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Glenn Randers-Pehrson 2008-04-12 06:59:47 -05:00
parent b8c4b82d18
commit d9d2a6f6d9
51 changed files with 281 additions and 167 deletions
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58
ANNOUNCE
View File

@ -1,60 +1,58 @@
Libpng 1.2.26 - April 2, 2008 Libpng 1.2.27beta01 - April 12, 2008
This is a public release of libpng, intended for use in production codes. 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.
Files available for download: Files available for download:
Source files with LF line endings (for Unix/Linux) and with a Source files with LF line endings (for Unix/Linux) and with a
"configure" script "configure" script
libpng-1.2.26.tar.gz libpng-1.2.27beta01.tar.gz
libpng-1.2.26.tar.lzma libpng-1.2.27beta01.tar.lzma
(Get the lzma codec from <http://tukaani.org/lzma>). (Get the lzma codec from <http://tukaani.org/lzma>).
libpng-1.2.26.tar.bz2 libpng-1.2.27beta01.tar.bz2
Source files with LF line endings (for Unix/Linux) without the Source files with LF line endings (for Unix/Linux) without the
"configure" script "configure" script
libpng-1.2.26-no-config.tar.gz libpng-1.2.27beta01-no-config.tar.gz
libpng-1.2.26-no-config.tar.lzma libpng-1.2.27beta01-no-config.tar.lzma
libpng-1.2.26-no-config.tar.bz2 libpng-1.2.27beta01-no-config.tar.bz2
Source files with CRLF line endings (for Windows), without the Source files with CRLF line endings (for Windows), without the
"configure" script "configure" script
lpng1226.zip lp1227b01.zip
lpng1226.7z lp1227b01.7z
lpng1226.tar.bz2 lp1227b01.tar.bz2
Project files Project files
libpng-1.2.26-project-netware.zip libpng-1.2.27beta01-project-netware.zip
libpng-1.2.26-project-wince.zip libpng-1.2.27beta01-project-wince.zip
Other information: Other information:
libpng-1.2.26-README.txt libpng-1.2.27beta01-README.txt
libpng-1.2.26-KNOWNBUGS.txt libpng-1.2.27beta01-KNOWNBUGS.txt
libpng-1.2.26-LICENSE.txt libpng-1.2.27beta01-LICENSE.txt
libpng-1.2.26-Y2K-compliance.txt libpng-1.2.27beta01-Y2K-compliance.txt
libpng-1.2.26-[previous version]-diff.txt libpng-1.2.27beta01-[previous version]-diff.txt
Changes since the last public release (1.2.25): Changes since the last public release (1.2.26):
version 1.2.26 [April 2, 2008] version 1.2.27beta01 [April 12, 2008]
Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
Added missing "(" in pngmem.c. Bug introduced in libpng-1.2.2/1.0.13 unknown chunks.
Refined error message returned from deflateInit2 in pngwutil.c Added more information about png_set_keep_unknown_chunks() to the
Check IHDR length in png_push_read_chunk() before saving it. documetation.
Revised contrib/gregbook to handle premature end-of-file and file Reject tRNS chunk with out-of-range samples instead of masking off
read errors correctly. the invalid high bits as done in since libpng-1.2.19beta5.
Free png_ptr->big_row_buf and png_ptr->prev_row before allocating
new copies in png_read_start_row().
Avoid reallocating big_row_buf and prev_row when the size does not increase.
Ifdef out some code that is unused when interlacing is not supported.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement
to subscribe) or to glennrp at users.sourceforge.net to subscribe) or to glennrp at users.sourceforge.net

13
CHANGES
View File

@ -2097,9 +2097,20 @@ version 1.2.26beta05 [March 19, 2008]
version 1.2.26beta06 [March 19, 2008] version 1.2.26beta06 [March 19, 2008]
Avoid reallocating big_row_buf and prev_row when the size does not increase. Avoid reallocating big_row_buf and prev_row when the size does not increase.
version 1.2.26rc01 [April 2, 2008] version 1.2.26rc01 [March 26, 2008]
Ifdef out some code that is unused when interlacing is not supported. Ifdef out some code that is unused when interlacing is not supported.
versions 1.0.32 and 1.2.26 [April 2, 2008]
No changes.
version 1.2.27beta01 [April 12, 2008]
Fixed bug (introduced in libpng-1.0.5h) with handling zero-length
unknown chunks.
Added more information about png_set_keep_unknown_chunks() to the
documetation.
Reject tRNS chunk with out-of-range samples instead of masking off
the invalid high bits as done in since libpng-1.2.19beta5.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit (subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement https://lists.sourceforge.net/lists/listinfo/png-mng-implement

