|
Chris@0
|
1 /*
|
|
Chris@0
|
2 * libmad - MPEG audio decoder library
|
|
Chris@0
|
3 * Copyright (C) 2000-2004 Underbit Technologies, Inc.
|
|
Chris@0
|
4 *
|
|
Chris@0
|
5 * This program is free software; you can redistribute it and/or modify
|
|
Chris@0
|
6 * it under the terms of the GNU General Public License as published by
|
|
Chris@0
|
7 * the Free Software Foundation; either version 2 of the License, or
|
|
Chris@0
|
8 * (at your option) any later version.
|
|
Chris@0
|
9 *
|
|
Chris@0
|
10 * This program is distributed in the hope that it will be useful,
|
|
Chris@0
|
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Chris@0
|
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Chris@0
|
13 * GNU General Public License for more details.
|
|
Chris@0
|
14 *
|
|
Chris@0
|
15 * You should have received a copy of the GNU General Public License
|
|
Chris@0
|
16 * along with this program; if not, write to the Free Software
|
|
Chris@0
|
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
Chris@0
|
18 *
|
|
Chris@0
|
19 * $Id: huffman.h,v 1.11 2004/01/23 09:41:32 rob Exp $
|
|
Chris@0
|
20 */
|
|
Chris@0
|
21
|
|
Chris@0
|
22 # ifndef LIBMAD_HUFFMAN_H
|
|
Chris@0
|
23 # define LIBMAD_HUFFMAN_H
|
|
Chris@0
|
24
|
|
Chris@0
|
25 union huffquad {
|
|
Chris@0
|
26 struct {
|
|
Chris@0
|
27 unsigned short final : 1;
|
|
Chris@0
|
28 unsigned short bits : 3;
|
|
Chris@0
|
29 unsigned short offset : 12;
|
|
Chris@0
|
30 } ptr;
|
|
Chris@0
|
31 struct {
|
|
Chris@0
|
32 unsigned short final : 1;
|
|
Chris@0
|
33 unsigned short hlen : 3;
|
|
Chris@0
|
34 unsigned short v : 1;
|
|
Chris@0
|
35 unsigned short w : 1;
|
|
Chris@0
|
36 unsigned short x : 1;
|
|
Chris@0
|
37 unsigned short y : 1;
|
|
Chris@0
|
38 } value;
|
|
Chris@0
|
39 unsigned short final : 1;
|
|
Chris@0
|
40 };
|
|
Chris@0
|
41
|
|
Chris@0
|
42 union huffpair {
|
|
Chris@0
|
43 struct {
|
|
Chris@0
|
44 unsigned short final : 1;
|
|
Chris@0
|
45 unsigned short bits : 3;
|
|
Chris@0
|
46 unsigned short offset : 12;
|
|
Chris@0
|
47 } ptr;
|
|
Chris@0
|
48 struct {
|
|
Chris@0
|
49 unsigned short final : 1;
|
|
Chris@0
|
50 unsigned short hlen : 3;
|
|
Chris@0
|
51 unsigned short x : 4;
|
|
Chris@0
|
52 unsigned short y : 4;
|
|
Chris@0
|
53 } value;
|
|
Chris@0
|
54 unsigned short final : 1;
|
|
Chris@0
|
55 };
|
|
Chris@0
|
56
|
|
Chris@0
|
57 struct hufftable {
|
|
Chris@0
|
58 union huffpair const *table;
|
|
Chris@0
|
59 unsigned short linbits;
|
|
Chris@0
|
60 unsigned short startbits;
|
|
Chris@0
|
61 };
|
|
Chris@0
|
62
|
|
Chris@0
|
63 extern union huffquad const *const mad_huff_quad_table[2];
|
|
Chris@0
|
64 extern struct hufftable const mad_huff_pair_table[32];
|
|
Chris@0
|
65
|
|
Chris@0
|
66 # endif
|
