Imported from libpng-1.2.0beta1.tar

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.0.12beta1 - May 14, 2001
+Libpng 1.2.0beta1 - May 6, 2001
 
 This is a public release of libpng, intended for use in production codes.
 
@@ -9,12 +9,10 @@ Changes since the last public release (1.0.11):
   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.
-  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
+  Enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
-  Eliminated the png_error about apps using png_read|write_init().  Instead,
+    by default.
-    libpng will reallocate the png_struct and info_struct if they are too small.
+  Added runtime selection of MMX features.
-    This achieves future binary compatibility for old applications written for
+  Added png_set_strip_error_numbers function and related macros.
-    libpng-0.88 and earlier.
-  Modified png_create_struct so it passes user mem_ptr to user memory allocator.
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

CHANGES

@@ -1,3 +1,4 @@
+
 CHANGES - changes for libpng
 
 version 0.2
@@ -930,17 +931,15 @@ version 1.0.11beta4 [April 20, 2001]
   Added makefile.netbsd
 version 1.0.11 [April 27, 2001]
   Revised makefile.netbsd
-version 1.0.12beta1 [May 14, 2001]
+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.
-  Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
+  Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
-  Eliminated the png_error about apps using png_read|write_init().  Instead,
+    by default.
-    libpng will reallocate the png_struct and info_struct if they are too small.
+  Added runtime selection of MMX features.
-    This achieves future binary compatibility for old applications written for
+  Added png_set_strip_error_numbers function and related macros.
-    libpng-0.88 and earlier.
-  Modified png_create_struct so it passes user mem_ptr to user memory allocator.
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

INSTALL

@@ -1,5 +1,5 @@
 
-Installing libpng version 1.0.12beta1 - May 14, 2001
+Installing libpng version 1.2.0beta1 - May 6, 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-1.0.12beta1" or "lpng109" and "zlib-1.1.3"
+might be called "libpng-1.2.0beta1" 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:
@@ -28,7 +28,6 @@ Your directory structure should look like this:
              pngsuite
              visupng
           projects
-             beos
              borland
              msvc
              wince
@@ -60,8 +59,8 @@ 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.2.1.0.12beta1)
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta1)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.0.12beta1,
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0beta1,
                        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
@@ -70,17 +69,15 @@ include
  makefile.aix      =>  AIX makefile
  makefile.cygwin   =>  Cygwin/gcc makefile
  makefile.dec      =>  DEC Alpha UNIX makefile
- makefile.hpgcc    =>  HPUX makefile using gcc
  makefile.hpux     =>  HPUX (10.20 and 11.00) makefile
  makefile.ibmc     =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
  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.2.1.0.12beta1)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta1)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.0.12beta1)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0beta1)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.mips     =>  MIPS makefile
  makefile.acorn    =>  Acorn makefile

KNOWNBUG

@@ -1,7 +1,8 @@
 
-Known bugs in libpng-1.0.11
+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.
+

LICENSE

@@ -8,8 +8,8 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
 If you modify libpng you may insert additional notices immediately following
 this sentence.
 
-libpng versions 1.0.7, July 1, 2000, through 1.0.12beta1, May 14, 2001, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.0beta1, May 6, 2001, are
-Copyright (c) 2000, 2001 Glenn Randers-Pehrson
+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
+2. Altered versions must be plainly marked as such and must not
-   must not be misrepresented as being the original source.
+   be misrepresented as being the original source.
 
-3. This Copyright notice may not be removed or altered from
+3. This Copyright notice may not be removed or altered from any
-   any source or altered source distribution.
+   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
-May 14, 2001
+May 6, 2001

README

@@ -1,4 +1,4 @@
-README for libpng 1.0.12beta1 - May 14, 2001 (shared library 2.1)
+README for libpng 1.2.0beta1 - May 6, 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.
@@ -172,7 +172,6 @@ Files in this distribution:
        pngsuite     =>  Test images
        visupng      =>  Contains a MSVC workspace for VisualPng
       projects      =>  Contains project files and workspaces for building DLL
-       beos             =>  Contains a Beos workspace for building libpng
        borland          =>  Contains a Borland workspace for building libpng
                             and zlib
        msvc             =>  Contains a Microsoft Visual C++ (MSVC) workspace
@@ -183,9 +182,9 @@ 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.2.1.0.12beta1)
+                            (gcc, creates libpng.so.2.1.2.0beta1)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng.so.2.1.0.12beta1, uses assembler code
+                            libpng.so.2.1.2.0beta1, 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
@@ -194,18 +193,16 @@ Files in this distribution:
        makefile.aix     =>  AIX makefile
        makefile.cygwin  =>  Cygwin/gcc makefile
        makefile.dec     =>  DEC Alpha UNIX makefile
-       makefile.hpgcc   =>  HPUX makefile using gcc
        makefile.hpux    =>  HPUX (10.20 and 11.00) makefile
        makefile.ibmc    =>  IBM C/C++ version 3.x for Win32 and OS/2 (static)
        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.2.1.0.12beta1)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.0beta1)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng.so.2.1.0.12beta1)
+                            (gcc, creates libpng.so.2.1.2.0beta1)
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
        makefile.mips    =>  MIPS makefile
        makefile.acorn   =>  Acorn makefile

Y2KINFO

@@ -1,13 +1,13 @@
    Y2K compliance in libpng:
    =========================
 
-      May 14, 2001
+      May 6, 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 1.0.12beta1 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.0beta1 are Y2K compliant.  It is my belief that earlier
       versions were also Y2K compliant.
 
       Libpng only has three year fields.  One is a 2-byte unsigned integer

configure

@@ -1,5 +1,5 @@
 echo "
-  There is no \"configure\" script for Libpng-1.0.12beta1.  Instead, please
+  There is no \"configure\" script for Libpng-1.2.0beta1.  Instead, please
   copy the appropriate makefile for your system from the \"scripts\"
   directory.  Read the INSTALL file for more details.
 "

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 */
 

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);

example.c

@@ -338,8 +338,7 @@ void read_png(FILE *fp, unsigned int sig_read)  /* file is already open */
 
    for (row = 0; row < height; row++)
    {
-      row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
+      row_pointers[row] = malloc(png_get_rowbytes(png_ptr, info_ptr));
-         info_ptr));
    }
 
    /* Now it's time to read the image.  One of these methods is REQUIRED */
@@ -495,7 +494,7 @@ row_callback(png_structp png_ptr, png_bytep new_row,
  * png_progressive_combine_row() passing in the row and the
  * old row.  You can call this function for NULL rows (it will
  * just return) and for non-interlaced images (it just does the
- * png_memcpy for you) if it will make the code easier.  Thus, you
+ * memcpy for you) if it will make the code easier.  Thus, you
  * can just do this for all cases:
  */
 
@@ -604,8 +603,7 @@ 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
+   palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof (png_color));
-             * 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

libpng.3

@@ -1,6 +1,6 @@
-.TH LIBPNG 3 "May 14, 2001"
+.TH LIBPNG 3 "May 6, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta1
 .SH SYNOPSIS
 \fI\fB
 
@@ -100,6 +100,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
 
 \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 1.0.12beta1
 
 \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 1.0.12beta1
 
 \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 1.0.12beta1
 
 \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 1.0.12beta1
 
 \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 1.0.12beta1
 
 \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
@@ -747,7 +781,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
 .SH LIBPNG.TXT
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.12beta1 - May 14, 2001
+ libpng version 1.2.0beta1 - May 6, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -2143,7 +2177,6 @@ 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)
@@ -3392,8 +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.
@@ -3418,7 +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
@@ -3428,7 +3559,7 @@ of the original PNG Group, Glenn Randers-Pehrson.  Guy and Andreas are
 still alive and well, but they have moved on to other things.
 
 The old libpng functions png_read_init(), png_write_init(),
-png_info_init(), png_read_destroy(), and png_write_destroy() have been
+png_info_init(), png_read_destroy(), and png_write_destory() have been
 moved to PNG_INTERNAL in version 0.95 to discourage their use.  These
 functions will be removed from libpng version 2.0.0.
 
@@ -3467,15 +3598,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-.SH VIII. Y2K Compliance in libpng
+.SH IX. Y2K Compliance in libpng
 
-May 14, 2001
+May 6, 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 1.0.12beta1 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0beta1 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
@@ -3587,7 +3718,8 @@ the first widely used release:
  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
- 1.0.12beta1          1    10012  2.1.0.12beta1
+ 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
@@ -3645,7 +3777,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.0.12beta1 - May 14, 2001:
+Libpng version 1.2.0beta1 - May 6, 2001:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
 
@@ -3662,7 +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  1.0.12beta1, May 14, 2001, are
+libpng versions 1.0.7, July 1, 2000, through  1.2.0beta1, May 6, 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
@@ -3754,7 +3886,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-May 14, 2001
+May 6, 2001
 
 .\" end of man page
 

libpng.txt

@@ -1,6 +1,6 @@
 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.0.12beta1 - May 14, 2001
+ libpng version 1.2.0beta1 - May 6, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -1396,7 +1396,6 @@ 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)
@@ -2645,8 +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.
@@ -2671,7 +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
@@ -2681,7 +2778,7 @@ of the original PNG Group, Glenn Randers-Pehrson.  Guy and Andreas are
 still alive and well, but they have moved on to other things.
 
 The old libpng functions png_read_init(), png_write_init(),
-png_info_init(), png_read_destroy(), and png_write_destroy() have been
+png_info_init(), png_read_destroy(), and png_write_destory() have been
 moved to PNG_INTERNAL in version 0.95 to discourage their use.  These
 functions will be removed from libpng version 2.0.0.
 
@@ -2720,15 +2817,15 @@ application:
 
    png_uint_32 application_vn = PNG_LIBPNG_VER;
 
-VIII. Y2K Compliance in libpng
+IX. Y2K Compliance in libpng
 
-May 14, 2001
+May 6, 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 1.0.12beta1 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.0beta1 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

libpngpf.3

@@ -1,6 +1,6 @@
-.TH LIBPNGPF 3 "May 14, 2001"
+.TH LIBPNGPF 3 "May 6, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0beta1
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP
@@ -283,6 +283,10 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.0.12beta1
 
 \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

png.5

@@ -1,4 +1,4 @@
-.TH PNG 5 "May 14, 2001"
+.TH PNG 5 "May 6, 2001"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

@@ -1,7 +1,7 @@
 
 /* png.c - location for general purpose libpng functions
  *
- * libpng version 1.0.12beta1 - May 14, 2001
+ * libpng version 1.2.0beta1 - May 6, 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_12beta1 Your_png_h_is_not_version_1_0_12beta1;
+typedef version_1_2_0beta1 Your_png_h_is_not_version_1_2_0beta1;
 
 /* 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] = "1.0.12beta1";
+const char png_libpng_ver[18] = "1.2.0beta1";
 
 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -213,12 +213,12 @@ png_create_info_struct(png_structp png_ptr)
    if(png_ptr == NULL) return (NULL);
 #ifdef PNG_USER_MEM_SUPPORTED
    if ((info_ptr = (png_infop)png_create_struct_2(PNG_STRUCT_INFO,
-      png_ptr->malloc_fn, png_ptr->mem_ptr)) != NULL)
+      png_ptr->malloc_fn)) != NULL)
 #else
    if ((info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO)) != NULL)
 #endif
    {
-      png_info_init_3(&info_ptr, sizeof(png_info));
+      png_info_init(info_ptr);
    }
 
    return (info_ptr);
@@ -243,8 +243,7 @@ png_destroy_info_struct(png_structp png_ptr, png_infopp info_ptr_ptr)
       png_info_destroy(png_ptr, info_ptr);
 
