diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index 8f7bc05..101292d 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -50,8 +50,7 @@
     {
     }
 
-    virtual sp<ISurface> createSurface( surface_data_t* params,
-                                        const String8& name,
+    virtual sp<ISurface> createSurface( const String8& name,
                                         uint32_t w,
                                         uint32_t h,
                                         PixelFormat format,
@@ -65,15 +64,14 @@
         data.writeInt32(format);
         data.writeInt32(flags);
         remote()->transact(CREATE_SURFACE, data, &reply);
-        params->readFromParcel(reply);
         return interface_cast<ISurface>(reply.readStrongBinder());
     }
 
-    virtual status_t destroySurface(SurfaceID sid)
+    virtual status_t destroySurface(const sp<IBinder>& handle)
     {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
-        data.writeInt32(sid);
+        data.writeStrongBinder(handle);
         remote()->transact(DESTROY_SURFACE, data, &reply);
         return reply.readInt32();
     }
@@ -89,21 +87,18 @@
      switch(code) {
         case CREATE_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
-            surface_data_t params;
             String8 name = data.readString8();
             uint32_t w = data.readInt32();
             uint32_t h = data.readInt32();
             PixelFormat format = data.readInt32();
             uint32_t flags = data.readInt32();
-            sp<ISurface> s = createSurface(&params, name, w, h,
-                    format, flags);
-            params.writeToParcel(reply);
+            sp<ISurface> s = createSurface(name, w, h, format, flags);
             reply->writeStrongBinder(s->asBinder());
             return NO_ERROR;
         } break;
         case DESTROY_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
-            reply->writeInt32( destroySurface( data.readInt32() ) );
+            reply->writeInt32( destroySurface( data.readStrongBinder() ) );
             return NO_ERROR;
         } break;
         default:
@@ -111,20 +106,4 @@
     }
 }
 
-// ----------------------------------------------------------------------
-
-status_t ISurfaceComposerClient::surface_data_t::readFromParcel(const Parcel& parcel)
-{
-    token    = parcel.readInt32();
-    identity = parcel.readInt32();
-    return NO_ERROR;
-}
-
-status_t ISurfaceComposerClient::surface_data_t::writeToParcel(Parcel* parcel) const
-{
-    parcel->writeInt32(token);
-    parcel->writeInt32(identity);
-    return NO_ERROR;
-}
-
 }; // namespace android
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 5e5edcd..acdbd77 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -24,29 +24,41 @@
 
 status_t layer_state_t::write(Parcel& output) const
 {
-    status_t err;
-
-    err = output.write(transparentRegion);
-    if (err < NO_ERROR) return err;
-
-    // NOTE: regions are at the end of the structure
-    size_t size = sizeof(layer_state_t);
-    size -= sizeof(transparentRegion);
-    err = output.write(this, size);
-    return err;
+    output.writeStrongBinder(surface);
+    output.writeInt32(what);
+    output.writeFloat(x);
+    output.writeFloat(y);
+    output.writeInt32(z);
+    output.writeInt32(w);
+    output.writeInt32(h);
+    output.writeInt32(layerStack);
+    output.writeFloat(alpha);
+    output.writeInt32(flags);
+    output.writeInt32(mask);
+    *reinterpret_cast<layer_state_t::matrix22_t *>(
+            output.writeInplace(sizeof(layer_state_t::matrix22_t))) = matrix;
+    output.write(crop);
+    output.write(transparentRegion);
+    return NO_ERROR;
 }
 
 status_t layer_state_t::read(const Parcel& input)
 {
-    status_t err;
-
-    err = input.read(transparentRegion);
-    if (err < NO_ERROR) return err;
-
-    // NOTE: regions are at the end of the structure
-    size_t size = sizeof(layer_state_t);
-    size -= sizeof(transparentRegion);
-    input.read(this, size);
+    surface = input.readStrongBinder();
+    what = input.readInt32();
+    x = input.readFloat();
+    y = input.readFloat();
+    z = input.readInt32();
+    w = input.readInt32();
+    h = input.readInt32();
+    layerStack = input.readInt32();
+    alpha = input.readFloat();
+    flags = input.readInt32();
+    mask = input.readInt32();
+    matrix = *reinterpret_cast<layer_state_t::matrix22_t const *>(
+            input.readInplace(sizeof(layer_state_t::matrix22_t)));
+    input.read(crop);
+    input.read(transparentRegion);
     return NO_ERROR;
 }
 
