Imported from libpng-1.2.1beta1.tar

ANNOUNCE

 
-Libpng 1.2.0 - September 1, 2001
+Libpng 1.2.1beta1 - October 19, 2001
 
 This is a public release of libpng, intended for use in production codes.
 
-Changes since the last public release (1.0.12):
+Changes since the last public release (1.2.0):
 
-  Enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
-    by default.
-  Added runtime selection of MMX features.
-  Added png_set_strip_error_numbers function and related macros.
-  Enabled user memory function by default.
-  Increased png_mng_features flag from png_byte to png_uint_32.
-  Bumped shared-library (so-number) and dll-number to 3.
-  Updated makefile.ibmc, makefile.gcmmx
-  Added some typecasts to eliminate gcc 3.0 warnings.  Changed prototypes
-     of png_write_oFFS width and height from png_uint_32 to png_int_32.
-  Updated example.c
-  Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
-  Revised pnggccrd.c to conditionally compile some thread-unsafe code only
-     when PNG_THREAD_UNSAFE_OK is defined.
-  Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
-     value exceeding 2^bit_depth-1
-  Removed restriction that do_invert_mono only operate on 1-bit opaque files
-  Replaced calls to fprintf(stderr,...) with png_warning() or png_debug()
-     in pnggccrd.c
-  Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
+  Revised makefile.std in contrib/pngminus
+  Include background_1 in png_struct regardless of gamma support.
+  Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
+  Revised example.c to provide more details about using row_callback().
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

CHANGES

@@ -733,10 +733,11 @@ version 1.0.6j [May 3, 2000]
 version 1.0.7beta11 [May 7, 2000]
   Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
     which are no longer used.
-  Eliminated the three new members of png_text when PNG_NO_iTXt_SUPPORTED
-    or PNG_LEGACY_SUPPORTED is defined.
-  Made PNG_NO_ITXT_SUPPORTED the default setting, to avoid memory overrun
-    when old applications fill the info_ptr->text structure directly.
+  Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is
+    defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXT_SUPPORTED
+    is defined.
+  Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory
+    overrun when old applications fill the info_ptr->text structure directly.
   Added PNGAPI macro, and added it to the definitions of all exported functions.
   Relocated version macro definitions ahead of the includes of zlib.h and
     pngconf.h in png.h.
@@ -980,6 +981,11 @@ version 1.2.0beta5 [August 8, 2001]
 version 1.2.0 [September 1, 2001]
   Changed a png_warning() to png_debug() in pnggccrd.c
   Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
+version 1.2.1beta1 [October 19, 2001]
+  Revised makefile.std in contrib/pngminus
+  Include background_1 in png_struct regardless of gamma support.
+  Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
+  Revised example.c to provide more details about using row_callback().
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to randeg@alum.rpi.edu

INSTALL

 
-Installing libpng version 1.2.0 - September 1, 2001
+Installing libpng version 1.2.1beta1 - October 19, 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-1.2.0" or "lpng109" and "zlib-1.1.3"
+might be called "libpng-1.2.1beta1" 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:
@@ -64,8 +64,8 @@ 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.2.1.2.0)
- makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.0,
+ makefile.linux    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.1beta1)
+ makefile.gcmmx    =>  Linux/ELF makefile (gcc, creates libpng.so.2.1.2.1beta1,
                        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
@@ -82,9 +82,9 @@ include
  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.2.1.2.0)
+ makefile.sggcc    =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.1beta1)
  makefile.sunos    =>  Sun makefile
- makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.0)
+ makefile.solaris  =>  Solaris 2.X makefile (gcc, creates libpng.so.2.1.2.1beta1)
  makefile.sco      =>  For SCO OSr5  ELF and Unixware 7 with Native cc
  makefile.mips     =>  MIPS makefile
  makefile.acorn    =>  Acorn makefile

LICENSE

@@ -8,7 +8,7 @@ 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 1.2.0, September 1, 2001, are
+libpng versions 1.0.7, July 1, 2000, through 1.2.1beta1, October 19, 2001, are
 Copyright (c) 2000 Glenn Randers-Pehrson
 and are distributed according to the same disclaimer and license as libpng-1.0.6
 with the following individuals added to the list of Contributing Authors
@@ -99,4 +99,4 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-September 1, 2001
+October 19, 2001

README

-README for libpng 1.2.0 - September 1, 2001 (shared library 2.1)
+README for libpng 1.2.1beta1 - October 19, 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.
@@ -187,9 +187,9 @@ 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.2.1.2.0)
+                            (gcc, creates libpng.so.2.1.2.1beta1)
        makefile.gcmmx   =>  Linux/ELF makefile (gcc, creates
-                            libpng.so.2.1.2.0, uses assembler code
+                            libpng.so.2.1.2.1beta1, 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
@@ -206,10 +206,10 @@ Files in this distribution:
        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.2.1.2.0)
+       makefile.sggcc   =>  Silicon Graphics (gcc, creates libpng.so.2.1.2.1beta1)
        makefile.sunos   =>  Sun makefile
        makefile.solaris =>  Solaris 2.X makefile
-                            (gcc, creates libpng.so.2.1.2.0)
+                            (gcc, creates libpng.so.2.1.2.1beta1)
        makefile.sco     =>  For SCO OSr5  ELF and Unixware 7 with Native cc
        makefile.mips    =>  MIPS makefile
        makefile.acorn   =>  Acorn makefile

