ((voidpf)ptr);
 }
 
-/* Function to free memory for zlib */
+/* function to free memory for zlib */
 #ifdef PNG_1_0_X
 void PNGAPI
 #else
-void /* PRIVATE */
+void /* private */
 #endif
 png_zfree(voidpf png_ptr, voidpf ptr)
 {
@@ -245,9 +240,8 @@ png_create_info_struct(png_structp png_ptr)
 {
    png_infop info_ptr;
 
-   png_debug(1, "in png_create_info_struct");
-   if (png_ptr == NULL)
-      return (NULL);
+   png_debug(1, "in png_create_info_struct\n");
+   if (png_ptr == NULL) return (NULL);
 #ifdef PNG_USER_MEM_SUPPORTED
    info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
       png_ptr->malloc_fn, png_ptr->mem_ptr);
@@ -269,10 +263,9 @@ void PNGAPI
 png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
 {
    png_infop info_ptr = NULL;
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
 
-   png_debug(1, "in png_destroy_info_struct");
+   png_debug(1, "in png_destroy_info_struct\n");
    if (info_ptr_ptr != NULL)
       info_ptr = *info_ptr_ptr;
 
@@ -309,19 +302,18 @@ png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
 {
    png_infop info_ptr = *ptr_ptr;
 
-   if (info_ptr == NULL)
-      return;
+   if (info_ptr == NULL) return;
 
-   png_debug(1, "in png_info_init_3");
+   png_debug(1, "in png_info_init_3\n");
 
    if (png_sizeof(png_info) > png_info_struct_size)
-   {
-      png_destroy_struct(info_ptr);
-      info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
-      *ptr_ptr = info_ptr;
-   }
+     {
+       png_destroy_struct(info_ptr);
+       info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
+       *ptr_ptr = info_ptr;
+     }
 
-   /* Set everything to 0 */
+   /* set everything to 0 */
    png_memset(info_ptr, 0, png_sizeof(png_info));
 }
 
@@ -330,7 +322,7 @@ void PNGAPI
 png_data_freer(png_structp png_ptr, png_infop info_ptr,
    int freer, png_uint_32 mask)
 {
-   png_debug(1, "in png_data_freer");
+   png_debug(1, "in png_data_freer\n");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
    if (freer == PNG_DESTROY_WILL_FREE_DATA)
@@ -347,250 +339,250 @@ void PNGAPI
 png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
    int num)
 {
-   png_debug(1, "in png_free_data");
+   png_debug(1, "in png_free_data\n");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
 #if defined(PNG_TEXT_SUPPORTED)
-   /* Free text item num or (if num == -1) all text items */
+/* free text item num or (if num == -1) all text items */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
+if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_TEXT)
+if (mask & PNG_FREE_TEXT)
 #endif
+{
+   if (num != -1)
    {
-      if (num != -1)
-      {
-         if (info_ptr->text && info_ptr->text[num].key)
-         {
-            png_free(png_ptr, info_ptr->text[num].key);
-            info_ptr->text[num].key = NULL;
-         }
-      }
-      else
-      {
-         int i;
-         for (i = 0; i < info_ptr->num_text; i++)
-             png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
-         png_free(png_ptr, info_ptr->text);
-         info_ptr->text = NULL;
-         info_ptr->num_text=0;
-      }
+     if (info_ptr->text && info_ptr->text[num].key)
+     {
+         png_free(png_ptr, info_ptr->text[num].key);
+         info_ptr->text[num].key = NULL;
+     }
    }
+   else
+   {
+       int i;
+       for (i = 0; i < info_ptr->num_text; i++)
+           png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
+       png_free(png_ptr, info_ptr->text);
+       info_ptr->text = NULL;
+       info_ptr->num_text=0;
+   }
+}
 #endif
 
 #if defined(PNG_tRNS_SUPPORTED)
-   /* Free any tRNS entry */
+/* free any tRNS entry */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
+if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
 #else
-   if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
+if ((mask & PNG_FREE_TRNS) && (png_ptr->flags & PNG_FLAG_FREE_TRNS))
 #endif
-   {
-      png_free(png_ptr, info_ptr->trans);
-      info_ptr->trans = NULL;
-      info_ptr->valid &= ~PNG_INFO_tRNS;
+{
+    png_free(png_ptr, info_ptr->trans);
+    info_ptr->trans = NULL;
+    info_ptr->valid &= ~PNG_INFO_tRNS;
 #ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
+    png_ptr->flags &= ~PNG_FLAG_FREE_TRNS;
 #endif
-   }
+}
 #endif
 
 #if defined(PNG_sCAL_SUPPORTED)
-   /* Free any sCAL entry */
+/* free any sCAL entry */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
+if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_SCAL)
+if (mask & PNG_FREE_SCAL)
 #endif
-   {
+{
 #if defined(PNG_FIXED_POINT_SUPPORTED) && !defined(PNG_FLOATING_POINT_SUPPORTED)
-      png_free(png_ptr, info_ptr->scal_s_width);
-      png_free(png_ptr, info_ptr->scal_s_height);
-      info_ptr->scal_s_width = NULL;
-      info_ptr->scal_s_height = NULL;
+    png_free(png_ptr, info_ptr->scal_s_width);
+    png_free(png_ptr, info_ptr->scal_s_height);
+    info_ptr->scal_s_width = NULL;
+    info_ptr->scal_s_height = NULL;
 #endif
-      info_ptr->valid &= ~PNG_INFO_sCAL;
-   }
+    info_ptr->valid &= ~PNG_INFO_sCAL;
+}
 #endif
 
 #if defined(PNG_pCAL_SUPPORTED)
-   /* Free any pCAL entry */
+/* free any pCAL entry */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
+if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_PCAL)
+if (mask & PNG_FREE_PCAL)
 #endif
-   {
-      png_free(png_ptr, info_ptr->pcal_purpose);
-      png_free(png_ptr, info_ptr->pcal_units);
-      info_ptr->pcal_purpose = NULL;
-      info_ptr->pcal_units = NULL;
-      if (info_ptr->pcal_params != NULL)
-         {
-            int i;
-            for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
-            {
-               png_free(png_ptr, info_ptr->pcal_params[i]);
-               info_ptr->pcal_params[i]=NULL;
-            }
-            png_free(png_ptr, info_ptr->pcal_params);
-            info_ptr->pcal_params = NULL;
-         }
-      info_ptr->valid &= ~PNG_INFO_pCAL;
-   }
+{
+    png_free(png_ptr, info_ptr->pcal_purpose);
+    png_free(png_ptr, info_ptr->pcal_units);
+    info_ptr->pcal_purpose = NULL;
+    info_ptr->pcal_units = NULL;
+    if (info_ptr->pcal_params != NULL)
+    {
+        int i;
+        for (i = 0; i < (int)info_ptr->pcal_nparams; i++)
+        {
+          png_free(png_ptr, info_ptr->pcal_params[i]);
+          info_ptr->pcal_params[i]=NULL;
+        }
+        png_free(png_ptr, info_ptr->pcal_params);
+        info_ptr->pcal_params = NULL;
+    }
+    info_ptr->valid &= ~PNG_INFO_pCAL;
+}
 #endif
 
 #if defined(PNG_iCCP_SUPPORTED)
-   /* Free any iCCP entry */
+/* free any iCCP entry */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
+if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_ICCP)
+if (mask & PNG_FREE_ICCP)
 #endif
-   {
-      png_free(png_ptr, info_ptr->iccp_name);
-      png_free(png_ptr, info_ptr->iccp_profile);
-      info_ptr->iccp_name = NULL;
-      info_ptr->iccp_profile = NULL;
-      info_ptr->valid &= ~PNG_INFO_iCCP;
-   }
+{
+    png_free(png_ptr, info_ptr->iccp_name);
+    png_free(png_ptr, info_ptr->iccp_profile);
+    info_ptr->iccp_name = NULL;
+    info_ptr->iccp_profile = NULL;
+    info_ptr->valid &= ~PNG_INFO_iCCP;
+}
 #endif
 
 #if defined(PNG_sPLT_SUPPORTED)
-   /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
+/* free a given sPLT entry, or (if num == -1) all sPLT entries */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
+if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_SPLT)
+if (mask & PNG_FREE_SPLT)
 #endif
+{
+   if (num != -1)
    {
-      if (num != -1)
+      if (info_ptr->splt_palettes)
       {
-         if (info_ptr->splt_palettes)
-         {
-            png_free(png_ptr, info_ptr->splt_palettes[num].name);
-            png_free(png_ptr, info_ptr->splt_palettes[num].entries);
-            info_ptr->splt_palettes[num].name = NULL;
-            info_ptr->splt_palettes[num].entries = NULL;
-         }
-      }
-      else
-      {
-         if (info_ptr->splt_palettes_num)
-         {
-            int i;
-            for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
-               png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
-
-            png_free(png_ptr, info_ptr->splt_palettes);
-            info_ptr->splt_palettes = NULL;
-            info_ptr->splt_palettes_num = 0;
-         }
-         info_ptr->valid &= ~PNG_INFO_sPLT;
+          png_free(png_ptr, info_ptr->splt_palettes[num].name);
+          png_free(png_ptr, info_ptr->splt_palettes[num].entries);
+          info_ptr->splt_palettes[num].name = NULL;
+          info_ptr->splt_palettes[num].entries = NULL;
       }
    }
+   else
+   {
+       if (info_ptr->splt_palettes_num)
+       {
+         int i;
+         for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
+            png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, i);
+
+         png_free(png_ptr, info_ptr->splt_palettes);
+         info_ptr->splt_palettes = NULL;
+         info_ptr->splt_palettes_num = 0;
+       }
+       info_ptr->valid &= ~PNG_INFO_sPLT;
+   }
+}
 #endif
 
 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-   if (png_ptr->unknown_chunk.data)
-   {
-      png_free(png_ptr, png_ptr->unknown_chunk.data);
-      png_ptr->unknown_chunk.data = NULL;
-   }
+  if (png_ptr->unknown_chunk.data)
+  {
+    png_free(png_ptr, png_ptr->unknown_chunk.data);
+    png_ptr->unknown_chunk.data = NULL;
+  }
 
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
+if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_UNKN)
+if (mask & PNG_FREE_UNKN)
 #endif
+{
+   if (num != -1)
    {
-      if (num != -1)
-      {
-          if (info_ptr->unknown_chunks)
-          {
-             png_free(png_ptr, info_ptr->unknown_chunks[num].data);
-             info_ptr->unknown_chunks[num].data = NULL;
-          }
-      }
-      else
-      {
-         int i;
-
-         if (info_ptr->unknown_chunks_num)
-         {
-            for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++)
-               png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
-
-            png_free(png_ptr, info_ptr->unknown_chunks);
-            info_ptr->unknown_chunks = NULL;
-            info_ptr->unknown_chunks_num = 0;
-         }
-      }
+       if (info_ptr->unknown_chunks)
+       {
+          png_free(png_ptr, info_ptr->unknown_chunks[num].data);
+          info_ptr->unknown_chunks[num].data = NULL;
+       }
    }
+   else
+   {
+       int i;
+
+       if (info_ptr->unknown_chunks_num)
+       {
+         for (i = 0; i < (int)info_ptr->unknown_chunks_num; i++)
+            png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, i);
+
+         png_free(png_ptr, info_ptr->unknown_chunks);
+         info_ptr->unknown_chunks = NULL;
+         info_ptr->unknown_chunks_num = 0;
+       }
+   }
+}
 #endif
 
 #if defined(PNG_hIST_SUPPORTED)
-   /* Free any hIST entry */
+/* free any hIST entry */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_HIST)  & info_ptr->free_me)
+if ((mask & PNG_FREE_HIST)  & info_ptr->free_me)
 #else
-   if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
+if ((mask & PNG_FREE_HIST) && (png_ptr->flags & PNG_FLAG_FREE_HIST))
 #endif
-   {
-      png_free(png_ptr, info_ptr->hist);
-      info_ptr->hist = NULL;
-      info_ptr->valid &= ~PNG_INFO_hIST;
+{
+    png_free(png_ptr, info_ptr->hist);
+    info_ptr->hist = NULL;
+    info_ptr->valid &= ~PNG_INFO_hIST;
 #ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
+    png_ptr->flags &= ~PNG_FLAG_FREE_HIST;
 #endif
-   }
+}
 #endif
 
-   /* Free any PLTE entry that was internally allocated */
+/* free any PLTE entry that was internally allocated */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
+if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
 #else
-   if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
+if ((mask & PNG_FREE_PLTE) && (png_ptr->flags & PNG_FLAG_FREE_PLTE))
 #endif
-   {
-      png_zfree(png_ptr, info_ptr->palette);
-      info_ptr->palette = NULL;
-      info_ptr->valid &= ~PNG_INFO_PLTE;
+{
+    png_zfree(png_ptr, info_ptr->palette);
+    info_ptr->palette = NULL;
+    info_ptr->valid &= ~PNG_INFO_PLTE;
 #ifndef PNG_FREE_ME_SUPPORTED
-      png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
+    png_ptr->flags &= ~PNG_FLAG_FREE_PLTE;
 #endif
-      info_ptr->num_palette = 0;
-   }
+    info_ptr->num_palette = 0;
+}
 
 #if defined(PNG_INFO_IMAGE_SUPPORTED)
-   /* Free any image bits attached to the info structure */
+/* free any image bits attached to the info structure */
 #ifdef PNG_FREE_ME_SUPPORTED
-   if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
+if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
 #else
-   if (mask & PNG_FREE_ROWS)
+if (mask & PNG_FREE_ROWS)
 #endif
-   {
-      if (info_ptr->row_pointers)
-      {
-         int row;
-         for (row = 0; row < (int)info_ptr->height; row++)
-         {
-            png_free(png_ptr, info_ptr->row_pointers[row]);
-            info_ptr->row_pointers[row]=NULL;
-         }
-         png_free(png_ptr, info_ptr->row_pointers);
-         info_ptr->row_pointers=NULL;
-      }
-      info_ptr->valid &= ~PNG_INFO_IDAT;
-   }
+{
+    if (info_ptr->row_pointers)
+    {
+       int row;
+       for (row = 0; row < (int)info_ptr->height; row++)
+       {
+          png_free(png_ptr, info_ptr->row_pointers[row]);
+          info_ptr->row_pointers[row]=NULL;
+       }
+       png_free(png_ptr, info_ptr->row_pointers);
+       info_ptr->row_pointers=NULL;
+    }
+    info_ptr->valid &= ~PNG_INFO_IDAT;
+}
 #endif
 
 #ifdef PNG_FREE_ME_SUPPORTED
    if (num == -1)
-      info_ptr->free_me &= ~mask;
+     info_ptr->free_me &= ~mask;
    else
-      info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
+     info_ptr->free_me &= ~(mask & ~PNG_FREE_MUL);
 #endif
 }
 
@@ -601,16 +593,16 @@ png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
 void /* PRIVATE */
 png_info_destroy(png_structp png_ptr, png_infop info_ptr)
 {
-   png_debug(1, "in png_info_destroy");
+   png_debug(1, "in png_info_destroy\n");
 
    png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
 
-#if defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#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;
+       png_free(png_ptr, png_ptr->chunk_list);
+       png_ptr->chunk_list=NULL;
+       png_ptr->num_chunk_list = 0;
    }
 #endif
 
@@ -625,8 +617,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
 png_voidp PNGAPI
 png_get_io_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
    return (png_ptr->io_ptr);
 }
 
@@ -641,9 +632,8 @@ png_get_io_ptr(png_structp png_ptr)
 void PNGAPI
 png_init_io(png_structp png_ptr, png_FILE_p fp)
 {
-   png_debug(1, "in png_init_io");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_init_io\n");
+   if (png_ptr == NULL) return;
    png_ptr->io_ptr = (png_voidp)fp;
 }
 #endif
@@ -659,8 +649,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
         {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
          "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
 
-   if (png_ptr == NULL)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
    if (png_ptr->time_buffer == NULL)
    {
       png_ptr->time_buffer = (png_charp)png_malloc(png_ptr, (png_uint_32)(29*
@@ -704,9 +693,9 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
 png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
-   return ((png_charp) "\n libpng version 1.2.41beta05 - October 11, 2009\n\
-   Copyright (c) 1998-2009 Glenn Randers-Pehrson\n\
+   png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
+   return ((png_charp) "\n libpng version 1.0.41 - October 31, 2008\n\
+   Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
    Copyright (c) 1996-1997 Andreas Dilger\n\
    Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");
 }
@@ -723,7 +712,7 @@ png_charp PNGAPI
 png_get_libpng_ver(png_structp png_ptr)
 {
    /* Version of *.c files used when building libpng */
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
    return ((png_charp) PNG_LIBPNG_VER_STRING);
 }
 
@@ -731,7 +720,7 @@ png_charp PNGAPI
 png_get_header_ver(png_structp png_ptr)
 {
    /* Version of *.h files used when building libpng */
-   png_ptr = png_ptr;  /* Silence compiler warning about unused png_ptr */
+   png_ptr = png_ptr;  /* silence compiler warning about unused png_ptr */
    return ((png_charp) PNG_LIBPNG_VER_STRING);
 }
 
@@ -739,7 +728,7 @@ png_charp PNGAPI
 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 */
+   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)"
@@ -752,7 +741,7 @@ png_get_header_version(png_structp png_ptr)
 int PNGAPI
 png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
 {
-   /* Check chunk_name and return "keep" value if it's on the list, else 0 */
+   /* check chunk_name and return "keep" value if it's on the list, else 0 */
    int i;
    png_bytep p;
    if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list<=0)
@@ -769,8 +758,7 @@ png_handle_as_unknown(png_structp png_ptr, png_bytep chunk_name)
 int PNGAPI
 png_reset_zstream(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
-      return Z_STREAM_ERROR;
+   if (png_ptr == NULL) return Z_STREAM_ERROR;
    return (inflateReset(&png_ptr->zstream));
 }
 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
@@ -786,11 +774,11 @@ png_access_version_number(void)
 
 #if defined(PNG_READ_SUPPORTED) && defined(PNG_ASSEMBLER_CODE_SUPPORTED)
 #if !defined(PNG_1_0_X)
-/* This function was added to libpng 1.2.0 */
+/* this function was added to libpng 1.2.0 */
 int PNGAPI
 png_mmx_support(void)
 {
-   /* Obsolete, to be removed from libpng-1.4.0 */
+   /* obsolete, to be removed from libpng-1.4.0 */
     return -1;
 }
 #endif /* PNG_1_0_X */
@@ -803,268 +791,9 @@ png_mmx_support(void)
 png_size_t PNGAPI
 png_convert_size(size_t size)
 {
-   if (size > (png_size_t)-1)
-      PNG_ABORT();  /* We haven't got access to png_ptr, so no png_error() */
-   return ((png_size_t)size);
+  if (size > (png_size_t)-1)
+     PNG_ABORT();  /* We haven't got access to png_ptr, so no png_error() */
+  return ((png_size_t)size);
 }
 #endif /* PNG_SIZE_T */
-
-/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#if defined(PNG_cHRM_SUPPORTED)
-#if !defined(PNG_NO_CHECK_cHRM)
-
-/*
- *    Multiply two 32-bit numbers, V1 and V2, using 32-bit
- *    arithmetic, to produce a 64 bit result in the HI/LO words.
- *
- *                  A B
- *                x C D
- *               ------
- *              AD || BD
- *        AC || CB || 0
- *
- *    where A and B are the high and low 16-bit words of V1,
- *    C and D are the 16-bit words of V2, AD is the product of
- *    A and D, and X || Y is (X << 16) + Y.
-*/
-
-void /* PRIVATE */
-png_64bit_product (long v1, long v2, unsigned long *hi_product,
-   unsigned long *lo_product)
-{
-   int a, b, c, d;
-   long lo, hi, x, y;
-
-   a = (v1 >> 16) & 0xffff;
-   b = v1 & 0xffff;
-   c = (v2 >> 16) & 0xffff;
-   d = v2 & 0xffff;
-
-   lo = b * d;                   /* BD */
-   x = a * d + c * b;            /* AD + CB */
-   y = ((lo >> 16) & 0xffff) + x;
-
-   lo = (lo & 0xffff) | ((y & 0xffff) << 16);
-   hi = (y >> 16) & 0xffff;
-
-   hi += a * c;                  /* AC */
-
-   *hi_product = (unsigned long)hi;
-   *lo_product = (unsigned long)lo;
-}
-
-int /* PRIVATE */
-png_check_cHRM_fixed(png_structp png_ptr,
-   png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
-   png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
-   png_fixed_point blue_x, png_fixed_point blue_y)
-{
-   int ret = 1;
-   unsigned long xy_hi,xy_lo,yx_hi,yx_lo;
-
-   png_debug(1, "in function png_check_cHRM_fixed");
-   if (png_ptr == NULL)
-      return 0;
-
-   if (white_x < 0 || white_y <= 0 ||
-         red_x < 0 ||   red_y <  0 ||
-       green_x < 0 || green_y <  0 ||
-        blue_x < 0 ||  blue_y <  0)
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set negative chromaticity value");
-      ret = 0;
-   }
-   if (white_x > (png_fixed_point) PNG_UINT_31_MAX ||
-       white_y > (png_fixed_point) PNG_UINT_31_MAX ||
-         red_x > (png_fixed_point) PNG_UINT_31_MAX ||
-         red_y > (png_fixed_point) PNG_UINT_31_MAX ||
-       green_x > (png_fixed_point) PNG_UINT_31_MAX ||
-       green_y > (png_fixed_point) PNG_UINT_31_MAX ||
-        blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
-        blue_y > (png_fixed_point) PNG_UINT_31_MAX )
-   {
-      png_warning(png_ptr,
-        "Ignoring attempt to set chromaticity value exceeding 21474.83");
-      ret = 0;
-   }
-   if (white_x > 100000L - white_y)
-   {
-      png_warning(png_ptr, "Invalid cHRM white point");
-      ret = 0;
-   }
-   if (red_x > 100000L - red_y)
-   {
-      png_warning(png_ptr, "Invalid cHRM red point");
-      ret = 0;
-   }
-   if (green_x > 100000L - green_y)
-   {
-      png_warning(png_ptr, "Invalid cHRM green point");
-      ret = 0;
-   }
-   if (blue_x > 100000L - blue_y)
-   {
-      png_warning(png_ptr, "Invalid cHRM blue point");
-      ret = 0;
-   }
-
-   png_64bit_product(green_x - red_x, blue_y - red_y, &xy_hi, &xy_lo);
-   png_64bit_product(green_y - red_y, blue_x - red_x, &yx_hi, &yx_lo);
-
-   if (xy_hi == yx_hi && xy_lo == yx_lo)
-   {
-      png_warning(png_ptr,
-         "Ignoring attempt to set cHRM RGB triangle with zero area");
-      ret = 0;
-   }
-
-   return ret;
-}
-#endif /* NO_PNG_CHECK_cHRM */
-#endif /* PNG_cHRM_SUPPORTED */
-
-
-void /* PRIVATE */
-png_check_IHDR(png_structp png_ptr,
-   png_uint_32 width, png_uint_32 height, int bit_depth,
-   int color_type, int interlace_type, int compression_type,
-   int filter_type)
-{
-   int error = 0;
-
-   /* Check for width and height valid values */
-   if (width == 0)
-   {
-      png_warning(png_ptr, "Image width is zero in IHDR");
-      error = 1;
-   }
-
-   if (height == 0)
-   {
-      png_warning(png_ptr, "Image height is zero in IHDR");
-      error = 1;
-   }
-
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (width > png_ptr->user_width_max || width > PNG_USER_WIDTH_MAX)
-#else
-   if (width > PNG_USER_WIDTH_MAX)
-#endif
-   {
-      png_warning(png_ptr, "Image width exceeds user limit in IHDR");
-      error = 1;
-   }
-
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-   if (height > png_ptr->user_height_max || height > PNG_USER_HEIGHT_MAX)
-#else
-   if (height > PNG_USER_HEIGHT_MAX)
-#endif
-   {
-      png_warning(png_ptr, "Image height exceeds user limit in IHDR");
-      error = 1;
-   }
-
-   if (width > PNG_UINT_31_MAX)
-   {
-      png_warning(png_ptr, "Invalid image width in IHDR");
-      error = 1;
-   }
-
-   if ( height > PNG_UINT_31_MAX)
-   {
-      png_warning(png_ptr, "Invalid image height in IHDR");
-      error = 1;
-   }
-
-   if ( width > (PNG_UINT_32_MAX
-                 >> 3)      /* 8-byte RGBA pixels */
-                 - 64       /* bigrowbuf hack */
-                 - 1        /* filter byte */
-                 - 7*8      /* rounding of width to multiple of 8 pixels */
-                 - 8)       /* extra max_pixel_depth pad */
-      png_warning(png_ptr, "Width is too large for libpng to process pixels");
-
-   /* Check other values */
-   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
-       bit_depth != 8 && bit_depth != 16)
-   {
-      png_warning(png_ptr, "Invalid bit depth in IHDR");
-      error = 1;
-   }
-
-   if (color_type < 0 || color_type == 1 ||
-       color_type == 5 || color_type > 6)
-   {
-      png_warning(png_ptr, "Invalid color type in IHDR");
-      error = 1;
-   }
-
-   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
-       ((color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
-   {
-      png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
-      error = 1;
-   }
-
-   if (interlace_type >= PNG_INTERLACE_LAST)
-   {
-      png_warning(png_ptr, "Unknown interlace method in IHDR");
-      error = 1;
-   }
-
-   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
-   {
-      png_warning(png_ptr, "Unknown compression method in IHDR");
-      error = 1;
-   }
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-   /* Accept filter_method 64 (intrapixel differencing) only if
-    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
-    * 2. Libpng did not read a PNG signature (this filter_method is only
-    *    used in PNG datastreams that are embedded in MNG datastreams) and
-    * 3. The application called png_permit_mng_features with a mask that
-    *    included PNG_FLAG_MNG_FILTER_64 and
-    * 4. The filter_method is 64 and
-    * 5. The color_type is RGB or RGBA
-    */
-   if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
-       png_ptr->mng_features_permitted)
-      png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
-
-   if (filter_type != PNG_FILTER_TYPE_BASE)
-   {
-      if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
-         (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
-         ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
-         (color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
-      {
-         png_warning(png_ptr, "Unknown filter method in IHDR");
-         error = 1;
-      }
-
-      if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
-      {
-         png_warning(png_ptr, "Invalid filter method in IHDR");
-         error = 1;
-      }
-   }
-
-#else
-   if (filter_type != PNG_FILTER_TYPE_BASE)
-   {
-      png_warning(png_ptr, "Unknown filter method in IHDR");
-      error = 1;
-   }
-#endif
-
-   if (error == 1)
-      png_error(png_ptr, "Invalid IHDR data");
-}
-
 #endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */

png.h

@@ -1,16 +1,14 @@
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.41beta05 - October 11, 2009
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * libpng version 1.0.41 - October 31, 2008
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license (See LICENSE, below)
- *
  * Authors and maintainers:
  *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
  *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.2.41beta05 - October 11, 2009: Glenn
+ *  libpng versions 0.97, January 1998, through 1.0.41 - October 31, 2008: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -214,38 +212,6 @@
  *    1.0.41rc01              10    10041  10.so.0.41[.0]
  *    1.2.33                  13    10233  12.so.0.33[.0]
  *    1.0.41                  10    10041  10.so.0.41[.0]
- *    1.2.34beta01-07         13    10234  12.so.0.34[.0]
- *    1.0.42rc01              10    10042  10.so.0.42[.0]
- *    1.2.34rc01              13    10234  12.so.0.34[.0]
- *    1.0.42                  10    10042  10.so.0.42[.0]
- *    1.2.34                  13    10234  12.so.0.34[.0]
- *    1.2.35beta01-03         13    10235  12.so.0.35[.0]
- *    1.0.43rc01-02           10    10043  10.so.0.43[.0]
- *    1.2.35rc01-02           13    10235  12.so.0.35[.0]
- *    1.0.43                  10    10043  10.so.0.43[.0]
- *    1.2.35                  13    10235  12.so.0.35[.0]
- *    1.2.36beta01-05         13    10236  12.so.0.36[.0]
- *    1.2.36rc01              13    10236  12.so.0.36[.0]
- *    1.0.44                  10    10044  10.so.0.44[.0]
- *    1.2.36                  13    10236  12.so.0.36[.0]
- *    1.2.37beta01-03         13    10237  12.so.0.37[.0]
- *    1.2.37rc01              13    10237  12.so.0.37[.0]
- *    1.2.37                  13    10237  12.so.0.37[.0]
- *    1.2.45                  10    10045  12.so.0.45[.0]
- *    1.0.46                  10    10046  10.so.0.46[.0]
- *    1.2.38beta01            13    10238  12.so.0.38[.0]
- *    1.2.38rc01-03           13    10238  12.so.0.38[.0]
- *    1.0.47                  10    10047  10.so.0.47[.0]
- *    1.2.38                  13    10238  12.so.0.38[.0]
- *    1.2.39beta01-05         13    10239  12.so.0.39[.0]
- *    1.2.39rc01              13    10239  12.so.0.39[.0]
- *    1.0.48                  10    10048  10.so.0.48[.0]
- *    1.2.39                  13    10239  12.so.0.39[.0]
- *    1.2.40beta01            13    10240  12.so.0.40[.0]
- *    1.2.40rc01              13    10240  12.so.0.40[.0]
- *    1.0.49                  10    10049  10.so.0.49[.0]
- *    1.2.40                  13    10240  12.so.0.40[.0]
- *    1.2.41beta01-05         13    10241  12.so.0.41[.0]
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -275,10 +241,8 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * This code is released under the libpng license.
- *
- * libpng versions 1.2.6, August 15, 2004, through 1.2.41beta05, October 11, 2009, are
- * Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are
+ * libpng versions 1.2.6, August 15, 2004, through 1.0.41, October 31, 2008, are
+ * Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
  * distributed according to the same disclaimer and license as libpng-1.2.5
  * with the following individual added to the list of Contributing Authors:
  *
@@ -389,13 +353,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    October 11, 2009
+ *    October 31, 2008
  *
  *    Since the PNG Development group is an ad-hoc body, we can't make
  *    an official declaration.
  *
  *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.2.41beta05 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.0.41 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
@@ -451,22 +415,21 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.41beta05"
+#define PNG_LIBPNG_VER_STRING "1.0.41"
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.2.41beta05 - October 11, 2009\n"
+   " libpng version 1.0.41 - October 31, 2008\n"
 
 #define PNG_LIBPNG_VER_SONUM   0
-#define PNG_LIBPNG_VER_DLLNUM  13
+#define PNG_LIBPNG_VER_DLLNUM  10
 
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   2
+#define PNG_LIBPNG_VER_MINOR   0
 #define PNG_LIBPNG_VER_RELEASE 41
 /* This should match the numeric part of the final component of
- * PNG_LIBPNG_VER_STRING, omitting any leading zero:
- */
+ * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  05
+#define PNG_LIBPNG_VER_BUILD  0
 
 /* Release Status */
 #define PNG_LIBPNG_BUILD_ALPHA    1
@@ -474,7 +437,7 @@
 #define PNG_LIBPNG_BUILD_RC       3
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
-
+  
 /* Release-Specific Flags */
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with
                                        PNG_LIBPNG_BUILD_STABLE only */
@@ -483,22 +446,21 @@
 #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
                                        PNG_LIBPNG_BUILD_PRIVATE */
 
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
+#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
 
 /* 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 10241 /* 1.2.41 */
+ * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release */
+#define PNG_LIBPNG_VER 10041 /* 1.0.41 */
 
 #ifndef PNG_VERSION_INFO_ONLY
-/* Include the compression library's header */
+/* include the compression library's header */
 #include "zlib.h"
 #endif
 
-/* Include all user configurable info, including optional assembler routines */
+/* include all user configurable info, including optional assembler routines */
 #include "pngconf.h"
 
