diff --git a/libs/surfaceflinger/LayerBuffer.h b/libs/surfaceflinger/LayerBuffer.h
new file mode 100644
index 0000000..ef473dd
--- /dev/null
+++ b/libs/surfaceflinger/LayerBuffer.h
@@ -0,0 +1,145 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef ANDROID_LAYER_BUFFER_H
+#define ANDROID_LAYER_BUFFER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/IMemory.h>
+#include <private/ui/LayerState.h>
+#include <GLES/eglnatives.h>
+
+#include "LayerBase.h"
+#include "LayerBitmap.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class MemoryDealer;
+class Region;
+
+class LayerBuffer : public LayerBaseClient
+{
+public:
+    static const uint32_t typeInfo;
+    static const char* const typeID;
+    virtual char const* getTypeID() const { return typeID; }
+    virtual uint32_t getTypeInfo() const { return typeInfo; }
+
+            LayerBuffer(SurfaceFlinger* flinger, DisplayID display,
+                        Client* client, int32_t i);
+        virtual ~LayerBuffer();
+
+    virtual bool needsBlending() const;
+
+    virtual sp<LayerBaseClient::Surface> getSurface() const;
+    virtual void onDraw(const Region& clip) const;
+    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
+
+    status_t registerBuffers(int w, int h, int hstride, int vstride,
+            PixelFormat format, const sp<IMemoryHeap>& heap);
+    void postBuffer(ssize_t offset);
+    void unregisterBuffers();
+    void invalidate();
+    void invalidateLocked();
+
+private:
+
+    struct NativeBuffer
+    {
+        copybit_image_t   img;
+        copybit_rect_t    crop;
+    };
+
+    class Buffer
+    {
+    public:
+        Buffer(const sp<IMemoryHeap>& heap, ssize_t offset,
+                int w, int h, int hs, int vs, int f);
+        inline void incStrong(void*) const {
+            android_atomic_inc(&mCount);
+        }
+        inline void decStrong(void*) const {
+            int32_t c = android_atomic_dec(&mCount);
+            //LOGE_IF(c<1, "Buffer::decStrong() called too many times");
+            if (c == 1) {
+                 delete this;
+             }
+        }
+        inline status_t getStatus() const {
+            return mHeap!=0 ? NO_ERROR : NO_INIT;
+        }
+        inline const NativeBuffer& getBuffer() const {
+            return mNativeBuffer;
+        }
+    protected:
+        Buffer& operator = (const Buffer& rhs);
+        Buffer(const Buffer& rhs);
+        ~Buffer();
+        mutable volatile int32_t mCount;
+    private:
+        sp<IMemoryHeap>    mHeap;
+        NativeBuffer       mNativeBuffer;
+    };
+
+    class SurfaceBuffer : public LayerBaseClient::Surface
+    {
+    public:
+                SurfaceBuffer(SurfaceID id, LayerBuffer* owner);
+        virtual ~SurfaceBuffer();
+        virtual status_t registerBuffers(int w, int h, int hstride, int vstride,
+                PixelFormat format, const sp<IMemoryHeap>& heap);
+        virtual void postBuffer(ssize_t offset);
+        virtual void unregisterBuffers();
+        void disown();
+    private:
+        LayerBuffer* getOwner() const {
+            Mutex::Autolock _l(mLock);
+            return mOwner;
+        }
+        mutable Mutex   mLock;
+        LayerBuffer*    mOwner;
+    };
+
+    friend class SurfaceFlinger;
+    sp<Buffer> getBuffer() const;
+    void       setBuffer(const sp<Buffer>& buffer);
+    sp<SurfaceBuffer>   getClientSurface() const;
+
+    mutable Mutex   mLock;
+    sp<IMemoryHeap> mHeap;
+    sp<Buffer>      mBuffer;
+    int             mWidth;
+    int             mHeight;
+    int             mHStride;
+    int             mVStride;
+    int             mFormat;
+    mutable GLuint  mTextureName;
+    bool            mInvalidate;
+    bool            mNeedsBlending;
+    mutable wp<SurfaceBuffer> mClientSurface;
+    mutable sp<MemoryDealer> mTemporaryDealer;
+    mutable LayerBitmap mTempBitmap;
+};
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_LAYER_BUFFER_H