1/* $NetBSD: sequencervar.h,v 1.17 2014/12/22 07:02:22 mrg Exp $ */
2
3/*
4 * Copyright (c) 1998, 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (augustss@NetBSD.org).
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/callout.h>
33#include <sys/vnode.h>
34
35struct midi_softc;
36
37struct syn_timer {
38 struct timeval reftime, stoptime;
39 uint16_t tempo_beatpermin, timebase_divperbeat;
40 uint32_t usperdiv;
41 uint32_t divs_lastevent;
42 uint32_t divs_lastchange;
43 int running;
44};
45
46#define SEQ_MAXQ 256
47struct sequencer_queue {
48 seq_event_t buf[SEQ_MAXQ];
49 u_int in; /* input index in buf */
50 u_int out; /* output index in buf */
51 u_int count; /* filled slots in buf */
52};
53#define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
54#define SEQ_QEMPTY(q) ((q)->count == 0)
55#define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
56#define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
57#define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
58#define SEQ_QLEN(q) ((q)->count)
59
60struct sequencer_softc;
61
62#define MAXCHAN 16
63struct midi_dev {
64 const char *name;
65 int subtype;
66 int capabilities;
67 int nr_voices;
68 int instr_bank_size;
69 int unit;
70 struct sequencer_softc *seq;
71 char doingsysex; /* doing a SEQ_SYSEX */
72 vnode_t *vp;
73};
74
75struct sequencer_softc {
76 callout_t sc_callout;
77 kmutex_t lock;
78 kcondvar_t wchan;
79 kcondvar_t rchan;
80 kcondvar_t lchan;
81 int dvlock;
82 int dying;
83 u_int isopen; /* Open indicator */
84 int flags; /* Open flags */
85 int mode;
86#define SEQ_OLD 0
87#define SEQ_NEW 1
88 int pbus;
89 struct selinfo wsel; /* write selector */
90 struct selinfo rsel; /* read selector */
91 pid_t async; /* process who wants audio SIGIO */
92 void *sih;
93 pcq_t *pcq;
94
95 int nmidi; /* number of MIDI devices */
96 int ndevs;
97 struct midi_dev **devs;
98 struct syn_timer timer;
99
100 struct sequencer_queue outq; /* output event queue */
101 u_int lowat; /* output queue low water mark */
102 char timeout; /* timeout has been set */
103
104 struct sequencer_queue inq; /* input event queue */
105 u_long input_stamp;
106 int sc_unit;
107 LIST_ENTRY(sequencer_softc) sc_link;
108};
109
110void seq_event_intr(void *, seq_event_t *);
111
112#define SEQUENCERUNIT(d) ((d) & 0x7f)
113#define SEQ_IS_OLD(d) ((d) & 0x80)
114
115