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/* $OpenBSD: sio_priv.h,v 1.9 2015/01/16 16:48:52 deraadt Exp $ */
/*
* Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef SNDIO_PRIV_H
#define SNDIO_PRIV_H
#include "sndio.h"
#define SIO_MAXNFDS 16
/*
* private ``handle'' structure
*/
struct sio_hdl {
struct sio_ops *ops;
void (*move_cb)(void *, int); /* call-back for realpos changes */
void *move_addr; /* user priv. data for move_cb */
void (*vol_cb)(void *, unsigned); /* call-back for volume changes */
void *vol_addr; /* user priv. data for vol_cb */
unsigned mode; /* SIO_PLAY | SIO_REC */
int started; /* true if started */
int nbio; /* true if non-blocking io */
int eof; /* true if error occured */
int rdrop; /* recorded bytes to drop */
int wsil; /* silence to play */
int rused; /* bytes used in read buffer */
int wused; /* bytes used in write buffer */
long long cpos; /* clock since start */
struct sio_par par;
#ifdef DEBUG
unsigned long long pollcnt; /* times sio_revents was called */
long long start_nsec;
#endif
};
/*
* operations every device should support
*/
struct sio_ops {
void (*close)(struct sio_hdl *);
int (*setpar)(struct sio_hdl *, struct sio_par *);
int (*getpar)(struct sio_hdl *, struct sio_par *);
int (*getcap)(struct sio_hdl *, struct sio_cap *);
size_t (*write)(struct sio_hdl *, const void *, size_t);
size_t (*read)(struct sio_hdl *, void *, size_t);
int (*start)(struct sio_hdl *);
int (*stop)(struct sio_hdl *);
int (*nfds)(struct sio_hdl *);
int (*pollfd)(struct sio_hdl *, struct pollfd *, int);
int (*revents)(struct sio_hdl *, struct pollfd *);
int (*setvol)(struct sio_hdl *, unsigned);
void (*getvol)(struct sio_hdl *);
};
struct sio_hdl *_sio_aucat_open(const char *, unsigned, int);
struct sio_hdl *_sio_sun_open(const char *, unsigned, int);
void _sio_create(struct sio_hdl *, struct sio_ops *, unsigned, int);
void _sio_destroy(struct sio_hdl *);
void _sio_onmove_cb(struct sio_hdl *, int);
void _sio_onvol_cb(struct sio_hdl *, unsigned);
#ifdef DEBUG
void _sio_printpos(struct sio_hdl *);
#endif
#endif /* !defined(SNDIO_PRIV_H) */
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