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2 Commits

Author SHA1 Message Date
Cosmin Truta
640204280f Release libpng version 1.6.49 2025-06-12 20:05:46 +03:00
Cosmin Truta
740366c32b doc: Update the png.5 man page to the latest PNG-3 draft 2025-06-12 19:58:06 +03:00
17 changed files with 57 additions and 65 deletions

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@ -1,13 +1,5 @@
libpng 1.6.49.git
=================
This is a development version, not intended to be a public release.
It will be replaced by a public release, or by another development
version, at a later time.
libpng 1.6.48 - April 30, 2025
==============================
libpng 1.6.49 - June 12, 2025
=============================
This is a public release of libpng, intended for use in production code.
@ -17,13 +9,13 @@ Files available for download
Source files with LF line endings (for Unix/Linux):
* libpng-1.6.48.tar.xz (LZMA-compressed, recommended)
* libpng-1.6.48.tar.gz (deflate-compressed)
* libpng-1.6.49.tar.xz (LZMA-compressed, recommended)
* libpng-1.6.49.tar.gz (deflate-compressed)
Source files with CRLF line endings (for Windows):
* lpng1648.7z (LZMA-compressed, recommended)
* lpng1648.zip (deflate-compressed)
* lpng1649.7z (LZMA-compressed, recommended)
* lpng1649.zip (deflate-compressed)
Other information:
@ -33,17 +25,13 @@ Other information:
* TRADEMARK.md
Changes from version 1.6.47 to version 1.6.48
Changes from version 1.6.48 to version 1.6.49
---------------------------------------------
* Fixed the floating-point version of the mDCv setter `png_set_mDCv`.
(Reported by Mohit Bakshi; fixed by John Bowler)
* Added #error directives to discourage the inclusion of private
libpng implementation header files in PNG-supporting applications.
* Added the CMake build option `PNG_LIBCONF_HEADER`, to be used as an
alternative to `DFA_XTRA`.
* Removed the Travis CI configuration files, with heartfelt thanks for
their generous support of our project over the past five years!
* Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
(Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
* Added various fixes and improvements to the build scripts and to
the sample code.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net.

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@ -6261,7 +6261,11 @@ Version 1.6.48 [April 30, 2025]
Removed the Travis CI configuration files, with heartfelt thanks for
their generous support of our project over the past five years!
Version 1.6.49 [TODO]
Version 1.6.49 [June 12, 2025]
Added SIMD-optimized code for the RISC-V Vector Extension (RVV).
(Contributed by Manfred Schlaegl, Dragos Tiselice and Filip Wasil)
Added various fixes and improvements to the build scripts and to
the sample code.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
Subscription is required; visit

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@ -19,8 +19,8 @@ cmake_minimum_required(VERSION 3.14...4.0)
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_REVISION 49)
#set(PNGLIB_SUBREVISION 0)
set(PNGLIB_SUBREVISION "git")
set(PNGLIB_SUBREVISION 0)
#set(PNGLIB_SUBREVISION "git")
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_REVISION})
set(PNGLIB_ABI_VERSION ${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_SHARED_VERSION ${PNGLIB_ABI_VERSION}.${PNGLIB_REVISION}.${PNGLIB_SUBREVISION})

4
README
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@ -1,5 +1,5 @@
README for libpng version 1.6.49.git
====================================
README for libpng version 1.6.49
================================
See the note about version numbers near the top of `png.h`.
See `INSTALL` for instructions on how to install libpng.

