diff --git a/libs/surfaceflinger/LayerBitmap.h b/libs/surfaceflinger/LayerBitmap.h
new file mode 100644
index 0000000..4c2eb50
--- /dev/null
+++ b/libs/surfaceflinger/LayerBitmap.h
@@ -0,0 +1,87 @@
+/*
+ * 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_BITMAP_H
+#define ANDROID_LAYER_BITMAP_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Atomic.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <private/ui/SharedState.h>
+#include <pixelflinger/pixelflinger.h>
+
+class copybit_image_t;
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class IMemory;
+class MemoryDealer;
+class LayerBitmap;
+
+// ---------------------------------------------------------------------------
+
+class LayerBitmap
+{
+public:
+
+    enum {
+        // erase memory to ensure security when necessary
+        SECURE_BITS = 0x00000001
+    };
+
+                LayerBitmap();
+                ~LayerBitmap();
+    status_t    init(const sp<MemoryDealer>& allocator);
+
+    status_t    setBits(uint32_t w, uint32_t h, uint32_t alignment,
+                        PixelFormat format, uint32_t flags = 0);
+    void        clear();
+
+    status_t    getInfo(surface_info_t* info) const;
+    status_t    resize(uint32_t w, uint32_t h);
+
+    const GGLSurface& surface() const   { return mSurface; }
+    Rect bounds() const                 { return Rect(width(), height()); }
+    uint32_t width() const              { return surface().width; }
+    uint32_t height() const             { return surface().height; }
+    uint32_t stride() const             { return surface().stride; }
+    PixelFormat pixelFormat() const     { return surface().format; }
+    void* serverBits() const            { return surface().data; }
+    size_t size() const;
+    const sp<MemoryDealer>& getAllocator() const { return mAllocator; }
+    void getBitmapSurface(copybit_image_t* img) const;
+
+private:
+    LayerBitmap(const LayerBitmap& rhs);
+    LayerBitmap& operator = (const LayerBitmap& rhs);
+
+    sp<MemoryDealer>        mAllocator;
+    sp<IMemory>             mBitsMemory;
+    uint32_t                mAllocFlags;
+    ssize_t                 mOffset;
+    GGLSurface              mSurface;
+    size_t                  mSize;
+    uint32_t                mAlignment;
+};
+
+}; // namespace android
+
+#endif // ANDROID_LAYER_BITMAP_H