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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /sound/core/seq/seq_clientmgr.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'sound/core/seq/seq_clientmgr.h')
-rw-r--r-- | sound/core/seq/seq_clientmgr.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/sound/core/seq/seq_clientmgr.h b/sound/core/seq/seq_clientmgr.h new file mode 100644 index 000000000..8cdd0ee53 --- /dev/null +++ b/sound/core/seq/seq_clientmgr.h @@ -0,0 +1,91 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * ALSA sequencer Client Manager + * Copyright (c) 1998-1999 by Frank van de Pol <fvdpol@coil.demon.nl> + */ +#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 */ + /* ... */ + struct pid *owner; + + /* fifo */ + struct snd_seq_fifo *fifo; /* queue for incoming events */ + int fifo_pool_size; +}; + +struct snd_seq_kernel_client { + /* ... */ + struct snd_card *card; +}; + + +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 mutex ports_mutex; + struct mutex ioctl_mutex; + int convert32; /* convert 32->64bit */ + + /* output pool */ + struct snd_seq_pool *pool; /* memory pool for this client */ + + union { + struct snd_seq_user_client user; + struct snd_seq_kernel_client kernel; + } data; +}; + +/* usage statistics */ +struct snd_seq_usage { + int cur; + int peak; +}; + + +int client_init_data(void); +int snd_sequencer_device_init(void); +void snd_sequencer_device_done(void); + +/* get locked pointer to client */ +struct snd_seq_client *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) */ +int snd_seq_dispatch_event(struct snd_seq_event_cell *cell, 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, + struct snd_seq_port_subscribe *info, int evtype); + +/* only for OSS sequencer */ +bool snd_seq_client_ioctl_lock(int clientid); +void snd_seq_client_ioctl_unlock(int clientid); + +extern int seq_client_load[15]; + +#endif |