first commit

nodes/osd/vp_face_osd_node.h

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+#pragma once
+
+#include "../vp_node.h"
+
+namespace vp_nodes {
+    // on screen display(short as osd) node.
+    // mainly used to display vp_frame_face_target on frame.
+    class vp_face_osd_node: public vp_node
+    {
+    private:
+        /* data */
+    protected:
+        virtual std::shared_ptr<vp_objects::vp_meta> handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta) override;
+        virtual std::shared_ptr<vp_objects::vp_meta> handle_control_meta(std::shared_ptr<vp_objects::vp_control_meta> meta) override;
+    public:
+        vp_face_osd_node(std::string node_name);
+        ~vp_face_osd_node();
+    };
+
+}