Imported from libpng-1.2.0beta2.tar

Imported from libpng-1.2.0beta1.tar
Imported from libpng-1.0.12beta1.tar
2025-07-10 18:04:09 +02:00 · 2009-04-06 16:06:18 -05:00 · 2009-04-06 16:06:16 -05:00 · 2009-04-06 16:06:14 -05:00 · 2009-04-06 16:06:12 -05:00 · 2009-04-06 16:06:10 -05:00
59 changed files with 1556 additions and 682 deletions
--- a/29
+++ b/29
@@ -1,26 +1,19 @@

-Libpng 1.0.10 - March 30, 2001
+Libpng 1.2.0beta2 - May 7, 2001

 This is a public release of libpng, intended for use in production codes.

-Changes since the last public release (1.0.9):
+Changes since the last public release (1.0.11):

-  Revised makefile.dec
-  Reformatted libpng.3 to eliminate bad line breaks.
-  Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c
-  Added prototype for png_mmx_support() near the top of pnggccrd.c
-  Moved some error checking from png_handle_IHDR to png_set_IHDR.
-  Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros.
-  Revised png_mmx_support() function in pnggccrd.c
-  Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c
-  Fixed memory leak in contrib/visupng/PngFile.c
-  Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version)
-  Added warnings when retrieving or setting gamma=0.
-  Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy,
-    and png_strlen.
-  Fixed bug in progressive reading (pngpread.c) with small images (height < 8).
-  Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
-  Added beos project files (Chris Herborth)
+  Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
+  Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
+  Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
+  Bumped DLLNUM to 2.
+  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.
+  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.

 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
--- a/29
+++ b/29
@@ -1,3 +1,4 @@
+
 CHANGES - changes for libpng

 version 0.2
@@ -914,6 +915,34 @@ version 1.0.10rc1 [March 23, 2001]
 version 1.0.10 [March 30, 2001]
  Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
  Added beos project files (Chris Herborth)
+version 1.0.11beta1 [April 3, 2001]
+  Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
+  Removed a no-longer needed AIX work-around from pngconf.h
+  Changed several "//" single-line comments to C-style in pnggccrd.c
+version 1.0.11beta2 [April 11, 2001]
+  Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
+  Updated scripts/pngos2.def
+version 1.0.11beta3 [April 14, 2001]
+  Added checking the results of many instances of png_malloc() for NULL
+version 1.0.11beta4 [April 20, 2001]
+  Undid the changes from version 1.0.11beta3.  Added a check for NULL return
+    from user's malloc_fn().
+  Removed some useless type casts of the NULL pointer.
+  Added makefile.netbsd
+version 1.0.11 [April 27, 2001]
+  Revised makefile.netbsd
+version 1.2.0beta1 [May 6, 2001]
+  Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
+  Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
+  Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
+  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 1.0.9
+  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.

 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu
--- a/13
+++ b/13
@@ -1,5 +1,5 @@

-Installing libpng version 1.0.10 - March 30, 2001
+Installing libpng version 1.2.0beta2 - May 7, 2001

 Before installing libpng, you must first install zlib.  zlib
 can usually be found wherever you got libpng.  zlib can be
@@ -10,7 +10,7 @@ zlib.h and zconf.h include files that correspond to the
 version of zlib that's installed.

 You can rename the directories that you downloaded (they
-might be called "libpng-1.0.10" or "lpng109" and "zlib-1.1.3"
+might be called "libpng-1.2.0beta2" or "lpng109" and "zlib-1.1.3"
 or "zlib113") so that you have directories called "zlib" and "libpng".

 Your directory structure should look like this:
@@ -60,8 +60,8 @@ The files that are presently available in the scripts directory
 include

 makefile.std      =>  Generic UNIX makefile (cc, creates static libpng.a)
- makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.10)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.10,
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta2)
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta2,
                       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
@@ -76,10 +76,11 @@ 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.macosx   =>  MACOS X Makefile
+ makefile.netbsd   =>  NetBSD/cc makefile, uses PNGGCCRD
 makefile.sgi      =>  Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.10)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta2)
 makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.10)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0beta2)
 makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
 makefile.mips     =>  MIPS makefile
 makefile.acorn    =>  Acorn makefile
--- a/8
+++ b/8
@@ -1,4 +1,8 @@

-Known bugs in libpng-1.0.10
+Known bugs in libpng-1.2.0
+
+1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
+   reading interlaced PNG files, when assembler code is enabled.
+
+   STATUS: Under investigation.

-None as of March 30, 2001.
--- a/14
+++ b/14
@@ -8,8 +8,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.

-libpng versions 1.0.7, July 1, 2000, through 1.0.10, March 30, 2001, are
-Copyright (c) 2000, 2001 Glenn Randers-Pehrson
+libpng versions 1.0.7, July 1, 2000, through 1.2.0beta2, May 7, 2001, are
+Copyright (c) 2000 Glenn Randers-Pehrson
 and are distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors

@@ -73,11 +73,11 @@ to the following restrictions:

 1. The origin of this source code must not be misrepresented.

-2. Altered versions must be plainly marked as such and
-   must not be misrepresented as being the original source.
+2. Altered versions must be plainly marked as such and must not
+   be misrepresented as being the original source.

-3. This Copyright notice may not be removed or altered from
-   any source or altered source distribution.
+3. This Copyright notice may not be removed or altered from any
+   source or altered source distribution.

 The Contributing Authors and Group 42, Inc. specifically permit, without
 fee, and encourage the use of this source code as a component to
@@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-March 30, 2001
+May 7, 2001
--- a/11
+++ b/11
@@ -1,4 +1,4 @@
-README for libpng 1.0.10 - March 30, 2001 (shared library 2.1)
+README for libpng 1.2.0beta2 - May 7, 2001 (shared library 2.1)
 See the note about version numbers near the top of png.h

 See INSTALL for instructions on how to install libpng.
@@ -183,9 +183,9 @@ Files in this distribution:
       descrip.mms      =>  VMS makefile for MMS or MMK
       makefile.std     =>  Generic UNIX makefile (cc, creates static libpng.a)
       makefile.linux   =>  Linux/ELF makefile
-                            (gcc, creates libpng.so.2.1.0.10)
+                            (gcc, creates libpng.so.2.1.2.0beta2)
       makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng.so.2.1.0.10, uses assembler code
+                            libpng.so.2.1.2.0beta2, 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
@@ -200,11 +200,12 @@ 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.macosx  =>  MACOS X Makefile
+       makefile.netbsd  =>  NetBSD/cc makefile, uses PNGGCCRD
       makefile.sgi     =>  Silicon Graphics IRIX (cc, creates static lib)
-       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.0.10)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta2)
       makefile.sunos   =>  Sun makefile
       makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng.so.2.1.0.10)
+                            (gcc, creates libpng.so.2.1.2.0beta2)
       makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
       makefile.mips    =>  MIPS makefile
       makefile.acorn   =>  Acorn makefile
--- a/4
+++ b/4
@@ -1,13 +1,13 @@
   Y2K compliance in libpng:
   =========================

-      March 30, 2001
+      May 7, 2001

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

      This is your unofficial assurance that libpng from version 0.71 and
-      upward through 1.0.10 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.0beta2 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
--- a/2
+++ b/2
@@ -1,5 +1,5 @@
 echo "
-  There is no \"configure\" script for Libpng-1.0.10.  Instead, please
+  There is no \"configure\" script for Libpng-1.2.0beta2.  Instead, please
  copy the appropriate makefile for your system from the \"scripts\"
  directory.  Read the INSTALL file for more details.
 "
--- a/contrib/gregbook/readpng2.c
+++ b/contrib/gregbook/readpng2.c
@@ -49,8 +49,77 @@ static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg);

 void readpng2_version_info(void)
 {
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) && \
+    (defined(__i386__) || defined(_M_IX86)) && \
+    defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+    /*
+     * WARNING:  This preprocessor approach means that the following code
+     *           cannot be used with a libpng DLL older than 1.2.0--the
+     *           compiled-in symbols for the new functions will not exist.
+     *           (Could use dlopen() and dlsym() on Unix and corresponding
+     *           calls for Windows, but not portable...)
+     */
+    {
+        int mmxsupport = png_mmx_support();
+        if (mmxsupport < 0)
+            fprintf(stderr, "   Compiled with libpng %s; using libpng %s "
+              "without MMX support.\n", PNG_LIBPNG_VER_STRING, png_libpng_ver);
+        else {
+            int compilerID;
+            png_uint_32 mmx_mask = png_get_mmx_flagmask(
+              PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
+
+            fprintf(stderr, "   Compiled with libpng %s; using libpng %s "
+              "with MMX support\n   (%s version).", PNG_LIBPNG_VER_STRING,
+              png_libpng_ver, compilerID == 1? "MSVC++" :
+              (compilerID == 2? "GNU C" : "unknown"));
+            fprintf(stderr, "  Processor %s MMX instructions.\n",
+              mmxsupport? "supports" : "does not support");
+            if (mmxsupport > 0) {
+                int num_optims = 0;
+
+                fprintf(stderr,
+                  "      Potential MMX optimizations supported by libpng:\n");
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_UP)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)
+                    ++num_optims;
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)
+                    ++num_optims;
+                if (num_optims)
+                    fprintf(stderr,
+                      "         decoding %s row filters (reading)\n",
+                      (num_optims == 4)? "all non-trivial" : "some");
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW) {
+                    fprintf(stderr, "         combining rows (reading)\n");
+                    ++num_optims;
+                }
+                if (mmx_mask & PNG_ASM_FLAG_MMX_READ_INTERLACE) {
+                    fprintf(stderr,
+                      "         expanding interlacing (reading)\n");
+                    ++num_optims;
+                }
+                mmx_mask &= ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+                if (mmx_mask) {
+                    fprintf(stderr, "         other (unknown)\n");
+                    ++num_optims;
+                }
+                if (num_optims == 0)
+                    fprintf(stderr, "         (none)\n");
+            }
+        }
+    }
+#else
    fprintf(stderr, "   Compiled with libpng %s; using libpng %s.\n",
      PNG_LIBPNG_VER_STRING, png_libpng_ver);
+#endif

    fprintf(stderr, "   Compiled with zlib %s; using zlib %s.\n",
      ZLIB_VERSION, zlib_version);
@@ -111,6 +180,97 @@ int readpng2_init(mainprog_info *mainprog_ptr)
    png_set_progressive_read_fn(png_ptr, mainprog_ptr,
      readpng2_info_callback, readpng2_row_callback, readpng2_end_callback);

+
+    /*
+     * may as well enable or disable MMX routines here, if supported;
+     *
+     * to enable all:  mask = png_get_mmx_flagmask (
+     *                   PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
+     *                 flags = png_get_asm_flags (png_ptr);
+     *                 flags |= mask;
+     *                 png_set_asm_flags (png_ptr, flags);
+     *
+     * to disable all:  mask = png_get_mmx_flagmask (
+     *                   PNG_SELECT_READ | PNG_SELECT_WRITE, &compilerID);
+     *                  flags = png_get_asm_flags (png_ptr);
+     *                  flags &= ~mask;
+     *                  png_set_asm_flags (png_ptr, flags);
+     */
+
+#if (defined(__i386__) || defined(_M_IX86)) && \
+    defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+    /*
+     * WARNING:  This preprocessor approach means that the following code
+     *           cannot be used with a libpng DLL older than 1.2.0--the
+     *           compiled-in symbols for the new functions will not exist.
+     *           (Could use dlopen() and dlsym() on Unix and corresponding
+     *           calls for Windows, but not portable...)
+     */
+    {
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+        png_uint_32 mmx_disable_mask = 0;
+        png_uint_32 asm_flags, mmx_mask;
+        int compilerID;
+
+        if (mainprog_ptr->nommxfilters)
+            mmx_disable_mask |= ( PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                                | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH );
+        if (mainprog_ptr->nommxcombine)
+            mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_COMBINE_ROW;
+        if (mainprog_ptr->nommxinterlace)
+            mmx_disable_mask |= PNG_ASM_FLAG_MMX_READ_INTERLACE;
+        asm_flags = png_get_asm_flags(png_ptr);
+        png_set_asm_flags(png_ptr, asm_flags & ~mmx_disable_mask);
+
+
+        /* Now query libpng's asm settings, just for yuks.  Note that this
+         * differs from the querying of its *potential* MMX capabilities
+         * in readpng2_version_info(); this is true runtime verification. */
+
+        asm_flags = png_get_asm_flags(png_ptr);
+        mmx_mask = png_get_mmx_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE,
+          &compilerID);
+        if (asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED)
+            fprintf(stderr,
+              "  MMX support (%s version) is compiled into libpng\n",
+              compilerID == 1? "MSVC++" :
+              (compilerID == 2? "GNU C" : "unknown"));
+        else
+            fprintf(stderr, "  MMX support is not compiled into libpng\n");
+        fprintf(stderr, "  MMX instructions are %ssupported by CPU\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU)? "" : "not ");
+        fprintf(stderr, "  MMX read support for combining rows is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)? "en" : "dis");
+        fprintf(stderr,
+          "  MMX read support for expanding interlacing is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"sub\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"up\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"avg\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "en" : "dis");
+        fprintf(stderr, "  MMX read support for \"Paeth\" filter is %sabled\n",
+          (asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "en" : "dis");
+        asm_flags &= (mmx_mask & ~( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                                  | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                                  | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ));
+        if (asm_flags)
+            fprintf(stderr,
+              "  additional MMX support is also enabled (0x%02lx)\n",
+              asm_flags);
+#else  /* !PNG_ASSEMBLER_CODE_SUPPORTED */
+        fprintf(stderr, "  MMX querying is disabled in libpng.\n");
+#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
+    }
+#endif
+
+
    /* make sure we save our pointers for use in readpng2_decode_data() */

    mainprog_ptr->png_ptr = png_ptr;
@@ -370,6 +530,7 @@ static void readpng2_end_callback(png_structp png_ptr, png_infop info_ptr)

    (*mainprog_ptr->mainprog_finish_display)();

+    info_ptr = info_ptr; /* without this the compiler whines about info_ptr */

    /* all done */

--- a/contrib/msvctest/msvctest.dsp
+++ b/contrib/msvctest/msvctest.dsp
@@ -54,7 +54,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll\libpng1.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll\libpng2.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\dll
 SOURCE="$(InputPath)"
@@ -84,7 +84,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_dbg\libpng1d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_dbg\libpng2d.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\dll_dbg
 SOURCE="$(InputPath)"
@@ -114,7 +114,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /machine:I386
-# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_asm\libpng1a.lib /nologo /subsystem:console /machine:I386
+# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_asm\libpng2a.lib /nologo /subsystem:console /machine:I386
 # Begin Special Build Tool
 OutDir=.\dll_asm
 SOURCE="$(InputPath)"
@@ -144,7 +144,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_dbga\libpng1b.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
+# ADD LINK32 ..\..\projects\msvc\win32\libpng\dll_dbga\libpng2b.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
 # Begin Special Build Tool
 OutDir=.\dll_dbga
 SOURCE="$(InputPath)"
--- a/contrib/visupng/PngFile.c
+++ b/contrib/visupng/PngFile.c
@@ -370,14 +370,14 @@ BOOL PngSaveImage (PTSTR pstrFileName, png_byte *pDiData,
        
        // clean up after the write, and free any memory allocated
        
-        png_destroy_write_struct(&png_ptr, &info_ptr);
+        png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
        
