Appendix
Appendix
following individuals added to the list of
Contributing Authors:
Tom Lane
Glenn Randers-Pehrson
Willem van Schaik
libpng versions 0.89, June 1996, through
0.96, May 1997, are Copyright (c) 1996, 1997
Andreas Dilger
Distributed according to the same disclaim-
er 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, exem-
plary, or consequential damages, which
may result from the use of the PNG Refer-
16
En
ence Library, even if advised of the possibili-
ty 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 re-
moved 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, acknowledg-
ment is not required but would be appreci-
ated.
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 Soft-
ware. OSI Certified Open Source is a certifi-
cation mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
January 6, 2011