2 * speaker.h -- interface definitions for speaker ioctl()
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>
10 #ifndef _MACHINE_SPEAKER_H_
11 #define _MACHINE_SPEAKER_H_
13 #include <sys/ioccom.h>
15 #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
16 #define SPKRTUNE _IO('S', 2) /* emit tone sequence*/
20 int frequency; /* in hertz */
21 int duration; /* in 1/100ths of a second */
26 * Strings written to the speaker device are interpreted as tunes and played;
27 * see the spkr(4) man page for details.
30 #endif /* !_MACHINE_SPEAKER_H_ */