        // yepp, done
    }

    Catch (msg)
    {
-        png_destroy_write_struct(&png_ptr, &info_ptr);
+        png_destroy_write_struct(&png_ptr, (png_infopp) NULL);

        if(ppbRowPointers)
            free (ppbRowPointers);
--- a/contrib/visupng/VisualPng.dsp
+++ b/contrib/visupng/VisualPng.dsp
@@ -59,8 +59,8 @@ BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
 LINK32=link.exe
-# ADD BASE LINK32 libpng1.lib zlibd.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"libpng" /libpath:"zlib"
-# ADD LINK32 libpng1.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"..\..\projects\msvc\win32\libpng\dll"
+# ADD BASE LINK32 libpng2.lib zlibd.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"libpng" /libpath:"zlib"
+# ADD LINK32 libpng2.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"..\..\projects\msvc\win32\libpng\dll"
 # Begin Special Build Tool
 OutDir=.\dll
 SOURCE="$(InputPath)"
@@ -92,9 +92,9 @@ BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
 LINK32=link.exe
-# ADD BASE LINK32 libpng1.lib zlibd.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"libpng" /libpath:"zlib"
+# ADD BASE LINK32 libpng2.lib zlibd.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"libpng" /libpath:"zlib"
 # SUBTRACT BASE LINK32 /nodefaultlib
-# ADD LINK32 libpng1d.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"..\..\projects\msvc\win32\libpng\dll_dbg"
+# ADD LINK32 libpng2d.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"..\..\projects\msvc\win32\libpng\dll_dbg"
 # SUBTRACT LINK32 /nodefaultlib
 # Begin Special Build Tool
 OutDir=.\dll_dbg
@@ -128,7 +128,7 @@ BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
 LINK32=link.exe
-# ADD BASE LINK32 libpng1.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"..\..\projects\msvc\win32\libpng\dll"
+# ADD BASE LINK32 libpng2.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"..\..\projects\msvc\win32\libpng\dll"
 # ADD LINK32 libpng.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /machine:I386 /libpath:"..\..\projects\msvc\win32\libpng\lib"
 # Begin Special Build Tool
 OutDir=.\lib
@@ -161,7 +161,7 @@ BSC32=bscmake.exe
 # ADD BASE BSC32 /nologo
 # ADD BSC32 /nologo
 LINK32=link.exe
-# ADD BASE LINK32 libpng1d.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"..\..\projects\msvc\win32\libpng\dll_dbg"
+# ADD BASE LINK32 libpng2d.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"..\..\projects\msvc\win32\libpng\dll_dbg"
 # SUBTRACT BASE LINK32 /nodefaultlib
 # ADD LINK32 libpng.lib kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:windows /debug /machine:I386 /nodefaultlib:"libc" /pdbtype:sept /libpath:"..\..\projects\msvc\win32\libpng\lib_dbg"
 # SUBTRACT LINK32 /nodefaultlib
--- a/example.c
+++ b/example.c
@@ -338,7 +338,8 @@ void read_png(FILE *fp, unsigned int sig_read)  /* file is already open */

   for (row = 0; row < height; row++)
   {
-      row_pointers[row] = malloc(png_get_rowbytes(png_ptr, info_ptr));
+      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 */
@@ -603,7 +604,8 @@ void write_png(char *file_name /* , ... other image information ... */)
      PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);

   /* set the palette if there is one.  REQUIRED for indexed-color images */
-   palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
+   palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
+             * sizeof (png_color));
   /* ... 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
--- a/libpng.3
+++ b/libpng.3
@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "March 30, 2001"
+.TH LIBPNG 3 "May 7, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta2
 .SH SYNOPSIS
 \fI\fB

@@ -100,6 +100,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBpng_uint_32 png_get_asm_flags (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
 \fBpng_byte png_get_bit_depth (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP

 \fI\fB
@@ -192,6 +196,18 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBpng_byte png_get_mmx_bitdepth_threshold (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_mmx_flagmask (int \fP\fIflag_select\fP\fB, int \fI*compilerID\fP\fB);\fP
+
+\fI\fB
+
+\fBpng_uint_32 png_get_mmx_rowbytes_threshold (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
 \fBpng_uint_32 png_get_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP

 \fI\fB
@@ -334,6 +350,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBint png_mmx_support \fI(void\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_permit_empty_plte (png_structp \fP\fIpng_ptr\fP\fB, int \fIempty_plte_permitted\fP\fB);\fP

 \fI\fB
@@ -384,6 +404,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBpng_set_asm_flags (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIasm_flags\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP

 \fI\fB
@@ -512,6 +536,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBpng_set_mmx_thresholds (png_structp \fP\fIpng_ptr\fP\fB, png_byte \fP\fImmx_bitdepth_threshold\fP\fB, png_uint_32 \fImmx_rowbytes_threshold\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP

 \fI\fB
@@ -604,6 +632,12 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBvoid png_set_strip_error_numbers (png_structp \fIpng_ptr,
+
+\fBpng_uint_32 \fIstrip_mode\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP

 \fI\fB
@@ -747,10 +781,10 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.0.10 - March 30, 2001
+ libpng version 1.2.0beta2 - May 7, 2001
 Updated and distributed by Glenn Randers-Pehrson
 <randeg@alum.rpi.edu>
- Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
+ Copyright (c) 1998-2001 Glenn Randers-Pehrson
 For conditions of distribution and use, see copyright
 notice in png.h.

@@ -1033,7 +1067,8 @@ called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function

-    void read_row_callback(png_ptr ptr, png_uint_32 row, int pass);
+    void read_row_callback(png_ptr ptr, png_uint_32 row,
+       int pass);
    {
      /* put your code here */
    }
@@ -2142,10 +2177,9 @@ png_infop info_ptr;

 /* This function is called when each row of image
    data is complete */
-
 void
 row_callback(png_structp png_ptr, png_bytep new_row,
- png_uint_32 row_num, int pass)
+    png_uint_32 row_num, int pass)
 {
    /* If the image is interlaced, and you turned
       on the interlace handler, this function will
@@ -3061,6 +3095,10 @@ Your replacement memory functions must have prototypes as follows:
       png_uint_32 size);
    void free_fn(png_structp png_ptr, png_voidp ptr);

+Your malloc_fn() can return NULL in case of failure.  The png_malloc()
+function will call png_error() if it receives a NULL from the system
+memory allocator or from your replacement malloc_fn().
+
 Input/Output in libpng is done through png_read() and png_write(),
 which currently just call fread() and fwrite().  The FILE * is stored in
 png_struct and is initialized via png_init_io().  If you wish to change
@@ -3387,8 +3425,106 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
 having level = 0 will be printed.  There aren't any such statements in
 this version of libpng, but if you insert some they will be printed.

+.SH VI.  Runtime optimization

-.SH VI.  MNG support
+A new feature in libpng 1.2.0 is the ability to dynamically switch between
+standard and optimized versions of some routines.  Currently these are
+limited to three computationally intensive tasks when reading PNG files:
+decoding row filters, expanding interlacing, and combining interlaced or
+transparent row data with previous row data.  Currently the optimized
+versions are available only for x86 (Intel, AMD, etc.) platforms with
+MMX support, though this may change in future versions.  (For example,
+the non-MMX assembler optimizations for zlib might become similarly
+runtime-selectable in future releases, in which case libpng could be
+extended to support them.  Alternatively, the compile-time choice of
+floating-point versus integer routines for gamma correction might become
+runtime-selectable.)
+
+Because such optimizations tend to be very platform- and compiler-dependent,
+both in how they are written and in how they perform, the new runtime code
+in libpng has been written to allow programs to query, enable, and disable
+either specific optimizations or all such optimizations.  For example, to
+enable all possible optimizations (bearing in mind that some "optimizations"
+may actually run more slowly in rare cases):
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       png_uint_32 mask, flags;
+
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags | mask);
+    #endif
+
+To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
+by itself when calling png_get_asm_flagmask(); similarly for optimizing
+only writing.  To disable all optimizations:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags & ~mask);
+    #endif
+
+To enable or disable only MMX-related features, use png_get_mmx_flagmask()
+in place of png_get_asm_flagmask().  The mmx version takes one additional
+parameter:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
+       int compilerID;
+
+       mask = png_get_mmx_flagmask(selection, &compilerID);
+    #endif
+
+On return, compilerID will indicate which version of the MMX assembler
+optimizations was compiled.  Currently two flavors exist:  Microsoft
+Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
+On non-x86 platforms or on systems compiled without MMX optimizations, a
+value of -1 is used.
+
+Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
+all valid, settable optimization bits for the version of the library that's
+currently in use.  In the case of shared (dynamically linked) libraries,
+this may include optimizations that did not exist at the time the code was
+written and compiled.  It is also possible, of course, to enable only known,
+specific optimizations; for example:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+       png_set_asm_flags(png_ptr, flags);
+    #endif
+
+This method would enable only the MMX read-optimizations available at the
+time of libpng 1.2.0's release, regardless of whether a later version of
+the DLL were actually being used.  (Also note that these functions did not
+exist in versions older than 1.2.0, so any attempt to run a dynamically
+linked app on such an older version would fail.)
+
+To determine whether the processor supports MMX instructions at all, use
+the png_mmx_support() function:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       mmxsupport = png_mmx_support();
+    #endif
+
+It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
+is compiled but MMX is not supported by the processor, or 1 if MMX support
+is fully available.  Note that png_mmx_support(), png_get_mmx_flagmask(),
+and png_get_asm_flagmask() all may be called without allocating and ini-
+tializing any PNG structures (for example, as part of a usage screen or
+"about" box).
+
+For more extensive examples of runtime querying, enabling and disabling
+of optimized features, see contrib/gregbook/readpng2.c in the libpng
+source-code distribution.
+
+
+.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.
@@ -3413,7 +3549,7 @@ or any other MNG chunks; your application must provide its own support for
 them.  You may wish to consider using libmng (available at
 http://www.libmng.com) instead.

-.SH VII.  Changes to Libpng from version 0.88
+.SH VIII.  Changes to Libpng from version 0.88

 It should be noted that versions of libpng later than 0.96 are not
 distributed by the original libpng author, Guy Schalnat, nor by
@@ -3462,15 +3598,15 @@ application:

   png_uint_32 application_vn = PNG_LIBPNG_VER;

-.SH VIII. Y2K Compliance in libpng
+.SH IX. Y2K Compliance in libpng

-March 30, 2001
+May 7, 2001

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

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.10 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0beta2 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
@@ -3579,6 +3715,11 @@ the first widely used release:
 1.0.10beta1          1    10010  2.1.0.10beta1
 1.0.10rc1            1    10010  2.1.0.10rc1
 1.0.10               1    10010  2.1.0.10
+ 1.0.11beta1-3        1    10011  2.1.0.11beta1-3
+ 1.0.11rc1            1    10011  2.1.0.11rc1
+ 1.0.11               1    10011  2.1.0.11
+ 1.1.0a-f             1    10100  2.1.1.0 abandoned
+ 1.2.0beta1           2    10200  2.1.2.0beta1

 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3636,7 +3777,7 @@ possible without all of you.

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

-Libpng version 1.0.10 - March 30, 2001:
+Libpng version 1.2.0beta2 - May 7, 2001:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).

@@ -3653,7 +3794,7 @@ included in the libpng distribution, the latter shall prevail.)
 If you modify libpng you may insert additional notices immediately following
 this sentence.

-libpng versions 1.0.7, July 1, 2000, through  1.0.10, March 30, 2001, are
+libpng versions 1.0.7, July 1, 2000, through  1.2.0beta2, May 7, 2001, are
 Copyright (c) 2000-2001 Glenn Randers-Pehrson, and are
 distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -3745,7 +3886,7 @@ certification mark of the Open Source Initiative.

 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-March 30, 2001
+May 7, 2001

 .\" end of man page

--- a/libpng.txt
+++ b/libpng.txt
@@ -1,9 +1,9 @@
 libpng.txt - A description on how to use and modify libpng

- libpng version 1.0.10 - March 30, 2001
+ libpng version 1.2.0beta2 - May 7, 2001
 Updated and distributed by Glenn Randers-Pehrson
 <randeg@alum.rpi.edu>
- Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson
+ Copyright (c) 1998-2001 Glenn Randers-Pehrson
 For conditions of distribution and use, see copyright
 notice in png.h.

@@ -286,7 +286,8 @@ called after each row has been read, which you can use to control
 a progress meter or the like.  It's demonstrated in pngtest.c.
 You must supply a function

-    void read_row_callback(png_ptr ptr, png_uint_32 row, int pass);
+    void read_row_callback(png_ptr ptr, png_uint_32 row,
+       int pass);
    {
      /* put your code here */
    }
@@ -1395,10 +1396,9 @@ png_infop info_ptr;

 /* This function is called when each row of image
    data is complete */
-
 void
 row_callback(png_structp png_ptr, png_bytep new_row,
- png_uint_32 row_num, int pass)
+    png_uint_32 row_num, int pass)
 {
    /* If the image is interlaced, and you turned
       on the interlace handler, this function will
@@ -2314,6 +2314,10 @@ Your replacement memory functions must have prototypes as follows:
       png_uint_32 size);
    void free_fn(png_structp png_ptr, png_voidp ptr);

+Your malloc_fn() can return NULL in case of failure.  The png_malloc()
+function will call png_error() if it receives a NULL from the system
+memory allocator or from your replacement malloc_fn().
+
 Input/Output in libpng is done through png_read() and png_write(),
 which currently just call fread() and fwrite().  The FILE * is stored in
 png_struct and is initialized via png_init_io().  If you wish to change
@@ -2640,8 +2644,106 @@ When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
 having level = 0 will be printed.  There aren't any such statements in
 this version of libpng, but if you insert some they will be printed.

+VI.  Runtime optimization

-VI.  MNG support
+A new feature in libpng 1.2.0 is the ability to dynamically switch between
+standard and optimized versions of some routines.  Currently these are
+limited to three computationally intensive tasks when reading PNG files:
+decoding row filters, expanding interlacing, and combining interlaced or
+transparent row data with previous row data.  Currently the optimized
+versions are available only for x86 (Intel, AMD, etc.) platforms with
+MMX support, though this may change in future versions.  (For example,
+the non-MMX assembler optimizations for zlib might become similarly
+runtime-selectable in future releases, in which case libpng could be
+extended to support them.  Alternatively, the compile-time choice of
+floating-point versus integer routines for gamma correction might become
+runtime-selectable.)
+
+Because such optimizations tend to be very platform- and compiler-dependent,
+both in how they are written and in how they perform, the new runtime code
+in libpng has been written to allow programs to query, enable, and disable
+either specific optimizations or all such optimizations.  For example, to
+enable all possible optimizations (bearing in mind that some "optimizations"
+may actually run more slowly in rare cases):
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       png_uint_32 mask, flags;
+
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags | mask);
+    #endif
+
+To enable only optimizations relevant to reading PNGs, use PNG_SELECT_READ
+by itself when calling png_get_asm_flagmask(); similarly for optimizing
+only writing.  To disable all optimizations:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = png_get_asm_flags(png_ptr);
+       mask = png_get_asm_flagmask(PNG_SELECT_READ | PNG_SELECT_WRITE);
+       png_set_asm_flags(png_ptr, flags & ~mask);
+    #endif
+
+To enable or disable only MMX-related features, use png_get_mmx_flagmask()
+in place of png_get_asm_flagmask().  The mmx version takes one additional
+parameter:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       int selection = PNG_SELECT_READ | PNG_SELECT_WRITE;
+       int compilerID;
+
+       mask = png_get_mmx_flagmask(selection, &compilerID);
+    #endif
+
+On return, compilerID will indicate which version of the MMX assembler
+optimizations was compiled.  Currently two flavors exist:  Microsoft
+Visual C++ (compilerID == 1) and GNU C (a.k.a. gcc/gas, compilerID == 2).
+On non-x86 platforms or on systems compiled without MMX optimizations, a
+value of -1 is used.
+
+Note that both png_get_asm_flagmask() and png_get_mmx_flagmask() return
+all valid, settable optimization bits for the version of the library that's
+currently in use.  In the case of shared (dynamically linked) libraries,
+this may include optimizations that did not exist at the time the code was
+written and compiled.  It is also possible, of course, to enable only known,
+specific optimizations; for example:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       flags = PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+             | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+             | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+       png_set_asm_flags(png_ptr, flags);
+    #endif
+
+This method would enable only the MMX read-optimizations available at the
+time of libpng 1.2.0's release, regardless of whether a later version of
+the DLL were actually being used.  (Also note that these functions did not
+exist in versions older than 1.2.0, so any attempt to run a dynamically
+linked app on such an older version would fail.)
+
+To determine whether the processor supports MMX instructions at all, use
+the png_mmx_support() function:
+
+    #if defined(PNG_LIBPNG_VER) && (PNG_LIBPNG_VER >= 10200)
+       mmxsupport = png_mmx_support();
+    #endif
+
+It returns -1 if MMX support is not compiled into libpng, 0 if MMX code
+is compiled but MMX is not supported by the processor, or 1 if MMX support
+is fully available.  Note that png_mmx_support(), png_get_mmx_flagmask(),
+and png_get_asm_flagmask() all may be called without allocating and ini-
+tializing any PNG structures (for example, as part of a usage screen or
+"about" box).
+
+For more extensive examples of runtime querying, enabling and disabling
+of optimized features, see contrib/gregbook/readpng2.c in the libpng
+source-code distribution.
+
+
+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.
@@ -2666,7 +2768,7 @@ or any other MNG chunks; your application must provide its own support for
 them.  You may wish to consider using libmng (available at
 http://www.libmng.com) instead.

-VII.  Changes to Libpng from version 0.88
+VIII.  Changes to Libpng from version 0.88

 It should be noted that versions of libpng later than 0.96 are not
 distributed by the original libpng author, Guy Schalnat, nor by
@@ -2715,15 +2817,15 @@ application:

   png_uint_32 application_vn = PNG_LIBPNG_VER;

-VIII. Y2K Compliance in libpng
+IX. Y2K Compliance in libpng

-March 30, 2001
+May 7, 2001

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

 This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.0.10 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0beta2 are Y2K compliant.  It is my belief that earlier
 versions were also Y2K compliant.