16
INSTALL
View File

@ -1,5 +1,5 @@
Installing libpng version 1.2.26 - April 2, 2008 Installing libpng version 1.2.27beta01 - April 12, 2008
On Unix/Linux and similar systems, you can simply type 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. correspond to the version of zlib that's installed.
You can rename the directories that you downloaded (they You can rename the directories that you downloaded (they
might be called "libpng-1.2.26" or "lpng109" and "zlib-1.2.1" might be called "libpng-1.2.27beta01" or "lpng109" and "zlib-1.2.1"
or "zlib121") so that you have directories called "zlib" and "libpng". or "zlib121") so that you have directories called "zlib" and "libpng".
Your directory structure should look like this: Your directory structure should look like this:
@ -101,9 +101,9 @@ include
CMakeLists.txt => "cmake" script CMakeLists.txt => "cmake" script
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning, makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.26) gcc, creates libpng12.so.0.1.2.27beta01)
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.26) (gcc, creates libpng12.so.0.1.2.27beta01)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from ansi2knr (Requires ansi2knr.c from
@ -125,14 +125,14 @@ include
makefile.openbsd => OpenBSD makefile makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.sggcc => Silicon Graphics (gcc, makefile.sggcc => Silicon Graphics (gcc,
creates libpng12.so.0.1.2.26) creates libpng12.so.0.1.2.27beta01)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile (gcc, makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng12.so.0.1.2.26) creates libpng12.so.0.1.2.27beta01)
makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc, makefile.solaris-x86 => Solaris/intelMMX 2.X makefile (gcc,
creates libpng12.so.0.1.2.26) creates libpng12.so.0.1.2.27beta01)
makefile.so9 => Solaris 9 makefile (gcc, makefile.so9 => Solaris 9 makefile (gcc,
creates libpng12.so.0.1.2.26) creates libpng12.so.0.1.2.27beta01)
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

2
KNOWNBUG
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@ -1,5 +1,5 @@
Known bugs in libpng version 1.2.26 Known bugs in libpng version 1.2.27beta01
1. February 23, 2006: The custom makefiles don't build libpng with -lz. 1. February 23, 2006: The custom makefiles don't build libpng with -lz.

4
LICENSE
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@ -8,7 +8,7 @@ COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are libpng versions 1.2.6, August 15, 2004, through 1.2.27beta01, April 12, 2008, are
Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors 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 Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
April 2, 2008 April 12, 2008

14
README
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@ -1,4 +1,4 @@
README for libpng version 1.2.26 - April 2, 2008 (shared library 12.0) README for libpng version 1.2.27beta01 - April 12, 2008 (shared library 12.0)
See the note about version numbers near the top of png.h See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng. See INSTALL for instructions on how to install libpng.
@ -191,11 +191,11 @@ Files in this distribution:
descrip.mms => VMS makefile for MMS or MMK descrip.mms => VMS makefile for MMS or MMK
makefile.std => Generic UNIX makefile (cc, creates static libpng.a) makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.elf => Linux/ELF makefile symbol versioning, makefile.elf => Linux/ELF makefile symbol versioning,
gcc, creates libpng12.so.0.1.2.26) gcc, creates libpng12.so.0.1.2.27beta01)
makefile.linux => Linux/ELF makefile makefile.linux => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.26) (gcc, creates libpng12.so.0.1.2.27beta01)
makefile.gcmmx => Linux/ELF makefile makefile.gcmmx => Linux/ELF makefile
(gcc, creates libpng12.so.0.1.2.26, (gcc, creates libpng12.so.0.1.2.27beta01,
uses assembler code tuned for Intel MMX platform) uses assembler code tuned for Intel MMX platform)
makefile.gcc => Generic makefile (gcc, creates static libpng.a) makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with makefile.knr => Archaic UNIX Makefile that converts files with
@ -217,12 +217,12 @@ Files in this distribution:
makefile.openbsd => OpenBSD makefile makefile.openbsd => OpenBSD makefile
makefile.sgi => Silicon Graphics IRIX (cc, creates static lib) makefile.sgi => Silicon Graphics IRIX (cc, creates static lib)
makefile.sggcc => Silicon Graphics makefile.sggcc => Silicon Graphics
(gcc, creates libpng12.so.0.1.2.26) (gcc, creates libpng12.so.0.1.2.27beta01)
makefile.sunos => Sun makefile makefile.sunos => Sun makefile
makefile.solaris => Solaris 2.X makefile makefile.solaris => Solaris 2.X makefile
(gcc, creates libpng12.so.0.1.2.26) (gcc, creates libpng12.so.0.1.2.27beta01)
makefile.so9 => Solaris 9 makefile makefile.so9 => Solaris 9 makefile
(gcc, creates libpng12.so.0.1.2.26) (gcc, creates libpng12.so.0.1.2.27beta01)
makefile.32sunu => Sun Ultra 32-bit makefile makefile.32sunu => Sun Ultra 32-bit makefile
makefile.64sunu => Sun Ultra 64-bit makefile makefile.64sunu => Sun Ultra 64-bit makefile
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc

4
Y2KINFO
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@ -1,13 +1,13 @@
Y2K compliance in libpng: Y2K compliance in libpng:
========================= =========================
April 2, 2008 April 12, 2008
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.26 are Y2K compliant. It is my belief that earlier upward through 1.2.27beta01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer Libpng only has three year fields. One is a 2-byte unsigned integer

