/*
 * 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

#ifdef __cplusplus
extern "C"
{
#endif

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
{
	const union huffpair* table;
	unsigned short		  linbits;
	unsigned short		  startbits;
};

extern const union huffquad* const mad_huff_quad_table[2];
extern struct hufftable const	   mad_huff_pair_table[32];

#ifdef __cplusplus
}
#endif

#endif