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>
7 * $FreeBSD: src/sys/i386/include/speaker.h,v 1.6 1999/08/28 00:44:26 peter Exp $
8 * $DragonFly: src/sys/platform/pc32/include/speaker.h,v 1.2 2003/06/17 04:28:36 dillon Exp $
11 #ifndef _MACHINE_SPEAKER_H_
12 #define _MACHINE_SPEAKER_H_
14 #include <sys/ioccom.h>
16 #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
17 #define SPKRTUNE _IO('S', 2) /* emit tone sequence*/
21 int frequency; /* in hertz */
22 int duration; /* in 1/100ths of a second */
27 * Strings written to the speaker device are interpreted as tunes and played;
28 * see the spkr(4) man page for details.
31 #endif /* !_MACHINE_SPEAKER_H_ */