24
configure vendored
View File

@ -1,6 +1,6 @@
#! /bin/sh #! /bin/sh
# Guess values for system-dependent variables and create Makefiles. # Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61 for libpng 1.2.26. # Generated by GNU Autoconf 2.61 for libpng 1.2.27beta01.
# #
# Report bugs to <png-mng-implement@lists.sourceforge.net>. # Report bugs to <png-mng-implement@lists.sourceforge.net>.
# #
@ -728,8 +728,8 @@ SHELL=${CONFIG_SHELL-/bin/sh}
# Identity of this package. # Identity of this package.
PACKAGE_NAME='libpng' PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng' PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.2.26' PACKAGE_VERSION='1.2.27beta01'
PACKAGE_STRING='libpng 1.2.26' PACKAGE_STRING='libpng 1.2.27beta01'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net' PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
ac_unique_file="pngget.c" ac_unique_file="pngget.c"
@ -1406,7 +1406,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing. # 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. # This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF cat <<_ACEOF
\`configure' configures libpng 1.2.26 to adapt to many kinds of systems. \`configure' configures libpng 1.2.27beta01 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]... Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1476,7 +1476,7 @@ fi
if test -n "$ac_init_help"; then if test -n "$ac_init_help"; then
case $ac_init_help in case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.2.26:";; short | recursive ) echo "Configuration of libpng 1.2.27beta01:";;
esac esac
cat <<\_ACEOF cat <<\_ACEOF
@ -1586,7 +1586,7 @@ fi
test -n "$ac_init_help" && exit $ac_status test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then if $ac_init_version; then
cat <<\_ACEOF cat <<\_ACEOF
libpng configure 1.2.26 libpng configure 1.2.27beta01
generated by GNU Autoconf 2.61 generated by GNU Autoconf 2.61
Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
@ -1600,7 +1600,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake. running configure, to aid debugging if configure makes a mistake.
It was created by libpng $as_me 1.2.26, which was It was created by libpng $as_me 1.2.27beta01, which was
generated by GNU Autoconf 2.61. Invocation command line was generated by GNU Autoconf 2.61. Invocation command line was
$ $0 $@ $ $0 $@
@ -2270,7 +2270,7 @@ fi
# Define the identity of the package. # Define the identity of the package.
PACKAGE='libpng' PACKAGE='libpng'
VERSION='1.2.26' VERSION='1.2.27beta01'
cat >>confdefs.h <<_ACEOF cat >>confdefs.h <<_ACEOF
@ -2441,10 +2441,10 @@ fi
PNGLIB_VERSION=1.2.26 PNGLIB_VERSION=1.2.27beta01
PNGLIB_MAJOR=1 PNGLIB_MAJOR=1
PNGLIB_MINOR=2 PNGLIB_MINOR=2
PNGLIB_RELEASE=26 PNGLIB_RELEASE=27
@ -21295,7 +21295,7 @@ exec 6>&1
# report actual input values of CONFIG_FILES etc. instead of their # report actual input values of CONFIG_FILES etc. instead of their
# values after options handling. # values after options handling.
ac_log=" ac_log="
This file was extended by libpng $as_me 1.2.26, which was This file was extended by libpng $as_me 1.2.27beta01, which was
generated by GNU Autoconf 2.61. Invocation command line was generated by GNU Autoconf 2.61. Invocation command line was
CONFIG_FILES = $CONFIG_FILES CONFIG_FILES = $CONFIG_FILES
@ -21348,7 +21348,7 @@ Report bugs to <bug-autoconf@gnu.org>."
_ACEOF _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF cat >>$CONFIG_STATUS <<_ACEOF
ac_cs_version="\\ ac_cs_version="\\
libpng config.status 1.2.26 libpng config.status 1.2.27beta01
configured by $0, generated by GNU Autoconf 2.61, configured by $0, generated by GNU Autoconf 2.61,
with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\" with options \\"`echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`\\"

6
configure.ac
View File

@ -18,15 +18,15 @@ AC_PREREQ(2.59)
dnl Version number stuff here: dnl Version number stuff here:
AC_INIT([libpng], [1.2.26], [png-mng-implement@lists.sourceforge.net]) AC_INIT([libpng], [1.2.27beta01], [png-mng-implement@lists.sourceforge.net])
AM_INIT_AUTOMAKE AM_INIT_AUTOMAKE
dnl stop configure from automagically running automake dnl stop configure from automagically running automake
AM_MAINTAINER_MODE AM_MAINTAINER_MODE
PNGLIB_VERSION=1.2.26 PNGLIB_VERSION=1.2.27beta01
PNGLIB_MAJOR=1 PNGLIB_MAJOR=1
PNGLIB_MINOR=2 PNGLIB_MINOR=2
PNGLIB_RELEASE=26 PNGLIB_RELEASE=27
dnl End of version number stuff dnl End of version number stuff

42
libpng-1.2.26.txt → libpng-1.2.27beta01.txt
View File

@ -1,6 +1,6 @@
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.2.26 - April 2, 2008 libpng version 1.2.27beta01 - April 12, 2008
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2008 Glenn Randers-Pehrson Copyright (c) 1998-2008 Glenn Randers-Pehrson
@ -288,6 +288,11 @@ you can retrieve with
png_get_user_chunk_ptr(png_ptr); png_get_user_chunk_ptr(png_ptr);
If you call the png_set_read_user_chunk_fn() function, then all unknown
chunks will be saved when read, in case your callback function will need
one or more of them. This behavior can be changed with the
png_set_keep_unknown_chunks() function, described below.
At this point, you can set up a callback function that will be At this point, you can set up a callback function that will be
called after each row has been read, which you can use to control called after each row has been read, which you can use to control
a progress meter or the like. It's demonstrated in pngtest.c. a progress meter or the like. It's demonstrated in pngtest.c.
@ -361,6 +366,37 @@ instances of png_set_keep_unknown_chunks(), the final instance will
take precedence. The IHDR and IEND chunks should not be named in take precedence. The IHDR and IEND chunks should not be named in
chunk_list; if they are, libpng will process them normally anyway. chunk_list; if they are, libpng will process them normally anyway.
Here is an example of the usage of png_set_keep_unknown_chunks(),
where the private "vpAg" chunk will later be processed by a user chunk
callback function:
png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
png_byte unused_chunks[]=
{
104, 73, 83, 84, (png_byte) '\0', /* hIST */
105, 84, 88, 116, (png_byte) '\0', /* iTXt */
112, 67, 65, 76, (png_byte) '\0', /* pCAL */
115, 67, 65, 76, (png_byte) '\0', /* sCAL */
115, 80, 76, 84, (png_byte) '\0', /* sPLT */
116, 73, 77, 69, (png_byte) '\0', /* tIME */
};
#endif
...
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* ignore all unknown chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
/* except for vpAg: */
png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
/* also ignore unused known chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
(int)sizeof(unused_chunks)/5);
#endif
The high-level read interface The high-level read interface
At this point there are two ways to proceed; through the high-level At this point there are two ways to proceed; through the high-level
@ -2796,13 +2832,13 @@ application:
IX. Y2K Compliance in libpng IX. Y2K Compliance in libpng
April 2, 2008 April 12, 2008
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.26 are Y2K compliant. It is my belief that earlier upward through 1.2.27beta01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that

