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; // huffman.h,v 1.11 2004/01/23 09; // 41; // 32 rob Exp $ 20 */ 21 22 # ifndef LIBMAD_HUFFMAN_H 23 # define LIBMAD_HUFFMAN_H 24 25 struct huffquad { 26 unsigned char final; 27 struct { 28 unsigned char bits; 29 unsigned short offset; 30 } ptr; 31 struct { 32 unsigned char hlen; 33 unsigned char v, w, x, y; 34 } value; 35 }; 36 37 struct huffpair { 38 unsigned char final; 39 struct { 40 unsigned char bits; 41 unsigned short offset; 42 } ptr; 43 struct { 44 unsigned char hlen; 45 unsigned char x; 46 unsigned char y; 47 } value; 48 }; 49 50 struct hufftable { 51 struct huffpair const *table; 52 unsigned short linbits; 53 unsigned short startbits; 54 }; 55 56 extern struct huffquad const *const mad_huff_quad_table[2]; 57 extern struct hufftable const mad_huff_pair_table[32]; 58 59 # endif 60