mirror of
https://github.com/torvalds/linux.git
synced 2024-11-25 05:32:00 +00:00
b0b228bb8d
These functions are never implemented and used. Signed-off-by: Yue Haibing <yuehaibing@huawei.com> Link: https://patch.msgid.link/20240817093334.1120002-1-yuehaibing@huawei.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* ALSA sequencer Queue handling
|
|
* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
|
|
*/
|
|
#ifndef __SND_SEQ_QUEUE_H
|
|
#define __SND_SEQ_QUEUE_H
|
|
|
|
#include "seq_memory.h"
|
|
#include "seq_prioq.h"
|
|
#include "seq_timer.h"
|
|
#include "seq_lock.h"
|
|
#include <linux/interrupt.h>
|
|
#include <linux/list.h>
|
|
#include <linux/bitops.h>
|
|
|
|
#define SEQ_QUEUE_NO_OWNER (-1)
|
|
|
|
struct snd_seq_queue {
|
|
int queue; /* queue number */
|
|
|
|
char name[64]; /* name of this queue */
|
|
|
|
struct snd_seq_prioq *tickq; /* midi tick event queue */
|
|
struct snd_seq_prioq *timeq; /* real-time event queue */
|
|
|
|
struct snd_seq_timer *timer; /* time keeper for this queue */
|
|
int owner; /* client that 'owns' the timer */
|
|
bool locked; /* timer is only accesibble by owner if set */
|
|
bool klocked; /* kernel lock (after START) */
|
|
bool check_again; /* concurrent access happened during check */
|
|
bool check_blocked; /* queue being checked */
|
|
|
|
unsigned int flags; /* status flags */
|
|
unsigned int info_flags; /* info for sync */
|
|
|
|
spinlock_t owner_lock;
|
|
spinlock_t check_lock;
|
|
|
|
/* clients which uses this queue (bitmap) */
|
|
DECLARE_BITMAP(clients_bitmap, SNDRV_SEQ_MAX_CLIENTS);
|
|
unsigned int clients; /* users of this queue */
|
|
struct mutex timer_mutex;
|
|
|
|
snd_use_lock_t use_lock;
|
|
};
|
|
|
|
|
|
/* get the number of current queues */
|
|
int snd_seq_queue_get_cur_queues(void);
|
|
|
|
/* delete queues */
|
|
void snd_seq_queues_delete(void);
|
|
|
|
|
|
/* create new queue (constructor) */
|
|
struct snd_seq_queue *snd_seq_queue_alloc(int client, int locked, unsigned int flags);
|
|
|
|
/* delete queue (destructor) */
|
|
int snd_seq_queue_delete(int client, int queueid);
|
|
|
|
/* final stage */
|
|
void snd_seq_queue_client_leave(int client);
|
|
|
|
/* enqueue a event received from one the clients */
|
|
int snd_seq_enqueue_event(struct snd_seq_event_cell *cell, int atomic, int hop);
|
|
|
|
/* Remove events */
|
|
void snd_seq_queue_client_leave_cells(int client);
|
|
void snd_seq_queue_remove_cells(int client, struct snd_seq_remove_events *info);
|
|
|
|
/* return pointer to queue structure for specified id */
|
|
struct snd_seq_queue *queueptr(int queueid);
|
|
/* unlock */
|
|
#define queuefree(q) snd_use_lock_free(&(q)->use_lock)
|
|
|
|
/* return the (first) queue matching with the specified name */
|
|
struct snd_seq_queue *snd_seq_queue_find_name(char *name);
|
|
|
|
/* check single queue and dispatch events */
|
|
void snd_seq_check_queue(struct snd_seq_queue *q, int atomic, int hop);
|
|
|
|
/* access to queue's parameters */
|
|
int snd_seq_queue_check_access(int queueid, int client);
|
|
int snd_seq_queue_timer_set_tempo(int queueid, int client, struct snd_seq_queue_tempo *info);
|
|
int snd_seq_queue_set_owner(int queueid, int client, int locked);
|
|
int snd_seq_queue_timer_open(int queueid);
|
|
int snd_seq_queue_timer_close(int queueid);
|
|
int snd_seq_queue_use(int queueid, int client, int use);
|
|
int snd_seq_queue_is_used(int queueid, int client);
|
|
|
|
int snd_seq_control_queue(struct snd_seq_event *ev, int atomic, int hop);
|
|
|
|
#endif
|