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/midisynvar.h

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    1 /*      $NetBSD: midisynvar.h,v 1.7 2003/12/04 13:57:30 keihan 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_MIDISYNVAR_H_
   40 #define _SYS_DEV_MIDISYNVAR_H_
   41 
   42 typedef struct midisyn midisyn;
   43 
   44 struct midisyn_methods {
   45         int  (*open)    (midisyn *, int);
   46         void (*close)   (midisyn *);
   47         int  (*ioctl)   (midisyn *, u_long, caddr_t, int, struct proc *);
   48         int  (*allocv)  (midisyn *, u_int32_t, u_int32_t);
   49         void (*noteon)  (midisyn *, u_int32_t, u_int32_t, u_int32_t);
   50         void (*noteoff) (midisyn *, u_int32_t, u_int32_t, u_int32_t);
   51         void (*keypres) (midisyn *, u_int32_t, u_int32_t, u_int32_t);
   52         void (*ctlchg)  (midisyn *, u_int32_t, u_int32_t, u_int32_t);
   53         void (*pgmchg)  (midisyn *, u_int32_t, u_int32_t);
   54         void (*chnpres) (midisyn *, u_int32_t, u_int32_t);
   55         void (*pitchb)  (midisyn *, u_int32_t, u_int32_t, u_int32_t);
   56         void (*sysex)   (midisyn *, u_int32_t);
   57 };
   58 
   59 struct voice {
   60         u_int chan_note;        /* channel and note */
   61 #define MS_CHANNOTE(chan, note) ((chan) * 256 + (note))
   62 #define MS_GETCHAN(v) ((v)->chan_note >> 8)
   63         u_int seqno;            /* allocation index (increases with time) */
   64         u_char inuse;
   65 };
   66 
   67 #define MIDI_MAX_CHANS 16
   68 
   69 struct midisyn {
   70         /* Filled by synth driver */
   71         struct midisyn_methods *mets;
   72         char name[32];
   73         int nvoice;
   74         int flags;
   75 #define MS_DOALLOC      1
   76 #define MS_FREQXLATE    2
   77         void *data;
   78 
   79         /* Used by midisyn driver */
   80         u_int8_t buf[3];
   81         int pos;
   82         struct voice *voices;
   83         u_int seqno;
   84         u_int16_t pgms[MIDI_MAX_CHANS];
   85 };
   86 
   87 #define MS_GETPGM(ms, vno) ((ms)->pgms[MS_GETCHAN(&(ms)->voices[vno])])
   88 
   89 struct midi_softc;
   90 
   91 extern struct midi_hw_if midisyn_hw_if;
   92 
   93 void    midisyn_attach (struct midi_softc *, midisyn *);
   94 
   95 #define MIDISYN_FREQ_TO_HZ(f) ((f) >> 16)
   96 
   97 #endif /* _SYS_DEV_MIDISYNVAR_H_ */

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