1 /* 2 * spkr.h -- interface definitions for speaker ioctl() 3 * 4 * v1.1 by Eric S. Raymond (esr@snark.thyrsus.com) Feb 1990 5 * modified for 386bsd by Andrew A. Chernov <ache@astral.msk.su> 6 * 386bsd only clean version, all SYSV stuff removed 7 * 8 * $Id: spkr.h,v 1.1 1993/06/16 18:12:23 brezak Exp $ 9 */ 10 11 #ifndef _SPKR_H_ 12 #define _SPKR_H_ 13 14 #ifndef KERNEL 15 #include <sys/ioctl.h> 16 #else 17 #include "ioctl.h" 18 #endif 19 20 #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */ 21 #define SPKRTUNE _IO('S', 2) /* emit tone sequence*/ 22 23 typedef struct 24 { 25 int frequency; /* in hertz */ 26 int duration; /* in 1/100ths of a second */ 27 } 28 tone_t; 29 30 #endif /* _SPKR_H_ */ 31 /* spkr.h ends here */ 32