55
libpng.3
View File

@ -1,6 +1,6 @@
.TH LIBPNG 3 "April 2, 2008" .TH LIBPNG 3 "April 12, 2008"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.27beta01
.SH SYNOPSIS .SH SYNOPSIS
\fB \fB
#include <png.h>\fP #include <png.h>\fP
@ -410,7 +410,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
.SH LIBPNG.TXT .SH LIBPNG.TXT
libpng.txt - A description on how to use and modify libpng libpng.txt - A description on how to use and modify libpng
libpng version 1.2.26 - April 2, 2008 libpng version 1.2.27beta01 - April 12, 2008
Updated and distributed by Glenn Randers-Pehrson Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net> <glennrp at users.sourceforge.net>
Copyright (c) 1998-2008 Glenn Randers-Pehrson Copyright (c) 1998-2008 Glenn Randers-Pehrson
@ -698,6 +698,11 @@ you can retrieve with
png_get_user_chunk_ptr(png_ptr); png_get_user_chunk_ptr(png_ptr);
If you call the png_set_read_user_chunk_fn() function, then all unknown
chunks will be saved when read, in case your callback function will need
one or more of them. This behavior can be changed with the
png_set_keep_unknown_chunks() function, described below.
At this point, you can set up a callback function that will be At this point, you can set up a callback function that will be
called after each row has been read, which you can use to control called after each row has been read, which you can use to control
a progress meter or the like. It's demonstrated in pngtest.c. a progress meter or the like. It's demonstrated in pngtest.c.
@ -771,6 +776,37 @@ instances of png_set_keep_unknown_chunks(), the final instance will
take precedence. The IHDR and IEND chunks should not be named in take precedence. The IHDR and IEND chunks should not be named in
chunk_list; if they are, libpng will process them normally anyway. chunk_list; if they are, libpng will process them normally anyway.
Here is an example of the usage of png_set_keep_unknown_chunks(),
where the private "vpAg" chunk will later be processed by a user chunk
callback function:
png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
png_byte unused_chunks[]=
{
104, 73, 83, 84, (png_byte) '\0', /* hIST */
105, 84, 88, 116, (png_byte) '\0', /* iTXt */
112, 67, 65, 76, (png_byte) '\0', /* pCAL */
115, 67, 65, 76, (png_byte) '\0', /* sCAL */
115, 80, 76, 84, (png_byte) '\0', /* sPLT */
116, 73, 77, 69, (png_byte) '\0', /* tIME */
};
#endif
...
#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
/* ignore all unknown chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, NULL, 0);
/* except for vpAg: */
png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
/* also ignore unused known chunks: */
png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
(int)sizeof(unused_chunks)/5);
#endif
.SS The high-level read interface .SS The high-level read interface
At this point there are two ways to proceed; through the high-level At this point there are two ways to proceed; through the high-level
@ -3206,13 +3242,13 @@ application:
.SH IX. Y2K Compliance in libpng .SH IX. Y2K Compliance in libpng
April 2, 2008 April 12, 2008
Since the PNG Development group is an ad-hoc body, we can't make Since the PNG Development group is an ad-hoc body, we can't make
an official declaration. an official declaration.
This is your unofficial assurance that libpng from version 0.71 and This is your unofficial assurance that libpng from version 0.71 and
upward through 1.2.26 are Y2K compliant. It is my belief that earlier upward through 1.2.27beta01 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant. versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that Libpng only has three year fields. One is a 2-byte unsigned integer that
@ -3432,6 +3468,9 @@ the first widely used release:
1.2.25 13 10225 12.so.0.25[.0] 1.2.25 13 10225 12.so.0.25[.0]
1.2.26beta01-06 13 10226 12.so.0.26[.0] 1.2.26beta01-06 13 10226 12.so.0.26[.0]
1.2.26rc01 13 10226 12.so.0.26[.0] 1.2.26rc01 13 10226 12.so.0.26[.0]
1.2.26 13 10226 12.so.0.26[.0]
1.0.32 10 10032 10.so.0.32[.0]
1.2.27beta01 13 10227 12.so.0.27[.0]
Henceforth the source version will match the shared-library minor Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be and patch numbers; the shared-library major version number will be
@ -3487,7 +3526,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation. Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.2.26 - April 2, 2008: Libpng version 1.2.27beta01 - April 12, 2008:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc. Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net). Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -3508,7 +3547,7 @@ included in the libpng distribution, the latter shall prevail.)
If you modify libpng you may insert additional notices immediately following If you modify libpng you may insert additional notices immediately following
this sentence. this sentence.
libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are libpng versions 1.2.6, August 15, 2004, through 1.2.27beta01, April 12, 2008, are
Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
distributed according to the same disclaimer and license as libpng-1.2.5 distributed according to the same disclaimer and license as libpng-1.2.5
with the following individual added to the list of Contributing Authors with the following individual added to the list of Contributing Authors
@ -3607,7 +3646,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson Glenn Randers-Pehrson
glennrp at users.sourceforge.net glennrp at users.sourceforge.net
April 2, 2008 April 12, 2008
.\" end of man page .\" end of man page