 /*
@@ -506,12 +468,12 @@
 /* Ref MSDN: Private as priority over Special
  * VS_FF_PRIVATEBUILD File *was not* built using standard release
  * procedures. If this value is given, the StringFileInfo block must
- * contain a PrivateBuild string.
+ * contain a PrivateBuild string. 
  *
  * VS_FF_SPECIALBUILD File *was* built by the original company using
  * standard release procedures but is a variation of the standard
  * file of the same version number. If this value is given, the
- * StringFileInfo block must contain a SpecialBuild string.
+ * StringFileInfo block must contain a SpecialBuild string. 
  */
 
 #if defined(PNG_USER_PRIVATEBUILD)
@@ -573,14 +535,14 @@ extern "C" {
 #define png_write_status_ptr_NULL NULL
 #endif
 
-/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
+/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
 #if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
 /* Version information for C files, stored in png.c.  This had better match
  * the version above.
  */
 #ifdef PNG_USE_GLOBAL_ARRAYS
 PNG_EXPORT_VAR (PNG_CONST char) png_libpng_ver[18];
-  /* Need room for 99.99.99beta99z */
+  /* need room for 99.99.99beta99z */
 #else
 #define png_libpng_ver png_get_header_ver(NULL)
 #endif
@@ -699,8 +661,7 @@ typedef png_text FAR * FAR * png_textpp;
 #endif
 
 /* Supported compression types for text in PNG files (tEXt, and zTXt).
- * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed.
- */
+ * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */
 #define PNG_TEXT_COMPRESSION_NONE_WR -3
 #define PNG_TEXT_COMPRESSION_zTXt_WR -2
 #define PNG_TEXT_COMPRESSION_NONE    -1
@@ -727,8 +688,7 @@ typedef struct png_time_struct
 typedef png_time FAR * png_timep;
 typedef png_time FAR * FAR * png_timepp;
 
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
 /* png_unknown_chunk is a structure to hold queued chunks for which there is
  * no specific support.  The idea is that we can use this to queue
  * up private chunks for output even though the library doesn't actually
@@ -790,7 +750,7 @@ typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp;
  */
 typedef struct png_info_struct
 {
-   /* The following are necessary for every PNG file */
+   /* the following are necessary for every PNG file */
    png_uint_32 width;       /* width of image in pixels (from IHDR) */
    png_uint_32 height;      /* height of image in pixels (from IHDR) */
    png_uint_32 valid;       /* valid chunk data (see PNG_INFO_ below) */
@@ -963,9 +923,8 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
    png_uint_32 free_me;     /* flags items libpng is responsible for freeing */
 #endif
 
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \
- defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
-   /* Storage for unknown chunks that the library doesn't recognize. */
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+   /* storage for unknown chunks that the library doesn't recognize. */
    png_unknown_chunkp unknown_chunks;
    png_size_t unknown_chunks_num;
 #endif
@@ -980,7 +939,7 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
 #endif
 
 #if defined(PNG_sPLT_SUPPORTED)
-   /* Data on sPLT chunks (there may be more than one). */
+   /* data on sPLT chunks (there may be more than one). */
    png_sPLT_tp splt_palettes;
    png_uint_32 splt_palettes_num;
 #endif
@@ -1195,10 +1154,7 @@ typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp));
 #define PNG_TRANSFORM_SWAP_ALPHA     0x0100    /* read and write */
 #define PNG_TRANSFORM_SWAP_ENDIAN    0x0200    /* read and write */
 #define PNG_TRANSFORM_INVERT_ALPHA   0x0400    /* read and write */
-#define PNG_TRANSFORM_STRIP_FILLER   0x0800    /* write only, deprecated */
-/* Added to libpng-1.2.34 */
-#define PNG_TRANSFORM_STRIP_FILLER_BEFORE 0x0800  /* write only */
-#define PNG_TRANSFORM_STRIP_FILLER_AFTER  0x1000  /* write only */
+#define PNG_TRANSFORM_STRIP_FILLER   0x0800    /* WRITE only */
 
 /* Flags for MNG supported features */
 #define PNG_FLAG_MNG_EMPTY_PLTE     0x01
@@ -1315,7 +1271,7 @@ struct png_struct_def
 #endif /* PNG_bKGD_SUPPORTED */
 
 #if defined(PNG_WRITE_FLUSH_SUPPORTED)
-   png_flush_ptr output_flush_fn; /* Function for flushing output */
+   png_flush_ptr output_flush_fn;/* Function for flushing output */
    png_uint_32 flush_dist;    /* how many rows apart to flush, 0 - no flush */
    png_uint_32 flush_rows;    /* number of rows written since last flush */
 #endif
@@ -1413,7 +1369,7 @@ struct png_struct_def
 /* New members added in libpng-1.0.6 */
 
 #ifdef PNG_FREE_ME_SUPPORTED
-   png_uint_32 free_me;   /* flags items libpng is responsible for freeing */
+   png_uint_32 free_me;       /* flags items libpng is responsible for freeing */
 #endif
 
 #if defined(PNG_USER_CHUNKS_SUPPORTED)
@@ -1421,7 +1377,7 @@ struct png_struct_def
    png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
 #endif
 
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
    int num_chunk_list;
    png_bytep chunk_list;
 #endif
@@ -1439,7 +1395,7 @@ struct png_struct_def
 #if defined(PNG_MNG_FEATURES_SUPPORTED) || \
     defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
     defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-/* Changed from png_byte to png_uint_32 at version 1.2.0 */
+/* changed from png_byte to png_uint_32 at version 1.2.0 */
 #ifdef PNG_1_0_X
    png_byte mng_features_permitted;
 #else
@@ -1475,21 +1431,21 @@ struct png_struct_def
 
 /* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
 #ifdef PNG_USER_MEM_SUPPORTED
-   png_voidp mem_ptr;            /* user supplied struct for mem functions */
-   png_malloc_ptr malloc_fn;     /* function for allocating memory */
-   png_free_ptr free_fn;         /* function for freeing memory */
+   png_voidp mem_ptr;                /* user supplied struct for mem functions */
+   png_malloc_ptr malloc_fn;         /* function for allocating memory */
+   png_free_ptr free_fn;             /* function for freeing memory */
 #endif
 
 /* New member added in libpng-1.0.13 and 1.2.0 */
-   png_bytep big_row_buf;        /* buffer to save current (unfiltered) row */
+   png_bytep big_row_buf;         /* buffer to save current (unfiltered) row */
 
 #if defined(PNG_READ_DITHER_SUPPORTED)
 /* The following three members were added at version 1.0.14 and 1.2.4 */
-   png_bytep dither_sort;        /* working sort array */
-   png_bytep index_to_palette;   /* where the original index currently is */
-                                 /* in the palette */
-   png_bytep palette_to_index;   /* which original index points to this */
-                                 /* palette color */
+   png_bytep dither_sort;            /* working sort array */
+   png_bytep index_to_palette;       /* where the original index currently is */
+                                     /* in the palette */
+   png_bytep palette_to_index;       /* which original index points to this */
+                                     /* palette color */
 #endif
 
 /* New members added in libpng-1.0.16 and 1.2.6 */
@@ -1502,7 +1458,7 @@ struct png_struct_def
 
 /* New member added in libpng-1.0.25 and 1.2.17 */
 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
-   /* Storage for unknown chunk that the library doesn't recognize. */
+   /* storage for unknown chunk that the library doesn't recognize. */
    png_unknown_chunk unknown_chunk;
 #endif
 
@@ -1518,7 +1474,7 @@ 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_2_41beta05;
+typedef png_structp version_1_0_41;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -1622,7 +1578,7 @@ extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 
 #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-/* Read the information before the actual image data. */
+/* read the information before the actual image data. */
 extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 #endif
@@ -1635,11 +1591,11 @@ extern PNG_EXPORT(png_charp,png_convert_to_rfc1123)
 #if !defined(_WIN32_WCE)
 /* "time.h" functions are not supported on WindowsCE */
 #if defined(PNG_WRITE_tIME_SUPPORTED)
-/* Convert from a struct tm to png_time */
+/* convert from a struct tm to png_time */
 extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime,
    struct tm FAR * ttime));
 
-/* Convert from time_t to png_time.  Uses gmtime() */
+/* convert from time_t to png_time.  Uses gmtime() */
 extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime,
    time_t ttime));
 #endif /* PNG_WRITE_tIME_SUPPORTED */
@@ -1759,7 +1715,7 @@ extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr,
 #endif
 
 #if defined(PNG_READ_16_TO_8_SUPPORTED)
-/* Strip the second byte of information from a 16-bit depth file. */
+/* strip the second byte of information from a 16-bit depth file. */
 extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr));
 #endif
 
@@ -1795,74 +1751,74 @@ extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows));
 extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr));
 #endif
 
-/* Optional update palette with requested transformations */
+/* optional update palette with requested transformations */
 extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr));
 
-/* Optional call to update the users info structure */
+/* optional call to update the users info structure */
 extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 
 #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-/* Read one or more rows of image data. */
+/* read one or more rows of image data. */
 extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr,
    png_bytepp row, png_bytepp display_row, png_uint_32 num_rows));
 #endif
 
 #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-/* Read a row of data. */
+/* read a row of data. */
 extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr,
    png_bytep row,
    png_bytep display_row));
 #endif
 
 #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-/* Read the whole image into memory at once. */
+/* read the whole image into memory at once. */
 extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr,
    png_bytepp image));
 #endif
 
-/* Write a row of image data */
+/* write a row of image data */
 extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr,
    png_bytep row));
 
-/* Write a few rows of image data */
+/* write a few rows of image data */
 extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr,
    png_bytepp row, png_uint_32 num_rows));
 
-/* Write the image data */
+/* write the image data */
 extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr,
    png_bytepp image));
 
-/* Writes the end of the PNG file. */
+/* writes the end of the PNG file. */
 extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 
 #ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED
-/* Read the end of the PNG file. */
+/* read the end of the PNG file. */
 extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 #endif
 
-/* Free any memory associated with the png_info_struct */
+/* free any memory associated with the png_info_struct */
 extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr,
    png_infopp info_ptr_ptr));
 
-/* Free any memory associated with the png_struct and the png_info_structs */
+/* free any memory associated with the png_struct and the png_info_structs */
 extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp
    png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
 
-/* Free all memory used by the read (old method - NOT DLL EXPORTED) */
+/* free all memory used by the read (old method - NOT DLL EXPORTED) */
 extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr,
    png_infop end_info_ptr));
 
-/* Free any memory associated with the png_struct and the png_info_structs */
+/* free any memory associated with the png_struct and the png_info_structs */
 extern PNG_EXPORT(void,png_destroy_write_struct)
    PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr));
 
-/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
+/* free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */
 extern void png_write_destroy PNGARG((png_structp png_ptr));
 
-/* Set the libpng method of handling chunk CRC errors */
+/* set the libpng method of handling chunk CRC errors */
 extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
    int crit_action, int ancil_action));
 
@@ -1890,7 +1846,7 @@ extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
  * header file (zlib.h) for an explination of the compression functions.
  */
 
-/* Set the filtering method(s) used by libpng.  Currently, the only valid
+/* set the filtering method(s) used by libpng.  Currently, the only valid
  * value for "method" is 0.
  */
 extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method,
@@ -2018,11 +1974,6 @@ extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr));
  * If buffered output is not used, then output_flush_fn can be set to NULL.
  * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time
  * output_flush_fn will be ignored (and thus can be NULL).
- * It is probably a mistake to use NULL for output_flush_fn if
- * write_data_fn is not also NULL unless you have built libpng with
- * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's
- * default flush function, which uses the standard *FILE structure, will
- * be used.
  */
 extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr,
    png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
@@ -2087,15 +2038,15 @@ extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr,
    png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
    png_progressive_end_ptr end_fn));
 
-/* Returns the user pointer associated with the push read functions */
+/* returns the user pointer associated with the push read functions */
 extern PNG_EXPORT(png_voidp,png_get_progressive_ptr)
    PNGARG((png_structp png_ptr));
 
-/* Function to be called when data becomes available */
+/* function to be called when data becomes available */
 extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_bytep buffer, png_size_t buffer_size));
 
-/* Function that combines rows.  Not very much different than the
+/* function that combines rows.  Not very much different than the
  * png_combine_row() call.  Is this even used?????
  */
 extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr,
@@ -2113,7 +2064,7 @@ extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr,
    png_uint_32 size));
 #endif
 
-/* Frees a pointer allocated by png_malloc() */
+/* frees a pointer allocated by png_malloc() */
 extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr));
 
 #if defined(PNG_1_0_X)
@@ -2130,12 +2081,11 @@ extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_uint_32 free_me, int num));
 #ifdef PNG_FREE_ME_SUPPORTED
 /* Reassign responsibility for freeing existing data, whether allocated
- * by libpng or by the application
- */
+ * by libpng or by the application */
 extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr,
    png_infop info_ptr, int freer, png_uint_32 mask));
 #endif
-/* Assignments for png_data_freer */
+/* assignments for png_data_freer */
 #define PNG_DESTROY_WILL_FREE_DATA 1
 #define PNG_SET_WILL_FREE_DATA 1
 #define PNG_USER_WILL_FREE_DATA 2
@@ -2219,13 +2169,11 @@ png_infop info_ptr));
 
 #if defined(PNG_INFO_IMAGE_SUPPORTED)
 /* Returns row_pointers, which is an array of pointers to scanlines that was
- * returned from png_read_png().
- */
+returned from png_read_png(). */
 extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr,
 png_infop info_ptr));
 /* Set row_pointers, which is an array of pointers to scanlines for use
- * by png_write_png().
- */
+by png_write_png(). */
 extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_bytepp row_pointers));
 #endif
@@ -2526,8 +2474,8 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
 #endif
 #endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */
 
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-/* Provide a list of chunks and how they are to be handled, if the built-in
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+/* provide a list of chunks and how they are to be handled, if the built-in
    handling or default unknown chunk handling is not desired.  Any chunks not
    listed will be handled in the default manner.  The IHDR and IEND chunks
    must not be listed.
@@ -2538,10 +2486,6 @@ extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr,
 */
 extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp
    png_ptr, int keep, png_bytep chunk_list, int num_chunks));
-PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
-   chunk_name));
-#endif
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
 extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr,
    png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns));
 extern PNG_EXPORT(void, png_set_unknown_chunk_location)
@@ -2549,11 +2493,14 @@ extern PNG_EXPORT(void, png_set_unknown_chunk_location)
 extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp
    png_ptr, png_infop info_ptr, png_unknown_chunkpp entries));
 #endif
+#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep
+   chunk_name));
+#endif
 
 /* Png_free_data() will turn off the "valid" flag for anything it frees.
- * If you need to turn it off for a chunk that your application has freed,
- * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK);
- */
+   If you need to turn it off for a chunk that your application has freed,
+   you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); */
 extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr,
    png_infop info_ptr, int mask));
 
@@ -2579,90 +2526,34 @@ extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr,
 #if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
 #include <crtdbg.h>
 #if (PNG_DEBUG > 1)
-#ifndef _DEBUG
-#  define _DEBUG
-#endif
-#ifndef png_debug
-#define png_debug(l,m)  _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
-#endif
-#ifndef png_debug1
-#define png_debug1(l,m,p1)  _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
-#endif
-#ifndef png_debug2
-#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
-#endif
+#define png_debug(l,m)  _RPT0(_CRT_WARN,m)
+#define png_debug1(l,m,p1)  _RPT1(_CRT_WARN,m,p1)
+#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m,p1,p2)
 #endif
 #else /* PNG_DEBUG_FILE || !_MSC_VER */
 #ifndef PNG_DEBUG_FILE
 #define PNG_DEBUG_FILE stderr
 #endif /* PNG_DEBUG_FILE */
-
 #if (PNG_DEBUG > 1)
-/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on non-ISO
- * compilers.
- */
-#  ifdef __STDC__
-#    ifndef png_debug
-#      define png_debug(l,m) \
-       { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
-       }
-#    endif
-#    ifndef png_debug1
-#      define png_debug1(l,m,p1) \
-       { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
-       }
-#    endif
-#    ifndef png_debug2
-#      define png_debug2(l,m,p1,p2) \
-       { \
-       int num_tabs=l; \
-       fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
-       }
-#    endif
-#  else /* __STDC __ */
-#    ifndef png_debug
-#      define png_debug(l,m) \
-       { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format); \
-       }
-#    endif
-#    ifndef png_debug1
-#      define png_debug1(l,m,p1) \
-       { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format,p1); \
-       }
-#    endif
-#    ifndef png_debug2
-#      define png_debug2(l,m,p1,p2) \
-       { \
-       int num_tabs=l; \
-       char format[256]; \
-       snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
-         (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
-         m,PNG_STRING_NEWLINE); \
-       fprintf(PNG_DEBUG_FILE,format,p1,p2); \
-       }
-#    endif
-#  endif /* __STDC __ */
+#define png_debug(l,m) \
+{ \
+     int num_tabs=l; \
+     fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \
+       (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
+}
+#define png_debug1(l,m,p1) \
+{ \
+     int num_tabs=l; \
+     fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \
+       (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
+}
+#define png_debug2(l,m,p1,p2) \
+{ \
+     int num_tabs=l; \
+     fprintf(PNG_DEBUG_FILE,"%s"m,(num_tabs==1 ? "\t" : \
+       (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
+}
 #endif /* (PNG_DEBUG > 1) */
-
 #endif /* _MSC_VER */
 #endif /* (PNG_DEBUG > 0) */
 #endif /* PNG_DEBUG */
@@ -2757,17 +2648,17 @@ extern PNG_EXPORT(void,png_set_mmx_thresholds)
 #if !defined(PNG_1_0_X)
 /* png.c, pnggccrd.c, or pngvcrd.c */
 extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
-#endif /* PNG_1_0_X */
 #endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
 
 /* Strip the prepended error numbers ("#nnn ") from error and warning
- * messages before passing them to the error or warning handler.
- */
+ * messages before passing them to the error or warning handler. */
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
 extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
    png_ptr, png_uint_32 strip_mode));
 #endif
 
+#endif /* PNG_1_0_X */
+
 /* Added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
 extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp
@@ -2779,9 +2670,7 @@ extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
 #endif
 
 
-/* Maintainer: Put new public prototypes here ^, in libpng.3, and in
- * project defs
- */
+/* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
@@ -2810,7 +2699,7 @@ extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp
                         (png_uint_32)(alpha)) + (png_uint_32)32768L);        \
        (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
 
-#else  /* Standard method using integer division */
+#else  /* standard method using integer division */
 
 #  define png_composite(composite, fg, alpha, bg)                            \
      (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) +    \
@@ -2893,7 +2782,7 @@ extern PNG_EXPORT(void,png_save_uint_16)
 #define PNG_HAVE_PNG_SIGNATURE    0x1000
 #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
 
-/* Flags for the transformations the PNG library does on the image data */
+/* flags for the transformations the PNG library does on the image data */
 #define PNG_BGR                0x0001
 #define PNG_INTERLACE          0x0002
 #define PNG_PACK               0x0004
@@ -2927,7 +2816,7 @@ extern PNG_EXPORT(void,png_save_uint_16)
                        /*  0x20000000L  unused */
                        /*  0x40000000L  unused */
 
-/* Flags for png_create_struct */
+/* flags for png_create_struct */
 #define PNG_STRUCT_PNG   0x0001
 #define PNG_STRUCT_INFO  0x0002
 
@@ -2937,7 +2826,7 @@ extern PNG_EXPORT(void,png_save_uint_16)
 #define PNG_COST_SHIFT 3
 #define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
 
-/* Flags for the png_ptr->flags rather than declaring a byte for each one */
+/* flags for the png_ptr->flags rather than declaring a byte for each one */
 #define PNG_FLAG_ZLIB_CUSTOM_STRATEGY     0x0001
 #define PNG_FLAG_ZLIB_CUSTOM_LEVEL        0x0002
 #define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL    0x0004
@@ -2979,7 +2868,7 @@ extern PNG_EXPORT(void,png_save_uint_16)
 #define PNG_FLAG_CRC_MASK           (PNG_FLAG_CRC_ANCILLARY_MASK | \
                                      PNG_FLAG_CRC_CRITICAL_MASK)
 
-/* Save typing and make code easier to understand */
+/* save typing and make code easier to understand */
 
 #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
    abs((int)((c1).green) - (int)((c2).green)) + \
@@ -2992,16 +2881,15 @@ extern PNG_EXPORT(void,png_save_uint_16)
     (( ((width) * ((png_uint_32)(pixel_bits))) + 7) >> 3) )
 
 /* PNG_OUT_OF_RANGE returns true if value is outside the range
- * ideal-delta..ideal+delta.  Each argument is evaluated twice.
- * "ideal" and "delta" should be constants, normally simple
- * integers, "value" a variable. Added to libpng-1.2.6 JB
- */
+   ideal-delta..ideal+delta.  Each argument is evaluated twice.
+   "ideal" and "delta" should be constants, normally simple
+   integers, "value" a variable. Added to libpng-1.2.6 JB */
 #define PNG_OUT_OF_RANGE(value, ideal, delta) \
         ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
 
-/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */
+/* variables declared in png.c - only it needs to define PNG_NO_EXTERN */
 #if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN)
-/* Place to hold the signature string for a PNG file. */
+/* place to hold the signature string for a PNG file. */
 #ifdef PNG_USE_GLOBAL_ARRAYS
    PNG_EXPORT_VAR (PNG_CONST png_byte FARDATA) png_sig[8];
 #else
@@ -3120,8 +3008,7 @@ PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr));
 #endif
 
 /* Next four functions are used internally as callbacks.  PNGAPI is required
- * but not PNG_EXPORT.  PNGAPI added at libpng version 1.2.3.
- */
+ * but not PNG_EXPORT.  PNGAPI added at libpng version 1.2.3. */
 
 PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr,
    png_bytep data, png_size_t length));
@@ -3186,10 +3073,10 @@ PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr,
 PNG_EXTERN void png_flush PNGARG((png_structp png_ptr));
 #endif
 
-/* Simple function to write the signature */
+/* simple function to write the signature */
 PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr));
 
-/* Write various chunks */
+/* write various chunks */
 
 /* Write the IHDR chunk, and update the png_struct with the necessary
  * information.
@@ -3341,12 +3228,12 @@ PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr));
 #endif
 
-/* Combine a row of data, dealing with alpha, etc. if requested */
+/* combine a row of data, dealing with alpha, etc. if requested */
 PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row,
    int mask));
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED)
-/* Expand an interlaced row */
+/* expand an interlaced row */
 /* OLD pre-1.0.9 interface:
 PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info,
    png_bytep row, int pass, png_uint_32 transformations));
@@ -3357,12 +3244,12 @@ PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr));
 /* GRR TO DO (2.0 or whenever):  simplify other internal calling interfaces */
 
 #if defined(PNG_WRITE_INTERLACING_SUPPORTED)
-/* Grab pixels out of a row for an interlaced pass */
+/* grab pixels out of a row for an interlaced pass */
 PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info,
    png_bytep row, int pass));
 #endif
 
-/* Unfilter a row */
+/* unfilter a row */
 PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr,
    png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter));
 
@@ -3373,16 +3260,16 @@ PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr,
 /* Write out the filtered row. */
 PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr,
    png_bytep filtered_row));
-/* Finish a row while reading, dealing with interlacing passes, etc. */
+/* finish a row while reading, dealing with interlacing passes, etc. */
 PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr));
 
-/* Initialize the row buffers, etc. */
+/* initialize the row buffers, etc. */
 PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr));
-/* Optional call to update the users info structure */
+/* optional call to update the users info structure */
 PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr,
    png_infop info_ptr));
 
-/* These are the functions that do the transformations */
+/* these are the functions that do the transformations */
 #if defined(PNG_READ_FILLER_SUPPORTED)
 PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info,
    png_bytep row, png_uint_32 filler, png_uint_32 flags));
@@ -3504,7 +3391,7 @@ PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info,
  * then calls the appropriate callback for the chunk if it is valid.
  */
 
-/* Decode the IHDR chunk */
+/* decode the IHDR chunk */
 PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr,
    png_uint_32 length));
 PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr,
@@ -3603,7 +3490,7 @@ PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr,
 PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr,
    png_bytep chunk_name));
 
-/* Handle the transformations for reading and writing */
+/* handle the transformations for reading and writing */
 PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr));
 PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr));
 
@@ -3697,29 +3584,6 @@ png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type));
 /* Read the chunk header (length + type name) */
 PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr));
 
-/* Added at libpng version 1.2.34 */
-#if defined(PNG_cHRM_SUPPORTED)
-PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr,
-   png_fixed_point int_white_x, png_fixed_point int_white_y,
-   png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point
-   int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x,
-   png_fixed_point int_blue_y));
-#endif
-
-#if defined(PNG_cHRM_SUPPORTED)
-#if !defined(PNG_NO_CHECK_cHRM)
-/* Added at libpng version 1.2.34 */
-PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2,
-   unsigned long *hi_product, unsigned long *lo_product));
-#endif
-#endif
-
-/* Added at libpng version 1.2.41 */
-PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
-   png_uint_32 width, png_uint_32 height, int bit_depth,
-   int color_type, int interlace_type, int compression_type,
-   int filter_type));
-
 /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */
 
 #endif /* PNG_INTERNAL */
@@ -3729,5 +3593,5 @@ PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr,
 #endif
 
 #endif /* PNG_VERSION_INFO_ONLY */
-/* Do not put anything past this line */
+/* do not put anything past this line */
 #endif /* PNG_H */

pngconf.h

@@ -1,14 +1,11 @@
 
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng version 1.2.41beta05 - October 11, 2009
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * libpng version 1.0.41 - October 31, 2008
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
 /* Any machine specific code is near the front of this file, so if you
@@ -20,18 +17,12 @@
 #ifndef PNGCONF_H
 #define PNGCONF_H
 
-#define PNG_1_2_X
+#define PNG_1_0_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
@@ -42,7 +33,7 @@
 
 /*
  * Added at libpng-1.2.8
- *
+ *  
  * If you create a private DLL you need to define in "pngusr.h" the followings:
  * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of
  *        the DLL was built>
@@ -53,8 +44,8 @@
  *        number and must match your private DLL name>
  *  e.g. // private DLL "libpng13gx.dll"
  *       #define PNG_USER_DLLFNAME_POSTFIX "gx"
- *
- * The following macros are also at your disposal if you want to complete the
+ * 
+ * The following macros are also at your disposal if you want to complete the 
  * DLL VERSIONINFO structure.
  * - PNG_USER_VERSIONINFO_COMMENTS
  * - PNG_USER_VERSIONINFO_COMPANYNAME
@@ -150,9 +141,9 @@
  * 'Cygwin' defines/defaults:
  *   PNG_BUILD_DLL -- (ignored) building the dll
  *   (no define)   -- (ignored) building an application, linking to the dll
- *   PNG_STATIC    -- (ignored) building the static lib, or building an
+ *   PNG_STATIC    -- (ignored) building the static lib, or building an 
  *                    application that links to the static lib.
- *   ALL_STATIC    -- (ignored) building various static libs, or building an
+ *   ALL_STATIC    -- (ignored) building various static libs, or building an 
  *                    application that links to the static libs.
  * Thus,
  * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and
@@ -165,12 +156,12 @@
  *   PNG_BUILD_DLL
  *   PNG_STATIC
  *   (nothing) == PNG_USE_DLL
- *
+ * 
  * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent
- *   of auto-import in binutils, we no longer need to worry about
+ *   of auto-import in binutils, we no longer need to worry about 
  *   __declspec(dllexport) / __declspec(dllimport) and friends.  Therefore,
  *   we don't need to worry about PNG_STATIC or ALL_STATIC when it comes
- *   to __declspec() stuff.  However, we DO need to worry about
+ *   to __declspec() stuff.  However, we DO need to worry about 
  *   PNG_BUILD_DLL and PNG_STATIC because those change some defaults
  *   such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed.
  */
@@ -214,8 +205,8 @@
 #        if !defined(PNG_DLL)
 #          define PNG_DLL
 #        endif
-#      endif
-#    endif
+#      endif  
+#    endif  
 #  endif
 #endif
 
@@ -236,8 +227,6 @@
 #  include <windows.h>
    /* Console I/O functions are not supported on WindowsCE */
 #  define PNG_NO_CONSOLE_IO
-   /* abort() may not be supported on some/all Windows CE platforms */
-#  define PNG_ABORT() exit(-1)
 #  ifdef PNG_DEBUG
 #    undef PNG_DEBUG
 #  endif
@@ -317,29 +306,21 @@
 #ifdef PNG_SETJMP_SUPPORTED
 /* This is an attempt to force a single setjmp behaviour on Linux.  If
  * the X config stuff didn't define _BSD_SOURCE we wouldn't need this.
- *
- * You can bypass this test if you know that your application uses exactly
- * the same setjmp.h that was included when libpng was built.  Only define
- * PNG_SKIP_SETJMP_CHECK while building your application, prior to the
- * application's '#include "png.h"'. Don't define PNG_SKIP_SETJMP_CHECK
- * while building a separate libpng library for general use.
  */
 
-#  ifndef PNG_SKIP_SETJMP_CHECK
-#    ifdef __linux__
-#      ifdef _BSD_SOURCE
-#        define PNG_SAVE_BSD_SOURCE
-#        undef _BSD_SOURCE
-#      endif
-#      ifdef _SETJMP_H
-       /* If you encounter a compiler error here, see the explanation
-        * near the end of INSTALL.
-        */
-           __pngconf.h__ in libpng already includes setjmp.h;
-           __dont__ include it again.;
-#      endif
-#    endif /* __linux__ */
-#  endif /* PNG_SKIP_SETJMP_CHECK */
+#  ifdef __linux__
+#    ifdef _BSD_SOURCE
+#      define PNG_SAVE_BSD_SOURCE
+#      undef _BSD_SOURCE
+#    endif
+#    ifdef _SETJMP_H
+     /* If you encounter a compiler error here, see the explanation
+      * near the end of INSTALL.
+      */
+         __pngconf.h__ already includes setjmp.h;
+         __dont__ include it again.;
+#    endif
+#  endif /* __linux__ */
 
    /* include setjmp.h for error handling */
 #  include <setjmp.h>
@@ -490,20 +471,18 @@
  * iTXt support was added.  iTXt support was turned off by default through
  * libpng-1.2.x, to support old apps that malloc the png_text structure
  * instead of calling png_set_text() and letting libpng malloc it.  It
- * will be turned on by default in libpng-1.4.0.
+ * was turned on by default in libpng-1.3.0.
  */
 
 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
-#  ifndef PNG_iTXt_SUPPORTED
-#    ifndef PNG_NO_iTXt_SUPPORTED
-#      define PNG_NO_iTXt_SUPPORTED
-#    endif
-#    ifndef PNG_NO_READ_iTXt
-#      define PNG_NO_READ_iTXt
-#    endif
-#    ifndef PNG_NO_WRITE_iTXt
-#      define PNG_NO_WRITE_iTXt
-#    endif
+#  ifndef PNG_NO_iTXt_SUPPORTED
+#    define PNG_NO_iTXt_SUPPORTED
+#  endif
+#  ifndef PNG_NO_READ_iTXt
+#    define PNG_NO_READ_iTXt
+#  endif
+#  ifndef PNG_NO_WRITE_iTXt
+#    define PNG_NO_WRITE_iTXt
 #  endif
 #endif
 
@@ -526,7 +505,6 @@
 #  define PNG_NO_FREE_ME
 #  define PNG_NO_READ_UNKNOWN_CHUNKS
 #  define PNG_NO_WRITE_UNKNOWN_CHUNKS
-#  define PNG_NO_HANDLE_AS_UNKNOWN
 #  define PNG_NO_READ_USER_CHUNKS
 #  define PNG_NO_READ_iCCP
 #  define PNG_NO_WRITE_iCCP
@@ -556,7 +534,7 @@
 #  define PNG_FREE_ME_SUPPORTED
 #endif
 
-#ifdef PNG_READ_SUPPORTED
+#if defined(PNG_READ_SUPPORTED)
 
