fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / sound / seq_virmidi.h
blobd888433a309658ab9b306395d4663ddbb57fd899
1 #ifndef __SOUND_SEQ_VIRMIDI_H
2 #define __SOUND_SEQ_VIRMIDI_H
4 /*
5 * Virtual Raw MIDI client on Sequencer
6 * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>,
7 * Jaroslav Kysela <perex@perex.cz>
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.
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.
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
25 #include "rawmidi.h"
26 #include "seq_midi_event.h"
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.
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;
46 #define SNDRV_VIRMIDI_SUBSCRIBE (1<<0)
47 #define SNDRV_VIRMIDI_USE (1<<1)
50 * device record:
51 * Each virtual midi device has one device instance. It contains
52 * common information and the linked-list of opened files,
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 list_head filelist;
66 /* sequencer mode:
67 * ATTACH = input/output events from midi device are routed to the
68 * attached sequencer port. sequencer port is not created
69 * by virmidi itself.
70 * the input to rawmidi must be processed by passing the
71 * incoming events via snd_virmidi_receive()
72 * DISPATCH = input/output events are routed to subscribers.
73 * sequencer port is created in virmidi.
75 #define SNDRV_VIRMIDI_SEQ_NONE 0
76 #define SNDRV_VIRMIDI_SEQ_ATTACH 1
77 #define SNDRV_VIRMIDI_SEQ_DISPATCH 2
79 int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi);
81 #endif /* __SOUND_SEQ_VIRMIDI */