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn,
+      png_destroy_struct_2((png_voidp)info_ptr, png_ptr->free_fn);
-          png_ptr->mem_ptr);
 #else
       png_destroy_struct((png_voidp)info_ptr);
 #endif
@@ -256,28 +255,10 @@ 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.
  */
-#undef png_info_init
+void /* PRIVATE */
-void PNGAPI
 png_info_init(png_infop info_ptr)
 {
-   /* We only come here via pre-1.0.12-compiled applications */
+   png_debug(1, "in png_info_init\n");
-   png_info_init_3(&info_ptr, 0);
-}
-
-void PNGAPI
-png_info_init_3(png_infopp ptr_ptr, png_size_t png_info_struct_size)
-{
-   png_infop info_ptr = *ptr_ptr;
-
-   png_debug(1, "in png_info_init_3\n");
-
-   if(sizeof(png_info) > png_info_struct_size)
-     {
-       png_destroy_struct(info_ptr);
-       info_ptr = (png_infop)png_create_struct(PNG_STRUCT_INFO);
-       *ptr_ptr = info_ptr;
-     }
-
    /* set everything to 0 */
    png_memset(info_ptr, 0, sizeof (png_info));
 }
@@ -556,7 +537,7 @@ png_info_destroy(png_structp png_ptr, png_infop info_ptr)
    }
 #endif
 
-   png_info_init_3(&info_ptr, sizeof(png_info));
+   png_info_init(info_ptr);
 }
 
 /* This function returns a pointer to the io_ptr associated with the user
@@ -646,7 +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 1.0.12beta1 - May 14, 2001\n\
+   return ((png_charp) "\n libpng version 1.2.0beta1 - May 6, 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");
@@ -664,8 +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) "1.0.12beta1");
+      return((png_charp) "1.2.0beta1");
-   return((png_charp) "1.0.12beta1");
+   return((png_charp) "1.2.0beta1");
 }
 
 png_charp PNGAPI
@@ -715,9 +696,58 @@ png_uint_32 PNGAPI
 png_access_version_number(void)
 {
    /* Version of *.c files used when building libpng */
-   return((png_uint_32) 10012L);
+   return((png_uint_32) 10200L);
 }
 
+
+#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))

png.h

@@ -1,7 +1,7 @@
 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.0.12beta1 - May 14, 2001
+ * libpng version 1.2.0beta1 - May 6, 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 1.0.12beta1 - May 14, 2001: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.0beta1 - May 6, 2001: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -70,10 +70,8 @@
  *    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
- *    1.0.12beta1              2    10012  2.1.0.11beta1
+ *    1.1.0a-f                 1    10100  2.1.1.0 (branch abandoned)
- *    1.1.0a-f                 1    10100  2.1.1.0a-f (branch abandoned)
+ *    1.2.0beta1               2    10200  2.1.2.0beta1
- *    1.2.0beta1-2             2    10200  2.1.2.0beta1-2
- *    1.2.0beta3               3    10200  3.1.2.0beta3
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -103,7 +101,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.0.7, July 1, 2000, through  1.0.12beta1, May 14, 2001, are
+ * libpng versions 1.0.7, July 1, 2000, through  1.2.0beta1, May 6, 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
@@ -208,13 +206,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    May 14, 2001
+ *    May 6, 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 1.0.12beta1 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.0beta1 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
@@ -270,15 +268,15 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.0.12beta1"
+#define PNG_LIBPNG_VER_STRING "1.2.0beta1"
 
 #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_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 12
+#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: */
 
@@ -297,7 +295,7 @@
  * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release */
-#define PNG_LIBPNG_VER 10012 /* 1.0.12 */
+#define PNG_LIBPNG_VER 10200 /* 1.2.0 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 
@@ -703,7 +701,6 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
    png_byte pcal_nparams;   /* number of parameters given in pcal_params */
 #endif
 
-/* New members added in libpng-1.0.6 */
 #ifdef PNG_FREE_ME_SUPPORTED
    png_uint_32 free_me;     /* flags items libpng is responsible for freeing */
 #endif
@@ -1144,6 +1141,12 @@ struct png_struct_def
    png_charp time_buffer;            /* String to hold RFC 1123 time text */
 #endif
 
+#ifdef PNG_USER_MEM_SUPPORTED
+   png_voidp mem_ptr;                /* user supplied struct for mem functions */
+   png_malloc_ptr malloc_fn;         /* function for allocating memory */
+   png_free_ptr free_fn;             /* function for freeing memory */
+#endif
+
 /* New members added in libpng-1.0.6 */
 
 #ifdef PNG_FREE_ME_SUPPORTED
@@ -1160,59 +1163,41 @@ struct png_struct_def
    png_bytep chunk_list;
 #endif
 
-/* New members added in libpng-1.0.3 */
 #if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
    png_byte rgb_to_gray_status;
-   /* These were changed from png_byte in libpng-1.0.6 */
    png_uint_16 rgb_to_gray_red_coeff;
    png_uint_16 rgb_to_gray_green_coeff;
    png_uint_16 rgb_to_gray_blue_coeff;
 #endif
 
-/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
 #if defined(PNG_MNG_FEATURES_SUPPORTED) || \
     defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
     defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
-/* changed from png_byte to png_uint_32 at version 1.2.0 */
+/* Note to maintainer: change this to png_uint_32 at next opportunity */
    png_byte mng_features_permitted;
 #endif
 
-/* New member added in libpng-1.0.7 */
 #if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
    png_fixed_point int_gamma;
 #endif
 
-/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
    png_byte filter_type;
-#endif
 
-#if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
-/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */
-   png_uint_32 row_buf_size;
-#endif
-
-/* New members added in libpng-1.2.0 */
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
    png_byte     mmx_bitdepth_threshold;
    png_uint_32  mmx_rowbytes_threshold;
    png_uint_32  asm_flags;
 #endif
 
-/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
+   png_uint_32 row_buf_size;
-#ifdef PNG_USER_MEM_SUPPORTED
-   png_voidp mem_ptr;                /* user supplied struct for mem functions */
-   png_malloc_ptr malloc_fn;         /* function for allocating memory */
-   png_free_ptr free_fn;             /* function for freeing memory */
-#endif
 
 };
 
 
 /* This prevents a compiler error in png_get_copyright() in png.c if png.c
-   and png.h are both at version 1.0.12beta1
+and png.h are both at * version 1.2.0beta1
  */
-typedef png_structp version_1_0_12beta1;
+typedef png_structp version_1_2_0beta1;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -1263,7 +1248,6 @@ extern PNG_EXPORT(void,png_set_compression_buffer_size)
 /* Reset the compression stream */
 extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr));
 
-/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
 #ifdef PNG_USER_MEM_SUPPORTED
 extern PNG_EXPORT(png_structp,png_create_read_struct_2)
    PNGARG((png_const_charp user_png_ver, png_voidp error_ptr,
@@ -1294,11 +1278,8 @@ extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr));
 extern PNG_EXPORT(png_infop,png_create_info_struct)
    PNGARG((png_structp png_ptr));
 
-/* Initialize the info structure (old interface - DEPRECATED) */
+/* Initialize the info structure (old interface - NOT DLL EXPORTED) */
-extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr));
+extern void png_info_init PNGARG((png_infop info_ptr));
-#define png_info_init(info_ptr) png_info_init_3(&info_ptr, sizeof(png_info));
-extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr,
-    png_size_t png_info_struct_size));
 
 /* Writes all the PNG information before the image. */
 extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr,
@@ -2256,11 +2237,68 @@ extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp
    png_ptr, png_uint_32 mng_features_permitted));
 #endif
 
-/* png_mmx_support will be included unconditionally starting in version 1.2.0 */
+/* Added to version 1.2.0 */
-#if defined(PNG_ASSEMBLER_CODE_SUPPORTED) || defined(PNG_USE_PNGGCCRD)
+#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));
-#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */
 
 /* Strip the prepended error numbers ("#nnn ") from error and warning
  * messages before passing them to the error or warning handler. */
@@ -2272,7 +2310,7 @@ extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp
 /* Maintainer: Put new public prototypes here ^, in libpng.3, and project defs */
 
 #define PNG_HEADER_VERSION_STRING \
-   " libpng version 1.0.12beta1 - May 14, 2001 (header)\n"
+   " libpng version 1.2.0beta1 - May 6, 2001 (header)\n"
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
@@ -2505,10 +2543,8 @@ PNG_EXTERN png_uint_16 png_get_uint_16 PNGARG((png_bytep buf));
  * (old interface - DEPRECATED - use png_create_read_struct instead).
  */
 extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr));
-#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \
+#define png_read_init(png_ptr) png_read_init_2(png_ptr, \
-    PNG_LIBPNG_VER_STRING,  sizeof(png_struct));
+    PNG_LIBPNG_VER_STRING,  sizeof(png_struct), sizeof(png_info));
-extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr,
-    png_const_charp user_png_ver, png_size_t png_struct_size));
 extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
     png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
     png_info_size));
@@ -2517,10 +2553,8 @@ extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr,
  * (old interface - DEPRECATED - use png_create_write_struct instead).
  */
 extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr));
-#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \
+#define png_write_init(png_ptr) png_write_init_2(png_ptr, \
-    PNG_LIBPNG_VER_STRING, sizeof(png_struct));
+    PNG_LIBPNG_VER_STRING, sizeof(png_struct), sizeof(png_info));
-extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr,
-    png_const_charp user_png_ver, png_size_t png_struct_size));
 extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr,
     png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t
     png_info_size));
@@ -2532,9 +2566,9 @@ PNG_EXTERN png_voidp png_create_struct PNGARG((int type));
 PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr));
 
 PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr
-  malloc_fn, png_voidp mem_ptr));
+  malloc_fn));
 PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr,
-   png_free_ptr free_fn, png_voidp mem_ptr));
+   png_free_ptr free_fn));
 
 /* Free any memory that info_ptr points to and reset struct. */
 PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr,
@@ -3078,6 +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 */

pngasmrd.h

@@ -1,6 +1,6 @@
 /* pngasmrd.h - assembler version of utilities to read a PNG file
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 2001 Glenn Randers-Pehrson
  *

pngconf.h

@@ -1,6 +1,6 @@
 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -47,13 +47,11 @@
 
 /* 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
@@ -590,12 +588,9 @@
 #  define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
 #endif
 
-/* Will be enabled in libpng-1.2.0 */
-/*
 #ifndef PNG_NO_ERROR_NUMBERS
 #define PNG_ERROR_NUMBERS_SUPPORTED
 #endif
-*/
 
 #ifndef PNG_NO_WRITE_FLUSH
 #  define PNG_WRITE_FLUSH_SUPPORTED
@@ -628,13 +623,12 @@
  * png_get_x_offset_microns()
  * png_get_y_offset_microns()
  */
-#if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
+#ifndef PNG_NO_EASY_ACCESS
 #  define PNG_EASY_ACCESS_SUPPORTED
 #endif
 
