diff --git a/mpp/base/CMakeLists.txt b/mpp/base/CMakeLists.txt
index c84eb1f8..f83a4843 100644
--- a/mpp/base/CMakeLists.txt
+++ b/mpp/base/CMakeLists.txt
@@ -9,6 +9,7 @@ add_library(mpp_base STATIC
     mpp_buffer.cpp
     mpp_packet.cpp
     mpp_frame.cpp
+    mpp_task_impl.cpp
     mpp_task.cpp
     mpp_meta.cpp
     mpp_bitread.c
diff --git a/mpp/base/inc/mpp_task_impl.h b/mpp/base/inc/mpp_task_impl.h
index fc816b6f..6fe60670 100644
--- a/mpp/base/inc/mpp_task_impl.h
+++ b/mpp/base/inc/mpp_task_impl.h
@@ -18,7 +18,7 @@
 #define __MPP_TASK_IMPL_H__
 
 #include "mpp_list.h"
-#include "mpp_meta.h"
+#include "mpp_task.h"
 
 /*
  * mpp task status transaction
diff --git a/mpp/base/mpp_meta.cpp b/mpp/base/mpp_meta.cpp
index ab045b59..c66c44bd 100644
--- a/mpp/base/mpp_meta.cpp
+++ b/mpp/base/mpp_meta.cpp
@@ -116,6 +116,37 @@ public:
     void          put_node(MppMetaNode *node);
 };
 
+MppMetaService::MppMetaService()
+  : meta_id(0),
+    meta_count(0),
+    node_count(0)
+{
+    INIT_LIST_HEAD(&mlist_meta);
+    INIT_LIST_HEAD(&mlist_node);
+}
+
+MppMetaService::~MppMetaService()
+{
+    mpp_assert(list_empty(&mlist_meta));
+    mpp_assert(list_empty(&mlist_node));
+
+    while (!list_empty(&mlist_meta)) {
+        MppMetaImpl *pos, *n;
+        list_for_each_entry_safe(pos, n, &mlist_meta, MppMetaImpl, list_meta) {
+            put_meta(pos);
+        }
+    }
+
+    mpp_assert(list_empty(&mlist_node));
+
+    while (!list_empty(&mlist_node)) {
+        MppMetaNode *pos, *n;
+        list_for_each_entry_safe(pos, n, &mlist_node, MppMetaNode, list_node) {
+            put_node(pos);
+        }
+    }
+}
+
 RK_S32 MppMetaService::get_index_of_key(MppMetaKey key, MppMetaType type)
 {
     RK_S32 i = 0;