Add inference snapshot notify client

rknn.h

@@ -8,7 +8,8 @@
 
 #define MODELDIR "."
 
-#define DEFAULT_CONF_THRESHOLD 0.6
+#define DEFAULT_CONF_THRESHOLD 0.7
+#define HEARTBEAT_SECS 60
 extern float conf_threshold;
 
 extern char *CameraID;
@@ -60,6 +61,7 @@ typedef struct rknn
 */
 
 extern char *global_model;
+extern char *server;
 
 /*
 rknn_t *get_rknn();
@@ -79,4 +81,4 @@ int print_object_detect_result(rknn_app_context_t* rknn, object_detect_result_li
 
 // #define DUMP_FIRST_FRAME
 
-#endif
+#endif