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1/* SPDX-License-Identifier: GPL-2.0-or-later */2#ifndef __SOUND_SEQ_MIDI_EVENT_H3#define __SOUND_SEQ_MIDI_EVENT_H4 5/*6 * MIDI byte <-> sequencer event coder7 *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 25615 16/* midi status */17struct 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 28int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev);29void snd_midi_event_free(struct snd_midi_event *dev);30void snd_midi_event_reset_encode(struct snd_midi_event *dev);31void snd_midi_event_reset_decode(struct snd_midi_event *dev);32void snd_midi_event_no_status(struct snd_midi_event *dev, int on);33bool 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 */36long 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