diff --git a/include/private/opengles/gl_context.h b/include/private/opengles/gl_context.h
index 0c7ad46..641961f 100644
--- a/include/private/opengles/gl_context.h
+++ b/include/private/opengles/gl_context.h
@@ -26,6 +26,7 @@
 #endif
 
 #include <private/pixelflinger/ggl_context.h>
+#include <hardware/copybit.h>
 
 #include <GLES/gl.h>
 #include <GLES/glext.h>
@@ -39,7 +40,7 @@
 class EGLBufferObjectManager;
 
 namespace gl {
- 
+
 struct ogles_context_t;
 struct matrixx_t;
 struct transform_t;
@@ -96,7 +97,7 @@
 
 struct vertex_t {
     enum {
-        // these constant matter for our clipping 
+        // these constant matter for our clipping
         CLIP_L          = 0x0001,   // clipping flags
         CLIP_R          = 0x0002,
         CLIP_B          = 0x0004,
@@ -106,7 +107,7 @@
 
         EYE             = 0x0040,
         RESERVED        = 0x0080,
-        
+
         USER_CLIP_0     = 0x0100,   // user clipping flags
         USER_CLIP_1     = 0x0200,
         USER_CLIP_2     = 0x0400,
@@ -121,7 +122,7 @@
         USER_CLIP_ALL   = 0x3F00,
         CLIP_ALL        = 0x3F3F,
     };
-    
+
     // the fields below are arranged to minimize d-cache usage
     // we group together, by cache-line, the fields most likely to be used
 
@@ -130,7 +131,7 @@
     vec4_t          eye;
     };
     vec4_t          clip;
-    
+
     uint32_t        flags;
     size_t          index;  // cache tag, and vertex index
     GLfixed         fog;
@@ -142,7 +143,7 @@
     vec4_t          color;
     vec4_t          texture[GGL_TEXTURE_UNIT_COUNT];
     uint32_t        reserved1[4];
-    
+
     inline void clear() {
         flags = index = locked = mru = 0;
     }
@@ -199,7 +200,7 @@
     GLenum          indicesType;
     buffer_t const* array_buffer;
     buffer_t const* element_array_buffer;
-    
+
     void (*compileElements)(ogles_context_t*, vertex_t*, GLint, GLsizei);
     void (*compileElement)(ogles_context_t*, vertex_t*, GLint);
 
@@ -410,7 +411,7 @@
     matrixx_t       matrix;
     uint32_t        flags;
     uint32_t        ops;
-    
+
     union {
         struct {
             void (*point2)(transform_t const* t, vec4_t*, vec4_t const*);
@@ -509,17 +510,17 @@
     GLint       x;
     GLint       y;
     GLsizei     w;
-    GLsizei     h; 
+    GLsizei     h;
     struct {
         GLint       x;
         GLint       y;
-    } surfaceport;  
+    } surfaceport;
     struct {
         GLint       x;
         GLint       y;
         GLsizei     w;
-        GLsizei     h; 
-    } scissor;  
+        GLsizei     h;
+    } scissor;
 };
 
 // ----------------------------------------------------------------------------
@@ -594,6 +595,16 @@
     void (*renderTriangle)(GL, vertex_t*, vertex_t*, vertex_t*);
 };
 
+struct copybits_context_t {
+    // A handle to the blit engine, if it exists, else NULL.
+    copybit_device_t*       blitEngine;
+    int32_t                 minScale;
+    int32_t                 maxScale;
+    // File descriptor of current drawing surface, if it's suitable for use as
+    // a copybits destination, else -1.
+    int                     drawSurfaceFd;
+};
+
 struct ogles_context_t {
     context_t               rasterizer;
     array_machine_t         arrays         __attribute__((aligned(32)));
@@ -617,6 +628,14 @@
     uint32_t                transformTextures : 1;
     EGLSurfaceManager*      surfaceManager;
     EGLBufferObjectManager* bufferObjectManager;
+
+    // copybits is only used if LIBAGL_USE_GRALLOC_COPYBITS is
+    // defined, but it is always present because ogles_context_t is a public
+    // struct that is used by clients of libagl. We want the size and offsets
+    // to stay the same, whether or not LIBAGL_USE_GRALLOC_COPYBITS is defined.
+
+    copybits_context_t      copybits;
+
     GLenum                  error;
 
     static inline ogles_context_t* get() {
diff --git a/include/private/ui/SharedState.h b/include/private/ui/SharedState.h
index 546d0ad..646cc10 100644
--- a/include/private/ui/SharedState.h
+++ b/include/private/ui/SharedState.h
@@ -32,16 +32,12 @@
 
 struct surface_info_t { // 4 longs, 16 bytes
     enum {
-        eBufferDirty    = 0x01
+        eBufferDirty    = 0x01,
+        eNeedNewBuffer  = 0x02
     };
-    uint16_t    w;
-    uint16_t    h;
-    uint16_t    stride;
-    uint16_t    bpr;
-    uint16_t    reserved;
-    uint8_t     format;
+    uint8_t     reserved[11];
     uint8_t     flags;
-    ssize_t     bits_offset;
+    status_t    status;
 };
 
 // ---------------------------------------------------------------------------
@@ -110,8 +106,6 @@
         INSPECT  = 0x00000002
     };
 
