libobs: Add obs_source_set_default_flags

This allows sources to set default flags on creation without interfering
with user set flags

libobs/obs-internal.h

@@ -281,6 +281,7 @@ struct obs_source {
 
 	/* general exposed flags that can be set for the source */
 	uint32_t                        flags;
+	uint32_t                        default_flags;
 
 	/* indicates ownership of the info.id buffer */
 	bool                            owns_info_id;

libobs/obs-source.c

@@ -191,6 +191,8 @@ obs_source_t *obs_source_create(enum obs_source_type type, const char *id,
 	blog(LOG_INFO, "source '%s' (%s) created", name, id);
 	obs_source_dosignal(source, "source_create", NULL);
 
+	source->flags = source->default_flags;
+
 	if (info && info->type == OBS_SOURCE_TYPE_TRANSITION)
 		os_atomic_inc_long(&obs->data.active_transitions);
 	return source;
@@ -2091,6 +2093,13 @@ void obs_source_set_flags(obs_source_t *source, uint32_t flags)
 	}
 }
 
+void obs_source_set_default_flags(obs_source_t *source, uint32_t flags)
+{
+	if (!source) return;
+
+	source->default_flags = flags;
+}
+
 uint32_t obs_source_get_flags(const obs_source_t *source)
 {
 	return source ? source->flags : 0;

libobs/obs.c

@@ -1233,6 +1233,7 @@ obs_source_t *obs_load_source(obs_data_t *source_data)
 	sync = obs_data_get_int(source_data, "sync");
 	obs_source_set_sync_offset(source, sync);
 
+	obs_data_set_default_int(source_data, "flags", source->default_flags);
 	flags = (uint32_t)obs_data_get_int(source_data, "flags");
 	obs_source_set_flags(source, flags);
 

libobs/obs.h

@@ -862,6 +862,9 @@ EXPORT void obs_source_send_focus(obs_source_t *source, bool focus);
 EXPORT void obs_source_send_key_click(obs_source_t *source,
 		const struct obs_key_event *event, bool key_up);
 
+/** Sets the default source flags. */
+EXPORT void obs_source_set_default_flags(obs_source_t *source, uint32_t flags);
+
 
 /* ------------------------------------------------------------------------- */
 /* Scenes */