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91 lines
2.1 KiB
91 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* ALSA sequencer Client Manager |
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* Copyright (c) 1998-1999 by Frank van de Pol <[email protected]> |
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*/ |
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#ifndef __SND_SEQ_CLIENTMGR_H |
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#define __SND_SEQ_CLIENTMGR_H |
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#include <sound/seq_kernel.h> |
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#include <linux/bitops.h> |
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#include "seq_fifo.h" |
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#include "seq_ports.h" |
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#include "seq_lock.h" |
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/* client manager */ |
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struct snd_seq_user_client { |
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struct file *file; /* file struct of client */ |
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/* ... */ |
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struct pid *owner; |
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/* fifo */ |
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struct snd_seq_fifo *fifo; /* queue for incoming events */ |
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int fifo_pool_size; |
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}; |
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struct snd_seq_kernel_client { |
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/* ... */ |
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struct snd_card *card; |
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}; |
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struct snd_seq_client { |
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snd_seq_client_type_t type; |
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unsigned int accept_input: 1, |
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accept_output: 1; |
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char name[64]; /* client name */ |
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int number; /* client number */ |
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unsigned int filter; /* filter flags */ |
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DECLARE_BITMAP(event_filter, 256); |
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snd_use_lock_t use_lock; |
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int event_lost; |
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/* ports */ |
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int num_ports; /* number of ports */ |
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struct list_head ports_list_head; |
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rwlock_t ports_lock; |
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struct mutex ports_mutex; |
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struct mutex ioctl_mutex; |
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int convert32; /* convert 32->64bit */ |
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/* output pool */ |
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struct snd_seq_pool *pool; /* memory pool for this client */ |
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union { |
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struct snd_seq_user_client user; |
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struct snd_seq_kernel_client kernel; |
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} data; |
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}; |
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/* usage statistics */ |
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struct snd_seq_usage { |
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int cur; |
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int peak; |
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}; |
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int client_init_data(void); |
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int snd_sequencer_device_init(void); |
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void snd_sequencer_device_done(void); |
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/* get locked pointer to client */ |
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struct snd_seq_client *snd_seq_client_use_ptr(int clientid); |
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/* unlock pointer to client */ |
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#define snd_seq_client_unlock(client) snd_use_lock_free(&(client)->use_lock) |
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/* dispatch event to client(s) */ |
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int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, int atomic, int hop); |
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int snd_seq_kernel_client_write_poll(int clientid, struct file *file, poll_table *wait); |
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int snd_seq_client_notify_subscription(int client, int port, |
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struct snd_seq_port_subscribe *info, int evtype); |
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/* only for OSS sequencer */ |
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bool snd_seq_client_ioctl_lock(int clientid); |
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void snd_seq_client_ioctl_unlock(int clientid); |
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extern int seq_client_load[15]; |
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#endif
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