d6e28f20c30ac5e8ebd611da60a77873c8ac38a6
[reactos.git] / reactos / tools / hhpcomp / lzx_compress / lz_nonslide.h
1 /*
2 File lz_nonslide.h, part of lzxcomp library
3 Copyright (C) 2002 Matthew T. Russotto
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU Lesser General Public License as published by
7 the Free Software Foundation; version 2.1 only
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 */
18
19 #if defined(_WIN32)
20 typedef unsigned char u_char;
21 #endif
22
23 typedef struct lz_info lz_info;
24 typedef int (*get_chars_t)(lz_info *lzi, int n, u_char *buf);
25 typedef int (*output_match_t)(lz_info *lzi, int match_pos, int match_len);
26 typedef void (*output_literal_t)(lz_info *lzi, u_char ch);
27
28 struct lz_info
29 {
30 int wsize; /* window size in bytes */
31 int max_match; /* size of longest match in bytes */
32 int min_match;
33 u_char *block_buf;
34 u_char *block_bufe;
35 int block_buf_size;
36 int chars_in_buf;
37 int cur_loc; /* location within stream */
38 int block_loc;
39 int frame_size;
40 int max_dist;
41 u_char **prevtab;
42 int *lentab;
43 short eofcount;
44 short stop;
45 short analysis_valid;
46
47 get_chars_t get_chars;
48 output_match_t output_match;
49 output_literal_t output_literal;
50 void *user_data;
51 };
52
53 void lz_init(lz_info *lzi, int wsize, int max_dist,
54 int max_match, int min_match,
55 int frame_size,
56 get_chars_t get_chars,
57 output_match_t output_match,
58 output_literal_t output_literal, void *user_data);
59
60 void lz_release(lz_info *lzi);
61
62 void lz_reset(lz_info *lzi);
63 void lz_stop_compressing(lz_info *lzi);
64 int lz_left_to_process(lz_info *lzi); /* returns # chars read in but unprocessed */
65 int lz_compress(lz_info *lzi, int nchars);