Initial release, cloned from NC353

.gitignore

+html/*
+attic/*
+/.project
+/.cproject
+/.pydevproject
+/.externalToolBuilders
+/.settings
+.directory
+generated*
+sysroots
+bitbake-logs
+/temp/

VERSION

+1.0 

run_bitbake.sh

+#!/bin/bash
+args="$@"
+while (( "$#" )); do
+  shift
+done
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+echo "Launching bitbake $args"
+cd $DIR/../../poky
+. ./oe-init-build-env
+bitbake $args  | sed -u 's@| @@'
+exit 0

src/Makefile

+AXIS_USABLE_LIBS = UCLIBC GLIBC
+AXIS_AUTO_DEPEND = yes
+include $(AXIS_TOP_DIR)/tools/build/Rules.axis
+
+# makefile for libpng using gcc (generic, static library)
+# Copyright (C) 2000 Cosmin Truta
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# For conditions of distribution and use, see copyright notice in png.h
+
+# Location of the zlib library and include files
+#ZLIBINC = zlib
+#ZLIBLIB = zlib
+
+PNGINC = libpng
+PNGLIB = libpng
+
+
+#ZLIB = zlib
+PNGLIB  = libpng
+INCDIR    = $(AXIS_KERNEL_DIR)/include
+
+INSTDIR   = $(prefix)/usr/local/bin
+CGIDIR    = $(prefix)/usr/html
+INSTMODE  = 0755
+INSTDOCMODE  = 0644
+
+INSTOWNER = root
+INSTGROUP = root
+
+#PGMNAME = pnghist
+
+# Compiler, linker, lib and other tools
+# CC = gcc
+LD = $(CC)
+LN= $(CC)
+AR = ar rcs
+RANLIB = ranlib
+RM = rm -f
+
+CDEBUG = -g -DPNG_DEBUG=5
+LDDEBUG =
+CRELEASE = -O2
+LDRELEASE = -s
+
+CFLAGS   += -Wall -g -I$(INCDIR) -I$(AXIS_KERNEL_DIR)/include
+LDFLAGS  += -L$(LIBDIR)
+
+CFLAGS   += -Wall -g -I$(INCDIR) -I$(PNGINC) -I$(AXIS_KERNEL_DIR)/include
+LDFLAGS  += -L. -L$(PNGLIB) -L$(LIBDIR) -lpng -lz -lm
+
+ifndef UCLIBC
+# -lm - to use math library
+LDLIBS = -lcrypt -lm
+endif
+
+
+# Variables
+PROGS=pnghist.cgi
+PNGSRCS = $(PNGLIB)/png.c $(PNGLIB)/pngerror.c $(PNGLIB)/pngget.c $(PNGLIB)/pngmem.c $(PNGLIB)/pngpread.c \
+	$(PNGLIB)/pngread.c $(PNGLIB)/pngrio.c $(PNGLIB)/pngrtran.c $(PNGLIB)/pngrutil.c $(PNGLIB)/pngset.c \
+	$(PNGLIB)/pngtrans.c $(PNGLIB)/pngwio.c $(PNGLIB)/pngwrite.c $(PNGLIB)/pngwtran.c $(PNGLIB)/pngwutil.c
+PNGOBJS = $(PNGLIB)/png.o $(PNGLIB)/pngerror.o $(PNGLIB)/pngget.o $(PNGLIB)/pngmem.o $(PNGLIB)/pngpread.o \
+	$(PNGLIB)/pngread.o $(PNGLIB)/pngrio.o $(PNGLIB)/pngrtran.o $(PNGLIB)/pngrutil.o $(PNGLIB)/pngset.o \
+	$(PNGLIB)/pngtrans.o $(PNGLIB)/pngwio.o $(PNGLIB)/pngwrite.o $(PNGLIB)/pngwtran.o $(PNGLIB)/pngwutil.o
+
+SRCS = pnghist.c $(PNGSRCS) $(ZSRCS)
+OBJS = pnghist.o $(PNGOBJS) $(ZOBJS)
+
+#LIBS = $(PNGLIB)/libpng.a $(ZLIB)/libz.a  
+LIBS = $(PNGLIB)/libpng.a
+# Targets
+#all: dependency $(PROGS) $(PNGLIB)/libpng.a $(ZLIB)/libz.a
+all: dependency $(PROGS)
+
+$(PNGLIB)/libpng.a: $(PNGOBJS)
+	$(AR) $@ $(PNGOBJS)
+	$(RANLIB) $@
+
+#$(ZLIB)/libz.a: $(ZOBJS) 
+#	$(AR) $@ $(ZOBJS) 
+#	-@ ($(RANLIB) $@ || true) >/dev/null 2>&1
+   
+pnghist.cgi: pnghist.o $(PNGLIB)/libpng.a
+	$(LD) $^ $(LDLIBS) -o $@ $(LDFLAGS)
+	cris-strip -s $@
+   
+install: $(LIBS) $(PROGS)
+	$(INSTALL) -d $(INSTDIR)
+	$(INSTALL) -m $(INSTMODE) -o $(INSTOWNER) -g $(INSTGROUP) pnghist.cgi $(CGIDIR)
+
+clean:
+	$(RM) $(PNGLIB)/*.o $(PNGLIB)/*~ $(PNGLIB)/*.bak $(PNGLIB)/libpng.a $(PNGLIB)/pngtest $(PNGLIB)/pngout.png \
+	*.o *~ *.bak dependency  $(PROGS)
+
+configsubs:

src/libpng/ANNOUNCE

+
+Libpng 1.2.8 - December 3, 2004
+
+This is a public release of libpng, intended for use in production codes.
+
+Changes since the last public release (1.2.7):
+
+  Fixed bug in png_text_compress() that would fail to complete a large block.
+  Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
+    strip alpha operation in png_do_strip_filler().
+  Added PNG_1_2_X definition in pngconf.h
+  #ifdef out png_info_init in png.c and png_read_init in pngread.c (as of 1.3.0)
+  Reduce color_type to a nonalpha type after strip alpha operation in
+    png_do_strip_filler().
+  Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM
+  Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin).
+  Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin).
+  Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection
+    of data type in deflate (Cosmin).
+  Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of
+    PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
+  Despammed mailing addresses by masking "@" with "at".
+  Added scripts/makefile.elf with supporting code in pngconf.h for symbol
+    versioning (John Bowler).
+  Added projects/visualc71 (Simon-pierre).
+
+Send comments/corrections/commendations to
+png-implement at ccrc.wustl.edu (subscription required; write to
+majordomo at ccrc.wustl.edu with "subscribe png-implement" in the message)
+or to glennrp at users.sourceforge.net
+
+Glenn R-P

src/libpng/LICENSE

+
+This copy of the libpng notices is provided for your convenience.  In case of
+any discrepancy between this copy and the notices in the file png.h that is
+included in the libpng distribution, the latter shall prevail.
+
+COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
+
+If you modify libpng you may insert additional notices immediately following
+this sentence.
+
+libpng version 1.2.6, December 3, 2004, is
+Copyright (c) 2004 Glenn Randers-Pehrson, and is
+distributed according to the same disclaimer and license as libpng-1.2.5
+with the following individual added to the list of Contributing Authors
+
+   Cosmin Truta
+
+libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
+Copyright (c) 2000-2002 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
+
+   Simon-Pierre Cadieux
+   Eric S. Raymond
+   Gilles Vollant
+
+and with the following additions to the disclaimer:
+
+   There is no warranty against interference with your enjoyment of the
+   library or against infringement.  There is no warranty that our
+   efforts or the library will fulfill any of your particular purposes
+   or needs.  This library is provided with all faults, and the entire
+   risk of satisfactory quality, performance, accuracy, and effort is with
+   the user.
+
+libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
+Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
+distributed according to the same disclaimer and license as libpng-0.96,
+with the following individuals added to the list of Contributing Authors:
+
+   Tom Lane
+   Glenn Randers-Pehrson
+   Willem van Schaik
+
+libpng versions 0.89, June 1996, through 0.96, May 1997, are
+Copyright (c) 1996, 1997 Andreas Dilger
+Distributed according to the same disclaimer and license as libpng-0.88,
+with the following individuals added to the list of Contributing Authors:
+
+   John Bowler
+   Kevin Bracey
+   Sam Bushell
+   Magnus Holmgren
+   Greg Roelofs
+   Tom Tanner
+
+libpng versions 0.5, May 1995, through 0.88, January 1996, are
+Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
+
+For the purposes of this copyright and license, "Contributing Authors"
+is defined as the following set of individuals:
+
+   Andreas Dilger
+   Dave Martindale
+   Guy Eric Schalnat
+   Paul Schmidt
+   Tim Wegner
+
+The PNG Reference Library is supplied "AS IS".  The Contributing Authors
+and Group 42, Inc. disclaim all warranties, expressed or implied,
+including, without limitation, the warranties of merchantability and of
+fitness for any purpose.  The Contributing Authors and Group 42, Inc.
+assume no liability for direct, indirect, incidental, special, exemplary,
+or consequential damages, which may result from the use of the PNG
+Reference Library, even if advised of the possibility of such damage.
+
+Permission is hereby granted to use, copy, modify, and distribute this
+source code, or portions hereof, for any purpose, without fee, subject
+to the following restrictions:
+
+1. The origin of this source code must not be misrepresented.
+
+2. Altered versions must be plainly marked as such and must not
+   be misrepresented as being the original source.
+
+3. This Copyright notice may not be removed or altered from any
+   source or altered source distribution.
+
+The Contributing Authors and Group 42, Inc. specifically permit, without
+fee, and encourage the use of this source code as a component to
+supporting the PNG file format in commercial products.  If you use this
+source code in a product, acknowledgment is not required but would be
+appreciated.
+
+
+A "png_get_copyright" function is available, for convenient use in "about"
+boxes and the like:
+
+   printf("%s",png_get_copyright(NULL));
+
+Also, the PNG logo (in PNG format, of course) is supplied in the
+files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
+
+Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
+certification mark of the Open Source Initiative.
+
+Glenn Randers-Pehrson
+glennrp at users.sourceforge.net
+December 3, 2004

