1/*
2 *   ALSA sequencer Client Manager
3 *   Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl>
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
33struct snd_seq_user_client {
34	struct file *file;	/* file struct of client */
35	/* ... */
36
37	/* fifo */
38	struct snd_seq_fifo *fifo;	/* queue for incoming events */
39	int fifo_pool_size;
40};
41
42struct snd_seq_kernel_client {
43	/* ... */
44};
45
46
47struct snd_seq_client {
48	snd_seq_client_type_t type;
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 */
54	DECLARE_BITMAP(event_filter, 256);
55	snd_use_lock_t use_lock;
56	int event_lost;
57	/* ports */
58	int num_ports;		/* number of ports */
59	struct list_head ports_list_head;
60	rwlock_t ports_lock;
61	struct mutex ports_mutex;
62	int convert32;		/* convert 32->64bit */
63
64	/* output pool */
65	struct snd_seq_pool *pool;		/* memory pool for this client */
66
67	union {
68		struct snd_seq_user_client user;
69		struct snd_seq_kernel_client kernel;
70	} data;
71};
72
73/* usage statistics */
74struct snd_seq_usage {
75	int cur;
76	int peak;
77};
78
79
80int client_init_data(void);
81int snd_sequencer_device_init(void);
82void snd_sequencer_device_done(void);
83
84/* get locked pointer to client */
85struct 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) */
91int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop);
92
93/* exported to other modules */
94int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, int atomic, int hop);
95int snd_seq_kernel_client_enqueue_blocking(int client, struct snd_seq_event * ev,
96					   struct file *file, int atomic, int hop);
97int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait);
98int snd_seq_client_notify_subscription(int client, int port,
99				       struct snd_seq_port_subscribe *info, int evtype);
100
101#endif
102