diff --git a/include/surfaceflinger/ISurfaceFlingerClient.h b/include/surfaceflinger/ISurfaceFlingerClient.h
index d257645..c96432f 100644
--- a/include/surfaceflinger/ISurfaceFlingerClient.h
+++ b/include/surfaceflinger/ISurfaceFlingerClient.h
@@ -59,6 +59,9 @@
     
     virtual sp<IMemoryHeap> getControlBlock() const = 0;
 
+    /*
+     * Requires ACCESS_SURFACE_FLINGER permission
+     */
     virtual sp<ISurface> createSurface( surface_data_t* data,
                                         int pid, 
                                         const String8& name,
@@ -68,8 +71,14 @@
                                         PixelFormat format,
                                         uint32_t flags) = 0;
                                     
+    /*
+     * Requires ACCESS_SURFACE_FLINGER permission
+     */
     virtual status_t    destroySurface(SurfaceID sid) = 0;
 
+    /*
+     * Requires ACCESS_SURFACE_FLINGER permission
+     */
     virtual status_t    setState(int32_t count, const layer_state_t* states) = 0;
 };
 
diff --git a/include/surfaceflinger/Surface.h b/include/surfaceflinger/Surface.h
index 4c8d023..68809a9 100644
--- a/include/surfaceflinger/Surface.h
+++ b/include/surfaceflinger/Surface.h
@@ -215,10 +215,12 @@
     void dispatch_setUsage(va_list args);
     int  dispatch_connect(va_list args);
     int  dispatch_disconnect(va_list args);
+    int  dispatch_crop(va_list args);
     
     void setUsage(uint32_t reqUsage);
     int  connect(int api);
     int  disconnect(int api);
+    int  crop(Rect const* rect);
 
     uint32_t getUsage() const;
     int      getConnectedApi() const;
@@ -237,6 +239,7 @@
     Rect                        mSwapRectangle;
     uint32_t                    mUsage;
     int                         mConnected;
+    Rect                        mNextBufferCrop;
     
     // protected by mSurfaceLock. These are also used from lock/unlock
     // but in that case, they must be called form the same thread.