67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
|
/*
|
||
|
|
* libmad - MPEG audio decoder library
|
||
|
|
* Copyright (C) 2000-2004 Underbit Technologies, Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*
|
||
|
|
* $Id: huffman.h,v 1.11 2004/01/23 09:41:32 rob Exp $
|
||
|
|
*/
|
||
|
|
|
||
|
|
# ifndef LIBMAD_HUFFMAN_H
|
||
|
|
# define LIBMAD_HUFFMAN_H
|
||
|
|
|
||
|
|
union huffquad {
|
||
|
|
struct {
|
||
|
|
unsigned short final : 1;
|
||
|
|
unsigned short bits : 3;
|
||
|
|
unsigned short offset : 12;
|
||
|
|
} ptr;
|
||
|
|
struct {
|
||
|
|
unsigned short final : 1;
|
||
|
|
unsigned short hlen : 3;
|
||
|
|
unsigned short v : 1;
|
||
|
|
unsigned short w : 1;
|
||
|
|
unsigned short x : 1;
|
||
|
|
unsigned short y : 1;
|
||
|
|
} value;
|
||
|
|
unsigned short final : 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
union huffpair {
|
||
|
|
struct {
|
||
|
|
unsigned short final : 1;
|
||
|
|
unsigned short bits : 3;
|
||
|
|
unsigned short offset : 12;
|
||
|
|
} ptr;
|
||
|
|
struct {
|
||
|
|
unsigned short final : 1;
|
||
|
|
unsigned short hlen : 3;
|
||
|
|
unsigned short x : 4;
|
||
|
|
unsigned short y : 4;
|
||
|
|
} value;
|
||
|
|
unsigned short final : 1;
|
||
|
|
};
|
||
|
|
|
||
|
|
struct hufftable {
|
||
|
|
union huffpair const *table;
|
||
|
|
unsigned short linbits;
|
||
|
|
unsigned short startbits;
|
||
|
|
};
|
||
|
|
|
||
|
|
extern union huffquad const *const mad_huff_quad_table[2];
|
||
|
|
extern struct hufftable const mad_huff_pair_table[32];
|
||
|
|
|
||
|
|
# endif
|