src/libpng/Makefile

+AXIS_USABLE_LIBS = UCLIBC GLIBC
+include $(AXIS_TOP_DIR)/tools/build/Rules.axis
+
+# makefile for libpng using gcc (generic, static library)
+# Copyright (C) 2000 Cosmin Truta
+# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
+# For conditions of distribution and use, see copyright notice in png.h
+
+# Location of the zlib library and include files
+ZLIBINC = ../zlib
+ZLIBLIB = ../zlib
+INCDIR    = $(AXIS_KERNEL_DIR)/include
+
+INSTDIR   = $(prefix)/usr/local/bin
+INSTMODE  = 0755
+INSTDOCMODE  = 0644
+
+INSTOWNER = root
+INSTGROUP = root
+
+
+
+# Compiler, linker, lib and other tools
+# CC = gcc
+LD = $(CC)
+LN= $(CC)
+AR = ar rcs
+RANLIB = ranlib
+RM = rm -f
+
+CDEBUG = -g -DPNG_DEBUG=5
+LDDEBUG =
+CRELEASE = -O2
+LDRELEASE = -s
+#CFLAGS = -I$(INCDIR) -I$(ZLIBINC) -Wall $(CRELEASE)
+#LDFLAGS = -L. -L$(ZLIBLIB) -lpng -lz -lm $(LDRELEASE)
+
+CFLAGS   += -Wall -g -I$(INCDIR) -I$(ZLIBINC) -I$(AXIS_KERNEL_DIR)/include $(CRELEASE)
+LDFLAGS  += -L. -L$(ZLIBLIB) -L$(LIBDIR) -lpng -lz -lm $(LDRELEASE)
+
+ifndef UCLIBC
+# -lm - to use math library
+LDLIBS = -lcrypt -lm
+endif
+
+
+# Variables
+PROGS=pngtest
+DOCS=pngtest.png
+SRCS = png.c pngerror.c pngget.c pngmem.c pngpread.c \
+	pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c \
+	pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c pngtest.c
+OBJS = png.o pngerror.o pngget.o pngmem.o pngpread.o \
+	pngread.o pngrio.o pngrtran.o pngrutil.o pngset.o \
+	pngtrans.o pngwio.o pngwrite.o pngwtran.o pngwutil.o
+
+# Targets
+all: dependency libpng.a pngtest
+
+libpng.a: $(OBJS)
+	$(AR) $@ $(OBJS)
+	$(RANLIB) $@
+
+#test: pngtest
+#	./pngtest
+aaa:
+	echo $(CFLAGS)
+pngtest: pngtest.o libpng.a
+#	$(LD) -o $@ pngtest.o $(LDFLAGS)
+	$(LD) $^ $(LDLIBS) -o $@ $(LDFLAGS)
+	cris-strip -s $@
+install: $(LIBS)
+	$(INSTALL) -d $(INSTDIR)
+	$(INSTALL) -m $(INSTMODE) -o $(INSTOWNER) -g $(INSTGROUP) $(PROGS) $(INSTDIR)
+	$(INSTALL) -m $(INSTDOCMODE) -o $(INSTOWNER) -g $(INSTGROUP) $(DOCS) $(INSTDIR)
+
+clean:
+	$(RM) *.o libpng.a pngtest pngout.png
+
+dependency:
+	make depend
+depend:
+	makedepend -Y -- $(CFLAGS) -- $(SRCS) 2>/dev/null
+	touch dependency
+
+# DO NOT DELETE THIS LINE -- make depend depends on it.
+
+png.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngerror.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngget.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngmem.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngpread.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngread.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngrio.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngrtran.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngrutil.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngset.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngtrans.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngwio.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngwrite.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngwtran.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngwutil.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h
+pngtest.o: png.h ../zlib/zlib.h ../zlib/zconf.h pngconf.h