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 2.72 for libpng 1.6.49.git.
# Generated by GNU Autoconf 2.72 for libpng 1.6.49.
#
# Report bugs to <png-mng-implement@lists.sourceforge.net>.
#
@ -614,8 +614,8 @@ MAKEFLAGS=
# Identity of this package.
PACKAGE_NAME='libpng'
PACKAGE_TARNAME='libpng'
PACKAGE_VERSION='1.6.49.git'
PACKAGE_STRING='libpng 1.6.49.git'
PACKAGE_VERSION='1.6.49'
PACKAGE_STRING='libpng 1.6.49'
PACKAGE_BUGREPORT='png-mng-implement@lists.sourceforge.net'
PACKAGE_URL=''
@ -1424,7 +1424,7 @@ 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 1.6.49.git to adapt to many kinds of systems.
'configure' configures libpng 1.6.49 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@ -1495,7 +1495,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of libpng 1.6.49.git:";;
short | recursive ) echo "Configuration of libpng 1.6.49:";;
esac
cat <<\_ACEOF
@ -1698,7 +1698,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
libpng configure 1.6.49.git
libpng configure 1.6.49
generated by GNU Autoconf 2.72
Copyright (C) 2023 Free Software Foundation, Inc.
@ -1961,7 +1961,7 @@ 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 1.6.49.git, which was
It was created by libpng $as_me 1.6.49, which was
generated by GNU Autoconf 2.72. Invocation command line was
$ $0$ac_configure_args_raw
@ -3446,7 +3446,7 @@ fi
# Define the identity of the package.
PACKAGE='libpng'
VERSION='1.6.49.git'
VERSION='1.6.49'
printf "%s\n" "#define PACKAGE \"$PACKAGE\"" >>confdefs.h
@ -3665,7 +3665,7 @@ fi
PNGLIB_VERSION=1.6.49.git
PNGLIB_VERSION=1.6.49
PNGLIB_MAJOR=1
PNGLIB_MINOR=6
PNGLIB_RELEASE=49
@ -16419,7 +16419,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=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 1.6.49.git, which was
This file was extended by libpng $as_me 1.6.49, which was
generated by GNU Autoconf 2.72. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@ -16487,7 +16487,7 @@ ac_cs_config_escaped=`printf "%s\n" "$ac_cs_config" | sed "s/^ //; s/'/'\\\\\\\\
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config='$ac_cs_config_escaped'
ac_cs_version="\\
libpng config.status 1.6.49.git
libpng config.status 1.6.49
configured by $0, generated by GNU Autoconf 2.72,
with options \\"\$ac_cs_config\\"

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@ -25,7 +25,7 @@ AC_PREREQ([2.68])
dnl Version number stuff here:
AC_INIT([libpng],[1.6.49.git],[png-mng-implement@lists.sourceforge.net])
AC_INIT([libpng],[1.6.49],[png-mng-implement@lists.sourceforge.net])
AC_CONFIG_MACRO_DIR([scripts/autoconf])
# libpng does not follow GNU file name conventions (hence 'foreign')
@ -46,7 +46,7 @@ dnl automake, so the following is not necessary (and is not defined anyway):
dnl AM_PREREQ([1.11.2])
dnl stop configure from automagically running automake
PNGLIB_VERSION=1.6.49.git
PNGLIB_VERSION=1.6.49
PNGLIB_MAJOR=1
PNGLIB_MINOR=6
PNGLIB_RELEASE=49

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@ -9,7 +9,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng version 1.6.36, December 2018, through 1.6.48 - April 2025
libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
Updated and distributed by Cosmin Truta
Copyright (c) 2018-2025 Cosmin Truta

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@ -1,6 +1,6 @@
.TH LIBPNG 3 "May 1, 2025"
.TH LIBPNG 3 "June 12, 2025"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49.git
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49
.SH SYNOPSIS
\fB#include <png.h>\fP
@ -528,7 +528,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng version 1.6.36, December 2018, through 1.6.48 - April 2025
libpng version 1.6.36, December 2018, through 1.6.49 - June 2025
Updated and distributed by Cosmin Truta
Copyright (c) 2018-2025 Cosmin Truta

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@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "May 1, 2025"
.TH LIBPNGPF 3 "June 12, 2025"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49.git
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.49
.SH SYNOPSIS
\fB#include "pngpriv.h"\fP

6
png.5
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@ -1,4 +1,4 @@
.TH PNG 5 "May 1, 2025"
.TH PNG 5 "June 12, 2025"
.SH NAME
png \- Portable Network Graphics (PNG) format
@ -20,10 +20,10 @@ matching on heterogeneous platforms.
.SH "SEE ALSO"
.BR "libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
.LP
PNG Specification (Third Edition) Candidate Recommendation, March 2025:
PNG Specification (Third Edition) Proposed Recommendation, May 2025:
.IP
.br
https://www.w3.org/TR/2025/CR-png-3-20250313/
https://www.w3.org/TR/2025/PR-png-3-20250515/
.LP
PNG Specification (Second Edition), November 2003:
.IP

