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Chapter 12: Appendix
The Libpng License Notices
This copy of the libpng notices is provided for your
convenience. In case of any discrepancy between this
copy and the notices in the file png.h that is included in
the libpng distribution, the latter shall prevail.
COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
If you modify libpng you may insert additional notices
immediately following this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.2.41,
December 3, 2009, are Copyright (c) 2004, 2006-2009
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:
Cosmin Truta
libpng versions 1.0.7, July 1, 2000, through 1.2.5 -
October 3, 2002, are Copyright (c) 2000-2002 Glenn
Randers-Pehrson, and are distributed according to the
same disclaimer and license as libpng-1.0.6 with the
following individuals added to the list of Contributing
Authors:
Simon-Pierre Cadieux
Eric S. Raymond
Gilles Vollant
and with the following additions to the disclaimer:
There is no warranty against interference with your
enjoyment of the library or against infringement.
There is no warranty that our efforts or the library will
fulfill any of your particular purposes or needs. This
library is provided with all faults, and the entire risk of
satisfactory quality, performance, accuracy, and effort
is with the user.
libpng versions 0.97, January 1998, through 1.0.6,
March 20, 2000, are Copyright (c) 1998, 1999 Glenn
Randers-Pehrson, and are distributed according to the
same disclaimer and license as libpng-0.96, with the
following individuals added to the list of Contributing
Authors:
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
libpng versions 0.89, June 1996, through 0.96, May
1997, are Copyright (c) 1996, 1997 Andreas Dilger , and
are distributed according to the same disclaimer and
license as libpng-0.88, with the following individuals
added to the list of Contributing Authors:
John Bowler
Kevin Bracey
Sam Bushell
Magnus Holmgren
Greg Roelofs
Tom Tanner
libpng versions 0.5, May 1995, through 0.88, January
1996, are Copyright (c) 1995, 1996 Guy Eric Schalnat,
Group 42, Inc.
For the purposes of this copyright and license,
“Contributing Authors” is defined as the following set of
individuals:
Andreas Dilger
Dave Martindale
Guy Eric Schalnat
Paul Schmidt
Tim Wegner
The PNG Reference Library is supplied “AS IS”. The
Contributing Authors and Group 42, Inc. disclaim all
warranties, expressed or implied, including, without
limitation, the warranties of merchantability and of
fitness for any purpose. The Contributing Authors and
Group 42, Inc. assume no liability for direct, indirect,
incidental, special, exemplary, or consequential
damages, which may result from the use of the PNG
Reference Library, even if advised of the possibility of
such damage.
Permission is hereby granted to use, copy, modify, and
distribute this source code, or portions hereof, for any
purpose, without fee, subject to the following
restrictions:
1. The origin of this source code must not be
misrepresented.
2. Altered versions must be plainly marked as such and
must not be misrepresented as being the original
source.
3. This Copyright notice may not be removed or altered
from any source or altered source distribution.
The Contributing Authors and Group 42, Inc. specifically
permit, without fee, and encourage the use of this
source code as a component to supporting the PNG file
format in commercial products. If you use this source
code in a product, acknowledgment is not required but
would be appreciated.
A “png_get_copyright” function is available, for
convenient use in “about” boxes and the like:
printf(“%s”,png_get_copyright(NULL));
Also, the PNG logo (in PNG format, of course) is
supplied in the files “pngbar.png” and “pngbar.jpg”
(88x31) and “pngnow.png” (98x31).
Libpng is OSI Certified Open Source Software. OSI
Certified Open Source is a certification mark of the
Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
December 3, 2009