diff --git a/build/tablet-10in-xhdpi-2048-dalvik-heap.mk b/build/tablet-10in-xhdpi-2048-dalvik-heap.mk
new file mode 100644
index 0000000..eeec219
--- /dev/null
+++ b/build/tablet-10in-xhdpi-2048-dalvik-heap.mk
@@ -0,0 +1,22 @@
+#
+# Copyright (C) 2012 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.
+#
+
+# Provides overrides to configure the Dalvik heap for a standard tablet device.
+
+PRODUCT_PROPERTY_OVERRIDES += \
+    dalvik.vm.heapstartsize=16m \
+    dalvik.vm.heapgrowthlimit=192m \
+    dalvik.vm.heapsize=768m
diff --git a/cmds/dumpstate/dumpstate.c b/cmds/dumpstate/dumpstate.c
index 3b28b22..4bb05c4 100644
--- a/cmds/dumpstate/dumpstate.c
+++ b/cmds/dumpstate/dumpstate.c
@@ -88,7 +88,9 @@
 
 
     dump_file("KERNEL WAKELOCKS", "/proc/wakelocks");
+    dump_file("KERNEL WAKE SOURCES", "/d/wakeup_sources");
     dump_file("KERNEL CPUFREQ", "/sys/devices/system/cpu/cpu0/cpufreq/stats/time_in_state");
+    dump_file("KERNEL SYNC", "/d/sync");
 
     run_command("PROCESSES", 10, "ps", "-P", NULL);
     run_command("PROCESSES AND THREADS", 10, "ps", "-t", "-p", "-P", NULL);
@@ -312,6 +314,14 @@
     int use_socket = 0;
     int do_fb = 0;
 
+    if (getuid() != 0) {
+        // Old versions of the adb client would call the
+        // dumpstate command directly. Newer clients
+        // call /system/bin/bugreport instead. If we detect
+        // we're being called incorrectly, then exec the
+        // correct program.
+        return execl("/system/bin/bugreport", "/system/bin/bugreport", NULL);
+    }
     ALOGI("begin\n");
 
     signal(SIGPIPE, SIG_IGN);
@@ -356,44 +366,42 @@
         fclose(cmdline);
     }
 
-    if (getuid() == 0) {
-        if (prctl(PR_SET_KEEPCAPS, 1) < 0) {
-            ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno));
-            return -1;
-        }
+    if (prctl(PR_SET_KEEPCAPS, 1) < 0) {
+        ALOGE("prctl(PR_SET_KEEPCAPS) failed: %s\n", strerror(errno));
+        return -1;
+    }
 
-        /* switch to non-root user and group */
-        gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW,
-                AID_MOUNT, AID_INET, AID_NET_BW_STATS };
-        if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
-            ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno));
-            return -1;
-        }
-        if (setgid(AID_SHELL) != 0) {
-            ALOGE("Unable to setgid, aborting: %s\n", strerror(errno));
-            return -1;
-        }
-        if (setuid(AID_SHELL) != 0) {
-            ALOGE("Unable to setuid, aborting: %s\n", strerror(errno));
-            return -1;
-        }
+    /* switch to non-root user and group */
+    gid_t groups[] = { AID_LOG, AID_SDCARD_R, AID_SDCARD_RW,
+            AID_MOUNT, AID_INET, AID_NET_BW_STATS };
+    if (setgroups(sizeof(groups)/sizeof(groups[0]), groups) != 0) {
+        ALOGE("Unable to setgroups, aborting: %s\n", strerror(errno));
+        return -1;
+    }
+    if (setgid(AID_SHELL) != 0) {
+        ALOGE("Unable to setgid, aborting: %s\n", strerror(errno));
+        return -1;
+    }
+    if (setuid(AID_SHELL) != 0) {
+        ALOGE("Unable to setuid, aborting: %s\n", strerror(errno));
+        return -1;
+    }
 
-        struct __user_cap_header_struct capheader;
-        struct __user_cap_data_struct capdata[2];
-        memset(&capheader, 0, sizeof(capheader));
-        memset(&capdata, 0, sizeof(capdata));
-        capheader.version = _LINUX_CAPABILITY_VERSION_3;
-        capheader.pid = 0;
+    struct __user_cap_header_struct capheader;
+    struct __user_cap_data_struct capdata[2];
+    memset(&capheader, 0, sizeof(capheader));
+    memset(&capdata, 0, sizeof(capdata));
+    capheader.version = _LINUX_CAPABILITY_VERSION_3;
+    capheader.pid = 0;
 
-        capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG);
-        capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG);
-        capdata[0].inheritable = 0;
-        capdata[1].inheritable = 0;
+    capdata[CAP_TO_INDEX(CAP_SYSLOG)].permitted = CAP_TO_MASK(CAP_SYSLOG);
+    capdata[CAP_TO_INDEX(CAP_SYSLOG)].effective = CAP_TO_MASK(CAP_SYSLOG);
+    capdata[0].inheritable = 0;
+    capdata[1].inheritable = 0;
 
-        if (capset(&capheader, &capdata[0]) < 0) {
-            ALOGE("capset failed: %s\n", strerror(errno));
-            return -1;
-        }
+    if (capset(&capheader, &capdata[0]) < 0) {
+        ALOGE("capset failed: %s\n", strerror(errno));
+        return -1;
     }
 
     char path[PATH_MAX], tmp_path[PATH_MAX];
diff --git a/cmds/sensorservice/Android.mk b/cmds/sensorservice/Android.mk
new file mode 100644
index 0000000..0811be5
--- /dev/null
+++ b/cmds/sensorservice/Android.mk
@@ -0,0 +1,19 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+	main_sensorservice.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+	libsensorservice \
+	libbinder \
+	libutils
+
+LOCAL_C_INCLUDES := \
+	$(LOCAL_PATH)/../../services/sensorservice
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_MODULE:= sensorservice
+
+include $(BUILD_EXECUTABLE)
diff --git a/cmds/sensorservice/main_sensorservice.cpp b/cmds/sensorservice/main_sensorservice.cpp
new file mode 100644
index 0000000..8610627
--- /dev/null
+++ b/cmds/sensorservice/main_sensorservice.cpp
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2011 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 <binder/BinderService.h>
+#include <SensorService.h>
+
+using namespace android;
+
+int main(int argc, char** argv) {
+    SensorService::publishAndJoinThreadPool();
+    return 0;
+}
diff --git a/include/binder/Parcel.h b/include/binder/Parcel.h
index 33b2f00..877b17c 100644
--- a/include/binder/Parcel.h
+++ b/include/binder/Parcel.h
@@ -22,10 +22,12 @@
 #include <utils/RefBase.h>
 #include <utils/String16.h>
 #include <utils/Vector.h>
+#include <utils/Flattenable.h>
 
 // ---------------------------------------------------------------------------
 namespace android {
 
+template <typename T> class LightFlattenable;
 class Flattenable;
 class IBinder;
 class IPCThreadState;
@@ -102,6 +104,10 @@
     status_t            writeWeakBinder(const wp<IBinder>& val);
     status_t            write(const Flattenable& val);
 
+    template<typename T>
+    status_t            write(const LightFlattenable<T>& val);
+
+
     // Place a native_handle into the parcel (the native_handle's file-
     // descriptors are dup'ed, so it is safe to delete the native_handle
     // when this function returns). 
@@ -153,6 +159,9 @@
     wp<IBinder>         readWeakBinder() const;
     status_t            read(Flattenable& val) const;
 
+    template<typename T>
+    status_t            read(LightFlattenable<T>& val) const;
+
     // Like Parcel.java's readExceptionCode().  Reads the first int32
     // off of a Parcel's header, returning 0 or the negative error
     // code on exceptions, but also deals with skipping over rich
@@ -267,6 +276,40 @@
 
 // ---------------------------------------------------------------------------
 
+template<typename T>
+status_t Parcel::write(const LightFlattenable<T>& val) {
+    size_t size(val.getSize());
+    if (!val.isFixedSize()) {
+        status_t err = writeInt32(size);
+        if (err != NO_ERROR) {
+            return err;
+        }
+    }
+    void* buffer = writeInplace(size);
+    return buffer == NULL ? NO_MEMORY :
+        val.flatten(buffer);
+}
+
+template<typename T>
+status_t Parcel::read(LightFlattenable<T>& val) const {
+    size_t size;
+    if (val.isFixedSize()) {
+        size = val.getSize();
+    } else {
+        int32_t s;
+        status_t err = readInt32(&s);
+        if (err != NO_ERROR) {
+            return err;
+        }
+        size = s;
+    }
+    void const* buffer = readInplace(size);
+    return buffer == NULL ? NO_MEMORY :
+        val.unflatten(buffer, size);
+}
+
+// ---------------------------------------------------------------------------
+
 inline TextOutput& operator<<(TextOutput& to, const Parcel& parcel)
 {
     parcel.print(to);
diff --git a/include/binder/PermissionCache.h b/include/binder/PermissionCache.h
index 1171d48..bcdf0c2 100644
--- a/include/binder/PermissionCache.h
+++ b/include/binder/PermissionCache.h
@@ -22,6 +22,7 @@
 
 #include <utils/String16.h>
 #include <utils/Singleton.h>
+#include <utils/SortedVector.h>
 
 namespace android {
 // ---------------------------------------------------------------------------
diff --git a/include/gui/BufferItemConsumer.h b/include/gui/BufferItemConsumer.h
new file mode 100644
index 0000000..cd4df25
--- /dev/null
+++ b/include/gui/BufferItemConsumer.h
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2012 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_GUI_BUFFERITEMCONSUMER_H
+#define ANDROID_GUI_BUFFERITEMCONSUMER_H
+
+#include <gui/ConsumerBase.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/threads.h>
+
+#define ANDROID_GRAPHICS_BUFFERITEMCONSUMER_JNI_ID "mBufferItemConsumer"
+
+namespace android {
+
+/**
+ * BufferItemConsumer is a BufferQueue consumer endpoint that allows clients
+ * access to the whole BufferItem entry from BufferQueue. Multiple buffers may
+ * be acquired at once, to be used concurrently by the client. This consumer can
+ * operate either in synchronous or asynchronous mode.
+ */
+class BufferItemConsumer: public ConsumerBase
+{
+  public:
+    typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
+
+    typedef BufferQueue::BufferItem BufferItem;
+
+    enum { INVALID_BUFFER_SLOT = BufferQueue::INVALID_BUFFER_SLOT };
+    enum { NO_BUFFER_AVAILABLE = BufferQueue::NO_BUFFER_AVAILABLE };
+
+    // Create a new buffer item consumer. The consumerUsage parameter determines
+    // the consumer usage flags passed to the graphics allocator. The
+    // bufferCount parameter specifies how many buffers can be locked for user
+    // access at the same time.
+    BufferItemConsumer(uint32_t consumerUsage,
+            int bufferCount = BufferQueue::MIN_UNDEQUEUED_BUFFERS,
+            bool synchronousMode = false);
+
+    virtual ~BufferItemConsumer();
+
+    // set the name of the BufferItemConsumer that will be used to identify it in
+    // log messages.
+    void setName(const String8& name);
+
+    // Gets the next graphics buffer from the producer, filling out the
+    // passed-in BufferItem structure. Returns NO_BUFFER_AVAILABLE if the queue
+    // of buffers is empty, and INVALID_OPERATION if the maximum number of
+    // buffers is already acquired.
+    //
+    // Only a fixed number of buffers can be acquired at a time, determined by
+    // the construction-time bufferCount parameter. If INVALID_OPERATION is
+    // returned by acquireBuffer, then old buffers must be returned to the
+    // queue by calling releaseBuffer before more buffers can be acquired.
+    //
+    // If waitForFence is true, and the acquired BufferItem has a valid fence object,
+    // acquireBuffer will wait on the fence with no timeout before returning.
+    status_t acquireBuffer(BufferItem *item, bool waitForFence = true);
+
+    // Returns an acquired buffer to the queue, allowing it to be reused. Since
+    // only a fixed number of buffers may be acquired at a time, old buffers
+    // must be released by calling releaseBuffer to ensure new buffers can be
+    // acquired by acquireBuffer. Once a BufferItem is released, the caller must
+    // not access any members of the BufferItem, and should immediately remove
+    // all of its references to the BufferItem itself.
+    status_t releaseBuffer(const BufferItem &item,
+            const sp<Fence>& releaseFence = Fence::NO_FENCE);
+
+    sp<ISurfaceTexture> getProducerInterface() const { return getBufferQueue(); }
+
+};
+
+} // namespace android
+
+#endif // ANDROID_GUI_CPUCONSUMER_H
diff --git a/include/gui/BufferQueue.h b/include/gui/BufferQueue.h
index 1c80d0c..85d8fb6 100644
--- a/include/gui/BufferQueue.h
+++ b/include/gui/BufferQueue.h
@@ -23,6 +23,7 @@
 #include <gui/IGraphicBufferAlloc.h>
 #include <gui/ISurfaceTexture.h>
 
+#include <ui/Fence.h>
 #include <ui/GraphicBuffer.h>
 
 #include <utils/String8.h>
@@ -96,7 +97,9 @@
     // allowSynchronousMode specifies whether or not synchronous mode can be
     // enabled.
     // bufferCount sets the minimum number of undequeued buffers for this queue
-    BufferQueue(  bool allowSynchronousMode = true, int bufferCount = MIN_UNDEQUEUED_BUFFERS);
+    BufferQueue(bool allowSynchronousMode = true,
+            int bufferCount = MIN_UNDEQUEUED_BUFFERS,
+            const sp<IGraphicBufferAlloc>& allocator = NULL);
     virtual ~BufferQueue();
 
     virtual int query(int what, int* value);
@@ -113,12 +116,18 @@
     // pointed to by the buf argument and a status of OK is returned.  If no
     // slot is available then a status of -EBUSY is returned and buf is
     // unmodified.
+    //
+    // The fence parameter will be updated to hold the fence associated with
+    // the buffer. The contents of the buffer must not be overwritten until the
+    // fence signals. If the fence is NULL, the buffer may be written
+    // immediately.
+    //
     // The width and height parameters must be no greater than the minimum of
     // GL_MAX_VIEWPORT_DIMS and GL_MAX_TEXTURE_SIZE (see: glGetIntegerv).
     // An error due to invalid dimensions might not be reported until
     // updateTexImage() is called.
-    virtual status_t dequeueBuffer(int *buf, uint32_t width, uint32_t height,
-            uint32_t format, uint32_t usage);
+    virtual status_t dequeueBuffer(int *buf, sp<Fence>& fence,
+            uint32_t width, uint32_t height, uint32_t format, uint32_t usage);
 
     // queueBuffer returns a filled buffer to the BufferQueue. In addition, a
     // timestamp must be provided for the buffer. The timestamp is in
@@ -128,7 +137,7 @@
     virtual status_t queueBuffer(int buf,
             const QueueBufferInput& input, QueueBufferOutput* output);
 
-    virtual void cancelBuffer(int buf);
+    virtual void cancelBuffer(int buf, sp<Fence> fence);
 
     // setSynchronousMode set whether dequeueBuffer is synchronous or
     // asynchronous. In synchronous mode, dequeueBuffer blocks until
@@ -193,6 +202,9 @@
 
         // mBuf is the slot index of this buffer
         int mBuf;
+
+        // mFence is a fence that will signal when the buffer is idle.
+        sp<Fence> mFence;
     };
 
     // The following public functions is the consumer facing interface
@@ -209,9 +221,15 @@
     // releaseBuffer releases a buffer slot from the consumer back to the
     // BufferQueue pending a fence sync.
     //
+    // If releaseBuffer returns STALE_BUFFER_SLOT, then the consumer must free
+    // any references to the just-released buffer that it might have, as if it
+    // had received a onBuffersReleased() call with a mask set for the released
+    // buffer.
+    //
     // Note that the dependencies on EGL will be removed once we switch to using
     // the Android HW Sync HAL.
-    status_t releaseBuffer(int buf, EGLDisplay display, EGLSyncKHR fence);
+    status_t releaseBuffer(int buf, EGLDisplay display, EGLSyncKHR fence,
+            const sp<Fence>& releaseFence);
 
     // consumerConnect connects a consumer to the BufferQueue.  Only one
     // consumer may be connected, and when that consumer disconnects the
@@ -292,7 +310,7 @@
           mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
           mTimestamp(0),
           mFrameNumber(0),
-          mFence(EGL_NO_SYNC_KHR),
+          mEglFence(EGL_NO_SYNC_KHR),
           mAcquireCalled(false),
           mNeedsCleanupOnRelease(false) {
             mCrop.makeInvalid();
@@ -365,11 +383,22 @@
         // mFrameNumber is the number of the queued frame for this slot.
         uint64_t mFrameNumber;
 
-        // mFence is the EGL sync object that must signal before the buffer
+        // mEglFence is the EGL sync object that must signal before the buffer
         // associated with this buffer slot may be dequeued. It is initialized
         // to EGL_NO_SYNC_KHR when the buffer is created and (optionally, based
         // on a compile-time option) set to a new sync object in updateTexImage.
-        EGLSyncKHR mFence;
+        EGLSyncKHR mEglFence;
+
+        // mFence is a fence which will signal when work initiated by the
+        // previous owner of the buffer is finished. When the buffer is FREE,
+        // the fence indicates when the consumer has finished reading
+        // from the buffer, or when the producer has finished writing if it
+        // called cancelBuffer after queueing some writes. When the buffer is
+        // QUEUED, it indicates when the producer has finished filling the
+        // buffer. When the buffer is DEQUEUED or ACQUIRED, the fence has been
+        // passed to the consumer or producer along with ownership of the
+        // buffer, and mFence is empty.
+        sp<Fence> mFence;
 
         // Indicates whether this buffer has been seen by a consumer yet
         bool mAcquireCalled;
@@ -393,10 +422,6 @@
     // in requestBuffers() if a width and height of zero is specified.
     uint32_t mDefaultHeight;
 
-    // mPixelFormat holds the pixel format of allocated buffers. It is used
-    // in requestBuffers() if a format of zero is specified.
-    uint32_t mPixelFormat;
-
     // mMinUndequeuedBuffers is a constraint on the number of buffers
     // not dequeued at any time
     int mMinUndequeuedBuffers;
diff --git a/include/gui/ConsumerBase.h b/include/gui/ConsumerBase.h
new file mode 100644
index 0000000..a0ddca8
--- /dev/null
+++ b/include/gui/ConsumerBase.h
@@ -0,0 +1,212 @@
+/*
+ * Copyright (C) 2010 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_GUI_CONSUMERBASE_H
+#define ANDROID_GUI_CONSUMERBASE_H
+
+#include <gui/BufferQueue.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/threads.h>
+
+namespace android {
+// ----------------------------------------------------------------------------
+
+class String8;
+
+// ConsumerBase is a base class for BufferQueue consumer end-points. It
+// handles common tasks like management of the connection to the BufferQueue
+// and the buffer pool.
+class ConsumerBase : public virtual RefBase,
+        protected BufferQueue::ConsumerListener {
+public:
+    struct FrameAvailableListener : public virtual RefBase {
+        // onFrameAvailable() is called each time an additional frame becomes
+        // available for consumption. This means that frames that are queued
+        // while in asynchronous mode only trigger the callback if no previous
+        // frames are pending. Frames queued while in synchronous mode always
+        // trigger the callback.
+        //
+        // This is called without any lock held and can be called concurrently
+        // by multiple threads.
+        virtual void onFrameAvailable() = 0;
+    };
+
+    virtual ~ConsumerBase();
+
+    // abandon frees all the buffers and puts the ConsumerBase into the
+    // 'abandoned' state.  Once put in this state the ConsumerBase can never
+    // leave it.  When in the 'abandoned' state, all methods of the
+    // ISurfaceTexture interface will fail with the NO_INIT error.
+    //
+    // Note that while calling this method causes all the buffers to be freed
+    // from the perspective of the the ConsumerBase, if there are additional
+    // references on the buffers (e.g. if a buffer is referenced by a client
+    // or by OpenGL ES as a texture) then those buffer will remain allocated.
+    void abandon();
+
+    // set the name of the ConsumerBase that will be used to identify it in
+    // log messages.
+    void setName(const String8& name);
+
+    // getBufferQueue returns the BufferQueue object to which this
+    // ConsumerBase is connected.
+    sp<BufferQueue> getBufferQueue() const;
+
+    // dump writes the current state to a string.  These methods should NOT be
+    // overridden by child classes.  Instead they should override the
+    // dumpLocked method, which is called by these methods after locking the
+    // mutex.
+    void dump(String8& result) const;
+    void dump(String8& result, const char* prefix, char* buffer, size_t SIZE) const;
+
+    // setFrameAvailableListener sets the listener object that will be notified
+    // when a new frame becomes available.
+    void setFrameAvailableListener(const sp<FrameAvailableListener>& listener);
+
+private:
+    ConsumerBase(const ConsumerBase&);
+    void operator=(const ConsumerBase&);
+
+protected:
+
+    // ConsumerBase constructs a new ConsumerBase object to consume image
+    // buffers from the given BufferQueue.
+    ConsumerBase(const sp<BufferQueue> &bufferQueue);
+
+    // Implementation of the BufferQueue::ConsumerListener interface.  These
+    // calls are used to notify the ConsumerBase of asynchronous events in the
+    // BufferQueue.  These methods should not need to be overridden by derived
+    // classes, but if they are overridden the ConsumerBase implementation
+    // must be called from the derived class.
+    virtual void onFrameAvailable();
+    virtual void onBuffersReleased();
+
+    // freeBufferLocked frees up the given buffer slot.  If the slot has been
+    // initialized this will release the reference to the GraphicBuffer in that
+    // slot.  Otherwise it has no effect.
+    //
+    // Derived classes should override this method to clean up any state they
+    // keep per slot.  If it is overridden, the derived class's implementation
+    // must call ConsumerBase::freeBufferLocked.
+    //
+    // This method must be called with mMutex locked.
+    virtual void freeBufferLocked(int slotIndex);
+
+    // abandonLocked puts the BufferQueue into the abandoned state, causing
+    // all future operations on it to fail. This method rather than the public
+    // abandon method should be overridden by child classes to add abandon-
+    // time behavior.
+    //
+    // Derived classes should override this method to clean up any object
+    // state they keep (as opposed to per-slot state).  If it is overridden,
+    // the derived class's implementation must call ConsumerBase::abandonLocked.
+    //
+    // This method must be called with mMutex locked.
+    virtual void abandonLocked();
+
+    // dumpLocked dumps the current state of the ConsumerBase object to the
+    // result string.  Each line is prefixed with the string pointed to by the
+    // prefix argument.  The buffer argument points to a buffer that may be
+    // used for intermediate formatting data, and the size of that buffer is
+    // indicated by the size argument.
+    //
+    // Derived classes should override this method to dump their internal
+    // state.  If this method is overridden the derived class's implementation
+    // should call ConsumerBase::dumpLocked.
+    //
+    // This method must be called with mMutex locked.
+    virtual void dumpLocked(String8& result, const char* prefix, char* buffer,
+            size_t size) const;
+
+    // acquireBufferLocked fetches the next buffer from the BufferQueue and
+    // updates the buffer slot for the buffer returned.
+    //
+    // Derived classes should override this method to perform any
+    // initialization that must take place the first time a buffer is assigned
+    // to a slot.  If it is overridden the derived class's implementation must
+    // call ConsumerBase::acquireBufferLocked.
+    virtual status_t acquireBufferLocked(BufferQueue::BufferItem *item);
+
+    // releaseBufferLocked relinquishes control over a buffer, returning that
+    // control to the BufferQueue.
+    //
+    // Derived classes should override this method to perform any cleanup that
+    // must take place when a buffer is released back to the BufferQueue.  If
+    // it is overridden the derived class's implementation must call
+    // ConsumerBase::acquireBufferLocked.
+    virtual status_t releaseBufferLocked(int buf, EGLDisplay display,
+           EGLSyncKHR eglFence, const sp<Fence>& fence);
+
+    // Slot contains the information and object references that
+    // ConsumerBase maintains about a BufferQueue buffer slot.
+    struct Slot {
+        // mGraphicBuffer is the Gralloc buffer store in the slot or NULL if
+        // no Gralloc buffer is in the slot.
+        sp<GraphicBuffer> mGraphicBuffer;
+
+        // mFence is a fence which will signal when the buffer associated with
+        // this buffer slot is no longer being used by the consumer and can be
+        // overwritten. The buffer can be dequeued before the fence signals;
+        // the producer is responsible for delaying writes until it signals.
+        sp<Fence> mFence;
+    };
+
+    // mSlots stores the buffers that have been allocated by the BufferQueue
+    // for each buffer slot.  It is initialized to null pointers, and gets
+    // filled in with the result of BufferQueue::acquire when the
+    // client dequeues a buffer from a
+    // slot that has not yet been used. The buffer allocated to a slot will also
+    // be replaced if the requested buffer usage or geometry differs from that
+    // of the buffer allocated to a slot.
+    Slot mSlots[BufferQueue::NUM_BUFFER_SLOTS];
+
+    // mAbandoned indicates that the BufferQueue will no longer be used to
+    // consume images buffers pushed to it using the ISurfaceTexture
+    // interface. It is initialized to false, and set to true in the abandon
+    // method.  A BufferQueue that has been abandoned will return the NO_INIT
+    // error from all IConsumerBase methods capable of returning an error.
+    bool mAbandoned;
+
+    // mName is a string used to identify the ConsumerBase in log messages.
+    // It can be set by the setName method.
+    String8 mName;
+
+    // mFrameAvailableListener is the listener object that will be called when a
+    // new frame becomes available. If it is not NULL it will be called from
+    // queueBuffer.
+    sp<FrameAvailableListener> mFrameAvailableListener;
+
+    // The ConsumerBase has-a BufferQueue and is responsible for creating this object
+    // if none is supplied
+    sp<BufferQueue> mBufferQueue;
+
+    // mMutex is the mutex used to prevent concurrent access to the member
+    // variables of ConsumerBase objects. It must be locked whenever the
+    // member variables are accessed or when any of the *Locked methods are
+    // called.
+    //
+    // This mutex is intended to be locked by derived classes.
+    mutable Mutex mMutex;
+};
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_GUI_CONSUMERBASE_H
diff --git a/include/gui/CpuConsumer.h b/include/gui/CpuConsumer.h
new file mode 100644
index 0000000..807a4b5
--- /dev/null
+++ b/include/gui/CpuConsumer.h
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2012 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_GUI_CPUCONSUMER_H
+#define ANDROID_GUI_CPUCONSUMER_H
+
+#include <gui/ConsumerBase.h>
+
+#include <ui/GraphicBuffer.h>
+
+#include <utils/String8.h>
+#include <utils/Vector.h>
+#include <utils/threads.h>
+
+#define ANDROID_GRAPHICS_CPUCONSUMER_JNI_ID "mCpuConsumer"
+
+namespace android {
+
+/**
+ * CpuConsumer is a BufferQueue consumer endpoint that allows direct CPU
+ * access to the underlying gralloc buffers provided by BufferQueue. Multiple
+ * buffers may be acquired by it at once, to be used concurrently by the
+ * CpuConsumer owner. Sets gralloc usage flags to be software-read-only.
+ * This queue is synchronous by default.
+ */
+
+class CpuConsumer: public ConsumerBase
+{
+  public:
+    typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
+
+    struct LockedBuffer {
+        uint8_t    *data;
+        uint32_t    width;
+        uint32_t    height;
+        PixelFormat format;
+        uint32_t    stride;
+        Rect        crop;
+        uint32_t    transform;
+        uint32_t    scalingMode;
+        int64_t     timestamp;
+        uint64_t    frameNumber;
+    };
+
+    // Create a new CPU consumer. The maxLockedBuffers parameter specifies
+    // how many buffers can be locked for user access at the same time.
+    CpuConsumer(uint32_t maxLockedBuffers);
+
+    virtual ~CpuConsumer();
+
+    // set the name of the CpuConsumer that will be used to identify it in
+    // log messages.
+    void setName(const String8& name);
+
+    // Gets the next graphics buffer from the producer and locks it for CPU use,
+    // filling out the passed-in locked buffer structure with the native pointer
+    // and metadata. Returns BAD_VALUE if no new buffer is available, and
+    // INVALID_OPERATION if the maximum number of buffers is already locked.
+    //
+    // Only a fixed number of buffers can be locked at a time, determined by the
+    // construction-time maxLockedBuffers parameter. If INVALID_OPERATION is
+    // returned by lockNextBuffer, then old buffers must be returned to the queue
+    // by calling unlockBuffer before more buffers can be acquired.
+    status_t lockNextBuffer(LockedBuffer *nativeBuffer);
+
+    // Returns a locked buffer to the queue, allowing it to be reused. Since
+    // only a fixed number of buffers may be locked at a time, old buffers must
+    // be released by calling unlockBuffer to ensure new buffers can be acquired by
+    // lockNextBuffer.
+    status_t unlockBuffer(const LockedBuffer &nativeBuffer);
+
+    sp<ISurfaceTexture> getProducerInterface() const { return getBufferQueue(); }
+
+  private:
+    // Maximum number of buffers that can be locked at a time
+    uint32_t mMaxLockedBuffers;
+
+    virtual void freeBufferLocked(int slotIndex);
+
+    // Array for tracking pointers passed to the consumer, matching the
+    // mSlots indexing
+    void *mBufferPointers[BufferQueue::NUM_BUFFER_SLOTS];
+    // Count of currently locked buffers
+    uint32_t mCurrentLockedBuffers;
+
+};
+
+} // namespace android
+
+#endif // ANDROID_GUI_CPUCONSUMER_H
diff --git a/include/gui/ISurfaceComposer.h b/include/gui/ISurfaceComposer.h
index 09e7771..f4af705 100644
--- a/include/gui/ISurfaceComposer.h
+++ b/include/gui/ISurfaceComposer.h
@@ -34,70 +34,23 @@
 // ----------------------------------------------------------------------------
 
 class ComposerState;
+class DisplayState;
+class DisplayInfo;
 class IDisplayEventConnection;
 class IMemoryHeap;
 
-class ISurfaceComposer : public IInterface
-{
+class ISurfaceComposer: public IInterface {
 public:
     DECLARE_META_INTERFACE(SurfaceComposer);
 
-    enum { // (keep in sync with Surface.java)
-        eHidden             = 0x00000004,
-        eDestroyBackbuffer  = 0x00000020,
-        eSecure             = 0x00000080,
-        eNonPremultiplied   = 0x00000100,
-        eOpaque             = 0x00000400,
-        eProtectedByApp     = 0x00000800,
-        eProtectedByDRM     = 0x00001000,
-
-        eFXSurfaceNormal    = 0x00000000,
-        eFXSurfaceBlur      = 0x00010000,
-        eFXSurfaceDim       = 0x00020000,
-        eFXSurfaceScreenshot= 0x00030000,
-        eFXSurfaceMask      = 0x000F0000,
+    // flags for setTransactionState()
+    enum {
+        eSynchronous = 0x01,
     };
 
     enum {
-        ePositionChanged            = 0x00000001,
-        eLayerChanged               = 0x00000002,
-        eSizeChanged                = 0x00000004,
-        eAlphaChanged               = 0x00000008,
-        eMatrixChanged              = 0x00000010,
-        eTransparentRegionChanged   = 0x00000020,
-        eVisibilityChanged          = 0x00000040,
-        eFreezeTintChanged          = 0x00000080,
-        eCropChanged                = 0x00000100,
-    };
-
-    enum {
-        eLayerHidden        = 0x01,
-        eLayerFrozen        = 0x02,
-        eLayerDither        = 0x04,
-        eLayerFilter        = 0x08,
-        eLayerBlurFreeze    = 0x10
-    };
-
-    enum {
-        eOrientationDefault     = 0,
-        eOrientation90          = 1,
-        eOrientation180         = 2,
-        eOrientation270         = 3,
-        eOrientationUnchanged   = 4,
-        eOrientationSwapMask    = 0x01
-    };
-
-    enum {
-        eSynchronous            = 0x01,
-    };
-
-    enum {
-        eElectronBeamAnimationOn  = 0x01,
-        eElectronBeamAnimationOff = 0x10
-    };
-
-    enum {
-        eDisplayIdMain = 0
+        eDisplayIdMain = 0,
+        eDisplayIdHdmi = 1
     };
 
     /* create connection with surface flinger, requires
@@ -109,46 +62,59 @@
      */
     virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc() = 0;
 
-    /* retrieve the control block */
-    virtual sp<IMemoryHeap> getCblk() const = 0;
+    /* return an IDisplayEventConnection */
+    virtual sp<IDisplayEventConnection> createDisplayEventConnection() = 0;
+
+    /* create a display
+     * requires ACCESS_SURFACE_FLINGER permission.
+     */
+    virtual sp<IBinder> createDisplay() = 0;
+
+    /* get the token for the existing default displays. possible values
+     * for id are eDisplayIdMain and eDisplayIdHdmi.
+     */
+    virtual sp<IBinder> getBuiltInDisplay(int32_t id) = 0;
 
     /* open/close transactions. requires ACCESS_SURFACE_FLINGER permission */
     virtual void setTransactionState(const Vector<ComposerState>& state,
-            int orientation, uint32_t flags) = 0;
+            const Vector<DisplayState>& displays, uint32_t flags) = 0;
 
     /* signal that we're done booting.
      * Requires ACCESS_SURFACE_FLINGER permission
      */
     virtual void bootFinished() = 0;
 
-    /* Capture the specified screen. requires READ_FRAME_BUFFER permission
-     * This function will fail if there is a secure window on screen.
-     */
-    virtual status_t captureScreen(DisplayID dpy,
-            sp<IMemoryHeap>* heap,
-            uint32_t* width, uint32_t* height, PixelFormat* format,
-            uint32_t reqWidth, uint32_t reqHeight,
-            uint32_t minLayerZ, uint32_t maxLayerZ) = 0;
-
-    /* triggers screen off animation */
-    virtual status_t turnElectronBeamOff(int32_t mode) = 0;
-
-    /* triggers screen on animation */
-    virtual status_t turnElectronBeamOn(int32_t mode) = 0;
-
     /* verify that an ISurfaceTexture was created by SurfaceFlinger.
      */
     virtual bool authenticateSurfaceTexture(
             const sp<ISurfaceTexture>& surface) const = 0;
 
-    /* return an IDisplayEventConnection */
-    virtual sp<IDisplayEventConnection> createDisplayEventConnection() = 0;
+    /* Capture the specified screen. requires READ_FRAME_BUFFER permission
+     * This function will fail if there is a secure window on screen.
+     */
+    virtual status_t captureScreen(const sp<IBinder>& display, sp<IMemoryHeap>* heap,
+            uint32_t* width, uint32_t* height, PixelFormat* format,
+            uint32_t reqWidth, uint32_t reqHeight,
+            uint32_t minLayerZ, uint32_t maxLayerZ) = 0;
+
+
+    /* triggers screen off and waits for it to complete */
+    virtual void blank() = 0;
+
+    /* triggers screen on and waits for it to complete */
+    virtual void unblank() = 0;
+
+    /* returns information about a display
+     * intended to be used to get information about built-in displays */
+    virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) = 0;
+
+    /* connects to an external display */
+    virtual void connectDisplay(const sp<ISurfaceTexture>& display) = 0;
 };
 
 // ----------------------------------------------------------------------------
 
-class BnSurfaceComposer : public BnInterface<ISurfaceComposer>
-{
+class BnSurfaceComposer: public BnInterface<ISurfaceComposer> {
 public:
     enum {
         // Note: BOOT_FINISHED must remain this value, it is called from
@@ -156,20 +122,20 @@
         BOOT_FINISHED = IBinder::FIRST_CALL_TRANSACTION,
         CREATE_CONNECTION,
         CREATE_GRAPHIC_BUFFER_ALLOC,
-        GET_CBLK,
-        SET_TRANSACTION_STATE,
-        SET_ORIENTATION,
-        CAPTURE_SCREEN,
-        TURN_ELECTRON_BEAM_OFF,
-        TURN_ELECTRON_BEAM_ON,
-        AUTHENTICATE_SURFACE,
         CREATE_DISPLAY_EVENT_CONNECTION,
+        CREATE_DISPLAY,
+        GET_BUILT_IN_DISPLAY,
+        SET_TRANSACTION_STATE,
+        AUTHENTICATE_SURFACE,
+        CAPTURE_SCREEN,
+        BLANK,
+        UNBLANK,
+        GET_DISPLAY_INFO,
+        CONNECT_DISPLAY,
     };
 
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
+    virtual status_t onTransact(uint32_t code, const Parcel& data,
+            Parcel* reply, uint32_t flags = 0);
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/gui/ISurfaceComposerClient.h b/include/gui/ISurfaceComposerClient.h
index c793933..39cf090 100644
--- a/include/gui/ISurfaceComposerClient.h
+++ b/include/gui/ISurfaceComposerClient.h
@@ -33,6 +33,7 @@
 
 // ----------------------------------------------------------------------------
 
+// TODO: Remove this declaration, it is only used internally by SurfaceFlinger.
 typedef int32_t    DisplayID;
 
 // ----------------------------------------------------------------------------
@@ -42,9 +43,26 @@
 public:
     DECLARE_META_INTERFACE(SurfaceComposerClient);
 
+    // flags for createSurface()
+    enum { // (keep in sync with Surface.java)
+        eHidden             = 0x00000004,
+        eDestroyBackbuffer  = 0x00000020,
+        eSecure             = 0x00000080,
+        eNonPremultiplied   = 0x00000100,
+        eOpaque             = 0x00000400,
+        eProtectedByApp     = 0x00000800,
+        eProtectedByDRM     = 0x00001000,
+
+        eFXSurfaceNormal    = 0x00000000,
+        eFXSurfaceBlur      = 0x00010000, // deprecated, same as Dim
+        eFXSurfaceDim       = 0x00020000,
+        eFXSurfaceScreenshot= 0x00030000,
+        eFXSurfaceMask      = 0x000F0000,
+    };
+
     struct surface_data_t {
-        int32_t             token;
-        int32_t             identity;
+        int32_t token;
+        int32_t identity;
         status_t readFromParcel(const Parcel& parcel);
         status_t writeToParcel(Parcel* parcel) const;
     };
@@ -52,29 +70,22 @@
     /*
      * Requires ACCESS_SURFACE_FLINGER permission
      */
-    virtual sp<ISurface> createSurface( surface_data_t* data,
-                                        const String8& name,
-                                        DisplayID display,
-                                        uint32_t w,
-                                        uint32_t h,
-                                        PixelFormat format,
-                                        uint32_t flags) = 0;
+    virtual sp<ISurface> createSurface(surface_data_t* data,
+            const String8& name, uint32_t w, uint32_t h,
+            PixelFormat format, uint32_t flags) = 0;
 
     /*
      * Requires ACCESS_SURFACE_FLINGER permission
      */
-    virtual status_t    destroySurface(SurfaceID sid) = 0;
+    virtual status_t destroySurface(SurfaceID sid) = 0;
 };
 
 // ----------------------------------------------------------------------------
 
-class BnSurfaceComposerClient : public BnInterface<ISurfaceComposerClient>
-{
+class BnSurfaceComposerClient: public BnInterface<ISurfaceComposerClient> {
 public:
-    virtual status_t    onTransact( uint32_t code,
-                                    const Parcel& data,
-                                    Parcel* reply,
-                                    uint32_t flags = 0);
+    virtual status_t onTransact(uint32_t code, const Parcel& data,
+            Parcel* reply, uint32_t flags = 0);
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/gui/ISurfaceTexture.h b/include/gui/ISurfaceTexture.h
index 1e33764..8b4025d 100644
--- a/include/gui/ISurfaceTexture.h
+++ b/include/gui/ISurfaceTexture.h
@@ -25,6 +25,7 @@
 
 #include <binder/IInterface.h>
 
+#include <ui/Fence.h>
 #include <ui/GraphicBuffer.h>
 #include <ui/Rect.h>
 
@@ -67,8 +68,13 @@
     // in the contents of its associated buffer contents and call queueBuffer.
     // If dequeueBuffer return BUFFER_NEEDS_REALLOCATION, the client is
     // expected to call requestBuffer immediately.
-    virtual status_t dequeueBuffer(int *slot, uint32_t w, uint32_t h,
-            uint32_t format, uint32_t usage) = 0;
+    //
+    // The fence parameter will be updated to hold the fence associated with
+    // the buffer. The contents of the buffer must not be overwritten until the
+    // fence signals. If the fence is NULL, the buffer may be written
+    // immediately.
+    virtual status_t dequeueBuffer(int *slot, sp<Fence>& fence,
+            uint32_t w, uint32_t h, uint32_t format, uint32_t usage) = 0;
 
     // queueBuffer indicates that the client has finished filling in the
     // contents of the buffer associated with slot and transfers ownership of
@@ -83,24 +89,37 @@
     // and height of the window and current transform applied to buffers,
     // respectively.
 
-    // QueueBufferInput must be a POD structure
-    struct QueueBufferInput {
+    struct QueueBufferInput : public Flattenable {
+        inline QueueBufferInput(const Parcel& parcel);
         inline QueueBufferInput(int64_t timestamp,
-                const Rect& crop, int scalingMode, uint32_t transform)
+                const Rect& crop, int scalingMode, uint32_t transform,
+                sp<Fence> fence)
         : timestamp(timestamp), crop(crop), scalingMode(scalingMode),
-          transform(transform) { }
+          transform(transform), fence(fence) { }
         inline void deflate(int64_t* outTimestamp, Rect* outCrop,
-                int* outScalingMode, uint32_t* outTransform) const {
+                int* outScalingMode, uint32_t* outTransform,
+                sp<Fence>* outFence) const {
             *outTimestamp = timestamp;
             *outCrop = crop;
             *outScalingMode = scalingMode;
             *outTransform = transform;
+            *outFence = fence;
         }
+
+        // Flattenable interface
+        virtual size_t getFlattenedSize() const;
+        virtual size_t getFdCount() const;
+        virtual status_t flatten(void* buffer, size_t size,
+                int fds[], size_t count) const;
+        virtual status_t unflatten(void const* buffer, size_t size,
+                int fds[], size_t count);
+
     private:
         int64_t timestamp;
         Rect crop;
         int scalingMode;
         uint32_t transform;
+        sp<Fence> fence;
     };
 
     // QueueBufferOutput must be a POD structure
@@ -135,7 +154,7 @@
     // cancelBuffer indicates that the client does not wish to fill in the
     // buffer associated with slot and transfers ownership of the slot back to
     // the server.
-    virtual void cancelBuffer(int slot) = 0;
+    virtual void cancelBuffer(int slot, sp<Fence> fence) = 0;
 
     // query retrieves some information for this surface
     // 'what' tokens allowed are that of android_natives.h
diff --git a/include/gui/Sensor.h b/include/gui/Sensor.h
index e59757a..2af2307 100644
--- a/include/gui/Sensor.h
+++ b/include/gui/Sensor.h
@@ -41,7 +41,7 @@
 
 // ----------------------------------------------------------------------------
 
-class Sensor : public ASensor, public Flattenable
+class Sensor : public ASensor, public LightFlattenable<Sensor>
 {
 public:
     enum {
@@ -54,7 +54,7 @@
 
             Sensor();
             Sensor(struct sensor_t const* hwSensor);
-    virtual ~Sensor();
+            ~Sensor();
 
     const String8& getName() const;
     const String8& getVendor() const;
@@ -68,13 +68,11 @@
     nsecs_t getMinDelayNs() const;
     int32_t getVersion() const;
 
-    // Flattenable interface
-    virtual size_t getFlattenedSize() const;
-    virtual size_t getFdCount() const;
-    virtual status_t flatten(void* buffer, size_t size,
-            int fds[], size_t count) const;
-    virtual status_t unflatten(void const* buffer, size_t size,
-            int fds[], size_t count);
+    // LightFlattenable protocol
+    inline bool isFixedSize() const { return false; }
+    size_t getSize() const;
+    status_t flatten(void* buffer) const;
+    status_t unflatten(void const* buffer, size_t size);
 
 private:
     String8 mName;
diff --git a/include/gui/Surface.h b/include/gui/Surface.h
index 50bdf71..2288fe7 100644
--- a/include/gui/Surface.h
+++ b/include/gui/Surface.h
@@ -60,18 +60,16 @@
     // release surface data from java
     void        clear();
     
+    status_t    setLayerStack(int32_t layerStack);
     status_t    setLayer(int32_t layer);
     status_t    setPosition(int32_t x, int32_t y);
     status_t    setSize(uint32_t w, uint32_t h);
     status_t    hide();
-    status_t    show(int32_t layer = -1);
-    status_t    freeze();
-    status_t    unfreeze();
+    status_t    show();
     status_t    setFlags(uint32_t flags, uint32_t mask);
     status_t    setTransparentRegionHint(const Region& transparent);
     status_t    setAlpha(float alpha=1.0f);
     status_t    setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
-    status_t    setFreezeTint(uint32_t tint);
     status_t    setCrop(const Rect& crop);
 
     static status_t writeSurfaceToParcel(
diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 295bc02..a143d81 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -39,6 +39,7 @@
 class Composer;
 class IMemoryHeap;
 class ISurfaceComposerClient;
+class ISurfaceTexture;
 class Region;
 
 // ---------------------------------------------------------------------------
@@ -59,85 +60,73 @@
     // Forcibly remove connection before all references have gone away.
     void        dispose();
 
+    // callback when the composer is dies
+    status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
+            void* cookie = NULL, uint32_t flags = 0);
+
+    // Get information about a display
+    static status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info);
+
+    // TODO: Remove me.  Do not use.
+    // This is a compatibility shim for one product whose drivers are depending on
+    // this legacy function (when they shouldn't).
+    static status_t getDisplayInfo(int32_t displayId, DisplayInfo* info);
+
     // ------------------------------------------------------------------------
     // surface creation / destruction
 
     //! Create a surface
     sp<SurfaceControl> createSurface(
             const String8& name,// name of the surface
-            DisplayID display,  // Display to create this surface on
             uint32_t w,         // width in pixel
             uint32_t h,         // height in pixel
             PixelFormat format, // pixel-format desired
             uint32_t flags = 0  // usage flags
     );
 
-    sp<SurfaceControl> createSurface(
-            DisplayID display,  // Display to create this surface on
-            uint32_t w,         // width in pixel
-            uint32_t h,         // height in pixel
-            PixelFormat format, // pixel-format desired
-            uint32_t flags = 0  // usage flags
-    );
+    //! Create a display
+    static sp<IBinder> createDisplay();
 
+    //! Get the token for the existing default displays.
+    //! Possible values for id are eDisplayIdMain and eDisplayIdHdmi.
+    static sp<IBinder> getBuiltInDisplay(int32_t id);
 
     // ------------------------------------------------------------------------
     // Composer parameters
     // All composer parameters must be changed within a transaction
     // several surfaces can be updated in one transaction, all changes are
     // committed at once when the transaction is closed.
-    // closeGlobalTransaction() usually requires an IPC with the server.
+    // closeGlobalTransaction() requires an IPC with the server.
 
     //! Open a composer transaction on all active SurfaceComposerClients.
     static void openGlobalTransaction();
         
     //! Close a composer transaction on all active SurfaceComposerClients.
     static void closeGlobalTransaction(bool synchronous = false);
-    
-    //! Freeze the specified display but not transactions.
-    static status_t freezeDisplay(DisplayID dpy, uint32_t flags = 0);
-        
-    //! Resume updates on the specified display.
-    static status_t unfreezeDisplay(DisplayID dpy, uint32_t flags = 0);
-
-    //! Set the orientation of the given display
-    static int setOrientation(DisplayID dpy, int orientation, uint32_t flags);
-
-    // Query the number of displays
-    static ssize_t getNumberOfDisplays();
-
-    // Get information about a display
-    static status_t getDisplayInfo(DisplayID dpy, DisplayInfo* info);
-    static ssize_t getDisplayWidth(DisplayID dpy);
-    static ssize_t getDisplayHeight(DisplayID dpy);
-    static ssize_t getDisplayOrientation(DisplayID dpy);
-
-    static inline sp<IBinder> getBuiltInDisplay(int32_t dpy) {
-        return NULL;
-    }
-
-    static inline status_t getDisplayInfo(const sp<IBinder>& dpy, DisplayInfo* info) {
-        return getDisplayInfo(0, info);
-    }
-
-    status_t linkToComposerDeath(const sp<IBinder::DeathRecipient>& recipient,
-            void* cookie = NULL, uint32_t flags = 0);
 
     status_t    hide(SurfaceID id);
-    status_t    show(SurfaceID id, int32_t layer = -1);
-    status_t    freeze(SurfaceID id);
-    status_t    unfreeze(SurfaceID id);
+    status_t    show(SurfaceID id);
     status_t    setFlags(SurfaceID id, uint32_t flags, uint32_t mask);
     status_t    setTransparentRegionHint(SurfaceID id, const Region& transparent);
     status_t    setLayer(SurfaceID id, int32_t layer);
     status_t    setAlpha(SurfaceID id, float alpha=1.0f);
-    status_t    setFreezeTint(SurfaceID id, uint32_t tint);
     status_t    setMatrix(SurfaceID id, float dsdx, float dtdx, float dsdy, float dtdy);
     status_t    setPosition(SurfaceID id, float x, float y);
     status_t    setSize(SurfaceID id, uint32_t w, uint32_t h);
     status_t    setCrop(SurfaceID id, const Rect& crop);
+    status_t    setLayerStack(SurfaceID id, uint32_t layerStack);
     status_t    destroySurface(SurfaceID sid);
 
+    static void setDisplaySurface(const sp<IBinder>& token,
+            const sp<ISurfaceTexture>& surface);
+    static void setDisplayLayerStack(const sp<IBinder>& token,
+            uint32_t layerStack);
+    static void setDisplayOrientation(const sp<IBinder>& token,
+            uint32_t orientation);
+    static void setDisplayViewport(const sp<IBinder>& token,
+            const Rect& viewport);
+    static void setDisplayFrame(const sp<IBinder>& token, const Rect& frame);
+
 private:
     virtual void onFirstRef();
     Composer& getComposer();
@@ -160,9 +149,11 @@
     ScreenshotClient();
 
     // frees the previous screenshot and capture a new one
-    status_t update();
-    status_t update(uint32_t reqWidth, uint32_t reqHeight);
-    status_t update(uint32_t reqWidth, uint32_t reqHeight,
+    status_t update(const sp<IBinder>& display);
+    status_t update(const sp<IBinder>& display,
+            uint32_t reqWidth, uint32_t reqHeight);
+    status_t update(const sp<IBinder>& display,
+            uint32_t reqWidth, uint32_t reqHeight,
             uint32_t minLayerZ, uint32_t maxLayerZ);
 
     // release memory occupied by the screenshot
diff --git a/include/gui/SurfaceTexture.h b/include/gui/SurfaceTexture.h
index 2635e2f..98741c5 100644
--- a/include/gui/SurfaceTexture.h
+++ b/include/gui/SurfaceTexture.h
@@ -24,6 +24,7 @@
 
 #include <gui/ISurfaceTexture.h>
 #include <gui/BufferQueue.h>
+#include <gui/ConsumerBase.h>
 
 #include <ui/GraphicBuffer.h>
 
@@ -39,20 +40,9 @@
 
 class String8;
 
-class SurfaceTexture : public virtual RefBase,
-        protected BufferQueue::ConsumerListener {
+class SurfaceTexture : public ConsumerBase {
 public:
-    struct FrameAvailableListener : public virtual RefBase {
-        // onFrameAvailable() is called each time an additional frame becomes
-        // available for consumption. This means that frames that are queued
-        // while in asynchronous mode only trigger the callback if no previous
-        // frames are pending. Frames queued while in synchronous mode always
-        // trigger the callback.
-        //
-        // This is called without any lock held and can be called concurrently
-        // by multiple threads.
-        virtual void onFrameAvailable() = 0;
-    };
+    typedef ConsumerBase::FrameAvailableListener FrameAvailableListener;
 
     // SurfaceTexture constructs a new SurfaceTexture object. tex indicates the
     // name of the OpenGL ES texture to which images are to be streamed.
@@ -82,8 +72,6 @@
             GLenum texTarget = GL_TEXTURE_EXTERNAL_OES, bool useFenceSync = true,
             const sp<BufferQueue> &bufferQueue = 0);
 
-    virtual ~SurfaceTexture();
-
     // updateTexImage sets the image contents of the target texture to that of
     // the most recently queued buffer.
     //
@@ -91,6 +79,14 @@
     // target texture belongs is bound to the calling thread.
     status_t updateTexImage();
 
+    // setReleaseFence stores a fence file descriptor that will signal when the
+    // current buffer is no longer being read. This fence will be returned to
+    // the producer when the current buffer is released by updateTexImage().
+    // Multiple fences can be set for a given buffer; they will be merged into
+    // a single union fence. The SurfaceTexture will close the file descriptor
+    // when finished with it.
+    void setReleaseFence(int fenceFd);
+
     // setBufferCountServer set the buffer count. If the client has requested
     // a buffer count using setBufferCount, the server-buffer count will
     // take effect once the client sets the count back to zero.
@@ -124,16 +120,6 @@
     // documented by the source.
     int64_t getTimestamp();
 
-    // setFrameAvailableListener sets the listener object that will be notified
-    // when a new frame becomes available.
-    void setFrameAvailableListener(const sp<FrameAvailableListener>& listener);
-
-    // getAllocator retrieves the binder object that must be referenced as long
-    // as the GraphicBuffers dequeued from this SurfaceTexture are referenced.
-    // Holding this binder reference prevents SurfaceFlinger from freeing the
-    // buffers before the client is done with them.
-    sp<IBinder> getAllocator();
-
     // setDefaultBufferSize is used to set the size of buffers returned by
     // requestBuffers when a with and height of zero is requested.
     // A call to setDefaultBufferSize() may trigger requestBuffers() to
@@ -164,21 +150,14 @@
     // getCurrentScalingMode returns the scaling mode of the current buffer.
     uint32_t getCurrentScalingMode() const;
 
+    // getCurrentFence returns the fence indicating when the current buffer is
+    // ready to be read from.
+    sp<Fence> getCurrentFence() const;
+
     // isSynchronousMode returns whether the SurfaceTexture is currently in
     // synchronous mode.
     bool isSynchronousMode() const;
 
-    // abandon frees all the buffers and puts the SurfaceTexture into the
-    // 'abandoned' state.  Once put in this state the SurfaceTexture can never
-    // leave it.  When in the 'abandoned' state, all methods of the
-    // ISurfaceTexture interface will fail with the NO_INIT error.
-    //
-    // Note that while calling this method causes all the buffers to be freed
-    // from the perspective of the the SurfaceTexture, if there are additional
-    // references on the buffers (e.g. if a buffer is referenced by a client or
-    // by OpenGL ES as a texture) then those buffer will remain allocated.
-    void abandon();
-
     // set the name of the SurfaceTexture that will be used to identify it in
     // log messages.
     void setName(const String8& name);
@@ -192,7 +171,9 @@
 
     // getBufferQueue returns the BufferQueue object to which this
     // SurfaceTexture is connected.
-    sp<BufferQueue> getBufferQueue() const;
+    sp<BufferQueue> getBufferQueue() const {
+        return mBufferQueue;
+    }
 
     // detachFromContext detaches the SurfaceTexture from the calling thread's
     // current OpenGL ES context.  This context must be the same as the context
@@ -221,17 +202,25 @@
     // current at the time of the last call to detachFromContext.
     status_t attachToContext(GLuint tex);
 
-    // dump our state in a String
-    virtual void dump(String8& result) const;
-    virtual void dump(String8& result, const char* prefix, char* buffer, size_t SIZE) const;
-
 protected:
 
-    // Implementation of the BufferQueue::ConsumerListener interface.  These
-    // calls are used to notify the SurfaceTexture of asynchronous events in the
-    // BufferQueue.
-    virtual void onFrameAvailable();
-    virtual void onBuffersReleased();
+    // abandonLocked overrides the ConsumerBase method to clear
+    // mCurrentTextureBuf in addition to the ConsumerBase behavior.
+    virtual void abandonLocked();
+
+    // dumpLocked overrides the ConsumerBase method to dump SurfaceTexture-
+    // specific info in addition to the ConsumerBase behavior.
+    virtual void dumpLocked(String8& result, const char* prefix, char* buffer,
+           size_t size) const;
+
+    // acquireBufferLocked overrides the ConsumerBase method to update the
+    // mEglSlots array in addition to the ConsumerBase behavior.
+    virtual status_t acquireBufferLocked(BufferQueue::BufferItem *item);
+
+    // releaseBufferLocked overrides the ConsumerBase method to update the
+    // mEglSlots array in addition to the ConsumerBase.
+    virtual status_t releaseBufferLocked(int buf, EGLDisplay display,
+           EGLSyncKHR eglFence, const sp<Fence>& fence);
 
     static bool isExternalFormat(uint32_t format);
 
@@ -259,7 +248,7 @@
     // slot and destroy the EGLImage in that slot.  Otherwise it has no effect.
     //
     // This method must be called with mMutex locked.
-    void freeBufferLocked(int slotIndex);
+    virtual void freeBufferLocked(int slotIndex);
 
     // computeCurrentTransformMatrix computes the transform matrix for the
     // current texture.  It uses mCurrentTransform and the current GraphicBuffer
@@ -295,6 +284,9 @@
     // set to each time updateTexImage is called.
     uint32_t mCurrentScalingMode;
 
+    // mCurrentFence is the fence received from BufferQueue in updateTexImage.
+    sp<Fence> mCurrentFence;
+
     // mCurrentTransformMatrix is the transform matrix for the current texture.
     // It gets computed by computeTransformMatrix each time updateTexImage is
     // called.
@@ -336,11 +328,9 @@
     struct EGLSlot {
         EGLSlot()
         : mEglImage(EGL_NO_IMAGE_KHR),
-          mFence(EGL_NO_SYNC_KHR) {
+          mEglFence(EGL_NO_SYNC_KHR) {
         }
 
-        sp<GraphicBuffer> mGraphicBuffer;
-
         // mEglImage is the EGLImage created from mGraphicBuffer.
         EGLImageKHR mEglImage;
 
@@ -348,7 +338,7 @@
         // associated with this buffer slot may be dequeued. It is initialized
         // to EGL_NO_SYNC_KHR when the buffer is created and (optionally, based
         // on a compile-time option) set to a new sync object in updateTexImage.
-        EGLSyncKHR mFence;
+        EGLSyncKHR mEglFence;
     };
 
     // mEglDisplay is the EGLDisplay with which this SurfaceTexture is currently
@@ -370,23 +360,7 @@
     // slot that has not yet been used. The buffer allocated to a slot will also
     // be replaced if the requested buffer usage or geometry differs from that
     // of the buffer allocated to a slot.
-    EGLSlot mEGLSlots[BufferQueue::NUM_BUFFER_SLOTS];
-
-    // mAbandoned indicates that the BufferQueue will no longer be used to
-    // consume images buffers pushed to it using the ISurfaceTexture interface.
-    // It is initialized to false, and set to true in the abandon method.  A
-    // BufferQueue that has been abandoned will return the NO_INIT error from
-    // all ISurfaceTexture methods capable of returning an error.
-    bool mAbandoned;
-
-    // mName is a string used to identify the SurfaceTexture in log messages.
-    // It can be set by the setName method.
-    String8 mName;
-
-    // mFrameAvailableListener is the listener object that will be called when a
-    // new frame becomes available. If it is not NULL it will be called from
-    // queueBuffer.
-    sp<FrameAvailableListener> mFrameAvailableListener;
+    EGLSlot mEglSlots[BufferQueue::NUM_BUFFER_SLOTS];
 
     // mCurrentTexture is the buffer slot index of the buffer that is currently
     // bound to the OpenGL texture. It is initialized to INVALID_BUFFER_SLOT,
@@ -396,22 +370,13 @@
     // reset mCurrentTexture to INVALID_BUFFER_SLOT.
     int mCurrentTexture;
 
-    // The SurfaceTexture has-a BufferQueue and is responsible for creating this object
-    // if none is supplied
-    sp<BufferQueue> mBufferQueue;
-
-    // mAttached indicates whether the SurfaceTexture is currently attached to
+    // mAttached indicates whether the ConsumerBase is currently attached to
     // an OpenGL ES context.  For legacy reasons, this is initialized to true,
-    // indicating that the SurfaceTexture is considered to be attached to
+    // indicating that the ConsumerBase is considered to be attached to
     // whatever context is current at the time of the first updateTexImage call.
     // It is set to false by detachFromContext, and then set to true again by
     // attachToContext.
     bool mAttached;
-
-    // mMutex is the mutex used to prevent concurrent access to the member
-    // variables of SurfaceTexture objects. It must be locked whenever the
-    // member variables are accessed.
-    mutable Mutex mMutex;
 };
 
 // ----------------------------------------------------------------------------
diff --git a/include/gui/SurfaceTextureClient.h b/include/gui/SurfaceTextureClient.h
index 8fa85b6..50fd1ba 100644
--- a/include/gui/SurfaceTextureClient.h
+++ b/include/gui/SurfaceTextureClient.h
@@ -61,14 +61,25 @@
     void init();
 
     // ANativeWindow hooks
-    static int hook_cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int hook_dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
-    static int hook_lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
+    static int hook_cancelBuffer(ANativeWindow* window,
+            ANativeWindowBuffer* buffer, int fenceFd);
+    static int hook_dequeueBuffer(ANativeWindow* window,
+            ANativeWindowBuffer** buffer, int* fenceFd);
     static int hook_perform(ANativeWindow* window, int operation, ...);
     static int hook_query(const ANativeWindow* window, int what, int* value);
-    static int hook_queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
+    static int hook_queueBuffer(ANativeWindow* window,
+            ANativeWindowBuffer* buffer, int fenceFd);
     static int hook_setSwapInterval(ANativeWindow* window, int interval);
 
+    static int hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
+            ANativeWindowBuffer* buffer);
+    static int hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
+            ANativeWindowBuffer** buffer);
+    static int hook_lockBuffer_DEPRECATED(ANativeWindow* window,
+            ANativeWindowBuffer* buffer);
+    static int hook_queueBuffer_DEPRECATED(ANativeWindow* window,
+            ANativeWindowBuffer* buffer);
+
     int dispatchConnect(va_list args);
     int dispatchDisconnect(va_list args);
     int dispatchSetBufferCount(va_list args);
@@ -86,14 +97,15 @@
     int dispatchUnlockAndPost(va_list args);
 
 protected:
-    virtual int cancelBuffer(ANativeWindowBuffer* buffer);
-    virtual int dequeueBuffer(ANativeWindowBuffer** buffer);
-    virtual int lockBuffer(ANativeWindowBuffer* buffer);
+    virtual int dequeueBuffer(ANativeWindowBuffer** buffer, int* fenceFd);
+    virtual int cancelBuffer(ANativeWindowBuffer* buffer, int fenceFd);
+    virtual int queueBuffer(ANativeWindowBuffer* buffer, int fenceFd);
     virtual int perform(int operation, va_list args);
     virtual int query(int what, int* value) const;
-    virtual int queueBuffer(ANativeWindowBuffer* buffer);
     virtual int setSwapInterval(int interval);
 
+    virtual int lockBuffer_DEPRECATED(ANativeWindowBuffer* buffer);
+
     virtual int connect(int api);
     virtual int disconnect(int api);
     virtual int setBufferCount(int bufferCount);
diff --git a/include/media/openmax/OMX_IVCommon.h b/include/media/openmax/OMX_IVCommon.h
index 8bb4ded..effbaae 100644
--- a/include/media/openmax/OMX_IVCommon.h
+++ b/include/media/openmax/OMX_IVCommon.h
@@ -159,6 +159,7 @@
     OMX_COLOR_FormatAndroidOpaque = 0x7F000789,
     OMX_TI_COLOR_FormatYUV420PackedSemiPlanar = 0x7F000100,
     OMX_QCOM_COLOR_FormatYVU420SemiPlanar = 0x7FA30C00,
+    OMX_QCOM_COLOR_FormatYUV420PackedSemiPlanar64x32Tile2m8ka = 0x7FA30C03,
     OMX_COLOR_FormatMax = 0x7FFFFFFF
 } OMX_COLOR_FORMATTYPE;
 
diff --git a/include/private/gui/ComposerService.h b/include/private/gui/ComposerService.h
index d04491a..c2761b8 100644
--- a/include/private/gui/ComposerService.h
+++ b/include/private/gui/ComposerService.h
@@ -30,7 +30,6 @@
 
 class IMemoryHeap;
 class ISurfaceComposer;
-class surface_flinger_cblk_t;
 
 // ---------------------------------------------------------------------------
 
@@ -38,13 +37,10 @@
 {
     // these are constants
     sp<ISurfaceComposer> mComposerService;
-    sp<IMemoryHeap> mServerCblkMemory;
-    surface_flinger_cblk_t volatile* mServerCblk;
     ComposerService();
     friend class Singleton<ComposerService>;
 public:
     static sp<ISurfaceComposer> getComposerService();
-    static surface_flinger_cblk_t const volatile * getControlBlock();
 };
 
 // ---------------------------------------------------------------------------
diff --git a/include/private/gui/LayerState.h b/include/private/gui/LayerState.h
index 9151c11..65d9eb3 100644
--- a/include/private/gui/LayerState.h
+++ b/include/private/gui/LayerState.h
@@ -33,10 +33,27 @@
 
 struct layer_state_t {
 
+
+    enum {
+        eLayerHidden        = 0x01,
+    };
+
+    enum {
+        ePositionChanged            = 0x00000001,
+        eLayerChanged               = 0x00000002,
+        eSizeChanged                = 0x00000004,
+        eAlphaChanged               = 0x00000008,
+        eMatrixChanged              = 0x00000010,
+        eTransparentRegionChanged   = 0x00000020,
+        eVisibilityChanged          = 0x00000040,
+        eLayerStackChanged          = 0x00000080,
+        eCropChanged                = 0x00000100,
+    };
+
     layer_state_t()
         :   surface(0), what(0),
-            x(0), y(0), z(0), w(0), h(0),
-            alpha(0), tint(0), flags(0), mask(0),
+            x(0), y(0), z(0), w(0), h(0), layerStack(0),
+            alpha(0), flags(0), mask(0),
             reserved(0)
     {
         matrix.dsdx = matrix.dtdy = 1.0f;
@@ -60,8 +77,8 @@
             uint32_t        z;
             uint32_t        w;
             uint32_t        h;
+            uint32_t        layerStack;
             float           alpha;
-            uint32_t        tint;
             uint8_t         flags;
             uint8_t         mask;
             uint8_t         reserved;
@@ -78,6 +95,36 @@
     status_t    read(const Parcel& input);
 };
 
+struct DisplayState {
+
+    enum {
+        eOrientationDefault     = 0,
+        eOrientation90          = 1,
+        eOrientation180         = 2,
+        eOrientation270         = 3,
+        eOrientationUnchanged   = 4,
+        eOrientationSwapMask    = 0x01
+    };
+
+    enum {
+        eSurfaceChanged     = 0x01,
+        eLayerStackChanged  = 0x02,
+        eOrientationChanged = 0x04,
+        eViewportChanged    = 0x08,
+        eFrameChanged       = 0x10
+    };
+
+    uint32_t what;
+    sp<IBinder> token;
+    sp<ISurfaceTexture> surface;
+    uint32_t layerStack;
+    uint32_t orientation;
+    Rect viewport;
+    Rect frame;
+    status_t write(Parcel& output) const;
+    status_t read(const Parcel& input);
+};
+
 }; // namespace android
 
 #endif // ANDROID_SF_LAYER_STATE_H
diff --git a/include/private/gui/SharedBufferStack.h b/include/private/gui/SharedBufferStack.h
deleted file mode 100644
index 0da03d1..0000000
--- a/include/private/gui/SharedBufferStack.h
+++ /dev/null
@@ -1,59 +0,0 @@
-/*
- * 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_SF_SHARED_BUFFER_STACK_H
-#define ANDROID_SF_SHARED_BUFFER_STACK_H
-
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <utils/Debug.h>
-
-namespace android {
-// ---------------------------------------------------------------------------
-
-#define NUM_DISPLAY_MAX 4
-
-struct display_cblk_t
-{
-    uint16_t    w;
-    uint16_t    h;
-    uint8_t     format;
-    uint8_t     orientation;
-    uint8_t     reserved[2];
-    float       fps;
-    float       density;
-    float       xdpi;
-    float       ydpi;
-    uint32_t    pad[2];
-};
-
-struct surface_flinger_cblk_t   // 4KB max
-{
-    uint8_t         connected;
-    uint8_t         reserved[3];
-    uint32_t        pad[7];
-    display_cblk_t  displays[NUM_DISPLAY_MAX];
-};
-
-// ---------------------------------------------------------------------------
-
-COMPILE_TIME_ASSERT(sizeof(surface_flinger_cblk_t) <= 4096)
-
-// ---------------------------------------------------------------------------
-}; // namespace android
-
-#endif /* ANDROID_SF_SHARED_BUFFER_STACK_H */
diff --git a/include/ui/DisplayInfo.h b/include/ui/DisplayInfo.h
index edd28a6..c7dc354 100644
--- a/include/ui/DisplayInfo.h
+++ b/include/ui/DisplayInfo.h
@@ -14,7 +14,6 @@
  * limitations under the License.
  */
 
-
 #ifndef ANDROID_UI_DISPLAY_INFO_H
 #define ANDROID_UI_DISPLAY_INFO_H
 
@@ -26,15 +25,16 @@
 namespace android {
 
 struct DisplayInfo {
-    uint32_t            w;
-    uint32_t            h;
-    PixelFormatInfo     pixelFormatInfo;
-    uint8_t             orientation;
-    uint8_t             reserved[3];
-    float               fps;
-    float               density;
-    float               xdpi;
-    float               ydpi;
+    uint32_t w;
+    uint32_t h;
+    float xdpi;
+    float ydpi;
+    float fps;
+    float density;
+    uint8_t orientation;
+    uint8_t reserved[3];
+    // TODO: this needs to go away (currently needed only by webkit)
+    PixelFormatInfo pixelFormatInfo;
 };
 
 /* Display orientations as defined in Surface.java and ISurfaceComposer.h. */
@@ -45,8 +45,6 @@
     DISPLAY_ORIENTATION_270 = 3
 };
 
-
 }; // namespace android
 
 #endif // ANDROID_COMPOSER_DISPLAY_INFO_H
-
diff --git a/include/ui/Fence.h b/include/ui/Fence.h
new file mode 100644
index 0000000..b516a22
--- /dev/null
+++ b/include/ui/Fence.h
@@ -0,0 +1,104 @@
+/*
+ * Copyright (C) 2012 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_FENCE_H
+#define ANDROID_FENCE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <ui/ANativeObjectBase.h>
+#include <ui/PixelFormat.h>
+#include <ui/Rect.h>
+#include <utils/Flattenable.h>
+#include <utils/String8.h>
+
+struct ANativeWindowBuffer;
+
+namespace android {
+
+// ===========================================================================
+// Fence
+// ===========================================================================
+
+class Fence
+    : public LightRefBase<Fence>, public Flattenable
+{
+public:
+    static const sp<Fence> NO_FENCE;
+
+    // Construct a new Fence object with an invalid file descriptor.  This
+    // should be done when the Fence object will be set up by unflattening
+    // serialized data.
+    Fence();
+
+    // Construct a new Fence object to manage a given fence file descriptor.
+    // When the new Fence object is destructed the file descriptor will be
+    // closed.
+    Fence(int fenceFd);
+
+    // Check whether the Fence has an open fence file descriptor. Most Fence
+    // methods treat an invalid file descriptor just like a valid fence that
+    // is already signalled, so using this is usually not necessary.
+    bool isValid() const { return mFenceFd != -1; }
+
+    // wait waits for up to timeout milliseconds for the fence to signal.  If
+    // the fence signals then NO_ERROR is returned. If the timeout expires
+    // before the fence signals then -ETIME is returned.  A timeout of
+    // TIMEOUT_NEVER may be used to indicate that the call should wait
+    // indefinitely for the fence to signal.
+    int wait(unsigned int timeout);
+
+    // TIMEOUT_NEVER may be passed to the wait method to indicate that it
+    // should wait indefinitely for the fence to signal.
+    enum { TIMEOUT_NEVER = -1 };
+
+    // merge combines two Fence objects, creating a new Fence object that
+    // becomes signaled when both f1 and f2 are signaled (even if f1 or f2 is
+    // destroyed before it becomes signaled).  The name argument specifies the
+    // human-readable name to associated with the new Fence object.
+    static sp<Fence> merge(const String8& name, const sp<Fence>& f1,
+            const sp<Fence>& f2);
+
+    // Return a duplicate of the fence file descriptor. The caller is
+    // responsible for closing the returned file descriptor. On error, -1 will
+    // be returned and errno will indicate the problem.
+    int dup() const;
+
+    // Flattenable interface
+    size_t getFlattenedSize() const;
+    size_t getFdCount() const;
+    status_t flatten(void* buffer, size_t size,
+            int fds[], size_t count) const;
+    status_t unflatten(void const* buffer, size_t size,
+            int fds[], size_t count);
+
+private:
+    // Only allow instantiation using ref counting.
+    friend class LightRefBase<Fence>;
+    virtual ~Fence();
+
+    // Disallow copying
+    Fence(const Fence& rhs);
+    Fence& operator = (const Fence& rhs);
+    const Fence& operator = (const Fence& rhs) const;
+
+    int mFenceFd;
+};
+
+}; // namespace android
+
+#endif // ANDROID_FENCE_H
diff --git a/include/ui/FramebufferNativeWindow.h b/include/ui/FramebufferNativeWindow.h
index b202b95..5ec738f 100644
--- a/include/ui/FramebufferNativeWindow.h
+++ b/include/ui/FramebufferNativeWindow.h
@@ -28,7 +28,8 @@
 #include <ui/ANativeObjectBase.h>
 #include <ui/Rect.h>
 
-#define NUM_FRAME_BUFFERS  2
+#define MIN_NUM_FRAME_BUFFERS  2
+#define MAX_NUM_FRAME_BUFFERS  3
 
 extern "C" EGLNativeWindowType android_createDisplaySurface(void);
 
@@ -65,16 +66,19 @@
     friend class LightRefBase<FramebufferNativeWindow>;    
     ~FramebufferNativeWindow(); // this class cannot be overloaded
     static int setSwapInterval(ANativeWindow* window, int interval);
-    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
-    static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
+    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer, int* fenceFd);
+    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer, int fenceFd);
     static int query(const ANativeWindow* window, int what, int* value);
     static int perform(ANativeWindow* window, int operation, ...);
-    
+
+    static int dequeueBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer** buffer);
+    static int queueBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer* buffer);
+    static int lockBuffer_DEPRECATED(ANativeWindow* window, ANativeWindowBuffer* buffer);
+
     framebuffer_device_t* fbDev;
     alloc_device_t* grDev;
 
-    sp<NativeBuffer> buffers[NUM_FRAME_BUFFERS];
+    sp<NativeBuffer> buffers[MAX_NUM_FRAME_BUFFERS];
     sp<NativeBuffer> front;
     
     mutable Mutex mutex;
diff --git a/include/ui/Point.h b/include/ui/Point.h
index 1653120..1d7f64d 100644
--- a/include/ui/Point.h
+++ b/include/ui/Point.h
@@ -17,11 +17,12 @@
 #ifndef ANDROID_UI_POINT
 #define ANDROID_UI_POINT
 
+#include <utils/Flattenable.h>
 #include <utils/TypeHelpers.h>
 
 namespace android {
 
-class Point
+class Point : public LightFlattenablePod<Point>
 {
 public:
     int x;
diff --git a/include/ui/Rect.h b/include/ui/Rect.h
index c2c2675..47d37b6 100644
--- a/include/ui/Rect.h
+++ b/include/ui/Rect.h
@@ -17,6 +17,7 @@
 #ifndef ANDROID_UI_RECT
 #define ANDROID_UI_RECT
 
+#include <utils/Flattenable.h>
 #include <utils/TypeHelpers.h>
 #include <ui/Point.h>
 
@@ -24,7 +25,7 @@
 
 namespace android {
 
-class Rect : public ARect
+class Rect : public ARect, public LightFlattenablePod<Rect>
 {
 public:
     typedef ARect::value_type value_type;
diff --git a/include/ui/Region.h b/include/ui/Region.h
index f242f18..f0819af 100644
--- a/include/ui/Region.h
+++ b/include/ui/Region.h
@@ -23,6 +23,7 @@
 #include <utils/Vector.h>
 
 #include <ui/Rect.h>
+#include <utils/Flattenable.h>
 
 namespace android {
 // ---------------------------------------------------------------------------
@@ -30,13 +31,12 @@
 class String8;
 
 // ---------------------------------------------------------------------------
-class Region
+class Region : public LightFlattenable<Region>
 {
 public:
                         Region();
                         Region(const Region& rhs);
     explicit            Region(const Rect& rhs);
-    explicit            Region(const void* buffer);
                         ~Region();
                         
         Region& operator = (const Region& rhs);
@@ -122,12 +122,10 @@
             // be sorted in Y and X and must not make the region invalid.
             void        addRectUnchecked(int l, int t, int r, int b);
 
-            // flatten/unflatten a region to/from a raw buffer
-            ssize_t     write(void* buffer, size_t size) const;
-    static  ssize_t     writeEmpty(void* buffer, size_t size);
-
-            ssize_t     read(const void* buffer);
-    static  bool        isEmpty(void* buffer);
+    inline  bool        isFixedSize() const { return false; }
+            size_t      getSize() const;
+            status_t    flatten(void* buffer) const;
+            status_t    unflatten(void const* buffer, size_t size);
 
     void        dump(String8& out, const char* what, uint32_t flags=0) const;
     void        dump(const char* what, uint32_t flags=0) const;
diff --git a/include/utils/Flattenable.h b/include/utils/Flattenable.h
index 852be3b..e40d289 100644
--- a/include/utils/Flattenable.h
+++ b/include/utils/Flattenable.h
@@ -24,6 +24,11 @@
 
 namespace android {
 
+/*
+ * The Flattenable interface allows an object to serialize itself out
+ * to a byte-buffer and an array of file descriptors.
+ */
+
 class Flattenable
 {
 public:
@@ -56,6 +61,73 @@
 
 };
 
