1
  2This copy of the libpng notices is provided for your convenience.  In case of
  3any discrepancy between this copy and the notices in the file png.h that is
  4included in the libpng distribution, the latter shall prevail.
  5
  6COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
  7
  8If you modify libpng you may insert additional notices immediately following
  9this sentence.
 10
 11This code is released under the libpng license.
 12
 13libpng versions 1.2.6, August 15, 2004, through 1.6.17, March 26, 2015, are
 14Copyright (c) 2004, 2006-2015 Glenn Randers-Pehrson, and are
 15distributed according to the same disclaimer and license as libpng-1.2.5
 16with the following individual added to the list of Contributing Authors
 17
 18   Cosmin Truta
 19
 20libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
 21Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
 22distributed according to the same disclaimer and license as libpng-1.0.6
 23with the following individuals added to the list of Contributing Authors
 24
 25   Simon-Pierre Cadieux
 26   Eric S. Raymond
 27   Gilles Vollant
 28
 29and with the following additions to the disclaimer:
 30
 31   There is no warranty against interference with your enjoyment of the
 32   library or against infringement.  There is no warranty that our
 33   efforts or the library will fulfill any of your particular purposes
 34   or needs.  This library is provided with all faults, and the entire
 35   risk of satisfactory quality, performance, accuracy, and effort is with
 36   the user.
 37
 38libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
 39Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
 40distributed according to the same disclaimer and license as libpng-0.96,
 41with the following individuals added to the list of Contributing Authors:
 42
 43   Tom Lane
 44   Glenn Randers-Pehrson
 45   Willem van Schaik
 46
 47libpng versions 0.89, June 1996, through 0.96, May 1997, are
 48Copyright (c) 1996, 1997 Andreas Dilger
 49Distributed according to the same disclaimer and license as libpng-0.88,
 50with the following individuals added to the list of Contributing Authors:
 51
 52   John Bowler
 53   Kevin Bracey
 54   Sam Bushell
 55   Magnus Holmgren
 56   Greg Roelofs
 57   Tom Tanner
 58
 59libpng versions 0.5, May 1995, through 0.88, January 1996, are
 60Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
 61
 62For the purposes of this copyright and license, "Contributing Authors"
 63is defined as the following set of individuals:
 64
 65   Andreas Dilger
 66   Dave Martindale
 67   Guy Eric Schalnat
 68   Paul Schmidt
 69   Tim Wegner
 70
 71The PNG Reference Library is supplied "AS IS".  The Contributing Authors
 72and Group 42, Inc. disclaim all warranties, expressed or implied,
 73including, without limitation, the warranties of merchantability and of
 74fitness for any purpose.  The Contributing Authors and Group 42, Inc.
 75assume no liability for direct, indirect, incidental, special, exemplary,
 76or consequential damages, which may result from the use of the PNG
 77Reference Library, even if advised of the possibility of such damage.
 78
 79Permission is hereby granted to use, copy, modify, and distribute this
 80source code, or portions hereof, for any purpose, without fee, subject
 81to the following restrictions:
 82
 831. The origin of this source code must not be misrepresented.
 84
 852. Altered versions must be plainly marked as such and must not
 86   be misrepresented as being the original source.
 87
 883. This Copyright notice may not be removed or altered from any
 89   source or altered source distribution.
 90
 91The Contributing Authors and Group 42, Inc. specifically permit, without
 92fee, and encourage the use of this source code as a component to
 93supporting the PNG file format in commercial products.  If you use this
 94source code in a product, acknowledgment is not required but would be
 95appreciated.
 96
 97
 98A "png_get_copyright" function is available, for convenient use in "about"
 99boxes and the like:
100
101   printf("%s",png_get_copyright(NULL));
102
103Also, the PNG logo (in PNG format, of course) is supplied in the
104files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
105
106Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a
107certification mark of the Open Source Initiative.
108
109Glenn Randers-Pehrson
110glennrp at users.sourceforge.net
111March 26, 2015