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/* $NetBSD: spkrio.h,v 1.3 2017/06/11 03:33:48 nat Exp $ */
/*
* spkrio.h -- interface definitions for speaker ioctl()
*/
#ifndef _DEV_SPKRIO_H_
#define _DEV_SPKRIO_H_
#include <sys/ioccom.h>
#define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
#define SPKRTUNE _IO('S', 2) /* emit tone sequence */
#define SPKRGETVOL _IOR('S', 3, u_int) /* get volume */
#define SPKRSETVOL _IOW('S', 4, u_int) /* set volume */
typedef struct {
int frequency; /* in hertz */
int duration; /* in 1/100ths of a second */
} tone_t;
#endif
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