 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
       !defined(PNG_NO_READ_TRANSFORMS)
@@ -644,7 +622,7 @@
 
 #endif /* PNG_READ_SUPPORTED */
 
-#ifdef PNG_WRITE_SUPPORTED
+#if defined(PNG_WRITE_SUPPORTED)
 
 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
     !defined(PNG_NO_WRITE_TRANSFORMS)
@@ -747,7 +725,7 @@
 #  define PNG_EASY_ACCESS_SUPPORTED
 #endif
 
-/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
+/* 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
 */
@@ -789,7 +767,6 @@
 #endif
 /* end of obsolete code to be removed from libpng-1.4.0 */
 
-/* Added at libpng-1.2.0 */
 #if !defined(PNG_1_0_X)
 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
 #  define PNG_USER_MEM_SUPPORTED
@@ -797,12 +774,12 @@
 #endif /* PNG_1_0_X */
 
 /* Added at libpng-1.2.6 */
-#ifndef PNG_1_0_X
-#  ifndef PNG_SET_USER_LIMITS_SUPPORTED
-#    ifndef PNG_NO_SET_USER_LIMITS
-#      define PNG_SET_USER_LIMITS_SUPPORTED
-#    endif
-#  endif
+#if !defined(PNG_1_0_X)
+#ifndef PNG_SET_USER_LIMITS_SUPPORTED
+#if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
+#  define PNG_SET_USER_LIMITS_SUPPORTED
+#endif
+#endif
 #endif /* PNG_1_0_X */
 
 /* Added at libpng-1.0.16 and 1.2.6.  To accept all valid PNGS no matter
@@ -815,11 +792,6 @@
 #  define PNG_USER_HEIGHT_MAX 1000000L
 #endif
 
-/* Added at libpng-1.2.34 and 1.4.0 */
-#ifndef PNG_STRING_NEWLINE
-#define PNG_STRING_NEWLINE "\n"
-#endif
-
 /* These are currently experimental features, define them if you want */
 
 /* very little testing */
@@ -947,22 +919,14 @@
 #  define PNG_READ_zTXt_SUPPORTED
 #  define PNG_zTXt_SUPPORTED
 #endif
-#ifndef PNG_NO_READ_OPT_PLTE
-#  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
-#endif                      /* optional PLTE chunk in RGB and RGBA images */
-#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
-    defined(PNG_READ_zTXt_SUPPORTED)
-#  define PNG_READ_TEXT_SUPPORTED
-#  define PNG_TEXT_SUPPORTED
-#endif
-
-#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
-
 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
 #  define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
 #  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
 #    define PNG_UNKNOWN_CHUNKS_SUPPORTED
 #  endif
+#  ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#  endif
 #endif
 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
      defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
@@ -975,14 +939,17 @@
 #    undef PNG_NO_HANDLE_AS_UNKNOWN
 #  endif
 #endif
-
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-#  endif
+#ifndef PNG_NO_READ_OPT_PLTE
+#  define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
+#endif                      /* optional PLTE chunk in RGB and RGBA images */
+#if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
+    defined(PNG_READ_zTXt_SUPPORTED)
+#  define PNG_READ_TEXT_SUPPORTED
+#  define PNG_TEXT_SUPPORTED
 #endif
 
-#ifdef PNG_WRITE_SUPPORTED
+#endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
+
 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
 
 #ifdef PNG_NO_WRITE_TEXT
@@ -1094,6 +1061,17 @@
 #    define PNG_zTXt_SUPPORTED
 #  endif
 #endif
+#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
+#  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
+#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
+#  endif
+#  ifndef PNG_NO_HANDLE_AS_UNKNOWN
+#     ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#       define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
+#     endif
+#  endif
+#endif
 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
     defined(PNG_WRITE_zTXt_SUPPORTED)
 #  define PNG_WRITE_TEXT_SUPPORTED
@@ -1104,20 +1082,6 @@
 
 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
 
-#ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
-#  define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
-#  ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
-#    define PNG_UNKNOWN_CHUNKS_SUPPORTED
-#  endif
-#endif
-
-#ifndef PNG_NO_HANDLE_AS_UNKNOWN
-#  ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-#    define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-#  endif
-#endif
-#endif /* PNG_WRITE_SUPPORTED */
-
 /* Turn this off to disable png_read_png() and
  * png_write_png() and leave the row_pointers member
  * out of the info structure.
@@ -1263,7 +1227,7 @@ typedef char            FAR * FAR * FAR * png_charppp;
 
 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
 /* SPC -  Is this stuff deprecated? */
-/* It'll be removed as of libpng-1.4.0 - GR-P */
+/* It'll be removed as of libpng-1.3.0 - GR-P */
 /* libpng typedefs for types in zlib. If zlib changes
  * or another compression library is used, then change these.
  * Eliminates need to change all the source files.
@@ -1336,7 +1300,7 @@ typedef z_stream FAR *  png_zstreamp;
 #  define PNGAPI __cdecl
 #  undef PNG_IMPEXP
 #  define PNG_IMPEXP
-#endif
+#endif  
 
 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
  * you may get warnings regarding the linkage of png_zalloc and png_zfree.

pngerror.c

@@ -1,15 +1,12 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * Last changed in libpng 1.2.37 [June 4, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all error handling.  Users who
  * need special error handling are expected to write replacement functions
  * and use png_set_error_fn() to use those functions.  See the instructions
@@ -47,7 +44,7 @@ png_error(png_structp png_ptr, png_const_charp error_message)
      {
        if (*error_message == '#')
        {
-           /* Strip "#nnnn " from beginning of error message. */
+         /* Strip "#nnnn " from beginning of error message. */
            int offset;
            for (offset = 1; offset<15; offset++)
               if (error_message[offset] == ' ')
@@ -119,9 +116,9 @@ png_warning(png_structp png_ptr, png_const_charp warning_message)
                   break;
        }
      }
+     if (png_ptr != NULL && png_ptr->warning_fn != NULL)
+        (*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
    }
-   if (png_ptr != NULL && png_ptr->warning_fn != NULL)
-      (*(png_ptr->warning_fn))(png_ptr, warning_message + offset);
    else
       png_default_warning(png_ptr, warning_message + offset);
 }
@@ -220,7 +217,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
 #ifdef PNG_ERROR_NUMBERS_SUPPORTED
    if (*error_message == '#')
    {
-     /* Strip "#nnnn " from beginning of error message. */
+     /* Strip "#nnnn " from beginning of warning message. */
      int offset;
      char error_number[16];
      for (offset = 0; offset<15; offset++)
@@ -232,23 +229,15 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
      if ((offset > 1) && (offset < 15))
      {
        error_number[offset - 1] = '\0';
-       fprintf(stderr, "libpng error no. %s: %s",
-          error_number, error_message + offset + 1);
-       fprintf(stderr, PNG_STRING_NEWLINE);
+       fprintf(stderr, "libpng error no. %s: %s\n", error_number,
+          error_message + offset + 1);
      }
      else
-     {
-       fprintf(stderr, "libpng error: %s, offset=%d",
-          error_message, offset);
-       fprintf(stderr, PNG_STRING_NEWLINE);
-     }
+       fprintf(stderr, "libpng error: %s, offset=%d\n", error_message, offset);
    }
    else
 #endif
-   {
-      fprintf(stderr, "libpng error: %s", error_message);
-      fprintf(stderr, PNG_STRING_NEWLINE);
-   }
+   fprintf(stderr, "libpng error: %s\n", error_message);
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
@@ -268,7 +257,7 @@ png_default_error(png_structp png_ptr, png_const_charp error_message)
    PNG_ABORT();
 #endif
 #ifdef PNG_NO_CONSOLE_IO
-   error_message = error_message; /* Make compiler happy */
+   error_message = error_message; /* make compiler happy */
 #endif
 }
 
@@ -296,27 +285,19 @@ png_default_warning(png_structp png_ptr, png_const_charp warning_message)
      if ((offset > 1) && (offset < 15))
      {
        warning_number[offset + 1] = '\0';
-       fprintf(stderr, "libpng warning no. %s: %s",
-          warning_number, warning_message + offset);
-       fprintf(stderr, PNG_STRING_NEWLINE);
+       fprintf(stderr, "libpng warning no. %s: %s\n", warning_number,
+          warning_message + offset);
      }
      else
-     {
-       fprintf(stderr, "libpng warning: %s",
-          warning_message);
-       fprintf(stderr, PNG_STRING_NEWLINE);
-     }
+       fprintf(stderr, "libpng warning: %s\n", warning_message);
    }
    else
 #  endif
-   {
-     fprintf(stderr, "libpng warning: %s", warning_message);
-     fprintf(stderr, PNG_STRING_NEWLINE);
-   }
+     fprintf(stderr, "libpng warning: %s\n", warning_message);
 #else
-   warning_message = warning_message; /* Make compiler happy */
+   warning_message = warning_message; /* make compiler happy */
 #endif
-   png_ptr = png_ptr; /* Make compiler happy */
+   png_ptr = png_ptr; /* make compiler happy */
 }
 #endif /* PNG_NO_WARNINGS */
 

pnggccrd.c

@@ -17,9 +17,9 @@ int PNGAPI
 png_dummy_mmx_support(void)
 {
    int result;
-#ifdef PNG_MMX_CODE_SUPPORTED  // superfluous, but what the heck
+#if defined(PNG_MMX_CODE_SUPPORTED)  // superfluous, but what the heck
     __asm__ __volatile__ (
-#ifdef __x86_64__
+#if defined(__x86_64__)
         "pushq %%rbx          \n\t"  // rbx gets clobbered by CPUID instruction
         "pushq %%rcx          \n\t"  // so does rcx...
         "pushq %%rdx          \n\t"  // ...and rdx (but rcx & rdx safe on Linux)
@@ -71,7 +71,7 @@ png_dummy_mmx_support(void)
     "0:                       \n\t"  // .NOT_SUPPORTED: target label for jump instructions
         "movl $0, %%eax       \n\t"  // set return value to 0
     "1:                       \n\t"  // .RETURN: target label for jump instructions
-#ifdef __x86_64__
+#if defined(__x86_64__)
         "popq %%rdx           \n\t"  // restore rdx
         "popq %%rcx           \n\t"  // restore rcx
         "popq %%rbx           \n\t"  // restore rbx

pngget.c

@@ -1,15 +1,11 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  */
 
 #define PNG_INTERNAL
@@ -21,7 +17,6 @@ png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
 {
    if (png_ptr != NULL && info_ptr != NULL)
       return(info_ptr->valid & flag);
-
    else
       return(0);
 }
@@ -31,31 +26,30 @@ png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
       return(info_ptr->rowbytes);
-
    else
       return(0);
 }
 
-#ifdef PNG_INFO_IMAGE_SUPPORTED
+#if defined(PNG_INFO_IMAGE_SUPPORTED)
 png_bytepp PNGAPI
 png_get_rows(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
       return(info_ptr->row_pointers);
-
    else
       return(0);
 }
 #endif
 
 #ifdef PNG_EASY_ACCESS_SUPPORTED
-/* Easy access to info, added in libpng-0.99 */
+/* easy access to info, added in libpng-0.99 */
 png_uint_32 PNGAPI
 png_get_image_width(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->width;
-
+   }
    return (0);
 }
 
@@ -63,8 +57,9 @@ png_uint_32 PNGAPI
 png_get_image_height(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->height;
-
+   }
    return (0);
 }
 
@@ -72,8 +67,9 @@ png_byte PNGAPI
 png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->bit_depth;
-
+   }
    return (0);
 }
 
@@ -81,8 +77,9 @@ png_byte PNGAPI
 png_get_color_type(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->color_type;
-
+   }
    return (0);
 }
 
@@ -90,8 +87,9 @@ png_byte PNGAPI
 png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->filter_type;
-
+   }
    return (0);
 }
 
@@ -99,8 +97,9 @@ png_byte PNGAPI
 png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->interlace_type;
-
+   }
    return (0);
 }
 
@@ -108,8 +107,9 @@ png_byte PNGAPI
 png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
+   {
       return info_ptr->compression_type;
-
+   }
    return (0);
 }
 
@@ -117,16 +117,13 @@ png_uint_32 PNGAPI
 png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_pHYs_SUPPORTED
+#if defined(PNG_pHYs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_pHYs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_x_pixels_per_meter");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_x_pixels_per_meter");
       if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
           return (0);
-
-      else
-          return (info_ptr->x_pixels_per_unit);
+      else return (info_ptr->x_pixels_per_unit);
    }
 #else
    return (0);
@@ -138,16 +135,13 @@ png_uint_32 PNGAPI
 png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_pHYs_SUPPORTED
+#if defined(PNG_pHYs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_pHYs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_y_pixels_per_meter");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_y_pixels_per_meter");
       if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
           return (0);
-
-      else
-          return (info_ptr->y_pixels_per_unit);
+      else return (info_ptr->y_pixels_per_unit);
    }
 #else
    return (0);
@@ -159,17 +153,14 @@ png_uint_32 PNGAPI
 png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_pHYs_SUPPORTED
+#if defined(PNG_pHYs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_pHYs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_pixels_per_meter");
       if (info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
          info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
           return (0);
-
-      else
-          return (info_ptr->x_pixels_per_unit);
+      else return (info_ptr->x_pixels_per_unit);
    }
 #else
    return (0);
@@ -182,21 +173,18 @@ float PNGAPI
 png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
    {
    if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_pHYs_SUPPORTED
-
+#if defined(PNG_pHYs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_pHYs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_aspect_ratio");
       if (info_ptr->x_pixels_per_unit == 0)
          return ((float)0.0);
-
       else
          return ((float)((float)info_ptr->y_pixels_per_unit
             /(float)info_ptr->x_pixels_per_unit));
    }
 #else
-      return (0.0);
+   return (0.0);
 #endif
    return ((float)0.0);
 }
@@ -206,20 +194,16 @@ png_int_32 PNGAPI
 png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-#ifdef PNG_oFFs_SUPPORTED
-
+#if defined(PNG_oFFs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_oFFs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
       if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
           return (0);
-
-      else
-          return (info_ptr->x_offset);
+      else return (info_ptr->x_offset);
    }
 #else
-      return (0);
+   return (0);
 #endif
    return (0);
 }
@@ -228,17 +212,13 @@ png_int_32 PNGAPI
 png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-
-#ifdef PNG_oFFs_SUPPORTED
+#if defined(PNG_oFFs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_oFFs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
       if (info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
           return (0);
-
-      else
-          return (info_ptr->y_offset);
+      else return (info_ptr->y_offset);
    }
 #else
    return (0);
@@ -250,17 +230,13 @@ png_int_32 PNGAPI
 png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-
-#ifdef PNG_oFFs_SUPPORTED
+#if defined(PNG_oFFs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_oFFs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
       if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
           return (0);
-
-      else
-          return (info_ptr->x_offset);
+      else return (info_ptr->x_offset);
    }
 #else
    return (0);
@@ -272,17 +248,13 @@ png_int_32 PNGAPI
 png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
 {
    if (png_ptr != NULL && info_ptr != NULL)
-
-#ifdef PNG_oFFs_SUPPORTED
+#if defined(PNG_oFFs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_oFFs)
    {
-      png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
-
+      png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
       if (info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
           return (0);
-
-      else
-          return (info_ptr->y_offset);
+      else return (info_ptr->y_offset);
    }
 #else
    return (0);
@@ -326,7 +298,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
      *.00003937);
 }
 
-#ifdef PNG_pHYs_SUPPORTED
+#if defined(PNG_pHYs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@@ -335,8 +307,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
 
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
    {
-      png_debug1(1, "in %s retrieval function", "pHYs");
-
+      png_debug1(1, "in %s retrieval function\n", "pHYs");
       if (res_x != NULL)
       {
          *res_x = info_ptr->x_pixels_per_unit;
@@ -385,7 +356,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr)
       return (NULL);
 }
 
-#ifdef PNG_bKGD_SUPPORTED
+#if defined(PNG_bKGD_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
    png_color_16p *background)
@@ -393,8 +364,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
       && background != NULL)
    {
-      png_debug1(1, "in %s retrieval function", "bKGD");
-
+      png_debug1(1, "in %s retrieval function\n", "bKGD");
       *background = &(info_ptr->background);
       return (PNG_INFO_bKGD);
    }
@@ -402,7 +372,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_cHRM_SUPPORTED
+#if defined(PNG_cHRM_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@@ -411,8 +381,7 @@ png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
 {
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
    {
-      png_debug1(1, "in %s retrieval function", "cHRM");
-
+      png_debug1(1, "in %s retrieval function\n", "cHRM");
       if (white_x != NULL)
          *white_x = (double)info_ptr->x_white;
       if (white_y != NULL)
@@ -441,10 +410,9 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
    png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
    png_fixed_point *blue_x, png_fixed_point *blue_y)
 {
-   png_debug1(1, "in %s retrieval function", "cHRM");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
    {
+      png_debug1(1, "in %s retrieval function\n", "cHRM");
       if (white_x != NULL)
          *white_x = info_ptr->int_x_white;
       if (white_y != NULL)
@@ -468,16 +436,15 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#ifdef PNG_gAMA_SUPPORTED
+#if defined(PNG_gAMA_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
 {
-   png_debug1(1, "in %s retrieval function", "gAMA");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
       && file_gamma != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "gAMA");
       *file_gamma = (double)info_ptr->gamma;
       return (PNG_INFO_gAMA);
    }
@@ -489,11 +456,10 @@ png_uint_32 PNGAPI
 png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
     png_fixed_point *int_file_gamma)
 {
-   png_debug1(1, "in %s retrieval function", "gAMA");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
       && int_file_gamma != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "gAMA");
       *int_file_gamma = info_ptr->int_gamma;
       return (PNG_INFO_gAMA);
    }
@@ -502,15 +468,14 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#ifdef PNG_sRGB_SUPPORTED
+#if defined(PNG_sRGB_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 {
-   png_debug1(1, "in %s retrieval function", "sRGB");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
       && file_srgb_intent != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "sRGB");
       *file_srgb_intent = (int)info_ptr->srgb_intent;
       return (PNG_INFO_sRGB);
    }
@@ -518,22 +483,20 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 }
 #endif
 
-#ifdef PNG_iCCP_SUPPORTED
+#if defined(PNG_iCCP_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
              png_charpp name, int *compression_type,
              png_charpp profile, png_uint_32 *proflen)
 {
-   png_debug1(1, "in %s retrieval function", "iCCP");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
       && name != NULL && profile != NULL && proflen != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "iCCP");
       *name = info_ptr->iccp_name;
       *profile = info_ptr->iccp_profile;
-      /* Compression_type is a dummy so the API won't have to change
-       * if we introduce multiple compression types later.
-       */
+      /* compression_type is a dummy so the API won't have to change
+         if we introduce multiple compression types later. */
       *proflen = (int)info_ptr->iccp_proflen;
       *compression_type = (int)info_ptr->iccp_compression;
       return (PNG_INFO_iCCP);
@@ -542,7 +505,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_sPLT_SUPPORTED
+#if defined(PNG_sPLT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
              png_sPLT_tpp spalettes)
@@ -556,15 +519,14 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_hIST_SUPPORTED
+#if defined(PNG_hIST_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
 {
-   png_debug1(1, "in %s retrieval function", "hIST");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
       && hist != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "hIST");
       *hist = info_ptr->hist;
       return (PNG_INFO_hIST);
    }
@@ -579,48 +541,54 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
    int *filter_type)
 
 {
-   png_debug1(1, "in %s retrieval function", "IHDR");
+   if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
+      bit_depth != NULL && color_type != NULL)
+   {
+      png_debug1(1, "in %s retrieval function\n", "IHDR");
+      *width = info_ptr->width;
+      *height = info_ptr->height;
+      *bit_depth = info_ptr->bit_depth;
+      if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
+        png_error(png_ptr, "Invalid bit depth");
+      *color_type = info_ptr->color_type;
+      if (info_ptr->color_type > 6)
+        png_error(png_ptr, "Invalid color type");
+      if (compression_type != NULL)
+         *compression_type = info_ptr->compression_type;
+      if (filter_type != NULL)
+         *filter_type = info_ptr->filter_type;
+      if (interlace_type != NULL)
+         *interlace_type = info_ptr->interlace_type;
 
-   if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
-       height == NULL || bit_depth == NULL || color_type == NULL)
-      return (0);
-
-   *width = info_ptr->width;
-   *height = info_ptr->height;
-   *bit_depth = info_ptr->bit_depth;
-   *color_type = info_ptr->color_type;
-
-   if (compression_type != NULL)
-      *compression_type = info_ptr->compression_type;
-
-   if (filter_type != NULL)
-      *filter_type = info_ptr->filter_type;
-
-   if (interlace_type != NULL)
-      *interlace_type = info_ptr->interlace_type;
-
-   /* This is redundant if we can be sure that the info_ptr values were all
-    * assigned in png_set_IHDR().  We do the check anyhow in case an
-    * application has ignored our advice not to mess with the members
-    * of info_ptr directly.
-    */
-   png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
-       info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
-       info_ptr->compression_type, info_ptr->filter_type);
-
-   return (1);
+      /* check for potential overflow of rowbytes */
+      if (*width == 0 || *width > PNG_UINT_31_MAX)
+        png_error(png_ptr, "Invalid image width");
+      if (*height == 0 || *height > PNG_UINT_31_MAX)
+        png_error(png_ptr, "Invalid image height");
+      if (info_ptr->width > (PNG_UINT_32_MAX
+                 >> 3)      /* 8-byte RGBA pixels */
+                 - 64       /* bigrowbuf hack */
+                 - 1        /* filter byte */
+                 - 7*8      /* rounding of width to multiple of 8 pixels */
+                 - 8)       /* extra max_pixel_depth pad */
+      {
+         png_warning(png_ptr,
+            "Width too large for libpng to process image data.");
+      }
+      return (1);
+   }
+   return (0);
 }
 
-#ifdef PNG_oFFs_SUPPORTED
+#if defined(PNG_oFFs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
    png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
 {
-   png_debug1(1, "in %s retrieval function", "oFFs");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
       && offset_x != NULL && offset_y != NULL && unit_type != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "oFFs");
       *offset_x = info_ptr->x_offset;
       *offset_y = info_ptr->y_offset;
       *unit_type = (int)info_ptr->offset_unit_type;
@@ -630,18 +598,17 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_pCAL_SUPPORTED
+#if defined(PNG_pCAL_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
    png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
    png_charp *units, png_charpp *params)
 {
-   png_debug1(1, "in %s retrieval function", "pCAL");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
-       && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
-       nparams != NULL && units != NULL && params != NULL)
+      && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
+      nparams != NULL && units != NULL && params != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "pCAL");
       *purpose = info_ptr->pcal_purpose;
       *X0 = info_ptr->pcal_X0;
       *X1 = info_ptr->pcal_X1;
@@ -655,14 +622,14 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_sCAL_SUPPORTED
+#if defined(PNG_sCAL_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
              int *unit, double *width, double *height)
 {
     if (png_ptr != NULL && info_ptr != NULL &&
-        (info_ptr->valid & PNG_INFO_sCAL))
+       (info_ptr->valid & PNG_INFO_sCAL))
     {
         *unit = info_ptr->scal_unit;
         *width = info_ptr->scal_pixel_width;
@@ -678,7 +645,7 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
              int *unit, png_charpp width, png_charpp height)
 {
     if (png_ptr != NULL && info_ptr != NULL &&
-        (info_ptr->valid & PNG_INFO_sCAL))
+       (info_ptr->valid & PNG_INFO_sCAL))
     {
         *unit = info_ptr->scal_unit;
         *width = info_ptr->scal_s_width;
@@ -691,30 +658,27 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#ifdef PNG_pHYs_SUPPORTED
+#if defined(PNG_pHYs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
 {
    png_uint_32 retval = 0;
 
-   png_debug1(1, "in %s retrieval function", "pHYs");
-
    if (png_ptr != NULL && info_ptr != NULL &&
       (info_ptr->valid & PNG_INFO_pHYs))
    {
+      png_debug1(1, "in %s retrieval function\n", "pHYs");
       if (res_x != NULL)
       {
          *res_x = info_ptr->x_pixels_per_unit;
          retval |= PNG_INFO_pHYs;
       }
-
       if (res_y != NULL)
       {
          *res_y = info_ptr->y_pixels_per_unit;
          retval |= PNG_INFO_pHYs;
       }
-
       if (unit_type != NULL)
       {
          *unit_type = (int)info_ptr->phys_unit_type;
@@ -729,28 +693,26 @@ png_uint_32 PNGAPI
 png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
    int *num_palette)
 {
-   png_debug1(1, "in %s retrieval function", "PLTE");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
        && palette != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "PLTE");
       *palette = info_ptr->palette;
       *num_palette = info_ptr->num_palette;
-      png_debug1(3, "num_palette = %d", *num_palette);
+      png_debug1(3, "num_palette = %d\n", *num_palette);
       return (PNG_INFO_PLTE);
    }
    return (0);
 }
 
-#ifdef PNG_sBIT_SUPPORTED
+#if defined(PNG_sBIT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 {
-   png_debug1(1, "in %s retrieval function", "sBIT");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
       && sig_bit != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "sBIT");
       *sig_bit = &(info_ptr->sig_bit);
       return (PNG_INFO_sBIT);
    }
@@ -758,23 +720,20 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 }
 #endif
 
-#ifdef PNG_TEXT_SUPPORTED
+#if defined(PNG_TEXT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
    int *num_text)
 {
    if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
    {
-      png_debug1(1, "in %s retrieval function",
+      png_debug1(1, "in %s retrieval function\n",
          (png_ptr->chunk_name[0] == '\0' ? "text"
              : (png_const_charp)png_ptr->chunk_name));
-
       if (text_ptr != NULL)
          *text_ptr = info_ptr->text;
-
       if (num_text != NULL)
          *num_text = info_ptr->num_text;
-
       return ((png_uint_32)info_ptr->num_text);
    }
    if (num_text != NULL)
@@ -783,15 +742,14 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
 }
 #endif
 
-#ifdef PNG_tIME_SUPPORTED
+#if defined(PNG_tIME_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 {
-   png_debug1(1, "in %s retrieval function", "tIME");
-
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
        && mod_time != NULL)
    {
+      png_debug1(1, "in %s retrieval function\n", "tIME");
       *mod_time = &(info_ptr->mod_time);
       return (PNG_INFO_tIME);
    }
@@ -799,7 +757,7 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 }
 #endif
 
-#ifdef PNG_tRNS_SUPPORTED
+#if defined(PNG_tRNS_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
    png_bytep *trans, int *num_trans, png_color_16p *trans_values)
@@ -807,8 +765,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 retval = 0;
    if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
    {
-      png_debug1(1, "in %s retrieval function", "tRNS");
-
+      png_debug1(1, "in %s retrieval function\n", "tRNS");
       if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
       {
           if (trans != NULL)
@@ -816,7 +773,6 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
              *trans = info_ptr->trans;
              retval |= PNG_INFO_tRNS;
           }
-
           if (trans_values != NULL)
              *trans_values = &(info_ptr->trans_values);
       }
@@ -827,7 +783,6 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
              *trans_values = &(info_ptr->trans_values);
              retval |= PNG_INFO_tRNS;
           }
-
           if (trans != NULL)
              *trans = NULL;
       }
@@ -841,7 +796,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
+#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
              png_unknown_chunkpp unknowns)
@@ -855,7 +810,7 @@ png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
+#if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
 png_byte PNGAPI
 png_get_rgb_to_gray_status (png_structp png_ptr)
 {
@@ -863,7 +818,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
 }
 #endif
 
-#ifdef PNG_USER_CHUNKS_SUPPORTED
+#if defined(PNG_USER_CHUNKS_SUPPORTED)
 png_voidp PNGAPI
 png_get_user_chunk_ptr(png_structp png_ptr)
 {
@@ -881,54 +836,54 @@ png_get_compression_buffer_size(png_structp png_ptr)
 
 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
 #ifndef PNG_1_0_X
-/* This function was added to libpng 1.2.0 and should exist by default */
+/* this function was added to libpng 1.2.0 and should exist by default */
 png_uint_32 PNGAPI
 png_get_asm_flags (png_structp png_ptr)
 {
-    /* Obsolete, to be removed from libpng-1.4.0 */
+    /* obsolete, to be removed from libpng-1.4.0 */
     return (png_ptr? 0L: 0L);
 }
 
-/* This function was added to libpng 1.2.0 and should exist by default */
+/* 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 */
+    /* obsolete, to be removed from libpng-1.4.0 */
     flag_select=flag_select;
     return 0L;
 }
 
     /* GRR:  could add this:   && defined(PNG_MMX_CODE_SUPPORTED) */
-/* This function was added to libpng 1.2.0 */
+/* 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 */
+    /* 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;
 }
 
-/* This function was added to libpng 1.2.0 */
+/* 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 */
+    /* obsolete, to be removed from libpng-1.4.0 */
     return (png_ptr? 0: 0);
 }
 
-/* This function was added to libpng 1.2.0 */
+/* 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 */
+    /* obsolete, to be removed from libpng-1.4.0 */
     return (png_ptr? 0L: 0L);
 }
 #endif /* ?PNG_1_0_X */
 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
 
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* These functions were added to libpng 1.2.6 */
+/* these functions were added to libpng 1.2.6 */
 png_uint_32 PNGAPI
 png_get_user_width_max (png_structp png_ptr)
 {
@@ -940,6 +895,6 @@ png_get_user_height_max (png_structp png_ptr)
     return (png_ptr? png_ptr->user_height_max : 0);
 }
 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
-
+ 
 
 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */

pngmem.c

@@ -1,15 +1,12 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * Last changed in libpng 1.2.37 [June 4, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all memory allocation.  Users who
  * need special memory handling are expected to supply replacement
  * functions for png_malloc() and png_free(), and to use
@@ -23,7 +20,7 @@
 
 /* Borland DOS special memory handler */
 #if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* If you change this, be sure to change the one in png.h also */
+/* if you change this, be sure to change the one in png.h also */
 
 /* Allocate memory for a png_struct.  The malloc and memset can be replaced
    by a single call to calloc() if this is thought to improve performance. */
@@ -43,11 +40,11 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
    png_voidp struct_ptr;
 
    if (type == PNG_STRUCT_INFO)
-      size = png_sizeof(png_info);
+     size = png_sizeof(png_info);
    else if (type == PNG_STRUCT_PNG)
-      size = png_sizeof(png_struct);
+     size = png_sizeof(png_struct);
    else
-      return (png_get_copyright(NULL));
+     return (png_get_copyright(NULL));
 
 #ifdef PNG_USER_MEM_SUPPORTED
    if (malloc_fn != NULL)
@@ -59,7 +56,7 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
    }
    else
 #endif /* PNG_USER_MEM_SUPPORTED */
-   struct_ptr = (png_voidp)farmalloc(size);
+      struct_ptr = (png_voidp)farmalloc(size);
    if (struct_ptr != NULL)
       png_memset(struct_ptr, 0, size);
    return (struct_ptr);
@@ -125,9 +122,9 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
 
 #ifdef PNG_USER_MEM_SUPPORTED
    if (png_ptr->malloc_fn != NULL)
-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
    else
-      ret = (png_malloc_default(png_ptr, size));
+       ret = (png_malloc_default(png_ptr, size));
    if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
        png_error(png_ptr, "Out of memory!");
    return (ret);
@@ -152,12 +149,12 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
 #endif
 
    if (size != (size_t)size)
-      ret = NULL;
+     ret = NULL;
    else if (size == (png_uint_32)65536L)
    {
       if (png_ptr->offset_table == NULL)
       {
-         /* Try to see if we need to do any of this fancy stuff */
+         /* try to see if we need to do any of this fancy stuff */
          ret = farmalloc(size);
          if (ret == NULL || ((png_size_t)ret & 0xffff))
          {
@@ -272,10 +269,10 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
    return (ret);
 }
 
