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sequencervar.h revision 1.9 
      1 /*	$NetBSD: sequencervar.h,v 1.9 2005/05/29 22:18:25 christos 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 (at) 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 #include <sys/callout.h>
     40 
     41 struct midi_softc;
     42 
     43 struct syn_timer {
     44 	struct	timeval start, stop;
     45 	int	tempo, timebase;
     46 	u_long	last;
     47 	u_long	tick;
     48 	int	running;
     49 };
     50 
     51 #define SEQ_MAXQ 256
     52 struct sequencer_queue {
     53 	seq_event_rec buf[SEQ_MAXQ];
     54 	u_int	in;		/* input index in buf */
     55 	u_int	out;		/* output index in buf */
     56 	u_int	count;		/* filled slots in buf */
     57 };
     58 #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
     59 #define SEQ_QEMPTY(q) ((q)->count == 0)
     60 #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
     61 #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
     62 #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
     63 #define SEQ_QLEN(q) ((q)->count)
     64 
     65 struct sequencer_softc;
     66 
     67 #define MAXCHAN 16
     68 struct midi_dev {
     69 	const char *name;
     70 	int	subtype;
     71 	int	capabilities;
     72 	int	nr_voices;
     73 	int	instr_bank_size;
     74 	int	unit;
     75 	u_char	last_cmd;
     76 	struct	sequencer_softc *seq;
     77 	struct	midi_softc *msc;
     78 };
     79 
     80 struct sequencer_softc {
     81 	struct	device dev;
     82 	struct	device *sc_dev;	/* Hardware device struct */
     83 	struct	callout sc_callout;
     84 	int	isopen;		/* Open indicator */
     85 	int	flags;		/* Open flags */
     86 	int	mode;
     87 #define SEQ_OLD 0
     88 #define SEQ_NEW 1
     89 	int	rchan, wchan;
     90 	int	pbus;
     91 	struct	selinfo wsel;	/* write selector */
     92 	struct	selinfo rsel;	/* read selector */
     93 	struct	proc *async;	/* process who wants audio SIGIO */
     94 
     95 	char	doingsysex;	/* doing a SEQ_SYSEX */
     96 
     97 	int	nmidi;		/* number of MIDI devices */
     98 	struct	midi_dev **devs;
     99 	struct	syn_timer timer;
    100 
    101 	struct	sequencer_queue outq; /* output event queue */
    102 	u_int	lowat;		/* output queue low water mark */
    103 	char	timeout;	/* timeout has been set */
    104 
    105 	struct	sequencer_queue inq; /* input event queue */
    106 	u_long	input_stamp;
    107 };
    108 
    109 void seq_event_intr(void *, seq_event_rec *);
    110 
    111 #define SEQUENCERUNIT(d) ((d) & 0x7f)
    112 #define SEQ_IS_OLD(d) ((d) & 0x80)
    113 
    114