FreeBSD/Linux Kernel Cross Reference
sys/dev/sequencervar.h

     /*      $NetBSD: sequencervar.h,v 1.11 2006/06/30 13:56:25 chap Exp $   */
     
     /*
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Lennart Augustsson (augustss@NetBSD.org).
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    #include <sys/callout.h>
    
    struct midi_softc;
    
    struct syn_timer {
            struct  timeval reftime, stoptime;
            uint16_t        tempo_beatpermin, timebase_divperbeat;
            uint32_t        usperdiv;
            uint32_t        divs_lastevent;
            uint32_t        divs_lastchange;
            int             running;
    };
    
    #define SEQ_MAXQ 256
    struct sequencer_queue {
            seq_event_t buf[SEQ_MAXQ];
            u_int   in;             /* input index in buf */
            u_int   out;            /* output index in buf */
            u_int   count;          /* filled slots in buf */
    };
    #define SEQ_QINIT(q) ((q)->in = (q)->out = (q)->count = 0)
    #define SEQ_QEMPTY(q) ((q)->count == 0)
    #define SEQ_QFULL(q) ((q)->count >= SEQ_MAXQ)
    #define SEQ_QPUT(q, e) ((q)->buf[(q)->in++] = (e), (q)->in %= SEQ_MAXQ, (q)->count++)
    #define SEQ_QGET(q, e) ((e) = (q)->buf[(q)->out++], (q)->out %= SEQ_MAXQ, (q)->count--)
    #define SEQ_QLEN(q) ((q)->count)
    
    struct sequencer_softc;
    
    #define MAXCHAN 16
    struct midi_dev {
            const char *name;
            int     subtype;
            int     capabilities;
            int     nr_voices;
            int     instr_bank_size;
            int     unit;
            struct  sequencer_softc *seq;
            struct  midi_softc *msc;
            char    doingsysex;     /* doing a SEQ_SYSEX */
    };
    
    struct sequencer_softc {
            struct  device dev;
            struct  device *sc_dev; /* Hardware device struct */
            struct  callout sc_callout;
            int     isopen;         /* Open indicator */
            int     flags;          /* Open flags */
            int     mode;
    #define SEQ_OLD 0
    #define SEQ_NEW 1
            int     rchan, wchan;
            int     pbus;
            struct  selinfo wsel;   /* write selector */
            struct  selinfo rsel;   /* read selector */
            struct  proc *async;    /* process who wants audio SIGIO */
    
            int     nmidi;          /* number of MIDI devices */
            struct  midi_dev **devs;
            struct  syn_timer timer;
    
           struct  sequencer_queue outq; /* output event queue */
           u_int   lowat;          /* output queue low water mark */
           char    timeout;        /* timeout has been set */
   
           struct  sequencer_queue inq; /* input event queue */
           u_long  input_stamp;
   };
   
   void seq_event_intr(void *, seq_event_t *);
   
   #define SEQUENCERUNIT(d) ((d) & 0x7f)
   #define SEQ_IS_OLD(d) ((d) & 0x80)
   

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