diff --git a/libs/ui/Overlay.cpp b/libs/ui/Overlay.cpp
new file mode 100644
index 0000000..2267c3e
--- /dev/null
+++ b/libs/ui/Overlay.cpp
@@ -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.
+ */
+
+#include <utils/IMemory.h>
+#include <utils/Parcel.h>
+
+#include <ui/IOverlay.h>
+#include <ui/Overlay.h>
+
+namespace android {
+
+Overlay::Overlay(overlay_handle_t* handle, 
+        const sp<IOverlay>& o, const sp<IMemoryHeap>& heap, 
+        uint32_t w, uint32_t h, int32_t f, uint32_t ws, uint32_t hs)
+    : mOverlay(o), mHeap(heap), mCurrentBufferOffset(0), mOverlayHandle(handle),
+      mWidth(w), mHeight(h), mFormat(f), mWidthStride(ws), mHeightStride(hs)
+{
+}
+
+Overlay::Overlay(overlay_t* overlay, 
+        const sp<IOverlay>& o, const sp<IMemoryHeap>& heap)
+    : mOverlay(o), mHeap(heap) 
+{
+    mCurrentBufferOffset = 0; 
+    mOverlayHandle = overlay->getHandleRef(overlay);
+    mWidth = overlay->w;
+    mHeight = overlay->h;
+    mFormat = overlay->format; 
+    mWidthStride = overlay->w_stride;
+    mHeightStride = overlay->h_stride;
+}
+
+
+Overlay::~Overlay() {
+}
+
+void Overlay::destroy() {  
+    mOverlay->destroy();
+}
+
+status_t Overlay::swapBuffers() {
+    ssize_t result = mOverlay->swapBuffers();
+    if (result < 0)
+        return status_t(result);
+    mCurrentBufferOffset = result;
+    return NO_ERROR;
+}
+
+overlay_handle_t const* Overlay::getHandleRef() const {
+    return mOverlayHandle;
+}
+
+size_t Overlay::getBufferOffset() const {
+    return mCurrentBufferOffset;
+}
+
+sp<IMemoryHeap> Overlay::getHeap() const {
+    return mHeap;
+}
+
+uint32_t Overlay::getWidth() const {
+    return mWidth;
+}
+
+uint32_t Overlay::getHeight() const {
+    return mHeight;
+}
+
+int32_t Overlay::getFormat() const {
+    return mFormat;
+}
+
+int32_t Overlay::getWidthStride() const {
+    return mWidthStride;
+}
+
+int32_t Overlay::getHeightStride() const {
+    return mHeightStride;
+}
+
+sp<Overlay> Overlay::readFromParcel(const Parcel& data) {
+    sp<Overlay> result;
+    sp<IOverlay> overlay = IOverlay::asInterface(data.readStrongBinder());
+    if (overlay != NULL) {
+        sp<IMemoryHeap> heap = IMemoryHeap::asInterface(data.readStrongBinder());
+        uint32_t w = data.readInt32();
+        uint32_t h = data.readInt32();
+        uint32_t f = data.readInt32();
+        uint32_t ws = data.readInt32();
+        uint32_t hs = data.readInt32();
+        /* FIXME: handles should be promoted to "real" API and be handled by 
+         * the framework */
+        int numfd = data.readInt32();
+        int numint = data.readInt32();
+        overlay_handle_t* handle = (overlay_handle_t*)malloc(
+                sizeof(overlay_handle_t) + numint*sizeof(int));
+        for (int i=0 ; i<numfd ; i++)
+            handle->fds[i] = data.readFileDescriptor();
+        for (int i=0 ; i<numint ; i++)
+            handle->data[i] = data.readInt32();
+        result = new Overlay(handle, overlay, heap, w, h, f, ws, hs);
+    }
+    return result;
+}
+
+status_t Overlay::writeToParcel(Parcel* reply, const sp<Overlay>& o) {
+    if (o != NULL) {
+        reply->writeStrongBinder(o->mOverlay->asBinder());
+        reply->writeStrongBinder(o->mHeap->asBinder());
+        reply->writeInt32(o->mWidth);
+        reply->writeInt32(o->mHeight);
+        reply->writeInt32(o->mFormat);
+        reply->writeInt32(o->mWidthStride);
+        reply->writeInt32(o->mHeightStride);
+        /* FIXME: handles should be promoted to "real" API and be handled by 
+         * the framework */
+        reply->writeInt32(o->mOverlayHandle->numFds);
+        reply->writeInt32(o->mOverlayHandle->numInts);
+        for (int i=0 ; i<o->mOverlayHandle->numFds ; i++)
+            reply->writeFileDescriptor(o->mOverlayHandle->fds[i]);
+        for (int i=0 ; i<o->mOverlayHandle->numInts ; i++)
+            reply->writeInt32(o->mOverlayHandle->data[i]);
+    } else {
+        reply->writeStrongBinder(NULL);
+    }
+    return NO_ERROR;
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+