4
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "April 2, 2008" .TH LIBPNGPF 3 "April 12, 2008"
.SH NAME .SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.2.26 libpng \- Portable Network Graphics (PNG) Reference Library 1.2.27beta01
(private functions) (private functions)
.SH SYNOPSIS .SH SYNOPSIS
\fB#include <png.h>\fP \fB#include <png.h>\fP

2
png.5
View File

@ -1,4 +1,4 @@
.TH PNG 5 "April 2, 2008" .TH PNG 5 "April 12, 2008"
.SH NAME .SH NAME
png \- Portable Network Graphics (PNG) format png \- Portable Network Graphics (PNG) format
.SH DESCRIPTION .SH DESCRIPTION

4
png.c
View File

@ -13,7 +13,7 @@
#include "png.h" #include "png.h"
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_26 Your_png_h_is_not_version_1_2_26; typedef version_1_2_27beta01 Your_png_h_is_not_version_1_2_27beta01;
/* Version information for C files. This had better match the version /* Version information for C files. This had better match the version
* string defined in png.h. */ * string defined in png.h. */
@ -693,7 +693,7 @@ png_charp PNGAPI
png_get_copyright(png_structp png_ptr) png_get_copyright(png_structp png_ptr)
{ {
png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */ png_ptr = png_ptr; /* silence compiler warning about unused png_ptr */
return ((png_charp) "\n libpng version 1.2.26 - April 2, 2008\n\ return ((png_charp) "\n libpng version 1.2.27beta01 - April 12, 2008\n\
Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\ Copyright (c) 1998-2008 Glenn Randers-Pehrson\n\
Copyright (c) 1996-1997 Andreas Dilger\n\ Copyright (c) 1996-1997 Andreas Dilger\n\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n"); Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.\n");

27
png.h
View File

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library /* png.h - header file for PNG reference library
* *
* libpng version 1.2.26 - April 2, 2008 * libpng version 1.2.27beta01 - April 12, 2008
* Copyright (c) 1998-2008 Glenn Randers-Pehrson * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -9,7 +9,7 @@
* Authors and maintainers: * Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * 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 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.2.26 - April 2, 2008: Glenn * libpng versions 0.97, January 1998, through 1.2.27beta01 - April 12, 2008: Glenn
* See also "Contributing Authors", below. * See also "Contributing Authors", below.
* *
* Note about libpng version numbers: * Note about libpng version numbers:
@ -181,6 +181,9 @@
* 1.2.25 13 10225 12.so.0.25[.0] * 1.2.25 13 10225 12.so.0.25[.0]
* 1.2.26beta01-06 13 10226 12.so.0.26[.0] * 1.2.26beta01-06 13 10226 12.so.0.26[.0]
* 1.2.26rc01 13 10226 12.so.0.26[.0] * 1.2.26rc01 13 10226 12.so.0.26[.0]
* 1.2.26 13 10226 12.so.0.26[.0]
* 1.0.32 10 10032 10.so.0.32[.0]
* 1.2.27beta01 13 10227 12.so.0.27[.0]
* *
* Henceforth the source version will match the shared-library major * Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be * and minor numbers; the shared-library major version number will be
@ -210,7 +213,7 @@
* If you modify libpng you may insert additional notices immediately following * If you modify libpng you may insert additional notices immediately following
* this sentence. * this sentence.
* *
* libpng versions 1.2.6, August 15, 2004, through 1.2.26, April 2, 2008, are * libpng versions 1.2.6, August 15, 2004, through 1.2.27beta01, April 12, 2008, are
* Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are * Copyright (c) 2004, 2006-2008 Glenn Randers-Pehrson, and are
* distributed according to the same disclaimer and license as libpng-1.2.5 * distributed according to the same disclaimer and license as libpng-1.2.5
* with the following individual added to the list of Contributing Authors: * with the following individual added to the list of Contributing Authors:
@ -322,13 +325,13 @@
* Y2K compliance in libpng: * Y2K compliance in libpng:
* ========================= * =========================
* *
* April 2, 2008 * April 12, 2008
* *
* Since the PNG Development group is an ad-hoc body, we can't make * Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration. * an official declaration.
* *
* This is your unofficial assurance that libpng from version 0.71 and * This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.2.26 are Y2K compliant. It is my belief that earlier * upward through 1.2.27beta01 are Y2K compliant. It is my belief that earlier
* versions were also Y2K compliant. * versions were also Y2K compliant.
* *
* Libpng only has three year fields. One is a 2-byte unsigned integer * Libpng only has three year fields. One is a 2-byte unsigned integer
@ -384,9 +387,9 @@
*/ */
/* Version information for png.h - this should match the version in png.c */ /* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.2.26" #define PNG_LIBPNG_VER_STRING "1.2.27beta01"
#define PNG_HEADER_VERSION_STRING \ #define PNG_HEADER_VERSION_STRING \
" libpng version 1.2.26 - April 2, 2008\n" " libpng version 1.2.27beta01 - April 12, 2008\n"
#define PNG_LIBPNG_VER_SONUM 0 #define PNG_LIBPNG_VER_SONUM 0
#define PNG_LIBPNG_VER_DLLNUM 13 #define PNG_LIBPNG_VER_DLLNUM 13
@ -394,11 +397,11 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1 #define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 2 #define PNG_LIBPNG_VER_MINOR 2
#define PNG_LIBPNG_VER_RELEASE 26 #define PNG_LIBPNG_VER_RELEASE 27
/* This should match the numeric part of the final component of /* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero: */ * PNG_LIBPNG_VER_STRING, omitting any leading zero: */
#define PNG_LIBPNG_VER_BUILD 0 #define PNG_LIBPNG_VER_BUILD 01
/* Release Status */ /* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1 #define PNG_LIBPNG_BUILD_ALPHA 1
@ -415,14 +418,14 @@
#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with #define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
PNG_LIBPNG_BUILD_PRIVATE */ PNG_LIBPNG_BUILD_PRIVATE */
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE #define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
/* Careful here. At one time, Guy wanted to use 082, but that would be octal. /* Careful here. At one time, Guy wanted to use 082, but that would be octal.
* We must not include leading zeros. * We must not include leading zeros.
* Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only * 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 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */ * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release */
#define PNG_LIBPNG_VER 10226 /* 1.2.26 */ #define PNG_LIBPNG_VER 10227 /* 1.2.27 */
#ifndef PNG_VERSION_INFO_ONLY #ifndef PNG_VERSION_INFO_ONLY
/* include the compression library's header */ /* include the compression library's header */
@ -1439,7 +1442,7 @@ struct png_struct_def
/* This triggers a compiler error in png.c, if png.c and png.h /* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number. * do not agree upon the version number.
*/ */
typedef png_structp version_1_2_26; typedef png_structp version_1_2_27beta01;
typedef png_struct FAR * FAR * png_structpp; typedef png_struct FAR * FAR * png_structpp;