+/*
+ * LightFlattenable is a protocol allowing object to serialize themselves out
+ * to a byte-buffer.
+ *
+ * LightFlattenable objects must implement this protocol.
+ *
+ * LightFlattenable doesn't require the object to be virtual.
+ */
+template <typename T>
+class LightFlattenable {
+public:
+    // returns whether this object always flatten into the same size.
+    // for efficiency, this should always be inline.
+    inline bool isFixedSize() const;
+
+    // returns size in bytes of the flattened object. must be a constant.
+    inline size_t getSize() const;
+
+    // flattens the object into buffer.
+    inline status_t flatten(void* buffer) const;
+
+    // unflattens the object from buffer of given size.
+    inline status_t unflatten(void const* buffer, size_t size);
+};
+
+template <typename T>
+inline bool LightFlattenable<T>::isFixedSize() const {
+    return static_cast<T const*>(this)->T::isFixedSize();
+}
+template <typename T>
+inline size_t LightFlattenable<T>::getSize() const {
+    return static_cast<T const*>(this)->T::getSize();
+}
+template <typename T>
+inline status_t LightFlattenable<T>::flatten(void* buffer) const {
+    return static_cast<T const*>(this)->T::flatten(buffer);
+}
+template <typename T>
+inline status_t LightFlattenable<T>::unflatten(void const* buffer, size_t size) {
+    return static_cast<T*>(this)->T::unflatten(buffer, size);
+}
+
+/*
+ * LightFlattenablePod is an implementation of the LightFlattenable protocol
+ * for POD (plain-old-data) objects.
+ */
+template <typename T>
+class LightFlattenablePod : public LightFlattenable<T> {
+public:
+    inline bool isFixedSize() const {
+        return true;
+    }
+
+    inline size_t getSize() const {
+        return sizeof(T);
+    }
+    inline status_t flatten(void* buffer) const {
+        *reinterpret_cast<T*>(buffer) = *static_cast<T const*>(this);
+        return NO_ERROR;
+    }
+    inline status_t unflatten(void const* buffer, size_t) {
+        *static_cast<T*>(this) = *reinterpret_cast<T const*>(buffer);
+        return NO_ERROR;
+    }
+};
+
+
 }; // namespace android
 
 
diff --git a/include/utils/KeyedVector.h b/include/utils/KeyedVector.h
index 20575ee..c4faae0 100644
--- a/include/utils/KeyedVector.h
+++ b/include/utils/KeyedVector.h
@@ -21,6 +21,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <cutils/log.h>
+
 #include <utils/SortedVector.h>
 #include <utils/TypeHelpers.h>
 #include <utils/Errors.h>
@@ -50,13 +52,16 @@
 
     //! returns number of items in the vector
     inline  size_t          size() const                { return mVector.size(); }
-    //! returns wether or not the vector is empty
+    //! returns whether or not the vector is empty
     inline  bool            isEmpty() const             { return mVector.isEmpty(); }
     //! returns how many items can be stored without reallocating the backing store
     inline  size_t          capacity() const            { return mVector.capacity(); }
-    //! setst the capacity. capacity can never be reduced less than size()
+    //! sets the capacity. capacity can never be reduced less than size()
     inline ssize_t          setCapacity(size_t size)    { return mVector.setCapacity(size); }
-    
+
+    // returns true if the arguments is known to be identical to this vector
+    inline bool isIdenticalTo(const KeyedVector& rhs) const;
+
     /*! 
      * accessors
      */
@@ -64,6 +69,7 @@
             const VALUE&    valueAt(size_t index) const;
             const KEY&      keyAt(size_t index) const;
             ssize_t         indexOfKey(const KEY& key) const;
+            const VALUE&    operator[] (size_t index) const;
 
     /*!
      * modifying the array
@@ -123,6 +129,11 @@
 }
 
 template<typename KEY, typename VALUE> inline
+bool KeyedVector<KEY,VALUE>::isIdenticalTo(const KeyedVector<KEY,VALUE>& rhs) const {
+    return mVector.array() == rhs.mVector.array();
+}
+
+template<typename KEY, typename VALUE> inline
 ssize_t KeyedVector<KEY,VALUE>::indexOfKey(const KEY& key) const {
     return mVector.indexOf( key_value_pair_t<KEY,VALUE>(key) );
 }
@@ -130,7 +141,7 @@
 template<typename KEY, typename VALUE> inline
 const VALUE& KeyedVector<KEY,VALUE>::valueFor(const KEY& key) const {
     ssize_t i = this->indexOfKey(key);
-    assert(i>=0);
+    LOG_ALWAYS_FATAL_IF(i<0, "%s: key not found", __PRETTY_FUNCTION__);
     return mVector.itemAt(i).value;
 }
 
@@ -140,6 +151,11 @@
 }
 
 template<typename KEY, typename VALUE> inline
+const VALUE& KeyedVector<KEY,VALUE>::operator[] (size_t index) const {
+    return valueAt(index);
+}
+
+template<typename KEY, typename VALUE> inline
 const KEY& KeyedVector<KEY,VALUE>::keyAt(size_t index) const {
     return mVector.itemAt(index).key;
 }
@@ -147,7 +163,7 @@
 template<typename KEY, typename VALUE> inline
 VALUE& KeyedVector<KEY,VALUE>::editValueFor(const KEY& key) {
     ssize_t i = this->indexOfKey(key);
-    assert(i>=0);
+    LOG_ALWAYS_FATAL_IF(i<0, "%s: key not found", __PRETTY_FUNCTION__);
     return mVector.editItemAt(i).value;
 }
 
diff --git a/include/utils/Log.h b/include/utils/Log.h
index 3c6cc8b..98c441c 100644
--- a/include/utils/Log.h
+++ b/include/utils/Log.h
@@ -29,5 +29,43 @@
 #define _LIBS_UTILS_LOG_H
 
 #include <cutils/log.h>
+#include <sys/types.h>
+
+#ifdef __cplusplus
+
+namespace android {
+
+/*
+ * A very simple utility that yells in the log when an operation takes too long.
+ */
+class LogIfSlow {
+public:
+    LogIfSlow(const char* tag, android_LogPriority priority,
+            int timeoutMillis, const char* message);
+    ~LogIfSlow();
+
+private:
+    const char* const mTag;
+    const android_LogPriority mPriority;
+    const int mTimeoutMillis;
+    const char* const mMessage;
+    const int64_t mStart;
+};
+
+/*
+ * Writes the specified debug log message if this block takes longer than the
+ * specified number of milliseconds to run.  Includes the time actually taken.
+ *
+ * {
+ *     ALOGD_IF_SLOW(50, "Excessive delay doing something.");
+ *     doSomething();
+ * }
+ */
+#define ALOGD_IF_SLOW(timeoutMillis, message) \
+        LogIfSlow _logIfSlow(LOG_TAG, ANDROID_LOG_DEBUG, timeoutMillis, message);
+
+} // namespace android
+
+#endif // __cplusplus
 
 #endif // _LIBS_UTILS_LOG_H
diff --git a/include/utils/SortedVector.h b/include/utils/SortedVector.h
index 2445525..2d3e82a 100644
--- a/include/utils/SortedVector.h
+++ b/include/utils/SortedVector.h
@@ -21,6 +21,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <cutils/log.h>
+
 #include <utils/Vector.h>
 #include <utils/VectorImpl.h>
 #include <utils/TypeHelpers.h>
@@ -61,11 +63,11 @@
 
     //! returns number of items in the vector
     inline  size_t          size() const                { return VectorImpl::size(); }
-    //! returns wether or not the vector is empty
+    //! returns whether or not the vector is empty
     inline  bool            isEmpty() const             { return VectorImpl::isEmpty(); }
     //! returns how many items can be stored without reallocating the backing store
     inline  size_t          capacity() const            { return VectorImpl::capacity(); }
-    //! setst the capacity. capacity can never be reduced less than size()
+    //! sets the capacity. capacity can never be reduced less than size()
     inline  ssize_t         setCapacity(size_t size)    { return VectorImpl::setCapacity(size); }
 
     /*! 
@@ -76,7 +78,7 @@
     inline  const TYPE*     array() const;
 
     //! read-write C-style access. BE VERY CAREFUL when modifying the array
-    //! you ust keep it sorted! You usually don't use this function.
+    //! you must keep it sorted! You usually don't use this function.
             TYPE*           editArray();
 
             //! finds the index of an item
@@ -96,11 +98,9 @@
     inline  const TYPE&     itemAt(size_t index) const;
     //! stack-usage of the vector. returns the top of the stack (last element)
             const TYPE&     top() const;
-    //! same as operator [], but allows to access the vector backward (from the end) with a negative index
-            const TYPE&     mirrorItemAt(ssize_t index) const;
 
     /*!
-     * modifing the array
+     * modifying the array
      */
 
             //! add an item in the right place (and replace the one that is there)
@@ -186,7 +186,9 @@
 
 template<class TYPE> inline
 const TYPE& SortedVector<TYPE>::operator[](size_t index) const {
-    assert( index<size() );
+    LOG_FATAL_IF(index>=size(),
+            "%s: index=%u out of range (%u)", __PRETTY_FUNCTION__,
+            int(index), int(size()));
     return *(array() + index);
 }
 
@@ -196,12 +198,6 @@
 }
 
 template<class TYPE> inline
-const TYPE& SortedVector<TYPE>::mirrorItemAt(ssize_t index) const {
-    assert( (index>0 ? index : -index)<size() );
-    return *(array() + ((index<0) ? (size()-index) : index));
-}
-
-template<class TYPE> inline
 const TYPE& SortedVector<TYPE>::top() const {
     return *(array() + size() - 1);
 }
diff --git a/include/utils/SystemClock.h b/include/utils/SystemClock.h
index 7c319be..d75264c 100644
--- a/include/utils/SystemClock.h
+++ b/include/utils/SystemClock.h
@@ -25,6 +25,7 @@
 int setCurrentTimeMillis(int64_t millis);
 int64_t uptimeMillis();
 int64_t elapsedRealtime();
+int64_t elapsedRealtimeNano();
 
 }; // namespace android
 
diff --git a/include/utils/Timers.h b/include/utils/Timers.h
index 8b4d322..92f66c9 100644
--- a/include/utils/Timers.h
+++ b/include/utils/Timers.h
@@ -78,9 +78,10 @@
     SYSTEM_TIME_REALTIME = 0,  // system-wide realtime clock
     SYSTEM_TIME_MONOTONIC = 1, // monotonic time since unspecified starting point
     SYSTEM_TIME_PROCESS = 2,   // high-resolution per-process clock
-    SYSTEM_TIME_THREAD = 3     // high-resolution per-thread clock
+    SYSTEM_TIME_THREAD = 3,    // high-resolution per-thread clock
+    SYSTEM_TIME_BOOTTIME = 4   // same as SYSTEM_TIME_MONOTONIC, but including CPU suspend time
 };
-    
+
 // return the system-time according to the specified clock
 #ifdef __cplusplus
 nsecs_t systemTime(int clock = SYSTEM_TIME_MONOTONIC);
diff --git a/include/utils/Trace.h b/include/utils/Trace.h
index 4219206..e5cc7ec 100644
--- a/include/utils/Trace.h
+++ b/include/utils/Trace.h
@@ -51,7 +51,8 @@
 #define ATRACE_TAG_SYNC_MANAGER     (1<<7)
 #define ATRACE_TAG_AUDIO            (1<<8)
 #define ATRACE_TAG_VIDEO            (1<<9)
-#define ATRACE_TAG_LAST             ATRACE_TAG_VIDEO
+#define ATRACE_TAG_CAMERA           (1<<10)
+#define ATRACE_TAG_LAST             ATRACE_TAG_CAMERA
 
 #define ATRACE_TAG_VALID_MASK ((ATRACE_TAG_LAST - 1) | ATRACE_TAG_LAST)
 
diff --git a/include/utils/Vector.h b/include/utils/Vector.h
index e39a5b7..7927328 100644
--- a/include/utils/Vector.h
+++ b/include/utils/Vector.h
@@ -21,7 +21,8 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#include <utils/Log.h>
+#include <cutils/log.h>
+
 #include <utils/VectorImpl.h>
 #include <utils/TypeHelpers.h>
 
@@ -72,11 +73,11 @@
 
     //! returns number of items in the vector
     inline  size_t          size() const                { return VectorImpl::size(); }
-    //! returns wether or not the vector is empty
+    //! returns whether or not the vector is empty
     inline  bool            isEmpty() const             { return VectorImpl::isEmpty(); }
     //! returns how many items can be stored without reallocating the backing store
     inline  size_t          capacity() const            { return VectorImpl::capacity(); }
-    //! setst the capacity. capacity can never be reduced less than size()
+    //! sets the capacity. capacity can never be reduced less than size()
     inline  ssize_t         setCapacity(size_t size)    { return VectorImpl::setCapacity(size); }
 
     /*! 
@@ -98,16 +99,14 @@
     inline  const TYPE&     itemAt(size_t index) const;
     //! stack-usage of the vector. returns the top of the stack (last element)
             const TYPE&     top() const;
-    //! same as operator [], but allows to access the vector backward (from the end) with a negative index
-            const TYPE&     mirrorItemAt(ssize_t index) const;
 
     /*!
-     * modifing the array
+     * modifying the array
      */
 
     //! copy-on write support, grants write access to an item
             TYPE&           editItemAt(size_t index);
-    //! grants right acces to the top of the stack (last element)
+    //! grants right access to the top of the stack (last element)
             TYPE&           editTop();
 
             /*! 
@@ -271,8 +270,9 @@
 
 template<class TYPE> inline
 const TYPE& Vector<TYPE>::operator[](size_t index) const {
-    LOG_FATAL_IF( index>=size(),
-                  "itemAt: index %d is past size %d", (int)index, (int)size() );
+    LOG_FATAL_IF(index>=size(),
+            "%s: index=%u out of range (%u)", __PRETTY_FUNCTION__,
+            int(index), int(size()));
     return *(array() + index);
 }
 
@@ -282,14 +282,6 @@
 }
 
 template<class TYPE> inline
-const TYPE& Vector<TYPE>::mirrorItemAt(ssize_t index) const {
-    LOG_FATAL_IF( (index>0 ? index : -index)>=size(),
-                  "mirrorItemAt: index %d is past size %d",
-                  (int)index, (int)size() );
-    return *(array() + ((index<0) ? (size()-index) : index));
-}
-
-template<class TYPE> inline
 const TYPE& Vector<TYPE>::top() const {
     return *(array() + size() - 1);
 }
diff --git a/include/utils/VectorImpl.h b/include/utils/VectorImpl.h
index c4ec2ff..b1224c6 100644
--- a/include/utils/VectorImpl.h
+++ b/include/utils/VectorImpl.h
@@ -104,16 +104,6 @@
     virtual void            do_splat(void* dest, const void* item, size_t num) const = 0;
     virtual void            do_move_forward(void* dest, const void* from, size_t num) const = 0;
     virtual void            do_move_backward(void* dest, const void* from, size_t num) const = 0;
-
-    // take care of FBC...
-    virtual void            reservedVectorImpl1();
-    virtual void            reservedVectorImpl2();
-    virtual void            reservedVectorImpl3();
-    virtual void            reservedVectorImpl4();
-    virtual void            reservedVectorImpl5();
-    virtual void            reservedVectorImpl6();
-    virtual void            reservedVectorImpl7();
-    virtual void            reservedVectorImpl8();
     
 private:
         void* _grow(size_t where, size_t amount);
@@ -165,16 +155,6 @@
 protected:
     virtual int             do_compare(const void* lhs, const void* rhs) const = 0;
 
-    // take care of FBC...
-    virtual void            reservedSortedVectorImpl1();
-    virtual void            reservedSortedVectorImpl2();
-    virtual void            reservedSortedVectorImpl3();
-    virtual void            reservedSortedVectorImpl4();
-    virtual void            reservedSortedVectorImpl5();
-    virtual void            reservedSortedVectorImpl6();
-    virtual void            reservedSortedVectorImpl7();
-    virtual void            reservedSortedVectorImpl8();
-
 private:
             ssize_t         _indexOrderOf(const void* item, size_t* order = 0) const;
 
diff --git a/include/utils/misc.h b/include/utils/misc.h
index d7d5bc1..f1aa432 100644
--- a/include/utils/misc.h
+++ b/include/utils/misc.h
@@ -23,41 +23,12 @@
 #include <sys/time.h>
 #include <utils/Endian.h>
 
-namespace android {
-
 /* get #of elements in a static array */
 #ifndef NELEM
 # define NELEM(x) ((int) (sizeof(x) / sizeof((x)[0])))
 #endif
 
-/*
- * Make a copy of the string, using "new[]" instead of "malloc".  Free the
- * string with delete[].
- *
- * Returns NULL if "str" is NULL.
- */
-char* strdupNew(const char* str);
-
-/*
- * Concatenate an argument vector into a single string.  If argc is >= 0
- * it will be used; if it's < 0 then the last element in the arg vector
- * must be NULL.
- *
- * This inserts a space between each argument.
- *
- * This does not automatically add double quotes around arguments with
- * spaces in them.  This practice is necessary for Win32, because Win32's
- * CreateProcess call is stupid.
- *
- * The caller should delete[] the returned string.
- */
-char* concatArgv(int argc, const char* const argv[]);
-
-/*
- * Count up the number of arguments in "argv".  The count does not include
- * the final NULL entry.
- */
-int countArgv(const char* const argv[]);
+namespace android {
 
 /*
  * Some utility functions for working with files.  These could be made
@@ -79,15 +50,6 @@
 /* get the file's modification date; returns -1 w/errno set on failure */
 time_t getFileModDate(const char* fileName);
 
-/*
- * Round up to the nearest power of 2.  Handy for hash tables.
- */
-unsigned int roundUpPower2(unsigned int val);
-
-void strreverse(char* begin, char* end);
-void k_itoa(int value, char* str, int base);
-char* itoa(int val, int base);
-
 typedef void (*sysprop_change_callback)(void);
 void add_sysprop_change_callback(sysprop_change_callback cb, int priority);
 void report_sysprop_change();
diff --git a/libs/gui/Android.mk b/libs/gui/Android.mk
index 8224847..2bf363f 100644
--- a/libs/gui/Android.mk
+++ b/libs/gui/Android.mk
@@ -4,6 +4,7 @@
 LOCAL_SRC_FILES:= \
 	BitTube.cpp \
 	BufferQueue.cpp \
+	ConsumerBase.cpp \
 	DisplayEventReceiver.cpp \
 	IDisplayEventConnection.cpp \
 	ISensorEventConnection.cpp \
@@ -21,17 +22,18 @@
 	LayerState.cpp \
 	Surface.cpp \
 	SurfaceComposerClient.cpp \
-	DummyConsumer.cpp
+	DummyConsumer.cpp \
+	CpuConsumer.cpp \
+	BufferItemConsumer.cpp
 
 LOCAL_SHARED_LIBRARIES := \
-	libcutils \
-	libutils \
 	libbinder \
-	libhardware \
-	libhardware_legacy \
-	libui \
+	libcutils \
 	libEGL \
 	libGLESv2 \
+	libsync \
+	libui \
+	libutils \
 
 
 LOCAL_MODULE:= libgui
@@ -42,6 +44,9 @@
 ifeq ($(TARGET_BOARD_PLATFORM), s5pc110)
 	LOCAL_CFLAGS += -DUSE_FENCE_SYNC
 endif
+ifeq ($(TARGET_BOARD_PLATFORM), exynos5)
+	LOCAL_CFLAGS += -DUSE_FENCE_SYNC
+endif
 ifneq ($(filter generic%,$(TARGET_DEVICE)),)
     # Emulator build
     LOCAL_CFLAGS += -DUSE_FENCE_SYNC
diff --git a/libs/gui/BufferItemConsumer.cpp b/libs/gui/BufferItemConsumer.cpp
new file mode 100644
index 0000000..218d929
--- /dev/null
+++ b/libs/gui/BufferItemConsumer.cpp
@@ -0,0 +1,93 @@
+/*
+ * Copyright (C) 2012 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_NDEBUG 0
+#define LOG_TAG "BufferItemConsumer"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+#include <utils/Log.h>
+
+#include <gui/BufferItemConsumer.h>
+
+#define BI_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define BI_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define BI_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define BI_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define BI_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
+
+namespace android {
+
+BufferItemConsumer::BufferItemConsumer(uint32_t consumerUsage,
+        int bufferCount, bool synchronousMode) :
+    ConsumerBase(new BufferQueue(true, bufferCount) )
+{
+    mBufferQueue->setConsumerUsageBits(consumerUsage);
+    mBufferQueue->setSynchronousMode(synchronousMode);
+}
+
+BufferItemConsumer::~BufferItemConsumer() {
+}
+
+void BufferItemConsumer::setName(const String8& name) {
+    Mutex::Autolock _l(mMutex);
+    mName = name;
+    mBufferQueue->setConsumerName(name);
+}
+
+status_t BufferItemConsumer::acquireBuffer(BufferItem *item, bool waitForFence) {
+    status_t err;
+
+    if (!item) return BAD_VALUE;
+
+    Mutex::Autolock _l(mMutex);
+
+    err = acquireBufferLocked(item);
+    if (err != OK) {
+        if (err != NO_BUFFER_AVAILABLE) {
+            BI_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
+        }
+        return err;
+    }
+
+    if (waitForFence && item->mFence.get()) {
+        err = item->mFence->wait(Fence::TIMEOUT_NEVER);
+        if (err != OK) {
+            BI_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
+                    strerror(-err), err);
+            return err;
+        }
+    }
+
+    item->mGraphicBuffer = mSlots[item->mBuf].mGraphicBuffer;
+
+    return OK;
+}
+
+status_t BufferItemConsumer::releaseBuffer(const BufferItem &item,
+        const sp<Fence>& releaseFence) {
+    status_t err;
+
+    Mutex::Autolock _l(mMutex);
+
+    err = releaseBufferLocked(item.mBuf, EGL_NO_DISPLAY,
+            EGL_NO_SYNC_KHR, releaseFence);
+    if (err != OK) {
+        BI_LOGE("Failed to release buffer: %s (%d)",
+                strerror(-err), err);
+    }
+    return err;
+}
+
+} // namespace android
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index a0774cf..697635b 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -81,10 +81,10 @@
     }
 }
 
-BufferQueue::BufferQueue(  bool allowSynchronousMode, int bufferCount ) :
+BufferQueue::BufferQueue(bool allowSynchronousMode, int bufferCount,
+        const sp<IGraphicBufferAlloc>& allocator) :
     mDefaultWidth(1),
     mDefaultHeight(1),
-    mPixelFormat(PIXEL_FORMAT_RGBA_8888),
     mMinUndequeuedBuffers(bufferCount),
     mMinAsyncBufferSlots(bufferCount + 1),
     mMinSyncBufferSlots(bufferCount),
@@ -97,7 +97,7 @@
     mAbandoned(false),
     mFrameCounter(0),
     mBufferHasBeenQueued(false),
-    mDefaultBufferFormat(0),
+    mDefaultBufferFormat(PIXEL_FORMAT_RGBA_8888),
     mConsumerUsageBits(0),
     mTransformHint(0)
 {
@@ -105,10 +105,14 @@
     mConsumerName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
 
     ST_LOGV("BufferQueue");
-    sp<ISurfaceComposer> composer(ComposerService::getComposerService());
-    mGraphicBufferAlloc = composer->createGraphicBufferAlloc();
-    if (mGraphicBufferAlloc == 0) {
-        ST_LOGE("createGraphicBufferAlloc() failed in BufferQueue()");
+    if (allocator == NULL) {
+        sp<ISurfaceComposer> composer(ComposerService::getComposerService());
+        mGraphicBufferAlloc = composer->createGraphicBufferAlloc();
+        if (mGraphicBufferAlloc == 0) {
+            ST_LOGE("createGraphicBufferAlloc() failed in BufferQueue()");
+        }
+    } else {
+        mGraphicBufferAlloc = allocator;
     }
 }
 
@@ -120,7 +124,8 @@
     if (bufferCount > NUM_BUFFER_SLOTS)
         return BAD_VALUE;
 
-    // special-case, nothing to do
+    mServerBufferCount = bufferCount;
+
     if (bufferCount == mBufferCount)
         return OK;
 
@@ -128,7 +133,6 @@
         bufferCount >= mBufferCount) {
         // easy, we just have more buffers
         mBufferCount = bufferCount;
-        mServerBufferCount = bufferCount;
         mDequeueCondition.broadcast();
     } else {
         // we're here because we're either
@@ -145,7 +149,6 @@
         // own one. the actual resizing will happen during the next
         // dequeueBuffer.
 
-        mServerBufferCount = bufferCount;
         mDequeueCondition.broadcast();
     }
     return OK;
@@ -255,7 +258,7 @@
         value = mDefaultHeight;
         break;
     case NATIVE_WINDOW_FORMAT:
-        value = mPixelFormat;
+        value = mDefaultBufferFormat;
         break;
     case NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS:
         value = mSynchronousMode ?
@@ -289,8 +292,8 @@
     return NO_ERROR;
 }
 
-status_t BufferQueue::dequeueBuffer(int *outBuf, uint32_t w, uint32_t h,
-        uint32_t format, uint32_t usage) {
+status_t BufferQueue::dequeueBuffer(int *outBuf, sp<Fence>& outFence,
+        uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
     ATRACE_CALL();
     ST_LOGV("dequeueBuffer: w=%d h=%d fmt=%#x usage=%#x", w, h, format, usage);
 
@@ -301,7 +304,7 @@
 
     status_t returnFlags(OK);
     EGLDisplay dpy = EGL_NO_DISPLAY;
-    EGLSyncKHR fence = EGL_NO_SYNC_KHR;
+    EGLSyncKHR eglFence = EGL_NO_SYNC_KHR;
 
     { // Scope for the lock
         Mutex::Autolock lock(mMutex);
@@ -313,7 +316,6 @@
         usage |= mConsumerUsageBits;
 
         int found = -1;
-        int foundSync = -1;
         int dequeuedCount = 0;
         bool tryAgain = true;
         while (tryAgain) {
@@ -364,7 +366,6 @@
 
             // look for a free buffer to give to the client
             found = INVALID_BUFFER_SLOT;
-            foundSync = INVALID_BUFFER_SLOT;
             dequeuedCount = 0;
             for (int i = 0; i < mBufferCount; i++) {
                 const int state = mSlots[i].mBufferState;
@@ -388,7 +389,6 @@
                         bool isOlder = mSlots[i].mFrameNumber <
                                 mSlots[found].mFrameNumber;
                         if (found < 0 || isOlder) {
-                            foundSync = i;
                             found = i;
                         }
                     }
@@ -445,12 +445,6 @@
             h = mDefaultHeight;
         }
 
-        const bool updateFormat = (format != 0);
-        if (!updateFormat) {
-            // keep the current (or default) format
-            format = mPixelFormat;
-        }
-
         // buffer is now in DEQUEUED (but can also be current at the same time,
         // if we're in synchronous mode)
         mSlots[buf].mBufferState = BufferSlot::DEQUEUED;
@@ -471,26 +465,26 @@
                         "failed");
                 return error;
             }
-            if (updateFormat) {
-                mPixelFormat = format;
-            }
 
             mSlots[buf].mAcquireCalled = false;
             mSlots[buf].mGraphicBuffer = graphicBuffer;
             mSlots[buf].mRequestBufferCalled = false;
-            mSlots[buf].mFence = EGL_NO_SYNC_KHR;
+            mSlots[buf].mEglFence = EGL_NO_SYNC_KHR;
+            mSlots[buf].mFence.clear();
             mSlots[buf].mEglDisplay = EGL_NO_DISPLAY;
 
             returnFlags |= ISurfaceTexture::BUFFER_NEEDS_REALLOCATION;
         }
 
         dpy = mSlots[buf].mEglDisplay;
-        fence = mSlots[buf].mFence;
-        mSlots[buf].mFence = EGL_NO_SYNC_KHR;
+        eglFence = mSlots[buf].mEglFence;
+        outFence = mSlots[buf].mFence;
+        mSlots[buf].mEglFence = EGL_NO_SYNC_KHR;
+        mSlots[buf].mFence.clear();
     }  // end lock scope
 
-    if (fence != EGL_NO_SYNC_KHR) {
-        EGLint result = eglClientWaitSyncKHR(dpy, fence, 0, 1000000000);
+    if (eglFence != EGL_NO_SYNC_KHR) {
+        EGLint result = eglClientWaitSyncKHR(dpy, eglFence, 0, 1000000000);
         // If something goes wrong, log the error, but return the buffer without
         // synchronizing access to it.  It's too late at this point to abort the
         // dequeue operation.
@@ -499,7 +493,7 @@
         } else if (result == EGL_TIMEOUT_EXPIRED_KHR) {
             ST_LOGE("dequeueBuffer: timeout waiting for fence");
         }
-        eglDestroySyncKHR(dpy, fence);
+        eglDestroySyncKHR(dpy, eglFence);
     }
 
     ST_LOGV("dequeueBuffer: returning slot=%d buf=%p flags=%#x", *outBuf,
@@ -549,8 +543,9 @@
     uint32_t transform;
     int scalingMode;
     int64_t timestamp;
+    sp<Fence> fence;
 
-    input.deflate(&timestamp, &crop, &scalingMode, &transform);
+    input.deflate(&timestamp, &crop, &scalingMode, &transform, &fence);
 
     ST_LOGV("queueBuffer: slot=%d time=%#llx crop=[%d,%d,%d,%d] tr=%#x "
             "scale=%s",
@@ -617,6 +612,7 @@
         mSlots[buf].mTimestamp = timestamp;
         mSlots[buf].mCrop = crop;
         mSlots[buf].mTransform = transform;
+        mSlots[buf].mFence = fence;
 
         switch (scalingMode) {
             case NATIVE_WINDOW_SCALING_MODE_FREEZE:
@@ -650,7 +646,7 @@
     return OK;
 }
 
-void BufferQueue::cancelBuffer(int buf) {
+void BufferQueue::cancelBuffer(int buf, sp<Fence> fence) {
     ATRACE_CALL();
     ST_LOGV("cancelBuffer: slot=%d", buf);
     Mutex::Autolock lock(mMutex);
@@ -671,6 +667,7 @@
     }
     mSlots[buf].mBufferState = BufferSlot::FREE;
     mSlots[buf].mFrameNumber = 0;
+    mSlots[buf].mFence = fence;
     mDequeueCondition.broadcast();
 }
 
@@ -783,9 +780,9 @@
 
     snprintf(buffer, SIZE,
             "%s-BufferQueue mBufferCount=%d, mSynchronousMode=%d, default-size=[%dx%d], "
-            "mPixelFormat=%d, FIFO(%d)={%s}\n",
+            "default-format=%d, FIFO(%d)={%s}\n",
             prefix, mBufferCount, mSynchronousMode, mDefaultWidth,
-            mDefaultHeight, mPixelFormat, fifoSize, fifo.string());
+            mDefaultHeight, mDefaultBufferFormat, fifoSize, fifo.string());
     result.append(buffer);
 
 
@@ -827,20 +824,22 @@
     }
 }
 
-void BufferQueue::freeBufferLocked(int i) {
-    mSlots[i].mGraphicBuffer = 0;
-    if (mSlots[i].mBufferState == BufferSlot::ACQUIRED) {
-        mSlots[i].mNeedsCleanupOnRelease = true;
+void BufferQueue::freeBufferLocked(int slot) {
+    ST_LOGV("freeBufferLocked: slot=%d", slot);
+    mSlots[slot].mGraphicBuffer = 0;
+    if (mSlots[slot].mBufferState == BufferSlot::ACQUIRED) {
+        mSlots[slot].mNeedsCleanupOnRelease = true;
     }
-    mSlots[i].mBufferState = BufferSlot::FREE;
-    mSlots[i].mFrameNumber = 0;
-    mSlots[i].mAcquireCalled = false;
+    mSlots[slot].mBufferState = BufferSlot::FREE;
+    mSlots[slot].mFrameNumber = 0;
+    mSlots[slot].mAcquireCalled = false;
 
     // destroy fence as BufferQueue now takes ownership
-    if (mSlots[i].mFence != EGL_NO_SYNC_KHR) {
-        eglDestroySyncKHR(mSlots[i].mEglDisplay, mSlots[i].mFence);
-        mSlots[i].mFence = EGL_NO_SYNC_KHR;
+    if (mSlots[slot].mEglFence != EGL_NO_SYNC_KHR) {
+        eglDestroySyncKHR(mSlots[slot].mEglDisplay, mSlots[slot].mEglFence);
+        mSlots[slot].mEglFence = EGL_NO_SYNC_KHR;
     }
+    mSlots[slot].mFence.clear();
 }
 
 void BufferQueue::freeAllBuffersLocked() {
@@ -876,9 +875,13 @@
         buffer->mFrameNumber = mSlots[buf].mFrameNumber;
         buffer->mTimestamp = mSlots[buf].mTimestamp;
         buffer->mBuf = buf;
-        mSlots[buf].mAcquireCalled = true;
+        buffer->mFence = mSlots[buf].mFence;
 
+        mSlots[buf].mAcquireCalled = true;
+        mSlots[buf].mNeedsCleanupOnRelease = false;
         mSlots[buf].mBufferState = BufferSlot::ACQUIRED;
+        mSlots[buf].mFence.clear();
+
         mQueue.erase(front);
         mDequeueCondition.broadcast();
 
@@ -891,7 +894,7 @@
 }
 
 status_t BufferQueue::releaseBuffer(int buf, EGLDisplay display,
-        EGLSyncKHR fence) {
+        EGLSyncKHR eglFence, const sp<Fence>& fence) {
     ATRACE_CALL();
     ATRACE_BUFFER_INDEX(buf);
 
@@ -902,6 +905,7 @@
     }
 
     mSlots[buf].mEglDisplay = display;
+    mSlots[buf].mEglFence = eglFence;
     mSlots[buf].mFence = fence;
 
     // The buffer can now only be released if its in the acquired state
diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
new file mode 100644
index 0000000..17bbfd1
--- /dev/null
+++ b/libs/gui/ConsumerBase.cpp
@@ -0,0 +1,206 @@
+/*
+ * Copyright (C) 2010 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 "ConsumerBase"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+//#define LOG_NDEBUG 0
+
+#define GL_GLEXT_PROTOTYPES
+#define EGL_EGLEXT_PROTOTYPES
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <hardware/hardware.h>
+
+#include <gui/IGraphicBufferAlloc.h>
+#include <gui/ISurfaceComposer.h>
+#include <gui/SurfaceComposerClient.h>
+#include <gui/ConsumerBase.h>
+
+#include <private/gui/ComposerService.h>
+
+#include <utils/Log.h>
+#include <utils/String8.h>
+#include <utils/Trace.h>
+
+// Macros for including the ConsumerBase name in log messages
+#define CB_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CB_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CB_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CB_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CB_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
+
+namespace android {
+
+// Get an ID that's unique within this process.
+static int32_t createProcessUniqueId() {
+    static volatile int32_t globalCounter = 0;
+    return android_atomic_inc(&globalCounter);
+}
+
+ConsumerBase::ConsumerBase(const sp<BufferQueue>& bufferQueue) :
+        mAbandoned(false),
+        mBufferQueue(bufferQueue) {
+    // Choose a name using the PID and a process-unique ID.
+    mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
+
+    // Note that we can't create an sp<...>(this) in a ctor that will not keep a
+    // reference once the ctor ends, as that would cause the refcount of 'this'
+    // dropping to 0 at the end of the ctor.  Since all we need is a wp<...>
+    // that's what we create.
+    wp<BufferQueue::ConsumerListener> listener;
+    sp<BufferQueue::ConsumerListener> proxy;
+    listener = static_cast<BufferQueue::ConsumerListener*>(this);
+    proxy = new BufferQueue::ProxyConsumerListener(listener);
+
+    status_t err = mBufferQueue->consumerConnect(proxy);
+    if (err != NO_ERROR) {
+        CB_LOGE("SurfaceTexture: error connecting to BufferQueue: %s (%d)",
+                strerror(-err), err);
+    } else {
+        mBufferQueue->setConsumerName(mName);
+    }
+}
+
+ConsumerBase::~ConsumerBase() {
+	CB_LOGV("~ConsumerBase");
+    abandon();
+}
+
+void ConsumerBase::freeBufferLocked(int slotIndex) {
+    CB_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
+    mSlots[slotIndex].mGraphicBuffer = 0;
+    mSlots[slotIndex].mFence = 0;
+}
+
+// Used for refactoring, should not be in final interface
+sp<BufferQueue> ConsumerBase::getBufferQueue() const {
+    Mutex::Autolock lock(mMutex);
+    return mBufferQueue;
+}
+
+void ConsumerBase::onFrameAvailable() {
+    CB_LOGV("onFrameAvailable");
+
+    sp<FrameAvailableListener> listener;
+    { // scope for the lock
+        Mutex::Autolock lock(mMutex);
+        listener = mFrameAvailableListener;
+    }
+
+    if (listener != NULL) {
+        CB_LOGV("actually calling onFrameAvailable");
+        listener->onFrameAvailable();
+    }
+}
+
+void ConsumerBase::onBuffersReleased() {
+    Mutex::Autolock lock(mMutex);
+
+    CB_LOGV("onBuffersReleased");
+
+    if (mAbandoned) {
+        // Nothing to do if we're already abandoned.
+        return;
+    }
+
+    uint32_t mask = 0;
+    mBufferQueue->getReleasedBuffers(&mask);
+    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+        if (mask & (1 << i)) {
+            freeBufferLocked(i);
+        }
+    }
+}
+
+void ConsumerBase::abandon() {
+    CB_LOGV("abandon");
+    Mutex::Autolock lock(mMutex);
+
+    if (!mAbandoned) {
+        abandonLocked();
+        mAbandoned = true;
+    }
+}
+
+void ConsumerBase::abandonLocked() {
+	CB_LOGV("abandonLocked");
+    for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+        freeBufferLocked(i);
+    }
+    // disconnect from the BufferQueue
+    mBufferQueue->consumerDisconnect();
+    mBufferQueue.clear();
+}
+
+void ConsumerBase::setFrameAvailableListener(
+        const sp<FrameAvailableListener>& listener) {
+    CB_LOGV("setFrameAvailableListener");
+    Mutex::Autolock lock(mMutex);
+    mFrameAvailableListener = listener;
+}
+
+void ConsumerBase::dump(String8& result) const {
+    char buffer[1024];
+    dump(result, "", buffer, 1024);
+}
+
+void ConsumerBase::dump(String8& result, const char* prefix,
+        char* buffer, size_t size) const {
+    Mutex::Autolock _l(mMutex);
+    dumpLocked(result, prefix, buffer, size);
+}
+
+void ConsumerBase::dumpLocked(String8& result, const char* prefix,
+        char* buffer, size_t SIZE) const {
+    snprintf(buffer, SIZE, "%smAbandoned=%d\n", prefix, int(mAbandoned));
+    result.append(buffer);
+
+    if (!mAbandoned) {
+        mBufferQueue->dump(result, prefix, buffer, SIZE);
+    }
+}
+
+status_t ConsumerBase::acquireBufferLocked(BufferQueue::BufferItem *item) {
+    status_t err = mBufferQueue->acquireBuffer(item);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    if (item->mGraphicBuffer != NULL) {
+        mSlots[item->mBuf].mGraphicBuffer = item->mGraphicBuffer;
+    }
+
+    CB_LOGV("acquireBufferLocked: -> slot=%d", item->mBuf);
+
+    return OK;
+}
+
+status_t ConsumerBase::releaseBufferLocked(int slot, EGLDisplay display,
+       EGLSyncKHR eglFence, const sp<Fence>& fence) {
+    CB_LOGV("releaseBufferLocked: slot=%d", slot);
+    status_t err = mBufferQueue->releaseBuffer(slot, display, eglFence, fence);
+    if (err == BufferQueue::STALE_BUFFER_SLOT) {
+        freeBufferLocked(slot);
+    }
+
+    mSlots[slot].mFence.clear();
+
+    return err;
+}
+
+} // namespace android
\ No newline at end of file
diff --git a/libs/gui/CpuConsumer.cpp b/libs/gui/CpuConsumer.cpp
new file mode 100644
index 0000000..242ac45
--- /dev/null
+++ b/libs/gui/CpuConsumer.cpp
@@ -0,0 +1,158 @@
+/*
+ * Copyright (C) 2012 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_NDEBUG 0
+#define LOG_TAG "CpuConsumer"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+#include <utils/Log.h>
+
+#include <gui/CpuConsumer.h>
+
+#define CC_LOGV(x, ...) ALOGV("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CC_LOGD(x, ...) ALOGD("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CC_LOGI(x, ...) ALOGI("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CC_LOGW(x, ...) ALOGW("[%s] "x, mName.string(), ##__VA_ARGS__)
+#define CC_LOGE(x, ...) ALOGE("[%s] "x, mName.string(), ##__VA_ARGS__)
+
+namespace android {
+
+CpuConsumer::CpuConsumer(uint32_t maxLockedBuffers) :
+    ConsumerBase(new BufferQueue(true, maxLockedBuffers) ),
+    mMaxLockedBuffers(maxLockedBuffers),
+    mCurrentLockedBuffers(0)
+{
+
+    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
+        mBufferPointers[i] = NULL;
+    }
+
+    mBufferQueue->setSynchronousMode(true);
+    mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_SW_READ_OFTEN);
+}
+
+CpuConsumer::~CpuConsumer() {
+}
+
+void CpuConsumer::setName(const String8& name) {
+    Mutex::Autolock _l(mMutex);
+    mName = name;
+    mBufferQueue->setConsumerName(name);
+}
+
+status_t CpuConsumer::lockNextBuffer(LockedBuffer *nativeBuffer) {
+    status_t err;
+
+    if (!nativeBuffer) return BAD_VALUE;
+    if (mCurrentLockedBuffers == mMaxLockedBuffers) {
+        return INVALID_OPERATION;
+    }
+
+    BufferQueue::BufferItem b;
+
+    Mutex::Autolock _l(mMutex);
+
+    err = acquireBufferLocked(&b);
+    if (err != OK) {
+        if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
+            return BAD_VALUE;
+        } else {
+            CC_LOGE("Error acquiring buffer: %s (%d)", strerror(err), err);
+            return err;
+        }
+    }
+
+    int buf = b.mBuf;
+
+    if (b.mFence.get()) {
+        err = b.mFence->wait(Fence::TIMEOUT_NEVER);
+        if (err != OK) {
+            CC_LOGE("Failed to wait for fence of acquired buffer: %s (%d)",
+                    strerror(-err), err);
+            return err;
+        }
+    }
+
+    err = mSlots[buf].mGraphicBuffer->lock(
+        GraphicBuffer::USAGE_SW_READ_OFTEN,
+        b.mCrop,
+        &mBufferPointers[buf]);
+
+    if (mBufferPointers[buf] != NULL && err != OK) {
+        CC_LOGE("Unable to lock buffer for CPU reading: %s (%d)", strerror(-err),
+                err);
+        return err;
+    }
+
+    nativeBuffer->data   = reinterpret_cast<uint8_t*>(mBufferPointers[buf]);
+    nativeBuffer->width  = mSlots[buf].mGraphicBuffer->getWidth();
+    nativeBuffer->height = mSlots[buf].mGraphicBuffer->getHeight();
+    nativeBuffer->format = mSlots[buf].mGraphicBuffer->getPixelFormat();
+    nativeBuffer->stride = mSlots[buf].mGraphicBuffer->getStride();
+
+    nativeBuffer->crop        = b.mCrop;
+    nativeBuffer->transform   = b.mTransform;
+    nativeBuffer->scalingMode = b.mScalingMode;
+    nativeBuffer->timestamp   = b.mTimestamp;
+    nativeBuffer->frameNumber = b.mFrameNumber;
+
+    mCurrentLockedBuffers++;
+
+    return OK;
+}
+
+status_t CpuConsumer::unlockBuffer(const LockedBuffer &nativeBuffer) {
+    Mutex::Autolock _l(mMutex);
+    int slotIndex = 0;
+    status_t err;
+
+    void *bufPtr = reinterpret_cast<void *>(nativeBuffer.data);
+    for (; slotIndex < BufferQueue::NUM_BUFFER_SLOTS; slotIndex++) {
+        if (bufPtr == mBufferPointers[slotIndex]) break;
+    }
+    if (slotIndex == BufferQueue::NUM_BUFFER_SLOTS) {
+        CC_LOGE("%s: Can't find buffer to free", __FUNCTION__);
+        return BAD_VALUE;
+    }
+
+    mBufferPointers[slotIndex] = NULL;
+    err = mSlots[slotIndex].mGraphicBuffer->unlock();
+    if (err != OK) {
+        CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__, slotIndex);
+        return err;
+    }
+    releaseBufferLocked(slotIndex, EGL_NO_DISPLAY, EGL_NO_SYNC_KHR, Fence::NO_FENCE);
+
+    mCurrentLockedBuffers--;
+
+    return OK;
+}
+
+void CpuConsumer::freeBufferLocked(int slotIndex) {
+    if (mBufferPointers[slotIndex] != NULL) {
+        status_t err;
+        CC_LOGW("Buffer %d freed while locked by consumer", slotIndex);
+        mBufferPointers[slotIndex] = NULL;
+        err = mSlots[slotIndex].mGraphicBuffer->unlock();
+        if (err != OK) {
+            CC_LOGE("%s: Unable to unlock graphic buffer %d", __FUNCTION__,
+                    slotIndex);
+        }
+        mCurrentLockedBuffers--;
+    }
+    ConsumerBase::freeBufferLocked(slotIndex);
+}
+
+} // namespace android
diff --git a/libs/gui/ISensorServer.cpp b/libs/gui/ISensorServer.cpp
index 7111092..0b76f37 100644
--- a/libs/gui/ISensorServer.cpp
+++ b/libs/gui/ISensorServer.cpp
@@ -55,7 +55,7 @@
         int32_t n = reply.readInt32();
         v.setCapacity(n);
         while (n--) {
-            reply.read(static_cast<Flattenable&>(s));
+            reply.read(s);
             v.add(s);
         }
         return v;
@@ -84,7 +84,7 @@
             size_t n = v.size();
             reply->writeInt32(n);
             for (size_t i=0 ; i<n ; i++) {
-                reply->write(static_cast<const Flattenable&>(v[i]));
+                reply->write(v[i]);
             }
             return NO_ERROR;
         } break;
diff --git a/libs/gui/ISurfaceComposer.cpp b/libs/gui/ISurfaceComposer.cpp
index 1f1794c..6bcc41d 100644
--- a/libs/gui/ISurfaceComposer.cpp
+++ b/libs/gui/ISurfaceComposer.cpp
@@ -68,26 +68,29 @@
         return interface_cast<IGraphicBufferAlloc>(reply.readStrongBinder());
     }
 
-    virtual sp<IMemoryHeap> getCblk() const
+    virtual void setTransactionState(
+            const Vector<ComposerState>& state,
+            const Vector<DisplayState>& displays,
+            uint32_t flags)
     {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        remote()->transact(BnSurfaceComposer::GET_CBLK, data, &reply);
-        return interface_cast<IMemoryHeap>(reply.readStrongBinder());
-    }
-
-    virtual void setTransactionState(const Vector<ComposerState>& state,
-            int orientation, uint32_t flags)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        Vector<ComposerState>::const_iterator b(state.begin());
-        Vector<ComposerState>::const_iterator e(state.end());
-        data.writeInt32(state.size());
-        for ( ; b != e ; ++b ) {
-            b->write(data);
+        {
+            Vector<ComposerState>::const_iterator b(state.begin());
+            Vector<ComposerState>::const_iterator e(state.end());
+            data.writeInt32(state.size());
+            for ( ; b != e ; ++b ) {
+                b->write(data);
+            }
         }
-        data.writeInt32(orientation);
+        {
+            Vector<DisplayState>::const_iterator b(displays.begin());
+            Vector<DisplayState>::const_iterator e(displays.end());
+            data.writeInt32(displays.size());
+            for ( ; b != e ; ++b ) {
+                b->write(data);
+            }
+        }
         data.writeInt32(flags);
         remote()->transact(BnSurfaceComposer::SET_TRANSACTION_STATE, data, &reply);
     }
@@ -99,15 +102,15 @@
         remote()->transact(BnSurfaceComposer::BOOT_FINISHED, data, &reply);
     }
 
-    virtual status_t captureScreen(DisplayID dpy,
-            sp<IMemoryHeap>* heap,
+    virtual status_t captureScreen(
+            const sp<IBinder>& display, sp<IMemoryHeap>* heap,
             uint32_t* width, uint32_t* height, PixelFormat* format,
             uint32_t reqWidth, uint32_t reqHeight,
             uint32_t minLayerZ, uint32_t maxLayerZ)
     {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        data.writeInt32(dpy);
+        data.writeStrongBinder(display);
         data.writeInt32(reqWidth);
         data.writeInt32(reqHeight);
         data.writeInt32(minLayerZ);
@@ -120,24 +123,6 @@
         return reply.readInt32();
     }
 
-    virtual status_t turnElectronBeamOff(int32_t mode)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        data.writeInt32(mode);
-        remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_OFF, data, &reply);
-        return reply.readInt32();
-    }
-
-    virtual status_t turnElectronBeamOn(int32_t mode)
-    {
-        Parcel data, reply;
-        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
-        data.writeInt32(mode);
-        remote()->transact(BnSurfaceComposer::TURN_ELECTRON_BEAM_ON, data, &reply);
-        return reply.readInt32();
-    }
-
     virtual bool authenticateSurfaceTexture(
             const sp<ISurfaceTexture>& surfaceTexture) const
     {
@@ -193,6 +178,55 @@
         result = interface_cast<IDisplayEventConnection>(reply.readStrongBinder());
         return result;
     }
+
+    virtual sp<IBinder> createDisplay()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        remote()->transact(BnSurfaceComposer::CREATE_DISPLAY, data, &reply);
+        return reply.readStrongBinder();
+    }
+
+    virtual sp<IBinder> getBuiltInDisplay(int32_t id)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        data.writeInt32(id);
+        remote()->transact(BnSurfaceComposer::GET_BUILT_IN_DISPLAY, data, &reply);
+        return reply.readStrongBinder();
+    }
+
+    virtual void blank()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        remote()->transact(BnSurfaceComposer::BLANK, data, &reply);
+    }
+
+    virtual void unblank()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        remote()->transact(BnSurfaceComposer::UNBLANK, data, &reply);
+    }
+
+    virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        data.writeStrongBinder(display);
+        remote()->transact(BnSurfaceComposer::GET_DISPLAY_INFO, data, &reply);
+        memcpy(info, reply.readInplace(sizeof(DisplayInfo)), sizeof(DisplayInfo));
+        return reply.readInt32();
+    }
+
+
+    virtual void connectDisplay(const sp<ISurfaceTexture>& display) {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceComposer::getInterfaceDescriptor());
+        data.writeStrongBinder(display->asBinder());
+        remote()->transact(BnSurfaceComposer::CONNECT_DISPLAY, data, &reply);
+    }
 };
 
 IMPLEMENT_META_INTERFACE(SurfaceComposer, "android.ui.ISurfaceComposer");
@@ -223,22 +257,24 @@
                 s.read(data);
                 state.add(s);
             }
-            int orientation = data.readInt32();
+            count = data.readInt32();
+            DisplayState d;
+            Vector<DisplayState> displays;
+            displays.setCapacity(count);
+            for (size_t i=0 ; i<count ; i++) {
+                d.read(data);
+                displays.add(d);
+            }
             uint32_t flags = data.readInt32();
-            setTransactionState(state, orientation, flags);
+            setTransactionState(state, displays, flags);
         } break;
         case BOOT_FINISHED: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             bootFinished();
         } break;
-        case GET_CBLK: {
-            CHECK_INTERFACE(ISurfaceComposer, data, reply);
-            sp<IBinder> b = getCblk()->asBinder();
-            reply->writeStrongBinder(b);
-        } break;
         case CAPTURE_SCREEN: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
-            DisplayID dpy = data.readInt32();
+            sp<IBinder> display = data.readStrongBinder();
             uint32_t reqWidth = data.readInt32();
             uint32_t reqHeight = data.readInt32();
             uint32_t minLayerZ = data.readInt32();
@@ -246,7 +282,7 @@
             sp<IMemoryHeap> heap;
             uint32_t w, h;
             PixelFormat f;
-            status_t res = captureScreen(dpy, &heap, &w, &h, &f,
+            status_t res = captureScreen(display, &heap, &w, &h, &f,
                     reqWidth, reqHeight, minLayerZ, maxLayerZ);
             reply->writeStrongBinder(heap->asBinder());
             reply->writeInt32(w);
@@ -254,18 +290,6 @@
             reply->writeInt32(f);
             reply->writeInt32(res);
         } break;
-        case TURN_ELECTRON_BEAM_OFF: {
-            CHECK_INTERFACE(ISurfaceComposer, data, reply);
-            int32_t mode = data.readInt32();
-            status_t res = turnElectronBeamOff(mode);
-            reply->writeInt32(res);
-        } break;
-        case TURN_ELECTRON_BEAM_ON: {
-            CHECK_INTERFACE(ISurfaceComposer, data, reply);
-            int32_t mode = data.readInt32();
-            status_t res = turnElectronBeamOn(mode);
-            reply->writeInt32(res);
-        } break;
         case AUTHENTICATE_SURFACE: {
             CHECK_INTERFACE(ISurfaceComposer, data, reply);
             sp<ISurfaceTexture> surfaceTexture =
@@ -279,6 +303,41 @@
             reply->writeStrongBinder(connection->asBinder());
             return NO_ERROR;
         } break;
+        case CREATE_DISPLAY: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<IBinder> display(createDisplay());
+            reply->writeStrongBinder(display);
+            return NO_ERROR;
+        } break;
+        case GET_BUILT_IN_DISPLAY: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            int32_t id = data.readInt32();
+            sp<IBinder> display(getBuiltInDisplay(id));
+            reply->writeStrongBinder(display);
+            return NO_ERROR;
+        } break;
+        case BLANK: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            blank();
+        } break;
+        case UNBLANK: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            unblank();
+        } break;
+        case GET_DISPLAY_INFO: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            DisplayInfo info;
+            sp<IBinder> display = data.readStrongBinder();
+            status_t result = getDisplayInfo(display, &info);
+            memcpy(reply->writeInplace(sizeof(DisplayInfo)), &info, sizeof(DisplayInfo));
+            reply->writeInt32(result);
+        } break;
+        case CONNECT_DISPLAY: {
+            CHECK_INTERFACE(ISurfaceComposer, data, reply);
+            sp<ISurfaceTexture> surfaceTexture =
+                    interface_cast<ISurfaceTexture>(data.readStrongBinder());
+            connectDisplay(surfaceTexture);
+        } break;
         default:
             return BBinder::onTransact(code, data, reply, flags);
     }
diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index ca9ed5b..8f7bc05 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -52,7 +52,6 @@
 
     virtual sp<ISurface> createSurface( surface_data_t* params,
                                         const String8& name,
-                                        DisplayID display,
                                         uint32_t w,
                                         uint32_t h,
                                         PixelFormat format,
@@ -61,7 +60,6 @@
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceComposerClient::getInterfaceDescriptor());
         data.writeString8(name);
-        data.writeInt32(display);
         data.writeInt32(w);
         data.writeInt32(h);
         data.writeInt32(format);
@@ -93,12 +91,11 @@
             CHECK_INTERFACE(ISurfaceComposerClient, data, reply);
             surface_data_t params;
             String8 name = data.readString8();
-            DisplayID display = data.readInt32();
             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, display, w, h,
+            sp<ISurface> s = createSurface(&params, name, w, h,
                     format, flags);
             params.writeToParcel(reply);
             reply->writeStrongBinder(s->asBinder());
diff --git a/libs/gui/ISurfaceTexture.cpp b/libs/gui/ISurfaceTexture.cpp
index 3eb5e7a..a0b1e74 100644
--- a/libs/gui/ISurfaceTexture.cpp
+++ b/libs/gui/ISurfaceTexture.cpp
@@ -81,8 +81,8 @@
         return result;
     }
 
-    virtual status_t dequeueBuffer(int *buf, uint32_t w, uint32_t h,
-            uint32_t format, uint32_t usage) {
+    virtual status_t dequeueBuffer(int *buf, sp<Fence>& fence,
+            uint32_t w, uint32_t h, uint32_t format, uint32_t usage) {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
         data.writeInt32(w);
@@ -94,6 +94,12 @@
             return result;
         }
         *buf = reply.readInt32();
+        fence.clear();
+        bool hasFence = reply.readInt32();
+        if (hasFence) {
+            fence = new Fence();
+            reply.read(*fence.get());
+        }
         result = reply.readInt32();
         return result;
     }
@@ -103,7 +109,7 @@
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
         data.writeInt32(buf);
-        memcpy(data.writeInplace(sizeof(input)), &input, sizeof(input));
+        data.write(input);
         status_t result = remote()->transact(QUEUE_BUFFER, data, &reply);
         if (result != NO_ERROR) {
             return result;
@@ -113,10 +119,15 @@
         return result;
     }
 
-    virtual void cancelBuffer(int buf) {
+    virtual void cancelBuffer(int buf, sp<Fence> fence) {
         Parcel data, reply;
+        bool hasFence = fence.get() && fence->isValid();
         data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
         data.writeInt32(buf);
+        data.writeInt32(hasFence);
+        if (hasFence) {
+            data.write(*fence.get());
+        }
         remote()->transact(CANCEL_BUFFER, data, &reply);
     }
 
@@ -205,28 +216,38 @@
             uint32_t format = data.readInt32();
             uint32_t usage  = data.readInt32();
             int buf;
-            int result = dequeueBuffer(&buf, w, h, format, usage);
+            sp<Fence> fence;
+            int result = dequeueBuffer(&buf, fence, w, h, format, usage);
+            bool hasFence = fence.get() && fence->isValid();
             reply->writeInt32(buf);
+            reply->writeInt32(hasFence);
+            if (hasFence) {
+                reply->write(*fence.get());
+            }
             reply->writeInt32(result);
             return NO_ERROR;
         } break;
         case QUEUE_BUFFER: {
             CHECK_INTERFACE(ISurfaceTexture, data, reply);
             int buf = data.readInt32();
-            QueueBufferInput const* const input =
-                    reinterpret_cast<QueueBufferInput const *>(
-                            data.readInplace(sizeof(QueueBufferInput)));
+            QueueBufferInput input(data);
             QueueBufferOutput* const output =
                     reinterpret_cast<QueueBufferOutput *>(
                             reply->writeInplace(sizeof(QueueBufferOutput)));
-            status_t result = queueBuffer(buf, *input, output);
+            status_t result = queueBuffer(buf, input, output);
             reply->writeInt32(result);
             return NO_ERROR;
         } break;
         case CANCEL_BUFFER: {
             CHECK_INTERFACE(ISurfaceTexture, data, reply);
             int buf = data.readInt32();
-            cancelBuffer(buf);
+            sp<Fence> fence;
+            bool hasFence = data.readInt32();
+            if (hasFence) {
+                fence = new Fence();
+                data.read(*fence.get());
+            }
+            cancelBuffer(buf, fence);
             return NO_ERROR;
         } break;
         case QUERY: {
@@ -268,4 +289,62 @@
 
 // ----------------------------------------------------------------------------
 
+static bool isValid(const sp<Fence>& fence) {
+    return fence.get() && fence->isValid();
+}
+
+ISurfaceTexture::QueueBufferInput::QueueBufferInput(const Parcel& parcel) {
+    parcel.read(*this);
+}
+
+size_t ISurfaceTexture::QueueBufferInput::getFlattenedSize() const
+{
+    return sizeof(timestamp)
+         + sizeof(crop)
+         + sizeof(scalingMode)
+         + sizeof(transform)
+         + sizeof(bool)
+         + (isValid(fence) ? fence->getFlattenedSize() : 0);
+}
+
+size_t ISurfaceTexture::QueueBufferInput::getFdCount() const
+{
+    return isValid(fence) ? fence->getFdCount() : 0;
+}
+
+status_t ISurfaceTexture::QueueBufferInput::flatten(void* buffer, size_t size,
+        int fds[], size_t count) const
+{
+    status_t err = NO_ERROR;
+    bool haveFence = isValid(fence);
+    char* p = (char*)buffer;
+    memcpy(p, &timestamp,   sizeof(timestamp));   p += sizeof(timestamp);
+    memcpy(p, &crop,        sizeof(crop));        p += sizeof(crop);
+    memcpy(p, &scalingMode, sizeof(scalingMode)); p += sizeof(scalingMode);
+    memcpy(p, &transform,   sizeof(transform));   p += sizeof(transform);
+    memcpy(p, &haveFence,   sizeof(haveFence));   p += sizeof(haveFence);
+    if (haveFence) {
+        err = fence->flatten(p, size - (p - (char*)buffer), fds, count);
+    }
+    return err;
+}
+
+status_t ISurfaceTexture::QueueBufferInput::unflatten(void const* buffer,
+        size_t size, int fds[], size_t count)
+{
+    status_t err = NO_ERROR;
+    bool haveFence;
+    const char* p = (const char*)buffer;
+    memcpy(&timestamp,   p, sizeof(timestamp));   p += sizeof(timestamp);
+    memcpy(&crop,        p, sizeof(crop));        p += sizeof(crop);
+    memcpy(&scalingMode, p, sizeof(scalingMode)); p += sizeof(scalingMode);
+    memcpy(&transform,   p, sizeof(transform));   p += sizeof(transform);
+    memcpy(&haveFence,   p, sizeof(haveFence));   p += sizeof(haveFence);
+    if (haveFence) {
+        fence = new Fence();
+        err = fence->unflatten(p, size - (p - (const char*)buffer), fds, count);
+    }
+    return err;
+}
+
 }; // namespace android
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 224c305..e2604f8 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -17,6 +17,7 @@
 #include <utils/Errors.h>
 #include <binder/Parcel.h>
 #include <gui/ISurfaceComposerClient.h>
+#include <gui/ISurfaceTexture.h>
 #include <private/gui/LayerState.h>
 
 namespace android {
@@ -25,14 +26,7 @@
 {
     status_t err;
 
-    size_t len = transparentRegion.write(NULL, 0);
-    err = output.writeInt32(len);
-    if (err < NO_ERROR) return err;
-
-    void* buf = output.writeInplace(len);
-    if (buf == NULL) return NO_MEMORY;
-
-    err = transparentRegion.write(buf, len);
+    err = output.write(transparentRegion);
     if (err < NO_ERROR) return err;
 
     // NOTE: regions are at the end of the structure
@@ -45,11 +39,8 @@
 status_t layer_state_t::read(const Parcel& input)
 {
     status_t err;
-    size_t len = input.readInt32();
-    void const* buf = input.readInplace(len);
-    if (buf == NULL) return NO_MEMORY;
 
-    err = transparentRegion.read(buf);
+    err = input.read(transparentRegion);
     if (err < NO_ERROR) return err;
 
     // NOTE: regions are at the end of the structure
@@ -69,4 +60,28 @@
     return state.read(input);
 }
 
+
+status_t DisplayState::write(Parcel& output) const {
+    output.writeStrongBinder(token);
+    output.writeStrongBinder(surface->asBinder());
+    output.writeInt32(what);
+    output.writeInt32(layerStack);
+    output.writeInt32(orientation);
+    output.write(viewport);
+    output.write(frame);
+    return NO_ERROR;
+}
+
+status_t DisplayState::read(const Parcel& input) {
+    token = input.readStrongBinder();
+    surface = interface_cast<ISurfaceTexture>(input.readStrongBinder());
+    what = input.readInt32();
+    layerStack = input.readInt32();
+    orientation = input.readInt32();
+    input.read(viewport);
+    input.read(frame);
+    return NO_ERROR;
+}
+
+
 }; // namespace android
diff --git a/libs/gui/Sensor.cpp b/libs/gui/Sensor.cpp
index 5cc76b4..c52a88f 100644
--- a/libs/gui/Sensor.cpp
+++ b/libs/gui/Sensor.cpp
@@ -98,7 +98,7 @@
     return mVersion;
 }
 
-size_t Sensor::getFlattenedSize() const
+size_t Sensor::getSize() const
 {
     return  sizeof(int32_t) + ((mName.length() + 3) & ~3) +
             sizeof(int32_t) + ((mVendor.length() + 3) & ~3) +
@@ -107,11 +107,6 @@
             sizeof(int32_t);
 }
 
-size_t Sensor::getFdCount() const
-{
-    return 0;
-}
-
 static inline
 size_t write(void* buffer, size_t offset, const String8& value) {
     memcpy(static_cast<char*>(buffer) + offset, value.string(), value.length());
@@ -130,12 +125,8 @@
     return sizeof(int32_t);
 }
 
-status_t Sensor::flatten(void* buffer, size_t size,
-        int fds[], size_t count) const
+status_t Sensor::flatten(void* buffer) const
 {
-    if (size < Sensor::getFlattenedSize())
-        return -ENOMEM;
-
     size_t offset = 0;
     offset += write(buffer, offset, int32_t(mName.length()));
     offset += write(buffer, offset, mName);
@@ -149,7 +140,6 @@
     offset += write(buffer, offset, mResolution);
     offset += write(buffer, offset, mPower);
     offset += write(buffer, offset, mMinDelay);
-
     return NO_ERROR;
 }
 
@@ -171,8 +161,7 @@
     return sizeof(int32_t);
 }
 
-status_t Sensor::unflatten(void const* buffer, size_t size,
-        int fds[], size_t count)
+status_t Sensor::unflatten(void const* buffer, size_t size)
 {
     int32_t len;
     size_t offset = 0;
@@ -188,7 +177,6 @@
     offset += read(buffer, offset, &mResolution);
     offset += read(buffer, offset, &mPower);
     offset += read(buffer, offset, &mMinDelay);
-
     return NO_ERROR;
 }
 
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index d7590f0..1745061 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -92,6 +92,12 @@
     return lhs->mSurface->asBinder() == rhs->mSurface->asBinder();
 }
 
+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);
+}
 status_t SurfaceControl::setLayer(int32_t layer) {
     status_t err = validate();
     if (err < 0) return err;
@@ -116,23 +122,11 @@
     const sp<SurfaceComposerClient>& client(mClient);
     return client->hide(mToken);
 }
-status_t SurfaceControl::show(int32_t layer) {
+status_t SurfaceControl::show() {
     status_t err = validate();
     if (err < 0) return err;
     const sp<SurfaceComposerClient>& client(mClient);
-    return client->show(mToken, layer);
-}
-status_t SurfaceControl::freeze() {
-    status_t err = validate();
-    if (err < 0) return err;
-    const sp<SurfaceComposerClient>& client(mClient);
-    return client->freeze(mToken);
-}
-status_t SurfaceControl::unfreeze() {
-    status_t err = validate();
-    if (err < 0) return err;
-    const sp<SurfaceComposerClient>& client(mClient);
-    return client->unfreeze(mToken);
+    return client->show(mToken);
 }
 status_t SurfaceControl::setFlags(uint32_t flags, uint32_t mask) {
     status_t err = validate();
@@ -158,12 +152,6 @@
     const sp<SurfaceComposerClient>& client(mClient);
     return client->setMatrix(mToken, dsdx, dtdx, dsdy, dtdy);
 }
-status_t SurfaceControl::setFreezeTint(uint32_t tint) {
-    status_t err = validate();
-    if (err < 0) return err;
-    const sp<SurfaceComposerClient>& client(mClient);
-    return client->setFreezeTint(mToken, tint);
-}
 status_t SurfaceControl::setCrop(const Rect& crop) {
     status_t err = validate();
     if (err < 0) return err;
@@ -317,8 +305,11 @@
             setUsage(GraphicBuffer::USAGE_HW_RENDER);
         }
 
+        // TODO: the display metrics should come from the display manager
         DisplayInfo dinfo;
-        SurfaceComposerClient::getDisplayInfo(0, &dinfo);
+        sp<IBinder> display = SurfaceComposerClient::getBuiltInDisplay(
+                ISurfaceComposer::eDisplayIdMain);
+        SurfaceComposerClient::getDisplayInfo(display, &dinfo);
         const_cast<float&>(ANativeWindow::xdpi) = dinfo.xdpi;
         const_cast<float&>(ANativeWindow::ydpi) = dinfo.ydpi;
         const_cast<uint32_t&>(ANativeWindow::flags) = 0;
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 8fa2167..e4922a4 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -38,7 +38,6 @@
 
 #include <private/gui/ComposerService.h>
 #include <private/gui/LayerState.h>
-#include <private/gui/SharedBufferStack.h>
 
 namespace android {
 // ---------------------------------------------------------------------------
@@ -51,33 +50,16 @@
     while (getService(name, &mComposerService) != NO_ERROR) {
         usleep(250000);
     }
-    mServerCblkMemory = mComposerService->getCblk();
-    mServerCblk = static_cast<surface_flinger_cblk_t volatile *>(
-            mServerCblkMemory->getBase());
 }
 
 sp<ISurfaceComposer> ComposerService::getComposerService() {
     return ComposerService::getInstance().mComposerService;
 }
 
-surface_flinger_cblk_t const volatile * ComposerService::getControlBlock() {
-    return ComposerService::getInstance().mServerCblk;
-}
-
-static inline sp<ISurfaceComposer> getComposerService() {
-    return ComposerService::getComposerService();
-}
-
-static inline surface_flinger_cblk_t const volatile * get_cblk() {
-    return ComposerService::getControlBlock();
-}
-
 // ---------------------------------------------------------------------------
 
-// NOTE: this is NOT a member function (it's a friend defined with its
-// declaration).
 static inline
-int compare_type( const ComposerState& lhs, const ComposerState& rhs) {
+int compare_type(const ComposerState& lhs, const ComposerState& rhs) {
     if (lhs.client < rhs.client)  return -1;
     if (lhs.client > rhs.client)  return 1;
     if (lhs.state.surface < rhs.state.surface)  return -1;
@@ -85,17 +67,21 @@
     return 0;
 }
 
+static inline
+int compare_type(const DisplayState& lhs, const DisplayState& rhs) {
+    return compare_type(lhs.token, rhs.token);
+}
+
 class Composer : public Singleton<Composer>
 {
     friend class Singleton<Composer>;
 
     mutable Mutex               mLock;
-    SortedVector<ComposerState> mStates;
-    int                         mOrientation;
+    SortedVector<ComposerState> mComposerStates;
+    SortedVector<DisplayState > mDisplayStates;
     uint32_t                    mForceSynchronous;
 
     Composer() : Singleton<Composer>(),
-        mOrientation(ISurfaceComposer::eOrientationUnchanged),
         mForceSynchronous(0)
     { }
 
@@ -104,7 +90,11 @@
     layer_state_t* getLayerStateLocked(
             const sp<SurfaceComposerClient>& client, SurfaceID id);
 
+    DisplayState& getDisplayStateLocked(const sp<IBinder>& token);
+
 public:
+    sp<IBinder> createDisplay();
+    sp<IBinder> getBuiltInDisplay(int32_t id);
 
     status_t setPosition(const sp<SurfaceComposerClient>& client, SurfaceID id,
             float x, float y);
@@ -121,12 +111,17 @@
             float alpha);
     status_t setMatrix(const sp<SurfaceComposerClient>& client, SurfaceID id,
             float dsdx, float dtdx, float dsdy, float dtdy);
-    status_t setFreezeTint(
-            const sp<SurfaceComposerClient>& client, SurfaceID id,
-            uint32_t tint);
     status_t setOrientation(int orientation);
     status_t setCrop(const sp<SurfaceComposerClient>& client, SurfaceID id,
             const Rect& crop);
+    status_t setLayerStack(const sp<SurfaceComposerClient>& client,
+            SurfaceID id, uint32_t layerStack);
+
+    void setDisplaySurface(const sp<IBinder>& token, const sp<ISurfaceTexture>& surface);
+    void setDisplayLayerStack(const sp<IBinder>& token, uint32_t layerStack);
+    void setDisplayOrientation(const sp<IBinder>& token, uint32_t orientation);
+    void setDisplayViewport(const sp<IBinder>& token, const Rect& viewport);
+    void setDisplayFrame(const sp<IBinder>& token, const Rect& frame);
 
     static void closeGlobalTransaction(bool synchronous) {
         Composer::getInstance().closeGlobalTransactionImpl(synchronous);
@@ -137,20 +132,28 @@
 
 // ---------------------------------------------------------------------------
 
+sp<IBinder> Composer::createDisplay() {
+    return ComposerService::getComposerService()->createDisplay();
+}
+
+sp<IBinder> Composer::getBuiltInDisplay(int32_t id) {
+    return ComposerService::getComposerService()->getBuiltInDisplay(id);
+}
+
 void Composer::closeGlobalTransactionImpl(bool synchronous) {
-    sp<ISurfaceComposer> sm(getComposerService());
+    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
 
     Vector<ComposerState> transaction;
-    int orientation;
+    Vector<DisplayState> displayTransaction;
     uint32_t flags = 0;
 
     { // scope for the lock
         Mutex::Autolock _l(mLock);
-        transaction = mStates;
-        mStates.clear();
+        transaction = mComposerStates;
+        mComposerStates.clear();
 
-        orientation = mOrientation;
-        mOrientation = ISurfaceComposer::eOrientationUnchanged;
+        displayTransaction = mDisplayStates;
+        mDisplayStates.clear();
 
         if (synchronous || mForceSynchronous) {
             flags |= ISurfaceComposer::eSynchronous;
@@ -158,7 +161,7 @@
         mForceSynchronous = false;
     }
 
-   sm->setTransactionState(transaction, orientation, flags);
+   sm->setTransactionState(transaction, displayTransaction, flags);
 }
 
 layer_state_t* Composer::getLayerStateLocked(
@@ -168,13 +171,13 @@
     s.client = client->mClient;
     s.state.surface = id;
 
-    ssize_t index = mStates.indexOf(s);
+    ssize_t index = mComposerStates.indexOf(s);
     if (index < 0) {
         // we don't have it, add an initialized layer_state to our list
-        index = mStates.add(s);
+        index = mComposerStates.add(s);
     }
 
-    ComposerState* const out = mStates.editArray();
+    ComposerState* const out = mComposerStates.editArray();
     return &(out[index].state);
 }
 
@@ -184,7 +187,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::ePositionChanged;
+    s->what |= layer_state_t::ePositionChanged;
     s->x = x;
     s->y = y;
     return NO_ERROR;
@@ -196,7 +199,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eSizeChanged;
+    s->what |= layer_state_t::eSizeChanged;
     s->w = w;
     s->h = h;
 
@@ -212,7 +215,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eLayerChanged;
+    s->what |= layer_state_t::eLayerChanged;
     s->z = z;
     return NO_ERROR;
 }
@@ -224,7 +227,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eVisibilityChanged;
+    s->what |= layer_state_t::eVisibilityChanged;
     s->flags &= ~mask;
     s->flags |= (flags & mask);
     s->mask |= mask;
@@ -238,7 +241,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eTransparentRegionChanged;
+    s->what |= layer_state_t::eTransparentRegionChanged;
     s->transparentRegion = transparentRegion;
     return NO_ERROR;
 }
@@ -249,11 +252,22 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eAlphaChanged;
+    s->what |= layer_state_t::eAlphaChanged;
     s->alpha = alpha;
     return NO_ERROR;
 }
 
+status_t Composer::setLayerStack(const sp<SurfaceComposerClient>& client,
+        SurfaceID id, uint32_t layerStack) {
+    Mutex::Autolock _l(mLock);
+    layer_state_t* s = getLayerStateLocked(client, id);
+    if (!s)
+        return BAD_INDEX;
+    s->what |= layer_state_t::eLayerStackChanged;
+    s->layerStack = layerStack;
+    return NO_ERROR;
+}
+
 status_t Composer::setMatrix(const sp<SurfaceComposerClient>& client,
         SurfaceID id, float dsdx, float dtdx,
         float dsdy, float dtdy) {
@@ -261,7 +275,7 @@
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eMatrixChanged;
+    s->what |= layer_state_t::eMatrixChanged;
     layer_state_t::matrix22_t matrix;
     matrix.dsdx = dsdx;
     matrix.dtdx = dtdx;
@@ -271,47 +285,89 @@
     return NO_ERROR;
 }
 
-status_t Composer::setFreezeTint(const sp<SurfaceComposerClient>& client,
-        SurfaceID id, uint32_t tint) {
-    Mutex::Autolock _l(mLock);
-    layer_state_t* s = getLayerStateLocked(client, id);
-    if (!s)
-        return BAD_INDEX;
-    s->what |= ISurfaceComposer::eFreezeTintChanged;
-    s->tint = tint;
-    return NO_ERROR;
-}
-
-status_t Composer::setOrientation(int orientation) {
-    Mutex::Autolock _l(mLock);
-    mOrientation = orientation;
-
-    // Changing the orientation makes the transaction synchronous.
-    mForceSynchronous = true;
-
-    return NO_ERROR;
-}
-
 status_t Composer::setCrop(const sp<SurfaceComposerClient>& client,
         SurfaceID id, const Rect& crop) {
     Mutex::Autolock _l(mLock);
     layer_state_t* s = getLayerStateLocked(client, id);
     if (!s)
         return BAD_INDEX;
-    s->what |= ISurfaceComposer::eCropChanged;
+    s->what |= layer_state_t::eCropChanged;
     s->crop = crop;
     return NO_ERROR;
 }
 
 // ---------------------------------------------------------------------------
 
+DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
+    DisplayState s;
+    s.token = token;
+    ssize_t index = mDisplayStates.indexOf(s);
+    if (index < 0) {
+        // we don't have it, add an initialized layer_state to our list
+        s.what = 0;
+        index = mDisplayStates.add(s);
+    }
+    return mDisplayStates.editItemAt(index);
+}
+
+void Composer::setDisplaySurface(const sp<IBinder>& token,
+        const sp<ISurfaceTexture>& surface) {
+    Mutex::Autolock _l(mLock);
+    DisplayState& s(getDisplayStateLocked(token));
+    s.surface = surface;
+    s.what |= DisplayState::eSurfaceChanged;
+}
+
+void Composer::setDisplayLayerStack(const sp<IBinder>& token,
+        uint32_t layerStack) {
+    Mutex::Autolock _l(mLock);
+    DisplayState& s(getDisplayStateLocked(token));
+    s.layerStack = layerStack;
+    s.what |= DisplayState::eLayerStackChanged;
+}
+
+void Composer::setDisplayOrientation(const sp<IBinder>& token,
+        uint32_t orientation) {
+    Mutex::Autolock _l(mLock);
+    DisplayState& s(getDisplayStateLocked(token));
+    s.orientation = orientation;
+    s.what |= DisplayState::eOrientationChanged;
+    mForceSynchronous = true; // TODO: do we actually still need this?
+}
+
+// FIXME: get rid of this eventually
+status_t Composer::setOrientation(int orientation) {
+    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
+    sp<IBinder> token(sm->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    Composer::setDisplayOrientation(token, orientation);
+    return NO_ERROR;
+}
+
+void Composer::setDisplayViewport(const sp<IBinder>& token,
+        const Rect& viewport) {
+    Mutex::Autolock _l(mLock);
+    DisplayState& s(getDisplayStateLocked(token));
+    s.viewport = viewport;
+    s.what |= DisplayState::eViewportChanged;
+}
+
+void Composer::setDisplayFrame(const sp<IBinder>& token,
+        const Rect& frame) {
+    Mutex::Autolock _l(mLock);
+    DisplayState& s(getDisplayStateLocked(token));
+    s.frame = frame;
+    s.what |= DisplayState::eFrameChanged;
+}
+
+// ---------------------------------------------------------------------------
+
 SurfaceComposerClient::SurfaceComposerClient()
     : mStatus(NO_INIT), mComposer(Composer::getInstance())
 {
 }
 
 void SurfaceComposerClient::onFirstRef() {
-    sp<ISurfaceComposer> sm(getComposerService());
+    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
     if (sm != 0) {
         sp<ISurfaceComposerClient> conn = sm->createConnection();
         if (conn != 0) {
@@ -336,7 +392,7 @@
 status_t SurfaceComposerClient::linkToComposerDeath(
         const sp<IBinder::DeathRecipient>& recipient,
         void* cookie, uint32_t flags) {
-    sp<ISurfaceComposer> sm(getComposerService());
+    sp<ISurfaceComposer> sm(ComposerService::getComposerService());
     return sm->asBinder()->linkToDeath(recipient, cookie, flags);
 }
 