 Libpng only has three year fields.  One is a 2-byte unsigned integer that
--- a/libpngpf.3
+++ b/libpngpf.3
@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "March 30, 2001"
+.TH LIBPNGPF 3 "May 7, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta2
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -283,6 +283,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.10

 \fI\fB

+\fBvoid png_init_mmx_flags (png_structp \fIpng_ptr\fP\fB);\fP
+
+\fI\fB
+
 \fBvoid png_init_read_transformations (png_structp \fIpng_ptr\fP\fB);\fP

 \fI\fB
--- a/png.5
+++ b/png.5
@@ -1,4 +1,4 @@
-.TH PNG 5 "March 30, 2001"
+.TH PNG 5 "May 7, 2001"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION
--- a/png.c
+++ b/png.c
@@ -1,7 +1,7 @@

 /* png.c - location for general purpose libpng functions
 *
- * libpng version 1.0.10 - March 30, 2001
+ * libpng version 1.2.0beta2 - May 7, 2001
 * Copyright (c) 1998-2001 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.)
@@ -13,14 +13,14 @@
 #include "png.h"

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_10 Your_png_h_is_not_version_1_0_10;
+typedef version_1_2_0beta2 Your_png_h_is_not_version_1_2_0beta2;

 /* Version information for C files.  This had better match the version
 * string defined in png.h.  */

 #ifdef PNG_USE_GLOBAL_ARRAYS
 /* png_libpng_ver was changed to a function in version 1.0.5c */
-const char png_libpng_ver[18] = "1.0.10";
+const char png_libpng_ver[18] = "1.2.0beta2";

 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -135,7 +135,7 @@ png_check_sig(png_bytep sig, int num)
 }

 /* Function to allocate memory for zlib and clear it to 0. */
-voidpf PNGAPI
+voidpf /* PRIVATE */
 png_zalloc(voidpf png_ptr, uInt items, uInt size)
 {
   png_uint_32 num_bytes = (png_uint_32)items * size;
@@ -157,7 +157,7 @@ png_zalloc(voidpf png_ptr, uInt items, uInt size)
 }

 /* function to free memory for zlib */
-void PNGAPI
+void /* PRIVATE */
 png_zfree(voidpf png_ptr, voidpf ptr)
 {
   png_free((png_structp)png_ptr, (png_voidp)ptr);
@@ -255,7 +255,7 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
 * and applications using it are urged to use png_create_info_struct()
 * instead.
 */
-void PNGAPI
+void /* PRIVATE */
 png_info_init(png_infop info_ptr)
 {
   png_debug(1, "in png_info_init\n");
@@ -282,7 +282,8 @@ png_data_freer(png_structp png_ptr, png_infop info_ptr,
 #endif

 void PNGAPI
-png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
+png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask,
+   int num)
 {
   png_debug(1, "in png_free_data\n");
   if (png_ptr == NULL || info_ptr == NULL)
@@ -582,31 +583,31 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
   }

 #if defined(_WIN32_WCE)
-  {
-     wchar_t time_buf[29];
-     wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
-              ptime->day % 32, short_months[(ptime->month - 1) % 12],
-              ptime->year, ptime->hour % 24, ptime->minute % 60,
-              ptime->second % 61);
-     WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 29,
-        NULL, NULL);
-  }
+   {
+      wchar_t time_buf[29];
+      wsprintf(time_buf, TEXT("%d %S %d %02d:%02d:%02d +0000"),
+          ptime->day % 32, short_months[(ptime->month - 1) % 12],
+        ptime->year, ptime->hour % 24, ptime->minute % 60,
+          ptime->second % 61);
+      WideCharToMultiByte(CP_ACP, 0, time_buf, -1, png_ptr->time_buffer, 29,
+          NULL, NULL);
+   }
 #else
 #ifdef USE_FAR_KEYWORD
   {
      char near_time_buf[29];
      sprintf(near_time_buf, "%d %s %d %02d:%02d:%02d +0000",
-               ptime->day % 32, short_months[(ptime->month - 1) % 12],
-               ptime->year, ptime->hour % 24, ptime->minute % 60,
-               ptime->second % 61);
+          ptime->day % 32, short_months[(ptime->month - 1) % 12],
+          ptime->year, ptime->hour % 24, ptime->minute % 60,
+          ptime->second % 61);
      png_memcpy(png_ptr->time_buffer, near_time_buf,
-      29*sizeof(char));
+          29*sizeof(char));
   }
 #else
   sprintf(png_ptr->time_buffer, "%d %s %d %02d:%02d:%02d +0000",
-               ptime->day % 32, short_months[(ptime->month - 1) % 12],
-               ptime->year, ptime->hour % 24, ptime->minute % 60,
-               ptime->second % 61);
+       ptime->day % 32, short_months[(ptime->month - 1) % 12],
+       ptime->year, ptime->hour % 24, ptime->minute % 60,
+       ptime->second % 61);
 #endif
 #endif /* _WIN32_WCE */
   return ((png_charp)png_ptr->time_buffer);
@@ -626,7 +627,7 @@ png_charp PNGAPI
 png_get_copyright(png_structp png_ptr)
 {
   if (png_ptr != NULL || png_ptr == NULL)  /* silence compiler warning */
-   return ((png_charp) "\n libpng version 1.0.10 - March 30, 2001\n\
+   return ((png_charp) "\n libpng version 1.2.0beta2 - May 7, 2001\n\
   Copyright (c) 1998-2001 Glenn Randers-Pehrson\n\
   Copyright (c) 1996, 1997 Andreas Dilger\n\
   Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.\n");
@@ -644,8 +645,8 @@ png_get_libpng_ver(png_structp png_ptr)
 {
   /* Version of *.c files used when building libpng */
   if(png_ptr != NULL) /* silence compiler warning about unused png_ptr */
-      return((png_charp) "1.0.10");
-   return((png_charp) "1.0.10");
+      return((png_charp) "1.2.0beta2");
+   return((png_charp) "1.2.0beta2");
 }

 png_charp PNGAPI
@@ -667,7 +668,7 @@ png_get_header_version(png_structp png_ptr)
 }

 #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-int PNGAPI
+int /* PRIVATE */
 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 */
@@ -695,17 +696,64 @@ png_uint_32 PNGAPI
 png_access_version_number(void)
 {
   /* Version of *.c files used when building libpng */
-   return((png_uint_32) 10010L);
+   return((png_uint_32) 10200L);
 }


-#if 0 /* delay this until version 1.2.0 */
-/* this function was added to libpng 1.0.9 (porting aid to libpng-1.2.0) */
-#ifndef PNG_ASSEMBLER_CODE_SUPPORTED
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+    /* GRR:  could add this:   && defined(PNG_MMX_CODE_SUPPORTED) */
+/* this INTERNAL function was added to libpng 1.2.0 */
+void /* PRIVATE */
+png_init_mmx_flags (png_structp png_ptr)
+{
+    png_ptr->mmx_rowbytes_threshold = 0;
+    png_ptr->mmx_bitdepth_threshold = 0;
+
+#if (defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD))
+
+    png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_COMPILED;
+
+    if (png_mmx_support()) {
+        png_ptr->asm_flags |= PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
+                              | PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
+#endif
+#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
+                              | PNG_ASM_FLAG_MMX_READ_INTERLACE
+#endif
+#ifndef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
+                              ;
+#else
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_SUB
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_UP
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_AVG
+                              | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+
+        png_ptr->mmx_rowbytes_threshold = PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT;
+        png_ptr->mmx_bitdepth_threshold = PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT;
+#endif
+    } else {
+        png_ptr->asm_flags &= ~( PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
+                               | PNG_MMX_READ_FLAGS
+                               | PNG_MMX_WRITE_FLAGS );
+    }
+
+#else /* !((PNGVCRD || PNGGCCRD) && PNG_ASSEMBLER_CODE_SUPPORTED)) */
+
+    /* clear all MMX flags; no support is compiled in */
+    png_ptr->asm_flags &= ~( PNG_MMX_FLAGS );
+
+#endif /* ?(PNGVCRD || PNGGCCRD) */
+}
+
+#endif /* !(PNG_ASSEMBLER_CODE_SUPPORTED) */
+
+/* this function was added to libpng 1.2.0 */
+#if !defined(PNG_USE_PNGGCCRD) && \
+    !(defined(PNG_ASSEMBLER_CODE_SUPPORTED) && defined(PNG_USE_PNGVCRD))
 int PNGAPI
 png_mmx_support(void)
 {
    return -1;
 }
 #endif
-#endif /* 0 */
--- a/png.h
+++ b/png.h
@@ -1,7 +1,7 @@

 /* png.h - header file for PNG reference library
 *
- * libpng version 1.0.10 - March 30, 2001
+ * libpng version 1.2.0beta2 - May 7, 2001
 * Copyright (c) 1998-2001 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.)
@@ -9,7 +9,7 @@
 * Authors and maintainers:
 *  libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
 *  libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- *  libpng versions 0.97, January 1998, through 1.0.10 - March 30, 2001: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.0beta2 - May 7, 2001: Glenn
 *  See also "Contributing Authors", below.
 *
 * Note about libpng version numbers:
@@ -67,6 +67,11 @@
 *    1.0.10beta1              1    10010  2.1.0.10beta1
 *    1.0.10rc1                1    10010  2.1.0.10rc1
 *    1.0.10                   1    10010  2.1.0.10
+ *    1.0.11beta1-3            1    10011  2.1.0.11beta1-3
+ *    1.0.11rc1                1    10011  2.1.0.11rc1
+ *    1.0.11                   1    10011  2.1.0.11
+ *    1.1.0a-f                 1    10100  2.1.1.0 (branch abandoned)
+ *    1.2.0beta1               2    10200  2.1.2.0beta1
 *
 *    Henceforth the source version will match the shared-library major
 *    and minor numbers; the shared-library major version number will be
@@ -96,7 +101,7 @@
 * If you modify libpng you may insert additional notices immediately following
 * this sentence.
 *
- * libpng versions 1.0.7, July 1, 2000, through  1.0.10, March 30, 2001, are
+ * libpng versions 1.0.7, July 1, 2000, through  1.2.0beta2, May 7, 2001, are
 * Copyright (c) 2000, 2001 Glenn Randers-Pehrson, and are
 * distributed according to the same disclaimer and license as libpng-1.0.6
 * with the following individuals added to the list of Contributing Authors
@@ -201,13 +206,13 @@
 * Y2K compliance in libpng:
 * =========================
 *
- *    March 30, 2001
+ *    May 7, 2001
 *
 *    Since the PNG Development group is an ad-hoc body, we can't make
 *    an official declaration.
 *
 *    This is your unofficial assurance that libpng from version 0.71 and
- *    upward through 1.0.10 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.0beta2 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
@@ -263,19 +268,19 @@
 */

 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.10"
+#define PNG_LIBPNG_VER_STRING "1.2.0beta2"

 #define PNG_LIBPNG_VER_SONUM   2
 #define PNG_LIBPNG_VER_DLLNUM  %DLLNUM%

 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
-#define PNG_LIBPNG_VER_MINOR   0
-#define PNG_LIBPNG_VER_RELEASE 10
+#define PNG_LIBPNG_VER_MINOR   2
+#define PNG_LIBPNG_VER_RELEASE 0
 /* This should match the numeric part of the final component of
 * PNG_LIBPNG_VER_STRING, omitting any leading zero: */

-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  2

 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
@@ -283,14 +288,14 @@
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_TYPEMASK 7
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with STABLE only */
-#define PNG_LIBPNG_BUILD_TYPE 4
+#define PNG_LIBPNG_BUILD_TYPE 2

 /* 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 10010 /* 1.0.10 */
+#define PNG_LIBPNG_VER 10200 /* 1.2.0 */

 #ifndef PNG_VERSION_INFO_ONLY

@@ -1178,15 +1183,21 @@ struct png_struct_def

   png_byte filter_type;

+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+   png_byte     mmx_bitdepth_threshold;
+   png_uint_32  mmx_rowbytes_threshold;
+   png_uint_32  asm_flags;
+#endif
+
   png_uint_32 row_buf_size;

 };


 /* This prevents a compiler error in png_get_copyright() in png.c if png.c
-and png.h are both at * version 1.0.10
+and png.h are both at * version 1.2.0beta2
 */
-typedef png_structp version_1_0_10;
+typedef png_structp version_1_2_0beta2;

 typedef png_struct FAR * FAR * png_structpp;

@@ -2226,15 +2237,80 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
   png_ptr, png_uint_32 mng_features_permitted));
 #endif

-#if 0 /* delay these until version 1.2.0 */
+/* Added to version 1.2.0 */
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED  0x01		/* not user-settable */
+#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU    0x02		/* not user-settable */
+#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  0x04
+#define PNG_ASM_FLAG_MMX_READ_INTERLACE    0x08
+#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB   0x10
+#define PNG_ASM_FLAG_MMX_READ_FILTER_UP    0x20
+#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG   0x40
+#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80
+#define PNG_ASM_FLAGS_INITIALIZED          0x80000000	/* not user-settable */
+
+#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  \
+                           | PNG_ASM_FLAG_MMX_READ_INTERLACE    \
+                           | PNG_ASM_FLAG_MMX_READ_FILTER_SUB   \
+                           | PNG_ASM_FLAG_MMX_READ_FILTER_UP    \
+                           | PNG_ASM_FLAG_MMX_READ_FILTER_AVG   \
+                           | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH )
+#define PNG_MMX_WRITE_FLAGS ( 0 )
+
+#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \
+                      | PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU   \
+                      | PNG_MMX_READ_FLAGS                \
+                      | PNG_MMX_WRITE_FLAGS )
+
+#define PNG_SELECT_READ   1
+#define PNG_SELECT_WRITE  2
+
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask)
+   PNGARG((int flag_select, int *compilerID));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask)
+   PNGARG((int flag_select));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_asm_flags)
+   PNGARG((png_structp png_ptr));
+
+/* pngget.c */
+extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold)
+   PNGARG((png_structp png_ptr));
+
+/* pngget.c */
+extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold)
+   PNGARG((png_structp png_ptr));
+
+/* pngset.c */
+extern PNG_EXPORT(void,png_set_asm_flags)
+   PNGARG((png_structp png_ptr, png_uint_32 asm_flags));
+
+/* pngset.c */
+extern PNG_EXPORT(void,png_set_mmx_thresholds)
+   PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold,
+   png_uint_32 mmx_rowbytes_threshold));
+
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+
 /* png.c, pnggccrd.c, or pngvcrd.c */
 extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
+
+/* Strip the prepended error numbers ("#nnn ") from error and warning
+ * 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

 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */

 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.10 - March 30, 2001 (header)\n"
+   " libpng version 1.2.0beta2 - May 7, 2001 (header)\n"

 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
@@ -2357,6 +2433,8 @@ extern PNG_EXPORT(int,png_mmx_support) PNGARG((void));
 #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS      0x8000L
 #define PNG_FLAG_KEEP_UNSAFE_CHUNKS       0x10000L
 #define PNG_FLAG_LIBRARY_MISMATCH         0x20000L
+#define PNG_FLAG_STRIP_ERROR_NUMBERS      0x40000L
+#define PNG_FLAG_STRIP_ERROR_TEXT         0x80000L

 /* For use in png_set_keep_unknown, png_handle_as_unknown */
 #define HANDLE_CHUNK_AS_DEFAULT   0
@@ -3034,6 +3112,10 @@ PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info,
   png_bytep row));
 #endif

+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+/* png.c */ /* PRIVATE */
+PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr));
+#endif
 /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */

 #endif /* PNG_INTERNAL */
--- a/pngasmrd.h
+++ b/pngasmrd.h
@@ -1,6 +1,6 @@
 /* pngasmrd.h - assembler version of utilities to read a PNG file
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 2001 Glenn Randers-Pehrson
 *
--- a/pngconf.h
+++ b/pngconf.h
@@ -1,6 +1,6 @@
 /* pngconf.h - machine configurable file for libpng
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -45,15 +45,13 @@
 #  define PNG_WRITE_SUPPORTED
 #endif

-/* Enable if you need to support PNGs that are embedded in MNG
-   datastreams */
-/*
+/* Enabled by default in 1.2.0.  You can disable this if you don't need to
+   support PNGs that are embedded in MNG datastreams */
 #ifndef PNG_NO_MNG_FEATURES
 #  ifndef PNG_MNG_FEATURES_SUPPORTED
 #    define PNG_MNG_FEATURES_SUPPORTED
 #  endif
 #endif
-*/

