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audio.h
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1 /*
2  * audio.h
3  *
4  * Copyright (C) 2000 Ralph Metzler <[email protected]>
5  * & Marcus Metzler <[email protected]>
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 #include <linux/types.h>
28 
29 typedef enum {
30  AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
31  AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
33 
34 
35 typedef enum {
36  AUDIO_STOPPED, /* Device is stopped */
37  AUDIO_PLAYING, /* Device is currently playing */
38  AUDIO_PAUSED /* Device is paused */
40 
41 
42 typedef enum {
49 
50 
51 typedef struct audio_mixer {
52  unsigned int volume_left;
53  unsigned int volume_right;
54  // what else do we need? bass, pass-through, ...
56 
57 
58 typedef struct audio_status {
59  int AV_sync_state; /* sync audio and video? */
60  int mute_state; /* audio is muted */
61  audio_play_state_t play_state; /* current playback state */
62  audio_stream_source_t stream_source; /* current stream source */
63  audio_channel_select_t channel_select; /* currently selected channel */
64  int bypass_mode; /* pass on audio data to */
65  audio_mixer_t mixer_state; /* current mixer state */
66 } audio_status_t; /* separate decoder hardware */
67 
68 
69 typedef
70 struct audio_karaoke { /* if Vocal1 or Vocal2 are non-zero, they get mixed */
71  int vocal1; /* into left and right t at 70% each */
72  int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/
73  int melody; /* mixed into the left channel and */
74  /* Vocal2 into the right channel at 100% each. */
75  /* if Melody is non-zero, the melody channel gets mixed*/
76 } audio_karaoke_t; /* into left and right */
77 
78 
80 /* bits: descr. */
81 /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */
82 /* 12 multichannel extension */
83 /* 11-10 audio type (0=not spec, 1=language included) */
84 /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */
85 /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */
86 /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */
87 /* 2- 0 number of audio channels (n+1 channels) */
88 
89 
90 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
91 #define AUDIO_CAP_DTS 1
92 #define AUDIO_CAP_LPCM 2
93 #define AUDIO_CAP_MP1 4
94 #define AUDIO_CAP_MP2 8
95 #define AUDIO_CAP_MP3 16
96 #define AUDIO_CAP_AAC 32
97 #define AUDIO_CAP_OGG 64
98 #define AUDIO_CAP_SDDS 128
99 #define AUDIO_CAP_AC3 256
100 
101 #define AUDIO_STOP _IO('o', 1)
102 #define AUDIO_PLAY _IO('o', 2)
103 #define AUDIO_PAUSE _IO('o', 3)
104 #define AUDIO_CONTINUE _IO('o', 4)
105 #define AUDIO_SELECT_SOURCE _IO('o', 5)
106 #define AUDIO_SET_MUTE _IO('o', 6)
107 #define AUDIO_SET_AV_SYNC _IO('o', 7)
108 #define AUDIO_SET_BYPASS_MODE _IO('o', 8)
109 #define AUDIO_CHANNEL_SELECT _IO('o', 9)
110 #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
111 
112 #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
113 #define AUDIO_CLEAR_BUFFER _IO('o', 12)
114 #define AUDIO_SET_ID _IO('o', 13)
115 #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
116 #define AUDIO_SET_STREAMTYPE _IO('o', 15)
117 #define AUDIO_SET_EXT_ID _IO('o', 16)
118 #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t)
119 #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t)
120 
132 #define AUDIO_GET_PTS _IOR('o', 19, __u64)
133 #define AUDIO_BILINGUAL_CHANNEL_SELECT _IO('o', 20)
134 
135 #endif /* _DVBAUDIO_H_ */