Add optional original, annotated and JSON frame outputs

include/camera_pipeline.hpp

@@ -1,12 +1,14 @@
 #pragma once
 #include "camera.hpp"
 #include "frame_result.hpp"
+#include "output_writer.hpp"
 #include <filesystem>
 #include <memory>
 
 namespace cms {
 struct PipelineConfig {
     CameraConfig camera;
+    OutputOptions output;
     std::filesystem::path engines,door_mask;
     double detector_confidence{0.30};
     int max_people{3};

include/output_writer.hpp

@@ -0,0 +1,20 @@
+#pragma once
+#include "frame_result.hpp"
+#include <filesystem>
+#include <string>
+namespace cms {
+struct OutputOptions {
+    bool original{},annotated{},results{};
+    std::filesystem::path directory;
+    bool enabled() const {return original||annotated||results;}
+};
+// Called by the inference worker; one matching filename stem per completed frame.
+class OutputWriter {
+public:
+    explicit OutputWriter(OutputOptions options);
+    void write(FrameResult const& result);
+private:
+    OutputOptions options_;
+    std::string runId_;
+};
+}

include/serialization.hpp

@@ -0,0 +1,4 @@
+#pragma once
+#include "frame_result.hpp"
+#include "door_risk.hpp"
+namespace cms { Json serializeResult(FrameResult const& result); }