 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED
 #  ifndef PNG_FLOATING_POINT_SUPPORTED
@@ -91,47 +89,58 @@
 * this bit of #ifdefs will define the 'correct' config variables based on
 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but
 * unnecessary.
+ *
+ * Also, the precedence order is:
+ *   ALL_STATIC (since we can't #undef something outside our namespace)
+ *   PNG_BUILD_DLL
+ *   PNG_STATIC
+ *   (nothing) == PNG_USE_DLL 
 */
 #if defined(__CYGWIN__)
-#  if defined(PNG_BUILD_DLL)
+#  if defined(ALL_STATIC)
+#    if defined(PNG_BUILD_DLL)
+#      undef PNG_BUILD_DLL
+#    endif
 #    if defined(PNG_USE_DLL)
 #      undef PNG_USE_DLL
 #    endif
-#    if !defined(PNG_DLL)
-#      define PNG_DLL
+#    if defined(PNG_DLL)
+#      undef PNG_DLL
 #    endif
-#    if defined(PNG_STATIC)
-#      undef PNG_STATIC
-#    endif
-#  else
-#    if defined(ALL_STATIC)
+#    if !defined(PNG_STATIC)
 #      define PNG_STATIC
 #    endif
-#    if defined(PNG_STATIC)
+#  else
+#    if defined (PNG_BUILD_DLL)
+#      if defined(PNG_STATIC)
+#        undef PNG_STATIC
+#      endif
 #      if defined(PNG_USE_DLL)
 #        undef PNG_USE_DLL
 #      endif
-#      if defined(PNG_DLL)
-#        undef PNG_DLL
+#      if !defined(PNG_DLL)
+#        define PNG_DLL
 #      endif
 #    else
-#      if defined(PNG_USE_DLL)
+#      if defined(PNG_STATIC)
+#        if defined(PNG_USE_DLL)
+#          undef PNG_USE_DLL
+#        endif
+#        if defined(PNG_DLL)
+#          undef PNG_DLL
+#        endif
+#      else
+#        if !defined(PNG_USE_DLL)
+#          define PNG_USE_DLL
+#        endif
 #        if !defined(PNG_DLL)
 #          define PNG_DLL
 #        endif
-#      else
-#        if defined(PNG_DLL)
-#           define PNG_USE_DLL
-#        else
-#           define PNG_USE_DLL
-#           define PNG_DLL
-#        endif
-#      endif
-#    endif
+#      endif  
+#    endif  
 #  endif
 #endif

-
 /* This protects us against compilers that run on a windowing system
 * and thus don't have or would rather us not use the stdio types:
 * stdin, stdout, and stderr.  The only one currently used is stderr
@@ -248,12 +257,6 @@
 #  endif /* __linux__ */
 #endif /* PNG_SETJMP_SUPPORTED */

-#if defined(_AIX) && defined(__xlC__)
-/* This prevents "AIX/xlC" from generating an "index(s,c)" macro in strings.h
- * that conflicts with libpng's png_color_16.index */
-#  undef __STR__
-#endif
-
 #ifdef BSD
 #  include <strings.h>
 #else
@@ -312,7 +315,8 @@
 #  include "alloc.h"
 #endif

-#ifdef _MSC_VER
+#if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \
+    defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__))
 #  include <malloc.h>
 #endif

@@ -584,6 +588,10 @@
 #  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
 #endif

+#ifndef PNG_NO_ERROR_NUMBERS
+#define PNG_ERROR_NUMBERS_SUPPORTED
+#endif
+
 #ifndef PNG_NO_WRITE_FLUSH
 #  define PNG_WRITE_FLUSH_SUPPORTED
 #endif
@@ -619,16 +627,14 @@
 #  define PNG_EASY_ACCESS_SUPPORTED
 #endif

-/* PNG_ASSEMBLER_CODE will be enabled by default in version 1.2.0 
+/* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 
   even when PNG_USE_PNGVCRD or PNG_USE_PNGGCCRD is not defined */
 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
-#  if defined(PNG_USE_PNGVCRD) || defined(PNG_USE_PNGGCCRD)
-#    ifndef PNG_ASSEMBLER_CODE_SUPPORTED
-#      define PNG_ASSEMBLER_CODE_SUPPORTED
-#    endif
-#    if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
-#      define PNG_MMX_CODE_SUPPORTED
-#    endif
+#  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
+#    define PNG_ASSEMBLER_CODE_SUPPORTED
+#  endif
+#  if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
+#    define PNG_MMX_CODE_SUPPORTED
 #  endif
 #endif

@@ -1191,10 +1197,15 @@ typedef z_stream FAR *  png_zstreamp;
 #    endif
 #    define PNGAPI __cdecl
 #  else
-#    if 0 /* ... other platforms, with other meanings */
+#    if (defined(__IBMC__) || defined(IBMCPP__)) && defined(__OS2__)
+#      define PNGAPI _System
+#      define PNG_IMPEXP
 #    else
-#       define PNGAPI
-#       define PNG_IMPEXP
+#      if 0 /* ... other platforms, with other meanings */
+#      else
+#        define PNGAPI
+#        define PNG_IMPEXP
+#      endif
 #    endif
 #  endif
 #endif
--- a/pngerror.c
+++ b/pngerror.c
@@ -1,7 +1,7 @@

 /* pngerror.c - stub functions for i/o and memory allocation
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -31,6 +31,38 @@ png_default_warning PNGARG((png_structp png_ptr,
 void PNGAPI
 png_error(png_structp png_ptr, png_const_charp message)
 {
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   char msg[16];
+   if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+   {
+     int offset = 0;
+     if (*message == '#')
+     {
+         for (offset=1; offset<15; offset++)
+            if (*(message+offset) == ' ')
+                break;
+         if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+         {
+            int i;
+            for (i=0; i<offset-1; i++)
+               msg[i]=message[i+1];
+            msg[i]='\0';
+            message=msg;
+         }
+         else
+            message+=offset;
+     }
+     else
+     {
+         if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+         {
+            msg[0]='0';        
+            msg[1]='\0';
+            message=msg;
+         }
+     }
+   }
+#endif
   if (png_ptr->error_fn != NULL)
      (*(png_ptr->error_fn))(png_ptr, message);

@@ -47,10 +79,22 @@ png_error(png_structp png_ptr, png_const_charp message)
 void PNGAPI
 png_warning(png_structp png_ptr, png_const_charp message)
 {
+     int offset = 0;
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+#endif
+   {
+     if (*message == '#')
+     {
+         for (offset=1; offset<15; offset++)
+            if (*(message+offset) == ' ')
+                break;
+     }
+   }
   if (png_ptr->warning_fn != NULL)
-      (*(png_ptr->warning_fn))(png_ptr, message);
+      (*(png_ptr->warning_fn))(png_ptr, (png_const_charp)(message+offset));
   else
-      png_default_warning(png_ptr, message);
+      png_default_warning(png_ptr, (png_const_charp)(message+offset));
 }

 /* These utilities are used internally to build an error message that relates
@@ -61,11 +105,12 @@ png_warning(png_structp png_ptr, png_const_charp message)
 */
 #define isnonalpha(c) ((c) < 41 || (c) > 122 || ((c) > 90 && (c) < 97))
 static PNG_CONST char png_digit[16] = {
-   '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'
-};
+   '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E',
+   'F' };

 static void /* PRIVATE */
-png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp message)
+png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
+   message)
 {
   int iout = 0, iin = 0;

@@ -121,6 +166,27 @@ static void /* PRIVATE */
 png_default_error(png_structp png_ptr, png_const_charp message)
 {
 #ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (*message == '#')
+   {
+     int offset;
+     char error_number[16];
+     for (offset=0; offset<15; offset++)
+     {
+         error_number[offset] = *(message+offset+1);
+         if (*(message+offset) == ' ')
+             break;
+     }
+     if((offset > 1) && (offset < 15))
+     {
+       error_number[offset-1]='\0';
+       fprintf(stderr, "libpng error no. %s: %s\n", error_number, message+offset);
+     }
+     else
+       fprintf(stderr, "libpng error: %s, offset=%d\n", message,offset);
+   }
+   else
+#endif
   fprintf(stderr, "libpng error: %s\n", message);
 #else
   if (message)
@@ -153,7 +219,29 @@ static void /* PRIVATE */
 png_default_warning(png_structp png_ptr, png_const_charp message)
 {
 #ifndef PNG_NO_CONSOLE_IO
-   fprintf(stderr, "libpng warning: %s\n", message);
+#  ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (*message == '#')
+   {
+     int offset;
+     char warning_number[16];
+     for (offset=0; offset<15; offset++)
+     {
+        warning_number[offset]=*(message+offset+1);
+        if (*(message+offset) == ' ')
+            break;
+     }
+     if((offset > 1) && (offset < 15))
+     {
+       warning_number[offset-1]='\0';
+       fprintf(stderr, "libpng warning no. %s: %s\n", warning_number,
+          message+offset);
+     }
+     else
+       fprintf(stderr, "libpng warning: %s\n", message);
+   }
+   else
+#  endif
+     fprintf(stderr, "libpng warning: %s\n", message);
 #else
   if (message)
     /* appease compiler */ ;
@@ -188,4 +276,15 @@ png_get_error_ptr(png_structp png_ptr)
 }


+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+void
+png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
+{
+   if(png_ptr != NULL)
+   {
+     png_ptr->flags &=
+       ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
+   }
+}
+#endif

--- a/pnggccrd.c
+++ b/pnggccrd.c
@@ -6,7 +6,7 @@
 *     and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
 *     for Intel's performance analysis of the MMX vs. non-MMX code.
 *
- * libpng version 1.0.10 - March 30, 2001
+ * libpng version 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * Copyright (c) 1998, Intel Corporation
@@ -203,9 +203,14 @@
 *     - "_ShiftRem.use = 40;"      should have been   "_ShiftRem.use = 48;"
 *     - "psllq _ShiftRem, %%mm2"   should have been   "psrlq _ShiftRem, %%mm2"
 *
+ * 20010101:
+ *  - added new png_init_mmx_flags() function (here only because it needs to
+ *     call mmxsupport(), which should probably become global png_mmxsupport());
+ *     modified other MMX routines to run conditionally (png_ptr->asm_flags)
+ *
 * 20010103:
 *  - renamed mmxsupport() to png_mmx_support(), with auto-set of mmx_supported,
- *     and made it public
+ *     and made it public; moved png_init_mmx_flags() to png.c as internal func
 *
 * 20010104:
 *  - removed dependency on png_read_filter_row_c() (C code already duplicated
@@ -226,7 +231,7 @@
 *     x pick one version of mmxsupport() and get rid of the other
 *     - add error messages to any remaining bogus default cases
 *     - enable pixel_depth == 8 cases in png_read_filter_row()? (test speed)
- *     - add support for runtime enable/disable/query of various MMX routines
+ *     x add support for runtime enable/disable/query of various MMX routines
 */

 /*
@@ -333,8 +338,37 @@ static int          _dif;
 static int          _patemp;	// temp variables for Paeth routine
 static int          _pbtemp;
 static int          _pctemp;
+
+static void /* PRIVATE */
+png_squelch_warnings(void)
+{
+   _dif = _dif;
+   _patemp = _patemp;
+   _pbtemp = _pbtemp;
+   _pctemp = _pctemp;
+   _const4  = _const4;
+   _const6  = _const6;
+   _MMXLength = _MMXLength;
+   _mask8_0  = _mask8_0;
+   _mask16_1 = _mask16_1;
+   _mask16_0 = _mask16_0;
+   _mask24_2 = _mask24_2;
+   _mask24_1 = _mask24_1;
+   _mask24_0 = _mask24_0;
+   _mask32_3 = _mask32_3;
+   _mask32_2 = _mask32_2;
+   _mask32_1 = _mask32_1;
+   _mask32_0 = _mask32_0;
+   _mask48_5 = _mask48_5;
+   _mask48_4 = _mask48_4;
+   _mask48_3 = _mask48_3;
+   _mask48_2 = _mask48_2;
+   _mask48_1 = _mask48_1;
+   _mask48_0 = _mask48_0;
+}
 #endif /* PNG_ASSEMBLER_CODE_SUPPORTED */

+
 static int _mmx_supported = 2;

 /*===========================================================================*/
@@ -370,9 +404,13 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
 {
   png_debug(1, "in png_combine_row (pnggccrd.c)\n");

+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
   if (_mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }
+#endif

   if (mask == 0xff)
   {
@@ -556,7 +594,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_bytep dstptr;

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported  )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && _mmx_supported */ )
            {
               png_uint_32 len;
               int diff;
@@ -689,7 +728,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_bytep dstptr;

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && _mmx_supported */ )
            {
               png_uint_32 len;
               int diff;
@@ -837,7 +877,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_bytep dstptr;

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && _mmx_supported */ )
            {
               png_uint_32 len;
               int diff;
@@ -1000,7 +1041,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_bytep dstptr;

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && _mmx_supported */ )
            {
               png_uint_32 len;
               int diff;
@@ -1170,7 +1212,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
            png_bytep dstptr;

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && _mmx_supported */ )
            {
               png_uint_32 len;
               int diff;
@@ -1436,9 +1479,13 @@ png_do_read_interlace(png_structp png_ptr)

   png_debug(1, "in png_do_read_interlace (pnggccrd.c)\n");

+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
   if (_mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }
+#endif

   if (row != NULL && row_info != NULL)
   {
@@ -1644,7 +1691,8 @@ png_do_read_interlace(png_structp png_ptr)
            /* New code by Nirav Chhatrapati - Intel Corporation */

 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-            if ( _mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)
+                /* && _mmx_supported */ )
            {
               //--------------------------------------------------------------
               if (pixel_bytes == 3)
@@ -2665,7 +2713,7 @@ png_do_read_interlace(png_structp png_ptr)



-
+#if defined(PNG_HAVE_ASSEMBLER_READ_FILTER_ROW)
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)

 // These variables are utilized in the functions below.  They are declared
@@ -2678,8 +2726,6 @@ union uAll {
  _HBClearMask = {0x7f7f7f7f7f7f7f7fLL},
  _ActiveMask, _ActiveMask2, _ActiveMaskEnd, _ShiftBpp, _ShiftRem;

-
-
 //===========================================================================//
 //                                                                           //
 //           P N G _ R E A D _ F I L T E R _ R O W _ M M X _ A V G           //
@@ -4884,9 +4930,8 @@ png_read_filter_row_mmx_up(png_row_infop row_info, png_bytep row,
 /*                                                                           */
 /*===========================================================================*/

-#if defined(PNG_HAVE_ASSEMBLER_READ_FILTER_ROW)

-// Optimized png_read_filter_row routines
+/* Optimized png_read_filter_row routines */

 void /* PRIVATE */
 png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
@@ -4904,6 +4949,8 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
 #define UseMMX_paeth  1   // GRR:  converted 20000828

   if (_mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }
 #endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
@@ -4914,13 +4961,17 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
   {
      case 0: sprintf(filnm, "none");
         break;
-      case 1: sprintf(filnm, "sub-%s", "MMX");
+      case 1: sprintf(filnm, "sub-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" : "x86");
         break;
-      case 2: sprintf(filnm, "up-%s", "MMX");
+      case 2: sprintf(filnm, "up-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" : "x86");
         break;
-      case 3: sprintf(filnm, "avg-%s", "MMX");
+      case 3: sprintf(filnm, "avg-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" : "x86");
         break;
-      case 4: sprintf(filnm, "Paeth-%s", "MMX");
+      case 4: sprintf(filnm, "Paeth-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":"x86");
         break;
      default: sprintf(filnm, "unknw");
         break;
@@ -4939,9 +4990,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep

      case PNG_FILTER_VALUE_SUB:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_sub(row_info, row);
         }
@@ -4959,14 +5010,14 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
               *rp = (png_byte)(((int)(*rp) + (int)(*lp++)) & 0xff);
               rp++;
            }
-         }  //end !UseMMX_sub
+         }  /* end !UseMMX_sub */
         break;

      case PNG_FILTER_VALUE_UP:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_up(row_info, row, prev_row);
         }
@@ -4983,14 +5034,14 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
               *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
               rp++;
            }
-         }  //end !UseMMX_up
+         }  /* end !UseMMX_up */
         break;

      case PNG_FILTER_VALUE_AVG:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_avg(row_info, row, prev_row);
         }
@@ -5017,14 +5068,14 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
                  ((int)(*pp++ + *lp++) >> 1)) & 0xff);
               rp++;
            }
-         }  //end !UseMMX_avg
+         }  /* end !UseMMX_avg */
         break;

      case PNG_FILTER_VALUE_PAETH:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_paeth(row_info, row, prev_row);
         }
@@ -5080,7 +5131,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
               *rp = (png_byte)(((int)(*rp) + p) & 0xff);
               rp++;
            }
-         }  //end !UseMMX_paeth
+         }  /* end !UseMMX_paeth */
         break;

      default:
@@ -5177,4 +5228,5 @@ png_mmx_support(void)
    return _mmx_supported;
 }