 /* 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)
 #  ifndef PNG_ASSEMBLER_CODE_SUPPORTED
 #    define PNG_ASSEMBLER_CODE_SUPPORTED
@@ -643,24 +637,6 @@
 #    define PNG_MMX_CODE_SUPPORTED
 #  endif
 #endif
-*/
-#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
-#  endif
-#endif
-
-/* This will be enabled by default in libpng-1.2.0 */
-/*
-#if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
-#  define PNG_USER_MEM_SUPPORTED
-#endif
-*/
 
 /* These are currently experimental features, define them if you want */
 
@@ -671,6 +647,9 @@
 #    define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
 #  endif
 #endif
+#ifndef PNG_NO_USER_MEM
+#  define PNG_USER_MEM_SUPPORTED
+#endif
 #ifndef PNG_NO_ZALLOC_ZERO
 #  define PNG_ZALLOC_ZERO
 #endif

pngerror.c

@@ -1,7 +1,7 @@
 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -152,7 +152,7 @@ png_chunk_error(png_structp png_ptr, png_const_charp message)
 void PNGAPI
 png_chunk_warning(png_structp png_ptr, png_const_charp message)
 {
-   char msg[18+64];
+   char msg[16+64];
    png_format_buffer(png_ptr, msg, message);
    png_warning(png_ptr, msg);
 }

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 1.0.12beta1 - May 14, 2001
+ * libpng version 1.2.0beta1 - May 6, 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           //
@@ -4884,7 +4930,6 @@ 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 */
 
@@ -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 &&
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
          {
             png_read_filter_row_mmx_sub(row_info, row);
          }
@@ -4964,9 +5015,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
 
       case PNG_FILTER_VALUE_UP:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
          {
             png_read_filter_row_mmx_up(row_info, row, prev_row);
          }
@@ -4988,9 +5039,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
 
       case PNG_FILTER_VALUE_AVG:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
          {
             png_read_filter_row_mmx_avg(row_info, row, prev_row);
          }
@@ -5022,9 +5073,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
 
       case PNG_FILTER_VALUE_PAETH:
 #if defined(PNG_ASSEMBLER_CODE_SUPPORTED)
-         if ( _mmx_supported &&
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
          {
             png_read_filter_row_mmx_paeth(row_info, row, prev_row);
          }
@@ -5177,4 +5228,5 @@ png_mmx_support(void)
     return _mmx_supported;
 }
 
+
 #endif /* PNG_USE_PNGGCCRD */

pngget.c

@@ -1,7 +1,7 @@
 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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);
@@ -297,7 +297,7 @@ png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
      *.00003937);
 }
 
-#if defined(PNG_pHYs_SUPPORTED)
+#if defined(PNG_READ_pHYs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@@ -330,7 +330,7 @@ png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
    }
    return (retval);
 }
-#endif /* PNG_pHYs_SUPPORTED */
+#endif /* PNG_READ_pHYs_SUPPORTED */
 #endif  /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
 
 /* png_get_channels really belongs in here, too, but it's been around longer */
@@ -355,7 +355,7 @@ png_get_signature(png_structp png_ptr, png_infop info_ptr)
       return (NULL);
 }
 
-#if defined(PNG_bKGD_SUPPORTED)
+#if defined(PNG_READ_bKGD_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
    png_color_16p *background)
@@ -371,7 +371,7 @@ png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_cHRM_SUPPORTED)
+#if defined(PNG_READ_cHRM_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
@@ -435,7 +435,7 @@ png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#if defined(PNG_gAMA_SUPPORTED)
+#if defined(PNG_READ_gAMA_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
@@ -467,7 +467,7 @@ png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#if defined(PNG_sRGB_SUPPORTED)
+#if defined(PNG_READ_sRGB_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 {
@@ -482,7 +482,7 @@ png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
 }
 #endif
 
-#if defined(PNG_iCCP_SUPPORTED)
+#if defined(PNG_READ_iCCP_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
              png_charpp name, int *compression_type,
@@ -504,7 +504,7 @@ png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_sPLT_SUPPORTED)
+#if defined(PNG_READ_sPLT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
              png_sPLT_tpp spalettes)
@@ -515,7 +515,7 @@ png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_hIST_SUPPORTED)
+#if defined(PNG_READ_hIST_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
 {
@@ -576,7 +576,7 @@ png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
    return (0);
 }
 
-#if defined(PNG_oFFs_SUPPORTED)
+#if defined(PNG_READ_oFFs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
    png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
@@ -594,7 +594,7 @@ png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_pCAL_SUPPORTED)
+#if defined(PNG_READ_pCAL_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
    png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
@@ -618,7 +618,7 @@ png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_sCAL_SUPPORTED)
+#if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
 #ifdef PNG_FLOATING_POINT_SUPPORTED
 png_uint_32 PNGAPI
 png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
@@ -654,7 +654,7 @@ png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
 #endif
 #endif
 
-#if defined(PNG_pHYs_SUPPORTED)
+#if defined(PNG_READ_pHYs_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
    png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
@@ -701,7 +701,7 @@ png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
    return (0);
 }
 
-#if defined(PNG_sBIT_SUPPORTED)
+#if defined(PNG_READ_sBIT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 {
@@ -716,7 +716,7 @@ png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
 }
 #endif
 
-#if defined(PNG_TEXT_SUPPORTED)
+#if defined(PNG_READ_TEXT_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
    int *num_text)
@@ -738,7 +738,7 @@ png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
 }
 #endif
 
-#if defined(PNG_tIME_SUPPORTED)
+#if defined(PNG_READ_tIME_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 {
@@ -753,7 +753,7 @@ png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
 }
 #endif
 
-#if defined(PNG_tRNS_SUPPORTED)
+#if defined(PNG_READ_tRNS_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
    png_bytep *trans, int *num_trans, png_color_16p *trans_values)
@@ -792,7 +792,7 @@ png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
 }
 #endif
 
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
 png_uint_32 PNGAPI
 png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
              png_unknown_chunkpp unknowns)
@@ -811,7 +811,7 @@ png_get_rgb_to_gray_status (png_structp png_ptr)
 }
 #endif
 
-#if defined(PNG_USER_CHUNKS_SUPPORTED)
+#if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
 png_voidp PNGAPI
 png_get_user_chunk_ptr(png_structp png_ptr)
 {

pngmem.c

@@ -1,7 +1,7 @@
 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -27,12 +27,12 @@ png_voidp /* PRIVATE */
 png_create_struct(int type)
 {
 #ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, NULL, NULL));
+   return (png_create_struct_2(type, NULL));
 }
 
 /* Alternate version of png_create_struct, for use with user-defined malloc. */
 png_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+png_create_struct_2(int type, png_malloc_ptr malloc_fn)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
    png_size_t size;
@@ -48,18 +48,9 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
 #ifdef PNG_USER_MEM_SUPPORTED
    if(malloc_fn != NULL)
    {
-      if (mem_ptr != NULL)
+      if ((struct_ptr = (*(malloc_fn))(NULL, size)) != NULL)
-      {
-         png_struct dummy_struct;
-         png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
-         struct_ptr = (*(malloc_fn))(png_ptr, size);
-      }
-      else
-         struct_ptr = (*(malloc_fn))(NULL, size);
-      if (struct_ptr != NULL)
          png_memset(struct_ptr, 0, size);
-      return (struct_ptr);
+         return (struct_ptr);
    }
 #endif /* PNG_USER_MEM_SUPPORTED */
    if ((struct_ptr = (png_voidp)farmalloc(size)) != NULL)
@@ -75,13 +66,12 @@ void /* PRIVATE */
 png_destroy_struct(png_voidp struct_ptr)
 {
 #ifdef PNG_USER_MEM_SUPPORTED
-   png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL, (png_voidp)NULL);
+   png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL);
 }
 
 /* Free memory allocated by a png_create_struct() call */
 void /* PRIVATE */
-png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn)
-    png_voidp mem_ptr)
 {
 #endif
    if (struct_ptr != NULL)
@@ -91,7 +81,6 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
       {
          png_struct dummy_struct;
          png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
          (*(free_fn))(png_ptr, struct_ptr);
          return;
       }
@@ -130,12 +119,7 @@ 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);
 }
@@ -297,14 +281,14 @@ png_voidp /* PRIVATE */
 png_create_struct(int type)
 {
 #ifdef PNG_USER_MEM_SUPPORTED
-   return (png_create_struct_2(type, NULL, NULL));
+   return (png_create_struct_2(type, NULL));
 }
 
 /* Allocate memory for a png_struct or a png_info.  The malloc and
    memset can be replaced by a single call to calloc() if this is thought
    to improve performance noticably.*/
 png_voidp /* PRIVATE */
-png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
+png_create_struct_2(int type, png_malloc_ptr malloc_fn)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
    png_size_t size;
@@ -320,16 +304,7 @@ png_create_struct_2(int type, png_malloc_ptr malloc_fn, png_voidp mem_ptr)
 #ifdef PNG_USER_MEM_SUPPORTED
    if(malloc_fn != NULL)
    {
-      if (mem_ptr != NULL)
+      if ((struct_ptr = (*(malloc_fn))(NULL, size)) != NULL)
-      {
-         png_struct dummy_struct;
-         png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
-         struct_ptr = (*(malloc_fn))(png_ptr, size);
-      }
-      else
-         struct_ptr = (*(malloc_fn))(NULL, size);
-      if (struct_ptr != NULL)
          png_memset(struct_ptr, 0, size);
       return (struct_ptr);
    }
@@ -357,13 +332,12 @@ void /* PRIVATE */
 png_destroy_struct(png_voidp struct_ptr)
 {
 #ifdef PNG_USER_MEM_SUPPORTED
-   png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL, (png_voidp)NULL);
+   png_destroy_struct_2(struct_ptr, (png_free_ptr)NULL);
 }
 
 /* Free memory allocated by a png_create_struct() call */
 void /* PRIVATE */
-png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
+png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn)
-    png_voidp mem_ptr)
 {
 #endif /* PNG_USER_MEM_SUPPORTED */
    if (struct_ptr != NULL)
@@ -373,7 +347,6 @@ png_destroy_struct_2(png_voidp struct_ptr, png_free_ptr free_fn,
       {
          png_struct dummy_struct;
          png_structp png_ptr = &dummy_struct;
-         png_ptr->mem_ptr=mem_ptr;
          (*(free_fn))(png_ptr, struct_ptr);
          return;
       }
@@ -400,18 +373,15 @@ 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));
 }
@@ -437,7 +407,9 @@ png_malloc_default(png_structp png_ptr, png_uint_32 size)
 #endif
 
    if (ret == NULL)
+   {
       png_error(png_ptr, "Out of Memory");
+   }
 
    return (ret);
 }

pngpread.c

@@ -1,7 +1,7 @@
 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -796,19 +796,6 @@ png_push_process_row(png_structp png_ptr)
                   png_read_push_finish_row(png_ptr);
                }
             }
-	    if (png_ptr->pass == 4 && png_ptr->height <= 4)
-	    {
-	        for (i = 0; i < 2 && png_ptr->pass == 4; i++)
-                {
-                   png_push_have_row(png_ptr, NULL);
-                   png_read_push_finish_row(png_ptr);
-                }
-            }
-            if (png_ptr->pass == 6 && png_ptr->height <= 4)
-            {
-                png_push_have_row(png_ptr, NULL);
-                png_read_push_finish_row(png_ptr);
-            }
             break;
          }
          case 1:
@@ -995,20 +982,19 @@ 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
+png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
-   length)
 {
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place tEXt");
          /* to quiet some compiler warnings */
-         if(info_ptr == NULL) return;
+         info_ptr = info_ptr;
       }
 
