first commit

2026-06-03 12:43:14 +08:00
commit ba76cfae28
608 changed files with 120791 additions and 0 deletions
--- a/nodes/vp_screen_des_node.cpp
+++ b/nodes/vp_screen_des_node.cpp
@@ -0,0 +1,50 @@
+
+#include "vp_screen_des_node.h"
+#include "../utils/vp_utils.h"
+
+namespace vp_nodes {
+    vp_screen_des_node::vp_screen_des_node(std::string node_name, 
+                                            int channel_index, 
+                                            bool osd,
+                                            vp_objects::vp_size display_w_h):
+                                            vp_des_node(node_name, channel_index),
+                                            osd(osd),
+                                            display_w_h(display_w_h) {
+        this->gst_template = vp_utils::string_format(this->gst_template, node_name.c_str());
+        VP_INFO(vp_utils::string_format("[%s] [%s]", node_name.c_str(), gst_template.c_str()));
+        this->initialized();
+    }
+    
+    vp_screen_des_node::~vp_screen_des_node() {
+        deinitialized();
+    }
+
+    // re-implementation, return nullptr.
+    std::shared_ptr<vp_objects::vp_meta> 
+        vp_screen_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->display_w_h.width != 0 && this->display_w_h.height != 0) {                 
+                cv::resize((osd && !meta->osd_frame.empty()) ? meta->osd_frame : meta->frame, resize_frame, cv::Size(display_w_h.width, display_w_h.height));
+            }
+            else {
+                resize_frame = (osd && !meta->osd_frame.empty()) ? meta->osd_frame : meta->frame;
+            }
+
+            if (!screen_writer.isOpened()) {
+                assert(screen_writer.open(this->gst_template, cv::CAP_GSTREAMER, 0, meta->fps, {resize_frame.cols, resize_frame.rows}));
+            }
+            screen_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_screen_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);
+    }
+}