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Linux kernel mirror (for testing)
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kernel
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linux
1#ifndef __SOUND_SEQ_INSTR_H
2#define __SOUND_SEQ_INSTR_H
3
4/*
5 * Main kernel header file for the ALSA sequencer
6 * Copyright (c) 1999 by Jaroslav Kysela <perex@suse.cz>
7 *
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 */
24#include "seq_kernel.h"
25
26/* Instrument cluster */
27typedef struct _snd_seq_kcluster {
28 snd_seq_instr_cluster_t cluster;
29 char name[32];
30 int priority;
31 struct _snd_seq_kcluster *next;
32} snd_seq_kcluster_t;
33
34/* return pointer to private data */
35#define KINSTR_DATA(kinstr) (void *)(((char *)kinstr) + sizeof(snd_seq_kinstr_t))
36
37typedef struct snd_seq_kinstr_ops snd_seq_kinstr_ops_t;
38
39/* Instrument structure */
40typedef struct _snd_seq_kinstr {
41 snd_seq_instr_t instr;
42 char name[32];
43 int type; /* instrument type */
44 int use; /* use count */
45 int busy; /* not useable */
46 int add_len; /* additional length */
47 snd_seq_kinstr_ops_t *ops; /* operations */
48 struct _snd_seq_kinstr *next;
49} snd_seq_kinstr_t;
50
51#define SNDRV_SEQ_INSTR_HASH_SIZE 32
52
53/* Instrument flags */
54#define SNDRV_SEQ_INSTR_FLG_DIRECT (1<<0) /* accept only direct events */
55
56/* List of all instruments */
57typedef struct {
58 snd_seq_kinstr_t *hash[SNDRV_SEQ_INSTR_HASH_SIZE];
59 int count; /* count of all instruments */
60
61 snd_seq_kcluster_t *chash[SNDRV_SEQ_INSTR_HASH_SIZE];
62 int ccount; /* count of all clusters */
63
64 int owner; /* current owner of the instrument list */
65 unsigned int flags;
66
67 spinlock_t lock;
68 spinlock_t ops_lock;
69 struct semaphore ops_mutex;
70 unsigned long ops_flags;
71} snd_seq_kinstr_list_t;
72
73#define SNDRV_SEQ_INSTR_NOTIFY_REMOVE 0
74#define SNDRV_SEQ_INSTR_NOTIFY_CHANGE 1
75
76struct snd_seq_kinstr_ops {
77 void *private_data;
78 long add_len; /* additional length */
79 char *instr_type;
80 int (*info)(void *private_data, char *info_data, long len);
81 int (*put)(void *private_data, snd_seq_kinstr_t *kinstr,
82 char __user *instr_data, long len, int atomic, int cmd);
83 int (*get)(void *private_data, snd_seq_kinstr_t *kinstr,
84 char __user *instr_data, long len, int atomic, int cmd);
85 int (*get_size)(void *private_data, snd_seq_kinstr_t *kinstr, long *size);
86 int (*remove)(void *private_data, snd_seq_kinstr_t *kinstr, int atomic);
87 void (*notify)(void *private_data, snd_seq_kinstr_t *kinstr, int what);
88 struct snd_seq_kinstr_ops *next;
89};
90
91
92/* instrument operations */
93snd_seq_kinstr_list_t *snd_seq_instr_list_new(void);
94void snd_seq_instr_list_free(snd_seq_kinstr_list_t **list);
95int snd_seq_instr_list_free_cond(snd_seq_kinstr_list_t *list,
96 snd_seq_instr_header_t *ifree,
97 int client,
98 int atomic);
99snd_seq_kinstr_t *snd_seq_instr_find(snd_seq_kinstr_list_t *list,
100 snd_seq_instr_t *instr,
101 int exact,
102 int follow_alias);
103void snd_seq_instr_free_use(snd_seq_kinstr_list_t *list,
104 snd_seq_kinstr_t *instr);
105int snd_seq_instr_event(snd_seq_kinstr_ops_t *ops,
106 snd_seq_kinstr_list_t *list,
107 snd_seq_event_t *ev,
108 int client,
109 int atomic,
110 int hop);
111
112#endif /* __SOUND_SEQ_INSTR_H */