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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
17typedef 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
23typedef 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
30typedef 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
39typedef 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
46typedef 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_ */