Y2KINFO

    Y2K compliance in libpng:
    =========================
 
-      September 1, 2001
+      October 19, 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 1.2.0 are Y2K compliant.  It is my belief that earlier
+      upward through 1.2.1beta1 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

 echo "
-  There is no \"configure\" script for Libpng-1.2.0.  Instead, please
+  There is no \"configure\" script for Libpng-1.2.1beta1.  Instead, please
   copy the appropriate makefile for your system from the \"scripts\"
   directory.  Read the INSTALL file for more details.
 "

contrib/pngminus/makefile.std

 # Makefile for PngMinus (png2pnm and pnm2png)
 # Linux / Unix
 
-CC=cc -O
-LD=cc -O
-#CC=gcc -O
-#LD=gcc -O
-LB=ar
-RM=rm
-CP=cp
-
-PNGPATH = /usr/local
-PNGINC = $(PNGPATH)/include
-#PNGLIB = $(PNGPATH)/lib -lpng
-PNGLIB = $(PNGPATH)/lib/libpng.a
-
-ZPATH = /usr/local
-ZINC = $(ZPATH)/include
-#ZLIB = $(ZPATH)/lib -lz
-ZLIB = $(ZPATH)/lib/libz.a
-
-CCFLAGS=-I$(PNGINC) -I$(ZINC)
-LDFLAGS=-L$(PNGLIB) -L$(ZLIB)
+#CC=cc
+CC=gcc
+LD=$(CC)
+
+RM=rm -f
+
+#PNGPATH = /usr/local
+#PNGINC = -I$(PNGPATH)/include
+#PNGLIB = -L$(PNGPATH)/lib -lpng
+#PNGLIBS = $(PNGPATH)/lib/libpng.a
+PNGINC = -I../..
+PNGLIB = -L../.. -lpng
+PNGLIBS = ../../libpng.a
+
+#ZPATH = /usr/local
+#ZINC = -I$(ZPATH)/include
+#ZLIB = -L$(ZPATH)/lib -lz
+#ZLIBS = $(ZPATH)/lib/libz.a
+ZINC = -I../../../zlib
+ZLIB = -L../../../zlib -lz
+ZLIBS = ../../../zlib/libz.a
+
+CFLAGS=-O3 $(PNGINC) $(ZINC)
+LDFLAGS=$(PNGLIB) $(ZLIB)
+LDFLAGSS=$(PNGLIBS) $(ZLIBS)
 C=.c
 O=.o
 L=.a
@@ -28,25 +33,33 @@ E=
 
 # dependencies
 
-all: png2pnm$(E) pnm2png$(E)
+#all: png2pnm$(E) pnm2png$(E)
+all: png2pnm$(E) pnm2png$(E) png2pnm-static$(E) pnm2png-static$(E)
 
 png2pnm$(O): png2pnm$(C)
-	$(CC) -c $(CCFLAGS) png2pnm$(C)
+	$(CC) -c $(CFLAGS) png2pnm$(C)
 
 png2pnm$(E): png2pnm$(O)
-	$(LD) -o png2pnm$(E) png2pnm$(O) $(LDFLAGS) -lpng -lz -lm
+	$(LD) -o png2pnm$(E) png2pnm$(O) $(LDFLAGS) -lm
+
+png2pnm-static$(E): png2pnm$(O)
+	$(LD) -o png2pnm-static$(E) png2pnm$(O) $(LDFLAGSS) -lm
 
 pnm2png$(O): pnm2png$(C)
-	$(CC) -c $(CCFLAGS) pnm2png$(C)
+	$(CC) -c $(CFLAGS) pnm2png$(C)
 
 pnm2png$(E): pnm2png$(O)
-	$(LD) -o pnm2png$(E) pnm2png$(O) $(LDFLAGS) -lpng -lz -lm
+	$(LD) -o pnm2png$(E) pnm2png$(O) $(LDFLAGS) -lm
+
+pnm2png-static$(E): pnm2png$(O)
+	$(LD) -o pnm2png-static$(E) pnm2png$(O) $(LDFLAGSS) -lm
 
 clean:
 	$(RM) png2pnm$(O)
 	$(RM) pnm2png$(O)
 	$(RM) png2pnm$(E)
 	$(RM) pnm2png$(E)
+	$(RM) png2pnm-static$(E)
+	$(RM) pnm2png-static$(E)
 
 # End of makefile for png2pnm / pnm2png
-

example.c

@@ -480,21 +480,47 @@ info_callback(png_structp png_ptr, png_infop info)
 row_callback(png_structp png_ptr, png_bytep new_row,
    png_uint_32 row_num, int pass)
 {
-/* this function is called for every row in the image.  If the
- * image is interlacing, and you turned on the interlace handler,
+/*
+ * This function is called for every row in the image.  If the
+ * image is interlaced, and you turned on the interlace handler,
  * this function will be called for every row in every pass.
- * Some of these rows will not be changed from the previous pass.
- * When the row is not changed, the new_row variable will be NULL.
+ *
+ * In this function you will receive a pointer to new row data from
+ * libpng called new_row that is to replace a corresponding row (of
+ * the same data format) in a buffer allocated by your application.
+ * 
+ * The new row data pointer new_row may be NULL, indicating there is
+ * no new data to be replaced (in cases of interlace loading).
+ * 
+ * If new_row is not NULL then you need to call
+ * png_progressive_combine_row() to replace the corresponding row as
+ * shown below:
+ */
+   /* Check if row_num is in bounds. */
+   if((row_num >= 0) && (row_num < height))
+   {
+     /* Get pointer to corresponding row in our
+      * PNG read buffer.
+      */
+     png_bytep old_row = ((png_bytep *)our_data)[row_num];
+
+     /* If both rows are allocated then copy the new row
+      * data to the corresponding row data.
+      */
+     if((old_row != NULL) && (new_row != NULL))
+     png_progressive_combine_row(png_ptr, old_row, new_row);
+   }
+/*
  * The rows and passes are called in order, so you don't really
  * need the row_num and pass, but I'm supplying them because it
  * may make your life easier.
  *
  * For the non-NULL rows of interlaced images, you must call
- * png_progressive_combine_row() passing in the 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
- * can just do this for all cases:
+ * png_progressive_combine_row() passing in the new row and the
+ * old row, as demonstrated above.  You can call this function for
+ * NULL rows (it will just return) and for non-interlaced images
+ * (it just does the png_memcpy for you) if it will make the code
+ * easier.  Thus, you can just do this for all cases:
  */
 
