aboutsummaryrefslogtreecommitdiff
path: root/sys/sys/audioio.h
blob: 62a98e832e0fdc0fbce76fcbb394b9a93e7dcfd6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
/*	$OpenBSD: audioio.h,v 1.27 2016/09/14 06:12:20 ratchov Exp $	*/
/*	$NetBSD: audioio.h,v 1.24 1998/08/13 06:28:41 mrg Exp $	*/

/*
 * Copyright (c) 1991-1993 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the Computer Systems
 *	Engineering Group at Lawrence Berkeley Laboratory.
 * 4. Neither the name of the University nor of the Laboratory may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 */

#ifndef _SYS_AUDIOIO_H_
#define _SYS_AUDIOIO_H_

#define AUMODE_PLAY	0x01
#define AUMODE_RECORD	0x02

#define AUDIO_INITPAR(p) \
	(void)memset((void *)(p), 0xff, sizeof(struct audio_swpar))

/*
 * argument to AUDIO_SETPAR and AUDIO_GETPAR ioctls
 */
struct audio_swpar {
	unsigned int sig;		/* if 1, encoding is signed */
	unsigned int le;		/* if 1, encoding is little-endian */
	unsigned int bits;		/* bits per sample */
	unsigned int bps;		/* bytes per sample */
	unsigned int msb;		/* if 1, bits are msb-aligned */
	unsigned int rate;		/* common play & rec sample rate */
	unsigned int pchan;		/* play channels */
	unsigned int rchan;		/* rec channels */
	unsigned int nblks;		/* number of blocks in play buffer */
	unsigned int round;		/* common frames per block */
	unsigned int _spare[6];
};

/*
 * argument to AUDIO_GETSTATUS
 */
struct audio_status {
	int mode;
	int pause;
	int active;
	int _spare[5];
};

/*
 * Parameter for the AUDIO_GETDEV ioctl to determine current
 * audio devices.
 */
#define MAX_AUDIO_DEV_LEN	16
typedef struct audio_device {
	char name[MAX_AUDIO_DEV_LEN];
	char version[MAX_AUDIO_DEV_LEN];
	char config[MAX_AUDIO_DEV_LEN];
} audio_device_t;

struct audio_pos {
	unsigned int play_pos;	/* total bytes played */
	unsigned int play_xrun;	/* bytes of silence inserted */
	unsigned int rec_pos;	/* total bytes recorded */
	unsigned int rec_xrun;	/* bytes dropped */
};

/*
 * Audio device operations
 */
#define AUDIO_GETDEV	_IOR('A', 27, struct audio_device)
#define AUDIO_GETPOS	_IOR('A', 35, struct audio_pos)
#define AUDIO_GETPAR	_IOR('A', 36, struct audio_swpar)
#define AUDIO_SETPAR	_IOWR('A', 37, struct audio_swpar)
#define AUDIO_START	_IO('A', 38)
#define AUDIO_STOP	_IO('A', 39)
#define AUDIO_GETSTATUS	_IOR('A', 40, struct audio_status)

/*
 * Mixer device
 */
#define AUDIO_MIN_GAIN	0
#define AUDIO_MAX_GAIN	255

typedef struct mixer_level {
	int num_channels;
	u_char level[8];	/* [num_channels] */
} mixer_level_t;
#define AUDIO_MIXER_LEVEL_MONO	0
#define AUDIO_MIXER_LEVEL_LEFT	0
#define AUDIO_MIXER_LEVEL_RIGHT	1

/*
 * Device operations
 */

typedef struct audio_mixer_name {
	char name[MAX_AUDIO_DEV_LEN];
	int msg_id;
} audio_mixer_name_t;

typedef struct mixer_devinfo {
	int index;
	audio_mixer_name_t label;
	int type;
#define AUDIO_MIXER_CLASS	0
#define AUDIO_MIXER_ENUM	1
#define AUDIO_MIXER_SET		2
#define AUDIO_MIXER_VALUE	3
	int mixer_class;
	int next, prev;
#define AUDIO_MIXER_LAST	-1
	union {
		struct audio_mixer_enum {
			int num_mem;
			struct {
				audio_mixer_name_t label;
				int ord;
			} member[32];
		} e;
		struct audio_mixer_set {
			int num_mem;
			struct {
				audio_mixer_name_t label;
				int mask;
			} member[32];
		} s;
		struct audio_mixer_value {
			audio_mixer_name_t units;
			int num_channels;
			int delta;
		} v;
	} un;
} mixer_devinfo_t;


typedef struct mixer_ctrl {
	int dev;
	int type;
	union {
		int ord;		/* enum */
		int mask;		/* set */
		mixer_level_t value;	/* value */
	} un;
} mixer_ctrl_t;

/*
 * Mixer operations
 */
#define AUDIO_MIXER_READ		_IOWR('M', 0, mixer_ctrl_t)
#define AUDIO_MIXER_WRITE		_IOWR('M', 1, mixer_ctrl_t)
#define AUDIO_MIXER_DEVINFO		_IOWR('M', 2, mixer_devinfo_t)

/*
 * Well known device names
 */
#define AudioNmicrophone	"mic"
#define AudioNline	"line"
#define AudioNcd	"cd"
#define AudioNdac	"dac"
#define AudioNaux	"aux"
#define AudioNrecord	"record"
#define AudioNvolume	"volume"
#define AudioNmonitor	"monitor"
#define AudioNtreble	"treble"
#define AudioNmid	"mid"
#define AudioNbass	"bass"
#define AudioNbassboost	"bassboost"
#define AudioNspeaker	"spkr"
#define AudioNheadphone	"hp"
#define AudioNoutput	"output"
#define AudioNinput	"input"
#define AudioNmaster	"master"
#define AudioNstereo	"stereo"
#define AudioNmono	"mono"
#define AudioNloudness	"loudness"
#define AudioNspatial	"spatial"
#define AudioNsurround	"surround"
#define AudioNpseudo	"pseudo"
#define AudioNmute	"mute"
#define AudioNenhanced	"enhanced"
#define AudioNpreamp	"preamp"
#define AudioNon	"on"
#define AudioNoff	"off"
#define AudioNmode	"mode"
#define AudioNsource	"source"
#define AudioNfmsynth	"fmsynth"
#define AudioNwave	"wave"
#define AudioNmidi	"midi"
#define AudioNmixerout	"mixerout"
#define AudioNswap	"swap"	/* swap left and right channels */
#define AudioNagc	"agc"
#define AudioNdelay	"delay"
#define AudioNselect	"select" /* select destination */
#define AudioNvideo	"video"
#define AudioNcenter	"center"
#define AudioNdepth	"depth"
#define AudioNlfe	"lfe"
#define AudioNextamp	"extamp"

#define AudioCinputs	"inputs"
#define AudioCoutputs	"outputs"
#define AudioCrecord	"record"
#define AudioCmonitor	"monitor"
#define AudioCequalization	"equalization"

#endif /* !_SYS_AUDIOIO_H_ */