2
pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng /* pngconf.h - machine configurable file for libpng
* *
* libpng version 1.2.26 - April 2, 2008 * libpng version 1.2.27beta01 - April 12, 2008
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

18
pngpread.c
View File

@ -1,7 +1,7 @@
/* pngpread.c - read a png file in push mode /* pngpread.c - read a png file in push mode
* *
* Last changed in libpng 1.2.26 [April 2, 2008] * Last changed in libpng 1.2.27 [April 12, 2008]
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1502,9 +1502,14 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
png_sizeof(png_ptr->unknown_chunk.name)); png_sizeof(png_ptr->unknown_chunk.name));
png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]='\0'; png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1]='\0';
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_ptr->unknown_chunk.size = (png_size_t)length; png_ptr->unknown_chunk.size = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); if (length == 0)
png_ptr->unknown_chunk.data = NULL;
else
{
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if(png_ptr->read_user_chunk_fn != NULL) if(png_ptr->read_user_chunk_fn != NULL)
{ {
@ -1527,8 +1532,11 @@ png_push_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32
else else
#endif #endif
png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
png_free(png_ptr, png_ptr->unknown_chunk.data); if (png_ptr->unknown_chunk.data)
png_ptr->unknown_chunk.data = NULL; {
png_free(png_ptr, png_ptr->unknown_chunk.data);
png_ptr->unknown_chunk.data = NULL;
}
} }
else else
#endif #endif

32
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file /* pngrutil.c - utilities to read a PNG file
* *
* Last changed in libpng 1.2.26 [April 2, 2008] * Last changed in libpng 1.2.27 [April 12, 2008]
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -1241,15 +1241,9 @@ void /* PRIVATE */
png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length) png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
{ {
png_byte readbuf[PNG_MAX_PALETTE_LENGTH]; png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
int bit_mask;
png_debug(1, "in png_handle_tRNS\n"); png_debug(1, "in png_handle_tRNS\n");
/* For non-indexed color, mask off any bits in the tRNS value that
* exceed the bit depth. Some creators were writing extra bits there.
* This is not needed for indexed color. */
bit_mask = (1 << png_ptr->bit_depth) - 1;
if (!(png_ptr->mode & PNG_HAVE_IHDR)) if (!(png_ptr->mode & PNG_HAVE_IHDR))
png_error(png_ptr, "Missing IHDR before tRNS"); png_error(png_ptr, "Missing IHDR before tRNS");
else if (png_ptr->mode & PNG_HAVE_IDAT) else if (png_ptr->mode & PNG_HAVE_IDAT)
@ -1278,7 +1272,7 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
png_crc_read(png_ptr, buf, 2); png_crc_read(png_ptr, buf, 2);
png_ptr->num_trans = 1; png_ptr->num_trans = 1;
png_ptr->trans_values.gray = png_get_uint_16(buf) & bit_mask; png_ptr->trans_values.gray = png_get_uint_16(buf);
} }
else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB) else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
{ {
@ -1292,9 +1286,9 @@ png_handle_tRNS(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
} }
png_crc_read(png_ptr, buf, (png_size_t)length); png_crc_read(png_ptr, buf, (png_size_t)length);
png_ptr->num_trans = 1; png_ptr->num_trans = 1;
png_ptr->trans_values.red = png_get_uint_16(buf) & bit_mask; png_ptr->trans_values.red = png_get_uint_16(buf);
png_ptr->trans_values.green = png_get_uint_16(buf + 2) & bit_mask; png_ptr->trans_values.green = png_get_uint_16(buf + 2);
png_ptr->trans_values.blue = png_get_uint_16(buf + 4) & bit_mask; png_ptr->trans_values.blue = png_get_uint_16(buf + 4);
} }
else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
{ {
@ -2227,9 +2221,14 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
(png_charp)png_ptr->chunk_name, (png_charp)png_ptr->chunk_name,
png_sizeof(png_ptr->unknown_chunk.name)); png_sizeof(png_ptr->unknown_chunk.name));
png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0'; png_ptr->unknown_chunk.name[png_sizeof(png_ptr->unknown_chunk.name)-1] = '\0';
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_ptr->unknown_chunk.size = (png_size_t)length; png_ptr->unknown_chunk.size = (png_size_t)length;
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length); if (length == 0)
png_ptr->unknown_chunk.data = NULL;
else
{
png_ptr->unknown_chunk.data = (png_bytep)png_malloc(png_ptr, length);
png_crc_read(png_ptr, (png_bytep)png_ptr->unknown_chunk.data, length);
}
#if defined(PNG_READ_USER_CHUNKS_SUPPORTED) #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
if(png_ptr->read_user_chunk_fn != NULL) if(png_ptr->read_user_chunk_fn != NULL)
{ {
@ -2252,8 +2251,11 @@ png_handle_unknown(png_structp png_ptr, png_infop info_ptr, png_uint_32 length)
else else
#endif #endif
png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1); png_set_unknown_chunks(png_ptr, info_ptr, &png_ptr->unknown_chunk, 1);
png_free(png_ptr, png_ptr->unknown_chunk.data); if (png_ptr->unknown_chunk.data)
png_ptr->unknown_chunk.data = NULL; {
png_free(png_ptr, png_ptr->unknown_chunk.data);
png_ptr->unknown_chunk.data = NULL;
}
} }
else else
#endif #endif

