Chris@0: /*
Chris@0:  * libmad - MPEG audio decoder library
Chris@0:  * Copyright (C) 2000-2004 Underbit Technologies, Inc.
Chris@0:  *
Chris@0:  * This program is free software; you can redistribute it and/or modify
Chris@0:  * it under the terms of the GNU General Public License as published by
Chris@0:  * the Free Software Foundation; either version 2 of the License, or
Chris@0:  * (at your option) any later version.
Chris@0:  *
Chris@0:  * This program is distributed in the hope that it will be useful,
Chris@0:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@0:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@0:  * GNU General Public License for more details.
Chris@0:  *
Chris@0:  * You should have received a copy of the GNU General Public License
Chris@0:  * along with this program; if not, write to the Free Software
Chris@0:  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
Chris@0:  *
Chris@0:  * $Id: huffman.h,v 1.11 2004/01/23 09:41:32 rob Exp $
Chris@0:  */
Chris@0: 
Chris@0: # ifndef LIBMAD_HUFFMAN_H
Chris@0: # define LIBMAD_HUFFMAN_H
Chris@0: 
Chris@0: union huffquad {
Chris@0:   struct {
Chris@0:     unsigned short final  :  1;
Chris@0:     unsigned short bits   :  3;
Chris@0:     unsigned short offset : 12;
Chris@0:   } ptr;
Chris@0:   struct {
Chris@0:     unsigned short final  :  1;
Chris@0:     unsigned short hlen   :  3;
Chris@0:     unsigned short v      :  1;
Chris@0:     unsigned short w      :  1;
Chris@0:     unsigned short x      :  1;
Chris@0:     unsigned short y      :  1;
Chris@0:   } value;
Chris@0:   unsigned short final    :  1;
Chris@0: };
Chris@0: 
Chris@0: union huffpair {
Chris@0:   struct {
Chris@0:     unsigned short final  :  1;
Chris@0:     unsigned short bits   :  3;
Chris@0:     unsigned short offset : 12;
Chris@0:   } ptr;
Chris@0:   struct {
Chris@0:     unsigned short final  :  1;
Chris@0:     unsigned short hlen   :  3;
Chris@0:     unsigned short x      :  4;
Chris@0:     unsigned short y      :  4;
Chris@0:   } value;
Chris@0:   unsigned short final    :  1;
Chris@0: };
Chris@0: 
Chris@0: struct hufftable {
Chris@0:   union huffpair const *table;
Chris@0:   unsigned short linbits;
Chris@0:   unsigned short startbits;
Chris@0: };
Chris@0: 
Chris@0: extern union huffquad const *const mad_huff_quad_table[2];
Chris@0: extern struct hufftable const mad_huff_pair_table[32];
Chris@0: 
Chris@0: # endif