3 * \brief Application interface library for the ALSA driver
4 * \author Jaroslav Kysela <perex@suse.cz>
5 * \author Abramo Bagnara <abramo@alsa-project.org>
6 * \author Takashi Iwai <tiwai@suse.de>
9 * Application interface library for the ALSA driver
12 * This library is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU Library General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU Library General Public License for more details.
22 * You should have received a copy of the GNU Library General Public
23 * License along with this library; if not, write to the Free Software
24 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
32 * \defgroup Config Configuration Interface
33 * Configuration Interface
37 /** dlsym version for config evaluate callback */
38 #define SND_CONFIG_DLSYM_VERSION_EVALUATE _dlsym_config_evaluate_001
39 /** dlsym version for config hook callback */
40 #define SND_CONFIG_DLSYM_VERSION_HOOK _dlsym_config_hook_001
42 /** Config node type */
43 typedef enum _snd_config_type {
45 SND_CONFIG_TYPE_INTEGER,
48 /** Character string */
49 SND_CONFIG_TYPE_STRING,
51 SND_CONFIG_TYPE_COMPOUND,
54 /** Config node handle */
55 typedef struct _snd_config snd_config_t;
56 /** Config compound iterator */
57 typedef struct _snd_config_iterator *snd_config_iterator_t;
63 int snd_config_top(snd_config_t **config);
65 int snd_config_load(snd_config_t *config, snd_input_t *in);
66 int snd_config_save(snd_config_t *config, snd_output_t *out);
68 int snd_config_search(snd_config_t *config, const char *key,
69 snd_config_t **result);
70 int snd_config_searchv(snd_config_t *config,
71 snd_config_t **result, ...);
72 int snd_config_search_definition(snd_config_t *config,
73 const char *base, const char *key,
74 snd_config_t **result);
76 int snd_config_expand(snd_config_t *config, snd_config_t *root,
77 const char *args, void *private_data,
78 snd_config_t **result);
79 int snd_config_evaluate(snd_config_t *config, snd_config_t *root,
80 void *private_data, snd_config_t **result);
82 int snd_config_add(snd_config_t *config, snd_config_t *leaf);
83 int snd_config_delete(snd_config_t *config);
84 int snd_config_copy(snd_config_t **dst, snd_config_t *src);
86 int snd_config_make(snd_config_t **config, const char *key,
87 snd_config_type_t type);
88 int snd_config_make_integer(snd_config_t **config, const char *key);
89 int snd_config_make_real(snd_config_t **config, const char *key);
90 int snd_config_make_string(snd_config_t **config, const char *key);
91 int snd_config_make_compound(snd_config_t **config, const char *key, int join);
93 int snd_config_set_id(snd_config_t *config, const char *id);
94 int snd_config_set_integer(snd_config_t *config, long value);
95 int snd_config_set_real(snd_config_t *config, double value);
96 int snd_config_set_string(snd_config_t *config, const char *value);
97 int snd_config_set_ascii(snd_config_t *config, const char *ascii);
98 int snd_config_get_integer(snd_config_t *config, long *value);
99 int snd_config_get_real(snd_config_t *config, double *value);
100 int snd_config_get_string(snd_config_t *config, const char **value);
101 int snd_config_get_ascii(snd_config_t *config, char **value);
103 snd_config_iterator_t snd_config_iterator_first(snd_config_t *node);
104 snd_config_iterator_t snd_config_iterator_next(snd_config_iterator_t iterator);
105 snd_config_iterator_t snd_config_iterator_end(snd_config_t *node);
106 snd_config_t *snd_config_iterator_entry(snd_config_iterator_t iterator);
108 /** Helper for compound config node leaves traversal
109 * \param pos Current node iterator
110 * \param next Next node iterator
111 * \param node Compound config node
113 * This macro is designed to permit the removal of current node.
115 #define snd_config_for_each(pos, next, node) \
116 for (pos = snd_config_iterator_first(node), next = snd_config_iterator_next(pos); pos != snd_config_iterator_end(node); pos = next, next = snd_config_iterator_next(pos))
118 snd_config_type_t snd_config_get_type(snd_config_t *config);
119 const char *snd_config_get_id(snd_config_t *config);
121 extern snd_config_t *snd_config;
122 int snd_config_update(void);
126 int snd_config_get_bool_ascii(const char *ascii);
127 int snd_config_get_bool(snd_config_t *conf);
128 int snd_config_get_ctl_iface_ascii(const char *ascii);
129 int snd_config_get_ctl_iface(snd_config_t *conf);
137 #endif /* __ALSA_CONF_H */