1 
   2 This copy of the libpng notices is provided for your convenience.  In case of
   3 any discrepancy between this copy and the notices in the file png.h that is
   4 included in the libpng distribution, the latter shall prevail.
   5 
   6 COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
   7 
   8 If you modify libpng you may insert additional notices immediately following
   9 this sentence.
  10 
  11 This code is released under the libpng license.
  12 
  13 libpng versions 1.0.7, July 1, 2000 through 1.6.28, January 5, 2017 are
  14 Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
  15 derived from libpng-1.0.6, and are distributed according to the same
  16 disclaimer and license as libpng-1.0.6 with the following individuals
  17 added 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    Mandar Sahastrabuddhe
  26 
  27 and with the following additions to the disclaimer:
  28 
  29    There is no warranty against interference with your enjoyment of the
  30    library or against infringement.  There is no warranty that our
  31    efforts or the library will fulfill any of your particular purposes
  32    or needs.  This library is provided with all faults, and the entire
  33    risk of satisfactory quality, performance, accuracy, and effort is with
  34    the user.
  35 
  36 Some files in the "contrib" directory and some configure-generated
  37 files that are distributed with libpng have other copyright owners and
  38 are released under other open source licenses.
  39 
  40 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
  41 Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
  42 libpng-0.96, and are distributed according to the same disclaimer and
  43 license as libpng-0.96, with the following individuals added to the list
  44 of Contributing Authors:
  45 
  46    Tom Lane
  47    Glenn Randers-Pehrson
  48    Willem van Schaik
  49 
  50 libpng versions 0.89, June 1996, through 0.96, May 1997, are
  51 Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
  52 and are distributed according to the same disclaimer and license as
  53 libpng-0.88, with the following individuals added to the list of
  54 Contributing Authors:
  55 
  56    John Bowler
  57    Kevin Bracey
  58    Sam Bushell
  59    Magnus Holmgren
  60    Greg Roelofs
  61    Tom Tanner
  62 
  63 Some files in the "scripts" directory have other copyright owners
  64 but are released under this license.
  65 
  66 libpng versions 0.5, May 1995, through 0.88, January 1996, are
  67 Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  68 
  69 For the purposes of this copyright and license, "Contributing Authors"
  70 is defined as the following set of individuals:
  71 
  72    Andreas Dilger
  73    Dave Martindale
  74    Guy Eric Schalnat
  75    Paul Schmidt
  76    Tim Wegner
  77 
  78 The PNG Reference Library is supplied "AS IS".  The Contributing Authors
  79 and Group 42, Inc. disclaim all warranties, expressed or implied,
  80 including, without limitation, the warranties of merchantability and of
  81 fitness for any purpose.  The Contributing Authors and Group 42, Inc.
  82 assume no liability for direct, indirect, incidental, special, exemplary,
  83 or consequential damages, which may result from the use of the PNG
  84 Reference Library, even if advised of the possibility of such damage.
  85 
  86 Permission is hereby granted to use, copy, modify, and distribute this
  87 source code, or portions hereof, for any purpose, without fee, subject
  88 to the following restrictions:
  89 
  90   1. The origin of this source code must not be misrepresented.
  91 
  92   2. Altered versions must be plainly marked as such and must not
  93      be misrepresented as being the original source.
  94 
  95   3. This Copyright notice may not be removed or altered from any
  96      source or altered source distribution.
  97 
  98 The Contributing Authors and Group 42, Inc. specifically permit, without
  99 fee, and encourage the use of this source code as a component to
 100 supporting the PNG file format in commercial products.  If you use this
 101 source code in a product, acknowledgment is not required but would be
 102 appreciated.
 103 
 104 END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
 105 
 106 TRADEMARK:
 107 
 108 The name "libpng" has not been registered by the Copyright owner
 109 as a trademark in any jurisdiction.  However, because libpng has
 110 been distributed and maintained world-wide, continually since 1995,
 111 the Copyright owner claims "common-law trademark protection" in any
 112 jurisdiction where common-law trademark is recognized.
 113 
 114 OSI CERTIFICATION:
 115 
 116 Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
 117 a certification mark of the Open Source Initiative. OSI has not addressed
 118 the additional disclaimers inserted at version 1.0.7.
 119 
 120 EXPORT CONTROL:
 121 
 122 The Copyright owner believes that the Export Control Classification
 123 Number (ECCN) for libpng is EAR99, which means not subject to export
 124 controls or International Traffic in Arms Regulations (ITAR) because
 125 it is open source, publicly available software, that does not contain
 126 any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
 127 734.7(b).
 128 
 129 Glenn Randers-Pehrson
 130 glennrp at users.sourceforge.net
 131 January 5, 2017