@@ -352,25 +408,7 @@
 }
 
 sp<SurfaceControl> SurfaceComposerClient::createSurface(
-        DisplayID display,
-        uint32_t w,
-        uint32_t h,
-        PixelFormat format,
-        uint32_t flags)
-{
-    String8 name;
-    const size_t SIZE = 128;
-    char buffer[SIZE];
-    snprintf(buffer, SIZE, "<pid_%d>", getpid());
-    name.append(buffer);
-
-    return SurfaceComposerClient::createSurface(name, display,
-            w, h, format, flags);
-}
-
-sp<SurfaceControl> SurfaceComposerClient::createSurface(
         const String8& name,
-        DisplayID display,
         uint32_t w,
         uint32_t h,
         PixelFormat format,
@@ -380,7 +418,7 @@
     if (mStatus == NO_ERROR) {
         ISurfaceComposerClient::surface_data_t data;
         sp<ISurface> surface = mClient->createSurface(&data, name,
-                display, w, h, format, flags);
+                w, h, format, flags);
         if (surface != 0) {
             result = new SurfaceControl(this, surface, data);
         }
@@ -388,6 +426,14 @@
     return result;
 }
 
+sp<IBinder> SurfaceComposerClient::createDisplay() {
+    return Composer::getInstance().createDisplay();
+}
+
+sp<IBinder> SurfaceComposerClient::getBuiltInDisplay(int32_t id) {
+    return Composer::getInstance().getBuiltInDisplay(id);
+}
+
 status_t SurfaceComposerClient::destroySurface(SurfaceID sid) {
     if (mStatus != NO_ERROR)
         return mStatus;
@@ -415,10 +461,6 @@
     return getComposer().setCrop(this, id, crop);
 }
 
-status_t SurfaceComposerClient::setFreezeTint(SurfaceID id, uint32_t tint) {
-    return getComposer().setFreezeTint(this, id, tint);
-}
-
 status_t SurfaceComposerClient::setPosition(SurfaceID id, float x, float y) {
     return getComposer().setPosition(this, id, x, y);
 }
@@ -433,26 +475,14 @@
 
 status_t SurfaceComposerClient::hide(SurfaceID id) {
     return getComposer().setFlags(this, id,
-            ISurfaceComposer::eLayerHidden,
-            ISurfaceComposer::eLayerHidden);
+            layer_state_t::eLayerHidden,
+            layer_state_t::eLayerHidden);
 }
 
-status_t SurfaceComposerClient::show(SurfaceID id, int32_t) {
+status_t SurfaceComposerClient::show(SurfaceID id) {
     return getComposer().setFlags(this, id,
             0,
-            ISurfaceComposer::eLayerHidden);
-}
-
-status_t SurfaceComposerClient::freeze(SurfaceID id) {
-    return getComposer().setFlags(this, id,
-            ISurfaceComposer::eLayerFrozen,
-            ISurfaceComposer::eLayerFrozen);
-}
-
-status_t SurfaceComposerClient::unfreeze(SurfaceID id) {
-    return getComposer().setFlags(this, id,
-            0,
-            ISurfaceComposer::eLayerFrozen);
+            layer_state_t::eLayerHidden);
 }
 
 status_t SurfaceComposerClient::setFlags(SurfaceID id, uint32_t flags,
@@ -469,89 +499,57 @@
     return getComposer().setAlpha(this, id, alpha);
 }
 
+status_t SurfaceComposerClient::setLayerStack(SurfaceID id, uint32_t layerStack) {
+    return getComposer().setLayerStack(this, id, layerStack);
+}
+
 status_t SurfaceComposerClient::setMatrix(SurfaceID id, float dsdx, float dtdx,
         float dsdy, float dtdy) {
     return getComposer().setMatrix(this, id, dsdx, dtdx, dsdy, dtdy);
 }
 
-status_t SurfaceComposerClient::setOrientation(DisplayID dpy,
-        int orientation, uint32_t flags)
-{
-    return Composer::getInstance().setOrientation(orientation);
+// ----------------------------------------------------------------------------
+
+void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
+        const sp<ISurfaceTexture>& surface) {
+    Composer::getInstance().setDisplaySurface(token, surface);
+}
+
+void SurfaceComposerClient::setDisplayLayerStack(const sp<IBinder>& token,
+        uint32_t layerStack) {
+    Composer::getInstance().setDisplayLayerStack(token, layerStack);
+}
+
+void SurfaceComposerClient::setDisplayOrientation(const sp<IBinder>& token,
+        uint32_t orientation) {
+    Composer::getInstance().setDisplayOrientation(token, orientation);
+}
+
+void SurfaceComposerClient::setDisplayViewport(const sp<IBinder>& token,
+        const Rect& viewport) {
+    Composer::getInstance().setDisplayViewport(token, viewport);
+}
+
+void SurfaceComposerClient::setDisplayFrame(const sp<IBinder>& token,
+        const Rect& frame) {
+    Composer::getInstance().setDisplayFrame(token, frame);
 }
 
 // ----------------------------------------------------------------------------
 
 status_t SurfaceComposerClient::getDisplayInfo(
-        DisplayID dpy, DisplayInfo* info)
+        const sp<IBinder>& display, DisplayInfo* info)
 {
-    if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
-        return BAD_VALUE;
-
-    volatile surface_flinger_cblk_t const * cblk = get_cblk();
-    volatile display_cblk_t const * dcblk = cblk->displays + dpy;
-
-    info->w              = dcblk->w;
-    info->h              = dcblk->h;
-    info->orientation    = dcblk->orientation;
-    info->xdpi           = dcblk->xdpi;
-    info->ydpi           = dcblk->ydpi;
-    info->fps            = dcblk->fps;
-    info->density        = dcblk->density;
-    return getPixelFormatInfo(dcblk->format, &(info->pixelFormatInfo));
+    return ComposerService::getComposerService()->getDisplayInfo(display, info);
 }
 
-ssize_t SurfaceComposerClient::getDisplayWidth(DisplayID dpy)
+// TODO: Remove me.  Do not use.
+// This is a compatibility shim for one product whose drivers are depending on
+// this legacy function (when they shouldn't).
+status_t SurfaceComposerClient::getDisplayInfo(
+        int32_t displayId, DisplayInfo* info)
 {
-    if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
-        return BAD_VALUE;
-    volatile surface_flinger_cblk_t const * cblk = get_cblk();
-    volatile display_cblk_t const * dcblk = cblk->displays + dpy;
-    return dcblk->w;
-}
-
-ssize_t SurfaceComposerClient::getDisplayHeight(DisplayID dpy)
-{
-    if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
-        return BAD_VALUE;
-    volatile surface_flinger_cblk_t const * cblk = get_cblk();
-    volatile display_cblk_t const * dcblk = cblk->displays + dpy;
-    return dcblk->h;
-}
-
-ssize_t SurfaceComposerClient::getDisplayOrientation(DisplayID dpy)
-{
-    if (uint32_t(dpy)>=NUM_DISPLAY_MAX)
-        return BAD_VALUE;
-    volatile surface_flinger_cblk_t const * cblk = get_cblk();
-    volatile display_cblk_t const * dcblk = cblk->displays + dpy;
-    return dcblk->orientation;
-}
-
-ssize_t SurfaceComposerClient::getNumberOfDisplays()
-{
-    volatile surface_flinger_cblk_t const * cblk = get_cblk();
-    uint32_t connected = cblk->connected;
-    int n = 0;
-    while (connected) {
-        if (connected&1) n++;
-        connected >>= 1;
-    }
-    return n;
-}
-
-// ----------------------------------------------------------------------------
-
-status_t SurfaceComposerClient::freezeDisplay(DisplayID dpy, uint32_t flags)
-{
-    // This has been made a no-op because it can cause Gralloc buffer deadlocks.
-    return NO_ERROR;
-}
-
-status_t SurfaceComposerClient::unfreezeDisplay(DisplayID dpy, uint32_t flags)
-{
-    // This has been made a no-op because it can cause Gralloc buffer deadlocks.
-    return NO_ERROR;
+    return getDisplayInfo(getBuiltInDisplay(displayId), info);
 }
 
 // ----------------------------------------------------------------------------
@@ -560,30 +558,32 @@
     : mWidth(0), mHeight(0), mFormat(PIXEL_FORMAT_NONE) {
 }
 
-status_t ScreenshotClient::update() {
+status_t ScreenshotClient::update(const sp<IBinder>& display) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     mHeap = 0;
-    return s->captureScreen(0, &mHeap,
+    return s->captureScreen(display, &mHeap,
             &mWidth, &mHeight, &mFormat, 0, 0,
             0, -1UL);
 }
 
-status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight) {
+status_t ScreenshotClient::update(const sp<IBinder>& display,
+        uint32_t reqWidth, uint32_t reqHeight) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     mHeap = 0;
-    return s->captureScreen(0, &mHeap,
+    return s->captureScreen(display, &mHeap,
             &mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
             0, -1UL);
 }
 
-status_t ScreenshotClient::update(uint32_t reqWidth, uint32_t reqHeight,
+status_t ScreenshotClient::update(const sp<IBinder>& display,
+        uint32_t reqWidth, uint32_t reqHeight,
         uint32_t minLayerZ, uint32_t maxLayerZ) {
     sp<ISurfaceComposer> s(ComposerService::getComposerService());
     if (s == NULL) return NO_INIT;
     mHeap = 0;
-    return s->captureScreen(0, &mHeap,
+    return s->captureScreen(display, &mHeap,
             &mWidth, &mHeight, &mFormat, reqWidth, reqHeight,
             minLayerZ, maxLayerZ);
 }
diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
index 55be4bc..c0b20df 100644
--- a/libs/gui/SurfaceTexture.cpp
+++ b/libs/gui/SurfaceTexture.cpp
@@ -98,14 +98,10 @@
 
 static void mtxMul(float out[16], const float a[16], const float b[16]);
 
-// Get an ID that's unique within this process.
-static int32_t createProcessUniqueId() {
-    static volatile int32_t globalCounter = 0;
-    return android_atomic_inc(&globalCounter);
-}
 
 SurfaceTexture::SurfaceTexture(GLuint tex, bool allowSynchronousMode,
         GLenum texTarget, bool useFenceSync, const sp<BufferQueue> &bufferQueue) :
+    ConsumerBase(bufferQueue == 0 ? new BufferQueue(allowSynchronousMode) : bufferQueue),
     mCurrentTransform(0),
     mCurrentTimestamp(0),
     mFilteringEnabled(true),
@@ -118,47 +114,15 @@
     mTexTarget(texTarget),
     mEglDisplay(EGL_NO_DISPLAY),
     mEglContext(EGL_NO_CONTEXT),
-    mAbandoned(false),
     mCurrentTexture(BufferQueue::INVALID_BUFFER_SLOT),
     mAttached(true)
 {
-    // Choose a name using the PID and a process-unique ID.
-    mName = String8::format("unnamed-%d-%d", getpid(), createProcessUniqueId());
     ST_LOGV("SurfaceTexture");
-    if (bufferQueue == 0) {
-        ST_LOGV("Creating a new BufferQueue");
-        mBufferQueue = new BufferQueue(allowSynchronousMode);
-    }
-    else {
-        mBufferQueue = bufferQueue;
-    }
 
     memcpy(mCurrentTransformMatrix, mtxIdentity,
             sizeof(mCurrentTransformMatrix));
 
-    // Note that we can't create an sp<...>(this) in a ctor that will not keep a
-    // reference once the ctor ends, as that would cause the refcount of 'this'
-    // dropping to 0 at the end of the ctor.  Since all we need is a wp<...>
-    // that's what we create.
-    wp<BufferQueue::ConsumerListener> listener;
-    sp<BufferQueue::ConsumerListener> proxy;
-    listener = static_cast<BufferQueue::ConsumerListener*>(this);
-    proxy = new BufferQueue::ProxyConsumerListener(listener);
-
-    status_t err = mBufferQueue->consumerConnect(proxy);
-    if (err != NO_ERROR) {
-        ST_LOGE("SurfaceTexture: error connecting to BufferQueue: %s (%d)",
-                strerror(-err), err);
-    } else {
-        mBufferQueue->setConsumerName(mName);
-        mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
-    }
-}
-
-SurfaceTexture::~SurfaceTexture() {
-    ST_LOGV("~SurfaceTexture");
-
-    abandon();
+    mBufferQueue->setConsumerUsageBits(DEFAULT_USAGE_FLAGS);
 }
 
 status_t SurfaceTexture::setBufferCountServer(int bufferCount) {
@@ -179,6 +143,44 @@
     return SurfaceTexture::updateTexImage(NULL);
 }
 
+status_t SurfaceTexture::acquireBufferLocked(BufferQueue::BufferItem *item) {
+    status_t err = ConsumerBase::acquireBufferLocked(item);
+    if (err != NO_ERROR) {
+        return err;
+    }
+
+    int slot = item->mBuf;
+    if (item->mGraphicBuffer != NULL) {
+        if (mEglSlots[slot].mEglImage != EGL_NO_IMAGE_KHR) {
+            eglDestroyImageKHR(mEglDisplay, mEglSlots[slot].mEglImage);
+            mEglSlots[slot].mEglImage = EGL_NO_IMAGE_KHR;
+        }
+    }
+
+    // Update the GL texture object. We may have to do this even when
+    // item.mGraphicBuffer == NULL, if we destroyed the EGLImage when
+    // detaching from a context but the buffer has not been re-allocated.
+    if (mEglSlots[slot].mEglImage == EGL_NO_IMAGE_KHR) {
+        EGLImageKHR image = createImage(mEglDisplay, mSlots[slot].mGraphicBuffer);
+        if (image == EGL_NO_IMAGE_KHR) {
+            return UNKNOWN_ERROR;
+        }
+        mEglSlots[slot].mEglImage = image;
+    }
+
+    return NO_ERROR;
+}
+
+status_t SurfaceTexture::releaseBufferLocked(int buf, EGLDisplay display,
+       EGLSyncKHR eglFence, const sp<Fence>& fence) {
+    status_t err = ConsumerBase::releaseBufferLocked(buf, mEglDisplay,
+           eglFence, fence);
+
+    mEglSlots[mCurrentTexture].mEglFence = EGL_NO_SYNC_KHR;
+
+    return err;
+}
+
 status_t SurfaceTexture::updateTexImage(BufferRejecter* rejecter) {
     ATRACE_CALL();
     ST_LOGV("updateTexImage");
@@ -219,106 +221,74 @@
 
     // In asynchronous mode the list is guaranteed to be one buffer
     // deep, while in synchronous mode we use the oldest buffer.
-    err = mBufferQueue->acquireBuffer(&item);
+    err = acquireBufferLocked(&item);
     if (err == NO_ERROR) {
         int buf = item.mBuf;
-        // This buffer was newly allocated, so we need to clean up on our side
-        if (item.mGraphicBuffer != NULL) {
-            mEGLSlots[buf].mGraphicBuffer = 0;
-            if (mEGLSlots[buf].mEglImage != EGL_NO_IMAGE_KHR) {
-                eglDestroyImageKHR(dpy, mEGLSlots[buf].mEglImage);
-                mEGLSlots[buf].mEglImage = EGL_NO_IMAGE_KHR;
-            }
-            mEGLSlots[buf].mGraphicBuffer = item.mGraphicBuffer;
-        }
 
         // we call the rejecter here, in case the caller has a reason to
         // not accept this buffer. this is used by SurfaceFlinger to
         // reject buffers which have the wrong size
-        if (rejecter && rejecter->reject(mEGLSlots[buf].mGraphicBuffer, item)) {
-            mBufferQueue->releaseBuffer(buf, dpy, mEGLSlots[buf].mFence);
-            mEGLSlots[buf].mFence = EGL_NO_SYNC_KHR;
+        if (rejecter && rejecter->reject(mSlots[buf].mGraphicBuffer, item)) {
+            releaseBufferLocked(buf, dpy, EGL_NO_SYNC_KHR, item.mFence);
             glBindTexture(mTexTarget, mTexName);
             return NO_ERROR;
         }
 
-        // Update the GL texture object. We may have to do this even when
-        // item.mGraphicBuffer == NULL, if we destroyed the EGLImage when
-        // detaching from a context but the buffer has not been re-allocated.
-        EGLImageKHR image = mEGLSlots[buf].mEglImage;
-        if (image == EGL_NO_IMAGE_KHR) {
-            if (mEGLSlots[buf].mGraphicBuffer == NULL) {
-                ST_LOGE("updateTexImage: buffer at slot %d is null", buf);
-                err = BAD_VALUE;
-            } else {
-                image = createImage(dpy, mEGLSlots[buf].mGraphicBuffer);
-                mEGLSlots[buf].mEglImage = image;
-                if (image == EGL_NO_IMAGE_KHR) {
-                    // NOTE: if dpy was invalid, createImage() is guaranteed to
-                    // fail. so we'd end up here.
-                    err = UNKNOWN_ERROR;
-                }
-            }
+        GLint error;
+        while ((error = glGetError()) != GL_NO_ERROR) {
+            ST_LOGW("updateTexImage: clearing GL error: %#04x", error);
+        }
+
+        EGLImageKHR image = mEglSlots[buf].mEglImage;
+        glBindTexture(mTexTarget, mTexName);
+        glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);
+
+        while ((error = glGetError()) != GL_NO_ERROR) {
+            ST_LOGE("updateTexImage: error binding external texture image %p "
+                    "(slot %d): %#04x", image, buf, error);
+            err = UNKNOWN_ERROR;
         }
 
         if (err == NO_ERROR) {
-            GLint error;
-            while ((error = glGetError()) != GL_NO_ERROR) {
-                ST_LOGW("updateTexImage: clearing GL error: %#04x", error);
-            }
-
-            glBindTexture(mTexTarget, mTexName);
-            glEGLImageTargetTexture2DOES(mTexTarget, (GLeglImageOES)image);
-
-            while ((error = glGetError()) != GL_NO_ERROR) {
-                ST_LOGE("updateTexImage: error binding external texture image %p "
-                        "(slot %d): %#04x", image, buf, error);
-                err = UNKNOWN_ERROR;
-            }
-
-            if (err == NO_ERROR) {
-                err = syncForReleaseLocked(dpy);
-            }
+            err = syncForReleaseLocked(dpy);
         }
 
         if (err != NO_ERROR) {
             // Release the buffer we just acquired.  It's not safe to
             // release the old buffer, so instead we just drop the new frame.
-            mBufferQueue->releaseBuffer(buf, dpy, mEGLSlots[buf].mFence);
-            mEGLSlots[buf].mFence = EGL_NO_SYNC_KHR;
+            releaseBufferLocked(buf, dpy, EGL_NO_SYNC_KHR, item.mFence);
             return err;
         }
 
         ST_LOGV("updateTexImage: (slot=%d buf=%p) -> (slot=%d buf=%p)",
                 mCurrentTexture,
                 mCurrentTextureBuf != NULL ? mCurrentTextureBuf->handle : 0,
-                buf, item.mGraphicBuffer != NULL ? item.mGraphicBuffer->handle : 0);
+                buf, mSlots[buf].mGraphicBuffer->handle);
 
         // release old buffer
         if (mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
-            status_t status = mBufferQueue->releaseBuffer(mCurrentTexture, dpy,
-                    mEGLSlots[mCurrentTexture].mFence);
-
-            mEGLSlots[mCurrentTexture].mFence = EGL_NO_SYNC_KHR;
-            if (status == BufferQueue::STALE_BUFFER_SLOT) {
-                freeBufferLocked(mCurrentTexture);
-            } else if (status != NO_ERROR) {
-                ST_LOGE("updateTexImage: released invalid buffer");
+            status_t status = releaseBufferLocked(mCurrentTexture, dpy,
+                    mEglSlots[mCurrentTexture].mEglFence,
+                    mSlots[mCurrentTexture].mFence);
+            if (status != NO_ERROR && status != BufferQueue::STALE_BUFFER_SLOT) {
+                ST_LOGE("updateTexImage: failed to release buffer: %s (%d)",
+                       strerror(-status), status);
                 err = status;
             }
         }
 
         // Update the SurfaceTexture state.
         mCurrentTexture = buf;
-        mCurrentTextureBuf = mEGLSlots[buf].mGraphicBuffer;
+        mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
         mCurrentCrop = item.mCrop;
         mCurrentTransform = item.mTransform;
         mCurrentScalingMode = item.mScalingMode;
         mCurrentTimestamp = item.mTimestamp;
+        mCurrentFence = item.mFence;
         computeCurrentTransformMatrix();
     } else  {
         if (err < 0) {
-            ALOGE("updateTexImage failed on acquire %d", err);
+            ST_LOGE("updateTexImage failed on acquire %d", err);
         }
         // We always bind the texture even if we don't update its contents.
         glBindTexture(mTexTarget, mTexName);
@@ -328,6 +298,27 @@
     return err;
 }
 
+void SurfaceTexture::setReleaseFence(int fenceFd) {
+    sp<Fence> fence(new Fence(fenceFd));
+    if (fenceFd == -1 || mCurrentTexture == BufferQueue::INVALID_BUFFER_SLOT)
+        return;
+    if (!mSlots[mCurrentTexture].mFence.get()) {
+        mSlots[mCurrentTexture].mFence = fence;
+    } else {
+        sp<Fence> mergedFence = Fence::merge(
+                String8("SurfaceTexture merged release"),
+                mSlots[mCurrentTexture].mFence, fence);
+        if (!mergedFence.get()) {
+            ST_LOGE("failed to merge release fences");
+            // synchronization is broken, the best we can do is hope fences
+            // signal in order so the new fence will act like a union
+            mSlots[mCurrentTexture].mFence = fence;
+            return;
+        }
+        mSlots[mCurrentTexture].mFence = mergedFence;
+    }
+}
+
 status_t SurfaceTexture::detachFromContext() {
     ATRACE_CALL();
     ST_LOGV("detachFromContext");
@@ -371,10 +362,10 @@
     // SurfaceTexture gets attached to a new OpenGL ES context (and thus gets a
     // new EGLDisplay).
     for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
-        EGLImageKHR img = mEGLSlots[i].mEglImage;
+        EGLImageKHR img = mEglSlots[i].mEglImage;
         if (img != EGL_NO_IMAGE_KHR) {
             eglDestroyImageKHR(mEglDisplay, img);
-            mEGLSlots[i].mEglImage = EGL_NO_IMAGE_KHR;
+            mEglSlots[i].mEglImage = EGL_NO_IMAGE_KHR;
         }
     }
 
@@ -462,7 +453,7 @@
     ST_LOGV("syncForReleaseLocked");
 
     if (mUseFenceSync && mCurrentTexture != BufferQueue::INVALID_BUFFER_SLOT) {
-        EGLSyncKHR fence = mEGLSlots[mCurrentTexture].mFence;
+        EGLSyncKHR fence = mEglSlots[mCurrentTexture].mEglFence;
         if (fence != EGL_NO_SYNC_KHR) {
             // There is already a fence for the current slot.  We need to wait
             // on that before replacing it with another fence to ensure that all
@@ -490,7 +481,7 @@
             return UNKNOWN_ERROR;
         }
         glFlush();
-        mEGLSlots[mCurrentTexture].mFence = fence;
+        mEglSlots[mCurrentTexture].mEglFence = fence;
     }
 
     return OK;
@@ -587,11 +578,13 @@
                     // We know there's no subsampling of any channels, so we
                     // only need to shrink by a half a pixel.
                     shrinkAmount = 0.5;
+                    break;
 
                 default:
                     // If we don't recognize the format, we must assume the
                     // worst case (that we care about), which is YUV420.
                     shrinkAmount = 1.0;
+                    break;
             }
         }
 
@@ -631,13 +624,6 @@
     return mCurrentTimestamp;
 }
 
-void SurfaceTexture::setFrameAvailableListener(
-        const sp<FrameAvailableListener>& listener) {
-    ST_LOGV("setFrameAvailableListener");
-    Mutex::Autolock lock(mMutex);
-    mFrameAvailableListener = listener;
-}
-
 EGLImageKHR SurfaceTexture::createImage(EGLDisplay dpy,
         const sp<GraphicBuffer>& graphicBuffer) {
     EGLClientBuffer cbuf = (EGLClientBuffer)graphicBuffer->getNativeBuffer();
@@ -705,6 +691,11 @@
     return mCurrentScalingMode;
 }
 
+sp<Fence> SurfaceTexture::getCurrentFence() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentFence;
+}
+
 bool SurfaceTexture::isSynchronousMode() const {
     Mutex::Autolock lock(mMutex);
     return mBufferQueue->isSynchronousMode();
@@ -712,35 +703,22 @@
 
 void SurfaceTexture::freeBufferLocked(int slotIndex) {
     ST_LOGV("freeBufferLocked: slotIndex=%d", slotIndex);
-    mEGLSlots[slotIndex].mGraphicBuffer = 0;
     if (slotIndex == mCurrentTexture) {
         mCurrentTexture = BufferQueue::INVALID_BUFFER_SLOT;
     }
-    EGLImageKHR img = mEGLSlots[slotIndex].mEglImage;
+    EGLImageKHR img = mEglSlots[slotIndex].mEglImage;
     if (img != EGL_NO_IMAGE_KHR) {
         ST_LOGV("destroying EGLImage dpy=%p img=%p", mEglDisplay, img);
         eglDestroyImageKHR(mEglDisplay, img);
     }
-    mEGLSlots[slotIndex].mEglImage = EGL_NO_IMAGE_KHR;
+    mEglSlots[slotIndex].mEglImage = EGL_NO_IMAGE_KHR;
+    ConsumerBase::freeBufferLocked(slotIndex);
 }
 
-void SurfaceTexture::abandon() {
-    ST_LOGV("abandon");
-    Mutex::Autolock lock(mMutex);
-
-    if (!mAbandoned) {
-        mAbandoned = true;
-        mCurrentTextureBuf.clear();
-
-        // destroy all egl buffers
-        for (int i =0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
-            freeBufferLocked(i);
-        }
-
-        // disconnect from the BufferQueue
-        mBufferQueue->consumerDisconnect();
-        mBufferQueue.clear();
-    }
+void SurfaceTexture::abandonLocked() {
+    ST_LOGV("abandonLocked");
+    mCurrentTextureBuf.clear();
+    ConsumerBase::abandonLocked();
 }
 
 void SurfaceTexture::setName(const String8& name) {
@@ -772,71 +750,18 @@
     return mBufferQueue->setSynchronousMode(enabled);
 }
 
-// Used for refactoring, should not be in final interface
-sp<BufferQueue> SurfaceTexture::getBufferQueue() const {
-    Mutex::Autolock lock(mMutex);
-    return mBufferQueue;
-}
-
-void SurfaceTexture::onFrameAvailable() {
-    ST_LOGV("onFrameAvailable");
-
-    sp<FrameAvailableListener> listener;
-    { // scope for the lock
-        Mutex::Autolock lock(mMutex);
-        listener = mFrameAvailableListener;
-    }
-
-    if (listener != NULL) {
-        ST_LOGV("actually calling onFrameAvailable");
-        listener->onFrameAvailable();
-    }
-}
-
-void SurfaceTexture::onBuffersReleased() {
-    ST_LOGV("onBuffersReleased");
-
-    Mutex::Autolock lock(mMutex);
-
-    if (mAbandoned) {
-        // Nothing to do if we're already abandoned.
-        return;
-    }
-
-    uint32_t mask = 0;
-    mBufferQueue->getReleasedBuffers(&mask);
-    for (int i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
-        if (mask & (1 << i)) {
-            freeBufferLocked(i);
-        }
-    }
-}
-
-void SurfaceTexture::dump(String8& result) const
+void SurfaceTexture::dumpLocked(String8& result, const char* prefix,
+        char* buffer, size_t size) const
 {
-    char buffer[1024];
-    dump(result, "", buffer, 1024);
-}
-
-void SurfaceTexture::dump(String8& result, const char* prefix,
-        char* buffer, size_t SIZE) const
-{
-    Mutex::Autolock _l(mMutex);
-    snprintf(buffer, SIZE, "%smTexName=%d, mAbandoned=%d\n", prefix, mTexName,
-            int(mAbandoned));
+    snprintf(buffer, size,
+       "%smTexName=%d mCurrentTexture=%d\n"
+       "%smCurrentCrop=[%d,%d,%d,%d] mCurrentTransform=%#x\n",
+       prefix, mTexName, mCurrentTexture, prefix, mCurrentCrop.left,
+       mCurrentCrop.top, mCurrentCrop.right, mCurrentCrop.bottom,
+       mCurrentTransform);
     result.append(buffer);
 
-    snprintf(buffer, SIZE,
-            "%snext   : {crop=[%d,%d,%d,%d], transform=0x%02x, current=%d}\n",
-            prefix, mCurrentCrop.left,
-            mCurrentCrop.top, mCurrentCrop.right, mCurrentCrop.bottom,
-            mCurrentTransform, mCurrentTexture
-    );
-    result.append(buffer);
-
-    if (!mAbandoned) {
-        mBufferQueue->dump(result, prefix, buffer, SIZE);
-    }
+    ConsumerBase::dumpLocked(result, prefix, buffer, size);
 }
 
 static void mtxMul(float out[16], const float a[16], const float b[16]) {
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index f60f902..18a0c10 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -23,6 +23,8 @@
 #include <utils/Log.h>
 #include <utils/Trace.h>
 
+#include <ui/Fence.h>
+
 #include <gui/ISurfaceComposer.h>
 #include <gui/SurfaceComposerClient.h>
 #include <gui/SurfaceTexture.h>
@@ -62,11 +64,15 @@
     ANativeWindow::setSwapInterval  = hook_setSwapInterval;
     ANativeWindow::dequeueBuffer    = hook_dequeueBuffer;
     ANativeWindow::cancelBuffer     = hook_cancelBuffer;
-    ANativeWindow::lockBuffer       = hook_lockBuffer;
     ANativeWindow::queueBuffer      = hook_queueBuffer;
     ANativeWindow::query            = hook_query;
     ANativeWindow::perform          = hook_perform;
 
+    ANativeWindow::dequeueBuffer_DEPRECATED = hook_dequeueBuffer_DEPRECATED;
+    ANativeWindow::cancelBuffer_DEPRECATED  = hook_cancelBuffer_DEPRECATED;
+    ANativeWindow::lockBuffer_DEPRECATED    = hook_lockBuffer_DEPRECATED;
+    ANativeWindow::queueBuffer_DEPRECATED   = hook_queueBuffer_DEPRECATED;
+
     const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
     const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
 
@@ -103,27 +109,54 @@
 }
 
 int SurfaceTextureClient::hook_dequeueBuffer(ANativeWindow* window,
-        ANativeWindowBuffer** buffer) {
+        ANativeWindowBuffer** buffer, int* fenceFd) {
     SurfaceTextureClient* c = getSelf(window);
-    return c->dequeueBuffer(buffer);
+    return c->dequeueBuffer(buffer, fenceFd);
 }
 
 int SurfaceTextureClient::hook_cancelBuffer(ANativeWindow* window,
-        ANativeWindowBuffer* buffer) {
+        ANativeWindowBuffer* buffer, int fenceFd) {
     SurfaceTextureClient* c = getSelf(window);
-    return c->cancelBuffer(buffer);
-}
-
-int SurfaceTextureClient::hook_lockBuffer(ANativeWindow* window,
-        ANativeWindowBuffer* buffer) {
-    SurfaceTextureClient* c = getSelf(window);
-    return c->lockBuffer(buffer);
+    return c->cancelBuffer(buffer, fenceFd);
 }
 
 int SurfaceTextureClient::hook_queueBuffer(ANativeWindow* window,
+        ANativeWindowBuffer* buffer, int fenceFd) {
+    SurfaceTextureClient* c = getSelf(window);
+    return c->queueBuffer(buffer, fenceFd);
+}
+
+int SurfaceTextureClient::hook_dequeueBuffer_DEPRECATED(ANativeWindow* window,
+        ANativeWindowBuffer** buffer) {
+    SurfaceTextureClient* c = getSelf(window);
+    int fenceFd = -1;
+    int result = c->dequeueBuffer(buffer, &fenceFd);
+    sp<Fence> fence(new Fence(fenceFd));
+    int waitResult = fence->wait(Fence::TIMEOUT_NEVER);
+    if (waitResult != OK) {
+        ALOGE("hook_dequeueBuffer_DEPRECATED: Fence::wait returned an "
+                "error: %d", waitResult);
+        return waitResult;
+    }
+    return result;
+}
+
+int SurfaceTextureClient::hook_cancelBuffer_DEPRECATED(ANativeWindow* window,
         ANativeWindowBuffer* buffer) {
     SurfaceTextureClient* c = getSelf(window);
-    return c->queueBuffer(buffer);
+    return c->cancelBuffer(buffer, -1);
+}
+
+int SurfaceTextureClient::hook_lockBuffer_DEPRECATED(ANativeWindow* window,
+        ANativeWindowBuffer* buffer) {
+    SurfaceTextureClient* c = getSelf(window);
+    return c->lockBuffer_DEPRECATED(buffer);
+}
+
+int SurfaceTextureClient::hook_queueBuffer_DEPRECATED(ANativeWindow* window,
+        ANativeWindowBuffer* buffer) {
+    SurfaceTextureClient* c = getSelf(window);
+    return c->queueBuffer(buffer, -1);
 }
 
 int SurfaceTextureClient::hook_query(const ANativeWindow* window,
@@ -157,14 +190,16 @@
     return res;
 }
 
-int SurfaceTextureClient::dequeueBuffer(android_native_buffer_t** buffer) {
+int SurfaceTextureClient::dequeueBuffer(android_native_buffer_t** buffer,
+        int* fenceFd) {
     ATRACE_CALL();
     ALOGV("SurfaceTextureClient::dequeueBuffer");
     Mutex::Autolock lock(mMutex);
     int buf = -1;
     int reqW = mReqWidth ? mReqWidth : mUserWidth;
     int reqH = mReqHeight ? mReqHeight : mUserHeight;
-    status_t result = mSurfaceTexture->dequeueBuffer(&buf, reqW, reqH,
+    sp<Fence> fence;
+    status_t result = mSurfaceTexture->dequeueBuffer(&buf, fence, reqW, reqH,
             mReqFormat, mReqUsage);
     if (result < 0) {
         ALOGV("dequeueBuffer: ISurfaceTexture::dequeueBuffer(%d, %d, %d, %d)"
@@ -185,11 +220,25 @@
             return result;
         }
     }
+
+    if (fence.get()) {
+        *fenceFd = fence->dup();
+        if (*fenceFd == -1) {
+            ALOGE("dequeueBuffer: error duping fence: %d", errno);
+            // dup() should never fail; something is badly wrong. Soldier on
+            // and hope for the best; the worst that should happen is some
+            // visible corruption that lasts until the next frame.
+        }
+    } else {
+        *fenceFd = -1;
+    }
+
     *buffer = gbuf.get();
     return OK;
 }
 
-int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer) {
+int SurfaceTextureClient::cancelBuffer(android_native_buffer_t* buffer,
+        int fenceFd) {
     ATRACE_CALL();
     ALOGV("SurfaceTextureClient::cancelBuffer");
     Mutex::Autolock lock(mMutex);
@@ -197,7 +246,8 @@
     if (i < 0) {
         return i;
     }
-    mSurfaceTexture->cancelBuffer(i);
+    sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : NULL);
+    mSurfaceTexture->cancelBuffer(i, fence);
     return OK;
 }
 
@@ -214,13 +264,13 @@
     return BAD_VALUE;
 }
 
-int SurfaceTextureClient::lockBuffer(android_native_buffer_t* buffer) {
+int SurfaceTextureClient::lockBuffer_DEPRECATED(android_native_buffer_t* buffer) {
     ALOGV("SurfaceTextureClient::lockBuffer");
     Mutex::Autolock lock(mMutex);
     return OK;
 }
 
-int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer) {
+int SurfaceTextureClient::queueBuffer(android_native_buffer_t* buffer, int fenceFd) {
     ATRACE_CALL();
     ALOGV("SurfaceTextureClient::queueBuffer");
     Mutex::Autolock lock(mMutex);
@@ -237,13 +287,15 @@
         return i;
     }
 
+
     // Make sure the crop rectangle is entirely inside the buffer.
     Rect crop;
     mCrop.intersect(Rect(buffer->width, buffer->height), &crop);
 
+    sp<Fence> fence(fenceFd >= 0 ? new Fence(fenceFd) : NULL);
     ISurfaceTexture::QueueBufferOutput output;
     ISurfaceTexture::QueueBufferInput input(timestamp, crop, mScalingMode,
-            mTransform);
+            mTransform, fence);
     status_t err = mSurfaceTexture->queueBuffer(i, input, &output);
     if (err != OK)  {
         ALOGE("queueBuffer: error queuing buffer to SurfaceTexture, %d", err);
@@ -692,81 +744,86 @@
     }
 
     ANativeWindowBuffer* out;
-    status_t err = dequeueBuffer(&out);
+    int fenceFd = -1;
+    status_t err = dequeueBuffer(&out, &fenceFd);
     ALOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
     if (err == NO_ERROR) {
         sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
-        err = lockBuffer(backBuffer.get());
-        ALOGE_IF(err, "lockBuffer (handle=%p) failed (%s)",
-                backBuffer->handle, strerror(-err));
-        if (err == NO_ERROR) {
-            const Rect bounds(backBuffer->width, backBuffer->height);
+        sp<Fence> fence(new Fence(fenceFd));
 
-            Region newDirtyRegion;
-            if (inOutDirtyBounds) {
-                newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
-                newDirtyRegion.andSelf(bounds);
-            } else {
-                newDirtyRegion.set(bounds);
+        err = fence->wait(Fence::TIMEOUT_NEVER);
+        if (err != OK) {
+            ALOGE("Fence::wait failed (%s)", strerror(-err));
+            cancelBuffer(out, fenceFd);
+            return err;
+        }
+
+        const Rect bounds(backBuffer->width, backBuffer->height);
+
+        Region newDirtyRegion;
+        if (inOutDirtyBounds) {
+            newDirtyRegion.set(static_cast<Rect const&>(*inOutDirtyBounds));
+            newDirtyRegion.andSelf(bounds);
+        } else {
+            newDirtyRegion.set(bounds);
+        }
+
+        // figure out if we can copy the frontbuffer back
+        const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
+        const bool canCopyBack = (frontBuffer != 0 &&
+                backBuffer->width  == frontBuffer->width &&
+                backBuffer->height == frontBuffer->height &&
+                backBuffer->format == frontBuffer->format);
+
+        if (canCopyBack) {
+            // copy the area that is invalid and not repainted this round
+            const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
+            if (!copyback.isEmpty())
+                copyBlt(backBuffer, frontBuffer, copyback);
+        } else {
+            // if we can't copy-back anything, modify the user's dirty
+            // region to make sure they redraw the whole buffer
+            newDirtyRegion.set(bounds);
+            mDirtyRegion.clear();
+            Mutex::Autolock lock(mMutex);
+            for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
+                mSlots[i].dirtyRegion.clear();
             }
+        }
 
-            // figure out if we can copy the frontbuffer back
-            const sp<GraphicBuffer>& frontBuffer(mPostedBuffer);
-            const bool canCopyBack = (frontBuffer != 0 &&
-                    backBuffer->width  == frontBuffer->width &&
-                    backBuffer->height == frontBuffer->height &&
-                    backBuffer->format == frontBuffer->format);
 
-            if (canCopyBack) {
-                // copy the area that is invalid and not repainted this round
-                const Region copyback(mDirtyRegion.subtract(newDirtyRegion));
-                if (!copyback.isEmpty())
-                    copyBlt(backBuffer, frontBuffer, copyback);
-            } else {
-                // if we can't copy-back anything, modify the user's dirty
-                // region to make sure they redraw the whole buffer
-                newDirtyRegion.set(bounds);
-                mDirtyRegion.clear();
-                Mutex::Autolock lock(mMutex);
-                for (size_t i=0 ; i<NUM_BUFFER_SLOTS ; i++) {
-                    mSlots[i].dirtyRegion.clear();
-                }
+        { // scope for the lock
+            Mutex::Autolock lock(mMutex);
+            int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
+            if (backBufferSlot >= 0) {
+                Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
+                mDirtyRegion.subtract(dirtyRegion);
+                dirtyRegion = newDirtyRegion;
             }
+        }
 
+        mDirtyRegion.orSelf(newDirtyRegion);
+        if (inOutDirtyBounds) {
+            *inOutDirtyBounds = newDirtyRegion.getBounds();
+        }
 
-            { // scope for the lock
-                Mutex::Autolock lock(mMutex);
-                int backBufferSlot(getSlotFromBufferLocked(backBuffer.get()));
-                if (backBufferSlot >= 0) {
-                    Region& dirtyRegion(mSlots[backBufferSlot].dirtyRegion);
-                    mDirtyRegion.subtract(dirtyRegion);
-                    dirtyRegion = newDirtyRegion;
-                }
-            }
+        void* vaddr;
+        status_t res = backBuffer->lock(
+                GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
+                newDirtyRegion.bounds(), &vaddr);
 
-            mDirtyRegion.orSelf(newDirtyRegion);
-            if (inOutDirtyBounds) {
-                *inOutDirtyBounds = newDirtyRegion.getBounds();
-            }
+        ALOGW_IF(res, "failed locking buffer (handle = %p)",
+                backBuffer->handle);
 
-            void* vaddr;
-            status_t res = backBuffer->lock(
-                    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
-                    newDirtyRegion.bounds(), &vaddr);
-
-            ALOGW_IF(res, "failed locking buffer (handle = %p)",
-                    backBuffer->handle);
-
-            if (res != 0) {
-                err = INVALID_OPERATION;
-            } else {
-                mLockedBuffer = backBuffer;
-                outBuffer->width  = backBuffer->width;
-                outBuffer->height = backBuffer->height;
-                outBuffer->stride = backBuffer->stride;
-                outBuffer->format = backBuffer->format;
-                outBuffer->bits   = vaddr;
-            }
+        if (res != 0) {
+            err = INVALID_OPERATION;
+        } else {
+            mLockedBuffer = backBuffer;
+            outBuffer->width  = backBuffer->width;
+            outBuffer->height = backBuffer->height;
+            outBuffer->stride = backBuffer->stride;
+            outBuffer->format = backBuffer->format;
+            outBuffer->bits   = vaddr;
         }
     }
     return err;
@@ -782,7 +839,7 @@
     status_t err = mLockedBuffer->unlock();
     ALOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
 
-    err = queueBuffer(mLockedBuffer.get());
+    err = queueBuffer(mLockedBuffer.get(), -1);
     ALOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
             mLockedBuffer->handle, strerror(-err));
 
diff --git a/libs/gui/tests/Android.mk b/libs/gui/tests/Android.mk
index 741534b..e8863d3 100644
--- a/libs/gui/tests/Android.mk
+++ b/libs/gui/tests/Android.mk
@@ -2,14 +2,15 @@
 LOCAL_PATH:= $(call my-dir)
 include $(CLEAR_VARS)
 
-LOCAL_MODULE := SurfaceTexture_test
+LOCAL_MODULE := libgui_test
 
 LOCAL_MODULE_TAGS := tests
 
 LOCAL_SRC_FILES := \
-    Surface_test.cpp \
+    CpuConsumer_test.cpp \
     SurfaceTextureClient_test.cpp \
     SurfaceTexture_test.cpp \
+    Surface_test.cpp \
 
 LOCAL_SHARED_LIBRARIES := \
 	libEGL \
@@ -18,6 +19,7 @@
 	libcutils \
 	libgui \
 	libstlport \
+	libsync \
 	libui \
 	libutils \
 
diff --git a/libs/gui/tests/CpuConsumer_test.cpp b/libs/gui/tests/CpuConsumer_test.cpp
new file mode 100644
index 0000000..371fb8b
--- /dev/null
+++ b/libs/gui/tests/CpuConsumer_test.cpp
@@ -0,0 +1,503 @@
+/*
+ * Copyright (C) 2012 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 "CpuConsumer_test"
+//#define LOG_NDEBUG 0
+//#define LOG_NNDEBUG 0
+
+#ifdef LOG_NNDEBUG
+#define ALOGVV(...) ALOGV(__VA_ARGS__)
+#else
+#define ALOGVV(...) ((void)0)
+#endif
+
+#include <gtest/gtest.h>
+#include <gui/CpuConsumer.h>
+#include <gui/SurfaceTextureClient.h>
+#include <ui/GraphicBuffer.h>
+#include <utils/String8.h>
+#include <utils/Thread.h>
+#include <utils/Mutex.h>
+#include <utils/Condition.h>
+
+#include <ui/FramebufferNativeWindow.h>
+
+namespace android {
+
+struct CpuConsumerTestParams {
+    uint32_t width;
+    uint32_t height;
+    int maxLockedBuffers;
+    PixelFormat format;
+};
+
+::std::ostream& operator<<(::std::ostream& os, const CpuConsumerTestParams& p) {
+    return os << "[ (" << p.width << ", " << p.height << "), B:"
+              << p.maxLockedBuffers << ", F:0x"
+              << ::std::hex << p.format << "]";
+}
+
+class CpuConsumerTest : public ::testing::TestWithParam<CpuConsumerTestParams> {
+protected:
+
+    virtual void SetUp() {
+        const ::testing::TestInfo* const test_info =
+                ::testing::UnitTest::GetInstance()->current_test_info();
+        CpuConsumerTestParams params = GetParam();
+        ALOGV("** Starting test %s (%d x %d, %d, 0x%x)",
+                test_info->name(),
+                params.width, params.height,
+                params.maxLockedBuffers, params.format);
+        mCC = new CpuConsumer(params.maxLockedBuffers);
+        String8 name("CpuConsumer_Under_Test");
+        mCC->setName(name);
+        mSTC = new SurfaceTextureClient(mCC->getProducerInterface());
+        mANW = mSTC;
+    }
+
+    virtual void TearDown() {
+        mANW.clear();
+        mSTC.clear();
+        mCC.clear();
+    }
+
+    class FrameWaiter : public CpuConsumer::FrameAvailableListener {
+    public:
+        FrameWaiter():
+                mPendingFrames(0) {
+        }
+
+        void waitForFrame() {
+            Mutex::Autolock lock(mMutex);
+            while (mPendingFrames == 0) {
+                mCondition.wait(mMutex);
+            }
+            mPendingFrames--;
+        }
+
+        virtual void onFrameAvailable() {
+            Mutex::Autolock lock(mMutex);
+            mPendingFrames++;
+            mCondition.signal();
+        }
+
+        int mPendingFrames;
+        Mutex mMutex;
+        Condition mCondition;
+    };
+
+    // Note that SurfaceTexture will lose the notifications
+    // onBuffersReleased and onFrameAvailable as there is currently
+    // no way to forward the events.  This DisconnectWaiter will not let the
+    // disconnect finish until finishDisconnect() is called.  It will
+    // also block until a disconnect is called
+    class DisconnectWaiter : public BufferQueue::ConsumerListener {
+    public:
+        DisconnectWaiter () :
+            mWaitForDisconnect(false),
+            mPendingFrames(0) {
+        }
+
+        void waitForFrame() {
+            Mutex::Autolock lock(mMutex);
+            while (mPendingFrames == 0) {
+                mFrameCondition.wait(mMutex);
+            }
+            mPendingFrames--;
+        }
+
+        virtual void onFrameAvailable() {
+            Mutex::Autolock lock(mMutex);
+            mPendingFrames++;
+            mFrameCondition.signal();
+        }
+
+        virtual void onBuffersReleased() {
+            Mutex::Autolock lock(mMutex);
+            while (!mWaitForDisconnect) {
+                mDisconnectCondition.wait(mMutex);
+            }
+        }
+
+        void finishDisconnect() {
+            Mutex::Autolock lock(mMutex);
+            mWaitForDisconnect = true;
+            mDisconnectCondition.signal();
+        }
+
+    private:
+        Mutex mMutex;
+
+        bool mWaitForDisconnect;
+        Condition mDisconnectCondition;
+
+        int mPendingFrames;
+        Condition mFrameCondition;
+    };
+
+    sp<CpuConsumer> mCC;
+    sp<SurfaceTextureClient> mSTC;
+    sp<ANativeWindow> mANW;
+};
+
+#define ASSERT_NO_ERROR(err, msg) \
+    ASSERT_EQ(NO_ERROR, err) << msg << strerror(-err)
+
+void checkPixel(const CpuConsumer::LockedBuffer &buf,
+        uint32_t x, uint32_t y, uint32_t r, uint32_t g, uint32_t b) {
+    // Ignores components that don't exist for given pixel
+    switch(buf.format) {
+        case HAL_PIXEL_FORMAT_RAW_SENSOR: {
+            String8 msg;
+            uint16_t *bPtr = (uint16_t*)buf.data;
+            bPtr += y * buf.stride + x;
+            // GRBG Bayer mosaic; only check the matching channel
+            switch( ((y & 1) << 1) | (x & 1) ) {
+                case 0: // G
+                case 3: // G
+                    EXPECT_EQ(g, *bPtr);
+                    break;
+                case 1: // R
+                    EXPECT_EQ(r, *bPtr);
+                    break;
+                case 2: // B
+                    EXPECT_EQ(b, *bPtr);
+                    break;
+            }
+            break;
+        }
+        default: {
+            ADD_FAILURE() << "Unknown format for check:" << buf.format;
+            break;
+        }
+    }
+}
+
+// Fill a YV12 buffer with a multi-colored checkerboard pattern
+void fillYV12Buffer(uint8_t* buf, int w, int h, int stride);
+
+// Fill a RAW sensor buffer with a multi-colored checkerboard pattern.
+// Assumes GRBG mosaic ordering. Result should be a grid in a 2x2 pattern
+// of [ R, B; G, W]
+void fillBayerRawBuffer(uint8_t* buf, int w, int h, int stride) {
+    ALOGVV("fillBayerRawBuffer: %p with %d x %d, stride %d", buf, w, h ,stride);
+    // Blocks need to be even-width/height, aim for 8-wide otherwise
+    const int blockWidth = (w > 16 ? w / 8 : 2) & ~0x1;
+    const int blockHeight = (h > 16 ? h / 8 : 2) & ~0x1;
+    for (int y = 0; y < h; y+=2) {
+        uint16_t *bPtr1 = ((uint16_t*)buf) + stride*y;
+        uint16_t *bPtr2 = bPtr1 + stride;
+        for (int x = 0; x < w; x+=2) {
+            int blockX = (x / blockWidth ) & 1;
+            int blockY = (y / blockHeight) & 1;
+            unsigned short r = (blockX == blockY) ? 1000 : 200;
+            unsigned short g = blockY ? 1000: 200;
+            unsigned short b = blockX ? 1000: 200;
+            // GR row
+            *bPtr1++ = g;
+            *bPtr1++ = r;
+            // BG row
+            *bPtr2++ = b;
+            *bPtr2++ = g;
+        }
+    }
+
+}
+
+void checkBayerRawBuffer(const CpuConsumer::LockedBuffer &buf) {
+    uint32_t w = buf.width;
+    uint32_t h = buf.height;
+    const int blockWidth = (w > 16 ? w / 8 : 2) & ~0x1;
+    const int blockHeight = (h > 16 ? h / 8 : 2) & ~0x1;
+    const int blockRows = h / blockHeight;
+    const int blockCols = w / blockWidth;
+
+    // Top-left square is red
+    checkPixel(buf, 0, 0, 1000, 200, 200);
+    checkPixel(buf, 1, 0, 1000, 200, 200);
+    checkPixel(buf, 0, 1, 1000, 200, 200);
+    checkPixel(buf, 1, 1, 1000, 200, 200);
+
+    // One-right square is blue
+    checkPixel(buf, blockWidth,     0, 200, 200, 1000);
+    checkPixel(buf, blockWidth + 1, 0, 200, 200, 1000);
+    checkPixel(buf, blockWidth,     1, 200, 200, 1000);
+    checkPixel(buf, blockWidth + 1, 1, 200, 200, 1000);
+
+    // One-down square is green
+    checkPixel(buf, 0, blockHeight, 200, 1000, 200);
+    checkPixel(buf, 1, blockHeight, 200, 1000, 200);
+    checkPixel(buf, 0, blockHeight + 1, 200, 1000, 200);
+    checkPixel(buf, 1, blockHeight + 1, 200, 1000, 200);
+
+    // One-diag square is white
+    checkPixel(buf, blockWidth,     blockHeight, 1000, 1000, 1000);
+    checkPixel(buf, blockWidth + 1, blockHeight, 1000, 1000, 1000);
+    checkPixel(buf, blockWidth,     blockHeight + 1, 1000, 1000, 1000);
+    checkPixel(buf, blockWidth + 1, blockHeight + 1, 1000, 1000, 1000);
+
+    // Test bottom-right pixel
+    const int maxBlockX = ((w-1) / blockWidth) & 0x1;
+    const int maxBlockY = ((w-1) / blockHeight) & 0x1;
+    unsigned short maxR = (maxBlockX == maxBlockY) ? 1000 : 200;
+    unsigned short maxG = maxBlockY ? 1000: 200;
+    unsigned short maxB = maxBlockX ? 1000: 200;
+    checkPixel(buf, w-1, h-1, maxR, maxG, maxB);
+}
+
+void fillYV12BufferRect(uint8_t* buf, int w, int h, int stride,
+        const android_native_rect_t& rect);
+
+void fillRGBA8Buffer(uint8_t* buf, int w, int h, int stride);
+
+void fillRGBA8BufferSolid(uint8_t* buf, int w, int h, int stride, uint8_t r,
+        uint8_t g, uint8_t b, uint8_t a);
+
+// Configures the ANativeWindow producer-side interface based on test parameters
+void configureANW(const sp<ANativeWindow>& anw,
+        const CpuConsumerTestParams& params,
+        int maxBufferSlack) {
+    status_t err;
+    err = native_window_set_buffers_geometry(anw.get(),
+            params.width, params.height, params.format);
+    ASSERT_NO_ERROR(err, "set_buffers_geometry error: ");
+
+    err = native_window_set_usage(anw.get(),
+            GRALLOC_USAGE_SW_WRITE_OFTEN);
+    ASSERT_NO_ERROR(err, "set_usage error: ");
+
+    int minUndequeuedBuffers;
+    err = anw.get()->query(anw.get(),
+            NATIVE_WINDOW_MIN_UNDEQUEUED_BUFFERS,
+            &minUndequeuedBuffers);
+    ASSERT_NO_ERROR(err, "query error: ");
+
+    ALOGVV("Setting buffer count to %d",
+            maxBufferSlack + 1 + minUndequeuedBuffers);
+    err = native_window_set_buffer_count(anw.get(),
+            maxBufferSlack + 1 + minUndequeuedBuffers);
+    ASSERT_NO_ERROR(err, "set_buffer_count error: ");
+
+}
+
+// Produce one frame of image data; assumes format and resolution configuration
+// is already done.
+void produceOneFrame(const sp<ANativeWindow>& anw,
+        const CpuConsumerTestParams& params,
+        int64_t timestamp, uint32_t *stride) {
+    status_t err;
+    ANativeWindowBuffer* anb;
+    ALOGVV("Dequeue buffer from %p", anw.get());
+    err = native_window_dequeue_buffer_and_wait(anw.get(), &anb);
+    ASSERT_NO_ERROR(err, "dequeueBuffer error: ");
+
+    ASSERT_TRUE(anb != NULL);
+
+    sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
+
+    *stride = buf->getStride();
+    uint8_t* img = NULL;
+
+    ALOGVV("Lock buffer from %p for write", anw.get());
+    err = buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
+    ASSERT_NO_ERROR(err, "lock error: ");
+
+    switch (params.format) {
+        case HAL_PIXEL_FORMAT_YV12:
+            fillYV12Buffer(img, params.width, params.height, *stride);
+            break;
+        case HAL_PIXEL_FORMAT_RAW_SENSOR:
+            fillBayerRawBuffer(img, params.width, params.height, buf->getStride());
+            break;
+        default:
+            FAIL() << "Unknown pixel format under test!";
+            break;
+    }
+    ALOGVV("Unlock buffer from %p", anw.get());
+    err = buf->unlock();
+    ASSERT_NO_ERROR(err, "unlock error: ");
+
+    ALOGVV("Set timestamp to %p", anw.get());
+    err = native_window_set_buffers_timestamp(anw.get(), timestamp);
+    ASSERT_NO_ERROR(err, "set_buffers_timestamp error: ");
+
+    ALOGVV("Queue buffer to %p", anw.get());
+    err = anw->queueBuffer(anw.get(), buf->getNativeBuffer(), -1);
+    ASSERT_NO_ERROR(err, "queueBuffer error:");
+};
+
+TEST_P(CpuConsumerTest, FromCpuSingle) {
+    status_t err;
+    CpuConsumerTestParams params = GetParam();
+
+    // Set up
+
+    ASSERT_NO_FATAL_FAILURE(configureANW(mANW, params, 1));
+
+    // Produce
+
+    const int64_t time = 12345678L;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(produceOneFrame(mANW, params, time,
+                    &stride));
+
+    // Consume
+
+    CpuConsumer::LockedBuffer b;
+    err = mCC->lockNextBuffer(&b);
+    ASSERT_NO_ERROR(err, "getNextBuffer error: ");
+
+    ASSERT_TRUE(b.data != NULL);
+    EXPECT_EQ(params.width,  b.width);
+    EXPECT_EQ(params.height, b.height);
+    EXPECT_EQ(params.format, b.format);
+    EXPECT_EQ(stride, b.stride);
+    EXPECT_EQ(time, b.timestamp);
+
+    checkBayerRawBuffer(b);
+    mCC->unlockBuffer(b);
+}
+
+TEST_P(CpuConsumerTest, FromCpuManyInQueue) {
+    status_t err;
+    CpuConsumerTestParams params = GetParam();
+
+    const int numInQueue = 5;
+    // Set up
+
+    ASSERT_NO_FATAL_FAILURE(configureANW(mANW, params, numInQueue));
+
+    // Produce
+
+    const int64_t time[numInQueue] = { 1L, 2L, 3L, 4L, 5L};
+    uint32_t stride[numInQueue];
+
+    for (int i = 0; i < numInQueue; i++) {
+        ALOGV("Producing frame %d", i);
+        ASSERT_NO_FATAL_FAILURE(produceOneFrame(mANW, params, time[i],
+                        &stride[i]));
+    }
+
+    // Consume
+
+    for (int i = 0; i < numInQueue; i++) {
+        ALOGV("Consuming frame %d", i);
+        CpuConsumer::LockedBuffer b;
+        err = mCC->lockNextBuffer(&b);
+        ASSERT_NO_ERROR(err, "getNextBuffer error: ");
+
+        ASSERT_TRUE(b.data != NULL);
+        EXPECT_EQ(params.width,  b.width);
+        EXPECT_EQ(params.height, b.height);
+        EXPECT_EQ(params.format, b.format);
+        EXPECT_EQ(stride[i], b.stride);
+        EXPECT_EQ(time[i], b.timestamp);
+
+        checkBayerRawBuffer(b);
+
+        mCC->unlockBuffer(b);
+    }
+}
+
+TEST_P(CpuConsumerTest, FromCpuLockMax) {
+    status_t err;
+    CpuConsumerTestParams params = GetParam();
+
+    // Set up
+
+    ASSERT_NO_FATAL_FAILURE(configureANW(mANW, params, params.maxLockedBuffers + 1));
+
+    // Produce
+
+    const int64_t time = 1234L;
+    uint32_t stride;
+
+    for (int i = 0; i < params.maxLockedBuffers + 1; i++) {
+        ALOGV("Producing frame %d", i);
+        ASSERT_NO_FATAL_FAILURE(produceOneFrame(mANW, params, time,
+                        &stride));
+    }
+
+    // Consume
+
+    CpuConsumer::LockedBuffer *b = new CpuConsumer::LockedBuffer[params.maxLockedBuffers];
+    for (int i = 0; i < params.maxLockedBuffers; i++) {
+        ALOGV("Locking frame %d", i);
+        err = mCC->lockNextBuffer(&b[i]);
+        ASSERT_NO_ERROR(err, "getNextBuffer error: ");
+
+        ASSERT_TRUE(b[i].data != NULL);
+        EXPECT_EQ(params.width,  b[i].width);
+        EXPECT_EQ(params.height, b[i].height);
+        EXPECT_EQ(params.format, b[i].format);
+        EXPECT_EQ(stride, b[i].stride);
+        EXPECT_EQ(time, b[i].timestamp);
+
+        checkBayerRawBuffer(b[i]);
+    }
+
+    ALOGV("Locking frame %d (too many)", params.maxLockedBuffers);
+    CpuConsumer::LockedBuffer bTooMuch;
+    err = mCC->lockNextBuffer(&bTooMuch);
+    ASSERT_TRUE(err == INVALID_OPERATION) << "Allowing too many locks";
+
+    ALOGV("Unlocking frame 0");
+    err = mCC->unlockBuffer(b[0]);
+    ASSERT_NO_ERROR(err, "Could not unlock buffer 0: ");
+
+    ALOGV("Locking frame %d (should work now)", params.maxLockedBuffers);
+    err = mCC->lockNextBuffer(&bTooMuch);
+    ASSERT_NO_ERROR(err, "Did not allow new lock after unlock");
+
+    ASSERT_TRUE(bTooMuch.data != NULL);
+    EXPECT_EQ(params.width,  bTooMuch.width);
+    EXPECT_EQ(params.height, bTooMuch.height);
+    EXPECT_EQ(params.format, bTooMuch.format);
+    EXPECT_EQ(stride, bTooMuch.stride);
+    EXPECT_EQ(time, bTooMuch.timestamp);
+
+    checkBayerRawBuffer(bTooMuch);
+
+    ALOGV("Unlocking extra buffer");
+    err = mCC->unlockBuffer(bTooMuch);
+    ASSERT_NO_ERROR(err, "Could not unlock extra buffer: ");
+
+    ALOGV("Locking frame %d (no more available)", params.maxLockedBuffers + 1);
+    err = mCC->lockNextBuffer(&b[0]);
+    ASSERT_EQ(BAD_VALUE, err) << "Not out of buffers somehow";
+
+    for (int i = 1; i < params.maxLockedBuffers; i++) {
+        mCC->unlockBuffer(b[i]);
+    }
+
+    delete[] b;
+
+}
+
+CpuConsumerTestParams rawTestSets[] = {
+    { 512,   512, 1, HAL_PIXEL_FORMAT_RAW_SENSOR},
+    { 512,   512, 3, HAL_PIXEL_FORMAT_RAW_SENSOR},
+    { 2608, 1960, 1, HAL_PIXEL_FORMAT_RAW_SENSOR},
+    { 2608, 1960, 3, HAL_PIXEL_FORMAT_RAW_SENSOR},
+    { 100,   100, 1, HAL_PIXEL_FORMAT_RAW_SENSOR},
+    { 100,   100, 3, HAL_PIXEL_FORMAT_RAW_SENSOR}
+};
+
+INSTANTIATE_TEST_CASE_P(RawTests,
+        CpuConsumerTest,
+        ::testing::ValuesIn(rawTestSets));
+
+} // namespace android
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index 7d8dd33..59b9efd 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -180,129 +180,129 @@
 
 TEST_F(SurfaceTextureClientTest, DefaultGeometryValues) {
     ANativeWindowBuffer* buf;
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(1, buf->width);
     EXPECT_EQ(1, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGBA_8888, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, BufferGeometryCanBeSet) {
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 16, 8, PIXEL_FORMAT_RGB_565));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(16, buf->width);
     EXPECT_EQ(8, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGB_565, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, BufferGeometryDefaultSizeSetFormat) {
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 0, 0, PIXEL_FORMAT_RGB_565));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(1, buf->width);
     EXPECT_EQ(1, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGB_565, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, BufferGeometrySetSizeDefaultFormat) {
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 16, 8, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(16, buf->width);
     EXPECT_EQ(8, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGBA_8888, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, BufferGeometrySizeCanBeUnset) {
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 16, 8, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(16, buf->width);
     EXPECT_EQ(8, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGBA_8888, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 0, 0, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(1, buf->width);
     EXPECT_EQ(1, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGBA_8888, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, BufferGeometrySizeCanBeChangedWithoutFormat) {
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 0, 0, PIXEL_FORMAT_RGB_565));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(1, buf->width);
     EXPECT_EQ(1, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGB_565, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 16, 8, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(16, buf->width);
     EXPECT_EQ(8, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGB_565, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSetDefaultSize) {
     sp<SurfaceTexture> st(mST);
     ANativeWindowBuffer* buf;
     EXPECT_EQ(OK, st->setDefaultBufferSize(16, 8));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
     EXPECT_EQ(16, buf->width);
     EXPECT_EQ(8, buf->height);
     EXPECT_EQ(PIXEL_FORMAT_RGBA_8888, buf->format);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf, -1));
 }
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSetDefaultSizeAfterDequeue) {
     ANativeWindowBuffer* buf[2];
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
     EXPECT_NE(buf[0], buf[1]);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1], -1));
     EXPECT_EQ(OK, mST->setDefaultBufferSize(16, 8));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_EQ(16, buf[0]->width);
     EXPECT_EQ(16, buf[1]->width);
     EXPECT_EQ(8, buf[0]->height);
     EXPECT_EQ(8, buf[1]->height);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1], -1));
 }
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureSetDefaultSizeVsGeometry) {
     ANativeWindowBuffer* buf[2];
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
     EXPECT_EQ(OK, mST->setDefaultBufferSize(16, 8));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_EQ(16, buf[0]->width);
     EXPECT_EQ(16, buf[1]->width);
     EXPECT_EQ(8, buf[0]->height);
     EXPECT_EQ(8, buf[1]->height);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1], -1));
     EXPECT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 12, 24, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_EQ(12, buf[0]->width);
     EXPECT_EQ(12, buf[1]->width);
     EXPECT_EQ(24, buf[0]->height);
     EXPECT_EQ(24, buf[1]->height);
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[1], -1));
 }
 
 TEST_F(SurfaceTextureClientTest, SurfaceTextureTooManyUpdateTexImage) {
@@ -310,18 +310,18 @@
     ASSERT_EQ(OK, mST->setSynchronousMode(false));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(OK, mST->updateTexImage());
 
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
 
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(OK, mST->updateTexImage());
@@ -332,15 +332,15 @@
     android_native_buffer_t* buf[3];
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_NE(buf[1], buf[2]);
     EXPECT_NE(buf[2], buf[0]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[0]);
     EXPECT_EQ(OK, mST->updateTexImage());
@@ -353,19 +353,19 @@
     android_native_buffer_t* buf[3];
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_NE(buf[1], buf[2]);
     EXPECT_NE(buf[2], buf[0]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[0]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[1]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[2]);
 }
@@ -375,20 +375,20 @@
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[0]);
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
     EXPECT_NE(buf[0], buf[1]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[1]);
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
     EXPECT_NE(buf[1], buf[2]);
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2], -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[2]);
 }
@@ -400,16 +400,16 @@
     android_native_buffer_t* firstBuf;
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &firstBuf));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), firstBuf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &firstBuf));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), firstBuf, -1));
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), firstBuf);
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2], -1));
     EXPECT_NE(buf[0], buf[1]);
     EXPECT_NE(buf[1], buf[2]);
     EXPECT_NE(buf[2], buf[0]);
@@ -422,24 +422,24 @@
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
 
     // We should be able to dequeue all the buffers before we've queued mANWy.
-    EXPECT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    EXPECT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    EXPECT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
+    EXPECT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    EXPECT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    EXPECT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
 
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[2]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[2], -1));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
 
     EXPECT_EQ(OK, mST->updateTexImage());
     EXPECT_EQ(mST->getCurrentBuffer().get(), buf[1]);
 
-    EXPECT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
+    EXPECT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
 
     // Once we've queued a buffer, however we should not be able to dequeue more
     // than (buffer-count - MIN_UNDEQUEUED_BUFFERS), which is 2 in this case.
-    EXPECT_EQ(-EBUSY, mANW->dequeueBuffer(mANW.get(), &buf[1]));
+    EXPECT_EQ(-EBUSY, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
 
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0]));
-    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[0], -1));
+    ASSERT_EQ(OK, mANW->cancelBuffer(mANW.get(), buf[2], -1));
 }
 
 TEST_F(SurfaceTextureClientTest, SetCropCropsCrop) {
@@ -449,8 +449,8 @@
     ASSERT_EQ(OK, native_window_set_buffers_dimensions(mANW.get(), 4, 4));
 
     android_native_buffer_t* buf;
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf, -1));
     ASSERT_EQ(OK, mST->updateTexImage());
 
     Rect crop = mST->getCurrentCrop();
@@ -500,20 +500,20 @@
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 3));
     // dequeue/queue/update so we have a current buffer
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     mST->updateTexImage();
 
     MyThread* thread = new MyThread(mST);
     sp<Thread> threadBase(thread);
 
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     thread->run();
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[1]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1]));
-    //ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[2]));
-    //ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[1]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[1], -1));
+    //ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[2]));
+    //ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[2], -1));
     thread->bufferDequeued();
     thread->requestExitAndWait();
 }
@@ -522,8 +522,8 @@
     android_native_buffer_t* buf[3];
     float mtx[16] = {};
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     ASSERT_EQ(OK, mST->updateTexImage());
     mST->getTransformMatrix(mtx);
 
@@ -552,8 +552,8 @@
     android_native_buffer_t* buf[3];
     float mtx[16] = {};
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     ASSERT_EQ(OK, mST->updateTexImage());
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 6)); // frees buffers
     mST->getTransformMatrix(mtx);
@@ -590,9 +590,9 @@
 
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 4));
     ASSERT_EQ(OK, native_window_set_buffers_geometry(mANW.get(), 8, 8, 0));
-    ASSERT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &buf[0]));
+    ASSERT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &buf[0]));
     ASSERT_EQ(OK, native_window_set_crop(mANW.get(), &crop));
-    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0]));
+    ASSERT_EQ(OK, mANW->queueBuffer(mANW.get(), buf[0], -1));
     ASSERT_EQ(OK, mST->updateTexImage());
     ASSERT_EQ(OK, native_window_set_buffer_count(mANW.get(), 6)); // frees buffers
     mST->getTransformMatrix(mtx);
diff --git a/libs/gui/tests/SurfaceTexture_test.cpp b/libs/gui/tests/SurfaceTexture_test.cpp
index 078c17b..04f4b55 100644
--- a/libs/gui/tests/SurfaceTexture_test.cpp
+++ b/libs/gui/tests/SurfaceTexture_test.cpp
@@ -83,7 +83,7 @@
             ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
 
             mSurfaceControl = mComposerClient->createSurface(
-                    String8("Test Surface"), 0,
+                    String8("Test Surface"),
                     getSurfaceWidth(), getSurfaceHeight(),
                     PIXEL_FORMAT_RGB_888, 0);
 
@@ -672,18 +672,19 @@
 // Calls to this function should be wrapped in an ASSERT_NO_FATAL_FAILURE().
 void produceOneRGBA8Frame(const sp<ANativeWindow>& anw) {
     android_native_buffer_t* anb;
-    ASSERT_EQ(NO_ERROR, anw->dequeueBuffer(anw.get(), &anb));
+    ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(anw.get(),
+            &anb));
     ASSERT_TRUE(anb != NULL);
 
     sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-    ASSERT_EQ(NO_ERROR, anw->lockBuffer(anw.get(), buf->getNativeBuffer()));
 
     uint8_t* img = NULL;
     ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,
             (void**)(&img)));
     fillRGBA8Buffer(img, buf->getWidth(), buf->getHeight(), buf->getStride());
     ASSERT_EQ(NO_ERROR, buf->unlock());
-    ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf->getNativeBuffer()));
+    ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf->getNativeBuffer(),
+            -1));
 }
 
 TEST_F(SurfaceTextureGLTest, TexturingFromCpuFilledYV12BufferNpot) {
@@ -696,18 +697,19 @@
             GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN));
 
     ANativeWindowBuffer* anb;
-    ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     ASSERT_TRUE(anb != NULL);
 
     sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-    ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(), buf->getNativeBuffer()));
 
     // Fill the buffer with the a checkerboard pattern
     uint8_t* img = NULL;
     buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
     fillYV12Buffer(img, texWidth, texHeight, buf->getStride());
     buf->unlock();
-    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer()));
+    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer(),
+            -1));
 
     mST->updateTexImage();
 
@@ -741,18 +743,19 @@
             GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN));
 
     ANativeWindowBuffer* anb;
-    ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     ASSERT_TRUE(anb != NULL);
 
     sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-    ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(), buf->getNativeBuffer()));
 
     // Fill the buffer with the a checkerboard pattern
     uint8_t* img = NULL;
     buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
     fillYV12Buffer(img, texWidth, texHeight, buf->getStride());
     buf->unlock();
-    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer()));
+    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer(),
+            -1));
 
     mST->updateTexImage();
 
@@ -801,19 +804,18 @@
         ASSERT_EQ(NO_ERROR, native_window_set_crop(mANW.get(), &crop));
 
         ANativeWindowBuffer* anb;
-        ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+        ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+                &anb));
         ASSERT_TRUE(anb != NULL);
 
         sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-        ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(),
-                buf->getNativeBuffer()));
 
         uint8_t* img = NULL;
         buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img));
         fillYV12BufferRect(img, texWidth, texHeight, buf->getStride(), crop);
         buf->unlock();
         ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(),
-                buf->getNativeBuffer()));
+                buf->getNativeBuffer(), -1));
 
         mST->updateTexImage();
 
@@ -877,7 +879,8 @@
         virtual bool threadLoop() {
             for (int i = 0; i < numFrames; i++) {
                 ANativeWindowBuffer* anb;
-                if (mANW->dequeueBuffer(mANW.get(), &anb) != NO_ERROR) {
+                if (native_window_dequeue_buffer_and_wait(mANW.get(),
+                        &anb) != NO_ERROR) {
                     return false;
                 }
                 if (anb == NULL) {
@@ -885,10 +888,6 @@
                 }
 
                 sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-                if (mANW->lockBuffer(mANW.get(), buf->getNativeBuffer())
-                        != NO_ERROR) {
-                    return false;
-                }
 
                 const int yuvTexOffsetY = 0;
                 int stride = buf->getStride();
@@ -932,7 +931,7 @@
                 }
 
                 buf->unlock();
-                if (mANW->queueBuffer(mANW.get(), buf->getNativeBuffer())
+                if (mANW->queueBuffer(mANW.get(), buf->getNativeBuffer(), -1)
                         != NO_ERROR) {
                     return false;
                 }
@@ -1093,13 +1092,14 @@
 
             for (int numFrames =0 ; numFrames < 2; numFrames ++) {
 
-                if (mANW->dequeueBuffer(mANW.get(), &anb) != NO_ERROR) {
+                if (native_window_dequeue_buffer_and_wait(mANW.get(),
+                        &anb) != NO_ERROR) {
                     return false;
                 }
                 if (anb == NULL) {
                     return false;
                 }
-                if (mANW->queueBuffer(mANW.get(), anb)
+                if (mANW->queueBuffer(mANW.get(), anb, -1)
                         != NO_ERROR) {
                     return false;
                 }
@@ -1147,11 +1147,11 @@
 
     ANativeWindowBuffer *anb;
 
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
 
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
 
     EXPECT_EQ(OK,mST->updateTexImage());
     EXPECT_EQ(OK,mST->updateTexImage());
@@ -1163,8 +1163,8 @@
 
     ASSERT_EQ(OK, mST->setSynchronousMode(true));
 
-    EXPECT_EQ(OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ(OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
 
     // Will fail here if mCurrentTexture is not cleared properly
     mFW->waitForFrame();
@@ -1193,8 +1193,8 @@
 
     android_native_rect_t odd = {23, 78, 123, 477};
     ASSERT_EQ(OK, native_window_set_crop(mANW.get(), &odd));
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
     mFW->waitForFrame();
     EXPECT_EQ(OK,mST->updateTexImage());
     Rect r = mST->getCurrentCrop();
@@ -1227,8 +1227,8 @@
     // The crop is in the shape of (320, 180) === 16 x 9
     android_native_rect_t standard = {10, 20, 330, 200};
     ASSERT_EQ(OK, native_window_set_crop(mANW.get(), &standard));
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
     mFW->waitForFrame();
     EXPECT_EQ(OK,mST->updateTexImage());
     Rect r = mST->getCurrentCrop();
@@ -1238,8 +1238,8 @@
     // make this wider then desired aspect 239 x 100 (2.39:1)
     android_native_rect_t wide = {20, 30, 259, 130};
     ASSERT_EQ(OK, native_window_set_crop(mANW.get(), &wide));
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
     mFW->waitForFrame();
     EXPECT_EQ(OK,mST->updateTexImage());
     r = mST->getCurrentCrop();
@@ -1250,8 +1250,8 @@
     // This image is taller then desired aspect 400 x 300 (4:3)
     android_native_rect_t narrow = {0, 0, 400, 300};
     ASSERT_EQ(OK, native_window_set_crop(mANW.get(), &narrow));
-    EXPECT_EQ (OK, mANW->dequeueBuffer(mANW.get(), &anb));
-    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ (OK, native_window_dequeue_buffer_and_wait(mANW.get(), &anb));
+    EXPECT_EQ(OK, mANW->queueBuffer(mANW.get(), anb, -1));
     mFW->waitForFrame();
     EXPECT_EQ(OK,mST->updateTexImage());
     r = mST->getCurrentCrop();
@@ -1278,31 +1278,34 @@
             ANativeWindowBuffer* anb;
 
