sys/dev/sequencervar.h

   1 /*      $NetBSD: sequencervar.h,v 1.12 2007/02/09 21:55:26 ad 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  *
  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
  34 struct midi_softc;
  35
  36 struct syn_timer {
  37         struct  timeval reftime, stoptime;
  38         uint16_t        tempo_beatpermin, timebase_divperbeat;
  39         uint32_t        usperdiv;
  40         uint32_t        divs_lastevent;
  41         uint32_t        divs_lastchange;
  42         int             running;
  43 };
  44
  45 #define SEQ_MAXQ 256
  46 struct sequencer_queue {
  47         seq_event_t buf[SEQ_MAXQ];
  48         u_int   in;             /* input index in buf */
  49         u_int   out;            /* output index in buf */
  50         u_int   count;          /* filled slots in buf */
  51 };
  52 #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
  53 #define SEQ_QEMPTY(q) ((q)->count == 0)
  54 #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
  55 #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
  56 #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
  57 #define SEQ_QLEN(q) ((q)->count)
  58
  59 struct sequencer_softc;
  60
  61 #define MAXCHAN 16
  62 struct midi_dev {
  63         const char *name;
  64         int     subtype;
  65         int     capabilities;
  66         int     nr_voices;
  67         int     instr_bank_size;
  68         int     unit;
  69         struct  sequencer_softc *seq;
  70         struct  midi_softc *msc;
  71         char    doingsysex;     /* doing a SEQ_SYSEX */
  72 };
  73
  74 struct sequencer_softc {
  75         struct  device dev;
  76         struct  device *sc_dev; /* Hardware device struct */
  77         struct  callout sc_callout;
  78         int     isopen;         /* Open indicator */
  79         int     flags;          /* Open flags */
  80         int     mode;
  81 #define SEQ_OLD 0
  82 #define SEQ_NEW 1
  83         int     rchan, wchan;
  84         int     pbus;
  85         struct  selinfo wsel;   /* write selector */
  86         struct  selinfo rsel;   /* read selector */
  87         struct  proc *async;    /* process who wants audio SIGIO */
  88         void    *sih;
  89
  90         int     nmidi;          /* number of MIDI devices */
  91         struct  midi_dev **devs;
  92         struct  syn_timer timer;
  93
  94         struct  sequencer_queue outq; /* output event queue */
  95         u_int   lowat;          /* output queue low water mark */
  96         char    timeout;        /* timeout has been set */
  97
  98         struct  sequencer_queue inq; /* input event queue */
  99         u_long  input_stamp;
 100 };
 101
 102 void seq_event_intr(void *, seq_event_t *);
 103
 104 #define SEQUENCERUNIT(d) ((d) & 0x7f)
 105 #define SEQ_IS_OLD(d) ((d) & 0x80)
 106