Imported from libpng-1.2.19beta4.tar

This commit is contained in:
Glenn Randers-Pehrson 2007-05-20 21:40:52 -05:00
parent 788f962fbd
commit ba880c5501
55 changed files with 187 additions and 153 deletions

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@ -1,5 +1,5 @@
Libpng 1.2.19beta3 - May 20, 2007
Libpng 1.2.19beta4 - May 21, 2007
This is not intended to be a public release. It will be replaced
within a few weeks by a public version or by another test version.
@ -9,32 +9,32 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.2.19beta3.tar.gz
libpng-1.2.19beta3.tar.bz2
libpng-1.2.19beta4.tar.gz
libpng-1.2.19beta4.tar.bz2
Source files with LF line endings (for Unix/Linux) without the
"configure" script
libpng-1.2.19beta3-no-config.tar.gz
libpng-1.2.19beta3-no-config.tar.bz2
libpng-1.2.19beta4-no-config.tar.gz
libpng-1.2.19beta4-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the
"configure" script
lp1219b03.zip
lp1219b03.tar.bz2
lp1219b04.zip
lp1219b04.tar.bz2
Project files
libpng-1.2.19beta3-project-netware.zip
libpng-1.2.19beta3-project-wince.zip
libpng-1.2.19beta4-project-netware.zip
libpng-1.2.19beta4-project-wince.zip
Other information:
libpng-1.2.19beta3-README.txt
libpng-1.2.19beta3-KNOWNBUGS.txt
libpng-1.2.19beta3-LICENSE.txt
libpng-1.2.19beta3-Y2K-compliance.txt
libpng-1.2.19beta4-README.txt
libpng-1.2.19beta4-KNOWNBUGS.txt
libpng-1.2.19beta4-LICENSE.txt
libpng-1.2.19beta4-Y2K-compliance.txt
Changes since the last public release (1.2.18):
@ -45,7 +45,7 @@ version 1.2.19beta1 [May 18, 2007]
version 1.2.19beta2 [May 18, 2007]
Fixed png_do_expand() to only use the appropriate bits of tRNS value.
version 1.2.19beta3 [May 20, 2007]
version 1.2.19beta3 [May 21, 2007]
Add some "png_byte" typecasts in png_check_keyword().
Write new_key instead of key in zTXt chunk.

11
CHANGES
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@ -1738,9 +1738,14 @@ version 1.2.19beta1 [May 18, 2007]
version 1.2.19beta2 [May 18, 2007]
Fixed png_do_expand() to only use the appropriate bits of tRNS value.
version 1.2.19beta3 [May 20, 2007]
Add some "png_byte" typecasts in png_check_keyword().
Write new_key instead of key in zTXt chunk.
version 1.2.19beta3 [May 19, 2007]
Add some "png_byte" typecasts in png_check_keyword() and write new_key
instead of key in zTXt chunk (Kevin Ryde).
version 1.2.19beta4 [May 21, 2007]
Add png_snprintf() function and use it in place of sprint() for improved
defense against buffer overflows.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

18
INSTALL
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@ -1,5 +1,5 @@
Installing libpng version 1.2.19beta3 - May 20, 2007
Installing libpng version 1.2.19beta4 - May 21, 2007
On Unix/Linux and similar systems, you can simply type
@ -44,7 +44,7 @@ to have access to the 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-1.2.19beta3" or "lpng109" and "zlib-1.2.1"
might be called "libpng-1.2.19beta4" or "lpng109" and "zlib-1.2.1"
or "zlib121") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this:
@ -101,14 +101,14 @@ include
CMakeLists.txt => "cmake" script
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.19beta3)
gcc, creates libpng12.so.0.1.2.19beta4)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.19beta3)
(gcc, creates libpng12.so.0.1.2.19beta4)
makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.19beta3,
(gcc, creates libpng12.so.0.1.2.19beta4,
uses assembler code tuned for Intel MMX platform)
makefile.nommx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.19beta3
(gcc, creates libpng12.so.0.1.2.19beta4
does not use Intel MMX assembler code)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
@ -131,12 +131,12 @@ include
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc,
creates libpng12.so.0.1.2.19beta3)
creates libpng12.so.0.1.2.19beta4)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng12.so.0.1.2.19beta3)
creates libpng12.so.0.1.2.19beta4)
makefile.so9 => Solaris 9 makefile (gcc,
creates libpng12.so.0.1.2.19beta3)
creates libpng12.so.0.1.2.19beta4)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

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@ -1,5 +1,5 @@
Known bugs in libpng version 1.2.19beta3
Known bugs in libpng version 1.2.19beta4
1. April 22, 2001: pnggccrd.c has been reported to crash on NetBSD when
reading interlaced PNG files, when assembler code is enabled but running

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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.19beta3, May 20, 2007, are
libpng versions 1.2.6, August 15, 2004, through 1.2.19beta4, May 21, 2007, are
Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -106,4 +106,4 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
May 20, 2007
May 21, 2007

14
README
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@ -1,4 +1,4 @@
README for libpng version 1.2.19beta3 - May 20, 2007 (shared library 12.0)
README for libpng version 1.2.19beta4 - May 21, 2007 (shared library 12.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.
@ -190,11 +190,11 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.19beta3)
gcc, creates libpng12.so.0.1.2.19beta4)
makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.19beta3)
(gcc, creates libpng12.so.0.1.2.19beta4)
makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.19beta3,
(gcc, creates libpng12.so.0.1.2.19beta4,
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
@ -216,12 +216,12 @@ Files in this distribution:
makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics
(gcc, creates libpng12.so.0.1.2.19beta3)
(gcc, creates libpng12.so.0.1.2.19beta4)
makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng12.so.0.1.2.19beta3)
(gcc, creates libpng12.so.0.1.2.19beta4)
makefile.so9 => Solaris 9 makefile
(gcc, creates libpng12.so.0.1.2.19beta3)
(gcc, creates libpng12.so.0.1.2.19beta4)
makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

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@ -1,13 +1,13 @@
Y2K compliance in libpng:
=========================
May 20, 2007
May 21, 2007
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 1.2.19beta3 are Y2K compliant. It is my belief that earlier
upward through 1.2.19beta4 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

22
configure vendored
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@ -1,6 +1,6 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61 for libpng 1.2.19beta3.
# Generated by GNU Autoconf 2.61 for libpng 1.2.19beta4.
#
# Report bugs to <png-mng-implement@lists.sourceforge.net>.
#
@ -728,8 +728,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
# Identity of this package.
PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.2.19beta3'
PACKAGE_STRING='libpng 1.2.19beta3'
PACKAGE_VERSION='1.2.19beta4'
PACKAGE_STRING='libpng 1.2.19beta4'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
ac_unique_file="pngget.c"
@ -1405,7 +1405,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
\`configure' configures libpng 1.2.19beta3 to adapt to many kinds of systems.
\`configure' configures libpng 1.2.19beta4 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1475,7 +1475,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.2.19beta3:";;
short | recursive ) echo "Configuration of libpng 1.2.19beta4:";;
esac
cat <<\_ACEOF
@ -1585,7 +1585,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
libpng configure 1.2.19beta3
libpng configure 1.2.19beta4
generated by GNU Autoconf 2.61
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@ -1599,7 +1599,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by libpng $as_me 1.2.19beta3, which was
It was created by libpng $as_me 1.2.19beta4, which was
generated by GNU Autoconf 2.61. Invocation command line was
$ $0 $@
@ -2269,7 +2269,7 @@ fi
# Define the identity of the package.
PACKAGE='libpng'
VERSION='1.2.19beta3'
VERSION='1.2.19beta4'
cat >>confdefs.h <<_ACEOF
@ -2440,7 +2440,7 @@ fi
PNGLIB_VERSION=1.2.19beta3
PNGLIB_VERSION=1.2.19beta4
PNGLIB_MAJOR=1
PNGLIB_MINOR=2
PNGLIB_RELEASE=19
@ -21119,7 +21119,7 @@ exec 6>&1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by libpng $as_me 1.2.19beta3, which was
This file was extended by libpng $as_me 1.2.19beta4, which was
generated by GNU Autoconf 2.61. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@ -21172,7 +21172,7 @@ Report bugs to <bug-autoconf@gnu.org>."
_ACEOF
cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\
libpng config.status 1.2.19beta3
libpng config.status 1.2.19beta4
configured by $0, generated by GNU Autoconf 2.61,
with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

