/*
 * a52.h
 * Copyright (C) 2000-2002 Michel Lespinasse <walken@zoy.org>
 * Copyright (C) 1999-2000 Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
 *
 * This file is part of a52dec, a free ATSC A-52 stream decoder.
 * See http://liba52.sourceforge.net/ for updates.
 *
 * a52dec 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.
 *
 * a52dec 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
 */

#ifndef A52_H
#define A52_H

#include <stdint.h>

typedef int32_t sample_i;
#define XISHIFT 24
#define XIUNIT (1 << XISHIFT)
sample_i imul31(sample_i, sample_i);
sample_i imulxi(sample_i, sample_i);
sample_i idivxi(sample_i, sample_i);

typedef struct a52_state_s a52_state_t;

#define A52_CHANNEL 0
#define A52_MONO 1
#define A52_STEREO 2
#define A52_3F 3
#define A52_2F1R 4
#define A52_3F1R 5
#define A52_2F2R 6
#define A52_3F2R 7
#define A52_CHANNEL1 8
#define A52_CHANNEL2 9
#define A52_DOLBY 10
#define A52_CHANNEL_MASK 15

#define A52_LFE 16
#define A52_ADJUST_LEVEL 32

a52_state_t* a52_init(void);
sample_i* a52_samples(a52_state_t* state);
int a52_syncinfo(uint8_t* buf, int* flags, int* sample_rate, int* bit_rate);
int a52_frame(a52_state_t* state, uint8_t* buf, int* flags, sample_i* level);
void a52_dynrng(a52_state_t* state,
		 sample_i (*call) (sample_i, void*), void* data);
int a52_block(a52_state_t* state);
void a52_free(a52_state_t* state);

#endif /* A52_H */
