You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
215 lines
8.4 KiB
215 lines
8.4 KiB
IJG JPEG LIBRARY: FILE LIST |
|
|
|
Copyright (C) 1994-2009, Thomas G. Lane, Guido Vollbeding. |
|
This file is part of the Independent JPEG Group's software. |
|
For conditions of distribution and use, see the accompanying README file. |
|
|
|
|
|
Here is a road map to the files in the IJG JPEG distribution. The |
|
distribution includes the JPEG library proper, plus two application |
|
programs ("cjpeg" and "djpeg") which use the library to convert JPEG |
|
files to and from some other popular image formats. A third application |
|
"jpegtran" uses the library to do lossless conversion between different |
|
variants of JPEG. There are also two stand-alone applications, |
|
"rdjpgcom" and "wrjpgcom". |
|
|
|
|
|
THE JPEG LIBRARY |
|
================ |
|
|
|
Include files: |
|
|
|
jpeglib.h JPEG library's exported data and function declarations. |
|
jconfig.h Configuration declarations. Note: this file is not present |
|
in the distribution; it is generated during installation. |
|
jmorecfg.h Additional configuration declarations; need not be changed |
|
for a standard installation. |
|
jerror.h Declares JPEG library's error and trace message codes. |
|
jinclude.h Central include file used by all IJG .c files to reference |
|
system include files. |
|
jpegint.h JPEG library's internal data structures. |
|
jdct.h Private declarations for forward & reverse DCT subsystems. |
|
jmemsys.h Private declarations for memory management subsystem. |
|
jversion.h Version information. |
|
|
|
Applications using the library should include jpeglib.h (which in turn |
|
includes jconfig.h and jmorecfg.h). Optionally, jerror.h may be included |
|
if the application needs to reference individual JPEG error codes. The |
|
other include files are intended for internal use and would not normally |
|
be included by an application program. (cjpeg/djpeg/etc do use jinclude.h, |
|
since its function is to improve portability of the whole IJG distribution. |
|
Most other applications will directly include the system include files they |
|
want, and hence won't need jinclude.h.) |
|
|
|
|
|
C source code files: |
|
|
|
These files contain most of the functions intended to be called directly by |
|
an application program: |
|
|
|
jcapimin.c Application program interface: core routines for compression. |
|
jcapistd.c Application program interface: standard compression. |
|
jdapimin.c Application program interface: core routines for decompression. |
|
jdapistd.c Application program interface: standard decompression. |
|
jcomapi.c Application program interface routines common to compression |
|
and decompression. |
|
jcparam.c Compression parameter setting helper routines. |
|
jctrans.c API and library routines for transcoding compression. |
|
jdtrans.c API and library routines for transcoding decompression. |
|
|
|
Compression side of the library: |
|
|
|
jcinit.c Initialization: determines which other modules to use. |
|
jcmaster.c Master control: setup and inter-pass sequencing logic. |
|
jcmainct.c Main buffer controller (preprocessor => JPEG compressor). |
|
jcprepct.c Preprocessor buffer controller. |
|
jccoefct.c Buffer controller for DCT coefficient buffer. |
|
jccolor.c Color space conversion. |
|
jcsample.c Downsampling. |
|
jcdctmgr.c DCT manager (DCT implementation selection & control). |
|
jfdctint.c Forward DCT using slow-but-accurate integer method. |
|
jfdctfst.c Forward DCT using faster, less accurate integer method. |
|
jfdctflt.c Forward DCT using floating-point arithmetic. |
|
jchuff.c Huffman entropy coding. |
|
jcarith.c Arithmetic entropy coding. |
|
jcmarker.c JPEG marker writing. |
|
jdatadst.c Data destination managers for memory and stdio output. |
|
|
|
Decompression side of the library: |
|
|
|
jdmaster.c Master control: determines which other modules to use. |
|
jdinput.c Input controller: controls input processing modules. |
|
jdmainct.c Main buffer controller (JPEG decompressor => postprocessor). |
|
jdcoefct.c Buffer controller for DCT coefficient buffer. |
|
jdpostct.c Postprocessor buffer controller. |
|
jdmarker.c JPEG marker reading. |
|
jdhuff.c Huffman entropy decoding. |
|
jdarith.c Arithmetic entropy decoding. |
|
jddctmgr.c IDCT manager (IDCT implementation selection & control). |
|
jidctint.c Inverse DCT using slow-but-accurate integer method. |
|
jidctfst.c Inverse DCT using faster, less accurate integer method. |
|
jidctflt.c Inverse DCT using floating-point arithmetic. |
|
jdsample.c Upsampling. |
|
jdcolor.c Color space conversion. |
|
jdmerge.c Merged upsampling/color conversion (faster, lower quality). |
|
