diff --git a/include/media/MediaPlayerInterface.h b/include/media/MediaPlayerInterface.h
index 9102b40..97d55aa 100644
--- a/include/media/MediaPlayerInterface.h
+++ b/include/media/MediaPlayerInterface.h
@@ -29,7 +29,10 @@
 
 namespace android {
 
+typedef int32_t MetadataType;
+
 class Parcel;
+template<typename T> class SortedVector;
 
 enum player_type {
     PV_PLAYER = 1,
@@ -112,12 +115,23 @@
                             mCookie = cookie; mNotify = notifyFunc; }
     // Invoke a generic method on the player by using opaque parcels
     // for the request and reply.
+    //
     // @param request Parcel that is positioned at the start of the
     //                data sent by the java layer.
     // @param[out] reply Parcel to hold the reply data. Cannot be null.
-    // @return OK if the invocation was made successfully. A player
-    // not supporting the direct API should return INVALID_OPERATION.
+    // @return OK if the call was successful.
     virtual status_t    invoke(const Parcel& request, Parcel *reply) = 0;
+
+    // The Client in the MetadataPlayerService calls this method on
+    // the native player to retrieve all or a subset of metadata.
+    //
+    // @param ids SortedList of metadata ID to be fetch. If empty, all
+    //            the known metadata should be returned.
+    // @param[inout] records Parcel where the player appends its metadata.
+    // @return OK if the call was successful.
+    virtual status_t    getMetadata(const SortedVector<MetadataType>& ids,
+                                    Parcel *records) = 0;
+
 protected:
     virtual void        sendEvent(int msg, int ext1=0, int ext2=0) { if (mNotify) mNotify(mCookie, msg, ext1, ext2); }