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/* $OpenBSD: dev.h,v 1.34 2011/12/02 10:34:50 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 DEV_H
#define DEV_H
#include "aparams.h"
struct aproc;
struct abuf;
struct dev {
struct dev *next;
/*
* desired parameters
*/
unsigned reqmode; /* mode */
struct aparams reqipar, reqopar; /* parameters */
unsigned reqbufsz; /* buffer size */
unsigned reqround; /* block size */
unsigned hold; /* hold the device open ? */
unsigned autovol; /* auto adjust playvol ? */
unsigned autostart; /* don't wait for MMC start */
unsigned refcnt; /* number of openers */
#define DEV_NMAX 16 /* max number of devices */
unsigned num; /* serial number */
#define DEV_CLOSED 0 /* closed */
#define DEV_INIT 1 /* stopped */
#define DEV_START 2 /* ready to start */
#define DEV_RUN 3 /* started */
unsigned pstate; /* on of DEV_xxx */
char *path; /* sio path */
/*
* actual parameters and runtime state (i.e. once opened)
*/
unsigned mode; /* bitmap of MODE_xxx */
unsigned bufsz, round, rate;
struct aparams ipar, opar;
struct aproc *mix, *sub, *submon;
struct aproc *rec, *play, *mon;
struct aproc *midi;
struct devctl {
struct devctl *next;
unsigned mode;
char *path;
} *ctl_list;
/* volume control and MMC/MTC */
#define CTL_NSLOT 8
#define CTL_NAMEMAX 8
unsigned serial;
struct ctl_slot {
struct ctl_ops {
void (*vol)(void *, unsigned);
void (*start)(void *);
void (*stop)(void *);
void (*loc)(void *, unsigned);
void (*quit)(void *);
} *ops;
void *arg;
unsigned unit;
char name[CTL_NAMEMAX];
unsigned serial;
unsigned vol;
unsigned tstate;
} slot[CTL_NSLOT];
#define CTL_OFF 0 /* ignore MMC messages */
#define CTL_STOP 1 /* stopped, can't start */
#define CTL_START 2 /* attempting to start */
#define CTL_RUN 3 /* started */
unsigned tstate; /* one of above */
unsigned origin; /* MTC start time */
};
extern struct dev *dev_list;
void dev_dbg(struct dev *);
int dev_init(struct dev *);
int dev_run(struct dev *);
int dev_ref(struct dev *);
void dev_unref(struct dev *);
void dev_del(struct dev *);
void dev_wakeup(struct dev *);
void dev_drain(struct dev *);
struct dev *dev_new(char *, unsigned, unsigned, unsigned, unsigned, unsigned);
void dev_adjpar(struct dev *, unsigned, struct aparams *, struct aparams *);
int devctl_add(struct dev *, char *, unsigned);
void dev_midiattach(struct dev *, struct abuf *, struct abuf *);
unsigned dev_roundof(struct dev *, unsigned);
int dev_getpos(struct dev *);
void dev_attach(struct dev *, char *, unsigned,
struct abuf *, struct aparams *, unsigned,
struct abuf *, struct aparams *, unsigned,
unsigned, int);
void dev_setvol(struct dev *, struct abuf *, int);
void dev_slotdbg(struct dev *, int);
int dev_slotnew(struct dev *, char *, struct ctl_ops *, void *, int);
void dev_slotdel(struct dev *, int);
void dev_slotvol(struct dev *, int, unsigned);
int dev_slotstart(struct dev *, int);
void dev_slotstop(struct dev *, int);
void dev_mmcstart(struct dev *);
void dev_mmcstop(struct dev *);
void dev_loc(struct dev *, unsigned);
#endif /* !define(DEV_H) */
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