diff options
Diffstat (limited to 'include/sound/seq_instr.h')
| -rw-r--r-- | include/sound/seq_instr.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/include/sound/seq_instr.h b/include/sound/seq_instr.h new file mode 100644 index 000000000000..1a654df4aa97 --- /dev/null +++ b/include/sound/seq_instr.h @@ -0,0 +1,112 @@ +#ifndef __SOUND_SEQ_INSTR_H +#define __SOUND_SEQ_INSTR_H + +/* + * Main kernel header file for the ALSA sequencer + * Copyright (c) 1999 by Jaroslav Kysela <perex@suse.cz> + * + * + * 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 "seq_kernel.h" + +/* Instrument cluster */ +typedef struct _snd_seq_kcluster { + snd_seq_instr_cluster_t cluster; + char name[32]; + int priority; + struct _snd_seq_kcluster *next; +} snd_seq_kcluster_t; + +/* return pointer to private data */ +#define KINSTR_DATA(kinstr) (void *)(((char *)kinstr) + sizeof(snd_seq_kinstr_t)) + +typedef struct snd_seq_kinstr_ops snd_seq_kinstr_ops_t; + +/* Instrument structure */ +typedef struct _snd_seq_kinstr { + snd_seq_instr_t instr; + char name[32]; + int type; /* instrument type */ + int use; /* use count */ + int busy; /* not useable */ + int add_len; /* additional length */ + snd_seq_kinstr_ops_t *ops; /* operations */ + struct _snd_seq_kinstr *next; +} snd_seq_kinstr_t; + +#define SNDRV_SEQ_INSTR_HASH_SIZE 32 + +/* Instrument flags */ +#define SNDRV_SEQ_INSTR_FLG_DIRECT (1<<0) /* accept only direct events */ + +/* List of all instruments */ +typedef struct { + snd_seq_kinstr_t *hash[SNDRV_SEQ_INSTR_HASH_SIZE]; + int count; /* count of all instruments */ + + snd_seq_kcluster_t *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 semaphore ops_mutex; + unsigned long ops_flags; +} snd_seq_kinstr_list_t; + +#define SNDRV_SEQ_INSTR_NOTIFY_REMOVE 0 +#define SNDRV_SEQ_INSTR_NOTIFY_CHANGE 1 + +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, snd_seq_kinstr_t *kinstr, + char __user *instr_data, long len, int atomic, int cmd); + int (*get)(void *private_data, snd_seq_kinstr_t *kinstr, + char __user *instr_data, long len, int atomic, int cmd); + int (*get_size)(void *private_data, snd_seq_kinstr_t *kinstr, long *size); + int (*remove)(void *private_data, snd_seq_kinstr_t *kinstr, int atomic); + void (*notify)(void *private_data, snd_seq_kinstr_t *kinstr, int what); + struct snd_seq_kinstr_ops *next; +}; + + +/* instrument operations */ +snd_seq_kinstr_list_t *snd_seq_instr_list_new(void); +void snd_seq_instr_list_free(snd_seq_kinstr_list_t **list); +int snd_seq_instr_list_free_cond(snd_seq_kinstr_list_t *list, + snd_seq_instr_header_t *ifree, + int client, + int atomic); +snd_seq_kinstr_t *snd_seq_instr_find(snd_seq_kinstr_list_t *list, + snd_seq_instr_t *instr, + int exact, + int follow_alias); +void snd_seq_instr_free_use(snd_seq_kinstr_list_t *list, + snd_seq_kinstr_t *instr); +int snd_seq_instr_event(snd_seq_kinstr_ops_t *ops, + snd_seq_kinstr_list_t *list, + snd_seq_event_t *ev, + int client, + int atomic, + int hop); + +#endif /* __SOUND_SEQ_INSTR_H */ |