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ucm: add ctl-remove sequence command to delete controls from UCM

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Syntax:

   ctl-remove "name='ABCD'"

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2021-03-29 11:12:28 +02:00
parent 02423dc970
commit 3cfbacdc34
4 changed files with 22 additions and 4 deletions
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15
src/ucm/main.c
View file

@ -418,14 +418,21 @@ static int execute_cset(snd_ctl_t *ctl, const char *cset, unsigned int type)
pos++;
}
if (!*pos) {
uc_error("undefined value for cset >%s<", cset);
if (type != SEQUENCE_ELEMENT_TYPE_CTL_REMOVE) {
uc_error("undefined value for cset >%s<", cset);
err = -EINVAL;
goto __fail;
}
} else if (type == SEQUENCE_ELEMENT_TYPE_CTL_REMOVE) {
uc_error("extra value for ctl-remove >%s<", cset);
err = -EINVAL;
goto __fail;
}
snd_ctl_elem_info_set_id(info, id);
err = snd_ctl_elem_info(ctl, info);
if (type == SEQUENCE_ELEMENT_TYPE_CSET_NEW) {
if (type == SEQUENCE_ELEMENT_TYPE_CSET_NEW ||
type == SEQUENCE_ELEMENT_TYPE_CTL_REMOVE) {
if (err >= 0) {
err = snd_ctl_elem_remove(ctl, id);
if (err < 0) {
@ -434,6 +441,8 @@ static int execute_cset(snd_ctl_t *ctl, const char *cset, unsigned int type)
goto __fail;
}
}
if (type == SEQUENCE_ELEMENT_TYPE_CTL_REMOVE)
goto __ok;
err = __snd_ctl_add_elem_set(ctl, info2, info2->owner, info2->count);
if (err < 0) {
uc_error("unable to create new control");
@ -479,6 +488,7 @@ static int execute_cset(snd_ctl_t *ctl, const char *cset, unsigned int type)
}
}
}
__ok:
err = 0;
__fail:
free(id);
@ -591,6 +601,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
case SEQUENCE_ELEMENT_TYPE_CSET_BIN_FILE:
case SEQUENCE_ELEMENT_TYPE_CSET_TLV:
case SEQUENCE_ELEMENT_TYPE_CSET_NEW:
case SEQUENCE_ELEMENT_TYPE_CTL_REMOVE:
if (cdev == NULL && uc_mgr->in_component_domain) {
/* For sequence of a component device, use
* its parent's cdev stored by ucm manager.