name : seq_midi_event.h /* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_SEQ_MIDI_EVENT_H #define __SOUND_SEQ_MIDI_EVENT_H /* * MIDI byte <-> sequencer event coder * * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>, * Jaroslav Kysela <perex@perex.cz> */ #include <sound/asequencer.h> #define MAX_MIDI_EVENT_BUF 256 /* midi status */ struct snd_midi_event { int qlen; /* queue length */ int read; /* chars read */ int type; /* current event type */ unsigned char lastcmd; /* last command (for MIDI state handling) */ unsigned char nostat; /* no state flag */ int bufsize; /* allocated buffer size */ unsigned char *buf; /* input buffer */ spinlock_t lock; }; int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev); void snd_midi_event_free(struct snd_midi_event *dev); void snd_midi_event_reset_encode(struct snd_midi_event *dev); void snd_midi_event_reset_decode(struct snd_midi_event *dev); void snd_midi_event_no_status(struct snd_midi_event *dev, int on); bool snd_midi_event_encode_byte(struct snd_midi_event *dev, unsigned char c, struct snd_seq_event *ev); /* decode from event to bytes - return number of written bytes if success */ long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long count, struct snd_seq_event *ev); #endif /* __SOUND_SEQ_MIDI_EVENT_H */