             // Frame 1
-            if (mANW->dequeueBuffer(mANW.get(), &anb) != NO_ERROR) {
+            if (native_window_dequeue_buffer_and_wait(mANW.get(),
+                    &anb) != NO_ERROR) {
                 return false;
             }
             if (anb == NULL) {
                 return false;
             }
-            if (mANW->queueBuffer(mANW.get(), anb)
+            if (mANW->queueBuffer(mANW.get(), anb, -1)
                     != NO_ERROR) {
                 return false;
             }
 
             // Frame 2
-            if (mANW->dequeueBuffer(mANW.get(), &anb) != NO_ERROR) {
+            if (native_window_dequeue_buffer_and_wait(mANW.get(),
+                    &anb) != NO_ERROR) {
                 return false;
             }
             if (anb == NULL) {
                 return false;
             }
-            if (mANW->queueBuffer(mANW.get(), anb)
+            if (mANW->queueBuffer(mANW.get(), anb, -1)
                     != NO_ERROR) {
                 return false;
             }
 
             // Frame 3 - error expected
-            mDequeueError = mANW->dequeueBuffer(mANW.get(), &anb);
+            mDequeueError = native_window_dequeue_buffer_and_wait(mANW.get(),
+                &anb);
             return false;
         }
 
@@ -1346,26 +1349,29 @@
 
     // make sure it works with small textures
     mST->setDefaultBufferSize(16, texHeight);
-    EXPECT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    EXPECT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     EXPECT_EQ(16, anb->width);
     EXPECT_EQ(texHeight, anb->height);
-    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb, -1));
     EXPECT_EQ(NO_ERROR, mST->updateTexImage());
 
     // make sure it works with GL_MAX_TEXTURE_SIZE
     mST->setDefaultBufferSize(maxTextureSize, texHeight);
-    EXPECT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    EXPECT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     EXPECT_EQ(maxTextureSize, anb->width);
     EXPECT_EQ(texHeight, anb->height);
-    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb, -1));
     EXPECT_EQ(NO_ERROR, mST->updateTexImage());
 
     // make sure it fails with GL_MAX_TEXTURE_SIZE+1
     mST->setDefaultBufferSize(maxTextureSize+1, texHeight);
-    EXPECT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    EXPECT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     EXPECT_EQ(maxTextureSize+1, anb->width);
     EXPECT_EQ(texHeight, anb->height);
-    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb));
+    EXPECT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), anb, -1));
     ASSERT_NE(NO_ERROR, mST->updateTexImage());
 }
 
@@ -2134,11 +2140,11 @@
             GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN));
 
     android_native_buffer_t* anb;
-    ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+    ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+            &anb));
     ASSERT_TRUE(anb != NULL);
 
     sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
-    ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(), buf->getNativeBuffer()));
 
     // Fill the buffer with green
     uint8_t* img = NULL;
@@ -2146,7 +2152,8 @@
     fillRGBA8BufferSolid(img, texWidth, texHeight, buf->getStride(), 0, 255,
             0, 255);
     buf->unlock();
-    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer()));
+    ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(), buf->getNativeBuffer(),
+            -1));
 
     ASSERT_EQ(NO_ERROR, mST->updateTexImage());
 
@@ -2157,12 +2164,11 @@
     for (int i = 0; i < 4; i++) {
         SCOPED_TRACE(String8::format("frame %d", i).string());
 
-        ASSERT_EQ(NO_ERROR, mANW->dequeueBuffer(mANW.get(), &anb));
+        ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(mANW.get(),
+                &anb));
         ASSERT_TRUE(anb != NULL);
 
         buf = new GraphicBuffer(anb, false);
-        ASSERT_EQ(NO_ERROR, mANW->lockBuffer(mANW.get(),
-                buf->getNativeBuffer()));
 
         // Fill the buffer with red
         ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,
@@ -2171,7 +2177,7 @@
                 0, 255);
         ASSERT_EQ(NO_ERROR, buf->unlock());
         ASSERT_EQ(NO_ERROR, mANW->queueBuffer(mANW.get(),
-                buf->getNativeBuffer()));
+                buf->getNativeBuffer(), -1));
 
         ASSERT_EQ(NO_ERROR, mST->updateTexImage());
 
diff --git a/libs/gui/tests/Surface_test.cpp b/libs/gui/tests/Surface_test.cpp
index b585d68..545b547 100644
--- a/libs/gui/tests/Surface_test.cpp
+++ b/libs/gui/tests/Surface_test.cpp
@@ -33,7 +33,7 @@
         ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
 
         mSurfaceControl = mComposerClient->createSurface(
-                String8("Test Surface"), 0, 32, 32, PIXEL_FORMAT_RGBA_8888, 0);
+                String8("Test Surface"), 32, 32, PIXEL_FORMAT_RGBA_8888, 0);
 
         ASSERT_TRUE(mSurfaceControl != NULL);
         ASSERT_TRUE(mSurfaceControl->isValid());
@@ -85,7 +85,8 @@
     uint32_t w=0, h=0;
     PixelFormat fmt=0;
     sp<ISurfaceComposer> sf(ComposerService::getComposerService());
-    ASSERT_EQ(NO_ERROR, sf->captureScreen(0, &heap, &w, &h, &fmt, 64, 64, 0,
+    sp<IBinder> display(sf->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &heap, &w, &h, &fmt, 64, 64, 0,
             0x7fffffff));
     ASSERT_TRUE(heap != NULL);
 
@@ -97,26 +98,27 @@
     ASSERT_EQ(NO_ERROR, native_window_set_buffer_count(anw.get(), 3));
     ANativeWindowBuffer* buf = 0;
 
-    status_t err = anw->dequeueBuffer(anw.get(), &buf);
+    status_t err = native_window_dequeue_buffer_and_wait(anw.get(), &buf);
     if (err) {
         // we could fail if GRALLOC_USAGE_PROTECTED is not supported.
         // that's okay as long as this is the reason for the failure.
         // try again without the GRALLOC_USAGE_PROTECTED bit.
         ASSERT_EQ(NO_ERROR, native_window_set_usage(anw.get(), 0));
-        ASSERT_EQ(NO_ERROR, anw->dequeueBuffer(anw.get(), &buf));
+        ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(anw.get(),
+                &buf));
         return;
     }
-    ASSERT_EQ(NO_ERROR, anw->cancelBuffer(anw.get(), buf));
+    ASSERT_EQ(NO_ERROR, anw->cancelBuffer(anw.get(), buf, -1));
 
     for (int i = 0; i < 4; i++) {
         // Loop to make sure SurfaceFlinger has retired a protected buffer.
-        ASSERT_EQ(NO_ERROR, anw->dequeueBuffer(anw.get(), &buf));
-        ASSERT_EQ(NO_ERROR, anw->lockBuffer(anw.get(), buf));
-        ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf));
+        ASSERT_EQ(NO_ERROR, native_window_dequeue_buffer_and_wait(anw.get(),
+                &buf));
+        ASSERT_EQ(NO_ERROR, anw->queueBuffer(anw.get(), buf, -1));
     }
     heap = 0;
     w = h = fmt = 0;
-    ASSERT_EQ(NO_ERROR, sf->captureScreen(0, &heap, &w, &h, &fmt,
+    ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &heap, &w, &h, &fmt,
             64, 64, 0, 0x7fffffff));
     ASSERT_TRUE(heap != NULL);
 }
diff --git a/libs/ui/Android.mk b/libs/ui/Android.mk
index 5aff7a4..80c28a1 100644
--- a/libs/ui/Android.mk
+++ b/libs/ui/Android.mk
@@ -16,6 +16,7 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
+	Fence.cpp \
 	FramebufferNativeWindow.cpp \
 	GraphicBuffer.cpp \
 	GraphicBufferAllocator.cpp \
@@ -26,8 +27,9 @@
 
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
-	libutils \
-	libhardware
+	libhardware \
+	libsync \
+	libutils
 
 ifneq ($(BOARD_FRAMEBUFFER_FORCE_FORMAT),)
 LOCAL_CFLAGS += -DFRAMEBUFFER_FORCE_FORMAT=$(BOARD_FRAMEBUFFER_FORCE_FORMAT)
diff --git a/libs/ui/Fence.cpp b/libs/ui/Fence.cpp
new file mode 100644
index 0000000..cec5876
--- /dev/null
+++ b/libs/ui/Fence.cpp
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2012 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 "Fence"
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+//#define LOG_NDEBUG 0
+
+#include <sync/sync.h>
+#include <ui/Fence.h>
+#include <unistd.h>
+#include <utils/Log.h>
+#include <utils/Trace.h>
+
+namespace android {
+
+const sp<Fence> Fence::NO_FENCE = sp<Fence>();
+
+Fence::Fence() :
+    mFenceFd(-1) {
+}
+
+Fence::Fence(int fenceFd) :
+    mFenceFd(fenceFd) {
+}
+
+Fence::~Fence() {
+    if (mFenceFd != -1) {
+        close(mFenceFd);
+    }
+}
+
+int Fence::wait(unsigned int timeout) {
+    ATRACE_CALL();
+    if (mFenceFd == -1) {
+        return NO_ERROR;
+    }
+    return sync_wait(mFenceFd, timeout);
+}
+
+sp<Fence> Fence::merge(const String8& name, const sp<Fence>& f1,
+        const sp<Fence>& f2) {
+    ATRACE_CALL();
+    int result = sync_merge(name.string(), f1->mFenceFd, f2->mFenceFd);
+    if (result == -1) {
+        status_t err = -errno;
+        ALOGE("merge: sync_merge(\"%s\", %d, %d) returned an error: %s (%d)",
+                name.string(), f1->mFenceFd, f2->mFenceFd,
+                strerror(-err), err);
+        return NO_FENCE;
+    }
+    return sp<Fence>(new Fence(result));
+}
+
+int Fence::dup() const {
+    if (mFenceFd == -1) {
+        return -1;
+    }
+    return ::dup(mFenceFd);
+}
+
+size_t Fence::getFlattenedSize() const {
+    return 0;
+}
+
+size_t Fence::getFdCount() const {
+    return 1;
+}
+
+status_t Fence::flatten(void* buffer, size_t size, int fds[],
+        size_t count) const {
+    if (size != 0 || count != 1) {
+        return BAD_VALUE;
+    }
+
+    fds[0] = mFenceFd;
+    return NO_ERROR;
+}
+
+status_t Fence::unflatten(void const* buffer, size_t size, int fds[],
+        size_t count) {
+    if (size != 0 || count != 1) {
+        return BAD_VALUE;
+    }
+    if (mFenceFd != -1) {
+        // Don't unflatten if we already have a valid fd.
+        return INVALID_OPERATION;
+    }
+
+    mFenceFd = fds[0];
+    return NO_ERROR;
+}
+
+} // namespace android
diff --git a/libs/ui/FramebufferNativeWindow.cpp b/libs/ui/FramebufferNativeWindow.cpp
index dec99b6..31a69b2 100644
--- a/libs/ui/FramebufferNativeWindow.cpp
+++ b/libs/ui/FramebufferNativeWindow.cpp
@@ -28,6 +28,7 @@
 #include <utils/RefBase.h>
 
 #include <ui/ANativeObjectBase.h>
+#include <ui/Fence.h>
 #include <ui/FramebufferNativeWindow.h>
 #include <ui/Rect.h>
 
@@ -92,8 +93,13 @@
         mUpdateOnDemand = (fbDev->setUpdateRect != 0);
         
         // initialize the buffer FIFO
-        mNumBuffers = NUM_FRAME_BUFFERS;
-        mNumFreeBuffers = NUM_FRAME_BUFFERS;
+        if(fbDev->numFramebuffers >= MIN_NUM_FRAME_BUFFERS &&
+           fbDev->numFramebuffers <= MAX_NUM_FRAME_BUFFERS){
+            mNumBuffers = fbDev->numFramebuffers;
+        } else {
+            mNumBuffers = MIN_NUM_FRAME_BUFFERS;
+        }
+        mNumFreeBuffers = mNumBuffers;
         mBufferHead = mNumBuffers-1;
 
         /*
@@ -145,19 +151,23 @@
 
     ANativeWindow::setSwapInterval = setSwapInterval;
     ANativeWindow::dequeueBuffer = dequeueBuffer;
-    ANativeWindow::lockBuffer = lockBuffer;
     ANativeWindow::queueBuffer = queueBuffer;
     ANativeWindow::query = query;
     ANativeWindow::perform = perform;
+
+    ANativeWindow::dequeueBuffer_DEPRECATED = dequeueBuffer_DEPRECATED;
+    ANativeWindow::lockBuffer_DEPRECATED = lockBuffer_DEPRECATED;
+    ANativeWindow::queueBuffer_DEPRECATED = queueBuffer_DEPRECATED;
 }
 
 FramebufferNativeWindow::~FramebufferNativeWindow() 
 {
     if (grDev) {
-        if (buffers[0] != NULL)
-            grDev->free(grDev, buffers[0]->handle);
-        if (buffers[1] != NULL)
-            grDev->free(grDev, buffers[1]->handle);
+        for(int i = 0; i < mNumBuffers; i++) {
+            if (buffers[i] != NULL) {
+                grDev->free(grDev, buffers[i]->handle);
+            }
+        }
         gralloc_close(grDev);
     }
 
@@ -207,9 +217,24 @@
     return index;
 }
 
-int FramebufferNativeWindow::dequeueBuffer(ANativeWindow* window, 
+int FramebufferNativeWindow::dequeueBuffer_DEPRECATED(ANativeWindow* window, 
         ANativeWindowBuffer** buffer)
 {
+    int fenceFd = -1;
+    int result = dequeueBuffer(window, buffer, &fenceFd);
+    sp<Fence> fence(new Fence(fenceFd));
+    int waitResult = fence->wait(Fence::TIMEOUT_NEVER);
+    if (waitResult != OK) {
+        ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an "
+                "error: %d", waitResult);
+        return waitResult;
+    }
+    return result;
+}
+
+int FramebufferNativeWindow::dequeueBuffer(ANativeWindow* window, 
+        ANativeWindowBuffer** buffer, int* fenceFd)
+{
     FramebufferNativeWindow* self = getSelf(window);
     Mutex::Autolock _l(self->mutex);
     framebuffer_device_t* fb = self->fbDev;
@@ -218,43 +243,45 @@
     if (self->mBufferHead >= self->mNumBuffers)
         self->mBufferHead = 0;
 
-    // wait for a free buffer
-    while (!self->mNumFreeBuffers) {
+    // wait for a free non-front buffer
+    while (self->mNumFreeBuffers < 2) {
         self->mCondition.wait(self->mutex);
     }
+    ALOG_ASSERT(self->buffers[index] != self->front);
+
     // get this buffer
     self->mNumFreeBuffers--;
     self->mCurrentBufferIndex = index;
 
     *buffer = self->buffers[index].get();
+    *fenceFd = -1;
 
     return 0;
 }
 
-int FramebufferNativeWindow::lockBuffer(ANativeWindow* window, 
+int FramebufferNativeWindow::lockBuffer_DEPRECATED(ANativeWindow* window, 
         ANativeWindowBuffer* buffer)
 {
-    FramebufferNativeWindow* self = getSelf(window);
-    Mutex::Autolock _l(self->mutex);
-
-    const int index = self->mCurrentBufferIndex;
-
-    // wait that the buffer we're locking is not front anymore
-    while (self->front == buffer) {
-        self->mCondition.wait(self->mutex);
-    }
-
     return NO_ERROR;
 }
 
-int FramebufferNativeWindow::queueBuffer(ANativeWindow* window, 
+int FramebufferNativeWindow::queueBuffer_DEPRECATED(ANativeWindow* window, 
         ANativeWindowBuffer* buffer)
 {
+    return queueBuffer(window, buffer, -1);
+}
+
+int FramebufferNativeWindow::queueBuffer(ANativeWindow* window, 
+        ANativeWindowBuffer* buffer, int fenceFd)
+{
     FramebufferNativeWindow* self = getSelf(window);
     Mutex::Autolock _l(self->mutex);
     framebuffer_device_t* fb = self->fbDev;
     buffer_handle_t handle = static_cast<NativeBuffer*>(buffer)->handle;
 
+    sp<Fence> fence(new Fence(fenceFd));
+    fence->wait(Fence::TIMEOUT_NEVER);
+
     const int index = self->mCurrentBufferIndex;
     int res = fb->post(fb, handle);
     self->front = static_cast<NativeBuffer*>(buffer);
diff --git a/libs/ui/Region.cpp b/libs/ui/Region.cpp
index 2c7cdf0..a3d8b01 100644
--- a/libs/ui/Region.cpp
+++ b/libs/ui/Region.cpp
@@ -66,12 +66,6 @@
 {
 }
 
-Region::Region(const void* buffer)
-{
-    status_t err = read(buffer);
-    ALOGE_IF(err<0, "error %s reading Region from buffer", strerror(err));
-}
-
 Region::~Region()
 {
 }
@@ -561,55 +555,33 @@
 
 // ----------------------------------------------------------------------------
 
-ssize_t Region::write(void* buffer, size_t size) const
-{
-#if VALIDATE_REGIONS
-    validate(*this, "write(buffer)");
-#endif
-    const size_t count = mStorage.size();
-    const size_t sizeNeeded = sizeof(int32_t) + (1+count)*sizeof(Rect);
-    if (buffer != NULL) {
-        if (sizeNeeded > size) return NO_MEMORY;
-        int32_t* const p = static_cast<int32_t*>(buffer);
-        *p = count;
-        memcpy(p+1, &mBounds, sizeof(Rect));
-        if (count) {
-            memcpy(p+5, mStorage.array(), count*sizeof(Rect));
+size_t Region::getSize() const {
+    return (mStorage.size() + 1) * sizeof(Rect);
+}
+
+status_t Region::flatten(void* buffer) const {
+    Rect* rects = reinterpret_cast<Rect*>(buffer);
+    *rects++ = mBounds;
+    memcpy(rects, mStorage.array(), mStorage.size() * sizeof(Rect));
+    return NO_ERROR;
+}
+
+status_t Region::unflatten(void const* buffer, size_t size) {
+    mStorage.clear();
+    if (size >= sizeof(Rect)) {
+        Rect const* rects = reinterpret_cast<Rect const*>(buffer);
+        mBounds = *rects++;
+        size -= sizeof(Rect);
+        size_t count = size / sizeof(Rect);
+        if (count > 0) {
+            ssize_t err = mStorage.insertAt(0, count);
+            if (err < 0) {
+                return status_t(err);
+            }
+            memcpy(mStorage.editArray(), rects, count*sizeof(Rect));
         }
     }
-    return ssize_t(sizeNeeded);
-}
-
-ssize_t Region::read(const void* buffer)
-{
-    int32_t const* const p = static_cast<int32_t const*>(buffer); 
-    const size_t count = *p;
-    memcpy(&mBounds, p+1, sizeof(Rect));
-    mStorage.clear();
-    if (count) {
-        mStorage.insertAt(0, count);
-        memcpy(mStorage.editArray(), p+5, count*sizeof(Rect));
-    }
-#if VALIDATE_REGIONS
-    validate(*this, "read(buffer)");
-#endif
-    return ssize_t(sizeof(int32_t) + (1+count)*sizeof(Rect));
-}
-
-ssize_t Region::writeEmpty(void* buffer, size_t size)
-{
-    const size_t sizeNeeded = sizeof(int32_t) + sizeof(Rect);
-    if (sizeNeeded > size) return NO_MEMORY;
-    int32_t* const p = static_cast<int32_t*>(buffer); 
-    memset(p, 0, sizeNeeded);
-    return ssize_t(sizeNeeded);
-}
-
-bool Region::isEmpty(void* buffer)
-{
-    int32_t const* const p = static_cast<int32_t const*>(buffer); 
-    Rect const* const b = reinterpret_cast<Rect const *>(p+1);
-    return b->isEmpty();
+    return NO_ERROR;
 }
 
 // ----------------------------------------------------------------------------
diff --git a/libs/utils/Android.mk b/libs/utils/Android.mk
index ddfb83e..c9f8fd4 100644
--- a/libs/utils/Android.mk
+++ b/libs/utils/Android.mk
@@ -26,6 +26,7 @@
 	FileMap.cpp \
 	Flattenable.cpp \
 	LinearTransform.cpp \
+	Log.cpp \
 	PropertyMap.cpp \
 	RefBase.cpp \
 	SharedBuffer.cpp \
diff --git a/libs/utils/LinearTransform.cpp b/libs/utils/LinearTransform.cpp
index d752415..b7d28d4 100644
--- a/libs/utils/LinearTransform.cpp
+++ b/libs/utils/LinearTransform.cpp
@@ -114,6 +114,7 @@
         int64_t  basis1,
         int32_t  N,
         uint32_t D,
+        bool     invert_frac,
         int64_t  basis2,
         int64_t* out) {
     uint64_t scaled, res;
@@ -137,8 +138,8 @@
         is_neg = !is_neg;
 
     if (!scale_u64_to_u64(abs_val,
-                          ABS(N),
-                          D,
+                          invert_frac ? D : ABS(N),
+                          invert_frac ? ABS(N) : D,
                           &scaled,
                           is_neg))
         return false; // overflow/undeflow
@@ -191,6 +192,7 @@
                                        a_zero,
                                        a_to_b_numer,
                                        a_to_b_denom,
+                                       false,
                                        b_zero,
                                        b_out);
 }
@@ -201,8 +203,9 @@
 
     return linear_transform_s64_to_s64(b_in,
                                        b_zero,
-                                       a_to_b_denom,
                                        a_to_b_numer,
+                                       a_to_b_denom,
+                                       true,
                                        a_zero,
                                        a_out);
 }
diff --git a/libs/utils/Log.cpp b/libs/utils/Log.cpp
new file mode 100644
index 0000000..bffb56e
--- /dev/null
+++ b/libs/utils/Log.cpp
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2012 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 "Log"
+
+#include <utils/Log.h>
+#include <utils/Timers.h>
+
+namespace android {
+
+LogIfSlow::LogIfSlow(const char* tag, android_LogPriority priority,
+        int timeoutMillis, const char* message) :
+        mTag(tag), mPriority(priority), mTimeoutMillis(timeoutMillis), mMessage(message),
+        mStart(systemTime(SYSTEM_TIME_BOOTTIME)) {
+}
+
+LogIfSlow::~LogIfSlow() {
+    int durationMillis = nanoseconds_to_milliseconds(systemTime(SYSTEM_TIME_BOOTTIME) - mStart);
+    if (durationMillis > mTimeoutMillis) {
+        LOG_PRI(mPriority, mTag, "%s: %dms", mMessage, durationMillis);
+    }
+}
+
+} // namespace android
diff --git a/libs/utils/SystemClock.cpp b/libs/utils/SystemClock.cpp
index 8b8ac10..53e0626 100644
--- a/libs/utils/SystemClock.cpp
+++ b/libs/utils/SystemClock.cpp
@@ -106,7 +106,22 @@
  */
 int64_t elapsedRealtime()
 {
+	return nanoseconds_to_milliseconds(elapsedRealtimeNano());
+}
+
+/*
+ * native public static long elapsedRealtimeNano();
+ */
+int64_t elapsedRealtimeNano()
+{
 #ifdef HAVE_ANDROID_OS
+    struct timespec ts;
+    int result = clock_gettime(CLOCK_BOOTTIME, &ts);
+    if (result == 0) {
+        return seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec;
+    }
+
+    // CLOCK_BOOTTIME doesn't exist, fallback to /dev/alarm
     static int s_fd = -1;
 
     if (s_fd == -1) {
@@ -114,25 +129,20 @@
         if (android_atomic_cmpxchg(-1, fd, &s_fd)) {
             close(fd);
         }
+        result = ioctl(s_fd,
+                ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), &ts);
     }
 
-    struct timespec ts;
-    int result = ioctl(s_fd,
-            ANDROID_ALARM_GET_TIME(ANDROID_ALARM_ELAPSED_REALTIME), &ts);
-
     if (result == 0) {
-        int64_t when = seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec;
-        return (int64_t) nanoseconds_to_milliseconds(when);
-    } else {
-        // XXX: there was an error, probably because the driver didn't
-        // exist ... this should return
-        // a real error, like an exception!
-        int64_t when = systemTime(SYSTEM_TIME_MONOTONIC);
-        return (int64_t) nanoseconds_to_milliseconds(when);
+        return seconds_to_nanoseconds(ts.tv_sec) + ts.tv_nsec;
     }
+
+    // XXX: there was an error, probably because the driver didn't
+    // exist ... this should return
+    // a real error, like an exception!
+    return systemTime(SYSTEM_TIME_MONOTONIC);
 #else
-    int64_t when = systemTime(SYSTEM_TIME_MONOTONIC);
-    return (int64_t) nanoseconds_to_milliseconds(when);
+    return systemTime(SYSTEM_TIME_MONOTONIC);
 #endif
 }
 
diff --git a/libs/utils/Timers.cpp b/libs/utils/Timers.cpp
index 64b4701..d4f8516 100644
--- a/libs/utils/Timers.cpp
+++ b/libs/utils/Timers.cpp
@@ -39,7 +39,8 @@
             CLOCK_REALTIME,
             CLOCK_MONOTONIC,
             CLOCK_PROCESS_CPUTIME_ID,
-            CLOCK_THREAD_CPUTIME_ID
+            CLOCK_THREAD_CPUTIME_ID,
+            CLOCK_BOOTTIME
     };
     struct timespec t;
     t.tv_sec = t.tv_nsec = 0;
diff --git a/libs/utils/VectorImpl.cpp b/libs/utils/VectorImpl.cpp
index e78faa8..020ec15 100644
--- a/libs/utils/VectorImpl.cpp
+++ b/libs/utils/VectorImpl.cpp
@@ -20,7 +20,8 @@
 #include <stdlib.h>
 #include <stdio.h>
 
-#include <utils/Log.h>
+#include <cutils/log.h>
+
 #include <utils/Errors.h>
 #include <utils/SharedBuffer.h>
 #include <utils/VectorImpl.h>
@@ -56,9 +57,8 @@
 
 VectorImpl::~VectorImpl()
 {
-    ALOG_ASSERT(!mCount,
-        "[%p] "
-        "subclasses of VectorImpl must call finish_vector()"
+    ALOGW_IF(mCount,
+        "[%p] subclasses of VectorImpl must call finish_vector()"
         " in their destructor. Leaking %d bytes.",
         this, (int)(mCount*mItemSize));
     // We can't call _do_destroy() here because the vtable is already gone. 
@@ -66,7 +66,7 @@
 
 VectorImpl& VectorImpl::operator = (const VectorImpl& rhs)
 {
-    ALOG_ASSERT(mItemSize == rhs.mItemSize,
+    LOG_ALWAYS_FATAL_IF(mItemSize != rhs.mItemSize,
         "Vector<> have different types (this=%p, rhs=%p)", this, &rhs);
     if (this != &rhs) {
         release_storage();
@@ -251,6 +251,10 @@
     ALOG_ASSERT(index<size(),
         "[%p] replace: index=%d, size=%d", this, (int)index, (int)size());
 
+    if (index >= size()) {
+        return BAD_INDEX;
+    }
+
     void* item = editItemLocation(index);
     if (item != prototype) {
         if (item == 0)
@@ -294,10 +298,13 @@
     ALOG_ASSERT(index<capacity(),
         "[%p] editItemLocation: index=%d, capacity=%d, count=%d",
         this, (int)index, (int)capacity(), (int)mCount);
-            
-    void* buffer = editArrayImpl();
-    if (buffer)
-        return reinterpret_cast<char*>(buffer) + index*mItemSize;
+
+    if (index < capacity()) {
+        void* buffer = editArrayImpl();
+        if (buffer) {
+            return reinterpret_cast<char*>(buffer) + index*mItemSize;
+        }
+    }
     return 0;
 }
 
@@ -307,9 +314,12 @@
         "[%p] itemLocation: index=%d, capacity=%d, count=%d",
         this, (int)index, (int)capacity(), (int)mCount);
 
-    const  void* buffer = arrayImpl();
-    if (buffer)
-        return reinterpret_cast<const char*>(buffer) + index*mItemSize;
+    if (index < capacity()) {
+        const  void* buffer = arrayImpl();
+        if (buffer) {
+            return reinterpret_cast<const char*>(buffer) + index*mItemSize;
+        }
+    }
     return 0;
 }
 
@@ -484,15 +494,6 @@
     do_move_backward(dest, from, num);
 }
 
-void VectorImpl::reservedVectorImpl1() { }
-void VectorImpl::reservedVectorImpl2() { }
-void VectorImpl::reservedVectorImpl3() { }
-void VectorImpl::reservedVectorImpl4() { }
-void VectorImpl::reservedVectorImpl5() { }
-void VectorImpl::reservedVectorImpl6() { }
-void VectorImpl::reservedVectorImpl7() { }
-void VectorImpl::reservedVectorImpl8() { }
-
 /*****************************************************************************/
 
 SortedVectorImpl::SortedVectorImpl(size_t itemSize, uint32_t flags)
@@ -608,16 +609,6 @@
     return i;
 }
 
-void SortedVectorImpl::reservedSortedVectorImpl1() { };
-void SortedVectorImpl::reservedSortedVectorImpl2() { };
-void SortedVectorImpl::reservedSortedVectorImpl3() { };
-void SortedVectorImpl::reservedSortedVectorImpl4() { };
-void SortedVectorImpl::reservedSortedVectorImpl5() { };
-void SortedVectorImpl::reservedSortedVectorImpl6() { };
-void SortedVectorImpl::reservedSortedVectorImpl7() { };
-void SortedVectorImpl::reservedSortedVectorImpl8() { };
-
-
 /*****************************************************************************/
 
 }; // namespace android
diff --git a/libs/utils/ZipFileRO.cpp b/libs/utils/ZipFileRO.cpp
index cad7720..cc62213 100644
--- a/libs/utils/ZipFileRO.cpp
+++ b/libs/utils/ZipFileRO.cpp
@@ -118,7 +118,7 @@
  */
 int ZipFileRO::entryToIndex(const ZipEntryRO entry) const
 {
-    long ent = ((long) entry) - kZipEntryAdj;
+    long ent = ((intptr_t) entry) - kZipEntryAdj;
     if (ent < 0 || ent >= mHashTableSize || mHashTable[ent].name == NULL) {
         ALOGW("Invalid ZipEntryRO %p (%ld)\n", entry, ent);
         return -1;
@@ -320,6 +320,25 @@
     return true;
 }
 
+
+/*
+ * Round up to the next highest power of 2.
+ *
+ * Found on http://graphics.stanford.edu/~seander/bithacks.html.
+ */
+static unsigned int roundUpPower2(unsigned int val)
+{
+    val--;
+    val |= val >> 1;
+    val |= val >> 2;
+    val |= val >> 4;
+    val |= val >> 8;
+    val |= val >> 16;
+    val++;
+
+    return val;
+}
+
 bool ZipFileRO::parseZipArchive(void)
 {
     bool result = false;
@@ -459,7 +478,7 @@
     for (int ent = 0; ent < mHashTableSize; ent++) {
         if (mHashTable[ent].name != NULL) {
             if (idx-- == 0)
-                return (ZipEntryRO) (ent + kZipEntryAdj);
+                return (ZipEntryRO) (intptr_t)(ent + kZipEntryAdj);
         }
     }
 
diff --git a/libs/utils/misc.cpp b/libs/utils/misc.cpp
index b3c99e6..445a23a 100644
--- a/libs/utils/misc.cpp
+++ b/libs/utils/misc.cpp
@@ -39,90 +39,6 @@
 namespace android {
 
 /*
- * Like strdup(), but uses C++ "new" operator instead of malloc.
- */
-char* strdupNew(const char* str)
-{
-    char* newStr;
-    int len;
-
-    if (str == NULL)
-        return NULL;
-
-    len = strlen(str);
-    newStr = new char[len+1];
-    memcpy(newStr, str, len+1);
-
-    return newStr;
-}
-
-/*
- * Concatenate an argument vector.
- */
-char* concatArgv(int argc, const char* const argv[])
-{
-    char* newStr = NULL;
-    int len, totalLen, posn, idx;
-
-    /*
-     * First, figure out the total length.
-     */
-    totalLen = idx = 0;
-    while (1) {
-        if (idx == argc || argv[idx] == NULL)
-            break;
-        if (idx)
-            totalLen++;  // leave a space between args
-        totalLen += strlen(argv[idx]);
-        idx++;
-    }
-
-    /*
-     * Alloc the string.
-     */
-    newStr = new char[totalLen +1];
-    if (newStr == NULL)
-        return NULL;
-
-    /*
-     * Finally, allocate the string and copy data over.
-     */
-    idx = posn = 0;
-    while (1) {
-        if (idx == argc || argv[idx] == NULL)
-            break;
-        if (idx)
-            newStr[posn++] = ' ';
-
-        len = strlen(argv[idx]);
-        memcpy(&newStr[posn], argv[idx], len);
-        posn += len;
-
-        idx++;
-    }
-
-    assert(posn == totalLen);
-    newStr[posn] = '\0';
-
-    return newStr;
-}
-
-/*
- * Count the #of args in an argument vector.  Don't count the final NULL.
- */
-int countArgv(const char* const argv[])
-{
-    int count = 0;
-
-    while (argv[count] != NULL)
-        count++;
-
-    return count;
-}
-
-
-#include <stdio.h>
-/*
  * Get a file's type.
  */
 FileType getFileType(const char* fileName)
@@ -172,24 +88,6 @@
     return sb.st_mtime;
 }
 
-/*
- * Round up to the next highest power of 2.
- *
- * Found on http://graphics.stanford.edu/~seander/bithacks.html.
- */
-unsigned int roundUpPower2(unsigned int val)
-{
-    val--;
-    val |= val >> 1;
-    val |= val >> 2;
-    val |= val >> 4;
-    val |= val >> 8;
-    val |= val >> 16;
-    val++;
-
-    return val;
-}
-
 struct sysprop_change_callback_info {
     sysprop_change_callback callback;
     int priority;
diff --git a/opengl/libagl/Android.mk b/opengl/libagl/Android.mk
index 15e58f2..639c4d7 100644
--- a/opengl/libagl/Android.mk
+++ b/opengl/libagl/Android.mk
@@ -26,7 +26,7 @@
 LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
 LOCAL_CFLAGS += -fvisibility=hidden
 
-LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger libETC1
+LOCAL_SHARED_LIBRARIES := libcutils libhardware libutils libpixelflinger libETC1 libui
 LOCAL_LDLIBS := -lpthread -ldl
 
 ifeq ($(TARGET_ARCH),arm)
diff --git a/opengl/libagl/egl.cpp b/opengl/libagl/egl.cpp
index c31aebf..172ef95 100644
--- a/opengl/libagl/egl.cpp
+++ b/opengl/libagl/egl.cpp
@@ -31,6 +31,7 @@
 
 #include <utils/threads.h>
 #include <ui/ANativeObjectBase.h>
+#include <ui/Fence.h>
 
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
@@ -372,7 +373,16 @@
             GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
 
     // dequeue a buffer
-    if (nativeWindow->dequeueBuffer(nativeWindow, &buffer) != NO_ERROR) {
+    int fenceFd = -1;
+    if (nativeWindow->dequeueBuffer(nativeWindow, &buffer,
+            &fenceFd) != NO_ERROR) {
+        return setError(EGL_BAD_ALLOC, EGL_FALSE);
+    }
+
+    // wait for the buffer
+    sp<Fence> fence(new Fence(fenceFd));
+    if (fence->wait(Fence::TIMEOUT_NEVER) != NO_ERROR) {
+        nativeWindow->cancelBuffer(nativeWindow, buffer, fenceFd);
         return setError(EGL_BAD_ALLOC, EGL_FALSE);
     }
 
@@ -392,8 +402,6 @@
     // keep a reference on the buffer
     buffer->common.incRef(&buffer->common);
 
-    // Lock the buffer
-    nativeWindow->lockBuffer(nativeWindow, buffer);
     // pin the buffer down
     if (lock(buffer, GRALLOC_USAGE_SW_READ_OFTEN | 
             GRALLOC_USAGE_SW_WRITE_OFTEN, &bits) != NO_ERROR) {
@@ -412,7 +420,7 @@
         unlock(buffer);
     }
     // enqueue the last frame
-    nativeWindow->queueBuffer(nativeWindow, buffer);
+    nativeWindow->queueBuffer(nativeWindow, buffer, -1);
     if (buffer) {
         buffer->common.decRef(&buffer->common);
         buffer = 0;
@@ -517,15 +525,17 @@
     
     unlock(buffer);
     previousBuffer = buffer;
-    nativeWindow->queueBuffer(nativeWindow, buffer);
+    nativeWindow->queueBuffer(nativeWindow, buffer, -1);
     buffer = 0;
 
     // dequeue a new buffer
-    if (nativeWindow->dequeueBuffer(nativeWindow, &buffer) == NO_ERROR) {
-
-        // TODO: lockBuffer should rather be executed when the very first
-        // direct rendering occurs.
-        nativeWindow->lockBuffer(nativeWindow, buffer);
+    int fenceFd = -1;
+    if (nativeWindow->dequeueBuffer(nativeWindow, &buffer, &fenceFd) == NO_ERROR) {
+        sp<Fence> fence(new Fence(fenceFd));
+        if (fence->wait(Fence::TIMEOUT_NEVER)) {
+            nativeWindow->cancelBuffer(nativeWindow, buffer, fenceFd);
+            return setError(EGL_BAD_ALLOC, EGL_FALSE);
+        }
 
         // reallocate the depth-buffer if needed
         if ((width != buffer->width) || (height != buffer->height)) {
diff --git a/opengl/libs/Android.mk b/opengl/libs/Android.mk
index 42aaa24..eea79f8 100644
--- a/opengl/libs/Android.mk
+++ b/opengl/libs/Android.mk
@@ -122,7 +122,7 @@
 	GLES2/gl2.cpp.arm 	\
 #
 
-LOCAL_SHARED_LIBRARIES += libcutils libEGL
+LOCAL_SHARED_LIBRARIES += libcutils libutils libEGL
 LOCAL_LDLIBS := -lpthread -ldl
 LOCAL_MODULE:= libGLESv2
 
diff --git a/opengl/libs/EGL/egl_display.cpp b/opengl/libs/EGL/egl_display.cpp
index a46aa38..80072ab 100644
--- a/opengl/libs/EGL/egl_display.cpp
+++ b/opengl/libs/EGL/egl_display.cpp
@@ -263,7 +263,13 @@
     Mutex::Autolock _l(lock);
 
     if (refs == 0) {
-        return setError(EGL_NOT_INITIALIZED, EGL_FALSE);
+        /*
+         * From the EGL spec (3.2):
+         * "Termination of a display that has already been terminated,
+         *  (...), is allowed, but the only effect of such a call is
+         *  to return EGL_TRUE (...)
+         */
+        return EGL_TRUE;
     }
 
     // this is specific to Android, display termination is ref-counted.
diff --git a/opengl/libs/GLES2/gl2.cpp b/opengl/libs/GLES2/gl2.cpp
index 4345c2b..b00af1b 100644
--- a/opengl/libs/GLES2/gl2.cpp
+++ b/opengl/libs/GLES2/gl2.cpp
@@ -26,6 +26,9 @@
 #include <cutils/log.h>
 #include <cutils/properties.h>
 
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+#include <utils/Trace.h>
+
 #include "hooks.h"
 #include "egl_impl.h"
 
@@ -40,6 +43,7 @@
 #undef CALL_GL_API_RETURN
 
 #define DEBUG_CALL_GL_API 0
+#define SYSTRACE_CALL_GL_API 0
 
 #if USE_FAST_TLS_KEY
 
@@ -86,6 +90,13 @@
             ALOGD("[" #_api "] 0x%x", status); \
         }
 
+#elif SYSTRACE_CALL_GL_API
+
+    #define CALL_GL_API(_api, ...)                                       \
+        ATRACE_CALL();                                                   \
+        gl_hooks_t::gl_t const * const _c = &getGlThreadSpecific()->gl;  \
+        _c->_api(__VA_ARGS__);
+
 #else
 
     #define CALL_GL_API(_api, ...)                                       \
diff --git a/opengl/libs/GLES_trace/src/gltrace_context.cpp b/opengl/libs/GLES_trace/src/gltrace_context.cpp
index 45dbb43..3a8decc 100644
--- a/opengl/libs/GLES_trace/src/gltrace_context.cpp
+++ b/opengl/libs/GLES_trace/src/gltrace_context.cpp
@@ -119,7 +119,7 @@
 
     const size_t DEFAULT_BUFFER_SIZE = 8192;
     BufferedOutputStream *stream = new BufferedOutputStream(mStream, DEFAULT_BUFFER_SIZE);
-    GLTraceContext *traceContext = new GLTraceContext(id, this, stream);
+    GLTraceContext *traceContext = new GLTraceContext(id, version, this, stream);
     mPerContextState[eglContext] = traceContext;
 
     return traceContext;
@@ -129,8 +129,10 @@
     return mPerContextState[c];
 }
 
-GLTraceContext::GLTraceContext(int id, GLTraceState *state, BufferedOutputStream *stream) :
+GLTraceContext::GLTraceContext(int id, int version, GLTraceState *state,
+        BufferedOutputStream *stream) :
     mId(id),
+    mVersion(version),
     mState(state),
     mBufferedOutputStream(stream),
     mElementArrayBuffers(DefaultKeyedVector<GLuint, ElementArrayBuffer*>(NULL))
@@ -143,6 +145,10 @@
     return mId;
 }
 
+int GLTraceContext::getVersion() {
+    return mVersion;
+}
+
 GLTraceState *GLTraceContext::getGlobalTraceState() {
     return mState;
 }
@@ -203,6 +209,8 @@
 
     GLMessage_Function func = msg->function();
     if (func == GLMessage::eglSwapBuffers
+        || func == GLMessage::eglCreateContext
+        || func == GLMessage::eglMakeCurrent
         || func == GLMessage::glDrawArrays
         || func == GLMessage::glDrawElements) {
         mBufferedOutputStream->flush();
diff --git a/opengl/libs/GLES_trace/src/gltrace_context.h b/opengl/libs/GLES_trace/src/gltrace_context.h
index 323cfdc..4c38bba 100644
--- a/opengl/libs/GLES_trace/src/gltrace_context.h
+++ b/opengl/libs/GLES_trace/src/gltrace_context.h
@@ -50,6 +50,7 @@
 /** GL Trace Context info associated with each EGLContext */
 class GLTraceContext {
     int mId;                    /* unique context id */
+    int mVersion;               /* GL version, e.g: egl_connection_t::GLESv2_INDEX */
     GLTraceState *mState;       /* parent GL Trace state (for per process GL Trace State Info) */
 
     void *fbcontents;           /* memory area to read framebuffer contents */
@@ -65,8 +66,9 @@
 public:
     gl_hooks_t *hooks;
 
-    GLTraceContext(int id, GLTraceState *state, BufferedOutputStream *stream);
+    GLTraceContext(int id, int version, GLTraceState *state, BufferedOutputStream *stream);
     int getId();
+    int getVersion();
     GLTraceState *getGlobalTraceState();
     void getCompressedFB(void **fb, unsigned *fbsize,
                             unsigned *fbwidth, unsigned *fbheight,
diff --git a/opengl/libs/GLES_trace/src/gltrace_fixup.cpp b/opengl/libs/GLES_trace/src/gltrace_fixup.cpp
index 3597b26..1bd790e 100644
--- a/opengl/libs/GLES_trace/src/gltrace_fixup.cpp
+++ b/opengl/libs/GLES_trace/src/gltrace_fixup.cpp
@@ -15,6 +15,7 @@
  */
 
 #include <cutils/log.h>
+#include <EGL/egldefs.h>
 #include <GLES/gl.h>
 #include <GLES/glext.h>
 #include <GLES2/gl2.h>
@@ -592,6 +593,11 @@
 }
 
 void trace_VertexAttribPointerDataForGlDrawArrays(GLTraceContext *context, GLMessage *glmsg) {
+    if (context->getVersion() == egl_connection_t::GLESv1_INDEX) {
+        // only supported for GLES2 and above
+        return;
+    }
+
     /* void glDrawArrays(GLenum mode, GLint first, GLsizei count) */
     GLsizei count = glmsg->args(2).intvalue(0);
 
@@ -604,6 +610,11 @@
 
 void trace_VertexAttribPointerDataForGlDrawElements(GLTraceContext *context, GLMessage *glmsg,
                             GLvoid *indices) {
+    if (context->getVersion() == egl_connection_t::GLESv1_INDEX) {
+        // only supported for GLES2 and above
+        return;
+    }
+
     /* void glDrawElements(GLenum mode, GLsizei count, GLenum type, const GLvoid* indices) */
     GLsizei count = glmsg->args(1).intvalue(0);
     GLenum type = glmsg->args(2).intvalue(0);
diff --git a/opengl/specs/EGL_ANDROID_fence_sync.txt b/opengl/specs/EGL_ANDROID_fence_sync.txt
new file mode 100644
index 0000000..316ee1c
--- /dev/null
+++ b/opengl/specs/EGL_ANDROID_fence_sync.txt
@@ -0,0 +1,268 @@
+Name
+
+    ANDROID_fence_sync
+
+Name Strings
+
+    EGL_ANDROID_fence_sync
+
+Contributors
+
+    Jamie Gennis
+
+Contact
+
+    Jamie Gennis, Google Inc. (jgennis 'at' google.com)
+
+Status
+
+    Draft.
+
+Version
+
+    Version 2, July 23, 2012
+
+Number
+
+    EGL Extension #XXX
+
+Dependencies
+
+    Requires EGL 1.1
+
+    This extension is written against the wording of the EGL 1.2 Specification
+
+    EGL_KHR_fence_sync is required.
+
+Overview
+
+    This extension enables the creation of EGL fence sync objects that are
+    associated with an Android Sync HAL fence object.  These EGL fence sync
+    objects have nearly identical semantics to those defined by the
+    KHR_fence_sync extension, except that they have an additional attribute
+    storing the file descriptor referring to the native Android fence object.
+
+New Types
+
+    None.
+
+New Procedures and Functions
+
+    EGLint eglDupAndroidFenceFDANDROID(
+                        EGLDisplay dpy,
+                        EGLSyncKHR);
+
+New Tokens
+
+    Accepted by the <type> parameter of eglCreateSyncKHR, and returned
+    in <value> when eglGetSyncAttribKHR is called with <attribute>
+    EGL_SYNC_TYPE_KHR:
+
+    EGL_SYNC_ANDROID_FENCE_ANDROID          0x3144
+
+    Accepted by the <attrib_list> parameter of eglCreateSyncKHR:
+
+    EGL_SYNC_ANDROID_FENCE_FD_ANDROID       0x3145
+
+    Accepted by the <attrib_list> parameter of eglCreateSyncKHR, and returned
+    by eglDupAndroidFenceFDANDROID in the event of an error:
+
+    EGL_NO_ANDROID_FENCE_ANDROID            -1
+
+    Returned in <value> when eglGetSyncAttribKHR is called with <attribute>
+    EGL_SYNC_CONDITION_KHR:
+
+    EGL_SYNC_ANDROID_FENCE_SIGNALED_ANDROID 0x3146
+
+Changes to Chapter 3 of the EGL 1.2 Specification (EGL Functions and Errors)
+
+    Add the following after the sixth paragraph of Section 3.8.1 (Sync
+    Objects), added by KHR_fence_sync
+
+    "If <type> is EGL_SYNC_ANDROID_FENCE_ANDROID, an EGL Android fence sync
+    object is created. In this case the EGL_SYNC_ANDROID_FENCE_FD_ANDROID
+    attribute may optionally be specified. If this attribute is specified, it
+    must be set to either a file descriptor that refers to a native Android
+    fence object or to the value EGL_NO_ANDROID_FENCE_ANDROID.
+
+    The default values for the EGL Android fence sync object attributes are as
+    follows:
+
+      Attribute Name                     Initial Attribute Value(s)
+      ---------------                    --------------------------
+      EGL_SYNC_TYPE_KHR                  EGL_SYNC_ANDROID_FENCE_ANDROID
+      EGL_SYNC_STATUS_KHR                EGL_UNSIGNALED_KHR
+      EGL_SYNC_CONDITION_KHR             EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR
+      EGL_SYNC_ANDROID_FENCE_FD_ANDROID  EGL_NO_ANDROID_FENCE_ANDROID
+
+    If the EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute is not
+    EGL_NO_ANDROID_FENCE_ANDROID then the EGL_SYNC_CONDITION_KHR attribute is
+    set to EGL_SYNC_ANDROID_FENCE_SIGNALED_ANDROID and the EGL_SYNC_STATUS_KHR
+    attribute is set to reflect the signal status of the native Android fence
+    object. Additionally, the EGL implementation assumes ownership of the file
+    descriptor, so the caller must not use it after calling eglCreateSyncKHR."
+
+    Modify Section 3.8.1 (Sync Objects), added by KHR_fence_sync, starting at
+    the seventh paragraph
+
+    "When a fence sync object is created or when an EGL Android fence sync
+    object is created with the EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute set
+    to EGL_NO_ANDROID_FENCE_ANDROID, eglCreateSyncKHR also inserts a fence
+    command into the command stream of the bound client API's current context
+    (i.e., the context returned by eglGetCurrentContext), and associates it
+    with the newly created sync object.
+
+    After associating the fence command with an EGL Android fence sync object,
+    the next Flush() operation performed by the current client API causes a
+    new native Android fence object to be created, and the
+    EGL_SYNC_ANDROID_FENCE_ANDROID attribute of the EGL Android fence object
+    is set to a file descriptor that refers to the new native Android fence
+    object. This new native Android fence object is signaled when the EGL
+    Android fence sync object is signaled.
+
+    When the condition of the sync object is satisfied by the fence command,
+    the sync is signaled by the associated client API context, causing any
+    eglClientWaitSyncKHR commands (see below) blocking on <sync> to unblock. If
+    the sync object is an EGL Android fence sync object then the native Android
+    fence object is also signaled when the condition is satisfied. The
+    EGL_SYNC_PRIOR_COMMANDS_COMPLETE_KHR condition is satisfied by completion
+    of the fence command corresponding to the sync object and all preceding
+    commands in the associated client API context's command stream. The sync
+    object will not be signaled until all effects from these commands on the
+    client API's internal and framebuffer state are fully realized. No other
+    state is affected by execution of the fence command.
+
+    The EGL_SYNC_ANDROID_FENCE_SIGNALED_ANDROID condition is satisfied by the
+    signaling of the native Android fence object referred to by the
+    EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute. When this happens any
+    eglClientWaitSyncKHR commands blocking on <sync> unblock."
+
+    Modify the list of eglCreateSyncKHR errors in Section 3.8.1 (Sync Objects),
+    added by KHR_fence_sync
+
+    "Errors
+    ------
+
+      * If <dpy> is not the name of a valid, initialized EGLDisplay,
+        EGL_NO_SYNC_KHR is returned and an EGL_BAD_DISPLAY error is
+        generated.
+      * If <type> is EGL_SYNC_FENCE_KHR and <attrib_list> is neither NULL nor
+        empty (containing only EGL_NONE), EGL_NO_SYNC_KHR is returned and an
+        EGL_BAD_ATTRIBUTE error is generated.
+      * If <type> is EGL_SYNC_ANDROID_FENCE_ANDROID and <attrib_list> contains
+        an attribute other than EGL_SYNC_ANDROID_FENCE_FD_ANDROID, EGL_NO_SYNC_KHR is
+        returned and an EGL_BAD_ATTRIBUTE error is generated.
+      * If <type> is not a supported type of sync object,
+        EGL_NO_SYNC_KHR is returned and an EGL_BAD_ATTRIBUTE error is
+        generated.
+      * If <type> is EGL_SYNC_FENCE_KHR or EGL_SYNC_ANDROID_FENCE_ANDROID and
+        no context is current for the bound API (i.e., eglGetCurrentContext
+        returns EGL_NO_CONTEXT), EGL_NO_SYNC_KHR is returned and an
+        EGL_BAD_MATCH error is generated.
+      * If <type> is EGL_SYNC_FENCE_KHR or EGL_SYNC_ANDROID_FENCE_ANDROID and
+        <dpy> does not match the EGLDisplay of the currently bound context for
+        the currently bound client API (the EGLDisplay returned by
+        eglGetCurrentDisplay()) then EGL_NO_SYNC_KHR is returned and an
+        EGL_BAD_MATCH error is generated.
+      * If <type> is EGL_SYNC_FENCE_KHR or EGL_SYNC_ANDROID_FENCE_ANDROID and
+        the currently bound client API does not support the client API
+        extension indicating it can place fence commands, then EGL_NO_SYNC_KHR
+        is returned and an EGL_BAD_MATCH error is generated."
+
+    Modify table 3.cc in Section 3.8.1 (Sync Objects), added by KHR_fence_sync
+
+    "
+    Attribute                          Description                Supported Sync Objects
+    -----------------                  -----------------------    ----------------------
+    EGL_SYNC_TYPE_KHR                  Type of the sync object    All
+    EGL_SYNC_STATUS_KHR                Status of the sync object  All
+    EGL_SYNC_CONDITION_KHR             Signaling condition        EGL_SYNC_FENCE_KHR and
+                                                                  EGL_SYNC_ANDROID_FENCE_ANDROID only
+    "
+
+    Modify the second paragraph description of eglDestroySyncKHR in Section
+    3.8.1 (Sync Objects), added by KHR_fence_sync
+
+    "If no errors are generated, EGL_TRUE is returned, and <sync> will no
+    longer be the handle of a valid sync object.  Additionally, if <sync> is an
+    EGL Android fence sync object and the EGL_SYNC_ANDROID_FENCE_FD_ANDROID
+    attribute is not EGL_NO_ANDROID_FENCE_ANDROID then that file descriptor is
+    closed."
+
+    Add the following after the last paragraph of Section 3.8.1 (Sync
+    Objects), added by KHR_fence_sync
+
+    The command
+
+        EGLint eglDupAndroidFenceFDANDROID(
+                            EGLdisplay dpy,
+                            EGLSyncKHR sync);
+
+    duplicates the file descriptor stored in the
+    EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute of an EGL Android fence sync
+    object and returns the new file descriptor.
+
+    Errors
+    ------
+
+      * If <sync> is not a valid sync object for <dpy>,
+        EGL_NO_ANDROID_FENCE_ANDROID is returned and an EGL_BAD_PARAMETER
+        error is generated.
+      * If the EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute of <sync> is
+        EGL_NO_ANDROID_FENCE_ANDROID, EGL_NO_ANDROID_FENCE_ANDROID is returned
+        and an EGL_BAD_PARAMETER error is generated.
+      * If <dpy> does not match the display passed to eglCreateSyncKHR
+        when <sync> was created, the behaviour is undefined."
+
+Issues
+
+    1. Should EGLSyncKHR objects that wrap Android fence objects use the
+    EGL_SYNC_FENCE_KHR type?
+
+    RESOLVED: A new sync object type will be added.
+
+    We don't want to require all EGL fence sync objects to wrap Android fence
+    objects, so we need some way to tell the EGL implementation at sync object
+    creation whether the sync object should support querying the Android fence
+    FD attribute. We could do this with either a new sync object type or with a
+    boolean attribute. It might be nice to pick up future signaling conditions
+    that might be added for fence sync objects, but there may be things that
+    get added that don't make sense in the context of Android fence objects.
+
+    2. Who is responsible for dup'ing the Android fence file descriptors?
+
+    RESOLVED: Whenever a file descriptor is passed into or returned from an
+    EGL call in this extension, ownership of that file descriptor is
+    transfered. The recipient of the file descriptor must close it when it is
+    no longer needed, and the provider of the file descriptor must dup it
+    before providing it if they require continued use of the native Android
+    fence.
+
+    3. Can the EGL_SYNC_ANDROID_FENCE_FD_ANDROID attribute be queried?
+
+    RESOLVED: No.
+
+    Returning the file descriptor owned by the EGL implementation would
+    violate the file descriptor ownership rule described in issue #2. Having
+    eglGetSyncAttribKHR return a different (dup'd) file descriptor each time
+    it's called seems wrong, so a new function was added to explicitly dup the
+    file descriptor.
+
+    That said, the attribute is useful both as a way to pass an existing file
+    descriptor to eglCreateSyncKHR and as a way to describe the subsequent
+    behavior of EGL Android fence sync objects, so it is left as an attribute
+    for which the value cannot be queried.
+
+Revision History
+
+#2 (Jamie Gennis, July 23, 2012)
+    - Changed the file descriptor ownership transferring behavior.
+    - Added the eglDupAndroidFenceFDANDROID function.
+    - Removed EGL_SYNC_ANDROID_FENCE_FD_ANDROID from the table of gettable
+    attributes.
+    - Added language specifying that a native Android fence is created at the
+    flush following the creation of an EGL Android fence sync object that is
+    not passed an existing native fence.
+
+#1 (Jamie Gennis, May 29, 2012)
+    - Initial draft.
diff --git a/opengl/specs/README b/opengl/specs/README
index 16b278f..af3f165 100644
--- a/opengl/specs/README
+++ b/opengl/specs/README
@@ -10,4 +10,7 @@
 0x3141               (unused)
 0x3142               EGL_ANDROID_recordable
 0x3143               EGL_VERSION_HW_ANDROID (internal use)
-0x3144 - 0x314F      (unused)
+0x3144               EGL_SYNC_ANDROID_FENCE_ANDROID
+0x3145               EGL_SYNC_FENCE_FD_ANDROID
+0x3146               EGL_SYNC_ANDROID_FENCE_SIGNALED_ANDROID
+0x3147 - 0x314F      (unused)
diff --git a/opengl/tests/Android.mk b/opengl/tests/Android.mk
index 071c679..3ae3b4e 100644
--- a/opengl/tests/Android.mk
+++ b/opengl/tests/Android.mk
@@ -20,7 +20,7 @@
 	textures \
 	tritex \
 
-ifneq ($(TARGET_BUILD_PDK), true)
+ifneq (,$(TARGET_BUILD_JAVA_SUPPORT_LEVEL))
 dirs += \
 	gl2_cameraeye \
 	gl2_java \
@@ -29,11 +29,16 @@
 	gl_jni \
 	gl_perfapp \
 	lighting1709 \
-	testFramerate \
 	testLatency \
 	testPauseResume \
 	testViewport \
 
-endif
+endif # JAVA_SUPPORT
+
+ifeq (platform,$(TARGET_BUILD_JAVA_SUPPORT_LEVEL))
+dirs += \
+	testFramerate
+
+endif # JAVA_SUPPORT platform
 
 include $(call all-named-subdir-makefiles, $(dirs))
diff --git a/opengl/tests/hwc/hwcColorEquiv.cpp b/opengl/tests/hwc/hwcColorEquiv.cpp
index bb305dc..160906d 100644
--- a/opengl/tests/hwc/hwcColorEquiv.cpp
+++ b/opengl/tests/hwc/hwcColorEquiv.cpp
@@ -124,7 +124,7 @@
 // Globals
 static const int texUsage = GraphicBuffer::USAGE_HW_TEXTURE |
         GraphicBuffer::USAGE_SW_WRITE_RARELY;
-static hwc_composer_device_t *hwcDevice;
+static hwc_composer_device_1_t *hwcDevice;
 static EGLDisplay dpy;
 static EGLSurface surface;
 static EGLint width, height;
@@ -344,16 +344,16 @@
     hwcTestFillColorHBlend(equivFrame.get(), refFormat->format,
                            startRefColor, endRefColor);
 
-    hwc_layer_list_t *list;
-    size_t size = sizeof(hwc_layer_list) + numFrames * sizeof(hwc_layer_t);
-    if ((list = (hwc_layer_list_t *) calloc(1, size)) == NULL) {
+    hwc_display_contents_1_t *list;
+    size_t size = sizeof(hwc_display_contents_1_t) + numFrames * sizeof(hwc_layer_1_t);
+    if ((list = (hwc_display_contents_1_t *) calloc(1, size)) == NULL) {
         testPrintE("Allocate list failed");
         exit(11);
     }
     list->flags = HWC_GEOMETRY_CHANGED;
     list->numHwLayers = numFrames;
 
-    hwc_layer_t *layer = &list->hwLayers[0];
+    hwc_layer_1_t *layer = &list->hwLayers[0];
     layer->handle = refFrame->handle;
     layer->blending = HWC_BLENDING_NONE;
     layer->sourceCrop.left = 0;
@@ -383,7 +383,7 @@
 
     // Perform prepare operation
     if (verbose) { testPrintI("Prepare:"); hwcTestDisplayList(list); }
-    hwcDevice->prepare(hwcDevice, list);
+    hwcDevice->prepare(hwcDevice, 1, &list);
     if (verbose) {
         testPrintI("Post Prepare:");
         hwcTestDisplayListPrepareModifiable(list);
@@ -393,7 +393,9 @@
     list->flags &= ~HWC_GEOMETRY_CHANGED;
 
     if (verbose) {hwcTestDisplayListHandles(list); }
-    hwcDevice->set(hwcDevice, dpy, surface, list);
+    list->dpy = dpy;
+    list->sur = surface;
+    hwcDevice->set(hwcDevice, 1, &list);
 
     testDelay(endDelay);
 
diff --git a/opengl/tests/hwc/hwcCommit.cpp b/opengl/tests/hwc/hwcCommit.cpp
index efa646c..3681fbb 100644
--- a/opengl/tests/hwc/hwcCommit.cpp
+++ b/opengl/tests/hwc/hwcCommit.cpp
@@ -230,7 +230,7 @@
 // Globals
 static const int texUsage = GraphicBuffer::USAGE_HW_TEXTURE |
         GraphicBuffer::USAGE_SW_WRITE_RARELY;
-static hwc_composer_device_t *hwcDevice;
+static hwc_composer_device_1_t *hwcDevice;
 static EGLDisplay dpy;
 static EGLSurface surface;
 static EGLint width, height;
@@ -1397,7 +1397,7 @@
 // Given a list of rectangles, determine how many HWC will commit to render
 uint32_t numOverlays(list<Rectangle>& rectList)
 {
-    hwc_layer_list_t *hwcList;
+    hwc_display_contents_1_t *hwcList;
     list<sp<GraphicBuffer> > buffers;
 
     hwcList = hwcTestCreateLayerList(rectList.size());
@@ -1406,7 +1406,7 @@
         exit(30);
     }
 
-    hwc_layer_t *layer = &hwcList->hwLayers[0];
+    hwc_layer_1_t *layer = &hwcList->hwLayers[0];
     for (std::list<Rectangle>::iterator it = rectList.begin();
          it != rectList.end(); ++it, ++layer) {
         // Allocate the texture for the source frame
@@ -1430,7 +1430,7 @@
 
     // Perform prepare operation
     if (verbose) { testPrintI("Prepare:"); hwcTestDisplayList(hwcList); }
-    hwcDevice->prepare(hwcDevice, hwcList);
+    hwcDevice->prepare(hwcDevice, 1, &hwcList);
     if (verbose) {
         testPrintI("Post Prepare:");
         hwcTestDisplayListPrepareModifiable(hwcList);
diff --git a/opengl/tests/hwc/hwcRects.cpp b/opengl/tests/hwc/hwcRects.cpp
index 906c169..ec0403f 100644
--- a/opengl/tests/hwc/hwcRects.cpp
+++ b/opengl/tests/hwc/hwcRects.cpp
@@ -165,7 +165,7 @@
 list<Rectangle> rectangle;
 static const int texUsage = GraphicBuffer::USAGE_HW_TEXTURE |
         GraphicBuffer::USAGE_SW_WRITE_RARELY;
-static hwc_composer_device_t *hwcDevice;
+static hwc_composer_device_1_t *hwcDevice;
 static EGLDisplay dpy;
 static EGLSurface surface;
 static EGLint width, height;
@@ -307,14 +307,14 @@
     }
 
     // Create list of frames
-    hwc_layer_list_t *list;
+    hwc_display_contents_1_t *list;
     list = hwcTestCreateLayerList(rectangle.size());
     if (list == NULL) {
         testPrintE("hwcTestCreateLayerList failed");
         exit(5);
     }
 
-    hwc_layer_t *layer = &list->hwLayers[0];
+    hwc_layer_1_t *layer = &list->hwLayers[0];
     for (std::list<Rectangle>::iterator it = rectangle.begin();
          it != rectangle.end(); ++it, ++layer) {
         layer->handle = it->texture->handle;
@@ -329,7 +329,7 @@
 
     // Perform prepare operation
     if (verbose) { testPrintI("Prepare:"); hwcTestDisplayList(list); }
-    hwcDevice->prepare(hwcDevice, list);
+    hwcDevice->prepare(hwcDevice, 1, &list);
     if (verbose) {
         testPrintI("Post Prepare:");
         hwcTestDisplayListPrepareModifiable(list);
@@ -341,7 +341,9 @@
     // Perform the set operation(s)
     if (verbose) {testPrintI("Set:"); }
     if (verbose) { hwcTestDisplayListHandles(list); }
-    hwcDevice->set(hwcDevice, dpy, surface, list);
+    list->dpy = dpy;
+    list->sur = surface;
+    hwcDevice->set(hwcDevice, 1, &list);
 
     testDelay(endDelay);
 
diff --git a/opengl/tests/hwc/hwcStress.cpp b/opengl/tests/hwc/hwcStress.cpp
index b02a424..3e8ea8d 100644
--- a/opengl/tests/hwc/hwcStress.cpp
+++ b/opengl/tests/hwc/hwcStress.cpp
@@ -192,7 +192,7 @@
 // File scope globals
 static const int texUsage = GraphicBuffer::USAGE_HW_TEXTURE |
         GraphicBuffer::USAGE_SW_WRITE_RARELY;
-static hwc_composer_device_t *hwcDevice;
+static hwc_composer_device_1_t *hwcDevice;
 static EGLDisplay dpy;
 static EGLSurface surface;
 static EGLint width, height;
@@ -409,7 +409,7 @@
         // generated for this pass.
         srand48(pass);
 
-        hwc_layer_list_t *list;
+        hwc_display_contents_1_t *list;
         list = hwcTestCreateLayerList(testRandMod(frames.size()) + 1);
         if (list == NULL) {
             testPrintE("hwcTestCreateLayerList failed");
@@ -428,7 +428,7 @@
         for (unsigned int n1 = 0; n1 < list->numHwLayers; n1++) {
             unsigned int idx = testRandMod(selectedFrames[n1].size());
             sp<GraphicBuffer> gBuf = selectedFrames[n1][idx];
-            hwc_layer_t *layer = &list->hwLayers[n1];
+            hwc_layer_1_t *layer = &list->hwLayers[n1];
             layer->handle = gBuf->handle;
 
             layer->blending = blendingOps[testRandMod(NUMA(blendingOps))];
@@ -478,7 +478,7 @@
 
         // Perform prepare operation
         if (verbose) { testPrintI("Prepare:"); hwcTestDisplayList(list); }
-        hwcDevice->prepare(hwcDevice, list);
+        hwcDevice->prepare(hwcDevice, 1, &list);
         if (verbose) {
             testPrintI("Post Prepare:");
             hwcTestDisplayListPrepareModifiable(list);
@@ -491,13 +491,15 @@
         if (verbose) {testPrintI("Set:"); }
         for (unsigned int n1 = 0; n1 < numSet; n1++) {
             if (verbose) { hwcTestDisplayListHandles(list); }
-            hwcDevice->set(hwcDevice, dpy, surface, list);
+            list->dpy = dpy;
+            list->sur = surface;
+            hwcDevice->set(hwcDevice, 1, &list);
 
             // Prandomly select a new set of handles
             for (unsigned int n1 = 0; n1 < list->numHwLayers; n1++) {
                 unsigned int idx = testRandMod(selectedFrames[n1].size());
                 sp<GraphicBuffer> gBuf = selectedFrames[n1][idx];
-                hwc_layer_t *layer = &list->hwLayers[n1];
+                hwc_layer_1_t *layer = &list->hwLayers[n1];
                 layer->handle = (native_handle_t *) gBuf->handle;
             }
 
diff --git a/opengl/tests/hwc/hwcTestLib.cpp b/opengl/tests/hwc/hwcTestLib.cpp
index 28e0c3f..d567e6e 100644
--- a/opengl/tests/hwc/hwcTestLib.cpp
+++ b/opengl/tests/hwc/hwcTestLib.cpp
@@ -134,7 +134,7 @@
 }
 
 // Open Hardware Composer Device
-void hwcTestOpenHwc(hwc_composer_device_t **hwcDevicePtr)
+void hwcTestOpenHwc(hwc_composer_device_1_t **hwcDevicePtr)
 {
     int rv;
     hw_module_t const *hwcModule;
@@ -145,7 +145,7 @@
         perror(NULL);
         exit(77);
     }
-    if ((rv = hwc_open(hwcModule, hwcDevicePtr)) != 0) {
+    if ((rv = hwc_open_1(hwcModule, hwcDevicePtr)) != 0) {
         testPrintE("hwc_open failed, rv: %i", rv);
         errno = -rv;
         perror(NULL);
@@ -399,12 +399,12 @@
  * Dynamically creates layer list with numLayers worth
  * of hwLayers entries.
  */
-hwc_layer_list_t *hwcTestCreateLayerList(size_t numLayers)
+hwc_display_contents_1_t *hwcTestCreateLayerList(size_t numLayers)
 {
-    hwc_layer_list_t *list;
+    hwc_display_contents_1_t *list;
 
-    size_t size = sizeof(hwc_layer_list) + numLayers * sizeof(hwc_layer_t);
-    if ((list = (hwc_layer_list_t *) calloc(1, size)) == NULL) {
+    size_t size = sizeof(hwc_display_contents_1_t) + numLayers * sizeof(hwc_layer_1_t);
+    if ((list = (hwc_display_contents_1_t *) calloc(1, size)) == NULL) {
         return NULL;
     }
     list->flags = HWC_GEOMETRY_CHANGED;
@@ -417,13 +417,13 @@
  * hwcTestFreeLayerList
  * Frees memory previous allocated via hwcTestCreateLayerList().
  */
-void hwcTestFreeLayerList(hwc_layer_list_t *list)
+void hwcTestFreeLayerList(hwc_display_contents_1_t *list)
 {
     free(list);
 }
 
 // Display the settings of the layer list pointed to by list
-void hwcTestDisplayList(hwc_layer_list_t *list)
+void hwcTestDisplayList(hwc_display_contents_1_t *list)
 {
     testPrintI("  flags: %#x%s", list->flags,
                (list->flags & HWC_GEOMETRY_CHANGED) ? " GEOMETRY_CHANGED" : "");
@@ -494,7 +494,7 @@
  * Displays the portions of a list that are meant to be modified by
  * a prepare call.
  */
-void hwcTestDisplayListPrepareModifiable(hwc_layer_list_t *list)
+void hwcTestDisplayListPrepareModifiable(hwc_display_contents_1_t *list)
 {
     uint32_t numOverlays = 0;
     for (unsigned int layer = 0; layer < list->numHwLayers; layer++) {
@@ -522,7 +522,7 @@
  *
  * Displays the handles of all the graphic buffers in the list.
  */
-void hwcTestDisplayListHandles(hwc_layer_list_t *list)
+void hwcTestDisplayListHandles(hwc_display_contents_1_t *list)
 {
     const unsigned int maxLayersPerLine = 6;
 
diff --git a/opengl/tests/hwc/hwcTestLib.h b/opengl/tests/hwc/hwcTestLib.h
index b0c3012..d7d5837 100644
--- a/opengl/tests/hwc/hwcTestLib.h
+++ b/opengl/tests/hwc/hwcTestLib.h
@@ -107,17 +107,17 @@
 // Function Prototypes
 void hwcTestInitDisplay(bool verbose, EGLDisplay *dpy, EGLSurface *surface,
     EGLint *width, EGLint *height);
-void hwcTestOpenHwc(hwc_composer_device_t **hwcDevicePtr);
+void hwcTestOpenHwc(hwc_composer_device_1_t **hwcDevicePtr);
 const struct hwcTestGraphicFormat *hwcTestGraphicFormatLookup(const char *desc);
 const struct hwcTestGraphicFormat *hwcTestGraphicFormatLookup(uint32_t id);
 const char *hwcTestGraphicFormat2str(uint32_t format);
 std::string hwcTestRect2str(const struct hwc_rect& rect);
 
-hwc_layer_list_t *hwcTestCreateLayerList(size_t numLayers);
-void hwcTestFreeLayerList(hwc_layer_list_t *list);
-void hwcTestDisplayList(hwc_layer_list_t *list);
-void hwcTestDisplayListPrepareModifiable(hwc_layer_list_t *list);
-void hwcTestDisplayListHandles(hwc_layer_list_t *list);
+hwc_display_contents_1_t *hwcTestCreateLayerList(size_t numLayers);
+void hwcTestFreeLayerList(hwc_display_contents_1_t *list);
+void hwcTestDisplayList(hwc_display_contents_1_t *list);
+void hwcTestDisplayListPrepareModifiable(hwc_display_contents_1_t *list);
+void hwcTestDisplayListHandles(hwc_display_contents_1_t *list);
 
 uint32_t hwcTestColor2Pixel(uint32_t format, ColorFract color, float alpha);
 void hwcTestColorConvert(uint32_t fromFormat, uint32_t toFormat,
diff --git a/opengl/tools/glgen/gen b/opengl/tools/glgen/gen
index 31f4190..3359a22 100755
--- a/opengl/tools/glgen/gen
+++ b/opengl/tools/glgen/gen
@@ -12,6 +12,7 @@
 mkdir -p out/com/google/android/gles_jni
 mkdir -p out/android/app
 mkdir -p out/android/graphics
+mkdir -p out/android/view
 mkdir -p out/android/opengl
 mkdir -p out/android/content
 mkdir -p out/android/content/pm
@@ -24,15 +25,33 @@
 echo "package android.app; import android.content.pm.IPackageManager; public class AppGlobals { public static IPackageManager getPackageManager() { return null;} }" > out/android/app/AppGlobals.java
 # echo "package android.content; import android.content.pm.PackageManager; public interface Context { public PackageManager getPackageManager(); }" > out/android/content/Context.java
 echo "package android.content.pm; public class ApplicationInfo {public int targetSdkVersion;}" > out/android/content/pm/ApplicationInfo.java
-echo "package android.content.pm; public interface IPackageManager {ApplicationInfo getApplicationInfo(java.lang.String packageName, int flags) throws android.os.RemoteException;}" > out/android/content/pm/IPackageManager.java
+echo "package android.content.pm; public interface IPackageManager {ApplicationInfo getApplicationInfo(java.lang.String packageName, int flags, java.lang.String userId) throws android.os.RemoteException;}" > out/android/content/pm/IPackageManager.java
 echo "package android.os; public class Build {public static class VERSION_CODES { public static final int CUPCAKE = 3;};	}" > out/android/os/Build.java
+echo "package android.os; public class UserId {public static String myUserId() { return \"\"; } }" > out/android/os/UserId.java
 echo "package android.os; public class RemoteException extends Exception {}" > out/android/os/RemoteException.java
 echo "package android.util; public class Log {public static void w(String a, String b) {} public static void e(String a, String b) {}}" > out/android/util/Log.java
 
+echo "package android.opengl; public abstract class EGLObjectHandle { public int getHandle() { return 0; } }" > out/android/opengl/EGLObjectHandle.java
+echo "package android.opengl; public class EGLSurface extends EGLObjectHandle {  }" > out/android/opengl/EGLSurface.java
+echo "package android.opengl; public class EGLContext extends EGLObjectHandle {  }" > out/android/opengl/EGLContext.java
+echo "package android.opengl; public class EGLDisplay extends EGLObjectHandle {  }" > out/android/opengl/EGLDisplay.java
+echo "package android.opengl; public class EGLConfig extends EGLObjectHandle {  }" > out/android/opengl/EGLConfig.java
+
+
+echo "package android.graphics;" > out/android/graphics/SurfaceTexture.java
+echo "public interface SurfaceTexture {}" >> out/android/graphics/SurfaceTexture.java
+echo "package android.view;" > out/android/view/SurfaceView.java
+echo "public interface SurfaceView { SurfaceHolder getHolder(); }" >> out/android/view/SurfaceView.java
+echo "package android.view;" > out/android/view/Surface.java
+echo "public interface Surface {}" >> out/android/view/Surface.java
+echo "package android.view;" > out/android/view/SurfaceHolder.java
+echo "public interface SurfaceHolder { Surface getSurface(); }" >> out/android/view/SurfaceHolder.java
+
+
 GLFILE=out/javax/microedition/khronos/opengles/GL.java
 cp stubs/jsr239/GLHeader.java-if $GLFILE
 
-GLGEN_FILES="CFunc.java CType.java CodeEmitter.java GenerateGL.java GenerateGLES.java GLESCodeEmitter.java JFunc.java JniCodeEmitter.java JType.java Jsr239CodeEmitter.java ParameterChecker.java"
+GLGEN_FILES="CFunc.java CType.java CodeEmitter.java EGLCodeEmitter.java GenerateEGL.java GenerateGL.java GenerateGLES.java GLESCodeEmitter.java JFunc.java JniCodeEmitter.java JType.java Jsr239CodeEmitter.java ParameterChecker.java"
 
 pushd src > /dev/null
 javac ${GLGEN_FILES}
@@ -59,11 +78,19 @@
     exit $JAVA_RESULT
 fi
 
+echo "Generating static EGL 1.4 bindings"
+java -classpath src GenerateEGL
+JAVA_RESULT=$?
+if [ $JAVA_RESULT -ne 0 ]; then
+    echo "Could not run GenerateEGL."
+    exit $JAVA_RESULT
+fi
+
 rm src/*.class
 
 pushd out > /dev/null
 mkdir classes
-javac -d classes com/google/android/gles_jni/GLImpl.java javax/microedition/khronos/opengles/GL10.java javax/microedition/khronos/opengles/GL10Ext.java javax/microedition/khronos/opengles/GL11.java javax/microedition/khronos/opengles/GL11Ext.java javax/microedition/khronos/opengles/GL11ExtensionPack.java android/opengl/GLES10.java android/opengl/GLES10Ext.java android/opengl/GLES11.java android/opengl/GLES11Ext.java android/opengl/GLES20.java
+javac -d classes android/opengl/EGL14.java com/google/android/gles_jni/GLImpl.java javax/microedition/khronos/opengles/GL10.java javax/microedition/khronos/opengles/GL10Ext.java javax/microedition/khronos/opengles/GL11.java javax/microedition/khronos/opengles/GL11Ext.java javax/microedition/khronos/opengles/GL11ExtensionPack.java android/opengl/GLES10.java android/opengl/GLES10Ext.java android/opengl/GLES11.java android/opengl/GLES11Ext.java android/opengl/GLES20.java
 popd > /dev/null
 JAVA_RESULT=$?
 if [ $JAVA_RESULT -ne 0 ]; then
@@ -90,6 +117,7 @@
     if cmp -s $1/$3 $2/$3 ; then
         echo "#    " $3 unchanged
     else
+        echo "#    " $3 changed
         if [ $SAID_PLEASE == "0" ] ; then
             echo Please evaluate the following commands:
             echo
@@ -101,18 +129,18 @@
     fi
 }
 