55
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct /* pngset.c - storage of image information into info struct
* *
* Last changed in libpng 1.2.25 [February 18, 2008] * Last changed in libpng 1.2.27 [April 12, 2008]
* For conditions of distribution and use, see copyright notice in png.h * For conditions of distribution and use, see copyright notice in png.h
* Copyright (c) 1998-2008 Glenn Randers-Pehrson * Copyright (c) 1998-2008 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -938,6 +938,18 @@ png_set_tRNS(png_structp png_ptr, png_infop info_ptr,
if (trans_values != NULL) if (trans_values != NULL)
{ {
int sample_max = (1 << info_ptr->bit_depth);
if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
(int)trans_values->gray > sample_max) ||
(info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
((int)trans_values->red > sample_max ||
(int)trans_values->green > sample_max ||
(int)trans_values->blue > sample_max)))
{
png_warning(png_ptr,
"Ignoring tRNS chunk with out-of-range samples for bit_depth");
return;
}
png_memcpy(&(info_ptr->trans_values), trans_values, png_memcpy(&(info_ptr->trans_values), trans_values,
png_sizeof(png_color_16)); png_sizeof(png_color_16));
if (num_trans == 0) if (num_trans == 0)
@ -1040,28 +1052,31 @@ png_set_unknown_chunks(png_structp png_ptr,
for (i = 0; i < num_unknowns; i++) for (i = 0; i < num_unknowns; i++)
{ {
png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
png_unknown_chunkp from = unknowns + i; png_unknown_chunkp from = unknowns + i;
png_memcpy((png_charp)to->name, png_memcpy((png_charp)to->name,
(png_charp)from->name, (png_charp)from->name,
png_sizeof(from->name)); png_sizeof(from->name));
to->name[png_sizeof(to->name)-1] = '\0'; to->name[png_sizeof(to->name)-1] = '\0';
to->size = from->size;
/* note our location in the read or write sequence */
to->location = (png_byte)(png_ptr->mode & 0xff);
to->data = (png_bytep)png_malloc_warn(png_ptr, from->size); if (from->size == 0)
if (to->data == NULL) to->data=NULL;
{ else
png_warning(png_ptr, {
to->data = (png_bytep)png_malloc_warn(png_ptr, from->size);
if (to->data == NULL)
{
png_warning(png_ptr,
"Out of memory while processing unknown chunk."); "Out of memory while processing unknown chunk.");
} to->size=0;
else }
{ else
png_memcpy(to->data, from->data, from->size); png_memcpy(to->data, from->data, from->size);
to->size = from->size; }
/* note our location in the read or write sequence */
to->location = (png_byte)(png_ptr->mode & 0xff);
}
} }
info_ptr->unknown_chunks = np; info_ptr->unknown_chunks = np;

2
pngtest.c
View File

@ -1553,4 +1553,4 @@ main(int argc, char *argv[])
} }
/* Generate a compiler error if there is an old png.h in the search path. */ /* Generate a compiler error if there is an old png.h in the search path. */
typedef version_1_2_26 your_png_h_is_not_version_1_2_26; typedef version_1_2_27beta01 your_png_h_is_not_version_1_2_27beta01;

2
pngwrite.c
View File

@ -112,6 +112,8 @@ png_write_info_before_PLTE(png_structp png_ptr, png_infop info_ptr)
((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS || ((up->name[3] & 0x20) || keep == PNG_HANDLE_CHUNK_ALWAYS ||
(png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS))) (png_ptr->flags & PNG_FLAG_KEEP_UNSAFE_CHUNKS)))
{ {
if (up->size == 0)
png_warning(png_ptr, "Writing zero-length unknown chunk");
png_write_chunk(png_ptr, up->name, up->data, up->size); png_write_chunk(png_ptr, up->name, up->data, up->size);
} }
} }

