mac-capture: Store in source settings 'default_device_id'

This stores the new 'default_device_id' setting on creation of a
coreaudio output capture.

Signed-off-by: pkv <[email protected]>

Author: pkviet

plugins/mac-capture/mac-audio.c

@@ -839,6 +839,22 @@ static void coreaudio_defaults(obs_data_t *settings)
 	obs_data_set_default_bool(settings, "enable_downmix", true);
 }
 
+static bool coreaudio_peek_default_output_uid(char **out_uid)
+{
+	struct device_list list;
+	memset(&list, 0, sizeof(list));
+
+	coreaudio_enum_devices(&list, false);
+	if (!list.items.num) {
+		device_list_free(&list);
+		return false;
+	}
+
+	*out_uid = bstrdup(list.items.array[0].value.array);
+	device_list_free(&list);
+	return true;
+}
+
 static void *coreaudio_create(obs_data_t *settings, obs_source_t *source, bool input)
 {
 	struct coreaudio_data *ca = bzalloc(sizeof(struct coreaudio_data));
@@ -864,6 +880,15 @@ static void *coreaudio_create(obs_data_t *settings, obs_source_t *source, bool i
 	if (!ca->device_uid)
 		ca->device_uid = bstrdup("default");
 
+	if (!input) {
+		char *def_uid = NULL;
+		if (coreaudio_peek_default_output_uid(&def_uid)) {
+			obs_data_set_string(settings, "default_device_id", def_uid);
+			bfree(def_uid);
+		} else {
+			obs_data_set_string(settings, "default_device_id", NULL);
+		}
+	}
 	coreaudio_try_init(ca);
 	return ca;
 }