diff options
Diffstat (limited to 'kernel/include/sound/seq_midi_event.h')
| -rw-r--r-- | kernel/include/sound/seq_midi_event.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/kernel/include/sound/seq_midi_event.h b/kernel/include/sound/seq_midi_event.h new file mode 100644 index 000000000..e40f43e6f --- /dev/null +++ b/kernel/include/sound/seq_midi_event.h @@ -0,0 +1,54 @@ +#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> + * + * 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 <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); +/* encode from byte stream - return number of written bytes if success */ +long snd_midi_event_encode(struct snd_midi_event *dev, unsigned char *buf, long count, + struct snd_seq_event *ev); +int snd_midi_event_encode_byte(struct snd_midi_event *dev, int 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 */ |