    png_progressive_combine_row(png_ptr, old_row, new_row);
@@ -503,8 +529,8 @@ row_callback(png_structp png_ptr, png_bytep new_row,
  * that the first pass (pass == 0 really) will completely cover
  * the old row, so the rows do not have to be initialized.  After
  * the first pass (and only for interlaced images), you will have
- * to pass the current row, and the function will combine the
- * old row and the new row.
+ * to pass the current row as new_row, and the function will combine
+ * the old row and the new row.
  */
 }
 

libpng.3

-.TH LIBPNG 3 "September 1, 2001"
+.TH LIBPNG 3 "October 19, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.1beta1
 .SH SYNOPSIS
 \fI\fB
 
@@ -787,7 +787,7 @@ 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 1.2.0 - September 1, 2001
+ libpng version 1.2.1beta1 - October 19, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -3635,13 +3635,13 @@ application:
 
 .SH IX. Y2K Compliance in libpng
 
-September 1, 2001
+October 19, 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 1.2.0 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.1beta1 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
@@ -3758,7 +3758,10 @@ the first widely used release:
  1.0.12               2    10012  2.1.0.12
  1.1.0a-f             -    10100  2.1.1.0a-f abandoned
  1.2.0beta1-2         2    10200  2.1.2.0beta1-2
- 1.2.0beta3-4         3    10200  3.1.2.0beta3-4
+ 1.2.0beta3-5         3    10200  3.1.2.0beta3-5
+ 1.2.0rc1             3    10200  3.1.2.0rc1
+ 1.2.0                3    10200  3.1.2.0
+ 1.2.1beta1           3    10201  3.1.2.1beta1
 
 Henceforth the source version will match the shared-library minor
 and patch numbers; the shared-library major version number will be
@@ -3816,7 +3819,7 @@ possible without all of you.
 
 Thanks to Frank J. T. Wojcik for helping with the documentation.
 
-Libpng version 1.2.0 - September 1, 2001:
+Libpng version 1.2.1beta1 - October 19, 2001:
 Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
 Currently maintained by Glenn Randers-Pehrson (randeg@alum.rpi.edu).
 
@@ -3833,7 +3836,7 @@ 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  1.2.0, September 1, 2001, are
+libpng versions 1.0.7, July 1, 2000, through  1.2.1beta1, October 19, 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
@@ -3925,7 +3928,7 @@ certification mark of the Open Source Initiative.
 
 Glenn Randers-Pehrson
 randeg@alum.rpi.edu
-September 1, 2001
+October 19, 2001
 
 .\" end of man page
 

libpng.txt

 libpng.txt - A description on how to use and modify libpng
 
- libpng version 1.2.0 - September 1, 2001
+ libpng version 1.2.1beta1 - October 19, 2001
  Updated and distributed by Glenn Randers-Pehrson
  <randeg@alum.rpi.edu>
  Copyright (c) 1998-2001 Glenn Randers-Pehrson
@@ -2848,13 +2848,13 @@ application:
 
 IX. Y2K Compliance in libpng
 
-September 1, 2001
+October 19, 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 1.2.0 are Y2K compliant.  It is my belief that earlier
+upward through 1.2.1beta1 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

-.TH LIBPNGPF 3 "September 1, 2001"
+.TH LIBPNGPF 3 "October 19, 2001"
 .SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.2.0
+libpng \- Portable Network Graphics (PNG) Reference Library 1.2.1beta1
 (private functions)
 .SH SYNOPSIS
 \fB#include <png.h>\fP

png.5

-.TH PNG 5 "September 1, 2001"
+.TH PNG 5 "October 19, 2001"
 .SH NAME
 png \- Portable Network Graphics (PNG) format
 .SH DESCRIPTION

png.c

 
 /* png.c - location for general purpose libpng functions
  *
- * libpng version 1.2.0 - September 1, 2001
+ * libpng version 1.2.1beta1 - October 19, 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_2_0 Your_png_h_is_not_version_1_2_0;
+typedef version_1_2_1beta1 Your_png_h_is_not_version_1_2_1beta1;
 
 /* 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] = "1.2.0";
+const char png_libpng_ver[18] = "1.2.1beta1";
 
 /* png_sig was changed to a function in version 1.0.5c */
 /* Place to hold the signature string for a PNG file. */
@@ -646,7 +646,7 @@ 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 1.2.0 - September 1, 2001\n\
+   return ((png_charp) "\n libpng version 1.2.1beta1 - October 19, 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 +664,8 @@ 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) "1.2.0");
-   return((png_charp) "1.2.0");
+      return((png_charp) "1.2.1beta1");
+   return((png_charp) "1.2.1beta1");
 }
 
 png_charp PNGAPI
@@ -715,7 +715,7 @@ png_uint_32 PNGAPI
 png_access_version_number(void)
 {
    /* Version of *.c files used when building libpng */
-   return((png_uint_32) 10200L);
+   return((png_uint_32) 10201L);
 }
 
