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#pragma once
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#include <opencv2/freetype.hpp>
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#include "../vp_node.h"
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/*
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* ################################
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* why need osd in our pipeline?
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* ################################
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* there are several reasons why we need osd,
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* 1. we need debug, for the outputs of infer, tracker and ba, displaying is more straightforward than printing.
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* 2. in some situations like cast screen, it is a functional requirement that we need display what we have done on screen to show what we can do to others who do not know about our product.
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*
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* drawing the targets on current frame is the most common operation for osd.
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*/
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namespace vp_nodes {
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// config for vp_osd_node, define how to draw
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typedef struct vp_osd_node_option
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{
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int aaa = 0;
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} vp_osd_option;
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// on screen display(short as osd) node.
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// mainly used to display vp_frame_target on frame.
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class vp_osd_node: public vp_node {
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private:
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// support chinese font
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cv::Ptr<cv::freetype::FreeType2> ft2;
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protected:
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virtual std::shared_ptr<vp_objects::vp_meta> handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta) override;
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virtual std::shared_ptr<vp_objects::vp_meta> handle_control_meta(std::shared_ptr<vp_objects::vp_control_meta> meta) override;
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public:
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vp_osd_node(std::string node_name, std::string font = "");
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~vp_osd_node();
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};
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}
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