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index 51d37b3..81fc019 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -48,11 +48,12 @@
 
 SurfaceControl::SurfaceControl(
         const sp<SurfaceComposerClient>& client, 
-        const sp<ISurface>& surface,
-        const ISurfaceComposerClient::surface_data_t& data)
-    : mClient(client), mSurface(surface),
-      mToken(data.token), mIdentity(data.identity)
+        const sp<ISurface>& surface)
+    : mClient(client)
 {
+    if (surface != 0) {
+        mSurface = surface->asBinder();
+    }
 }
         
 SurfaceControl::~SurfaceControl()
@@ -63,9 +64,8 @@
 void SurfaceControl::destroy()
 {
     if (isValid()) {
-        mClient->destroySurface(mToken);
+        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();
@@ -89,81 +89,81 @@
 {
     if (lhs == 0 || rhs == 0)
         return false;
-    return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
+    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(mToken, layerStack);
+    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(mToken, layer);
+    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(mToken, x, y);
+    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(mToken, w, h);
+    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(mToken);
+    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(mToken);
+    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(mToken, flags, mask);
+    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(mToken, transparent);
+    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(mToken, alpha);
+    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(mToken, dsdx, dtdx, dsdy, dtdy);
+    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(mToken, crop);
+    return client->setCrop(mSurface, crop);
 }
 
 status_t SurfaceControl::validate() const
 {
-    if (mToken<0 || mClient==0) {
-        ALOGE("invalid token (%d, identity=%u) or client (%p)", 
-                mToken, mIdentity, mClient.get());
+    if (mSurface==0 || mClient==0) {
+        ALOGE("invalid ISurface (%p) or client (%p)",
+                mSurface.get(), mClient.get());
         return NO_INIT;
     }
     return NO_ERROR;
@@ -172,15 +172,12 @@
 status_t SurfaceControl::writeSurfaceToParcel(
         const sp<SurfaceControl>& control, Parcel* parcel)
 {
-    sp<ISurface> sur;
-    uint32_t identity = 0;
+    sp<IBinder> sur;
     if (SurfaceControl::isValid(control)) {
-        sur      = control->mSurface;
-        identity = control->mIdentity;
+        sur = control->mSurface;
     }
-    parcel->writeStrongBinder(sur!=0 ? sur->asBinder() : NULL);
+    parcel->writeStrongBinder(sur);
     parcel->writeStrongBinder(NULL);  // NULL IGraphicBufferProducer in this case.
-    parcel->writeInt32(identity);
     return NO_ERROR;
 }
 
@@ -198,13 +195,10 @@
 //  Surface
 // ============================================================================
 
-// ---------------------------------------------------------------------------
-
 Surface::Surface(const sp<SurfaceControl>& surface)
-    : SurfaceTextureClient(),
-      mSurface(surface->mSurface),
-      mIdentity(surface->mIdentity)
+    : SurfaceTextureClient()
 {
+    mSurface = interface_cast<ISurface>(surface->mSurface);
     sp<IGraphicBufferProducer> st;
     if (mSurface != NULL) {
         st = mSurface->getSurfaceTexture();
@@ -223,15 +217,12 @@
     } else if (mSurface != NULL) {
         st = mSurface->getSurfaceTexture();
     }
-
-    mIdentity   = parcel.readInt32();
     init(st);
 }
 