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@ -18,12 +18,12 @@ AC_PREREQ(2.59)
dnl Version number stuff here:
AC_INIT([libpng], [1.2.19beta3], [png-mng-implement@lists.sourceforge.net])
AC_INIT([libpng], [1.2.19beta4], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake
AM_MAINTAINER_MODE
PNGLIB_VERSION=1.2.19beta3
PNGLIB_VERSION=1.2.19beta4
PNGLIB_MAJOR=1
PNGLIB_MINOR=2
PNGLIB_RELEASE=19

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@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng
libpng version 1.2.19beta3 - May 20, 2007
libpng version 1.2.19beta4 - May 21, 2007
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2007 Glenn Randers-Pehrson
@ -2921,13 +2921,13 @@ application:
IX. Y2K Compliance in libpng
May 20, 2007
May 21, 2007
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 1.2.19beta3 are Y2K compliant. It is my belief that earlier
upward through 1.2.19beta4 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

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@ -1,6 +1,6 @@
.TH LIBPNG 3 "May 20, 2007"
.TH LIBPNG 3 "May 21, 2007"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta3
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta4
.SH SYNOPSIS
\fB
#include <png.h>\fP
@ -410,7 +410,7 @@ 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 1.2.19beta3 - May 20, 2007
libpng version 1.2.19beta4 - May 21, 2007
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2007 Glenn Randers-Pehrson
@ -3331,13 +3331,13 @@ application:
.SH IX. Y2K Compliance in libpng
May 20, 2007
May 21, 2007
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 1.2.19beta3 are Y2K compliant. It is my belief that earlier
upward through 1.2.19beta4 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
@ -3526,7 +3526,7 @@ the first widely used release:
1.2.17 13 10217 12.so.0.17[.0]
1.0.26 10 10026 10.so.0.26[.0]
1.2.18 13 10218 12.so.0.18[.0]
1.2.19beta1-3 13 10219 12.so.0.19[.0]
1.2.19beta1-4 13 10219 12.so.0.19[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@ -3582,7 +3582,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.19beta3 - May 20, 2007:
Libpng version 1.2.19beta4 - May 21, 2007:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -3603,7 +3603,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following
this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.19beta3, May 20, 2007, are
libpng versions 1.2.6, August 15, 2004, through 1.2.19beta4, May 21, 2007, are
Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors
@ -3702,7 +3702,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
May 20, 2007
May 21, 2007
.\" end of man page

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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "May 20, 2007"
.TH LIBPNGPF 3 "May 21, 2007"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta3
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.19beta4
(private functions)
.SH SYNOPSIS
\fB#include <png.h>\fP

2
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "May 20, 2007"
.TH PNG 5 "May 21, 2007"
.SH NAME
png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION

10
png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.2.19 May 20, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -13,7 +13,7 @@
#include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_19beta3 Your_png_h_is_not_version_1_2_19beta3;
typedef version_1_2_19beta4 Your_png_h_is_not_version_1_2_19beta4;
/* Version information for C files. This had better match the version
* string defined in png.h. */
@ -674,7 +674,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
#ifdef USE_FAR_KEYWORD
{
char near_time_buf[29];
sprintf(near_time_buf, "%d %s %d %02d:%02d:%02d +0000",
png_snprintf6(near_time_buf,29,"%d %s %d %02d:%02d:%02d +0000",
ptime->day % 32, short_months[(ptime->month - 1) % 12],
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
@ -682,7 +682,7 @@ png_convert_to_rfc1123(png_structp png_ptr, png_timep ptime)
29*png_sizeof(char));
}
#else
sprintf(png_ptr->time_buffer, "%d %s %d %02d:%02d:%02d +0000",
png_snprintf6(png_ptr->time_buffer,29,"%d %s %d %02d:%02d:%02d +0000",
ptime->day % 32, short_months[(ptime->month - 1) % 12],
ptime->year, ptime->hour % 24, ptime->minute % 60,
ptime->second % 61);
@ -706,7 +706,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr)
{
png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
return ((png_charp) "\n libpng version 1.2.19beta3 - May 20, 2007\n\
return ((png_charp) "\n libpng version 1.2.19beta4 - May 21, 2007\n\
Copyright (c) 1998-2007 Glenn Randers-Pehrson\n\
Copyright (c) 1996-1997 Andreas Dilger\n\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");

