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/*
* speaker.h -- interface definitions for speaker ioctl()
*
* v1.4 by Eric S. Raymond ([email protected]) Aug 1993
* modified for FreeBSD by Andrew A. Chernov <[email protected]>
*/
#ifndef _DEV_SPEAKER_SPEAKER_H_
#define _DEV_SPEAKER_SPEAKER_H_
#include <sys/ioccom.h>
#define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
#define SPKRTUNE _IO('S', 2) /* emit tone sequence*/
typedef struct
{
int frequency; /* in hertz */
int duration; /* in 1/100ths of a second */
} tone_t;
/*
* Strings written to the speaker device are interpreted as tunes and played;
* see the spkr(4) man page for details.
*/
#endif /* !_DEV_SPEAKER_SPEAKER_H_ */