 Surface::Surface(const sp<IGraphicBufferProducer>& st)
     : SurfaceTextureClient(),
-      mSurface(NULL),
-      mIdentity(0)
+      mSurface(NULL)
 {
     init(st);
 }
@@ -245,19 +236,16 @@
     if (Surface::isValid(surface)) {
         sur      = surface->mSurface;
         st       = surface->getISurfaceTexture();
-        identity = surface->mIdentity;
     } else if (surface != 0 &&
             (surface->mSurface != NULL ||
              surface->getISurfaceTexture() != NULL)) {
         ALOGE("Parceling invalid surface with non-NULL ISurface/IGraphicBufferProducer "
-             "as NULL: mSurface = %p, bufferProducer = %p, mIdentity = %d, ",
-             surface->mSurface.get(), surface->getISurfaceTexture().get(),
-             surface->mIdentity);
+             "as NULL: mSurface = %p, bufferProducer = %p ",
+             surface->mSurface.get(), surface->getISurfaceTexture().get());
     }
 
     parcel->writeStrongBinder(sur != NULL ? sur->asBinder() : NULL);
     parcel->writeStrongBinder(st != NULL ? st->asBinder() : NULL);
-    parcel->writeInt32(identity);
     return NO_ERROR;
 
 }
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 0c6881a..0bafc92 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -128,7 +128,7 @@
     void setAnimationTransactionImpl();
 
     layer_state_t* getLayerStateLocked(
-            const sp<SurfaceComposerClient>& client, SurfaceID id);
+            const sp<SurfaceComposerClient>& client, const sp<IBinder>& id);
 
     DisplayState& getDisplayStateLocked(const sp<IBinder>& token);
 
@@ -136,26 +136,26 @@
     sp<IBinder> createDisplay(const String8& displayName, bool secure);
     sp<IBinder> getBuiltInDisplay(int32_t id);
 
-    status_t setPosition(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setPosition(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             float x, float y);
-    status_t setSize(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setSize(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             uint32_t w, uint32_t h);
-    status_t setLayer(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setLayer(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             int32_t z);
-    status_t setFlags(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setFlags(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             uint32_t flags, uint32_t mask);
     status_t setTransparentRegionHint(
-            const sp<SurfaceComposerClient>& client, SurfaceID id,
+            const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             const Region& transparentRegion);
-    status_t setAlpha(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setAlpha(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             float alpha);
-    status_t setMatrix(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setMatrix(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             float dsdx, float dtdx, float dsdy, float dtdy);
     status_t setOrientation(int orientation);
-    status_t setCrop(const sp<SurfaceComposerClient>& client, SurfaceID id,
+    status_t setCrop(const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
             const Rect& crop);
     status_t setLayerStack(const sp<SurfaceComposerClient>& client,
-            SurfaceID id, uint32_t layerStack);
+            const sp<IBinder>& id, uint32_t layerStack);
 
     void setDisplaySurface(const sp<IBinder>& token,
             const sp<IGraphicBufferProducer>& bufferProducer);
@@ -241,7 +241,7 @@
 }
 
 layer_state_t* Composer::getLayerStateLocked(
-        const sp<SurfaceComposerClient>& client, SurfaceID id) {
+        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id) {
 
     ComposerState s;
     s.client = client->mClient;
@@ -258,7 +258,7 @@
 }
 
 status_t Composer::setPosition(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, float x, float y) {
+        const sp<IBinder>& id, float x, float y) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -270,7 +270,7 @@
 }
 
 status_t Composer::setSize(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, uint32_t w, uint32_t h) {
+        const sp<IBinder>& id, uint32_t w, uint32_t h) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -286,7 +286,7 @@
 }
 
 status_t Composer::setLayer(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, int32_t z) {
+        const sp<IBinder>& id, int32_t z) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -297,7 +297,7 @@
 }
 
 status_t Composer::setFlags(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, uint32_t flags,
+        const sp<IBinder>& id, uint32_t flags,
         uint32_t mask) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
@@ -311,7 +311,7 @@
 }
 
 status_t Composer::setTransparentRegionHint(
-        const sp<SurfaceComposerClient>& client, SurfaceID id,
+        const sp<SurfaceComposerClient>& client, const sp<IBinder>& id,
         const Region& transparentRegion) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
@@ -323,7 +323,7 @@
 }
 
 status_t Composer::setAlpha(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, float alpha) {
+        const sp<IBinder>& id, float alpha) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -334,7 +334,7 @@
 }
 
 status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, uint32_t layerStack) {
+        const sp<IBinder>& id, uint32_t layerStack) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -345,7 +345,7 @@
 }
 
 status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, float dsdx, float dtdx,
+        const sp<IBinder>& id, float dsdx, float dtdx,
         float dsdy, float dtdy) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
@@ -362,7 +362,7 @@
 }
 
