/* 
 *    ac3.h
 *
 *	Copyright (C) Aaron Holtzman - May 1999
 *
 *  This file is part of ac3dec, a free Dolby AC-3 stream decoder.
 *	
 *  ac3dec 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, or (at your option)
 *  any later version.
 *   
 *  ac3dec 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 GNU Make; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 
 *
 *
 */

#include <inttypes.h>

#define AC3_DOLBY_SURR_ENABLE 0x1

typedef struct ac3_config_s
{
    //Bit flags that enable various things
    uint32_t flags;
    //Callback that points the decoder to new stream data
    void (* fill_buffer_callback) (uint8_t **, uint8_t **);
    //Number of discrete channels in final output (for downmixing)
    uint16_t num_output_ch;
    //Which channel of a dual mono stream to select
    uint16_t dual_mono_ch_sel;
} ac3_config_t;

typedef struct ac3_frame_s
{
    uint32_t  sampling_rate;
    int16_t * audio_data;
    int       num_channels;
} ac3_frame_t;

void ac3_init(void);
int ac3_frame_length(uint8_t * buf);
int ac3_sampling_rate(uint8_t * buf);
ac3_frame_t* ac3_decode_frame(uint8_t * buf, int max_num_channels);