src/libpng/png.5

+.TH PNG 5 "December 3, 2004"
+.SH NAME
+png \- Portable Network Graphics (PNG) format
+.SH DESCRIPTION
+PNG (Portable Network Graphics) is an extensible file format for the
+lossless, portable, well-compressed storage of raster images. PNG provides
+a patent-free replacement for GIF and can also replace many
+common uses of TIFF. Indexed-color, grayscale, and truecolor images are
+supported, plus an optional alpha channel. Sample depths range from
+1 to 16 bits.
+.br
+
+PNG is designed to work well in online viewing applications, such as the
+World Wide Web, so it is fully streamable with a progressive display
+option. PNG is robust, providing both full file integrity checking and
+fast, simple detection of common transmission errors. Also, PNG can store
+gamma and chromaticity data for improved color matching on heterogeneous
+platforms.
+
+.SH "SEE ALSO"
+.IR libpng(3), zlib(3), deflate(5), and zlib(5)
+.LP
+PNG specification (second edition), November 2003:
+.IP
+.br
+  <http://www.w3.org/TR/2003/REC-PNG-20031110/
+PNG 1.2 specification, July 1999:
+.IP
+.br
+http://www.libpng.org/pub/png
+.LP
+PNG 1.0 specification, October 1996:
+.IP
+.br
+RFC 2083
+.IP
+.br
+ftp://ds.internic.net/rfc/rfc2083.txt
+.br
+or (as a W3C Recommendation) at
+.br
+http://www.w3.org/TR/REC-png.html
+.SH AUTHORS
+This man page: Glenn Randers-Pehrson
+.LP
+Portable Network Graphics (PNG) Specification (Second Edition)
+Information technology - Computer graphics and image processing -
+Portable Network Graphics (PNG): Functional specification.
+ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
+.LP
+Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
+Glenn Randers-Pehrson and others (png-list).
+.LP
+Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
+Thomas Boutell and others (png-list).
+.LP
+
+
+.SH COPYRIGHT NOTICE
+.LP
+This man page is Copyright (c) 1998-2004 Glenn Randers-Pehrson.  See png.h
+for conditions of use and distribution.
+.LP
+The PNG Specification (Second Edition) is
+Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
+.LP
+The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
+See the specification for conditions of use and distribution.
+.LP
+The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
+Technology.  See the specification for conditions of use and distribution.
+.LP
+.\" end of man page
+

