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1da177e4 LT |
1 | /* |
2 | * audio.h | |
3 | * | |
4 | * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de> | |
5 | * & Marcus Metzler <marcus@convergence.de> | |
6 | * for convergence integrated media GmbH | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Lesser Public License | |
10 | * as published by the Free Software Foundation; either version 2.1 | |
11 | * of the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
21 | * | |
22 | */ | |
23 | ||
24 | #ifndef _DVBAUDIO_H_ | |
25 | #define _DVBAUDIO_H_ | |
26 | ||
27 | #ifdef __KERNEL__ | |
28 | #include <linux/types.h> | |
29 | #else | |
30 | #include <stdint.h> | |
31 | #endif | |
32 | ||
33 | ||
34 | typedef enum { | |
afd1a0c9 | 35 | AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */ |
1da177e4 LT |
36 | AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */ |
37 | } audio_stream_source_t; | |
38 | ||
39 | ||
40 | typedef enum { | |
41 | AUDIO_STOPPED, /* Device is stopped */ | |
afd1a0c9 | 42 | AUDIO_PLAYING, /* Device is currently playing */ |
1da177e4 LT |
43 | AUDIO_PAUSED /* Device is paused */ |
44 | } audio_play_state_t; | |
45 | ||
46 | ||
47 | typedef enum { | |
afd1a0c9 MCC |
48 | AUDIO_STEREO, |
49 | AUDIO_MONO_LEFT, | |
2435be11 HV |
50 | AUDIO_MONO_RIGHT, |
51 | AUDIO_MONO, | |
52 | AUDIO_STEREO_SWAPPED | |
1da177e4 LT |
53 | } audio_channel_select_t; |
54 | ||
55 | ||
56 | typedef struct audio_mixer { | |
afd1a0c9 MCC |
57 | unsigned int volume_left; |
58 | unsigned int volume_right; | |
1da177e4 LT |
59 | // what else do we need? bass, pass-through, ... |
60 | } audio_mixer_t; | |
61 | ||
62 | ||
63 | typedef struct audio_status { | |
afd1a0c9 MCC |
64 | int AV_sync_state; /* sync audio and video? */ |
65 | int mute_state; /* audio is muted */ | |
66 | audio_play_state_t play_state; /* current playback state */ | |
67 | audio_stream_source_t stream_source; /* current stream source */ | |
68 | audio_channel_select_t channel_select; /* currently selected channel */ | |
69 | int bypass_mode; /* pass on audio data to */ | |
1da177e4 LT |
70 | audio_mixer_t mixer_state; /* current mixer state */ |
71 | } audio_status_t; /* separate decoder hardware */ | |
72 | ||
73 | ||
74 | typedef | |
75 | struct audio_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */ | |
76 | int vocal1; /* into left and right t at 70% each */ | |
77 | int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/ | |
78 | int melody; /* mixed into the left channel and */ | |
afd1a0c9 MCC |
79 | /* Vocal2 into the right channel at 100% each. */ |
80 | /* if Melody is non-zero, the melody channel gets mixed*/ | |
1da177e4 LT |
81 | } audio_karaoke_t; /* into left and right */ |
82 | ||
83 | ||
84 | typedef uint16_t audio_attributes_t; | |
85 | /* bits: descr. */ | |
86 | /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */ | |
87 | /* 12 multichannel extension */ | |
88 | /* 11-10 audio type (0=not spec, 1=language included) */ | |
89 | /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */ | |
90 | /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */ | |
91 | /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */ | |
92 | /* 2- 0 number of audio channels (n+1 channels) */ | |
93 | ||
94 | ||
95 | /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */ | |
96 | #define AUDIO_CAP_DTS 1 | |
97 | #define AUDIO_CAP_LPCM 2 | |
98 | #define AUDIO_CAP_MP1 4 | |
99 | #define AUDIO_CAP_MP2 8 | |
100 | #define AUDIO_CAP_MP3 16 | |
101 | #define AUDIO_CAP_AAC 32 | |
102 | #define AUDIO_CAP_OGG 64 | |
103 | #define AUDIO_CAP_SDDS 128 | |
104 | #define AUDIO_CAP_AC3 256 | |
105 | ||
106 | #define AUDIO_STOP _IO('o', 1) | |
107 | #define AUDIO_PLAY _IO('o', 2) | |
108 | #define AUDIO_PAUSE _IO('o', 3) | |
109 | #define AUDIO_CONTINUE _IO('o', 4) | |
110 | #define AUDIO_SELECT_SOURCE _IO('o', 5) | |
111 | #define AUDIO_SET_MUTE _IO('o', 6) | |
112 | #define AUDIO_SET_AV_SYNC _IO('o', 7) | |
113 | #define AUDIO_SET_BYPASS_MODE _IO('o', 8) | |
114 | #define AUDIO_CHANNEL_SELECT _IO('o', 9) | |
115 | #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t) | |
116 | ||
117 | #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int) | |
118 | #define AUDIO_CLEAR_BUFFER _IO('o', 12) | |
119 | #define AUDIO_SET_ID _IO('o', 13) | |
120 | #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t) | |
121 | #define AUDIO_SET_STREAMTYPE _IO('o', 15) | |
122 | #define AUDIO_SET_EXT_ID _IO('o', 16) | |
123 | #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t) | |
124 | #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t) | |
125 | ||
f05cce86 AO |
126 | /** |
127 | * AUDIO_GET_PTS | |
128 | * | |
129 | * Read the 33 bit presentation time stamp as defined | |
130 | * in ITU T-REC-H.222.0 / ISO/IEC 13818-1. | |
131 | * | |
132 | * The PTS should belong to the currently played | |
133 | * frame if possible, but may also be a value close to it | |
134 | * like the PTS of the last decoded frame or the last PTS | |
135 | * extracted by the PES parser. | |
136 | */ | |
137 | #define AUDIO_GET_PTS _IOR('o', 19, __u64) | |
2435be11 | 138 | #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20) |
f05cce86 | 139 | |
1da177e4 | 140 | #endif /* _DVBAUDIO_H_ */ |