 

png.h

 
 /* png.h - header file for PNG reference library
  *
- * libpng version 1.2.0 - September 1, 2001
+ * libpng version 1.2.1beta1 - October 19, 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 1.2.0 - September 1, 2001: Glenn
+ *  libpng versions 0.97, January 1998, through 1.2.1beta1 - October 19, 2001: Glenn
  *  See also "Contributing Authors", below.
  *
  * Note about libpng version numbers:
@@ -75,7 +75,10 @@
  *    1.0.12                   2    10012  2.1.0.12
  *    1.1.0a-f                 -    10100  2.1.1.0a-f (branch abandoned)
  *    1.2.0beta1-2             2    10200  2.1.2.0beta1-2
- *    1.2.0beta3-4             3    10200  3.1.2.0beta3-4
+ *    1.2.0beta3-5             3    10200  3.1.2.0beta3-5
+ *    1.2.0rc1                 3    10200  3.1.2.0rc1
+ *    1.2.0                    3    10200  3.1.2.0
+ *    1.2.1beta1               3    10201  3.1.2.1beta1
  *
  *    Henceforth the source version will match the shared-library major
  *    and minor numbers; the shared-library major version number will be
@@ -105,7 +108,7 @@
  * If you modify libpng you may insert additional notices immediately following
  * this sentence.
  *
- * libpng versions 1.0.7, July 1, 2000, through  1.2.0, September 1, 2001, are
+ * libpng versions 1.0.7, July 1, 2000, through  1.2.1beta1, October 19, 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
@@ -210,13 +213,13 @@
  * Y2K compliance in libpng:
  * =========================
  *
- *    September 1, 2001
+ *    October 19, 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 1.2.0 are Y2K compliant.  It is my belief that earlier
+ *    upward through 1.2.1beta1 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
@@ -272,7 +275,7 @@
  */
 
 /* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.2.0"
+#define PNG_LIBPNG_VER_STRING "1.2.1beta1"
 
 #define PNG_LIBPNG_VER_SONUM   3
 #define PNG_LIBPNG_VER_DLLNUM  %DLLNUM%
@@ -280,11 +283,11 @@
 /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
 #define PNG_LIBPNG_VER_MAJOR   1
 #define PNG_LIBPNG_VER_MINOR   2
-#define PNG_LIBPNG_VER_RELEASE 0
+#define PNG_LIBPNG_VER_RELEASE 1
 /* This should match the numeric part of the final component of
  * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
 
-#define PNG_LIBPNG_VER_BUILD  0
+#define PNG_LIBPNG_VER_BUILD  1
 
 #define PNG_LIBPNG_BUILD_ALPHA    1
 #define PNG_LIBPNG_BUILD_BETA     2
@@ -292,14 +295,14 @@
 #define PNG_LIBPNG_BUILD_STABLE   4
 #define PNG_LIBPNG_BUILD_TYPEMASK 7
 #define PNG_LIBPNG_BUILD_PATCH    8 /* Can be OR'ed with STABLE only */
-#define PNG_LIBPNG_BUILD_TYPE 4
+#define PNG_LIBPNG_BUILD_TYPE 2
 
 /* Careful here.  At one time, Guy wanted to use 082, but that would be octal.
  * We must not include leading zeros.
  * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
  * version 1.0.0 was mis-numbered 100 instead of 10000).  From
  * version 1.0.1 it's    xxyyzz, where x=major, y=minor, z=release */
-#define PNG_LIBPNG_VER 10200 /* 1.2.0 */
+#define PNG_LIBPNG_VER 10201 /* 1.2.1 */
 
 #ifndef PNG_VERSION_INFO_ONLY
 
@@ -1044,9 +1047,9 @@ struct png_struct_def
    float background_gamma;
 #  endif
    png_color_16 background;   /* background color in screen gamma space */
-#  if defined(PNG_READ_GAMMA_SUPPORTED)
-     png_color_16 background_1; /* background normalized to gamma 1.0 */
-#  endif /* PNG_READ_GAMMA && PNG_bKGD_SUPPORTED */
+#if defined(PNG_READ_GAMMA_SUPPORTED)
+   png_color_16 background_1; /* background normalized to gamma 1.0 */
+#endif
 #endif /* PNG_bKGD_SUPPORTED */
 
 #if defined(PNG_WRITE_FLUSH_SUPPORTED)
@@ -1214,9 +1217,9 @@ struct png_struct_def
 
 
 /* This prevents a compiler error in png_get_copyright() in png.c if png.c
-   and png.h are both at version 1.2.0
+   and png.h are both at version 1.2.1beta1
  */
-typedef png_structp version_1_2_0;
+typedef png_structp version_1_2_1beta1;
 
 typedef png_struct FAR * FAR * png_structpp;
 
@@ -2333,7 +2336,7 @@ 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 1.2.0 - September 1, 2001 (header)\n"
+   " libpng version 1.2.1beta1 - October 19, 2001 (header)\n"
 
 #ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
 /* With these routines we avoid an integer divide, which will be slower on
@@ -2947,11 +2950,14 @@ PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row,
 
 #if defined(PNG_READ_BACKGROUND_SUPPORTED)
 PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row,
-   png_color_16p trans_values, png_color_16p background,
-   png_color_16p background_1,
+   png_color_16p trans_values, png_color_16p background
+#if defined(PNG_READ_GAMMA_SUPPORTED)
+   , png_color_16p background_1,
    png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
    png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
-   png_uint_16pp gamma_16_to_1, int gamma_shift));
+   png_uint_16pp gamma_16_to_1, int gamma_shift
+#endif
+   ));
 #endif
 