+
 #endif /* PNG_USE_PNGGCCRD */
--- a/pngget.c
+++ b/pngget.c
@@ -1,7 +1,7 @@

 /* pngget.c - retrieval of values from info struct
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -137,7 +137,7 @@ png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
 #if defined(PNG_pHYs_SUPPORTED)
   if (info_ptr->valid & PNG_INFO_pHYs)
   {
-       png_debug1(1, "in %s retrieval function\n", "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);
@@ -826,3 +826,92 @@ png_get_compression_buffer_size(png_structp png_ptr)
   return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
 }

+
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+/* 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)
+{
+    return (png_uint_32)(png_ptr? png_ptr->asm_flags : 0L);
+}
+
+/* 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)
+{
+    png_uint_32 settable_asm_flags = 0;
+
+    if (flag_select & PNG_SELECT_READ)
+        settable_asm_flags |=
+          PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+          PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+          /* no non-MMX flags yet */
+
+#if 0
+    /* GRR:  no write-flags yet, either, but someday... */
+    if (flag_select & PNG_SELECT_WRITE)
+        settable_asm_flags |=
+          PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+    return settable_asm_flags;  /* _theoretically_ settable capabilities only */
+}
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
+
+
+#if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
+    /* GRR:  could add this:   && defined(PNG_MMX_CODE_SUPPORTED) */
+/* this function was added to libpng 1.2.0 */
+png_uint_32 PNGAPI
+png_get_mmx_flagmask (int flag_select, int *compilerID)
+{
+    png_uint_32 settable_mmx_flags = 0;
+
+    if (flag_select & PNG_SELECT_READ)
+        settable_mmx_flags |=
+          PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+          PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+          PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+          PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ;
+#if 0
+    /* GRR:  no MMX write support yet, but someday... */
+    if (flag_select & PNG_SELECT_WRITE)
+        settable_mmx_flags |=
+          PNG_ASM_FLAG_MMX_WRITE_ [whatever] ;
+#endif /* 0 */
+
+    if (compilerID != NULL) {
+#ifdef PNG_USE_PNGVCRD
+        *compilerID = 1;    /* MSVC */
+#else
+#ifdef PNG_USE_PNGGCCRD
+        *compilerID = 2;    /* gcc/gas */
+#else
+        *compilerID = -1;   /* unknown (i.e., no asm/MMX code compiled) */
+#endif
+#endif
+    }
+
+    return settable_mmx_flags;  /* _theoretically_ settable capabilities only */
+}
+
+/* this function was added to libpng 1.2.0 */
+png_byte PNGAPI
+png_get_mmx_bitdepth_threshold (png_structp png_ptr)
+{
+    return (png_byte)(png_ptr? png_ptr->mmx_bitdepth_threshold : 0);
+}
+
+/* this function was added to libpng 1.2.0 */
+png_uint_32 PNGAPI
+png_get_mmx_rowbytes_threshold (png_structp png_ptr)
+{
+    return (png_uint_32)(png_ptr? png_ptr->mmx_rowbytes_threshold : 0L);
+}
+#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
--- a/pngmem.c
+++ b/pngmem.c
@@ -1,7 +1,7 @@

 /* pngmem.c - stub functions for memory allocation
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -119,7 +119,12 @@ png_malloc(png_structp png_ptr, png_uint_32 size)

 #ifdef PNG_USER_MEM_SUPPORTED
   if(png_ptr->malloc_fn != NULL)
-       return ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+   {
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+       if (ret == NULL)
+          png_error(png_ptr, "Out of memory!");
+       return (ret);
+   }
   else
       return png_malloc_default(png_ptr, size);
 }
@@ -373,15 +378,18 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn)
 png_voidp PNGAPI
 png_malloc(png_structp png_ptr, png_uint_32 size)
 {
-#ifndef PNG_USER_MEM_SUPPORTED
   png_voidp ret;
-#endif
   if (png_ptr == NULL || size == 0)
      return ((png_voidp)NULL);

 #ifdef PNG_USER_MEM_SUPPORTED
   if(png_ptr->malloc_fn != NULL)
-       return ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+   {
+       ret = ((png_voidp)(*(png_ptr->malloc_fn))(png_ptr, size));
+       if (ret == NULL)
+          png_error(png_ptr, "Out of Memory!");
+       return (ret);
+   }
   else
       return (png_malloc_default(png_ptr, size));
 }
@@ -407,9 +415,7 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
 #endif

   if (ret == NULL)
-   {
      png_error(png_ptr, "Out of Memory");
-   }

   return (ret);
 }
--- a/pngpread.c
+++ b/pngpread.c
@@ -1,7 +1,7 @@

 /* pngpread.c - read a png file in push mode
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -995,7 +995,8 @@ png_read_push_finish_row(png_structp png_ptr)

 #if defined(PNG_READ_tEXt_SUPPORTED)
 void /* PRIVATE */
-png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+   length)
 {
   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
      {
@@ -1007,7 +1008,7 @@ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length
 #ifdef PNG_MAX_MALLOC_64K
   png_ptr->skip_length = 0;  /* This may not be necessary */

-   if (length > (png_uint_32)65535L) /* Can't hold the entire string in memory */
+   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
   {
      png_warning(png_ptr, "tEXt chunk too large to fit in memory");
      png_ptr->skip_length = length - (png_uint_32)65535L;
@@ -1086,7 +1087,8 @@ png_push_read_tEXt(png_structp png_ptr, png_infop info_ptr)

 #if defined(PNG_READ_zTXt_SUPPORTED)
 void /* PRIVATE */
-png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+   length)
 {
   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
      {
@@ -1198,8 +1200,8 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)
            if (text == NULL)
            {
               text = (png_charp)png_malloc(png_ptr,
-                  (png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out +
-                     key_size + 1));
+                  (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);
@@ -1270,7 +1272,8 @@ png_push_read_zTXt(png_structp png_ptr, png_infop info_ptr)

 #if defined(PNG_READ_iTXt_SUPPORTED)
 void /* PRIVATE */
-png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32
+   length)
 {
   if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
      {
@@ -1282,7 +1285,7 @@ png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length
 #ifdef PNG_MAX_MALLOC_64K
   png_ptr->skip_length = 0;  /* This may not be necessary */

-   if (length > (png_uint_32)65535L) /* Can't hold the entire string in memory */
+   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
   {
      png_warning(png_ptr, "iTXt chunk too large to fit in memory");
      png_ptr->skip_length = length - (png_uint_32)65535L;
@@ -1380,7 +1383,8 @@ png_push_read_iTXt(png_structp png_ptr, png_infop info_ptr)
 * name or a critical chunk), the chunk is (currently) silently ignored.
 */
 void /* PRIVATE */
-png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
+png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
+   length)
 {
   png_uint_32 skip=0;
   png_check_chunk_name(png_ptr, png_ptr->chunk_name);
@@ -1391,7 +1395,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 len
      if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
           HANDLE_CHUNK_ALWAYS
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-           && png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
+           && png_ptr->read_user_chunk_fn == NULL
 #endif
         )
 #endif
@@ -1421,7 +1425,7 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 len
       png_crc_read(png_ptr, chunk.data, length);
       chunk.size = length;
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-       if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
+       if(png_ptr->read_user_chunk_fn != NULL)
       {
          /* callback to user unknown chunk handler */
          if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)
--- a/pngread.c
+++ b/pngread.c
@@ -1,7 +1,7 @@

 /* pngread.c - read a PNG file
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -53,6 +53,9 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
   {
      return (png_structp)NULL;
   }
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif

 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
@@ -188,6 +191,10 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
   /* reset all variables to 0 */
   png_memset(png_ptr, 0, sizeof (png_struct));

+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+
 #ifdef PNG_SETJMP_SUPPORTED
   /* restore jump buffer */
   png_memcpy(png_ptr->jmpbuf, tmp_jmp, sizeof (jmp_buf));
@@ -715,7 +722,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row)
 * not called png_set_interlace_handling(), the display_row buffer will
 * be ignored, so pass NULL to it.
 *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.10
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta2
 */

 void PNGAPI
@@ -764,7 +771,7 @@ png_read_rows(png_structp png_ptr, png_bytepp row,
 * only call this function once.  If you desire to have an image for
 * each pass of a interlaced image, use png_read_rows() instead.
 *
- * [*] png_handle_alpha() does not exist yet, as of libpng version 1.0.10
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta2
 */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)
@@ -1052,7 +1059,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 }

 /* free all memory used by the read (old method) */
-void PNGAPI
+void /* PRIVATE */
 png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
@@ -1305,7 +1312,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,

   /* Optional call to gamma correct and add the background to the palette
    * and update info structure.  REQUIRED if you are expecting libpng to
-    * update the palette for you (ie you selected such a transform above).
+    * update the palette for you (i.e., you selected such a transform above).
    */
   png_read_update_info(png_ptr, info_ptr);

@@ -1317,13 +1324,15 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
   if(info_ptr->row_pointers == NULL)
   {
      info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
-                                         info_ptr->height * sizeof(png_bytep));
+         info_ptr->height * 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_malloc(png_ptr,
+      {
+         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);
@@ -1332,7 +1341,7 @@ png_read_png(png_structp png_ptr, png_infop info_ptr,
   /* read rest of file, and get additional chunks in info_ptr - REQUIRED */
   png_read_end(png_ptr, info_ptr);

-   if(transforms == 0 || params == (voidp)NULL)
+   if(transforms == 0 || params == NULL)
      /* quiet compiler warnings */ return;

 }
--- a/pngrio.c
+++ b/pngrio.c
@@ -1,7 +1,7 @@

 /* pngrio.c - functions for data input
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngrtran.c
+++ b/pngrtran.c
@@ -1,7 +1,7 @@

 /* pngrtran.c - transforms the data in a row for PNG readers
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngrutil.c
+++ b/pngrutil.c
@@ -1,7 +1,7 @@

 /* pngrutil.c - utilities to read a PNG file
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -220,7 +220,7 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
                   png_ptr->zbuf_size - png_ptr->zstream.avail_out;
               text = (png_charp)png_malloc(png_ptr, text_size + 1);
               png_memcpy(text + prefix_size, png_ptr->zbuf,
-                          text_size - prefix_size);
+                    text_size - prefix_size);
               png_memcpy(text, chunkdata, prefix_size);
               *(text + text_size) = 0x00;
            }
@@ -396,6 +396,13 @@ png_handle_PLTE(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   png_ptr->mode |= PNG_HAVE_PLTE;

+   if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
+   {
+      png_warning(png_ptr,
+        "Ignoring PLTE chunk in grayscale PNG");
+      png_crc_finish(png_ptr, length);
+      return;
+   }
 #if !defined(PNG_READ_OPT_PLTE_SUPPORTED)
   if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
   {
@@ -512,9 +519,7 @@ png_handle_IEND(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   {
      png_error(png_ptr, "No image in file");

-      /* to quiet compiler warnings about unused info_ptr */
-      if (info_ptr == NULL)
-         return;
+      info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */
   }

   png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
@@ -1080,7 +1085,7 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)

   chunkdata = (png_bytep)png_malloc(png_ptr, length + 1);
   slength = (png_size_t)length;
-   png_crc_read(png_ptr, chunkdata, slength);
+   png_crc_read(png_ptr, (png_bytep)chunkdata, slength);

   if (png_crc_finish(png_ptr, skip))
   {
@@ -1110,7 +1115,8 @@ png_handle_sPLT(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   if (data_length % entry_size)
   {
      png_free(png_ptr, chunkdata);
-      png_error(png_ptr, "sPLT chunk has bad length");
+      png_warning(png_ptr, "sPLT chunk has bad length");
+      return;
   }

   new_palette.nentries = data_length / entry_size;
@@ -1859,7 +1865,7 @@ png_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 #endif

   chunkdata = (png_charp)png_malloc(png_ptr, length + 1);
-   slength = (png_size_t)length;
+     slength = (png_size_t)length;
   png_crc_read(png_ptr, (png_bytep)chunkdata, slength);
   if (png_crc_finish(png_ptr, 0))
   {
@@ -2033,7 +2039,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
      if(png_handle_as_unknown(png_ptr, png_ptr->chunk_name) !=
           HANDLE_CHUNK_ALWAYS
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-           && png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
+           && png_ptr->read_user_chunk_fn == NULL
 #endif
        )
 #endif
@@ -2055,10 +2061,10 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
 #endif
       png_strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
       chunk.data = (png_bytep)png_malloc(png_ptr, length);
-       png_crc_read(png_ptr, chunk.data, length);
-       chunk.size = length;
+       chunk.size = (png_size_t)length;
+       png_crc_read(png_ptr, (png_bytep)chunk.data, length);
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-       if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
+       if(png_ptr->read_user_chunk_fn != NULL)
       {
          /* callback to user unknown chunk handler */
          if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)
@@ -2082,8 +2088,7 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
   png_crc_finish(png_ptr, skip);

 #if !defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-   if (info_ptr == NULL)
-     /* quiet compiler warnings about unused info_ptr */ ;
+   info_ptr = info_ptr; /* quiet compiler warnings about unused info_ptr */
 #endif
 }

@@ -2544,9 +2549,7 @@ png_do_read_interlace(png_structp png_ptr)
         (png_uint_32)row_info->pixel_depth + 7) >> 3);
   }
 #if !defined(PNG_READ_PACKSWAP_SUPPORTED)
-   /* silence compiler warning */
-   if (transformations)
-      return;
+   transformations = transformations; /* silence compiler warning */
 #endif
 }
 #endif /* !PNG_HAVE_ASSEMBLER_READ_INTERLACE */
--- a/pngset.c
+++ b/pngset.c
@@ -1,7 +1,7 @@

 /* pngset.c - storage of image information into info struct
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -143,8 +143,11 @@ png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
   if (png_ptr == NULL || info_ptr == NULL)
      return;
   if (info_ptr->num_palette == 0)
+   {
       png_warning(png_ptr,
-		   "Palette size 0, hIST allocation skipped.");
+          "Palette size 0, hIST allocation skipped.");
+       return;
+   }

 #ifdef PNG_FREE_ME_SUPPORTED
   png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
@@ -307,6 +310,7 @@ png_set_pCAL(png_structp png_ptr, png_infop info_ptr,

   info_ptr->pcal_params = (png_charpp)png_malloc(png_ptr,
      (png_uint_32)((nparams + 1) * sizeof(png_charp)));
+
   info_ptr->pcal_params[nparams] = NULL;

   for (i = 0; i < nparams; i++)
@@ -361,7 +365,7 @@ png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,

   length = png_strlen(sheight) + 1;
   png_debug1(3, "allocating unit for info (%d bytes)\n", length);
-   info_ptr->scal_s_width = (png_charp)png_malloc(png_ptr, length);
+   info_ptr->scal_s_height = (png_charp)png_malloc(png_ptr, length);
   png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);

   info_ptr->valid |= PNG_INFO_sCAL;
@@ -531,9 +535,9 @@ png_set_iCCP(png_structp png_ptr, png_infop info_ptr,
   if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
      return;

-   new_iccp_name = png_malloc(png_ptr, png_strlen(name)+1);
+   new_iccp_name = (png_charp)png_malloc(png_ptr, png_strlen(name)+1);
   png_strcpy(new_iccp_name, name);
-   new_iccp_profile = png_malloc(png_ptr, proflen);
+   new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen);
   png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);

   png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
@@ -602,7 +606,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
      png_size_t lang_len,lang_key_len;
      png_textp textp = &(info_ptr->text[info_ptr->num_text]);

-      if (text_ptr[i].key == (png_charp)NULL)
+      if (text_ptr[i].key == NULL)
          continue;

      key_len = png_strlen(text_ptr[i].key);
@@ -616,11 +620,11 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 #ifdef PNG_iTXt_SUPPORTED
      {
        /* set iTXt data */
-        if (text_ptr[i].key != (png_charp)NULL)
+        if (text_ptr[i].key != NULL)
          lang_len = png_strlen(text_ptr[i].lang);
        else
          lang_len = 0;
-        if (text_ptr[i].lang_key != (png_charp)NULL)
+        if (text_ptr[i].lang_key != NULL)
          lang_key_len = png_strlen(text_ptr[i].lang_key);
        else
          lang_key_len = 0;
@@ -632,7 +636,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
      }
 #endif

