xref: /PHP-7.2/ext/gd/libgd/README (revision 7a8cade3)
1This directory contains the GD library available from
2http://www.boutell.com/gd/
3
4The inclusion of this library with PHP is in response to the
5popularity of the GD extension and the GD library itself.  We felt
6it would be worthwhile to make sure everyone had access to the
7features of GD and by bundling GD with PHP we have a known target to
8work against.
9
10In addition to the above, a number of motivated PHP hackers have
11expressed an interest in extending the functionality of the PHP-GD
12combination.  By putting a version of GD into PHP CVS we have provided
13a sandbox for them to throw sand at each other in.  Any and all
14improvements we make to the GD library will be contributed back to the
15original maintainers of this library at boutell.com.
16
17The following statement is from the original GD package:
18
19  Credits and license terms
20
21   In order to resolve any possible confusion regarding the authorship of
22   gd, the following copyright statement covers all of the authors who
23   have required such a statement. _If you are aware of any oversights in
24   this copyright notice, please contact Thomas Boutell who will be
25   pleased to correct them._
26
27COPYRIGHT STATEMENT FOLLOWS THIS LINE
28
29     Portions copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
30     by Cold Spring Harbor Laboratory. Funded under Grant P41-RR02188 by
31     the National Institutes of Health.
32
33     Portions copyright 1996, 1997, 1998, 1999, 2000, 2001 by
34     Boutell.Com, Inc.
35
36     Portions relating to GD2 format copyright 1999, 2000 Philip Warner.
37
38     Portions relating to PNG copyright 1999, 2000 Greg Roelofs.
39
40     Portions relating to libttf copyright 1999, 2000 John Ellson
41     (ellson@lucent.com).
42
43     Portions relating to JPEG and to color quantization copyright 2000,
44     Doug Becker and copyright (C) 1994-1998, Thomas G. Lane. This
45     software is based in part on the work of the Independent JPEG
46     Group. See the file README-JPEG.TXT for more information.
47
48     Portions relating to WBMP copyright 2000 Maurice Szmurlo and Johan
49     Van den Brande.
50
51     _Permission has been granted to copy, distribute and modify gd in
52     any context without fee, including a commercial application,
53     provided that this notice is present in user-accessible supporting
54     documentation._
55
56     This does not affect your ownership of the derived work itself, and
57     the intent is to assure proper credit for the authors of gd, not to
58     interfere with your productive use of gd. If you have questions,
59     ask. "Derived works" includes all programs that utilize the
60     library. Credit must be given in user-accessible documentation.
61
62     _This software is provided "AS IS."_ The copyright holders disclaim
63     all warranties, either express or implied, including but not
64     limited to implied warranties of merchantability and fitness for a
65     particular purpose, with respect to this code and accompanying
66     documentation.
67
68     Although their code does not appear in gd 2.0.1, the authors wish
69     to thank David Koblas, David Rowley, and Hutchison Avenue Software
70     Corporation for their prior contributions.
71
72END OF COPYRIGHT STATEMENT
73