diff options
Diffstat (limited to 'include/sound/seq_kernel.h')
| -rw-r--r-- | include/sound/seq_kernel.h | 54 |
1 files changed, 20 insertions, 34 deletions
diff --git a/include/sound/seq_kernel.h b/include/sound/seq_kernel.h index 2398521f0998..00c32eed2124 100644 --- a/include/sound/seq_kernel.h +++ b/include/sound/seq_kernel.h @@ -1,25 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_SEQ_KERNEL_H #define __SOUND_SEQ_KERNEL_H /* * Main kernel header file for the ALSA sequencer * Copyright (c) 1998 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 - * */ #include <linux/time.h> #include <sound/asequencer.h> @@ -27,11 +12,8 @@ typedef struct snd_seq_real_time snd_seq_real_time_t; typedef union snd_seq_timestamp snd_seq_timestamp_t; -/* maximum number of events dequeued per schedule interval */ -#define SNDRV_SEQ_MAX_DEQUEUE 50 - /* maximum number of queues */ -#define SNDRV_SEQ_MAX_QUEUES 8 +#define SNDRV_SEQ_MAX_QUEUES 32 /* max number of concurrent clients */ #define SNDRV_SEQ_MAX_CLIENTS 192 @@ -42,9 +24,6 @@ typedef union snd_seq_timestamp snd_seq_timestamp_t; /* max number of events in memory pool */ #define SNDRV_SEQ_MAX_EVENTS 2000 -/* default number of events in memory chunk */ -#define SNDRV_SEQ_DEFAULT_CHUNK_EVENTS 64 - /* default number of events in memory pool */ #define SNDRV_SEQ_DEFAULT_EVENTS 500 @@ -55,7 +34,8 @@ typedef union snd_seq_timestamp snd_seq_timestamp_t; #define SNDRV_SEQ_DEFAULT_CLIENT_EVENTS 200 /* max delivery path length */ -#define SNDRV_SEQ_MAX_HOPS 10 +/* NOTE: this shouldn't be greater than MAX_LOCKDEP_SUBCLASSES */ +#define SNDRV_SEQ_MAX_HOPS 8 /* max size of event size */ #define SNDRV_SEQ_MAX_EVENT_LEN 0x3fffffff @@ -70,7 +50,6 @@ struct snd_seq_port_callback { int (*unuse)(void *private_data, struct snd_seq_port_subscribe *info); int (*event_input)(struct snd_seq_event *ev, int direct, void *private_data, int atomic, int hop); void (*private_free)(void *private_data); - unsigned int callback_all; /* call subscribe callbacks at each connection/disconnection */ /*...*/ }; @@ -79,7 +58,8 @@ __printf(3, 4) int snd_seq_create_kernel_client(struct snd_card *card, int client_index, const char *name_fmt, ...); int snd_seq_delete_kernel_client(int client); -int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, int atomic, int hop); +int snd_seq_kernel_client_enqueue(int client, struct snd_seq_event *ev, + struct file *file, bool blocking); int snd_seq_kernel_client_dispatch(int client, struct snd_seq_event *ev, int atomic, int hop); int snd_seq_kernel_client_ctl(int client, unsigned int cmd, void *arg); @@ -90,27 +70,33 @@ int snd_seq_kernel_client_ctl(int client, unsigned int cmd, void *arg); typedef int (*snd_seq_dump_func_t)(void *ptr, void *buf, int count); int snd_seq_expand_var_event(const struct snd_seq_event *event, int count, char *buf, int in_kernel, int size_aligned); +int snd_seq_expand_var_event_at(const struct snd_seq_event *event, int count, + char *buf, int offset); int snd_seq_dump_var_event(const struct snd_seq_event *event, snd_seq_dump_func_t func, void *private_data); +/* size of the event packet; it can be greater than snd_seq_event size */ +static inline size_t snd_seq_event_packet_size(struct snd_seq_event *ev) +{ + if (snd_seq_ev_is_ump(ev)) + return sizeof(struct snd_seq_ump_event); + return sizeof(struct snd_seq_event); +} + /* interface for OSS emulation */ int snd_seq_set_queue_tempo(int client, struct snd_seq_queue_tempo *tempo); -/* port callback routines */ -void snd_port_init_callback(struct snd_seq_port_callback *p); -struct snd_seq_port_callback *snd_port_alloc_callback(void); - /* port attach/detach */ int snd_seq_event_port_attach(int client, struct snd_seq_port_callback *pcbp, int cap, int type, int midi_channels, int midi_voices, char *portname); int snd_seq_event_port_detach(int client, int port); #ifdef CONFIG_MODULES -void snd_seq_autoload_lock(void); -void snd_seq_autoload_unlock(void); +void snd_seq_autoload_init(void); +void snd_seq_autoload_exit(void); #else -#define snd_seq_autoload_lock() -#define snd_seq_autoload_unlock() +#define snd_seq_autoload_init() +#define snd_seq_autoload_exit() #endif #endif /* __SOUND_SEQ_KERNEL_H */ |