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 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Lesser Public License
13 * as published by the Free Software Foundation; either version 2.1
14 * of the License, or (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
24 *
25 */
26
27 #ifndef _DVBAUDIO_H_
28 #define _DVBAUDIO_H_
29
30 #include <linux/types.h>
31
32 typedef enum {
33 AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
34 AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
35 } audio_stream_source_t;
36
37
38 typedef enum {
39 AUDIO_STOPPED, /* Device is stopped */
40 AUDIO_PLAYING, /* Device is currently playing */
41 AUDIO_PAUSED /* Device is paused */
42 } audio_play_state_t;
43
44
45 typedef enum {
46 AUDIO_STEREO,
47 AUDIO_MONO_LEFT,
48 AUDIO_MONO_RIGHT,
49 AUDIO_MONO,
50 AUDIO_STEREO_SWAPPED
51 } audio_channel_select_t;
52
53
54 typedef struct audio_mixer {
55 unsigned int volume_left;
56 unsigned int volume_right;
57 /* what else do we need? bass, pass-through, ... */
58 } audio_mixer_t;
59
60
61 typedef struct audio_status {
62 int AV_sync_state; /* sync audio and video? */
63 int mute_state; /* audio is muted */
64 audio_play_state_t play_state; /* current playback state */
65 audio_stream_source_t stream_source; /* current stream source */
66 audio_channel_select_t channel_select; /* currently selected channel */
67 int bypass_mode; /* pass on audio data to */
68 audio_mixer_t mixer_state; /* current mixer state */
69 } audio_status_t; /* separate decoder hardware */
70
71
72 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
73 #define AUDIO_CAP_DTS 1
74 #define AUDIO_CAP_LPCM 2
75 #define AUDIO_CAP_MP1 4
76 #define AUDIO_CAP_MP2 8
77 #define AUDIO_CAP_MP3 16
78 #define AUDIO_CAP_AAC 32
79 #define AUDIO_CAP_OGG 64
80 #define AUDIO_CAP_SDDS 128
81 #define AUDIO_CAP_AC3 256
82
83 #define AUDIO_STOP _IO('o', 1)
84 #define AUDIO_PLAY _IO('o', 2)
85 #define AUDIO_PAUSE _IO('o', 3)
86 #define AUDIO_CONTINUE _IO('o', 4)
87 #define AUDIO_SELECT_SOURCE _IO('o', 5)
88 #define AUDIO_SET_MUTE _IO('o', 6)
89 #define AUDIO_SET_AV_SYNC _IO('o', 7)
90 #define AUDIO_SET_BYPASS_MODE _IO('o', 8)
91 #define AUDIO_CHANNEL_SELECT _IO('o', 9)
92 #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
93
94 #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
95 #define AUDIO_CLEAR_BUFFER _IO('o', 12)
96 #define AUDIO_SET_ID _IO('o', 13)
97 #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
98 #define AUDIO_SET_STREAMTYPE _IO('o', 15)
99 #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
100
101 #endif /* _DVBAUDIO_H_ */