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* Main kernel header file for the ALSA sequencer
* Copyright (c) 1999 by Jaroslav Kysela <>
* 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
* 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 "seq_kernel.h"
/* Instrument cluster */
struct snd_seq_kcluster {
snd_seq_instr_cluster_t cluster;
char name[32];
int priority;
struct snd_seq_kcluster *next;
/* return pointer to private data */
#define KINSTR_DATA(kinstr) (void *)(((char *)kinstr) + sizeof(struct snd_seq_kinstr))
/* Instrument structure */
struct snd_seq_kinstr {
struct snd_seq_instr instr;
char name[32];
int type; /* instrument type */
int use; /* use count */
int busy; /* not useable */
int add_len; /* additional length */
struct snd_seq_kinstr_ops *ops; /* operations */
struct snd_seq_kinstr *next;
/* Instrument flags */
#define SNDRV_SEQ_INSTR_FLG_DIRECT (1<<0) /* accept only direct events */
/* List of all instruments */
struct snd_seq_kinstr_list {
struct snd_seq_kinstr *hash[SNDRV_SEQ_INSTR_HASH_SIZE];
int count; /* count of all instruments */
struct snd_seq_kcluster *chash[SNDRV_SEQ_INSTR_HASH_SIZE];
int ccount; /* count of all clusters */
int owner; /* current owner of the instrument list */
unsigned int flags;
spinlock_t lock;
spinlock_t ops_lock;
struct mutex ops_mutex;
unsigned long ops_flags;
struct snd_seq_kinstr_ops {
void *private_data;
long add_len; /* additional length */
char *instr_type;
int (*info)(void *private_data, char *info_data, long len);
int (*put)(void *private_data, struct snd_seq_kinstr *kinstr,
char __user *instr_data, long len, int atomic, int cmd);
int (*get)(void *private_data, struct snd_seq_kinstr *kinstr,
char __user *instr_data, long len, int atomic, int cmd);
int (*get_size)(void *private_data, struct snd_seq_kinstr *kinstr, long *size);
int (*remove)(void *private_data, struct snd_seq_kinstr *kinstr, int atomic);
void (*notify)(void *private_data, struct snd_seq_kinstr *kinstr, int what);
struct snd_seq_kinstr_ops *next;
/* instrument operations */
struct snd_seq_kinstr_list *snd_seq_instr_list_new(void);
void snd_seq_instr_list_free(struct snd_seq_kinstr_list **list);
int snd_seq_instr_list_free_cond(struct snd_seq_kinstr_list *list,
struct snd_seq_instr_header *ifree,
int client,
int atomic);
struct snd_seq_kinstr *snd_seq_instr_find(struct snd_seq_kinstr_list *list,
struct snd_seq_instr *instr,
int exact,
int follow_alias);
void snd_seq_instr_free_use(struct snd_seq_kinstr_list *list,
struct snd_seq_kinstr *instr);
int snd_seq_instr_event(struct snd_seq_kinstr_ops *ops,
struct snd_seq_kinstr_list *list,
struct snd_seq_event *ev,
int client,
int atomic,
int hop);
#endif /* __SOUND_SEQ_INSTR_H */