 #ifdef PNG_MAX_MALLOC_64K
    png_ptr->skip_length = 0;  /* This may not be necessary */
 
-   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
+   if (length > (png_uint_32)65535L) /* Can't hold the 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;
@@ -1087,14 +1073,13 @@ 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
+png_push_handle_zTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
-   length)
 {
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place zTXt");
          /* to quiet some compiler warnings */
-         if(info_ptr == NULL) return;
+         info_ptr = info_ptr;
       }
 
 #ifdef PNG_MAX_MALLOC_64K
@@ -1200,8 +1185,8 @@ 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
+                  (png_uint_32)(png_ptr->zbuf_size - png_ptr->zstream.avail_out +
-                     + key_size + 1));
+                     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);
@@ -1272,20 +1257,19 @@ 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
+png_push_handle_iTXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
-   length)
 {
    if (!(png_ptr->mode & PNG_HAVE_IHDR) || (png_ptr->mode & PNG_HAVE_IEND))
       {
          png_error(png_ptr, "Out of place iTXt");
          /* to quiet some compiler warnings */
-         if(info_ptr == NULL) return;
+         info_ptr = info_ptr;
       }
 
 #ifdef PNG_MAX_MALLOC_64K
    png_ptr->skip_length = 0;  /* This may not be necessary */
 
-   if (length > (png_uint_32)65535L) /* Can't hold entire string in memory */
+   if (length > (png_uint_32)65535L) /* Can't hold the 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;
@@ -1383,8 +1367,7 @@ 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
+png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
-   length)
 {
    png_uint_32 skip=0;
    png_check_chunk_name(png_ptr, png_ptr->chunk_name);
@@ -1395,15 +1378,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
       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 == NULL
+           && png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
 #endif
          )
 #endif
          png_chunk_error(png_ptr, "unknown critical chunk");
 
-      /* to quiet compiler warnings about unused info_ptr */
+         /* to quiet compiler warnings about unused info_ptr */
-      if (info_ptr == NULL)
+         info_ptr = info_ptr;
-         return;
    }
 
 #if defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
@@ -1420,12 +1402,12 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
        }
 #endif
 
-       png_strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
+       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;
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-       if(png_ptr->read_user_chunk_fn != NULL)
+       if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
        {
           /* callback to user unknown chunk handler */
           if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)

pngread.c

@@ -1,7 +1,7 @@
 
 /* pngread.c - read a PNG file
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -46,7 +46,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    png_debug(1, "in png_create_read_struct\n");
 #ifdef PNG_USER_MEM_SUPPORTED
    if ((png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
-      (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr)) == NULL)
+      (png_malloc_ptr)malloc_fn)) == NULL)
 #else
    if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
 #endif
@@ -54,6 +54,10 @@ 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
    if (setjmp(jmpbuf))
@@ -92,7 +96,6 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
       * only check the first digit.
       */
      if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
-         (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
          (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
      {
         png_error(png_ptr,
@@ -100,17 +103,15 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
      }
 
      /* Libpng 1.0.6 was not binary compatible, due to insertion of the
-        info_ptr->free_me member.  Libpng-1.0.1 and earlier were not
+        info_ptr->free_me member.  Note to maintainer: this test can be
-        compatible due to insertion of the user transform function. Note
+        removed from version 2.0.0 and beyond because the previous test
-        to maintainer: this test can be removed from version 1.2.0 and
+        would have already rejected it. */
-        beyond because the previous test would have already rejected it. */
 
-     if (user_png_ver[0] == '1' && user_png_ver[2] == '0' &&
+     if (user_png_ver[4] == '6' && user_png_ver[2] == '0' &&
-         (user_png_ver[4] <  '2' || user_png_ver[4] == '6') &&
+         user_png_ver[0] == '1' && user_png_ver[5] == '\0')
-         user_png_ver[5] == '\0')
      {
         png_error(png_ptr,
-        "Application must be recompiled; versions <= 1.0.6 were incompatible");
+           "Application must be recompiled; version 1.0.6 was incompatible");
      }
    }
 
@@ -147,42 +148,18 @@ void PNGAPI
 png_read_init(png_structp png_ptr)
 {
    /* We only come here via pre-1.0.7-compiled applications */
-   png_read_init_2(png_ptr, "1.0.0", 0, 0);
+   png_read_init_2(png_ptr, "1.0.0", 10000, 10000);
 }
 
-#undef png_read_init_2
 void PNGAPI
 png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
    png_size_t png_struct_size, png_size_t png_info_size)
-{
-   /* We only come here via pre-1.0.12-compiled applications */
-   if(sizeof(png_struct) > png_struct_size)
-     {
-       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_error(png_ptr,
-       "The png struct allocated by the application for reading is too small.");
-     }
-   if(sizeof(png_info) > png_info_size)
-     {
-       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_error(png_ptr,
-         "The info struct allocated by application for reading is too small.");
-     }
-   png_read_init_3(&png_ptr, user_png_ver, png_struct_size);
-}
-
-void PNGAPI
-png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
-   png_size_t png_struct_size)
 {
 #ifdef PNG_SETJMP_SUPPORTED
    jmp_buf tmp_jmp;  /* to save current jump buffer */
 #endif
 
    int i=0;
-
-   png_structp png_ptr=*ptr_ptr;
-
    do
    {
      if(user_png_ver[i] != png_libpng_ver[i])
@@ -190,31 +167,35 @@ png_read_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 #ifdef PNG_LEGACY_SUPPORTED
        png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
 #else
-       png_ptr->warning_fn=(png_error_ptr)NULL;
+       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_warning(png_ptr,
+       png_error(png_ptr,
-        "Application uses deprecated png_read_init() and should be recompiled.");
+        "Application uses deprecated png_read_init() and must be recompiled.");
-       break;
 #endif
      }
    } while (png_libpng_ver[i++]);
 
-   png_debug(1, "in png_read_init_3\n");
+   if(sizeof(png_struct) > png_struct_size ||
+      sizeof(png_info) > png_info_size)
+     {
+       png_ptr->error_fn=(png_error_ptr)NULL;
+       png_error(png_ptr,
+      "Application and library have different sized structs. Please recompile.");
+     }
+
+   png_debug(1, "in png_read_init_2\n");
 
 #ifdef PNG_SETJMP_SUPPORTED
    /* save jump buffer and error functions */
    png_memcpy(tmp_jmp, png_ptr->jmpbuf, sizeof (jmp_buf));
 #endif
 
-   if(sizeof(png_struct) > png_struct_size)
-     {
-       png_destroy_struct(png_ptr);
-       *ptr_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
-       png_ptr = *ptr_ptr;
-     }
-
    /* 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));
@@ -742,7 +723,7 @@ 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 1.0.12beta1
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta1
  */
 
 void PNGAPI
@@ -791,7 +772,7 @@ 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 1.0.12beta1
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.0beta1
  */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)
@@ -1021,7 +1002,6 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    png_infop info_ptr = NULL, end_info_ptr = NULL;
 #ifdef PNG_USER_MEM_SUPPORTED
    png_free_ptr free_fn = NULL;
-   png_voidp mem_ptr = NULL;
 #endif
 
    png_debug(1, "in png_destroy_read_struct\n");
@@ -1037,7 +1017,6 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 
 #ifdef PNG_USER_MEM_SUPPORTED
    free_fn = png_ptr->free_fn;
-   mem_ptr = png_ptr->mem_ptr;
 #endif
 
    png_read_destroy(png_ptr, info_ptr, end_info_ptr);
@@ -1049,8 +1028,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 #endif
 
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
+      png_destroy_struct_2((png_voidp)info_ptr, free_fn);
-          (png_voidp)mem_ptr);
 #else
       png_destroy_struct((png_voidp)info_ptr);
 #endif
@@ -1063,8 +1041,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
       png_free_data(png_ptr, end_info_ptr, PNG_FREE_TEXT, -1);
 #endif
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn,
+      png_destroy_struct_2((png_voidp)end_info_ptr, free_fn);
-         (png_voidp)mem_ptr);
 #else
       png_destroy_struct((png_voidp)end_info_ptr);
 #endif
@@ -1074,8 +1051,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
    if (png_ptr != NULL)
    {
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+      png_destroy_struct_2((png_voidp)png_ptr, free_fn);
-          (png_voidp)mem_ptr);
 #else
       png_destroy_struct((png_voidp)png_ptr);
 #endif
@@ -1084,7 +1060,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
 }
 
 /* free all memory used by the read (old method) */
-void /* PRIVATE */
+void PNGAPI
 png_read_destroy(png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr)
 {
 #ifdef PNG_SETJMP_SUPPORTED
@@ -1337,7 +1313,7 @@ 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 (i.e., you selected such a transform above).
+    * update the palette for you (ie you selected such a transform above).
     */
    png_read_update_info(png_ptr, info_ptr);
 
@@ -1349,15 +1325,13 @@ 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);
@@ -1366,7 +1340,7 @@ 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 == NULL)
+   if(transforms == 0 || params == (voidp)NULL)
       /* quiet compiler warnings */ return;
 
 }

pngrio.c

@@ -1,7 +1,7 @@
 
 /* pngrio.c - functions for data input
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -26,7 +26,7 @@
 void /* PRIVATE */
 png_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 {
-   png_debug1(4,"reading %d bytes\n", (int)length);
+   png_debug1(4,"reading %d bytes\n", length);
    if (png_ptr->read_data_fn != NULL)
       (*(png_ptr->read_data_fn))(png_ptr, data, length);
    else

pngrtran.c

@@ -1,7 +1,7 @@
 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)

pngrutil.c

@@ -1,7 +1,7 @@
 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -30,7 +30,7 @@ __inline double strtod(const char *nptr, char **endptr)
       MultiByteToWideChar(CP_ACP, 0, nptr, -1, str, len);
       result = wcstod(str, &end);
       len = WideCharToMultiByte(CP_ACP, 0, end, -1, NULL, 0, NULL, NULL);
-      *endptr = (char *)nptr + (png_strlen(nptr) - len + 1);
+      *endptr = (char *)nptr + (strlen(nptr) - len + 1);
       free(str);
    }
    return result;
@@ -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;
             }
@@ -332,6 +332,59 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    filter_type = buf[11];
    interlace_type = buf[12];
 
