lzvars.c

LZSS 压缩/解压算法 算法简单

/***************************************************************************
*            Lempel, Ziv, Storer, and Szymanski Global Variables
*
*   File    : lzvars.c
*   Purpose : Declare global variables used lzss coding
*             compress/decompress files.
*   Author  : Michael Dipperstein
*   Date    : November 07, 2003
*
****************************************************************************
*   UPDATES
*
*   $Id: lzvars.c,v 1.1 2004/11/08 05:54:18 michael Exp $
*   $Log: lzvars.c,v $
*   Revision 1.1  2004/11/08 05:54:18  michael
*   1. Split encode and decode routines for smarter linking
*   2. Renamed lzsample.c sample.c to match my other samples
*   3. Makefile now builds code as libraries for better LGPL compliance.
*
*
****************************************************************************
*
* LZvars: Global variables used in ANSI C LZSS Encoding/Decoding Routines
* Copyright (C) 2002-2004 by Michael Dipperstein ([e-mail])
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
***************************************************************************/

/***************************************************************************
*                             INCLUDED FILES
***************************************************************************/
#include "lzlocal.h"

/***************************************************************************
*                            TYPE DEFINITIONS
***************************************************************************/

/***************************************************************************
*                                CONSTANTS
***************************************************************************/

/***************************************************************************
*                            GLOBAL VARIABLES
***************************************************************************/
/* cyclic buffer sliding window of already read characters */
unsigned char slidingWindow[WINDOW_SIZE];
unsigned char uncodedLookahead[MAX_CODED];

/***************************************************************************
*                               PROTOTYPES
***************************************************************************/

/***************************************************************************
*                                FUNCTIONS
***************************************************************************/