 #if defined(PNG_READ_GAMMA_SUPPORTED)

pngasmrd.h

 /* pngasmrd.h - assembler version of utilities to read a PNG file
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 2001
  * For conditions of distribution and use, see copyright notice in png.h
  * Copyright (c) 2001 Glenn Randers-Pehrson
  *

pngconf.h

 /* pngconf.h - machine configurable file for libpng
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)
@@ -399,10 +399,10 @@
  */
 
 #ifndef PNG_iTXt_SUPPORTED
-#  ifndef PNG_READ_iTXt_SUPPORTED
+#  if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt)
 #    define PNG_NO_READ_iTXt
 #  endif
-#  ifndef PNG_WRITE_iTXt_SUPPORTED
+#  if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt)
 #    define PNG_NO_WRITE_iTXt
 #  endif
 #endif
@@ -726,8 +726,12 @@
 #  define PNG_iCCP_SUPPORTED
 #endif
 #ifndef PNG_NO_READ_iTXt
-#  define PNG_READ_iTXt_SUPPORTED
-#  define PNG_iTXt_SUPPORTED
+#  ifndef PNG_READ_iTXt_SUPPORTED
+#    define PNG_READ_iTXt_SUPPORTED
+#  endif
+#  ifndef PNG_iTXt_SUPPORTED
+#    define PNG_iTXt_SUPPORTED
+#  endif
 #endif
 #ifndef PNG_NO_READ_oFFs
 #  define PNG_READ_oFFs_SUPPORTED
@@ -842,7 +846,9 @@
 #  endif
 #endif
 #ifndef PNG_NO_WRITE_iTXt
-#  define PNG_WRITE_iTXt_SUPPORTED
+#  ifndef PNG_WRITE_iTXt_SUPPORTED
+#    define PNG_WRITE_iTXt_SUPPORTED
+#  endif
 #  ifndef PNG_iTXt_SUPPORTED
 #    define PNG_iTXt_SUPPORTED
 #  endif

pngerror.c

 
 /* pngerror.c - stub functions for i/o and memory allocation
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

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 1.2.0 - September 1, 2001
+ * libpng version 1.2.1beta1 - October 19, 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

pngget.c

 
 /* pngget.c - retrieval of values from info struct
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngmem.c

 
 /* pngmem.c - stub functions for memory allocation
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngpread.c

 
 /* pngpread.c - read a png file in push mode
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngread.c

 
 /* pngread.c - read a PNG file
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)
@@ -769,7 +769,7 @@ 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 1.2.0
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.1beta1
  */
 
 void PNGAPI
@@ -818,7 +818,7 @@ 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 1.2.0
+ * [*] png_handle_alpha() does not exist yet, as of libpng version 1.2.1beta1
  */
 void PNGAPI
 png_read_image(png_structp png_ptr, png_bytepp image)

pngrio.c

 
 /* pngrio.c - functions for data input
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngrtran.c

 
 /* pngrtran.c - transforms the data in a row for PNG readers
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)
@@ -742,7 +742,7 @@ png_init_read_transformations(png_structp png_ptr)
    }
 #endif
 
-#if defined(PNG_READ_BACKGROUND_SUPPORTED)
+#if defined(PNG_READ_BACKGROUND_SUPPORTED) && defined(PNG_READ_GAMMA_SUPPORTED)
    png_ptr->background_1 = png_ptr->background;
 #endif
 #if defined(PNG_READ_GAMMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED)
@@ -901,7 +901,7 @@ png_init_read_transformations(png_structp png_ptr)
       }
       else
       /* transformation does not include PNG_BACKGROUND */
-#endif
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
       if (color_type == PNG_COLOR_TYPE_PALETTE)
       {
          png_colorp palette = png_ptr->palette;
@@ -919,7 +919,7 @@ png_init_read_transformations(png_structp png_ptr)
 #if defined(PNG_READ_BACKGROUND_SUPPORTED)
    else
 #endif
-#endif
+#endif /* PNG_READ_GAMMA_SUPPORTED && PNG_FLOATING_POINT_SUPPORTED */
 #if defined(PNG_READ_BACKGROUND_SUPPORTED)
    /* No GAMMA transformation */
    if ((png_ptr->transformations & PNG_BACKGROUND) &&
@@ -952,7 +952,7 @@ png_init_read_transformations(png_structp png_ptr)
          }
       }
    }
-#endif
+#endif /* PNG_READ_BACKGROUND_SUPPORTED */
 
 #if defined(PNG_READ_SHIFT_SUPPORTED)
    if ((png_ptr->transformations & PNG_SHIFT) &&
@@ -977,7 +977,7 @@ png_init_read_transformations(png_structp png_ptr)
          png_ptr->palette[i].blue >>= sb;
       }
    }
-#endif
+#endif  /* PNG_READ_SHIFT_SUPPORTED */
  }
 #if !defined(PNG_READ_GAMMA_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED) \
  && !defined(PNG_READ_BACKGROUND_SUPPORTED)
@@ -1227,12 +1227,15 @@ From Andreas Dilger e-mail to png-implement, 26 March 1998:
       ((png_ptr->num_trans != 0 ) ||
       (png_ptr->color_type & PNG_COLOR_MASK_ALPHA)))
       png_do_background(&(png_ptr->row_info), png_ptr->row_buf + 1,
-         &(png_ptr->trans_values), &(png_ptr->background),
-         &(png_ptr->background_1),
+         &(png_ptr->trans_values), &(png_ptr->background)
+#if defined(PNG_READ_GAMMA_SUPPORTED)
+         , &(png_ptr->background_1),
          png_ptr->gamma_table, png_ptr->gamma_from_1,
          png_ptr->gamma_to_1, png_ptr->gamma_16_table,
          png_ptr->gamma_16_from_1, png_ptr->gamma_16_to_1,
-         png_ptr->gamma_shift);
+         png_ptr->gamma_shift
+#endif
+);
 #endif
 
