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1/*
2 * libmad - MPEG audio decoder library
3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 * $Id$
20 */
21
22# ifndef LIBMAD_HUFFMAN_H
23# define LIBMAD_HUFFMAN_H
24
25union huffquad {
26 struct {
27 unsigned short final : 1;
28 unsigned short bits : 3;
29 unsigned short offset : 12;
30 } ptr;
31 struct {
32 unsigned short final : 1;
33 unsigned short hlen : 3;
34 unsigned short v : 1;
35 unsigned short w : 1;
36 unsigned short x : 1;
37 unsigned short y : 1;
38 } value;
39 unsigned short final : 1;
40};
41
42union huffpair {
43 struct {
44 unsigned short final : 1;
45 unsigned short bits : 3;
46 unsigned short offset : 12;
47 } ptr;
48 struct {
49 unsigned short final : 1;
50 unsigned short hlen : 3;
51 unsigned short x : 4;
52 unsigned short y : 4;
53 } value;
54 unsigned short final : 1;
55};
56
57struct hufftable {
58 union huffpair const *table;
59 unsigned short linbits;
60 unsigned short startbits;
61};
62
63extern union huffquad const *const mad_huff_quad_table[2];
64extern struct hufftable const mad_huff_pair_table[32];
65
66# endif