1 #ifndef __SOUND_SEQ_MIDI_EVENT_H 2 #define __SOUND_SEQ_MIDI_EVENT_H 3 4 /* 5 * MIDI byte <-> sequencer event coder 6 * 7 * Copyright (C) 1998,99 Takashi Iwai <tiwai@suse.de>, 8 * Jaroslav Kysela <perex@perex.cz> 9 * 10 * This program is free software; you can redistribute it and/or modify 11 * it under the terms of the GNU General Public License as published by 12 * the Free Software Foundation; either version 2 of the License, or 13 * (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23 */ 24 25 #include <sound/asequencer.h> 26 27 #define MAX_MIDI_EVENT_BUF 256 28 29 /* midi status */ 30 struct snd_midi_event { 31 int qlen; /* queue length */ 32 int read; /* chars read */ 33 int type; /* current event type */ 34 unsigned char lastcmd; /* last command (for MIDI state handling) */ 35 unsigned char nostat; /* no state flag */ 36 int bufsize; /* allocated buffer size */ 37 unsigned char *buf; /* input buffer */ 38 spinlock_t lock; 39 }; 40 41 int snd_midi_event_new(int bufsize, struct snd_midi_event **rdev); 42 void snd_midi_event_free(struct snd_midi_event *dev); 43 void snd_midi_event_reset_encode(struct snd_midi_event *dev); 44 void snd_midi_event_reset_decode(struct snd_midi_event *dev); 45 void snd_midi_event_no_status(struct snd_midi_event *dev, int on); 46 bool snd_midi_event_encode_byte(struct snd_midi_event *dev, unsigned char c, 47 struct snd_seq_event *ev); 48 /* decode from event to bytes - return number of written bytes if success */ 49 long snd_midi_event_decode(struct snd_midi_event *dev, unsigned char *buf, long count, 50 struct snd_seq_event *ev); 51 52 #endif /* __SOUND_SEQ_MIDI_EVENT_H */ 53