/** * \file * \brief Application interface library for the ALSA driver * \author Jaroslav Kysela * \author Abramo Bagnara * \author Takashi Iwai * \date 1998-2001 * * Application interface library for the ALSA driver * * * This library is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #ifndef __ALSA_CONF_H #define __ALSA_CONF_H #ifdef __cplusplus extern "C" { #endif /** * \defgroup Config Configuration Interface * Configuration Interface * \{ */ /** dlsym version for config evaluate callback */ #define SND_CONFIG_DLSYM_VERSION_EVALUATE _dlsym_config_evaluate_001 /** dlsym version for config hook callback */ #define SND_CONFIG_DLSYM_VERSION_HOOK _dlsym_config_hook_001 /** Config node type */ typedef enum _snd_config_type { /** Integer number */ SND_CONFIG_TYPE_INTEGER, /** Real number */ SND_CONFIG_TYPE_REAL, /** Character string */ SND_CONFIG_TYPE_STRING, /** Pointer - runtime only - cannot be saved */ SND_CONFIG_TYPE_POINTER, /** Compound */ SND_CONFIG_TYPE_COMPOUND = 1024, } snd_config_type_t; /** Config node handle */ typedef struct _snd_config snd_config_t; /** Config compound iterator */ typedef struct _snd_config_iterator *snd_config_iterator_t; /** Config private update structure */ typedef struct _snd_config_update snd_config_update_t; extern snd_config_t *snd_config; int snd_config_top(snd_config_t **config); int snd_config_load(snd_config_t *config, snd_input_t *in); int snd_config_load_override(snd_config_t *config, snd_input_t *in); int snd_config_save(snd_config_t *config, snd_output_t *out); int snd_config_update(void); int snd_config_update_r(snd_config_t **top, snd_config_update_t **update, const char *path); int snd_config_update_free(snd_config_update_t *update); int snd_config_update_free_global(void); int snd_config_search(snd_config_t *config, const char *key, snd_config_t **result); int snd_config_searchv(snd_config_t *config, snd_config_t **result, ...); int snd_config_search_definition(snd_config_t *config, const char *base, const char *key, snd_config_t **result); int snd_config_expand(snd_config_t *config, snd_config_t *root, const char *args, snd_config_t *private_data, snd_config_t **result); int snd_config_evaluate(snd_config_t *config, snd_config_t *root, snd_config_t *private_data, snd_config_t **result); int snd_config_add(snd_config_t *config, snd_config_t *leaf); int snd_config_delete(snd_config_t *config); int snd_config_delete_compound_members(const snd_config_t *config); int snd_config_copy(snd_config_t **dst, snd_config_t *src); int snd_config_make(snd_config_t **config, const char *key, snd_config_type_t type); int snd_config_make_integer(snd_config_t **config, const char *key); int snd_config_make_real(snd_config_t **config, const char *key); int snd_config_make_string(snd_config_t **config, const char *key); int snd_config_make_pointer(snd_config_t **config, const char *key); int snd_config_make_compound(snd_config_t **config, const char *key, int join); int snd_config_imake_integer(snd_config_t **config, const char *key, const long value); int snd_config_imake_real(snd_config_t **config, const char *key, const double value); int snd_config_imake_string(snd_config_t **config, const char *key, const char *ascii); int snd_config_imake_pointer(snd_config_t **config, const char *key, const void *ptr); snd_config_type_t snd_config_get_type(const snd_config_t *config); int snd_config_set_id(snd_config_t *config, const char *id); int snd_config_set_integer(snd_config_t *config, long value); int snd_config_set_real(snd_config_t *config, double value); int snd_config_set_string(snd_config_t *config, const char *value); int snd_config_set_ascii(snd_config_t *config, const char *ascii); int snd_config_set_pointer(snd_config_t *config, const void *ptr); int snd_config_get_id(const snd_config_t *config, const char **value); int snd_config_get_integer(const snd_config_t *config, long *value); int snd_config_get_real(const snd_config_t *config, double *value); int snd_config_get_ireal(const snd_config_t *config, double *value); int snd_config_get_string(const snd_config_t *config, const char **value); int snd_config_get_ascii(const snd_config_t *config, char **value); int snd_config_get_pointer(const snd_config_t *config, const void **value); int snd_config_test_id(const snd_config_t *config, const char *id); const snd_config_iterator_t snd_config_iterator_first(const snd_config_t *node); const snd_config_iterator_t snd_config_iterator_next(const snd_config_iterator_t iterator); const snd_config_iterator_t snd_config_iterator_end(const snd_config_t *node); snd_config_t *snd_config_iterator_entry(const snd_config_iterator_t iterator); /** Helper for compound config node leaves traversal * \param pos Current node iterator * \param next Next node iterator * \param node Compound config node * * This macro is designed to permit the removal of current node. */ #define snd_config_for_each(pos, next, node) \ 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)) /* Misc functions */ int snd_config_get_bool_ascii(const char *ascii); int snd_config_get_bool(const snd_config_t *conf); int snd_config_get_ctl_iface_ascii(const char *ascii); int snd_config_get_ctl_iface(const snd_config_t *conf); /** \} */ #ifdef __cplusplus } #endif #endif /* __ALSA_CONF_H */