添加对象统计接口

src/Extension/Frame.h

@@ -122,6 +122,10 @@ public:
      * 返回可缓存的frame
      */
     static Ptr getCacheAbleFrame(const Ptr &frame);
+
+private:
+    //对象个数统计
+    ObjectStatistic<Frame> _statistic;
 };
 
 class FrameImp : public Frame {
@@ -166,6 +170,8 @@ public:
     uint32_t _pts = 0;
     size_t _prefix_size = 0;
     BufferLikeString _buffer;
+    //对象个数统计
+    ObjectStatistic<FrameImp> _statistic;
 };
 
 /**