aboutsummaryrefslogtreecommitdiffstats
path: root/src/audio.h
blob: 548beb806c08a771a4367770b1dea5147a96b5f8 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
/* the Music Player Daemon (MPD)
 * Copyright (C) 2003-2007 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 "os_compat.h"

#define AUDIO_AO_DRIVER_DEFAULT	"default"

typedef struct _AudioFormat {
	volatile mpd_sint8 channels;
	volatile mpd_uint32 sampleRate;
	volatile mpd_sint8 bits;
} AudioFormat;

unsigned int audio_device_count(void);

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);

void finishAudioConfig(void);

void initAudioDriver(void);

void finishAudioDriver(void);

int openAudioDevice(AudioFormat * audioFormat);

int playAudio(const char *playChunk, int size);

void dropBufferedAudio(void);

void closeAudioDevice(void);

int isAudioDeviceOpen(void);

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, unsigned int device);

int disableAudioDevice(int fd, unsigned int device);

void printAudioDevices(int fd);

void readAudioDevicesState(FILE *fp);

void saveAudioDevicesState(FILE *fp);

void loadAudioDrivers(void);
#endif