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1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | #ifndef __SOUND_SEQ_VIRMIDI_H |
3 | #define __SOUND_SEQ_VIRMIDI_H | |
4 | ||
5 | /* | |
6 | * Virtual Raw MIDI client on Sequencer | |
7 | * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>, | |
c1017a4c | 8 | * Jaroslav Kysela <perex@perex.cz> |
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9 | */ |
10 | ||
a1ce3928 DH |
11 | #include <sound/rawmidi.h> |
12 | #include <sound/seq_midi_event.h> | |
1da177e4 | 13 | |
1da177e4 LT |
14 | /* |
15 | * device file instance: | |
16 | * This instance is created at each time the midi device file is | |
17 | * opened. Each instance has its own input buffer and MIDI parser | |
18 | * (buffer), and is associated with the device instance. | |
19 | */ | |
c7e0b5bf | 20 | struct snd_virmidi { |
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21 | struct list_head list; |
22 | int seq_mode; | |
23 | int client; | |
24 | int port; | |
89b4ab21 | 25 | bool trigger; |
c7e0b5bf TI |
26 | struct snd_midi_event *parser; |
27 | struct snd_seq_event event; | |
28 | struct snd_virmidi_dev *rdev; | |
29 | struct snd_rawmidi_substream *substream; | |
f7debfe5 | 30 | struct work_struct output_work; |
c7e0b5bf | 31 | }; |
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32 | |
33 | #define SNDRV_VIRMIDI_SUBSCRIBE (1<<0) | |
34 | #define SNDRV_VIRMIDI_USE (1<<1) | |
35 | ||
36 | /* | |
37 | * device record: | |
38 | * Each virtual midi device has one device instance. It contains | |
39 | * common information and the linked-list of opened files, | |
40 | */ | |
c7e0b5bf TI |
41 | struct snd_virmidi_dev { |
42 | struct snd_card *card; /* associated card */ | |
43 | struct snd_rawmidi *rmidi; /* rawmidi device */ | |
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44 | int seq_mode; /* SNDRV_VIRMIDI_XXX */ |
45 | int device; /* sequencer device */ | |
46 | int client; /* created/attached client */ | |
47 | int port; /* created/attached port */ | |
48 | unsigned int flags; /* SNDRV_VIRMIDI_* */ | |
49 | rwlock_t filelist_lock; | |
5803b023 | 50 | struct rw_semaphore filelist_sem; |
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51 | struct list_head filelist; |
52 | }; | |
53 | ||
54 | /* sequencer mode: | |
55 | * ATTACH = input/output events from midi device are routed to the | |
56 | * attached sequencer port. sequencer port is not created | |
57 | * by virmidi itself. | |
58 | * the input to rawmidi must be processed by passing the | |
59 | * incoming events via snd_virmidi_receive() | |
60 | * DISPATCH = input/output events are routed to subscribers. | |
61 | * sequencer port is created in virmidi. | |
62 | */ | |
63 | #define SNDRV_VIRMIDI_SEQ_NONE 0 | |
64 | #define SNDRV_VIRMIDI_SEQ_ATTACH 1 | |
65 | #define SNDRV_VIRMIDI_SEQ_DISPATCH 2 | |
66 | ||
c7e0b5bf | 67 | int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi); |
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68 | |
69 | #endif /* __SOUND_SEQ_VIRMIDI */ |