2 * Copyright (c) 1994 Søren Schmidt
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer
10 * in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 * $FreeBSD: src/sys/i386/include/pcaudioio.h,v 1.10 1999/08/28 00:44:20 peter Exp $
29 * $DragonFly: src/sys/platform/pc32/include/pcaudioio.h,v 1.2 2003/06/17 04:28:35 dillon Exp $
32 #ifndef _MACHINE_PCAUDIOIO_H_
33 #define _MACHINE_PCAUDIOIO_H_
35 #include <sys/ioccom.h>
37 typedef struct audio_prinfo {
38 unsigned sample_rate; /* samples per second */
39 unsigned channels; /* # of channels (interleaved) */
40 unsigned precision; /* sample size in bits */
41 unsigned encoding; /* encoding method used */
43 unsigned gain; /* volume level: 0 - 255 */
44 unsigned port; /* input/output device */
47 unsigned samples; /* samples played */
48 unsigned eof; /* ?!? */
49 unsigned char pause; /* !=0 pause, ==0 continue */
50 unsigned char error; /* !=0 if overflow/underflow */
51 unsigned char waiting; /* !=0 if others wants access */
52 unsigned char _fill2[3];
54 unsigned char open; /* is device open */
55 unsigned char active; /* !=0 if sound hardware is active */
58 typedef struct audio_info {
60 audio_prinfo_t record;
61 unsigned monitor_gain;
65 #define AUDIO_ENCODING_ULAW (1) /* u-law encoding */
66 #define AUDIO_ENCODING_ALAW (2) /* A-law encoding */
67 #define AUDIO_ENCODING_RAW (3) /* linear encoding */
69 #define AUDIO_MIN_GAIN (0) /* minimum volume value */
70 #define AUDIO_MAX_GAIN (255) /* maximum volume value */
72 #define AUDIO_INITINFO(i) memset((void*)i, 0xff, sizeof(audio_info_t))
74 #define AUDIO_GETINFO _IOR('A', 1, audio_info_t)
75 #define AUDIO_SETINFO _IOWR('A', 2, audio_info_t)
76 #define AUDIO_DRAIN _IO('A', 3)
77 #define AUDIO_FLUSH _IO('A', 4)
79 /* compatibility to /dev/audio */
80 #define AUDIO_COMPAT_DRAIN _IO('P', 1)
81 #define AUDIO_COMPAT_FLUSH _IO('P', 0)
83 #endif /* !_MACHINE_PCAUDIOIO_H_ */