1/*
2 * speaker.h -- interface definitions for speaker ioctl()
3 *
4 * v1.4 by Eric S. Raymond (esr@snark.thyrsus.com) Aug 1993
5 * modified for FreeBSD by Andrew A. Chernov <ache@astral.msk.su>
6 */
7
8#ifndef _DEV_SPEAKER_SPEAKER_H_
9#define _DEV_SPEAKER_SPEAKER_H_
10
11#include <sys/ioccom.h>
12
13#define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
14#define SPKRTUNE _IO('S', 2) /* emit tone sequence*/
15
16typedef struct
17{
18 int frequency; /* in hertz */
19 int duration; /* in 1/100ths of a second */
20} tone_t;
21
22/*
23 * Strings written to the speaker device are interpreted as tunes and played;
24 * see the spkr(4) man page for details.
25 */
26
27#endif /* !_DEV_SPEAKER_SPEAKER_H_ */