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

     /*      $NetBSD: sequencervar.h,v 1.17 2014/12/22 07:02:22 mrg Exp $    */
     
     /*
      * Copyright (c) 1998, 2008 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.
     *
     * 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>
    #include <sys/vnode.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;
            char    doingsysex;     /* doing a SEQ_SYSEX */
            vnode_t *vp;
    };
    
    struct sequencer_softc {
            callout_t sc_callout;
            kmutex_t lock;
            kcondvar_t wchan;
            kcondvar_t rchan;
            kcondvar_t lchan;
            int     dvlock;
            int     dying;
            u_int   isopen;         /* Open indicator */
            int     flags;          /* Open flags */
            int     mode;
    #define SEQ_OLD 0
    #define SEQ_NEW 1
            int     pbus;
            struct selinfo wsel;    /* write selector */
            struct selinfo rsel;    /* read selector */
            pid_t   async;  /* process who wants audio SIGIO */
            void    *sih;
            pcq_t   *pcq;
    
            int     nmidi;          /* number of MIDI devices */
            int     ndevs;
            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;
           int     sc_unit;
           LIST_ENTRY(sequencer_softc) sc_link;
   };
   
   void seq_event_intr(void *, seq_event_t *);
   
   #define SEQUENCERUNIT(d) ((d) & 0x7f)
   #define SEQ_IS_OLD(d) ((d) & 0x80)
   

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