+   /* check for width and height valid values */
+   if (width == 0 || width > PNG_MAX_UINT || height == 0 ||
+        height > PNG_MAX_UINT)
+      png_error(png_ptr, "Invalid image size in IHDR");
+
+   /* check other values */
+   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
+      bit_depth != 8 && bit_depth != 16)
+      png_error(png_ptr, "Invalid bit depth in IHDR");
+
+   if (color_type < 0 || color_type == 1 ||
+      color_type == 5 || color_type > 6)
+      png_error(png_ptr, "Invalid color type in IHDR");
+
+   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
+       ((color_type == PNG_COLOR_TYPE_RGB ||
+         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
+         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
+      png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
+
+   if (interlace_type >= PNG_INTERLACE_LAST)
+      png_error(png_ptr, "Unknown interlace method in IHDR");
+
+   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
+      png_error(png_ptr, "Unknown compression method in IHDR");
+
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
+   /* Accept filter_method 64 (intrapixel differencing) only if
+    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
+    * 2. Libpng did not read a PNG signature (this filter_method is only
+    *    used in PNG datastreams that are embedded in MNG datastreams) and
+    * 3. The application called png_permit_mng_features with a mask that
+    *    included PNG_FLAG_MNG_FILTER_64 and
+    * 4. The filter_method is 64 and
+    * 5. The color_type is RGB or RGBA
+    */
+   if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
+      png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n");
+   if(filter_type != PNG_FILTER_TYPE_BASE)
+   {
+     if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
+        (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
+        ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
+        (color_type == PNG_COLOR_TYPE_RGB || 
+         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
+        png_error(png_ptr, "Unknown filter method in IHDR");
+     if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
+        png_warning(png_ptr, "Invalid filter method in IHDR");
+   }
+#else
+   if(filter_type != PNG_FILTER_TYPE_BASE)
+      png_error(png_ptr, "Unknown filter method in IHDR");
+#endif
 
    /* set internal variables */
    png_ptr->width = width;
@@ -339,9 +392,7 @@ png_handle_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    png_ptr->bit_depth = (png_byte)bit_depth;
    png_ptr->interlaced = (png_byte)interlace_type;
    png_ptr->color_type = (png_byte)color_type;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
    png_ptr->filter_type = (png_byte)filter_type;
-#endif
 
    /* find number of channels */
    switch (png_ptr->color_type)
@@ -398,13 +449,6 @@ 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)
    {
@@ -582,11 +626,7 @@ png_handle_gAMA(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    igamma = (png_fixed_point)png_get_uint_32(buf);
    /* check for zero gamma */
    if (igamma == 0)
-      {
+      return;
-         png_warning(png_ptr,
-           "Ignoring gAMA chunk with gamma=0");
-         return;
-      }
 
 #if defined(PNG_READ_sRGB_SUPPORTED)
    if (info_ptr->valid & PNG_INFO_sRGB)
@@ -1087,7 +1127,7 @@ 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, (png_bytep)chunkdata, slength);
+   png_crc_read(png_ptr, chunkdata, slength);
 
    if (png_crc_finish(png_ptr, skip))
    {
@@ -1117,8 +1157,7 @@ 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_warning(png_ptr, "sPLT chunk has bad length");
+      png_error(png_ptr, "sPLT chunk has bad length");
-      return;
    }
 
    new_palette.nentries = data_length / entry_size;
@@ -1675,8 +1714,8 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    }
 #else
 #ifdef PNG_FIXED_POINT_SUPPORTED
-   swidth = (png_charp)png_malloc(png_ptr, png_strlen(ep) + 1);
+   swidth = (png_charp)png_malloc(png_ptr, strlen(ep) + 1);
-   png_memcpy(swidth, ep, (png_size_t)png_strlen(ep));
+   png_memcpy(swidth, ep, (png_size_t)strlen(ep));
 #endif
 #endif
 
@@ -1693,8 +1732,8 @@ png_handle_sCAL(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
    }
 #else
 #ifdef PNG_FIXED_POINT_SUPPORTED
-   sheight = (png_charp)png_malloc(png_ptr, png_strlen(ep) + 1);
+   sheight = (png_charp)png_malloc(png_ptr, strlen(ep) + 1);
-   png_memcpy(sheight, ep, (png_size_t)png_strlen(ep));
+   png_memcpy(sheight, ep, (png_size_t)strlen(ep));
 #endif
 #endif
 
@@ -1867,7 +1906,7 @@ 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))
    {
@@ -2041,7 +2080,7 @@ 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 == NULL
+           && png_ptr->read_user_chunk_fn == (png_user_chunk_ptr)NULL
 #endif
         )
 #endif
@@ -2061,12 +2100,12 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
            length = (png_uint_32)65535L;
        }
 #endif
-       png_strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
+       strcpy((png_charp)chunk.name, (png_charp)png_ptr->chunk_name);
        chunk.data = (png_bytep)png_malloc(png_ptr, length);
-       chunk.size = (png_size_t)length;
+       png_crc_read(png_ptr, chunk.data, length);
-       png_crc_read(png_ptr, (png_bytep)chunk.data, length);
+       chunk.size = length;
 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
-       if(png_ptr->read_user_chunk_fn != NULL)
+       if(png_ptr->read_user_chunk_fn != (png_user_chunk_ptr)NULL)
        {
           /* callback to user unknown chunk handler */
           if ((*(png_ptr->read_user_chunk_fn)) (png_ptr, &chunk) <= 0)
@@ -2329,10 +2368,6 @@ png_combine_row(png_structp png_ptr, png_bytep row, int mask)
 
 #ifdef PNG_READ_INTERLACING_SUPPORTED
 #ifndef PNG_HAVE_ASSEMBLER_READ_INTERLACE   /* else in pngvcrd.c, pnggccrd.c */
-/* OLD pre-1.0.9 interface:
-void png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
-   png_uint_32 transformations)
- */
 void /* PRIVATE */
 png_do_read_interlace(png_structp png_ptr)
 {
@@ -2968,9 +3003,6 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
       png_error(png_ptr, "This image requires a row greater than 64KB");
 #endif
    png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, row_bytes);
-#if defined(PNG_DEBUG) && defined(PNG_USE_PNGGCCRD)
-   png_ptr->row_buf_size = row_bytes;
-#endif
 
 #ifdef PNG_MAX_MALLOC_64K
    if ((png_uint_32)png_ptr->rowbytes + 1 > (png_uint_32)65536L)

pngset.c

@@ -1,7 +1,7 @@
 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -109,10 +109,9 @@ png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
    info_ptr->int_gamma = (int)(file_gamma*100000.+.5);
 #endif
    info_ptr->valid |= PNG_INFO_gAMA;
-   if(file_gamma == 0.0)
-      png_warning(png_ptr, "Setting gamma=0");
 }
 #endif
+#endif
 void PNGAPI
 png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
    int_gamma)
@@ -128,10 +127,7 @@ png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point
    info_ptr->int_gamma = int_gamma;
 #endif
    info_ptr->valid |= PNG_INFO_gAMA;
-   if(int_gamma == 0)
-      png_warning(png_ptr, "Setting gamma=0");
 }
-#endif
 
 #if defined(PNG_hIST_SUPPORTED)
 void PNGAPI
@@ -143,11 +139,8 @@ 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);
@@ -179,61 +172,6 @@ png_set_IHDR(png_structp png_ptr, png_infop info_ptr,
    if (png_ptr == NULL || info_ptr == NULL)
       return;
 
-   /* check for width and height valid values */
-   if (width == 0 || height == 0)
-      png_error(png_ptr, "Image width or height is zero in IHDR");
-   if (width > PNG_MAX_UINT || height > PNG_MAX_UINT)
-      png_error(png_ptr, "Invalid image size in IHDR");
-
-   /* check other values */
-   if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
-      bit_depth != 8 && bit_depth != 16)
-      png_error(png_ptr, "Invalid bit depth in IHDR");
-
-   if (color_type < 0 || color_type == 1 ||
-      color_type == 5 || color_type > 6)
-      png_error(png_ptr, "Invalid color type in IHDR");
-
-   if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
-       ((color_type == PNG_COLOR_TYPE_RGB ||
-         color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
-      png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
-
-   if (interlace_type >= PNG_INTERLACE_LAST)
-      png_error(png_ptr, "Unknown interlace method in IHDR");
-
-   if (compression_type != PNG_COMPRESSION_TYPE_BASE)
-      png_error(png_ptr, "Unknown compression method in IHDR");
-
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
-   /* Accept filter_method 64 (intrapixel differencing) only if
-    * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
-    * 2. Libpng did not read a PNG signature (this filter_method is only
-    *    used in PNG datastreams that are embedded in MNG datastreams) and
-    * 3. The application called png_permit_mng_features with a mask that
-    *    included PNG_FLAG_MNG_FILTER_64 and
-    * 4. The filter_method is 64 and
-    * 5. The color_type is RGB or RGBA
-    */
-   if((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
-      png_warning(png_ptr,"MNG features are not allowed in a PNG datastream\n");
-   if(filter_type != PNG_FILTER_TYPE_BASE)
-   {
-     if(!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
-        (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
-        ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
-        (color_type == PNG_COLOR_TYPE_RGB || 
-         color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
-        png_error(png_ptr, "Unknown filter method in IHDR");
-     if(png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
-        png_warning(png_ptr, "Invalid filter method in IHDR");
-   }
-#else
-   if(filter_type != PNG_FILTER_TYPE_BASE)
-      png_error(png_ptr, "Unknown filter method in IHDR");
-#endif
-
    info_ptr->width = width;
    info_ptr->height = height;
    info_ptr->bit_depth = (png_byte)bit_depth;
@@ -310,7 +248,6 @@ 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++)
@@ -365,7 +302,7 @@ 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_height = (png_charp)png_malloc(png_ptr, length);
+   info_ptr->scal_s_width = (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;
@@ -412,7 +349,7 @@ png_set_PLTE(png_structp png_ptr, png_infop info_ptr,
 #endif
    png_ptr->palette = (png_colorp)png_zalloc(png_ptr, (uInt)num_palette,
       sizeof (png_color));
-   png_memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color));
+   memcpy(png_ptr->palette, palette, num_palette * sizeof (png_color));
    info_ptr->palette = png_ptr->palette;
    info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
 
@@ -535,9 +472,9 @@ 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_charp)png_malloc(png_ptr, png_strlen(name)+1);
+   new_iccp_name = png_malloc(png_ptr, png_strlen(name)+1);
-   png_strcpy(new_iccp_name, name);
+   strcpy(new_iccp_name, name);
-   new_iccp_profile = (png_charp)png_malloc(png_ptr, proflen);
+   new_iccp_profile = 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);
@@ -606,7 +543,7 @@ 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 == NULL)
+      if (text_ptr[i].key == (png_charp)NULL)
           continue;
 
       key_len = png_strlen(text_ptr[i].key);
@@ -620,11 +557,11 @@ 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 != NULL)
+        if (text_ptr[i].key != (png_charp)NULL)
           lang_len = png_strlen(text_ptr[i].lang);
         else
           lang_len = 0;
-        if (text_ptr[i].lang_key != NULL)
+        if (text_ptr[i].lang_key != (png_charp)NULL)
           lang_key_len = png_strlen(text_ptr[i].lang_key);
         else
           lang_key_len = 0;
@@ -636,7 +573,7 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
       }
 #endif
 
-      if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
+      if (text_ptr[i].text == (png_charp)NULL || text_ptr[i].text[0] == '\0')
       {
          text_length = 0;
 #ifdef PNG_iTXt_SUPPORTED
@@ -654,9 +591,8 @@ png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr,
 
       textp->key = (png_charp)png_malloc(png_ptr,
          (png_uint_32)(key_len + text_length + lang_len + lang_key_len + 4));
-      png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n",
+      png_debug2(2, "Allocated %d bytes at %x in png_set_text\n",
-         (png_uint_32)(key_len + lang_len + lang_key_len + text_length + 4),
+         key_len + lang_len + lang_key_len + text_length + 4, (int)textp->key);
-         (int)textp->key);
 
       png_memcpy(textp->key, text_ptr[i].key,
          (png_size_t)(key_len));
@@ -740,9 +676,8 @@ 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_bytep)png_malloc(png_ptr,
+       png_ptr->trans = info_ptr->trans = png_malloc(png_ptr, num_trans);
-           num_trans);
+       memcpy(info_ptr->trans, trans, num_trans);
-       png_memcpy(info_ptr->trans, trans, num_trans);
 #ifdef PNG_FREE_ME_SUPPORTED
        info_ptr->free_me |= PNG_FREE_TRNS;
 #else
@@ -784,12 +719,12 @@ 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;
     }
@@ -803,7 +738,7 @@ png_set_sPLT(png_structp png_ptr,
 }
 #endif /* PNG_sPLT_SUPPORTED */
 
