FreeBSD/Linux Kernel Cross Reference
sys/dev/midivar.h
1 /* $NetBSD: midivar.h,v 1.10 2004/10/29 12:57:16 yamt 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 * 3. All advertising materials mentioning features or use of this software
19 * must display the following acknowledgement:
20 * This product includes software developed by the NetBSD
21 * Foundation, Inc. and its contributors.
22 * 4. Neither the name of The NetBSD Foundation nor the names of its
23 * contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36 * POSSIBILITY OF SUCH DAMAGE.
37 */
38
39 #ifndef _SYS_DEV_MIDIVAR_H_
40 #define _SYS_DEV_MIDIVAR_H_
41
42 #define MIDI_BUFSIZE 1024
43
44 #include "sequencer.h"
45
46 #include <sys/callout.h>
47
48 struct midi_buffer {
49 u_char *inp;
50 u_char *outp;
51 u_char *end;
52 int used;
53 int usedhigh;
54 u_char start[MIDI_BUFSIZE];
55 };
56
57 #define MIDI_MAX_WRITE 32 /* max bytes written with busy wait */
58 #define MIDI_WAIT 10000 /* microseconds to wait after busy wait */
59
60 struct midi_softc {
61 struct device dev;
62 void *hw_hdl; /* Hardware driver handle */
63 const struct midi_hw_if *hw_if; /* Hardware interface */
64 struct device *sc_dev; /* Hardware device struct */
65 int isopen; /* Open indicator */
66 int flags; /* Open flags */
67 int dying;
68 struct midi_buffer outbuf;
69 struct midi_buffer inbuf;
70 int props;
71 int rchan, wchan;
72 int pbus;
73 struct selinfo wsel; /* write selector */
74 struct selinfo rsel; /* read selector */
75 struct proc *async; /* process who wants audio SIGIO */
76
77 struct callout sc_callout;
78
79 /* MIDI input state machine */
80 int in_state;
81 #define MIDI_IN_START 0
82 #define MIDI_IN_DATA 1
83 #define MIDI_IN_SYSEX 2
84 u_char in_msg[3];
85 u_char in_status;
86 u_int in_left;
87 u_int in_pos;
88
89 #if NSEQUENCER > 0
90 /* Synthesizer emulation stuff */
91 int seqopen;
92 struct midi_dev *seq_md; /* structure that links us with the seq. */
93 #endif
94 };
95
96 #define MIDIUNIT(d) ((d) & 0xff)
97
98 #endif /* _SYS_DEV_MIDIVAR_H_ */
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