1 #ifndef __SOUND_SEQ_MIDI_EVENT_H
2 #define __SOUND_SEQ_MIDI_EVENT_H
3 
4 /*
5  *  MIDI byte <-> sequencer event coder
6  *
7  *  Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>,
8  *                        Jaroslav Kysela <perex@perex.cz>
9  *
10  *   This program is free software; you can redistribute it and/or modify
11  *   it under the terms of the GNU General Public License as published by
12  *   the Free Software Foundation; either version 2 of the License, or
13  *   (at your option) any later version.
14  *
15  *   This program is distributed in the hope that it will be useful,
16  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
17  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  *   GNU General Public License for more details.
19  *
20  *   You should have received a copy of the GNU General Public License
21  *   along with this program; if not, write to the Free Software
22  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
23  */
24 
25 #include <sound/asequencer.h>
26 
27 #define MAX_MIDI_EVENT_BUF	256
28 
29 /* midi status */
30 struct snd_midi_event {
31 	int qlen;		/* queue length */
32 	int read;		/* chars read */
33 	int type;		/* current event type */
34 	unsigned char lastcmd;	/* last command (for MIDI state handling) */
35 	unsigned char nostat;	/* no state flag */
36 	int bufsize;		/* allocated buffer size */
37 	unsigned char *buf;	/* input buffer */
38 	spinlock_t lock;
39 };
40 
41 int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev);
42 void snd_midi_event_free(struct snd_midi_event *dev);
43 void snd_midi_event_reset_encode(struct snd_midi_event *dev);
44 void snd_midi_event_reset_decode(struct snd_midi_event *dev);
45 void snd_midi_event_no_status(struct snd_midi_event *dev, int on);
46 /* encode from byte stream - return number of written bytes if success */
47 long snd_midi_event_encode(struct snd_midi_event *dev, unsigned char *buf, long count,
48 			   struct snd_seq_event *ev);
49 int snd_midi_event_encode_byte(struct snd_midi_event *dev, int c, struct snd_seq_event *ev);
50 /* decode from event to bytes - return number of written bytes if success */
51 long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long count,
52 			   struct snd_seq_event *ev);
53 
54 #endif /* __SOUND_SEQ_MIDI_EVENT_H */
55