-/* Free a pointer allocated by png_malloc().  In the default
- * configuration, png_ptr is not used, but is passed in case it
- * is needed.  If ptr is NULL, return without taking any action.
- */
+/* free a pointer allocated by png_malloc().  In the default
+   configuration, png_ptr is not used, but is passed in case it
+   is needed.  If ptr is NULL, return without taking any action. */
+
 void PNGAPI
 png_free(png_structp png_ptr, png_voidp ptr)
 {
@@ -288,8 +285,7 @@ png_free(png_structp png_ptr, png_voidp ptr)
       (*(png_ptr->free_fn))(png_ptr, ptr);
       return;
    }
-   else
-      png_free_default(png_ptr, ptr);
+   else png_free_default(png_ptr, ptr);
 }
 
 void PNGAPI
@@ -297,8 +293,7 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
 
-   if (png_ptr == NULL || ptr == NULL)
-      return;
+   if (png_ptr == NULL || ptr == NULL) return;
 
    if (png_ptr->offset_table != NULL)
    {
@@ -425,12 +420,10 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
 }
 
 /* Allocate memory.  For reasonable files, size should never exceed
- * 64K.  However, zlib may allocate more then 64K if you don't tell
- * it not to.  See zconf.h and png.h for more information.  zlib does
- * need to allocate exactly 64K, so whatever you call here must
- * have the ability to do that.
- */
-
+   64K.  However, zlib may allocate more then 64K if you don't tell
+   it not to.  See zconf.h and png.h for more information.  zlib does
+   need to allocate exactly 64K, so whatever you call here must
+   have the ability to do that. */
 
 png_voidp PNGAPI
 png_malloc(png_structp png_ptr, png_uint_32 size)
@@ -442,9 +435,9 @@ png_malloc(png_structp png_ptr, png_uint_32 size)
       return (NULL);
 
    if (png_ptr->malloc_fn != NULL)
-      ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, (png_size_t)size));
    else
-      ret = (png_malloc_default(png_ptr, size));
+       ret = (png_malloc_default(png_ptr, size));
    if (ret == NULL && (png_ptr->flags&PNG_FLAG_MALLOC_NULL_MEM_OK) == 0)
        png_error(png_ptr, "Out of Memory!");
    return (ret);
@@ -471,23 +464,23 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
    }
 #endif
 
-   /* Check for overflow */
+ /* Check for overflow */
 #if defined(__TURBOC__) && !defined(__FLAT__)
-   if (size != (unsigned long)size)
-      ret = NULL;
-   else
-      ret = farmalloc(size);
+ if (size != (unsigned long)size)
+   ret = NULL;
+ else
+   ret = farmalloc(size);
 #else
 # if defined(_MSC_VER) && defined(MAXSEG_64K)
-   if (size != (unsigned long)size)
-      ret = NULL;
-   else
-      ret = halloc(size, 1);
+ if (size != (unsigned long)size)
+   ret = NULL;
+ else
+   ret = halloc(size, 1);
 # else
-   if (size != (size_t)size)
-      ret = NULL;
-   else
-      ret = malloc((size_t)size);
+ if (size != (size_t)size)
+   ret = NULL;
+ else
+   ret = malloc((size_t)size);
 # endif
 #endif
 
@@ -500,8 +493,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
 }
 
 /* Free a pointer allocated by png_malloc().  If ptr is NULL, return
- * without taking any action.
- */
+   without taking any action. */
 void PNGAPI
 png_free(png_structp png_ptr, png_voidp ptr)
 {
@@ -514,8 +506,7 @@ png_free(png_structp png_ptr, png_voidp ptr)
       (*(png_ptr->free_fn))(png_ptr, ptr);
       return;
    }
-   else
-      png_free_default(png_ptr, ptr);
+   else png_free_default(png_ptr, ptr);
 }
 void PNGAPI
 png_free_default(png_structp png_ptr, png_voidp ptr)
@@ -538,7 +529,7 @@ png_free_default(png_structp png_ptr, png_voidp ptr)
 
 #endif /* Not Borland DOS special memory handler */
 
-#ifdef PNG_1_0_X
+#if defined(PNG_1_0_X)
 #  define png_malloc_warn png_malloc
 #else
 /* This function was added at libpng version 1.2.3.  The png_malloc_warn()
@@ -551,8 +542,7 @@ png_malloc_warn(png_structp png_ptr, png_uint_32 size)
 {
    png_voidp ptr;
    png_uint_32 save_flags;
-   if (png_ptr == NULL)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
 
    save_flags = png_ptr->flags;
    png_ptr->flags|=PNG_FLAG_MALLOC_NULL_MEM_OK;
@@ -612,8 +602,7 @@ png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr
 png_voidp PNGAPI
 png_get_mem_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
-      return (NULL);
+   if (png_ptr == NULL) return (NULL);
    return ((png_voidp)png_ptr->mem_ptr);
 }
 #endif /* PNG_USER_MEM_SUPPORTED */

pngpread.c

@@ -1,21 +1,18 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * Last changed in libpng 1.2.38 [July 16, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.32 [September 18, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
 #define PNG_INTERNAL
 #include "png.h"
 #ifdef PNG_PROGRESSIVE_READ_SUPPORTED
 
-/* Push model modes */
+/* push model modes */
 #define PNG_READ_SIG_MODE   0
 #define PNG_READ_CHUNK_MODE 1
 #define PNG_READ_IDAT_MODE  2
@@ -30,9 +27,7 @@ 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 || info_ptr == NULL) return;
    png_push_restore_buffer(png_ptr, buffer, buffer_size);
 
    while (png_ptr->buffer_size)
@@ -47,9 +42,7 @@ png_process_data(png_structp png_ptr, png_infop info_ptr,
 void /* PRIVATE */
 png_process_some_data(png_structp png_ptr, png_infop info_ptr)
 {
-   if (png_ptr == NULL)
-      return;
-
+   if (png_ptr == NULL) return;
    switch (png_ptr->process_mode)
    {
       case PNG_READ_SIG_MODE:
@@ -57,26 +50,22 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
          png_push_read_sig(png_ptr, info_ptr);
          break;
       }
-
       case PNG_READ_CHUNK_MODE:
       {
          png_push_read_chunk(png_ptr, info_ptr);
          break;
       }
-
       case PNG_READ_IDAT_MODE:
       {
          png_push_read_IDAT(png_ptr);
          break;
       }
-
 #if defined(PNG_READ_tEXt_SUPPORTED)
       case PNG_READ_tEXt_MODE:
       {
          png_push_read_tEXt(png_ptr, info_ptr);
          break;
       }
-
 #endif
 #if defined(PNG_READ_zTXt_SUPPORTED)
       case PNG_READ_zTXt_MODE:
@@ -84,7 +73,6 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
          png_push_read_zTXt(png_ptr, info_ptr);
          break;
       }
-
 #endif
 #if defined(PNG_READ_iTXt_SUPPORTED)
       case PNG_READ_iTXt_MODE:
@@ -92,14 +80,12 @@ png_process_some_data(png_structp png_ptr, png_infop info_ptr)
          png_push_read_iTXt(png_ptr, info_ptr);
          break;
       }
-
 #endif
       case PNG_SKIP_MODE:
       {
          png_push_crc_finish(png_ptr);
          break;
       }
-
       default:
       {
          png_ptr->buffer_size = 0;
@@ -238,16 +224,13 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
    {
       if (png_ptr->push_length != 13)
          png_error(png_ptr, "Invalid IHDR length");
-
       if (png_ptr->push_length + 4 > png_ptr->buffer_size)
       {
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
    }
-
    else if (!png_memcmp(png_ptr->chunk_name, png_IEND, 4))
    {
       if (png_ptr->push_length + 4 > png_ptr->buffer_size)
@@ -255,13 +238,11 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
 
       png_ptr->process_mode = PNG_READ_DONE_MODE;
       png_push_have_end(png_ptr, info_ptr);
    }
-
 #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
    else if (png_handle_as_unknown(png_ptr, png_ptr->chunk_name))
    {
@@ -270,26 +251,20 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
          png_ptr->mode |= PNG_HAVE_IDAT;
-
       png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length);
-
       if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
          png_ptr->mode |= PNG_HAVE_PLTE;
-
       else if (!png_memcmp(png_ptr->chunk_name, png_IDAT, 4))
       {
          if (!(png_ptr->mode & PNG_HAVE_IHDR))
             png_error(png_ptr, "Missing IHDR before IDAT");
-
          else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
                   !(png_ptr->mode & PNG_HAVE_PLTE))
             png_error(png_ptr, "Missing PLTE before IDAT");
       }
    }
-
 #endif
    else if (!png_memcmp(png_ptr->chunk_name, png_PLTE, 4))
    {
@@ -300,26 +275,23 @@ 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))
    {
       /* 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
        * is called after the image has been read - we have an error).
        */
-
-      if (!(png_ptr->mode & PNG_HAVE_IHDR))
-         png_error(png_ptr, "Missing IHDR before IDAT");
-
-      else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
-          !(png_ptr->mode & PNG_HAVE_PLTE))
-         png_error(png_ptr, "Missing PLTE before IDAT");
+     if (!(png_ptr->mode & PNG_HAVE_IHDR))
+       png_error(png_ptr, "Missing IHDR before IDAT");
+     else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
+         !(png_ptr->mode & PNG_HAVE_PLTE))
+       png_error(png_ptr, "Missing PLTE before IDAT");
 
       if (png_ptr->mode & PNG_HAVE_IDAT)
       {
          if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
-            if (png_ptr->push_length == 0)
-               return;
+           if (png_ptr->push_length == 0)
+              return;
 
          if (png_ptr->mode & PNG_AFTER_IDAT)
             png_error(png_ptr, "Too many IDAT's found");
@@ -333,7 +305,6 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
       png_ptr->zstream.next_out = png_ptr->row_buf;
       return;
    }
-
 #if defined(PNG_READ_gAMA_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_gAMA, 4))
    {
@@ -342,10 +313,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_sBIT_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_sBIT, 4))
@@ -355,10 +324,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_cHRM_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_cHRM, 4))
@@ -368,10 +335,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_sRGB_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_sRGB, 4))
@@ -381,10 +346,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_iCCP_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_iCCP, 4))
@@ -394,10 +357,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_sPLT_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_sPLT, 4))
@@ -407,10 +368,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_tRNS_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_tRNS, 4))
@@ -420,10 +379,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_bKGD_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_bKGD, 4))
@@ -433,10 +390,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_hIST_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_hIST, 4))
@@ -446,10 +401,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_pHYs_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_pHYs, 4))
@@ -459,10 +412,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_oFFs_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_oFFs, 4))
@@ -472,11 +423,9 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
    }
 #endif
-
 #if defined(PNG_READ_pCAL_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_pCAL, 4))
    {
@@ -485,10 +434,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_sCAL_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_sCAL, 4))
@@ -498,10 +445,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_tIME_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_tIME, 4))
@@ -511,10 +456,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_tEXt_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_tEXt, 4))
@@ -524,10 +467,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_push_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_zTXt_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_zTXt, 4))
@@ -537,10 +478,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_push_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
 #if defined(PNG_READ_iTXt_SUPPORTED)
    else if (!png_memcmp(png_ptr->chunk_name, png_iTXt, 4))
@@ -550,10 +489,8 @@ png_push_read_chunk(png_structp png_ptr, png_infop info_ptr)
          png_push_save_buffer(png_ptr);
          return;
       }
-
       png_push_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
    }
-
 #endif
    else
    {
@@ -628,9 +565,7 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
 {
    png_bytep ptr;
 
-   if (png_ptr == NULL)
-      return;
-
+   if (png_ptr == NULL) return;
    ptr = buffer;
    if (png_ptr->save_buffer_size)
    {
@@ -654,7 +589,6 @@ png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
 
       if (length < png_ptr->current_buffer_size)
          save_size = length;
-
       else
          save_size = png_ptr->current_buffer_size;
 
@@ -695,7 +629,6 @@ png_push_save_buffer(png_structp png_ptr)
       {
         png_error(png_ptr, "Potential overflow of save_buffer");
       }
-
       new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
       old_buffer = png_ptr->save_buffer;
       png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr,
@@ -764,8 +697,7 @@ png_push_read_IDAT(png_structp png_ptr)
       if (png_ptr->idat_size < (png_uint_32)png_ptr->save_buffer_size)
       {
          save_size = (png_size_t)png_ptr->idat_size;
-
-         /* Check for overflow */
+         /* check for overflow */
          if ((png_uint_32)save_size != png_ptr->idat_size)
             png_error(png_ptr, "save_size overflowed in pngpread");
       }
@@ -773,10 +705,8 @@ png_push_read_IDAT(png_structp png_ptr)
          save_size = png_ptr->save_buffer_size;
 
       png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
-
       if (!(png_ptr->flags & PNG_FLAG_ZLIB_FINISHED))
          png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
-
       png_ptr->idat_size -= save_size;
       png_ptr->buffer_size -= save_size;
       png_ptr->save_buffer_size -= save_size;
@@ -789,8 +719,7 @@ png_push_read_IDAT(png_structp png_ptr)
       if (png_ptr->idat_size < (png_uint_32)png_ptr->current_buffer_size)
       {
          save_size = (png_size_t)png_ptr->idat_size;
-
-         /* Check for overflow */
+         /* check for overflow */
          if ((png_uint_32)save_size != png_ptr->idat_size)
             png_error(png_ptr, "save_size overflowed in pngpread");
       }
@@ -840,7 +769,6 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
          {
             if (png_ptr->zstream.avail_in)
                png_error(png_ptr, "Extra compressed data");
-
             if (!(png_ptr->zstream.avail_out))
             {
                png_push_process_row(png_ptr);
@@ -852,7 +780,6 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
          }
          else if (ret == Z_BUF_ERROR)
             break;
-
          else
             png_error(png_ptr, "Decompression Error");
       }
@@ -874,7 +801,6 @@ png_process_IDAT_data(png_structp png_ptr, png_bytep buffer,
          png_ptr->zstream.avail_out = (uInt)png_ptr->irowbytes;
          png_ptr->zstream.next_out = png_ptr->row_buf;
       }
-
       else
          break;
    }
@@ -903,7 +829,7 @@ png_push_process_row(png_structp png_ptr)
       png_do_read_transformations(png_ptr);
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED)
-   /* Blow up interlaced rows to full size */
+   /* blow up interlaced rows to full size */
    if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
    {
       if (png_ptr->pass < 6)
@@ -921,10 +847,9 @@ png_push_process_row(png_structp png_ptr)
             for (i = 0; i < 8 && png_ptr->pass == 0; i++)
             {
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
-               png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */
+               png_read_push_finish_row(png_ptr); /* updates png_ptr->pass */
             }
-
-            if (png_ptr->pass == 2) /* Pass 1 might be empty */
+            if (png_ptr->pass == 2) /* pass 1 might be empty */
             {
                for (i = 0; i < 4 && png_ptr->pass == 2; i++)
                {
@@ -932,7 +857,6 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-
             if (png_ptr->pass == 4 && png_ptr->height <= 4)
             {
                for (i = 0; i < 2 && png_ptr->pass == 4; i++)
@@ -941,16 +865,13 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-
             if (png_ptr->pass == 6 && png_ptr->height <= 4)
             {
                 png_push_have_row(png_ptr, png_bytep_NULL);
                 png_read_push_finish_row(png_ptr);
             }
-
             break;
          }
-
          case 1:
          {
             int i;
@@ -959,8 +880,7 @@ png_push_process_row(png_structp png_ptr)
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
                png_read_push_finish_row(png_ptr);
             }
-
-            if (png_ptr->pass == 2) /* Skip top 4 generated rows */
+            if (png_ptr->pass == 2) /* skip top 4 generated rows */
             {
                for (i = 0; i < 4 && png_ptr->pass == 2; i++)
                {
@@ -968,27 +888,22 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-
             break;
          }
-
          case 2:
          {
             int i;
-
             for (i = 0; i < 4 && png_ptr->pass == 2; i++)
             {
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
                png_read_push_finish_row(png_ptr);
             }
-
             for (i = 0; i < 4 && png_ptr->pass == 2; i++)
             {
                png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
-
-            if (png_ptr->pass == 4) /* Pass 3 might be empty */
+            if (png_ptr->pass == 4) /* pass 3 might be empty */
             {
                for (i = 0; i < 2 && png_ptr->pass == 4; i++)
                {
@@ -996,21 +911,17 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-
             break;
          }
-
          case 3:
          {
             int i;
-
             for (i = 0; i < 4 && png_ptr->pass == 3; i++)
             {
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
                png_read_push_finish_row(png_ptr);
             }
-
-            if (png_ptr->pass == 4) /* Skip top two generated rows */
+            if (png_ptr->pass == 4) /* skip top two generated rows */
             {
                for (i = 0; i < 2 && png_ptr->pass == 4; i++)
                {
@@ -1018,61 +929,49 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-
             break;
          }
-
          case 4:
          {
             int i;
-
             for (i = 0; i < 2 && png_ptr->pass == 4; i++)
             {
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
                png_read_push_finish_row(png_ptr);
             }
-
             for (i = 0; i < 2 && png_ptr->pass == 4; i++)
             {
                png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
-
-            if (png_ptr->pass == 6) /* Pass 5 might be empty */
+            if (png_ptr->pass == 6) /* pass 5 might be empty */
             {
                png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
-
             break;
          }
-
          case 5:
          {
             int i;
-
             for (i = 0; i < 2 && png_ptr->pass == 5; i++)
             {
                png_push_have_row(png_ptr, png_ptr->row_buf + 1);
                png_read_push_finish_row(png_ptr);
             }
-
-            if (png_ptr->pass == 6) /* Skip top generated row */
+            if (png_ptr->pass == 6) /* skip top generated row */
             {
                png_push_have_row(png_ptr, png_bytep_NULL);
                png_read_push_finish_row(png_ptr);
             }
-
             break;
          }
          case 6:
          {
             png_push_have_row(png_ptr, png_ptr->row_buf + 1);
             png_read_push_finish_row(png_ptr);
-
             if (png_ptr->pass != 6)
                break;
-
             png_push_have_row(png_ptr, png_bytep_NULL);
             png_read_push_finish_row(png_ptr);
          }
@@ -1090,18 +989,18 @@ void /* PRIVATE */
 png_read_push_finish_row(png_structp png_ptr)
 {
 #ifdef PNG_USE_LOCAL_ARRAYS
-   /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
+   /* arrays to facilitate easy interlacing - use pass (0 - 6) as index */
 
-   /* Start of interlace block */
+   /* start of interlace block */
    PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
 
-   /* Offset to next interlace block */
+   /* offset to next interlace block */
    PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
 
-   /* Start of interlace block in the y direction */
+   /* start of interlace block in the y direction */
    PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
 
-   /* Offset to next interlace block in the y direction */
+   /* offset to next interlace block in the y direction */
    PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
 
    /* Height of interlace block.  This is not currently used - if you need
@@ -1114,7 +1013,6 @@ png_read_push_finish_row(png_structp png_ptr)
    if (png_ptr->row_number < png_ptr->num_rows)
       return;
 
-#if defined(PNG_READ_INTERLACING_SUPPORTED)
    if (png_ptr->interlaced)
    {
       png_ptr->row_number = 0;
@@ -1130,7 +1028,6 @@ png_read_push_finish_row(png_structp png_ptr)
 
          if (png_ptr->pass > 7)
             png_ptr->pass--;
-
          if (png_ptr->pass >= 7)
             break;
 
@@ -1152,7 +1049,6 @@ png_read_push_finish_row(png_structp png_ptr)
 
       } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
    }
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
 }
 
 #if defined(PNG_READ_tEXt_SUPPORTED)
@@ -1163,7 +1059,7 @@ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place tEXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
+         info_ptr = info_ptr; /* to quiet some compiler warnings */
       }
 
 #ifdef PNG_MAX_MALLOC_64K
@@ -1195,10 +1091,8 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
 
       if (png_ptr->buffer_size < png_ptr->current_text_left)
          text_size = png_ptr->buffer_size;
-
       else
          text_size = png_ptr->current_text_left;
-
       png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
       png_ptr->current_text_left -= text_size;
       png_ptr->current_text_ptr += text_size;
@@ -1226,7 +1120,7 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)
       key = png_ptr->current_text;
 
       for (text = key; *text; text++)
-         /* Empty loop */ ;
+         /* empty loop */ ;
 
       if (text < key + png_ptr->current_text_size)
          text++;
@@ -1261,7 +1155,7 @@ png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place zTXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
+         info_ptr = info_ptr; /* to quiet some compiler warnings */
       }
 
 #ifdef PNG_MAX_MALLOC_64K
@@ -1295,10 +1189,8 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
 
       if (png_ptr->buffer_size < (png_uint_32)png_ptr->current_text_left)
          text_size = png_ptr->buffer_size;
-
       else
          text_size = png_ptr->current_text_left;
-
       png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
       png_ptr->current_text_left -= text_size;
       png_ptr->current_text_ptr += text_size;
@@ -1322,7 +1214,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
       key = png_ptr->current_text;
 
       for (text = key; *text; text++)
-         /* Empty loop */ ;
+         /* empty loop */ ;
 
       /* zTXt can't have zero text */
       if (text >= key + png_ptr->current_text_size)
@@ -1334,7 +1226,7 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
 
       text++;
 
-      if (*text != PNG_TEXT_COMPRESSION_zTXt) /* Check compression byte */
+      if (*text != PNG_TEXT_COMPRESSION_zTXt) /* check compression byte */
       {
          png_ptr->current_text = NULL;
          png_free(png_ptr, key);
@@ -1373,15 +1265,11 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
                text = (png_charp)png_malloc(png_ptr,
                      (png_uint_32)(png_ptr->zbuf_size
                      - png_ptr->zstream.avail_out + key_size + 1));
-
                png_memcpy(text + key_size, png_ptr->zbuf,
                   png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
                png_memcpy(text, key, key_size);
-
                text_size = key_size + png_ptr->zbuf_size -
                   png_ptr->zstream.avail_out;
-
                *(text + text_size) = '\0';
             }
             else
@@ -1392,13 +1280,10 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
                text = (png_charp)png_malloc(png_ptr, text_size +
                   (png_uint_32)(png_ptr->zbuf_size 
                   - png_ptr->zstream.avail_out + 1));
-
                png_memcpy(text, tmp, text_size);
                png_free(png_ptr, tmp);
-
                png_memcpy(text + text_size, png_ptr->zbuf,
                   png_ptr->zbuf_size - png_ptr->zstream.avail_out);
-
                text_size += png_ptr->zbuf_size - png_ptr->zstream.avail_out;
                *(text + text_size) = '\0';
             }
@@ -1462,7 +1347,7 @@ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place iTXt");
-         info_ptr = info_ptr; /* To quiet some compiler warnings */
+         info_ptr = info_ptr; /* to quiet some compiler warnings */
       }
 
 #ifdef PNG_MAX_MALLOC_64K
@@ -1495,10 +1380,8 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
 
       if (png_ptr->buffer_size < png_ptr->current_text_left)
          text_size = png_ptr->buffer_size;
-
       else
          text_size = png_ptr->current_text_left;
-
       png_crc_read(png_ptr, (png_bytep)png_ptr->current_text_ptr, text_size);
       png_ptr->current_text_left -= text_size;
       png_ptr->current_text_ptr += text_size;
@@ -1529,25 +1412,23 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
       key = png_ptr->current_text;
 
       for (lang = key; *lang; lang++)
-         /* Empty loop */ ;
+         /* empty loop */ ;
 
       if (lang < key + png_ptr->current_text_size - 3)
          lang++;
 
       comp_flag = *lang++;
-      lang++;     /* Skip comp_type, always zero */
+      lang++;     /* skip comp_type, always zero */
 
       for (lang_key = lang; *lang_key; lang_key++)
-         /* Empty loop */ ;
-
-      lang_key++;        /* Skip NUL separator */
+         /* 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 */ ;
+           /* empty loop */ ;
       }
 
       if (text < key + png_ptr->current_text_size)
@@ -1555,7 +1436,6 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
 
       text_ptr = (png_textp)png_malloc(png_ptr,
          (png_uint_32)png_sizeof(png_text));
-
       text_ptr->compression = comp_flag + 2;
       text_ptr->key = key;
       text_ptr->lang = lang;
@@ -1597,7 +1477,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
 #endif
          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)
@@ -1618,28 +1498,23 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
         = '\0';
 
       png_ptr->unknown_chunk.size = (png_size_t)length;
-
       if (length == 0)
          png_ptr->unknown_chunk.data = NULL;
-
       else
       {
          png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr,
        (png_uint_32)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 */
+         /* 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))
@@ -1650,14 +1525,12 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
                &png_ptr->unknown_chunk, 1);
          }
       }
-
       else
 #endif
         png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
       png_free(png_ptr, png_ptr->unknown_chunk.data);
       png_ptr->unknown_chunk.data = NULL;
    }
-
    else
 #endif
       skip=length;
@@ -1694,9 +1567,7 @@ png_progressive_combine_row (png_structp png_ptr,
    PNG_CONST int FARDATA png_pass_dsp_mask[7] =
       {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff};
 #endif
-   if (png_ptr == NULL)
-      return;
-
+   if (png_ptr == NULL) return;
    if (new_row != NULL)    /* new_row must == png_ptr->row_buf here. */
       png_combine_row(png_ptr, old_row, png_pass_dsp_mask[png_ptr->pass]);
 }
@@ -1706,9 +1577,7 @@ png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,
    png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
    png_progressive_end_ptr end_fn)
 {
-   if (png_ptr == NULL)
-      return;
-
+   if (png_ptr == NULL) return;
    png_ptr->info_fn = info_fn;
    png_ptr->row_fn = row_fn;
    png_ptr->end_fn = end_fn;
@@ -1719,9 +1588,7 @@ png_set_progressive_read_fn(png_structp png_ptr, png_voidp progressive_ptr,
 png_voidp PNGAPI
 png_get_progressive_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
-      return (NULL);
-
+   if (png_ptr == NULL) return (NULL);
    return png_ptr->io_ptr;
 }
 #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */

pngread.c

@@ -1,15 +1,12 @@
 
 /* pngread.c - read a PNG file
  *
- * Last changed in libpng 1.2.37 [June 4, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file contains routines that an application calls directly to
  * read a PNG file or stream.
  */
@@ -50,7 +47,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 
    int i;
 
-   png_debug(1, "in png_create_read_struct");
+   png_debug(1, "in png_create_read_struct\n");
 #ifdef PNG_USER_MEM_SUPPORTED
    png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
       (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
@@ -60,7 +57,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    if (png_ptr == NULL)
       return (NULL);
 
-   /* Added at libpng-1.2.6 */
+   /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
@@ -105,7 +102,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    }
    else
         png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-
+   
 
    if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
    {
@@ -140,7 +137,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
      }
    }
 
-   /* Initialize zbuf - compression buffer */
+   /* initialize zbuf - compression buffer */
    png_ptr->zbuf_size = PNG_ZBUF_SIZE;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
      (png_uint_32)png_ptr->zbuf_size);
@@ -195,8 +192,7 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
    png_size_t png_struct_size, png_size_t png_info_size)
 {
    /* We only come here via pre-1.0.12-compiled applications */
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
 #if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
    if (png_sizeof(png_struct) > png_struct_size ||
       png_sizeof(png_info) > png_info_size)
@@ -250,8 +246,7 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 
    png_structp png_ptr=*ptr_ptr;
 
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
 
    do
    {
@@ -268,10 +263,10 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
      }
    } while (png_libpng_ver[i++]);
 
-   png_debug(1, "in png_read_init_3");
+   png_debug(1, "in png_read_init_3\n");
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Save jump buffer and error functions */
+   /* save jump buffer and error functions */
    png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
 #endif
 
@@ -282,21 +277,21 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
       png_ptr = *ptr_ptr;
    }
 
-   /* Reset all variables to 0 */
+   /* reset all variables to 0 */
    png_memset(png_ptr, 0, png_sizeof(png_struct));
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Restore jump buffer */
+   /* restore jump buffer */
    png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
 #endif
 
-   /* Added at libpng-1.2.6 */
+   /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
 #endif
 
-   /* Initialize zbuf - compression buffer */
+   /* initialize zbuf - compression buffer */
    png_ptr->zbuf_size = PNG_ZBUF_SIZE;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
      (png_uint_32)png_ptr->zbuf_size);
@@ -331,9 +326,8 @@ 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;
-   png_debug(1, "in png_read_info");
+   if (png_ptr == NULL || info_ptr == NULL) return;
+   png_debug(1, "in png_read_info\n");
    /* If we haven't checked all of the PNG signature bytes, do so now. */
    if (png_ptr->sig_bytes < 8)
    {
@@ -535,13 +529,12 @@ png_read_info(png_structp png_ptr, png_infop info_ptr)
 }
 #endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
 
-/* Optional call to update the users info_ptr structure */
+/* optional call to update the users info_ptr structure */
 void PNGAPI
 png_read_update_info(png_structp png_ptr, png_infop info_ptr)
 {
-   png_debug(1, "in png_read_update_info");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_read_update_info\n");
+   if (png_ptr == NULL) return;
    if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
       png_read_start_row(png_ptr);
    else
@@ -559,9 +552,8 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr)
 void PNGAPI
 png_start_read_image(png_structp png_ptr)
 {
-   png_debug(1, "in png_start_read_image");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_start_read_image\n");
+   if (png_ptr == NULL) return;
    if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
       png_read_start_row(png_ptr);
 }
@@ -578,15 +570,14 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
    PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff};
 #endif
    int ret;
-   if (png_ptr == NULL)
-      return;
-   png_debug2(1, "in png_read_row (row %lu, pass %d)",
+   if (png_ptr == NULL) return;
+   png_debug2(1, "in png_read_row (row %lu, pass %d)\n",
       png_ptr->row_number, png_ptr->pass);
    if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
       png_read_start_row(png_ptr);
    if (png_ptr->row_number == 0 && png_ptr->pass == 0)
    {
-   /* Check for transforms that have been set but were defined out */
+   /* check for transforms that have been set but were defined out */
 #if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
    if (png_ptr->transformations & PNG_INVERT_MONO)
       png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined.");
@@ -618,7 +609,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
    }
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED)
-   /* If interlaced and we do not need a new row, combine row and return */
+   /* if interlaced and we do not need a new row, combine row and return */
    if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
    {
       switch (png_ptr->pass)
@@ -765,15 +756,15 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
       png_do_read_transformations(png_ptr);
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED)
-   /* Blow up interlaced rows to full size */
+   /* blow up interlaced rows to full size */
    if (png_ptr->interlaced &&
       (png_ptr->transformations & PNG_INTERLACE))
    {
       if (png_ptr->pass < 6)
-         /* Old interface (pre-1.0.9):
-          * png_do_read_interlace(&(png_ptr->row_info),
-          *    png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
-          */
+/*       old interface (pre-1.0.9):
+         png_do_read_interlace(&(png_ptr->row_info),
+            png_ptr->row_buf + 1, png_ptr->pass, png_ptr->transformations);
+ */
          png_do_read_interlace(png_ptr);
 
       if (dsp_row != NULL)
@@ -831,9 +822,8 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
    png_bytepp rp;
    png_bytepp dp;
 
-   png_debug(1, "in png_read_rows");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_read_rows\n");
+   if (png_ptr == NULL) return;
    rp = row;
    dp = display_row;
    if (rp != NULL && dp != NULL)
@@ -881,9 +871,8 @@ png_read_image(png_structp png_ptr, png_bytepp image)
    int pass, j;
    png_bytepp rp;
 
-   png_debug(1, "in png_read_image");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_read_image\n");
+   if (png_ptr == NULL) return;
 
 #ifdef PNG_READ_INTERLACING_SUPPORTED
    pass = png_set_interlace_handling(png_ptr);
@@ -918,9 +907,8 @@ png_read_image(png_structp png_ptr, png_bytepp image)
 void PNGAPI
 png_read_end(png_structp png_ptr, png_infop info_ptr)
 {
-   png_debug(1, "in png_read_end");
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_read_end\n");
+   if (png_ptr == NULL) return;
    png_crc_finish(png_ptr, 0); /* Finish off CRC from last IDAT chunk */
 
    do
@@ -1087,7 +1075,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr)
 }
 #endif /* PNG_NO_SEQUENTIAL_READ_SUPPORTED */
 
