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seq_clientmgr.h
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1 /*
2  * ALSA sequencer Client Manager
3  * Copyright (c) 1998-1999 by Frank van de Pol <[email protected]>
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 #ifndef __SND_SEQ_CLIENTMGR_H
22 #define __SND_SEQ_CLIENTMGR_H
23 
24 #include <sound/seq_kernel.h>
25 #include <linux/bitops.h>
26 #include "seq_fifo.h"
27 #include "seq_ports.h"
28 #include "seq_lock.h"
29 
30 
31 /* client manager */
32 
34  struct file *file; /* file struct of client */
35  /* ... */
36 
37  /* fifo */
38  struct snd_seq_fifo *fifo; /* queue for incoming events */
40 };
41 
43  /* ... */
44 };
45 
46 
49  unsigned int accept_input: 1,
50  accept_output: 1;
51  char name[64]; /* client name */
52  int number; /* client number */
53  unsigned int filter; /* filter flags */
57  /* ports */
58  int num_ports; /* number of ports */
62  int convert32; /* convert 32->64bit */
63 
64  /* output pool */
65  struct snd_seq_pool *pool; /* memory pool for this client */
66 
67  union {
70  } data;
71 };
72 
73 /* usage statistics */
74 struct snd_seq_usage {
75  int cur;
76  int peak;
77 };
78 
79 
80 int client_init_data(void);
82 void snd_sequencer_device_done(void);
83 
84 /* get locked pointer to client */
85 struct snd_seq_client *snd_seq_client_use_ptr(int clientid);
86 
87 /* unlock pointer to client */
88 #define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock)
89 
90 /* dispatch event to client(s) */
91 int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
92 
93 /* exported to other modules */
94 int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, int atomic, int hop);
96  struct file *file, int atomic, int hop);
97 int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
99  struct snd_seq_port_subscribe *info, int evtype);
100 
101 extern int seq_client_load[15];
102 
103 #endif