| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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@suse.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 "asequencer.h" |
| 26 | |
| 27 | #define MAX_MIDI_EVENT_BUF 256 |
| 28 | |
| 29 | typedef struct snd_midi_event_t snd_midi_event_t; |
| 30 | |
| 31 | /* midi status */ |
| 32 | struct snd_midi_event_t { |
| 33 | int qlen; /* queue length */ |
| 34 | int read; /* chars read */ |
| 35 | int type; /* current event type */ |
| 36 | unsigned char lastcmd; /* last command (for MIDI state handling) */ |
| 37 | unsigned char nostat; /* no state flag */ |
| 38 | int bufsize; /* allocated buffer size */ |
| 39 | unsigned char *buf; /* input buffer */ |
| 40 | spinlock_t lock; |
| 41 | }; |
| 42 | |
| 43 | int snd_midi_event_new(int bufsize, snd_midi_event_t **rdev); |
| 44 | int snd_midi_event_resize_buffer(snd_midi_event_t *dev, int bufsize); |
| 45 | void snd_midi_event_free(snd_midi_event_t *dev); |
| 46 | void snd_midi_event_init(snd_midi_event_t *dev); |
| 47 | void snd_midi_event_reset_encode(snd_midi_event_t *dev); |
| 48 | void snd_midi_event_reset_decode(snd_midi_event_t *dev); |
| 49 | void snd_midi_event_no_status(snd_midi_event_t *dev, int on); |
| 50 | /* encode from byte stream - return number of written bytes if success */ |
| 51 | long snd_midi_event_encode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev); |
| 52 | int snd_midi_event_encode_byte(snd_midi_event_t *dev, int c, snd_seq_event_t *ev); |
| 53 | /* decode from event to bytes - return number of written bytes if success */ |
| 54 | long snd_midi_event_decode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev); |
| 55 | |
| 56 | #endif /* __SOUND_SEQ_MIDI_EVENT_H */ |