-/* Free all memory used by the read */
+/* free all memory used by the read */
 void PNGAPI
 png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    png_infopp end_info_ptr_ptr)
@@ -1099,7 +1087,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    png_voidp mem_ptr = NULL;
 #endif
 
-   png_debug(1, "in png_destroy_read_struct");
+   png_debug(1, "in png_destroy_read_struct\n");
    if (png_ptr_ptr != NULL)
       png_ptr = *png_ptr_ptr;
    if (png_ptr == NULL)
@@ -1159,7 +1147,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    }
 }
 
-/* Free all memory used by the read (old method) */
+/* free all memory used by the read (old method) */
 void /* PRIVATE */
 png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
 {
@@ -1173,7 +1161,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
    png_free_ptr free_fn;
 #endif
 
-   png_debug(1, "in png_read_destroy");
+   png_debug(1, "in png_read_destroy\n");
    if (info_ptr != NULL)
       png_info_destroy(png_ptr, info_ptr);
 
@@ -1308,8 +1296,7 @@ png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr
 void PNGAPI
 png_set_read_status_fn(png_structp png_ptr, png_read_status_ptr read_row_fn)
 {
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
    png_ptr->read_row_fn = read_row_fn;
 }
 
@@ -1323,10 +1310,9 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
 {
    int row;
 
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
 #if defined(PNG_READ_INVERT_ALPHA_SUPPORTED)
-   /* Invert the alpha channel from opacity to transparency
+   /* invert the alpha channel from opacity to transparency
     */
    if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
        png_set_invert_alpha(png_ptr);
@@ -1342,10 +1328,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
    /* -------------- image transformations start here ------------------- */
 
 #if defined(PNG_READ_16_TO_8_SUPPORTED)
-   /* Tell libpng to strip 16 bit/color files down to 8 bits per color.
+   /* tell libpng to strip 16 bit/color files down to 8 bits per color
     */
    if (transforms & PNG_TRANSFORM_STRIP_16)
-      png_set_strip_16(png_ptr);
+       png_set_strip_16(png_ptr);
 #endif
 
 #if defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
@@ -1353,7 +1339,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     * the background (not recommended).
     */
    if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
-      png_set_strip_alpha(png_ptr);
+       png_set_strip_alpha(png_ptr);
 #endif
 
 #if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
@@ -1361,7 +1347,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     * byte into separate bytes (useful for paletted and grayscale images).
     */
    if (transforms & PNG_TRANSFORM_PACKING)
-      png_set_packing(png_ptr);
+       png_set_packing(png_ptr);
 #endif
 
 #if defined(PNG_READ_PACKSWAP_SUPPORTED)
@@ -1369,7 +1355,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     * (not useful if you are using png_set_packing).
     */
    if (transforms & PNG_TRANSFORM_PACKSWAP)
-      png_set_packswap(png_ptr);
+       png_set_packswap(png_ptr);
 #endif
 
 #if defined(PNG_READ_EXPAND_SUPPORTED)
@@ -1379,9 +1365,9 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     * channels so the data will be available as RGBA quartets.
     */
    if (transforms & PNG_TRANSFORM_EXPAND)
-      if ((png_ptr->bit_depth < 8) ||
-          (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
-          (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
+       if ((png_ptr->bit_depth < 8) ||
+           (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
+           (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
          png_set_expand(png_ptr);
 #endif
 
@@ -1389,10 +1375,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
     */
 
 #if defined(PNG_READ_INVERT_SUPPORTED)
-   /* Invert monochrome files to have 0 as white and 1 as black
+   /* invert monochrome files to have 0 as white and 1 as black
     */
    if (transforms & PNG_TRANSFORM_INVERT_MONO)
-      png_set_invert_mono(png_ptr);
+       png_set_invert_mono(png_ptr);
 #endif
 
 #if defined(PNG_READ_SHIFT_SUPPORTED)
@@ -1411,24 +1397,24 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
 #endif
 
 #if defined(PNG_READ_BGR_SUPPORTED)
-   /* Flip the RGB pixels to BGR (or RGBA to BGRA)
+   /* flip the RGB pixels to BGR (or RGBA to BGRA)
     */
    if (transforms & PNG_TRANSFORM_BGR)
-      png_set_bgr(png_ptr);
+       png_set_bgr(png_ptr);
 #endif
 
 #if defined(PNG_READ_SWAP_ALPHA_SUPPORTED)
-   /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
+   /* swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR)
     */
    if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
        png_set_swap_alpha(png_ptr);
 #endif
 
 #if defined(PNG_READ_SWAP_SUPPORTED)
-   /* Swap bytes of 16 bit files to least significant byte first
+   /* swap bytes of 16 bit files to least significant byte first
     */
    if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
-      png_set_swap(png_ptr);
+       png_set_swap(png_ptr);
 #endif
 
    /* We don't handle adding filler bytes */
@@ -1448,23 +1434,23 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
    {
       info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
          info_ptr->height * png_sizeof(png_bytep));
-      png_memset(info_ptr->row_pointers, 0, info_ptr->height
-         * png_sizeof(png_bytep));
 #ifdef PNG_FREE_ME_SUPPORTED
       info_ptr->free_me |= PNG_FREE_ROWS;
 #endif
       for (row = 0; row < (int)info_ptr->height; row++)
+      {
          info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
             png_get_rowbytes(png_ptr, info_ptr));
+      }
    }
 
    png_read_image(png_ptr, info_ptr->row_pointers);
    info_ptr->valid |= PNG_INFO_IDAT;
 
-   /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
+   /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
    png_read_end(png_ptr, info_ptr);
 
-   transforms = transforms; /* Quiet compiler warnings */
+   transforms = transforms; /* quiet compiler warnings */
    params = params;
 
 }

pngrio.c

@@ -1,15 +1,12 @@
 
 /* pngrio.c - functions for data input
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all input.  Users who need
  * special handling are expected to write a function that has the same
  * arguments as this and performs a similar function, but that possibly
@@ -20,43 +17,39 @@
 
 #define PNG_INTERNAL
 #include "png.h"
-#ifdef PNG_READ_SUPPORTED
+#if defined(PNG_READ_SUPPORTED)
 
 /* Read the data from whatever input you are using.  The default routine
- * reads from a file pointer.  Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered reads.  This should never be asked
- * to read more then 64K on a 16 bit machine.
- */
+   reads from a file pointer.  Note that this routine sometimes gets called
+   with very small lengths, so you should implement some kind of simple
+   buffering if you are using unbuffered reads.  This should never be asked
+   to read more then 64K on a 16 bit machine. */
 void /* PRIVATE */
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_debug1(4, "reading %d bytes", (int)length);
- 
+   png_debug1(4, "reading %d bytes\n", (int)length);
    if (png_ptr->read_data_fn != NULL)
       (*(png_ptr->read_data_fn))(png_ptr, data, length);
    else
       png_error(png_ptr, "Call to NULL read function");
 }
 
-#ifndef PNG_NO_STDIO
+#if !defined(PNG_NO_STDIO)
 /* This is the function that does the actual reading of data.  If you are
- * not reading from a standard C stream, you should create a replacement
- * read_data function and use it at run time with png_set_read_fn(), rather
- * than changing the library.
- */
+   not reading from a standard C stream, you should create a replacement
+   read_data function and use it at run time with png_set_read_fn(), rather
+   than changing the library. */
 #ifndef USE_FAR_KEYWORD
 void PNGAPI
 png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    png_size_t check;
 
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
    /* fread() returns 0 on error, so it is OK to store this in a png_size_t
     * instead of an int, which is what fread() actually returns.
     */
-#ifdef _WIN32_WCE
+#if defined(_WIN32_WCE)
    if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
       check = 0;
 #else
@@ -68,7 +61,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
       png_error(png_ptr, "Read Error");
 }
 #else
-/* This is the model-independent version. Since the standard I/O library
+/* this is the model-independent version. Since the standard I/O library
    can't handle far buffers in the medium and small models, we have to copy
    the data.
 */
@@ -83,14 +76,13 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
    png_byte *n_data;
    png_FILE_p io_ptr;
 
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
    /* Check if data really is near. If so, use usual code. */
    n_data = (png_byte *)CVT_PTR_NOCHECK(data);
    io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
    if ((png_bytep)n_data == data)
    {
-#ifdef _WIN32_WCE
+#if defined(_WIN32_WCE)
       if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
          check = 0;
 #else
@@ -106,7 +98,7 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
       do
       {
          read = MIN(NEAR_BUF_SIZE, remaining);
-#ifdef _WIN32_WCE
+#if defined(_WIN32_WCE)
          if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
             err = 0;
 #else
@@ -129,30 +121,26 @@ png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #endif
 
 /* This function allows the application to supply a new input function
- * for libpng if standard C streams aren't being used.
- *
- * This function takes as its arguments:
- * png_ptr      - pointer to a png input data structure
- * io_ptr       - pointer to user supplied structure containing info about
- *                the input functions.  May be NULL.
- * read_data_fn - pointer to a new input function that takes as its
- *                arguments a pointer to a png_struct, a pointer to
- *                a location where input data can be stored, and a 32-bit
- *                unsigned int that is the number of bytes to be read.
- *                To exit and output any fatal error messages the new write
- *                function should call png_error(png_ptr, "Error msg").
- *                May be NULL, in which case libpng's default function will
- *                be used.
- */
+   for libpng if standard C streams aren't being used.
+
+   This function takes as its arguments:
+   png_ptr      - pointer to a png input data structure
+   io_ptr       - pointer to user supplied structure containing info about
+                  the input functions.  May be NULL.
+   read_data_fn - pointer to a new input function that takes as its
+                  arguments a pointer to a png_struct, a pointer to
+                  a location where input data can be stored, and a 32-bit
+                  unsigned int that is the number of bytes to be read.
+                  To exit and output any fatal error messages the new write
+                  function should call png_error(png_ptr, "Error msg"). */
 void PNGAPI
 png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
    png_rw_ptr read_data_fn)
 {
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
    png_ptr->io_ptr = io_ptr;
 
-#ifndef PNG_NO_STDIO
+#if !defined(PNG_NO_STDIO)
    if (read_data_fn != NULL)
       png_ptr->read_data_fn = read_data_fn;
    else
@@ -171,7 +159,7 @@ png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
          "same structure.  Resetting write_data_fn to NULL.");
    }
 
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
    png_ptr->output_flush_fn = NULL;
 #endif
 }

pngtrans.c

@@ -1,14 +1,11 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
 #define PNG_INTERNAL
@@ -16,41 +13,35 @@
 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
 
 #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Turn on BGR-to-RGB mapping */
+/* turn on BGR-to-RGB mapping */
 void PNGAPI
 png_set_bgr(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_bgr");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_bgr\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_BGR;
 }
 #endif
 
 #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Turn on 16 bit byte swapping */
+/* turn on 16 bit byte swapping */
 void PNGAPI
 png_set_swap(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_swap");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_swap\n");
+   if (png_ptr == NULL) return;
    if (png_ptr->bit_depth == 16)
       png_ptr->transformations |= PNG_SWAP_BYTES;
 }
 #endif
 
 #if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
-/* Turn on pixel packing */
+/* turn on pixel packing */
 void PNGAPI
 png_set_packing(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_packing");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_packing\n");
+   if (png_ptr == NULL) return;
    if (png_ptr->bit_depth < 8)
    {
       png_ptr->transformations |= PNG_PACK;
@@ -60,14 +51,12 @@ png_set_packing(png_structp png_ptr)
 #endif
 
 #if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-/* Turn on packed pixel swapping */
+/* turn on packed pixel swapping */
 void PNGAPI
 png_set_packswap(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_packswap");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_packswap\n");
+   if (png_ptr == NULL) return;
    if (png_ptr->bit_depth < 8)
       png_ptr->transformations |= PNG_PACKSWAP;
 }
@@ -77,10 +66,8 @@ png_set_packswap(png_structp png_ptr)
 void PNGAPI
 png_set_shift(png_structp png_ptr, png_color_8p true_bits)
 {
-   png_debug(1, "in png_set_shift");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_shift\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_SHIFT;
    png_ptr->shift = *true_bits;
 }
@@ -91,8 +78,7 @@ png_set_shift(png_structp png_ptr, png_color_8p true_bits)
 int PNGAPI
 png_set_interlace_handling(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_interlace handling");
-
+   png_debug(1, "in png_set_interlace handling\n");
    if (png_ptr && png_ptr->interlaced)
    {
       png_ptr->transformations |= PNG_INTERLACE;
@@ -112,16 +98,10 @@ png_set_interlace_handling(png_structp png_ptr)
 void PNGAPI
 png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
-   png_debug(1, "in png_set_filler");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_filler\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_FILLER;
-#ifdef PNG_LEGACY_SUPPORTED
    png_ptr->filler = (png_byte)filler;
-#else
-   png_ptr->filler = (png_uint_16)filler;
-#endif
    if (filler_loc == PNG_FILLER_AFTER)
       png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
    else
@@ -146,15 +126,13 @@ png_set_filler(png_structp png_ptr, png_uint_32 filler, int filler_loc)
    }
 }
 
-#ifndef PNG_1_0_X
+#if !defined(PNG_1_0_X)
 /* Added to libpng-1.2.7 */
 void PNGAPI
 png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 {
-   png_debug(1, "in png_set_add_alpha");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_add_alpha\n");
+   if (png_ptr == NULL) return;
    png_set_filler(png_ptr, filler, filler_loc);
    png_ptr->transformations |= PNG_ADD_ALPHA;
 }
@@ -167,10 +145,8 @@ png_set_add_alpha(png_structp png_ptr, png_uint_32 filler, int filler_loc)
 void PNGAPI
 png_set_swap_alpha(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_swap_alpha");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_swap_alpha\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_SWAP_ALPHA;
 }
 #endif
@@ -180,10 +156,8 @@ png_set_swap_alpha(png_structp png_ptr)
 void PNGAPI
 png_set_invert_alpha(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_invert_alpha");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_invert_alpha\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_INVERT_ALPHA;
 }
 #endif
@@ -192,23 +166,20 @@ png_set_invert_alpha(png_structp png_ptr)
 void PNGAPI
 png_set_invert_mono(png_structp png_ptr)
 {
-   png_debug(1, "in png_set_invert_mono");
-
-   if (png_ptr == NULL)
-      return;
+   png_debug(1, "in png_set_invert_mono\n");
+   if (png_ptr == NULL) return;
    png_ptr->transformations |= PNG_INVERT_MONO;
 }
 
-/* Invert monochrome grayscale data */
+/* invert monochrome grayscale data */
 void /* PRIVATE */
 png_do_invert(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_invert");
-
+   png_debug(1, "in png_do_invert\n");
   /* This test removed from libpng version 1.0.13 and 1.2.0:
    *   if (row_info->bit_depth == 1 &&
    */
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
    if (row == NULL || row_info == NULL)
      return;
 #endif
@@ -255,14 +226,13 @@ png_do_invert(png_row_infop row_info, png_bytep row)
 #endif
 
 #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Swaps byte order on 16 bit depth images */
+/* swaps byte order on 16 bit depth images */
 void /* PRIVATE */
 png_do_swap(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_swap");
-
+   png_debug(1, "in png_do_swap\n");
    if (
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
        row != NULL && row_info != NULL &&
 #endif
        row_info->bit_depth == 16)
@@ -387,14 +357,13 @@ static PNG_CONST png_byte fourbppswaptable[256] = {
    0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
 };
 
-/* Swaps pixel packing order within bytes */
+/* swaps pixel packing order within bytes */
 void /* PRIVATE */
 png_do_packswap(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_packswap");
-
+   png_debug(1, "in png_do_packswap\n");
    if (
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
        row != NULL && row_info != NULL &&
 #endif
        row_info->bit_depth < 8)
@@ -420,13 +389,12 @@ png_do_packswap(png_row_infop row_info, png_bytep row)
 
 #if defined(PNG_WRITE_FILLER_SUPPORTED) || \
     defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-/* Remove filler or alpha byte(s) */
+/* remove filler or alpha byte(s) */
 void /* PRIVATE */
 png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
 {
-   png_debug(1, "in png_do_strip_filler");
-
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+   png_debug(1, "in png_do_strip_filler\n");
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
    if (row != NULL && row_info != NULL)
 #endif
    {
@@ -436,9 +404,9 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
       png_uint_32 i;
 
       if ((row_info->color_type == PNG_COLOR_TYPE_RGB ||
-          (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
-          (flags & PNG_FLAG_STRIP_ALPHA))) &&
-          row_info->channels == 4)
+         (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
+         (flags & PNG_FLAG_STRIP_ALPHA))) &&
+         row_info->channels == 4)
       {
          if (row_info->bit_depth == 8)
          {
@@ -579,14 +547,13 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
 #endif
 
 #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Swaps red and blue bytes within a pixel */
+/* swaps red and blue bytes within a pixel */
 void /* PRIVATE */
 png_do_bgr(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_bgr");
-
+   png_debug(1, "in png_do_bgr\n");
    if (
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
        row != NULL && row_info != NULL &&
 #endif
        (row_info->color_type & PNG_COLOR_MASK_COLOR))
@@ -657,17 +624,15 @@ png_do_bgr(png_row_infop row_info, png_bytep row)
 #endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
 
 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
-    defined(PNG_LEGACY_SUPPORTED) || \
-    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
+    defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \
+    defined(PNG_LEGACY_SUPPORTED)
 void PNGAPI
 png_set_user_transform_info(png_structp png_ptr, png_voidp
    user_transform_ptr, int user_transform_depth, int user_transform_channels)
 {
-   png_debug(1, "in png_set_user_transform_info");
-
-   if (png_ptr == NULL)
-      return;
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+   png_debug(1, "in png_set_user_transform_info\n");
+   if (png_ptr == NULL) return;
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
    png_ptr->user_transform_ptr = user_transform_ptr;
    png_ptr->user_transform_depth = (png_byte)user_transform_depth;
    png_ptr->user_transform_channels = (png_byte)user_transform_channels;
@@ -687,9 +652,8 @@ png_set_user_transform_info(png_structp png_ptr, png_voidp
 png_voidp PNGAPI
 png_get_user_transform_ptr(png_structp png_ptr)
 {
-   if (png_ptr == NULL)
-      return (NULL);
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
+   if (png_ptr == NULL) return (NULL);
+#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
    return ((png_voidp)png_ptr->user_transform_ptr);
 #else
    return (NULL);

pngwio.c

@@ -1,15 +1,12 @@
 
 /* pngwio.c - functions for data output
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.30 [August 15, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
  *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
  * This file provides a location for all output.  Users who need
  * special handling are expected to write functions that have the same
  * arguments as these and perform similar functions, but that possibly
@@ -23,11 +20,10 @@
 #ifdef PNG_WRITE_SUPPORTED
 
 /* Write the data to whatever output you are using.  The default routine
- * writes to a file pointer.  Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered writes.  This should never be asked
- * to write more than 64K on a 16 bit machine.
- */
+   writes to a file pointer.  Note that this routine sometimes gets called
+   with very small lengths, so you should implement some kind of simple
+   buffering if you are using unbuffered writes.  This should never be asked
+   to write more than 64K on a 16 bit machine.  */
 
 void /* PRIVATE */
 png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
@@ -38,21 +34,19 @@ png_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
       png_error(png_ptr, "Call to NULL write function");
 }
 
-#ifndef PNG_NO_STDIO
+#if !defined(PNG_NO_STDIO)
 /* This is the function that does the actual writing of data.  If you are
- * not writing to a standard C stream, you should create a replacement
- * write_data function and use it at run time with png_set_write_fn(), rather
- * than changing the library.
- */
+   not writing to a standard C stream, you should create a replacement
+   write_data function and use it at run time with png_set_write_fn(), rather
+   than changing the library. */
 #ifndef USE_FAR_KEYWORD
 void PNGAPI
 png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
    png_uint_32 check;
 
-   if (png_ptr == NULL)
-      return;
-#ifdef _WIN32_WCE
+   if (png_ptr == NULL) return;
+#if defined(_WIN32_WCE)
    if ( !WriteFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
       check = 0;
 #else
@@ -62,10 +56,10 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
       png_error(png_ptr, "Write Error");
 }
 #else
-/* This is the model-independent version. Since the standard I/O library
- * can't handle far buffers in the medium and small models, we have to copy
- * the data.
- */
+/* this is the model-independent version. Since the standard I/O library
+   can't handle far buffers in the medium and small models, we have to copy
+   the data.
+*/
 
 #define NEAR_BUF_SIZE 1024
 #define MIN(a,b) (a <= b ? a : b)
@@ -77,14 +71,13 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
    png_byte *near_data;  /* Needs to be "png_byte *" instead of "png_bytep" */
    png_FILE_p io_ptr;
 
-   if (png_ptr == NULL)
-      return;
+   if (png_ptr == NULL) return;
    /* Check if data really is near. If so, use usual code. */
    near_data = (png_byte *)CVT_PTR_NOCHECK(data);
    io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
    if ((png_bytep)near_data == data)
    {
-#ifdef _WIN32_WCE
+#if defined(_WIN32_WCE)
       if ( !WriteFile(io_ptr, near_data, length, &check, NULL) )
          check = 0;
 #else
@@ -100,8 +93,8 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
       do
       {
          written = MIN(NEAR_BUF_SIZE, remaining);
-         png_memcpy(buf, data, written); /* Copy far buffer to near buffer */
-#ifdef _WIN32_WCE
+         png_memcpy(buf, data, written); /* copy far buffer to near buffer */
+#if defined(_WIN32_WCE)
          if ( !WriteFile(io_ptr, buf, written, &err, NULL) )
             err = 0;
 #else
@@ -109,10 +102,8 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #endif
          if (err != written)
             break;
-
          else
             check += err;
-
          data += written;
          remaining -= written;
       }
@@ -126,10 +117,9 @@ png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
 #endif
 
 /* This function is called to output any data pending writing (normally
- * to disk).  After png_flush is called, there should be no data pending
- * writing in any buffers.
- */
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
+   to disk).  After png_flush is called, there should be no data pending
+   writing in any buffers. */
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
 void /* PRIVATE */
 png_flush(png_structp png_ptr)
 {
@@ -137,76 +127,65 @@ png_flush(png_structp png_ptr)
       (*(png_ptr->output_flush_fn))(png_ptr);
 }
 
-#ifndef PNG_NO_STDIO
+#if !defined(PNG_NO_STDIO)
 void PNGAPI
 png_default_flush(png_structp png_ptr)
 {
-#ifndef _WIN32_WCE
+#if !defined(_WIN32_WCE)
    png_FILE_p io_ptr;
 #endif
-   if (png_ptr == NULL)
-      return;
-#ifndef _WIN32_WCE
+   if (png_ptr == NULL) return;
+#if !defined(_WIN32_WCE)
    io_ptr = (png_FILE_p)CVT_PTR((png_ptr->io_ptr));
-   fflush(io_ptr);
+   if (io_ptr != NULL)
+      fflush(io_ptr);
 #endif
 }
 #endif
 #endif
 
 /* This function allows the application to supply new output functions for
- * libpng if standard C streams aren't being used.
- *
- * This function takes as its arguments:
- * png_ptr       - pointer to a png output data structure
- * io_ptr        - pointer to user supplied structure containing info about
- *                 the output functions.  May be NULL.
- * write_data_fn - pointer to a new output function that takes as its
- *                 arguments a pointer to a png_struct, a pointer to
- *                 data to be written, and a 32-bit unsigned int that is
- *                 the number of bytes to be written.  The new write
- *                 function should call png_error(png_ptr, "Error msg")
- *                 to exit and output any fatal error messages.  May be
- *                 NULL, in which case libpng's default function will
- *                 be used.
- * flush_data_fn - pointer to a new flush function that takes as its
- *                 arguments a pointer to a png_struct.  After a call to
- *                 the flush function, there should be no data in any buffers
- *                 or pending transmission.  If the output method doesn't do
- *                 any buffering of ouput, a function prototype must still be
- *                 supplied although it doesn't have to do anything.  If
- *                 PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
- *                 time, output_flush_fn will be ignored, although it must be
- *                 supplied for compatibility.  May be NULL, in which case
- *                 libpng's default function will be used, if
- *                 PNG_WRITE_FLUSH_SUPPORTED is defined.  This is not
- *                 a good idea if io_ptr does not point to a standard
- *                 *FILE structure.
- */
+   libpng if standard C streams aren't being used.
+
+   This function takes as its arguments:
+   png_ptr       - pointer to a png output data structure
+   io_ptr        - pointer to user supplied structure containing info about
+                   the output functions.  May be NULL.
+   write_data_fn - pointer to a new output function that takes as its
+                   arguments a pointer to a png_struct, a pointer to
+                   data to be written, and a 32-bit unsigned int that is
+                   the number of bytes to be written.  The new write
+                   function should call png_error(png_ptr, "Error msg")
+                   to exit and output any fatal error messages.
+   flush_data_fn - pointer to a new flush function that takes as its
+                   arguments a pointer to a png_struct.  After a call to
+                   the flush function, there should be no data in any buffers
+                   or pending transmission.  If the output method doesn't do
+                   any buffering of ouput, a function prototype must still be
+                   supplied although it doesn't have to do anything.  If
+                   PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
+                   time, output_flush_fn will be ignored, although it must be
+                   supplied for compatibility. */
 void PNGAPI
 png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
    png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
 {
-   if (png_ptr == NULL)
-      return;
-
+   if (png_ptr == NULL) return;
    png_ptr->io_ptr = io_ptr;
 
-#ifndef PNG_NO_STDIO
+#if !defined(PNG_NO_STDIO)
    if (write_data_fn != NULL)
       png_ptr->write_data_fn = write_data_fn;
-
    else
       png_ptr->write_data_fn = png_default_write_data;
 #else
    png_ptr->write_data_fn = write_data_fn;
 #endif
 
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-#ifndef PNG_NO_STDIO
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#if !defined(PNG_NO_STDIO)
    if (output_flush_fn != NULL)
       png_ptr->output_flush_fn = output_flush_fn;
-
    else
       png_ptr->output_flush_fn = png_default_flush;
 #else
@@ -225,19 +204,17 @@ png_set_write_fn(png_structp png_ptr, png_voidp io_ptr,
    }
 }
 
-#ifdef USE_FAR_KEYWORD
-#ifdef _MSC_VER
+#if defined(USE_FAR_KEYWORD)
+#if defined(_MSC_VER)
 void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
 {
    void *near_ptr;
    void FAR *far_ptr;
    FP_OFF(near_ptr) = FP_OFF(ptr);
    far_ptr = (void FAR *)near_ptr;
-
    if (check != 0)
       if (FP_SEG(ptr) != FP_SEG(far_ptr))
          png_error(png_ptr, "segment lost in conversion");
-
    return(near_ptr);
 }
 #  else
@@ -247,11 +224,9 @@ void *png_far_to_near(png_structp png_ptr, png_voidp ptr, int check)
    void FAR *far_ptr;
    near_ptr = (void FAR *)ptr;
    far_ptr = (void FAR *)near_ptr;
-
    if (check != 0)
       if (far_ptr != ptr)
          png_error(png_ptr, "segment lost in conversion");
-
    return(near_ptr);
 }
 #   endif

pngwrite.c

@@ -1,17 +1,14 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * Last changed in libpng 1.2.37 [June 4, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.31 [August 19, 2008]
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2008 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
-/* Get internal access to png.h */
+/* get internal access to png.h */
 #define PNG_INTERNAL
 #include "png.h"
 #ifdef PNG_WRITE_SUPPORTED
@@ -28,12 +25,12 @@
 void PNGAPI
 png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 {
-   png_debug(1, "in png_write_info_before_PLTE");
+   png_debug(1, "in png_write_info_before_PLTE\n");
    if (png_ptr == NULL || info_ptr == NULL)
       return;
    if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
    {
-   png_write_sig(png_ptr); /* Write PNG signature */
+   png_write_sig(png_ptr); /* write PNG signature */
 #if defined(PNG_MNG_FEATURES_SUPPORTED)
    if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&(png_ptr->mng_features_permitted))
    {
@@ -41,7 +38,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
       png_ptr->mng_features_permitted=0;
    }
 #endif
-   /* Write IHDR information. */
+   /* write IHDR information. */
    png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
       info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
       info_ptr->filter_type,
@@ -50,9 +47,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 #else
       0);
 #endif
-   /* The rest of these check to see if the valid field has the appropriate
-    * flag set, and if it does, writes the chunk.
-    */
+   /* the rest of these check to see if the valid field has the appropriate
+      flag set, and if it does, writes the chunk. */
 #if defined(PNG_WRITE_gAMA_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_gAMA)
    {
@@ -101,14 +97,14 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
    if (info_ptr->unknown_chunks_num)
    {
-      png_unknown_chunk *up;
+       png_unknown_chunk *up;
 
-      png_debug(5, "writing extra chunks");
+       png_debug(5, "writing extra chunks\n");
 
-      for (up = info_ptr->unknown_chunks;
-           up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
-           up++)
-      {
+       for (up = info_ptr->unknown_chunks;
+            up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
+            up++)
+       {
          int keep=png_handle_as_unknown(png_ptr, up->name);
          if (keep != PNG_HANDLE_CHUNK_NEVER &&
             up->location && !(up->location & PNG_HAVE_PLTE) &&
@@ -120,7 +116,7 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
                png_warning(png_ptr, "Writing zero-length unknown chunk");
             png_write_chunk(png_ptr, up->name, up->data, up->size);
          }
-      }
+       }
    }
 #endif
       png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
@@ -134,7 +130,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
    int i;
 #endif
 
-   png_debug(1, "in png_write_info");
+   png_debug(1, "in png_write_info\n");
 
    if (png_ptr == NULL || info_ptr == NULL)
       return;
@@ -149,20 +145,20 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
 
 #if defined(PNG_WRITE_tRNS_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_tRNS)
-   {
-#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-      /* Invert the alpha channel (in tRNS) */
-      if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
-         info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
       {
-         int j;
-         for (j=0; j<(int)info_ptr->num_trans; j++)
-            info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
-      }
+#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
+         /* invert the alpha channel (in tRNS) */
+         if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
+            info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
+         {
+            int j;
+            for (j=0; j<(int)info_ptr->num_trans; j++)
+               info_ptr->trans[j] = (png_byte)(255 - info_ptr->trans[j]);
+         }
 #endif
       png_write_tRNS(png_ptr, info_ptr->trans, &(info_ptr->trans_values),
          info_ptr->num_trans, info_ptr->color_type);
-   }
+      }
 #endif
 #if defined(PNG_WRITE_bKGD_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_bKGD)
@@ -183,56 +179,49 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
          info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
          info_ptr->pcal_units, info_ptr->pcal_params);
 #endif
-
-#if defined(PNG_sCAL_SUPPORTED)
-   if (info_ptr->valid & PNG_INFO_sCAL)
 #if defined(PNG_WRITE_sCAL_SUPPORTED)
+   if (info_ptr->valid & PNG_INFO_sCAL)
 #if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO)
       png_write_sCAL(png_ptr, (int)info_ptr->scal_unit,
           info_ptr->scal_pixel_width, info_ptr->scal_pixel_height);
-#else /* !FLOATING_POINT */
+#else
 #ifdef PNG_FIXED_POINT_SUPPORTED
       png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
           info_ptr->scal_s_width, info_ptr->scal_s_height);
-#endif /* FIXED_POINT */
-#endif /* FLOATING_POINT */
-#else  /* !WRITE_sCAL */
+#else
       png_warning(png_ptr,
           "png_write_sCAL not supported; sCAL chunk not written.");
-#endif /* WRITE_sCAL */
-#endif /* sCAL */
-
+#endif
+#endif
+#endif
 #if defined(PNG_WRITE_pHYs_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_pHYs)
       png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
          info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
-#endif /* pHYs */
-
+#endif
 #if defined(PNG_WRITE_tIME_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_tIME)
    {
       png_write_tIME(png_ptr, &(info_ptr->mod_time));
       png_ptr->mode |= PNG_WROTE_tIME;
    }
-#endif /* tIME */
-
+#endif
 #if defined(PNG_WRITE_sPLT_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_sPLT)
      for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
        png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
-#endif /* sPLT */
-
+#endif
 #if defined(PNG_WRITE_TEXT_SUPPORTED)
    /* Check to see if we need to write text chunks */
    for (i = 0; i < info_ptr->num_text; i++)
    {
-      png_debug2(2, "Writing header text chunk %d, type %d", i,
+      png_debug2(2, "Writing header text chunk %d, type %d\n", i,
          info_ptr->text[i].compression);
-      /* An internationalized chunk? */
+      /* an internationalized chunk? */
       if (info_ptr->text[i].compression > 0)
       {
 #if defined(PNG_WRITE_iTXt_SUPPORTED)
-          /* Write international chunk */
+          /* write international chunk */
           png_write_iTXt(png_ptr,
                          info_ptr->text[i].compression,
                          info_ptr->text[i].key,
@@ -249,7 +238,7 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
       else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
       {
 #if defined(PNG_WRITE_zTXt_SUPPORTED)
-         /* Write compressed chunk */
+         /* write compressed chunk */
          png_write_zTXt(png_ptr, info_ptr->text[i].key,
             info_ptr->text[i].text, 0,
             info_ptr->text[i].compression);
@@ -262,26 +251,24 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
       else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
       {
 #if defined(PNG_WRITE_tEXt_SUPPORTED)
-         /* Write uncompressed chunk */
+         /* write uncompressed chunk */
          png_write_tEXt(png_ptr, info_ptr->text[i].key,
                          info_ptr->text[i].text,
                          0);
-         /* Mark this chunk as written */
-         info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
 #else
-         /* Can't get here */
          png_warning(png_ptr, "Unable to write uncompressed text");
 #endif
+         /* Mark this chunk as written */
+         info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
       }
    }
-#endif /* tEXt */
-
+#endif
 #if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
    if (info_ptr->unknown_chunks_num)
    {
        png_unknown_chunk *up;
 