 #if defined(PNG_READ_GAMMA_SUPPORTED)
@@ -2545,11 +2548,14 @@ png_correct_palette(png_structp png_ptr, png_colorp palette,
  */
 void /* PRIVATE */
 png_do_background(png_row_infop row_info, png_bytep row,
-   png_color_16p trans_values, png_color_16p background,
-   png_color_16p background_1,
+   png_color_16p trans_values, png_color_16p background
+#if defined(PNG_READ_GAMMA_SUPPORTED)
+   , png_color_16p background_1,
    png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1,
    png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1,
-   png_uint_16pp gamma_16_to_1, int gamma_shift)
+   png_uint_16pp gamma_16_to_1, int gamma_shift
+#endif
+   )
 {
    png_bytep sp, dp;
    png_uint_32 i;
@@ -2932,6 +2938,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                      {
                         *dp = *sp;
                      }
+#if defined(PNG_READ_GAMMA_SUPPORTED)
                      else if (a == 0)
                      {
                         *dp = (png_byte)background->gray;
@@ -2940,6 +2947,9 @@ png_do_background(png_row_infop row_info, png_bytep row,
                      {
                         png_composite(*dp, *sp, a, background_1->gray);
                      }
+#else
+                     *dp = (png_byte)background->gray;
+#endif
                   }
                }
             }
@@ -2963,12 +2973,17 @@ png_do_background(png_row_infop row_info, png_bytep row,
                         *dp = (png_byte)((v >> 8) & 0xff);
                         *(dp + 1) = (png_byte)(v & 0xff);
                      }
+#if defined(PNG_READ_GAMMA_SUPPORTED)
                      else if (a == 0)
+#else
+                     else
+#endif
                      {
                         /* background is already in screen gamma */
                         *dp = (png_byte)((background->gray >> 8) & 0xff);
                         *(dp + 1) = (png_byte)(background->gray & 0xff);
                      }
+#if defined(PNG_READ_GAMMA_SUPPORTED)
                      else
                      {
                         png_uint_16 g, v, w;
@@ -2979,6 +2994,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                         *dp = (png_byte)((w >> 8) & 0xff);
                         *(dp + 1) = (png_byte)(w & 0xff);
                      }
+#endif
                   }
                }
                else
@@ -2993,11 +3009,16 @@ png_do_background(png_row_infop row_info, png_bytep row,
                      {
                         png_memcpy(dp, sp, 2);
                      }
+#if defined(PNG_READ_GAMMA_SUPPORTED)
                      else if (a == 0)
+#else
+                     else
+#endif
                      {
                         *dp = (png_byte)((background->gray >> 8) & 0xff);
                         *(dp + 1) = (png_byte)(background->gray & 0xff);
                      }
+#if defined(PNG_READ_GAMMA_SUPPORTED)
                      else
                      {
                         png_uint_16 g, v;
@@ -3007,6 +3028,7 @@ png_do_background(png_row_infop row_info, png_bytep row,
                         *dp = (png_byte)((v >> 8) & 0xff);
                         *(dp + 1) = (png_byte)(v & 0xff);
                      }
+#endif
                   }
                }
             }

pngrutil.c

 
 /* pngrutil.c - utilities to read a PNG file
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngset.c

 
 /* pngset.c - storage of image information into info struct
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngtest.c

 
 /* pngtest.c - a simple test program to test libpng
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)
@@ -1510,4 +1510,4 @@ main(int argc, char *argv[])
 }
 
 /* Generate a compiler error if there is an old png.h in the search path. */
-typedef version_1_2_0 your_png_h_is_not_version_1_2_0;
+typedef version_1_2_1beta1 your_png_h_is_not_version_1_2_1beta1;

pngtrans.c

 
 /* pngtrans.c - transforms the data in a row (used by both readers and writers)
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngvcrd.c

@@ -2,7 +2,7 @@
  *
  * For Intel x86 CPU and Microsoft Visual C++ compiler
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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

pngwio.c

 
 /* pngwio.c - functions for data output
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngwrite.c

 
 /* pngwrite.c - general routines to write a PNG file
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngwtran.c

 
 /* pngwtran.c - transforms the data in a row for PNG writers
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

pngwutil.c

 
 /* pngwutil.c - utilities to write a PNG file
  *
- * libpng 1.2.0 - September 1, 2001
+ * libpng 1.2.1beta1 - October 19, 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)

projects/msvc/README.txt

 Microsoft Developer Studio Build File, Format Version 6.00 for
-libpng 1.2.0 (September 1, 2001) and zlib
+libpng 1.2.1beta1 (October 19, 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 1.2.0
+;Version 1.2.1beta1
   png_build_grayscale_palette  @1
   png_check_sig        @2
   png_chunk_error      @3

projects/netware.txt

 A set of project files is available for Netware.  Get
-libpng-1.2.0-project-netware.zip from a libpng distribution
+libpng-1.2.1beta1-project-netware.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.0-project-netware.zip"
+"unzip -a libpng-1.2.1beta1-project-netware.zip"

projects/wince.txt

 A set of project files is available for WinCE.  Get
-libpng-1.2.0-project-wince.zip from a libpng distribution
+libpng-1.2.1beta1-project-wince.zip from a libpng distribution
 site such as http://libpng.sourceforge.net
 
