big stream progress

- stream manager (with bare bones ui)
- debug video tap
- toxav progress
- toxav debug ui
- some default devices

src/stream_manager_ui.cpp

@@ -0,0 +1,39 @@
+#include "./stream_manager_ui.hpp"
+
+#include <solanaceae/object_store/object_store.hpp>
+
+#include <imgui/imgui.h>
+
+StreamManagerUI::StreamManagerUI(ObjectStore2& os, StreamManager& sm) : _os(os), _sm(sm) {
+}
+
+void StreamManagerUI::render(void) {
+	if (ImGui::Begin("StreamManagerUI")) {
+		// TODO: node canvas?
+
+		// by fametype ??
+
+		ImGui::SeparatorText("Sources");
+
+		// list sources
+		for (const auto& [oc, ss] : _os.registry().view<Components::StreamSource>().each()) {
+			ImGui::Text("src  %d (%s)[%s]", entt::to_integral(oc), ss.name.c_str(), ss.frame_type_name.c_str());
+		}
+
+		ImGui::SeparatorText("Sinks");
+
+		// list sinks
+		for (const auto& [oc, ss] : _os.registry().view<Components::StreamSink>().each()) {
+			ImGui::Text("sink %d (%s)[%s]", entt::to_integral(oc), ss.name.c_str(), ss.frame_type_name.c_str());
+		}
+
+		ImGui::SeparatorText("Connections");
+
+		// list connections
+		for (const auto& con : _sm._connections) {
+			ImGui::Text("con %d->%d", entt::to_integral(con->src.entity()), entt::to_integral(con->sink.entity()));
+		}
+	}
+	ImGui::End();
+}
+