-       png_debug(5, "writing extra chunks");
+       png_debug(5, "writing extra chunks\n");
 
        for (up = info_ptr->unknown_chunks;
             up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
@@ -309,35 +296,35 @@ png_write_info(png_structp png_ptr, png_infop info_ptr)
 void PNGAPI
 png_write_end(png_structp png_ptr, png_infop info_ptr)
 {
-   png_debug(1, "in png_write_end");
+   png_debug(1, "in png_write_end\n");
    if (png_ptr == NULL)
       return;
    if (!(png_ptr->mode & PNG_HAVE_IDAT))
       png_error(png_ptr, "No IDATs written into file");
 
-   /* See if user wants us to write information chunks */
+   /* see if user wants us to write information chunks */
    if (info_ptr != NULL)
    {
 #if defined(PNG_WRITE_TEXT_SUPPORTED)
-      int i; /* Local index variable */
+      int i; /* local index variable */
 #endif
 #if defined(PNG_WRITE_tIME_SUPPORTED)
-      /* Check to see if user has supplied a time chunk */
+      /* check to see if user has supplied a time chunk */
       if ((info_ptr->valid & PNG_INFO_tIME) &&
          !(png_ptr->mode & PNG_WROTE_tIME))
          png_write_tIME(png_ptr, &(info_ptr->mod_time));
 #endif
 #if defined(PNG_WRITE_TEXT_SUPPORTED)
-      /* Loop through comment chunks */
+      /* loop through comment chunks */
       for (i = 0; i < info_ptr->num_text; i++)
       {
-         png_debug2(2, "Writing trailer text chunk %d, type %d", i,
+         png_debug2(2, "Writing trailer text chunk %d, type %d\n", i,
             info_ptr->text[i].compression);
-         /* An internationalized chunk? */
+         /* an internationalized chunk? */
          if (info_ptr->text[i].compression > 0)
          {
 #if defined(PNG_WRITE_iTXt_SUPPORTED)
-             /* Write international chunk */
+             /* write international chunk */
              png_write_iTXt(png_ptr,
                          info_ptr->text[i].compression,
                          info_ptr->text[i].key,
@@ -353,7 +340,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
          else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
          {
 #if defined(PNG_WRITE_zTXt_SUPPORTED)
-            /* Write compressed chunk */
+            /* write compressed chunk */
             png_write_zTXt(png_ptr, info_ptr->text[i].key,
                info_ptr->text[i].text, 0,
                info_ptr->text[i].compression);
@@ -366,7 +353,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
          else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
          {
 #if defined(PNG_WRITE_tEXt_SUPPORTED)
-            /* Write uncompressed chunk */
+            /* write uncompressed chunk */
             png_write_tEXt(png_ptr, info_ptr->text[i].key,
                info_ptr->text[i].text, 0);
 #else
@@ -383,7 +370,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
    {
        png_unknown_chunk *up;
 
-       png_debug(5, "writing extra chunks");
+       png_debug(5, "writing extra chunks\n");
 
        for (up = info_ptr->unknown_chunks;
             up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
@@ -404,7 +391,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 
    png_ptr->mode |= PNG_AFTER_IDAT;
 
-   /* Write end of PNG file */
+   /* write end of PNG file */
    png_write_IEND(png_ptr);
    /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
     * and restored again in libpng-1.2.30, may cause some applications that
@@ -426,7 +413,7 @@ png_write_end(png_structp png_ptr, png_infop info_ptr)
 void PNGAPI
 png_convert_from_struct_tm(png_timep ptime, struct tm FAR * ttime)
 {
-   png_debug(1, "in png_convert_from_struct_tm");
+   png_debug(1, "in png_convert_from_struct_tm\n");
    ptime->year = (png_uint_16)(1900 + ttime->tm_year);
    ptime->month = (png_byte)(ttime->tm_mon + 1);
    ptime->day = (png_byte)ttime->tm_mday;
@@ -440,7 +427,7 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
 {
    struct tm *tbuf;
 
-   png_debug(1, "in png_convert_from_time_t");
+   png_debug(1, "in png_convert_from_time_t\n");
    tbuf = gmtime(&ttime);
    png_convert_from_struct_tm(ptime, tbuf);
 }
@@ -474,7 +461,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
 #endif
 #endif
    int i;
-   png_debug(1, "in png_create_write_struct");
+   png_debug(1, "in png_create_write_struct\n");
 #ifdef PNG_USER_MEM_SUPPORTED
    png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
       (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr);
@@ -484,7 +471,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    if (png_ptr == NULL)
       return (NULL);
 
-   /* Added at libpng-1.2.6 */
+   /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
@@ -555,7 +542,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
      }
    }
 
-   /* Initialize zbuf - compression buffer */
+   /* initialize zbuf - compression buffer */
    png_ptr->zbuf_size = PNG_ZBUF_SIZE;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
       (png_uint_32)png_ptr->zbuf_size);
@@ -649,7 +636,7 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 {
    png_structp png_ptr=*ptr_ptr;
 #ifdef PNG_SETJMP_SUPPORTED
-   jmp_buf tmp_jmp; /* To save current jump buffer */
+   jmp_buf tmp_jmp; /* to save current jump buffer */
 #endif
 
    int i = 0;
@@ -672,10 +659,10 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
      }
    } while (png_libpng_ver[i++]);
 
-   png_debug(1, "in png_write_init_3");
+   png_debug(1, "in png_write_init_3\n");
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Save jump buffer and error functions */
+   /* save jump buffer and error functions */
    png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
 #endif
 
@@ -686,24 +673,24 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
        *ptr_ptr = png_ptr;
      }
 
-   /* Reset all variables to 0 */
+   /* reset all variables to 0 */
    png_memset(png_ptr, 0, png_sizeof(png_struct));
 
-   /* Added at libpng-1.2.6 */
+   /* added at libpng-1.2.6 */
 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
    png_ptr->user_width_max=PNG_USER_WIDTH_MAX;
    png_ptr->user_height_max=PNG_USER_HEIGHT_MAX;
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Restore jump buffer */
+   /* restore jump buffer */
    png_memcpy(png_ptr->jmpbuf, tmp_jmp, png_sizeof(jmp_buf));
 #endif
 
    png_set_write_fn(png_ptr, png_voidp_NULL, png_rw_ptr_NULL,
       png_flush_ptr_NULL);
 
-   /* Initialize zbuf - compression buffer */
+   /* initialize zbuf - compression buffer */
    png_ptr->zbuf_size = PNG_ZBUF_SIZE;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
       (png_uint_32)png_ptr->zbuf_size);
@@ -723,15 +710,15 @@ void PNGAPI
 png_write_rows(png_structp png_ptr, png_bytepp row,
    png_uint_32 num_rows)
 {
-   png_uint_32 i; /* Row counter */
-   png_bytepp rp; /* Row pointer */
+   png_uint_32 i; /* row counter */
+   png_bytepp rp; /* row pointer */
 
-   png_debug(1, "in png_write_rows");
+   png_debug(1, "in png_write_rows\n");
 
    if (png_ptr == NULL)
       return;
 
-   /* Loop through the rows */
+   /* loop through the rows */
    for (i = 0, rp = row; i < num_rows; i++, rp++)
    {
       png_write_row(png_ptr, *rp);
@@ -744,26 +731,25 @@ png_write_rows(png_structp png_ptr, png_bytepp row,
 void PNGAPI
 png_write_image(png_structp png_ptr, png_bytepp image)
 {
-   png_uint_32 i; /* Row index */
-   int pass, num_pass; /* Pass variables */
-   png_bytepp rp; /* Points to current row */
+   png_uint_32 i; /* row index */
+   int pass, num_pass; /* pass variables */
+   png_bytepp rp; /* points to current row */
 
    if (png_ptr == NULL)
       return;
 
-   png_debug(1, "in png_write_image");
+   png_debug(1, "in png_write_image\n");
 #if defined(PNG_WRITE_INTERLACING_SUPPORTED)
-   /* Initialize interlace handling.  If image is not interlaced,
-    * this will set pass to 1
-    */
+   /* intialize interlace handling.  If image is not interlaced,
+      this will set pass to 1 */
    num_pass = png_set_interlace_handling(png_ptr);
 #else
    num_pass = 1;
 #endif
-   /* Loop through passes */
+   /* loop through passes */
    for (pass = 0; pass < num_pass; pass++)
    {
-      /* Loop through image */
+      /* loop through image */
       for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
       {
          png_write_row(png_ptr, *rp);
@@ -771,58 +757,58 @@ png_write_image(png_structp png_ptr, png_bytepp image)
    }
 }
 
-/* Called by user to write a row of image data */
+/* called by user to write a row of image data */
 void PNGAPI
 png_write_row(png_structp png_ptr, png_bytep row)
 {
    if (png_ptr == NULL)
       return;
-   png_debug2(1, "in png_write_row (row %ld, pass %d)",
+   png_debug2(1, "in png_write_row (row %ld, pass %d)\n",
       png_ptr->row_number, png_ptr->pass);
 
-   /* Initialize transformations and other stuff if first time */
+   /* initialize transformations and other stuff if first time */
    if (png_ptr->row_number == 0 && png_ptr->pass == 0)
    {
-      /* Make sure we wrote the header info */
-      if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
-         png_error(png_ptr,
-            "png_write_info was never called before png_write_row.");
+   /* make sure we wrote the header info */
+   if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
+      png_error(png_ptr,
+         "png_write_info was never called before png_write_row.");
 
-      /* Check for transforms that have been set but were defined out */
+   /* check for transforms that have been set but were defined out */
 #if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
-      if (png_ptr->transformations & PNG_INVERT_MONO)
-         png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_INVERT_MONO)
+      png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
-      if (png_ptr->transformations & PNG_FILLER)
-         png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_FILLER)
+      png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && defined(PNG_READ_PACKSWAP_SUPPORTED)
-      if (png_ptr->transformations & PNG_PACKSWAP)
-         png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_PACKSWAP)
+      png_warning(png_ptr, "PNG_WRITE_PACKSWAP_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
-      if (png_ptr->transformations & PNG_PACK)
-         png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_PACK)
+      png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
-      if (png_ptr->transformations & PNG_SHIFT)
-         png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_SHIFT)
+      png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
-      if (png_ptr->transformations & PNG_BGR)
-         png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_BGR)
+      png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined.");
 #endif
 #if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
-      if (png_ptr->transformations & PNG_SWAP_BYTES)
-         png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");
+   if (png_ptr->transformations & PNG_SWAP_BYTES)
+      png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined.");
 #endif
 
       png_write_start_row(png_ptr);
    }
 
 #if defined(PNG_WRITE_INTERLACING_SUPPORTED)
-   /* If interlaced and not interested in row, return */
+   /* if interlaced and not interested in row, return */
    if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
    {
       switch (png_ptr->pass)
@@ -880,7 +866,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
    }
 #endif
 
-   /* Set up row info for transformations */
+   /* set up row info for transformations */
    png_ptr->row_info.color_type = png_ptr->color_type;
    png_ptr->row_info.width = png_ptr->usr_width;
    png_ptr->row_info.channels = png_ptr->usr_channels;
@@ -891,25 +877,25 @@ png_write_row(png_structp png_ptr, png_bytep row)
    png_ptr->row_info.rowbytes = PNG_ROWBYTES(png_ptr->row_info.pixel_depth,
       png_ptr->row_info.width);
 
-   png_debug1(3, "row_info->color_type = %d", png_ptr->row_info.color_type);
-   png_debug1(3, "row_info->width = %lu", png_ptr->row_info.width);
-   png_debug1(3, "row_info->channels = %d", png_ptr->row_info.channels);
-   png_debug1(3, "row_info->bit_depth = %d", png_ptr->row_info.bit_depth);
-   png_debug1(3, "row_info->pixel_depth = %d", png_ptr->row_info.pixel_depth);
-   png_debug1(3, "row_info->rowbytes = %lu", png_ptr->row_info.rowbytes);
+   png_debug1(3, "row_info->color_type = %d\n", png_ptr->row_info.color_type);
+   png_debug1(3, "row_info->width = %lu\n", png_ptr->row_info.width);
+   png_debug1(3, "row_info->channels = %d\n", png_ptr->row_info.channels);
+   png_debug1(3, "row_info->bit_depth = %d\n", png_ptr->row_info.bit_depth);
+   png_debug1(3, "row_info->pixel_depth = %d\n", png_ptr->row_info.pixel_depth);
+   png_debug1(3, "row_info->rowbytes = %lu\n", png_ptr->row_info.rowbytes);
 
    /* Copy user's row into buffer, leaving room for filter byte. */
    png_memcpy_check(png_ptr, png_ptr->row_buf + 1, row,
       png_ptr->row_info.rowbytes);
 
 #if defined(PNG_WRITE_INTERLACING_SUPPORTED)
-   /* Handle interlacing */
+   /* handle interlacing */
    if (png_ptr->interlaced && png_ptr->pass < 6 &&
       (png_ptr->transformations & PNG_INTERLACE))
    {
       png_do_write_interlace(&(png_ptr->row_info),
          png_ptr->row_buf + 1, png_ptr->pass);
-      /* This should always get caught above, but still ... */
+      /* this should always get caught above, but still ... */
       if (!(png_ptr->row_info.width))
       {
          png_write_finish_row(png_ptr);
@@ -918,7 +904,7 @@ png_write_row(png_structp png_ptr, png_bytep row)
    }
 #endif
 
-   /* Handle other transformations */
+   /* handle other transformations */
    if (png_ptr->transformations)
       png_do_write_transformations(png_ptr);
 
@@ -952,34 +938,34 @@ png_write_row(png_structp png_ptr, png_bytep row)
 void PNGAPI
 png_set_flush(png_structp png_ptr, int nrows)
 {
-   png_debug(1, "in png_set_flush");
+   png_debug(1, "in png_set_flush\n");
    if (png_ptr == NULL)
       return;
    png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
 }
 
-/* Flush the current output buffers now */
+/* flush the current output buffers now */
 void PNGAPI
 png_write_flush(png_structp png_ptr)
 {
    int wrote_IDAT;
 
-   png_debug(1, "in png_write_flush");
+   png_debug(1, "in png_write_flush\n");
    if (png_ptr == NULL)
       return;
    /* We have already written out all of the data */
    if (png_ptr->row_number >= png_ptr->num_rows)
-      return;
+     return;
 
    do
    {
       int ret;
 
-      /* Compress the data */
+      /* compress the data */
       ret = deflate(&png_ptr->zstream, Z_SYNC_FLUSH);
       wrote_IDAT = 0;
 
-      /* Check for compression errors */
+      /* check for compression errors */
       if (ret != Z_OK)
       {
          if (png_ptr->zstream.msg != NULL)
@@ -990,7 +976,7 @@ png_write_flush(png_structp png_ptr)
 
       if (!(png_ptr->zstream.avail_out))
       {
-         /* Write the IDAT and reset the zlib output buffer */
+         /* write the IDAT and reset the zlib output buffer */
          png_write_IDAT(png_ptr, png_ptr->zbuf,
                         png_ptr->zbuf_size);
          png_ptr->zstream.next_out = png_ptr->zbuf;
@@ -1002,7 +988,7 @@ png_write_flush(png_structp png_ptr)
    /* If there is any data left to be output, write it into a new IDAT */
    if (png_ptr->zbuf_size != png_ptr->zstream.avail_out)
    {
-      /* Write the IDAT and reset the zlib output buffer */
+      /* write the IDAT and reset the zlib output buffer */
       png_write_IDAT(png_ptr, png_ptr->zbuf,
                      png_ptr->zbuf_size - png_ptr->zstream.avail_out);
       png_ptr->zstream.next_out = png_ptr->zbuf;
@@ -1013,7 +999,7 @@ png_write_flush(png_structp png_ptr)
 }
 #endif /* PNG_WRITE_FLUSH_SUPPORTED */
 
-/* Free all memory used by the write */
+/* free all memory used by the write */
 void PNGAPI
 png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
 {
@@ -1024,7 +1010,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
    png_voidp mem_ptr = NULL;
 #endif
 
-   png_debug(1, "in png_destroy_write_struct");
+   png_debug(1, "in png_destroy_write_struct\n");
    if (png_ptr_ptr != NULL)
    {
       png_ptr = *png_ptr_ptr;
@@ -1089,7 +1075,7 @@ void /* PRIVATE */
 png_write_destroy(png_structp png_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
-   jmp_buf tmp_jmp; /* Save jump buffer */
+   jmp_buf tmp_jmp; /* save jump buffer */
 #endif
    png_error_ptr error_fn;
    png_error_ptr warning_fn;
@@ -1098,11 +1084,11 @@ png_write_destroy(png_structp png_ptr)
    png_free_ptr free_fn;
 #endif
 
-   png_debug(1, "in png_write_destroy");
-   /* Free any memory zlib uses */
+   png_debug(1, "in png_write_destroy\n");
+   /* free any memory zlib uses */
    deflateEnd(&png_ptr->zstream);
 
-   /* Free our memory.  png_free checks NULL for us. */
+   /* 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_FILTER
@@ -1126,7 +1112,7 @@ png_write_destroy(png_structp png_ptr)
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
-   /* Reset structure */
+   /* reset structure */
    png_memcpy(tmp_jmp, png_ptr->jmpbuf, png_sizeof(jmp_buf));
 #endif
 
@@ -1155,7 +1141,7 @@ png_write_destroy(png_structp png_ptr)
 void PNGAPI
 png_set_filter(png_structp png_ptr, int method, int filters)
 {
-   png_debug(1, "in png_set_filter");
+   png_debug(1, "in png_set_filter\n");
    if (png_ptr == NULL)
       return;
 #if defined(PNG_MNG_FEATURES_SUPPORTED)
@@ -1278,7 +1264,7 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
 {
    int i;
 
-   png_debug(1, "in png_set_filter_heuristics");
+   png_debug(1, "in png_set_filter_heuristics\n");
    if (png_ptr == NULL)
       return;
    if (heuristic_method >= PNG_FILTER_HEURISTIC_LAST)
@@ -1392,7 +1378,7 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
 void PNGAPI
 png_set_compression_level(png_structp png_ptr, int level)
 {
-   png_debug(1, "in png_set_compression_level");
+   png_debug(1, "in png_set_compression_level\n");
    if (png_ptr == NULL)
       return;
    png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_LEVEL;
@@ -1402,7 +1388,7 @@ png_set_compression_level(png_structp png_ptr, int level)
 void PNGAPI
 png_set_compression_mem_level(png_structp png_ptr, int mem_level)
 {
-   png_debug(1, "in png_set_compression_mem_level");
+   png_debug(1, "in png_set_compression_mem_level\n");
    if (png_ptr == NULL)
       return;
    png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL;
@@ -1412,7 +1398,7 @@ png_set_compression_mem_level(png_structp png_ptr, int mem_level)
 void PNGAPI
 png_set_compression_strategy(png_structp png_ptr, int strategy)
 {
-   png_debug(1, "in png_set_compression_strategy");
+   png_debug(1, "in png_set_compression_strategy\n");
    if (png_ptr == NULL)
       return;
    png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
@@ -1429,7 +1415,7 @@ png_set_compression_window_bits(png_structp png_ptr, int window_bits)
    else if (window_bits < 8)
       png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
 #ifndef WBITS_8_OK
-   /* Avoid libpng bug with 256-byte windows */
+   /* avoid libpng bug with 256-byte windows */
    if (window_bits == 8)
      {
        png_warning(png_ptr, "Compression window is being reset to 512");
@@ -1443,7 +1429,7 @@ png_set_compression_window_bits(png_structp png_ptr, int window_bits)
 void PNGAPI
 png_set_compression_method(png_structp png_ptr, int method)
 {
-   png_debug(1, "in png_set_compression_method");
+   png_debug(1, "in png_set_compression_method\n");
    if (png_ptr == NULL)
       return;
    if (method != 8)
@@ -1465,7 +1451,7 @@ void PNGAPI
 png_set_write_user_transform_fn(png_structp png_ptr, png_user_transform_ptr
    write_user_transform_fn)
 {
-   png_debug(1, "in png_set_write_user_transform_fn");
+   png_debug(1, "in png_set_write_user_transform_fn\n");
    if (png_ptr == NULL)
       return;
    png_ptr->transformations |= PNG_USER_TRANSFORM;
@@ -1482,9 +1468,9 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 #if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-   /* Invert the alpha channel from opacity to transparency */
+   /* invert the alpha channel from opacity to transparency */
    if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
-      png_set_invert_alpha(png_ptr);
+       png_set_invert_alpha(png_ptr);
 #endif
 
    /* Write the file header information. */
@@ -1493,9 +1479,9 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
    /* ------ these transformations don't touch the info structure ------- */
 
 #if defined(PNG_WRITE_INVERT_SUPPORTED)
-   /* Invert monochrome pixels */
+   /* invert monochrome pixels */
    if (transforms & PNG_TRANSFORM_INVERT_MONO)
-      png_set_invert_mono(png_ptr);
+       png_set_invert_mono(png_ptr);
 #endif
 
 #if defined(PNG_WRITE_SHIFT_SUPPORTED)
@@ -1504,57 +1490,57 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
     */
    if ((transforms & PNG_TRANSFORM_SHIFT)
                && (info_ptr->valid & PNG_INFO_sBIT))
-      png_set_shift(png_ptr, &info_ptr->sig_bit);
+       png_set_shift(png_ptr, &info_ptr->sig_bit);
 #endif
 
 #if defined(PNG_WRITE_PACK_SUPPORTED)
-   /* Pack pixels into bytes */
+   /* pack pixels into bytes */
    if (transforms & PNG_TRANSFORM_PACKING)
        png_set_packing(png_ptr);
 #endif
 
 #if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-   /* Swap location of alpha bytes from ARGB to RGBA */
+   /* swap location of alpha bytes from ARGB to RGBA */
    if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
-      png_set_swap_alpha(png_ptr);
+       png_set_swap_alpha(png_ptr);
 #endif
 
 #if defined(PNG_WRITE_FILLER_SUPPORTED)
-   /* Pack XRGB/RGBX/ARGB/RGBA into * RGB (4 channels -> 3 channels) */
-   if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
-      png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
-   else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
-      png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
+   /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
+    * RGB (4 channels -> 3 channels). The second parameter is not used.
+    */
+   if (transforms & PNG_TRANSFORM_STRIP_FILLER)
+       png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
 #endif
 
 #if defined(PNG_WRITE_BGR_SUPPORTED)
-   /* Flip BGR pixels to RGB */
+   /* flip BGR pixels to RGB */
    if (transforms & PNG_TRANSFORM_BGR)
-      png_set_bgr(png_ptr);
+       png_set_bgr(png_ptr);
 #endif
 
 #if defined(PNG_WRITE_SWAP_SUPPORTED)
-   /* Swap bytes of 16-bit files to most significant byte first */
+   /* swap bytes of 16-bit files to most significant byte first */
    if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
-      png_set_swap(png_ptr);
+       png_set_swap(png_ptr);
 #endif
 
 #if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-   /* Swap bits of 1, 2, 4 bit packed pixel formats */
+   /* swap bits of 1, 2, 4 bit packed pixel formats */
    if (transforms & PNG_TRANSFORM_PACKSWAP)
-      png_set_packswap(png_ptr);
+       png_set_packswap(png_ptr);
 #endif
 
    /* ----------------------- end of transformations ------------------- */
 
-   /* Write the bits */
+   /* write the bits */
    if (info_ptr->valid & PNG_INFO_IDAT)
        png_write_image(png_ptr, info_ptr->row_pointers);
 
    /* It is REQUIRED to call this to finish writing the rest of the file */
    png_write_end(png_ptr, info_ptr);
 
-   transforms = transforms; /* Quiet compiler warnings */
+   transforms = transforms; /* quiet compiler warnings */
    params = params;
 }
 #endif

pngwtran.c

@@ -1,14 +1,11 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * Last changed in libpng 1.2.41 [October 11, 2009]
- * Copyright (c) 1998-2009 Glenn Randers-Pehrson
+ * Last changed in libpng 1.2.9 April 14, 2006
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2006 Glenn Randers-Pehrson
  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
  */
 
 #define PNG_INTERNAL
@@ -21,15 +18,15 @@
 void /* PRIVATE */
 png_do_write_transformations(png_structp png_ptr)
 {
-   png_debug(1, "in png_do_write_transformations");
+   png_debug(1, "in png_do_write_transformations\n");
 
    if (png_ptr == NULL)
       return;
 
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
+#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
    if (png_ptr->transformations & PNG_USER_TRANSFORM)
       if (png_ptr->write_user_transform_fn != NULL)
-        (*(png_ptr->write_user_transform_fn)) /* User write transform function */
+        (*(png_ptr->write_user_transform_fn)) /* user write transform function */
           (png_ptr,                    /* png_ptr */
            &(png_ptr->row_info),       /* row_info:     */
              /*  png_uint_32 width;          width of row */
@@ -40,48 +37,48 @@ png_do_write_transformations(png_structp png_ptr)
              /*  png_byte pixel_depth;       bits per pixel (depth*channels) */
            png_ptr->row_buf + 1);      /* start of pixel data for row */
 #endif
-#ifdef PNG_WRITE_FILLER_SUPPORTED
+#if defined(PNG_WRITE_FILLER_SUPPORTED)
    if (png_ptr->transformations & PNG_FILLER)
       png_do_strip_filler(&(png_ptr->row_info), png_ptr->row_buf + 1,
          png_ptr->flags);
 #endif
-#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
+#if defined(PNG_WRITE_PACKSWAP_SUPPORTED)
    if (png_ptr->transformations & PNG_PACKSWAP)
       png_do_packswap(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#ifdef PNG_WRITE_PACK_SUPPORTED
+#if defined(PNG_WRITE_PACK_SUPPORTED)
    if (png_ptr->transformations & PNG_PACK)
       png_do_pack(&(png_ptr->row_info), png_ptr->row_buf + 1,
          (png_uint_32)png_ptr->bit_depth);
 #endif
-#ifdef PNG_WRITE_SWAP_SUPPORTED
+#if defined(PNG_WRITE_SWAP_SUPPORTED)
    if (png_ptr->transformations & PNG_SWAP_BYTES)
       png_do_swap(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
+#if defined(PNG_WRITE_SHIFT_SUPPORTED)
    if (png_ptr->transformations & PNG_SHIFT)
       png_do_shift(&(png_ptr->row_info), png_ptr->row_buf + 1,
          &(png_ptr->shift));
 #endif
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
    if (png_ptr->transformations & PNG_SWAP_ALPHA)
       png_do_write_swap_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
    if (png_ptr->transformations & PNG_INVERT_ALPHA)
       png_do_write_invert_alpha(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#ifdef PNG_WRITE_BGR_SUPPORTED
+#if defined(PNG_WRITE_BGR_SUPPORTED)
    if (png_ptr->transformations & PNG_BGR)
       png_do_bgr(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
-#ifdef PNG_WRITE_INVERT_SUPPORTED
+#if defined(PNG_WRITE_INVERT_SUPPORTED)
    if (png_ptr->transformations & PNG_INVERT_MONO)
       png_do_invert(&(png_ptr->row_info), png_ptr->row_buf + 1);
 #endif
 }
 
-#ifdef PNG_WRITE_PACK_SUPPORTED
+#if defined(PNG_WRITE_PACK_SUPPORTED)
 /* Pack pixels into bytes.  Pass the true bit depth in bit_depth.  The
  * row_info bit depth should be 8 (one pixel per byte).  The channels
  * should be 1 (this only happens on grayscale and paletted images).
@@ -89,10 +86,9 @@ png_do_write_transformations(png_structp png_ptr)
 void /* PRIVATE */
 png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
 {
-   png_debug(1, "in png_do_pack");
-
+   png_debug(1, "in png_do_pack\n");
    if (row_info->bit_depth == 8 &&
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
        row != NULL && row_info != NULL &&
 #endif
       row_info->channels == 1)
@@ -205,7 +201,7 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
 }
 #endif
 
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
+#if defined(PNG_WRITE_SHIFT_SUPPORTED)
 /* Shift pixel values to take advantage of whole range.  Pass the
  * true number of bits in bit_depth.  The row should be packed
  * according to row_info->bit_depth.  Thus, if you had a row of
@@ -216,9 +212,8 @@ png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
 void /* PRIVATE */
 png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
 {
-   png_debug(1, "in png_do_shift");
-
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+   png_debug(1, "in png_do_shift\n");
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
    if (row != NULL && row_info != NULL &&
 #else
    if (
@@ -253,7 +248,7 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
          channels++;
       }
 
-      /* With low row depths, could only be grayscale, so one channel */
+      /* with low row depths, could only be grayscale, so one channel */
       if (row_info->bit_depth < 8)
       {
          png_bytep bp = row;
@@ -337,13 +332,12 @@ png_do_shift(png_row_infop row_info, png_bytep row, png_color_8p bit_depth)
 }
 #endif
 
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
+#if defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
 void /* PRIVATE */
 png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_write_swap_alpha");
-
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+   png_debug(1, "in png_do_write_swap_alpha\n");
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
    if (row != NULL && row_info != NULL)
 #endif
    {
@@ -426,13 +420,12 @@ png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
 }
 #endif
 
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
+#if defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
 void /* PRIVATE */
 png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_write_invert_alpha");
-
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+   png_debug(1, "in png_do_write_invert_alpha\n");
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
    if (row != NULL && row_info != NULL)
 #endif
    {
@@ -446,7 +439,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
             png_uint_32 row_width = row_info->width;
             for (i = 0, sp = dp = row; i < row_width; i++)
             {
-               /* Does nothing
+               /* does nothing
                *(dp++) = *(sp++);
                *(dp++) = *(sp++);
                *(dp++) = *(sp++);
@@ -464,7 +457,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 
             for (i = 0, sp = dp = row; i < row_width; i++)
             {
-               /* Does nothing
+               /* does nothing
                *(dp++) = *(sp++);
                *(dp++) = *(sp++);
                *(dp++) = *(sp++);
@@ -502,7 +495,7 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 
             for (i = 0, sp = dp = row; i < row_width; i++)
             {
-               /* Does nothing
+               /* does nothing
                *(dp++) = *(sp++);
                *(dp++) = *(sp++);
                */
@@ -516,15 +509,14 @@ png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
 }
 #endif
 
