| 1 | /* $NetBSD: sequencervar.h,v 1.17 2014/12/22 07:02:22 mrg Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1998, 2008 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 | #include <sys/vnode.h> |
| 34 | |
| 35 | struct midi_softc; |
| 36 | |
| 37 | struct syn_timer { |
| 38 | struct timeval reftime, stoptime; |
| 39 | uint16_t tempo_beatpermin, timebase_divperbeat; |
| 40 | uint32_t usperdiv; |
| 41 | uint32_t divs_lastevent; |
| 42 | uint32_t divs_lastchange; |
| 43 | int running; |
| 44 | }; |
| 45 | |
| 46 | #define SEQ_MAXQ 256 |
| 47 | struct sequencer_queue { |
| 48 | seq_event_t buf[SEQ_MAXQ]; |
| 49 | u_int in; /* input index in buf */ |
| 50 | u_int out; /* output index in buf */ |
| 51 | u_int count; /* filled slots in buf */ |
| 52 | }; |
| 53 | #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0) |
| 54 | #define SEQ_QEMPTY(q) ((q)->count == 0) |
| 55 | #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ) |
| 56 | #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++) |
| 57 | #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--) |
| 58 | #define SEQ_QLEN(q) ((q)->count) |
| 59 | |
| 60 | struct sequencer_softc; |
| 61 | |
| 62 | #define MAXCHAN 16 |
| 63 | struct midi_dev { |
| 64 | const char *name; |
| 65 | int subtype; |
| 66 | int capabilities; |
| 67 | int nr_voices; |
| 68 | int instr_bank_size; |
| 69 | int unit; |
| 70 | struct sequencer_softc *seq; |
| 71 | char doingsysex; /* doing a SEQ_SYSEX */ |
| 72 | vnode_t *vp; |
| 73 | }; |
| 74 | |
| 75 | struct sequencer_softc { |
| 76 | callout_t sc_callout; |
| 77 | kmutex_t lock; |
| 78 | kcondvar_t wchan; |
| 79 | kcondvar_t rchan; |
| 80 | kcondvar_t lchan; |
| 81 | int dvlock; |
| 82 | int dying; |
| 83 | u_int isopen; /* Open indicator */ |
| 84 | int flags; /* Open flags */ |
| 85 | int mode; |
| 86 | #define SEQ_OLD 0 |
| 87 | #define SEQ_NEW 1 |
| 88 | int pbus; |
| 89 | struct selinfo wsel; /* write selector */ |
| 90 | struct selinfo rsel; /* read selector */ |
| 91 | pid_t async; /* process who wants audio SIGIO */ |
| 92 | void *sih; |
| 93 | pcq_t *pcq; |
| 94 | |
| 95 | int nmidi; /* number of MIDI devices */ |
| 96 | int ndevs; |
| 97 | struct midi_dev **devs; |
| 98 | struct syn_timer timer; |
| 99 | |
| 100 | struct sequencer_queue outq; /* output event queue */ |
| 101 | u_int lowat; /* output queue low water mark */ |
| 102 | char timeout; /* timeout has been set */ |
| 103 | |
| 104 | struct sequencer_queue inq; /* input event queue */ |
| 105 | u_long input_stamp; |
| 106 | int sc_unit; |
| 107 | LIST_ENTRY(sequencer_softc) sc_link; |
| 108 | }; |
| 109 | |
| 110 | void seq_event_intr(void *, seq_event_t *); |
| 111 | |
| 112 | #define SEQUENCERUNIT(d) ((d) & 0x7f) |
| 113 | #define SEQ_IS_OLD(d) ((d) & 0x80) |
| 114 | |
| 115 | |