1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/* snd_utils.h
**
** Copyright (c) 2019, The Linux Foundation. All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above
** copyright notice, this list of conditions and the following
** disclaimer in the documentation and/or other materials provided
** with the distribution.
** * Neither the name of The Linux Foundation nor the names of its
** contributors may be used to endorse or promote products derived
** from this software without specific prior written permission.
**
** THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
** WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
** ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
** BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
** CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
** SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
** BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
** OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
** IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**/
#ifndef __SND_CARD_UTILS_H__
#define __SND_CARD_UTILS_H__
#include <dlfcn.h>
struct snd_node {
void *card_node;
void *dev_node;
void *dl_hdl;
void* (*get_card) (unsigned int card);
void (*put_card) (void *card);
void* (*get_node) (void *card, unsigned int id,
int type);
int (*get_int) (void *node, const char *prop, int *val);
int (*get_str) (void *node, const char *prop, char **val);
};
enum {
NODE_PCM,
NODE_MIXER,
};
enum snd_node_type {
SND_NODE_TYPE_HW = 0,
SND_NODE_TYPE_PLUGIN,
SND_NODE_TYPE_INVALID,
};
struct snd_node *snd_utils_get_dev_node(unsigned int card,
unsigned int device, int dev_type);
void snd_utils_put_dev_node(struct snd_node *node);
enum snd_node_type snd_utils_get_node_type(struct snd_node *node);
int snd_utils_get_int(struct snd_node *node, const char *prop, int *val);
int snd_utils_get_str(struct snd_node *node, const char *prop, char **val);
#endif /* end of __SND_CARD_UTILS_H__ */
|
