diff --git a/services/surfaceflinger/Client.h b/services/surfaceflinger/Client.h
new file mode 100644
index 0000000..9bfee72
--- /dev/null
+++ b/services/surfaceflinger/Client.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#ifndef ANDROID_SF_CLIENT_H
+#define ANDROID_SF_CLIENT_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/Mutex.h>
+
+#include <gui/ISurfaceComposerClient.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class LayerBaseClient;
+class SurfaceFlinger;
+
+// ---------------------------------------------------------------------------
+
+class Client : public BnSurfaceComposerClient
+{
+public:
+        Client(const sp<SurfaceFlinger>& flinger);
+        ~Client();
+
+    status_t initCheck() const;
+
+    // protected by SurfaceFlinger::mStateLock
+    size_t attachLayer(const sp<LayerBaseClient>& layer);
+
+    void detachLayer(const LayerBaseClient* layer);
+
+    sp<LayerBaseClient> getLayerUser(int32_t i) const;
+
+private:
+    // ISurfaceComposerClient interface
+    virtual sp<ISurface> createSurface(
+            surface_data_t* params, const String8& name,
+            DisplayID display, uint32_t w, uint32_t h,PixelFormat format,
+            uint32_t flags);
+
+    virtual status_t destroySurface(SurfaceID surfaceId);
+
+    virtual status_t onTransact(
+        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
+
+    // constant
+    sp<SurfaceFlinger> mFlinger;
+
+    // protected by mLock
+    DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers;
+    size_t mNameGenerator;
+
+    // thread-safe
+    mutable Mutex mLock;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SF_CLIENT_H