diff --git a/libs/surfaceflinger/Layer.h b/libs/surfaceflinger/Layer.h
new file mode 100644
index 0000000..2867f2b
--- /dev/null
+++ b/libs/surfaceflinger/Layer.h
@@ -0,0 +1,120 @@
+/*
+ * 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_H
+#define ANDROID_LAYER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <ui/PixelFormat.h>
+
+#include <private/ui/SharedState.h>
+#include <private/ui/LayerState.h>
+
+#include <pixelflinger/pixelflinger.h>
+
+#include "LayerBitmap.h"
+#include "LayerBase.h"
+#include "Transform.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class Client;
+class LayerBitmap;
+class MemoryDealer;
+class FreezeLock;
+
+// ---------------------------------------------------------------------------
+
+class Layer : 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; }
+
+                 Layer(SurfaceFlinger* flinger, DisplayID display,
+                         Client* c, int32_t i);
+
+        virtual ~Layer();
+
+    inline PixelFormat pixelFormat() const {
+        return frontBuffer().pixelFormat();
+    }
+
+    status_t setBuffers(    Client* client,
+                            uint32_t w, uint32_t h,
+                            PixelFormat format, uint32_t flags=0);
+
+    virtual void onDraw(const Region& clip) const;
+    virtual void initStates(uint32_t w, uint32_t h, uint32_t flags);
+    virtual void setSizeChanged(uint32_t w, uint32_t h);
+    virtual uint32_t doTransaction(uint32_t transactionFlags);
+    virtual Point getPhysicalSize() const;
+    virtual void lockPageFlip(bool& recomputeVisibleRegions);
+    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
+    virtual void finishPageFlip();
+    virtual bool needsBlending() const      { return mNeedsBlending; }
+    virtual bool isSecure() const           { return mSecure; }
+    virtual GLuint getTextureName() const   { return mTextureName; }
+    virtual sp<Surface> getSurface() const;
+
+    const LayerBitmap& getBuffer(int i) const { return mBuffers[i]; }
+          LayerBitmap& getBuffer(int i)       { return mBuffers[i]; }
+
+    // only for debugging
+    const sp<FreezeLock>&  getFreezeLock() const { return mFreezeLock; }
+
+private:
+    inline const LayerBitmap&
+            frontBuffer() const { return getBuffer(mFrontBufferIndex); }
+    inline LayerBitmap&
+            frontBuffer()       { return getBuffer(mFrontBufferIndex); }
+    inline const LayerBitmap&
+            backBuffer() const  { return getBuffer(1-mFrontBufferIndex); }
+    inline LayerBitmap&
+            backBuffer()        { return getBuffer(1-mFrontBufferIndex); }
+
+    void reloadTexture(const Region& dirty);
+
+    status_t resize(int32_t index, uint32_t w, uint32_t h, const char* what);
+    Region post(uint32_t* oldState, bool& recomputeVisibleRegions);
+    status_t reallocateBuffer(int32_t index, uint32_t w, uint32_t h);
+
+    sp<Surface>             mSurface;
+
+            bool            mSecure;
+            LayerBitmap     mBuffers[2];
+            int32_t         mFrontBufferIndex;
+            bool            mNeedsBlending;
+            bool            mResizeTransactionDone;
+            Region          mPostedDirtyRegion;
+            sp<FreezeLock>  mFreezeLock;
+            
+            GLuint          mTextureName;
+            GLuint          mTextureWidth;
+            GLuint          mTextureHeight;
+};
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_LAYER_H