20
png.h
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@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.2.19beta3 - May 20, 2007
* libpng version 1.2.19beta4 - May 21, 2007
* Copyright (c) 1998-2007 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 1.2.19beta3 - May 20, 2007: Glenn
* libpng versions 0.97, January 1998, through 1.2.19beta4 - May 21, 2007: Glenn
* See also "Contributing Authors", below.
*
* Note about libpng version numbers:
@ -150,7 +150,7 @@
* 1.2.17 13 10217 12.so.0.17[.0]
* 1.0.26 10 10026 10.so.0.26[.0]
* 1.2.18 13 10218 12.so.0.18[.0]
* 1.2.19beta1-3 13 10219 12.so.0.19[.0]
* 1.2.19beta1-4 13 10219 12.so.0.19[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@ -180,7 +180,7 @@
* If you modify libpng you may insert additional notices immediately following
* this sentence.
*
* libpng versions 1.2.6, August 15, 2004, through 1.2.19beta3, May 20, 2007, are
* libpng versions 1.2.6, August 15, 2004, through 1.2.19beta4, May 21, 2007, are
* Copyright (c) 2004, 2006-2007 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors:
@ -292,13 +292,13 @@
* Y2K compliance in libpng:
* =========================
*
* May 20, 2007
* May 21, 2007
*
* 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 1.2.19beta3 are Y2K compliant. It is my belief that earlier
* upward through 1.2.19beta4 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
@ -354,9 +354,9 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.19beta3"
#define PNG_LIBPNG_VER_STRING "1.2.19beta4"
#define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.19beta3 - May 20, 2007 (header)\n"
" libpng version 1.2.19beta4 - May 21, 2007 (header)\n"
#define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 13
@ -368,7 +368,7 @@
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */
#define PNG_LIBPNG_VER_BUILD 3
#define PNG_LIBPNG_VER_BUILD 4
/* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1
@ -1407,7 +1407,7 @@ struct png_struct_def
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef png_structp version_1_2_19beta3;
typedef png_structp version_1_2_19beta4;
typedef png_struct FAR * FAR * png_structpp;

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@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.2.19beta3 - May 20, 2007
* libpng version 1.2.19beta4 - May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1414,6 +1414,7 @@ typedef z_stream FAR * png_zstreamp;
# define NOCHECK 0
# define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
# define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
# define png_snprintf _fsnprintf /* Added to v 1.2.19 */
# define png_strcpy _fstrcpy
# define png_strncpy _fstrncpy /* Added to v 1.2.6 */
# define png_strlen _fstrlen
@ -1423,6 +1424,20 @@ typedef z_stream FAR * png_zstreamp;
#else /* use the usual functions */
# define CVT_PTR(ptr) (ptr)
# define CVT_PTR_NOCHECK(ptr) (ptr)
# ifndef PNG_NO_SNPRINTF
# define png_snprintf snprintf /* Added to v 1.2.19 */
# define png_snprintf2 snprintf
# define png_snprintf6 snprintf
# else
/* You don't have or don't want to use snprintf(). Caution: Using
* sprintf instead of snprintf exposes your application to accidental
* or malevolent buffer overflows. If you don't have snprintf()
* as a general rule you should provide one. */
# define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
# define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
# define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
# endif
# define png_strcpy strcpy
# define png_strncpy strncpy /* Added to v 1.2.6 */
# define png_strlen strlen