 Put the zip file in this directory (projects) and then run
-"unzip -a libpng-1.2.0-project-wince.zip"
+"unzip -a libpng-1.2.1beta1-project-wince.zip"

scripts/makefile.aix

@@ -18,7 +18,7 @@ RM = rm -f
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 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 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 ALIGN=

scripts/makefile.cygwin

@@ -39,8 +39,8 @@ CFLAGS=-I$(ZLIBINC) -Wall -O3 $(ALIGN) -funroll-loops \
 # have to change it.
 PNGMAJ = 3
 #PNGDLL = $3
-PNGMIN = 1.2.0
-PNGMIN_BASE = 1.2.0
+PNGMIN = 1.2.1beta1
+PNGMIN_BASE = 1.2.1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 SHAREDLIB=cygpng$(PNGDLL).dll

scripts/makefile.darwin

+# makefile for libpng on Darwin / Mac OS X
+# Copyright (C) 2001 Christoph Pfisterer
+# derived from makefile.linux:
+#  Copyright (C) 1998, 1999 Greg Roelofs
+#  Copyright (C) 1996, 1997 Andreas Dilger
+# For conditions of distribution and use, see copyright notice in png.h
+
+# where "make install" puts libpng.a, libpng.dylib, png.h and pngconf.h
+prefix=/usr/local
+
+# Where the zlib library and include files are located
+#ZLIBLIB=/usr/local/lib
+#ZLIBINC=/usr/local/include
+ZLIBLIB=../zlib
+ZLIBINC=../zlib
+
+CC=cc
+CFLAGS=-I$(ZLIBINC) -Wall -O3 -funroll-loops
+LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
+
+#RANLIB=echo
+RANLIB=ranlib
+
+# read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
+# have to change it.
+PNGMAJ = 3
+PNGMIN = 1.2.1beta1
+PNGVER = $(PNGMAJ).$(PNGMIN)
+
+INCPATH=$(prefix)/include
+LIBPATH=$(prefix)/lib
+
+OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
+	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
+	pngwtran.o pngmem.o pngerror.o pngpread.o
+
+OBJSDLL = $(OBJS:.o=.pic.o)
+
+.SUFFIXES:      .c .o .pic.o
+
+.c.pic.o:
+	$(CC) -c $(CFLAGS) -fno-common -o $@ $*.c
+
+all: libpng.a libpng.dylib pngtest
+
+libpng.a: $(OBJS)
+	ar rc $@ $(OBJS)
+	$(RANLIB) $@
+
+libpng.dylib: libpng.$(PNGMAJ).dylib
+	ln -sf libpng.$(PNGMAJ).dylib libpng.dylib
+
+libpng.$(PNGMAJ).dylib: libpng.$(PNGVER).dylib
+	ln -sf libpng.$(PNGVER).dylib libpng.$(PNGMAJ).dylib
+
+libpng.$(PNGVER).dylib: $(OBJSDLL)
+	$(CC) -dynamiclib -undefined suppress \
+	 -install_name $(LIBPATH)/libpng.$(PNGMAJ).dylib \
+	 -current_version $(PNGMIN) -compatibility_version $(PNGMIN) \
+	 -o libpng.$(PNGVER).dylib \
+	 $(OBJSDLL) -L$(ZLIBLIB) -lz
+
+pngtest: pngtest.o libpng.dylib
+	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
+
+test: pngtest
+	./pngtest
+
+install: libpng.a libpng.dylib
+	-@if [ ! -d $(INCPATH)  ]; then mkdir $(INCPATH); fi
+	-@if [ ! -d $(LIBPATH) ]; then mkdir $(LIBPATH); fi
+	cp png.h pngconf.h $(INCPATH)
+	chmod 644 $(INCPATH)/png.h $(INCPATH)/pngconf.h
+	cp libpng.a libpng.$(PNGVER).dylib $(LIBPATH)
+	chmod 755 $(LIBPATH)/libpng.$(PNGVER).dylib
+	ranlib $(LIBPATH)/libpng.a
+	-@/bin/rm -f $(LIBPATH)/libpng.$(PNGMAJ).dylib $(LIBPATH)/libpng.dylib
+	(cd $(LIBPATH); ln -sf libpng.$(PNGVER).dylib libpng.$(PNGMAJ).dylib; \
+	 ln -sf libpng.$(PNGMAJ).dylib libpng.dylib)
+
+clean:
+	rm -f *.o libpng.a libpng.*dylib pngtest pngout.png
+
+DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
+writelock:
+	chmod a-w *.[ch35] $(DOCS) scripts/*
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o png.pic.o: png.h pngconf.h
+pngerror.o pngerror.pic.o: png.h pngconf.h
+pngrio.o pngrio.pic.o: png.h pngconf.h
+pngwio.o pngwio.pic.o: png.h pngconf.h
+pngmem.o pngmem.pic.o: png.h pngconf.h
+pngset.o pngset.pic.o: png.h pngconf.h
+pngget.o pngget.pic.o: png.h pngconf.h
+pngread.o pngread.pic.o: png.h pngconf.h
+pngrtran.o pngrtran.pic.o: png.h pngconf.h
+pngrutil.o pngrutil.pic.o: png.h pngconf.h
+pngtrans.o pngtrans.pic.o: png.h pngconf.h
+pngwrite.o pngwrite.pic.o: png.h pngconf.h
+pngwtran.o pngwtran.pic.o: png.h pngconf.h
+pngwutil.o pngwutil.pic.o: png.h pngconf.h
+pngpread.o pngpread.pic.o: png.h pngconf.h
+
+pngtest.o: png.h pngconf.h

scripts/makefile.dec

@@ -17,7 +17,7 @@ ZLIBINC=../zlib
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 CC=cc

scripts/makefile.gcmmx

@@ -55,7 +55,7 @@ RANLIB=ranlib
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 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 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 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 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 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 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.macosx