-      if (text_ptr[i].text == (png_charp)NULL || text_ptr[i].text[0] == '\0')
+      if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
      {
         text_length = 0;
 #ifdef PNG_iTXt_SUPPORTED
@@ -735,7 +739,8 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
 #ifdef PNG_FREE_ME_SUPPORTED
       png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
 #endif
-       png_ptr->trans = info_ptr->trans = png_malloc(png_ptr, num_trans);
+       png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
+           num_trans);
       png_memcpy(info_ptr->trans, trans, num_trans);
 #ifdef PNG_FREE_ME_SUPPORTED
       info_ptr->free_me |= PNG_FREE_TRNS;
@@ -778,12 +783,12 @@ png_set_sPLT(png_structp png_ptr,
        png_sPLT_tp from = entries + i;

        to->name = (png_charp)png_malloc(png_ptr,
-                                        png_strlen(from->name) + 1);
+            png_strlen(from->name) + 1);
        png_strcpy(to->name, from->name);
        to->entries = (png_sPLT_entryp)png_malloc(png_ptr,
-                                 from->nentries * sizeof(png_sPLT_t));
+            from->nentries * sizeof(png_sPLT_t));
        png_memcpy(to->entries, from->entries,
-               from->nentries * sizeof(png_sPLT_t));
+            from->nentries * sizeof(png_sPLT_t));
        to->nentries = from->nentries;
        to->depth = from->depth;
    }
@@ -899,8 +904,8 @@ png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep
    if (chunk_list == NULL)
      return;
    old_num_chunks=png_ptr->num_chunk_list;
-    new_list=png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
-    if(png_ptr->chunk_list != (png_bytep)NULL)
+    new_list=(png_bytep)png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
+    if(png_ptr->chunk_list != NULL)
    {
       png_memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
       png_free(png_ptr, png_ptr->chunk_list);
@@ -952,8 +957,6 @@ png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
       png_free(png_ptr, png_ptr->zbuf);
    png_ptr->zbuf_size = (png_size_t)size;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
-    if(!png_ptr->zbuf)
-       png_error(png_ptr,"Unable to malloc zbuf");
    png_ptr->zstream.next_out = png_ptr->zbuf;
    png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
 }
@@ -965,3 +968,58 @@ png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
      info_ptr->valid &= ~(mask);
 }

+
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+/* this function was added to libpng 1.2.0 and should always exist by default */
+void PNGAPI
+png_set_asm_flags (png_structp png_ptr, png_uint_32 asm_flags)
+{
+    png_uint_32 settable_asm_flags;
+    png_uint_32 settable_mmx_flags;
+
+    settable_mmx_flags =
+#ifdef PNG_HAVE_ASSEMBLER_COMBINE_ROW
+                         PNG_ASM_FLAG_MMX_READ_COMBINE_ROW  |
+#endif
+#ifdef PNG_HAVE_ASSEMBLER_READ_INTERLACE
+                         PNG_ASM_FLAG_MMX_READ_INTERLACE    |
+#endif
+#ifdef PNG_HAVE_ASSEMBLER_READ_FILTER_ROW
+                         PNG_ASM_FLAG_MMX_READ_FILTER_SUB   |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_UP    |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_AVG   |
+                         PNG_ASM_FLAG_MMX_READ_FILTER_PAETH |
+#endif
+                         0;
+
+    /* could be some non-MMX ones in the future, but not currently: */
+    settable_asm_flags = settable_mmx_flags;
+
+    if (!(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_COMPILED) ||
+        !(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU))
+    {
+        /* clear all MMX flags if MMX isn't supported */
+        settable_asm_flags &= ~settable_mmx_flags;
+        png_ptr->asm_flags &= ~settable_mmx_flags;
+    }
+
+    /* we're replacing the settable bits with those passed in by the user,
+     * so first zero them out of the master copy, then logical-OR in the
+     * allowed subset that was requested */
+
+    png_ptr->asm_flags &= ~settable_asm_flags;			/* zero them */
+    png_ptr->asm_flags |= (asm_flags & settable_asm_flags);	/* set them */
+}
+#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
+
+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+/* this function was added to libpng 1.2.0 */
+void PNGAPI
+png_set_mmx_thresholds (png_structp png_ptr,
+                        png_byte mmx_bitdepth_threshold,
+                        png_uint_32 mmx_rowbytes_threshold)
+{
+    png_ptr->mmx_bitdepth_threshold = mmx_bitdepth_threshold;
+    png_ptr->mmx_rowbytes_threshold = mmx_rowbytes_threshold;
+}
+#endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
--- a/pngtest.c
+++ b/pngtest.c
@@ -1,7 +1,7 @@

 /* pngtest.c - a simple test program to test libpng
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -488,14 +488,15 @@ png_debug_malloc(png_structp png_ptr, png_uint_32 size)
   /* This calls the library allocator twice, once to get the requested
      buffer and once to get a new free list entry. */
   {
-      memory_infop pinfo = png_malloc_default(png_ptr, sizeof *pinfo);
+      memory_infop pinfo = (memory_infop)png_malloc_default(png_ptr,
+         sizeof *pinfo);
      pinfo->size = size;
      current_allocation += size;
      total_allocation += size;
      num_allocations ++;
      if (current_allocation > maximum_allocation)
         maximum_allocation = current_allocation;
-      pinfo->pointer = png_malloc_default(png_ptr, size);
+      pinfo->pointer = (png_voidp)png_malloc_default(png_ptr, size);
      pinfo->next = pinformation;
      pinformation = pinfo;
      /* Make sure the caller isn't assuming zeroed memory. */
@@ -1027,18 +1028,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
   row_buf = (png_bytep)png_malloc(read_ptr,
      png_get_rowbytes(read_ptr, read_info_ptr));
   png_debug1(0, "0x%08lx\n\n", (unsigned long)row_buf);
-   if (row_buf == NULL)
-   {
-      fprintf(STDERR, "No memory to allocate row buffer\n");
-      png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL);
-#ifdef PNG_WRITE_SUPPORTED
-      png_destroy_info_struct(write_ptr, &write_end_info_ptr);
-      png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
-      FCLOSE(fpin);
-      FCLOSE(fpout);
-      return (1);
-   }
 #endif /* SINGLE_ROWBUF_ALLOC */
   png_debug(0, "Writing row data\n");

@@ -1522,4 +1511,4 @@ main(int argc, char *argv[])
 }

 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_10 your_png_h_is_not_version_1_0_10;
+typedef version_1_2_0beta2 your_png_h_is_not_version_1_2_0beta2;
--- a/pngtrans.c
+++ b/pngtrans.c
@@ -1,7 +1,7 @@

 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngvcrd.c
+++ b/pngvcrd.c
@@ -2,14 +2,14 @@
 *
 * For Intel x86 CPU and Microsoft Visual C++ compiler
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * Copyright (c) 1998, Intel Corporation
 *
 * Contributed by Nirav Chhatrapati, Intel Corporation, 1998
 * Interface to libpng contributed by Gilles Vollant, 1999
- * Debugging and cleanup by Greg Roelofs, 2000, 2001
+ *
 *
 * In png_do_read_interlace() in libpng versions 1.0.3a through 1.0.4d,
 * a sign error in the post-MMX cleanup code for each pixel_depth resulted
@@ -19,6 +19,8 @@
 *
 * [png_read_filter_row_mmx_avg() bpp == 2 bugfix, GRR 20000916]
 *
+ * [runtime MMX configuration, GRR 20010102]
+ *
 */

 #define PNG_INTERNAL
@@ -110,6 +112,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
   png_debug(1,"in png_combine_row_asm\n");

   if (mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }

@@ -300,7 +304,8 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)

            __int64 mask0=0x0102040810204080;

-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && mmx_supported */ )
            {
               srcptr = png_ptr->row_buf + 1;
               dstptr = row;
@@ -382,8 +387,6 @@ end8:
               incr1 = (disp)*pixel_bytes;
               for (i = initial_val; i < final_val; i += incr1)
               {
-                  if (pixel_bytes > (png_size_t)(final_val-i))
-                    pixel_bytes = (png_size_t)(final_val-i);
                  png_memcpy(dstptr, srcptr, pixel_bytes);
                  srcptr += incr1;
                  dstptr += incr1;
@@ -402,7 +405,8 @@ end8:
            __int64 mask1=0x0101020204040808,
                    mask0=0x1010202040408080;

-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && mmx_supported */ )
            {
               srcptr = png_ptr->row_buf + 1;
               dstptr = row;
@@ -495,8 +499,6 @@ end16:
               incr1 = (disp)*pixel_bytes;
               for (i = initial_val; i < final_val; i += incr1)
               {
-                  if (pixel_bytes > (png_size_t)(final_val-i))
-                    pixel_bytes = (png_size_t)(final_val-i);
                  png_memcpy(dstptr, srcptr, pixel_bytes);
                  srcptr += incr1;
                  dstptr += incr1;
@@ -524,7 +526,8 @@ end16:
            len     = (png_ptr->width)&~7;
            diff = (png_ptr->width)&7;

-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && mmx_supported */ )
            {
               _asm
               {
@@ -627,8 +630,6 @@ end24:
               incr1 = (disp)*pixel_bytes;
               for (i = initial_val; i < final_val; i += incr1)
               {
-                  if (pixel_bytes > (png_size_t)(final_val-i))
-                    pixel_bytes = (png_size_t)(final_val-i);
                  png_memcpy(dstptr, srcptr, pixel_bytes);
                  srcptr += incr1;
                  dstptr += incr1;
@@ -657,7 +658,8 @@ end24:
            len     = (png_ptr->width)&~7;
            diff = (png_ptr->width)&7;

-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && mmx_supported */ )
            {
               _asm
               {
@@ -768,8 +770,6 @@ end32:
               incr1 = (disp)*pixel_bytes;
               for (i = initial_val; i < final_val; i += incr1)
               {
-                  if (pixel_bytes > (png_size_t)(final_val-i))
-                    pixel_bytes = (png_size_t)(final_val-i);
                  png_memcpy(dstptr, srcptr, pixel_bytes);
                  srcptr += incr1;
                  dstptr += incr1;
@@ -793,7 +793,8 @@ end32:
                    mask1=0x2020202040404040,
                    mask0=0x4040808080808080;

-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_COMBINE_ROW)
+                /* && mmx_supported */ )
            {
               srcptr = png_ptr->row_buf + 1;
               dstptr = row;
@@ -927,8 +928,6 @@ end48:
               incr1 = (disp)*pixel_bytes;
               for (i = initial_val; i < final_val; i += incr1)
               {
-                  if (pixel_bytes > (png_size_t)(final_val-i))
-                    pixel_bytes = (png_size_t)(final_val-i);
                  png_memcpy(dstptr, srcptr, pixel_bytes);
                  srcptr += incr1;
                  dstptr += incr1;
@@ -957,8 +956,6 @@ end48:
            incr1 = (disp)*pixel_bytes;
            for (i = initial_val; i < final_val; i += incr1)
            {
-               if (pixel_bytes > (png_size_t)(final_val-i))
-                 pixel_bytes = (png_size_t)(final_val-i);
               png_memcpy(dp, sptr, pixel_bytes);
               sptr += incr1;
               dp += incr1;
@@ -987,6 +984,8 @@ png_do_read_interlace(png_structp png_ptr)
   png_debug(1,"in png_do_read_interlace\n");

   if (mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }

@@ -1187,7 +1186,8 @@ png_do_read_interlace(png_structp png_ptr)
            // NOTE:  there is NO MMX code for 48-bit and 64-bit images

            // use MMX routine if machine supports it
-            if ( mmx_supported )
+            if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_INTERLACE)
+                /* && mmx_supported */ )
            {
               if (pixel_bytes == 3)
               {
@@ -1777,7 +1777,7 @@ loop4_pass4:
            } /* end of mmx_supported */

            else /* MMX not supported:  use modified C code - takes advantage
-                  * of inlining of png_memcpy for a constant */
+                  * of inlining of memcpy for a constant */
            {
               if (pixel_bytes == 1)
               {
@@ -3649,6 +3649,8 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
 #endif

   if (mmx_supported == 2) {
+       /* this should have happened in png_init_mmx_flags() already */
+       png_warning(png_ptr, "asm_flags may not have been initialized");
       png_mmx_support();
   }

@@ -3658,13 +3660,17 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
   {
      case 0: sprintf(filnm, "none");
         break;
-      case 1: sprintf(filnm, "sub-%s", "MMX");
+      case 1: sprintf(filnm, "sub-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" : "x86");
         break;
-      case 2: sprintf(filnm, "up-%s", "MMX");
+      case 2: sprintf(filnm, "up-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" : "x86");
         break;
-      case 3: sprintf(filnm, "avg-%s", "MMX");
+      case 3: sprintf(filnm, "avg-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" : "x86");
         break;
-      case 4: sprintf(filnm, "Paeth-%s", "MMX");
+      case 4: sprintf(filnm, "Paeth-%s",
+        (png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":"x86");
         break;
      default: sprintf(filnm, "unknw");
         break;
@@ -3682,9 +3688,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep

      case PNG_FILTER_VALUE_SUB:
      {
-         if (
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_sub(row_info, row);
         }
@@ -3707,9 +3713,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep

      case PNG_FILTER_VALUE_UP:
      {
-         if (
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_up(row_info, row, prev_row);
         }
@@ -3731,9 +3737,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep

      case PNG_FILTER_VALUE_AVG:
      {
-         if (
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_avg(row_info, row, prev_row);
         }
@@ -3765,9 +3771,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep

      case PNG_FILTER_VALUE_PAETH:
      {
-         if (
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
         {
            png_read_filter_row_mmx_paeth(row_info, row, prev_row);
         }
--- a/pngwio.c
+++ b/pngwio.c
@@ -1,7 +1,7 @@

 /* pngwio.c - functions for data output
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngwrite.c
+++ b/pngwrite.c
@@ -1,7 +1,7 @@

 /* pngwrite.c - general routines to write a PNG file
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -452,6 +452,10 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
      return ((png_structp)NULL);
   }

+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+
 #ifdef PNG_SETJMP_SUPPORTED
 #ifdef USE_FAR_KEYWORD
   if (setjmp(jmpbuf))
@@ -572,6 +576,10 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
   /* reset all variables to 0 */
   png_memset(png_ptr, 0, sizeof (png_struct));

+#ifdef PNG_ASSEMBLER_CODE_SUPPORTED
+   png_init_mmx_flags(png_ptr);   /* 1.2.0 addition */
+#endif
+
 #ifdef PNG_SETJMP_SUPPORTED
   /* restore jump buffer */
   png_memcpy(png_ptr->jmpbuf, tmp_jmp, sizeof (jmp_buf));
@@ -925,7 +933,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)


 /* Free any memory used in png_ptr struct (old method) */
-void PNGAPI
+void /* PRIVATE */
 png_write_destroy(png_structp png_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
@@ -1138,12 +1146,11 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,

      if (png_ptr->filter_weights == NULL)
      {
-         png_ptr->filter_weights = (png_uint_16p) png_malloc(png_ptr,
+         png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr,
            (png_uint_32)(sizeof(png_uint_16) * num_weights));

-         png_ptr->inv_filter_weights = (png_uint_16p) png_malloc(png_ptr,
+         png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr,
            (png_uint_32)(sizeof(png_uint_16) * num_weights));
-
         for (i = 0; i < num_weights; i++)
         {
            png_ptr->inv_filter_weights[i] =
@@ -1173,10 +1180,10 @@ png_set_filter_heuristics(png_structp png_ptr, int heuristic_method,
    */
   if (png_ptr->filter_costs == NULL)
   {
-      png_ptr->filter_costs = (png_uint_16p) png_malloc(png_ptr,
+      png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
         (png_uint_32)(sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));

-      png_ptr->inv_filter_costs = (png_uint_16p) png_malloc(png_ptr,
+      png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
         (png_uint_32)(sizeof(png_uint_16) * PNG_FILTER_VALUE_LAST));

      for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
@@ -1360,7 +1367,7 @@ png_write_png(png_structp png_ptr, png_infop info_ptr,
   /* It is REQUIRED to call this to finish writing the rest of the file */
   png_write_end(png_ptr, info_ptr);

-   if(transforms == 0 || params == (voidp)NULL)
+   if(transforms == 0 || params == NULL)
      /* quiet compiler warnings */ return;
 }
 #endif
--- a/pngwtran.c
+++ b/pngwtran.c
@@ -1,7 +1,7 @@

 /* pngwtran.c - transforms the data in a row for PNG writers
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
--- a/pngwutil.c
+++ b/pngwutil.c
@@ -1,7 +1,7 @@