-compareGenerated ../../../core/jni generated/C com_google_android_gles_jni_GLImpl.cpp
-compareGenerated ../../java/com/google/android/gles_jni generated/com/google/android/gles_jni GLImpl.java
+compareGenerated ../../../../base/core/jni generated/C com_google_android_gles_jni_GLImpl.cpp
+compareGenerated ../../../../base/opengl/java/com/google/android/gles_jni generated/com/google/android/gles_jni GLImpl.java
 
 for x in GL.java GL10.java GL10Ext.java GL11.java GL11Ext.java GL11ExtensionPack.java
 do
-    compareGenerated ../../java/javax/microedition/khronos/opengles generated/javax/microedition/khronos/opengles $x
+    compareGenerated ../../../../base/opengl/java/javax/microedition/khronos/opengles generated/javax/microedition/khronos/opengles $x
 done
 
-for x in GLES10 GLES10Ext GLES11 GLES11Ext GLES20
+for x in EGL14 GLES10 GLES10Ext GLES11 GLES11Ext GLES20
 do
-    compareGenerated ../../java/android/opengl generated/android/opengl ${x}.java
-    compareGenerated ../../../core/jni generated/C android_opengl_${x}.cpp
+    compareGenerated ../../../../base/opengl/java/android/opengl generated/android/opengl ${x}.java
+    compareGenerated ../../../../base/core/jni generated/C android_opengl_${x}.cpp
 done
 
 if [ $KEEP_GENERATED == "0" ] ; then
diff --git a/opengl/tools/glgen/specs/egl/EGL14.spec b/opengl/tools/glgen/specs/egl/EGL14.spec
new file mode 100644
index 0000000..828e114
--- /dev/null
+++ b/opengl/tools/glgen/specs/egl/EGL14.spec
@@ -0,0 +1,33 @@
+EGLint eglGetError ( void )
+EGLDisplay eglGetDisplay ( EGLNativeDisplayType display_id )
+EGLBoolean eglInitialize ( EGLDisplay dpy, EGLint *major, EGLint *minor )
+EGLBoolean eglTerminate ( EGLDisplay dpy )
+const char * eglQueryString ( EGLDisplay dpy, EGLint name )
+EGLBoolean eglGetConfigs ( EGLDisplay dpy, EGLConfig *configs, EGLint config_size, EGLint *num_config )
+EGLBoolean eglChooseConfig ( EGLDisplay dpy, const EGLint *attrib_list, EGLConfig *configs, EGLint config_size, EGLint *num_config )
+EGLBoolean eglGetConfigAttrib ( EGLDisplay dpy, EGLConfig config, EGLint attribute, EGLint *value )
+EGLSurface eglCreateWindowSurface ( EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list )
+EGLSurface eglCreatePbufferSurface ( EGLDisplay dpy, EGLConfig config, const EGLint *attrib_list )
+EGLSurface eglCreatePixmapSurface ( EGLDisplay dpy, EGLConfig config, EGLNativePixmapType pixmap, const EGLint *attrib_list )
+EGLBoolean eglDestroySurface ( EGLDisplay dpy, EGLSurface surface )
+EGLBoolean eglQuerySurface ( EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint *value )
+EGLBoolean eglBindAPI ( EGLenum api )
+EGLenum eglQueryAPI ( void )
+EGLBoolean eglWaitClient ( void )
+EGLBoolean eglReleaseThread ( void )
+EGLSurface eglCreatePbufferFromClientBuffer ( EGLDisplay dpy, EGLenum buftype, EGLClientBuffer buffer, EGLConfig config, const EGLint *attrib_list )
+EGLBoolean eglSurfaceAttrib ( EGLDisplay dpy, EGLSurface surface, EGLint attribute, EGLint value )
+EGLBoolean eglBindTexImage ( EGLDisplay dpy, EGLSurface surface, EGLint buffer )
+EGLBoolean eglReleaseTexImage ( EGLDisplay dpy, EGLSurface surface, EGLint buffer )
+EGLBoolean eglSwapInterval ( EGLDisplay dpy, EGLint interval )
+EGLContext eglCreateContext ( EGLDisplay dpy, EGLConfig config, EGLContext share_context, const EGLint *attrib_list )
+EGLBoolean eglDestroyContext ( EGLDisplay dpy, EGLContext ctx )
+EGLBoolean eglMakeCurrent ( EGLDisplay dpy, EGLSurface draw, EGLSurface read, EGLContext ctx )
+EGLContext eglGetCurrentContext ( void )
+EGLSurface eglGetCurrentSurface ( EGLint readdraw )
+EGLDisplay eglGetCurrentDisplay ( void )
+EGLBoolean eglQueryContext ( EGLDisplay dpy, EGLContext ctx, EGLint attribute, EGLint *value )
+EGLBoolean eglWaitGL ( void )
+EGLBoolean eglWaitNative ( EGLint engine )
+EGLBoolean eglSwapBuffers ( EGLDisplay dpy, EGLSurface surface )
+EGLBoolean eglCopyBuffers ( EGLDisplay dpy, EGLSurface surface, EGLNativePixmapType target )
diff --git a/opengl/tools/glgen/specs/egl/checks.spec b/opengl/tools/glgen/specs/egl/checks.spec
new file mode 100644
index 0000000..34fb1ee
--- /dev/null
+++ b/opengl/tools/glgen/specs/egl/checks.spec
@@ -0,0 +1,13 @@
+eglInitialize check major 1 check minor 1
+eglGetConfigs check configs config_size
+eglChooseConfig check configs config_size check num_config 1 sentinel attrib_list EGL_NONE
+eglGetConfigAttrib check value 1
+//STUB function: //eglCreateWindowSurface sentinel attrib_list EGL_NONE
+eglCreatePbufferSurface sentinel attrib_list EGL_NONE
+//unsupported: eglCreatePixmapSurface sentinel attrib_list EGL_NONE
+eglCreatePixmapSurface unsupported
+eglCopyBuffers unsupported
+eglQuerySurface check value 1
+eglCreatePbufferFromClientBuffer sentinel attrib_list EGL_NONE
+eglCreateContext sentinel attrib_list EGL_NONE
+eglQueryContext check value 1
diff --git a/opengl/tools/glgen/src/CFunc.java b/opengl/tools/glgen/src/CFunc.java
index 4847694..a192c00 100644
--- a/opengl/tools/glgen/src/CFunc.java
+++ b/opengl/tools/glgen/src/CFunc.java
@@ -28,6 +28,7 @@
 
     boolean hasPointerArg = false;
     boolean hasTypedPointerArg = false;
+    boolean hasEGLHandleArg = false;
 
     public CFunc(String original) {
         this.original = original;
@@ -63,6 +64,9 @@
         if (argType.isTypedPointer()) {
             hasTypedPointerArg = true;
         }
+        if (argType.isEGLHandle()) {
+            hasEGLHandleArg = true;
+        }
     }
 
     public int getNumArgs() {
@@ -95,6 +99,10 @@
         return hasTypedPointerArg;
     }
 
+    public boolean hasEGLHandleArg() {
+        return hasEGLHandleArg;
+    }
+
     @Override
     public String toString() {
         String s =  "Function " + fname + " returns " + ftype + ": ";
diff --git a/opengl/tools/glgen/src/CType.java b/opengl/tools/glgen/src/CType.java
index e0f0ca6..92950ea 100644
--- a/opengl/tools/glgen/src/CType.java
+++ b/opengl/tools/glgen/src/CType.java
@@ -53,6 +53,16 @@
     return isPointer;
     }
 
+    public boolean isEGLHandle() {
+        if(baseType.equals("EGLContext")
+           || baseType.equals("EGLConfig")
+           || baseType.equals("EGLSurface")
+           || baseType.equals("EGLDisplay")) {
+               return true;
+        }
+        return false;
+    }
+
     boolean isVoid() {
     String baseType = getBaseType();
     return baseType.equals("GLvoid") ||
diff --git a/opengl/tools/glgen/src/EGLCodeEmitter.java b/opengl/tools/glgen/src/EGLCodeEmitter.java
new file mode 100644
index 0000000..300f776
--- /dev/null
+++ b/opengl/tools/glgen/src/EGLCodeEmitter.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2012 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.
+ */
+
+import java.io.PrintStream;
+
+/**
+ * Emits a Java interface and Java & C implementation for a C function.
+ *
+ * <p> The Java interface will have Buffer and array variants for functions that
+ * have a typed pointer argument.  The array variant will convert a single "<type> *data"
+ * argument to a pair of arguments "<type>[] data, int offset".
+ */
+public class EGLCodeEmitter extends JniCodeEmitter {
+
+    PrintStream mJavaImplStream;
+    PrintStream mCStream;
+
+    PrintStream mJavaInterfaceStream;
+
+    /**
+      */
+    public EGLCodeEmitter(String classPathName,
+                          ParameterChecker checker,
+                          PrintStream javaImplStream,
+                          PrintStream cStream) {
+        mClassPathName = classPathName;
+        mChecker = checker;
+
+        mJavaImplStream = javaImplStream;
+        mCStream = cStream;
+        mUseContextPointer = false;
+        mUseStaticMethods = true;
+        mUseSimpleMethodNames = true;
+        mUseHideCommentForAPI = false;
+    }
+
+    public void emitCode(CFunc cfunc, String original) {
+        emitCode(cfunc, original, null, mJavaImplStream,
+                mCStream);
+    }
+
+    public void emitNativeRegistration(String nativeRegistrationName) {
+        emitNativeRegistration(nativeRegistrationName, mCStream);
+    }
+}
diff --git a/opengl/tools/glgen/src/GenerateEGL.java b/opengl/tools/glgen/src/GenerateEGL.java
new file mode 100644
index 0000000..aaa748c
--- /dev/null
+++ b/opengl/tools/glgen/src/GenerateEGL.java
@@ -0,0 +1,109 @@
+/*
+ * Copyright 2012 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.
+ */
+
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.FileReader;
+import java.io.IOException;
+import java.io.PrintStream;
+
+public class GenerateEGL {
+
+    private static void copy(String filename, PrintStream out) throws IOException {
+        BufferedReader br = new BufferedReader(new FileReader(filename));
+        String s;
+        while ((s = br.readLine()) != null) {
+            out.println(s);
+        }
+    }
+
+    private static void emit(EGLCodeEmitter emitter,
+                             BufferedReader specReader,
+                             PrintStream glStream,
+                             PrintStream cStream) throws Exception {
+        String s = null;
+        while ((s = specReader.readLine()) != null) {
+            if (s.trim().startsWith("//")) {
+                continue;
+            }
+
+            CFunc cfunc = CFunc.parseCFunc(s);
+
+            String fname = cfunc.getName();
+            String stubRoot = "stubs/egl/" + fname;
+            String javaPath = stubRoot + ".java";
+            File f = new File(javaPath);
+            if (f.exists()) {
+                System.out.println("Special-casing function " + fname);
+                copy(javaPath, glStream);
+                copy(stubRoot + ".cpp", cStream);
+
+                // Register native function names
+                // This should be improved to require fewer discrete files
+                String filename = stubRoot + ".nativeReg";
+                BufferedReader br =
+                    new BufferedReader(new FileReader(filename));
+                String nfunc;
+                while ((nfunc = br.readLine()) != null) {
+                    emitter.addNativeRegistration(nfunc);
+                }
+            } else {
+                emitter.emitCode(cfunc, s);
+            }
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        int aidx = 0;
+        while ((aidx < args.length) && (args[aidx].charAt(0) == '-')) {
+            switch (args[aidx].charAt(1)) {
+            default:
+                System.err.println("Unknown flag: " + args[aidx]);
+                System.exit(1);
+            }
+
+            aidx++;
+        }
+
+        BufferedReader checksReader =
+            new BufferedReader(new FileReader("specs/egl/checks.spec"));
+        ParameterChecker checker = new ParameterChecker(checksReader);
+
+
+        BufferedReader specReader =
+                new BufferedReader(new FileReader("specs/egl/EGL14.spec"));
+
+        String egljFilename = "android/opengl/EGL14.java";
+        String eglcFilename = "android_opengl_EGL14.cpp";
+        PrintStream egljStream =
+            new PrintStream(new FileOutputStream("out/" + egljFilename));
+        PrintStream eglcStream =
+            new PrintStream(new FileOutputStream("out/" + eglcFilename));
+        egljStream.println("/*");
+        eglcStream.println("/*");
+        copy("stubs/egl/EGL14Header.java-if", egljStream);
+        copy("stubs/egl/EGL14cHeader.cpp", eglcStream);
+        EGLCodeEmitter emitter = new EGLCodeEmitter(
+                "android/opengl/EGL14",
+                checker, egljStream, eglcStream);
+        emit(emitter, specReader, egljStream, eglcStream);
+        emitter.emitNativeRegistration("register_android_opengl_jni_EGL14");
+        egljStream.println("}");
+        egljStream.close();
+        eglcStream.close();
+    }
+}
diff --git a/opengl/tools/glgen/src/JType.java b/opengl/tools/glgen/src/JType.java
index deb2f01..3f7cb73 100644
--- a/opengl/tools/glgen/src/JType.java
+++ b/opengl/tools/glgen/src/JType.java
@@ -48,6 +48,22 @@
     typeMapping.put(new CType("char", true, true), new JType("String", false, false));
     typeMapping.put(new CType("int"), new JType("int"));
 
+    // EGL primitive types
+    typeMapping.put(new CType("EGLint"), new JType("int"));
+    typeMapping.put(new CType("EGLBoolean"), new JType("boolean"));
+    typeMapping.put(new CType("EGLenum"), new JType("int"));
+    typeMapping.put(new CType("EGLNativePixmapType"), new JType("int"));
+    typeMapping.put(new CType("EGLNativeWindowType"), new JType("int"));
+    typeMapping.put(new CType("EGLNativeDisplayType"), new JType("int"));
+    typeMapping.put(new CType("EGLClientBuffer"), new JType("int"));
+
+    // EGL nonprimitive types
+    typeMapping.put(new CType("EGLConfig"), new JType("EGLConfig", true, false));
+    typeMapping.put(new CType("EGLContext"), new JType("EGLContext", true, false));
+    typeMapping.put(new CType("EGLDisplay"), new JType("EGLDisplay", true, false));
+    typeMapping.put(new CType("EGLSurface"), new JType("EGLSurface", true, false));
+
+
     // Untyped pointers map to untyped Buffers
     typeMapping.put(new CType("GLvoid", true, true),
             new JType("java.nio.Buffer", true, false));
@@ -88,7 +104,7 @@
     arrayTypeMapping.put(new CType("char", false, true),
             new JType("byte", false, true));
     arrayTypeMapping.put(new CType("GLboolean", false, true),
-                 new JType("boolean", false, true));
+            new JType("boolean", false, true));
     arrayTypeMapping.put(new CType("GLenum", false, true), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLfixed", true, true), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLfixed", false, true), new JType("int", false, true));
@@ -103,6 +119,13 @@
     arrayTypeMapping.put(new CType("GLuint", true, true), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLintptr"), new JType("int", false, true));
     arrayTypeMapping.put(new CType("GLsizeiptr"), new JType("int", false, true));
+
+    //EGL typed pointers map to arrays + offsets
+    arrayTypeMapping.put(new CType("EGLint", false, true), new JType("int", false, true));
+    arrayTypeMapping.put(new CType("EGLint", true, true), new JType("int", false, true));
+    arrayTypeMapping.put(new CType("EGLConfig", false, true), new JType("EGLConfig", true, true));
+    arrayTypeMapping.put(new CType("EGLConfig", true, true), new JType("EGLConfig", true, true));
+
     }
 
     public JType() {
@@ -158,6 +181,11 @@
         (baseType.indexOf("Buffer") != -1);
     }
 
+    public boolean isEGLHandle() {
+    return !isPrimitive() &&
+        (baseType.startsWith("EGL"));
+    }
+
     public static JType convert(CType ctype, boolean useArray) {
      JType javaType = null;
      if (useArray) {
diff --git a/opengl/tools/glgen/src/JniCodeEmitter.java b/opengl/tools/glgen/src/JniCodeEmitter.java
index 9fa2b74..774f40c 100644
--- a/opengl/tools/glgen/src/JniCodeEmitter.java
+++ b/opengl/tools/glgen/src/JniCodeEmitter.java
@@ -25,6 +25,8 @@
     static final boolean mUseCPlusPlus = true;
     protected boolean mUseContextPointer = true;
     protected boolean mUseStaticMethods = false;
+    protected boolean mUseSimpleMethodNames = false;
+    protected boolean mUseHideCommentForAPI = false;
     protected String mClassPathName;
     protected ParameterChecker mChecker;
     protected List<String> nativeRegistrations = new ArrayList<String>();
@@ -34,7 +36,9 @@
 
     public static String getJniName(JType jType) {
         String jniName = "";
-        if (jType.isClass()) {
+        if (jType.isEGLHandle()) {
+            return (jType.isArray() ? "[" : "" ) + "Landroid/opengl/" + jType.getBaseType() + ";";
+        } else if (jType.isClass()) {
             return "L" + jType.getBaseType() + ";";
         } else if (jType.isArray()) {
             jniName = "[";
@@ -63,7 +67,6 @@
         return jniName;
     }
 
-
     public void emitCode(CFunc cfunc, String original,
             PrintStream javaInterfaceStream,
             PrintStream javaImplStream,
@@ -96,6 +99,10 @@
             if (!duplicate) {
                 emitJniCode(jfunc, cStream);
             }
+            // Don't create IOBuffer versions of the EGL functions
+            if (cfunc.hasEGLHandleArg()) {
+                return;
+            }
         }
 
         jfunc = JFunc.convert(cfunc, false);
@@ -121,8 +128,13 @@
     }
 
     public void emitNativeDeclaration(JFunc jfunc, PrintStream out) {
-        out.println("    // C function " + jfunc.getCFunc().getOriginal());
-        out.println();
+        if (mUseHideCommentForAPI) {
+            out.println("    /* @hide C function " + jfunc.getCFunc().getOriginal() + " */");
+            out.println();
+        } else {
+            out.println("    // C function " + jfunc.getCFunc().getOriginal());
+            out.println();
+        }
 
         emitFunction(jfunc, out, true, false);
     }
@@ -197,15 +209,17 @@
                 out.println(iii + "}");
 
                 out.println(iii + "if (" + remaining + " < _needed) {");
-                if (emitExceptionCheck) {
-                    out.println(iii + indent + "_exception = 1;");
-                }
-                out.println(iii + indent + "jniThrowException(_env, " +
-                        "\"java/lang/IllegalArgumentException\", " +
-                        "\"" + (isBuffer ? "remaining()" : "length - " + offset) + " < needed\");");
+                out.println(iii + indent + "_exception = 1;");
+                out.println(iii + indent +
+                           "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                out.println(iii + indent +
+                           "_exceptionMessage = \"" +
+                           (isBuffer ? "remaining()" : "length - " + offset) +
+                           " < needed\";");
                 out.println(iii + indent + "goto exit;");
-                needsExit = true;
                 out.println(iii + "}");
+
+                needsExit = true;
             }
 
     boolean isNullAllowed(CFunc cfunc) {
@@ -213,28 +227,70 @@
         int index = 1;
         if (checks != null) {
             while (index < checks.length) {
-                if (checks[index].equals("return")) {
-                    index += 2;
-                } else if (checks[index].startsWith("check")) {
-                    index += 3;
-                } else if (checks[index].equals("ifcheck")) {
-                    index += 5;
-                } else if (checks[index].equals("unsupported")) {
-                    index += 1;
-                } else if (checks[index].equals("requires")) {
-                    index += 2;
-                } else if (checks[index].equals("nullAllowed")) {
+                if (checks[index].equals("nullAllowed")) {
                     return true;
                 } else {
-                    System.out.println("Error: unknown keyword \"" +
-                                       checks[index] + "\"");
-                    System.exit(0);
+                    index = skipOneCheck(checks, index);
                 }
             }
         }
         return false;
     }
 
+    boolean hasCheckTest(CFunc cfunc) {
+        String[] checks = mChecker.getChecks(cfunc.getName());
+        int index = 1;
+        if (checks != null) {
+            while (index < checks.length) {
+                if (checks[index].startsWith("check")) {
+                    return true;
+                } else {
+                    index = skipOneCheck(checks, index);
+                }
+            }
+        }
+        return false;
+    }
+
+    boolean hasIfTest(CFunc cfunc) {
+        String[] checks = mChecker.getChecks(cfunc.getName());
+        int index = 1;
+        if (checks != null) {
+            while (index < checks.length) {
+                if (checks[index].startsWith("ifcheck")) {
+                    return true;
+                } else {
+                    index = skipOneCheck(checks, index);
+                }
+            }
+        }
+        return false;
+    }
+
+    int skipOneCheck(String[] checks, int index) {
+        if (checks[index].equals("return")) {
+            index += 2;
+        } else if (checks[index].startsWith("check")) {
+            index += 3;
+        } else if (checks[index].startsWith("sentinel")) {
+            index += 3;
+        } else if (checks[index].equals("ifcheck")) {
+            index += 5;
+        } else if (checks[index].equals("unsupported")) {
+            index += 1;
+        } else if (checks[index].equals("requires")) {
+            index += 2;
+        } else if (checks[index].equals("nullAllowed")) {
+            index += 1;
+        } else {
+            System.out.println("Error: unknown keyword \"" +
+                               checks[index] + "\"");
+            System.exit(0);
+        }
+
+        return index;
+    }
+
     String getErrorReturnValue(CFunc cfunc) {
         CType returnType = cfunc.getType();
         boolean isVoid = returnType.isVoid();
@@ -242,6 +298,10 @@
             return null;
         }
 
+        if (returnType.getBaseType().startsWith("EGL")) {
+            return "(" + returnType.getDeclaration() + ") 0";
+        }
+
         String[] checks = mChecker.getChecks(cfunc.getName());
 
         int index = 1;
@@ -249,20 +309,8 @@
             while (index < checks.length) {
                 if (checks[index].equals("return")) {
                     return checks[index + 1];
-                } else if (checks[index].startsWith("check")) {
-                    index += 3;
-                } else if (checks[index].equals("ifcheck")) {
-                    index += 5;
-                } else if (checks[index].equals("unsupported")) {
-                    index += 1;
-                } else if (checks[index].equals("requires")) {
-                    index += 2;
-                } else if (checks[index].equals("nullAllowed")) {
-                    index += 1;
                 } else {
-                    System.out.println("Error: unknown keyword \"" +
-                                       checks[index] + "\"");
-                    System.exit(0);
+                    index = skipOneCheck(checks, index);
                 }
             }
         }
@@ -277,20 +325,8 @@
             while (index < checks.length) {
                 if (checks[index].equals("unsupported")) {
                     return true;
-                } else if (checks[index].equals("requires")) {
-                    index += 2;
-                } else if (checks[index].equals("return")) {
-                    index += 2;
-                } else if (checks[index].startsWith("check")) {
-                    index += 3;
-                } else if (checks[index].equals("ifcheck")) {
-                    index += 5;
-                } else if (checks[index].equals("nullAllowed")) {
-                    index += 1;
                 } else {
-                    System.out.println("Error: unknown keyword \"" +
-                                       checks[index] + "\"");
-                    System.exit(0);
+                    index = skipOneCheck(checks, index);
                 }
             }
         }
@@ -302,22 +338,10 @@
         int index = 1;
         if (checks != null) {
             while (index < checks.length) {
-                if (checks[index].equals("unsupported")) {
-                    index += 1;
-                } else if (checks[index].equals("requires")) {
+                if (checks[index].equals("requires")) {
                     return checks[index+1];
-                } else if (checks[index].equals("return")) {
-                    index += 2;
-                } else if (checks[index].startsWith("check")) {
-                    index += 3;
-                } else if (checks[index].equals("ifcheck")) {
-                    index += 5;
-                } else if (checks[index].equals("nullAllowed")) {
-                    index += 1;
                 } else {
-                    System.out.println("Error: unknown keyword \"" +
-                                       checks[index] + "\"");
-                    System.exit(0);
+                    index = skipOneCheck(checks, index);
                 }
             }
         }
@@ -345,9 +369,7 @@
                         continue;
                     }
                     out.println(iii + "if (" + remaining + " < " + checks[index + 2] + ") {");
-                    if (emitExceptionCheck) {
-                        out.println(iii + indent + "_exception = 1;");
-                    }
+                    out.println(iii + indent + "_exception = 1;");
                     String exceptionClassName = "java/lang/IllegalArgumentException";
                     // If the "check" keyword was of the form
                     // "check_<class name>", use the class name in the
@@ -361,14 +383,19 @@
                             throw new RuntimeException("unknown exception abbreviation: " + abbr);
                         }
                     }
-                    out.println(iii + indent + "jniThrowException(_env, " +
-                            "\"" + exceptionClassName + "\", " +
-                            "\"" + (isBuffer ? "remaining()" : "length - " + offset) + " < " + checks[index + 2] + "\");");
+                    out.println(iii + indent +
+                                "_exceptionType = \""+exceptionClassName+"\";");
+                    out.println(iii + indent +
+                               "_exceptionMessage = \"" +
+                               (isBuffer ? "remaining()" : "length - " +
+                               offset) + " < " + checks[index + 2] +
+                               " < needed\";");
 
                     out.println(iii + indent + "goto exit;");
-                    needsExit = true;
                     out.println(iii + "}");
 
+                    needsExit = true;
+
                     index += 3;
                 } else if (checks[index].equals("ifcheck")) {
                     String[] matches = checks[index + 4].split(",");
@@ -388,21 +415,8 @@
 
                     lastWasIfcheck = true;
                     index += 5;
-                } else if (checks[index].equals("return")) {
-                    // ignore
-                    index += 2;
-                } else if (checks[index].equals("unsupported")) {
-                    // ignore
-                    index += 1;
-                } else if (checks[index].equals("requires")) {
-                    // ignore
-                    index += 2;
-                } else if (checks[index].equals("nullAllowed")) {
-                    // ignore
-                    index += 1;
                 } else {
-                    System.out.println("Error: unknown keyword \"" + checks[index] + "\"");
-                    System.exit(0);
+                    index = skipOneCheck(checks, index);
                 }
             }
         }
@@ -412,6 +426,69 @@
         }
     }
 
+    void emitSentinelCheck(CFunc cfunc, String cname, PrintStream out,
+            boolean isBuffer, boolean emitExceptionCheck, String offset, String remaining, String iii) {
+
+        String[] checks = mChecker.getChecks(cfunc.getName());
+
+        int index = 1;
+        if (checks != null) {
+            while (index < checks.length) {
+                if (checks[index].startsWith("sentinel")) {
+                    if (cname != null && !cname.equals(checks[index + 1])) {
+                        index += 3;
+                        continue;
+                    }
+
+                    out.println(iii + cname + "_sentinel = false;");
+                    out.println(iii + "for (int i = " + remaining +
+                                " - 1; i >= 0; i--)  {");
+                    out.println(iii + indent + "if (" + cname +
+                                "[i] == " + checks[index + 2] + "){");
+                    out.println(iii + indent + indent +
+                                cname + "_sentinel = true;");
+                    out.println(iii + indent + indent + "break;");
+                    out.println(iii + indent + "}");
+                    out.println(iii + "}");
+                    out.println(iii +
+                                "if (" + cname + "_sentinel == false) {");
+                    out.println(iii + indent + "_exception = 1;");
+                    out.println(iii + indent +
+                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                    out.println(iii + indent + "_exceptionMessage = \"" + cname +
+                                " must contain " + checks[index + 2] + "!\";");
+                    out.println(iii + indent + "goto exit;");
+                    out.println(iii + "}");
+
+                    needsExit = true;
+                    index += 3;
+                } else {
+                    index = skipOneCheck(checks, index);
+                }
+            }
+        }
+    }
+
+    void emitLocalVariablesForSentinel(CFunc cfunc, PrintStream out) {
+
+        String[] checks = mChecker.getChecks(cfunc.getName());
+
+        int index = 1;
+        if (checks != null) {
+            while (index < checks.length) {
+                if (checks[index].startsWith("sentinel")) {
+                    String cname = checks[index + 1];
+                    out.println(indent + "bool " + cname + "_sentinel = false;");
+
+                    index += 3;
+
+                } else {
+                    index = skipOneCheck(checks, index);
+                }
+            }
+        }
+    }
+
     boolean hasNonConstArg(JFunc jfunc, CFunc cfunc, List<Integer> nonPrimitiveArgs) {
         if (nonPrimitiveArgs.size() > 0) {
             for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
@@ -638,7 +715,7 @@
                 return "j" + baseType;
             }
         } else if (jType.isArray()) {
-            return "j" + baseType + "Array";
+            return jType.isClass() ? "jobjectArray" : "j" + baseType + "Array";
         } else {
             return "jobject";
         }
@@ -698,8 +775,10 @@
 
         // Append signature to function name
         String sig = getJniMangledName(signature).replace('.', '_').replace('/', '_');
-        out.print("__" + sig);
-        outName += "__" + sig;
+        if (!mUseSimpleMethodNames) {
+            out.print("__" + sig);
+            outName += "__" + sig;
+        }
 
         signature = signature.replace('.', '/');
         rsignature = rsignature.replace('.', '/');
@@ -734,11 +813,11 @@
         for (int i = 0; i < numArgs; i++) {
             out.print(", ");
             JType argType = jfunc.getArgType(i);
-            String suffix;
+            String suffix = "";
             if (!argType.isPrimitive()) {
                 if (argType.isArray()) {
                     suffix = "_ref";
-                } else {
+                } else if (argType.isBuffer()) {
                     suffix = "_buf";
                 }
                 nonPrimitiveArgs.add(new Integer(i));
@@ -748,9 +827,8 @@
                     bufferArgNames.add(cname);
                     numBufferArgs++;
                 }
-            } else {
-                suffix = "";
             }
+
             if (argType.isString()) {
                 stringArgs.add(new Integer(i));
             }
@@ -801,7 +879,14 @@
                         "    \"" + cfunc.getName() + "\");");
             if (!isVoid) {
                 String retval = getErrorReturnValue(cfunc);
-                out.println(indent + "return " + retval + ";");
+                if (cfunc.getType().isEGLHandle()) {
+                    String baseType = cfunc.getType().getBaseType().toLowerCase();
+                    out.println(indent +
+                                "return toEGLHandle(_env, " + baseType + "Class, " +
+                                baseType + "Constructor, " + retval + ");");
+                } else {
+                    out.println(indent + "return " + retval + ";");
+                }
             }
             out.println("}");
             out.println();
@@ -820,7 +905,14 @@
                 out.println(indent + indent + "    return;");
             } else {
                 String retval = getErrorReturnValue(cfunc);
-                out.println(indent + indent + "    return " + retval + ";");
+                if (cfunc.getType().isEGLHandle()) {
+                    String baseType = cfunc.getType().getBaseType().toLowerCase();
+                    out.println(indent +
+                                "return toEGLHandle(_env, " + baseType + "Class, " +
+                                baseType + "Constructor, " + retval + ");");
+                } else {
+                    out.println(indent + "return " + retval + ";");
+                }
             }
             out.println(indent + "}");
         }
@@ -830,23 +922,30 @@
         }
 
         boolean initializeReturnValue = stringArgs.size() > 0;
-
-        boolean emitExceptionCheck = (numArrays > 0 || numBuffers > 0 || numStrings > 0) &&
-            hasNonConstArg(jfunc, cfunc, nonPrimitiveArgs);
+        boolean emitExceptionCheck = ((numArrays > 0 || numStrings > 0)
+                                             && (hasNonConstArg(jfunc, cfunc, nonPrimitiveArgs)
+                                                 || (cfunc.hasPointerArg() && numArrays > 0))
+                                         || hasCheckTest(cfunc)
+                                         || hasIfTest(cfunc))
+                                         || (stringArgs.size() > 0);
         // mChecker.getChecks(cfunc.getName()) != null
-
         // Emit an _exeption variable if there will be error checks
         if (emitExceptionCheck) {
             out.println(indent + "jint _exception = 0;");
+            out.println(indent + "const char * _exceptionType;");
+            out.println(indent + "const char * _exceptionMessage;");
         }
 
         // Emit a single _array or multiple _XXXArray variables
         if (numBufferArgs == 1) {
                 out.println(indent + "jarray _array = (jarray) 0;");
+                out.println(indent + "jint _bufferOffset = (jint) 0;");
         } else {
             for (int i = 0; i < numBufferArgs; i++) {
                 out.println(indent + "jarray _" + bufferArgNames.get(i) +
                             "Array = (jarray) 0;");
+                out.println(indent + "jint _" + bufferArgNames.get(i) +
+                            "BufferOffset = (jint) 0;");
             }
         }
         if (!isVoid) {
@@ -856,13 +955,49 @@
                             " _returnValue = " + retval + ";");
             } else if (initializeReturnValue) {
                 out.println(indent + returnType.getDeclaration() +
-                " _returnValue = 0;");
+                            " _returnValue = 0;");
             } else {
                 out.println(indent + returnType.getDeclaration() +
                             " _returnValue;");
             }
         }
 
+        // Emit local variable declarations for EGL Handles
+        //
+        // Example:
+        //
+        // EGLSurface surface_native = (EGLHandle)fromEGLHandle(_env, surfaceClass, surfaceConstructor, surface);
+        //
+        if (nonPrimitiveArgs.size() > 0) {
+            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
+                int idx = nonPrimitiveArgs.get(i).intValue();
+                int cIndex = jfunc.getArgCIndex(idx);
+                String cname = cfunc.getArgName(cIndex);
+
+                if (jfunc.getArgType(idx).isBuffer()
+                   || jfunc.getArgType(idx).isArray()
+                   || !jfunc.getArgType(idx).isEGLHandle())
+                    continue;
+
+                CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
+                String decl = type.getDeclaration();
+                out.println(indent +
+                            decl + " " + cname + "_native = (" +
+                            decl + ") fromEGLHandle(_env, " +
+                            type.getBaseType().toLowerCase() +
+                            "GetHandleID, " + jfunc.getArgName(idx) +
+                            ");");
+            }
+        }
+
+        // Emit local variable declarations for element/sentinel checks
+        //
+        // Example:
+        //
+        // bool attrib_list_sentinel_found = false;
+        //
+        emitLocalVariablesForSentinel(cfunc, out);
+
         // Emit local variable declarations for pointer arguments
         //
         // Example:
@@ -878,9 +1013,12 @@
                 int cIndex = jfunc.getArgCIndex(idx);
                 String cname = cfunc.getArgName(cIndex);
 
+                if (!jfunc.getArgType(idx).isBuffer() && !jfunc.getArgType(idx).isArray())
+                    continue;
+
                 CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
                 String decl = type.getDeclaration();
-                if (jfunc.getArgType(idx).isArray()) {
+                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
                     out.println(indent +
                                 decl +
                                 (decl.endsWith("*") ? "" : " ") +
@@ -892,10 +1030,10 @@
                 out.println(indent +
                             "jint " + remaining + ";");
                 out.println(indent +
-                            decl +
-                            (decl.endsWith("*") ? "" : " ") +
-                            jfunc.getArgName(idx) +
-                            " = (" + decl + ") 0;");
+                                decl +
+                                (decl.endsWith("*") ? "" : " ") +
+                                jfunc.getArgName(idx) +
+                                " = (" + decl + ") 0;");
             }
 
             out.println();
@@ -923,11 +1061,13 @@
 
                 CType type = cfunc.getArgType(jfunc.getArgCIndex(idx));
                 String decl = type.getDeclaration();
-                out.println(indent + "if (!" + cname + ") {");
-                out.println(indent + "    jniThrowException(_env, " +
-                        "\"java/lang/IllegalArgumentException\", \"" + cname + " == null\");");
-                out.println(indent + "    goto exit;");
                 needsExit = true;
+                out.println(indent + "if (!" + cname + ") {");
+                out.println(indent + indent +
+                            "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                out.println(indent + indent +
+                            "_exceptionMessage = \"" + cname + " == null\";");
+                out.println(indent + indent + "goto exit;");
                 out.println(indent + "}");
 
                 out.println(indent + "_native" + cname + " = _env->GetStringUTFChars(" + cname + ", 0);");
@@ -936,9 +1076,8 @@
             out.println();
         }
 
-        // Emit 'GetPrimitiveArrayCritical' for arrays
+        // Emit 'GetPrimitiveArrayCritical' for non-object arrays
         // Emit 'GetPointer' calls for Buffer pointers
-        int bufArgIdx = 0;
         if (nonPrimitiveArgs.size() > 0) {
             for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
                 int idx = nonPrimitiveArgs.get(i).intValue();
@@ -950,29 +1089,24 @@
                 remaining = ((numArrays + numBuffers) <= 1) ? "_remaining" :
                     "_" + cname + "Remaining";
 
-                if (jfunc.getArgType(idx).isArray()) {
-                    out.println(indent +
-                                "if (!" +
-                                cname +
-                                "_ref) {");
-                    if (emitExceptionCheck) {
-                        out.println(indent + indent + "_exception = 1;");
-                    }
-                    out.println(indent + "    jniThrowException(_env, " +
-                            "\"java/lang/IllegalArgumentException\", " +
-                            "\"" + cname + " == null\");");
-                    out.println(indent + "    goto exit;");
+                if (jfunc.getArgType(idx).isArray()
+                       && !jfunc.getArgType(idx).isEGLHandle()) {
                     needsExit = true;
+                    out.println(indent + "if (!" + cname + "_ref) {");
+                    out.println(indent + indent + "_exception = 1;");
+                    out.println(indent + indent +
+                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                    out.println(indent + indent +
+                                "_exceptionMessage = \"" + cname +" == null\";");
+                    out.println(indent + indent + "goto exit;");
                     out.println(indent + "}");
-
                     out.println(indent + "if (" + offset + " < 0) {");
-                    if (emitExceptionCheck) {
-                        out.println(indent + indent + "_exception = 1;");
-                    }
-                    out.println(indent + "    jniThrowException(_env, " +
-                            "\"java/lang/IllegalArgumentException\", \"" + offset + " < 0\");");
-                    out.println(indent + "    goto exit;");
-                    needsExit = true;
+                    out.println(indent + indent + "_exception = 1;");
+                    out.println(indent + indent +
+                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                    out.println(indent + indent +
+                                "_exceptionMessage = \"" + offset +" < 0\";");
+                    out.println(indent + indent + "goto exit;");
                     out.println(indent + "}");
 
                     out.println(indent + remaining + " = " +
@@ -997,12 +1131,48 @@
                                 jfunc.getArgName(idx) +
                                 "_ref, (jboolean *)0);");
                     out.println(indent +
-                                cname + " = " + cname + "_base + " + offset +
-                                ";");
+                                cname + " = " + cname + "_base + " + offset + ";");
+
+                    emitSentinelCheck(cfunc, cname, out, false,
+                                      emitExceptionCheck, offset,
+                                      remaining, indent);
                     out.println();
-                } else {
+                } else if (jfunc.getArgType(idx).isArray()
+                              && jfunc.getArgType(idx).isEGLHandle()) {
+                    needsExit = true;
+                    out.println(indent + "if (!" + cname + "_ref) {");
+                    out.println(indent + indent + "_exception = 1;");
+                    out.println(indent + indent +
+                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                    out.println(indent + indent + "_exceptionMessage = \"" + cname +" == null\";");
+                    out.println(indent + indent + "goto exit;");
+                    out.println(indent + "}");
+                    out.println(indent + "if (" + offset + " < 0) {");
+                    out.println(indent + indent + "_exception = 1;");
+                    out.println(indent + indent +
+                                "_exceptionType = \"java/lang/IllegalArgumentException\";");
+                    out.println(indent + indent + "_exceptionMessage = \"" + offset +" < 0\";");
+                    out.println(indent + indent + "goto exit;");
+                    out.println(indent + "}");
+
+                    out.println(indent + remaining + " = " +
+                                    (mUseCPlusPlus ? "_env" : "(*_env)") +
+                                    "->GetArrayLength(" +
+                                    (mUseCPlusPlus ? "" : "_env, ") +
+                                    cname + "_ref) - " + offset + ";");
+                    emitNativeBoundsChecks(cfunc, cname, out, false,
+                                           emitExceptionCheck,
+                                           offset, remaining, "    ");
+                    out.println(indent +
+                                jfunc.getArgName(idx) + " = new " +
+                                cfunc.getArgType(cIndex).getBaseType() +
+                               "["+ remaining + "];");
+                    out.println();
+                } else if (jfunc.getArgType(idx).isBuffer()) {
                     String array = numBufferArgs <= 1 ? "_array" :
-                        "_" + bufferArgNames.get(bufArgIdx++) + "Array";
+                        "_" + cfunc.getArgName(cIndex) + "Array";
+                    String bufferOffset = numBufferArgs <= 1 ? "_bufferOffset" :
+                        "_" + cfunc.getArgName(cIndex) + "BufferOffset";
 
                     boolean nullAllowed = isNullAllowed(cfunc) || isPointerFunc;
                     if (nullAllowed) {
@@ -1019,7 +1189,7 @@
                                 cname + "_buf);");
                         String iii = "    ";
                         out.println(iii + indent + "if ( ! " + cname + " ) {");
-                        out.println(iii + iii + indent + "return;");
+                        out.println(iii + indent + indent + "return;");
                         out.println(iii + indent + "}");
                     } else {
                         out.println(indent +
@@ -1028,7 +1198,7 @@
                                     cfunc.getArgType(cIndex).getDeclaration() +
                                     ")getPointer(_env, " +
                                     cname +
-                                    "_buf, &" + array + ", &" + remaining +
+                                    "_buf, &" + array + ", &" + remaining + ", &" + bufferOffset +
                                     ");");
                     }
 
@@ -1043,6 +1213,33 @@
             }
         }
 
+        // Emit 'GetPrimitiveArrayCritical' for pointers if needed
+        if (nonPrimitiveArgs.size() > 0) {
+            for (int i = 0; i < nonPrimitiveArgs.size(); i++) {
+                int idx = nonPrimitiveArgs.get(i).intValue();
+                int cIndex = jfunc.getArgCIndex(idx);
+
+                if(!jfunc.getArgType(idx).isBuffer() || isPointerFunc) continue;
+
+                String cname = cfunc.getArgName(cIndex);
+                String bufferOffset = numBufferArgs <= 1 ? "_bufferOffset" :
+                            "_" + cname + "BufferOffset";
+                String array = numBufferArgs <= 1 ? "_array" :
+                            "_" + cfunc.getArgName(cIndex) + "Array";
+
+                boolean nullAllowed = isNullAllowed(cfunc) || isPointerFunc;
+                if (nullAllowed) {
+                    out.println(indent + "if (" + cname + "_buf && " + cname +" == NULL) {");
+                } else {
+                    out.println(indent + "if (" + cname +" == NULL) {");
+                }
+                out.println(indent + indent + "char * _" + cname + "Base = (char *)_env->GetPrimitiveArrayCritical(" + array + ", (jboolean *) 0);");
+                out.println(indent + indent + cname + " = (" +cfunc.getArgType(cIndex).getDeclaration() +") (_" + cname + "Base + " + bufferOffset + ");");
+                out.println(indent + "}");
+             }
+        }
+
+
         if (!isVoid) {
             out.print(indent + "_returnValue = ");
         } else {
@@ -1075,18 +1272,23 @@
             for (int i = 0; i < numArgs; i++) {
                 String typecast;
                 if (i == numArgs - 1 && isVBOPointerFunc) {
-                    typecast = "const GLvoid *";
+                    typecast = "(const GLvoid *)";
                 } else {
-                    typecast = cfunc.getArgType(i).getDeclaration();
+                    typecast = "(" + cfunc.getArgType(i).getDeclaration() + ")";
                 }
                 out.print(indent + indent +
-                          "(" +
-                          typecast +
-                          ")");
+                          typecast);
+
                 if (cfunc.getArgType(i).isConstCharPointer()) {
                     out.print("_native");
                 }
-                out.print(cfunc.getArgName(i));
+
+                if (cfunc.getArgType(i).isEGLHandle() &&
+                    !cfunc.getArgType(i).isPointer()){
+                    out.print(cfunc.getArgName(i)+"_native");
+                } else {
+                    out.print(cfunc.getArgName(i));
+                }
 
                 if (i == numArgs - 1) {
                     if (isPointerFunc) {
@@ -1108,13 +1310,13 @@
             needsExit = false;
         }
 
-        bufArgIdx = 0;
+
         if (nonPrimitiveArgs.size() > 0) {
             for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
                 int idx = nonPrimitiveArgs.get(i).intValue();
 
                 int cIndex = jfunc.getArgCIndex(idx);
-                if (jfunc.getArgType(idx).isArray()) {
+                if (jfunc.getArgType(idx).isArray() && !jfunc.getArgType(idx).isClass()) {
 
                     // If the argument is 'const', GL will not write to it.
                     // In this case, we can use the 'JNI_ABORT' flag to avoid
@@ -1130,22 +1332,21 @@
                                 "_base,");
                     out.println(indent + indent + indent +
                                 (cfunc.getArgType(cIndex).isConst() ?
-                                 "JNI_ABORT" :
-                                 "_exception ? JNI_ABORT: 0") +
+                                 "JNI_ABORT" : "_exception ? JNI_ABORT: 0" ) +
                                 ");");
                     out.println(indent + "}");
                 } else if (jfunc.getArgType(idx).isBuffer()) {
                     if (! isPointerFunc) {
                         String array = numBufferArgs <= 1 ? "_array" :
-                            "_" + bufferArgNames.get(bufArgIdx++) + "Array";
+                            "_" + cfunc.getArgName(cIndex) + "Array";
                         out.println(indent + "if (" + array + ") {");
                         out.println(indent + indent +
                                     "releasePointer(_env, " + array + ", " +
                                     cfunc.getArgName(cIndex) +
                                     ", " +
                                     (cfunc.getArgType(cIndex).isConst() ?
-                                     "JNI_FALSE" : "_exception ? JNI_FALSE :" +
-                                             " JNI_TRUE") +
+                                     "JNI_FALSE" : (emitExceptionCheck ?
+                                     "_exception ? JNI_FALSE : JNI_TRUE" : "JNI_TRUE")) +
                                     ");");
                         out.println(indent + "}");
                     }
@@ -1168,9 +1369,60 @@
             out.println();
         }
 
+        // Copy results back to java arrays
+       if (nonPrimitiveArgs.size() > 0) {
+            for (int i = nonPrimitiveArgs.size() - 1; i >= 0; i--) {
+                int idx = nonPrimitiveArgs.get(i).intValue();
+                int cIndex = jfunc.getArgCIndex(idx);
+                String baseType = cfunc.getArgType(cIndex).getBaseType().toLowerCase();
+                if (jfunc.getArgType(idx).isArray() && jfunc.getArgType(idx).isClass()) {
+                    remaining  = ((numArrays + numBuffers) <= 1) ? "_remaining" :
+                                     "_" + cfunc.getArgName(cIndex) + "Remaining";
+                    offset = numArrays <= 1 ? "offset" : cfunc.getArgName(cIndex) + "Offset";
+                    out.println(indent +
+                                "if (" + jfunc.getArgName(idx) + ") {");
+                    out.println(indent + indent +
+                                "for (int i = 0; i < " + remaining + "; i++) {");
+                    out.println(indent + indent + indent +
+                                "jobject " + cfunc.getArgName(cIndex) +
+                                "_new = toEGLHandle(_env, " + baseType +
+                                "Class, " + baseType + "Constructor, " +
+                                cfunc.getArgName(cIndex) + "[i]);");
+                    out.println(indent + indent + indent +
+                                (mUseCPlusPlus ? "_env" : "(*_env)") +
+                                "->SetObjectArrayElement(" +
+                                (mUseCPlusPlus ? "" : "_env, ") +
+                                cfunc.getArgName(cIndex) +
+                                "_ref, i + " + offset + ", " +
+                                cfunc.getArgName(cIndex) + "_new);");
+                    out.println(indent + indent + "}");
+                    out.println(indent + indent +
+                                "delete[] " + jfunc.getArgName(idx) + ";");
+                    out.println(indent + "}");
+                }
+            }
+        }
+
+
+        // Throw exception if there is one
+        if (emitExceptionCheck) {
+            out.println(indent + "if (_exception) {");
+            out.println(indent + indent +
+                        "jniThrowException(_env, _exceptionType, _exceptionMessage);");
+            out.println(indent + "}");
+
+        }
+
 
         if (!isVoid) {
-            out.println(indent + "return _returnValue;");
+            if (cfunc.getType().isEGLHandle()) {
+                String baseType = cfunc.getType().getBaseType().toLowerCase();
+                out.println(indent +
+                            "return toEGLHandle(_env, " + baseType + "Class, " +
+                            baseType + "Constructor, _returnValue);");
+            } else {
+                out.println(indent + "return _returnValue;");
+            }
         }
 
         out.println("}");
diff --git a/opengl/tools/glgen/static/egl/EGLConfig.java b/opengl/tools/glgen/static/egl/EGLConfig.java
new file mode 100644
index 0000000..d457c9f
--- /dev/null
+++ b/opengl/tools/glgen/static/egl/EGLConfig.java
@@ -0,0 +1,37 @@
+/*
+**
+** Copyright 2012, 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.
+*/
+
+package android.opengl;
+
+/**
+ * Wrapper class for native EGLConfig objects.
+ *
+ */
+public class EGLConfig extends EGLObjectHandle {
+    private EGLConfig(int handle) {
+        super(handle);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EGLConfig that = (EGLConfig) o;
+        return getHandle() == that.getHandle();
+    }
+}
diff --git a/opengl/tools/glgen/static/egl/EGLContext.java b/opengl/tools/glgen/static/egl/EGLContext.java
new file mode 100644
index 0000000..41b8ef1
--- /dev/null
+++ b/opengl/tools/glgen/static/egl/EGLContext.java
@@ -0,0 +1,37 @@
+/*
+**
+** Copyright 2012, 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.
+*/
+
+package android.opengl;
+
+/**
+ * Wrapper class for native EGLContext objects.
+ *
+ */
+public class EGLContext extends EGLObjectHandle {
+    private EGLContext(int handle) {
+        super(handle);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EGLContext that = (EGLContext) o;
+        return getHandle() == that.getHandle();
+    }
+}
diff --git a/opengl/tools/glgen/static/egl/EGLDisplay.java b/opengl/tools/glgen/static/egl/EGLDisplay.java
new file mode 100644
index 0000000..17d1a64
--- /dev/null
+++ b/opengl/tools/glgen/static/egl/EGLDisplay.java
@@ -0,0 +1,37 @@
+/*
+**
+** Copyright 2012, 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.
+*/
+
+package android.opengl;
+
+/**
+ * Wrapper class for native EGLDisplay objects.
+ *
+ */
+public class EGLDisplay extends EGLObjectHandle {
+    private EGLDisplay(int handle) {
+        super(handle);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EGLDisplay that = (EGLDisplay) o;
+        return getHandle() == that.getHandle();
+    }
+}
diff --git a/opengl/tools/glgen/static/egl/EGLObjectHandle.java b/opengl/tools/glgen/static/egl/EGLObjectHandle.java
new file mode 100644
index 0000000..d2710de
--- /dev/null
+++ b/opengl/tools/glgen/static/egl/EGLObjectHandle.java
@@ -0,0 +1,47 @@
+/*
+**
+** Copyright 2012, 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.
+*/
+
+package android.opengl;
+
+/**
+ * Base class for wrapped EGL objects.
+ *
+ */
+public abstract class EGLObjectHandle {
+    private final int mHandle;
+
+    protected EGLObjectHandle(int handle) {
+        mHandle = handle;
+    }
+
+    /**
+     * Returns the native handle of the wrapped EGL object. This handle can be
+     * cast to the corresponding native type on the native side.
+     *
+     * For example, EGLDisplay dpy = (EGLDisplay)handle;
+     *
+     * @return the native handle of the wrapped EGL object.
+     */
+    public int getHandle() {
+        return mHandle;
+    }
+
+    @Override
+    public int hashCode() {
+        return getHandle();
+    }
+}
diff --git a/opengl/tools/glgen/static/egl/EGLSurface.java b/opengl/tools/glgen/static/egl/EGLSurface.java
new file mode 100644
index 0000000..65bec4f
--- /dev/null
+++ b/opengl/tools/glgen/static/egl/EGLSurface.java
@@ -0,0 +1,37 @@
+/*
+**
+** Copyright 2012, 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.
+*/
+
+package android.opengl;
+
+/**
+ * Wrapper class for native EGLSurface objects.
+ *
+ */
+public class EGLSurface extends EGLObjectHandle {
+    private EGLSurface(int handle) {
+        super(handle);
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        EGLSurface that = (EGLSurface) o;
+        return getHandle() == that.getHandle();
+    }
+}
diff --git a/opengl/tools/glgen/stubs/egl/EGL14Header.java-if b/opengl/tools/glgen/stubs/egl/EGL14Header.java-if
new file mode 100644
index 0000000..0c29d5c
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/EGL14Header.java-if
@@ -0,0 +1,151 @@
+**
+** Copyright 2012, 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.
+*/
+
+// This source file is automatically generated
+
+package android.opengl;
+
+import android.graphics.SurfaceTexture;
+import android.view.Surface;
+import android.view.SurfaceView;
+import android.view.SurfaceHolder;
+
+/**
+ * EGL 1.4
+ *
+ */
+public class EGL14 {
+
+public static final int EGL_DEFAULT_DISPLAY            = 0;
+public static EGLContext EGL_NO_CONTEXT                = null;
+public static EGLDisplay EGL_NO_DISPLAY                = null;
+public static EGLSurface EGL_NO_SURFACE                = null;
+
+public static final int EGL_FALSE                          = 0;
+public static final int EGL_TRUE                           = 1;
+public static final int EGL_SUCCESS                        = 0x3000;
+public static final int EGL_NOT_INITIALIZED                = 0x3001;
+public static final int EGL_BAD_ACCESS                     = 0x3002;
+public static final int EGL_BAD_ALLOC                      = 0x3003;
+public static final int EGL_BAD_ATTRIBUTE                  = 0x3004;
+public static final int EGL_BAD_CONFIG                     = 0x3005;
+public static final int EGL_BAD_CONTEXT                    = 0x3006;
+public static final int EGL_BAD_CURRENT_SURFACE            = 0x3007;
+public static final int EGL_BAD_DISPLAY                    = 0x3008;
+public static final int EGL_BAD_MATCH                      = 0x3009;
+public static final int EGL_BAD_NATIVE_PIXMAP              = 0x300A;
+public static final int EGL_BAD_NATIVE_WINDOW              = 0x300B;
+public static final int EGL_BAD_PARAMETER                  = 0x300C;
+public static final int EGL_BAD_SURFACE                    = 0x300D;
+public static final int EGL_CONTEXT_LOST                   = 0x300E;
+public static final int EGL_BUFFER_SIZE                    = 0x3020;
+public static final int EGL_ALPHA_SIZE                     = 0x3021;
+public static final int EGL_BLUE_SIZE                      = 0x3022;
+public static final int EGL_GREEN_SIZE                     = 0x3023;
+public static final int EGL_RED_SIZE                       = 0x3024;
+public static final int EGL_DEPTH_SIZE                     = 0x3025;
+public static final int EGL_STENCIL_SIZE                   = 0x3026;
+public static final int EGL_CONFIG_CAVEAT                  = 0x3027;
+public static final int EGL_CONFIG_ID                      = 0x3028;
+public static final int EGL_LEVEL                          = 0x3029;
+public static final int EGL_MAX_PBUFFER_HEIGHT             = 0x302A;
+public static final int EGL_MAX_PBUFFER_PIXELS             = 0x302B;
+public static final int EGL_MAX_PBUFFER_WIDTH              = 0x302C;
+public static final int EGL_NATIVE_RENDERABLE              = 0x302D;
+public static final int EGL_NATIVE_VISUAL_ID               = 0x302E;
+public static final int EGL_NATIVE_VISUAL_TYPE             = 0x302F;
+public static final int EGL_SAMPLES                        = 0x3031;
+public static final int EGL_SAMPLE_BUFFERS                 = 0x3032;
+public static final int EGL_SURFACE_TYPE                   = 0x3033;
+public static final int EGL_TRANSPARENT_TYPE               = 0x3034;
+public static final int EGL_TRANSPARENT_BLUE_VALUE         = 0x3035;
+public static final int EGL_TRANSPARENT_GREEN_VALUE        = 0x3036;
+public static final int EGL_TRANSPARENT_RED_VALUE          = 0x3037;
+public static final int EGL_NONE                           = 0x3038;
+public static final int EGL_BIND_TO_TEXTURE_RGB            = 0x3039;
+public static final int EGL_BIND_TO_TEXTURE_RGBA           = 0x303A;
+public static final int EGL_MIN_SWAP_INTERVAL              = 0x303B;
+public static final int EGL_MAX_SWAP_INTERVAL              = 0x303C;
+public static final int EGL_LUMINANCE_SIZE                 = 0x303D;
+public static final int EGL_ALPHA_MASK_SIZE                = 0x303E;
+public static final int EGL_COLOR_BUFFER_TYPE              = 0x303F;
+public static final int EGL_RENDERABLE_TYPE                = 0x3040;
+public static final int EGL_MATCH_NATIVE_PIXMAP            = 0x3041;
+public static final int EGL_CONFORMANT                     = 0x3042;
+public static final int EGL_SLOW_CONFIG                    = 0x3050;
+public static final int EGL_NON_CONFORMANT_CONFIG          = 0x3051;
+public static final int EGL_TRANSPARENT_RGB                = 0x3052;
+public static final int EGL_RGB_BUFFER                     = 0x308E;
+public static final int EGL_LUMINANCE_BUFFER               = 0x308F;
+public static final int EGL_NO_TEXTURE                     = 0x305C;
+public static final int EGL_TEXTURE_RGB                    = 0x305D;
+public static final int EGL_TEXTURE_RGBA                   = 0x305E;
+public static final int EGL_TEXTURE_2D                     = 0x305F;
+public static final int EGL_PBUFFER_BIT                    = 0x0001;
+public static final int EGL_PIXMAP_BIT                     = 0x0002;
+public static final int EGL_WINDOW_BIT                     = 0x0004;
+public static final int EGL_VG_COLORSPACE_LINEAR_BIT       = 0x0020;
+public static final int EGL_VG_ALPHA_FORMAT_PRE_BIT        = 0x0040;
+public static final int EGL_MULTISAMPLE_RESOLVE_BOX_BIT    = 0x0200;
+public static final int EGL_SWAP_BEHAVIOR_PRESERVED_BIT    = 0x0400;
+public static final int EGL_OPENGL_ES_BIT                  = 0x0001;
+public static final int EGL_OPENVG_BIT                     = 0x0002;
+public static final int EGL_OPENGL_ES2_BIT                 = 0x0004;
+public static final int EGL_OPENGL_BIT                     = 0x0008;
+public static final int EGL_VENDOR                         = 0x3053;
+public static final int EGL_VERSION                        = 0x3054;
+public static final int EGL_EXTENSIONS                     = 0x3055;
+public static final int EGL_CLIENT_APIS                    = 0x308D;
+public static final int EGL_HEIGHT                         = 0x3056;
+public static final int EGL_WIDTH                          = 0x3057;
+public static final int EGL_LARGEST_PBUFFER                = 0x3058;
+public static final int EGL_TEXTURE_FORMAT                 = 0x3080;
+public static final int EGL_TEXTURE_TARGET                 = 0x3081;
+public static final int EGL_MIPMAP_TEXTURE                 = 0x3082;
+public static final int EGL_MIPMAP_LEVEL                   = 0x3083;
+public static final int EGL_RENDER_BUFFER                  = 0x3086;
+public static final int EGL_VG_COLORSPACE                  = 0x3087;
+public static final int EGL_VG_ALPHA_FORMAT                = 0x3088;
+public static final int EGL_HORIZONTAL_RESOLUTION          = 0x3090;
+public static final int EGL_VERTICAL_RESOLUTION            = 0x3091;
+public static final int EGL_PIXEL_ASPECT_RATIO             = 0x3092;
+public static final int EGL_SWAP_BEHAVIOR                  = 0x3093;
+public static final int EGL_MULTISAMPLE_RESOLVE            = 0x3099;
+public static final int EGL_BACK_BUFFER                    = 0x3084;
+public static final int EGL_SINGLE_BUFFER                  = 0x3085;
+public static final int EGL_VG_COLORSPACE_sRGB             = 0x3089;
+public static final int EGL_VG_COLORSPACE_LINEAR           = 0x308A;
+public static final int EGL_VG_ALPHA_FORMAT_NONPRE         = 0x308B;
+public static final int EGL_VG_ALPHA_FORMAT_PRE            = 0x308C;
+public static final int EGL_DISPLAY_SCALING                = 10000;
+public static final int EGL_BUFFER_PRESERVED               = 0x3094;
+public static final int EGL_BUFFER_DESTROYED               = 0x3095;
+public static final int EGL_OPENVG_IMAGE                   = 0x3096;
+public static final int EGL_CONTEXT_CLIENT_TYPE            = 0x3097;
+public static final int EGL_CONTEXT_CLIENT_VERSION         = 0x3098;
+public static final int EGL_MULTISAMPLE_RESOLVE_DEFAULT    = 0x309A;
+public static final int EGL_MULTISAMPLE_RESOLVE_BOX        = 0x309B;
+public static final int EGL_OPENGL_ES_API                  = 0x30A0;
+public static final int EGL_OPENVG_API                     = 0x30A1;
+public static final int EGL_OPENGL_API                     = 0x30A2;
+public static final int EGL_DRAW                           = 0x3059;
+public static final int EGL_READ                           = 0x305A;
+public static final int EGL_CORE_NATIVE_ENGINE             = 0x305B;
+
+    native private static void _nativeClassInit();
+    static {
+        _nativeClassInit();
+    }
diff --git a/opengl/tools/glgen/stubs/egl/EGL14cHeader.cpp b/opengl/tools/glgen/stubs/egl/EGL14cHeader.cpp
new file mode 100644
index 0000000..7904ac7
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/EGL14cHeader.cpp
@@ -0,0 +1,132 @@
+**
+** Copyright 2012, 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.
+*/
+
+// This source file is automatically generated
+
+#include "jni.h"
+#include "JNIHelp.h"
+#include <android_runtime/AndroidRuntime.h>
+#include <android_runtime/android_view_Surface.h>
+#include <android_runtime/android_graphics_SurfaceTexture.h>
+#include <utils/misc.h>
+
+#include <assert.h>
+#include <EGL/egl.h>
+
+#include <gui/Surface.h>
+#include <gui/SurfaceTexture.h>
+#include <gui/SurfaceTextureClient.h>
+
+#include <ui/ANativeObjectBase.h>
+
+static int initialized = 0;
+
+static jclass egldisplayClass;
+static jclass eglcontextClass;
+static jclass eglsurfaceClass;
+static jclass eglconfigClass;
+
+static jmethodID egldisplayGetHandleID;
+static jmethodID eglcontextGetHandleID;
+static jmethodID eglsurfaceGetHandleID;
+static jmethodID eglconfigGetHandleID;
+
+static jmethodID egldisplayConstructor;
+static jmethodID eglcontextConstructor;
+static jmethodID eglsurfaceConstructor;
+static jmethodID eglconfigConstructor;
+
+static jobject eglNoContextObject;
+static jobject eglNoDisplayObject;
+static jobject eglNoSurfaceObject;
+
+
+
+/* Cache method IDs each time the class is loaded. */
+
+static void
+nativeClassInit(JNIEnv *_env, jclass glImplClass)
+{
+    jclass egldisplayClassLocal = _env->FindClass("android/opengl/EGLDisplay");
+    egldisplayClass = (jclass) _env->NewGlobalRef(egldisplayClassLocal);
+    jclass eglcontextClassLocal = _env->FindClass("android/opengl/EGLContext");
+    eglcontextClass = (jclass) _env->NewGlobalRef(eglcontextClassLocal);
+    jclass eglsurfaceClassLocal = _env->FindClass("android/opengl/EGLSurface");
+    eglsurfaceClass = (jclass) _env->NewGlobalRef(eglsurfaceClassLocal);
+    jclass eglconfigClassLocal = _env->FindClass("android/opengl/EGLConfig");
+    eglconfigClass = (jclass) _env->NewGlobalRef(eglconfigClassLocal);
+
+    egldisplayGetHandleID = _env->GetMethodID(egldisplayClass, "getHandle", "()I");
+    eglcontextGetHandleID = _env->GetMethodID(eglcontextClass, "getHandle", "()I");
+    eglsurfaceGetHandleID = _env->GetMethodID(eglsurfaceClass, "getHandle", "()I");
+    eglconfigGetHandleID = _env->GetMethodID(eglconfigClass, "getHandle", "()I");
+
+
+    egldisplayConstructor = _env->GetMethodID(egldisplayClass, "<init>", "(I)V");
+    eglcontextConstructor = _env->GetMethodID(eglcontextClass, "<init>", "(I)V");
+    eglsurfaceConstructor = _env->GetMethodID(eglsurfaceClass, "<init>", "(I)V");
+    eglconfigConstructor = _env->GetMethodID(eglconfigClass, "<init>", "(I)V");
+
+    jobject localeglNoContextObject = _env->NewObject(eglcontextClass, eglcontextConstructor, (jint)EGL_NO_CONTEXT);
+    eglNoContextObject = _env->NewGlobalRef(localeglNoContextObject);
+    jobject localeglNoDisplayObject = _env->NewObject(egldisplayClass, egldisplayConstructor, (jint)EGL_NO_DISPLAY);
+    eglNoDisplayObject = _env->NewGlobalRef(localeglNoDisplayObject);
+    jobject localeglNoSurfaceObject = _env->NewObject(eglsurfaceClass, eglsurfaceConstructor, (jint)EGL_NO_SURFACE);
+    eglNoSurfaceObject = _env->NewGlobalRef(localeglNoSurfaceObject);
+
+
+    jclass eglClass = _env->FindClass("android/opengl/EGL14");
+    jfieldID noContextFieldID = _env->GetStaticFieldID(eglClass, "EGL_NO_CONTEXT", "Landroid/opengl/EGLContext;");
+    _env->SetStaticObjectField(eglClass, noContextFieldID, eglNoContextObject);
+
+    jfieldID noDisplayFieldID = _env->GetStaticFieldID(eglClass, "EGL_NO_DISPLAY", "Landroid/opengl/EGLDisplay;");
+    _env->SetStaticObjectField(eglClass, noDisplayFieldID, eglNoDisplayObject);
+
+    jfieldID noSurfaceFieldID = _env->GetStaticFieldID(eglClass, "EGL_NO_SURFACE", "Landroid/opengl/EGLSurface;");
+    _env->SetStaticObjectField(eglClass, noSurfaceFieldID, eglNoSurfaceObject);
+}
+
+static void *
+fromEGLHandle(JNIEnv *_env, jmethodID mid, jobject obj) {
+    if (obj == NULL){
+        jniThrowException(_env, "java/lang/IllegalArgumentException",
+                          "Object is set to null.");
+    }
+
+    return (void*) (_env->CallIntMethod(obj, mid));
+}
+
+static jobject
+toEGLHandle(JNIEnv *_env, jclass cls, jmethodID con, void * handle) {
+    if (cls == eglcontextClass &&
+       (EGLContext)handle == EGL_NO_CONTEXT) {
+           return eglNoContextObject;
+    }
+
+    if (cls == egldisplayClass &&
+       (EGLDisplay)handle == EGL_NO_DISPLAY) {
+           return eglNoDisplayObject;
+    }
+
+    if (cls == eglsurfaceClass &&
+       (EGLSurface)handle == EGL_NO_SURFACE) {
+           return eglNoSurfaceObject;
+    }
+
+    return _env->NewObject(cls, con, (jint)handle);
+}
+
+// --------------------------------------------------------------------------
diff --git a/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.cpp b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.cpp
new file mode 100644
index 0000000..610cde5
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.cpp
@@ -0,0 +1,154 @@
+/* EGLSurface eglCreateWindowSurface ( EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list ) */
+static jobject
+android_eglCreateWindowSurface
+  (JNIEnv *_env, jobject _this, jobject dpy, jobject config, jobject win, jintArray attrib_list_ref, jint offset) {
+    jint _exception = 0;
+    const char * _exceptionType = "";
+    const char * _exceptionMessage = "";
+    EGLSurface _returnValue = (EGLSurface) 0;
+    EGLDisplay dpy_native = (EGLDisplay) fromEGLHandle(_env, egldisplayGetHandleID, dpy);
+    EGLConfig config_native = (EGLConfig) fromEGLHandle(_env, eglconfigGetHandleID, config);
+    int attrib_list_sentinel = 0;
+    EGLint *attrib_list_base = (EGLint *) 0;
+    jint _remaining;
+    EGLint *attrib_list = (EGLint *) 0;
+    android::sp<ANativeWindow> window;
+
+    if (!attrib_list_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "attrib_list == null";
+        goto exit;
+    }
+    if (offset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "offset < 0";
+        goto exit;
+    }
+    if (win == NULL) {
+not_valid_surface:
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "Make sure the SurfaceView or associated SurfaceHolder has a valid Surface";
+        goto exit;
+    }
+
+    window = android::android_Surface_getNativeWindow(_env, win);
+
+    if (window == NULL)
+        goto not_valid_surface;
+
+    _remaining = _env->GetArrayLength(attrib_list_ref) - offset;
+    attrib_list_base = (EGLint *)
+        _env->GetPrimitiveArrayCritical(attrib_list_ref, (jboolean *)0);
+    attrib_list = attrib_list_base + offset;
+    attrib_list_sentinel = 0;
+    for (int i = _remaining - 1; i >= 0; i--)  {
+        if (*((EGLint*)(attrib_list + i)) == EGL_NONE){
+            attrib_list_sentinel = 1;
+            break;
+        }
+    }
+    if (attrib_list_sentinel == 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "attrib_list must contain EGL_NONE!";
+        goto exit;
+    }
+
+    _returnValue = eglCreateWindowSurface(
+        (EGLDisplay)dpy_native,
+        (EGLConfig)config_native,
+        (EGLNativeWindowType)window.get(),
+        (EGLint *)attrib_list
+    );
+
+exit:
+    if (attrib_list_base) {
+        _env->ReleasePrimitiveArrayCritical(attrib_list_ref, attrib_list_base,
+            JNI_ABORT);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+    return toEGLHandle(_env, eglsurfaceClass, eglsurfaceConstructor, _returnValue);
+}
+
+/* EGLSurface eglCreateWindowSurface ( EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list ) */
+static jobject
+android_eglCreateWindowSurfaceTexture
+  (JNIEnv *_env, jobject _this, jobject dpy, jobject config, jobject win, jintArray attrib_list_ref, jint offset) {
+    jint _exception = 0;
+    const char * _exceptionType = "";
+    const char * _exceptionMessage = "";
+    EGLSurface _returnValue = (EGLSurface) 0;
+    EGLDisplay dpy_native = (EGLDisplay) fromEGLHandle(_env, egldisplayGetHandleID, dpy);
+    EGLConfig config_native = (EGLConfig) fromEGLHandle(_env, eglconfigGetHandleID, config);
+    int attrib_list_sentinel = 0;
+    EGLint *attrib_list_base = (EGLint *) 0;
+    jint _remaining;
+    EGLint *attrib_list = (EGLint *) 0;
+    android::sp<ANativeWindow> window;
+    android::sp<android::SurfaceTexture> surfaceTexture;
+
+    if (!attrib_list_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "attrib_list == null";
+        goto exit;
+    }
+    if (offset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "offset < 0";
+        goto exit;
+    }
+    if (win == NULL) {
+not_valid_surface:
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "Make sure the SurfaceView or associated SurfaceHolder has a valid Surface";
+        goto exit;
+    }
+    surfaceTexture = android::SurfaceTexture_getSurfaceTexture(_env, win);
+    window = new android::SurfaceTextureClient(surfaceTexture);
+
+    if (window == NULL)
+        goto not_valid_surface;
+
+    _remaining = _env->GetArrayLength(attrib_list_ref) - offset;
+    attrib_list_base = (EGLint *)
+        _env->GetPrimitiveArrayCritical(attrib_list_ref, (jboolean *)0);
+    attrib_list = attrib_list_base + offset;
+    attrib_list_sentinel = 0;
+    for (int i = _remaining - 1; i >= 0; i--)  {
+        if (*((EGLint*)(attrib_list + i)) == EGL_NONE){
+            attrib_list_sentinel = 1;
+            break;
+        }
+    }
+    if (attrib_list_sentinel == 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "attrib_list must contain EGL_NONE!";
+        goto exit;
+    }
+
+    _returnValue = eglCreateWindowSurface(
+        (EGLDisplay)dpy_native,
+        (EGLConfig)config_native,
+        (EGLNativeWindowType)window.get(),
+        (EGLint *)attrib_list
+    );
+
+exit:
+    if (attrib_list_base) {
+        _env->ReleasePrimitiveArrayCritical(attrib_list_ref, attrib_list_base,
+            JNI_ABORT);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+    return toEGLHandle(_env, eglsurfaceClass, eglsurfaceConstructor, _returnValue);
+}
diff --git a/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.java b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.java
new file mode 100644
index 0000000..e42334e
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.java
@@ -0,0 +1,48 @@
+    // C function EGLSurface eglCreateWindowSurface ( EGLDisplay dpy, EGLConfig config, EGLNativeWindowType win, const EGLint *attrib_list )
+
+    private static native EGLSurface _eglCreateWindowSurface(
+        EGLDisplay dpy,
+        EGLConfig config,
+        Object win,
+        int[] attrib_list,
+        int offset
+    );
+
+    private static native EGLSurface _eglCreateWindowSurfaceTexture(
+        EGLDisplay dpy,
+        EGLConfig config,
+        Object win,
+        int[] attrib_list,
+        int offset
+    );
+
+    public static EGLSurface eglCreateWindowSurface(EGLDisplay dpy,
+        EGLConfig config,
+        Object win,
+        int[] attrib_list,
+        int offset
+    ){
+        Surface sur = null;
+        if (win instanceof SurfaceView) {
+            SurfaceView surfaceView = (SurfaceView)win;
+            sur = surfaceView.getHolder().getSurface();
+        } else if (win instanceof SurfaceHolder) {
+            SurfaceHolder holder = (SurfaceHolder)win;
+            sur = holder.getSurface();
+        }
+
+        EGLSurface surface;
+        if (sur != null) {
+            surface = _eglCreateWindowSurface(dpy, config, sur, attrib_list, offset);
+        } else if (win instanceof SurfaceTexture) {
+            surface = _eglCreateWindowSurfaceTexture(dpy, config,
+                    win, attrib_list, offset);
+        } else {
+            throw new java.lang.UnsupportedOperationException(
+                "eglCreateWindowSurface() can only be called with an instance of " +
+                "SurfaceView, SurfaceTexture or SurfaceHolder at the moment, " +
+                "this will be fixed later.");
+        }
+
+        return surface;
+    }
diff --git a/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.nativeReg b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.nativeReg
new file mode 100644
index 0000000..c37d05b
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglCreateWindowSurface.nativeReg
@@ -0,0 +1,2 @@
+{"_eglCreateWindowSurface", "(Landroid/opengl/EGLDisplay;Landroid/opengl/EGLConfig;Ljava/lang/Object;[II)Landroid/opengl/EGLSurface;", (void *) android_eglCreateWindowSurface },
+{"_eglCreateWindowSurfaceTexture", "(Landroid/opengl/EGLDisplay;Landroid/opengl/EGLConfig;Ljava/lang/Object;[II)Landroid/opengl/EGLSurface;", (void *) android_eglCreateWindowSurfaceTexture },
diff --git a/opengl/tools/glgen/stubs/egl/eglQueryString.cpp b/opengl/tools/glgen/stubs/egl/eglQueryString.cpp
new file mode 100644
index 0000000..625dad7
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglQueryString.cpp
@@ -0,0 +1,10 @@
+/* const char * eglQueryString ( EGLDisplay dpy, EGLint name ) */
+static jstring
+android_eglQueryString__Landroind_opengl_EGLDisplay_2I
+  (JNIEnv *_env, jobject _this, jobject dpy, jint name) {
+    const char* chars = (const char*) eglQueryString(
+        (EGLDisplay)fromEGLHandle(_env, egldisplayGetHandleID, dpy),
+        (EGLint)name
+    );
+    return _env->NewStringUTF(chars);
+}
diff --git a/opengl/tools/glgen/stubs/egl/eglQueryString.java b/opengl/tools/glgen/stubs/egl/eglQueryString.java
new file mode 100644
index 0000000..f5d5a38
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglQueryString.java
@@ -0,0 +1,6 @@
+    // C function const char * eglQueryString ( EGLDisplay dpy, EGLint name )
+
+    public static native String eglQueryString(
+        EGLDisplay dpy,
+        int name
+    );
diff --git a/opengl/tools/glgen/stubs/egl/eglQueryString.nativeReg b/opengl/tools/glgen/stubs/egl/eglQueryString.nativeReg
new file mode 100644
index 0000000..8276cdb
--- /dev/null
+++ b/opengl/tools/glgen/stubs/egl/eglQueryString.nativeReg
@@ -0,0 +1 @@
+{"eglQueryString", "(Landroid/opengl/EGLDisplay;I)Ljava/lang/String;", (void *) android_eglQueryString__Landroind_opengl_EGLDisplay_2I },
diff --git a/opengl/tools/glgen/stubs/gles11/GLES10ExtcHeader.cpp b/opengl/tools/glgen/stubs/gles11/GLES10ExtcHeader.cpp
index 5d418d7..172c0e7 100644
--- a/opengl/tools/glgen/stubs/gles11/GLES10ExtcHeader.cpp
+++ b/opengl/tools/glgen/stubs/gles11/GLES10ExtcHeader.cpp
@@ -62,14 +62,12 @@
 
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -84,11 +82,10 @@
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
             getBaseArrayID, buffer);
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
 
