dll/3rdparty/libpng/docs/LICENSE

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