| 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */
|
|---|
| 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>,
|
|---|
| 8 | * Jaroslav Kysela <perex@perex.cz>
|
|---|
| 9 | */
|
|---|
| 10 |
|
|---|
| 11 | #include <sound/rawmidi.h>
|
|---|
| 12 | #include <sound/seq_midi_event.h>
|
|---|
| 13 |
|
|---|
| 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 | */
|
|---|
| 20 | struct snd_virmidi {
|
|---|
| 21 | struct list_head list;
|
|---|
| 22 | int seq_mode;
|
|---|
| 23 | int client;
|
|---|
| 24 | int port;
|
|---|
| 25 | bool trigger;
|
|---|
| 26 | struct snd_midi_event *parser;
|
|---|
| 27 | struct snd_seq_event event;
|
|---|
| 28 | struct snd_virmidi_dev *rdev;
|
|---|
| 29 | struct snd_rawmidi_substream *substream;
|
|---|
| 30 | struct work_struct output_work;
|
|---|
| 31 | };
|
|---|
| 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 | */
|
|---|
| 41 | struct snd_virmidi_dev {
|
|---|
| 42 | struct snd_card *card; /* associated card */
|
|---|
| 43 | struct snd_rawmidi *rmidi; /* rawmidi device */
|
|---|
| 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;
|
|---|
| 50 | struct rw_semaphore filelist_sem;
|
|---|
| 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 |
|
|---|
| 67 | int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi);
|
|---|
| 68 |
|
|---|
| 69 | #endif /* __SOUND_SEQ_VIRMIDI */
|
|---|
