1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * ALSA sequencer Client Manager
4 * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
6 #ifndef __SND_SEQ_CLIENTMGR_H
7 #define __SND_SEQ_CLIENTMGR_H
9 #include <sound/seq_kernel.h>
10 #include <linux/bitops.h>
12 #include "seq_ports.h"
18 struct snd_seq_user_client
{
19 struct file
*file
; /* file struct of client */
24 struct snd_seq_fifo
*fifo
; /* queue for incoming events */
28 struct snd_seq_kernel_client
{
30 struct snd_card
*card
;
34 struct snd_seq_client
{
35 snd_seq_client_type_t type
;
36 unsigned int accept_input
: 1,
38 char name
[64]; /* client name */
39 int number
; /* client number */
40 unsigned int filter
; /* filter flags */
41 DECLARE_BITMAP(event_filter
, 256);
42 snd_use_lock_t use_lock
;
45 int num_ports
; /* number of ports */
46 struct list_head ports_list_head
;
48 struct mutex ports_mutex
;
49 struct mutex ioctl_mutex
;
50 int convert32
; /* convert 32->64bit */
53 struct snd_seq_pool
*pool
; /* memory pool for this client */
56 struct snd_seq_user_client user
;
57 struct snd_seq_kernel_client kernel
;
61 /* usage statistics */
62 struct snd_seq_usage
{
68 int client_init_data(void);
69 int snd_sequencer_device_init(void);
70 void snd_sequencer_device_done(void);
72 /* get locked pointer to client */
73 struct snd_seq_client
*snd_seq_client_use_ptr(int clientid
);
75 /* unlock pointer to client */
76 #define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
78 /* dispatch event to client(s) */
79 int snd_seq_dispatch_event(struct snd_seq_event_cell
*cell
, int atomic
, int hop
);
81 int snd_seq_kernel_client_write_poll(int clientid
, struct file
*file
, poll_table
*wait
);
82 int snd_seq_client_notify_subscription(int client
, int port
,
83 struct snd_seq_port_subscribe
*info
, int evtype
);
85 /* only for OSS sequencer */
86 bool snd_seq_client_ioctl_lock(int clientid
);
87 void snd_seq_client_ioctl_unlock(int clientid
);
89 extern int seq_client_load
[15];