4
scripts/CMakeLists.txt
View File

@ -6,7 +6,7 @@ project(PNG)
set(PNGLIB_MAJOR 1) set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 2) set(PNGLIB_MINOR 2)
set(PNGLIB_RELEASE 26) set(PNGLIB_RELEASE 27)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR}) set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE}) set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@ -169,7 +169,7 @@ configure_file(${PNG_SOURCE_DIR}/scripts/libpng-config.in
# SET UP LINKS # SET UP LINKS
set_target_properties(${PNG_LIB_NAME} PROPERTIES set_target_properties(${PNG_LIB_NAME} PROPERTIES
# VERSION 0.${PNGLIB_RELEASE}.1.2.26 # VERSION 0.${PNGLIB_RELEASE}.1.2.27beta01
VERSION 0.${PNGLIB_RELEASE}.0 VERSION 0.${PNGLIB_RELEASE}.0
SOVERSION 0 SOVERSION 0
CLEAN_DIRECT_OUTPUT 1) CLEAN_DIRECT_OUTPUT 1)

2
scripts/libpng-config-head.in
View File

@ -8,7 +8,7 @@
# Modeled after libxml-config. # Modeled after libxml-config.
version=1.2.26 version=1.2.27beta01
prefix="" prefix=""
libdir="" libdir=""
libs="" libs=""

2
scripts/libpng.pc-configure.in
View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
Name: libpng Name: libpng
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.2.26 Version: 1.2.27beta01
Libs: -L${libdir} -lpng12 Libs: -L${libdir} -lpng12
Cflags: -I${includedir} @LIBPNG_NO_MMX@ Cflags: -I${includedir} @LIBPNG_NO_MMX@

2
scripts/libpng.pc.in
View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng12
Name: libpng Name: libpng
Description: Loads and saves PNG files Description: Loads and saves PNG files
Version: 1.2.26 Version: 1.2.27beta01
Libs: -L${libdir} -lpng12 Libs: -L${libdir} -lpng12
Cflags: -I${includedir} Cflags: -I${includedir}

2
scripts/makefile.32sunu
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.64sunu
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.aix
View File

@ -20,7 +20,7 @@ LN_SF = ln -f -s
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
prefix=/usr/local prefix=/usr/local

2
scripts/makefile.beos
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.cygwin
View File

@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
CYGDLL = 12 CYGDLL = 12
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=cygpng$(CYGDLL).dll SHAREDLIB=cygpng$(CYGDLL).dll

2
scripts/makefile.darwin
View File

@ -19,7 +19,7 @@ ZLIBINC=../zlib
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.dec
View File

@ -5,7 +5,7 @@
# Library name: # Library name:
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.elf
View File

@ -12,7 +12,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.gcmmx
View File

@ -14,7 +14,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hp64
View File

@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hpgcc
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.hpux
View File

@ -18,7 +18,7 @@ ZLIBINC=/opt/zlib/include
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.linux
View File

@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.mingw
View File

@ -74,7 +74,7 @@ CFLAGS= $(strip $(MINGW_CCFLAGS) $(addprefix -I,$(ZLIBINC)) \
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
MINGDLL = 12 MINGDLL = 12
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
SHAREDLIB=libpng$(MINGDLL).dll SHAREDLIB=libpng$(MINGDLL).dll

2
scripts/makefile.ne12bsd
View File

@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng12
LIB= png12 LIB= png12
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.26 SHLIB_MINOR= 1.2.27beta01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.netbsd
View File

@ -14,7 +14,7 @@ INCSDIR=${LOCALBASE}/include/libpng
LIB= png LIB= png
SHLIB_MAJOR= 3 SHLIB_MAJOR= 3
SHLIB_MINOR= 1.2.26 SHLIB_MINOR= 1.2.27beta01
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \ SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \ pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.nommx
View File

@ -7,7 +7,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.openbsd
View File

@ -8,7 +8,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 0 SHLIB_MAJOR= 0
SHLIB_MINOR= 1.2.26 SHLIB_MINOR= 1.2.27beta01
LIB= png LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \ SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \

2
scripts/makefile.sco
View File

@ -9,7 +9,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.sggcc
View File

@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.sgi
View File

@ -6,7 +6,7 @@
# Library name: # Library name:
LIBNAME=libpng12 LIBNAME=libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.so9
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
LIBNAME = libpng12 LIBNAME = libpng12

2
scripts/makefile.solaris
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/makefile.solaris-x86
View File

@ -8,7 +8,7 @@
# Library name: # Library name:
LIBNAME = libpng12 LIBNAME = libpng12
PNGMAJ = 0 PNGMAJ = 0
PNGMIN = 1.2.26 PNGMIN = 1.2.27beta01
PNGVER = $(PNGMAJ).$(PNGMIN) PNGVER = $(PNGMAJ).$(PNGMIN)
# Shared library names: # Shared library names:

2
scripts/pngos2.def
View File

@ -2,7 +2,7 @@
; PNG.LIB module definition file for OS/2 ; PNG.LIB module definition file for OS/2
;---------------------------------------- ;----------------------------------------
; Version 1.2.26 ; Version 1.2.27beta01
LIBRARY PNG LIBRARY PNG
DESCRIPTION "PNG image compression library for OS/2" DESCRIPTION "PNG image compression library for OS/2"

2
scripts/pngw32.def
View File

@ -5,7 +5,7 @@
LIBRARY LIBRARY
EXPORTS EXPORTS
;Version 1.2.26 ;Version 1.2.27beta01
png_build_grayscale_palette @1 png_build_grayscale_palette @1
png_check_sig @2 png_check_sig @2
png_chunk_error @3 png_chunk_error @3