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Annotation of sys/dev/sequencervar.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: sequencervar.h,v 1.3 2002/03/14 01:26:52 millert Exp $        */
                      2: /*     $NetBSD: sequencervar.h,v 1.5 1998/11/25 22:17:07 augustss Exp $        */
                      3:
                      4: /*
                      5:  * Copyright (c) 1998 The NetBSD Foundation, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to The NetBSD Foundation
                      9:  * by Lennart Augustsson (augustss@netbsd.org).
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *        This product includes software developed by the NetBSD
                     22:  *        Foundation, Inc. and its contributors.
                     23:  * 4. Neither the name of The NetBSD Foundation nor the names of its
                     24:  *    contributors may be used to endorse or promote products derived
                     25:  *    from this software without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     28:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     29:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     30:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     31:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     32:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     33:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     34:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     35:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     36:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     37:  * POSSIBILITY OF SUCH DAMAGE.
                     38:  */
                     39:
                     40: struct midi_softc;
                     41:
                     42: struct syn_timer {
                     43:        struct  timeval start, stop;
                     44:        int     tempo, timebase;
                     45:        u_long  last;
                     46:        u_long  tick;
                     47:        int     running;
                     48: };
                     49:
                     50: #define SEQ_MAXQ 256
                     51: struct sequencer_queue {
                     52:        seq_event_rec buf[SEQ_MAXQ];
                     53:        u_int   in;             /* input index in buf */
                     54:        u_int   out;            /* output index in buf */
                     55:        u_int   count;          /* filled slots in buf */
                     56: };
                     57: #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
                     58: #define SEQ_QEMPTY(q) ((q)->count == 0)
                     59: #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
                     60: #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
                     61: #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
                     62: #define SEQ_QLEN(q) ((q)->count)
                     63:
                     64: struct sequencer_softc;
                     65:
                     66: #define MAXCHAN 16
                     67: struct midi_dev {
                     68:        char    *name;
                     69:        int     subtype;
                     70:        int     capabilities;
                     71:        int     nr_voices;
                     72:        int     instr_bank_size;
                     73:        int     unit;
                     74:        u_char  last_cmd;
                     75:        struct  sequencer_softc *seq;
                     76:        struct  midi_softc *msc;
                     77: };
                     78:
                     79: struct sequencer_softc {
                     80:        struct  device dev;
                     81:        struct  device *sc_dev; /* Hardware device struct */
                     82:        int     isopen;         /* Open indicator */
                     83:        int     flags;          /* Open flags */
                     84:        int     mode;
                     85: #define SEQ_OLD 0
                     86: #define SEQ_NEW 1
                     87:        int     rchan, wchan;
                     88:        int     pbus;
                     89:        struct  selinfo wsel;   /* write selector */
                     90:        struct  selinfo rsel;   /* read selector */
                     91:        struct  proc *async;    /* process who wants audio SIGIO */
                     92:        struct  timeout timo;   /* timeout handle */
                     93:
                     94:        char    doingsysex;     /* doing a SEQ_SYSEX */
                     95:
                     96:        int     nmidi;          /* number of MIDI devices */
                     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: };
                    107:
                    108: void seq_event_intr(void *, seq_event_rec *);
                    109:
                    110: #define SEQUENCERUNIT(d) ((d) & 0x7f)
                    111: #define SEQ_IS_OLD(d) ((d) & 0x80)
                    112: