mirror of https://gitee.com/openkylin/linux.git
55 lines
2.2 KiB
C
55 lines
2.2 KiB
C
#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@suse.cz>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
|
|
#include "asequencer.h"
|
|
|
|
#define MAX_MIDI_EVENT_BUF 256
|
|
|
|
typedef struct snd_midi_event_t snd_midi_event_t;
|
|
|
|
/* midi status */
|
|
struct snd_midi_event_t {
|
|
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, snd_midi_event_t **rdev);
|
|
void snd_midi_event_free(snd_midi_event_t *dev);
|
|
void snd_midi_event_reset_encode(snd_midi_event_t *dev);
|
|
void snd_midi_event_reset_decode(snd_midi_event_t *dev);
|
|
void snd_midi_event_no_status(snd_midi_event_t *dev, int on);
|
|
/* encode from byte stream - return number of written bytes if success */
|
|
long snd_midi_event_encode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev);
|
|
int snd_midi_event_encode_byte(snd_midi_event_t *dev, int c, snd_seq_event_t *ev);
|
|
/* decode from event to bytes - return number of written bytes if success */
|
|
long snd_midi_event_decode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev);
|
|
|
|
#endif /* __SOUND_SEQ_MIDI_EVENT_H */
|