fxr.watson.org: FREEBSD-3-STABLE sys/i386/include/speaker.h

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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 * $FreeBSD: stable/3/sys/i386/include/speaker.h 50582 1999-08-29 16:07:53Z peter $ 8 */ 9 10 #ifndef _MACHINE_SPEAKER_H_ 11 #define _MACHINE_SPEAKER_H_ 12 13 #include <sys/ioccom.h> 14 15 #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */ 16 #define SPKRTUNE _IO('S', 2) /* emit tone sequence*/ 17 18 typedef struct 19 { 20 int frequency; /* in hertz */ 21 int duration; /* in 1/100ths of a second */ 22 } 23 tone_t; 24 25 /* 26 * Strings written to the speaker device are interpreted as tunes and played; 27 * see the spkr(4) man page for details. 28 */ 29 30 #endif /* !_MACHINE_SPEAKER_H_ */

FreeBSD/Linux Kernel Cross Reference sys/i386/include/speaker.h

FreeBSD/Linux Kernel Cross Reference
sys/i386/include/speaker.h