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Diffstat (limited to 'sound/core/seq/seq_clientmgr.h')
-rw-r--r-- | sound/core/seq/seq_clientmgr.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/sound/core/seq/seq_clientmgr.h b/sound/core/seq/seq_clientmgr.h new file mode 100644 index 00000000000..3715c36183d --- /dev/null +++ b/sound/core/seq/seq_clientmgr.h @@ -0,0 +1,104 @@ +/* + * ALSA sequencer Client Manager + * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ +#ifndef __SND_SEQ_CLIENTMGR_H +#define __SND_SEQ_CLIENTMGR_H + +#include <sound/seq_kernel.h> +#include <linux/bitops.h> +#include "seq_fifo.h" +#include "seq_ports.h" +#include "seq_lock.h" + + +/* client manager */ + +struct _snd_seq_user_client { + struct file *file; /* file struct of client */ + /* ... */ + + /* fifo */ + fifo_t *fifo; /* queue for incoming events */ + int fifo_pool_size; +}; + +struct _snd_seq_kernel_client { + snd_card_t *card; + /* pointer to client functions */ + void *private_data; /* private data for client */ + /* ... */ +}; + + +struct _snd_seq_client { + snd_seq_client_type_t type; + unsigned int accept_input: 1, + accept_output: 1; + char name[64]; /* client name */ + int number; /* client number */ + unsigned int filter; /* filter flags */ + DECLARE_BITMAP(event_filter, 256); + snd_use_lock_t use_lock; + int event_lost; + /* ports */ + int num_ports; /* number of ports */ + struct list_head ports_list_head; + rwlock_t ports_lock; + struct semaphore ports_mutex; + int convert32; /* convert 32->64bit */ + + /* output pool */ + pool_t *pool; /* memory pool for this client */ + + union { + user_client_t user; + kernel_client_t kernel; + } data; +}; + +/* usage statistics */ +typedef struct { + int cur; + int peak; +} usage_t; + + +extern int client_init_data(void); +extern int snd_sequencer_device_init(void); +extern void snd_sequencer_device_done(void); + +/* get locked pointer to client */ +extern client_t *snd_seq_client_use_ptr(int clientid); + +/* unlock pointer to client */ +#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock) + +/* dispatch event to client(s) */ +extern int snd_seq_dispatch_event(snd_seq_event_cell_t *cell, int atomic, int hop); + +/* exported to other modules */ +extern int snd_seq_register_kernel_client(snd_seq_client_callback_t *callback, void *private_data); +extern int snd_seq_unregister_kernel_client(int client); +extern int snd_seq_kernel_client_enqueue(int client, snd_seq_event_t *ev, int atomic, int hop); +int snd_seq_kernel_client_enqueue_blocking(int client, snd_seq_event_t * ev, struct file *file, int atomic, int hop); +int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait); +int snd_seq_client_notify_subscription(int client, int port, snd_seq_port_subscribe_t *info, int evtype); + +#endif |