/** * \file include/conf.h * \brief Application interface library for the ALSA driver * \author Jaroslav Kysela <[email protected]> * \author Abramo Bagnara <[email protected]> * \author Takashi Iwai <[email protected]> * \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 * The configuration functions and types allow you to read, enumerate, * modify and write the contents of ALSA configuration files. * \{ */ /** \brief \c dlsym version for the config evaluate callback. */ #define SND_CONFIG_DLSYM_VERSION_EVALUATE … /** \brief \c dlsym version for the config hook callback. */ #define SND_CONFIG_DLSYM_VERSION_HOOK … /** \brief Configuration node type. */ snd_config_type_t; /** * \brief Internal structure for a configuration node object. * * The ALSA library uses a pointer to this structure as a handle to a * configuration node. Applications don't access its contents directly. */ snd_config_t; /** * \brief Type for a configuration compound iterator. * * The ALSA library uses this pointer type as a handle to a configuration * compound iterator. Applications don't directly access the contents of * the structure pointed to by this type. */ snd_config_iterator_t; /** * \brief Internal structure for a configuration private update object. * * The ALSA library uses this structure to save private update information. */ 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_update_ref(snd_config_t **top); void snd_config_ref(snd_config_t *top); void snd_config_unref(snd_config_t *top); 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_integer64(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_integer64(snd_config_t **config, const char *key, const long 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_safe_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_integer64(snd_config_t *config, long 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_integer64(const snd_config_t *config, long 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); snd_config_iterator_t snd_config_iterator_first(const snd_config_t *node); snd_config_iterator_t snd_config_iterator_next(const snd_config_iterator_t iterator); 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); /** * \brief Helper macro to iterate over the children of a compound node. * \param[in,out] pos Iterator variable for the current node. * \param[in,out] next Temporary iterator variable for the next node. * \param[in] node Handle to the compound configuration node to iterate over. * * Use this macro like a \c for statement, e.g.: * \code * snd_config_iterator_t pos, next; * snd_config_for_each(pos, next, node) { * snd_config_t *entry = snd_config_iterator_entry(pos); * ... * } * \endcode * * This macro allows deleting or removing the current node. */ #define snd_config_for_each(pos, next, node) … /* 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); /* Names functions */ /** * Device-name list element */ snd_devname_t; /** * Device-name list element (definition) */ struct snd_devname { … }; int snd_names_list(const char *iface, snd_devname_t **list); void snd_names_list_free(snd_devname_t *list); /** \} */ #ifdef __cplusplus } #endif #endif /* __ALSA_CONF_H */
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