src/libpng/pngerror.c

+
+/* pngerror.c - stub functions for i/o and memory allocation
+ *
+ * libpng version 1.2.8 - December 3, 2004
+ * For conditions of distribution and use, see copyright notice in png.h
+ * Copyright (c) 1998-2004 Glenn Randers-Pehrson
+ * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
+ * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
+ *
+ * This file provides a location for all error handling.  Users who
+ * need special error handling are expected to write replacement functions
+ * and use png_set_error_fn() to use those functions.  See the instructions
+ * at each function.
+ */
+
+#define PNG_INTERNAL
+#include "png.h"
+
+static void /* PRIVATE */
+png_default_error PNGARG((png_structp png_ptr,
+  png_const_charp error_message));
+static void /* PRIVATE */
+png_default_warning PNGARG((png_structp png_ptr,
+  png_const_charp warning_message));
+
+/* This function is called whenever there is a fatal error.  This function
+ * should not be changed.  If there is a need to handle errors differently,
+ * you should supply a replacement error function and use png_set_error_fn()
+ * to replace the error function at run-time.
+ */
+void PNGAPI
+png_error(png_structp png_ptr, png_const_charp error_message)
+{
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   char msg[16];
+   if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+   {
+     if (*error_message == '#')
+     {
+         int offset;
+         for (offset=1; offset<15; offset++)
+            if (*(error_message+offset) == ' ')
+                break;
+         if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+         {
+            int i;
+            for (i=0; i<offset-1; i++)
+               msg[i]=error_message[i+1];
+            msg[i]='\0';
+            error_message=msg;
+         }
+         else
+            error_message+=offset;
+     }
+     else
+     {
+         if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
+         {
+            msg[0]='0';        
+            msg[1]='\0';
+            error_message=msg;
+         }
+     }
+   }
+#endif
+   if (png_ptr != NULL && png_ptr->error_fn != NULL)
+      (*(png_ptr->error_fn))(png_ptr, error_message);
+
+   /* If the custom handler doesn't exist, or if it returns,
+      use the default handler, which will not return. */
+   png_default_error(png_ptr, error_message);
+}
+
+/* This function is called whenever there is a non-fatal error.  This function
+ * should not be changed.  If there is a need to handle warnings differently,
+ * you should supply a replacement warning function and use
+ * png_set_error_fn() to replace the warning function at run-time.
+ */
+void PNGAPI
+png_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+   int offset = 0;
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (png_ptr->flags&(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
+#endif
+   {
+     if (*warning_message == '#')
+     {
+         for (offset=1; offset<15; offset++)
+            if (*(warning_message+offset) == ' ')
+                break;
+     }
+   }
+   if (png_ptr != NULL && png_ptr->warning_fn != NULL)
+      (*(png_ptr->warning_fn))(png_ptr, warning_message+offset);
+   else
+      png_default_warning(png_ptr, warning_message+offset);
+}
+
+/* These utilities are used internally to build an error message that relates
+ * to the current chunk.  The chunk name comes from png_ptr->chunk_name,
+ * this is used to prefix the message.  The message is limited in length
+ * to 63 bytes, the name characters are output as hex digits wrapped in []
+ * if the character is invalid.
+ */
+#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
+static PNG_CONST char png_digit[16] = {
+   '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
+   'A', 'B', 'C', 'D', 'E', 'F'
+};
+
+static void /* PRIVATE */
+png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp
+   error_message)
+{
+   int iout = 0, iin = 0;
+
+   while (iin < 4)
+   {
+      int c = png_ptr->chunk_name[iin++];
+      if (isnonalpha(c))
+      {
+         buffer[iout++] = '[';
+         buffer[iout++] = png_digit[(c & 0xf0) >> 4];
+         buffer[iout++] = png_digit[c & 0x0f];
+         buffer[iout++] = ']';
+      }
+      else
+      {
+         buffer[iout++] = (png_byte)c;
+      }
+   }
+
+   if (error_message == NULL)
+      buffer[iout] = 0;
+   else
+   {
+      buffer[iout++] = ':';
