diff --git a/drm/libdrmframework/DrmManagerClient.cpp b/drm/libdrmframework/DrmManagerClient.cpp
index b50199f..c9c0d57 100644
--- a/drm/libdrmframework/DrmManagerClient.cpp
+++ b/drm/libdrmframework/DrmManagerClient.cpp
@@ -24,7 +24,7 @@
 
 DrmManagerClient::DrmManagerClient():
         mUniqueId(0), mDrmManagerClientImpl(NULL) {
-    mDrmManagerClientImpl = DrmManagerClientImpl::create(&mUniqueId);
+    mDrmManagerClientImpl = DrmManagerClientImpl::create(&mUniqueId, true);
     mDrmManagerClientImpl->addClient(mUniqueId);
 }
 
diff --git a/drm/libdrmframework/DrmManagerClientImpl.cpp b/drm/libdrmframework/DrmManagerClientImpl.cpp
index a36bd4a..67f58ca 100644
--- a/drm/libdrmframework/DrmManagerClientImpl.cpp
+++ b/drm/libdrmframework/DrmManagerClientImpl.cpp
@@ -33,13 +33,10 @@
 sp<DrmManagerClientImpl::DeathNotifier> DrmManagerClientImpl::sDeathNotifier;
 const String8 DrmManagerClientImpl::EMPTY_STRING("");
 
-DrmManagerClientImpl* DrmManagerClientImpl::create(int* pUniqueId) {
-    if (0 == *pUniqueId) {
-        int uniqueId = getDrmManagerService()->addUniqueId(*pUniqueId);
-        *pUniqueId = uniqueId;
-    } else {
-        getDrmManagerService()->addUniqueId(*pUniqueId);
-    }
+DrmManagerClientImpl* DrmManagerClientImpl::create(
+        int* pUniqueId, bool isNative) {
+    *pUniqueId = getDrmManagerService()->addUniqueId(isNative);
+
     return new DrmManagerClientImpl();
 }
 
diff --git a/drm/libdrmframework/include/DrmManager.h b/drm/libdrmframework/include/DrmManager.h
index af2c2a8..ac2b946 100644
--- a/drm/libdrmframework/include/DrmManager.h
+++ b/drm/libdrmframework/include/DrmManager.h
@@ -53,7 +53,7 @@
     virtual ~DrmManager();
 
 public:
-    int addUniqueId(int uniqueId);
+    int addUniqueId(bool isNative);
 
     void removeUniqueId(int uniqueId);
 
diff --git a/drm/libdrmframework/include/DrmManagerClientImpl.h b/drm/libdrmframework/include/DrmManagerClientImpl.h
index 564896b..e3338d9 100644
--- a/drm/libdrmframework/include/DrmManagerClientImpl.h
+++ b/drm/libdrmframework/include/DrmManagerClientImpl.h
@@ -38,7 +38,7 @@
     DrmManagerClientImpl() { }
 
 public:
-    static DrmManagerClientImpl* create(int* pUniqueId);
+    static DrmManagerClientImpl* create(int* pUniqueId, bool isNative);
 
     static void remove(int uniqueId);
 
diff --git a/drm/libdrmframework/include/DrmManagerService.h b/drm/libdrmframework/include/DrmManagerService.h
index 227496a..9cb5804 100644
--- a/drm/libdrmframework/include/DrmManagerService.h
+++ b/drm/libdrmframework/include/DrmManagerService.h
@@ -46,7 +46,7 @@
     virtual ~DrmManagerService();
 
 public:
-    int addUniqueId(int uniqueId);
+    int addUniqueId(bool isNative);
 
     void removeUniqueId(int uniqueId);
 
diff --git a/drm/libdrmframework/include/IDrmManagerService.h b/drm/libdrmframework/include/IDrmManagerService.h
index 7727e55..b9618bb 100644
--- a/drm/libdrmframework/include/IDrmManagerService.h
+++ b/drm/libdrmframework/include/IDrmManagerService.h
@@ -81,7 +81,7 @@
     DECLARE_META_INTERFACE(DrmManagerService);
 
 public:
-    virtual int addUniqueId(int uniqueId) = 0;
+    virtual int addUniqueId(bool isNative) = 0;
 
     virtual void removeUniqueId(int uniqueId) = 0;
 
@@ -167,7 +167,7 @@
     BpDrmManagerService(const sp<IBinder>& impl)
             : BpInterface<IDrmManagerService>(impl) {}
 
-    virtual int addUniqueId(int uniqueId);
+    virtual int addUniqueId(bool isNative);
 
     virtual void removeUniqueId(int uniqueId);
 
diff --git a/drm/libdrmframework/plugins/common/include/DrmEngineBase.h b/drm/libdrmframework/plugins/common/include/DrmEngineBase.h
index b61e3d3..4a5afcf 100644
--- a/drm/libdrmframework/plugins/common/include/DrmEngineBase.h
+++ b/drm/libdrmframework/plugins/common/include/DrmEngineBase.h
@@ -143,7 +143,13 @@
      * Register a callback to be invoked when the caller required to
      * receive necessary information
      *
-     * @param[in] uniqueId Unique identifier for a session
+     * @param[in] uniqueId Unique identifier for a session. uniqueId is a random
+     *                     number generated in the DRM service. If the DrmManagerClient
+     *                     is created in native code, uniqueId will be a number ranged
+     *                     from 0x1000 to 0x1fff. If it comes from Java code, the uniqueId
+     *                     will be a number ranged from 0x00 to 0xfff. So bit 0x1000 in
+     *                     uniqueId could be used in DRM plugins to differentiate native
+     *                     OnInfoListener and Java OnInfoListener.
      * @param[in] infoListener Listener
      * @return status_t
      *     Returns DRM_NO_ERROR for success, DRM_ERROR_UNKNOWN for failure