-#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
+#if defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED)
 void PNGAPI
 png_set_unknown_chunks(png_structp png_ptr,
    png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
@@ -905,8 +840,8 @@ 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_bytep)png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
+    new_list=png_malloc(png_ptr,5*(num_chunks+old_num_chunks));
-    if(png_ptr->chunk_list != NULL)
+    if(png_ptr->chunk_list != (png_bytep)NULL)
     {
        png_memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
        png_free(png_ptr, png_ptr->chunk_list);
@@ -948,6 +883,7 @@ png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
    info_ptr->row_pointers = row_pointers;
    if(row_pointers)
       info_ptr->valid |= PNG_INFO_IDAT;
+
 }
 #endif
 
@@ -958,6 +894,8 @@ 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;
 }

pngtest.c

@@ -1,7 +1,7 @@
 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -51,20 +51,16 @@
 #endif
 
 #if defined(PNG_NO_STDIO)
-#  if defined(_WIN32_WCE)
+#if defined(_WIN32_WCE)
-     typedef HANDLE                png_FILE_p;
+typedef HANDLE                png_FILE_p;
-#  else
+#else
-     typedef FILE                * png_FILE_p;
+typedef FILE                * png_FILE_p;
-#  endif
+#endif
 #endif
 
 /* Makes pngtest verbose so we can find problems (needs to be before png.h) */
 #ifndef PNG_DEBUG
-#  define PNG_DEBUG 0
+#define PNG_DEBUG 0
-#endif
-
-#if !PNG_DEBUG
-#  define SINGLE_ROWBUF_ALLOC	/* makes buffer overruns easier to nail */
 #endif
 
 /* Turn on CPU timing
@@ -283,7 +279,7 @@ pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
 
    if (check != length)
    {
-      png_error(png_ptr, "Read Error!");
+      png_error(png_ptr, "Read Error");
    }
 }
 #else
@@ -488,15 +484,14 @@ 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 = (memory_infop)png_malloc_default(png_ptr,
+      memory_infop pinfo = png_malloc_default(png_ptr, sizeof *pinfo);
-         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_voidp)png_malloc_default(png_ptr, size);
+      pinfo->pointer = png_malloc_default(png_ptr, size);
       pinfo->next = pinformation;
       pinformation = pinfo;
       /* Make sure the caller isn't assuming zeroed memory. */
@@ -538,7 +533,7 @@ png_debug_free(png_structp png_ptr, png_voidp ptr)
                fprintf(STDERR, "Duplicate free of memory\n");
             /* We must free the list element too, but first kill
                the memory that is to be freed. */
-            png_memset(ptr, 0x55, pinfo->size);
+            memset(ptr, 0x55, pinfo->size);
             png_free_default(png_ptr, pinfo);
             pinfo=NULL;
             break;
@@ -569,17 +564,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 {
    static png_FILE_p fpin;
    static png_FILE_p fpout;  /* "static" prevents setjmp corruption */
-   png_structp read_ptr;
+   png_structp read_ptr, write_ptr;
-   png_infop read_info_ptr, end_info_ptr;
+   png_infop read_info_ptr, write_info_ptr, end_info_ptr, write_end_info_ptr;
-#ifdef PNG_WRITE_SUPPORTED
-   png_structp write_ptr;
-   png_infop write_info_ptr;
-   png_infop write_end_info_ptr;
-#else
-   png_structp write_ptr = NULL;
-   png_infop write_info_ptr = NULL;
-   png_infop write_end_info_ptr = NULL;
-#endif
    png_bytep row_buf;
    png_uint_32 y;
    png_uint_32 width, height;
@@ -634,7 +620,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    png_set_error_fn(read_ptr, (png_voidp)inname, pngtest_error,
        pngtest_warning);
 #endif
-#ifdef PNG_WRITE_SUPPORTED
 #ifdef PNG_USER_MEM_SUPPORTED
    write_ptr = png_create_write_struct_2(PNG_LIBPNG_VER_STRING, (png_voidp)NULL,
       (png_error_ptr)NULL, (png_error_ptr)NULL, (png_voidp)NULL,
@@ -646,14 +631,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #if defined(PNG_NO_STDIO)
    png_set_error_fn(write_ptr, (png_voidp)inname, pngtest_error,
        pngtest_warning);
-#endif
 #endif
    png_debug(0, "Allocating read_info, write_info and end_info structures\n");
    read_info_ptr = png_create_info_struct(read_ptr);
-   end_info_ptr = png_create_info_struct(read_ptr);
-#ifdef PNG_WRITE_SUPPORTED
    write_info_ptr = png_create_info_struct(write_ptr);
+   end_info_ptr = png_create_info_struct(read_ptr);
    write_end_info_ptr = png_create_info_struct(write_ptr);
+#ifdef PNG_USER_MEM_SUPPORTED
 #endif
 
 #ifdef PNG_SETJMP_SUPPORTED
@@ -666,10 +650,8 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    {
       fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
       png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
-#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);
@@ -678,7 +660,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    png_memcpy(png_jmpbuf(read_ptr),jmpbuf,sizeof(jmp_buf));
 #endif
 
-#ifdef PNG_WRITE_SUPPORTED
    png_debug(0, "Setting jmpbuf for write struct\n");
 #ifdef USE_FAR_KEYWORD
    if (setjmp(jmpbuf))
@@ -689,9 +670,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
       png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
       png_destroy_info_struct(write_ptr, &write_end_info_ptr);
-#ifdef PNG_WRITE_SUPPORTED
       png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
       FCLOSE(fpin);
       FCLOSE(fpout);
       return (1);
@@ -699,38 +678,29 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #ifdef USE_FAR_KEYWORD
    png_memcpy(png_jmpbuf(write_ptr),jmpbuf,sizeof(jmp_buf));
 #endif
-#endif
 #endif
 
    png_debug(0, "Initializing input and output streams\n");
 #if !defined(PNG_NO_STDIO)
    png_init_io(read_ptr, fpin);
-#  ifdef PNG_WRITE_SUPPORTED
    png_init_io(write_ptr, fpout);
-#  endif
 #else
    png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
-#  ifdef PNG_WRITE_SUPPORTED
    png_set_write_fn(write_ptr, (png_voidp)fpout,  pngtest_write_data,
-#    if defined(PNG_WRITE_FLUSH_SUPPORTED)
+#if defined(PNG_WRITE_FLUSH_SUPPORTED)
       pngtest_flush);
-#    else
+#else
       NULL);
-#    endif
+#endif
-#  endif
 #endif
    if(status_dots_requested == 1)
    {
-#ifdef PNG_WRITE_SUPPORTED
       png_set_write_status_fn(write_ptr, write_row_callback);
-#endif
       png_set_read_status_fn(read_ptr, read_row_callback);
    }
    else
    {
-#ifdef PNG_WRITE_SUPPORTED
       png_set_write_status_fn(write_ptr, NULL);
-#endif
       png_set_read_status_fn(read_ptr, NULL);
    }
 
@@ -1014,29 +984,32 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
    }
 #endif
 
-#ifdef PNG_WRITE_SUPPORTED
    png_debug(0, "\nWriting info struct\n");
 
 /* If we wanted, we could write info in two steps:
    png_write_info_before_PLTE(write_ptr, write_info_ptr);
  */
    png_write_info(write_ptr, write_info_ptr);
-#endif
 
-#ifdef SINGLE_ROWBUF_ALLOC
+   png_debug(0, "\nAllocating row buffer \n");
-   png_debug(0, "\nAllocating row buffer...");
    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)
-#endif /* SINGLE_ROWBUF_ALLOC */
+   {
+      fprintf(STDERR, "No memory to allocate row buffer\n");
+      png_destroy_read_struct(&read_ptr, &read_info_ptr, (png_infopp)NULL);
+      png_destroy_info_struct(write_ptr, &write_end_info_ptr);
+      png_destroy_write_struct(&write_ptr, &write_info_ptr);
+      FCLOSE(fpin);
+      FCLOSE(fpout);
+      return (1);
+   }
    png_debug(0, "Writing row data\n");
 
 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
   defined(PNG_WRITE_INTERLACING_SUPPORTED)
    num_pass = png_set_interlace_handling(read_ptr);
-#  ifdef PNG_WRITE_SUPPORTED
    png_set_interlace_handling(write_ptr);
-#  endif
 #else
    num_pass=1;
 #endif
@@ -1051,16 +1024,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       png_debug1(0, "Writing row data for pass %d\n",pass);
       for (y = 0; y < height; y++)
       {
-#ifndef SINGLE_ROWBUF_ALLOC
-         png_debug2(0, "\nAllocating row buffer (pass %d, y = %ld)...", pass,y);
-         row_buf = (png_bytep)png_malloc(read_ptr,
-            png_get_rowbytes(read_ptr, read_info_ptr));
-         png_debug2(0, "0x%08lx (%ld bytes)\n", (unsigned long)row_buf,
-            png_get_rowbytes(read_ptr, read_info_ptr));
-#endif /* !SINGLE_ROWBUF_ALLOC */
          png_read_rows(read_ptr, (png_bytepp)&row_buf, (png_bytepp)NULL, 1);
-
-#ifdef PNG_WRITE_SUPPORTED
 #ifdef PNGTEST_TIMING
          t_stop = (float)clock();
          t_decode += (t_stop - t_start);
@@ -1072,12 +1036,6 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
          t_encode += (t_stop - t_start);
          t_start = t_stop;
 #endif
-#endif /* PNG_WRITE_SUPPORTED */
-
-#ifndef SINGLE_ROWBUF_ALLOC
-         png_debug2(0, "Freeing row buffer (pass %d, y = %ld)\n\n", pass, y);
-         png_free(read_ptr, row_buf);
-#endif /* !SINGLE_ROWBUF_ALLOC */
       }
    }
 
@@ -1140,9 +1098,7 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
       }
    }
 #endif
-#ifdef PNG_WRITE_SUPPORTED
    png_write_end(write_ptr, write_end_info_ptr);
-#endif
 
 #ifdef PNG_EASY_ACCESS_SUPPORTED
    if(verbose)
@@ -1156,20 +1112,11 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
 #endif
 
    png_debug(0, "Destroying data structs\n");
-#ifdef SINGLE_ROWBUF_ALLOC
-   png_debug(1, "destroying row_buf for read_ptr\n");
    png_free(read_ptr, row_buf);
    row_buf=NULL;
-#endif /* SINGLE_ROWBUF_ALLOC */
-   png_debug(1, "destroying read_ptr, read_info_ptr, end_info_ptr\n");
    png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
-#ifdef PNG_WRITE_SUPPORTED
-   png_debug(1, "destroying write_end_info_ptr\n");
    png_destroy_info_struct(write_ptr, &write_end_info_ptr);
-   png_debug(1, "destroying write_ptr, write_info_ptr\n");
    png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
-   png_debug(0, "Destruction complete.\n");
 
