mirrors/alsa-lib
1
0
Fork 0
mirror of https://github.com/alsa-project/alsa-lib.git synced 2025-10-29 05:40:25 -04:00
Code Issues Projects Releases Packages Wiki Activity Actions

ucm: add If condition block

Browse source 
The syntax is simple:

If./any-if-identificator/ {
  Condition {
    Type /type_here/
    /optional defines/
  }
  True {
    /block used when condition is evaluated as true/
  }
  False {
    /block used when condition is evaluated as false/
  }
}

The Type "ControlExists" is implemented:

Condition {
  Type ControlExists
  Device "hw:${CardId}"
  Control "iface=CARD,name='Headphone Jack'"
}

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2019-11-05 13:02:41 +01:00
parent b9b2247943
commit 8a36e38dc4
8 changed files with 536 additions and 162 deletions
Download patch file Download diff file Expand all files Collapse all files

20
include/conf.h
View file

@ -115,6 +115,7 @@ 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_remove(snd_config_t *config);
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);
@ -179,6 +180,25 @@ snd_config_t *snd_config_iterator_entry(const snd_config_iterator_t iterator);
#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))
/**
* \brief Helper macro to iterate over the children of a compound node.
* \param[in,out] pos Iterator variable for the current 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;
* snd_config_for_each(pos, node) {
* snd_config_t *entry = snd_config_iterator_entry(pos);
* ...
* }
* \endcode
*
* This macro does not allow deleting or removing the current node.
*/
#define snd_config_for_each_unsafe(pos, node) \
for (pos = snd_config_iterator_first(node); pos != snd_config_iterator_end(node); pos = snd_config_iterator_next(pos))
/* Misc functions */
int snd_config_get_bool_ascii(const char *ascii);