View File

@ -1,7 +1,7 @@
/* pngerror.c - stub functions for i/o and memory allocation
*
* Last changed in libpng 1.2.19 May 20, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2006 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

View File

@ -7,7 +7,7 @@
* and http://www.intel.com/drg/pentiumII/appnotes/923/923.htm
* for Intel's performance analysis of the MMX vs. non-MMX code.
*
* Last changed in libpng 1.2.19 May 17, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
@ -5108,9 +5108,9 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
png_debug(1, "in png_read_filter_row (pnggccrd.c)\n");
switch (filter)
{
case 0: sprintf(filnm, "none");
case 0: png_snprintf(filnm, 10, "none");
break;
case 1: sprintf(filnm, "sub-%s",
case 1: png_snprintf(filnm, 10, "sub-%s",
#if defined(PNG_MMX_CODE_SUPPORTED) && defined(PNG_THREAD_UNSAFE_OK)
#if !defined(PNG_1_0_X)
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" :
@ -5118,7 +5118,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#endif
"x86");
break;
case 2: sprintf(filnm, "up-%s",
case 2: png_snprintf(filnm, 10, "up-%s",
#ifdef PNG_MMX_CODE_SUPPORTED
#if !defined(PNG_1_0_X)
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" :
@ -5126,7 +5126,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#endif
"x86");
break;
case 3: sprintf(filnm, "avg-%s",
case 3: png_snprintf(filnm, 10, "avg-%s",
#if defined(PNG_MMX_CODE_SUPPORTED) && defined(PNG_THREAD_UNSAFE_OK)
#if !defined(PNG_1_0_X)
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" :
@ -5134,7 +5134,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#endif
"x86");
break;
case 4: sprintf(filnm, "Paeth-%s",
case 4: png_snprintf(filnm, 10, "Paeth-%s",
#if defined(PNG_MMX_CODE_SUPPORTED) && defined(PNG_THREAD_UNSAFE_OK)
#if !defined(PNG_1_0_X)
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":
@ -5142,7 +5142,7 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
#endif
"x86");
break;
default: sprintf(filnm, "unknw");
default: png_snprintf(filnm, 10, "unknw");
break;
}
png_debug2(0, "row_number=%5ld, %5s, ", png_ptr->row_number, filnm);

View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.2.19 May 20, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.2.17 May 15, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -117,11 +117,13 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
char msg[80];
if (user_png_ver)
{
sprintf(msg, "Application was compiled with png.h from libpng-%.20s",
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
#endif
@ -197,11 +199,13 @@ png_read_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_ptr->warning_fn=NULL;
if (user_png_ver)
{
sprintf(msg, "Application was compiled with png.h from libpng-%.20s",
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
}

View File

@ -1,7 +1,7 @@
/* pngrtran.c - transforms the data in a row for PNG readers
*
* Last changed in libpng 1.2.17 May 15, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1250,7 +1250,8 @@ png_do_read_transformations(png_structp png_ptr)
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char msg[50];
sprintf(msg, "NULL row buffer for row %ld, pass %d", png_ptr->row_number,
png_snprintf2(msg, 50,
"NULL row buffer for row %ld, pass %d", png_ptr->row_number,
png_ptr->pass);
png_error(png_ptr, msg);
#else

View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.2.19 May 20, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -282,13 +282,16 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
char umsg[52];
if (ret == Z_BUF_ERROR)
sprintf(umsg,"Buffer error in compressed datastream in %s chunk",
png_snprintf(umsg, 52,
"Buffer error in compressed datastream in %s chunk",
png_ptr->chunk_name);
else if (ret == Z_DATA_ERROR)
sprintf(umsg,"Data error in compressed datastream in %s chunk",
png_snprintf(umsg, 52,
"Data error in compressed datastream in %s chunk",
png_ptr->chunk_name);
else
sprintf(umsg,"Incomplete compressed datastream in %s chunk",
png_snprintf(umsg, 52,
"Incomplete compressed datastream in %s chunk",
png_ptr->chunk_name);
png_warning(png_ptr, umsg);
#else
@ -321,7 +324,8 @@ png_decompress_chunk(png_structp png_ptr, int comp_type,
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char umsg[50];
sprintf(umsg, "Unknown zTXt compression type %d", comp_type);
png_snprintf(umsg, 50,
"Unknown zTXt compression type %d", comp_type);
png_warning(png_ptr, umsg);
#else
png_warning(png_ptr, "Unknown zTXt compression type");

