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ucm: implement CardIdByName substitution

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The syntax is ${CardIdByName:CARDNAME[#INDEX]}.

The CARDNAME is the ALSA's soundcard name (short form).
The INDEX is the instance (0 = first, 1 = second etc.).

Example: ${CardIdByName:HDA Intel PCH}
(which is identical to ${CardIdByName:HDA Intel PCH#0})

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Jaroslav Kysela 2020-06-03 17:12:19 +02:00
parent f60e0d5fdc
commit eee879d381
6 changed files with 135 additions and 56 deletions
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6
src/ucm/main.c
View file

@ -333,6 +333,7 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
struct sequence_element *s;
char *cdev = NULL;
snd_ctl_t *ctl = NULL;
struct ctl_list *ctl_list;
int err = 0;
list_for_each(pos, seq) {
@ -400,11 +401,12 @@ static int execute_sequence(snd_use_case_mgr_t *uc_mgr,
}
}
if (ctl == NULL) {
err = uc_mgr_open_ctl(uc_mgr, &ctl, cdev);
err = uc_mgr_open_ctl(uc_mgr, &ctl_list, cdev, 1);
if (err < 0) {
uc_error("unable to open ctl device '%s'", cdev);
goto __fail;
}
ctl = ctl_list->ctl;
}
err = execute_cset(ctl, s->data.cset, s->type);
if (err < 0) {
@ -516,7 +518,7 @@ static int add_auto_values(snd_use_case_mgr_t *uc_mgr)
char buf[40];
int err;
ctl_list = uc_mgr_get_one_ctl(uc_mgr);
ctl_list = uc_mgr_get_master_ctl(uc_mgr);
if (ctl_list) {
id = snd_ctl_card_info_get_id(ctl_list->ctl_info);
snprintf(buf, sizeof(buf), "hw:%s", id);