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1a59d1b8 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * ALSA sequencer Client Manager | |
4 | * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl> | |
1da177e4 LT |
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 | ||
c7e0b5bf | 18 | struct snd_seq_user_client { |
1da177e4 LT |
19 | struct file *file; /* file struct of client */ |
20 | /* ... */ | |
a1ce94d0 | 21 | struct pid *owner; |
1da177e4 LT |
22 | |
23 | /* fifo */ | |
c7e0b5bf | 24 | struct snd_seq_fifo *fifo; /* queue for incoming events */ |
1da177e4 LT |
25 | int fifo_pool_size; |
26 | }; | |
27 | ||
c7e0b5bf | 28 | struct snd_seq_kernel_client { |
1da177e4 | 29 | /* ... */ |
a1ce94d0 | 30 | struct snd_card *card; |
1da177e4 LT |
31 | }; |
32 | ||
33 | ||
c7e0b5bf | 34 | struct snd_seq_client { |
1da177e4 LT |
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; | |
1a60d4c5 | 48 | struct mutex ports_mutex; |
b3defb79 | 49 | struct mutex ioctl_mutex; |
1da177e4 LT |
50 | int convert32; /* convert 32->64bit */ |
51 | ||
52 | /* output pool */ | |
c7e0b5bf | 53 | struct snd_seq_pool *pool; /* memory pool for this client */ |
1da177e4 LT |
54 | |
55 | union { | |
c7e0b5bf TI |
56 | struct snd_seq_user_client user; |
57 | struct snd_seq_kernel_client kernel; | |
1da177e4 LT |
58 | } data; |
59 | }; | |
60 | ||
61 | /* usage statistics */ | |
c7e0b5bf | 62 | struct snd_seq_usage { |
1da177e4 LT |
63 | int cur; |
64 | int peak; | |
c7e0b5bf | 65 | }; |
1da177e4 LT |
66 | |
67 | ||
c7e0b5bf TI |
68 | int client_init_data(void); |
69 | int snd_sequencer_device_init(void); | |
70 | void snd_sequencer_device_done(void); | |
1da177e4 LT |
71 | |
72 | /* get locked pointer to client */ | |
c7e0b5bf | 73 | struct snd_seq_client *snd_seq_client_use_ptr(int clientid); |
1da177e4 LT |
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) */ | |
c7e0b5bf | 79 | int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop); |
1da177e4 | 80 | |
1da177e4 | 81 | int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait); |
c7e0b5bf TI |
82 | int snd_seq_client_notify_subscription(int client, int port, |
83 | struct snd_seq_port_subscribe *info, int evtype); | |
1da177e4 | 84 | |
6b580f52 TI |
85 | /* only for OSS sequencer */ |
86 | bool snd_seq_client_ioctl_lock(int clientid); | |
87 | void snd_seq_client_ioctl_unlock(int clientid); | |
88 | ||
3b378e1f MŚ |
89 | extern int seq_client_load[15]; |
90 | ||
1da177e4 | 91 | #endif |