    FCLOSE(fpin);
    FCLOSE(fpout);
@@ -1511,4 +1458,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_0_12beta1 your_png_h_is_not_version_1_0_12beta1;
+typedef version_1_2_0beta1 your_png_h_is_not_version_1_2_0beta1;

pngtrans.c

@@ -1,7 +1,7 @@
 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -392,12 +392,11 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
                sp += 8; dp += 6;
                for (i = 1; i < row_width; i++)
                {
-                  /* This could be (although png_memcpy is probably slower):
+                  /* This could be (although memcpy is probably slower):
                   png_memcpy(dp, sp, 6);
                   sp += 8;
                   dp += 6;
                   */
-
                   *dp++ = *sp++;
                   *dp++ = *sp++;
                   *dp++ = *sp++;
@@ -412,12 +411,11 @@ png_do_strip_filler(png_row_infop row_info, png_bytep row, png_uint_32 flags)
                /* This converts from XXRRGGBB or AARRGGBB to RRGGBB */
                for (i = 0; i < row_width; i++)
                {
-                  /* This could be (although png_memcpy is probably slower):
+                  /* This could be (although memcpy is probably slower):
                   png_memcpy(dp, sp, 6);
                   sp += 8;
                   dp += 6;
                   */
-
                   sp+=2;
                   *dp++ = *sp++;
                   *dp++ = *sp++;

pngvcrd.c

@@ -2,14 +2,14 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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 (
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (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 (
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (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 (
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (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 (
+         if ((png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH) &&
-             (row_info->pixel_depth >= PNG_MMX_BITDEPTH_THRESHOLD_DEFAULT) &&
+             (row_info->pixel_depth >= png_ptr->mmx_bitdepth_threshold) &&
-             (row_info->rowbytes >= PNG_MMX_ROWBYTES_THRESHOLD_DEFAULT))
+             (row_info->rowbytes >= png_ptr->mmx_rowbytes_threshold))
          {
             png_read_filter_row_mmx_paeth(row_info, row, prev_row);
          }

pngwio.c

@@ -1,7 +1,7 @@
 
 /* pngwio.c - functions for data output
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -17,7 +17,6 @@
 
 #define PNG_INTERNAL
 #include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
 
 /* Write the data to whatever output you are using.  The default routine
    writes to a file pointer.  Note that this routine sometimes gets called
@@ -225,4 +224,3 @@ void *png_far_to_near(png_structp png_ptr,png_voidp ptr, int check)
 }
 #   endif
 #   endif
-#endif /* PNG_WRITE_SUPPORTED */

pngwrite.c

@@ -1,7 +1,7 @@
 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -444,7 +444,7 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
    png_debug(1, "in png_create_write_struct\n");
 #ifdef PNG_USER_MEM_SUPPORTED
    if ((png_ptr = (png_structp)png_create_struct_2(PNG_STRUCT_PNG,
-      (png_malloc_ptr)malloc_fn, (png_voidp)mem_ptr)) == NULL)
+      (png_malloc_ptr)malloc_fn)) == NULL)
 #else
    if ((png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG)) == NULL)
 #endif /* PNG_USER_MEM_SUPPORTED */
@@ -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))
@@ -489,7 +493,6 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
       * only check the first digit.
       */
      if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
-         (user_png_ver[0] == '1' && user_png_ver[2] != png_libpng_ver[2]) ||
          (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
      {
         png_error(png_ptr,
@@ -497,17 +500,15 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
      }
 
      /* Libpng 1.0.6 was not binary compatible, due to insertion of the
-        info_ptr->free_me member.  Libpng-1.0.1 and earlier were not
+        info_ptr->free_me member.  Note to maintainer: this test can be
-        compatible due to insertion of the user transform function. Note
+        removed from version 2.0.0 and beyond because the previous test
-        to maintainer: this test can be removed from version 1.2.0 and
+        would have already rejected it. */
-        beyond because the previous test would have already rejected it. */
 
-     if (user_png_ver[0] == '1' && user_png_ver[2] == '0' &&
+     if (user_png_ver[4] == '6' && user_png_ver[2] == '0' &&
-         (user_png_ver[4] <  '2' || user_png_ver[4] == '6') &&
+         user_png_ver[0] == '1' && user_png_ver[5] == '\0')
-         user_png_ver[5] == '\0')
      {
         png_error(png_ptr,
-        "Application must be recompiled; versions <= 1.0.6 were incompatible");
+           "Application must be recompiled; version 1.0.6 was incompatible");
      }
    }
 
@@ -532,36 +533,13 @@ void PNGAPI
 png_write_init(png_structp png_ptr)
 {
    /* We only come here via pre-1.0.7-compiled applications */
-   png_write_init_2(png_ptr, "1.0.0", 0, 0);
+   png_write_init_2(png_ptr, "1.0.0", 10000, 10000);
 }
 
-#undef png_write_init_2
 void PNGAPI
 png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
    png_size_t png_struct_size, png_size_t png_info_size)
 {
-   /* We only come here via pre-1.0.12-compiled applications */
-   if(sizeof(png_struct) > png_struct_size)
-     {
-       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_error(png_ptr,
-         "The png struct allocated by the application is too small.");
-     }
-   if(sizeof(png_info) > png_info_size)
-     {
-       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_error(png_ptr,
-         "The info struct allocated by the application is too small.");
-     }
-   png_write_init_3(&png_ptr, user_png_ver, png_struct_size);
-}
-
-
-void PNGAPI
-png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
-   png_size_t png_struct_size)
-{
-   png_structp png_ptr=*ptr_ptr;
 #ifdef PNG_SETJMP_SUPPORTED
    jmp_buf tmp_jmp; /* to save current jump buffer */
 #endif
@@ -573,42 +551,45 @@ png_write_init_3(png_structpp ptr_ptr, png_const_charp user_png_ver,
 #ifdef PNG_LEGACY_SUPPORTED
        png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
 #else
-       png_ptr->warning_fn=(png_error_ptr)NULL;
+       png_ptr->error_fn=(png_error_ptr)NULL;
-       png_warning(png_ptr,
+       png_error(png_ptr,
-     "Application uses deprecated png_write_init() and should be recompiled.");
+       "Application uses deprecated png_write_init() and must be recompiled.");
-       break;
 #endif
      }
    } while (png_libpng_ver[i++]);
 
-   png_debug(1, "in png_write_init_3\n");
+   if (sizeof(png_struct) > png_struct_size ||
+      sizeof(png_info) > png_info_size)
+     {
+       png_ptr->error_fn=(png_error_ptr)NULL;
+       png_error(png_ptr,
+      "Application and library have different sized structs. Please recompile.");
+     }
+
+   png_debug(1, "in png_write_init_2\n");
 
 #ifdef PNG_SETJMP_SUPPORTED
    /* save jump buffer and error functions */
    png_memcpy(tmp_jmp, png_ptr->jmpbuf, sizeof (jmp_buf));
 #endif
 
-   if (sizeof(png_struct) > png_struct_size)
-     {
-       png_destroy_struct(png_ptr);
-       png_ptr = (png_structp)png_create_struct(PNG_STRUCT_PNG);
-       *ptr_ptr = png_ptr;
-     }
-
    /* 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));
 #endif
 
-   png_set_write_fn(png_ptr, NULL, NULL, NULL);
-
    /* initialize zbuf - compression buffer */
    png_ptr->zbuf_size = PNG_ZBUF_SIZE;
    png_ptr->zbuf = (png_bytep)png_malloc(png_ptr,
       (png_uint_32)png_ptr->zbuf_size);
+   png_set_write_fn(png_ptr, NULL, NULL, NULL);
 
 #if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED)
    png_set_filter_heuristics(png_ptr, PNG_FILTER_HEURISTIC_DEFAULT,
@@ -903,7 +884,6 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
    png_infop info_ptr = NULL;
 #ifdef PNG_USER_MEM_SUPPORTED
    png_free_ptr free_fn = NULL;
-   png_voidp mem_ptr = NULL;
 #endif
 
    png_debug(1, "in png_destroy_write_struct\n");
@@ -932,8 +912,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
 #endif
 
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)info_ptr, (png_free_ptr)free_fn,
+      png_destroy_struct_2((png_voidp)info_ptr, free_fn);
-         (png_voidp)mem_ptr);
 #else
       png_destroy_struct((png_voidp)info_ptr);
 #endif
@@ -944,8 +923,7 @@ png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
    {
       png_write_destroy(png_ptr);
 #ifdef PNG_USER_MEM_SUPPORTED
-      png_destroy_struct_2((png_voidp)png_ptr, (png_free_ptr)free_fn,
+      png_destroy_struct_2((png_voidp)png_ptr, free_fn);
-         (png_voidp)mem_ptr);
 #else
       png_destroy_struct((png_voidp)png_ptr);
 #endif

pngwtran.c

@@ -1,7 +1,7 @@
 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -10,7 +10,6 @@
 
 #define PNG_INTERNAL
 #include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
 
 /* Transform the data according to the user's wishes.  The order of
  * transformations is significant.
@@ -560,4 +559,3 @@ png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
    }
 }
 #endif /* PNG_MNG_FEATURES_SUPPORTED */
-#endif /* PNG_WRITE_SUPPORTED */

pngwutil.c

@@ -1,7 +1,7 @@
 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.0.12beta1 - May 14, 2001
+ * libpng 1.2.0beta1 - May 6, 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)
@@ -10,7 +10,6 @@
 
 #define PNG_INTERNAL
 #include "png.h"
-#ifdef PNG_WRITE_SUPPORTED
 
 /* Place a 32-bit number into a buffer in PNG byte order.  We work
  * with unsigned numbers for convenience, although one supported
@@ -235,8 +234,8 @@ 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
+               png_memcpy(comp->output_ptr, old_ptr,
-                  * sizeof (png_charp));
+           old_max * sizeof (png_charp));
                png_free(png_ptr, old_ptr);
             }
             else
@@ -285,7 +284,7 @@ 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 +434,7 @@ 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
@@ -460,9 +459,7 @@ png_write_IHDR(png_structp png_ptr, png_uint_32 width, png_uint_32 height,
    png_ptr->bit_depth = (png_byte)bit_depth;
    png_ptr->color_type = (png_byte)color_type;
    png_ptr->interlaced = (png_byte)interlace_type;
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
    png_ptr->filter_type = (png_byte)filter_type;
-#endif
    png_ptr->width = width;
    png_ptr->height = height;
 
