| IJG JPEG LIBRARY:  FILE LIST | 
 |  | 
 | Copyright (C) 1994-2010, Thomas G. Lane, Guido Vollbeding, D. R. Commander. | 
 | 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. | 
 | jchuff.h	Private declarations for Huffman encoder modules. | 
 | jdhuff.h	Private declarations for Huffman decoder modules. | 
 | 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 for sequential JPEG. | 
 | jcphuff.c	Huffman entropy coding for progressive JPEG. | 
 | 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 for sequential JPEG. | 
 | jdphuff.c	Huffman entropy decoding for progressive JPEG. | 
 | 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. | 
 | jidctred.c	Inverse DCTs with reduced-size outputs. | 
 | 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. | 
 | jconfig.txt	Template for making jconfig.h by hand. | 
 | aclocal.m4	M4 macro definitions for use with Autoconf. | 
 |  | 
 | Test files (see install.txt for test procedure): | 
 |  | 
 | test*.*		Source and comparison files for confidence test. | 
 | 		These are binary image files, NOT text files. |