amixer: info: Add handling of a new components string

Changes added to kernel [1] and alsa-lib [2] allow usage of an extended
components string, amend amixer to allow display of the new string.

[1] https://lore.kernel.org/all/20260122111249.67319-1-mstrozek@opensource.cirrus.com/
[2] alsa-project/alsa-lib#494
Signed-off-by: Maciej Strozek <mstrozek@opensource.cirrus.com>

Author: mstrozek

alsactl/info.c

@@ -193,10 +193,12 @@ static int hwdep_device_list(snd_ctl_t *ctl)
 static int card_info(snd_ctl_t *ctl)
 {
 	snd_ctl_card_info_t *info;
+	snd_ctl_card_components_t *components;
 	snd_ctl_elem_list_t *clist;
 	int err;
 
 	snd_ctl_card_info_alloca(&info);
+	snd_ctl_card_components_alloca(&components);
 	snd_ctl_elem_list_alloca(&clist);
 
 	if ((err = snd_ctl_card_info(ctl, info)) < 0) {
@@ -211,7 +213,10 @@ static int card_info(snd_ctl_t *ctl)
 		snd_ctl_card_info_get_longname(info));
 	printf("  driver_name: %s\n", snd_ctl_card_info_get_driver(info));
 	printf("  mixer_name: %s\n", snd_ctl_card_info_get_mixername(info));
-	printf("  components: %s\n", snd_ctl_card_info_get_components(info));
+	if (snd_ctl_card_components(ctl, components) >= 0)
+		printf("  components: %s\n", snd_ctl_card_components_get_string(components));
+	else
+		printf("  components: %s\n", snd_ctl_card_info_get_components(info));
 	if ((err = snd_ctl_elem_list(ctl, clist)) < 0) {
 		error("snd_ctl_elem_list failure: %s", snd_strerror(err));
 	} else {

amixer/amixer.c

@@ -94,8 +94,10 @@ static int info(void)
 	snd_ctl_t *handle;
 	snd_mixer_t *mhandle;
 	snd_ctl_card_info_t *info;
+	snd_ctl_card_components_t *components;
 	snd_ctl_elem_list_t *clist;
 	snd_ctl_card_info_alloca(&info);
+	snd_ctl_card_components_alloca(&components);
 	snd_ctl_elem_list_alloca(&clist);
 
 	if ((err = snd_ctl_open(&handle, card, 0)) < 0) {
@@ -110,7 +112,10 @@ static int info(void)
 	printf("Card %s '%s'/'%s'\n", card, snd_ctl_card_info_get_id(info),
 	       snd_ctl_card_info_get_longname(info));
 	printf("  Mixer name	: '%s'\n", snd_ctl_card_info_get_mixername(info));
-	printf("  Components	: '%s'\n", snd_ctl_card_info_get_components(info));
+	if (snd_ctl_card_components(handle, components) >= 0)
+		printf("  Components	: '%s'\n", snd_ctl_card_components_get_string(components));
+	else
+		printf("  Components	: '%s'\n", snd_ctl_card_info_get_components(info));
 	if ((err = snd_ctl_elem_list(handle, clist)) < 0) {
 		error("snd_ctl_elem_list failure: %s", snd_strerror(err));
 	} else {