@@ -537,28 +534,20 @@ 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) || \
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
-    defined(PNG_WRITE_EMPTY_PLTE_PERMITTED)
         !(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)
      {
-        png_error(png_ptr, "Invalid number of colors in palette");
+       if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-     }
+         {
-     else
+           png_error(png_ptr, "Invalid number of colors in palette");
-     {
+         }
-        png_warning(png_ptr, "Invalid number of colors in palette");
+       else
-        return;
+         {
-     }
+           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;
@@ -739,7 +728,7 @@ 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);
@@ -1028,8 +1017,7 @@ 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) || \
+#if defined(PNG_MNG_FEATURES_SUPPORTED)
-    defined(PNG_WRITE_EMPTY_PLTE_PERMITTED)
           (png_ptr->num_palette ||
           (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
 #endif
@@ -1426,9 +1414,9 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
       png_warning(png_ptr, "Unrecognized equation type for pCAL chunk");
 
    purpose_len = png_check_keyword(png_ptr, purpose, &new_purpose) + 1;
-   png_debug1(3, "pCAL purpose length = %d\n", (int)purpose_len);
+   png_debug1(3, "pCAL purpose length = %d\n", purpose_len);
    units_len = png_strlen(units) + (nparams == 0 ? 0 : 1);
-   png_debug1(3, "pCAL units length = %d\n", (int)units_len);
+   png_debug1(3, "pCAL units length = %d\n", units_len);
    total_len = purpose_len + units_len + 10;
 
    params_len = (png_uint_32p)png_malloc(png_ptr, (png_uint_32)(nparams
@@ -1443,7 +1431,7 @@ png_write_pCAL(png_structp png_ptr, png_charp purpose, png_int_32 X0,
       total_len += (png_size_t)params_len[i];
    }
 
-   png_debug1(3, "pCAL total length = %d\n", (int)total_len);
+   png_debug1(3, "pCAL total length = %d\n", total_len);
    png_write_chunk_start(png_ptr, (png_bytep)png_pCAL, (png_uint_32)total_len);
    png_write_chunk_data(png_ptr, (png_bytep)new_purpose, purpose_len);
    png_save_int_32(buf, X0);
@@ -1495,11 +1483,11 @@ png_write_sCAL(png_structp png_ptr, int unit, double width,double height)
 #endif
    total_len = 1 + png_strlen(wbuf)+1 + png_strlen(hbuf);
 
-   png_debug1(3, "sCAL total length = %d\n", (int)total_len);
+   png_debug1(3, "sCAL total length = %d\n", total_len);
    png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
    png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
-   png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
+   png_write_chunk_data(png_ptr, (png_bytep)wbuf, strlen(wbuf)+1);
-   png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
+   png_write_chunk_data(png_ptr, (png_bytep)hbuf, strlen(hbuf));
 
    png_write_chunk_end(png_ptr);
 }
@@ -1517,15 +1505,15 @@ png_write_sCAL_s(png_structp png_ptr, int unit, png_charp width,
 
    png_debug(1, "in png_write_sCAL_s\n");
 
-   png_strcpy(wbuf,(const char *)width);
+   strcpy(wbuf,(const char *)width);
-   png_strcpy(hbuf,(const char *)height);
+   strcpy(hbuf,(const char *)height);
    total_len = 1 + png_strlen(wbuf)+1 + png_strlen(hbuf);
 
    png_debug1(3, "sCAL total length = %d\n", total_len);
    png_write_chunk_start(png_ptr, (png_bytep)png_sCAL, (png_uint_32)total_len);
    png_write_chunk_data(png_ptr, (png_bytep)&unit, 1);
-   png_write_chunk_data(png_ptr, (png_bytep)wbuf, png_strlen(wbuf)+1);
+   png_write_chunk_data(png_ptr, (png_bytep)wbuf, strlen(wbuf)+1);
-   png_write_chunk_data(png_ptr, (png_bytep)hbuf, png_strlen(hbuf));
+   png_write_chunk_data(png_ptr, (png_bytep)hbuf, strlen(hbuf));
 
    png_write_chunk_end(png_ptr);
 }
@@ -2643,4 +2631,3 @@ png_write_filtered_row(png_structp png_ptr, png_bytep filtered_row)
    }
 #endif
 }
-#endif /* PNG_WRITE_SUPPORTED */

projects/msvc/README.txt

@@ -1,5 +1,5 @@
 Microsoft Developer Studio Build File, Format Version 6.00 for
-libpng 1.0.12beta1 (May 14, 2001) and zlib
+libpng 1.2.0beta1 (May 6, 2001) and zlib
 
 Copyright (C) 2000 Simon-Pierre Cadieux
 For conditions of distribution and use, see copyright notice in png.h

projects/msvc/png32ms.def

@@ -6,7 +6,7 @@ LIBRARY
 DESCRIPTION "PNG image compression library for Windows"
 
 EXPORTS
-;Version 1.0.12beta1
+;Version 1.2.0beta1
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
@@ -175,7 +175,6 @@ EXPORTS
   png_write_png    @163
   png_write_row    @164
   png_write_rows    @165
-; png_read_init_2 and png_write_init_2 are deprecated.
   png_read_init_2    @166
   png_write_init_2    @167
   png_access_version_number  @168
@@ -184,30 +183,14 @@ EXPORTS
   png_init_io    @171
   png_convert_to_rfc1123     @172
   png_set_invalid  @173
-; Added at version 1.0.12
+; Added at version 1.2.0
-; For compatiblity with 1.0.7-1.0.11
+  png_permit_mng_features  @174
-  png_info_init @174
+  png_mmx_support  @175
-  png_read_init_3    @175
+  png_get_mmx_flagmask  @176
-  png_write_init_3    @176
+  png_get_asm_flagmask  @177
-  png_info_init_3 @177
+  png_get_asm_flags  @178
-  png_destroy_struct  @178
+  png_get_mmx_bitdepth_threshold  @179
-; To be added at version 1.2.0
+  png_get_mmx_rowbytes_threshold  @180
-; For use with PNG_USER_MEM_SUPPORTED
+  png_set_asm_flags  @181
-; png_destroy_struct_2  @179
+  png_init_mmx_flags  @182
-; png_create_read_struct_2 @180
+  png_set_strip_error_numbers @183
-; png_create_write_struct_2 @181
-; png_malloc_default @182
-; png_free_default @183
-; MNG features
-; png_permit_mng_features  @184
-; MMX support
-; png_mmx_support  @185
-; png_get_mmx_flagmask  @186
-; png_get_asm_flagmask  @187
-; png_get_asm_flags  @188
-; png_get_mmx_bitdepth_threshold  @189
-; png_get_mmx_rowbytes_threshold  @190
-; png_set_asm_flags  @191
-; png_init_mmx_flags  @192
-; Strip error numbers
-; png_set_strip_error_numbers @193

projects/wince/READMEE.WCE

@@ -8,9 +8,9 @@ libpng for WindowsCE Rel.1.0
 
 Introduction
 ============
-This is libpng 1.0.12beta1 ported to WindowsCE 2.0 and 2.11.
+This is libpng 1.2.0beta1 ported to WindowsCE 2.0 and 2.11.
-libpng 1.0.12beta1 is a PNG reference library.
+libpng 1.2.0beta1 is a PNG reference library.
-See README, a document of original libpng 1.0.12beta1.
+See README, a document of original libpng 1.2.0beta1.
 
 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 1.0.12beta1, for conditions
+See README and LICENSE, documents of original libpng 1.2.0beta1, for conditions
 of use and distribution.
 
 Files

projects/wince/READMEJ.WCE

@@ -24,7 +24,7 @@ libpng
 になったいかなる被害についても、作者、配布者、その他利用者以外の人物、
 団体に責任をとる義務はないものとします。
 
-その他、このソフトウェアの利用条件については、原版である libpng 1.0.12beta1に
+その他、このソフトウェアの利用条件については、原版である libpng 1.2.0beta1に
 準拠するものとします。詳しくは、付属の README,LICENSE をお読みください。
 
 収録内容

projects/wince/png32ce.def

@@ -5,7 +5,7 @@
 LIBRARY lpngce
 
 EXPORTS
-;Version 1.0.12beta1
+;Version 1.2.0beta1
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3
@@ -76,7 +76,6 @@ 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
@@ -174,39 +173,22 @@ EXPORTS
   png_write_png    @163
   png_write_row    @164
   png_write_rows    @165
-; png_read_init_2 and png_write_init_2 are deprecated.
   png_read_init_2    @166
   png_write_init_2    @167
   png_access_version_number  @168
 ;  png_sig_bytes    @169
-;  png_libpng_ver    @170
+  png_libpng_ver    @170
   png_init_io    @171
   png_convert_to_rfc1123     @172
   png_set_invalid  @173
-; Added at version 1.0.12
+; Added at version 1.2.0
-; For compatiblity with 1.0.7-1.0.11
+  png_permit_mng_features  @174
-  png_info_init @174
+  png_mmx_support  @175
-  png_read_init_3    @175
+  png_get_mmx_flagmask  @176
-  png_write_init_3    @176
+  png_get_asm_flagmask  @177
-  png_info_init_3 @177
+  png_get_asm_flags  @178
-  png_destroy_struct  @178
+  png_get_mmx_bitdepth_threshold  @179
-; To be added at version 1.2.0
+  png_get_mmx_rowbytes_threshold  @180
-; For use with PNG_USER_MEM_SUPPORTED
+  png_set_asm_flags  @181
-; png_destroy_struct_2  @179
+  png_init_mmx_flags  @182
-; png_create_read_struct_2 @180
+  png_set_strip_error_numbers @183
-; png_create_write_struct_2 @181
-; png_malloc_default @182
-; png_free_default @183
-; MNG features
-; png_permit_mng_features  @184
-; MMX support
-; png_mmx_support  @185
-; png_get_mmx_flagmask  @186
-; png_get_asm_flagmask  @187
-; png_get_asm_flags  @188
-; png_get_mmx_bitdepth_threshold  @189
-; png_get_mmx_rowbytes_threshold  @190
-; png_set_asm_flags  @191
-; png_init_mmx_flags  @192
-; Strip error numbers
-; png_set_strip_error_numbers @193

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 prefix=/usr/local

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=

scripts/makefile.cygwin

@@ -39,9 +39,9 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
 # have to change it.
 PNGMAJ = 2
 #PNGDLL = $2# msvc
-PNGDLL = 2# cygwin 1.0.12beta1
+PNGDLL = 2# cygwin 1.2.0beta1
-PNGMIN = 1.0.12beta1
+PNGMIN = 1.2.0beta1
-PNGMIN_BASE = 1.0.12
+PNGMIN_BASE = 1.2.0
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(PNGDLL).dll

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=cc

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 # where make install puts libpng.a and png.h

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.netbsd

@@ -11,7 +11,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=png
 SHLIB_MAJOR= 2
-SHLIB_MINOR= 1.0.12beta1
+SHLIB_MINOR= 1.2.0beta1
 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

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

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=1.0.12beta1
+VER=1.2.0beta1
-LIBS=libpng.so.1.0.12beta1
+LIBS=libpng.so.1.2.0beta1
 SHAREDLIB=libpng.so
 libdir=$(prefix)/lib32
 

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=1.0.12beta1
+VER=1.2.0beta1
 SONUM=2
 SHAREDLIB=libpng.so
 libdir=$(prefix)

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 = 1.0.12beta1
+PNGMIN = 1.2.0beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/pngdef.pas

@@ -7,8 +7,8 @@ unit pngdef;
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.0.12beta1';
+  PNG_LIBPNG_VER_STRING = '1.2.0beta1';
-  PNG_LIBPNG_VER        =  10012;
+  PNG_LIBPNG_VER        =  10200;
 
 type
   png_uint_32 = Cardinal;

scripts/pngos2.def

@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.0.12beta1
+; Version 1.2.0beta1
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"
@@ -187,8 +187,17 @@ EXPORTS
 ;To be added at version 1.2.0
 ; png_permit_mng_features
 
-;To be added at version 1.2.0
+; Added at version 1.2.0:
-; png_mmx_support
+  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