4 * Copyright (C) 2000 Ralph Metzler <ralph@convergence.de>
5 * & Marcus Metzler <marcus@convergence.de>
6 * for convergence integrated media GmbH
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.
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.
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.
28 #include <linux/types.h>
35 AUDIO_SOURCE_DEMUX, /* Select the demux as the main source */
36 AUDIO_SOURCE_MEMORY /* Select internal memory as the main source */
37 } audio_stream_source_t;
41 AUDIO_STOPPED, /* Device is stopped */
42 AUDIO_PLAYING, /* Device is currently playing */
43 AUDIO_PAUSED /* Device is paused */
51 } audio_channel_select_t;
54 typedef struct audio_mixer {
55 unsigned int volume_left;
56 unsigned int volume_right;
57 // what else do we need? bass, pass-through, ...
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 */
73 struct audio_karaoke{ /* if Vocal1 or Vocal2 are non-zero, they get mixed */
74 int vocal1; /* into left and right t at 70% each */
75 int vocal2; /* if both, Vocal1 and Vocal2 are non-zero, Vocal1 gets*/
76 int melody; /* mixed into the left channel and */
77 /* Vocal2 into the right channel at 100% each. */
78 /* if Melody is non-zero, the melody channel gets mixed*/
79 } audio_karaoke_t; /* into left and right */
82 typedef uint16_t audio_attributes_t;
84 /* 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, */
85 /* 12 multichannel extension */
86 /* 11-10 audio type (0=not spec, 1=language included) */
87 /* 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) */
88 /* 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, */
89 /* 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) */
90 /* 2- 0 number of audio channels (n+1 channels) */
93 /* for GET_CAPABILITIES and SET_FORMAT, the latter should only set one bit */
94 #define AUDIO_CAP_DTS 1
95 #define AUDIO_CAP_LPCM 2
96 #define AUDIO_CAP_MP1 4
97 #define AUDIO_CAP_MP2 8
98 #define AUDIO_CAP_MP3 16
99 #define AUDIO_CAP_AAC 32
100 #define AUDIO_CAP_OGG 64
101 #define AUDIO_CAP_SDDS 128
102 #define AUDIO_CAP_AC3 256
104 #define AUDIO_STOP _IO('o', 1)
105 #define AUDIO_PLAY _IO('o', 2)
106 #define AUDIO_PAUSE _IO('o', 3)
107 #define AUDIO_CONTINUE _IO('o', 4)
108 #define AUDIO_SELECT_SOURCE _IO('o', 5)
109 #define AUDIO_SET_MUTE _IO('o', 6)
110 #define AUDIO_SET_AV_SYNC _IO('o', 7)
111 #define AUDIO_SET_BYPASS_MODE _IO('o', 8)
112 #define AUDIO_CHANNEL_SELECT _IO('o', 9)
113 #define AUDIO_GET_STATUS _IOR('o', 10, audio_status_t)
115 #define AUDIO_GET_CAPABILITIES _IOR('o', 11, unsigned int)
116 #define AUDIO_CLEAR_BUFFER _IO('o', 12)
117 #define AUDIO_SET_ID _IO('o', 13)
118 #define AUDIO_SET_MIXER _IOW('o', 14, audio_mixer_t)
119 #define AUDIO_SET_STREAMTYPE _IO('o', 15)
120 #define AUDIO_SET_EXT_ID _IO('o', 16)
121 #define AUDIO_SET_ATTRIBUTES _IOW('o', 17, audio_attributes_t)
122 #define AUDIO_SET_KARAOKE _IOW('o', 18, audio_karaoke_t)
127 * Read the 33 bit presentation time stamp as defined
128 * in ITU T-REC-H.222.0 / ISO/IEC 13818-1.
130 * The PTS should belong to the currently played
131 * frame if possible, but may also be a value close to it
132 * like the PTS of the last decoded frame or the last PTS
133 * extracted by the PES parser.
135 #define AUDIO_GET_PTS _IOR('o', 19, __u64)
137 #endif /* _DVBAUDIO_H_ */