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Edit File: seq_virmidi.h

/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_SEQ_VIRMIDI_H #define __SOUND_SEQ_VIRMIDI_H /* * Virtual Raw MIDI client on Sequencer * Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>, * Jaroslav Kysela <perex@perex.cz> */ #include <sound/rawmidi.h> #include <sound/seq_midi_event.h> /* * device file instance: * This instance is created at each time the midi device file is * opened. Each instance has its own input buffer and MIDI parser * (buffer), and is associated with the device instance. */ struct snd_virmidi { struct list_head list; int seq_mode; int client; int port; bool trigger; struct snd_midi_event *parser; struct snd_seq_event event; struct snd_virmidi_dev *rdev; struct snd_rawmidi_substream *substream; struct work_struct output_work; }; #define SNDRV_VIRMIDI_SUBSCRIBE (1<<0) #define SNDRV_VIRMIDI_USE (1<<1) /* * device record: * Each virtual midi device has one device instance. It contains * common information and the linked-list of opened files, */ struct snd_virmidi_dev { struct snd_card *card; /* associated card */ struct snd_rawmidi *rmidi; /* rawmidi device */ int seq_mode; /* SNDRV_VIRMIDI_XXX */ int device; /* sequencer device */ int client; /* created/attached client */ int port; /* created/attached port */ unsigned int flags; /* SNDRV_VIRMIDI_* */ rwlock_t filelist_lock; struct rw_semaphore filelist_sem; struct list_head filelist; }; /* sequencer mode: * ATTACH = input/output events from midi device are routed to the * attached sequencer port. sequencer port is not created * by virmidi itself. * the input to rawmidi must be processed by passing the * incoming events via snd_virmidi_receive() * DISPATCH = input/output events are routed to subscribers. * sequencer port is created in virmidi. */ #define SNDRV_VIRMIDI_SEQ_NONE 0 #define SNDRV_VIRMIDI_SEQ_ATTACH 1 #define SNDRV_VIRMIDI_SEQ_DISPATCH 2 int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi); #endif /* __SOUND_SEQ_VIRMIDI */