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Text File | 1995-05-29 | 4.7 KB | 108 lines | [TEXT/CWIE] |
-
- gif2png (version 0.5 beta)
-
- Copyright (C) 1995 Alexander Lehmann
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications (see below), and to alter it and
- redistribute it freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
- 4. Binary only distributions of the software must include the file README
- with the copyright statement. You are welcome to add a copyright
- statement for your modifications and a contact address, though.
-
-
- Note that this program uses the LZW decompression algorithm, which due to
- patent claims probably requires you to license if you use the algorithm
- in a commercial program or distribute this program on a for-profit basis.
- (See http://www.unisys.com)
-
-
- Part of this program (gifread.c) carries the following copyright:
-
- /* +-------------------------------------------------------------------+ */
- /* | Copyright 1990 - 1994, David Koblas. (koblas@netcom.com) | */
- /* | Permission to use, copy, modify, and distribute this software | */
- /* | and its documentation for any purpose and without fee is hereby | */
- /* | granted, provided that the above copyright notice appear in all | */
- /* | copies and that both that copyright notice and this permission | */
- /* | notice appear in supporting documentation. This software is | */
- /* | provided "as is" without express or implied warranty. | */
- /* +-------------------------------------------------------------------+ */
-
- (This file was taken from the Moasic 2.5 distribution, so another copyright
- may apply, but I haven't received any reply from NCSA yet)
-
- Part of the program (437_l1.c) was generated by trans100 written by Kosta
- Kostis <kosta@live.robin.de>.
- This package (great source for character conversion tables) is available as
- ftp://ftp.uni-erlangen.de:pub/doc/ISO/charsets/transXXX.tar.gz, where XXX is
- replaced by a version number.
-
-
- The png sample library is Copyright (c) 1995 Guy Eric Schalnat, Group 42, Inc.
- and is available from ftp://ftp.uu.net/graphics/png/code/pnglib*.zip
-
- The zlib compression library is Copyright (C) 1995 Jean-loup Gailly and Mark
- Adler and is available from ftp://ftp.uu.net/graphics/png/code/zlib-*.tar.gz
-
-
- The PNG specification is Copyright 1995, Thomas Boutell and is available
- from ftp://ftp.uu.net/graphics/png/documents. Obviously without the PNG effort
- this program wouldn't have been possible (or even conceivable).
-
-
- The Graphics Interchange Format(c) is the Copyright property of
- CompuServe Incorporated. GIF(sm) is a Service Mark property of
- CompuServe Incorporated.
-
- The GIF spec is available from any SimTel mirror as msdos/gif/gif89a.zip,
- e.g. on oak.oakland.edu.
-
-
- OK, now that we got this ground covered, we switch to more `normal' tone:
-
- If you are reading this, you have received gif2png either in source or
- precompiled binary form. If you want to compile the program yourself, see
- the file COMPILING.
-
- Note that this program is considered a beta version, it has performed
- satisfactory for me and is fairly complete, though there may be a few bits
- missing. However, with the diversity of computer systems out there, you
- may run into problems both when compiling and running the program.
- If you are converting your GIF collection, you should take care to verify
- that the conversion was successful with any PNG reading program, e.g. QPV.
- The delete option is currently disabled.
-
- The usage of the program is as follows:
-
- gif2png [ -dhi ] [file[.gif]] ...
- -d delete source GIF files after successful conversion
- -i create interlaced PNG files
- -h create histogram chunks for color files
-
- if no source files are listed, stdin is converted to noname.png
- (may not work on non-unix machines)
-
-
- The program will try to preserve the information contained in a GIF file as
- close as possible, including comments, application data. Plain text extensions
- are currently not supported, however this will probably be fixed in a future
- version of the program. If a multi-image GIF is encountered, multiple PNG
- files are created, names file.png, file.p01, file.p02 etc.
-
-
- Alexander Lehmann <alex@hal.rhein-main.de>
-
-