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nodes/vp_udp_src_node.h

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+
+
+#include <string>
+#include <opencv2/core/core.hpp>
+#include <opencv2/imgproc.hpp>
+#include <opencv2/videoio.hpp>
+#include "vp_src_node.h"
+
+namespace vp_nodes {
+    // udp source node, receive video stream via udp(rtp) protocal.
+    // example:
+    // udp://127.0.0.1:6000
+    class vp_udp_src_node: public vp_src_node
+    {
+    private:
+        std::string gst_template = "udpsrc port=%d ! application/x-rtp,mdeia=video ! rtph264depay ! h264parse ! %s ! videoconvert ! appsink";
+        cv::VideoCapture udp_capture;
+    protected:
+        // re-implemetation
+        virtual void handle_run() override;
+    public:
+        vp_udp_src_node(std::string node_name, 
+                        int channel_index, 
+                        int port, 
+                        float resize_ratio = 1.0,
+                        std::string gst_decoder_name = "avdec_h264",
+                        int skip_interval = 0);
+        ~vp_udp_src_node();
+
+        virtual std::string to_string() override;
+
+        // port to listen
+        int port;
+        // set avdec_h264 as the default decoder, we can use hardware decoder instead.
+        std::string gst_decoder_name = "avdec_h264";
+        // 0 means no skip
+        int skip_interval = 0;
+    };
+}