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 1.2.6, August 15, 2004, through 1.2.40, September 10, 2009, are

    14 Copyright (c) 2004, 2006-2009 Glenn Randers-Pehrson, and are

    15 distributed according to the same disclaimer and license as libpng-1.2.5

    16 with the following individual added to the list of Contributing Authors

    17 

    18    Cosmin Truta

    19 

    20 libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are

    21 Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are

    22 distributed according to the same disclaimer and license as libpng-1.0.6

    23 with the following individuals added to the list of Contributing Authors

    24 

    25    Simon-Pierre Cadieux

    26    Eric S. Raymond

    27    Gilles Vollant

    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 libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are

    39 Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are

    40 distributed according to the same disclaimer and license as libpng-0.96,

    41 with the following individuals added to the list of Contributing Authors:

    42 

    43    Tom Lane

    44    Glenn Randers-Pehrson

    45    Willem van Schaik

    46 

    47 libpng versions 0.89, June 1996, through 0.96, May 1997, are

    48 Copyright (c) 1996, 1997 Andreas Dilger

    49 Distributed according to the same disclaimer and license as libpng-0.88,

    50 with 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 

    59 libpng versions 0.5, May 1995, through 0.88, January 1996, are

    60 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.

    61 

    62 For the purposes of this copyright and license, "Contributing Authors"

    63 is 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 

    71 The PNG Reference Library is supplied "AS IS".  The Contributing Authors

    72 and Group 42, Inc. disclaim all warranties, expressed or implied,

    73 including, without limitation, the warranties of merchantability and of

    74 fitness for any purpose.  The Contributing Authors and Group 42, Inc.

    75 assume no liability for direct, indirect, incidental, special, exemplary,

    76 or consequential damages, which may result from the use of the PNG

    77 Reference Library, even if advised of the possibility of such damage.

    78 

    79 Permission is hereby granted to use, copy, modify, and distribute this

    80 source code, or portions hereof, for any purpose, without fee, subject

    81 to the following restrictions:

    82 

    83 1. The origin of this source code must not be misrepresented.

    84 

    85 2. Altered versions must be plainly marked as such and must not

    86    be misrepresented as being the original source.

    87 

    88 3. This Copyright notice may not be removed or altered from any

    89    source or altered source distribution.

    90 

    91 The Contributing Authors and Group 42, Inc. specifically permit, without

    92 fee, and encourage the use of this source code as a component to

    93 supporting the PNG file format in commercial products.  If you use this

    94 source code in a product, acknowledgment is not required but would be

    95 appreciated.

    96 

    97 

    98 A "png_get_copyright" function is available, for convenient use in "about"

    99 boxes and the like:

   100 

   101    printf("%s",png_get_copyright(NULL));

   102 

   103 Also, the PNG logo (in PNG format, of course) is supplied in the

   104 files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).

   105 

   106 Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is a

   107 certification mark of the Open Source Initiative.

   108 

   109 Glenn Randers-Pehrson

   110 glennrp at users.sourceforge.net

   111 September 10, 2009