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/* $OpenBSD: libsa_priv.h,v 1.1 2008/10/26 08:49:44 ratchov 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 LIBSA_PRIV_H
#define LIBSA_PRIV_H
#include <sys/param.h>
#include "libsa.h"
/*
* private ``handle'' structure
*/
struct sa_hdl {
struct sa_ops *ops;
void (*cb_pos)(void *, int); /* call-back for realpos changes */
void *cb_addr; /* user priv. data */
unsigned mode; /* SA_PLAY | SA_REC */
int started; /* true if started */
int nbio; /* true if non-blocking io */
int eof; /* true if error occured */
#ifdef DEBUG
int debug; /* debug flag */
unsigned long long pollcnt; /* times sa_revents was called */
unsigned long long wcnt; /* bytes written with sa_write() */
unsigned long long rcnt; /* bytes read with sa_read() */
long long realpos;
struct timeval tv;
struct sa_par par;
#endif
};
/*
* operations every device should support
*/
struct sa_ops {
void (*close)(struct sa_hdl *);
int (*setpar)(struct sa_hdl *, struct sa_par *);
int (*getpar)(struct sa_hdl *, struct sa_par *);
int (*getcap)(struct sa_hdl *, struct sa_cap *);
size_t (*write)(struct sa_hdl *, void *, size_t);
size_t (*read)(struct sa_hdl *, void *, size_t);
int (*start)(struct sa_hdl *);
int (*stop)(struct sa_hdl *);
int (*pollfd)(struct sa_hdl *, struct pollfd *, int);
int (*revents)(struct sa_hdl *, struct pollfd *);
};
void sa_create(struct sa_hdl *, struct sa_ops *, unsigned, int);
void sa_destroy(struct sa_hdl *);
void sa_onmove_cb(struct sa_hdl *, int);
#endif /* !defined(LIBSA_PRIV_H) */
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