/* $NetBSD: sequencervar.h,v 1.17 2014/12/22 07:02:22 mrg Exp $ */

/* $NetBSD: sequencervar.h,v 1.17 2014/12/22 07:02:22 mrg Exp $ */

/*
* Copyright (c) 1998, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson ([email protected]).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/callout.h>
#include <sys/vnode.h>

struct midi_softc;

struct syn_timer {
struct timeval reftime, stoptime;
uint16_t tempo_beatpermin, timebase_divperbeat;
uint32_t usperdiv;
uint32_t divs_lastevent;
uint32_t divs_lastchange;
int running;
};

#define SEQ_MAXQ 256
struct sequencer_queue {
seq_event_t buf[SEQ_MAXQ];
u_int in; /* input index in buf */
u_int out; /* output index in buf */
u_int count; /* filled slots in buf */
};
#define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
#define SEQ_QEMPTY(q) ((q)->count == 0)
#define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
#define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
#define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
#define SEQ_QLEN(q) ((q)->count)

struct sequencer_softc;

#define MAXCHAN 16
struct midi_dev {
const char *name;
int subtype;
int capabilities;
int nr_voices;
int instr_bank_size;
int unit;
struct sequencer_softc *seq;
char doingsysex; /* doing a SEQ_SYSEX */
vnode_t *vp;
};

struct sequencer_softc {
callout_t sc_callout;
kmutex_t lock;
kcondvar_t wchan;
kcondvar_t rchan;
kcondvar_t lchan;
int dvlock;
int dying;
u_int isopen; /* Open indicator */
int flags; /* Open flags */
int mode;
#define SEQ_OLD 0
#define SEQ_NEW 1
int pbus;
struct selinfo wsel; /* write selector */
struct selinfo rsel; /* read selector */
pid_t async; /* process who wants audio SIGIO */
void *sih;
pcq_t *pcq;

int nmidi; /* number of MIDI devices */
int ndevs;
struct midi_dev **devs;
struct syn_timer timer;

struct sequencer_queue outq; /* output event queue */
u_int lowat; /* output queue low water mark */
char timeout; /* timeout has been set */

struct sequencer_queue inq; /* input event queue */
u_long input_stamp;
int sc_unit;
LIST_ENTRY(sequencer_softc) sc_link;
};

void seq_event_intr(void *, seq_event_t *);

#define SEQUENCERUNIT(d) ((d) & 0x7f)
#define SEQ_IS_OLD(d) ((d) & 0x80)