cannam@85: /*
cannam@85:  * libmad - MPEG audio decoder library
cannam@85:  * Copyright (C) 2000-2004 Underbit Technologies, Inc.
cannam@85:  *
cannam@85:  * This program is free software; you can redistribute it and/or modify
cannam@85:  * it under the terms of the GNU General Public License as published by
cannam@85:  * the Free Software Foundation; either version 2 of the License, or
cannam@85:  * (at your option) any later version.
cannam@85:  *
cannam@85:  * This program is distributed in the hope that it will be useful,
cannam@85:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@85:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@85:  * GNU General Public License for more details.
cannam@85:  *
cannam@85:  * You should have received a copy of the GNU General Public License
cannam@85:  * along with this program; if not, write to the Free Software
cannam@85:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
cannam@85:  *
cannam@85:  * $Id: huffman.h,v 1.11 2004/01/23 09:41:32 rob Exp $
cannam@85:  */
cannam@85: 
cannam@85: # ifndef LIBMAD_HUFFMAN_H
cannam@85: # define LIBMAD_HUFFMAN_H
cannam@85: 
cannam@85: union huffquad {
cannam@85:   struct {
cannam@85:     unsigned short final  :  1;
cannam@85:     unsigned short bits   :  3;
cannam@85:     unsigned short offset : 12;
cannam@85:   } ptr;
cannam@85:   struct {
cannam@85:     unsigned short final  :  1;
cannam@85:     unsigned short hlen   :  3;
cannam@85:     unsigned short v      :  1;
cannam@85:     unsigned short w      :  1;
cannam@85:     unsigned short x      :  1;
cannam@85:     unsigned short y      :  1;
cannam@85:   } value;
cannam@85:   unsigned short final    :  1;
cannam@85: };
cannam@85: 
cannam@85: union huffpair {
cannam@85:   struct {
cannam@85:     unsigned short final  :  1;
cannam@85:     unsigned short bits   :  3;
cannam@85:     unsigned short offset : 12;
cannam@85:   } ptr;
cannam@85:   struct {
cannam@85:     unsigned short final  :  1;
cannam@85:     unsigned short hlen   :  3;
cannam@85:     unsigned short x      :  4;
cannam@85:     unsigned short y      :  4;
cannam@85:   } value;
cannam@85:   unsigned short final    :  1;
cannam@85: };
cannam@85: 
cannam@85: struct hufftable {
cannam@85:   union huffpair const *table;
cannam@85:   unsigned short linbits;
cannam@85:   unsigned short startbits;
cannam@85: };
cannam@85: 
cannam@85: extern union huffquad const *const mad_huff_quad_table[2];
cannam@85: extern struct hufftable const mad_huff_pair_table[32];
cannam@85: 
cannam@85: # endif