1 /* $NetBSD: sequencervar.h,v 1.5 1998/11/25 22:17:07 augustss 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 struct midi_softc; 40 41 struct syn_timer { 42 struct timeval start, stop; 43 int tempo, timebase; 44 u_long last; 45 u_long tick; 46 int running; 47 }; 48 49 #define SEQ_MAXQ 256 50 struct sequencer_queue { 51 seq_event_rec buf[SEQ_MAXQ]; 52 u_int in; /* input index in buf */ 53 u_int out; /* output index in buf */ 54 u_int count; /* filled slots in buf */ 55 }; 56 #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0) 57 #define SEQ_QEMPTY(q) ((q)->count == 0) 58 #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ) 59 #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++) 60 #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--) 61 #define SEQ_QLEN(q) ((q)->count) 62 63 struct sequencer_softc; 64 65 #define MAXCHAN 16 66 struct midi_dev { 67 char *name; 68 int subtype; 69 int capabilities; 70 int nr_voices; 71 int instr_bank_size; 72 int unit; 73 u_char last_cmd; 74 struct sequencer_softc *seq; 75 struct midi_softc *msc; 76 }; 77 78 struct sequencer_softc { 79 struct device dev; 80 struct device *sc_dev; /* Hardware device struct */ 81 int isopen; /* Open indicator */ 82 int flags; /* Open flags */ 83 int mode; 84 #define SEQ_OLD 0 85 #define SEQ_NEW 1 86 int rchan, wchan; 87 int pbus; 88 struct selinfo wsel; /* write selector */ 89 struct selinfo rsel; /* read selector */ 90 struct proc *async; /* process who wants audio SIGIO */ 91 92 char doingsysex; /* doing a SEQ_SYSEX */ 93 94 int nmidi; /* number of MIDI devices */ 95 struct midi_dev **devs; 96 struct syn_timer timer; 97 98 struct sequencer_queue outq; /* output event queue */ 99 u_int lowat; /* output queue low water mark */ 100 char timeout; /* timeout has been set */ 101 102 struct sequencer_queue inq; /* input event queue */ 103 u_long input_stamp; 104 }; 105 106 void seq_event_intr __P((void *, seq_event_rec *)); 107 108 #define SEQUENCERUNIT(d) ((d) & 0x7f) 109 #define SEQ_IS_OLD(d) ((d) & 0x80) 110 111