fc96443d15
timeout()/untimeout() API: - Clients supply callout handle storage, thus eliminating problems of resource allocation. - Insertion and removal of callouts is constant time, important as this facility is used quite a lot in the kernel. The old timeout()/untimeout() API has been removed from the kernel.
114 lines
3.8 KiB
C
114 lines
3.8 KiB
C
/* $NetBSD: sequencervar.h,v 1.6 2000/03/23 07:01:27 thorpej Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (augustss@netbsd.org).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/callout.h>
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struct midi_softc;
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struct syn_timer {
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struct timeval start, stop;
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int tempo, timebase;
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u_long last;
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u_long tick;
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int running;
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};
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#define SEQ_MAXQ 256
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struct sequencer_queue {
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seq_event_rec buf[SEQ_MAXQ];
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u_int in; /* input index in buf */
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u_int out; /* output index in buf */
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u_int count; /* filled slots in buf */
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};
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#define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
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#define SEQ_QEMPTY(q) ((q)->count == 0)
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#define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
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#define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
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#define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
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#define SEQ_QLEN(q) ((q)->count)
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struct sequencer_softc;
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#define MAXCHAN 16
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struct midi_dev {
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char *name;
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int subtype;
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int capabilities;
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int nr_voices;
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int instr_bank_size;
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int unit;
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u_char last_cmd;
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struct sequencer_softc *seq;
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struct midi_softc *msc;
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};
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struct sequencer_softc {
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struct device dev;
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struct device *sc_dev; /* Hardware device struct */
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struct callout sc_callout;
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int isopen; /* Open indicator */
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int flags; /* Open flags */
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int mode;
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#define SEQ_OLD 0
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#define SEQ_NEW 1
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int rchan, wchan;
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int pbus;
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struct selinfo wsel; /* write selector */
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struct selinfo rsel; /* read selector */
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struct proc *async; /* process who wants audio SIGIO */
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char doingsysex; /* doing a SEQ_SYSEX */
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int nmidi; /* number of MIDI devices */
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struct midi_dev **devs;
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struct syn_timer timer;
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struct sequencer_queue outq; /* output event queue */
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u_int lowat; /* output queue low water mark */
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char timeout; /* timeout has been set */
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struct sequencer_queue inq; /* input event queue */
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u_long input_stamp;
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};
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void seq_event_intr __P((void *, seq_event_rec *));
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#define SEQUENCERUNIT(d) ((d) & 0x7f)
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#define SEQ_IS_OLD(d) ((d) & 0x80)
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