 /* pngwutil.c - utilities to write a PNG file
 *
- * libpng 1.0.10 - March 30, 2001
+ * libpng 1.2.0beta2 - May 7, 2001
 * For conditions of distribution and use, see copyright notice in png.h
 * Copyright (c) 1998-2001 Glenn Randers-Pehrson
 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@@ -235,8 +235,8 @@ png_text_compress(png_structp png_ptr,
               old_ptr = comp->output_ptr;
               comp->output_ptr = (png_charpp)png_malloc(png_ptr,
                  (png_uint_32)(comp->max_output_ptr * sizeof (png_charpp)));
-               png_memcpy(comp->output_ptr, old_ptr,
-           old_max * sizeof (png_charp));
+               png_memcpy(comp->output_ptr, old_ptr, old_max
+                  * sizeof (png_charp));
               png_free(png_ptr, old_ptr);
            }
            else
@@ -285,7 +285,7 @@ png_text_compress(png_structp png_ptr,
                  comp->output_ptr = (png_charpp)png_malloc(png_ptr,
                     (png_uint_32)(comp->max_output_ptr * sizeof (png_charpp)));
                  png_memcpy(comp->output_ptr, old_ptr,
-              old_max * sizeof (png_charp));
+                     old_max * sizeof (png_charp));
                  png_free(png_ptr, old_ptr);
               }
               else
@@ -435,7 +435,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
 #if defined(PNG_MNG_FEATURES_SUPPORTED)
      !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
      ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
-      (color_type == PNG_COLOR_TYPE_RGB || 
+      (color_type == PNG_COLOR_TYPE_RGB ||
       color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
      (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
 #endif
@@ -535,21 +535,27 @@ png_write_PLTE(png_structp png_ptr, png_colorp palette, png_uint_32 num_pal)

   png_debug(1, "in png_write_PLTE\n");
   if ((
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
-    defined (PNG_WRITE_EMPTY_PLTE_SUPPORTED)
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
        !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
 #endif
        num_pal == 0) || num_pal > 256)
+   {
+     if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
     {
-       if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-         {
-           png_error(png_ptr, "Invalid number of colors in palette");
-         }
-       else
-         {
-           png_warning(png_ptr, "Invalid number of colors in palette");
-           return;
-         }
+        png_error(png_ptr, "Invalid number of colors in palette");
+     }
+     else
+     {
+        png_warning(png_ptr, "Invalid number of colors in palette");
+        return;
+     }
+   }
+
+   if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
+   {
+      png_warning(png_ptr,
+        "Ignoring request to write a PLTE chunk in grayscale PNG");
+      return;
   }

   png_ptr->num_palette = (png_uint_16)num_pal;
@@ -730,7 +736,7 @@ png_write_sPLT(png_structp png_ptr, png_sPLT_tp spalette)
   }

   /* make sure we include the NULL after the name */
-   png_write_chunk_start(png_ptr, (png_bytep) png_sPLT,
+   png_write_chunk_start(png_ptr, (png_bytep)png_sPLT,
          (png_uint_32)(name_len + 2 + palette_size));
   png_write_chunk_data(png_ptr, (png_bytep)new_name, name_len + 1);
   png_write_chunk_data(png_ptr, (png_bytep)&spalette->depth, 1);
@@ -1019,8 +1025,7 @@ png_write_bKGD(png_structp png_ptr, png_color_16p back, int color_type)
   if (color_type == PNG_COLOR_TYPE_PALETTE)
   {
      if (
-#if defined(PNG_MNG_FEATURES_SUPPORTED) || \
-    defined (PNG_WRITE_EMPTY_PLTE_SUPPORTED)
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
          (png_ptr->num_palette ||
          (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
 #endif
--- a/projects/msvc/README.txt
+++ b/projects/msvc/README.txt
@@ -1,5 +1,5 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for
-libpng 1.0.10 (March 30, 2001) and zlib
+libpng 1.2.0beta2 (May 7, 2001) and zlib

 Copyright (C) 2000 Simon-Pierre Cadieux
 For conditions of distribution and use, see copyright notice in png.h
@@ -24,12 +24,12 @@ To build:
 This project will build the PNG Development Group's "official" versions of
 libpng and zlib libraries:

-   libpng1.dll          (default version, currently C code only)
-   libpng1.dll         (C + Assembler version)
-   libpng1.dll         (C + Assembler debug version)
-   libpng1.dll         (C code debug version)
-   libpng1[c,e-m].dll   (reserved for official versions) 
-   libpng1[n-z].dll     (available for private versions)
+   libpng2.dll          (default version, currently C code only)
+   libpng2.dll         (C + Assembler version)
+   libpng2.dll         (C + Assembler debug version)
+   libpng2.dll         (C code debug version)
+   libpng2[c,e-m].dll   (reserved for official versions) 
+   libpng2[n-z].dll     (available for private versions)
   zlib.dll             (default version, currently C code only)
   zlibd.dll            (debug version)

--- a/projects/msvc/libpng.dsp
+++ b/projects/msvc/libpng.dsp
@@ -56,7 +56,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 /nologo /dll /machine:I386 /out:".\win32\libpng\dll\libpng1.dll"
+# ADD LINK32 /nologo /dll /machine:I386 /out:".\win32\libpng\dll\libpng2.dll"
 # SUBTRACT LINK32 /pdb:none

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug"
@@ -84,7 +84,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 /nologo /dll /debug /machine:I386 /out:".\win32\libpng\dll_dbg\libpng1d.dll"
+# ADD LINK32 /nologo /dll /debug /machine:I386 /out:".\win32\libpng\dll_dbg\libpng2d.dll"

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

@@ -111,7 +111,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /machine:I386
-# ADD LINK32 /nologo /dll /machine:I386 /out:".\win32\libpng\dll_asm\libpng1a.dll"
+# ADD LINK32 /nologo /dll /machine:I386 /out:".\win32\libpng\dll_asm\libpng2a.dll"
 # SUBTRACT LINK32 /pdb:none

 !ELSEIF  "$(CFG)" == "libpng - Win32 DLL Debug ASM"
@@ -139,7 +139,7 @@ BSC32=bscmake.exe
 # ADD BSC32 /nologo
 LINK32=link.exe
 # ADD BASE LINK32 /nologo /dll /debug /machine:I386 /pdbtype:sept
-# ADD LINK32 /nologo /dll /debug /machine:I386 /out:".\win32\libpng\dll_dbga\libpng1b.dll"
+# ADD LINK32 /nologo /dll /debug /machine:I386 /out:".\win32\libpng\dll_dbga\libpng2b.dll"

 !ELSEIF  "$(CFG)" == "libpng - Win32 LIB"

--- a/projects/msvc/png32ms.def
+++ b/projects/msvc/png32ms.def
@@ -6,7 +6,7 @@ LIBRARY
 DESCRIPTION "PNG image compression library for Windows"

 EXPORTS
-;Version 1.0.10
+;Version 1.2.0beta2
  png_build_grayscale_palette  @1
  png_check_sig        @2
  png_chunk_error      @3
@@ -77,12 +77,14 @@ EXPORTS
  png_malloc    @68
  png_memcpy_check    @69
  png_memset_check    @70
+; png_permit_empty_plte is deprecated
  png_permit_empty_plte  @71
  png_process_data    @72
  png_progressive_combine_row  @73
  png_read_end    @74
  png_read_image    @75
  png_read_info    @76
+; png_read_init is deprecated
  png_read_init    @77
  png_read_png    @78
  png_read_row    @79
@@ -168,6 +170,7 @@ EXPORTS
  png_write_image    @159
  png_write_info    @160
  png_write_info_before_PLTE  @161
+; png_write_init is deprecated
  png_write_init    @162
  png_write_png    @163
  png_write_row    @164
@@ -180,7 +183,14 @@ EXPORTS
  png_init_io    @171
  png_convert_to_rfc1123     @172
  png_set_invalid  @173
-;To be added at version 1.2.0
-; png_permit_mng_features  @174
-;To be added at version 1.2.0
-; png_mmx_support  @175
+; Added at version 1.2.0
+  png_permit_mng_features  @174
+  png_mmx_support  @175
+  png_get_mmx_flagmask  @176
+  png_get_asm_flagmask  @177
+  png_get_asm_flags  @178
+  png_get_mmx_bitdepth_threshold  @179
+  png_get_mmx_rowbytes_threshold  @180
+  png_set_asm_flags  @181
+  png_init_mmx_flags  @182
+  png_set_strip_error_numbers @183
--- a/projects/wince/READMEE.WCE
+++ b/projects/wince/READMEE.WCE
@@ -8,9 +8,9 @@ libpng for WindowsCE Rel.1.0

 Introduction
 ============
-This is libpng 1.0.10 ported to WindowsCE 2.0 and 2.11.
-libpng 1.0.10 is a PNG reference library.
-See README, a document of original libpng 1.0.10.
+This is libpng 1.2.0beta2 ported to WindowsCE 2.0 and 2.11.
+libpng 1.2.0beta2 is a PNG reference library.
+See README, a document of original libpng 1.2.0beta2.

 zlib for WindowsCE
 ==================
@@ -23,7 +23,7 @@ This software is provided 'as-is', without any express or implied
 warranty.  In no event will the authors be held liable for any damages
 arising from the use of this software.

-See README and LICENSE, documents of original libpng 1.0.10, for conditions
+See README and LICENSE, documents of original libpng 1.2.0beta2, for conditions
 of use and distribution.

 Files
--- a/projects/wince/READMEJ.WCE
+++ b/projects/wince/READMEJ.WCE
@@ -24,7 +24,7 @@ libpng
 <EFBFBD>ɂȂ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ȃ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Q<EFBFBD>ɂ<EFBFBD><EFBFBD>Ă<EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD>ҁA<EFBFBD>z<EFBFBD>z<EFBFBD>ҁA<EFBFBD><EFBFBD><EFBFBD>̑<EFBFBD><EFBFBD><EFBFBD><EFBFBD>p<EFBFBD>҈ȊO<EFBFBD>̐l<EFBFBD><EFBFBD><EFBFBD>A
 <EFBFBD>c<EFBFBD>̂ɐӔC<EFBFBD><EFBFBD><EFBFBD>Ƃ<EFBFBD><EFBFBD>`<60><><EFBFBD>͂Ȃ<CD82><C882><EFBFBD><EFBFBD>̂Ƃ<CC82><C682>܂<EFBFBD><DC82>B

-<EFBFBD><EFBFBD><EFBFBD>̑<EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD>̃\<5C>t<EFBFBD>g<EFBFBD>E<EFBFBD>F<EFBFBD>A<EFBFBD>̗<EFBFBD><CC97>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD>ɂ<C982><C282>ẮA<CD81><41><EFBFBD>łł<C582><C582><EFBFBD> libpng 1.0.10<EFBFBD><EFBFBD>
+<EFBFBD><EFBFBD><EFBFBD>̑<EFBFBD><EFBFBD>A<EFBFBD><EFBFBD><EFBFBD>̃\<5C>t<EFBFBD>g<EFBFBD>E<EFBFBD>F<EFBFBD>A<EFBFBD>̗<EFBFBD><CC97>p<EFBFBD><70><EFBFBD><EFBFBD><EFBFBD>ɂ<C982><C282>ẮA<CD81><41><EFBFBD>łł<C582><C582><EFBFBD> libpng 1.2.0beta2<EFBFBD><EFBFBD>
 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̂Ƃ<EFBFBD><EFBFBD>܂<EFBFBD><EFBFBD>B<EFBFBD>ڂ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>́A<EFBFBD>t<EFBFBD><EFBFBD><EFBFBD><EFBFBD> README,LICENSE <20><><EFBFBD><EFBFBD><EFBFBD>ǂ݂<C782><DD82><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>B

 <EFBFBD><EFBFBD><EFBFBD>^<5E><><EFBFBD>e
--- a/projects/wince/png32ce.def
+++ b/projects/wince/png32ce.def
@@ -5,7 +5,7 @@
 LIBRARY lpngce

 EXPORTS
-;Version 1.0.10
+;Version 1.2.0beta2
  png_build_grayscale_palette  @1
  png_check_sig        @2
  png_chunk_error      @3
@@ -82,6 +82,7 @@ EXPORTS
  png_read_end    @74
  png_read_image    @75
  png_read_info    @76
+; png_read_init is deprecated
  png_read_init    @77
  png_read_png    @78
  png_read_row    @79
@@ -167,6 +168,7 @@ EXPORTS
  png_write_image    @159
  png_write_info    @160
  png_write_info_before_PLTE  @161
+; png_write_init is deprecated
  png_write_init    @162
  png_write_png    @163
  png_write_row    @164
@@ -179,7 +181,14 @@ EXPORTS
  png_init_io    @171
  png_convert_to_rfc1123     @172
  png_set_invalid  @173
-;To be added at version 1.2.0
-; png_permit_mng_features  @174
-;To be added at version 1.2.0
-; png_mmx_support  @175
+; Added at version 1.2.0
+  png_permit_mng_features  @174
+  png_mmx_support  @175
+  png_get_mmx_flagmask  @176
+  png_get_asm_flagmask  @177
+  png_get_asm_flags  @178
+  png_get_mmx_bitdepth_threshold  @179
+  png_get_mmx_rowbytes_threshold  @180
+  png_set_asm_flags  @181
+  png_init_mmx_flags  @182
+  png_set_strip_error_numbers @183
--- a/scripts/makefile.aix
+++ b/scripts/makefile.aix
@@ -18,7 +18,7 @@ RM = rm -f
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 prefix=/usr/local
--- a/scripts/makefile.beos
+++ b/scripts/makefile.beos
@@ -13,7 +13,7 @@ ZLIBINC=/usr/local/include
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 ALIGN=
--- a/scripts/makefile.cygwin
+++ b/scripts/makefile.cygwin
@@ -38,10 +38,10 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-#PNGDLL = $1# msvc
-PNGDLL = 2# cygwin 1.0.10
-PNGMIN = 1.0.10
-PNGMIN_BASE = 1.0.10
+#PNGDLL = $2# msvc
+PNGDLL = 2# cygwin 1.2.0beta2
+PNGMIN = 1.2.0beta2
+PNGMIN_BASE = 1.2.0
 PNGVER = $(PNGMAJ).$(PNGMIN)

 SHAREDLIB=cygpng$(PNGDLL).dll
@@ -108,7 +108,8 @@ $(STATLIB): $(OBJS)
 	$(RANLIB) $@

 $(SHAREDDEF): projects/msvc/png32ms.def
-	cat $< | sed -e '1{G;s/^\(.*\)\(\n\)/EXPORTS/;};2,/^EXPORTS/d' > $@
+	cat $< | sed -e '1{G;s/^\(.*\)\(\n\)/EXPORTS/;};2,/^EXPORTS/d' | \
+	sed -e 's/\([^;]*\);/;/' > $@

 $(SHAREDLIB): $(OBJSDLL) $(SHAREDDEF)
 	$(LDSHARED) -o $@ $(LDEXTRA) $(OBJSDLL) -L. -L$(ZLIBLIB) -lz
--- a/scripts/makefile.dec
+++ b/scripts/makefile.dec
@@ -17,7 +17,7 @@ ZLIBINC=../zlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 CC=cc
--- a/scripts/makefile.gcmmx
+++ b/scripts/makefile.gcmmx
@@ -51,7 +51,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 INCPATH=$(prefix)/include
--- a/scripts/makefile.hpgcc
+++ b/scripts/makefile.hpgcc
@@ -34,7 +34,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 INCPATH=$(prefix)/include
--- a/scripts/makefile.hpux
+++ b/scripts/makefile.hpux
@@ -19,7 +19,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 # where make install puts libpng.a and png.h
--- a/scripts/makefile.linux
+++ b/scripts/makefile.linux
@@ -34,7 +34,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 INCPATH=$(prefix)/include
--- a/scripts/makefile.netbsd
+++ b/scripts/makefile.netbsd
@@ -0,0 +1,42 @@
+# makefile for libpng for NetBSD for the standard
+# make obj && make depend && make && make test
+# make includes && make install
+# Copyright (C) 2001 Patrick R.L. Welche
+# For conditions of distribution and use, see copyright notice in png.h
+
+LOCALBASE?=/usr/local
+LIBDIR=	${LOCALBASE}/lib
+MANDIR= ${LOCALBASE}/man
+INCSDIR=${LOCALBASE}/include
+
+LIB=png
+SHLIB_MAJOR= 2
+SHLIB_MINOR= 1.2.0beta2
+SRCS=	pnggccrd.c png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
+	pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
+	pngwtran.c pngmem.c pngerror.c pngpread.c
+INCS=	png.h pngconf.h
+MAN=	libpng.3 libpngpf.3 png.5
+
+CPPFLAGS+=-I${.CURDIR} -DPNG_USE_PNGGCCRD
+
+CPPFLAGS+=-DPNG_NO_ASSEMBLER_CODE
+# something like this for mmx assembler, but it core dumps for me at the moment
+# .if ${MACHINE_ARCH} == "i386"
+#   MKLINT= no
+# .else
+#   CPPFLAGS+=-DPNG_NO_ASSEMBLER_CODE
+# .endif
+
+CLEANFILES+=pngtest.o pngtest
+
+pngtest.o:	pngtest.c
+	${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
+
+pngtest:	pngtest.o libpng.a
+	${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
+
+test:	pngtest
+	cd ${.CURDIR} && ${.OBJDIR}/pngtest
+
+.include <bsd.lib.mk>
--- a/scripts/makefile.sco
+++ b/scripts/makefile.sco
@@ -25,7 +25,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 INCPATH=$(prefix)/include
--- a/scripts/makefile.sggcc
+++ b/scripts/makefile.sggcc
@@ -19,8 +19,8 @@ CFLAGS=-I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=gcc -shared

