usr/src/sys/sparc/include/bsd_audioio.h

/*
 * Copyright (c) 1991, 1992, 1993
 *      The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Lawrence Berkeley Laboratory.
 *
 * %sccs.include.redist.c%
 *
 *      @(#)bsd_audioio.h       8.1 (Berkeley) %G%
 *
 * from: $Header: bsd_audioio.h,v 1.5 92/11/21 20:46:46 van Exp $ (LBL)
 */

#ifndef _BSD_AUDIOIO_H_
#define _BSD_AUDIOIO_H_

/*
 * /dev/audio ioctls.  needs comments!
 */
#define AUDIO_MIN_GAIN (0)
#define AUDIO_MAX_GAIN (255)

#define AUDIO_ENCODING_ULAW (1)
#define AUDIO_ENCODING_ALAW (2)

struct audio_prinfo {
        u_int   sample_rate;
        u_int   channels;
        u_int   precision;
        u_int   encoding;
        u_int   gain;
        u_int   port;
        u_long  seek;           /* BSD extension */
        u_int   ispare[3];
        u_int   samples;
        u_int   eof;

        u_char  pause;
        u_char  error;
        u_char  waiting;
        u_char  cspare[3];
        u_char  open;
        u_char  active;

};

struct audio_info {
        struct  audio_prinfo play;
        struct  audio_prinfo record;
        u_int   monitor_gain;
        /* BSD extensions */
        u_int   blocksize;      /* input blocking threshold */
        u_int   hiwat;          /* output high water mark */
        u_int   lowat;          /* output low water mark */
        u_int   backlog;        /* samples of output backlog to gen. */
};
typedef struct audio_info audio_info_t;

#define AUDIO_INITINFO(p)\
        (void)memset((void *)(p), 0xff, sizeof(struct audio_info))

#if (defined(sun) || defined(ibm032)) && !defined(__GNUC__)
#define AUDIO_GETINFO   _IOR(A, 21, struct audio_info)
#define AUDIO_SETINFO   _IOWR(A, 22, struct audio_info)
#define AUDIO_DRAIN     _IO(A, 23)
#define AUDIO_FLUSH     _IO(A, 24)
#define AUDIO_WSEEK     _IOR(A, 25, u_long)
#define AUDIO_RERROR    _IOR(A, 26, int)
#define AUDIO_GETMAP    _IOR(A, 27, struct mapreg)
#define AUDIO_SETMAP    _IOW(A, 28, struct mapreg)
#else
#define AUDIO_GETINFO   _IOR('A', 21, struct audio_info)
#define AUDIO_SETINFO   _IOWR('A', 22, struct audio_info)
#define AUDIO_DRAIN     _IO('A', 23)
#define AUDIO_FLUSH     _IO('A', 24)
#define AUDIO_WSEEK     _IOR('A', 25, u_long)
#define AUDIO_RERROR    _IOR('A', 26, int)
#define AUDIO_GETMAP    _IOR('A', 27, struct mapreg)
#define AUDIO_SETMAP    _IOW('A', 28, struct mapreg)
#endif

#define AUDIO_SPEAKER           1
#define AUDIO_HEADPHONE         2

/*
 * Low level interface.
 */
struct mapreg {
        u_short mr_x[8];
        u_short mr_r[8];
        u_short mr_gx;
        u_short mr_gr;
        u_short mr_ger;
        u_short mr_stgr;
        u_short mr_ftgr;
        u_short mr_atgr;
        u_char  mr_mmr1;
        u_char  mr_mmr2;
};

#endif /* _BSD_AUDIOIO_H_ */