The Independent JPEG Group's JPEG software
==========================================
README for release 9a of 19-Jan-2014
====================================
This distribution contains the ninth 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 ISO/IEC JTC1/SC29/WG1 standards committee
(previously known as JPEG, together with ITU-T SG16).
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 Unix-style man pages for programs (same info as usage.txt).
wizard.txt Advanced usage instructions for JPEG wizards only.
change.log Version-to-version change highlights.
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 if you contribute code.
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 "jay-peg") is a standardized compression
method for full-color and gray-scale images.
This software implements JPEG baseline, extended-sequential, and progressive
compression 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.
We provide a set of library routines for reading and writing JPEG image files,
plus two sample applications "cjpeg" and "djpeg", which use the library to
perform conversion between JPEG and some other popular image file formats.
The library is intended to be reused in other applications.
In order to support file conversion and viewing software, we have included
considerable functionality beyond the bare JPEG coding/decoding capability;
for example, the color quantization modules are not strictly part of JPEG
decoding, but they are essential for output to colormapped file formats or
colormapped displays. These extra functions can be compiled out of the
library if not required for a particular application.
We have also included "jpegtran", a utility for lossless transcoding between
different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple
applications for inserting and extracting textual comments in JFIF files.
The emphasis in designing this software has been on achieving portability and
flexibility, while also making it fast enough to be useful. In particular,
the software is not intended to be read as a tutorial on JPEG. (See the
REFERENCES section for introductory material.) Rather, it is intended to
be reliable, portable, industrial-strength code. We do not claim to have
achieved that goal in every aspect of the software, but we strive for it.
We welcome the use of this software as a component of commercial products.
No royalty is required, but we do ask for an acknowledgement in product
documentation, as described under LEGAL ISSUES.
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) 1991-2014, Thomas G. Lane, Guido Vollbeding.
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.
The Unix configuration script "configure" was produced with GNU Autoconf.
It is copyright by the Free Software Foundation but is freely distributable.
The same holds for its supporting scripts (config.guess, config.sub,
ltmain.sh). Another support script, install-sh, is copyright by X Consortium
but is also freely distributable.
The IJG distribution formerly included code to read and write GIF files.
To avoid entanglement with the Unisys LZW patent (now expired), GIF reading
support has been removed altogether, and the GIF writer has been simplified
to produce "uncompressed GIFs". This technique does not use the LZW
algorithm; the resulting GIF files are larger than usual, but are readable
by all standard GIF decoders.
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."
REFER
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基于STM32F407单片机(寄存器版)实验例程源码之-D 视频播放器实验.rar (378个子文件)
cjpeg.1 14KB
jpegtran.1 10KB
djpeg.1 8KB
wrjpgcom.1 3KB
rdjpgcom.1 2KB
configure.ac 12KB
Makefile.am 5KB
makefile.ansi 12KB
ar-lib 6KB
jmemdosa.asm 8KB
keilkill.bat 399B
makefile.bcc 15KB
jconfig.bcc 1KB
testimg.bmp 34KB
cc936.c 707KB
cc949.c 554KB
cc950.c 440KB
cc932.c 244KB
jidctint.c 183KB
jfdctint.c 159KB
ff.c 153KB
inv_mpu.c 87KB
transupp.c 64KB
ILI93xx.c 61KB
inv_mpu_dmp_motion_driver.c 57KB
jdhuff.c 49KB
jquant2.c 49KB
jchuff.c 48KB
jdmarker.c 46KB
sdio_sdcard.c 46KB
jmemmgr.c 41KB
tjpgd.c 41KB
jquant1.c 31KB
jcmaster.c 31KB
ccsbcs.c 29KB
jcarith.c 28KB
jdcoefct.c 26KB
jdinput.c 25KB
jdarith.c 24KB
jcparam.c 24KB
jdcolor.c 24KB
cjpeg.c 22KB
jdmainct.c 21KB
jcsample.c 20KB
djpeg.c 20KB
jccolor.c 20KB
jdmaster.c 20KB
jcmarker.c 19KB
jmemdos.c 19KB
jpegtran.c 19KB
example.c 17KB
wrjpgcom.c 17KB
jccoefct.c 17KB
jdmerge.c 16KB
jcdctmgr.c 16KB
gif.c 16KB
rdbmp.c 15KB
touch.c 15KB
rdtarga.c 15KB
rdjpgcom.c 15KB
usmart.c 14KB
bmp.c 14KB
rdppm.c 14KB
jctrans.c 14KB
wrbmp.c 14KB
jidctfst.c 13KB
wrgif.c 13KB
jdapimin.c 13KB
jddctmgr.c 12KB
jcprepct.c 12KB
ckconfig.c 12KB
videoplayer.c 12KB
jdsample.c 12KB
rdrle.c 12KB
usmart_str.c 12KB
rdswitch.c 11KB
app4.c 10KB
jdpostct.c 10KB
jcmainct.c 10KB
jmemmac.c 10KB
jdapistd.c 9KB
jcapimin.c 9KB
jdatasrc.c 9KB
ov2640.c 9KB
wrrle.c 9KB
wm8978.c 9KB
w25qxx.c 9KB
recorder.c 9KB
jdatadst.c 9KB
wrppm.c 8KB
jmemname.c 8KB
jidctflt.c 8KB
sys.c 8KB
jfdctfst.c 8KB
ft5206.c 8KB
jerror.c 8KB
rtc.c 8KB
i2s.c 8KB
oled.c 8KB
can.c 8KB
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