diff --git a/media/libmedia/IDirectTrackClient.cpp b/media/libmedia/IDirectTrackClient.cpp
new file mode 100644
index 0000000..86a47ec
--- /dev/null
+++ b/media/libmedia/IDirectTrackClient.cpp
@@ -0,0 +1,69 @@
+/*
+** Copyright (c) 2012, The Linux Foundation. All rights reserved.
+** Not a Contribution, Apache license notifications and license are retained
+** for attribution purposes only.
+**
+** Copyright 2007, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <utils/RefBase.h>
+#include <binder/IInterface.h>
+#include <binder/Parcel.h>
+
+#include <media/IDirectTrackClient.h>
+
+namespace android {
+
+enum {
+    NOTIFY = IBinder::FIRST_CALL_TRANSACTION,
+};
+
+class BpDirectTrackClient: public BpInterface<IDirectTrackClient>
+{
+public:
+    BpDirectTrackClient(const sp<IBinder>& impl)
+        : BpInterface<IDirectTrackClient>(impl)
+    {
+    }
+
+    virtual void notify(int msg)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IDirectTrackClient::getInterfaceDescriptor());
+        data.writeInt32(msg);
+        remote()->transact(NOTIFY, data, &reply, IBinder::FLAG_ONEWAY);
+    }
+};
+
+IMPLEMENT_META_INTERFACE(DirectTrackClient, "android.media.IDirectTrackClient");
+
+// ----------------------------------------------------------------------
+
+status_t BnDirectTrackClient::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+        case NOTIFY: {
+            CHECK_INTERFACE(IDirectTrackClient, data, reply);
+            int msg = data.readInt32();
+            notify(msg);
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+}; // namespace android