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midivar.h revision 1.6 
      1 /*	$NetBSD: midivar.h,v 1.6 1998/11/25 22:17:07 augustss 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 (at) 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 struct midi_buffer {
     47 	u_char	*inp;
     48 	u_char	*outp;
     49 	u_char	*end;
     50 	int	used;
     51 	int	usedhigh;
     52 	u_char	start[MIDI_BUFSIZE];
     53 };
     54 
     55 #define MIDI_MAX_WRITE 32	/* max bytes written with busy wait */
     56 #define MIDI_WAIT 10000		/* microseconds to wait after busy wait */
     57 
     58 struct midi_softc {
     59 	struct	device dev;
     60 	void	*hw_hdl;	/* Hardware driver handle */
     61 	struct	midi_hw_if *hw_if; /* Hardware interface */
     62 	struct	device *sc_dev;	/* Hardware device struct */
     63 	int	isopen;		/* Open indicator */
     64 	int	flags;		/* Open flags */
     65 	struct	midi_buffer outbuf;
     66 	struct	midi_buffer inbuf;
     67 	int	props;
     68 	int	rchan, wchan;
     69 	int	pbus;
     70 	struct	selinfo wsel;	/* write selector */
     71 	struct	selinfo rsel;	/* read selector */
     72 	struct	proc *async;	/* process who wants audio SIGIO */
     73 
     74 	/* MIDI input state machine */
     75 	int	in_state;
     76 #define MIDI_IN_START 0
     77 #define MIDI_IN_DATA 1
     78 #define MIDI_IN_SYSEX 2
     79 	u_char	in_msg[3];
     80 	u_char	in_status;
     81 	u_int	in_left;
     82 	u_int	in_pos;
     83 
     84 #if NSEQUENCER > 0
     85 	/* Synthesizer emulation stuff */
     86 	int	seqopen;
     87 	struct	midi_dev *seq_md; /* structure that links us with the seq. */
     88 #endif
     89 };
     90 
     91 #define MIDIUNIT(d) ((d) & 0xff)
     92 
     93 #endif /* _SYS_DEV_MIDIVAR_H_ */
     94