4
png.c
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@ -13,7 +13,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_49_git Your_png_h_is_not_version_1_6_49_git;
typedef png_libpng_version_1_6_49 Your_png_h_is_not_version_1_6_49;
/* Sanity check the chunks definitions - PNG_KNOWN_CHUNKS from pngpriv.h and the
* corresponding macro definitions. This causes a compile time failure if
@ -815,7 +815,7 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.49.git" PNG_STRING_NEWLINE \
"libpng version 1.6.49" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2025 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \

16
png.h
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@ -1,6 +1,6 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.49.git
* libpng version 1.6.49
*
* Copyright (c) 2018-2025 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
@ -14,7 +14,7 @@
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.35, July 2018:
* Glenn Randers-Pehrson
* libpng versions 1.6.36, December 2018, through 1.6.48, April 2025:
* libpng versions 1.6.36, December 2018, through 1.6.49, June 2025:
* Cosmin Truta
* See also "Contributing Authors", below.
*/
@ -238,7 +238,7 @@
* ...
* 1.5.30 15 10530 15.so.15.30[.0]
* ...
* 1.6.48 16 10648 16.so.16.48[.0]
* 1.6.49 16 10649 16.so.16.49[.0]
*
* Henceforth the source version will match the shared-library major and
* minor numbers; the shared-library major version number will be used for
@ -274,7 +274,7 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.49.git"
#define PNG_LIBPNG_VER_STRING "1.6.49"
#define PNG_HEADER_VERSION_STRING " libpng version " PNG_LIBPNG_VER_STRING "\n"
/* The versions of shared library builds should stay in sync, going forward */
@ -290,7 +290,7 @@
/* This should be zero for a public release, or non-zero for a
* development version.
*/
#define PNG_LIBPNG_VER_BUILD 1
#define PNG_LIBPNG_VER_BUILD 0
/* Release Status */
#define PNG_LIBPNG_BUILD_ALPHA 1
@ -307,7 +307,7 @@
#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
PNG_LIBPNG_BUILD_PRIVATE */
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_BETA
#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
/* Careful here. At one time, Guy wanted to use 082, but that
* would be octal. We must not include leading zeros.
@ -316,7 +316,7 @@
* From version 1.0.1 it is:
* XXYYZZ, where XX=major, YY=minor, ZZ=release
*/
#define PNG_LIBPNG_VER 10649 /* 1.6.49.git */
#define PNG_LIBPNG_VER 10649 /* 1.6.49 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@ -426,7 +426,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_49_git;
typedef char* png_libpng_version_1_6_49;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*

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@ -1,6 +1,6 @@
/* pngconf.h - machine-configurable file for libpng
*
* libpng version 1.6.49.git
* libpng version 1.6.49
*
* Copyright (c) 2018-2025 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2016,2018 Glenn Randers-Pehrson

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@ -50,7 +50,7 @@
#define STDERR stdout
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_49_git Your_png_h_is_not_version_1_6_49_git;
typedef png_libpng_version_1_6_49 Your_png_h_is_not_version_1_6_49;
/* Ensure that all version numbers in png.h are consistent with one another. */
#if (PNG_LIBPNG_VER != PNG_LIBPNG_VER_MAJOR * 10000 + \

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@ -11,7 +11,7 @@
# Modeled after libxml-config.
version=1.6.49.git
version=1.6.49
prefix=""
libdir=""
libs=""

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@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
Name: libpng
Description: Loads and saves PNG files
Version: 1.6.49.git
Version: 1.6.49
Libs: -L${libdir} -lpng16
Cflags: -I${includedir}

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@ -1,6 +1,6 @@
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.49.git */
/* libpng version 1.6.49 */
/* Copyright (c) 2018-2025 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */