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midivar.h revision 1.3 
      1 /*	$NetBSD: midivar.h,v 1.3 1998/08/12 21:29:29 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 #define MIDI_BUFSIZE 1024
     39 
     40 #include "sequencer.h"
     41 
     42 struct midi_buffer {
     43 	u_char	*inp;
     44 	u_char	*outp;
     45 	u_char	*end;
     46 	int	used;
     47 	int	usedhigh;
     48 	u_char	start[MIDI_BUFSIZE];
     49 };
     50 
     51 #define MIDI_MAX_WRITE 32	/* max bytes written with busy wait */
     52 #define MIDI_WAIT 10000		/* microseconds to wait after busy wait */
     53 
     54 struct midi_softc {
     55 	struct	device dev;
     56 	void	*hw_hdl;	/* Hardware driver handle */
     57 	struct	midi_hw_if *hw_if; /* Hardware interface */
     58 	struct	device *sc_dev;	/* Hardware device struct */
     59 	int	isopen;		/* Open indicator */
     60 	int	flags;		/* Open flags */
     61 	struct	midi_buffer outbuf;
     62 	struct	midi_buffer inbuf;
     63 	int	props;
     64 	int	rchan, wchan;
     65 	int	pbus;
     66 	struct	selinfo wsel;	/* write selector */
     67 	struct	selinfo rsel;	/* read selector */
     68 	struct	proc *async;	/* process who wants audio SIGIO */
     69 
     70 	/* MIDI input state machine */
     71 	int	in_state;
     72 #define MIDI_IN_START 0
     73 #define MIDI_IN_DATA 1
     74 #define MIDI_IN_SYSEX 2
     75 	u_char	in_msg[3];
     76 	u_char	in_status;
     77 	u_int	in_left;
     78 	u_int	in_pos;
     79 
     80 #if NSEQUENCER > 0
     81 	/* Synthesizer emulation stuff */
     82 	int	seqopen;
     83 #endif
     84 };
     85 
     86 #define MIDIUNIT(d) ((d) & 0xff)
     87 
     88 int	midi_unit_count __P((void));
     89 void	midi_getinfo __P((dev_t, struct midi_info *));
     90 void	midi_attach __P((struct midi_softc *, struct device *));
     91