1 /*-------------------------------------------------------------------------
2 * Filename: mini_inflate.h
3 * Version: $Id: mini_inflate.h,v 1.2 2002/01/17 00:53:20 nyet Exp $
4 * Copyright: Copyright (C) 2001, Russ Dill
5 * Author: Russ Dill <Russ.Dill@asu.edu>
6 * Description: Mini deflate implementation
7 *-----------------------------------------------------------------------*/
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 typedef __SIZE_TYPE__ size;
29 #define COMP_UNKNOWN 1 /* The specififed bytype is invalid */
30 #define CODE_NOT_FOUND 2 /* a huffman code in the stream could not be decoded */
31 #define TOO_MANY_BITS 3 /* pull_bits was passed an argument that is too
34 /* This struct represents an entire huffman code set. It has various lookup
35 * tables to speed decoding */
37 int bits; /* maximum bit length */
38 int num_symbols; /* Number of symbols this code can represent */
39 int *lengths; /* The bit length of symbols */
40 int *symbols; /* All of the symbols, sorted by the huffman code */
41 int *count; /* the number of codes of this bit length */
42 int *first; /* the first code of this bit length */
43 int *pos; /* the symbol that first represents (in the symbols
48 unsigned char *data; /* increments as we move from byte to byte */
49 unsigned char bit; /* 0 to 7 */
50 void *(*memcpy)(void *, const void *, size);
51 unsigned long decoded; /* The number of bytes decoded */
54 int distance_count[16];
55 int distance_first[16];
57 int distance_lengths[32];
58 int distance_symbols[32];
69 int length_lengths[288];
70 int length_symbols[288];
72 struct huffman_set codes;
73 struct huffman_set lengths;
74 struct huffman_set distance;
79 #define DYNAMIC_COMP 2
81 long decompress_block(unsigned char *dest, unsigned char *source,
82 void *(*inflate_memcpy)(void *dest, const void *src, size n));