implement stream default src/sink

src/frame_streams/stream_manager.cpp

@@ -27,7 +27,11 @@ StreamManager::Connection::Connection(
 	}
 }
 
-StreamManager::StreamManager(ObjectStore2& os) : _os(os) {}
+StreamManager::StreamManager(ObjectStore2& os) : _os(os) {
+	_os.subscribe(this, ObjectStore_Event::object_construct);
+	//_os.subscribe(this, ObjectStore_Event::object_update);
+	_os.subscribe(this, ObjectStore_Event::object_destroy);
+}
 
 StreamManager::~StreamManager(void) {
 	// stop all connetions
@@ -137,3 +141,66 @@ float StreamManager::tick(float) {
 	return 2.f; // TODO: 2sec makes mainthread connections unusable
 }
 
+bool StreamManager::onEvent(const ObjectStore::Events::ObjectConstruct& e) {
+	if (!e.e.any_of<Components::StreamSink, Components::StreamSource>()) {
+		return false;
+	}
+
+	// update default targets
+	if (e.e.all_of<Components::TagDefaultTarget>()) {
+		if (e.e.all_of<Components::StreamSource>()) {
+			_default_sources[e.e.get<Components::StreamSource>().frame_type_name] = e.e;
+		} else { // sink
+			_default_sinks[e.e.get<Components::StreamSink>().frame_type_name] = e.e;
+		}
+	}
+
+	// connect to default
+	// only ever do this on new objects
+	if (e.e.all_of<Components::TagConnectToDefault>()) {
+		if (e.e.all_of<Components::StreamSource>()) {
+			auto it_d_sink = _default_sinks.find(e.e.get<Components::StreamSource>().frame_type_name);
+			if (it_d_sink != _default_sinks.cend()) {
+				// TODO: threaded
+				connect(e.e, it_d_sink->second);
+			}
+		} else { // sink
+			auto it_d_src = _default_sources.find(e.e.get<Components::StreamSink>().frame_type_name);
+			if (it_d_src != _default_sources.cend()) {
+				// TODO: threaded
+				connect(e.e, it_d_src->second);
+			}
+		}
+	}
+
+	return false;
+}
+
+bool StreamManager::onEvent(const ObjectStore::Events::ObjectUpdate&) {
+	// what do we do here?
+	return false;
+}
+
+bool StreamManager::onEvent(const ObjectStore::Events::ObjectDestory& e) {
+	// typeless
+	for (auto it = _default_sources.cbegin(); it != _default_sources.cend();) {
+		if (it->second == e.e) {
+			it = _default_sources.erase(it);
+		} else {
+			it++;
+		}
+	}
+	for (auto it = _default_sinks.cbegin(); it != _default_sinks.cend();) {
+		if (it->second == e.e) {
+			it = _default_sinks.erase(it);
+		} else {
+			it++;
+		}
+	}
+
+	// TODO: destroy connections
+	// TODO: auto reconnect default following devices if another default exists
+
+	return false;
+}
+