Add nested group option

components/rgbd-sources/include/ftl/rgbd/group.hpp

@@ -54,6 +54,14 @@ class Group {
 	 */
 	void addSource(ftl::rgbd::Source *);
 
+	/**
+	 * Add another group to this one. All sources in the other group are made
+	 * available to this group in a synchronised way. There is additional
+	 * overhead in supporting this as additional data copies are required
+	 * internally for all the source frames.
+	 */
+	void addGroup(ftl::rgbd::Group *);
+
 	/**
 	 * Provide a function to be called once per frame with a valid frameset
 	 * at the specified latency. The function may not be called under certain

components/rgbd-sources/src/group.cpp

@@ -100,6 +100,10 @@ void Group::addSource(ftl::rgbd::Source *src) {
 	});
 }
 
+void Group::addGroup(Group *grp) {
+	
+}
+
 void Group::_retrieveJob(ftl::rgbd::Source *src) {
 	try {
 		src->retrieve();