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 
diff --git a/opengl/tools/glgen/stubs/gles11/GLES10cHeader.cpp b/opengl/tools/glgen/stubs/gles11/GLES10cHeader.cpp
index 35a3c33..4ef815b 100644
--- a/opengl/tools/glgen/stubs/gles11/GLES10cHeader.cpp
+++ b/opengl/tools/glgen/stubs/gles11/GLES10cHeader.cpp
@@ -74,14 +74,12 @@
 }
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -96,11 +94,10 @@
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
             getBaseArrayID, buffer);
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
 
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 static void
diff --git a/opengl/tools/glgen/stubs/gles11/GLES11ExtcHeader.cpp b/opengl/tools/glgen/stubs/gles11/GLES11ExtcHeader.cpp
index 9b29a44..0df95f4 100644
--- a/opengl/tools/glgen/stubs/gles11/GLES11ExtcHeader.cpp
+++ b/opengl/tools/glgen/stubs/gles11/GLES11ExtcHeader.cpp
@@ -71,14 +71,12 @@
 
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -93,11 +91,9 @@
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
             getBaseArrayID, buffer);
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
-
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 
diff --git a/opengl/tools/glgen/stubs/gles11/GLES11cHeader.cpp b/opengl/tools/glgen/stubs/gles11/GLES11cHeader.cpp
index 823079f..dd860d5 100644
--- a/opengl/tools/glgen/stubs/gles11/GLES11cHeader.cpp
+++ b/opengl/tools/glgen/stubs/gles11/GLES11cHeader.cpp
@@ -69,14 +69,12 @@
 
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -91,11 +89,10 @@
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
             getBaseArrayID, buffer);
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
 
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 
diff --git a/opengl/tools/glgen/stubs/gles11/GLES20cHeader.cpp b/opengl/tools/glgen/stubs/gles11/GLES20cHeader.cpp
index 13a2577..996f441 100644
--- a/opengl/tools/glgen/stubs/gles11/GLES20cHeader.cpp
+++ b/opengl/tools/glgen/stubs/gles11/GLES20cHeader.cpp
@@ -62,14 +62,12 @@
 
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -84,11 +82,10 @@
 
     *array = (jarray) _env->CallStaticObjectMethod(nioAccessClass,
             getBaseArrayID, buffer);
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
 
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp
new file mode 100644
index 0000000..27b91fc
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.cpp
@@ -0,0 +1,328 @@
+/* void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static void
+android_glGetActiveAttrib__III_3II_3II_3II_3BI
+  (JNIEnv *_env, jobject _this, jint program, jint index, jint bufsize, jintArray length_ref, jint lengthOffset, jintArray size_ref, jint sizeOffset, jintArray type_ref, jint typeOffset, jbyteArray name_ref, jint nameOffset) {
+    jint _exception = 0;
+    const char * _exceptionType;
+    const char * _exceptionMessage;
+    GLsizei *length_base = (GLsizei *) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    GLint *size_base = (GLint *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    GLenum *type_base = (GLenum *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+    char *name_base = (char *) 0;
+    jint _nameRemaining;
+    char *name = (char *) 0;
+
+    if (!length_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "length == null";
+        goto exit;
+    }
+    if (lengthOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "lengthOffset < 0";
+        goto exit;
+    }
+    _lengthRemaining = _env->GetArrayLength(length_ref) - lengthOffset;
+    length_base = (GLsizei *)
+        _env->GetPrimitiveArrayCritical(length_ref, (jboolean *)0);
+    length = length_base + lengthOffset;
+
+    if (!size_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "size == null";
+        goto exit;
+    }
+    if (sizeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "sizeOffset < 0";
+        goto exit;
+    }
+    _sizeRemaining = _env->GetArrayLength(size_ref) - sizeOffset;
+    size_base = (GLint *)
+        _env->GetPrimitiveArrayCritical(size_ref, (jboolean *)0);
+    size = size_base + sizeOffset;
+
+    if (!type_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "type == null";
+        goto exit;
+    }
+    if (typeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "typeOffset < 0";
+        goto exit;
+    }
+    _typeRemaining = _env->GetArrayLength(type_ref) - typeOffset;
+    type_base = (GLenum *)
+        _env->GetPrimitiveArrayCritical(type_ref, (jboolean *)0);
+    type = type_base + typeOffset;
+
+    if (!name_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "name == null";
+        goto exit;
+    }
+    if (nameOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "nameOffset < 0";
+        goto exit;
+    }
+    _nameRemaining = _env->GetArrayLength(name_ref) - nameOffset;
+    name_base = (char *)
+        _env->GetPrimitiveArrayCritical(name_ref, (jboolean *)0);
+    name = name_base + nameOffset;
+
+    glGetActiveAttrib(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)name
+    );
+
+exit:
+    if (name_base) {
+        _env->ReleasePrimitiveArrayCritical(name_ref, name_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (type_base) {
+        _env->ReleasePrimitiveArrayCritical(type_ref, type_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (size_base) {
+        _env->ReleasePrimitiveArrayCritical(size_ref, size_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (length_base) {
+        _env->ReleasePrimitiveArrayCritical(length_ref, length_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+}
+
+/* void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static void
+android_glGetActiveAttrib__IIILjava_nio_IntBuffer_2Ljava_nio_IntBuffer_2Ljava_nio_IntBuffer_2B
+  (JNIEnv *_env, jobject _this, jint program, jint index, jint bufsize, jobject length_buf, jobject size_buf, jobject type_buf, jbyte name) {
+    jarray _lengthArray = (jarray) 0;
+    jint _lengthBufferOffset = (jint) 0;
+    jarray _sizeArray = (jarray) 0;
+    jint _sizeBufferOffset = (jint) 0;
+    jarray _typeArray = (jarray) 0;
+    jint _typeBufferOffset = (jint) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    length = (GLsizei *)getPointer(_env, length_buf, &_lengthArray, &_lengthRemaining, &_lengthBufferOffset);
+    size = (GLint *)getPointer(_env, size_buf, &_sizeArray, &_sizeRemaining, &_sizeBufferOffset);
+    type = (GLenum *)getPointer(_env, type_buf, &_typeArray, &_typeRemaining, &_typeBufferOffset);
+    if (length == NULL) {
+        char * _lengthBase = (char *)_env->GetPrimitiveArrayCritical(_lengthArray, (jboolean *) 0);
+        length = (GLsizei *) (_lengthBase + _lengthBufferOffset);
+    }
+    if (size == NULL) {
+        char * _sizeBase = (char *)_env->GetPrimitiveArrayCritical(_sizeArray, (jboolean *) 0);
+        size = (GLint *) (_sizeBase + _sizeBufferOffset);
+    }
+    if (type == NULL) {
+        char * _typeBase = (char *)_env->GetPrimitiveArrayCritical(_typeArray, (jboolean *) 0);
+        type = (GLenum *) (_typeBase + _typeBufferOffset);
+    }
+    glGetActiveAttrib(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)name
+    );
+    if (_typeArray) {
+        releasePointer(_env, _typeArray, type, JNI_TRUE);
+    }
+    if (_sizeArray) {
+        releasePointer(_env, _sizeArray, size, JNI_TRUE);
+    }
+    if (_lengthArray) {
+        releasePointer(_env, _lengthArray, length, JNI_TRUE);
+    }
+}
+
+/* void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static jstring
+android_glGetActiveAttrib1
+  (JNIEnv *_env, jobject _this, jint program, jint index, jintArray size_ref, jint sizeOffset, jintArray type_ref, jint typeOffset) {
+    jint _exception = 0;
+    const char * _exceptionType;
+    const char * _exceptionMessage;
+    GLint *size_base = (GLint *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    GLenum *type_base = (GLenum *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    jstring result = 0;
+
+    GLint len = 0;
+    glGetProgramiv((GLuint)program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &len);
+    if (!len) {
+        return _env->NewStringUTF("");
+    }
+    char* buf = (char*) malloc(len);
+
+    if (buf == NULL) {
+        jniThrowException(_env, "java/lang/IllegalArgumentException", "out of memory");
+        return NULL;
+    }
+    if (!size_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "size == null";
+        goto exit;
+    }
+    if (sizeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "sizeOffset < 0";
+        goto exit;
+    }
+    _sizeRemaining = _env->GetArrayLength(size_ref) - sizeOffset;
+    size_base = (GLint *)
+        _env->GetPrimitiveArrayCritical(size_ref, (jboolean *)0);
+    size = size_base + sizeOffset;
+
+    if (!type_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "type == null";
+        goto exit;
+    }
+    if (typeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "typeOffset < 0";
+        goto exit;
+    }
+    _typeRemaining = _env->GetArrayLength(type_ref) - typeOffset;
+    type_base = (GLenum *)
+        _env->GetPrimitiveArrayCritical(type_ref, (jboolean *)0);
+    type = type_base + typeOffset;
+
+    glGetActiveAttrib(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)len,
+        NULL,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)buf
+    );
+exit:
+    if (type_base) {
+        _env->ReleasePrimitiveArrayCritical(type_ref, type_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (size_base) {
+        _env->ReleasePrimitiveArrayCritical(size_ref, size_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (_exception != 1) {
+        result = _env->NewStringUTF(buf);
+    }
+    if (buf) {
+        free(buf);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+    if (result == 0) {
+        result = _env->NewStringUTF("");
+    }
+
+    return result;
+}
+
+/* void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static jstring
+android_glGetActiveAttrib2
+  (JNIEnv *_env, jobject _this, jint program, jint index, jobject size_buf, jobject type_buf) {
+    jarray _sizeArray = (jarray) 0;
+    jint _sizeBufferOffset = (jint) 0;
+    jarray _typeArray = (jarray) 0;
+    jint _typeBufferOffset = (jint) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    jstring result = 0;
+
+    GLint len = 0;
+    glGetProgramiv((GLuint)program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &len);
+    if (!len) {
+        return _env->NewStringUTF("");
+    }
+    char* buf = (char*) malloc(len);
+
+    if (buf == NULL) {
+        jniThrowException(_env, "java/lang/IllegalArgumentException", "out of memory");
+        return NULL;
+    }
+
+    size = (GLint *)getPointer(_env, size_buf, &_sizeArray, &_sizeRemaining, &_sizeBufferOffset);
+    type = (GLenum *)getPointer(_env, type_buf, &_typeArray, &_typeRemaining, &_typeBufferOffset);
+    if (size == NULL) {
+        char * _sizeBase = (char *)_env->GetPrimitiveArrayCritical(_sizeArray, (jboolean *) 0);
+        size = (GLint *) (_sizeBase + _sizeBufferOffset);
+    }
+    if (type == NULL) {
+        char * _typeBase = (char *)_env->GetPrimitiveArrayCritical(_typeArray, (jboolean *) 0);
+        type = (GLenum *) (_typeBase + _typeBufferOffset);
+    }
+    glGetActiveAttrib(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)len,
+        NULL,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)buf
+    );
+
+    if (_typeArray) {
+        releasePointer(_env, _typeArray, type, JNI_TRUE);
+    }
+    if (_sizeArray) {
+        releasePointer(_env, _sizeArray, size, JNI_TRUE);
+    }
+    result = _env->NewStringUTF(buf);
+    if (buf) {
+        free(buf);
+    }
+    return result;
+}
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.java b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.java
new file mode 100644
index 0000000..bad2137
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.java
@@ -0,0 +1,47 @@
+    // C function void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native void glGetActiveAttrib(
+        int program,
+        int index,
+        int bufsize,
+        int[] length,
+        int lengthOffset,
+        int[] size,
+        int sizeOffset,
+        int[] type,
+        int typeOffset,
+        byte[] name,
+        int nameOffset
+    );
+
+    // C function void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native void glGetActiveAttrib(
+        int program,
+        int index,
+        int bufsize,
+        java.nio.IntBuffer length,
+        java.nio.IntBuffer size,
+        java.nio.IntBuffer type,
+        byte name
+    );
+
+    // C function void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native String glGetActiveAttrib(
+        int program,
+        int index,
+        int[] size,
+        int sizeOffset,
+        int[] type,
+        int typeOffset
+    );
+
+    // C function void glGetActiveAttrib ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native String glGetActiveAttrib(
+        int program,
+        int index,
+        java.nio.IntBuffer size,
+        java.nio.IntBuffer type
+    );
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.nativeReg b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.nativeReg
new file mode 100644
index 0000000..f54c0a0
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveAttrib.nativeReg
@@ -0,0 +1,4 @@
+{"glGetActiveAttrib", "(III[II[II[II[BI)V", (void *) android_glGetActiveAttrib__III_3II_3II_3II_3BI },
+{"glGetActiveAttrib", "(IIILjava/nio/IntBuffer;Ljava/nio/IntBuffer;Ljava/nio/IntBuffer;B)V", (void *) android_glGetActiveAttrib__IIILjava_nio_IntBuffer_2Ljava_nio_IntBuffer_2Ljava_nio_IntBuffer_2B },
+{"glGetActiveAttrib", "(II[II[II)Ljava/lang/String;", (void *) android_glGetActiveAttrib1 },
+{"glGetActiveAttrib", "(IILjava/nio/IntBuffer;Ljava/nio/IntBuffer;)Ljava/lang/String;", (void *) android_glGetActiveAttrib2 },
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp
new file mode 100644
index 0000000..58f704c
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.cpp
@@ -0,0 +1,329 @@
+/* void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static void
+android_glGetActiveUniform__III_3II_3II_3II_3BI
+  (JNIEnv *_env, jobject _this, jint program, jint index, jint bufsize, jintArray length_ref, jint lengthOffset, jintArray size_ref, jint sizeOffset, jintArray type_ref, jint typeOffset, jbyteArray name_ref, jint nameOffset) {
+    jint _exception = 0;
+    const char * _exceptionType;
+    const char * _exceptionMessage;
+    GLsizei *length_base = (GLsizei *) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    GLint *size_base = (GLint *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    GLenum *type_base = (GLenum *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+    char *name_base = (char *) 0;
+    jint _nameRemaining;
+    char *name = (char *) 0;
+
+    if (!length_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "length == null";
+        goto exit;
+    }
+    if (lengthOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "lengthOffset < 0";
+        goto exit;
+    }
+    _lengthRemaining = _env->GetArrayLength(length_ref) - lengthOffset;
+    length_base = (GLsizei *)
+        _env->GetPrimitiveArrayCritical(length_ref, (jboolean *)0);
+    length = length_base + lengthOffset;
+
+    if (!size_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "size == null";
+        goto exit;
+    }
+    if (sizeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "sizeOffset < 0";
+        goto exit;
+    }
+    _sizeRemaining = _env->GetArrayLength(size_ref) - sizeOffset;
+    size_base = (GLint *)
+        _env->GetPrimitiveArrayCritical(size_ref, (jboolean *)0);
+    size = size_base + sizeOffset;
+
+    if (!type_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "type == null";
+        goto exit;
+    }
+    if (typeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "typeOffset < 0";
+        goto exit;
+    }
+    _typeRemaining = _env->GetArrayLength(type_ref) - typeOffset;
+    type_base = (GLenum *)
+        _env->GetPrimitiveArrayCritical(type_ref, (jboolean *)0);
+    type = type_base + typeOffset;
+
+    if (!name_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "name == null";
+        goto exit;
+    }
+    if (nameOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "nameOffset < 0";
+        goto exit;
+    }
+    _nameRemaining = _env->GetArrayLength(name_ref) - nameOffset;
+    name_base = (char *)
+        _env->GetPrimitiveArrayCritical(name_ref, (jboolean *)0);
+    name = name_base + nameOffset;
+
+    glGetActiveUniform(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)name
+    );
+
+exit:
+    if (name_base) {
+        _env->ReleasePrimitiveArrayCritical(name_ref, name_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (type_base) {
+        _env->ReleasePrimitiveArrayCritical(type_ref, type_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (size_base) {
+        _env->ReleasePrimitiveArrayCritical(size_ref, size_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (length_base) {
+        _env->ReleasePrimitiveArrayCritical(length_ref, length_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+}
+
+/* void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static void
+android_glGetActiveUniform__IIILjava_nio_IntBuffer_2Ljava_nio_IntBuffer_2Ljava_nio_IntBuffer_2B
+  (JNIEnv *_env, jobject _this, jint program, jint index, jint bufsize, jobject length_buf, jobject size_buf, jobject type_buf, jbyte name) {
+    jarray _lengthArray = (jarray) 0;
+    jint _lengthBufferOffset = (jint) 0;
+    jarray _sizeArray = (jarray) 0;
+    jint _sizeBufferOffset = (jint) 0;
+    jarray _typeArray = (jarray) 0;
+    jint _typeBufferOffset = (jint) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    length = (GLsizei *)getPointer(_env, length_buf, &_lengthArray, &_lengthRemaining, &_lengthBufferOffset);
+    size = (GLint *)getPointer(_env, size_buf, &_sizeArray, &_sizeRemaining, &_sizeBufferOffset);
+    type = (GLenum *)getPointer(_env, type_buf, &_typeArray, &_typeRemaining, &_typeBufferOffset);
+    if (length == NULL) {
+        char * _lengthBase = (char *)_env->GetPrimitiveArrayCritical(_lengthArray, (jboolean *) 0);
+        length = (GLsizei *) (_lengthBase + _lengthBufferOffset);
+    }
+    if (size == NULL) {
+        char * _sizeBase = (char *)_env->GetPrimitiveArrayCritical(_sizeArray, (jboolean *) 0);
+        size = (GLint *) (_sizeBase + _sizeBufferOffset);
+    }
+    if (type == NULL) {
+        char * _typeBase = (char *)_env->GetPrimitiveArrayCritical(_typeArray, (jboolean *) 0);
+        type = (GLenum *) (_typeBase + _typeBufferOffset);
+    }
+    glGetActiveUniform(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)name
+    );
+    if (_typeArray) {
+        releasePointer(_env, _typeArray, type, JNI_TRUE);
+    }
+    if (_sizeArray) {
+        releasePointer(_env, _sizeArray, size, JNI_TRUE);
+    }
+    if (_lengthArray) {
+        releasePointer(_env, _lengthArray, length, JNI_TRUE);
+    }
+}
+
+/* void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static jstring
+android_glGetActiveUniform1
+  (JNIEnv *_env, jobject _this, jint program, jint index, jintArray size_ref, jint sizeOffset, jintArray type_ref, jint typeOffset) {
+    jint _exception = 0;
+    const char * _exceptionType;
+    const char * _exceptionMessage;
+
+    GLint *size_base = (GLint *) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+
+    GLenum *type_base = (GLenum *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    jstring result = 0;
+
+    GLint len = 0;
+    glGetProgramiv((GLuint)program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &len);
+    if (!len) {
+        return _env->NewStringUTF("");
+    }
+    char* buf = (char*) malloc(len);
+
+    if (buf == NULL) {
+        jniThrowException(_env, "java/lang/IllegalArgumentException", "out of memory");
+        return NULL;
+    }
+
+    if (!size_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "size == null";
+        goto exit;
+    }
+    if (sizeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "sizeOffset < 0";
+        goto exit;
+    }
+    _sizeRemaining = _env->GetArrayLength(size_ref) - sizeOffset;
+    size_base = (GLint *)
+        _env->GetPrimitiveArrayCritical(size_ref, (jboolean *)0);
+    size = size_base + sizeOffset;
+
+    if (!type_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "type == null";
+        goto exit;
+    }
+    if (typeOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "typeOffset < 0";
+        goto exit;
+    }
+    _typeRemaining = _env->GetArrayLength(type_ref) - typeOffset;
+    type_base = (GLenum *)
+        _env->GetPrimitiveArrayCritical(type_ref, (jboolean *)0);
+    type = type_base + typeOffset;
+
+    glGetActiveUniform(
+        (GLuint)program,
+        (GLuint)index,
+        (GLsizei)len,
+        NULL,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)buf
+    );
+
+exit:
+    if (type_base) {
+        _env->ReleasePrimitiveArrayCritical(type_ref, type_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (size_base) {
+        _env->ReleasePrimitiveArrayCritical(size_ref, size_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (_exception != 1) {
+        result = _env->NewStringUTF(buf);
+    }
+    if (buf) {
+        free(buf);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+    if (result == 0) {
+        result = _env->NewStringUTF("");
+    }
+    return result;
+}
+
+/* void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name ) */
+static jstring
+android_glGetActiveUniform2
+  (JNIEnv *_env, jobject _this, jint program, jint index, jobject size_buf, jobject type_buf) {
+    jarray _sizeArray = (jarray) 0;
+    jint _sizeBufferOffset = (jint) 0;
+    jarray _typeArray = (jarray) 0;
+    jint _typeBufferOffset = (jint) 0;
+    jint _sizeRemaining;
+    GLint *size = (GLint *) 0;
+    jint _typeRemaining;
+    GLenum *type = (GLenum *) 0;
+
+    jstring result = 0;
+    GLint len = 0;
+    glGetProgramiv((GLuint)program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &len);
+    if (!len) {
+        return _env->NewStringUTF("");
+    }
+    char* buf = (char*) malloc(len);
+
+    if (buf == NULL) {
+        jniThrowException(_env, "java/lang/IllegalArgumentException", "out of memory");
+        return NULL;
+    }
+
+    size = (GLint *)getPointer(_env, size_buf, &_sizeArray, &_sizeRemaining, &_sizeBufferOffset);
+    type = (GLenum *)getPointer(_env, type_buf, &_typeArray, &_typeRemaining, &_typeBufferOffset);
+
+    if (size == NULL) {
+        char * _sizeBase = (char *)_env->GetPrimitiveArrayCritical(_sizeArray, (jboolean *) 0);
+        size = (GLint *) (_sizeBase + _sizeBufferOffset);
+    }
+    if (type == NULL) {
+        char * _typeBase = (char *)_env->GetPrimitiveArrayCritical(_typeArray, (jboolean *) 0);
+        type = (GLenum *) (_typeBase + _typeBufferOffset);
+    }
+    glGetActiveUniform(
+        (GLuint)program,
+        (GLuint)index,
+        len,
+        NULL,
+        (GLint *)size,
+        (GLenum *)type,
+        (char *)buf
+    );
+
+    if (_typeArray) {
+        releasePointer(_env, _typeArray, type, JNI_TRUE);
+    }
+    if (_sizeArray) {
+        releasePointer(_env, _sizeArray, size, JNI_TRUE);
+    }
+    result = _env->NewStringUTF(buf);
+    if (buf) {
+        free(buf);
+    }
+    return result;
+}
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.java b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.java
new file mode 100644
index 0000000..28aaa78
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.java
@@ -0,0 +1,46 @@
+    // C function void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native void glGetActiveUniform(
+        int program,
+        int index,
+        int bufsize,
+        int[] length,
+        int lengthOffset,
+        int[] size,
+        int sizeOffset,
+        int[] type,
+        int typeOffset,
+        byte[] name,
+        int nameOffset
+    );
+
+    // C function void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native void glGetActiveUniform(
+        int program,
+        int index,
+        int bufsize,
+        java.nio.IntBuffer length,
+        java.nio.IntBuffer size,
+        java.nio.IntBuffer type,
+        byte name
+    );
+    // C function void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native String glGetActiveUniform(
+        int program,
+        int index,
+        int[] size,
+        int sizeOffset,
+        int[] type,
+        int typeOffset
+    );
+
+    // C function void glGetActiveUniform ( GLuint program, GLuint index, GLsizei bufsize, GLsizei *length, GLint *size, GLenum *type, char *name )
+
+    public static native String glGetActiveUniform(
+        int program,
+        int index,
+        java.nio.IntBuffer size,
+        java.nio.IntBuffer type
+    );
diff --git a/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.nativeReg b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.nativeReg
new file mode 100644
index 0000000..f0b5fd9
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetActiveUniform.nativeReg
@@ -0,0 +1,4 @@
+{"glGetActiveUniform", "(III[II[II[II[BI)V", (void *) android_glGetActiveUniform__III_3II_3II_3II_3BI },
+{"glGetActiveUniform", "(II[II[II)Ljava/lang/String;", (void *) android_glGetActiveUniform1 },
+{"glGetActiveUniform", "(IIILjava/nio/IntBuffer;Ljava/nio/IntBuffer;Ljava/nio/IntBuffer;B)V", (void *) android_glGetActiveUniform__IIILjava_nio_IntBuffer_2Ljava_nio_IntBuffer_2Ljava_nio_IntBuffer_2B },
+{"glGetActiveUniform", "(IILjava/nio/IntBuffer;Ljava/nio/IntBuffer;)Ljava/lang/String;", (void *) android_glGetActiveUniform2 },
diff --git a/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp
new file mode 100644
index 0000000..a7e1cd2
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.cpp
@@ -0,0 +1,111 @@
+/* void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source ) */
+static void
+android_glGetShaderSource__II_3II_3BI
+  (JNIEnv *_env, jobject _this, jint shader, jint bufsize, jintArray length_ref, jint lengthOffset, jbyteArray source_ref, jint sourceOffset) {
+    jint _exception = 0;
+    const char * _exceptionType;
+    const char * _exceptionMessage;
+    GLsizei *length_base = (GLsizei *) 0;
+    jint _lengthRemaining;
+    GLsizei *length = (GLsizei *) 0;
+    char *source_base = (char *) 0;
+    jint _sourceRemaining;
+    char *source = (char *) 0;
+
+    if (!length_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "length == null";
+        goto exit;
+    }
+    if (lengthOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "lengthOffset < 0";
+        goto exit;
+    }
+    _lengthRemaining = _env->GetArrayLength(length_ref) - lengthOffset;
+    length_base = (GLsizei *)
+        _env->GetPrimitiveArrayCritical(length_ref, (jboolean *)0);
+    length = length_base + lengthOffset;
+
+    if (!source_ref) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "source == null";
+        goto exit;
+    }
+    if (sourceOffset < 0) {
+        _exception = 1;
+        _exceptionType = "java/lang/IllegalArgumentException";
+        _exceptionMessage = "sourceOffset < 0";
+        goto exit;
+    }
+    _sourceRemaining = _env->GetArrayLength(source_ref) - sourceOffset;
+    source_base = (char *)
+        _env->GetPrimitiveArrayCritical(source_ref, (jboolean *)0);
+    source = source_base + sourceOffset;
+
+    glGetShaderSource(
+        (GLuint)shader,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (char *)source
+    );
+
+exit:
+    if (source_base) {
+        _env->ReleasePrimitiveArrayCritical(source_ref, source_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (length_base) {
+        _env->ReleasePrimitiveArrayCritical(length_ref, length_base,
+            _exception ? JNI_ABORT: 0);
+    }
+    if (_exception) {
+        jniThrowException(_env, _exceptionType, _exceptionMessage);
+    }
+}
+
+/* void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source ) */
+static void
+android_glGetShaderSource__IILjava_nio_IntBuffer_2B
+  (JNIEnv *_env, jobject _this, jint shader, jint bufsize, jobject length_buf, jbyte source) {
+    jarray _array = (jarray) 0;
+    jint _bufferOffset = (jint) 0;
+    jint _remaining;
+    GLsizei *length = (GLsizei *) 0;
+
+    length = (GLsizei *)getPointer(_env, length_buf, &_array, &_remaining, &_bufferOffset);
+    if (length == NULL) {
+        char * _lengthBase = (char *)_env->GetPrimitiveArrayCritical(_array, (jboolean *) 0);
+        length = (GLsizei *) (_lengthBase + _bufferOffset);
+    }
+    glGetShaderSource(
+        (GLuint)shader,
+        (GLsizei)bufsize,
+        (GLsizei *)length,
+        (char *)source
+    );
+    if (_array) {
+        releasePointer(_env, _array, length, JNI_TRUE);
+    }
+}
+
+/* void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source ) */
+static jstring android_glGetShaderSource(JNIEnv *_env, jobject, jint shader) {
+    GLint shaderLen = 0;
+    glGetShaderiv((GLuint)shader, GL_SHADER_SOURCE_LENGTH, &shaderLen);
+    if (!shaderLen) {
+        return _env->NewStringUTF("");
+    }
+    char* buf = (char*) malloc(shaderLen);
+    if (buf == NULL) {
+        jniThrowException(_env, "java/lang/IllegalArgumentException", "out of memory");
+        return NULL;
+    }
+    glGetShaderSource(shader, shaderLen, NULL, buf);
+    jstring result = _env->NewStringUTF(buf);
+    free(buf);
+    return result;
+}
diff --git a/opengl/tools/glgen/stubs/gles11/glGetShaderSource.java b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.java
new file mode 100644
index 0000000..199d93a
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.java
@@ -0,0 +1,25 @@
+    // C function void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source )
+
+    public static native void glGetShaderSource(
+        int shader,
+        int bufsize,
+        int[] length,
+        int lengthOffset,
+        byte[] source,
+        int sourceOffset
+    );
+
+    // C function void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source )
+
+    public static native void glGetShaderSource(
+        int shader,
+        int bufsize,
+        java.nio.IntBuffer length,
+        byte source
+    );
+
+    // C function void glGetShaderSource ( GLuint shader, GLsizei bufsize, GLsizei *length, char *source )
+
+    public static native String glGetShaderSource(
+        int shader
+    );
diff --git a/opengl/tools/glgen/stubs/gles11/glGetShaderSource.nativeReg b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.nativeReg
new file mode 100644
index 0000000..acb47a5
--- /dev/null
+++ b/opengl/tools/glgen/stubs/gles11/glGetShaderSource.nativeReg
@@ -0,0 +1,3 @@
+{"glGetShaderSource", "(II[II[BI)V", (void *) android_glGetShaderSource__II_3II_3BI },
+{"glGetShaderSource", "(IILjava/nio/IntBuffer;B)V", (void *) android_glGetShaderSource__IILjava_nio_IntBuffer_2B },
+{"glGetShaderSource", "(I)Ljava/lang/String;", (void *) android_glGetShaderSource },
diff --git a/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp b/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
index f7315ee..cc10336 100644
--- a/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
+++ b/opengl/tools/glgen/stubs/jsr239/GLCHeader.cpp
@@ -113,14 +113,12 @@
 }
 
 static void *
-getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining)
+getPointer(JNIEnv *_env, jobject buffer, jarray *array, jint *remaining, jint *offset)
 {
     jint position;
     jint limit;
     jint elementSizeShift;
     jlong pointer;
-    jint offset;
-    void *data;
 
     position = _env->GetIntField(buffer, positionID);
     limit = _env->GetIntField(buffer, limitID);
@@ -138,11 +136,10 @@
     if (*array == NULL) {
         return (void*) NULL;
     }
-    offset = _env->CallStaticIntMethod(nioAccessClass,
+    *offset = _env->CallStaticIntMethod(nioAccessClass,
             getBaseArrayOffsetID, buffer);
-    data = _env->GetPrimitiveArrayCritical(*array, (jboolean *) 0);
 
-    return (void *) ((char *) data + offset);
+    return NULL;
 }
 
 static void
@@ -180,10 +177,12 @@
         if (allowIndirectBuffers(_env)) {
             jarray array = 0;
             jint remaining;
-            buf = getPointer(_env, buffer, &array, &remaining);
+            jint offset;
+            buf = getPointer(_env, buffer, &array, &remaining, &offset);
             if (array) {
                 releasePointer(_env, array, buf, 0);
             }
+            buf = buf + offset;
         } else {
             jniThrowException(_env, "java/lang/IllegalArgumentException",
                               "Must use a native order direct Buffer");
diff --git a/opengl/tools/glgen/stubs/jsr239/GLImplHeader.java-impl b/opengl/tools/glgen/stubs/jsr239/GLImplHeader.java-impl
index cd730aa..e3aea76 100644
--- a/opengl/tools/glgen/stubs/jsr239/GLImplHeader.java-impl
+++ b/opengl/tools/glgen/stubs/jsr239/GLImplHeader.java-impl
@@ -22,6 +22,7 @@
 import android.content.pm.ApplicationInfo;
 import android.content.pm.IPackageManager;
 import android.os.Build;
+import android.os.UserId;
 import android.util.Log;
 
 import java.nio.Buffer;
@@ -66,7 +67,7 @@
         int version = 0;
         IPackageManager pm = AppGlobals.getPackageManager();
         try {
-            ApplicationInfo applicationInfo = pm.getApplicationInfo(appName, 0);
+            ApplicationInfo applicationInfo = pm.getApplicationInfo(appName, 0, UserId.myUserId());
             if (applicationInfo != null) {
                 version = applicationInfo.targetSdkVersion;
             }
diff --git a/services/powermanager/IPowerManager.cpp b/services/powermanager/IPowerManager.cpp
index a0f19d4..0265df3 100644
--- a/services/powermanager/IPowerManager.cpp
+++ b/services/powermanager/IPowerManager.cpp
@@ -30,7 +30,7 @@
 // must be kept in sync with IPowerManager.aidl
 enum {
     ACQUIRE_WAKE_LOCK = IBinder::FIRST_CALL_TRANSACTION,
-    RELEASE_WAKE_LOCK = IBinder::FIRST_CALL_TRANSACTION + 4,
+    RELEASE_WAKE_LOCK = IBinder::FIRST_CALL_TRANSACTION + 1,
 };
 
 class BpPowerManager : public BpInterface<IPowerManager>
@@ -46,11 +46,10 @@
         Parcel data, reply;
         data.writeInterfaceToken(IPowerManager::getInterfaceDescriptor());
 
-        data.writeInt32(flags);
         data.writeStrongBinder(lock);
+        data.writeInt32(flags);
         data.writeString16(tag);
-        // no WorkSource passed
-        data.writeInt32(0);
+        data.writeInt32(0); // no WorkSource
         return remote()->transact(ACQUIRE_WAKE_LOCK, data, &reply);
     }
 
