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/*
* Copyright (C) 2000-2001 the xine project
*
* This file is part of xine, a unix video player.
*
* xine 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.
*
* xine 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: audio_out.h,v 1.1 2001/04/18 22:36:42 f1rmb Exp $
*/
#ifndef HAVE_AUDIO_OUT_H
#define HAVE_AUDIO_OUT_H
#include <inttypes.h>
/*
* audio output modes Used as Bitfield in AC3 decoder
*/
#define AO_MODE_AC3 1
#define AO_MODE_MONO 2 /* 1 sample == 2 bytes */
#define AO_MODE_STEREO 4 /* 1 sample == 4 bytes */
#define AO_MODE_4CHANNEL 8 /* 1 sample == 8 bytes */
#define AO_MODE_5CHANNEL 16 /* 1 sample == 10 bytes */
typedef struct ao_functions_s
{
/*
* find out if desired output mode is supported by
* this driver
*/
int (*is_mode_supported) (int mode);
/*
* init device - buffer will be flushed(!)
* return value: <=0 : failure, 1 : ok
*/
int (*open)(uint32_t bits, uint32_t rate, int mode);
/*
* write audio data to output buffer - may block
* audio driver must sync sample playback with metronom
*/
void (*write_audio_data)(int16_t* audio_data, uint32_t num_samples,
uint32_t pts);
/*
* close the audio driver
*/
void (*close)(void);
} ao_functions_t;
/*
* available drivers:
*/
#define AO_DRIVER_UNSET -1
#define AO_DRIVER_NULL 0
#define AO_DRIVER_OSS 1
#if defined(HAVE_ALSA)
# define AO_DRIVER_ALSA 2
# if defined(HAVE_ESD)
# define AO_DRIVER_ESD 3
# endif
#else /* no ALSA */
# if defined(HAVE_ESD)
# define AO_DRIVER_ESD 2
# endif
#endif
/*
* find right device driver, init it
*/
ao_functions_t *ao_init(char *driver_name) ;
char *ao_get_available_drivers ();
#endif
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