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/* 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 */