1 | /* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ |
2 | /* |
3 | * audio.h - DEPRECATED MPEG-TS audio decoder API |
4 | * |
5 | * NOTE: should not be used on future drivers |
6 | * |
7 | * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> |
8 | * & Marcus Metzler <marcus@convergence.de> |
9 | * for convergence integrated media GmbH |
10 | */ |
11 | |
12 | #ifndef _DVBAUDIO_H_ |
13 | #define _DVBAUDIO_H_ |
14 | |
15 | #include <linux/types.h> |
16 | |
17 | typedef enum { |
18 | AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ |
19 | AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ |
20 | } audio_stream_source_t; |
21 | |
22 | |
23 | typedef enum { |
24 | AUDIO_STOPPED, /* Device is stopped */ |
25 | AUDIO_PLAYING, /* Device is currently playing */ |
26 | AUDIO_PAUSED /* Device is paused */ |
27 | } audio_play_state_t; |
28 | |
29 | |
30 | typedef enum { |
31 | AUDIO_STEREO, |
32 | AUDIO_MONO_LEFT, |
33 | AUDIO_MONO_RIGHT, |
34 | AUDIO_MONO, |
35 | AUDIO_STEREO_SWAPPED |
36 | } audio_channel_select_t; |
37 | |
38 | |
39 | typedef struct audio_mixer { |
40 | unsigned int volume_left; |
41 | unsigned int volume_right; |
42 | /* what else do we need? bass, pass-through, ... */ |
43 | } audio_mixer_t; |
44 | |
45 | |
46 | typedef struct audio_status { |
47 | int AV_sync_state; /* sync audio and video? */ |
48 | int mute_state; /* audio is muted */ |
49 | audio_play_state_t play_state; /* current playback state */ |
50 | audio_stream_source_t stream_source; /* current stream source */ |
51 | audio_channel_select_t channel_select; /* currently selected channel */ |
52 | int bypass_mode; /* pass on audio data to */ |
53 | audio_mixer_t mixer_state; /* current mixer state */ |
54 | } audio_status_t; /* separate decoder hardware */ |
55 | |
56 | |
57 | /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ |
58 | #define AUDIO_CAP_DTS 1 |
59 | #define AUDIO_CAP_LPCM 2 |
60 | #define AUDIO_CAP_MP1 4 |
61 | #define AUDIO_CAP_MP2 8 |
62 | #define AUDIO_CAP_MP3 16 |
63 | #define AUDIO_CAP_AAC 32 |
64 | #define AUDIO_CAP_OGG 64 |
65 | #define AUDIO_CAP_SDDS 128 |
66 | #define AUDIO_CAP_AC3 256 |
67 | |
68 | #define AUDIO_STOP _IO('o', 1) |
69 | #define AUDIO_PLAY _IO('o', 2) |
70 | #define AUDIO_PAUSE _IO('o', 3) |
71 | #define AUDIO_CONTINUE _IO('o', 4) |
72 | #define AUDIO_SELECT_SOURCE _IO('o', 5) |
73 | #define AUDIO_SET_MUTE _IO('o', 6) |
74 | #define AUDIO_SET_AV_SYNC _IO('o', 7) |
75 | #define AUDIO_SET_BYPASS_MODE _IO('o', 8) |
76 | #define AUDIO_CHANNEL_SELECT _IO('o', 9) |
77 | #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) |
78 | |
79 | #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) |
80 | #define AUDIO_CLEAR_BUFFER _IO('o', 12) |
81 | #define AUDIO_SET_ID _IO('o', 13) |
82 | #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) |
83 | #define AUDIO_SET_STREAMTYPE _IO('o', 15) |
84 | #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20) |
85 | |
86 | #endif /* _DVBAUDIO_H_ */ |
87 | |