-    per_client_cblk_t();
-
     // these functions are used by the clients
     status_t validate(size_t i) const;
     int32_t lock_layer(size_t i, uint32_t flags);
@@ -138,12 +132,9 @@
 
 struct surface_flinger_cblk_t   // 4KB max
 {
-    surface_flinger_cblk_t();
-    
     uint8_t         connected;
     uint8_t         reserved[3];
     uint32_t        pad[7];
- 
     display_cblk_t  displays[NUM_DISPLAY_MAX];
 };
 
diff --git a/include/private/ui/SurfaceBuffer.h b/include/private/ui/SurfaceBuffer.h
new file mode 100644
index 0000000..c45abeb
--- /dev/null
+++ b/include/private/ui/SurfaceBuffer.h
@@ -0,0 +1,76 @@
+/*
+ * 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_UI_PRIVATE_SURFACE_BUFFER_H
+#define ANDROID_UI_PRIVATE_SURFACE_BUFFER_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/RefBase.h>
+
+#include <private/ui/android_natives_priv.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class BufferMapper;
+class Rect;
+class Surface;
+class SurfaceBuffer;
+
+// ---------------------------------------------------------------------------
+
+class SurfaceBuffer 
+    : public EGLNativeBase<
+        android_native_buffer_t, 
+        SurfaceBuffer, 
+        LightRefBase<SurfaceBuffer> >
+{
+public:
+    status_t lock(uint32_t usage, void** vaddr);
+    status_t lock(uint32_t usage, const Rect& rect, void** vaddr);
+    status_t unlock();
+
+protected:
+            SurfaceBuffer();
+            SurfaceBuffer(const Parcel& reply);
+    virtual ~SurfaceBuffer();
+    bool mOwner;
+
+    inline const BufferMapper& getBufferMapper() const { return mBufferMapper; }
+    inline BufferMapper& getBufferMapper() { return mBufferMapper; }
+    
+private:
+    friend class Surface;
+    friend class BpSurface;
+    friend class BnSurface;
+    friend class LightRefBase<SurfaceBuffer>;    
+
+    SurfaceBuffer& operator = (const SurfaceBuffer& rhs);
+    const SurfaceBuffer& operator = (const SurfaceBuffer& rhs) const;
+
+    static status_t writeToParcel(Parcel* reply, 
+            android_native_buffer_t const* buffer);
+    
+    BufferMapper& mBufferMapper;
+};
+
+}; // namespace android
+
+#endif // ANDROID_UI_PRIVATE_SURFACE_BUFFER_H
+
diff --git a/include/private/ui/SurfaceFlingerSynchro.h b/include/private/ui/SurfaceFlingerSynchro.h
index ff91b61..7386d33 100644
--- a/include/private/ui/SurfaceFlingerSynchro.h
+++ b/include/private/ui/SurfaceFlingerSynchro.h
@@ -21,7 +21,6 @@
 #include <stdint.h>
 #include <sys/types.h>
 #include <utils/Errors.h>
-#include <utils/threads.h>
 #include <ui/ISurfaceComposer.h>
 
 namespace android {
@@ -31,7 +30,6 @@
 class SurfaceFlingerSynchro
 {
 public:
-
                 // client constructor
                 SurfaceFlingerSynchro(const sp<ISurfaceComposer>& flinger);
                 ~SurfaceFlingerSynchro();
@@ -40,34 +38,8 @@
     status_t    signal();
     
 private:
-    class Barrier {
-    public:
-        Barrier();
-        ~Barrier();
-        void open();
-        void close();
-        void waitAndClose();
-        status_t waitAndClose(nsecs_t timeout);
-    private:
-        enum { OPENED, CLOSED };
-        mutable     Mutex       lock;
-        mutable     Condition   cv;
-        volatile    int         state;
-    };
-
     friend class SurfaceFlinger;
-
-                // server constructor
-                SurfaceFlingerSynchro();
-                
-    void        open();
-    
-                // wait until there is some work to do
-    status_t    wait();
-    status_t    wait(nsecs_t timeout);
-    
     sp<ISurfaceComposer> mSurfaceComposer;
-    Barrier              mBarrier;
 };
 
 }; // namespace android
diff --git a/include/private/ui/android_natives_priv.h b/include/private/ui/android_natives_priv.h
new file mode 100644
index 0000000..ee843e9
--- /dev/null
+++ b/include/private/ui/android_natives_priv.h
@@ -0,0 +1,62 @@
+/*
+ * Copyright (C) 2009 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_ANDROID_NATIVES_PRIV_H
+#define ANDROID_ANDROID_NATIVES_PRIV_H
+
+#include <ui/egl/android_natives.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*****************************************************************************/
+
+struct android_native_buffer_t
+{
+#ifdef __cplusplus
+    android_native_buffer_t() { 
+        common.magic = ANDROID_NATIVE_BUFFER_MAGIC;
+        common.version = sizeof(android_native_buffer_t);
+        memset(common.reserved, 0, sizeof(common.reserved));
+    }
+#endif
+
+    struct android_native_base_t common;
+
+    int width;
+    int height;
+    int stride;
+    int format;
+    int usage;
+    
+    void* reserved[2];
+
+    buffer_handle_t handle;
+
+    void* reserved_proc[8];
+};
+
+
+/*****************************************************************************/
+
+#ifdef __cplusplus
+}
+#endif
+
+/*****************************************************************************/
+
+#endif /* ANDROID_ANDROID_NATIVES_PRIV_H */