The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: midivar.h,v 1.10 2004/10/29 12:57:16 yamt 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  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #ifndef _SYS_DEV_MIDIVAR_H_
   40 #define _SYS_DEV_MIDIVAR_H_
   41 
   42 #define MIDI_BUFSIZE 1024
   43 
   44 #include "sequencer.h"
   45 
   46 #include <sys/callout.h>
   47 
   48 struct midi_buffer {
   49         u_char  *inp;
   50         u_char  *outp;
   51         u_char  *end;
   52         int     used;
   53         int     usedhigh;
   54         u_char  start[MIDI_BUFSIZE];
   55 };
   56 
   57 #define MIDI_MAX_WRITE 32       /* max bytes written with busy wait */
   58 #define MIDI_WAIT 10000         /* microseconds to wait after busy wait */
   59 
   60 struct midi_softc {
   61         struct  device dev;
   62         void    *hw_hdl;        /* Hardware driver handle */
   63         const struct midi_hw_if *hw_if; /* Hardware interface */
   64         struct  device *sc_dev; /* Hardware device struct */
   65         int     isopen;         /* Open indicator */
   66         int     flags;          /* Open flags */
   67         int     dying;
   68         struct  midi_buffer outbuf;
   69         struct  midi_buffer inbuf;
   70         int     props;
   71         int     rchan, wchan;
   72         int     pbus;
   73         struct  selinfo wsel;   /* write selector */
   74         struct  selinfo rsel;   /* read selector */
   75         struct  proc *async;    /* process who wants audio SIGIO */
   76 
   77         struct callout sc_callout;
   78 
   79         /* MIDI input state machine */
   80         int     in_state;
   81 #define MIDI_IN_START 0
   82 #define MIDI_IN_DATA 1
   83 #define MIDI_IN_SYSEX 2
   84         u_char  in_msg[3];
   85         u_char  in_status;
   86         u_int   in_left;
   87         u_int   in_pos;
   88 
   89 #if NSEQUENCER > 0
   90         /* Synthesizer emulation stuff */
   91         int     seqopen;
   92         struct  midi_dev *seq_md; /* structure that links us with the seq. */
   93 #endif
   94 };
   95 
   96 #define MIDIUNIT(d) ((d) & 0xff)
   97 
   98 #endif /* _SYS_DEV_MIDIVAR_H_ */

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