Copyrights and Legal Notices
README for release 8b of
This distribution contains the eighth public release 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 software is the work of Tom Lane, Guido Vollbeding, Philip Gladstone, Bill Allombert, Jim Boucher, Lee Crocker, Bob Friesenhahn, Ben Jackson, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi, Ge' Weijers, and other members of the Independent JPEG Group. IJG is not affiliated with the official ISO JPEG standards committee.
DOCUMENTATION ROADMAP
This file contains the following sections:
OVERVIEW |
| General description of JPEG and the IJG software. | ||
LEGAL ISSUES |
| Copyright, lack of warranty, terms of distribution. | ||
REFERENCES |
| Where to learn more about JPEG. | ||
ARCHIVE LOCATIONS | Where to find newer versions of this software. | |||
ACKNOWLEDGMENTS | Special thanks. | |||
FILE FORMAT WARS | Software *not* to get. | |||
TO DO |
| Plans for future IJG releases. | ||
Other documentation files in the distribution are: | ||||
User documentation: |
| |||
• | install.txt |
| How to configure and install the IJG software. | |
• | usage.txt | Usage instructions for cjpeg, djpeg, jpegtran, | ||
•rdjpgcom, and wrjpgcom.
• | *.1 | |
• | wizard.txt | Advanced usage instructions for JPEG wizards only. |
• | change.log | |
Programmer and internal documentation: | ||
• | libjpeg.txt | How to use the JPEG library in your own programs. |
• | example.c | Sample code for calling the JPEG library. |
• | structure.txt | Overview of the JPEG library's internal structure. |
• | filelist.txt | Road map of IJG files. |
• | coderules.txt Coding style rules | |
Please read at least the files install.txt and usage.txt. Some information can also be found in the JPEG FAQ (Frequently Asked Questions) article. See ARCHIVE LOCATIONS below to find out where to obtain the FAQ article.
If you want to understand how the JPEG code works, we suggest reading one or more of the REFERENCES, then looking at the documentation files (in roughly the order listed) before diving into the code.
OVERVIEW
This package contains C software to implement JPEG image encoding, decoding, and transcoding. JPEG (pronounced
This software implements JPEG baseline,
processes. Provision is made for supporting all variants of these processes, although some uncommon parameter settings aren't implemented yet. We have made no provision for supporting the hierarchical or lossless processes defined in the standard.
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