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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>,
c1017a4c 7 * Jaroslav Kysela <perex@perex.cz>
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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
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25#include <sound/rawmidi.h>
26#include <sound/seq_midi_event.h>
1da177e4 27
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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 */
c7e0b5bf 34struct snd_virmidi {
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35 struct list_head list;
36 int seq_mode;
37 int client;
38 int port;
89b4ab21 39 bool trigger;
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40 struct snd_midi_event *parser;
41 struct snd_seq_event event;
42 struct snd_virmidi_dev *rdev;
43 struct snd_rawmidi_substream *substream;
f7debfe5 44 struct work_struct output_work;
c7e0b5bf 45};
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46
47#define SNDRV_VIRMIDI_SUBSCRIBE (1<<0)
48#define SNDRV_VIRMIDI_USE (1<<1)
49
50/*
51 * device record:
52 * Each virtual midi device has one device instance. It contains
53 * common information and the linked-list of opened files,
54 */
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55struct snd_virmidi_dev {
56 struct snd_card *card; /* associated card */
57 struct snd_rawmidi *rmidi; /* rawmidi device */
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58 int seq_mode; /* SNDRV_VIRMIDI_XXX */
59 int device; /* sequencer device */
60 int client; /* created/attached client */
61 int port; /* created/attached port */
62 unsigned int flags; /* SNDRV_VIRMIDI_* */
63 rwlock_t filelist_lock;
5803b023 64 struct rw_semaphore filelist_sem;
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65 struct list_head filelist;
66};
67
68/* sequencer mode:
69 * ATTACH = input/output events from midi device are routed to the
70 * attached sequencer port. sequencer port is not created
71 * by virmidi itself.
72 * the input to rawmidi must be processed by passing the
73 * incoming events via snd_virmidi_receive()
74 * DISPATCH = input/output events are routed to subscribers.
75 * sequencer port is created in virmidi.
76 */
77#define SNDRV_VIRMIDI_SEQ_NONE 0
78#define SNDRV_VIRMIDI_SEQ_ATTACH 1
79#define SNDRV_VIRMIDI_SEQ_DISPATCH 2
80
c7e0b5bf 81int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi);
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82
83#endif /* __SOUND_SEQ_VIRMIDI */