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-/* Undoes intrapixel differencing  */
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
+/* undoes intrapixel differencing  */
 void /* PRIVATE */
 png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
 {
-   png_debug(1, "in png_do_write_intrapixel");
-
+   png_debug(1, "in png_do_write_intrapixel\n");
    if (
-#ifdef PNG_USELESS_TESTS_SUPPORTED
+#if defined(PNG_USELESS_TESTS_SUPPORTED)
        row != NULL && row_info != NULL &&
 #endif
        (row_info->color_type & PNG_COLOR_MASK_COLOR))

projects/visualc6/README.txt

@@ -31,11 +31,11 @@ To use:
 
 This project builds the libpng binaries as follows:
 
-* 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_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_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

@@ -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\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
 
@@ -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\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Release"
 
@@ -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\libpng13.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_ASM_Release\libpng10.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Release"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL ASM Debug"
 
@@ -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\libpng13d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
+# ADD LINK32 zlib1d.lib /nologo /dll /debug /machine:I386 /out:"Win32_DLL_ASM_Debug\libpng10d.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_ASM_Debug"
 
 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL VB"
 
@@ -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\libpng13vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
+# ADD LINK32 zlib1.lib /nologo /dll /machine:I386 /out:"Win32_DLL_VB\libpng10vb.dll" /libpath:"..\..\..\zlib\projects\visualc6\Win32_DLL_Release"
 # Begin Special Build Tool
 OutDir=.\Win32_DLL_VB
-TargetName=libpng13vb
+TargetName=libpng10vb
 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

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

projects/visualc71/README.txt

@@ -32,11 +32,11 @@ To use:
 
 This project builds the libpng binaries as follows:
 
-* Win32_DLL_Release\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_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_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

@@ -30,7 +30,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng13.dll"
+				OutputFile="$(OutDir)/libpng10.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -78,7 +78,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng13d.dll"
+				OutputFile="$(OutDir)/libpng10d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -126,7 +126,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng13.dll"
+				OutputFile="$(OutDir)/libpng10.dll"
 				LinkIncremental="1"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"/>
 			<Tool
@@ -175,7 +175,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng13d.dll"
+				OutputFile="$(OutDir)/libpng10d.dll"
 				ModuleDefinitionFile="..\..\scripts\pngw32.def"
 				GenerateDebugInformation="TRUE"/>
 			<Tool
@@ -224,7 +224,7 @@
 				Name="VCCustomBuildTool"/>
 			<Tool
 				Name="VCLinkerTool"
-				OutputFile="$(OutDir)/libpng13vb.dll"
+				OutputFile="$(OutDir)/libpng10vb.dll"
 				LinkIncremental="1"/>
 			<Tool
 				Name="VCMIDLTool"/>

projects/visualc71/pngtest.vcproj

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

projects/xcode/Info.plist

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
-<plist version="1.0">
-<dict>
-	<key>CFBundleDevelopmentRegion</key>
-	<string>English</string>
-	<key>CFBundleExecutable</key>
-	<string>libpng</string>
-	<key>CFBundleIconFile</key>
-	<string></string>
-	<key>CFBundleIdentifier</key>
-	<string>com.apple.carbonframeworktemplate</string>
-	<key>CFBundleInfoDictionaryVersion</key>
-	<string>6.0</string>
-	<key>CFBundlePackageType</key>
-	<string>FMWK</string>
-	<key>CFBundleSignature</key>
-	<string>????</string>
-	<key>CFBundleVersion</key>
-	<string>1.0</string>
-        <key>CFBundleShortVersionString</key>
-        <string>1.0</string>
-	<key>CSResourcesFileMapped</key>
-	<true/>
-</dict>
-</plist>

projects/xcode/libpng.xcodeproj/.gitignore

@@ -1,2 +0,0 @@
-*.mode1*
-*.pbxuser

projects/xcode/libpng.xcodeproj/project.pbxproj

@@ -1,349 +0,0 @@
-// !$*UTF8*$!
-{
-	archiveVersion = 1;
-	classes = {
-	};
-	objectVersion = 44;
-	objects = {
-
-/* Begin PBXBuildFile section */
-		14461C7109C3C37F005840C0 /* png.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C5D09C3C37F005840C0 /* png.c */; };
-		14461C7209C3C37F005840C0 /* png.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5E09C3C37F005840C0 /* png.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		14461C7309C3C37F005840C0 /* pngconf.h in Headers */ = {isa = PBXBuildFile; fileRef = 14461C5F09C3C37F005840C0 /* pngconf.h */; settings = {ATTRIBUTES = (Public, ); }; };
-		14461C7409C3C37F005840C0 /* pngerror.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6009C3C37F005840C0 /* pngerror.c */; };
-		14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6109C3C37F005840C0 /* pnggccrd.c */; };
-		14461C7609C3C37F005840C0 /* pngget.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6209C3C37F005840C0 /* pngget.c */; };
-		14461C7709C3C37F005840C0 /* pngmem.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6309C3C37F005840C0 /* pngmem.c */; };
-		14461C7809C3C37F005840C0 /* pngpread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6409C3C37F005840C0 /* pngpread.c */; };
-		14461C7909C3C37F005840C0 /* pngread.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6509C3C37F005840C0 /* pngread.c */; };
-		14461C7A09C3C37F005840C0 /* pngrio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6609C3C37F005840C0 /* pngrio.c */; };
-		14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6709C3C37F005840C0 /* pngrtran.c */; };
-		14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6809C3C37F005840C0 /* pngrutil.c */; };
-		14461C7D09C3C37F005840C0 /* pngset.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6909C3C37F005840C0 /* pngset.c */; };
-		14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6B09C3C37F005840C0 /* pngtrans.c */; };
-		14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6C09C3C37F005840C0 /* pngvcrd.c */; };
-		14461C8109C3C37F005840C0 /* pngwio.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6D09C3C37F005840C0 /* pngwio.c */; };
-		14461C8209C3C37F005840C0 /* pngwrite.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6E09C3C37F005840C0 /* pngwrite.c */; };
-		14461C8309C3C37F005840C0 /* pngwtran.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C6F09C3C37F005840C0 /* pngwtran.c */; };
-		14461C8409C3C37F005840C0 /* pngwutil.c in Sources */ = {isa = PBXBuildFile; fileRef = 14461C7009C3C37F005840C0 /* pngwutil.c */; };
-/* End PBXBuildFile section */
-
-/* Begin PBXFileReference section */
-		14461C5D09C3C37F005840C0 /* png.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = png.c; path = ../../png.c; sourceTree = SOURCE_ROOT; };
-		14461C5E09C3C37F005840C0 /* png.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = png.h; path = ../../png.h; sourceTree = SOURCE_ROOT; };
-		14461C5F09C3C37F005840C0 /* pngconf.h */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.h; name = pngconf.h; path = ../../pngconf.h; sourceTree = SOURCE_ROOT; };
-		14461C6009C3C37F005840C0 /* pngerror.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngerror.c; path = ../../pngerror.c; sourceTree = SOURCE_ROOT; };
-		14461C6109C3C37F005840C0 /* pnggccrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pnggccrd.c; path = ../../pnggccrd.c; sourceTree = SOURCE_ROOT; };
-		14461C6209C3C37F005840C0 /* pngget.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngget.c; path = ../../pngget.c; sourceTree = SOURCE_ROOT; };
-		14461C6309C3C37F005840C0 /* pngmem.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngmem.c; path = ../../pngmem.c; sourceTree = SOURCE_ROOT; };
-		14461C6409C3C37F005840C0 /* pngpread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngpread.c; path = ../../pngpread.c; sourceTree = SOURCE_ROOT; };
-		14461C6509C3C37F005840C0 /* pngread.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngread.c; path = ../../pngread.c; sourceTree = SOURCE_ROOT; };
-		14461C6609C3C37F005840C0 /* pngrio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrio.c; path = ../../pngrio.c; sourceTree = SOURCE_ROOT; };
-		14461C6709C3C37F005840C0 /* pngrtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrtran.c; path = ../../pngrtran.c; sourceTree = SOURCE_ROOT; };
-		14461C6809C3C37F005840C0 /* pngrutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngrutil.c; path = ../../pngrutil.c; sourceTree = SOURCE_ROOT; };
-		14461C6909C3C37F005840C0 /* pngset.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngset.c; path = ../../pngset.c; sourceTree = SOURCE_ROOT; };
-		14461C6B09C3C37F005840C0 /* pngtrans.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngtrans.c; path = ../../pngtrans.c; sourceTree = SOURCE_ROOT; };
-		14461C6C09C3C37F005840C0 /* pngvcrd.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngvcrd.c; path = ../../pngvcrd.c; sourceTree = SOURCE_ROOT; };
-		14461C6D09C3C37F005840C0 /* pngwio.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwio.c; path = ../../pngwio.c; sourceTree = SOURCE_ROOT; };
-		14461C6E09C3C37F005840C0 /* pngwrite.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwrite.c; path = ../../pngwrite.c; sourceTree = SOURCE_ROOT; };
-		14461C6F09C3C37F005840C0 /* pngwtran.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwtran.c; path = ../../pngwtran.c; sourceTree = SOURCE_ROOT; };
-		14461C7009C3C37F005840C0 /* pngwutil.c */ = {isa = PBXFileReference; fileEncoding = 30; lastKnownFileType = sourcecode.c.c; name = pngwutil.c; path = ../../pngwutil.c; sourceTree = SOURCE_ROOT; };
-		8D07F2C70486CC7A007CD1D0 /* Info.plist */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.plist; path = Info.plist; sourceTree = "<group>"; };
-		8D07F2C80486CC7A007CD1D0 /* libpng.framework */ = {isa = PBXFileReference; explicitFileType = wrapper.framework; includeInIndex = 0; path = libpng.framework; sourceTree = BUILT_PRODUCTS_DIR; };
-/* End PBXFileReference section */
-
-/* Begin PBXFrameworksBuildPhase section */
-		8D07F2C30486CC7A007CD1D0 /* Frameworks */ = {
-			isa = PBXFrameworksBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXFrameworksBuildPhase section */
-
-/* Begin PBXGroup section */
-		034768DDFF38A45A11DB9C8B /* Products */ = {
-			isa = PBXGroup;
-			children = (
-				8D07F2C80486CC7A007CD1D0 /* libpng.framework */,
-			);
-			name = Products;
-			sourceTree = "<group>";
-		};
-		0867D691FE84028FC02AAC07 /* libpng */ = {
-			isa = PBXGroup;
-			children = (
-				08FB77ACFE841707C02AAC07 /* Source */,
-				089C1665FE841158C02AAC07 /* Resources */,
-				034768DDFF38A45A11DB9C8B /* Products */,
-			);
-			name = libpng;
-			sourceTree = "<group>";
-		};
-		089C1665FE841158C02AAC07 /* Resources */ = {
-			isa = PBXGroup;
-			children = (
-				8D07F2C70486CC7A007CD1D0 /* Info.plist */,
-			);
-			name = Resources;
-			sourceTree = "<group>";
-		};
-		08FB77ACFE841707C02AAC07 /* Source */ = {
-			isa = PBXGroup;
-			children = (
-				14461C5D09C3C37F005840C0 /* png.c */,
-				14461C5E09C3C37F005840C0 /* png.h */,
-				14461C5F09C3C37F005840C0 /* pngconf.h */,
-				14461C6009C3C37F005840C0 /* pngerror.c */,
-				14461C6109C3C37F005840C0 /* pnggccrd.c */,
-				14461C6209C3C37F005840C0 /* pngget.c */,
-				14461C6309C3C37F005840C0 /* pngmem.c */,
-				14461C6409C3C37F005840C0 /* pngpread.c */,
-				14461C6509C3C37F005840C0 /* pngread.c */,
-				14461C6609C3C37F005840C0 /* pngrio.c */,
-				14461C6709C3C37F005840C0 /* pngrtran.c */,
-				14461C6809C3C37F005840C0 /* pngrutil.c */,
-				14461C6909C3C37F005840C0 /* pngset.c */,
-				14461C6B09C3C37F005840C0 /* pngtrans.c */,
-				14461C6C09C3C37F005840C0 /* pngvcrd.c */,
-				14461C6D09C3C37F005840C0 /* pngwio.c */,
-				14461C6E09C3C37F005840C0 /* pngwrite.c */,
-				14461C6F09C3C37F005840C0 /* pngwtran.c */,
-				14461C7009C3C37F005840C0 /* pngwutil.c */,
-			);
-			name = Source;
-			sourceTree = "<group>";
-		};
-/* End PBXGroup section */
-
-/* Begin PBXHeadersBuildPhase section */
-		8D07F2BD0486CC7A007CD1D0 /* Headers */ = {
-			isa = PBXHeadersBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				14461C7209C3C37F005840C0 /* png.h in Headers */,
-				14461C7309C3C37F005840C0 /* pngconf.h in Headers */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXHeadersBuildPhase section */
-
-/* Begin PBXNativeTarget section */
-		8D07F2BC0486CC7A007CD1D0 /* libpng */ = {
-			isa = PBXNativeTarget;
-			buildConfigurationList = 4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */;
-			buildPhases = (
-				8D07F2BD0486CC7A007CD1D0 /* Headers */,
-				8D07F2BF0486CC7A007CD1D0 /* Resources */,
-				8D07F2C10486CC7A007CD1D0 /* Sources */,
-				8D07F2C30486CC7A007CD1D0 /* Frameworks */,
-				8D07F2C50486CC7A007CD1D0 /* Rez */,
-			);
-			buildRules = (
-			);
-			dependencies = (
-			);
-			name = libpng;
-			productInstallPath = "$(HOME)/Library/Frameworks";
-			productName = libpng;
-			productReference = 8D07F2C80486CC7A007CD1D0 /* libpng.framework */;
-			productType = "com.apple.product-type.framework";
-		};
-/* End PBXNativeTarget section */
-
-/* Begin PBXProject section */
-		0867D690FE84028FC02AAC07 /* Project object */ = {
-			isa = PBXProject;
-			buildConfigurationList = 4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */;
-			compatibilityVersion = "Xcode 2.4";
-			hasScannedForEncodings = 1;
-			mainGroup = 0867D691FE84028FC02AAC07 /* libpng */;
-			productRefGroup = 034768DDFF38A45A11DB9C8B /* Products */;
-			projectDirPath = "";
-			projectRoot = ../..;
-			targets = (
-				8D07F2BC0486CC7A007CD1D0 /* libpng */,
-			);
-		};
-/* End PBXProject section */
-
-/* Begin PBXResourcesBuildPhase section */
-		8D07F2BF0486CC7A007CD1D0 /* Resources */ = {
-			isa = PBXResourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXResourcesBuildPhase section */
-
-/* Begin PBXRezBuildPhase section */
-		8D07F2C50486CC7A007CD1D0 /* Rez */ = {
-			isa = PBXRezBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXRezBuildPhase section */
-
-/* Begin PBXSourcesBuildPhase section */
-		8D07F2C10486CC7A007CD1D0 /* Sources */ = {
-			isa = PBXSourcesBuildPhase;
-			buildActionMask = 2147483647;
-			files = (
-				14461C7109C3C37F005840C0 /* png.c in Sources */,
-				14461C7409C3C37F005840C0 /* pngerror.c in Sources */,
-				14461C7509C3C37F005840C0 /* pnggccrd.c in Sources */,
-				14461C7609C3C37F005840C0 /* pngget.c in Sources */,
-				14461C7709C3C37F005840C0 /* pngmem.c in Sources */,
-				14461C7809C3C37F005840C0 /* pngpread.c in Sources */,
-				14461C7909C3C37F005840C0 /* pngread.c in Sources */,
-				14461C7A09C3C37F005840C0 /* pngrio.c in Sources */,
-				14461C7B09C3C37F005840C0 /* pngrtran.c in Sources */,
-				14461C7C09C3C37F005840C0 /* pngrutil.c in Sources */,
-				14461C7D09C3C37F005840C0 /* pngset.c in Sources */,
-				14461C7F09C3C37F005840C0 /* pngtrans.c in Sources */,
-				14461C8009C3C37F005840C0 /* pngvcrd.c in Sources */,
-				14461C8109C3C37F005840C0 /* pngwio.c in Sources */,
-				14461C8209C3C37F005840C0 /* pngwrite.c in Sources */,
-				14461C8309C3C37F005840C0 /* pngwtran.c in Sources */,
-				14461C8409C3C37F005840C0 /* pngwutil.c in Sources */,
-			);
-			runOnlyForDeploymentPostprocessing = 0;
-		};
-/* End PBXSourcesBuildPhase section */
-
-/* Begin XCBuildConfiguration section */
-		4FADC24308B4156D00ABE55E /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				COPY_PHASE_STRIP = NO;
-				DYLIB_COMPATIBILITY_VERSION = 3;
-				DYLIB_CURRENT_VERSION = 3;
-				FRAMEWORK_VERSION = 1.2.41beta05;
-				GCC_PRECOMPILE_PREFIX_HEADER = NO;
-				GCC_PREFIX_HEADER = "";
-				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@executable_path/../Frameworks";
-				LIBRARY_STYLE = DYNAMIC;
-				MACH_O_TYPE = mh_dylib;
-				OTHER_LDFLAGS = "-lz";
-				PRODUCT_NAME = libpng;
-				WRAPPER_EXTENSION = framework;
-			};
-			name = Debug;
-		};
-		4FADC24408B4156D00ABE55E /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				DYLIB_COMPATIBILITY_VERSION = 3;
-				DYLIB_CURRENT_VERSION = 3;
-				FRAMEWORK_VERSION = 1.2.41beta05;
-				GCC_PRECOMPILE_PREFIX_HEADER = NO;
-				GCC_PREFIX_HEADER = "";
-				INFOPLIST_FILE = Info.plist;
-				INSTALL_PATH = "@executable_path/../Frameworks";
-				LIBRARY_STYLE = DYNAMIC;
-				MACH_O_TYPE = mh_dylib;
-				OTHER_LDFLAGS = "-lz";
-				PRODUCT_NAME = libpng;
-				WRAPPER_EXTENSION = framework;
-			};
-			name = Release;
-		};
-		4FADC24708B4156D00ABE55E /* Debug */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				ARCHS = (
-					i386,
-					ppc,
-					ppc64,
-					x86_64,
-				);
-				DEPLOYMENT_POSTPROCESSING = YES;
-				GCC_ENABLE_CPP_EXCEPTIONS = NO;
-				GCC_ENABLE_CPP_RTTI = NO;
-				GCC_ENABLE_FIX_AND_CONTINUE = YES;
-				GCC_GENERATE_DEBUGGING_SYMBOLS = YES;
-				GCC_OPTIMIZATION_LEVEL = 0;
-				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
-				GCC_VERSION_i386 = 4.0;
-				GCC_VERSION_ppc = 3.3;
-				GCC_WARN_ABOUT_RETURN_TYPE = YES;
-				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.5;
-				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
-				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
-				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
-				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
-				PREBINDING = NO;
-				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
-				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
-				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
-				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
-				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
-				ZERO_LINK = NO;
-			};
-			name = Debug;
-		};
-		4FADC24808B4156D00ABE55E /* Release */ = {
-			isa = XCBuildConfiguration;
-			buildSettings = {
-				ARCHS = (
-					i386,
-					ppc,
-					ppc64,
-					x86_64,
-				);
-				GCC_ENABLE_CPP_EXCEPTIONS = NO;
-				GCC_ENABLE_CPP_RTTI = NO;
-				GCC_ENABLE_FIX_AND_CONTINUE = NO;
-				GCC_GENERATE_DEBUGGING_SYMBOLS = NO;
-				GCC_OPTIMIZATION_LEVEL = 2;
-				GCC_TREAT_IMPLICIT_FUNCTION_DECLARATIONS_AS_ERRORS = YES;
-				GCC_VERSION_i386 = 4.0;
-				GCC_VERSION_ppc = 3.3;
-				GCC_WARN_ABOUT_RETURN_TYPE = YES;
-				GCC_WARN_UNUSED_VARIABLE = YES;
-				MACOSX_DEPLOYMENT_TARGET = 10.5;
-				"MACOSX_DEPLOYMENT_TARGET[arch=i386]" = 10.4;
-				"MACOSX_DEPLOYMENT_TARGET[arch=ppc]" = 10.2;
-				MACOSX_DEPLOYMENT_TARGET_i386 = 10.4;
-				MACOSX_DEPLOYMENT_TARGET_ppc = 10.2;
-				PREBINDING = NO;
-				SDKROOT = "$(DEVELOPER_SDK_DIR)/MacOSX10.5.sdk";
-				"SDKROOT[arch=i386]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
-				"SDKROOT[arch=ppc]" = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
-				SDKROOT_i386 = "$(DEVELOPER_SDK_DIR)/MacOSX10.4u.sdk";
-				SDKROOT_ppc = "$(DEVELOPER_SDK_DIR)/MacOSX10.3.9.sdk";
-				ZERO_LINK = NO;
-			};
-			name = Release;
-		};
-/* End XCBuildConfiguration section */
-
-/* Begin XCConfigurationList section */
-		4FADC24208B4156D00ABE55E /* Build configuration list for PBXNativeTarget "libpng" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4FADC24308B4156D00ABE55E /* Debug */,
-				4FADC24408B4156D00ABE55E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-		4FADC24608B4156D00ABE55E /* Build configuration list for PBXProject "libpng" */ = {
-			isa = XCConfigurationList;
-			buildConfigurations = (
-				4FADC24708B4156D00ABE55E /* Debug */,
-				4FADC24808B4156D00ABE55E /* Release */,
-			);
-			defaultConfigurationIsVisible = 0;
-			defaultConfigurationName = Release;
-		};
-/* End XCConfigurationList section */
-	};
-	rootObject = 0867D690FE84028FC02AAC07 /* Project object */;
-}

scripts/CMakeLists.txt

@@ -1,24 +1,17 @@
-project(PNG C)
-cmake_minimum_required(VERSION 2.4.3)
+                                             
+project(PNG)
 
 # Copyright (C) 2007 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 2)
+set(PNGLIB_MINOR 0)
 set(PNGLIB_RELEASE 41)
 set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
 set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
 
-set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
-
 # needed packages
 find_package(ZLIB REQUIRED)
-include_directories(${ZLIB_INCLUDE_DIR})
-
 if(NOT WIN32)
  find_library(M_LIBRARY
      NAMES m
@@ -27,33 +20,24 @@ if(NOT WIN32)
  if(NOT M_LIBRARY)
    message(STATUS
      "math library 'libm' not found - floating point support disabled")
- endif()
-else()
+ endif(NOT M_LIBRARY)
+else(NOT WIN32)
  # not needed on windows
  set(M_LIBRARY "")
-endif()
+endif(NOT WIN32)
+
 
 # COMMAND LINE OPTIONS
-if(DEFINED PNG_SHARED)
-  option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
-else()
-  option(PNG_SHARED "Build shared lib" ON)
-endif()
-if(DEFINED PNG_STATIC)
-  option(PNG_STATIC "Build static lib" ${PNG_STATIC})
-else()
-  option(PNG_STATIC "Build static lib" ON)
-endif()
-
+option(PNG_SHARED "Build shared lib" YES)
+option(PNG_STATIC "Build static lib" YES)
 if(MINGW)
   option(PNG_TESTS  "Build pngtest" NO)
 else(MINGW)
   option(PNG_TESTS  "Build pngtest" YES)
 endif(MINGW)
-
 option(PNG_NO_CONSOLE_IO "FIXME" YES)
 option(PNG_NO_STDIO      "FIXME" YES)
-option(PNG_DEBUG         "Build with debug output" NO)
+option(PNG_DEBUG         "Build with debug output" YES)
 option(PNGARG            "FIXME" YES)
 #TODO:
 # PNG_CONSOLE_IO_SUPPORTED
@@ -70,16 +54,20 @@ if(NOT WIN32)
       set(png_asm_tmp "OFF")
    endif("uname_output" MATCHES "^.*i[1-9]86.*$")
  endif(uname_executable)
-else()
+else(NOT WIN32)
  # this env var is normally only set on win64
  SET(TEXT "ProgramFiles(x86)")
  if("$ENV{${TEXT}}" STREQUAL "")
   set(png_asm_tmp "ON")
  endif("$ENV{${TEXT}}" STREQUAL "")
-endif()
+endif(NOT WIN32)
 
 # SET LIBNAME
-set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
+# msvc does not append 'lib' - do it here to have consistent name
+if(MSVC)
+ set(PNG_LIB_NAME lib)
+endif(MSVC)
+set(PNG_LIB_NAME ${PNG_LIB_NAME}png${PNGLIB_MAJOR}${PNGLIB_MINOR})
 
 # to distinguish between debug and release lib
 set(CMAKE_DEBUG_POSTFIX "d")
@@ -113,67 +101,54 @@ if(MSVC)
   add_definitions(-DPNG_NO_MODULEDEF -D_CRT_SECURE_NO_DEPRECATE)
 endif(MSVC)
 
-if(PNG_SHARED OR  NOT MSVC)
-	#if building msvc static this has NOT do be defined
-	add_definitions(-DZLIB_DLL)
-endif()
+add_definitions(-DZLIB_DLL)
 
 add_definitions(-DLIBPNG_NO_MMX)
 add_definitions(-DPNG_NO_MMX_CODE)
 
 if(PNG_CONSOLE_IO_SUPPORTED)
  add_definitions(-DPNG_CONSOLE_IO_SUPPORTED)
-endif()
+endif(PNG_CONSOLE_IO_SUPPORTED)
 
 if(PNG_NO_CONSOLE_IO)
  add_definitions(-DPNG_NO_CONSOLE_IO)
-endif()
+endif(PNG_NO_CONSOLE_IO)
 
 if(PNG_NO_STDIO)
  add_definitions(-DPNG_NO_STDIO)
-endif()
+endif(PNG_NO_STDIO)
 
 if(PNG_DEBUG)
  add_definitions(-DPNG_DEBUG)
-endif()
+endif(PNG_DEBUG)
 
 if(NOT M_LIBRARY AND NOT WIN32)
  add_definitions(-DPNG_NO_FLOATING_POINT_SUPPORTED)
-endif()
+endif(NOT M_LIBRARY AND NOT WIN32)
 
 # NOW BUILD OUR TARGET
 include_directories(${PNG_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
 
 if(PNG_SHARED)
  add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
- if(MSVC)
-   # msvc does not append 'lib' - do it here to have consistent name
-   set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
- endif()
  target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif()
-
+endif(PNG_SHARED)
 if(PNG_STATIC)
 # does not work without changing name
  set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
  add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
- if(MSVC)
-   # msvc does not append 'lib' - do it here to have consistent name
-   set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
- endif()
-endif()
-
+endif(PNG_STATIC)
 
 if(PNG_SHARED AND WIN32)
  set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
-endif()
+endif(PNG_SHARED AND WIN32)
 
-if(PNG_TESTS AND PNG_SHARED)
+if(PNG_TESTS)
 # does not work with msvc due to png_lib_ver issue
  add_executable(pngtest ${pngtest_sources})
  target_link_libraries(pngtest ${PNG_LIB_NAME})
 #  add_test(pngtest ${PNG_SOURCE_DIR}/pngtest.png)
-endif()
+endif(PNG_TESTS)
 
 
 # CREATE PKGCONFIG FILES
@@ -193,49 +168,31 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
   ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config)
 
 # SET UP LINKS
-if(PNG_SHARED)
-  set_target_properties(${PNG_LIB_NAME} PROPERTIES
-#    VERSION 0.${PNGLIB_RELEASE}.1.2.41beta05
+set_target_properties(${PNG_LIB_NAME} PROPERTIES
+#    VERSION 0.${PNGLIB_RELEASE}.1.0.41
      VERSION 0.${PNGLIB_RELEASE}.0
      SOVERSION 0
      CLEAN_DIRECT_OUTPUT 1)
-endif()
-if(PNG_STATIC)
-  if(NOT WIN32)
-    # that's uncool on win32 - it overwrites our static import lib...
-    set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
-       OUTPUT_NAME ${PNG_LIB_NAME}
-       CLEAN_DIRECT_OUTPUT 1)
-  endif()
-endif()
-
+if(NOT WIN32)
+  # that's uncool on win32 - it overwrites our static import lib...
+  set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
+     OUTPUT_NAME ${PNG_LIB_NAME}
+     CLEAN_DIRECT_OUTPUT 1)
+endif(NOT WIN32)
 # INSTALL
-if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
-    if(PNG_SHARED)
-        install(TARGETS ${PNG_LIB_NAME}
-            RUNTIME DESTINATION bin
-            LIBRARY DESTINATION lib
-            ARCHIVE DESTINATION lib)
-    endif()
-    if(PNG_STATIC)
-        install(TARGETS ${PNG_LIB_NAME_STATIC}
-            LIBRARY DESTINATION lib
-            ARCHIVE DESTINATION lib)
-    endif()
-endif()
+install_targets(/lib ${PNG_LIB_NAME})
+if(PNG_STATIC)
+  install_targets(/lib ${PNG_LIB_NAME_STATIC})
+endif(PNG_STATIC)
 
-if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
 install(FILES png.h pngconf.h         DESTINATION include)
 install(FILES png.h pngconf.h         DESTINATION include/${PNGLIB_NAME})
-endif()
-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
-    install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)
-    install(FILES png.5                           DESTINATION man/man5)
-    install(FILES ${PNG_BINARY_DIR}/libpng.pc     DESTINATION lib/pkgconfig)
-    install(FILES ${PNG_BINARY_DIR}/libpng-config      DESTINATION bin)
-    install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc  DESTINATION lib/pkgconfig)
-    install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
-endif()
+install(FILES libpng.3 libpngpf.3             DESTINATION man/man3)
+install(FILES png.5                           DESTINATION man/man5)
+install(FILES ${PNG_BINARY_DIR}/libpng.pc     DESTINATION lib/pkgconfig)
+install(FILES ${PNG_BINARY_DIR}/libpng-config      DESTINATION bin)
+install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}.pc  DESTINATION lib/pkgconfig)
+install(FILES ${PNG_BINARY_DIR}/${PNGLIB_NAME}-config DESTINATION bin)
 
 # what's with libpng.txt and all the extra files?
 

scripts/descrip.mms

@@ -1,6 +1,6 @@
 
 cc_defs = /inc=$(ZLIBSRC)
-c_deb =
+c_deb = 
 
 .ifdef __DECC__
 pref = /prefix=all
@@ -29,7 +29,7 @@ test : pngtest.exe
    run pngtest
 
 clean :
-	delete *.obj;*,*.exe;
+	delete *.obj;*,*.exe;*
 
 
 # Other dependencies.
@@ -44,9 +44,9 @@ pngerror.obj : png.h, pngconf.h
 pngmem.obj : png.h, pngconf.h
 pngrio.obj : png.h, pngconf.h
 pngwio.obj : png.h, pngconf.h
+pngtest.obj : png.h, pngconf.h
 pngtrans.obj : png.h, pngconf.h
 pngwrite.obj : png.h, pngconf.h
 pngwtran.obj : png.h, pngconf.h
 pngwutil.obj : png.h, pngconf.h
 
-pngtest.obj : png.h, pngconf.h

scripts/libpng-config-head.in

@@ -4,14 +4,11 @@
 # provides configuration info for libpng.
 
 # Copyright (C) 2002 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Modeled after libxml-config.
 
-version=1.2.41beta05
+version=1.0.41
 prefix=""
 libdir=""
 libs=""

scripts/libpng-config.in

@@ -4,10 +4,7 @@
 # provides configuration info for libpng.
 
 # Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Modeled after libxml-config.
 

scripts/libpng.icc

@@ -1,16 +1,13 @@
 // Project file for libpng (static)
 // IBM VisualAge/C++ version 4.0 or later
 // Copyright (C) 2000 Cosmin Truta
-//
-// This code is released under the libpng license.
-// For conditions of distribution and use, see the disclaimer
-// and license in png.h
-//
+// For conditions of distribution and use, see copyright notice in png.h
 // Notes:
 //   All modules are compiled in C mode
 //   Tested with IBM VAC++ 4.0 under Win32
 //   Expected to work with IBM VAC++ 4.0 or later under OS/2 and Win32
 //   Can be easily adapted for IBM VAC++ 4.0 or later under AIX
+// For conditions of distribution and use, see copyright notice in png.h
 
 option incl(searchpath, "../zlib"), opt(level, "2"),
  link(libsearchpath, "../zlib")

scripts/libpng.pc.in

@@ -1,10 +1,10 @@
 prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
-includedir=@includedir@/libpng12
+includedir=@includedir@/libpng10
 
 Name: libpng
 Description: Loads and saves PNG files
-Version: 1.2.41beta05
-Libs: -L${libdir} -lpng12
+Version: 1.0.41
+Libs: -L${libdir} -lpng10
 Cflags: -I${includedir}

scripts/makefile.32sunu

@@ -3,15 +3,12 @@
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng12
+LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -33,7 +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, libpng12.so and libpng12/png.h
+# where make install puts libpng.a, libpng10.so and libpng10/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -95,7 +92,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -106,7 +103,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra\"; \
 	echo ldopts=\"-xtarget=ultra\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.64sunu

@@ -3,15 +3,12 @@
 # Copyright (C) 2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1998 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng12
+LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 CC=cc
@@ -33,7 +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, libpng12.so and libpng12/png.h
+# where make install puts libpng.a, libpng10.so and libpng10/png.h
 prefix=/a
 exec_prefix=$(prefix)
 
@@ -51,7 +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) -lpng12 -lz -lm
+LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng10 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -95,7 +92,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -106,7 +103,7 @@ libpng-config:
 	echo R_opts=\"-R$(LIBPATH)\"; \
 	echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
 	echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.acorn

@@ -6,10 +6,11 @@ CCflags = -c -depend !Depend -IC:,Zlib: -g -throwback  -DRISCOS  -fnah
 C++flags = -c -depend !Depend -IC: -throwback
 Linkflags = -aif -c++ -o $@
 ObjAsmflags = -throwback -NoCache -depend !Depend
-CMHGflags =
+CMHGflags = 
 LibFileflags = -c -l -o $@
 Squeezeflags = -o $@
 
+
 # Final targets:
 @.libpng-lib:   @.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
 	@.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \

scripts/makefile.aix

@@ -1,12 +1,9 @@
 # makefile for libpng using gcc (generic, static library)
-# Copyright (C) 2002, 2006-2009 Glenn Randers-Pehrson
+# Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
 # Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Location of the zlib library and include files
 ZLIBINC = ../zlib
@@ -21,9 +18,9 @@ RANLIB = ranlib
 RM_F = rm -f
 LN_SF = ln -f -s
 
-LIBNAME=libpng12
+LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local
@@ -49,7 +46,7 @@ CRELEASE = -O2
 LDRELEASE = -s
 WARNMORE=-W -Wall
 CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng12 -lz -lm $(LDRELEASE)
+LDFLAGS = -L. -L$(ZLIBLIB) -lpng10 -lz -lm $(LDRELEASE)
 
 # File extensions
 O=.o
@@ -57,7 +54,7 @@ A=.a
 E=
 
 # Variables
-OBJS =  png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
+OBJS = png$(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)
 
@@ -97,20 +94,20 @@ install: $(LIBNAME)$(A)
 clean:
 	$(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png
 
-png$(O):      png.h pngconf.h
+png$(O): png.h pngconf.h
 pngerror$(O): png.h pngconf.h
-pngget$(O):   png.h pngconf.h
-pngmem$(O):   png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
 pngpread$(O): png.h pngconf.h
-pngread$(O):  png.h pngconf.h
-pngrio$(O):   png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
 pngrtran$(O): png.h pngconf.h
 pngrutil$(O): png.h pngconf.h
-pngset$(O):   png.h pngconf.h
+pngset$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h
 pngtrans$(O): png.h pngconf.h
-pngwio$(O):   png.h pngconf.h
+pngwio$(O): png.h pngconf.h
 pngwrite$(O): png.h pngconf.h
 pngwtran$(O): png.h pngconf.h
 pngwutil$(O): png.h pngconf.h
 
-pngtest$(O):  png.h pngconf.h

scripts/makefile.amiga

@@ -1,10 +1,7 @@
 # Commodore Amiga Makefile
 # makefile for libpng and SAS C V6.5x compiler
 # Copyright (C) 1995-2000 Wolf Faust
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 #
 # Note: Use #define PNG_READ_BIG_ENDIAN_SUPPORTED in pngconf.h
 #

scripts/makefile.atari

@@ -1,12 +1,8 @@
 # makefile for libpng
 # Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Modified for LC56/ATARI assumes libz.lib is in same dir and uses default
+# For conditions of distribution and use, see copyright notice in png.h
+# modified for LC56/ATARI assumes libz.lib is in same dir and uses default
 # rules for library management
 #
 CFLAGS=-I..\zlib -O

scripts/makefile.bc32

@@ -11,6 +11,7 @@
 ## Where zlib.h, zconf.h and zlib.lib are
 ZLIB_DIR=..\zlib
 
+
 ## Compiler, linker and lib stuff
 CC=bcc32
 LD=bcc32
@@ -48,6 +49,7 @@ CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
 # -M  generate map file
 LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)
 
+
 ## Variables
 OBJS = \
 	png.obj \
@@ -85,6 +87,7 @@ LIBOBJS = \
 
 LIBNAME=libpng.lib
 
+
 ## Implicit rules
 # Braces let make "batch" calls to the compiler,
 # 2 calls instead of 12; space is important.
@@ -97,6 +100,7 @@ LIBNAME=libpng.lib
 .obj.exe:
 	$(LD) $(LDFLAGS) $*.obj $(LIBNAME) zlib.lib $(NOEHLIB)
 
+
 ## Major targets
 all: libpng pngtest
 
@@ -107,24 +111,25 @@ pngtest: pngtest.exe
 test: pngtest.exe
 	pngtest
 
+
 ## Minor Targets
 
-png.obj: png.c png.h pngconf.h
-pngerror.obj: pngerror.c png.h pngconf.h
-pngget.obj: pngget.c png.h pngconf.h
-pngmem.obj: pngmem.c png.h pngconf.h
-pngpread.obj: pngpread.c png.h pngconf.h
-pngread.obj: pngread.c png.h pngconf.h
-pngrio.obj: pngrio.c png.h pngconf.h
-pngrtran.obj: pngrtran.c png.h pngconf.h
-pngrutil.obj: pngrutil.c png.h pngconf.h
-pngset.obj: pngset.c png.h pngconf.h
-pngtrans.obj: pngtrans.c png.h pngconf.h
-pngwio.obj: pngwio.c png.h pngconf.h
-pngwrite.obj: pngwrite.c png.h pngconf.h
-pngwtran.obj: pngwtran.c png.h pngconf.h
-pngwutil.obj: pngwutil.c png.h pngconf.h
-pngtest.obj: pngtest.c png.h pngconf.h
+png.obj: png.c
+pngerror.obj: pngerror.c
+pngget.obj: pngget.c
+pngmem.obj: pngmem.c
+pngpread.obj: pngpread.c
+pngread.obj: pngread.c
+pngrio.obj: pngrio.c
+pngrtran.obj: pngrtran.c
+pngrutil.obj: pngrutil.c
+pngset.obj: pngset.c
+pngtrans.obj: pngtrans.c
+pngwio.obj: pngwio.c
+pngwrite.obj: pngwrite.c
+pngwtran.obj: pngwtran.c
+pngwutil.obj: pngwutil.c
+
 
 $(LIBNAME): $(OBJS)
 	-del $(LIBNAME)
@@ -132,6 +137,7 @@ $(LIBNAME): $(OBJS)
 $(LIBOBJS), libpng
 |
 
+
 # Cleanup
 clean:
 	-del *.obj
@@ -142,4 +148,5 @@ clean:
 	-del *.tds
 	-del pngout.png
 
+
 # End of makefile for libpng

scripts/makefile.beos

@@ -3,15 +3,12 @@
 # Copyright (C) 2002, 2006, 2008 Glenn Randers-Pehrson
 # Copyright (C) 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME=libpng12
+LIBNAME=libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +16,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -49,7 +46,7 @@ CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
 # LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
 LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
 
-# where make install puts libpng.a, libpng12.so*, and png.h
+# where make install puts libpng.a, libpng10.so*, and png.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -91,13 +88,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng12 -lz \"; \
+	echo libs=\"-lpng10 -lz \"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -117,7 +114,7 @@ $(OLDSOVER): $(OBJSDLL)
 	$(OLDSOVER) $(OBJSDLL) $(LDFLAGS)
 
 pngtest: pngtest.o $(LIBSO)
-	$(CC) -L$(ZLIBLIB) -L. -lz -lpng12 -o pngtest pngtest.o
+	$(CC) -L$(ZLIBLIB) -L. -lz -lpng10 -o pngtest pngtest.o
 
 test: pngtest
 	./pngtest
@@ -226,5 +223,4 @@ pngwrite.o pngwrite.pic.o: png.h pngconf.h
 pngwtran.o pngwtran.pic.o: png.h pngconf.h
 pngwutil.o pngwutil.pic.o: png.h pngconf.h
 pngpread.o pngpread.pic.o: png.h pngconf.h
-
 pngtest.o: png.h pngconf.h

scripts/makefile.bor

@@ -12,6 +12,7 @@
 ## Where zlib.h, zconf.h and zlib_MODEL.lib are
 ZLIB_DIR=..\zlib
 
+
 ## Compiler, linker and lib stuff
 CC=bcc
 LD=bcc
@@ -56,8 +57,8 @@ CFLAGS=-O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
 # -M  generate map file
 LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
 
-## Variables
 
+## Variables
 OBJS = \
 	png.obj \
 	pngerror.obj \
@@ -94,8 +95,8 @@ LIBOBJS = \
 
 LIBNAME=libpng$(MODEL).lib
 
-## Implicit rules
 
+## Implicit rules
 # Braces let make "batch" calls to the compiler,
 # 2 calls instead of 12; space is important.
 .c.obj:
@@ -104,8 +105,8 @@ LIBNAME=libpng$(MODEL).lib
 .c.exe:
 	$(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
 
-## Major targets
 
+## Major targets
 all: libpng pngtest
 
 libpng: $(LIBNAME)
@@ -115,23 +116,25 @@ pngtest: pngtest$(MODEL).exe
 test: pngtest$(MODEL).exe
 	pngtest$(MODEL)
 
+
 ## Minor Targets
 
-png.obj: png.c png.h pngconf.h
-pngerror.obj: pngerror.c png.h pngconf.h
-pngget.obj: pngget.c png.h pngconf.h
-pngmem.obj: pngmem.c png.h pngconf.h
-pngpread.obj: pngpread.c png.h pngconf.h
-pngread.obj: pngread.c png.h pngconf.h
-pngrio.obj: pngrio.c png.h pngconf.h
-pngrtran.obj: pngrtran.c png.h pngconf.h
-pngrutil.obj: pngrutil.c png.h pngconf.h
-pngset.obj: pngset.c png.h pngconf.h
-pngtrans.obj: pngtrans.c png.h pngconf.h
-pngwio.obj: pngwio.c png.h pngconf.h
-pngwrite.obj: pngwrite.c png.h pngconf.h
-pngwtran.obj: pngwtran.c png.h pngconf.h
-pngwutil.obj: pngwutil.c png.h pngconf.h
+png.obj: png.c
+pngerror.obj: pngerror.c
+pngget.obj: pngget.c
+pngmem.obj: pngmem.c
+pngpread.obj: pngpread.c
+pngread.obj: pngread.c
+pngrio.obj: pngrio.c
+pngrtran.obj: pngrtran.c
+pngrutil.obj: pngrutil.c
+pngset.obj: pngset.c
+pngtrans.obj: pngtrans.c
+pngwio.obj: pngwio.c
+pngwrite.obj: pngwrite.c
+pngwtran.obj: pngwtran.c
+pngwutil.obj: pngwutil.c
+
 
 $(LIBNAME): $(OBJS)
 	-del $(LIBNAME)
@@ -139,12 +142,14 @@ $(LIBNAME): $(OBJS)
 $(LIBOBJS), libpng$(MODEL)
 |
 
+
 pngtest$(MODEL).obj: pngtest.c
 	$(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
 
 pngtest$(MODEL).exe: pngtest$(MODEL).obj
 	$(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
 
+
 # Clean up anything else you want
 clean:
 	-del *.obj
@@ -153,4 +158,5 @@ clean:
 	-del *.lst
 	-del *.map
 
+
 # End of makefile for libpng

scripts/makefile.cygwin

@@ -7,10 +7,7 @@
 #    and Glenn Randers-Pehrson, based on makefile for linux-elf w/mmx by:
 # Copyright (C) 1998-2000 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # This makefile intends to support building outside the src directory
 # if desired. When invoking it, specify an argument to SRCDIR on the
@@ -74,10 +71,10 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
         -W -Wall -O3 $(ALIGN) -funroll-loops -DPNG_NO_MMX_CODE \
 	-fomit-frame-pointer) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-CYGDLL = 12
-PNGMIN = 1.2.41beta05
+CYGDLL = 10
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(CYGDLL).dll
@@ -141,7 +138,7 @@ libpng.pc: scripts/libpng.pc.in
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz! > libpng.pc
 
 libpng-config: scripts/libpng-config-head.in scripts/libpng-config-body.in
 	@echo -e Making $(LIBNAME) libpng-config file for this libpng \
@@ -179,7 +176,7 @@ pngtest-stat$(EXE): pngtest.o $(STATLIB)
 pngtest.pic.o: pngtest.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
-pngtest.o: pngtest.c png.h pngconf.h
+pngtest.o: pngtest.c
 	$(CC) $(CFLAGS) -c $< -o $@
 
 test: test-static test-shared
@@ -254,16 +251,16 @@ test-dd:
 	echo
 	echo Testing installed dynamic shared library in $(DL).
 	$(CC) -I$(DI) $(CFLAGS) \
-	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
 	   -L$(DL) -L$(ZLIBLIB) \
-	   -o pngtestd `$(BINPATH)/libpng12-config --ldflags`
+	   -o pngtestd `$(BINPATH)/libpng10-config --ldflags`
 	./pngtestd pngtest.png
 
 test-installed:
 	$(CC) $(CFLAGS) \
-	   `$(BINPATH)/libpng12-config --cflags` pngtest.c \
+	   `$(BINPATH)/libpng10-config --cflags` pngtest.c \
 	   -L$(ZLIBLIB) \
-	   -o pngtesti$(EXE) `$(BINPATH)/libpng12-config --ldflags`
+	   -o pngtesti$(EXE) `$(BINPATH)/libpng10-config --ldflags`
 	./pngtesti$(EXE) pngtest.png
 
 clean:

scripts/makefile.darwin

@@ -4,12 +4,9 @@
 # derived from makefile.linux:
 #  Copyright (C) 1998, 1999 Greg Roelofs
 #  Copyright (C) 1996, 1997 Andreas Dilger
+# For conditions of distribution and use, see copyright notice in png.h
 
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where "make install" puts libpng.a, libpng12.dylib, png.h and pngconf.h
+# where "make install" puts libpng.a, libpng10.dylib, png.h and pngconf.h
 prefix=/usr/local
 exec_prefix=$(prefix)
 
@@ -20,9 +17,9 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 12
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -30,8 +27,8 @@ LIBSO=$(LIBNAME).dylib
 LIBSOMAJ=$(LIBNAME).$(PNGMAJ).dylib
 LIBSOVER=$(LIBNAME).$(PNGVER).dylib
 OLDSO=libpng.dylib
-OLDSOMAJ=libpng.3.dylib
-OLDSOVER=libpng.3.$(PNGMIN).dylib
+OLDSOMAJ=libpng.2.dylib
+OLDSOVER=libpng.2.$(PNGMIN).dylib
 
 # Utilities:
 CC=cc
@@ -43,7 +40,7 @@ RM_F=/bin/rm -f
 
 # CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE
 CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -87,14 +84,14 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng12 -lz\"; \
+	echo libs=\"-lpng10 -lz\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -114,7 +111,7 @@ $(LIBSOVER): $(OBJSDLL)
 $(OLDSOVER): $(OBJSDLL)
 	$(CC) -dynamiclib \
 	 -install_name $(LIBPATH)/$(OLDSOMAJ) \
-	 -current_version 3 -compatibility_version 3 \
+	 -current_version 2 -compatibility_version 2 \
 	 -o $(OLDSOVER) \
 	 $(OBJSDLL) -L$(ZLIBLIB) -lz
 

scripts/makefile.dec

@@ -1,24 +1,21 @@
 # makefile for libpng on DEC Alpha Unix
 # Copyright (C) 2000-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
-LIBNAME = libpng12
+LIBNAME = libpng10
 
 # Shared library names:
 LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -75,7 +72,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -83,7 +80,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-std\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -208,10 +205,10 @@ pngget.o: png.h pngconf.h
 pngread.o: png.h pngconf.h
 pngrtran.o: png.h pngconf.h
 pngrutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
 pngtrans.o: png.h pngconf.h
 pngwrite.o: png.h pngconf.h
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
 
-pngtest.o: png.h pngconf.h

scripts/makefile.dj2

@@ -1,10 +1,7 @@
 # DJGPP (DOS gcc) makefile for libpng
-# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # where make install will put libpng.a and png.h
 #prefix=/usr/local
@@ -50,9 +47,9 @@ pngread.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
 pngrtran.o: png.h pngconf.h
 pngrutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
 pngtrans.o: png.h pngconf.h
 pngwrite.o: png.h pngconf.h
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
 
-pngtest.o: png.h pngconf.h

scripts/makefile.elf

@@ -1,22 +1,19 @@
-# makefile for libpng.a and libpng12.so on Linux ELF with gcc
+# makefile for libpng.a and libpng10.so on Linux ELF with gcc
 # Copyright (C) 1998, 1999, 2002, 2006, 2008 Greg Roelofs
 # and Glenn Randers-Pehrson
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Modified for Debian by Junichi Uekawa and Josselin Mouette
 # Major modifications are:
 #    * link libpng explicitly with libz and libm
-#    * $(OLDSO).3 is a symlink rather than a different library
+#    * $(OLDSO).2 is a symlink rather than a different library
 #    * versioned symbols
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -24,8 +21,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -35,8 +32,8 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where "make install" puts libpng12.a, libpng12.so*,
-# libpng12/png.h and libpng12/pngconf.h
+# where "make install" puts libpng10.a, libpng10.so*,
+# libpng10/png.h and libpng10/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -60,7 +57,7 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 CFLAGS=-W -Wall -D_REENTRANT -O2 \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
 
-LDFLAGS=-L. -lpng12
+LDFLAGS=-L. -lpng10
 LDFLAGS_A=libpng.a -lz -lm
 LIBADDFLAGS=-lz -lm
 
@@ -107,11 +104,11 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng.syms: png.h pngconf.h
 	$(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
-	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG12_%s {global:\n",PNGMAJ)}\
+	awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG10_%s {global:\n",PNGMAJ)}\
 	{ for (i=1;i+2<=NF;++i)\
 		if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
 			print $$(i+1) ";";\
@@ -128,8 +125,8 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo L_opts=\"\"; \
 	echo R_opts=\"\"; \
-	echo libs=\"-lpng12\"; \
-	echo all_libs=\"-lpng12 $(LIBADDFLAGS)\"; \
+	echo libs=\"-lpng10\"; \
+	echo all_libs=\"-lpng10 $(LIBADDFLAGS)\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.freebsd

@@ -1,9 +1,6 @@
 # makefile for libpng under FreeBSD
-# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# Copyright (C) 2002, 2007 Glenn Randers-Pehrson and Andrey A. Chernov
+# For conditions of distribution and use, see copyright notice in png.h
 
 PREFIX?=        /usr/local
 SHLIB_VER?=     5

scripts/makefile.gcc

@@ -2,10 +2,7 @@
 # Copyright (C) 2008 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Location of the zlib library and include files
 ZLIBINC = ../zlib
@@ -34,9 +31,9 @@ A=.a
 EXE=
 
 # Variables
-OBJS =  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$(O)
+OBJS = png$(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)
 
 # Targets
 all: static
@@ -64,20 +61,20 @@ pngtest$(EXE): pngtest$(O) libpng$(A)
 clean:
 	$(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png
 
-png$(O):      png.h pngconf.h
+png$(O): png.h pngconf.h
 pngerror$(O): png.h pngconf.h
-pngget$(O):   png.h pngconf.h
-pngmem$(O):   png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
 pngpread$(O): png.h pngconf.h
-pngread$(O):  png.h pngconf.h
-pngrio$(O):   png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
 pngrtran$(O): png.h pngconf.h
 pngrutil$(O): png.h pngconf.h
-pngset$(O):   png.h pngconf.h
+pngset$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h
 pngtrans$(O): png.h pngconf.h
-pngwio$(O):   png.h pngconf.h
+pngwio$(O): png.h pngconf.h
 pngwrite$(O): png.h pngconf.h
 pngwtran$(O): png.h pngconf.h
 pngwutil$(O): png.h pngconf.h
 
-pngtest$(O):  png.h pngconf.h

scripts/makefile.gcmmx

@@ -1,12 +1,9 @@
-# makefile for libpng.a and libpng12.so on Linux ELF with gcc using MMX
+# makefile for libpng.a and libpng10.so on Linux ELF with gcc using MMX
 # assembler code
 # Copyright 2002, 2006, 2008 Greg Roelofs and Glenn Randers-Pehrson
 # Copyright 1998-2001 Greg Roelofs
 # Copyright 1996-1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # CAUTION: Do not use this makefile with gcc versions 2.7.2.2 and earlier.
 
@@ -15,9 +12,9 @@
 #        the background!  Context switches between MMX and FPU are expensive.
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -25,8 +22,8 @@ LIBSO=$(LIBNAME).so
 LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).so.$(PNGVER)
 OLDSO=libpng.so
-OLDSOMAJ=libpng.so.3
-OLDSOVER=libpng.so.3.$(PNGMIN)
+OLDSOMAJ=libpng.so.2
+OLDSOVER=libpng.so.2.$(PNGMIN)
 
 # Utilities:
 CC = gcc
@@ -37,8 +34,8 @@ MKDIR_P = mkdir -p
 RANLIB = ranlib
 RM_F = /bin/rm -f
 
-# where "make install" puts libpng12.a, libpng12.so*,
-# libpng12/png.h and libpng12/pngconf.h
+# where "make install" puts libpng10.a, libpng10.so*,
+# libpng10/png.h and libpng10/pngconf.h
 # Prefix must be a full pathname.
 prefix=/usr/local
 exec_prefix=$(prefix)
@@ -67,13 +64,13 @@ CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
 ### for gcc 2.95.2 on 686:
 #CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
 #	-mcpu=i686 -malign-double -ffast-math -fstrict-aliasing \
-#	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
+#	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer 
 ### for gcc 2.7.2.3 on 486 and up:
 #CFLAGS=-DPNG_THREAD_UNSAFE_OK -I$(ZLIBINC) -W -Wall -O \
 #	-m486 -malign-double -ffast-math \
-#	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer
+#	$(ALIGN) -funroll-loops -funroll-all-loops -fomit-frame-pointer 
 
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
+LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
 LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
 
 
@@ -119,7 +116,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -128,7 +125,7 @@ libpng-config:
 	echo cppflags=\"-DPNG_THREAD_UNSAFE_OK \"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
 	echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hp64

@@ -1,11 +1,8 @@
 # makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
-# Copyright (C) 1999-2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 1999-2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42
 # contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Where the zlib library and include files are located
 ZLIBLIB=/opt/zlib/lib
@@ -19,9 +16,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,8 +26,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.3
-OLDSOVER=libpng.sl.3.$(PNGMIN)
+OLDSOMAJ=libpng.sl.2
+OLDSOVER=libpng.sl.2.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -48,7 +45,7 @@ CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
 
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 
-# where make install puts libpng.a, libpng12.sl, and png.h
+# where make install puts libpng.a, libpng10.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -93,7 +90,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -101,7 +98,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -230,10 +227,9 @@ pngget.o: png.h pngconf.h
 pngread.o: png.h pngconf.h
 pngrtran.o: png.h pngconf.h
 pngrutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
 pngtrans.o: png.h pngconf.h
 pngwrite.o: png.h pngconf.h
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
-
-pngtest.o: png.h pngconf.h

scripts/makefile.hpgcc

@@ -3,15 +3,12 @@
 # Copyright (C) 2001, Laurent faillie
 # Copyright (C) 1998, 1999 Greg Roelofs
 # Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -19,8 +16,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.3
-OLDSOVER=libpng.sl.3.$(PNGMIN)
+OLDSOMAJ=libpng.sl.2
+OLDSOVER=libpng.sl.2.$(PNGMIN)
 
 # Utilities:
 CC=gcc
@@ -58,8 +55,8 @@ WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
 
 CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
 	$(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng12 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng12 -lz -lm
+#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng10 -lz -lm
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng10 -lz -lm
 
 INCPATH=$(prefix)/include
 LIBPATH=$(exec_prefix)/lib
@@ -103,13 +100,13 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
 	echo prefix=\"$(prefix)\"; \
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 

scripts/makefile.hpux

@@ -2,10 +2,7 @@
 # Copyright (C) 1999-2002, 2006 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42
 # contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # Where the zlib library and include files are located
 ZLIBLIB=/opt/zlib/lib
@@ -19,9 +16,9 @@ ZLIBINC=/opt/zlib/include
 #   SHAREDLIB=libz.sl
 
 # Library name:
-LIBNAME = libpng12
+LIBNAME = libpng10
 PNGMAJ = 0
-PNGMIN = 1.2.41beta05
+PNGMIN = 1.0.41
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # Shared library names:
@@ -29,8 +26,8 @@ LIBSO=$(LIBNAME).sl
 LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
 LIBSOVER=$(LIBNAME).sl.$(PNGVER)
 OLDSO=libpng.sl
-OLDSOMAJ=libpng.sl.3
-OLDSOVER=libpng.sl.3.$(PNGMIN)
+OLDSOMAJ=libpng.sl.2
+OLDSOVER=libpng.sl.2.$(PNGMIN)
 
 # Utilities:
 AR_RC=ar rc
@@ -40,7 +37,7 @@ LN_SF=ln -sf
 RANLIB=ranlib
 RM_F=/bin/rm -f
 
-# where make install puts libpng.a, libpng12.sl, and png.h
+# where make install puts libpng.a, libpng10.sl, and png.h
 prefix=/opt/libpng
 exec_prefix=$(prefix)
 INCPATH=$(prefix)/include
@@ -90,7 +87,7 @@ libpng.pc:
 	-e s!@exec_prefix@!$(exec_prefix)! \
 	-e s!@libdir@!$(LIBPATH)! \
 	-e s!@includedir@!$(INCPATH)! \
-	-e s!-lpng12!-lpng12\ -lz\ -lm! > libpng.pc
+	-e s!-lpng10!-lpng10\ -lz\ -lm! > libpng.pc
 
 libpng-config:
 	( cat scripts/libpng-config-head.in; \
@@ -98,7 +95,7 @@ libpng-config:
 	echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
 	echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
 	echo L_opts=\"-L$(LIBPATH)\"; \
-	echo libs=\"-lpng12 -lz -lm\"; \
+	echo libs=\"-lpng10 -lz -lm\"; \
 	cat scripts/libpng-config-body.in ) > libpng-config
 	chmod +x libpng-config
 
@@ -227,10 +224,9 @@ pngget.o: png.h pngconf.h
 pngread.o: png.h pngconf.h
 pngrtran.o: png.h pngconf.h
 pngrutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
 pngtrans.o: png.h pngconf.h
 pngwrite.o: png.h pngconf.h
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
-
-pngtest.o: png.h pngconf.h

scripts/makefile.ibmc

@@ -1,12 +1,7 @@
 # Makefile for libpng (static)
 # IBM C version 3.x for Win32 and OS/2
-# Copyright (C) 2006 Glenn Randers-Pehrson
 # Copyright (C) 2000 Cosmin Truta
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
+# For conditions of distribution and use, see copyright notice in png.h
 # Notes:
 #   Derived from makefile.std
 #   All modules are compiled in C mode
@@ -58,20 +53,19 @@ clean:
 	$(RM) pngtest$(E)
 	$(RM) pngout.png
 
-png$(O):      png.h pngconf.h
+png$(O): png.h pngconf.h
 pngerror$(O): png.h pngconf.h
-pngget$(O):   png.h pngconf.h
-pngmem$(O):   png.h pngconf.h
+pngget$(O): png.h pngconf.h
+pngmem$(O): png.h pngconf.h
 pngpread$(O): png.h pngconf.h
-pngread$(O):  png.h pngconf.h
-pngrio$(O):   png.h pngconf.h
+pngread$(O): png.h pngconf.h
+pngrio$(O): png.h pngconf.h
 pngrtran$(O): png.h pngconf.h
 pngrutil$(O): png.h pngconf.h
-pngset$(O):   png.h pngconf.h
+pngset$(O): png.h pngconf.h
+pngtest$(O): png.h pngconf.h
 pngtrans$(O): png.h pngconf.h
-pngwio$(O):   png.h pngconf.h
+pngwio$(O): png.h pngconf.h
 pngwrite$(O): png.h pngconf.h
 pngwtran$(O): png.h pngconf.h
 pngwutil$(O): png.h pngconf.h
-
-pngtest$(O):  png.h pngconf.h

scripts/makefile.intel

@@ -1,17 +1,12 @@
 # Makefile for libpng
 # Microsoft Visual C++ with Intel C/C++ Compiler 4.0 and later
 
-# Copyright (C) 2006 Glenn Randers-Pehrson
 # Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
 # copyright 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # To use, do "nmake /f scripts\makefile.intel"
 
-# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
 
 # Where the zlib library and include files are located
 ZLIBLIB=..\zlib
@@ -31,6 +26,7 @@ CALLING=r	# __fastcall
 
 # --------------------------------------------------------------------------
 
+
 CC=icl -c
 CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
 LD=link
@@ -77,6 +73,9 @@ pngrio$(O): png.h pngconf.h
 pngwio$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 
+pngtest$(O): png.h pngconf.h
+	$(CC) $(CFLAGS) $*.c $(ERRFILE)
+
 pngtrans$(O): png.h pngconf.h
 	$(CC) $(CFLAGS) $*.c $(ERRFILE)
 
@@ -96,9 +95,6 @@ libpng.lib: $(OBJS)
 pngtest.exe: pngtest.obj libpng.lib
 	$(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
 
-pngtest$(O): png.h pngconf.h
-	$(CC) $(CFLAGS) $*.c $(ERRFILE)
-
 test: pngtest.exe
 	pngtest.exe
 

scripts/makefile.knr

@@ -1,10 +1,7 @@
 # makefile for libpng
-# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
+# Copyright (C) 2002 Glenn Randers-Pehrson
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
+# For conditions of distribution and use, see copyright notice in png.h
 
 # This makefile requires the file ansi2knr.c, which you can get
 # from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
@@ -61,7 +58,7 @@ pngtest: pngtest.o libpng.a
 test: pngtest
 	./pngtest
 
-install: libpng.a png.h pngconf.h
+install: libpng.a
 	-@mkdir $(DESTDIR)$(INCPATH)
 	-@mkdir $(DESTDIR)$(INCPATH)/libpng
 	-@mkdir $(DESTDIR)$(LIBPATH)
@@ -95,9 +92,8 @@ pngread.o: png.h pngconf.h
 pngpread.o: png.h pngconf.h
 pngrtran.o: png.h pngconf.h
 pngrutil.o: png.h pngconf.h
+pngtest.o: png.h pngconf.h
 pngtrans.o: png.h pngconf.h
 pngwrite.o: png.h pngconf.h
 pngwtran.o: png.h pngconf.h
 pngwutil.o: png.h pngconf.h
-
-pngtest.o: png.h pngconf.h