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1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
---|---|
2 | #ifndef __SOUND_SEQ_MIDI_EVENT_H |
3 | #define __SOUND_SEQ_MIDI_EVENT_H |
4 | |
5 | /* |
6 | * MIDI byte <-> sequencer event coder |
7 | * |
8 | * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>, |
9 | * Jaroslav Kysela <perex@perex.cz> |
10 | */ |
11 | |
12 | #include <sound/asequencer.h> |
13 | |
14 | #define MAX_MIDI_EVENT_BUF 256 |
15 | |
16 | /* midi status */ |
17 | struct snd_midi_event { |
18 | int qlen; /* queue length */ |
19 | int read; /* chars read */ |
20 | int type; /* current event type */ |
21 | unsigned char lastcmd; /* last command (for MIDI state handling) */ |
22 | unsigned char nostat; /* no state flag */ |
23 | int bufsize; /* allocated buffer size */ |
24 | unsigned char *buf; /* input buffer */ |
25 | spinlock_t lock; |
26 | }; |
27 | |
28 | int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev); |
29 | void snd_midi_event_free(struct snd_midi_event *dev); |
30 | void snd_midi_event_reset_encode(struct snd_midi_event *dev); |
31 | void snd_midi_event_reset_decode(struct snd_midi_event *dev); |
32 | void snd_midi_event_no_status(struct snd_midi_event *dev, int on); |
33 | bool snd_midi_event_encode_byte(struct snd_midi_event *dev, unsigned char c, |
34 | struct snd_seq_event *ev); |
35 | /* decode from event to bytes - return number of written bytes if success */ |
36 | long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long count, |
37 | struct snd_seq_event *ev); |
38 | |
39 | #endif /* __SOUND_SEQ_MIDI_EVENT_H */ |
40 |
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