+      buffer[iout++] = ' ';
+      png_strncpy(buffer+iout, error_message, 63);
+      buffer[iout+63] = 0;
+   }
+}
+
+void PNGAPI
+png_chunk_error(png_structp png_ptr, png_const_charp error_message)
+{
+   char msg[18+64];
+   png_format_buffer(png_ptr, msg, error_message);
+   png_error(png_ptr, msg);
+}
+
+void PNGAPI
+png_chunk_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+   char msg[18+64];
+   png_format_buffer(png_ptr, msg, warning_message);
+   png_warning(png_ptr, msg);
+}
+
+/* This is the default error handling function.  Note that replacements for
+ * this function MUST NOT RETURN, or the program will likely crash.  This
+ * function is used by default, or if the program supplies NULL for the
+ * error function pointer in png_set_error_fn().
+ */
+static void /* PRIVATE */
+png_default_error(png_structp png_ptr, png_const_charp error_message)
+{
+#ifndef PNG_NO_CONSOLE_IO
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (*error_message == '#')
+   {
+     int offset;
+     char error_number[16];
+     for (offset=0; offset<15; offset++)
+     {
+         error_number[offset] = *(error_message+offset+1);
+         if (*(error_message+offset) == ' ')
+             break;
+     }
+     if((offset > 1) && (offset < 15))
+     {
+       error_number[offset-1]='\0';
+       fprintf(stderr, "libpng error no. %s: %s\n", error_number,
+          error_message+offset);
+     }
+     else
+       fprintf(stderr, "libpng error: %s, offset=%d\n", error_message,offset);
+   }
+   else
+#endif
+   fprintf(stderr, "libpng error: %s\n", error_message);
+#endif
+
+#ifdef PNG_SETJMP_SUPPORTED
+#  ifdef USE_FAR_KEYWORD
+   {
+      jmp_buf jmpbuf;
+      png_memcpy(jmpbuf,png_ptr->jmpbuf,png_sizeof(jmp_buf));
+      longjmp(jmpbuf, 1);
+   }
+#  else
+   longjmp(png_ptr->jmpbuf, 1);
+# endif
+#else
+   /* make compiler happy */ ;
+   if (png_ptr)
+   PNG_ABORT();
+#endif
+#ifdef PNG_NO_CONSOLE_IO
+   /* make compiler happy */ ;
+   if (&error_message != NULL)
+      return;
+#endif
+}
+
+/* This function is called when there is a warning, but the library thinks
+ * it can continue anyway.  Replacement functions don't have to do anything
+ * here if you don't want them to.  In the default configuration, png_ptr is
+ * not used, but it is passed in case it may be useful.
+ */
+static void /* PRIVATE */
+png_default_warning(png_structp png_ptr, png_const_charp warning_message)
+{
+#ifndef PNG_NO_CONSOLE_IO
+#  ifdef PNG_ERROR_NUMBERS_SUPPORTED
+   if (*warning_message == '#')
+   {
+     int offset;
+     char warning_number[16];
+     for (offset=0; offset<15; offset++)
+     {
+        warning_number[offset]=*(warning_message+offset+1);
+        if (*(warning_message+offset) == ' ')
+            break;
+     }
+     if((offset > 1) && (offset < 15))
+     {
+       warning_number[offset-1]='\0';
+       fprintf(stderr, "libpng warning no. %s: %s\n", warning_number,
+          warning_message+offset);
+     }
+     else
+       fprintf(stderr, "libpng warning: %s\n", warning_message);
+   }
+   else
+#  endif
+     fprintf(stderr, "libpng warning: %s\n", warning_message);
+#else
+   /* make compiler happy */ ;
+   if (warning_message)
+     return;
+#endif
+   /* make compiler happy */ ;
+   if (png_ptr)
+      return;
+}
+
+/* This function is called when the application wants to use another method
+ * of handling errors and warnings.  Note that the error function MUST NOT
+ * return to the calling routine or serious problems will occur.  The return
+ * method used in the default routine calls longjmp(png_ptr->jmpbuf, 1)
+ */
+void PNGAPI
+png_set_error_fn(png_structp png_ptr, png_voidp error_ptr,
+   png_error_ptr error_fn, png_error_ptr warning_fn)
+{
+   png_ptr->error_ptr = error_ptr;
+   png_ptr->error_fn = error_fn;
+   png_ptr->warning_fn = warning_fn;
+}
+
+
+/* This function returns a pointer to the error_ptr associated with the user
+ * functions.  The application should free any memory associated with this
+ * pointer before png_write_destroy and png_read_destroy are called.
+ */
+png_voidp PNGAPI
+png_get_error_ptr(png_structp png_ptr)
+{
+   return ((png_voidp)png_ptr->error_ptr);
+}
+
+
+#ifdef PNG_ERROR_NUMBERS_SUPPORTED
+void PNGAPI
+png_set_strip_error_numbers(png_structp png_ptr, png_uint_32 strip_mode)
+{
+   if(png_ptr != NULL)
+   {
+     png_ptr->flags &=
+       ((~(PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
+   }
+}
+#endif