jquant1.c One-pass color quantization using a fixed-spacing colormap. |
|
jquant2.c Two-pass color quantization using a custom-generated colormap. |
|
Also handles one-pass quantization to an externally given map. |
|
jdatasrc.c Data source managers for memory and stdio input. |
|
|
|
Support files for both compression and decompression: |
|
|
|
jaricom.c Tables for common use in arithmetic entropy encoding and |
|
decoding routines. |
|
jerror.c Standard error handling routines (application replaceable). |
|
jmemmgr.c System-independent (more or less) memory management code. |
|
jutils.c Miscellaneous utility routines. |
|
|
|
jmemmgr.c relies on a system-dependent memory management module. The IJG |
|
distribution includes the following implementations of the system-dependent |
|
module: |
|
|
|
jmemnobs.c "No backing store": assumes adequate virtual memory exists. |
|
jmemansi.c Makes temporary files with ANSI-standard routine tmpfile(). |
|
jmemname.c Makes temporary files with program-generated file names. |
|
jmemdos.c Custom implementation for MS-DOS (16-bit environment only): |
|
can use extended and expanded memory as well as temp files. |
|
jmemmac.c Custom implementation for Apple Macintosh. |
|
|
|
Exactly one of the system-dependent modules should be configured into an |
|
installed JPEG library (see install.txt for hints about which one to use). |
|
On unusual systems you may find it worthwhile to make a special |
|
system-dependent memory manager. |
|
|
|
|
|
Non-C source code files: |
|
|
|
jmemdosa.asm 80x86 assembly code support for jmemdos.c; used only in |
|
MS-DOS-specific configurations of the JPEG library. |
|
|
|
|
|
CJPEG/DJPEG/JPEGTRAN |
|
==================== |
|
|
|
Include files: |
|
|
|
cdjpeg.h Declarations shared by cjpeg/djpeg/jpegtran modules. |
|
cderror.h Additional error and trace message codes for cjpeg et al. |
|
transupp.h Declarations for jpegtran support routines in transupp.c. |
|
|
|
C source code files: |
|
|
|
cjpeg.c Main program for cjpeg. |
|
djpeg.c Main program for djpeg. |
|
jpegtran.c Main program for jpegtran. |
|
cdjpeg.c Utility routines used by all three programs. |
|
rdcolmap.c Code to read a colormap file for djpeg's "-map" switch. |
|
rdswitch.c Code to process some of cjpeg's more complex switches. |
|
Also used by jpegtran. |
|
transupp.c Support code for jpegtran: lossless image manipulations. |
|
|
|
Image file reader modules for cjpeg: |
|
|
|
rdbmp.c BMP file input. |
|
rdgif.c GIF file input (now just a stub). |
|
rdppm.c PPM/PGM file input. |
|
rdrle.c Utah RLE file input. |
|
rdtarga.c Targa file input. |
|
|
|
Image file writer modules for djpeg: |
|
|
|
wrbmp.c BMP file output. |
|
wrgif.c GIF file output (a mere shadow of its former self). |
|
wrppm.c PPM/PGM file output. |
|
wrrle.c Utah RLE file output. |
|
wrtarga.c Targa file output. |
|
|
|
|
|
RDJPGCOM/WRJPGCOM |
|
================= |
|
|
|
C source code files: |
|
|
|
rdjpgcom.c Stand-alone rdjpgcom application. |
|
wrjpgcom.c Stand-alone wrjpgcom application. |
|
|
|
These programs do not depend on the IJG library. They do use |
|
jconfig.h and jinclude.h, only to improve portability. |
|
|
|
|
|
ADDITIONAL FILES |
|
================ |
|
|
|
Documentation (see README for a guide to the documentation files): |
|
|
|
README Master documentation file. |
|
*.txt Other documentation files. |
|
*.1 Documentation in Unix man page format. |
|
change.log Version-to-version change highlights. |
|
example.c Sample code for calling JPEG library. |
|
|
|
Configuration/installation files and programs (see install.txt for more info): |
|
|
|
configure Unix shell script to perform automatic configuration. |
|
configure.ac Source file for use with Autoconf to generate configure. |
|
ltmain.sh Support scripts for configure (from GNU libtool). |
|
config.guess |
|
config.sub |
|
depcomp |
|
missing |
|
install-sh Install shell script for those Unix systems lacking one. |
|
Makefile.in Makefile input for configure. |
|
Makefile.am Source file for use with Automake to generate Makefile.in. |
|
ckconfig.c Program to generate jconfig.h on non-Unix systems. |
|
jconfig.txt Template for making jconfig.h by hand. |
|
mak*.* Sample makefiles for particular systems. |
|
jconfig.* Sample jconfig.h for particular systems. |
|
libjpeg.map Script to generate shared library with versioned symbols. |
|
aclocal.m4 M4 macro definitions for use with Autoconf. |
|
ansi2knr.c De-ANSIfier for pre-ANSI C compilers (courtesy of |
|
L. Peter Deutsch and Aladdin Enterprises). |
|
|
|
Test files (see install.txt for test procedure): |
|
|
|
test*.* Source and comparison files for confidence test. |
|
These are binary image files, NOT text files.
|
|
|