View File

@ -1551,4 +1551,4 @@ main(int argc, char *argv[])
}
/* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_19beta3 your_png_h_is_not_version_1_2_19beta3;
typedef version_1_2_19beta4 your_png_h_is_not_version_1_2_19beta4;

View File

@ -3,7 +3,7 @@
*
* For Intel x86 CPU and Microsoft Visual C++ compiler
*
* Last changed in libpng 1.2.17 May 15, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* Copyright (c) 1998, Intel Corporation
@ -3693,32 +3693,32 @@ png_read_filter_row(png_structp png_ptr, png_row_infop row_info, png_bytep
png_debug(1, "in png_read_filter_row\n");
switch (filter)
{
case 0: sprintf(filnm, "none");
case 0: png_snprintf(filnm, 10, "none");
break;
#if !defined(PNG_1_0_X)
case 1: sprintf(filnm, "sub-%s",
case 1: png_snprintf(filnm, 10, "sub-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_SUB)? "MMX" : "x86");
break;
case 2: sprintf(filnm, "up-%s",
case 2: png_snprintf(filnm, 10, "up-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_UP)? "MMX" : "x86");
break;
case 3: sprintf(filnm, "avg-%s",
case 3: png_snprintf(filnm, 10, "avg-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_AVG)? "MMX" : "x86");
break;
case 4: sprintf(filnm, "Paeth-%s",
case 4: png_snprintf(filnm, 10, "Paeth-%s",
(png_ptr->asm_flags & PNG_ASM_FLAG_MMX_READ_FILTER_PAETH)? "MMX":"x86");
break;
#else
case 1: sprintf(filnm, "sub");
case 1: png_snprintf(filnm, 10, "sub");
break;
case 2: sprintf(filnm, "up");
case 2: png_snprintf(filnm, 10, "up");
break;
case 3: sprintf(filnm, "avg");
case 3: png_snprintf(filnm, 10, "avg");
break;
case 4: sprintf(filnm, "Paeth");
case 4: png_snprintf(filnm, 10, "Paeth");
break;
#endif
default: sprintf(filnm, "unknw");
default: png_snprintf(filnm, 10, "unknw");
break;
}
png_debug2(0,"row=%5d, %s, ", png_ptr->row_number, filnm);

View File

@ -517,11 +517,13 @@ png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr,
char msg[80];
if (user_png_ver)
{
sprintf(msg, "Application was compiled with png.h from libpng-%.20s",
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
#endif
@ -587,11 +589,13 @@ png_write_init_2(png_structp png_ptr, png_const_charp user_png_ver,
png_ptr->warning_fn=NULL;
if (user_png_ver)
{
sprintf(msg, "Application was compiled with png.h from libpng-%.20s",
png_snprintf(msg, 80,
"Application was compiled with png.h from libpng-%.20s",
user_png_ver);
png_warning(png_ptr, msg);
}
sprintf(msg, "Application is running with png.c from libpng-%.20s",
png_snprintf(msg, 80,
"Application is running with png.c from libpng-%.20s",
png_libpng_ver);
png_warning(png_ptr, msg);
}

