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
|
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */
/*
* audio.h - DEPRECATED MPEG-TS audio decoder API
*
* NOTE: should not be used on future drivers
*
* Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
* & Marcus Metzler <marcus@convergence.de>
* for convergence integrated media GmbH
*/
#ifndef _DVBAUDIO_H_
#define _DVBAUDIO_H_
#include <linux/types.h>
typedef enum {
AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
} audio_stream_source_t;
typedef enum {
AUDIO_STOPPED, /* Device is stopped */
AUDIO_PLAYING, /* Device is currently playing */
AUDIO_PAUSED /* Device is paused */
} audio_play_state_t;
typedef enum {
AUDIO_STEREO,
AUDIO_MONO_LEFT,
AUDIO_MONO_RIGHT,
AUDIO_MONO,
AUDIO_STEREO_SWAPPED
} audio_channel_select_t;
typedef struct audio_mixer {
unsigned int volume_left;
unsigned int volume_right;
/* what else do we need? bass, pass-through, ... */
} audio_mixer_t;
typedef struct audio_status {
int AV_sync_state; /* sync audio and video? */
int mute_state; /* audio is muted */
audio_play_state_t play_state; /* current playback state */
audio_stream_source_t stream_source; /* current stream source */
audio_channel_select_t channel_select; /* currently selected channel */
int bypass_mode; /* pass on audio data to */
audio_mixer_t mixer_state; /* current mixer state */
} audio_status_t; /* separate decoder hardware */
/* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
#define AUDIO_CAP_DTS 1
#define AUDIO_CAP_LPCM 2
#define AUDIO_CAP_MP1 4
#define AUDIO_CAP_MP2 8
#define AUDIO_CAP_MP3 16
#define AUDIO_CAP_AAC 32
#define AUDIO_CAP_OGG 64
#define AUDIO_CAP_SDDS 128
#define AUDIO_CAP_AC3 256
#define AUDIO_STOP _IO('o', 1)
#define AUDIO_PLAY _IO('o', 2)
#define AUDIO_PAUSE _IO('o', 3)
#define AUDIO_CONTINUE _IO('o', 4)
#define AUDIO_SELECT_SOURCE _IO('o', 5)
#define AUDIO_SET_MUTE _IO('o', 6)
#define AUDIO_SET_AV_SYNC _IO('o', 7)
#define AUDIO_SET_BYPASS_MODE _IO('o', 8)
#define AUDIO_CHANNEL_SELECT _IO('o', 9)
#define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
#define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
#define AUDIO_CLEAR_BUFFER _IO('o', 12)
#define AUDIO_SET_ID _IO('o', 13)
#define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
#define AUDIO_SET_STREAMTYPE _IO('o', 15)
#define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
#endif /* _DVBAUDIO_H_ */
|
