removed existing library

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/pngrio.c

-
-/* pngrio.c - functions for data input
- *
- * libpng 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 input.  Users who need
- * special handling are expected to write a function that has the same
- * arguments as this and performs a similar function, but that possibly
- * has a different input method.  Note that you shouldn't change this
- * function, but rather write a replacement function and then make
- * libpng use it at run time with png_set_read_fn(...).
- */
-
-#define PNG_INTERNAL
-#include "png.h"
-
-/* Read the data from whatever input you are using.  The default routine
-   reads from a file pointer.  Note that this routine sometimes gets called
-   with very small lengths, so you should implement some kind of simple
-   buffering if you are using unbuffered reads.  This should never be asked
-   to read more then 64K on a 16 bit machine. */
-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);
-   if (png_ptr->read_data_fn != NULL)
-      (*(png_ptr->read_data_fn))(png_ptr, data, length);
-   else
-      png_error(png_ptr, "Call to NULL read function");
-}
-
-#if !defined(PNG_NO_STDIO)
-/* This is the function that does the actual reading of data.  If you are
-   not reading from a standard C stream, you should create a replacement
-   read_data function and use it at run time with png_set_read_fn(), rather
-   than changing the library. */
-#ifndef USE_FAR_KEYWORD
-void PNGAPI
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
-   png_size_t check;
-
-   /* fread() returns 0 on error, so it is OK to store this in a png_size_t
-    * instead of an int, which is what fread() actually returns.
-    */
-#if defined(_WIN32_WCE)
-   if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
-      check = 0;
-#else
-   check = (png_size_t)fread(data, (png_size_t)1, length,
-      (png_FILE_p)png_ptr->io_ptr);
-#endif
-
-   if (check != length)
-      png_error(png_ptr, "Read Error");
-}
-#else
-/* this is the model-independent version. Since the standard I/O library
-   can't handle far buffers in the medium and small models, we have to copy
-   the data.
-*/
-
-#define NEAR_BUF_SIZE 1024
-#define MIN(a,b) (a <= b ? a : b)
-
-static void /* PRIVATE */
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
-   int check;
-   png_byte *n_data;
-   png_FILE_p io_ptr;
-
-   /* Check if data really is near. If so, use usual code. */
-   n_data = (png_byte *)CVT_PTR_NOCHECK(data);
-   io_ptr = (png_FILE_p)CVT_PTR(png_ptr->io_ptr);
-   if ((png_bytep)n_data == data)
-   {
-#if defined(_WIN32_WCE)
-      if ( !ReadFile((HANDLE)(png_ptr->io_ptr), data, length, &check, NULL) )
-         check = 0;
-#else
-      check = fread(n_data, 1, length, io_ptr);
-#endif
-   }
-   else
-   {
-      png_byte buf[NEAR_BUF_SIZE];
-      png_size_t read, remaining, err;
-      check = 0;
-      remaining = length;
-      do
-      {
-         read = MIN(NEAR_BUF_SIZE, remaining);
-#if defined(_WIN32_WCE)
-         if ( !ReadFile((HANDLE)(io_ptr), buf, read, &err, NULL) )
-            err = 0;
-#else
-         err = fread(buf, (png_size_t)1, read, io_ptr);
-#endif
-         png_memcpy(data, buf, read); /* copy far buffer to near buffer */
-         if(err != read)
-            break;
-         else
-            check += err;
-         data += read;
-         remaining -= read;
-      }
-      while (remaining != 0);
-   }
-   if ((png_uint_32)check != (png_uint_32)length)
-      png_error(png_ptr, "read Error");
-}
-#endif
-#endif
-
-/* This function allows the application to supply a new input function
-   for libpng if standard C streams aren't being used.
-
-   This function takes as its arguments:
-   png_ptr      - pointer to a png input data structure
-   io_ptr       - pointer to user supplied structure containing info about
-                  the input functions.  May be NULL.
-   read_data_fn - pointer to a new input function that takes as its
-                  arguments a pointer to a png_struct, a pointer to
-                  a location where input data can be stored, and a 32-bit
-                  unsigned int that is the number of bytes to be read.
-                  To exit and output any fatal error messages the new write
-                  function should call png_error(png_ptr, "Error msg"). */
-void PNGAPI
-png_set_read_fn(png_structp png_ptr, png_voidp io_ptr,
-   png_rw_ptr read_data_fn)
-{
-   png_ptr->io_ptr = io_ptr;
-
-#if !defined(PNG_NO_STDIO)
-   if (read_data_fn != NULL)
-      png_ptr->read_data_fn = read_data_fn;
-   else
-      png_ptr->read_data_fn = png_default_read_data;
-#else
-   png_ptr->read_data_fn = read_data_fn;
-#endif
-
-   /* It is an error to write to a read device */
-   if (png_ptr->write_data_fn != NULL)
-   {
-      png_ptr->write_data_fn = NULL;
-      png_warning(png_ptr,
-         "It's an error to set both read_data_fn and write_data_fn in the ");
-      png_warning(png_ptr,
-         "same structure.  Resetting write_data_fn to NULL.");
-   }
-
-#if defined(PNG_WRITE_FLUSH_SUPPORTED)
-   png_ptr->output_flush_fn = NULL;
-#endif
-}