1 #ifndef __SOUND_SEQ_VIRMIDI_H 2 #define __SOUND_SEQ_VIRMIDI_H 3 4 /* 5 * Virtual Raw MIDI client on Sequencer 6 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>, 7 * Jaroslav Kysela <perex@perex.cz> 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of the GNU General Public License as published by 11 * the Free Software Foundation; either version 2 of the License, or 12 * (at your option) any later version. 13 * 14 * This program is distributed in the hope that it will be useful, 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * GNU General Public License for more details. 18 * 19 * You should have received a copy of the GNU General Public License 20 * along with this program; if not, write to the Free Software 21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 22 * 23 */ 24 25 #include <sound/rawmidi.h> 26 #include <sound/seq_midi_event.h> 27 28 /* 29 * device file instance: 30 * This instance is created at each time the midi device file is 31 * opened. Each instance has its own input buffer and MIDI parser 32 * (buffer), and is associated with the device instance. 33 */ 34 struct snd_virmidi { 35 struct list_head list; 36 int seq_mode; 37 int client; 38 int port; 39 unsigned int trigger: 1; 40 struct snd_midi_event *parser; 41 struct snd_seq_event event; 42 struct snd_virmidi_dev *rdev; 43 struct snd_rawmidi_substream *substream; 44 }; 45 46 #define SNDRV_VIRMIDI_SUBSCRIBE (1<<0) 47 #define SNDRV_VIRMIDI_USE (1<<1) 48 49 /* 50 * device record: 51 * Each virtual midi device has one device instance. It contains 52 * common information and the linked-list of opened files, 53 */ 54 struct snd_virmidi_dev { 55 struct snd_card *card; /* associated card */ 56 struct snd_rawmidi *rmidi; /* rawmidi device */ 57 int seq_mode; /* SNDRV_VIRMIDI_XXX */ 58 int device; /* sequencer device */ 59 int client; /* created/attached client */ 60 int port; /* created/attached port */ 61 unsigned int flags; /* SNDRV_VIRMIDI_* */ 62 rwlock_t filelist_lock; 63 struct rw_semaphore filelist_sem; 64 struct list_head filelist; 65 }; 66 67 /* sequencer mode: 68 * ATTACH = input/output events from midi device are routed to the 69 * attached sequencer port. sequencer port is not created 70 * by virmidi itself. 71 * the input to rawmidi must be processed by passing the 72 * incoming events via snd_virmidi_receive() 73 * DISPATCH = input/output events are routed to subscribers. 74 * sequencer port is created in virmidi. 75 */ 76 #define SNDRV_VIRMIDI_SEQ_NONE 0 77 #define SNDRV_VIRMIDI_SEQ_ATTACH 1 78 #define SNDRV_VIRMIDI_SEQ_DISPATCH 2 79 80 int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi); 81 82 #endif /* __SOUND_SEQ_VIRMIDI */ 83