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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 1.0.7, July 1, 2000 through 1.6.22rc01, May 14, 2016 are
14Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
15derived from libpng-1.0.6, and are distributed according to the same
16disclaimer and license as libpng-1.0.6 with the following individuals
17added to the list of Contributing Authors:
18
19   Simon-Pierre Cadieux
20   Eric S. Raymond
21   Mans Rullgard
22   Cosmin Truta
23   Gilles Vollant
24   James Yu
25
26and with the following additions to the disclaimer:
27
28   There is no warranty against interference with your enjoyment of the
29   library or against infringement.  There is no warranty that our
30   efforts or the library will fulfill any of your particular purposes
31   or needs.  This library is provided with all faults, and the entire
32   risk of satisfactory quality, performance, accuracy, and effort is with
33   the user.
34
35Some files in the "contrib" directory and some configure-generated
36files that are distributed with libpng have other copyright owners and
37are released under other open source licenses.
38
39libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
40Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
41libpng-0.96, and are distributed according to the same disclaimer and
42license as libpng-0.96, with the following individuals added to the list
43of Contributing Authors:
44
45   Tom Lane
46   Glenn Randers-Pehrson
47   Willem van Schaik
48
49libpng versions 0.89, June 1996, through 0.96, May 1997, are
50Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
51and are distributed according to the same disclaimer and license as
52libpng-0.88, with the following individuals added to the list of
53Contributing Authors:
54
55   John Bowler
56   Kevin Bracey
57   Sam Bushell
58   Magnus Holmgren
59   Greg Roelofs
60   Tom Tanner
61
62Some files in the "scripts" directory have other copyright owners
63but are released under this license.
64
65libpng versions 0.5, May 1995, through 0.88, January 1996, are
66Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
67
68For the purposes of this copyright and license, "Contributing Authors"
69is defined as the following set of individuals:
70
71   Andreas Dilger
72   Dave Martindale
73   Guy Eric Schalnat
74   Paul Schmidt
75   Tim Wegner
76
77The PNG Reference Library is supplied "AS IS".  The Contributing Authors
78and Group 42, Inc. disclaim all warranties, expressed or implied,
79including, without limitation, the warranties of merchantability and of
80fitness for any purpose.  The Contributing Authors and Group 42, Inc.
81assume no liability for direct, indirect, incidental, special, exemplary,
82or consequential damages, which may result from the use of the PNG
83Reference Library, even if advised of the possibility of such damage.
84
85Permission is hereby granted to use, copy, modify, and distribute this
86source code, or portions hereof, for any purpose, without fee, subject
87to the following restrictions:
88
89  1. The origin of this source code must not be misrepresented.
90
91  2. Altered versions must be plainly marked as such and must not
92     be misrepresented as being the original source.
93
94  3. This Copyright notice may not be removed or altered from any
95     source or altered source distribution.
96
97The Contributing Authors and Group 42, Inc. specifically permit, without
98fee, and encourage the use of this source code as a component to
99supporting the PNG file format in commercial products.  If you use this
100source code in a product, acknowledgment is not required but would be
101appreciated.
102
103END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
104
105TRADEMARK:
106
107The name "libpng" has not been registered by the Copyright owner
108as a trademark in any jurisdiction.  However, because libpng has
109been distributed and maintained world-wide, continually since 1995,
110the Copyright owner claims "common-law trademark protection" in any
111jurisdiction where common-law trademark is recognized.
112
113OSI CERTIFICATION:
114
115Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
116a certification mark of the Open Source Initiative. OSI has not addressed
117the additional disclaimers inserted at version 1.0.7.
118
119EXPORT CONTROL:
120
121The Copyright owner believes that the Export Control Classification
122Number (ECCN) for libpng is EAR99, which means not subject to export
123controls or International Traffic in Arms Regulations (ITAR) because
124it is open source, publicly available software, that does not contain
125any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
126734.7(b).
127
128Glenn Randers-Pehrson
129glennrp at users.sourceforge.net
130May 14, 2016
131