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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 422 | giacomo | 1 | /* $Id: isdn_lzscomp.h,v 1.1 2004-01-28 15:25:44 giacomo Exp $ |
| 2 | * |
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| 3 | * Header for isdn_lzscomp.c |
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| 4 | * Concentrated here to not mess up half a dozen kernel headers with code |
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| 5 | * snippets |
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| 6 | * |
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| 7 | * This software may be used and distributed according to the terms |
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| 8 | * of the GNU General Public License, incorporated herein by reference. |
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| 9 | * |
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| 10 | */ |
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| 11 | |||
| 12 | #define CI_LZS_COMPRESS 17 |
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| 13 | #define CILEN_LZS_COMPRESS 5 |
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| 14 | |||
| 15 | #define LZS_CMODE_NONE 0 |
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| 16 | #define LZS_CMODE_LCB 1 |
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| 17 | #define LZS_CMODE_CRC 2 |
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| 18 | #define LZS_CMODE_SEQNO 3 /* MUST be implemented (default) */ |
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| 19 | #define LZS_CMODE_EXT 4 /* Seems to be what Win0.95 uses */ |
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| 20 | |||
| 21 | #define LZS_COMP_MAX_HISTS 1 /* Don't waste peers ressources */ |
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| 22 | #define LZS_COMP_DEF_HISTS 1 /* Most likely to negotiate */ |
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| 23 | #define LZS_DECOMP_MAX_HISTS 32 /* More is really nonsense */ |
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| 24 | #define LZS_DECOMP_DEF_HISTS 8 /* If we get it, this may be optimal */ |
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| 25 | |||
| 26 | #define LZS_HIST_BYTE1(word) (word>>8) /* Just for better reading */ |
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| 27 | #define LZS_HIST_BYTE2(word) (word&0xff) /* of this big endian stuff */ |
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| 28 | #define LZS_HIST_WORD(b1,b2) ((b1<<8)|b2) /* (network byte order rulez) */ |