diff --git a/include/ui/ICameraClient.h b/include/ui/ICameraClient.h
index c4bdd07..1001c71 100644
--- a/include/ui/ICameraClient.h
+++ b/include/ui/ICameraClient.h
@@ -21,6 +21,7 @@
 #include <utils/IInterface.h>
 #include <utils/Parcel.h>
 #include <utils/IMemory.h>
+#include <utils/Timers.h>
 
 namespace android {
 
@@ -31,7 +32,7 @@
 
     virtual void            notifyCallback(int32_t msgType, int32_t ext1, int32_t ext2) = 0;
     virtual void            dataCallback(int32_t msgType, const sp<IMemory>& data) = 0;
-
+    virtual void            dataCallbackTimestamp(nsecs_t timestamp, int32_t msgType, const sp<IMemory>& data) = 0;
 };
 
 // ----------------------------------------------------------------------------