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wangrong

2025-01-23 02819b5c047bb354b0ef2374e7c6a6ac4bbd5bba

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#include <assert.h> 
#include "vp_rtmp_des_node.h" 
#include "../utils/vp_utils.h" 
 
namespace vp_nodes { 
         
    vp_rtmp_des_node::vp_rtmp_des_node(std::string node_name,  
                                        int channel_index,  
                                        std::string rtmp_url,  
                                        vp_objects::vp_size resolution_w_h,  
                                        int bitrate, 
                                        bool osd, 
                                        std::string gst_encoder_name): 
                                        vp_des_node(node_name, channel_index), 
                                        rtmp_url(rtmp_url), 
                                        resolution_w_h(resolution_w_h), 
                                        bitrate(bitrate), 
                                        osd(osd), 
                                        gst_encoder_name(gst_encoder_name) { 
        // append channel_index to the end of rtmp_url. 
        // if original rtmp_url is rtmp://192.168.77.105/live/10000 and channel_index is 10 
        // then the modified rtmp_url is rtmp://192.168.77.105/live/10000_10 
        this->rtmp_url = this->rtmp_url + "_" + std::to_string(channel_index); 
        this->gst_template = vp_utils::string_format(this->gst_template, gst_encoder_name.c_str(), bitrate, this->rtmp_url.c_str()); 
        VP_INFO(vp_utils::string_format("[%s] [%s]", node_name.c_str(), gst_template.c_str())); 
        this->initialized(); 
    } 
     
    vp_rtmp_des_node::~vp_rtmp_des_node() { 
        deinitialized();         
    } 
 
    // re-implementation, return nullptr. 
    std::shared_ptr<vp_objects::vp_meta>  
        vp_rtmp_des_node::handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta) { 
            VP_DEBUG(vp_utils::string_format("[%s] received frame meta, channel_index=>%d, frame_index=>%d", node_name.c_str(), meta->channel_index, meta->frame_index)); 
             
            cv::Mat resize_frame; 
            if (this->resolution_w_h.width != 0 && this->resolution_w_h.height != 0) {                  
                cv::resize((osd && !meta->osd_frame.empty()) ? meta->osd_frame : meta->frame, resize_frame, cv::Size(resolution_w_h.width, resolution_w_h.height)); 
            } 
            else { 
                resize_frame = (osd && !meta->osd_frame.empty()) ? meta->osd_frame : meta->frame; 
            } 
 
            if (!rtmp_writer.isOpened()) { 
                assert(rtmp_writer.open(this->gst_template, cv::CAP_GSTREAMER, 0, meta->fps, {resize_frame.cols, resize_frame.rows})); 
            } 
 
            rtmp_writer.write(resize_frame); 
 
            // for general works defined in base class 
            return vp_des_node::handle_frame_meta(meta); 
    } 
 
    // re-implementation, return nullptr. 
    std::shared_ptr<vp_objects::vp_meta>  
        vp_rtmp_des_node::handle_control_meta(std::shared_ptr<vp_objects::vp_control_meta> meta) { 
            // for general works defined in base class 
            return vp_des_node::handle_control_meta(meta); 
    } 
 
    std::string vp_rtmp_des_node::to_string() { 
        // just return rtmp url 
        return rtmp_url; 
    } 
}