 status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, const Rect& crop) {
+        const sp<IBinder>& id, const Rect& crop) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
@@ -472,11 +472,9 @@
 {
     sp<SurfaceControl> result;
     if (mStatus == NO_ERROR) {
-        ISurfaceComposerClient::surface_data_t data;
-        sp<ISurface> surface = mClient->createSurface(&data, name,
-                w, h, format, flags);
+        sp<ISurface> surface = mClient->createSurface(name, w, h, format, flags);
         if (surface != 0) {
-            result = new SurfaceControl(this, surface, data);
+            result = new SurfaceControl(this, surface);
         }
     }
     return result;
@@ -491,7 +489,7 @@
     return Composer::getInstance().getBuiltInDisplay(id);
 }
 
-status_t SurfaceComposerClient::destroySurface(SurfaceID sid) {
+status_t SurfaceComposerClient::destroySurface(const sp<IBinder>& sid) {
     if (mStatus != NO_ERROR)
         return mStatus;
     status_t err = mClient->destroySurface(sid);
@@ -518,53 +516,53 @@
 
 // ----------------------------------------------------------------------------
 
-status_t SurfaceComposerClient::setCrop(SurfaceID id, const Rect& crop) {
+status_t SurfaceComposerClient::setCrop(const sp<IBinder>& id, const Rect& crop) {
     return getComposer().setCrop(this, id, crop);
 }
 
-status_t SurfaceComposerClient::setPosition(SurfaceID id, float x, float y) {
+status_t SurfaceComposerClient::setPosition(const sp<IBinder>& id, float x, float y) {
     return getComposer().setPosition(this, id, x, y);
 }
 
-status_t SurfaceComposerClient::setSize(SurfaceID id, uint32_t w, uint32_t h) {
+status_t SurfaceComposerClient::setSize(const sp<IBinder>& id, uint32_t w, uint32_t h) {
     return getComposer().setSize(this, id, w, h);
 }
 
-status_t SurfaceComposerClient::setLayer(SurfaceID id, int32_t z) {
+status_t SurfaceComposerClient::setLayer(const sp<IBinder>& id, int32_t z) {
     return getComposer().setLayer(this, id, z);
 }
 
-status_t SurfaceComposerClient::hide(SurfaceID id) {
+status_t SurfaceComposerClient::hide(const sp<IBinder>& id) {
     return getComposer().setFlags(this, id,
             layer_state_t::eLayerHidden,
             layer_state_t::eLayerHidden);
 }
 
-status_t SurfaceComposerClient::show(SurfaceID id) {
+status_t SurfaceComposerClient::show(const sp<IBinder>& id) {
     return getComposer().setFlags(this, id,
             0,
             layer_state_t::eLayerHidden);
 }
 
-status_t SurfaceComposerClient::setFlags(SurfaceID id, uint32_t flags,
+status_t SurfaceComposerClient::setFlags(const sp<IBinder>& id, uint32_t flags,
         uint32_t mask) {
     return getComposer().setFlags(this, id, flags, mask);
 }
 
-status_t SurfaceComposerClient::setTransparentRegionHint(SurfaceID id,
+status_t SurfaceComposerClient::setTransparentRegionHint(const sp<IBinder>& id,
         const Region& transparentRegion) {
     return getComposer().setTransparentRegionHint(this, id, transparentRegion);
 }
 
-status_t SurfaceComposerClient::setAlpha(SurfaceID id, float alpha) {
+status_t SurfaceComposerClient::setAlpha(const sp<IBinder>& id, float alpha) {
     return getComposer().setAlpha(this, id, alpha);
 }
 
-status_t SurfaceComposerClient::setLayerStack(SurfaceID id, uint32_t layerStack) {
+status_t SurfaceComposerClient::setLayerStack(const sp<IBinder>& id, uint32_t layerStack) {
     return getComposer().setLayerStack(this, id, layerStack);
 }
 
-status_t SurfaceComposerClient::setMatrix(SurfaceID id, float dsdx, float dtdx,
+status_t SurfaceComposerClient::setMatrix(const sp<IBinder>& id, float dsdx, float dtdx,
         float dsdy, float dtdy) {
     return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
 }