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/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: http://www.musicpd.org
*
* 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
*/
#ifndef AUDIO_H
#define AUDIO_H
#include "../config.h"
#include "mpd_types.h"
#include "tag.h"
#include <stdio.h>
#define AUDIO_AO_DRIVER_DEFAULT "default"
#define AUDIO_MAX_DEVICES 8
typedef struct _AudioFormat {
volatile mpd_sint8 channels;
volatile mpd_uint32 sampleRate;
volatile mpd_sint8 bits;
} AudioFormat;
void copyAudioFormat(AudioFormat * dest, AudioFormat * src);
int cmpAudioFormat(AudioFormat * dest, AudioFormat * src);
void getOutputAudioFormat(AudioFormat * inFormat, AudioFormat * outFormat);
int parseAudioConfig(AudioFormat * audioFormat, char *conf);
/* make sure initPlayerData is called before this function!! */
void initAudioConfig();
void finishAudioConfig();
void initAudioDriver();
void finishAudioDriver();
int openAudioDevice(AudioFormat * audioFormat);
int playAudio(char *playChunk, int size);
void dropBufferedAudio();
void closeAudioDevice();
int isAudioDeviceOpen();
int isCurrentAudioFormat(AudioFormat * audioFormat);
void sendMetadataToAudioDevice(MpdTag * tag);
/* these functions are called in the main parent process while the child
process is busy playing to the audio */
int enableAudioDevice(int fd, int device);
int disableAudioDevice(int fd, int device);
void printAudioDevices(int fd);
void readAudioDevicesState();
void saveAudioDevicesState();
void loadAudioDrivers();
#endif
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