projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 1da177e4 LT |
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>, | |
| c1017a4c | 9 | * Jaroslav Kysela <perex@perex.cz> |
| 1da177e4 LT |
10 | */ |
| 11 | ||
| a1ce3928 | 12 | #include <sound/asequencer.h> |
| 1da177e4 LT |
13 | |
| 14 | #define MAX_MIDI_EVENT_BUF 256 | |
| 15 | ||
| 1da177e4 | 16 | /* midi status */ |
| c7e0b5bf | 17 | struct snd_midi_event { |
| 1da177e4 LT |
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 | ||
| c7e0b5bf TI |
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); | |
| ef965ad5 TI |
33 | bool snd_midi_event_encode_byte(struct snd_midi_event *dev, unsigned char c, |
| 34 | struct snd_seq_event *ev); | |
| 1da177e4 | 35 | /* decode from event to bytes - return number of written bytes if success */ |
| c7e0b5bf TI |
36 | long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long count, |
| 37 | struct snd_seq_event *ev); | |
| 1da177e4 LT |
38 | |
| 39 | #endif /* __SOUND_SEQ_MIDI_EVENT_H */ |