first commit

nodes/vp_rtmp_des_node.h

@@ -0,0 +1,45 @@
+#pragma once
+
+#include <opencv2/core/core.hpp>
+#include <opencv2/imgproc.hpp>
+#include <opencv2/videoio.hpp>
+#include "vp_des_node.h"
+
+namespace vp_nodes {
+    // rtmp des node, push video stream via rtmp protocal.
+    // example:
+    // rtmp://192.168.77.105/live/10000
+    class vp_rtmp_des_node: public vp_des_node
+    {
+    private:
+        /* data */
+        std::string gst_template = "appsrc ! videoconvert ! %s bitrate=%d ! h264parse ! flvmux ! rtmpsink location=%s";
+        cv::VideoWriter rtmp_writer;
+    protected:
+        // re-implementation, return nullptr.
+        virtual std::shared_ptr<vp_objects::vp_meta> handle_frame_meta(std::shared_ptr<vp_objects::vp_frame_meta> meta) override; 
+        // re-implementation, return nullptr.
+        virtual std::shared_ptr<vp_objects::vp_meta> handle_control_meta(std::shared_ptr<vp_objects::vp_control_meta> meta) override;
+    public:
+        vp_rtmp_des_node(std::string node_name, 
+                        int channel_index, 
+                        std::string rtmp_url, 
+                        vp_objects::vp_size resolution_w_h = {}, 
+                        int bitrate = 1024,
+                        bool osd = true,
+                        std::string gst_encoder_name = "x264enc");
+        ~vp_rtmp_des_node();
+
+        virtual std::string to_string() override;
+        
+        std::string rtmp_url;
+        // resolution for rtmp stream
+        vp_objects::vp_size resolution_w_h;
+        int bitrate;
+
+        // for osd frame 
+        bool osd;
+        // set x264enc as the default encoder, we can use hardware encoder instead.
+        std::string gst_encoder_name = "x264enc";
+    };
+}