linux-headers (unknown)
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_ */
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