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midisynvar.h revision 1.2 
      1 /*	$NetBSD: midisynvar.h,v 1.2 1998/08/17 21:16:12 augustss Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * Author: Lennart Augustsson
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *        This product includes software developed by the NetBSD
     20  *        Foundation, Inc. and its contributors.
     21  * 4. Neither the name of The NetBSD Foundation nor the names of its
     22  *    contributors may be used to endorse or promote products derived
     23  *    from this software without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     26  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _SYS_DEV_MIDISYNVAR_H_
     39 #define _SYS_DEV_MIDISYNVAR_H_
     40 
     41 typedef struct midisyn midisyn;
     42 
     43 struct midisyn_methods {
     44 	int  (*open)	__P((midisyn *, int));
     45 	void (*close)   __P((midisyn *));
     46 	int  (*ioctl)   __P((midisyn *, u_long, caddr_t, int, struct proc *));
     47 	int  (*allocv)  __P((midisyn *, u_int32_t, u_int32_t));
     48 	void (*noteon)  __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
     49 	void (*noteoff) __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
     50 	void (*keypres) __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
     51 	void (*ctlchg)  __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
     52 	void (*pgmchg)  __P((midisyn *, u_int32_t, u_int32_t));
     53 	void (*chnpres) __P((midisyn *, u_int32_t, u_int32_t));
     54 	void (*pitchb)  __P((midisyn *, u_int32_t, u_int32_t, u_int32_t));
     55 	void (*sysex)   __P((midisyn *, u_int32_t));
     56 };
     57 
     58 struct voice {
     59 	u_int chan_note;	/* channel and note */
     60 #define MS_CHANNOTE(chan, note) ((chan) * 256 + (note))
     61 #define MS_GETCHAN(v) ((v)->chan_note >> 8)
     62 	u_int seqno;		/* allocation index (increases with time) */
     63 	u_char inuse;
     64 };
     65 
     66 #define MIDI_MAX_CHANS 16
     67 
     68 struct midisyn {
     69 	/* Filled by synth driver */
     70 	struct midisyn_methods *mets;
     71 	char name[32];
     72 	int nvoice;
     73 	int flags;
     74 #define MS_DOALLOC	1
     75 #define MS_FREQXLATE	2
     76 	void *data;
     77 
     78 	/* Used by midisyn driver */
     79 	u_int8_t buf[3];
     80 	int pos;
     81 	struct voice *voices;
     82 	u_int seqno;
     83 	u_int16_t pgms[MIDI_MAX_CHANS];
     84 };
     85 
     86 #define MS_GETPGM(ms, vno) ((ms)->pgms[MS_GETCHAN(&(ms)->voices[vno])])
     87 
     88 struct midi_softc;
     89 
     90 extern struct midi_hw_if midisyn_hw_if;
     91 
     92 void	midisyn_attach __P((struct midi_softc *, midisyn *));
     93 
     94 #define MIDISYN_FREQ_TO_HZ(f) ((f) >> 16)
     95 
     96 #endif /* _SYS_DEV_MIDISYNVAR_H_ */
     97