1 /* $Id: isdn_lzscomp.h,v 1.1.10.1 2001/09/23 22:25:05 kai Exp $
3 * Header for isdn_lzscomp.c
4 * Concentrated here to not mess up half a dozen kernel headers with code
7 * This software may be used and distributed according to the terms
8 * of the GNU General Public License, incorporated herein by reference.
12 #define CI_LZS_COMPRESS 17
13 #define CILEN_LZS_COMPRESS 5
15 #define LZS_CMODE_NONE 0
16 #define LZS_CMODE_LCB 1
17 #define LZS_CMODE_CRC 2
18 #define LZS_CMODE_SEQNO 3 /* MUST be implemented (default) */
19 #define LZS_CMODE_EXT 4 /* Seems to be what Win0.95 uses */
21 #define LZS_COMP_MAX_HISTS 1 /* Don't waste peers ressources */
22 #define LZS_COMP_DEF_HISTS 1 /* Most likely to negotiate */
23 #define LZS_DECOMP_MAX_HISTS 32 /* More is really nonsense */
24 #define LZS_DECOMP_DEF_HISTS 8 /* If we get it, this may be optimal */
26 #define LZS_HIST_BYTE1(word) (word>>8) /* Just for better reading */
27 #define LZS_HIST_BYTE2(word) (word&0xff) /* of this big endian stuff */
28 #define LZS_HIST_WORD(b1,b2) ((b1<<8)|b2) /* (network byte order rulez) */