add samples

wangrong

2025-03-19 291afb9c81aae1d15d9e3edcea618d0a2e1fc5a6

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#include "vp_json_console_broker_node.h" 
 
namespace vp_nodes { 
         
    vp_json_console_broker_node::vp_json_console_broker_node(std::string node_name,  
                                                            vp_broke_for broke_for,  
                                                            int broking_cache_warn_threshold,  
                                                            int broking_cache_ignore_threshold): 
                                                            vp_msg_broker_node(node_name, broke_for, broking_cache_warn_threshold, broking_cache_ignore_threshold) { 
        this->initialized(); 
    } 
     
    vp_json_console_broker_node::~vp_json_console_broker_node() { 
        deinitialized(); 
        stop_broking(); 
    } 
     
    void vp_json_console_broker_node::format_msg(const std::shared_ptr<vp_objects::vp_frame_meta>& meta, std::string& msg) { 
        // serialize objects to json by cereal 
        std::stringstream msg_stream; 
        { 
            cereal::JSONOutputArchive json_archive(msg_stream); 
             
            // global values 
            json_archive(cereal::make_nvp("channel_index", meta->channel_index), 
            cereal::make_nvp("frame_index", meta->frame_index), 
            cereal::make_nvp("width", meta->frame.cols), 
            cereal::make_nvp("height", meta->frame.rows), 
            cereal::make_nvp("fps", meta->fps), 
            cereal::make_nvp("broke_for", broke_fors.at(broke_for))); 
 
            // serialize values according to broke_for 
            if (broke_for == vp_broke_for::NORMAL) { 
                json_archive(cereal::make_nvp("target_size", meta->targets.size()),  
                            cereal::make_nvp("targets", meta->targets)); 
            } 
            else if (broke_for ==  vp_broke_for::FACE) { 
                json_archive(cereal::make_nvp("face_target_size", meta->face_targets.size()), 
                            cereal::make_nvp("face_targets", meta->face_targets)); 
            } 
            else if (broke_for == vp_broke_for::TEXT) { 
                json_archive(cereal::make_nvp("text_target_size", meta->text_targets.size()), 
                            cereal::make_nvp("text_targets", meta->text_targets)); 
            } 
            else { 
                throw "invalid broke_for!"; 
            } 
        } // flush 
 
        msg = msg_stream.str(); 
    } 
 
    void vp_json_console_broker_node::broke_msg(const std::string& msg) { 
        // broke msg to console by std::cout 
        std::cout << msg << std::endl; 
    } 
}