Notes on the JPEG Library
=========================
This JPEG module is derived from work of the IJG (see below),
and may be copyied and redistributed according to the
conditions under LEGAL ISSUES in this file.
The code has been modified in a variety of ways;
some code (GUI_JPEG.c) has been added to as "glue" to make it
work with emWin.
The original text of this file is below; some things stated may no
longer be correct for the code that ships with emWin.
However, we decided to leave it here because it explains the basic
concepts and structure of JPEG code.
Segger Microcontroller Systeme GmbH, June 2003
====================================================================
The Independent JPEG Group's JPEG software
==========================================
README for release 6b of 27-Mar-1998
====================================
This distribution contains the sixth 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.
Serious users of this software (particularly those incorporating it into
larger programs) should contact IJG at jpeg-info@uunet.uu.net to be added to
our electronic mailing list. Mailing list members are notified of updates
and have a chance to participate in technical discussions, etc.
This software is the work of Tom Lane, Philip Gladstone, Jim Boucher,
Lee Crocker, Julian Minguillon, Luis Ortiz, George Phillips, Davide Rossi,
Guido Vollbeding, 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.
RELATED SOFTWARE Other stuff you should get.
FILE FORMAT WARS Software *not* to get.
TO DO Plans for future IJG releases.
Other documentation files in the distribution are:
User documentation:
install.doc How to configure and install the IJG software.
usage.doc Usage instructions for cjpeg, djpeg, jpegtran,
rdjpgcom, and wrjpgcom.
*.1 Unix-style man pages for programs (same info as usage.doc).
wizard.doc Advanced usage instructions for JPEG wizards only.
change.log Version-to-version change highlights.
Programmer and internal documentation:
libjpeg.doc How to use the JPEG library in your own programs.
example.c Sample code for calling the JPEG library.
structure.doc Overview of the JPEG library's internal structure.
filelist.doc Road map of IJG files.
coderules.doc Coding style rules --- please read if you contribute code.
Please read at least the files install.doc and usage.doc. Useful 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 compression and
decompression. JPEG (pronounced "jay-peg") is a standardized compression
method for full-color and gray-scale images. JPEG is intended for compressing
"real-world" scenes; line drawings, cartoons and other non-realistic images
are not its strong suit. JPEG is lossy, meaning that the output image is not
exactly identical to the input image. Hence you must not use JPEG if you
have to have identical output bits. However, on typical photographic images,
very good compression levels can be obtained with no visible change, and
remarkably high compression levels are possible if you can tolerate a
low-quality image. For more details, see the references, or just experiment
with various compression settings.
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.
For legal reasons, we are not distributing code for the arithmetic-coding
variants of JPEG; see LEGAL ISSUES. 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) 1991-1998, 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
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STM32 UcGUI和UCOSII联合代码 移植好直接用. 基于STM32F103 加触摸屏 UCGUI是一种嵌入式应用中的图形支持系统。它设计用于为任何使用LCD图形显示的应用提供高效的独立于处理器及LCD控制器的图形用户接口,它适用单任务或是多任务系统环境, 并适用于任意LCD控制器和CPU下任何尺寸的真实显示或虚拟显示。它的设计架构是模块化的,由不同的模块中的不同层组成,由一个LCD驱动层来包含所有对LCD的具体图形操作。 UCGUI可以在任何的CPU上运行,因为它是100%的标准C代码编写的。UCGUI能够适应大多数的使用黑白或彩色LCD的应用,它提供非常好的允许处理灰度的颜色管理。还提供一个可扩展的2D图形库及占用极少RAM的窗口管理体系。
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STM32 UcGUI和UCOSII联合代码 移植好直接用 (956个子文件)
BDK27_DEMO.uvgui.Administrator 71KB
os_cpu_a.asm 12KB
CCGUIWidget.bat 5KB
CCGUICore.bat 5KB
CCWM.bat 2KB
CCGUIFont.BAT 945B
CCGUIMemDev.bat 597B
CCGUIJPG.bat 562B
CCConvertColor.bat 486B
CCGUIAntiAlias.bat 242B
CCGUIMultiLayer.bat 123B
CCLCDDriver.bat 117B
CCConvertMono.bat 109B
testimg.bmp 34KB
Music.c 1.18MB
Photo_f.c 363KB
stm32f10x_tim.c 107KB
FD60x80.c 92KB
F32B_1.c 91KB
F32B_ASCII.c 89KB
F32_1.c 87KB
os_core.c 86KB
FD80.c 84KB
F32_ASCII.c 83KB
F16_HK.c 82KB
FComic24B_1.c 66KB
FComic24B_ASCII.c 63KB
stm32f10x_flash.c 61KB
F24B_1.c 60KB
F24_1.c 60KB
F24B_ASCII.c 59KB
F24_ASCII.c 59KB
FD48x64.c 58KB
os_task.c 56KB
MULTIEDIT.c 55KB
os_flag.c 55KB
F8x16.c 54KB
FD64.c 53KB
WM.c 52KB
stm32f10x_rcc.c 50KB
jquant2.c 49KB
F16_1.c 49KB
FComic18B_ASCII.c 46KB
stm32f10x_adc.c 46KB
FComic18B_1.c 46KB
stm32f10x_i2c.c 45KB
stm32f10x_can.c 44KB
os_tmr.c 44KB
os_q.c 42KB
jdmarker.c 41KB
jmemmgr.c 41KB
FD36x48.c 38KB
F16B_1.c 38KB
stm32f10x_usart.c 37KB
F16B_ASCII.c 37KB
os_mutex.c 37KB
F16_ASCII.c 36KB
F6x8.c 36KB
system_stm32f10x.c 36KB
FD48.c 35KB
MENU.c 35KB
F8x8.c 35KB
stm32f10x_fsmc.c 35KB
F13HB_1.c 34KB
F10_1.c 33KB
F13HB_ASCII.c 33KB
F8x15B_ASCII.c 32KB
F13H_1.c 32KB
F13H_ASCII.c 32KB
F13B_ASCII.c 32KB
F8x15B_1.c 32KB
LISTBOX.c 32KB
TFT_ASC_Font.c 32KB
jquant1.c 32KB
F13B_1.c 31KB
F13_1.c 31KB
F13_ASCII.c 30KB
os_mbox.c 30KB
usb_core.c 30KB
F8x13_ASCII.c 30KB
stm32f10x_spi.c 30KB
F8x13_1.c 29KB
F8x12_ASCII.c 29KB
MULTIPAGE.c 29KB
stm32f10x_dma.c 29KB
os_sem.c 29KB
usb_regs.c 29KB
stm32f10x_sdio.c 28KB
F8x10_ASCII.c 27KB
F10_ASCII.c 26KB
F10S_ASCII.c 26KB
F10S_1.c 26KB
jdcoefct.c 25KB
EDIT.c 25KB
F08_1.c 24KB
LISTVIEW.c 23KB
stm32f10x_gpio.c 23KB
jdhuff.c 21KB
HEADER.c 21KB
jdphuff.c 21KB
共 956 条
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