View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.2.15 January 5, 2007
* Last changed in libpng 1.2.19 May 21, 2007
* For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2007 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -182,7 +182,7 @@ png_text_compress(png_structp png_ptr,
{
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char msg[50];
sprintf(msg, "Unknown compression type %d", compression);
png_snprintf(msg, 50, "Unknown compression type %d", compression);
png_warning(png_ptr, msg);
#else
png_warning(png_ptr, "Unknown compression type");
@ -1237,7 +1237,8 @@ png_check_keyword(png_structp png_ptr, png_charp key, png_charpp new_key)
#if !defined(PNG_NO_STDIO) && !defined(_WIN32_WCE)
char msg[40];
sprintf(msg, "invalid keyword character 0x%02X", (png_byte)*kp);
png_snprintf(msg, 40,
"invalid keyword character 0x%02X", (png_byte)*kp);
png_warning(png_ptr, msg);
#else
png_warning(png_ptr, "invalid character in keyword");
@ -1623,9 +1624,9 @@ png_write_sCAL(png_structp png_ptr, int unit, double width, double height)
total_len += wc_len;
}
#else
sprintf(buf + 1, "%12.12e", width);
png_snprintf(buf + 1, 63, "%12.12e", width);
total_len = 1 + png_strlen(buf + 1) + 1;
sprintf(buf + total_len, "%12.12e", height);
png_snprintf(buf + total_len, 64-total_len, "%12.12e", height);
total_len += png_strlen(buf + total_len);
#endif

View File

@ -179,7 +179,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
# SET UP LINKS
set_target_properties(${PNG_LIB_NAME} PROPERTIES
# VERSION 0.${PNGLIB_RELEASE}.1.2.19beta3
# VERSION 0.${PNGLIB_RELEASE}.1.2.19beta4
VERSION 0.${PNGLIB_RELEASE}.0
SOVERSION 0
CLEAN_DIRECT_OUTPUT 1)

View File

@ -8,7 +8,7 @@
# Modeled after libxml-config.
version=1.2.19beta3
version=1.2.19beta4
prefix=""
libdir=""
libs=""

View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
Name: libpng
Description: Loads and saves PNG files
Version: 1.2.19beta3
Version: 1.2.19beta4
Libs: -L${libdir} -lpng12
Cflags: -I${includedir} @LIBPNG_NO_MMX@

View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
Name: libpng
Description: Loads and saves PNG files
Version: 1.2.19beta3
Version: 1.2.19beta4
Libs: -L${libdir} -lpng12
Cflags: -I${includedir}

View File

@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -20,7 +20,7 @@ LN_SF = ln -f -s
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local

View File

@ -8,7 +8,7 @@
# Library name:
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -80,7 +80,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12
PNGMAJ = 0
CYGDLL = 12
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll

View File

@ -19,7 +19,7 @@ ZLIBINC=../zlib
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -5,7 +5,7 @@
# Library name:
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12

View File

@ -12,7 +12,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -16,7 +16,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -8,7 +8,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -6,7 +6,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -76,7 +76,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12
PNGMAJ = 0
MINGDLL = 12
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=libpng$(MINGDLL).dll

View File

@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
LIB= png12
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.19beta3
SHLIB_MINOR= 1.2.19beta4
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

View File

@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng
LIB= png
SHLIB_MAJOR= 3
SHLIB_MINOR= 1.2.19beta3
SHLIB_MINOR= 1.2.19beta4
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

View File

@ -7,7 +7,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -8,7 +8,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.19beta3
SHLIB_MINOR= 1.2.19beta4
LIB= png
SRCS= png.c pngerror.c pnggccrd.c pngget.c pngmem.c pngpread.c \

View File

@ -9,7 +9,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -6,7 +6,7 @@
# Library name:
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -6,7 +6,7 @@
# Library name:
LIBNAME=libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -8,7 +8,7 @@
# Library name:
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12

View File

@ -8,7 +8,7 @@
# Library name:
LIBNAME = libpng12
PNGMAJ = 0
PNGMIN = 1.2.19beta3
PNGMIN = 1.2.19beta4
PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names:

View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2
;----------------------------------------
; Version 1.2.19beta3
; Version 1.2.19beta4
LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2"

View File

@ -5,7 +5,7 @@
LIBRARY
EXPORTS
;Version 1.2.19beta3
;Version 1.2.19beta4
png_build_grayscale_palette @1
png_check_sig @2
png_chunk_error @3