-VER=1.0.10
-LIBS=libpng.so.1.0.10
+VER=1.2.0beta2
+LIBS=libpng.so.1.2.0beta2
 SHAREDLIB=libpng.so
 libdir=$(prefix)/lib32

--- a/scripts/makefile.sgi
+++ b/scripts/makefile.sgi
@@ -25,7 +25,7 @@ CFLAGS=-I$(ZLIBINC) -O $(WARNMORE) -DPNG_USE_PNGGCCRD -DPNG_NO_ASSEMBLER_CODE
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc -shared

-VER=1.0.10
+VER=1.2.0beta2
 SONUM=2
 SHAREDLIB=libpng.so
 libdir=$(prefix)
--- a/scripts/makefile.solaris
+++ b/scripts/makefile.solaris
@@ -31,7 +31,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 2.  You should not
 # have to change it.
 PNGMAJ = 2
-PNGMIN = 1.0.10
+PNGMIN = 1.2.0beta2
 PNGVER = $(PNGMAJ).$(PNGMIN)

 INCPATH=$(prefix)/include
--- a/scripts/pngdef.pas
+++ b/scripts/pngdef.pas
@@ -1,12 +1,14 @@
 unit pngdef;

-// Caution: this file is probably out of date.
+// Caution: this file has fallen out of date since version 1.0.5.  Write to
+// png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu about bringing
+// it up to date.

 interface

 const
-  PNG_LIBPNG_VER_STRING = '1.0.10';
-  PNG_LIBPNG_VER        =  10010;
+  PNG_LIBPNG_VER_STRING = '1.2.0beta2';
+  PNG_LIBPNG_VER        =  10200;

 type
  png_uint_32 = Cardinal;
--- a/scripts/pngos2.def
+++ b/scripts/pngos2.def
@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------

-; Caution: This file is probably out of date.
+; Version 1.2.0beta2

 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -10,284 +10,196 @@ CODE		PRELOAD MOVEABLE DISCARDABLE
 DATA		PRELOAD MOVEABLE MULTIPLE

 EXPORTS
-  png_set_sig_bytes
-  png_sig_cmp
+
+
+  png_build_grayscale_palette
  png_check_sig
-  png_create_read_struct
-; png_create_read_struct_2
-  png_create_write_struct
-; png_create_write_struct_2
-  png_write_chunk
-  png_write_chunk_start
-  png_write_chunk_data
-  png_write_chunk_end
-  png_create_info_struct
-  png_info_init
-  png_write_info
-  png_write_info_before_PLTE
-  png_read_info
-  png_convert_to_rfc1123
+  png_chunk_error
+  png_chunk_warning
  png_convert_from_struct_tm
  png_convert_from_time_t
-  png_set_expand
+  png_create_info_struct
+  png_create_read_struct
+  png_create_write_struct
+  png_data_freer
+  png_destroy_info_struct
+  png_destroy_read_struct
+  png_destroy_write_struct
+  png_error
+  png_free
+  png_free_data
+  png_get_IHDR
+  png_get_PLTE
+  png_get_bKGD
+  png_get_bit_depth
+  png_get_cHRM
+  png_get_cHRM_fixed
+  png_get_channels
+  png_get_color_type
+  png_get_compression_buffer_size
+  png_get_compression_type
+  png_get_copyright
+  png_get_error_ptr
+  png_get_filter_type
+  png_get_gAMA
+  png_get_gAMA_fixed
+  png_get_hIST
+  png_get_header_ver
+  png_get_header_version
+  png_get_iCCP
+  png_get_image_height
+  png_get_image_width
+  png_get_interlace_type
+  png_get_io_ptr
+  png_get_libpng_ver
+  png_get_oFFs
+  png_get_pCAL
+  png_get_pHYs
+  png_get_pixel_aspect_ratio
+  png_get_pixels_per_meter
+  png_get_progressive_ptr
+  png_get_rgb_to_gray_status
+  png_get_rowbytes
+  png_get_rows
+  png_get_sBIT
+  png_get_sCAL
+  png_get_sPLT
+  png_get_sRGB
+  png_get_signature
+  png_get_tIME
+  png_get_tRNS
+  png_get_text
+  png_get_unknown_chunks
+  png_get_user_chunk_ptr
+  png_get_user_transform_ptr
+  png_get_valid
+  png_get_x_offset_microns
+  png_get_x_offset_pixels
+  png_get_x_pixels_per_meter
+  png_get_y_offset_microns
+  png_get_y_offset_pixels
+  png_get_y_pixels_per_meter
+  png_malloc
+  png_memcpy_check
+  png_memset_check
+  png_permit_empty_plte
+  png_process_data
+  png_progressive_combine_row
+  png_read_end
+  png_read_image
+  png_read_info
+  png_read_init ; deprecated
+  png_read_png
+  png_read_row
+  png_read_rows
+  png_read_update_info
+  png_reset_zstream
+  png_set_IHDR
+  png_set_PLTE
+  png_set_bKGD
+  png_set_background
  png_set_bgr
+  png_set_cHRM
+  png_set_cHRM_fixed
+  png_set_compression_buffer_size
+  png_set_compression_level
+  png_set_compression_mem_level
+  png_set_compression_method
+  png_set_compression_strategy
+  png_set_compression_window_bits
+  png_set_crc_action
+  png_set_dither
+  png_set_error_fn
+  png_set_expand
+  png_set_filler
+  png_set_filter
+  png_set_filter_heuristics
+  png_set_flush
+  png_set_gAMA
+  png_set_gAMA_fixed
+  png_set_gamma
+  png_set_gray_1_2_4_to_8
  png_set_gray_to_rgb
+  png_set_hIST
+  png_set_iCCP
+  png_set_interlace_handling
+  png_set_invert_alpha
+  png_set_invert_mono
+  png_set_keep_unknown_chunks
+  png_set_oFFs
+  png_set_pCAL
+  png_set_pHYs
+  png_set_packing
+  png_set_packswap
+  png_set_palette_to_rgb
+  png_set_progressive_read_fn
+  png_set_read_fn
+  png_set_read_status_fn
+  png_set_read_user_chunk_fn
+  png_set_read_user_transform_fn
  png_set_rgb_to_gray
  png_set_rgb_to_gray_fixed
  png_set_rows
-  png_build_grayscale_palette
-  png_set_strip_alpha
-  png_set_swap_alpha
-  png_set_invalid
-  png_set_invert_alpha
-  png_set_filler
-  png_set_swap
-  png_set_packing
-  png_set_packswap
-  png_set_shift
-  png_set_interlace_handling
-  png_set_invert_mono
-  png_set_background
-  png_set_strip_16
-  png_set_dither
-  png_set_gamma
-  png_set_flush
-  png_set_user_chunk_fn
-  png_write_flush
-  png_start_read_image
-  png_read_update_info
-  png_read_rows
-  png_read_row
-  png_read_image
-  png_write_row
-  png_write_rows
-  png_write_image
-  png_write_end
-  png_read_end
-  png_destroy_info_struct
-  png_destroy_read_struct
-  png_read_destroy
-  png_destroy_write_struct
-; png_write_destroy_info
-  png_write_destroy
-  png_set_crc_action
-  png_set_filter
-  png_set_filter_heuristics
-  png_set_compression_level
-  png_set_compression_mem_level
-  png_set_compression_strategy
-  png_set_compression_window_bits
-  png_set_compression_method
-  png_init_io
-  png_get_copyright
-  png_set_error_fn
-  png_get_error_ptr
-  png_get_header_ver
-  png_get_header_version
-  png_get_libpng_ver
-  png_get_user_chunk_ptr
-; png_get_mem_fn
-; png_set_mem_fn
-  png_set_write_fn
-  png_set_read_fn
-  png_set_write_status_fn
-  png_set_read_status_fn
-  png_get_io_ptr
-  png_set_progressive_read_fn
-  png_set_read_status_fn
-  png_set_read_user_transform_fn
-  png_set_write_status_fn
-  png_set_write_user_transform_fn
-  png_get_progressive_ptr
-  png_process_data
-  png_progressive_combine_row
-  png_malloc
-  png_free
-  png_memcpy_check
-  png_memset_check
-; png_malloc_default
-; png_free_default
-; png_far_to_near
-  png_error
-  png_chunk_error
-  png_warning
-  png_chunk_warning
-  png_get_valid
-  png_get_rowbytes
-  png_get_channels
-  png_get_image_width
-  png_get_image_height
-  png_get_bit_depth
-  png_get_color_type
-  png_get_filter_type
-  png_get_interlace_type
-  png_get_compression_type
-  png_get_pixels_per_meter
-  png_get_pixel_aspect_ratio
-  png_get_rgb_to_gray_status
-  png_get_rows
-  png_get_x_offset_pixels
-  png_get_y_offset_pixels
-  png_get_x_offset_microns
-  png_get_y_offset_microns
-  png_get_signature
-  png_get_bKGD
-  png_set_bKGD
-  png_get_cHRM
-  png_set_cHRM
-  png_set_cHRM_fixed
-  png_get_gAMA
-  png_set_gAMA
-  png_set_gAMA_fixed
-  png_get_hIST
-  png_set_hIST
-  png_get_IHDR
-  png_set_IHDR
-  png_get_oFFs
-  png_set_oFFs
-  png_get_pCAL
-  png_set_pCAL
-  png_get_pHYs
-  png_set_pHYs
-  png_get_PLTE
-  png_set_PLTE
-  png_get_sBIT
  png_set_sBIT
-  png_get_sRGB
+  png_set_sCAL
+  png_set_sPLT
  png_set_sRGB
  png_set_sRGB_gAMA_and_cHRM
-  png_get_text
-  png_set_text
-  png_get_tIME
+  png_set_shift
+  png_set_sig_bytes
+  png_set_strip_16
+  png_set_strip_alpha
+  png_set_swap
+  png_set_swap_alpha
  png_set_tIME
-  png_get_tRNS
  png_set_tRNS
-  png_set_gray_1_2_4_to_8
  png_set_tRNS_to_alpha
-  png_set_palette_to_rgb
+  png_set_text
+  png_set_unknown_chunk_location
+  png_set_unknown_chunks
+  png_set_user_transform_info
+  png_set_write_fn
+  png_set_write_status_fn
+  png_set_write_user_transform_fn
+  png_sig_cmp
+  png_start_read_image
+  png_warning
+  png_write_chunk
+  png_write_chunk_data
+  png_write_chunk_end
+  png_write_chunk_start
+  png_write_end
+  png_write_flush
+  png_write_image
+  png_write_info
+  png_write_info_before_PLTE
+  png_write_init ; deprecated
+  png_write_png
+  png_write_row
+  png_write_rows
+  png_read_init_2
+  png_write_init_2
+  png_access_version_number
+  png_init_io
+  png_convert_to_rfc1123
+  png_set_invalid

-  png_create_struct
-  png_destroy_struct
-  png_info_destroy
-  png_zalloc
-  png_zfree
-  png_reset_crc
-  png_write_data
-  png_read_data
-  png_crc_read
-  png_crc_finish
-  png_crc_error
-  png_calculate_crc
-  png_flush
-  png_save_uint_32
-  png_save_int_32
-  png_save_uint_16
-  png_write_sig
-  png_write_IHDR
-  png_write_PLTE
-  png_write_IDAT
-  png_write_IEND
-  png_write_bKGD
-  png_write_cHRM
-  png_write_gAMA
-  png_write_hIST
-  png_write_iCCP
-  png_write_iTXt
-  png_write_oFFs
-  png_write_pCAL
-  png_write_pHYs
-  png_write_sBIT
-  png_write_sCAL
-  png_write_sPLT
-  png_write_sRGB
-  png_check_keyword
-  png_write_tEXt
-  png_write_tIME
-  png_write_tRNS
-  png_write_zTXt
-  png_write_finish_row
-  png_write_start_row
-  png_build_gamma_table
-  png_combine_row
-  png_do_read_interlace
-  png_do_write_interlace
-  png_read_filter_row
-  png_write_find_filter
-  png_write_filtered_row
-  png_read_finish_row
-  png_read_start_row
-  png_read_transform_info
-  png_do_read_filler
-  png_do_read_swap_alpha
-  png_do_write_swap_alpha
-  png_do_read_invert_alpha
-  png_do_write_invert_alpha
-  png_do_strip_filler
-  png_do_swap
-  png_do_packswap
-  png_do_rgb_to_gray
-  png_do_gray_to_rgb
-  png_do_unpack
-  png_do_unshift
-  png_do_invert
-  png_do_chop
-  png_do_dither
-; png_correct_palette
-  png_do_bgr
-  png_do_pack
-  png_do_shift
-  png_do_background
-  png_do_gamma
-  png_do_expand_palette
-  png_do_expand
-  png_handle_IHDR
-  png_handle_PLTE
-  png_handle_IEND
-  png_handle_bKGD
-  png_handle_cHRM
-  png_handle_gAMA
-  png_handle_hIST
-  png_handle_iCCP
-  png_handle_iTXt
-  png_handle_oFFs
-  png_handle_pCAL
-  png_handle_pHYs
-  png_handle_sBIT
-  png_handle_sCAL
-  png_handle_sPLT
-  png_handle_sRGB
-  png_handle_tEXt
-  png_handle_tIME
-  png_handle_tRNS
-  png_handle_zTXt
-  png_handle_unknown
-  png_check_chunk_name
-  png_do_read_transformations
-  png_do_write_transformations
-  png_init_read_transformations
-  png_push_read_chunk
-  png_push_read_sig
-; png_push_check_crc
-  png_push_crc_skip
-  png_push_crc_finish
-  png_push_fill_buffer
-  png_push_save_buffer
-  png_push_restore_buffer
-  png_push_read_IDAT
-  png_process_IDAT_data
-  png_push_process_row
-  png_push_handle_unknown
-  png_push_have_info
-  png_push_have_end
-  png_push_have_row
-; png_push_read_end
-  png_process_some_data
-  png_read_push_finish_row
-  png_push_handle_tEXt
-  png_push_read_tEXt
-  png_push_handle_zTXt
-  png_push_read_zTXt
+;To be added at version 1.2.0
+; png_permit_mng_features

+; Added at version 1.2.0:
+  png_mmx_support
+  png_permit_empty_plte
+  png_permit_mng_features
+  png_get_mmx_flagmask
+  png_get_asm_flagmask
+  png_get_asm_flags
+  png_get_mmx_bitdepth_threshold
+  png_get_mmx_rowbytes_threshold
+  png_set_asm_flags
+  png_init_mmx_flags
+
+; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
  png_libpng_ver
  png_pass_start
  png_pass_inc
@@ -297,13 +209,8 @@ EXPORTS
  png_pass_dsp_mask
 ; png_pass_width
 ; png_pass_height
-  png_get_iCCP
-  png_get_sCAL
-  png_get_sPLT
-  png_set_iCCP
-  png_set_sPLT
-  png_free_data

+; These are not present when libpng is compiled with PNG_NO_GLOBAL_ARRAYS
  png_IHDR
  png_IDAT
  png_IEND
@@ -325,6 +232,3 @@ EXPORTS
  png_tIME
  png_tRNS
  png_zTXt
-
-  png_mmx_supported
-  png_permit_empty_plte
Author	SHA1	Message	Date
Glenn Randers-Pehrson	3097f618f2	Imported from libpng-1.2.0beta2.tar	2009-04-06 16:06:18 -05:00
Glenn Randers-Pehrson	1fd5fb33c2	Imported from libpng-1.2.0beta1.tar	2009-04-06 16:06:16 -05:00
Glenn Randers-Pehrson	e68f5a361b	Imported from libpng-1.0.12beta1.tar	2009-04-06 16:06:14 -05:00
Glenn Randers-Pehrson	328353990f	Imported from libpng-1.0.11.tar	2009-04-06 16:06:12 -05:00
Glenn Randers-Pehrson	82ae383331	Imported from libpng-1.0.11rc1.tar	2009-04-06 16:06:10 -05:00
Glenn Randers-Pehrson	e1eff58f87	Imported from libpng-1.0.11beta3.tar	2009-04-06 16:06:08 -05:00
Glenn Randers-Pehrson	f64a06f5ec	Imported from libpng-1.0.11beta2.tar	2009-04-06 16:06:06 -05:00
Glenn Randers-Pehrson	87c6bc984a	Imported from libpng-1.0.11beta1.tar	2009-04-06 16:06:04 -05:00