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- The Independent JPEG Group's JPEG software
- ==========================================
-
- This distribution contains MS-DOS executable copies of version 6 of the
- Independent JPEG Group's free JPEG software. You are welcome to redistribute
- this software and to use it for any purpose, subject to the conditions under
- LEGAL ISSUES, below.
-
- This version of the software runs ONLY on PCs with 386 or better CPUs.
- It is compiled to use 386 32-bit mode, and it runs 25% to 50% faster than
- the plain 16-bit DOS version. It will run in a Windows or OS/2 DOS window
- as well as under plain MS-DOS. You'll need at least a megabyte of extended
- or expanded memory to get decent performance. (For older machines, use the
- plain DOS version of the IJG software, which should be available from the
- same place you got this package.)
-
- For usage instructions, see the file usage.doc. Useful information can also
- be found in the JPEG FAQ (Frequently Asked Questions) article, posted
- regularly in the Usenet newsgroups comp.graphics.misc and news.answers.
-
- Please report any problems with this software to jpeg-info@uunet.uu.net.
-
-
- INSTALLATION
- ============
-
- On most MS-DOS setups, the programs should run as-is. Try just typing
- "cjpeg" or "djpeg" and see if you get a screenful of help info. If not,
- you may have a conflict with your extended or expanded memory manager.
- Get the file ftp.coast.net:/SimTel/vendors/djgpp/djgpp.faq for the latest
- information on resolving such problems. If all else fails, you can always
- use the non-386 version of the IJG programs.
-
- For best results, you should set the environment variable GO32TMP to point
- to a temporary directory on a hard disk with plenty of free space. For
- example,
- set GO32TMP=c:/temp
- (Notice you should use forward slash "/" before a directory name, not
- backslash "\" as is more common on DOS.) You can put this command in your
- AUTOEXEC.BAT file so that you don't have to enter it by hand in future.
- If you don't set GO32TMP, the programs will try to create work files in the
- current directory. This may lead to unexpected "Insufficient memory"
- errors, especially if you happen to be cd'ed to a floppy.
-
- If you have DJGPP 1.12 or later installed, you can save some disk space by
- re-stubbing these programs with exe2coff/coff2exe. This will remove the
- built-in copies of go32 and instead use the go32 you already have. (Note:
- rdjpgcom and wrjpgcom are not compiled with DJGPP and cannot be restubbed.)
-
- The programs' "-dct float" option will not work if you don't have a math
- coprocessor. You could get DJGPP and install its math emulator, but it
- will run so slowly that you may as well not bother.
-
-
- LEGAL ISSUES
- ============
-
- In plain English:
-
- 1. We don't promise that this software works. (But if you find any bugs,
- please let us know!)
- 2. You can use this software for whatever you want. You don't have to pay us.
- 3. You may not pretend that you wrote this software. If you use it in a
- program, you must acknowledge somewhere in your documentation that
- you've used the IJG code.
-
- In legalese:
-
- The authors make NO WARRANTY or representation, either express or implied,
- with respect to this software, its quality, accuracy, merchantability, or
- fitness for a particular purpose. This software is provided "AS IS", and you,
- its user, assume the entire risk as to its quality and accuracy.
-
- This software is copyright (C) 1991, 1992, 1993, 1994, 1995, Thomas G. Lane.
- All Rights Reserved except as specified below.
-
- Permission is hereby granted to use, copy, modify, and distribute this
- software (or portions thereof) for any purpose, without fee, subject to these
- conditions:
- (1) If any part of the source code for this software is distributed, then this
- README file must be included, with this copyright and no-warranty notice
- unaltered; and any additions, deletions, or changes to the original files
- must be clearly indicated in accompanying documentation.
- (2) If only executable code is distributed, then the accompanying
- documentation must state that "this software is based in part on the work of
- the Independent JPEG Group".
- (3) Permission for use of this software is granted only if the user accepts
- full responsibility for any undesirable consequences; the authors accept
- NO LIABILITY for damages of any kind.
-
- These conditions apply to any software derived from or based on the IJG code,
- not just to the unmodified library. If you use our work, you ought to
- acknowledge us.
-
- Permission is NOT granted for the use of any IJG author's name or company name
- in advertising or publicity relating to this software or products derived from
- it. This software may be referred to only as "the Independent JPEG Group's
- software".
-
- We specifically permit and encourage the use of this software as the basis of
- commercial products, provided that all warranty or liability claims are
- assumed by the product vendor.
-
-
- We are required to state that
- "The Graphics Interchange Format(c) is the Copyright property of
- CompuServe Incorporated. GIF(sm) is a Service Mark property of
- CompuServe Incorporated."
-
-
- SOURCE CODE
- ===========
-
- The source code from which this software was generated is freely available.
- The "official" archive site for the source code is ftp.uu.net (Internet
- address 192.48.96.9). The most recent released version can always be found
- there in directory graphics/jpeg. This particular version is archived as
- graphics/jpeg/jpegsrc.v6.tar.gz. If you are on the Internet, you
- can retrieve files from ftp.uu.net by standard anonymous FTP. If you don't
- have FTP access, UUNET's archives are also available via UUCP; contact
- help@uunet.uu.net for information on retrieving files that way.
-
- You can also obtain the source in DOS-compatible "zip" archive format from
- the SimTel archives (ftp.coast.net:/SimTel/msdos/graphics/), or on CompuServe
- in the GRAPHSUPPORT forum (GO GRAPHSUP), library 12 "JPEG Tools". Note
- these versions may sometimes lag behind the ftp.uu.net release.
-
- Note that the user interface used here differs from the Unix-style user
- interface found in the main IJG distribution. Source code for the DOS user
- interface is in file jpegaltui.v6.tar.gz at ftp.uu.net.
-
- You are welcome to use the source code in other JPEG-related programs.
- The conditions for doing so may be found in LEGAL ISSUES, above.
-
- The executables in this package were compiled using DJGPP 1.12m4.
- DJGPP is a DOS version of the free GNU C compiler. You can obtain it
- via Internet from ftp.coast.net:/SimTel/vendors/djgpp/ (or other SimTel
- archive sites).
-
- The JPEG FAQ (Frequently Asked Questions) article is a useful source of
- general information about JPEG. It is updated constantly and therefore
- is not included in this distribution. The FAQ is posted every two weeks
- to Usenet newsgroups comp.graphics.misc, news.answers, and other groups.
- You can always obtain the latest version from the news.answers archive at
- rtfm.mit.edu. By FTP, fetch /pub/usenet/news.answers/jpeg-faq/part1 and
- .../part2. If you don't have FTP, send e-mail to mail-server@rtfm.mit.edu
- with body
- send usenet/news.answers/jpeg-faq/part1
- send usenet/news.answers/jpeg-faq/part2
-