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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* 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 MPD_OUTPUT_INTERNAL_H
#define MPD_OUTPUT_INTERNAL_H
#include "pcm_utils.h"
#include "notify.h"
#include <pthread.h>
#include <time.h>
struct audio_output {
/**
* The device's configured display name.
*/
const char *name;
/**
* The plugin which implements this output device.
*/
const struct audio_output_plugin *plugin;
/**
* The plugin's internal data. It is passed to every plugin
* method.
*/
void *data;
/**
* Has the user enabled this device?
*/
bool enabled;
/**
* Is the device (already) open and functional?
*/
bool open;
/**
* If not zero, the device has failed, and should not be
* reopened automatically before this time stamp.
*/
time_t reopen_after;
/**
* The audio_format in which audio data is received from the
* player thread (which in turn receives it from the decoder).
*/
struct audio_format inAudioFormat;
/**
* The audio_format which is really sent to the device. This
* is basically reqAudioFormat (if configured) or
* inAudioFormat, but may have been modified by
* plugin->open().
*/
struct audio_format outAudioFormat;
/**
* The audio_format which was configured. Only set if
* convertAudioFormat is true.
*/
struct audio_format reqAudioFormat;
struct pcm_convert_state convState;
char *convBuffer;
size_t convBufferLen;
/**
* The thread handle, or "0" if the output thread isn't
* running.
*/
pthread_t thread;
/**
* Notify object for the thread.
*/
struct notify notify;
/**
* The next command to be performed by the output thread.
*/
enum audio_output_command command;
/**
* Command arguments, depending on the command.
*/
union {
struct {
const char *data;
size_t size;
} play;
const struct tag *tag;
} args;
};
/**
* Notify object used by the thread's client, i.e. we will send a
* notify signal to this object, expecting the caller to wait on it.
*/
extern struct notify audio_output_client_notify;
static inline bool
audio_output_is_open(const struct audio_output *ao)
{
return ao->open;
}
static inline bool
audio_output_command_is_finished(const struct audio_output *ao)
{
return ao->command == AO_COMMAND_NONE;
}
#endif
|
