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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@suse.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 "asequencer.h" | |
26 | ||
27 | #define MAX_MIDI_EVENT_BUF 256 | |
28 | ||
29 | typedef struct snd_midi_event_t snd_midi_event_t; | |
30 | ||
31 | /* midi status */ | |
32 | struct snd_midi_event_t { | |
33 | int qlen; /* queue length */ | |
34 | int read; /* chars read */ | |
35 | int type; /* current event type */ | |
36 | unsigned char lastcmd; /* last command (for MIDI state handling) */ | |
37 | unsigned char nostat; /* no state flag */ | |
38 | int bufsize; /* allocated buffer size */ | |
39 | unsigned char *buf; /* input buffer */ | |
40 | spinlock_t lock; | |
41 | }; | |
42 | ||
43 | int snd_midi_event_new(int bufsize, snd_midi_event_t **rdev); | |
44 | int snd_midi_event_resize_buffer(snd_midi_event_t *dev, int bufsize); | |
45 | void snd_midi_event_free(snd_midi_event_t *dev); | |
46 | void snd_midi_event_init(snd_midi_event_t *dev); | |
47 | void snd_midi_event_reset_encode(snd_midi_event_t *dev); | |
48 | void snd_midi_event_reset_decode(snd_midi_event_t *dev); | |
49 | void snd_midi_event_no_status(snd_midi_event_t *dev, int on); | |
50 | /* encode from byte stream - return number of written bytes if success */ | |
51 | long snd_midi_event_encode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev); | |
52 | int snd_midi_event_encode_byte(snd_midi_event_t *dev, int c, snd_seq_event_t *ev); | |
53 | /* decode from event to bytes - return number of written bytes if success */ | |
54 | long snd_midi_event_decode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev); | |
55 | ||
56 | #endif /* __SOUND_SEQ_MIDI_EVENT_H */ |