diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
new file mode 100644
index 0000000..ef52269
--- /dev/null
+++ b/libs/gui/SurfaceControl.cpp
@@ -0,0 +1,194 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "SurfaceControl"
+
+#include <stdint.h>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <android/native_window.h>
+
+#include <utils/CallStack.h>
+#include <utils/Errors.h>
+#include <utils/Log.h>
+#include <utils/threads.h>
+
+#include <binder/IPCThreadState.h>
+
+#include <ui/DisplayInfo.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/Rect.h>
+
+#include <gui/ISurface.h>
+#include <gui/ISurfaceComposer.h>
+#include <gui/Surface.h>
+#include <gui/SurfaceComposerClient.h>
+#include <gui/SurfaceControl.h>
+
+namespace android {
+
+// ============================================================================
+//  SurfaceControl
+// ============================================================================
+
+SurfaceControl::SurfaceControl(
+        const sp<SurfaceComposerClient>& client, 
+        const sp<ISurface>& surface)
+    : mClient(client)
+{
+    if (surface != 0) {
+        mSurface = surface->asBinder();
+        mGraphicBufferProducer = surface->getSurfaceTexture();
+    }
+}
+        
+SurfaceControl::~SurfaceControl()
+{
+    destroy();
+}
+
+void SurfaceControl::destroy()
+{
+    if (isValid()) {
+        mClient->destroySurface(mSurface);
+    }
+    // clear all references and trigger an IPC now, to make sure things
+    // happen without delay, since these resources are quite heavy.
+    mClient.clear();
+    mSurface.clear();
+    mGraphicBufferProducer.clear();
+    IPCThreadState::self()->flushCommands();
+}
+
+void SurfaceControl::clear() 
+{
+    // here, the window manager tells us explicitly that we should destroy
+    // the surface's resource. Soon after this call, it will also release
+    // its last reference (which will call the dtor); however, it is possible
+    // that a client living in the same process still holds references which
+    // would delay the call to the dtor -- that is why we need this explicit
+    // "clear()" call.
+    destroy();
+}
+
+bool SurfaceControl::isSameSurface(
+        const sp<SurfaceControl>& lhs, const sp<SurfaceControl>& rhs) 
+{
+    if (lhs == 0 || rhs == 0)
+        return false;
+    return lhs->mSurface == rhs->mSurface;
+}
+
+status_t SurfaceControl::setLayerStack(int32_t layerStack) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setLayerStack(mSurface, layerStack);
+}
+status_t SurfaceControl::setLayer(int32_t layer) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setLayer(mSurface, layer);
+}
+status_t SurfaceControl::setPosition(int32_t x, int32_t y) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setPosition(mSurface, x, y);
+}
+status_t SurfaceControl::setSize(uint32_t w, uint32_t h) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setSize(mSurface, w, h);
+}
+status_t SurfaceControl::hide() {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->hide(mSurface);
+}
+status_t SurfaceControl::show() {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->show(mSurface);
+}
+status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setFlags(mSurface, flags, mask);
+}
+status_t SurfaceControl::setTransparentRegionHint(const Region& transparent) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setTransparentRegionHint(mSurface, transparent);
+}
+status_t SurfaceControl::setAlpha(float alpha) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setAlpha(mSurface, alpha);
+}
+status_t SurfaceControl::setMatrix(float dsdx, float dtdx, float dsdy, float dtdy) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setMatrix(mSurface, dsdx, dtdx, dsdy, dtdy);
+}
+status_t SurfaceControl::setCrop(const Rect& crop) {
+    status_t err = validate();
+    if (err < 0) return err;
+    const sp<SurfaceComposerClient>& client(mClient);
+    return client->setCrop(mSurface, crop);
+}
+
+status_t SurfaceControl::validate() const
+{
+    if (mSurface==0 || mClient==0) {
+        ALOGE("invalid ISurface (%p) or client (%p)",
+                mSurface.get(), mClient.get());
+        return NO_INIT;
+    }
+    return NO_ERROR;
+}
+
+status_t SurfaceControl::writeSurfaceToParcel(
+        const sp<SurfaceControl>& control, Parcel* parcel)
+{
+    sp<IGraphicBufferProducer> bp;
+    if (control != NULL) {
+        bp = control->mGraphicBufferProducer;
+    }
+    return parcel->writeStrongBinder(bp->asBinder());
+}
+
+sp<Surface> SurfaceControl::getSurface() const
+{
+    Mutex::Autolock _l(mLock);
+    if (mSurfaceData == 0) {
+        mSurfaceData = new Surface(mGraphicBufferProducer);
+    }
+    return mSurfaceData;
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android