1 /* $NetBSD: sequencervar.h,v 1.13 2008/04/28 20:23:47 martin Exp $ */
2
3 /*
4 * Copyright (c) 1998 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
34 struct midi_softc;
35
36 struct syn_timer {
37 struct timeval reftime, stoptime;
38 uint16_t tempo_beatpermin, timebase_divperbeat;
39 uint32_t usperdiv;
40 uint32_t divs_lastevent;
41 uint32_t divs_lastchange;
42 int running;
43 };
44
45 #define SEQ_MAXQ 256
46 struct sequencer_queue {
47 seq_event_t buf[SEQ_MAXQ];
48 u_int in; /* input index in buf */
49 u_int out; /* output index in buf */
50 u_int count; /* filled slots in buf */
51 };
52 #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
53 #define SEQ_QEMPTY(q) ((q)->count == 0)
54 #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
55 #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
56 #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
57 #define SEQ_QLEN(q) ((q)->count)
58
59 struct sequencer_softc;
60
61 #define MAXCHAN 16
62 struct midi_dev {
63 const char *name;
64 int subtype;
65 int capabilities;
66 int nr_voices;
67 int instr_bank_size;
68 int unit;
69 struct sequencer_softc *seq;
70 struct midi_softc *msc;
71 char doingsysex; /* doing a SEQ_SYSEX */
72 };
73
74 struct sequencer_softc {
75 struct device dev;
76 struct device *sc_dev; /* Hardware device struct */
77 struct callout sc_callout;
78 int isopen; /* Open indicator */
79 int flags; /* Open flags */
80 int mode;
81 #define SEQ_OLD 0
82 #define SEQ_NEW 1
83 int rchan, wchan;
84 int pbus;
85 struct selinfo wsel; /* write selector */
86 struct selinfo rsel; /* read selector */
87 struct proc *async; /* process who wants audio SIGIO */
88 void *sih;
89
90 int nmidi; /* number of MIDI devices */
91 struct midi_dev **devs;
92 struct syn_timer timer;
93
94 struct sequencer_queue outq; /* output event queue */
95 u_int lowat; /* output queue low water mark */
96 char timeout; /* timeout has been set */
97
98 struct sequencer_queue inq; /* input event queue */
99 u_long input_stamp;
100 };
101
102 void seq_event_intr(void *, seq_event_t *);
103
104 #define SEQUENCERUNIT(d) ((d) & 0x7f)
105 #define SEQ_IS_OLD(d) ((d) & 0x80)
106
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