 # makefile for libpng, MACOS X
 # Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# Modified by Karin Kosina <kyrah@sim.no> 20011010:
+# build shared library (*.dylib)
 # For conditions of distribution and use, see copyright notice in png.h
 
 # where make install puts libpng.a and png.h
@@ -12,8 +14,16 @@ ZLIBLIB=../zlib
 ZLIBINC=../zlib
 
 CC=cc
-CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
+CFLAGS=-fno-common -I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
 LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz
+LDSHARED=cc -lz -dynamiclib -compatibility_version $(VER) -current_version $(VER)
+
+PNGMAJ = 3
+PNGMIN = 1.2.1beta1
+VER = $(PNGMAJ).$(PNGMIN)
+SHAREDLIB=libpng
+SHAREDLIB_POSTFIX=dylib
+libdir=$(prefix)/lib
 
 #RANLIB=echo
 RANLIB=ranlib
@@ -22,12 +32,17 @@ OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
 	pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
 	pngwtran.o pngmem.o pngerror.o pngpread.o
 
-all: libpng.a pngtest
+all: libpng.a pngtest shared
+
+shared: $(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX)
 
 libpng.a: $(OBJS)
 	ar rc $@  $(OBJS)
 	$(RANLIB) $@
 
+$(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX): $(OBJS)
+	$(LDSHARED) -o $@ $(OBJS)
+
 pngtest: pngtest.o libpng.a
 	$(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
 
@@ -44,8 +59,13 @@ install: libpng.a
 	cp libpng.a $(prefix)/lib
 	chmod 644 $(prefix)/lib/libpng.a
 
+install-shared: $(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX)
+	cp $(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX) $(libdir)
+	(cd $(libdir); \
+	ln -s $(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX) $(SHAREDLIB).$(SHAREDLIB_POSTFIX)) 
+
 clean:
-	rm -f *.o libpng.a pngtest pngout.png
+	rm -f *.o libpng.a pngtest pngout.png $(SHAREDLIB).$(VER).$(SHAREDLIB_POSTFIX) $(SHAREDLIB).$(SHAREDLIB_POSTFIX)
 
 DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
 writelock:

scripts/makefile.netbsd

@@ -11,7 +11,7 @@ INCSDIR=${LOCALBASE}/include
 
 LIB=png
 SHLIB_MAJOR= 3
-SHLIB_MINOR= 1.2.0
+SHLIB_MINOR= 1.2.1beta1
 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
@@ -20,12 +20,12 @@ MAN=	libpng.3 libpngpf.3 png.5
 
 CPPFLAGS+=-I${.CURDIR} -DPNG_USE_PNGGCCRD
 
-CPPFLAGS+=-DPNG_NO_ASSEMBLER_CODE
 # something like this for mmx assembler, but it core dumps for me at the moment
 # .if ${MACHINE_ARCH} == "i386"
+#   CPPFLAGS+=-DPNG_THREAD_UNSAFE_OK
 #   MKLINT= no
 # .else
-#   CPPFLAGS+=-DPNG_NO_ASSEMBLER_CODE
+    CPPFLAGS+=-DPNG_NO_ASSEMBLER_CODE
 # .endif
 
 CLEANFILES+=pngtest.o pngtest

scripts/makefile.sco

@@ -25,7 +25,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/makefile.sggcc

@@ -22,7 +22,7 @@ CFLAGS=$(ABI) -I$(ZLIBINC) -O2 $(WARNMORE) -fPIC -mabi=n32
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=CC $(ABI) -shared
 
-VER=1.2.0
+VER=1.2.1beta1
 # See "man dso" for info about shared objects
 SONUM=3
 LIBS=libpng.so.$(SONUM).$(VER)

scripts/makefile.sgi

@@ -27,7 +27,7 @@ CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -DPNG_USE_PNGGCCRD -DPNG_NO_ASSEMBLER_
 LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
 LDSHARED=cc $(ABI) -shared
 
-VER=1.2.0
+VER=1.2.1beta1
 # See "man dso" for info about shared objects
 SONUM=3
 SHAREDLIB=libpng.so

scripts/makefile.solaris

@@ -31,7 +31,7 @@ RANLIB=echo
 # read libpng.txt or png.h to see why PNGMAJ is 3.  You should not
 # have to change it.
 PNGMAJ = 3
-PNGMIN = 1.2.0
+PNGMIN = 1.2.1beta1
 PNGVER = $(PNGMAJ).$(PNGMIN)
 
 INCPATH=$(prefix)/include

scripts/pngdef.pas

@@ -7,8 +7,8 @@ unit pngdef;
 interface
 
 const
-  PNG_LIBPNG_VER_STRING = '1.2.0';
-  PNG_LIBPNG_VER        =  10200;
+  PNG_LIBPNG_VER_STRING = '1.2.1beta1';
+  PNG_LIBPNG_VER        =  10201;
 
 type
   png_uint_32 = Cardinal;

scripts/pngos2.def

@@ -2,7 +2,7 @@
 ; PNG.LIB module definition file for OS/2
 ;----------------------------------------
 
-; Version 1.2.0
+; Version 1.2.1beta1
 
 LIBRARY		PNG
 DESCRIPTION	"PNG image compression library for OS/2"