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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * ALSA sequencer Client Manager
4 * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
5 */
6#ifndef __SND_SEQ_CLIENTMGR_H
7#define __SND_SEQ_CLIENTMGR_H
8
9#include <sound/seq_kernel.h>
10#include <linux/bitops.h>
11#include "seq_fifo.h"
12#include "seq_ports.h"
13#include "seq_lock.h"
14
15
16/* client manager */
17
18struct snd_seq_user_client {
19 struct file *file; /* file struct of client */
20 /* ... */
21 struct pid *owner;
22
23 /* fifo */
24 struct snd_seq_fifo *fifo; /* queue for incoming events */
25 int fifo_pool_size;
26};
27
28struct snd_seq_kernel_client {
29 /* ... */
30 struct snd_card *card;
31};
32
33
34struct snd_seq_client {
35 snd_seq_client_type_t type;
36 unsigned int accept_input: 1,
37 accept_output: 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;
43 int event_lost;
44 /* ports */
45 int num_ports; /* number of ports */
46 struct list_head ports_list_head;
47 rwlock_t ports_lock;
48 struct mutex ports_mutex;
49 struct mutex ioctl_mutex;
50 int convert32; /* convert 32->64bit */
51
52 /* output pool */
53 struct snd_seq_pool *pool; /* memory pool for this client */
54
55 union {
56 struct snd_seq_user_client user;
57 struct snd_seq_kernel_client kernel;
58 } data;
59};
60
61/* usage statistics */
62struct snd_seq_usage {
63 int cur;
64 int peak;
65};
66
67
68int client_init_data(void);
69int snd_sequencer_device_init(void);
70void snd_sequencer_device_done(void);
71
72/* get locked pointer to client */
73struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
74
75/* unlock pointer to client */
76#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
77
78/* dispatch event to client(s) */
79int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
80
81int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
82int snd_seq_client_notify_subscription(int client, int port,
83 struct snd_seq_port_subscribe *info, int evtype);
84
85/* only for OSS sequencer */
86bool snd_seq_client_ioctl_lock(int clientid);
87void snd_seq_client_ioctl_unlock(int clientid);
88
89extern int seq_client_load[15];
90
91#endif
1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * ALSA sequencer Client Manager
4 * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
5 */
6#ifndef __SND_SEQ_CLIENTMGR_H
7#define __SND_SEQ_CLIENTMGR_H
8
9#include <sound/seq_kernel.h>
10#include <linux/bitops.h>
11#include "seq_fifo.h"
12#include "seq_ports.h"
13#include "seq_lock.h"
14
15
16/* client manager */
17
18struct snd_seq_user_client {
19 struct file *file; /* file struct of client */
20 /* ... */
21 struct pid *owner;
22
23 /* fifo */
24 struct snd_seq_fifo *fifo; /* queue for incoming events */
25 int fifo_pool_size;
26};
27
28struct snd_seq_kernel_client {
29 /* ... */
30 struct snd_card *card;
31};
32
33
34struct snd_seq_client {
35 snd_seq_client_type_t type;
36 unsigned int accept_input: 1,
37 accept_output: 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;
43 int event_lost;
44 /* ports */
45 int num_ports; /* number of ports */
46 struct list_head ports_list_head;
47 rwlock_t ports_lock;
48 struct mutex ports_mutex;
49 struct mutex ioctl_mutex;
50 int convert32; /* convert 32->64bit */
51
52 /* output pool */
53 struct snd_seq_pool *pool; /* memory pool for this client */
54
55 union {
56 struct snd_seq_user_client user;
57 struct snd_seq_kernel_client kernel;
58 } data;
59};
60
61/* usage statistics */
62struct snd_seq_usage {
63 int cur;
64 int peak;
65};
66
67
68int client_init_data(void);
69int snd_sequencer_device_init(void);
70void snd_sequencer_device_done(void);
71
72/* get locked pointer to client */
73struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
74
75/* unlock pointer to client */
76#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
77
78/* dispatch event to client(s) */
79int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
80
81int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
82int snd_seq_client_notify_subscription(int client, int port,
83 struct snd_seq_port_subscribe *info, int evtype);
84
85/* only for OSS sequencer */
86bool snd_seq_client_ioctl_lock(int clientid);
87void snd_seq_client_ioctl_unlock(int clientid);
88
89extern int seq_client_load[15];
90
91#endif