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Annotation of sys/dev/midisynvar.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: midisynvar.h,v 1.2 2002/03/14 01:26:52 millert Exp $  */
                      2: /*     $NetBSD: midisynvar.h,v 1.3 1998/11/25 22:17:07 augustss Exp $  */
                      3:
                      4: /*
                      5:  * Copyright (c) 1998 The NetBSD Foundation, Inc.
                      6:  * All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to The NetBSD Foundation
                      9:  * by Lennart Augustsson (augustss@netbsd.org).
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *        This product includes software developed by the NetBSD
                     22:  *        Foundation, Inc. and its contributors.
                     23:  * 4. Neither the name of The NetBSD Foundation nor the names of its
                     24:  *    contributors may be used to endorse or promote products derived
                     25:  *    from this software without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
                     28:  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
                     29:  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
                     30:  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
                     31:  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
                     32:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
                     33:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
                     34:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
                     35:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
                     36:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
                     37:  * POSSIBILITY OF SUCH DAMAGE.
                     38:  */
                     39:
                     40: #ifndef _SYS_DEV_MIDISYNVAR_H_
                     41: #define _SYS_DEV_MIDISYNVAR_H_
                     42:
                     43: typedef struct midisyn midisyn;
                     44:
                     45: struct midisyn_methods {
                     46:        int  (*open)(midisyn *, int);
                     47:        void (*close)(midisyn *);
                     48:        int  (*ioctl)(midisyn *, u_long, caddr_t, int, struct proc *);
                     49:        int  (*allocv)(midisyn *, u_int32_t, u_int32_t);
                     50:        void (*noteon)(midisyn *, u_int32_t, u_int32_t, u_int32_t);
                     51:        void (*noteoff)(midisyn *, u_int32_t, u_int32_t, u_int32_t);
                     52:        void (*keypres)(midisyn *, u_int32_t, u_int32_t, u_int32_t);
                     53:        void (*ctlchg)(midisyn *, u_int32_t, u_int32_t, u_int32_t);
                     54:        void (*pgmchg)(midisyn *, u_int32_t, u_int32_t);
                     55:        void (*chnpres)(midisyn *, u_int32_t, u_int32_t);
                     56:        void (*pitchb)(midisyn *, u_int32_t, u_int32_t, u_int32_t);
                     57:        void (*sysex)(midisyn *, u_int32_t);
                     58: };
                     59:
                     60: struct voice {
                     61:        u_int chan_note;        /* channel and note */
                     62: #define MS_CHANNOTE(chan, note) ((chan) * 256 + (note))
                     63: #define MS_GETCHAN(v) ((v)->chan_note >> 8)
                     64:        u_int seqno;            /* allocation index (increases with time) */
                     65:        u_char inuse;
                     66: };
                     67:
                     68: #define MIDI_MAX_CHANS 16
                     69:
                     70: struct midisyn {
                     71:        /* Filled by synth driver */
                     72:        struct midisyn_methods *mets;
                     73:        char name[32];
                     74:        int nvoice;
                     75:        int flags;
                     76: #define MS_DOALLOC     1
                     77: #define MS_FREQXLATE   2
                     78:        void *data;
                     79:
                     80:        /* Used by midisyn driver */
                     81:        u_int8_t buf[3];
                     82:        int pos;
                     83:        struct voice *voices;
                     84:        u_int seqno;
                     85:        u_int16_t pgms[MIDI_MAX_CHANS];
                     86: };
                     87:
                     88: #define MS_GETPGM(ms, vno) ((ms)->pgms[MS_GETCHAN(&(ms)->voices[vno])])
                     89:
                     90: struct midi_softc;
                     91:
                     92: extern struct midi_hw_if midisyn_hw_if;
                     93:
                     94: void   midisyn_attach(struct midi_softc *, midisyn *);
                     95:
                     96: #define MIDISYN_FREQ_TO_HZ(f) ((f) >> 16)
                     97:
                     98: #endif /* _SYS_DEV_MIDISYNVAR_H_ */