xref: /openbmc/linux/include/uapi/linux/dvb/audio.h (revision 8478afa8)
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