mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-01 06:33:07 +00:00
1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
91 lines
2.1 KiB
C
91 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
/*
|
|
* ALSA sequencer Client Manager
|
|
* Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
|
|
*/
|
|
#ifndef __SND_SEQ_CLIENTMGR_H
|
|
#define __SND_SEQ_CLIENTMGR_H
|
|
|
|
#include <sound/seq_kernel.h>
|
|
#include <linux/bitops.h>
|
|
#include "seq_fifo.h"
|
|
#include "seq_ports.h"
|
|
#include "seq_lock.h"
|
|
|
|
|
|
/* client manager */
|
|
|
|
struct snd_seq_user_client {
|
|
struct file *file; /* file struct of client */
|
|
/* ... */
|
|
struct pid *owner;
|
|
|
|
/* fifo */
|
|
struct snd_seq_fifo *fifo; /* queue for incoming events */
|
|
int fifo_pool_size;
|
|
};
|
|
|
|
struct snd_seq_kernel_client {
|
|
/* ... */
|
|
struct snd_card *card;
|
|
};
|
|
|
|
|
|
struct snd_seq_client {
|
|
snd_seq_client_type_t type;
|
|
unsigned int accept_input: 1,
|
|
accept_output: 1;
|
|
char name[64]; /* client name */
|
|
int number; /* client number */
|
|
unsigned int filter; /* filter flags */
|
|
DECLARE_BITMAP(event_filter, 256);
|
|
snd_use_lock_t use_lock;
|
|
int event_lost;
|
|
/* ports */
|
|
int num_ports; /* number of ports */
|
|
struct list_head ports_list_head;
|
|
rwlock_t ports_lock;
|
|
struct mutex ports_mutex;
|
|
struct mutex ioctl_mutex;
|
|
int convert32; /* convert 32->64bit */
|
|
|
|
/* output pool */
|
|
struct snd_seq_pool *pool; /* memory pool for this client */
|
|
|
|
union {
|
|
struct snd_seq_user_client user;
|
|
struct snd_seq_kernel_client kernel;
|
|
} data;
|
|
};
|
|
|
|
/* usage statistics */
|
|
struct snd_seq_usage {
|
|
int cur;
|
|
int peak;
|
|
};
|
|
|
|
|
|
int client_init_data(void);
|
|
int snd_sequencer_device_init(void);
|
|
void snd_sequencer_device_done(void);
|
|
|
|
/* get locked pointer to client */
|
|
struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
|
|
|
|
/* unlock pointer to client */
|
|
#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
|
|
|
|
/* dispatch event to client(s) */
|
|
int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
|
|
|
|
int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
|
|
int snd_seq_client_notify_subscription(int client, int port,
|
|
struct snd_seq_port_subscribe *info, int evtype);
|
|
|
|
/* only for OSS sequencer */
|
|
bool snd_seq_client_ioctl_lock(int clientid);
|
|
void snd_seq_client_ioctl_unlock(int clientid);
|
|
|
|
extern int seq_client_load[15];
|
|
|
|
#endif
|