first commit

nodes/vp_app_des_node.cpp

@@ -0,0 +1,43 @@
+
+#include "vp_app_des_node.h"
+
+namespace vp_nodes {
+        
+    vp_app_des_node::vp_app_des_node(std::string node_name, 
+                                        int channel_index): 
+                                        vp_des_node(node_name, channel_index) {
+        this->initialized();
+    }
+    
+    vp_app_des_node::~vp_app_des_node() {
+        deinitialized();
+    }
+    
+    // re-implementation, return nullptr.
+    std::shared_ptr<vp_objects::vp_meta> 
+        vp_app_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));
+
+            invoke_app_des_result_hooker(meta);
+
+            // 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_app_des_node::handle_control_meta(std::shared_ptr<vp_objects::vp_control_meta> meta) {
+            invoke_app_des_result_hooker(meta);
+            return vp_des_node::handle_control_meta(meta);
+    }
+
+    void vp_app_des_node::set_app_des_result_hooker(vp_app_des_result_hooker app_des_result_hooker) {
+        this->app_des_result_hooker = app_des_result_hooker;
+    }
+
+    void vp_app_des_node::invoke_app_des_result_hooker(std::shared_ptr<vp_objects::vp_meta> meta) {
+        if (app_des_result_hooker) {
+            app_des_result_hooker(node_name, meta);
+        }
+    }
+}