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68 lines
1.9 KiB
68 lines
1.9 KiB
/* File: C:\WACKER\xfer\cmprs.hh (Created: 20-Jan-1994)
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* created from HAWIN sources
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* cmprs.hh -- Internal definitions for compression routines
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*
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* Copyright 1989,1994 by Hilgraeve Inc. -- Monroe, MI
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* All rights reserved
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*
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* $Revision: 1 $
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* $Date: 10/05/98 1:16p $
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*/
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// Set to 1 or 0 to enable/disable descriptive output
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// #define SHOW 0
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// Set to 1 or 0 to enable/disable use of assembly language module
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#define USE_ASM 0
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#define MAXNODES 4096 /* number of nodes in lookup tables */
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#define MAXCODEBITS 12 /* largest code size in bits */
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#define CLEARCODE 256 /* special code from compressor to decompressor to
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signal it to clear the table and start anew */
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#define STOPCODE 257 /* special code from compressor to decompressor to
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signal it that following data will
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not be compressed */
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#define FIRSTFREE 258 /* first code available to code pattern */
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/* These variables are shared by the compression and decompression routines */
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extern void *compress_tblspace;
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struct s_cmprs_node
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{
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struct s_cmprs_node *first;
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struct s_cmprs_node *next;
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BYTE cchar;
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};
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extern unsigned long ulHoldReg;
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extern int sBitsLeft;
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extern int sCodeBits;
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extern unsigned int usMaxCode;
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extern unsigned int usFreeCode;
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extern unsigned int usxCmprsStatus;
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extern int fxLastBuildGood;
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extern int fFlushable; // True if compression stream can
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/* function prototypes: */
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/* from cmprs1.c */
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extern void cmprs_inittbl(void);
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extern int cmprs_shutdown(void *);
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/* from cmpgetc.asm */
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extern int cmprs_getc(void *);
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/* from cmprs2.c */
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extern int dcmp_abort(void);
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extern int dcmp_start(void *pX, int c);
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extern int dcmp_putc(void *pX, int c);
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/* from dcmplook.asm */
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extern int dcmp_lookup(unsigned int code);
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extern void dcmp_inittbl(void);
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/* end of cmprs.hh */
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