diff --git a/services/sensorservice/Android.mk b/services/sensorservice/Android.mk
new file mode 100644
index 0000000..6a302c0
--- /dev/null
+++ b/services/sensorservice/Android.mk
@@ -0,0 +1,31 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+	CorrectedGyroSensor.cpp \
+    Fusion.cpp \
+    GravitySensor.cpp \
+    LinearAccelerationSensor.cpp \
+    OrientationSensor.cpp \
+    RotationVectorSensor.cpp \
+    SensorDevice.cpp \
+    SensorFusion.cpp \
+    SensorInterface.cpp \
+    SensorService.cpp \
+
+
+LOCAL_CFLAGS:= -DLOG_TAG=\"SensorService\"
+
+LOCAL_SHARED_LIBRARIES := \
+	libcutils \
+	libhardware \
+	libutils \
+	libbinder \
+	libui \
+	libgui
+
+
+
+LOCAL_MODULE:= libsensorservice
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/services/sensorservice/CorrectedGyroSensor.cpp b/services/sensorservice/CorrectedGyroSensor.cpp
new file mode 100644
index 0000000..1857443
--- /dev/null
+++ b/services/sensorservice/CorrectedGyroSensor.cpp
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2011 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "CorrectedGyroSensor.h"
+#include "SensorDevice.h"
+#include "SensorFusion.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+CorrectedGyroSensor::CorrectedGyroSensor(sensor_t const* list, size_t count)
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensorFusion(SensorFusion::getInstance())
+{
+    for (size_t i=0 ; i<count ; i++) {
+        if (list[i].type == SENSOR_TYPE_GYROSCOPE) {
+            mGyro = Sensor(list + i);
+            break;
+        }
+    }
+}
+
+bool CorrectedGyroSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    if (event.type == SENSOR_TYPE_GYROSCOPE) {
+        const vec3_t bias(mSensorFusion.getGyroBias());
+        *outEvent = event;
+        outEvent->data[0] -= bias.x;
+        outEvent->data[1] -= bias.y;
+        outEvent->data[2] -= bias.z;
+        outEvent->sensor = '_cgy';
+        return true;
+    }
+    return false;
+}
+
+status_t CorrectedGyroSensor::activate(void* ident, bool enabled) {
+    mSensorDevice.activate(this, mGyro.getHandle(), enabled);
+    return mSensorFusion.activate(this, enabled);
+}
+
+status_t CorrectedGyroSensor::setDelay(void* ident, int handle, int64_t ns) {
+    mSensorDevice.setDelay(this, mGyro.getHandle(), ns);
+    return mSensorFusion.setDelay(this, ns);
+}
+
+Sensor CorrectedGyroSensor::getSensor() const {
+    sensor_t hwSensor;
+    hwSensor.name       = "Corrected Gyroscope Sensor";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = 1;
+    hwSensor.handle     = '_cgy';
+    hwSensor.type       = SENSOR_TYPE_GYROSCOPE;
+    hwSensor.maxRange   = mGyro.getMaxValue();
+    hwSensor.resolution = mGyro.getResolution();
+    hwSensor.power      = mSensorFusion.getPowerUsage();
+    hwSensor.minDelay   = mGyro.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/CorrectedGyroSensor.h b/services/sensorservice/CorrectedGyroSensor.h
new file mode 100644
index 0000000..3c49c08
--- /dev/null
+++ b/services/sensorservice/CorrectedGyroSensor.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2011 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_CORRECTED_GYRO_SENSOR_H
+#define ANDROID_CORRECTED_GYRO_SENSOR_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorInterface.h"
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorDevice;
+class SensorFusion;
+
+class CorrectedGyroSensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    SensorFusion& mSensorFusion;
+    Sensor mGyro;
+
+public:
+    CorrectedGyroSensor(sensor_t const* list, size_t count);
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_CORRECTED_GYRO_SENSOR_H
diff --git a/services/sensorservice/Fusion.cpp b/services/sensorservice/Fusion.cpp
new file mode 100644
index 0000000..93d6127
--- /dev/null
+++ b/services/sensorservice/Fusion.cpp
@@ -0,0 +1,497 @@
+/*
+ * Copyright (C) 2011 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 <stdio.h>
+
+#include <utils/Log.h>
+
+#include "Fusion.h"
+
+namespace android {
+
+// -----------------------------------------------------------------------
+
+/*
+ * gyroVAR gives the measured variance of the gyro's output per
+ * Hz (or variance at 1 Hz). This is an "intrinsic" parameter of the gyro,
+ * which is independent of the sampling frequency.
+ *
+ * The variance of gyro's output at a given sampling period can be
+ * calculated as:
+ *      variance(T) = gyroVAR / T
+ *
+ * The variance of the INTEGRATED OUTPUT at a given sampling period can be
+ * calculated as:
+ *       variance_integrate_output(T) = gyroVAR * T
+ *
+ */
+static const float gyroVAR = 1e-7;      // (rad/s)^2 / Hz
+static const float biasVAR = 1e-8;      // (rad/s)^2 / s (guessed)
+
+/*
+ * Standard deviations of accelerometer and magnetometer
+ */
+static const float accSTDEV  = 0.05f;   // m/s^2 (measured 0.08 / CDD 0.05)
+static const float magSTDEV  = 0.5f;    // uT    (measured 0.7  / CDD 0.5)
+
+static const float SYMMETRY_TOLERANCE = 1e-10f;
+
+/*
+ * Accelerometer updates will not be performed near free fall to avoid
+ * ill-conditioning and div by zeros.
+ * Threshhold: 10% of g, in m/s^2
+ */
+static const float FREE_FALL_THRESHOLD = 0.981f;
+static const float FREE_FALL_THRESHOLD_SQ =
+        FREE_FALL_THRESHOLD*FREE_FALL_THRESHOLD;
+
+/*
+ * The geomagnetic-field should be between 30uT and 60uT.
+ * Fields strengths greater than this likely indicate a local magnetic
+ * disturbance which we do not want to update into the fused frame.
+ */
+static const float MAX_VALID_MAGNETIC_FIELD = 100; // uT
+static const float MAX_VALID_MAGNETIC_FIELD_SQ =
+        MAX_VALID_MAGNETIC_FIELD*MAX_VALID_MAGNETIC_FIELD;
+
+/*
+ * Values of the field smaller than this should be ignored in fusion to avoid
+ * ill-conditioning. This state can happen with anomalous local magnetic
+ * disturbances canceling the Earth field.
+ */
+static const float MIN_VALID_MAGNETIC_FIELD = 10; // uT
+static const float MIN_VALID_MAGNETIC_FIELD_SQ =
+        MIN_VALID_MAGNETIC_FIELD*MIN_VALID_MAGNETIC_FIELD;
+
+/*
+ * If the cross product of two vectors has magnitude squared less than this,
+ * we reject it as invalid due to alignment of the vectors.
+ * This threshold is used to check for the case where the magnetic field sample
+ * is parallel to the gravity field, which can happen in certain places due
+ * to magnetic field disturbances.
+ */
+static const float MIN_VALID_CROSS_PRODUCT_MAG = 1.0e-3;
+static const float MIN_VALID_CROSS_PRODUCT_MAG_SQ =
+    MIN_VALID_CROSS_PRODUCT_MAG*MIN_VALID_CROSS_PRODUCT_MAG;
+
+// -----------------------------------------------------------------------
+
+template <typename TYPE, size_t C, size_t R>
+static mat<TYPE, R, R> scaleCovariance(
+        const mat<TYPE, C, R>& A,
+        const mat<TYPE, C, C>& P) {
+    // A*P*transpose(A);
+    mat<TYPE, R, R> APAt;
+    for (size_t r=0 ; r<R ; r++) {
+        for (size_t j=r ; j<R ; j++) {
+            double apat(0);
+            for (size_t c=0 ; c<C ; c++) {
+                double v(A[c][r]*P[c][c]*0.5);
+                for (size_t k=c+1 ; k<C ; k++)
+                    v += A[k][r] * P[c][k];
+                apat += 2 * v * A[c][j];
+            }
+            APAt[j][r] = apat;
+            APAt[r][j] = apat;
+        }
+    }
+    return APAt;
+}
+
+template <typename TYPE, typename OTHER_TYPE>
+static mat<TYPE, 3, 3> crossMatrix(const vec<TYPE, 3>& p, OTHER_TYPE diag) {
+    mat<TYPE, 3, 3> r;
+    r[0][0] = diag;
+    r[1][1] = diag;
+    r[2][2] = diag;
+    r[0][1] = p.z;
+    r[1][0] =-p.z;
+    r[0][2] =-p.y;
+    r[2][0] = p.y;
+    r[1][2] = p.x;
+    r[2][1] =-p.x;
+    return r;
+}
+
+
+template<typename TYPE, size_t SIZE>
+class Covariance {
+    mat<TYPE, SIZE, SIZE> mSumXX;
+    vec<TYPE, SIZE> mSumX;
+    size_t mN;
+public:
+    Covariance() : mSumXX(0.0f), mSumX(0.0f), mN(0) { }
+    void update(const vec<TYPE, SIZE>& x) {
+        mSumXX += x*transpose(x);
+        mSumX  += x;
+        mN++;
+    }
+    mat<TYPE, SIZE, SIZE> operator()() const {
+        const float N = 1.0f / mN;
+        return mSumXX*N - (mSumX*transpose(mSumX))*(N*N);
+    }
+    void reset() {
+        mN = 0;
+        mSumXX = 0;
+        mSumX = 0;
+    }
+    size_t getCount() const {
+        return mN;
+    }
+};
+
+// -----------------------------------------------------------------------
+
+Fusion::Fusion() {
+    Phi[0][1] = 0;
+    Phi[1][1] = 1;
+
+    Ba.x = 0;
+    Ba.y = 0;
+    Ba.z = 1;
+
+    Bm.x = 0;
+    Bm.y = 1;
+    Bm.z = 0;
+
+    x0 = 0;
+    x1 = 0;
+
+    init();
+}
+
+void Fusion::init() {
+    mInitState = 0;
+
+    mGyroRate = 0;
+
+    mCount[0] = 0;
+    mCount[1] = 0;
+    mCount[2] = 0;
+
+    mData = 0;
+}
+
+void Fusion::initFusion(const vec4_t& q, float dT)
+{
+    // initial estimate: E{ x(t0) }
+    x0 = q;
+    x1 = 0;
+
+    // process noise covariance matrix: G.Q.Gt, with
+    //
+    //  G = | -1 0 |        Q = | q00 q10 |
+    //      |  0 1 |            | q01 q11 |
+    //
+    // q00 = sv^2.dt + 1/3.su^2.dt^3
+    // q10 = q01 = 1/2.su^2.dt^2
+    // q11 = su^2.dt
+    //
+
+    const float dT2 = dT*dT;
+    const float dT3 = dT2*dT;
+
+    // variance of integrated output at 1/dT Hz (random drift)
+    const float q00 = gyroVAR * dT + 0.33333f * biasVAR * dT3;
+
+    // variance of drift rate ramp
+    const float q11 = biasVAR * dT;
+    const float q10 = 0.5f * biasVAR * dT2;
+    const float q01 = q10;
+
+    GQGt[0][0] =  q00;      // rad^2
+    GQGt[1][0] = -q10;
+    GQGt[0][1] = -q01;
+    GQGt[1][1] =  q11;      // (rad/s)^2
+
+    // initial covariance: Var{ x(t0) }
+    // TODO: initialize P correctly
+    P = 0;
+
+    // it is unclear how to set the initial covariance. It does affect
+    // how quickly the fusion converges. Experimentally it would take
+    // about 10 seconds at 200 Hz to estimate the gyro-drift with an
+    // initial covariance of 0, and about a second with an initial covariance
+    // of about 1 deg/s.
+    const float covv = 0;
+    const float covu = 0.5f * (float(M_PI) / 180);
+    mat33_t& Pv = P[0][0];
+    Pv[0][0] = covv;
+    Pv[1][1] = covv;
+    Pv[2][2] = covv;
+    mat33_t& Pu = P[1][1];
+    Pu[0][0] = covu;
+    Pu[1][1] = covu;
+    Pu[2][2] = covu;
+}
+
+bool Fusion::hasEstimate() const {
+    return (mInitState == (MAG|ACC|GYRO));
+}
+
+bool Fusion::checkInitComplete(int what, const vec3_t& d, float dT) {
+    if (hasEstimate())
+        return true;
+
+    if (what == ACC) {
+        mData[0] += d * (1/length(d));
+        mCount[0]++;
+        mInitState |= ACC;
+    } else if (what == MAG) {
+        mData[1] += d * (1/length(d));
+        mCount[1]++;
+        mInitState |= MAG;
+    } else if (what == GYRO) {
+        mGyroRate = dT;
+        mData[2] += d*dT;
+        mCount[2]++;
+        if (mCount[2] == 64) {
+            // 64 samples is good enough to estimate the gyro drift and
+            // doesn't take too much time.
+            mInitState |= GYRO;
+        }
+    }
+
+    if (mInitState == (MAG|ACC|GYRO)) {
+        // Average all the values we collected so far
+        mData[0] *= 1.0f/mCount[0];
+        mData[1] *= 1.0f/mCount[1];
+        mData[2] *= 1.0f/mCount[2];
+
+        // calculate the MRPs from the data collection, this gives us
+        // a rough estimate of our initial state
+        mat33_t R;
+        vec3_t up(mData[0]);
+        vec3_t east(cross_product(mData[1], up));
+        east *= 1/length(east);
+        vec3_t north(cross_product(up, east));
+        R << east << north << up;
+        const vec4_t q = matrixToQuat(R);
+
+        initFusion(q, mGyroRate);
+    }
+
+    return false;
+}
+
+void Fusion::handleGyro(const vec3_t& w, float dT) {
+    if (!checkInitComplete(GYRO, w, dT))
+        return;
+
+    predict(w, dT);
+}
+
+status_t Fusion::handleAcc(const vec3_t& a) {
+    // ignore acceleration data if we're close to free-fall
+    if (length_squared(a) < FREE_FALL_THRESHOLD_SQ) {
+        return BAD_VALUE;
+    }
+
+    if (!checkInitComplete(ACC, a))
+        return BAD_VALUE;
+
+    const float l = 1/length(a);
+    update(a*l, Ba, accSTDEV*l);
+    return NO_ERROR;
+}
+
+status_t Fusion::handleMag(const vec3_t& m) {
+    // the geomagnetic-field should be between 30uT and 60uT
+    // reject if too large to avoid spurious magnetic sources
+    const float magFieldSq = length_squared(m);
+    if (magFieldSq > MAX_VALID_MAGNETIC_FIELD_SQ) {
+        return BAD_VALUE;
+    } else if (magFieldSq < MIN_VALID_MAGNETIC_FIELD_SQ) {
+        // Also reject if too small since we will get ill-defined (zero mag)
+        // cross-products below
+        return BAD_VALUE;
+    }
+
+    if (!checkInitComplete(MAG, m))
+        return BAD_VALUE;
+
+    // Orthogonalize the magnetic field to the gravity field, mapping it into
+    // tangent to Earth.
+    const vec3_t up( getRotationMatrix() * Ba );
+    const vec3_t east( cross_product(m, up) );
+
+    // If the m and up vectors align, the cross product magnitude will
+    // approach 0.
+    // Reject this case as well to avoid div by zero problems and
+    // ill-conditioning below.
+    if (length_squared(east) < MIN_VALID_CROSS_PRODUCT_MAG_SQ) {
+        return BAD_VALUE;
+    }
+
+    // If we have created an orthogonal magnetic field successfully,
+    // then pass it in as the update.
+    vec3_t north( cross_product(up, east) );
+
+    const float l = 1 / length(north);
+    north *= l;
+
+    update(north, Bm, magSTDEV*l);
+    return NO_ERROR;
+}
+
+void Fusion::checkState() {
+    // P needs to stay positive semidefinite or the fusion diverges. When we
+    // detect divergence, we reset the fusion.
+    // TODO(braun): Instead, find the reason for the divergence and fix it.
+
+    if (!isPositiveSemidefinite(P[0][0], SYMMETRY_TOLERANCE) ||
+        !isPositiveSemidefinite(P[1][1], SYMMETRY_TOLERANCE)) {
+        ALOGW("Sensor fusion diverged; resetting state.");
+        P = 0;
+    }
+}
+
+vec4_t Fusion::getAttitude() const {
+    return x0;
+}
+
+vec3_t Fusion::getBias() const {
+    return x1;
+}
+
+mat33_t Fusion::getRotationMatrix() const {
+    return quatToMatrix(x0);
+}
+
+mat34_t Fusion::getF(const vec4_t& q) {
+    mat34_t F;
+
+    // This is used to compute the derivative of q
+    // F = | [q.xyz]x |
+    //     |  -q.xyz  |
+
+    F[0].x = q.w;   F[1].x =-q.z;   F[2].x = q.y;
+    F[0].y = q.z;   F[1].y = q.w;   F[2].y =-q.x;
+    F[0].z =-q.y;   F[1].z = q.x;   F[2].z = q.w;
+    F[0].w =-q.x;   F[1].w =-q.y;   F[2].w =-q.z;
+    return F;
+}
+
+void Fusion::predict(const vec3_t& w, float dT) {
+    const vec4_t q  = x0;
+    const vec3_t b  = x1;
+    const vec3_t we = w - b;
+
+    // q(k+1) = O(we)*q(k)
+    // --------------------
+    //
+    // O(w) = | cos(0.5*||w||*dT)*I33 - [psi]x                   psi |
+    //        | -psi'                              cos(0.5*||w||*dT) |
+    //
+    // psi = sin(0.5*||w||*dT)*w / ||w||
+    //
+    //
+    // P(k+1) = Phi(k)*P(k)*Phi(k)' + G*Q(k)*G'
+    // ----------------------------------------
+    //
+    // G = | -I33    0 |
+    //     |    0  I33 |
+    //
+    //  Phi = | Phi00 Phi10 |
+    //        |   0     1   |
+    //
+    //  Phi00 =   I33
+    //          - [w]x   * sin(||w||*dt)/||w||
+    //          + [w]x^2 * (1-cos(||w||*dT))/||w||^2
+    //
+    //  Phi10 =   [w]x   * (1        - cos(||w||*dt))/||w||^2
+    //          - [w]x^2 * (||w||*dT - sin(||w||*dt))/||w||^3
+    //          - I33*dT
+
+    const mat33_t I33(1);
+    const mat33_t I33dT(dT);
+    const mat33_t wx(crossMatrix(we, 0));
+    const mat33_t wx2(wx*wx);
+    const float lwedT = length(we)*dT;
+    const float hlwedT = 0.5f*lwedT;
+    const float ilwe = 1/length(we);
+    const float k0 = (1-cosf(lwedT))*(ilwe*ilwe);
+    const float k1 = sinf(lwedT);
+    const float k2 = cosf(hlwedT);
+    const vec3_t psi(sinf(hlwedT)*ilwe*we);
+    const mat33_t O33(crossMatrix(-psi, k2));
+    mat44_t O;
+    O[0].xyz = O33[0];  O[0].w = -psi.x;
+    O[1].xyz = O33[1];  O[1].w = -psi.y;
+    O[2].xyz = O33[2];  O[2].w = -psi.z;
+    O[3].xyz = psi;     O[3].w = k2;
+
+    Phi[0][0] = I33 - wx*(k1*ilwe) + wx2*k0;
+    Phi[1][0] = wx*k0 - I33dT - wx2*(ilwe*ilwe*ilwe)*(lwedT-k1);
+
+    x0 = O*q;
+    if (x0.w < 0)
+        x0 = -x0;
+
+    P = Phi*P*transpose(Phi) + GQGt;
+
+    checkState();
+}
+
+void Fusion::update(const vec3_t& z, const vec3_t& Bi, float sigma) {
+    vec4_t q(x0);
+    // measured vector in body space: h(p) = A(p)*Bi
+    const mat33_t A(quatToMatrix(q));
+    const vec3_t Bb(A*Bi);
+
+    // Sensitivity matrix H = dh(p)/dp
+    // H = [ L 0 ]
+    const mat33_t L(crossMatrix(Bb, 0));
+
+    // gain...
+    // K = P*Ht / [H*P*Ht + R]
+    vec<mat33_t, 2> K;
+    const mat33_t R(sigma*sigma);
+    const mat33_t S(scaleCovariance(L, P[0][0]) + R);
+    const mat33_t Si(invert(S));
+    const mat33_t LtSi(transpose(L)*Si);
+    K[0] = P[0][0] * LtSi;
+    K[1] = transpose(P[1][0])*LtSi;
+
+    // update...
+    // P = (I-K*H) * P
+    // P -= K*H*P
+    // | K0 | * | L 0 | * P = | K0*L  0 | * | P00  P10 | = | K0*L*P00  K0*L*P10 |
+    // | K1 |                 | K1*L  0 |   | P01  P11 |   | K1*L*P00  K1*L*P10 |
+    // Note: the Joseph form is numerically more stable and given by:
+    //     P = (I-KH) * P * (I-KH)' + K*R*R'
+    const mat33_t K0L(K[0] * L);
+    const mat33_t K1L(K[1] * L);
+    P[0][0] -= K0L*P[0][0];
+    P[1][1] -= K1L*P[1][0];
+    P[1][0] -= K0L*P[1][0];
+    P[0][1] = transpose(P[1][0]);
+
+    const vec3_t e(z - Bb);
+    const vec3_t dq(K[0]*e);
+    const vec3_t db(K[1]*e);
+
+    q += getF(q)*(0.5f*dq);
+    x0 = normalize_quat(q);
+    x1 += db;
+
+    checkState();
+}
+
+// -----------------------------------------------------------------------
+
+}; // namespace android
+
diff --git a/services/sensorservice/Fusion.h b/services/sensorservice/Fusion.h
new file mode 100644
index 0000000..7062999
--- /dev/null
+++ b/services/sensorservice/Fusion.h
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2011 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_FUSION_H
+#define ANDROID_FUSION_H
+
+#include <utils/Errors.h>
+
+#include "quat.h"
+#include "mat.h"
+#include "vec.h"
+
+namespace android {
+
+typedef mat<float, 3, 4> mat34_t;
+
+class Fusion {
+    /*
+     * the state vector is made of two sub-vector containing respectively:
+     * - modified Rodrigues parameters
+     * - the estimated gyro bias
+     */
+    quat_t  x0;
+    vec3_t  x1;
+
+    /*
+     * the predicated covariance matrix is made of 4 3x3 sub-matrices and it is
+     * semi-definite positive.
+     *
+     * P = | P00  P10 | = | P00  P10 |
+     *     | P01  P11 |   | P10t P11 |
+     *
+     * Since P01 = transpose(P10), the code below never calculates or
+     * stores P01.
+     */
+    mat<mat33_t, 2, 2> P;
+
+    /*
+     * the process noise covariance matrix
+     */
+    mat<mat33_t, 2, 2> GQGt;
+
+public:
+    Fusion();
+    void init();
+    void handleGyro(const vec3_t& w, float dT);
+    status_t handleAcc(const vec3_t& a);
+    status_t handleMag(const vec3_t& m);
+    vec4_t getAttitude() const;
+    vec3_t getBias() const;
+    mat33_t getRotationMatrix() const;
+    bool hasEstimate() const;
+
+private:
+    mat<mat33_t, 2, 2> Phi;
+    vec3_t Ba, Bm;
+    uint32_t mInitState;
+    float mGyroRate;
+    vec<vec3_t, 3> mData;
+    size_t mCount[3];
+    enum { ACC=0x1, MAG=0x2, GYRO=0x4 };
+    bool checkInitComplete(int, const vec3_t& w, float d = 0);
+    void initFusion(const vec4_t& q0, float dT);
+    void checkState();
+    void predict(const vec3_t& w, float dT);
+    void update(const vec3_t& z, const vec3_t& Bi, float sigma);
+    static mat34_t getF(const vec4_t& p);
+};
+
+}; // namespace android
+
+#endif // ANDROID_FUSION_H
diff --git a/services/sensorservice/GravitySensor.cpp b/services/sensorservice/GravitySensor.cpp
new file mode 100644
index 0000000..c57715f
--- /dev/null
+++ b/services/sensorservice/GravitySensor.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "GravitySensor.h"
+#include "SensorDevice.h"
+#include "SensorFusion.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+GravitySensor::GravitySensor(sensor_t const* list, size_t count)
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensorFusion(SensorFusion::getInstance())
+{
+    for (size_t i=0 ; i<count ; i++) {
+        if (list[i].type == SENSOR_TYPE_ACCELEROMETER) {
+            mAccelerometer = Sensor(list + i);
+            break;
+        }
+    }
+}
+
+bool GravitySensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    const static double NS2S = 1.0 / 1000000000.0;
+    if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+        vec3_t g;
+        if (!mSensorFusion.hasEstimate())
+            return false;
+        const mat33_t R(mSensorFusion.getRotationMatrix());
+        // FIXME: we need to estimate the length of gravity because
+        // the accelerometer may have a small scaling error. This
+        // translates to an offset in the linear-acceleration sensor.
+        g = R[2] * GRAVITY_EARTH;
+
+        *outEvent = event;
+        outEvent->data[0] = g.x;
+        outEvent->data[1] = g.y;
+        outEvent->data[2] = g.z;
+        outEvent->sensor = '_grv';
+        outEvent->type = SENSOR_TYPE_GRAVITY;
+        return true;
+    }
+    return false;
+}
+
+status_t GravitySensor::activate(void* ident, bool enabled) {
+    return mSensorFusion.activate(this, enabled);
+}
+
+status_t GravitySensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mSensorFusion.setDelay(this, ns);
+}
+
+Sensor GravitySensor::getSensor() const {
+    sensor_t hwSensor;
+    hwSensor.name       = "Gravity Sensor";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = 3;
+    hwSensor.handle     = '_grv';
+    hwSensor.type       = SENSOR_TYPE_GRAVITY;
+    hwSensor.maxRange   = GRAVITY_EARTH * 2;
+    hwSensor.resolution = mAccelerometer.getResolution();
+    hwSensor.power      = mSensorFusion.getPowerUsage();
+    hwSensor.minDelay   = mSensorFusion.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/GravitySensor.h b/services/sensorservice/GravitySensor.h
new file mode 100644
index 0000000..ac177c4
--- /dev/null
+++ b/services/sensorservice/GravitySensor.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2010 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_GRAVITY_SENSOR_H
+#define ANDROID_GRAVITY_SENSOR_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorInterface.h"
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorDevice;
+class SensorFusion;
+
+class GravitySensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    SensorFusion& mSensorFusion;
+    Sensor mAccelerometer;
+
+public:
+    GravitySensor(sensor_t const* list, size_t count);
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_GRAVITY_SENSOR_H
diff --git a/services/sensorservice/LinearAccelerationSensor.cpp b/services/sensorservice/LinearAccelerationSensor.cpp
new file mode 100644
index 0000000..f0054f2
--- /dev/null
+++ b/services/sensorservice/LinearAccelerationSensor.cpp
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "LinearAccelerationSensor.h"
+#include "SensorDevice.h"
+#include "SensorFusion.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+LinearAccelerationSensor::LinearAccelerationSensor(sensor_t const* list, size_t count)
+    : mSensorDevice(SensorDevice::getInstance()),
+      mGravitySensor(list, count)
+{
+}
+
+bool LinearAccelerationSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    bool result = mGravitySensor.process(outEvent, event);
+    if (result && event.type == SENSOR_TYPE_ACCELEROMETER) {
+        outEvent->data[0] = event.acceleration.x - outEvent->data[0];
+        outEvent->data[1] = event.acceleration.y - outEvent->data[1];
+        outEvent->data[2] = event.acceleration.z - outEvent->data[2];
+        outEvent->sensor = '_lin';
+        outEvent->type = SENSOR_TYPE_LINEAR_ACCELERATION;
+        return true;
+    }
+    return false;
+}
+
+status_t LinearAccelerationSensor::activate(void* ident, bool enabled) {
+    return mGravitySensor.activate(this, enabled);
+}
+
+status_t LinearAccelerationSensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mGravitySensor.setDelay(this, handle, ns);
+}
+
+Sensor LinearAccelerationSensor::getSensor() const {
+    Sensor gsensor(mGravitySensor.getSensor());
+    sensor_t hwSensor;
+    hwSensor.name       = "Linear Acceleration Sensor";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = gsensor.getVersion();
+    hwSensor.handle     = '_lin';
+    hwSensor.type       = SENSOR_TYPE_LINEAR_ACCELERATION;
+    hwSensor.maxRange   = gsensor.getMaxValue();
+    hwSensor.resolution = gsensor.getResolution();
+    hwSensor.power      = gsensor.getPowerUsage();
+    hwSensor.minDelay   = gsensor.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/LinearAccelerationSensor.h b/services/sensorservice/LinearAccelerationSensor.h
new file mode 100644
index 0000000..5deb24f
--- /dev/null
+++ b/services/sensorservice/LinearAccelerationSensor.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2010 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_LINEAR_ACCELERATION_SENSOR_H
+#define ANDROID_LINEAR_ACCELERATION_SENSOR_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorInterface.h"
+#include "GravitySensor.h"
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorDevice;
+class SensorFusion;
+
+class LinearAccelerationSensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    GravitySensor mGravitySensor;
+
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+public:
+    LinearAccelerationSensor(sensor_t const* list, size_t count);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_LINEAR_ACCELERATION_SENSOR_H
diff --git a/services/sensorservice/OrientationSensor.cpp b/services/sensorservice/OrientationSensor.cpp
new file mode 100644
index 0000000..037adaa
--- /dev/null
+++ b/services/sensorservice/OrientationSensor.cpp
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2011 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "OrientationSensor.h"
+#include "SensorDevice.h"
+#include "SensorFusion.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+OrientationSensor::OrientationSensor()
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensorFusion(SensorFusion::getInstance())
+{
+}
+
+bool OrientationSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+        if (mSensorFusion.hasEstimate()) {
+            vec3_t g;
+            const float rad2deg = 180 / M_PI;
+            const mat33_t R(mSensorFusion.getRotationMatrix());
+            g[0] = atan2f(-R[1][0], R[0][0])    * rad2deg;
+            g[1] = atan2f(-R[2][1], R[2][2])    * rad2deg;
+            g[2] = asinf ( R[2][0])             * rad2deg;
+            if (g[0] < 0)
+                g[0] += 360;
+
+            *outEvent = event;
+            outEvent->orientation.azimuth = g.x;
+            outEvent->orientation.pitch   = g.y;
+            outEvent->orientation.roll    = g.z;
+            outEvent->orientation.status  = SENSOR_STATUS_ACCURACY_HIGH;
+            outEvent->sensor = '_ypr';
+            outEvent->type = SENSOR_TYPE_ORIENTATION;
+            return true;
+        }
+    }
+    return false;
+}
+
+status_t OrientationSensor::activate(void* ident, bool enabled) {
+    return mSensorFusion.activate(this, enabled);
+}
+
+status_t OrientationSensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mSensorFusion.setDelay(this, ns);
+}
+
+Sensor OrientationSensor::getSensor() const {
+    sensor_t hwSensor;
+    hwSensor.name       = "Orientation Sensor";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = 1;
+    hwSensor.handle     = '_ypr';
+    hwSensor.type       = SENSOR_TYPE_ORIENTATION;
+    hwSensor.maxRange   = 360.0f;
+    hwSensor.resolution = 1.0f/256.0f; // FIXME: real value here
+    hwSensor.power      = mSensorFusion.getPowerUsage();
+    hwSensor.minDelay   = mSensorFusion.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/OrientationSensor.h b/services/sensorservice/OrientationSensor.h
new file mode 100644
index 0000000..855949d
--- /dev/null
+++ b/services/sensorservice/OrientationSensor.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2011 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_ORIENTATION_SENSOR_H
+#define ANDROID_ORIENTATION_SENSOR_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorInterface.h"
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorDevice;
+class SensorFusion;
+
+class OrientationSensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    SensorFusion& mSensorFusion;
+
+public:
+    OrientationSensor();
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_ORIENTATION_SENSOR_H
diff --git a/services/sensorservice/RotationVectorSensor.cpp b/services/sensorservice/RotationVectorSensor.cpp
new file mode 100644
index 0000000..5ea9568
--- /dev/null
+++ b/services/sensorservice/RotationVectorSensor.cpp
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+
+#include <hardware/sensors.h>
+
+#include "RotationVectorSensor.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+RotationVectorSensor::RotationVectorSensor()
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensorFusion(SensorFusion::getInstance())
+{
+}
+
+bool RotationVectorSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+        if (mSensorFusion.hasEstimate()) {
+            const vec4_t q(mSensorFusion.getAttitude());
+            *outEvent = event;
+            outEvent->data[0] = q.x;
+            outEvent->data[1] = q.y;
+            outEvent->data[2] = q.z;
+            outEvent->data[3] = q.w;
+            outEvent->sensor = '_rov';
+            outEvent->type = SENSOR_TYPE_ROTATION_VECTOR;
+            return true;
+        }
+    }
+    return false;
+}
+
+status_t RotationVectorSensor::activate(void* ident, bool enabled) {
+    return mSensorFusion.activate(this, enabled);
+}
+
+status_t RotationVectorSensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mSensorFusion.setDelay(this, ns);
+}
+
+Sensor RotationVectorSensor::getSensor() const {
+    sensor_t hwSensor;
+    hwSensor.name       = "Rotation Vector Sensor";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = 3;
+    hwSensor.handle     = '_rov';
+    hwSensor.type       = SENSOR_TYPE_ROTATION_VECTOR;
+    hwSensor.maxRange   = 1;
+    hwSensor.resolution = 1.0f / (1<<24);
+    hwSensor.power      = mSensorFusion.getPowerUsage();
+    hwSensor.minDelay   = mSensorFusion.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+
+GyroDriftSensor::GyroDriftSensor()
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensorFusion(SensorFusion::getInstance())
+{
+}
+
+bool GyroDriftSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event)
+{
+    if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+        if (mSensorFusion.hasEstimate()) {
+            const vec3_t b(mSensorFusion.getGyroBias());
+            *outEvent = event;
+            outEvent->data[0] = b.x;
+            outEvent->data[1] = b.y;
+            outEvent->data[2] = b.z;
+            outEvent->sensor = '_gbs';
+            outEvent->type = SENSOR_TYPE_ACCELEROMETER;
+            return true;
+        }
+    }
+    return false;
+}
+
+status_t GyroDriftSensor::activate(void* ident, bool enabled) {
+    return mSensorFusion.activate(this, enabled);
+}
+
+status_t GyroDriftSensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mSensorFusion.setDelay(this, ns);
+}
+
+Sensor GyroDriftSensor::getSensor() const {
+    sensor_t hwSensor;
+    hwSensor.name       = "Gyroscope Bias (debug)";
+    hwSensor.vendor     = "Google Inc.";
+    hwSensor.version    = 1;
+    hwSensor.handle     = '_gbs';
+    hwSensor.type       = SENSOR_TYPE_ACCELEROMETER;
+    hwSensor.maxRange   = 1;
+    hwSensor.resolution = 1.0f / (1<<24);
+    hwSensor.power      = mSensorFusion.getPowerUsage();
+    hwSensor.minDelay   = mSensorFusion.getMinDelay();
+    Sensor sensor(&hwSensor);
+    return sensor;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/RotationVectorSensor.h b/services/sensorservice/RotationVectorSensor.h
new file mode 100644
index 0000000..bb97fe1
--- /dev/null
+++ b/services/sensorservice/RotationVectorSensor.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2010 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_ROTATION_VECTOR_SENSOR_H
+#define ANDROID_ROTATION_VECTOR_SENSOR_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorDevice.h"
+#include "SensorInterface.h"
+
+#include "Fusion.h"
+#include "SensorFusion.h"
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class RotationVectorSensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    SensorFusion& mSensorFusion;
+
+public:
+    RotationVectorSensor();
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+class GyroDriftSensor : public SensorInterface {
+    SensorDevice& mSensorDevice;
+    SensorFusion& mSensorFusion;
+
+public:
+    GyroDriftSensor();
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return true; }
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_ROTATION_VECTOR_SENSOR_H
diff --git a/services/sensorservice/SensorDevice.cpp b/services/sensorservice/SensorDevice.cpp
new file mode 100644
index 0000000..2244a86
--- /dev/null
+++ b/services/sensorservice/SensorDevice.cpp
@@ -0,0 +1,282 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <utils/Atomic.h>
+#include <utils/Errors.h>
+#include <utils/Singleton.h>
+
+#include <binder/BinderService.h>
+#include <binder/Parcel.h>
+#include <binder/IServiceManager.h>
+
+#include <hardware/sensors.h>
+
+#include "SensorDevice.h"
+#include "SensorService.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+class BatteryService : public Singleton<BatteryService> {
+    static const int TRANSACTION_noteStartSensor = IBinder::FIRST_CALL_TRANSACTION + 3;
+    static const int TRANSACTION_noteStopSensor = IBinder::FIRST_CALL_TRANSACTION + 4;
+    static const String16 DESCRIPTOR;
+
+    friend class Singleton<BatteryService>;
+    sp<IBinder> mBatteryStatService;
+
+    BatteryService() {
+        const sp<IServiceManager> sm(defaultServiceManager());
+        if (sm != NULL) {
+            const String16 name("batteryinfo");
+            mBatteryStatService = sm->getService(name);
+        }
+    }
+
+    status_t noteStartSensor(int uid, int handle) {
+        Parcel data, reply;
+        data.writeInterfaceToken(DESCRIPTOR);
+        data.writeInt32(uid);
+        data.writeInt32(handle);
+        status_t err = mBatteryStatService->transact(
+                TRANSACTION_noteStartSensor, data, &reply, 0);
+        err = reply.readExceptionCode();
+        return err;
+    }
+
+    status_t noteStopSensor(int uid, int handle) {
+        Parcel data, reply;
+        data.writeInterfaceToken(DESCRIPTOR);
+        data.writeInt32(uid);
+        data.writeInt32(handle);
+        status_t err = mBatteryStatService->transact(
+                TRANSACTION_noteStopSensor, data, &reply, 0);
+        err = reply.readExceptionCode();
+        return err;
+    }
+
+public:
+    void enableSensor(int handle) {
+        if (mBatteryStatService != 0) {
+            int uid = IPCThreadState::self()->getCallingUid();
+            int64_t identity = IPCThreadState::self()->clearCallingIdentity();
+            noteStartSensor(uid, handle);
+            IPCThreadState::self()->restoreCallingIdentity(identity);
+        }
+    }
+    void disableSensor(int handle) {
+        if (mBatteryStatService != 0) {
+            int uid = IPCThreadState::self()->getCallingUid();
+            int64_t identity = IPCThreadState::self()->clearCallingIdentity();
+            noteStopSensor(uid, handle);
+            IPCThreadState::self()->restoreCallingIdentity(identity);
+        }
+    }
+};
+
+const String16 BatteryService::DESCRIPTOR("com.android.internal.app.IBatteryStats");
+
+ANDROID_SINGLETON_STATIC_INSTANCE(BatteryService)
+
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE(SensorDevice)
+
+SensorDevice::SensorDevice()
+    :  mSensorDevice(0),
+       mSensorModule(0)
+{
+    status_t err = hw_get_module(SENSORS_HARDWARE_MODULE_ID,
+            (hw_module_t const**)&mSensorModule);
+
+    ALOGE_IF(err, "couldn't load %s module (%s)",
+            SENSORS_HARDWARE_MODULE_ID, strerror(-err));
+
+    if (mSensorModule) {
+        err = sensors_open(&mSensorModule->common, &mSensorDevice);
+
+        ALOGE_IF(err, "couldn't open device for module %s (%s)",
+                SENSORS_HARDWARE_MODULE_ID, strerror(-err));
+
+        if (mSensorDevice) {
+            sensor_t const* list;
+            ssize_t count = mSensorModule->get_sensors_list(mSensorModule, &list);
+            mActivationCount.setCapacity(count);
+            Info model;
+            for (size_t i=0 ; i<size_t(count) ; i++) {
+                mActivationCount.add(list[i].handle, model);
+                mSensorDevice->activate(mSensorDevice, list[i].handle, 0);
+            }
+        }
+    }
+}
+
+void SensorDevice::dump(String8& result, char* buffer, size_t SIZE)
+{
+    if (!mSensorModule) return;
+    sensor_t const* list;
+    ssize_t count = mSensorModule->get_sensors_list(mSensorModule, &list);
+
+    snprintf(buffer, SIZE, "%d h/w sensors:\n", int(count));
+    result.append(buffer);
+
+    Mutex::Autolock _l(mLock);
+    for (size_t i=0 ; i<size_t(count) ; i++) {
+        const Info& info = mActivationCount.valueFor(list[i].handle);
+        snprintf(buffer, SIZE, "handle=0x%08x, active-count=%d, rates(ms)={ ",
+                list[i].handle,
+                info.rates.size());
+        result.append(buffer);
+        for (size_t j=0 ; j<info.rates.size() ; j++) {
+            snprintf(buffer, SIZE, "%4.1f%s",
+                    info.rates.valueAt(j) / 1e6f,
+                    j<info.rates.size()-1 ? ", " : "");
+            result.append(buffer);
+        }
+        snprintf(buffer, SIZE, " }, selected=%4.1f ms\n",  info.delay / 1e6f);
+        result.append(buffer);
+    }
+}
+
+ssize_t SensorDevice::getSensorList(sensor_t const** list) {
+    if (!mSensorModule) return NO_INIT;
+    ssize_t count = mSensorModule->get_sensors_list(mSensorModule, list);
+    return count;
+}
+
+status_t SensorDevice::initCheck() const {
+    return mSensorDevice && mSensorModule ? NO_ERROR : NO_INIT;
+}
+
+ssize_t SensorDevice::poll(sensors_event_t* buffer, size_t count) {
+    if (!mSensorDevice) return NO_INIT;
+    ssize_t c;
+    do {
+        c = mSensorDevice->poll(mSensorDevice, buffer, count);
+    } while (c == -EINTR);
+    return c;
+}
+
+status_t SensorDevice::activate(void* ident, int handle, int enabled)
+{
+    if (!mSensorDevice) return NO_INIT;
+    status_t err(NO_ERROR);
+    bool actuateHardware = false;
+
+    Info& info( mActivationCount.editValueFor(handle) );
+
+
+    ALOGD_IF(DEBUG_CONNECTIONS,
+            "SensorDevice::activate: ident=%p, handle=0x%08x, enabled=%d, count=%d",
+            ident, handle, enabled, info.rates.size());
+
+    if (enabled) {
+        Mutex::Autolock _l(mLock);
+        ALOGD_IF(DEBUG_CONNECTIONS, "... index=%ld",
+                info.rates.indexOfKey(ident));
+
+        if (info.rates.indexOfKey(ident) < 0) {
+            info.rates.add(ident, DEFAULT_EVENTS_PERIOD);
+            if (info.rates.size() == 1) {
+                actuateHardware = true;
+            }
+        } else {
+            // sensor was already activated for this ident
+        }
+    } else {
+        Mutex::Autolock _l(mLock);
+        ALOGD_IF(DEBUG_CONNECTIONS, "... index=%ld",
+                info.rates.indexOfKey(ident));
+
+        ssize_t idx = info.rates.removeItem(ident);
+        if (idx >= 0) {
+            if (info.rates.size() == 0) {
+                actuateHardware = true;
+            }
+        } else {
+            // sensor wasn't enabled for this ident
+        }
+    }
+
+    if (actuateHardware) {
+        ALOGD_IF(DEBUG_CONNECTIONS, "\t>>> actuating h/w");
+
+        err = mSensorDevice->activate(mSensorDevice, handle, enabled);
+        if (enabled) {
+            ALOGE_IF(err, "Error activating sensor %d (%s)", handle, strerror(-err));
+            if (err == 0) {
+                BatteryService::getInstance().enableSensor(handle);
+            }
+        } else {
+            if (err == 0) {
+                BatteryService::getInstance().disableSensor(handle);
+            }
+        }
+    }
+
+    { // scope for the lock
+        Mutex::Autolock _l(mLock);
+        nsecs_t ns = info.selectDelay();
+        mSensorDevice->setDelay(mSensorDevice, handle, ns);
+    }
+
+    return err;
+}
+
+status_t SensorDevice::setDelay(void* ident, int handle, int64_t ns)
+{
+    if (!mSensorDevice) return NO_INIT;
+    Mutex::Autolock _l(mLock);
+    Info& info( mActivationCount.editValueFor(handle) );
+    status_t err = info.setDelayForIdent(ident, ns);
+    if (err < 0) return err;
+    ns = info.selectDelay();
+    return mSensorDevice->setDelay(mSensorDevice, handle, ns);
+}
+
+// ---------------------------------------------------------------------------
+
+status_t SensorDevice::Info::setDelayForIdent(void* ident, int64_t ns)
+{
+    ssize_t index = rates.indexOfKey(ident);
+    if (index < 0) {
+        ALOGE("Info::setDelayForIdent(ident=%p, ns=%lld) failed (%s)",
+                ident, ns, strerror(-index));
+        return BAD_INDEX;
+    }
+    rates.editValueAt(index) = ns;
+    return NO_ERROR;
+}
+
+nsecs_t SensorDevice::Info::selectDelay()
+{
+    nsecs_t ns = rates.valueAt(0);
+    for (size_t i=1 ; i<rates.size() ; i++) {
+        nsecs_t cur = rates.valueAt(i);
+        if (cur < ns) {
+            ns = cur;
+        }
+    }
+    delay = ns;
+    return ns;
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/SensorDevice.h b/services/sensorservice/SensorDevice.h
new file mode 100644
index 0000000..728b6cb
--- /dev/null
+++ b/services/sensorservice/SensorDevice.h
@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2010 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_SENSOR_DEVICE_H
+#define ANDROID_SENSOR_DEVICE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/KeyedVector.h>
+#include <utils/Singleton.h>
+#include <utils/String8.h>
+
+#include <gui/Sensor.h>
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+static const nsecs_t DEFAULT_EVENTS_PERIOD = 200000000; //    5 Hz
+
+class SensorDevice : public Singleton<SensorDevice> {
+    friend class Singleton<SensorDevice>;
+    struct sensors_poll_device_t* mSensorDevice;
+    struct sensors_module_t* mSensorModule;
+    mutable Mutex mLock; // protect mActivationCount[].rates
+    // fixed-size array after construction
+    struct Info {
+        Info() : delay(0) { }
+        KeyedVector<void*, nsecs_t> rates;
+        nsecs_t delay;
+        status_t setDelayForIdent(void* ident, int64_t ns);
+        nsecs_t selectDelay();
+    };
+    DefaultKeyedVector<int, Info> mActivationCount;
+
+    SensorDevice();
+public:
+    ssize_t getSensorList(sensor_t const** list);
+    status_t initCheck() const;
+    ssize_t poll(sensors_event_t* buffer, size_t count);
+    status_t activate(void* ident, int handle, int enabled);
+    status_t setDelay(void* ident, int handle, int64_t ns);
+    void dump(String8& result, char* buffer, size_t SIZE);
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SENSOR_DEVICE_H
diff --git a/services/sensorservice/SensorFusion.cpp b/services/sensorservice/SensorFusion.cpp
new file mode 100644
index 0000000..d23906d
--- /dev/null
+++ b/services/sensorservice/SensorFusion.cpp
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2011 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 "SensorDevice.h"
+#include "SensorFusion.h"
+#include "SensorService.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+ANDROID_SINGLETON_STATIC_INSTANCE(SensorFusion)
+
+SensorFusion::SensorFusion()
+    : mSensorDevice(SensorDevice::getInstance()),
+      mEnabled(false), mGyroTime(0)
+{
+    sensor_t const* list;
+    ssize_t count = mSensorDevice.getSensorList(&list);
+    if (count > 0) {
+        for (size_t i=0 ; i<size_t(count) ; i++) {
+            if (list[i].type == SENSOR_TYPE_ACCELEROMETER) {
+                mAcc = Sensor(list + i);
+            }
+            if (list[i].type == SENSOR_TYPE_MAGNETIC_FIELD) {
+                mMag = Sensor(list + i);
+            }
+            if (list[i].type == SENSOR_TYPE_GYROSCOPE) {
+                mGyro = Sensor(list + i);
+                // 200 Hz for gyro events is a good compromise between precision
+                // and power/cpu usage.
+                mGyroRate = 200;
+                mTargetDelayNs = 1000000000LL/mGyroRate;
+            }
+        }
+        mFusion.init();
+    }
+}
+
+void SensorFusion::process(const sensors_event_t& event) {
+    if (event.type == SENSOR_TYPE_GYROSCOPE) {
+        if (mGyroTime != 0) {
+            const float dT = (event.timestamp - mGyroTime) / 1000000000.0f;
+            const float freq = 1 / dT;
+            if (freq >= 100 && freq<1000) { // filter values obviously wrong
+                const float alpha = 1 / (1 + dT); // 1s time-constant
+                mGyroRate = freq + (mGyroRate - freq)*alpha;
+            }
+        }
+        mGyroTime = event.timestamp;
+        mFusion.handleGyro(vec3_t(event.data), 1.0f/mGyroRate);
+    } else if (event.type == SENSOR_TYPE_MAGNETIC_FIELD) {
+        const vec3_t mag(event.data);
+        mFusion.handleMag(mag);
+    } else if (event.type == SENSOR_TYPE_ACCELEROMETER) {
+        const vec3_t acc(event.data);
+        mFusion.handleAcc(acc);
+        mAttitude = mFusion.getAttitude();
+    }
+}
+
+template <typename T> inline T min(T a, T b) { return a<b ? a : b; }
+template <typename T> inline T max(T a, T b) { return a>b ? a : b; }
+
+status_t SensorFusion::activate(void* ident, bool enabled) {
+
+    ALOGD_IF(DEBUG_CONNECTIONS,
+            "SensorFusion::activate(ident=%p, enabled=%d)",
+            ident, enabled);
+
+    const ssize_t idx = mClients.indexOf(ident);
+    if (enabled) {
+        if (idx < 0) {
+            mClients.add(ident);
+        }
+    } else {
+        if (idx >= 0) {
+            mClients.removeItemsAt(idx);
+        }
+    }
+
+    mSensorDevice.activate(ident, mAcc.getHandle(), enabled);
+    mSensorDevice.activate(ident, mMag.getHandle(), enabled);
+    mSensorDevice.activate(ident, mGyro.getHandle(), enabled);
+
+    const bool newState = mClients.size() != 0;
+    if (newState != mEnabled) {
+        mEnabled = newState;
+        if (newState) {
+            mFusion.init();
+            mGyroTime = 0;
+        }
+    }
+    return NO_ERROR;
+}
+
+status_t SensorFusion::setDelay(void* ident, int64_t ns) {
+    mSensorDevice.setDelay(ident, mAcc.getHandle(), ns);
+    mSensorDevice.setDelay(ident, mMag.getHandle(), ms2ns(20));
+    mSensorDevice.setDelay(ident, mGyro.getHandle(), mTargetDelayNs);
+    return NO_ERROR;
+}
+
+
+float SensorFusion::getPowerUsage() const {
+    float power =   mAcc.getPowerUsage() +
+                    mMag.getPowerUsage() +
+                    mGyro.getPowerUsage();
+    return power;
+}
+
+int32_t SensorFusion::getMinDelay() const {
+    return mAcc.getMinDelay();
+}
+
+void SensorFusion::dump(String8& result, char* buffer, size_t SIZE) {
+    const Fusion& fusion(mFusion);
+    snprintf(buffer, SIZE, "9-axis fusion %s (%d clients), gyro-rate=%7.2fHz, "
+            "q=< %g, %g, %g, %g > (%g), "
+            "b=< %g, %g, %g >\n",
+            mEnabled ? "enabled" : "disabled",
+            mClients.size(),
+            mGyroRate,
+            fusion.getAttitude().x,
+            fusion.getAttitude().y,
+            fusion.getAttitude().z,
+            fusion.getAttitude().w,
+            length(fusion.getAttitude()),
+            fusion.getBias().x,
+            fusion.getBias().y,
+            fusion.getBias().z);
+    result.append(buffer);
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
diff --git a/services/sensorservice/SensorFusion.h b/services/sensorservice/SensorFusion.h
new file mode 100644
index 0000000..4c99bcb
--- /dev/null
+++ b/services/sensorservice/SensorFusion.h
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011 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_SENSOR_FUSION_H
+#define ANDROID_SENSOR_FUSION_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/SortedVector.h>
+#include <utils/Singleton.h>
+#include <utils/String8.h>
+
+#include <gui/Sensor.h>
+
+#include "Fusion.h"
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorDevice;
+
+class SensorFusion : public Singleton<SensorFusion> {
+    friend class Singleton<SensorFusion>;
+
+    SensorDevice& mSensorDevice;
+    Sensor mAcc;
+    Sensor mMag;
+    Sensor mGyro;
+    Fusion mFusion;
+    bool mEnabled;
+    float mGyroRate;
+    nsecs_t mTargetDelayNs;
+    nsecs_t mGyroTime;
+    vec4_t mAttitude;
+    SortedVector<void*> mClients;
+
+    SensorFusion();
+
+public:
+    void process(const sensors_event_t& event);
+
+    bool isEnabled() const { return mEnabled; }
+    bool hasEstimate() const { return mFusion.hasEstimate(); }
+    mat33_t getRotationMatrix() const { return mFusion.getRotationMatrix(); }
+    vec4_t getAttitude() const { return mAttitude; }
+    vec3_t getGyroBias() const { return mFusion.getBias(); }
+    float getEstimatedRate() const { return mGyroRate; }
+
+    status_t activate(void* ident, bool enabled);
+    status_t setDelay(void* ident, int64_t ns);
+
+    float getPowerUsage() const;
+    int32_t getMinDelay() const;
+
+    void dump(String8& result, char* buffer, size_t SIZE);
+};
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SENSOR_FUSION_H
diff --git a/services/sensorservice/SensorInterface.cpp b/services/sensorservice/SensorInterface.cpp
new file mode 100644
index 0000000..468aa61
--- /dev/null
+++ b/services/sensorservice/SensorInterface.cpp
@@ -0,0 +1,63 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <sys/types.h>
+
+#include <cutils/log.h>
+
+#include "SensorInterface.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+SensorInterface::~SensorInterface()
+{
+}
+
+// ---------------------------------------------------------------------------
+
+HardwareSensor::HardwareSensor(const sensor_t& sensor)
+    : mSensorDevice(SensorDevice::getInstance()),
+      mSensor(&sensor)
+{
+    ALOGI("%s", sensor.name);
+}
+
+HardwareSensor::~HardwareSensor() {
+}
+
+bool HardwareSensor::process(sensors_event_t* outEvent,
+        const sensors_event_t& event) {
+    *outEvent = event;
+    return true;
+}
+
+status_t HardwareSensor::activate(void* ident, bool enabled) {
+    return mSensorDevice.activate(ident, mSensor.getHandle(), enabled);
+}
+
+status_t HardwareSensor::setDelay(void* ident, int handle, int64_t ns) {
+    return mSensorDevice.setDelay(ident, handle, ns);
+}
+
+Sensor HardwareSensor::getSensor() const {
+    return mSensor;
+}
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
diff --git a/services/sensorservice/SensorInterface.h b/services/sensorservice/SensorInterface.h
new file mode 100644
index 0000000..fb357d7
--- /dev/null
+++ b/services/sensorservice/SensorInterface.h
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2010 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_SENSOR_INTERFACE_H
+#define ANDROID_SENSOR_INTERFACE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/Sensor.h>
+
+#include "SensorDevice.h"
+
+// ---------------------------------------------------------------------------
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorInterface {
+public:
+    virtual ~SensorInterface();
+
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event) = 0;
+
+    virtual status_t activate(void* ident, bool enabled) = 0;
+    virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0;
+    virtual Sensor getSensor() const = 0;
+    virtual bool isVirtual() const = 0;
+};
+
+// ---------------------------------------------------------------------------
+
+class HardwareSensor : public SensorInterface
+{
+    SensorDevice& mSensorDevice;
+    Sensor mSensor;
+
+public:
+    HardwareSensor(const sensor_t& sensor);
+
+    virtual ~HardwareSensor();
+
+    virtual bool process(sensors_event_t* outEvent,
+            const sensors_event_t& event);
+
+    virtual status_t activate(void* ident, bool enabled);
+    virtual status_t setDelay(void* ident, int handle, int64_t ns);
+    virtual Sensor getSensor() const;
+    virtual bool isVirtual() const { return false; }
+};
+
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SENSOR_INTERFACE_H
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
new file mode 100644
index 0000000..7ab34c9
--- /dev/null
+++ b/services/sensorservice/SensorService.cpp
@@ -0,0 +1,657 @@
+/*
+ * Copyright (C) 2010 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 <stdint.h>
+#include <math.h>
+#include <sys/types.h>
+
+#include <cutils/properties.h>
+
+#include <utils/SortedVector.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+#include <utils/Atomic.h>
+#include <utils/Errors.h>
+#include <utils/RefBase.h>
+#include <utils/Singleton.h>
+#include <utils/String16.h>
+
+#include <binder/BinderService.h>
+#include <binder/IServiceManager.h>
+#include <binder/PermissionCache.h>
+
+#include <gui/ISensorServer.h>
+#include <gui/ISensorEventConnection.h>
+#include <gui/SensorEventQueue.h>
+
+#include <hardware/sensors.h>
+
+#include "CorrectedGyroSensor.h"
+#include "GravitySensor.h"
+#include "LinearAccelerationSensor.h"
+#include "OrientationSensor.h"
+#include "RotationVectorSensor.h"
+#include "SensorFusion.h"
+#include "SensorService.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+/*
+ * Notes:
+ *
+ * - what about a gyro-corrected magnetic-field sensor?
+ * - run mag sensor from time to time to force calibration
+ * - gravity sensor length is wrong (=> drift in linear-acc sensor)
+ *
+ */
+
+SensorService::SensorService()
+    : mInitCheck(NO_INIT)
+{
+}
+
+void SensorService::onFirstRef()
+{
+    ALOGD("nuSensorService starting...");
+
+    SensorDevice& dev(SensorDevice::getInstance());
+
+    if (dev.initCheck() == NO_ERROR) {
+        sensor_t const* list;
+        ssize_t count = dev.getSensorList(&list);
+        if (count > 0) {
+            ssize_t orientationIndex = -1;
+            bool hasGyro = false;
+            uint32_t virtualSensorsNeeds =
+                    (1<<SENSOR_TYPE_GRAVITY) |
+                    (1<<SENSOR_TYPE_LINEAR_ACCELERATION) |
+                    (1<<SENSOR_TYPE_ROTATION_VECTOR);
+
+            mLastEventSeen.setCapacity(count);
+            for (ssize_t i=0 ; i<count ; i++) {
+                registerSensor( new HardwareSensor(list[i]) );
+                switch (list[i].type) {
+                    case SENSOR_TYPE_ORIENTATION:
+                        orientationIndex = i;
+                        break;
+                    case SENSOR_TYPE_GYROSCOPE:
+                        hasGyro = true;
+                        break;
+                    case SENSOR_TYPE_GRAVITY:
+                    case SENSOR_TYPE_LINEAR_ACCELERATION:
+                    case SENSOR_TYPE_ROTATION_VECTOR:
+                        virtualSensorsNeeds &= ~(1<<list[i].type);
+                        break;
+                }
+            }
+
+            // it's safe to instantiate the SensorFusion object here
+            // (it wants to be instantiated after h/w sensors have been
+            // registered)
+            const SensorFusion& fusion(SensorFusion::getInstance());
+
+            if (hasGyro) {
+                // Always instantiate Android's virtual sensors. Since they are
+                // instantiated behind sensors from the HAL, they won't
+                // interfere with applications, unless they looks specifically
+                // for them (by name).
+
+                registerVirtualSensor( new RotationVectorSensor() );
+                registerVirtualSensor( new GravitySensor(list, count) );
+                registerVirtualSensor( new LinearAccelerationSensor(list, count) );
+
+                // these are optional
+                registerVirtualSensor( new OrientationSensor() );
+                registerVirtualSensor( new CorrectedGyroSensor(list, count) );
+            }
+
+            // build the sensor list returned to users
+            mUserSensorList = mSensorList;
+
+            if (hasGyro) {
+                // virtual debugging sensors are not added to mUserSensorList
+                registerVirtualSensor( new GyroDriftSensor() );
+            }
+
+            if (hasGyro &&
+                    (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR))) {
+                // if we have the fancy sensor fusion, and it's not provided by the
+                // HAL, use our own (fused) orientation sensor by removing the
+                // HAL supplied one form the user list.
+                if (orientationIndex >= 0) {
+                    mUserSensorList.removeItemsAt(orientationIndex);
+                }
+            }
+
+            // debugging sensor list
+            for (size_t i=0 ; i<mSensorList.size() ; i++) {
+                switch (mSensorList[i].getType()) {
+                    case SENSOR_TYPE_GRAVITY:
+                    case SENSOR_TYPE_LINEAR_ACCELERATION:
+                    case SENSOR_TYPE_ROTATION_VECTOR:
+                        if (strstr(mSensorList[i].getVendor().string(), "Google")) {
+                            mUserSensorListDebug.add(mSensorList[i]);
+                        }
+                        break;
+                    default:
+                        mUserSensorListDebug.add(mSensorList[i]);
+                        break;
+                }
+            }
+
+            run("SensorService", PRIORITY_URGENT_DISPLAY);
+            mInitCheck = NO_ERROR;
+        }
+    }
+}
+
+void SensorService::registerSensor(SensorInterface* s)
+{
+    sensors_event_t event;
+    memset(&event, 0, sizeof(event));
+
+    const Sensor sensor(s->getSensor());
+    // add to the sensor list (returned to clients)
+    mSensorList.add(sensor);
+    // add to our handle->SensorInterface mapping
+    mSensorMap.add(sensor.getHandle(), s);
+    // create an entry in the mLastEventSeen array
+    mLastEventSeen.add(sensor.getHandle(), event);
+}
+
+void SensorService::registerVirtualSensor(SensorInterface* s)
+{
+    registerSensor(s);
+    mVirtualSensorList.add( s );
+}
+
+SensorService::~SensorService()
+{
+    for (size_t i=0 ; i<mSensorMap.size() ; i++)
+        delete mSensorMap.valueAt(i);
+}
+
+static const String16 sDump("android.permission.DUMP");
+
+status_t SensorService::dump(int fd, const Vector<String16>& args)
+{
+    const size_t SIZE = 1024;
+    char buffer[SIZE];
+    String8 result;
+    if (!PermissionCache::checkCallingPermission(sDump)) {
+        snprintf(buffer, SIZE, "Permission Denial: "
+                "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
+                IPCThreadState::self()->getCallingPid(),
+                IPCThreadState::self()->getCallingUid());
+        result.append(buffer);
+    } else {
+        Mutex::Autolock _l(mLock);
+        snprintf(buffer, SIZE, "Sensor List:\n");
+        result.append(buffer);
+        for (size_t i=0 ; i<mSensorList.size() ; i++) {
+            const Sensor& s(mSensorList[i]);
+            const sensors_event_t& e(mLastEventSeen.valueFor(s.getHandle()));
+            snprintf(buffer, SIZE,
+                    "%-48s| %-32s | 0x%08x | maxRate=%7.2fHz | "
+                    "last=<%5.1f,%5.1f,%5.1f>\n",
+                    s.getName().string(),
+                    s.getVendor().string(),
+                    s.getHandle(),
+                    s.getMinDelay() ? (1000000.0f / s.getMinDelay()) : 0.0f,
+                    e.data[0], e.data[1], e.data[2]);
+            result.append(buffer);
+        }
+        SensorFusion::getInstance().dump(result, buffer, SIZE);
+        SensorDevice::getInstance().dump(result, buffer, SIZE);
+
+        snprintf(buffer, SIZE, "%d active connections\n",
+                mActiveConnections.size());
+        result.append(buffer);
+        snprintf(buffer, SIZE, "Active sensors:\n");
+        result.append(buffer);
+        for (size_t i=0 ; i<mActiveSensors.size() ; i++) {
+            int handle = mActiveSensors.keyAt(i);
+            snprintf(buffer, SIZE, "%s (handle=0x%08x, connections=%d)\n",
+                    getSensorName(handle).string(),
+                    handle,
+                    mActiveSensors.valueAt(i)->getNumConnections());
+            result.append(buffer);
+        }
+    }
+    write(fd, result.string(), result.size());
+    return NO_ERROR;
+}
+
+bool SensorService::threadLoop()
+{
+    ALOGD("nuSensorService thread starting...");
+
+    const size_t numEventMax = 16;
+    const size_t minBufferSize = numEventMax + numEventMax * mVirtualSensorList.size();
+    sensors_event_t buffer[minBufferSize];
+    sensors_event_t scratch[minBufferSize];
+    SensorDevice& device(SensorDevice::getInstance());
+    const size_t vcount = mVirtualSensorList.size();
+
+    ssize_t count;
+    do {
+        count = device.poll(buffer, numEventMax);
+        if (count<0) {
+            ALOGE("sensor poll failed (%s)", strerror(-count));
+            break;
+        }
+
+        recordLastValue(buffer, count);
+
+        // handle virtual sensors
+        if (count && vcount) {
+            sensors_event_t const * const event = buffer;
+            const DefaultKeyedVector<int, SensorInterface*> virtualSensors(
+                    getActiveVirtualSensors());
+            const size_t activeVirtualSensorCount = virtualSensors.size();
+            if (activeVirtualSensorCount) {
+                size_t k = 0;
+                SensorFusion& fusion(SensorFusion::getInstance());
+                if (fusion.isEnabled()) {
+                    for (size_t i=0 ; i<size_t(count) ; i++) {
+                        fusion.process(event[i]);
+                    }
+                }
+                for (size_t i=0 ; i<size_t(count) && k<minBufferSize ; i++) {
+                    for (size_t j=0 ; j<activeVirtualSensorCount ; j++) {
+                        if (count + k >= minBufferSize) {
+                            ALOGE("buffer too small to hold all events: "
+                                    "count=%u, k=%u, size=%u",
+                                    count, k, minBufferSize);
+                            break;
+                        }
+                        sensors_event_t out;
+                        SensorInterface* si = virtualSensors.valueAt(j);
+                        if (si->process(&out, event[i])) {
+                            buffer[count + k] = out;
+                            k++;
+                        }
+                    }
+                }
+                if (k) {
+                    // record the last synthesized values
+                    recordLastValue(&buffer[count], k);
+                    count += k;
+                    // sort the buffer by time-stamps
+                    sortEventBuffer(buffer, count);
+                }
+            }
+        }
+
+        // send our events to clients...
+        const SortedVector< wp<SensorEventConnection> > activeConnections(
+                getActiveConnections());
+        size_t numConnections = activeConnections.size();
+        for (size_t i=0 ; i<numConnections ; i++) {
+            sp<SensorEventConnection> connection(
+                    activeConnections[i].promote());
+            if (connection != 0) {
+                connection->sendEvents(buffer, count, scratch);
+            }
+        }
+    } while (count >= 0 || Thread::exitPending());
+
+    ALOGW("Exiting SensorService::threadLoop => aborting...");
+    abort();
+    return false;
+}
+
+void SensorService::recordLastValue(
+        sensors_event_t const * buffer, size_t count)
+{
+    Mutex::Autolock _l(mLock);
+
+    // record the last event for each sensor
+    int32_t prev = buffer[0].sensor;
+    for (size_t i=1 ; i<count ; i++) {
+        // record the last event of each sensor type in this buffer
+        int32_t curr = buffer[i].sensor;
+        if (curr != prev) {
+            mLastEventSeen.editValueFor(prev) = buffer[i-1];
+            prev = curr;
+        }
+    }
+    mLastEventSeen.editValueFor(prev) = buffer[count-1];
+}
+
+void SensorService::sortEventBuffer(sensors_event_t* buffer, size_t count)
+{
+    struct compar {
+        static int cmp(void const* lhs, void const* rhs) {
+            sensors_event_t const* l = static_cast<sensors_event_t const*>(lhs);
+            sensors_event_t const* r = static_cast<sensors_event_t const*>(rhs);
+            return l->timestamp - r->timestamp;
+        }
+    };
+    qsort(buffer, count, sizeof(sensors_event_t), compar::cmp);
+}
+
+SortedVector< wp<SensorService::SensorEventConnection> >
+SensorService::getActiveConnections() const
+{
+    Mutex::Autolock _l(mLock);
+    return mActiveConnections;
+}
+
+DefaultKeyedVector<int, SensorInterface*>
+SensorService::getActiveVirtualSensors() const
+{
+    Mutex::Autolock _l(mLock);
+    return mActiveVirtualSensors;
+}
+
+String8 SensorService::getSensorName(int handle) const {
+    size_t count = mUserSensorList.size();
+    for (size_t i=0 ; i<count ; i++) {
+        const Sensor& sensor(mUserSensorList[i]);
+        if (sensor.getHandle() == handle) {
+            return sensor.getName();
+        }
+    }
+    String8 result("unknown");
+    return result;
+}
+
+Vector<Sensor> SensorService::getSensorList()
+{
+    char value[PROPERTY_VALUE_MAX];
+    property_get("debug.sensors", value, "0");
+    if (atoi(value)) {
+        return mUserSensorListDebug;
+    }
+    return mUserSensorList;
+}
+
+sp<ISensorEventConnection> SensorService::createSensorEventConnection()
+{
+    sp<SensorEventConnection> result(new SensorEventConnection(this));
+    return result;
+}
+
+void SensorService::cleanupConnection(SensorEventConnection* c)
+{
+    Mutex::Autolock _l(mLock);
+    const wp<SensorEventConnection> connection(c);
+    size_t size = mActiveSensors.size();
+    ALOGD_IF(DEBUG_CONNECTIONS, "%d active sensors", size);
+    for (size_t i=0 ; i<size ; ) {
+        int handle = mActiveSensors.keyAt(i);
+        if (c->hasSensor(handle)) {
+            ALOGD_IF(DEBUG_CONNECTIONS, "%i: disabling handle=0x%08x", i, handle);
+            SensorInterface* sensor = mSensorMap.valueFor( handle );
+            ALOGE_IF(!sensor, "mSensorMap[handle=0x%08x] is null!", handle);
+            if (sensor) {
+                sensor->activate(c, false);
+            }
+        }
+        SensorRecord* rec = mActiveSensors.valueAt(i);
+        ALOGE_IF(!rec, "mActiveSensors[%d] is null (handle=0x%08x)!", i, handle);
+        ALOGD_IF(DEBUG_CONNECTIONS,
+                "removing connection %p for sensor[%d].handle=0x%08x",
+                c, i, handle);
+
+        if (rec && rec->removeConnection(connection)) {
+            ALOGD_IF(DEBUG_CONNECTIONS, "... and it was the last connection");
+            mActiveSensors.removeItemsAt(i, 1);
+            mActiveVirtualSensors.removeItem(handle);
+            delete rec;
+            size--;
+        } else {
+            i++;
+        }
+    }
+    mActiveConnections.remove(connection);
+}
+
+status_t SensorService::enable(const sp<SensorEventConnection>& connection,
+        int handle)
+{
+    if (mInitCheck != NO_ERROR)
+        return mInitCheck;
+
+    Mutex::Autolock _l(mLock);
+    SensorInterface* sensor = mSensorMap.valueFor(handle);
+    status_t err = sensor ? sensor->activate(connection.get(), true) : status_t(BAD_VALUE);
+    if (err == NO_ERROR) {
+        SensorRecord* rec = mActiveSensors.valueFor(handle);
+        if (rec == 0) {
+            rec = new SensorRecord(connection);
+            mActiveSensors.add(handle, rec);
+            if (sensor->isVirtual()) {
+                mActiveVirtualSensors.add(handle, sensor);
+            }
+        } else {
+            if (rec->addConnection(connection)) {
+                // this sensor is already activated, but we are adding a
+                // connection that uses it. Immediately send down the last
+                // known value of the requested sensor if it's not a
+                // "continuous" sensor.
+                if (sensor->getSensor().getMinDelay() == 0) {
+                    sensors_event_t scratch;
+                    sensors_event_t& event(mLastEventSeen.editValueFor(handle));
+                    if (event.version == sizeof(sensors_event_t)) {
+                        connection->sendEvents(&event, 1);
+                    }
+                }
+            }
+        }
+        if (err == NO_ERROR) {
+            // connection now active
+            if (connection->addSensor(handle)) {
+                // the sensor was added (which means it wasn't already there)
+                // so, see if this connection becomes active
+                if (mActiveConnections.indexOf(connection) < 0) {
+                    mActiveConnections.add(connection);
+                }
+            }
+        }
+    }
+    return err;
+}
+
+status_t SensorService::disable(const sp<SensorEventConnection>& connection,
+        int handle)
+{
+    if (mInitCheck != NO_ERROR)
+        return mInitCheck;
+
+    status_t err = NO_ERROR;
+    Mutex::Autolock _l(mLock);
+    SensorRecord* rec = mActiveSensors.valueFor(handle);
+    if (rec) {
+        // see if this connection becomes inactive
+        connection->removeSensor(handle);
+        if (connection->hasAnySensor() == false) {
+            mActiveConnections.remove(connection);
+        }
+        // see if this sensor becomes inactive
+        if (rec->removeConnection(connection)) {
+            mActiveSensors.removeItem(handle);
+            mActiveVirtualSensors.removeItem(handle);
+            delete rec;
+        }
+        SensorInterface* sensor = mSensorMap.valueFor(handle);
+        err = sensor ? sensor->activate(connection.get(), false) : status_t(BAD_VALUE);
+    }
+    return err;
+}
+
+status_t SensorService::setEventRate(const sp<SensorEventConnection>& connection,
+        int handle, nsecs_t ns)
+{
+    if (mInitCheck != NO_ERROR)
+        return mInitCheck;
+
+    SensorInterface* sensor = mSensorMap.valueFor(handle);
+    if (!sensor)
+        return BAD_VALUE;
+
+    if (ns < 0)
+        return BAD_VALUE;
+
+    nsecs_t minDelayNs = sensor->getSensor().getMinDelayNs();
+    if (ns < minDelayNs) {
+        ns = minDelayNs;
+    }
+
+    if (ns < MINIMUM_EVENTS_PERIOD)
+        ns = MINIMUM_EVENTS_PERIOD;
+
+    return sensor->setDelay(connection.get(), handle, ns);
+}
+
+// ---------------------------------------------------------------------------
+
+SensorService::SensorRecord::SensorRecord(
+        const sp<SensorEventConnection>& connection)
+{
+    mConnections.add(connection);
+}
+
+bool SensorService::SensorRecord::addConnection(
+        const sp<SensorEventConnection>& connection)
+{
+    if (mConnections.indexOf(connection) < 0) {
+        mConnections.add(connection);
+        return true;
+    }
+    return false;
+}
+
+bool SensorService::SensorRecord::removeConnection(
+        const wp<SensorEventConnection>& connection)
+{
+    ssize_t index = mConnections.indexOf(connection);
+    if (index >= 0) {
+        mConnections.removeItemsAt(index, 1);
+    }
+    return mConnections.size() ? false : true;
+}
+
+// ---------------------------------------------------------------------------
+
+SensorService::SensorEventConnection::SensorEventConnection(
+        const sp<SensorService>& service)
+    : mService(service), mChannel(new BitTube())
+{
+}
+
+SensorService::SensorEventConnection::~SensorEventConnection()
+{
+    ALOGD_IF(DEBUG_CONNECTIONS, "~SensorEventConnection(%p)", this);
+    mService->cleanupConnection(this);
+}
+
+void SensorService::SensorEventConnection::onFirstRef()
+{
+}
+
+bool SensorService::SensorEventConnection::addSensor(int32_t handle) {
+    Mutex::Autolock _l(mConnectionLock);
+    if (mSensorInfo.indexOf(handle) <= 0) {
+        mSensorInfo.add(handle);
+        return true;
+    }
+    return false;
+}
+
+bool SensorService::SensorEventConnection::removeSensor(int32_t handle) {
+    Mutex::Autolock _l(mConnectionLock);
+    if (mSensorInfo.remove(handle) >= 0) {
+        return true;
+    }
+    return false;
+}
+
+bool SensorService::SensorEventConnection::hasSensor(int32_t handle) const {
+    Mutex::Autolock _l(mConnectionLock);
+    return mSensorInfo.indexOf(handle) >= 0;
+}
+
+bool SensorService::SensorEventConnection::hasAnySensor() const {
+    Mutex::Autolock _l(mConnectionLock);
+    return mSensorInfo.size() ? true : false;
+}
+
+status_t SensorService::SensorEventConnection::sendEvents(
+        sensors_event_t const* buffer, size_t numEvents,
+        sensors_event_t* scratch)
+{
+    // filter out events not for this connection
+    size_t count = 0;
+    if (scratch) {
+        Mutex::Autolock _l(mConnectionLock);
+        size_t i=0;
+        while (i<numEvents) {
+            const int32_t curr = buffer[i].sensor;
+            if (mSensorInfo.indexOf(curr) >= 0) {
+                do {
+                    scratch[count++] = buffer[i++];
+                } while ((i<numEvents) && (buffer[i].sensor == curr));
+            } else {
+                i++;
+            }
+        }
+    } else {
+        scratch = const_cast<sensors_event_t *>(buffer);
+        count = numEvents;
+    }
+
+    // NOTE: ASensorEvent and sensors_event_t are the same type
+    ssize_t size = SensorEventQueue::write(mChannel,
+            reinterpret_cast<ASensorEvent const*>(scratch), count);
+    if (size == -EAGAIN) {
+        // the destination doesn't accept events anymore, it's probably
+        // full. For now, we just drop the events on the floor.
+        //ALOGW("dropping %d events on the floor", count);
+        return size;
+    }
+
+    return size < 0 ? status_t(size) : status_t(NO_ERROR);
+}
+
+sp<BitTube> SensorService::SensorEventConnection::getSensorChannel() const
+{
+    return mChannel;
+}
+
+status_t SensorService::SensorEventConnection::enableDisable(
+        int handle, bool enabled)
+{
+    status_t err;
+    if (enabled) {
+        err = mService->enable(this, handle);
+    } else {
+        err = mService->disable(this, handle);
+    }
+    return err;
+}
+
+status_t SensorService::SensorEventConnection::setEventRate(
+        int handle, nsecs_t ns)
+{
+    return mService->setEventRate(this, handle, ns);
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
diff --git a/services/sensorservice/SensorService.h b/services/sensorservice/SensorService.h
new file mode 100644
index 0000000..54a76e8
--- /dev/null
+++ b/services/sensorservice/SensorService.h
@@ -0,0 +1,143 @@
+/*
+ * Copyright (C) 2010 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_SENSOR_SERVICE_H
+#define ANDROID_SENSOR_SERVICE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Vector.h>
+#include <utils/SortedVector.h>
+#include <utils/KeyedVector.h>
+#include <utils/threads.h>
+#include <utils/RefBase.h>
+
+#include <binder/BinderService.h>
+
+#include <gui/Sensor.h>
+#include <gui/BitTube.h>
+#include <gui/ISensorServer.h>
+#include <gui/ISensorEventConnection.h>
+
+#include "SensorInterface.h"
+
+// ---------------------------------------------------------------------------
+
+#define DEBUG_CONNECTIONS   false
+
+struct sensors_poll_device_t;
+struct sensors_module_t;
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+class SensorService :
+        public BinderService<SensorService>,
+        public BnSensorServer,
+        protected Thread
+{
+   friend class BinderService<SensorService>;
+
+   static const nsecs_t MINIMUM_EVENTS_PERIOD =   1000000; // 1000 Hz
+
+            SensorService();
+    virtual ~SensorService();
+
+    virtual void onFirstRef();
+
+    // Thread interface
+    virtual bool threadLoop();
+
+    // ISensorServer interface
+    virtual Vector<Sensor> getSensorList();
+    virtual sp<ISensorEventConnection> createSensorEventConnection();
+    virtual status_t dump(int fd, const Vector<String16>& args);
+
+
+    class SensorEventConnection : public BnSensorEventConnection {
+        virtual ~SensorEventConnection();
+        virtual void onFirstRef();
+        virtual sp<BitTube> getSensorChannel() const;
+        virtual status_t enableDisable(int handle, bool enabled);
+        virtual status_t setEventRate(int handle, nsecs_t ns);
+
+        sp<SensorService> const mService;
+        sp<BitTube> const mChannel;
+        mutable Mutex mConnectionLock;
+
+        // protected by SensorService::mLock
+        SortedVector<int> mSensorInfo;
+
+    public:
+        SensorEventConnection(const sp<SensorService>& service);
+
+        status_t sendEvents(sensors_event_t const* buffer, size_t count,
+                sensors_event_t* scratch = NULL);
+        bool hasSensor(int32_t handle) const;
+        bool hasAnySensor() const;
+        bool addSensor(int32_t handle);
+        bool removeSensor(int32_t handle);
+    };
+
+    class SensorRecord {
+        SortedVector< wp<SensorEventConnection> > mConnections;
+    public:
+        SensorRecord(const sp<SensorEventConnection>& connection);
+        bool addConnection(const sp<SensorEventConnection>& connection);
+        bool removeConnection(const wp<SensorEventConnection>& connection);
+        size_t getNumConnections() const { return mConnections.size(); }
+    };
+
+    SortedVector< wp<SensorEventConnection> > getActiveConnections() const;
+    DefaultKeyedVector<int, SensorInterface*> getActiveVirtualSensors() const;
+
+    String8 getSensorName(int handle) const;
+    void recordLastValue(sensors_event_t const * buffer, size_t count);
+    static void sortEventBuffer(sensors_event_t* buffer, size_t count);
+    void registerSensor(SensorInterface* sensor);
+    void registerVirtualSensor(SensorInterface* sensor);
+
+    // constants
+    Vector<Sensor> mSensorList;
+    Vector<Sensor> mUserSensorListDebug;
+    Vector<Sensor> mUserSensorList;
+    DefaultKeyedVector<int, SensorInterface*> mSensorMap;
+    Vector<SensorInterface *> mVirtualSensorList;
+    status_t mInitCheck;
+
+    // protected by mLock
+    mutable Mutex mLock;
+    DefaultKeyedVector<int, SensorRecord*> mActiveSensors;
+    DefaultKeyedVector<int, SensorInterface*> mActiveVirtualSensors;
+    SortedVector< wp<SensorEventConnection> > mActiveConnections;
+
+    // The size of this vector is constant, only the items are mutable
+    KeyedVector<int32_t, sensors_event_t> mLastEventSeen;
+
+public:
+    static char const* getServiceName() { return "sensorservice"; }
+
+    void cleanupConnection(SensorEventConnection* connection);
+    status_t enable(const sp<SensorEventConnection>& connection, int handle);
+    status_t disable(const sp<SensorEventConnection>& connection, int handle);
+    status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns);
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SENSOR_SERVICE_H
diff --git a/services/sensorservice/mat.h b/services/sensorservice/mat.h
new file mode 100644
index 0000000..a76fc91
--- /dev/null
+++ b/services/sensorservice/mat.h
@@ -0,0 +1,393 @@
+/*
+ * Copyright (C) 2011 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_MAT_H
+#define ANDROID_MAT_H
+
+#include "vec.h"
+#include "traits.h"
+
+// -----------------------------------------------------------------------
+
+namespace android {
+
+template <typename TYPE, size_t C, size_t R>
+class mat;
+
+namespace helpers {
+
+template <typename TYPE, size_t C, size_t R>
+mat<TYPE, C, R>& doAssign(
+        mat<TYPE, C, R>& lhs,
+        typename TypeTraits<TYPE>::ParameterType rhs) {
+    for (size_t i=0 ; i<C ; i++)
+        for (size_t j=0 ; j<R ; j++)
+            lhs[i][j] = (i==j) ? rhs : 0;
+    return lhs;
+}
+
+template <typename TYPE, size_t C, size_t R, size_t D>
+mat<TYPE, C, R> PURE doMul(
+        const mat<TYPE, D, R>& lhs,
+        const mat<TYPE, C, D>& rhs)
+{
+    mat<TYPE, C, R> res;
+    for (size_t c=0 ; c<C ; c++) {
+        for (size_t r=0 ; r<R ; r++) {
+            TYPE v(0);
+            for (size_t k=0 ; k<D ; k++) {
+                v += lhs[k][r] * rhs[c][k];
+            }
+            res[c][r] = v;
+        }
+    }
+    return res;
+}
+
+template <typename TYPE, size_t R, size_t D>
+vec<TYPE, R> PURE doMul(
+        const mat<TYPE, D, R>& lhs,
+        const vec<TYPE, D>& rhs)
+{
+    vec<TYPE, R> res;
+    for (size_t r=0 ; r<R ; r++) {
+        TYPE v(0);
+        for (size_t k=0 ; k<D ; k++) {
+            v += lhs[k][r] * rhs[k];
+        }
+        res[r] = v;
+    }
+    return res;
+}
+
+template <typename TYPE, size_t C, size_t R>
+mat<TYPE, C, R> PURE doMul(
+        const vec<TYPE, R>& lhs,
+        const mat<TYPE, C, 1>& rhs)
+{
+    mat<TYPE, C, R> res;
+    for (size_t c=0 ; c<C ; c++) {
+        for (size_t r=0 ; r<R ; r++) {
+            res[c][r] = lhs[r] * rhs[c][0];
+        }
+    }
+    return res;
+}
+
+template <typename TYPE, size_t C, size_t R>
+mat<TYPE, C, R> PURE doMul(
+        const mat<TYPE, C, R>& rhs,
+        typename TypeTraits<TYPE>::ParameterType v)
+{
+    mat<TYPE, C, R> res;
+    for (size_t c=0 ; c<C ; c++) {
+        for (size_t r=0 ; r<R ; r++) {
+            res[c][r] = rhs[c][r] * v;
+        }
+    }
+    return res;
+}
+
+template <typename TYPE, size_t C, size_t R>
+mat<TYPE, C, R> PURE doMul(
+        typename TypeTraits<TYPE>::ParameterType v,
+        const mat<TYPE, C, R>& rhs)
+{
+    mat<TYPE, C, R> res;
+    for (size_t c=0 ; c<C ; c++) {
+        for (size_t r=0 ; r<R ; r++) {
+            res[c][r] = v * rhs[c][r];
+        }
+    }
+    return res;
+}
+
+
+}; // namespace helpers
+
+// -----------------------------------------------------------------------
+
+template <typename TYPE, size_t C, size_t R>
+class mat : public vec< vec<TYPE, R>, C > {
+    typedef typename TypeTraits<TYPE>::ParameterType pTYPE;
+    typedef vec< vec<TYPE, R>, C > base;
+public:
+    // STL-like interface.
+    typedef TYPE value_type;
+    typedef TYPE& reference;
+    typedef TYPE const& const_reference;
+    typedef size_t size_type;
+    size_type size() const { return R*C; }
+    enum { ROWS = R, COLS = C };
+
+
+    // -----------------------------------------------------------------------
+    // default constructors
+
+    mat() { }
+    mat(const mat& rhs)  : base(rhs) { }
+    mat(const base& rhs) : base(rhs) { }
+
+    // -----------------------------------------------------------------------
+    // conversion constructors
+
+    // sets the diagonal to the value, off-diagonal to zero
+    mat(pTYPE rhs) {
+        helpers::doAssign(*this, rhs);
+    }
+
+    // -----------------------------------------------------------------------
+    // Assignment
+
+    mat& operator=(const mat& rhs) {
+        base::operator=(rhs);
+        return *this;
+    }
+
+    mat& operator=(const base& rhs) {
+        base::operator=(rhs);
+        return *this;
+    }
+
+    mat& operator=(pTYPE rhs) {
+        return helpers::doAssign(*this, rhs);
+    }
+
+    // -----------------------------------------------------------------------
+    // non-member function declaration and definition
+
+    friend inline mat PURE operator + (const mat& lhs, const mat& rhs) {
+        return helpers::doAdd(
+                static_cast<const base&>(lhs),
+                static_cast<const base&>(rhs));
+    }
+    friend inline mat PURE operator - (const mat& lhs, const mat& rhs) {
+        return helpers::doSub(
+                static_cast<const base&>(lhs),
+                static_cast<const base&>(rhs));
+    }
+
+    // matrix*matrix
+    template <size_t D>
+    friend mat PURE operator * (
+            const mat<TYPE, D, R>& lhs,
+            const mat<TYPE, C, D>& rhs) {
+        return helpers::doMul(lhs, rhs);
+    }
+
+    // matrix*vector
+    friend vec<TYPE, R> PURE operator * (
+            const mat& lhs, const vec<TYPE, C>& rhs) {
+        return helpers::doMul(lhs, rhs);
+    }
+
+    // vector*matrix
+    friend mat PURE operator * (
+            const vec<TYPE, R>& lhs, const mat<TYPE, C, 1>& rhs) {
+        return helpers::doMul(lhs, rhs);
+    }
+
+    // matrix*scalar
+    friend inline mat PURE operator * (const mat& lhs, pTYPE v) {
+        return helpers::doMul(lhs, v);
+    }
+
+    // scalar*matrix
+    friend inline mat PURE operator * (pTYPE v, const mat& rhs) {
+        return helpers::doMul(v, rhs);
+    }
+
+    // -----------------------------------------------------------------------
+    // streaming operator to set the columns of the matrix:
+    // example:
+    //    mat33_t m;
+    //    m << v0 << v1 << v2;
+
+    // column_builder<> stores the matrix and knows which column to set
+    template<size_t PREV_COLUMN>
+    struct column_builder {
+        mat& matrix;
+        column_builder(mat& matrix) : matrix(matrix) { }
+    };
+
+    // operator << is not a method of column_builder<> so we can
+    // overload it for unauthorized values (partial specialization
+    // not allowed in class-scope).
+    // we just set the column and return the next column_builder<>
+    template<size_t PREV_COLUMN>
+    friend column_builder<PREV_COLUMN+1> operator << (
+            const column_builder<PREV_COLUMN>& lhs,
+            const vec<TYPE, R>& rhs) {
+        lhs.matrix[PREV_COLUMN+1] = rhs;
+        return column_builder<PREV_COLUMN+1>(lhs.matrix);
+    }
+
+    // we return void here so we get a compile-time error if the
+    // user tries to set too many columns
+    friend void operator << (
+            const column_builder<C-2>& lhs,
+            const vec<TYPE, R>& rhs) {
+        lhs.matrix[C-1] = rhs;
+    }
+
+    // this is where the process starts. we set the first columns and
+    // return the next column_builder<>
+    column_builder<0> operator << (const vec<TYPE, R>& rhs) {
+        (*this)[0] = rhs;
+        return column_builder<0>(*this);
+    }
+};
+
+// Specialize column matrix so they're exactly equivalent to a vector
+template <typename TYPE, size_t R>
+class mat<TYPE, 1, R> : public vec<TYPE, R> {
+    typedef vec<TYPE, R> base;
+public:
+    // STL-like interface.
+    typedef TYPE value_type;
+    typedef TYPE& reference;
+    typedef TYPE const& const_reference;
+    typedef size_t size_type;
+    size_type size() const { return R; }
+    enum { ROWS = R, COLS = 1 };
+
+    mat() { }
+    mat(const base& rhs) : base(rhs) { }
+    mat(const mat& rhs) : base(rhs) { }
+    mat(const TYPE& rhs) { helpers::doAssign(*this, rhs); }
+    mat& operator=(const mat& rhs) { base::operator=(rhs); return *this; }
+    mat& operator=(const base& rhs) { base::operator=(rhs); return *this; }
+    mat& operator=(const TYPE& rhs) { return helpers::doAssign(*this, rhs); }
+    // we only have one column, so ignore the index
+    const base& operator[](size_t) const { return *this; }
+    base& operator[](size_t) { return *this; }
+    void operator << (const vec<TYPE, R>& rhs) { base::operator[](0) = rhs; }
+};
+
+// -----------------------------------------------------------------------
+// matrix functions
+
+// transpose. this handles matrices of matrices
+inline int     PURE transpose(int v)    { return v; }
+inline float   PURE transpose(float v)  { return v; }
+inline double  PURE transpose(double v) { return v; }
+
+// Transpose a matrix
+template <typename TYPE, size_t C, size_t R>
+mat<TYPE, R, C> PURE transpose(const mat<TYPE, C, R>& m) {
+    mat<TYPE, R, C> r;
+    for (size_t i=0 ; i<R ; i++)
+        for (size_t j=0 ; j<C ; j++)
+            r[i][j] = transpose(m[j][i]);
+    return r;
+}
+
+// Calculate the trace of a matrix
+template <typename TYPE, size_t C> static TYPE trace(const mat<TYPE, C, C>& m) {
+    TYPE t;
+    for (size_t i=0 ; i<C ; i++)
+        t += m[i][i];
+    return t;
+}
+
+// Test positive-semidefiniteness of a matrix
+template <typename TYPE, size_t C>
+static bool isPositiveSemidefinite(const mat<TYPE, C, C>& m, TYPE tolerance) {
+    for (size_t i=0 ; i<C ; i++)
+        if (m[i][i] < 0)
+            return false;
+
+    for (size_t i=0 ; i<C ; i++)
+      for (size_t j=i+1 ; j<C ; j++)
+          if (fabs(m[i][j] - m[j][i]) > tolerance)
+              return false;
+
+    return true;
+}
+
+// Transpose a vector
+template <
+    template<typename T, size_t S> class VEC,
+    typename TYPE,
+    size_t SIZE
+>
+mat<TYPE, SIZE, 1> PURE transpose(const VEC<TYPE, SIZE>& v) {
+    mat<TYPE, SIZE, 1> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i][0] = transpose(v[i]);
+    return r;
+}
+
+// -----------------------------------------------------------------------
+// "dumb" matrix inversion
+template<typename T, size_t N>
+mat<T, N, N> PURE invert(const mat<T, N, N>& src) {
+    T t;
+    size_t swap;
+    mat<T, N, N> tmp(src);
+    mat<T, N, N> inverse(1);
+
+    for (size_t i=0 ; i<N ; i++) {
+        // look for largest element in column
+        swap = i;
+        for (size_t j=i+1 ; j<N ; j++) {
+            if (fabs(tmp[j][i]) > fabs(tmp[i][i])) {
+                swap = j;
+            }
+        }
+
+        if (swap != i) {
+            /* swap rows. */
+            for (size_t k=0 ; k<N ; k++) {
+                t = tmp[i][k];
+                tmp[i][k] = tmp[swap][k];
+                tmp[swap][k] = t;
+
+                t = inverse[i][k];
+                inverse[i][k] = inverse[swap][k];
+                inverse[swap][k] = t;
+            }
+        }
+
+        t = 1 / tmp[i][i];
+        for (size_t k=0 ; k<N ; k++) {
+            tmp[i][k] *= t;
+            inverse[i][k] *= t;
+        }
+        for (size_t j=0 ; j<N ; j++) {
+            if (j != i) {
+                t = tmp[j][i];
+                for (size_t k=0 ; k<N ; k++) {
+                    tmp[j][k] -= tmp[i][k] * t;
+                    inverse[j][k] -= inverse[i][k] * t;
+                }
+            }
+        }
+    }
+    return inverse;
+}
+
+// -----------------------------------------------------------------------
+
+typedef mat<float, 2, 2> mat22_t;
+typedef mat<float, 3, 3> mat33_t;
+typedef mat<float, 4, 4> mat44_t;
+
+// -----------------------------------------------------------------------
+
+}; // namespace android
+
+#endif /* ANDROID_MAT_H */
diff --git a/services/sensorservice/quat.h b/services/sensorservice/quat.h
new file mode 100644
index 0000000..fea1afe
--- /dev/null
+++ b/services/sensorservice/quat.h
@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2011 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_QUAT_H
+#define ANDROID_QUAT_H
+
+#include <math.h>
+
+#include "vec.h"
+#include "mat.h"
+
+// -----------------------------------------------------------------------
+namespace android {
+// -----------------------------------------------------------------------
+
+template <typename TYPE>
+mat<TYPE, 3, 3> quatToMatrix(const vec<TYPE, 4>& q) {
+    mat<TYPE, 3, 3> R;
+    TYPE q0(q.w);
+    TYPE q1(q.x);
+    TYPE q2(q.y);
+    TYPE q3(q.z);
+    TYPE sq_q1 = 2 * q1 * q1;
+    TYPE sq_q2 = 2 * q2 * q2;
+    TYPE sq_q3 = 2 * q3 * q3;
+    TYPE q1_q2 = 2 * q1 * q2;
+    TYPE q3_q0 = 2 * q3 * q0;
+    TYPE q1_q3 = 2 * q1 * q3;
+    TYPE q2_q0 = 2 * q2 * q0;
+    TYPE q2_q3 = 2 * q2 * q3;
+    TYPE q1_q0 = 2 * q1 * q0;
+    R[0][0] = 1 - sq_q2 - sq_q3;
+    R[0][1] = q1_q2 - q3_q0;
+    R[0][2] = q1_q3 + q2_q0;
+    R[1][0] = q1_q2 + q3_q0;
+    R[1][1] = 1 - sq_q1 - sq_q3;
+    R[1][2] = q2_q3 - q1_q0;
+    R[2][0] = q1_q3 - q2_q0;
+    R[2][1] = q2_q3 + q1_q0;
+    R[2][2] = 1 - sq_q1 - sq_q2;
+    return R;
+}
+
+template <typename TYPE>
+vec<TYPE, 4> matrixToQuat(const mat<TYPE, 3, 3>& R) {
+    // matrix to quaternion
+
+    struct {
+        inline TYPE operator()(TYPE v) {
+            return v < 0 ? 0 : v;
+        }
+    } clamp;
+
+    vec<TYPE, 4> q;
+    const float Hx = R[0].x;
+    const float My = R[1].y;
+    const float Az = R[2].z;
+    q.x = sqrtf( clamp( Hx - My - Az + 1) * 0.25f );
+    q.y = sqrtf( clamp(-Hx + My - Az + 1) * 0.25f );
+    q.z = sqrtf( clamp(-Hx - My + Az + 1) * 0.25f );
+    q.w = sqrtf( clamp( Hx + My + Az + 1) * 0.25f );
+    q.x = copysignf(q.x, R[2].y - R[1].z);
+    q.y = copysignf(q.y, R[0].z - R[2].x);
+    q.z = copysignf(q.z, R[1].x - R[0].y);
+    // guaranteed to be unit-quaternion
+    return q;
+}
+
+template <typename TYPE>
+vec<TYPE, 4> normalize_quat(const vec<TYPE, 4>& q) {
+    vec<TYPE, 4> r(q);
+    if (r.w < 0) {
+        r = -r;
+    }
+    return normalize(r);
+}
+
+// -----------------------------------------------------------------------
+
+typedef vec4_t quat_t;
+
+// -----------------------------------------------------------------------
+}; // namespace android
+
+#endif /* ANDROID_QUAT_H */
diff --git a/services/sensorservice/tests/Android.mk b/services/sensorservice/tests/Android.mk
new file mode 100644
index 0000000..45296dd
--- /dev/null
+++ b/services/sensorservice/tests/Android.mk
@@ -0,0 +1,14 @@
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES:= \
+	sensorservicetest.cpp
+
+LOCAL_SHARED_LIBRARIES := \
+	libcutils libutils libui libgui
+
+LOCAL_MODULE:= test-sensorservice
+
+LOCAL_MODULE_TAGS := optional
+
+include $(BUILD_EXECUTABLE)
diff --git a/services/sensorservice/tests/sensorservicetest.cpp b/services/sensorservice/tests/sensorservicetest.cpp
new file mode 100644
index 0000000..1025fa8
--- /dev/null
+++ b/services/sensorservice/tests/sensorservicetest.cpp
@@ -0,0 +1,110 @@
+/*
+ * Copyright (C) 2010 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 <android/sensor.h>
+#include <gui/Sensor.h>
+#include <gui/SensorManager.h>
+#include <gui/SensorEventQueue.h>
+#include <utils/Looper.h>
+
+using namespace android;
+
+static nsecs_t sStartTime = 0;
+
+
+int receiver(int fd, int events, void* data)
+{
+    sp<SensorEventQueue> q((SensorEventQueue*)data);
+    ssize_t n;
+    ASensorEvent buffer[8];
+
+    static nsecs_t oldTimeStamp = 0;
+
+    while ((n = q->read(buffer, 8)) > 0) {
+        for (int i=0 ; i<n ; i++) {
+            float t;
+            if (oldTimeStamp) {
+                t = float(buffer[i].timestamp - oldTimeStamp) / s2ns(1);
+            } else {
+                t = float(buffer[i].timestamp - sStartTime) / s2ns(1);
+            }
+            oldTimeStamp = buffer[i].timestamp;
+
+            if (buffer[i].type == Sensor::TYPE_ACCELEROMETER) {
+                printf("%lld\t%8f\t%8f\t%8f\t%f\n",
+                        buffer[i].timestamp,
+                        buffer[i].data[0], buffer[i].data[1], buffer[i].data[2],
+                        1.0/t);
+            }
+
+        }
+    }
+    if (n<0 && n != -EAGAIN) {
+        printf("error reading events (%s)\n", strerror(-n));
+    }
+    return 1;
+}
+
+
+int main(int argc, char** argv)
+{
+    SensorManager& mgr(SensorManager::getInstance());
+
+    Sensor const* const* list;
+    ssize_t count = mgr.getSensorList(&list);
+    printf("numSensors=%d\n", int(count));
+
+    sp<SensorEventQueue> q = mgr.createEventQueue();
+    printf("queue=%p\n", q.get());
+
+    Sensor const* accelerometer = mgr.getDefaultSensor(Sensor::TYPE_ACCELEROMETER);
+    printf("accelerometer=%p (%s)\n",
+            accelerometer, accelerometer->getName().string());
+
+    sStartTime = systemTime();
+
+    q->enableSensor(accelerometer);
+
+    q->setEventRate(accelerometer, ms2ns(10));
+
+    sp<Looper> loop = new Looper(false);
+    loop->addFd(q->getFd(), 0, ALOOPER_EVENT_INPUT, receiver, q.get());
+
+    do {
+        //printf("about to poll...\n");
+        int32_t ret = loop->pollOnce(-1);
+        switch (ret) {
+            case ALOOPER_POLL_WAKE:
+                //("ALOOPER_POLL_WAKE\n");
+                break;
+            case ALOOPER_POLL_CALLBACK:
+                //("ALOOPER_POLL_CALLBACK\n");
+                break;
+            case ALOOPER_POLL_TIMEOUT:
+                printf("ALOOPER_POLL_TIMEOUT\n");
+                break;
+            case ALOOPER_POLL_ERROR:
+                printf("ALOOPER_POLL_TIMEOUT\n");
+                break;
+            default:
+                printf("ugh? poll returned %d\n", ret);
+                break;
+        }
+    } while (1);
+
+
+    return 0;
+}
diff --git a/services/sensorservice/traits.h b/services/sensorservice/traits.h
new file mode 100644
index 0000000..da4c599
--- /dev/null
+++ b/services/sensorservice/traits.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2011 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_TRAITS_H
+#define ANDROID_TRAITS_H
+
+// -----------------------------------------------------------------------
+// Typelists
+
+namespace android {
+
+// end-of-list marker
+class NullType {};
+
+// type-list node
+template <typename T, typename U>
+struct TypeList {
+    typedef T Head;
+    typedef U Tail;
+};
+
+// helpers to build typelists
+#define TYPELIST_1(T1) TypeList<T1, NullType>
+#define TYPELIST_2(T1, T2) TypeList<T1, TYPELIST_1(T2)>
+#define TYPELIST_3(T1, T2, T3) TypeList<T1, TYPELIST_2(T2, T3)>
+#define TYPELIST_4(T1, T2, T3, T4) TypeList<T1, TYPELIST_3(T2, T3, T4)>
+
+// typelists algorithms
+namespace TL {
+template <typename TList, typename T> struct IndexOf;
+
+template <typename T>
+struct IndexOf<NullType, T> {
+    enum { value = -1 };
+};
+
+template <typename T, typename Tail>
+struct IndexOf<TypeList<T, Tail>, T> {
+    enum { value = 0 };
+};
+
+template <typename Head, typename Tail, typename T>
+struct IndexOf<TypeList<Head, Tail>, T> {
+private:
+    enum { temp = IndexOf<Tail, T>::value };
+public:
+    enum { value = temp == -1 ? -1 : 1 + temp };
+};
+
+}; // namespace TL
+
+// type selection based on a boolean
+template <bool flag, typename T, typename U>
+struct Select {
+    typedef T Result;
+};
+template <typename T, typename U>
+struct Select<false, T, U> {
+    typedef U Result;
+};
+
+// -----------------------------------------------------------------------
+// Type traits
+
+template <typename T>
+class TypeTraits {
+    typedef TYPELIST_4(
+            unsigned char, unsigned short,
+            unsigned int, unsigned long int) UnsignedInts;
+
+    typedef TYPELIST_4(
+            signed char, signed short,
+            signed int, signed long int) SignedInts;
+
+    typedef TYPELIST_1(
+            bool) OtherInts;
+
+    typedef TYPELIST_3(
+            float, double, long double) Floats;
+
+    template<typename U> struct PointerTraits {
+        enum { result = false };
+        typedef NullType PointeeType;
+    };
+    template<typename U> struct PointerTraits<U*> {
+        enum { result = true };
+        typedef U PointeeType;
+    };
+
+public:
+    enum { isStdUnsignedInt = TL::IndexOf<UnsignedInts, T>::value >= 0 };
+    enum { isStdSignedInt   = TL::IndexOf<SignedInts,   T>::value >= 0 };
+    enum { isStdIntegral    = TL::IndexOf<OtherInts,    T>::value >= 0 || isStdUnsignedInt || isStdSignedInt };
+    enum { isStdFloat       = TL::IndexOf<Floats,       T>::value >= 0 };
+    enum { isPointer        = PointerTraits<T>::result };
+    enum { isStdArith       = isStdIntegral || isStdFloat };
+
+    // best parameter type for given type
+    typedef typename Select<isStdArith || isPointer, T, const T&>::Result ParameterType;
+};
+
+// -----------------------------------------------------------------------
+}; // namespace android
+
+#endif /* ANDROID_TRAITS_H */
diff --git a/services/sensorservice/vec.h b/services/sensorservice/vec.h
new file mode 100644
index 0000000..24f30ff
--- /dev/null
+++ b/services/sensorservice/vec.h
@@ -0,0 +1,438 @@
+/*
+ * Copyright (C) 2011 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_VEC_H
+#define ANDROID_VEC_H
+
+#include <math.h>
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include "traits.h"
+
+// -----------------------------------------------------------------------
+
+#define PURE __attribute__((pure))
+
+namespace android {
+
+// -----------------------------------------------------------------------
+// non-inline helpers
+
+template <typename TYPE, size_t SIZE>
+class vec;
+
+template <typename TYPE, size_t SIZE>
+class vbase;
+
+namespace helpers {
+
+template <typename T> inline T min(T a, T b) { return a<b ? a : b; }
+template <typename T> inline T max(T a, T b) { return a>b ? a : b; }
+
+template < template<typename T, size_t S> class VEC,
+    typename TYPE, size_t SIZE, size_t S>
+vec<TYPE, SIZE>& doAssign(
+        vec<TYPE, SIZE>& lhs, const VEC<TYPE, S>& rhs) {
+    const size_t minSize = min(SIZE, S);
+    const size_t maxSize = max(SIZE, S);
+    for (size_t i=0 ; i<minSize ; i++)
+        lhs[i] = rhs[i];
+    for (size_t i=minSize ; i<maxSize ; i++)
+        lhs[i] = 0;
+    return lhs;
+}
+
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE,
+    size_t SIZE
+>
+VLHS<TYPE, SIZE> PURE doAdd(
+        const VLHS<TYPE, SIZE>& lhs,
+        const VRHS<TYPE, SIZE>& rhs) {
+    VLHS<TYPE, SIZE> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i] = lhs[i] + rhs[i];
+    return r;
+}
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE,
+    size_t SIZE
+>
+VLHS<TYPE, SIZE> PURE doSub(
+        const VLHS<TYPE, SIZE>& lhs,
+        const VRHS<TYPE, SIZE>& rhs) {
+    VLHS<TYPE, SIZE> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i] = lhs[i] - rhs[i];
+    return r;
+}
+
+template <
+    template<typename T, size_t S> class VEC,
+    typename TYPE,
+    size_t SIZE
+>
+VEC<TYPE, SIZE> PURE doMulScalar(
+        const VEC<TYPE, SIZE>& lhs,
+        typename TypeTraits<TYPE>::ParameterType rhs) {
+    VEC<TYPE, SIZE> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i] = lhs[i] * rhs;
+    return r;
+}
+
+template <
+    template<typename T, size_t S> class VEC,
+    typename TYPE,
+    size_t SIZE
+>
+VEC<TYPE, SIZE> PURE doScalarMul(
+        typename TypeTraits<TYPE>::ParameterType lhs,
+        const VEC<TYPE, SIZE>& rhs) {
+    VEC<TYPE, SIZE> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i] = lhs * rhs[i];
+    return r;
+}
+
+}; // namespace helpers
+
+// -----------------------------------------------------------------------
+// Below we define the mathematical operators for vectors.
+// We use template template arguments so we can generically
+// handle the case where the right-hand-size and left-hand-side are
+// different vector types (but with same value_type and size).
+// This is needed for performance when using ".xy{z}" element access
+// on vec<>. Without this, an extra conversion to vec<> would be needed.
+//
+// example:
+//      vec4_t a;
+//      vec3_t b;
+//      vec3_t c = a.xyz + b;
+//
+//  "a.xyz + b" is a mixed-operation between a vbase<> and a vec<>, requiring
+//  a conversion of vbase<> to vec<>. The template gunk below avoids this,
+// by allowing the addition on these different vector types directly
+//
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE,
+    size_t SIZE
+>
+inline VLHS<TYPE, SIZE> PURE operator + (
+        const VLHS<TYPE, SIZE>& lhs,
+        const VRHS<TYPE, SIZE>& rhs) {
+    return helpers::doAdd(lhs, rhs);
+}
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE,
+    size_t SIZE
+>
+inline VLHS<TYPE, SIZE> PURE operator - (
+        const VLHS<TYPE, SIZE>& lhs,
+        const VRHS<TYPE, SIZE>& rhs) {
+    return helpers::doSub(lhs, rhs);
+}
+
+template <
+    template<typename T, size_t S> class VEC,
+    typename TYPE,
+    size_t SIZE
+>
+inline VEC<TYPE, SIZE> PURE operator * (
+        const VEC<TYPE, SIZE>& lhs,
+        typename TypeTraits<TYPE>::ParameterType rhs) {
+    return helpers::doMulScalar(lhs, rhs);
+}
+
+template <
+    template<typename T, size_t S> class VEC,
+    typename TYPE,
+    size_t SIZE
+>
+inline VEC<TYPE, SIZE> PURE operator * (
+        typename TypeTraits<TYPE>::ParameterType lhs,
+        const VEC<TYPE, SIZE>& rhs) {
+    return helpers::doScalarMul(lhs, rhs);
+}
+
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE,
+    size_t SIZE
+>
+TYPE PURE dot_product(
+        const VLHS<TYPE, SIZE>& lhs,
+        const VRHS<TYPE, SIZE>& rhs) {
+    TYPE r(0);
+    for (size_t i=0 ; i<SIZE ; i++)
+        r += lhs[i] * rhs[i];
+    return r;
+}
+
+template <
+    template<typename T, size_t S> class V,
+    typename TYPE,
+    size_t SIZE
+>
+TYPE PURE length(const V<TYPE, SIZE>& v) {
+    return sqrt(dot_product(v, v));
+}
+
+template <
+    template<typename T, size_t S> class V,
+    typename TYPE,
+    size_t SIZE
+>
+TYPE PURE length_squared(const V<TYPE, SIZE>& v) {
+    return dot_product(v, v);
+}
+
+template <
+    template<typename T, size_t S> class V,
+    typename TYPE,
+    size_t SIZE
+>
+V<TYPE, SIZE> PURE normalize(const V<TYPE, SIZE>& v) {
+    return v * (1/length(v));
+}
+
+template <
+    template<typename T, size_t S> class VLHS,
+    template<typename T, size_t S> class VRHS,
+    typename TYPE
+>
+VLHS<TYPE, 3> PURE cross_product(
+        const VLHS<TYPE, 3>& u,
+        const VRHS<TYPE, 3>& v) {
+    VLHS<TYPE, 3> r;
+    r.x = u.y*v.z - u.z*v.y;
+    r.y = u.z*v.x - u.x*v.z;
+    r.z = u.x*v.y - u.y*v.x;
+    return r;
+}
+
+
+template <typename TYPE, size_t SIZE>
+vec<TYPE, SIZE> PURE operator - (const vec<TYPE, SIZE>& lhs) {
+    vec<TYPE, SIZE> r;
+    for (size_t i=0 ; i<SIZE ; i++)
+        r[i] = -lhs[i];
+    return r;
+}
+
+// -----------------------------------------------------------------------
+
+// This our basic vector type, it just implements the data storage
+// and accessors.
+
+template <typename TYPE, size_t SIZE>
+struct vbase {
+    TYPE v[SIZE];
+    inline const TYPE& operator[](size_t i) const { return v[i]; }
+    inline       TYPE& operator[](size_t i)       { return v[i]; }
+};
+template<> struct vbase<float, 2> {
+    union {
+        float v[2];
+        struct { float x, y; };
+        struct { float s, t; };
+    };
+    inline const float& operator[](size_t i) const { return v[i]; }
+    inline       float& operator[](size_t i)       { return v[i]; }
+};
+template<> struct vbase<float, 3> {
+    union {
+        float v[3];
+        struct { float x, y, z; };
+        struct { float s, t, r; };
+        vbase<float, 2> xy;
+        vbase<float, 2> st;
+    };
+    inline const float& operator[](size_t i) const { return v[i]; }
+    inline       float& operator[](size_t i)       { return v[i]; }
+};
+template<> struct vbase<float, 4> {
+    union {
+        float v[4];
+        struct { float x, y, z, w; };
+        struct { float s, t, r, q; };
+        vbase<float, 3> xyz;
+        vbase<float, 3> str;
+        vbase<float, 2> xy;
+        vbase<float, 2> st;
+    };
+    inline const float& operator[](size_t i) const { return v[i]; }
+    inline       float& operator[](size_t i)       { return v[i]; }
+};
+
+// -----------------------------------------------------------------------
+
+template <typename TYPE, size_t SIZE>
+class vec : public vbase<TYPE, SIZE>
+{
+    typedef typename TypeTraits<TYPE>::ParameterType pTYPE;
+    typedef vbase<TYPE, SIZE> base;
+
+public:
+    // STL-like interface.
+    typedef TYPE value_type;
+    typedef TYPE& reference;
+    typedef TYPE const& const_reference;
+    typedef size_t size_type;
+
+    typedef TYPE* iterator;
+    typedef TYPE const* const_iterator;
+    iterator begin() { return base::v; }
+    iterator end() { return base::v + SIZE; }
+    const_iterator begin() const { return base::v; }
+    const_iterator end() const { return base::v + SIZE; }
+    size_type size() const { return SIZE; }
+
+    // -----------------------------------------------------------------------
+    // default constructors
+
+    vec() { }
+    vec(const vec& rhs)  : base(rhs) { }
+    vec(const base& rhs) : base(rhs) { }
+
+    // -----------------------------------------------------------------------
+    // conversion constructors
+
+    vec(pTYPE rhs) {
+        for (size_t i=0 ; i<SIZE ; i++)
+            base::operator[](i) = rhs;
+    }
+
+    template < template<typename T, size_t S> class VEC, size_t S>
+    explicit vec(const VEC<TYPE, S>& rhs) {
+        helpers::doAssign(*this, rhs);
+    }
+
+    explicit vec(TYPE const* array) {
+        for (size_t i=0 ; i<SIZE ; i++)
+            base::operator[](i) = array[i];
+    }
+
+    // -----------------------------------------------------------------------
+    // Assignment
+
+    vec& operator = (const vec& rhs) {
+        base::operator=(rhs);
+        return *this;
+    }
+
+    vec& operator = (const base& rhs) {
+        base::operator=(rhs);
+        return *this;
+    }
+
+    vec& operator = (pTYPE rhs) {
+        for (size_t i=0 ; i<SIZE ; i++)
+            base::operator[](i) = rhs;
+        return *this;
+    }
+
+    template < template<typename T, size_t S> class VEC, size_t S>
+    vec& operator = (const VEC<TYPE, S>& rhs) {
+        return helpers::doAssign(*this, rhs);
+    }
+
+    // -----------------------------------------------------------------------
+    // operation-assignment
+
+    vec& operator += (const vec& rhs);
+    vec& operator -= (const vec& rhs);
+    vec& operator *= (pTYPE rhs);
+
+    // -----------------------------------------------------------------------
+    // non-member function declaration and definition
+    // NOTE: we declare the non-member function as friend inside the class
+    // so that they are known to the compiler when the class is instantiated.
+    // This helps the compiler doing template argument deduction when the
+    // passed types are not identical. Essentially this helps with
+    // type conversion so that you can multiply a vec<float> by an scalar int
+    // (for instance).
+
+    friend inline vec PURE operator + (const vec& lhs, const vec& rhs) {
+        return helpers::doAdd(lhs, rhs);
+    }
+    friend inline vec PURE operator - (const vec& lhs, const vec& rhs) {
+        return helpers::doSub(lhs, rhs);
+    }
+    friend inline vec PURE operator * (const vec& lhs, pTYPE v) {
+        return helpers::doMulScalar(lhs, v);
+    }
+    friend inline vec PURE operator * (pTYPE v, const vec& rhs) {
+        return helpers::doScalarMul(v, rhs);
+    }
+    friend inline TYPE PURE dot_product(const vec& lhs, const vec& rhs) {
+        return android::dot_product(lhs, rhs);
+    }
+};
+
+// -----------------------------------------------------------------------
+
+template <typename TYPE, size_t SIZE>
+vec<TYPE, SIZE>& vec<TYPE, SIZE>::operator += (const vec<TYPE, SIZE>& rhs) {
+    vec<TYPE, SIZE>& lhs(*this);
+    for (size_t i=0 ; i<SIZE ; i++)
+        lhs[i] += rhs[i];
+    return lhs;
+}
+
+template <typename TYPE, size_t SIZE>
+vec<TYPE, SIZE>& vec<TYPE, SIZE>::operator -= (const vec<TYPE, SIZE>& rhs) {
+    vec<TYPE, SIZE>& lhs(*this);
+    for (size_t i=0 ; i<SIZE ; i++)
+        lhs[i] -= rhs[i];
+    return lhs;
+}
+
+template <typename TYPE, size_t SIZE>
+vec<TYPE, SIZE>& vec<TYPE, SIZE>::operator *= (vec<TYPE, SIZE>::pTYPE rhs) {
+    vec<TYPE, SIZE>& lhs(*this);
+    for (size_t i=0 ; i<SIZE ; i++)
+        lhs[i] *= rhs;
+    return lhs;
+}
+
+// -----------------------------------------------------------------------
+
+typedef vec<float, 2> vec2_t;
+typedef vec<float, 3> vec3_t;
+typedef vec<float, 4> vec4_t;
+
+// -----------------------------------------------------------------------
+
+}; // namespace android
+
+#endif /* ANDROID_VEC_H */
diff --git a/services/surfaceflinger/Android.mk b/services/surfaceflinger/Android.mk
index 6f7a7e1..dd0dc16 100644
--- a/services/surfaceflinger/Android.mk
+++ b/services/surfaceflinger/Android.mk
@@ -2,13 +2,15 @@
 include $(CLEAR_VARS)
 
 LOCAL_SRC_FILES:= \
+    Client.cpp                              \
+    DdmConnection.cpp                       \
+    DisplayDevice.cpp                       \
     EventThread.cpp                         \
     Layer.cpp                               \
     LayerBase.cpp                           \
     LayerDim.cpp                            \
     LayerScreenshot.cpp                     \
-    DisplayHardware/DisplayHardware.cpp     \
-    DisplayHardware/DisplayHardwareBase.cpp \
+    DisplayHardware/FramebufferSurface.cpp  \
     DisplayHardware/HWComposer.cpp          \
     DisplayHardware/PowerHAL.cpp            \
     GLExtensions.cpp                        \
@@ -21,23 +23,24 @@
 LOCAL_CFLAGS:= -DLOG_TAG=\"SurfaceFlinger\"
 LOCAL_CFLAGS += -DGL_GLEXT_PROTOTYPES -DEGL_EGLEXT_PROTOTYPES
 
-ifeq ($(TARGET_BOARD_PLATFORM), omap3)
+ifeq ($(TARGET_BOARD_PLATFORM),omap3)
 	LOCAL_CFLAGS += -DNO_RGBX_8888
 endif
-ifeq ($(TARGET_BOARD_PLATFORM), omap4)
+ifeq ($(TARGET_BOARD_PLATFORM),omap4)
 	LOCAL_CFLAGS += -DHAS_CONTEXT_PRIORITY
 endif
-ifeq ($(TARGET_BOARD_PLATFORM), s5pc110)
+ifeq ($(TARGET_BOARD_PLATFORM),s5pc110)
 	LOCAL_CFLAGS += -DHAS_CONTEXT_PRIORITY
 	LOCAL_CFLAGS += -DNEVER_DEFAULT_TO_ASYNC_MODE
 endif
 
-ifeq ($(TARGET_DISABLE_TRIPLE_BUFFERING), true)
+ifeq ($(TARGET_DISABLE_TRIPLE_BUFFERING),true)
 	LOCAL_CFLAGS += -DTARGET_DISABLE_TRIPLE_BUFFERING
 endif
 
 LOCAL_SHARED_LIBRARIES := \
 	libcutils \
+	libdl \
 	libhardware \
 	libutils \
 	libEGL \
@@ -46,13 +49,6 @@
 	libui \
 	libgui
 
