Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef __SOUND_SEQ_VIRMIDI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define __SOUND_SEQ_VIRMIDI_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *  Virtual Raw MIDI client on Sequencer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *  Copyright (c) 2000 by Takashi Iwai <tiwai@suse.de>,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  *                        Jaroslav Kysela <perex@perex.cz>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <sound/rawmidi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <sound/seq_midi_event.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * device file instance:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * This instance is created at each time the midi device file is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * opened.  Each instance has its own input buffer and MIDI parser
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * (buffer), and is associated with the device instance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct snd_virmidi {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	int seq_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	int client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	int port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	bool trigger;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct snd_midi_event *parser;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	struct snd_seq_event event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	struct snd_virmidi_dev *rdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	struct snd_rawmidi_substream *substream;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	struct work_struct output_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define SNDRV_VIRMIDI_SUBSCRIBE		(1<<0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define SNDRV_VIRMIDI_USE		(1<<1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)  * device record:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)  * Each virtual midi device has one device instance.  It contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)  * common information and the linked-list of opened files, 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct snd_virmidi_dev {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	struct snd_card *card;		/* associated card */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	struct snd_rawmidi *rmidi;		/* rawmidi device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	int seq_mode;			/* SNDRV_VIRMIDI_XXX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	int device;			/* sequencer device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	int client;			/* created/attached client */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	int port;			/* created/attached port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	unsigned int flags;		/* SNDRV_VIRMIDI_* */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	rwlock_t filelist_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	struct rw_semaphore filelist_sem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 	struct list_head filelist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* sequencer mode:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)  * ATTACH = input/output events from midi device are routed to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)  *          attached sequencer port.  sequencer port is not created
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)  *          by virmidi itself.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)  *          the input to rawmidi must be processed by passing the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)  *          incoming events via snd_virmidi_receive()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)  * DISPATCH = input/output events are routed to subscribers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)  *            sequencer port is created in virmidi.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define SNDRV_VIRMIDI_SEQ_NONE		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define SNDRV_VIRMIDI_SEQ_ATTACH	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define SNDRV_VIRMIDI_SEQ_DISPATCH	2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int snd_virmidi_new(struct snd_card *card, int device, struct snd_rawmidi **rrmidi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #endif /* __SOUND_SEQ_VIRMIDI */