40 lines
1.3 KiB
C
40 lines
1.3 KiB
C
|
/* 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 */
|