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ucm: implement MacroDefine and Macro subtree evaluation

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The arguments are set as temporary variables as /MACRO_NAME/_/ARGUMENT_NAME/.

Example:

  # define new macro MyMacro with arguments ctl_name and ctl_value
  DefineMacro.MyMacro {
    BootSequence [
      cset "name='${var:MyMacro_ctl_name}' ${var:MyMacro_ctl_value}"
    ]
  }

  # instantiate macro for Speaker control (short version)
  Macro.headphone.MyMacro "ctl_name='Speaker Switch',ctl_value=off"

  # instantiate macro for Mic control (second version)
  Macro.mic.MyMacro {
	ctl_name "Mic Switch"
	ctl_value "off"
  }

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2022-05-13 16:07:38 +02:00
parent 3e5a894378
commit d7d5c724ed
6 changed files with 252 additions and 9 deletions
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31
src/ucm/utils.c
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@ -400,6 +400,14 @@ int uc_mgr_config_load(int format, const char *file, snd_config_t **cfg)
return 0;
}
static void uc_mgr_free_value1(struct ucm_value *val)
{
free(val->name);
free(val->data);
list_del(&val->list);
free(val);
}
void uc_mgr_free_value(struct list_head *base)
{
struct list_head *pos, *npos;
@ -407,10 +415,7 @@ void uc_mgr_free_value(struct list_head *base)
list_for_each_safe(pos, npos, base) {
val = list_entry(pos, struct ucm_value, list);
free(val->name);
free(val->data);
list_del(&val->list);
free(val);
uc_mgr_free_value1(val);
}
}
@ -704,6 +709,22 @@ int uc_mgr_set_variable(snd_use_case_mgr_t *uc_mgr, const char *name,
return 0;
}
int uc_mgr_delete_variable(snd_use_case_mgr_t *uc_mgr, const char *name)
{
struct list_head *pos;
struct ucm_value *curr;
list_for_each(pos, &uc_mgr->variable_list) {
curr = list_entry(pos, struct ucm_value, list);
if (strcmp(curr->name, name) == 0) {
uc_mgr_free_value1(curr);
return 0;
}
}
return -ENOENT;
}
void uc_mgr_free_verb(snd_use_case_mgr_t *uc_mgr)
{
struct list_head *pos, *npos;
@ -745,6 +766,8 @@ void uc_mgr_free(snd_use_case_mgr_t *uc_mgr)
{
if (uc_mgr->local_config)
snd_config_delete(uc_mgr->local_config);
if (uc_mgr->macros)
snd_config_delete(uc_mgr->macros);
uc_mgr_free_verb(uc_mgr);
uc_mgr_free_ctl_list(uc_mgr);
free(uc_mgr->card_name);