-# this is only needed for DDMS debugging
-ifneq ($(TARGET_BUILD_PDK), true)
-	LOCAL_SHARED_LIBRARIES += libdvm libandroid_runtime
-	LOCAL_CLFAGS += -DDDMS_DEBUGGING
-	LOCAL_SRC_FILES += DdmConnection.cpp
-endif
-
 LOCAL_MODULE:= libsurfaceflinger
 
 include $(BUILD_SHARED_LIBRARY)
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
new file mode 100644
index 0000000..b0f2330
--- /dev/null
+++ b/services/surfaceflinger/Client.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2012 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 <stdint.h>
+#include <sys/types.h>
+
+#include <binder/PermissionCache.h>
+
+#include <private/android_filesystem_config.h>
+
+#include "Client.h"
+#include "Layer.h"
+#include "LayerBase.h"
+#include "SurfaceFlinger.h"
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+const String16 sAccessSurfaceFlinger("android.permission.ACCESS_SURFACE_FLINGER");
+
+// ---------------------------------------------------------------------------
+
+Client::Client(const sp<SurfaceFlinger>& flinger)
+    : mFlinger(flinger), mNameGenerator(1)
+{
+}
+
+Client::~Client()
+{
+    const size_t count = mLayers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
+        if (layer != 0) {
+            mFlinger->removeLayer(layer);
+        }
+    }
+}
+
+status_t Client::initCheck() const {
+    return NO_ERROR;
+}
+
+size_t Client::attachLayer(const sp<LayerBaseClient>& layer)
+{
+    Mutex::Autolock _l(mLock);
+    size_t name = mNameGenerator++;
+    mLayers.add(name, layer);
+    return name;
+}
+
+void Client::detachLayer(const LayerBaseClient* layer)
+{
+    Mutex::Autolock _l(mLock);
+    // we do a linear search here, because this doesn't happen often
+    const size_t count = mLayers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        if (mLayers.valueAt(i) == layer) {
+            mLayers.removeItemsAt(i, 1);
+            break;
+        }
+    }
+}
+sp<LayerBaseClient> Client::getLayerUser(int32_t i) const
+{
+    Mutex::Autolock _l(mLock);
+    sp<LayerBaseClient> lbc;
+    wp<LayerBaseClient> layer(mLayers.valueFor(i));
+    if (layer != 0) {
+        lbc = layer.promote();
+        ALOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
+    }
+    return lbc;
+}
+
+
+status_t Client::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    // these must be checked
+     IPCThreadState* ipc = IPCThreadState::self();
+     const int pid = ipc->getCallingPid();
+     const int uid = ipc->getCallingUid();
+     const int self_pid = getpid();
+     if (CC_UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) {
+         // we're called from a different process, do the real check
+         if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger))
+         {
+             ALOGE("Permission Denial: "
+                     "can't openGlobalTransaction pid=%d, uid=%d", pid, uid);
+             return PERMISSION_DENIED;
+         }
+     }
+     return BnSurfaceComposerClient::onTransact(code, data, reply, flags);
+}
+
+
+sp<ISurface> Client::createSurface(
+        ISurfaceComposerClient::surface_data_t* params,
+        const String8& name,
+        uint32_t w, uint32_t h, PixelFormat format,
+        uint32_t flags)
+{
+    /*
+     * createSurface must be called from the GL thread so that it can
+     * have access to the GL context.
+     */
+
+    class MessageCreateLayer : public MessageBase {
+        sp<ISurface> result;
+        SurfaceFlinger* flinger;
+        ISurfaceComposerClient::surface_data_t* params;
+        Client* client;
+        const String8& name;
+        uint32_t w, h;
+        PixelFormat format;
+        uint32_t flags;
+    public:
+        MessageCreateLayer(SurfaceFlinger* flinger,
+                ISurfaceComposerClient::surface_data_t* params,
+                const String8& name, Client* client,
+                uint32_t w, uint32_t h, PixelFormat format,
+                uint32_t flags)
+            : flinger(flinger), params(params), client(client), name(name),
+              w(w), h(h), format(format), flags(flags)
+        {
+        }
+        sp<ISurface> getResult() const { return result; }
+        virtual bool handler() {
+            // TODO don't require display id to create a layer
+            result = flinger->createLayer(params, name, client,
+                    ISurfaceComposer::eDisplayIdMain, w, h, format, flags);
+            return true;
+        }
+    };
+
+    sp<MessageBase> msg = new MessageCreateLayer(mFlinger.get(),
+            params, name, this, w, h, format, flags);
+    mFlinger->postMessageSync(msg);
+    return static_cast<MessageCreateLayer*>( msg.get() )->getResult();
+}
+status_t Client::destroySurface(SurfaceID sid) {
+    return mFlinger->onLayerRemoved(this, sid);
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
diff --git a/services/surfaceflinger/Client.h b/services/surfaceflinger/Client.h
new file mode 100644
index 0000000..d6c6931
--- /dev/null
+++ b/services/surfaceflinger/Client.h
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2012 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_SF_CLIENT_H
+#define ANDROID_SF_CLIENT_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <utils/Errors.h>
+#include <utils/KeyedVector.h>
+#include <utils/Mutex.h>
+
+#include <gui/ISurfaceComposerClient.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+class LayerBaseClient;
+class SurfaceFlinger;
+
+// ---------------------------------------------------------------------------
+
+class Client : public BnSurfaceComposerClient
+{
+public:
+        Client(const sp<SurfaceFlinger>& flinger);
+        ~Client();
+
+    status_t initCheck() const;
+
+    // protected by SurfaceFlinger::mStateLock
+    size_t attachLayer(const sp<LayerBaseClient>& layer);
+
+    void detachLayer(const LayerBaseClient* layer);
+
+    sp<LayerBaseClient> getLayerUser(int32_t i) const;
+
+private:
+    // ISurfaceComposerClient interface
+    virtual sp<ISurface> createSurface(
+            surface_data_t* params, const String8& name,
+            uint32_t w, uint32_t h,PixelFormat format,
+            uint32_t flags);
+
+    virtual status_t destroySurface(SurfaceID surfaceId);
+
+    virtual status_t onTransact(
+        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
+
+    // constant
+    sp<SurfaceFlinger> mFlinger;
+
+    // protected by mLock
+    DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers;
+    size_t mNameGenerator;
+
+    // thread-safe
+    mutable Mutex mLock;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+
+#endif // ANDROID_SF_CLIENT_H
diff --git a/services/surfaceflinger/DdmConnection.cpp b/services/surfaceflinger/DdmConnection.cpp
index 467a915..433b38e 100644
--- a/services/surfaceflinger/DdmConnection.cpp
+++ b/services/surfaceflinger/DdmConnection.cpp
@@ -14,16 +14,16 @@
  * limitations under the License.
  */
 
-#include <android_runtime/AndroidRuntime.h>
+#include <dlfcn.h>
+
+#include <cutils/log.h>
 
 #include "jni.h"
 #include "DdmConnection.h"
 
-extern "C" jint Java_com_android_internal_util_WithFramework_registerNatives(
-        JNIEnv* env, jclass clazz);
-
 namespace android {
 
+
 void DdmConnection::start(const char* name) {
     JavaVM* vm;
     JNIEnv* env;
@@ -40,12 +40,36 @@
     args.nOptions = 1;
     args.ignoreUnrecognized = JNI_FALSE;
 
+
+    void* libdvm_dso = dlopen("libdvm.so", RTLD_NOW);
+    ALOGE_IF(!libdvm_dso, "DdmConnection: %s", dlerror());
+
+    void* libandroid_runtime_dso = dlopen("libandroid_runtime.so", RTLD_NOW);
+    ALOGE_IF(!libandroid_runtime_dso, "DdmConnection: %s", dlerror());
+
+    if (!libdvm_dso || !libandroid_runtime_dso) {
+        goto error;
+    }
+
+    jint (*JNI_CreateJavaVM)(JavaVM** p_vm, JNIEnv** p_env, void* vm_args);
+    JNI_CreateJavaVM = (typeof JNI_CreateJavaVM)dlsym(libdvm_dso, "JNI_CreateJavaVM");
+    ALOGE_IF(!JNI_CreateJavaVM, "DdmConnection: %s", dlerror());
+
+    jint (*registerNatives)(JNIEnv* env, jclass clazz);
+    registerNatives = (typeof registerNatives)dlsym(libandroid_runtime_dso,
+        "Java_com_android_internal_util_WithFramework_registerNatives");
+    ALOGE_IF(!registerNatives, "DdmConnection: %s", dlerror());
+
+    if (!JNI_CreateJavaVM || !registerNatives) {
+        goto error;
+    }
+
     if (JNI_CreateJavaVM(&vm, &env, &args) == 0) {
         jclass startClass;
         jmethodID startMeth;
 
         // register native code
-        if (Java_com_android_internal_util_WithFramework_registerNatives(env, 0) == 0) {
+        if (registerNatives(env, 0) == 0) {
             // set our name by calling DdmHandleAppName.setAppName()
             startClass = env->FindClass("android/ddm/DdmHandleAppName");
             if (startClass) {
@@ -70,6 +94,15 @@
             }
         }
     }
+    return;
+
+error:
+    if (libandroid_runtime_dso) {
+        dlclose(libandroid_runtime_dso);
+    }
+    if (libdvm_dso) {
+        dlclose(libdvm_dso);
+    }
 }
 
 }; // namespace android
diff --git a/services/surfaceflinger/DisplayDevice.cpp b/services/surfaceflinger/DisplayDevice.cpp
new file mode 100644
index 0000000..821a329
--- /dev/null
+++ b/services/surfaceflinger/DisplayDevice.cpp
@@ -0,0 +1,298 @@
+/*
+ * 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <math.h>
+
+#include <cutils/properties.h>
+
+#include <utils/RefBase.h>
+#include <utils/Log.h>
+
+#include <ui/DisplayInfo.h>
+#include <ui/PixelFormat.h>
+
+#include <gui/SurfaceTextureClient.h>
+
+#include <GLES/gl.h>
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <hardware/gralloc.h>
+
+#include "DisplayHardware/FramebufferSurface.h"
+#include "DisplayHardware/HWComposer.h"
+
+#include "DisplayDevice.h"
+#include "GLExtensions.h"
+#include "SurfaceFlinger.h"
+#include "LayerBase.h"
+
+// ----------------------------------------------------------------------------
+using namespace android;
+// ----------------------------------------------------------------------------
+
+static __attribute__((noinline))
+void checkGLErrors()
+{
+    do {
+        // there could be more than one error flag
+        GLenum error = glGetError();
+        if (error == GL_NO_ERROR)
+            break;
+        ALOGE("GL error 0x%04x", int(error));
+    } while(true);
+}
+
+// ----------------------------------------------------------------------------
+
+/*
+ * Initialize the display to the specified values.
+ *
+ */
+
+DisplayDevice::DisplayDevice(
+        const sp<SurfaceFlinger>& flinger,
+        int32_t display, int32_t hwcDisplayId,
+        const sp<ANativeWindow>& nativeWindow,
+        const sp<FramebufferSurface>& framebufferSurface,
+        EGLConfig config)
+    : mFlinger(flinger),
+      mId(display), mHwcDisplayId(hwcDisplayId),
+      mNativeWindow(nativeWindow),
+      mFramebufferSurface(framebufferSurface),
+      mDisplay(EGL_NO_DISPLAY),
+      mSurface(EGL_NO_SURFACE),
+      mContext(EGL_NO_CONTEXT),
+      mDisplayWidth(), mDisplayHeight(), mFormat(),
+      mFlags(),
+      mPageFlipCount(),
+      mSecureLayerVisible(false),
+      mScreenAcquired(false),
+      mOrientation(),
+      mLayerStack(0)
+{
+    init(config);
+}
+
+DisplayDevice::~DisplayDevice() {
+    if (mSurface != EGL_NO_SURFACE) {
+        eglDestroySurface(mDisplay, mSurface);
+        mSurface = EGL_NO_SURFACE;
+    }
+}
+
+bool DisplayDevice::isValid() const {
+    return mFlinger != NULL;
+}
+
+int DisplayDevice::getWidth() const {
+    return mDisplayWidth;
+}
+
+int DisplayDevice::getHeight() const {
+    return mDisplayHeight;
+}
+
+PixelFormat DisplayDevice::getFormat() const {
+    return mFormat;
+}
+
+EGLSurface DisplayDevice::getEGLSurface() const {
+    return mSurface;
+}
+
+void DisplayDevice::init(EGLConfig config)
+{
+    ANativeWindow* const window = mNativeWindow.get();
+
+    int format;
+    window->query(window, NATIVE_WINDOW_FORMAT, &format);
+
+    /*
+     * Create our display's surface
+     */
+
+    EGLSurface surface;
+    EGLint w, h;
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    surface = eglCreateWindowSurface(display, config, window, NULL);
+    eglQuerySurface(display, surface, EGL_WIDTH,  &mDisplayWidth);
+    eglQuerySurface(display, surface, EGL_HEIGHT, &mDisplayHeight);
+
+    mDisplay = display;
+    mSurface = surface;
+    mFormat  = format;
+    mPageFlipCount = 0;
+
+    // external displays are always considered enabled
+    mScreenAcquired = mId >= DisplayDevice::DISPLAY_ID_COUNT;
+
+    // initialize the display orientation transform.
+    DisplayDevice::setOrientation(DisplayState::eOrientationDefault);
+}
+
+uint32_t DisplayDevice::getPageFlipCount() const {
+    return mPageFlipCount;
+}
+
+status_t DisplayDevice::compositionComplete() const {
+    if (mFramebufferSurface == NULL) {
+        return NO_ERROR;
+    }
+    return mFramebufferSurface->compositionComplete();
+}
+
+void DisplayDevice::flip(const Region& dirty) const
+{
+    checkGLErrors();
+
+    EGLDisplay dpy = mDisplay;
+    EGLSurface surface = mSurface;
+
+#ifdef EGL_ANDROID_swap_rectangle    
+    if (mFlags & SWAP_RECTANGLE) {
+        const Region newDirty(dirty.intersect(bounds()));
+        const Rect b(newDirty.getBounds());
+        eglSetSwapRectangleANDROID(dpy, surface,
+                b.left, b.top, b.width(), b.height());
+    } 
+#endif
+    
+    mPageFlipCount++;
+}
+
+uint32_t DisplayDevice::getFlags() const
+{
+    return mFlags;
+}
+
+void DisplayDevice::dump(String8& res) const
+{
+    if (mFramebufferSurface != NULL) {
+        mFramebufferSurface->dump(res);
+    }
+}
+
+void DisplayDevice::makeCurrent(const sp<const DisplayDevice>& hw, EGLContext ctx) {
+    EGLSurface sur = eglGetCurrentSurface(EGL_DRAW);
+    if (sur != hw->mSurface) {
+        EGLDisplay dpy = eglGetCurrentDisplay();
+        eglMakeCurrent(dpy, hw->mSurface, hw->mSurface, ctx);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+void DisplayDevice::setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers) {
+    mVisibleLayersSortedByZ = layers;
+    mSecureLayerVisible = false;
+    size_t count = layers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        if (layers[i]->isSecure()) {
+            mSecureLayerVisible = true;
+        }
+    }
+}
+
+Vector< sp<LayerBase> > DisplayDevice::getVisibleLayersSortedByZ() const {
+    return mVisibleLayersSortedByZ;
+}
+
+bool DisplayDevice::getSecureLayerVisible() const {
+    return mSecureLayerVisible;
+}
+
+Region DisplayDevice::getDirtyRegion(bool repaintEverything) const {
+    Region dirty;
+    const Transform& planeTransform(mGlobalTransform);
+    if (repaintEverything) {
+        dirty.set(getBounds());
+    } else {
+        dirty = planeTransform.transform(this->dirtyRegion);
+        dirty.andSelf(getBounds());
+    }
+    return dirty;
+}
+
+// ----------------------------------------------------------------------------
+
+bool DisplayDevice::canDraw() const {
+    return mScreenAcquired;
+}
+
+void DisplayDevice::releaseScreen() const {
+    mScreenAcquired = false;
+}
+
+void DisplayDevice::acquireScreen() const {
+    mScreenAcquired = true;
+}
+
+bool DisplayDevice::isScreenAcquired() const {
+    return mScreenAcquired;
+}
+
+// ----------------------------------------------------------------------------
+
+void DisplayDevice::setLayerStack(uint32_t stack) {
+    mLayerStack = stack;
+    dirtyRegion.set(bounds());
+}
+
+// ----------------------------------------------------------------------------
+
+status_t DisplayDevice::orientationToTransfrom(
+        int orientation, int w, int h, Transform* tr)
+{
+    uint32_t flags = 0;
+    switch (orientation) {
+    case DisplayState::eOrientationDefault:
+        flags = Transform::ROT_0;
+        break;
+    case DisplayState::eOrientation90:
+        flags = Transform::ROT_90;
+        break;
+    case DisplayState::eOrientation180:
+        flags = Transform::ROT_180;
+        break;
+    case DisplayState::eOrientation270:
+        flags = Transform::ROT_270;
+        break;
+    default:
+        return BAD_VALUE;
+    }
+    tr->set(flags, w, h);
+    return NO_ERROR;
+}
+
+status_t DisplayDevice::setOrientation(int orientation) {
+    int w = mDisplayWidth;
+    int h = mDisplayHeight;
+
+    DisplayDevice::orientationToTransfrom(
+            orientation, w, h, &mGlobalTransform);
+    if (orientation & DisplayState::eOrientationSwapMask) {
+        int tmp = w;
+        w = h;
+        h = tmp;
+    }
+    mOrientation = orientation;
+    dirtyRegion.set(bounds());
+    return NO_ERROR;
+}
diff --git a/services/surfaceflinger/DisplayDevice.h b/services/surfaceflinger/DisplayDevice.h
new file mode 100644
index 0000000..ea56d90
--- /dev/null
+++ b/services/surfaceflinger/DisplayDevice.h
@@ -0,0 +1,182 @@
+/*
+ * 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_DISPLAY_DEVICE_H
+#define ANDROID_DISPLAY_DEVICE_H
+
+#include <stdlib.h>
+
+#include <ui/PixelFormat.h>
+#include <ui/Region.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+
+#include <utils/Mutex.h>
+#include <utils/Timers.h>
+
+#include <hardware/hwcomposer_defs.h>
+
+#include "Transform.h"
+
+struct ANativeWindow;
+
+namespace android {
+
+class DisplayInfo;
+class FramebufferSurface;
+class LayerBase;
+class SurfaceFlinger;
+
+class DisplayDevice : public LightRefBase<DisplayDevice>
+{
+public:
+    // region in layer-stack space
+    mutable Region dirtyRegion;
+    // region in screen space
+    mutable Region swapRegion;
+    // region in screen space
+    Region undefinedRegion;
+
+    enum {
+        DISPLAY_ID_MAIN = HWC_DISPLAY_PRIMARY,
+        DISPLAY_ID_HDMI = HWC_DISPLAY_EXTERNAL,
+        DISPLAY_ID_COUNT = HWC_NUM_DISPLAY_TYPES
+    };
+
+    enum {
+        PARTIAL_UPDATES = 0x00020000, // video driver feature
+        SWAP_RECTANGLE  = 0x00080000,
+    };
+
+    DisplayDevice(
+            const sp<SurfaceFlinger>& flinger,
+            int32_t dpy, int32_t hwcDisplayId,
+            const sp<ANativeWindow>& nativeWindow,
+            const sp<FramebufferSurface>& framebufferSurface,
+            EGLConfig config);
+
+    ~DisplayDevice();
+
+    // whether this is a valid object. An invalid DisplayDevice is returned
+    // when an non existing id is requested
+    bool isValid() const;
+
+    // Flip the front and back buffers if the back buffer is "dirty".  Might
+    // be instantaneous, might involve copying the frame buffer around.
+    void flip(const Region& dirty) const;
+
+    int         getWidth() const;
+    int         getHeight() const;
+    PixelFormat getFormat() const;
+    uint32_t    getFlags() const;
+
+    EGLSurface  getEGLSurface() const;
+
+    void                    setVisibleLayersSortedByZ(const Vector< sp<LayerBase> >& layers);
+    Vector< sp<LayerBase> > getVisibleLayersSortedByZ() const;
+    bool                    getSecureLayerVisible() const;
+    Region                  getDirtyRegion(bool repaintEverything) const;
+
+    status_t                setOrientation(int orientation);
+    void                    setLayerStack(uint32_t stack);
+
+    int                     getOrientation() const { return mOrientation; }
+    const Transform&        getTransform() const { return mGlobalTransform; }
+    uint32_t                getLayerStack() const { return mLayerStack; }
+    int32_t                 getDisplayId() const { return mId; }
+    int32_t                 getHwcDisplayId() const { return mHwcDisplayId; }
+
+    status_t compositionComplete() const;
+    
+    Rect getBounds() const {
+        return Rect(mDisplayWidth, mDisplayHeight);
+    }
+    inline Rect bounds() const { return getBounds(); }
+
+    static void makeCurrent(const sp<const DisplayDevice>& hw, EGLContext ctx);
+
+    /* ------------------------------------------------------------------------
+     * blank / unplank management
+     */
+    void releaseScreen() const;
+    void acquireScreen() const;
+    bool isScreenAcquired() const;
+    bool canDraw() const;
+
+    /* ------------------------------------------------------------------------
+     * Debugging
+     */
+    uint32_t getPageFlipCount() const;
+    void dump(String8& res) const;
+
+    inline bool operator < (const DisplayDevice& rhs) const {
+        return mId < rhs.mId;
+    }
+
+private:
+    void init(EGLConfig config);
+
+    /*
+     *  Constants, set during initialization
+     */
+    sp<SurfaceFlinger> mFlinger;
+    int32_t mId;
+    int32_t mHwcDisplayId;
+
+    // ANativeWindow this display is rendering into
+    sp<ANativeWindow> mNativeWindow;
+
+    // set if mNativeWindow is a FramebufferSurface
+    sp<FramebufferSurface> mFramebufferSurface;
+
+    EGLDisplay      mDisplay;
+    EGLSurface      mSurface;
+    EGLContext      mContext;
+    int             mDisplayWidth;
+    int             mDisplayHeight;
+    PixelFormat     mFormat;
+    uint32_t        mFlags;
+    mutable uint32_t mPageFlipCount;
+
+    /*
+     * Can only accessed from the main thread, these members
+     * don't need synchronization.
+     */
+
+    // list of visible layers on that display
+    Vector< sp<LayerBase> > mVisibleLayersSortedByZ;
+
+    // Whether we have a visible secure layer on this display
+    bool mSecureLayerVisible;
+
+    // Whether the screen is blanked;
+    mutable int mScreenAcquired;
+
+
+    /*
+     * Transaction state
+     */
+    static status_t orientationToTransfrom(int orientation, int w, int h,
+            Transform* tr);
+    Transform mGlobalTransform;
+    int mOrientation;
+    uint32_t mLayerStack;
+};
+
+}; // namespace android
+
+#endif // ANDROID_DISPLAY_DEVICE_H
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp b/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp
deleted file mode 100644
index bb93215..0000000
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.cpp
+++ /dev/null
@@ -1,481 +0,0 @@
-/*
- * 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 <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-#include <math.h>
-
-#include <cutils/properties.h>
-
-#include <utils/RefBase.h>
-#include <utils/Log.h>
-
-#include <ui/PixelFormat.h>
-#include <ui/FramebufferNativeWindow.h>
-
-#include <GLES/gl.h>
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include "DisplayHardware/DisplayHardware.h"
-
-#include <hardware/gralloc.h>
-
-#include "DisplayHardwareBase.h"
-#include "GLExtensions.h"
-#include "HWComposer.h"
-#include "SurfaceFlinger.h"
-
-using namespace android;
-
-
-static __attribute__((noinline))
-void checkGLErrors()
-{
-    do {
-        // there could be more than one error flag
-        GLenum error = glGetError();
-        if (error == GL_NO_ERROR)
-            break;
-        ALOGE("GL error 0x%04x", int(error));
-    } while(true);
-}
-
-static __attribute__((noinline))
-void checkEGLErrors(const char* token)
-{
-    struct EGLUtils {
-        static const char *strerror(EGLint err) {
-            switch (err){
-                case EGL_SUCCESS:           return "EGL_SUCCESS";
-                case EGL_NOT_INITIALIZED:   return "EGL_NOT_INITIALIZED";
-                case EGL_BAD_ACCESS:        return "EGL_BAD_ACCESS";
-                case EGL_BAD_ALLOC:         return "EGL_BAD_ALLOC";
-                case EGL_BAD_ATTRIBUTE:     return "EGL_BAD_ATTRIBUTE";
-                case EGL_BAD_CONFIG:        return "EGL_BAD_CONFIG";
-                case EGL_BAD_CONTEXT:       return "EGL_BAD_CONTEXT";
-                case EGL_BAD_CURRENT_SURFACE: return "EGL_BAD_CURRENT_SURFACE";
-                case EGL_BAD_DISPLAY:       return "EGL_BAD_DISPLAY";
-                case EGL_BAD_MATCH:         return "EGL_BAD_MATCH";
-                case EGL_BAD_NATIVE_PIXMAP: return "EGL_BAD_NATIVE_PIXMAP";
-                case EGL_BAD_NATIVE_WINDOW: return "EGL_BAD_NATIVE_WINDOW";
-                case EGL_BAD_PARAMETER:     return "EGL_BAD_PARAMETER";
-                case EGL_BAD_SURFACE:       return "EGL_BAD_SURFACE";
-                case EGL_CONTEXT_LOST:      return "EGL_CONTEXT_LOST";
-                default: return "UNKNOWN";
-            }
-        }
-    };
-
-    EGLint error = eglGetError();
-    if (error && error != EGL_SUCCESS) {
-        ALOGE("%s: EGL error 0x%04x (%s)",
-                token, int(error), EGLUtils::strerror(error));
-    }
-}
-
-/*
- * Initialize the display to the specified values.
- *
- */
-
-DisplayHardware::DisplayHardware(
-        const sp<SurfaceFlinger>& flinger,
-        uint32_t dpy)
-    : DisplayHardwareBase(flinger, dpy),
-      mFlinger(flinger), mFlags(0), mHwc(0)
-{
-    init(dpy);
-}
-
-DisplayHardware::~DisplayHardware()
-{
-    fini();
-}
-
-float DisplayHardware::getDpiX() const          { return mDpiX; }
-float DisplayHardware::getDpiY() const          { return mDpiY; }
-float DisplayHardware::getDensity() const       { return mDensity; }
-float DisplayHardware::getRefreshRate() const   { return mRefreshRate; }
-int DisplayHardware::getWidth() const           { return mWidth; }
-int DisplayHardware::getHeight() const          { return mHeight; }
-PixelFormat DisplayHardware::getFormat() const  { return mFormat; }
-uint32_t DisplayHardware::getMaxTextureSize() const { return mMaxTextureSize; }
-
-uint32_t DisplayHardware::getMaxViewportDims() const {
-    return mMaxViewportDims[0] < mMaxViewportDims[1] ?
-            mMaxViewportDims[0] : mMaxViewportDims[1];
-}
-
-static status_t selectConfigForPixelFormat(
-        EGLDisplay dpy,
-        EGLint const* attrs,
-        PixelFormat format,
-        EGLConfig* outConfig)
-{
-    EGLConfig config = NULL;
-    EGLint numConfigs = -1, n=0;
-    eglGetConfigs(dpy, NULL, 0, &numConfigs);
-    EGLConfig* const configs = new EGLConfig[numConfigs];
-    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
-    for (int i=0 ; i<n ; i++) {
-        EGLint nativeVisualId = 0;
-        eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId);
-        if (nativeVisualId>0 && format == nativeVisualId) {
-            *outConfig = configs[i];
-            delete [] configs;
-            return NO_ERROR;
-        }
-    }
-    delete [] configs;
-    return NAME_NOT_FOUND;
-}
-
-
-void DisplayHardware::init(uint32_t dpy)
-{
-    mNativeWindow = new FramebufferNativeWindow();
-    framebuffer_device_t const * fbDev = mNativeWindow->getDevice();
-    if (!fbDev) {
-        ALOGE("Display subsystem failed to initialize. check logs. exiting...");
-        exit(0);
-    }
-
-    int format;
-    ANativeWindow const * const window = mNativeWindow.get();
-    window->query(window, NATIVE_WINDOW_FORMAT, &format);
-    mDpiX = mNativeWindow->xdpi;
-    mDpiY = mNativeWindow->ydpi;
-    mRefreshRate = fbDev->fps;
-
-    if (mDpiX == 0 || mDpiY == 0) {
-        ALOGE("invalid screen resolution from fb HAL (xdpi=%f, ydpi=%f), "
-               "defaulting to 160 dpi", mDpiX, mDpiY);
-        mDpiX = mDpiY = 160;
-    }
-
-    class Density {
-        static int getDensityFromProperty(char const* propName) {
-            char property[PROPERTY_VALUE_MAX];
-            int density = 0;
-            if (property_get(propName, property, NULL) > 0) {
-                density = atoi(property);
-            }
-            return density;
-        }
-    public:
-        static int getEmuDensity() {
-            return getDensityFromProperty("qemu.sf.lcd_density"); }
-        static int getBuildDensity()  {
-            return getDensityFromProperty("ro.sf.lcd_density"); }
-    };
-
-
-    // The density of the device is provided by a build property
-    mDensity = Density::getBuildDensity() / 160.0f;
-
-    if (mDensity == 0) {
-        // the build doesn't provide a density -- this is wrong!
-        // use xdpi instead
-        ALOGE("ro.sf.lcd_density must be defined as a build property");
-        mDensity = mDpiX / 160.0f;
-    }
-
-    if (Density::getEmuDensity()) {
-        // if "qemu.sf.lcd_density" is specified, it overrides everything
-        mDpiX = mDpiY = mDensity = Density::getEmuDensity();
-        mDensity /= 160.0f;
-    }
-
-
-
-    /* FIXME: this is a temporary HACK until we are able to report the refresh rate
-     * properly from the HAL. The WindowManagerService now relies on this value.
-     */
-#ifndef REFRESH_RATE
-    mRefreshRate = fbDev->fps;
-#else
-    mRefreshRate = REFRESH_RATE;
-#warning "refresh rate set via makefile to REFRESH_RATE"
-#endif
-
-    mRefreshPeriod = nsecs_t(1e9 / mRefreshRate);
-
-    EGLint w, h, dummy;
-    EGLint numConfigs=0;
-    EGLSurface surface;
-    EGLContext context;
-    EGLBoolean result;
-    status_t err;
-
-    // initialize EGL
-    EGLint attribs[] = {
-            EGL_SURFACE_TYPE,       EGL_WINDOW_BIT,
-            EGL_NONE,               0,
-            EGL_NONE
-    };
-
-    // debug: disable h/w rendering
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get("debug.sf.hw", property, NULL) > 0) {
-        if (atoi(property) == 0) {
-            ALOGW("H/W composition disabled");
-            attribs[2] = EGL_CONFIG_CAVEAT;
-            attribs[3] = EGL_SLOW_CONFIG;
-        }
-    }
-
-    // TODO: all the extensions below should be queried through
-    // eglGetProcAddress().
-
-    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
-    eglInitialize(display, NULL, NULL);
-    eglGetConfigs(display, NULL, 0, &numConfigs);
-
-    EGLConfig config = NULL;
-    err = selectConfigForPixelFormat(display, attribs, format, &config);
-    ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format");
-    
-    EGLint r,g,b,a;
-    eglGetConfigAttrib(display, config, EGL_RED_SIZE,   &r);
-    eglGetConfigAttrib(display, config, EGL_GREEN_SIZE, &g);
-    eglGetConfigAttrib(display, config, EGL_BLUE_SIZE,  &b);
-    eglGetConfigAttrib(display, config, EGL_ALPHA_SIZE, &a);
-
-    if (mNativeWindow->isUpdateOnDemand()) {
-        mFlags |= PARTIAL_UPDATES;
-    }
-    
-    if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
-        if (dummy == EGL_SLOW_CONFIG)
-            mFlags |= SLOW_CONFIG;
-    }
-
-    /*
-     * Create our main surface
-     */
-
-    surface = eglCreateWindowSurface(display, config, mNativeWindow.get(), NULL);
-    eglQuerySurface(display, surface, EGL_WIDTH,  &mWidth);
-    eglQuerySurface(display, surface, EGL_HEIGHT, &mHeight);
-
-    if (mFlags & PARTIAL_UPDATES) {
-        // if we have partial updates, we definitely don't need to
-        // preserve the backbuffer, which may be costly.
-        eglSurfaceAttrib(display, surface,
-                EGL_SWAP_BEHAVIOR, EGL_BUFFER_DESTROYED);
-    }
-
-    /*
-     * Create our OpenGL ES context
-     */
-    
-    EGLint contextAttributes[] = {
-#ifdef EGL_IMG_context_priority
-#ifdef HAS_CONTEXT_PRIORITY
-#warning "using EGL_IMG_context_priority"
-        EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
-#endif
-#endif
-        EGL_NONE, EGL_NONE
-    };
-    context = eglCreateContext(display, config, NULL, contextAttributes);
-
-    mDisplay = display;
-    mConfig  = config;
-    mSurface = surface;
-    mContext = context;
-    mFormat  = fbDev->format;
-    mPageFlipCount = 0;
-
-    /*
-     * Gather OpenGL ES extensions
-     */
-
-    result = eglMakeCurrent(display, surface, surface, context);
-    if (!result) {
-        ALOGE("Couldn't create a working GLES context. check logs. exiting...");
-        exit(0);
-    }
-
-    GLExtensions& extensions(GLExtensions::getInstance());
-    extensions.initWithGLStrings(
-            glGetString(GL_VENDOR),
-            glGetString(GL_RENDERER),
-            glGetString(GL_VERSION),
-            glGetString(GL_EXTENSIONS),
-            eglQueryString(display, EGL_VENDOR),
-            eglQueryString(display, EGL_VERSION),
-            eglQueryString(display, EGL_EXTENSIONS));
-
-    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
-    glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
-
-    ALOGI("EGL informations:");
-    ALOGI("# of configs : %d", numConfigs);
-    ALOGI("vendor    : %s", extensions.getEglVendor());
-    ALOGI("version   : %s", extensions.getEglVersion());
-    ALOGI("extensions: %s", extensions.getEglExtension());
-    ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
-    ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, config);
-
-    ALOGI("OpenGL informations:");
-    ALOGI("vendor    : %s", extensions.getVendor());
-    ALOGI("renderer  : %s", extensions.getRenderer());
-    ALOGI("version   : %s", extensions.getVersion());
-    ALOGI("extensions: %s", extensions.getExtension());
-    ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize);
-    ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]);
-    ALOGI("flags = %08x", mFlags);
-
-    // Unbind the context from this thread
-    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-
-
-    // initialize the H/W composer
-    mHwc = new HWComposer(mFlinger, *this, mRefreshPeriod);
-    if (mHwc->initCheck() == NO_ERROR) {
-        mHwc->setFrameBuffer(mDisplay, mSurface);
-    }
-}
-
-void DisplayHardware::setVSyncHandler(const sp<VSyncHandler>& handler) {
-    Mutex::Autolock _l(mLock);
-    mVSyncHandler = handler;
-}
-
-void DisplayHardware::eventControl(int event, int enabled) {
-    if (event == EVENT_VSYNC) {
-        mPowerHAL.vsyncHint(enabled);
-    }
-    mHwc->eventControl(event, enabled);
-}
-
-void DisplayHardware::onVSyncReceived(int dpy, nsecs_t timestamp) {
-    sp<VSyncHandler> handler;
-    { // scope for the lock
-        Mutex::Autolock _l(mLock);
-        mLastHwVSync = timestamp;
-        if (mVSyncHandler != NULL) {
-            handler = mVSyncHandler.promote();
-        }
-    }
-
-    if (handler != NULL) {
-        handler->onVSyncReceived(dpy, timestamp);
-    }
-}
-
-HWComposer& DisplayHardware::getHwComposer() const {
-    return *mHwc;
-}
-
-/*
- * Clean up.  Throw out our local state.
- *
- * (It's entirely possible we'll never get here, since this is meant
- * for real hardware, which doesn't restart.)
- */
-
-void DisplayHardware::fini()
-{
-    eglMakeCurrent(mDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
-    eglTerminate(mDisplay);
-}
-
-void DisplayHardware::releaseScreen() const
-{
-    DisplayHardwareBase::releaseScreen();
-    if (mHwc->initCheck() == NO_ERROR) {
-        mHwc->release();
-    }
-}
-
-void DisplayHardware::acquireScreen() const
-{
-    DisplayHardwareBase::acquireScreen();
-}
-
-uint32_t DisplayHardware::getPageFlipCount() const {
-    return mPageFlipCount;
-}
-
-nsecs_t DisplayHardware::getRefreshTimestamp() const {
-    // this returns the last refresh timestamp.
-    // if the last one is not available, we estimate it based on
-    // the refresh period and whatever closest timestamp we have.
-    Mutex::Autolock _l(mLock);
-    nsecs_t now = systemTime(CLOCK_MONOTONIC);
-    return now - ((now - mLastHwVSync) %  mRefreshPeriod);
-}
-
-nsecs_t DisplayHardware::getRefreshPeriod() const {
-    return mRefreshPeriod;
-}
-
-status_t DisplayHardware::compositionComplete() const {
-    return mNativeWindow->compositionComplete();
-}
-
-void DisplayHardware::flip(const Region& dirty) const
-{
-    checkGLErrors();
-
-    EGLDisplay dpy = mDisplay;
-    EGLSurface surface = mSurface;
-
-#ifdef EGL_ANDROID_swap_rectangle    
-    if (mFlags & SWAP_RECTANGLE) {
-        const Region newDirty(dirty.intersect(bounds()));
-        const Rect b(newDirty.getBounds());
-        eglSetSwapRectangleANDROID(dpy, surface,
-                b.left, b.top, b.width(), b.height());
-    } 
-#endif
-    
-    if (mFlags & PARTIAL_UPDATES) {
-        mNativeWindow->setUpdateRectangle(dirty.getBounds());
-    }
-    
-    mPageFlipCount++;
-
-    if (mHwc->initCheck() == NO_ERROR) {
-        mHwc->commit();
-    } else {
-        eglSwapBuffers(dpy, surface);
-    }
-    checkEGLErrors("eglSwapBuffers");
-
-    // for debugging
-    //glClearColor(1,0,0,0);
-    //glClear(GL_COLOR_BUFFER_BIT);
-}
-
-uint32_t DisplayHardware::getFlags() const
-{
-    return mFlags;
-}
-
-void DisplayHardware::makeCurrent() const
-{
-    eglMakeCurrent(mDisplay, mSurface, mSurface, mContext);
-}
-
-void DisplayHardware::dump(String8& res) const
-{
-    mNativeWindow->dump(res);
-}
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardware.h b/services/surfaceflinger/DisplayHardware/DisplayHardware.h
deleted file mode 100644
index 0604031..0000000
--- a/services/surfaceflinger/DisplayHardware/DisplayHardware.h
+++ /dev/null
@@ -1,152 +0,0 @@
-/*
- * 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_DISPLAY_HARDWARE_H
-#define ANDROID_DISPLAY_HARDWARE_H
-
-#include <stdlib.h>
-
-#include <ui/PixelFormat.h>
-#include <ui/Region.h>
-
-#include <GLES/gl.h>
-#include <GLES/glext.h>
-#include <EGL/egl.h>
-#include <EGL/eglext.h>
-
-#include "GLExtensions.h"
-
-#include "DisplayHardware/DisplayHardwareBase.h"
-#include "HWComposer.h"
-#include "PowerHAL.h"
-
-namespace android {
-
-class FramebufferNativeWindow;
-
-class DisplayHardware :
-    public DisplayHardwareBase,
-    public HWComposer::EventHandler
-{
-public:
-
-    class VSyncHandler : virtual public RefBase {
-        friend class DisplayHardware;
-        virtual void onVSyncReceived(int dpy, nsecs_t timestamp) = 0;
-    protected:
-        virtual ~VSyncHandler() {}
-    };
-
-    enum {
-        COPY_BITS_EXTENSION         = 0x00000008,
-        PARTIAL_UPDATES             = 0x00020000,   // video driver feature
-        SLOW_CONFIG                 = 0x00040000,   // software
-        SWAP_RECTANGLE              = 0x00080000,
-    };
-
-    DisplayHardware(
-            const sp<SurfaceFlinger>& flinger,
-            uint32_t displayIndex);
-
-    virtual ~DisplayHardware();
-
-    void releaseScreen() const;
-    void acquireScreen() const;
-
-    // Flip the front and back buffers if the back buffer is "dirty".  Might
-    // be instantaneous, might involve copying the frame buffer around.
-    void flip(const Region& dirty) const;
-
-    float       getDpiX() const;
-    float       getDpiY() const;
-    float       getRefreshRate() const;
-    float       getDensity() const;
-    int         getWidth() const;
-    int         getHeight() const;
-    PixelFormat getFormat() const;
-    uint32_t    getFlags() const;
-    uint32_t    getMaxTextureSize() const;
-    uint32_t    getMaxViewportDims() const;
-    nsecs_t     getRefreshPeriod() const;
-    nsecs_t     getRefreshTimestamp() const;
-    void        makeCurrent() const;
-
-
-    void setVSyncHandler(const sp<VSyncHandler>& handler);
-
-    enum {
-        EVENT_VSYNC = HWC_EVENT_VSYNC
-    };
-
-    void eventControl(int event, int enabled);
-
-
-    uint32_t getPageFlipCount() const;
-    EGLDisplay getEGLDisplay() const { return mDisplay; }
-
-    void dump(String8& res) const;
-
-    // Hardware Composer
-    HWComposer& getHwComposer() const;
-    
-    status_t compositionComplete() const;
-    
-    Rect getBounds() const {
-        return Rect(mWidth, mHeight);
-    }
-    inline Rect bounds() const { return getBounds(); }
-
-private:
-    virtual void onVSyncReceived(int dpy, nsecs_t timestamp);
-    void init(uint32_t displayIndex) __attribute__((noinline));
-    void fini() __attribute__((noinline));
-
-    sp<SurfaceFlinger> mFlinger;
-    EGLDisplay      mDisplay;
-    EGLSurface      mSurface;
-    EGLContext      mContext;
-    EGLConfig       mConfig;
-    float           mDpiX;
-    float           mDpiY;
-    float           mRefreshRate;
-    float           mDensity;
-    int             mWidth;
-    int             mHeight;
-    PixelFormat     mFormat;
-    uint32_t        mFlags;
-    mutable uint32_t mPageFlipCount;
-    GLint           mMaxViewportDims[2];
-    GLint           mMaxTextureSize;
-
-    nsecs_t         mRefreshPeriod;
-    mutable nsecs_t mLastHwVSync;
-
-    // constant once set
-    HWComposer*     mHwc;
-    PowerHAL        mPowerHAL;
-
-
-    mutable Mutex   mLock;
-
-    // protected by mLock
-    wp<VSyncHandler>    mVSyncHandler;
-
-    sp<FramebufferNativeWindow> mNativeWindow;
-};
-
-}; // namespace android
-
-#endif // ANDROID_DISPLAY_HARDWARE_H
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp
deleted file mode 100644
index d3a8bde..0000000
--- a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.cpp
+++ /dev/null
@@ -1,136 +0,0 @@
-/*
- * Copyright (C) 2012 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 <errno.h>
-#include <stdlib.h>
-#include <stdio.h>
-#include <string.h>
-
-#include <unistd.h>
-#include <fcntl.h>
-
-#include <utils/Log.h>
-
-#include "DisplayHardware/DisplayHardwareBase.h"
-#include "SurfaceFlinger.h"
-
-// ----------------------------------------------------------------------------
-namespace android {
-
-static char const * const kSleepFileName = "/sys/power/wait_for_fb_sleep";
-static char const * const kWakeFileName  = "/sys/power/wait_for_fb_wake";
-
-// ----------------------------------------------------------------------------
-
-DisplayHardwareBase::DisplayEventThread::DisplayEventThread(
-        const sp<SurfaceFlinger>& flinger)
-    : Thread(false), mFlinger(flinger) {
-}
-
-DisplayHardwareBase::DisplayEventThread::~DisplayEventThread() {
-}
-
-status_t DisplayHardwareBase::DisplayEventThread::initCheck() const {
-    return ((access(kSleepFileName, R_OK) == 0 &&
-            access(kWakeFileName, R_OK) == 0)) ? NO_ERROR : NO_INIT;
-}
-
-bool DisplayHardwareBase::DisplayEventThread::threadLoop() {
-
-    if (waitForFbSleep() == NO_ERROR) {
-        sp<SurfaceFlinger> flinger = mFlinger.promote();
-        ALOGD("About to give-up screen, flinger = %p", flinger.get());
-        if (flinger != 0) {
-            flinger->screenReleased();
-        }
-        if (waitForFbWake() == NO_ERROR) {
-            ALOGD("Screen about to return, flinger = %p", flinger.get());
-            if (flinger != 0) {
-                flinger->screenAcquired();
-            }
-            return true;
-        }
-    }
-
-    // error, exit the thread
-    return false;
-}
-
-status_t DisplayHardwareBase::DisplayEventThread::waitForFbSleep() {
-    int err = 0;
-    char buf;
-    int fd = open(kSleepFileName, O_RDONLY, 0);
-    // if the file doesn't exist, the error will be caught in read() below
-    do {
-        err = read(fd, &buf, 1);
-    } while (err < 0 && errno == EINTR);
-    close(fd);
-    ALOGE_IF(err<0, "*** ANDROID_WAIT_FOR_FB_SLEEP failed (%s)", strerror(errno));
-    return err < 0 ? -errno : int(NO_ERROR);
-}
-
-status_t DisplayHardwareBase::DisplayEventThread::waitForFbWake() {
-    int err = 0;
-    char buf;
-    int fd = open(kWakeFileName, O_RDONLY, 0);
-    // if the file doesn't exist, the error will be caught in read() below
-    do {
-        err = read(fd, &buf, 1);
-    } while (err < 0 && errno == EINTR);
-    close(fd);
-    ALOGE_IF(err<0, "*** ANDROID_WAIT_FOR_FB_WAKE failed (%s)", strerror(errno));
-    return err < 0 ? -errno : int(NO_ERROR);
-}
-
-// ----------------------------------------------------------------------------
-
-DisplayHardwareBase::DisplayHardwareBase(const sp<SurfaceFlinger>& flinger,
-        uint32_t displayIndex) 
-{
-    mScreenAcquired = true;
-    mDisplayEventThread = new DisplayEventThread(flinger);
-}
-
-void DisplayHardwareBase::startSleepManagement() const {
-    if (mDisplayEventThread->initCheck() == NO_ERROR) {
-        mDisplayEventThread->run("DisplayEventThread", PRIORITY_URGENT_DISPLAY);
-    } else {
-        ALOGW("/sys/power/wait_for_fb_{wake|sleep} don't exist");
-    }
-}
-
-DisplayHardwareBase::~DisplayHardwareBase() {
-    // request exit
-    mDisplayEventThread->requestExitAndWait();
-}
-
-bool DisplayHardwareBase::canDraw() const {
-    return mScreenAcquired;
-}
-
-void DisplayHardwareBase::releaseScreen() const {
-    mScreenAcquired = false;
-}
-
-void DisplayHardwareBase::acquireScreen() const {
-    mScreenAcquired = true;
-}
-
-bool DisplayHardwareBase::isScreenAcquired() const {
-    return mScreenAcquired;
-}
-
-}; // namespace android
diff --git a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h b/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h
deleted file mode 100644
index 6857481..0000000
--- a/services/surfaceflinger/DisplayHardware/DisplayHardwareBase.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (C) 2012 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_DISPLAY_HARDWARE_BASE_H
-#define ANDROID_DISPLAY_HARDWARE_BASE_H
-
-#include <stdint.h>
-#include <utils/RefBase.h>
-#include <utils/StrongPointer.h>
-#include <utils/threads.h>
-
-namespace android {
-
-class SurfaceFlinger; 
-
-class DisplayHardwareBase
-{
-public:
-    DisplayHardwareBase(
-            const sp<SurfaceFlinger>& flinger,
-            uint32_t displayIndex);
-
-    ~DisplayHardwareBase();
-
-    void startSleepManagement() const;
-
-    // console management
-    void releaseScreen() const;
-    void acquireScreen() const;
-    bool isScreenAcquired() const;
-
-    bool canDraw() const;
-
-
-private:
-    class DisplayEventThread : public Thread {
-        wp<SurfaceFlinger> mFlinger;
-        status_t waitForFbSleep();
-        status_t waitForFbWake();
-    public:
-        DisplayEventThread(const sp<SurfaceFlinger>& flinger);
-        virtual ~DisplayEventThread();
-        virtual bool threadLoop();
-        status_t initCheck() const;
-    };
-
-    sp<DisplayEventThread>  mDisplayEventThread;
-    mutable int             mScreenAcquired;
-};
-
-}; // namespace android
-
-#endif // ANDROID_DISPLAY_HARDWARE_BASE_H
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
new file mode 100644
index 0000000..6d33592
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.cpp
@@ -0,0 +1,203 @@
+/*
+ **
+ ** Copyright 2012 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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+
+#include <cutils/log.h>
+
+#include <utils/String8.h>
+
+#include <ui/Rect.h>
+
+#include <EGL/egl.h>
+
+#include <hardware/hardware.h>
+#include <gui/SurfaceTextureClient.h>
+#include <ui/GraphicBuffer.h>
+
+#include "DisplayHardware/FramebufferSurface.h"
+
+// ----------------------------------------------------------------------------
+namespace android {
+// ----------------------------------------------------------------------------
+
+sp<FramebufferSurface> FramebufferSurface::create() {
+    sp<FramebufferSurface> result = new FramebufferSurface();
+    if (result->fbDev == NULL) {
+        result = NULL;
+    }
+    return result;
+}
+
+// ----------------------------------------------------------------------------
+
+class GraphicBufferAlloc : public BnGraphicBufferAlloc {
+public:
+    GraphicBufferAlloc() { };
+    virtual ~GraphicBufferAlloc() { };
+    virtual sp<GraphicBuffer> createGraphicBuffer(uint32_t w, uint32_t h,
+            PixelFormat format, uint32_t usage, status_t* error) {
+        sp<GraphicBuffer> graphicBuffer(new GraphicBuffer(w, h, format, usage));
+        return graphicBuffer;
+    }
+};
+
+
+/*
+ * This implements the (main) framebuffer management. This class is used
+ * mostly by SurfaceFlinger, but also by command line GL application.
+ *
+ */
+
+FramebufferSurface::FramebufferSurface():
+    ConsumerBase(new BufferQueue(true, NUM_FRAME_BUFFERS,
+            new GraphicBufferAlloc())),
+    fbDev(0),
+    mCurrentBufferSlot(-1),
+    mCurrentBuffer(0)
+{
+    hw_module_t const* module;
+
+    if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
+        int stride;
+        int err;
+        int i;
+        err = framebuffer_open(module, &fbDev);
+        ALOGE_IF(err, "couldn't open framebuffer HAL (%s)", strerror(-err));
+
+        // bail out if we can't initialize the modules
+        if (!fbDev)
+            return;
+
+        mName = "FramebufferSurface";
+        mBufferQueue->setConsumerName(mName);
+        mBufferQueue->setConsumerUsageBits(GRALLOC_USAGE_HW_FB |
+                GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_COMPOSER);
+        mBufferQueue->setDefaultBufferFormat(fbDev->format);
+        mBufferQueue->setDefaultBufferSize(fbDev->width, fbDev->height);
+        mBufferQueue->setSynchronousMode(true);
+        mBufferQueue->setBufferCountServer(NUM_FRAME_BUFFERS);
+    } else {
+        ALOGE("Couldn't get gralloc module");
+    }
+}
+
+status_t FramebufferSurface::nextBuffer(sp<GraphicBuffer>* buffer) {
+    Mutex::Autolock lock(mMutex);
+
+    BufferQueue::BufferItem item;
+    status_t err = acquireBufferLocked(&item);
+    if (err == BufferQueue::NO_BUFFER_AVAILABLE) {
+        if (buffer != NULL) {
+            *buffer = mCurrentBuffer;
+        }
+        return NO_ERROR;
+    } else if (err != NO_ERROR) {
+        ALOGE("error acquiring buffer: %s (%d)", strerror(-err), err);
+        return err;
+    }
+
+    // If the BufferQueue has freed and reallocated a buffer in mCurrentSlot
+    // then we may have acquired the slot we already own.  If we had released
+    // our current buffer before we call acquireBuffer then that release call
+    // would have returned STALE_BUFFER_SLOT, and we would have called
+    // freeBufferLocked on that slot.  Because the buffer slot has already
+    // been overwritten with the new buffer all we have to do is skip the
+    // releaseBuffer call and we should be in the same state we'd be in if we
+    // had released the old buffer first.
+    if (mCurrentBufferSlot != BufferQueue::INVALID_BUFFER_SLOT &&
+        item.mBuf != mCurrentBufferSlot) {
+        // Release the previous buffer.
+        err = releaseBufferLocked(mCurrentBufferSlot, EGL_NO_DISPLAY,
+                EGL_NO_SYNC_KHR, Fence::NO_FENCE);
+        if (err != NO_ERROR && err != BufferQueue::STALE_BUFFER_SLOT) {
+            ALOGE("error releasing buffer: %s (%d)", strerror(-err), err);
+            return err;
+        }
+    }
+
+    mCurrentBufferSlot = item.mBuf;
+    mCurrentBuffer = mSlots[mCurrentBufferSlot].mGraphicBuffer;
+    if (item.mFence != NULL) {
+        item.mFence->wait(Fence::TIMEOUT_NEVER);
+    }
+
+    if (buffer != NULL) {
+        *buffer = mCurrentBuffer;
+    }
+
+    return NO_ERROR;
+}
+
+FramebufferSurface::~FramebufferSurface() {
+    if (fbDev) {
+        framebuffer_close(fbDev);
+    }
+}
+
+void FramebufferSurface::onFrameAvailable() {
+    // XXX: The following code is here temporarily as part of the transition
+    // away from the framebuffer HAL.
+    sp<GraphicBuffer> buf;
+    status_t err = nextBuffer(&buf);
+    if (err != NO_ERROR) {
+        ALOGE("error latching next FramebufferSurface buffer: %s (%d)",
+                strerror(-err), err);
+        return;
+    }
+    err = fbDev->post(fbDev, buf->handle);
+    if (err != NO_ERROR) {
+        ALOGE("error posting framebuffer: %d", err);
+    }
+}
+
+void FramebufferSurface::freeBufferLocked(int slotIndex) {
+    ConsumerBase::freeBufferLocked(slotIndex);
+    if (slotIndex == mCurrentBufferSlot) {
+        mCurrentBufferSlot = BufferQueue::INVALID_BUFFER_SLOT;
+    }
+}
+
+status_t FramebufferSurface::setUpdateRectangle(const Rect& r)
+{
+    return INVALID_OPERATION;
+}
+
+status_t FramebufferSurface::compositionComplete()
+{
+    if (fbDev->compositionComplete) {
+        return fbDev->compositionComplete(fbDev);
+    }
+    return INVALID_OPERATION;
+}
+
+void FramebufferSurface::dump(String8& result) {
+    if (fbDev->common.version >= 1 && fbDev->dump) {
+        const size_t SIZE = 4096;
+        char buffer[SIZE];
+        fbDev->dump(fbDev, buffer, SIZE);
+        result.append(buffer);
+    }
+    ConsumerBase::dump(result);
+}
+
+// ----------------------------------------------------------------------------
+}; // namespace android
+// ----------------------------------------------------------------------------
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.h b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
new file mode 100644
index 0000000..bfa500b
--- /dev/null
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
@@ -0,0 +1,83 @@
+/*
+ * 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_SF_FRAMEBUFFER_SURFACE_H
+#define ANDROID_SF_FRAMEBUFFER_SURFACE_H
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <gui/ConsumerBase.h>
+
+#define NUM_FRAME_BUFFERS  2
+
+// ---------------------------------------------------------------------------
+namespace android {
+// ---------------------------------------------------------------------------
+
+class Rect;
+class String8;
+
+// ---------------------------------------------------------------------------
+
+class FramebufferSurface : public ConsumerBase {
+public:
+
+    static sp<FramebufferSurface> create();
+
+    bool isUpdateOnDemand() const { return false; }
+    status_t setUpdateRectangle(const Rect& updateRect);
+    status_t compositionComplete();
+
+    virtual void dump(String8& result);
+
+    // nextBuffer waits for and then latches the next buffer from the
+    // BufferQueue and releases the previously latched buffer to the
+    // BufferQueue.  The new buffer is returned in the 'buffer' argument.
+    status_t nextBuffer(sp<GraphicBuffer>* buffer);
+
+    // FIXME: currently there are information we can only get from the
+    // FB HAL, and FB HAL can only be instantiated once on some devices.
+    // Eventually this functionality will have to move in HWC or somewhere else.
+    const framebuffer_device_t* getFbHal() const {
+        return fbDev;
+    }
+
+private:
+    FramebufferSurface();
+    virtual ~FramebufferSurface(); // this class cannot be overloaded
+
+    virtual void onFrameAvailable();
+    virtual void freeBufferLocked(int slotIndex);
+
+    framebuffer_device_t* fbDev;
+
+    // mCurrentBufferIndex is the slot index of the current buffer or
+    // INVALID_BUFFER_SLOT to indicate that either there is no current buffer
+    // or the buffer is not associated with a slot.
+    int mCurrentBufferSlot;
+
+    // mCurrentBuffer is the current buffer or NULL to indicate that there is
+    // no current buffer.
+    sp<GraphicBuffer> mCurrentBuffer;
+};
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+// ---------------------------------------------------------------------------
+
+#endif // ANDROID_SF_FRAMEBUFFER_SURFACE_H
+
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.cpp b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
index 65763db..1678fe1 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.cpp
@@ -16,6 +16,9 @@
 
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
+// Uncomment this to remove support for HWC_DEVICE_API_VERSION_0_3 and older
+#define HWC_REMOVE_DEPRECATED_VERSIONS 1
+
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -28,63 +31,123 @@
 #include <utils/Trace.h>
 #include <utils/Vector.h>
 
+#include <ui/GraphicBuffer.h>
+
 #include <hardware/hardware.h>
 #include <hardware/hwcomposer.h>
 
 #include <cutils/log.h>
 #include <cutils/properties.h>
 
-#include <EGL/egl.h>
-
+#include "Layer.h"           // needed only for debugging
 #include "LayerBase.h"
 #include "HWComposer.h"
 #include "SurfaceFlinger.h"
 
 namespace android {
+
+static bool hwcHasVersion(const hwc_composer_device_1_t* hwc, uint32_t version) {
+    return hwc->common.version >= version;
+}
+
+// ---------------------------------------------------------------------------
+
+struct HWComposer::cb_context {
+    struct callbacks : public hwc_procs_t {
+        // these are here to facilitate the transition when adding
+        // new callbacks (an implementation can check for NULL before
+        // calling a new callback).
+        void (*zero[4])(void);
+    };
+    callbacks procs;
+    HWComposer* hwc;
+};
+
 // ---------------------------------------------------------------------------
 
 HWComposer::HWComposer(
         const sp<SurfaceFlinger>& flinger,
         EventHandler& handler,
-        nsecs_t refreshPeriod)
+        framebuffer_device_t const* fbDev)
     : mFlinger(flinger),
-      mModule(0), mHwc(0), mList(0), mCapacity(0),
-      mNumOVLayers(0), mNumFBLayers(0),
-      mDpy(EGL_NO_DISPLAY), mSur(EGL_NO_SURFACE),
+      mModule(0), mHwc(0), mNumDisplays(1),
+      mCBContext(new cb_context),
       mEventHandler(handler),
-      mRefreshPeriod(refreshPeriod),
       mVSyncCount(0), mDebugForceFakeVSync(false)
 {
+    for (size_t i =0 ; i<MAX_DISPLAYS ; i++) {
+        mLists[i] = 0;
+    }
+
     char value[PROPERTY_VALUE_MAX];
     property_get("debug.sf.no_hw_vsync", value, "0");
     mDebugForceFakeVSync = atoi(value);
 
-    bool needVSyncThread = false;
+    bool needVSyncThread = true;
     int err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
     ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
     if (err == 0) {
-        err = hwc_open(mModule, &mHwc);
+        err = hwc_open_1(mModule, &mHwc);
         ALOGE_IF(err, "%s device failed to initialize (%s)",
                 HWC_HARDWARE_COMPOSER, strerror(-err));
         if (err == 0) {
-            if (mHwc->registerProcs) {
-                mCBContext.hwc = this;
-                mCBContext.procs.invalidate = &hook_invalidate;
-                mCBContext.procs.vsync = &hook_vsync;
-                mHwc->registerProcs(mHwc, &mCBContext.procs);
-                memset(mCBContext.procs.zero, 0, sizeof(mCBContext.procs.zero));
-            }
-            if (mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
-                if (mDebugForceFakeVSync) {
-                    // make sure to turn h/w vsync off in "fake vsync" mode
-                    mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0);
-                }
-            } else {
-                needVSyncThread = true;
+            if (mHwc->common.version < HWC_DEVICE_API_VERSION_1_0) {
+                ALOGE("%s device version %#x too old, will not be used",
+                        HWC_HARDWARE_COMPOSER, mHwc->common.version);
+                hwc_close_1(mHwc);
+                mHwc = NULL;
             }
         }
-    } else {
-        needVSyncThread = true;
+
+        if (mHwc) {
+            if (mHwc->registerProcs) {
+                mCBContext->hwc = this;
+                mCBContext->procs.invalidate = &hook_invalidate;
+                mCBContext->procs.vsync = &hook_vsync;
+                memset(mCBContext->procs.zero, 0, sizeof(mCBContext->procs.zero));
+                mHwc->registerProcs(mHwc, &mCBContext->procs);
+            }
+
+            // always turn vsync off when we start
+            needVSyncThread = false;
+            mHwc->eventControl(mHwc, 0, HWC_EVENT_VSYNC, 0);
+
+            int period;
+            if (mHwc->query(mHwc, HWC_VSYNC_PERIOD, &period) == NO_ERROR) {
+                mDisplayData[HWC_DISPLAY_PRIMARY].refresh = nsecs_t(period);
+            }
+
+            // these IDs are always reserved
+            for (size_t i=0 ; i<HWC_NUM_DISPLAY_TYPES ; i++) {
+                mAllocatedDisplayIDs.markBit(i);
+                // TODO: we query xdpi / ydpi / refresh
+            }
+
+            // the number of displays we actually have depends on the
+            // hw composer version
+            if (mHwc->common.version == HWC_DEVICE_API_VERSION_1_1) {
+                // 1.1 adds support for multiple displays
+                mNumDisplays = HWC_NUM_DISPLAY_TYPES;
+            } else if (mHwc->common.version > HWC_DEVICE_API_VERSION_1_1) {
+                // 1.2 adds support for virtual displays
+                mNumDisplays = MAX_DISPLAYS;
+            }
+        }
+    }
+
+    if (fbDev) {
+        // if we're here it means we are on version 1.0
+        DisplayData& disp(mDisplayData[HWC_DISPLAY_PRIMARY]);
+        disp.xdpi = fbDev->xdpi;
+        disp.ydpi = fbDev->ydpi;
+        if (disp.refresh == 0) {
+            disp.refresh = nsecs_t(1e9 / fbDev->fps);
+            ALOGW("getting VSYNC period from fb HAL: %lld", disp.refresh);
+        }
+        if (disp.refresh == 0) {
+            disp.refresh = nsecs_t(1e9 / 60.0);
+            ALOGW("getting VSYNC period thin air: %lld", mDisplayData[HWC_DISPLAY_PRIMARY].refresh);
+        }
     }
 
     if (needVSyncThread) {
@@ -94,26 +157,31 @@
 }
 
 HWComposer::~HWComposer() {
-    eventControl(EVENT_VSYNC, 0);
-    free(mList);
+    mHwc->eventControl(mHwc, 0, EVENT_VSYNC, 0);
     if (mVSyncThread != NULL) {
         mVSyncThread->requestExitAndWait();
     }
     if (mHwc) {
-        hwc_close(mHwc);
+        hwc_close_1(mHwc);
     }
+    delete mCBContext;
 }
 
 status_t HWComposer::initCheck() const {
     return mHwc ? NO_ERROR : NO_INIT;
 }
 
-void HWComposer::hook_invalidate(struct hwc_procs* procs) {
-    reinterpret_cast<cb_context *>(procs)->hwc->invalidate();
+void HWComposer::hook_invalidate(const struct hwc_procs* procs) {
+    cb_context* ctx = reinterpret_cast<cb_context*>(
+            const_cast<hwc_procs_t*>(procs));
+    ctx->hwc->invalidate();
 }
 
-void HWComposer::hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp) {
-    reinterpret_cast<cb_context *>(procs)->hwc->vsync(dpy, timestamp);
+void HWComposer::hook_vsync(const struct hwc_procs* procs, int dpy,
+        int64_t timestamp) {
+    cb_context* ctx = reinterpret_cast<cb_context*>(
+            const_cast<hwc_procs_t*>(procs));
+    ctx->hwc->vsync(dpy, timestamp);
 }
 
 void HWComposer::invalidate() {
@@ -123,13 +191,57 @@
 void HWComposer::vsync(int dpy, int64_t timestamp) {
     ATRACE_INT("VSYNC", ++mVSyncCount&1);
     mEventHandler.onVSyncReceived(dpy, timestamp);
+    Mutex::Autolock _l(mLock);
+    mLastHwVSync = timestamp;
+}
+
+int32_t HWComposer::allocateDisplayId() {
+    if (mAllocatedDisplayIDs.count() >= mNumDisplays) {
+        return NO_MEMORY;
+    }
+    int32_t id = mAllocatedDisplayIDs.firstUnmarkedBit();
+    mAllocatedDisplayIDs.markBit(id);
+    return id;
+}
+
+status_t HWComposer::freeDisplayId(int32_t id) {
+    if (id < HWC_NUM_DISPLAY_TYPES) {
+        // cannot free the reserved IDs
+        return BAD_VALUE;
+    }
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
+        return BAD_INDEX;
+    }
+    mAllocatedDisplayIDs.clearBit(id);
+    return NO_ERROR;
+}
+
+nsecs_t HWComposer::getRefreshPeriod() const {
+    return mDisplayData[HWC_DISPLAY_PRIMARY].refresh;
+}
+
+nsecs_t HWComposer::getRefreshTimestamp() const {
+    // this returns the last refresh timestamp.
+    // if the last one is not available, we estimate it based on
+    // the refresh period and whatever closest timestamp we have.
+    Mutex::Autolock _l(mLock);
+    nsecs_t now = systemTime(CLOCK_MONOTONIC);
+    return now - ((now - mLastHwVSync) %  mDisplayData[HWC_DISPLAY_PRIMARY].refresh);
+}
+
+float HWComposer::getDpiX() const {
+    return mDisplayData[HWC_DISPLAY_PRIMARY].xdpi;
+}
+
+float HWComposer::getDpiY() const {
+    return mDisplayData[HWC_DISPLAY_PRIMARY].ydpi;
 }
 
 void HWComposer::eventControl(int event, int enabled) {
     status_t err = NO_ERROR;
-    if (mHwc && mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
+    if (mHwc) {
         if (!mDebugForceFakeVSync) {
-            err = mHwc->methods->eventControl(mHwc, event, enabled);
+            err = mHwc->eventControl(mHwc, 0, event, enabled);
             // error here should not happen -- not sure what we should
             // do if it does.
             ALOGE_IF(err, "eventControl(%d, %d) failed %s",
@@ -142,130 +254,286 @@
     }
 }
 
-void HWComposer::setFrameBuffer(EGLDisplay dpy, EGLSurface sur) {
-    mDpy = (hwc_display_t)dpy;
-    mSur = (hwc_surface_t)sur;
-}
+status_t HWComposer::createWorkList(int32_t id, size_t numLayers) {
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
+        return BAD_INDEX;
+    }
 
-status_t HWComposer::createWorkList(size_t numLayers) {
     if (mHwc) {
-        if (!mList || mCapacity < numLayers) {
-            free(mList);
-            size_t size = sizeof(hwc_layer_list) + numLayers*sizeof(hwc_layer_t);
-            mList = (hwc_layer_list_t*)malloc(size);
-            mCapacity = numLayers;
+        DisplayData& disp(mDisplayData[id]);
+        if (disp.capacity < numLayers || disp.list == NULL) {
+            const size_t size = sizeof(hwc_display_contents_1_t)
+                    + numLayers * sizeof(hwc_layer_1_t);
+            free(disp.list);
+            disp.list = (hwc_display_contents_1_t*)malloc(size);
+            disp.capacity = numLayers;
         }
-        mList->flags = HWC_GEOMETRY_CHANGED;
-        mList->numHwLayers = numLayers;
+        disp.list->flags = HWC_GEOMETRY_CHANGED;
+        disp.list->numHwLayers = numLayers;
+        disp.list->flipFenceFd = -1;
     }
     return NO_ERROR;
 }
 
-status_t HWComposer::prepare() const {
-    int err = mHwc->prepare(mHwc, mList);
+status_t HWComposer::prepare() {
+    for (size_t i=0 ; i<mNumDisplays ; i++) {
+        mLists[i] = mDisplayData[i].list;
+        if (mLists[i]) {
+            mLists[i]->dpy = EGL_NO_DISPLAY;
+            mLists[i]->sur = EGL_NO_SURFACE;
+        }
+    }
+    int err = mHwc->prepare(mHwc, mNumDisplays, mLists);
     if (err == NO_ERROR) {
-        size_t numOVLayers = 0;
-        size_t numFBLayers = 0;
-        size_t count = mList->numHwLayers;
-        for (size_t i=0 ; i<count ; i++) {
-            hwc_layer& l(mList->hwLayers[i]);
-            if (l.flags & HWC_SKIP_LAYER) {
-                l.compositionType = HWC_FRAMEBUFFER;
-            }
-            switch (l.compositionType) {
-                case HWC_OVERLAY:
-                    numOVLayers++;
-                    break;
-                case HWC_FRAMEBUFFER:
-                    numFBLayers++;
-                    break;
+        // here we're just making sure that "skip" layers are set
+        // to HWC_FRAMEBUFFER and we're also counting how many layers
+        // we have of each type.
+        for (size_t i=0 ; i<mNumDisplays ; i++) {
+            DisplayData& disp(mDisplayData[i]);
+            disp.hasFbComp = false;
+            disp.hasOvComp = false;
+            if (disp.list) {
+                for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
+                    hwc_layer_1_t& l = disp.list->hwLayers[i];
+                    if (l.flags & HWC_SKIP_LAYER) {
+                        l.compositionType = HWC_FRAMEBUFFER;
+                    }
+                    if (l.compositionType == HWC_FRAMEBUFFER) {
+                        disp.hasFbComp = true;
+                    }
+                    if (l.compositionType == HWC_OVERLAY) {
+                        disp.hasOvComp = true;
+                    }
+                }
             }
         }
-        mNumOVLayers = numOVLayers;
-        mNumFBLayers = numFBLayers;
     }
     return (status_t)err;
 }
 
-size_t HWComposer::getLayerCount(int type) const {
-    switch (type) {
-        case HWC_OVERLAY:
-            return mNumOVLayers;
-        case HWC_FRAMEBUFFER:
-            return mNumFBLayers;
-    }
-    return 0;
+bool HWComposer::hasHwcComposition(int32_t id) const {
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
+        return false;
+    return mDisplayData[id].hasOvComp;
 }
 
-status_t HWComposer::commit() const {
-    int err = mHwc->set(mHwc, mDpy, mSur, mList);
-    if (mList) {
-        mList->flags &= ~HWC_GEOMETRY_CHANGED;
+bool HWComposer::hasGlesComposition(int32_t id) const {
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id))
+        return false;
+    return mDisplayData[id].hasFbComp;
+}
+
+status_t HWComposer::commit() {
+    int err = NO_ERROR;
+    if (mHwc) {
+        if (mHwc->common.version == HWC_DEVICE_API_VERSION_1_0) {
+            // On version 1.0, the OpenGL ES target surface is communicated
+            // by the (dpy, sur) fields and we are guaranteed to have only
+            // a single display.
+            mLists[0]->dpy = eglGetCurrentDisplay();
+            mLists[0]->sur = eglGetCurrentSurface(EGL_DRAW);
+        }
+
+        err = mHwc->set(mHwc, mNumDisplays, mLists);
+
+        for (size_t i=0 ; i<mNumDisplays ; i++) {
+            DisplayData& disp(mDisplayData[i]);
+            if (disp.list) {
+                if (disp.list->flipFenceFd != -1) {
+                    close(disp.list->flipFenceFd);
+                    disp.list->flipFenceFd = -1;
+                }
+                disp.list->flags &= ~HWC_GEOMETRY_CHANGED;
+            }
+        }
     }
     return (status_t)err;
 }
 
 status_t HWComposer::release() const {
     if (mHwc) {
-        if (mHwc->common.version >= HWC_DEVICE_API_VERSION_0_3) {
-            mHwc->methods->eventControl(mHwc, HWC_EVENT_VSYNC, 0);
-        }
-        int err = mHwc->set(mHwc, NULL, NULL, NULL);
-        return (status_t)err;
+        mHwc->eventControl(mHwc, 0, HWC_EVENT_VSYNC, 0);
+        return (status_t)mHwc->blank(mHwc, 0, 1);
     }
     return NO_ERROR;
 }
 
-status_t HWComposer::disable() {
+status_t HWComposer::acquire() const {
     if (mHwc) {
-        free(mList);
-        mList = NULL;
-        int err = mHwc->prepare(mHwc, NULL);
-        return (status_t)err;
+        return (status_t)mHwc->blank(mHwc, 0, 0);
     }
     return NO_ERROR;
 }
 
-size_t HWComposer::getNumLayers() const {
-    return mList ? mList->numHwLayers : 0;
+size_t HWComposer::getNumLayers(int32_t id) const {
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
+        return 0;
+    }
+    return (mHwc && mDisplayData[id].list) ?
+            mDisplayData[id].list->numHwLayers : 0;
 }
 
-hwc_layer_t* HWComposer::getLayers() const {
-    return mList ? mList->hwLayers : 0;
+/*
+ * Helper template to implement a concrete HWCLayer
+ * This holds the pointer to the concrete hwc layer type
+ * and implements the "iterable" side of HWCLayer.
+ */
+template<typename CONCRETE, typename HWCTYPE>
+class Iterable : public HWComposer::HWCLayer {
+protected:
+    HWCTYPE* const mLayerList;
+    HWCTYPE* mCurrentLayer;
+    Iterable(HWCTYPE* layer) : mLayerList(layer), mCurrentLayer(layer) { }
+    inline HWCTYPE const * getLayer() const { return mCurrentLayer; }
+    inline HWCTYPE* getLayer() { return mCurrentLayer; }
+    virtual ~Iterable() { }
+private:
+    // returns a copy of ourselves
+    virtual HWComposer::HWCLayer* dup() {
+        return new CONCRETE( static_cast<const CONCRETE&>(*this) );
+    }
+    virtual status_t setLayer(size_t index) {
+        mCurrentLayer = &mLayerList[index];
+        return NO_ERROR;
+    }
+};
+
+/*
+ * Concrete implementation of HWCLayer for HWC_DEVICE_API_VERSION_1_0.
+ * This implements the HWCLayer side of HWCIterableLayer.
+ */
+class HWCLayerVersion1 : public Iterable<HWCLayerVersion1, hwc_layer_1_t> {
+public:
+    HWCLayerVersion1(hwc_layer_1_t* layer)
+        : Iterable<HWCLayerVersion1, hwc_layer_1_t>(layer) { }
+
+    virtual int32_t getCompositionType() const {
+        return getLayer()->compositionType;
+    }
+    virtual uint32_t getHints() const {
+        return getLayer()->hints;
+    }
+    virtual int getAndResetReleaseFenceFd() {
+        int fd = getLayer()->releaseFenceFd;
+        getLayer()->releaseFenceFd = -1;
+        return fd;
+    }
+    virtual void setAcquireFenceFd(int fenceFd) {
+        getLayer()->acquireFenceFd = fenceFd;
+    }
+
+    virtual void setDefaultState() {
+        getLayer()->compositionType = HWC_FRAMEBUFFER;
+        getLayer()->hints = 0;
+        getLayer()->flags = HWC_SKIP_LAYER;
+        getLayer()->transform = 0;
+        getLayer()->blending = HWC_BLENDING_NONE;
+        getLayer()->visibleRegionScreen.numRects = 0;
+        getLayer()->visibleRegionScreen.rects = NULL;
+        getLayer()->acquireFenceFd = -1;
+        getLayer()->releaseFenceFd = -1;
+    }
+    virtual void setSkip(bool skip) {
+        if (skip) {
+            getLayer()->flags |= HWC_SKIP_LAYER;
+        } else {
+            getLayer()->flags &= ~HWC_SKIP_LAYER;
+        }
+    }
+    virtual void setBlending(uint32_t blending) {
+        getLayer()->blending = blending;
+    }
+    virtual void setTransform(uint32_t transform) {
+        getLayer()->transform = transform;
+    }
+    virtual void setFrame(const Rect& frame) {
+        reinterpret_cast<Rect&>(getLayer()->displayFrame) = frame;
+    }
+    virtual void setCrop(const Rect& crop) {
+        reinterpret_cast<Rect&>(getLayer()->sourceCrop) = crop;
+    }
+    virtual void setVisibleRegionScreen(const Region& reg) {
+        getLayer()->visibleRegionScreen.rects =
+                reinterpret_cast<hwc_rect_t const *>(
+                        reg.getArray(&getLayer()->visibleRegionScreen.numRects));
+    }
+    virtual void setBuffer(const sp<GraphicBuffer>& buffer) {
+        if (buffer == 0 || buffer->handle == 0) {
+            getLayer()->compositionType = HWC_FRAMEBUFFER;
+            getLayer()->flags |= HWC_SKIP_LAYER;
+            getLayer()->handle = 0;
+        } else {
+            getLayer()->handle = buffer->handle;
+        }
+    }
+};
+
+/*
+ * returns an iterator initialized at a given index in the layer list
+ */
+HWComposer::LayerListIterator HWComposer::getLayerIterator(int32_t id, size_t index) {
+    if (uint32_t(id)>31 || !mAllocatedDisplayIDs.hasBit(id)) {
+        return LayerListIterator();
+    }
+    const DisplayData& disp(mDisplayData[id]);
+    if (!mHwc || !disp.list || index > disp.list->numHwLayers) {
+        return LayerListIterator();
+    }
+    return LayerListIterator(new HWCLayerVersion1(disp.list->hwLayers), index);
+}
+
+/*
+ * returns an iterator on the beginning of the layer list
+ */
+HWComposer::LayerListIterator HWComposer::begin(int32_t id) {
+    return getLayerIterator(id, 0);
+}
+
+/*
+ * returns an iterator on the end of the layer list
+ */
+HWComposer::LayerListIterator HWComposer::end(int32_t id) {
+    return getLayerIterator(id, getNumLayers(id));
 }
 
 void HWComposer::dump(String8& result, char* buffer, size_t SIZE,
         const Vector< sp<LayerBase> >& visibleLayersSortedByZ) const {
-    if (mHwc && mList) {
+    if (mHwc) {
         result.append("Hardware Composer state:\n");
-        result.appendFormat("  mDebugForceFakeVSync=%d\n",
-                mDebugForceFakeVSync);
-        result.appendFormat("  numHwLayers=%u, flags=%08x\n",
-                mList->numHwLayers, mList->flags);
-        result.append(
-                "   type   |  handle  |   hints  |   flags  | tr | blend |  format  |       source crop         |           frame           name \n"
-                "----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
-        //      " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
-        for (size_t i=0 ; i<mList->numHwLayers ; i++) {
-            const hwc_layer_t& l(mList->hwLayers[i]);
-            const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
-            int32_t format = -1;
-            if (layer->getLayer() != NULL) {
-                const sp<GraphicBuffer>& buffer(layer->getLayer()->getActiveBuffer());
-                if (buffer != NULL) {
-                    format = buffer->getPixelFormat();
+        result.appendFormat("  mDebugForceFakeVSync=%d\n", mDebugForceFakeVSync);
+        for (size_t i=0 ; i<mNumDisplays ; i++) {
+            const DisplayData& disp(mDisplayData[i]);
+            if (disp.list) {
+                result.appendFormat("  id=%d, numHwLayers=%u, flags=%08x\n",
+                        i, disp.list->numHwLayers, disp.list->flags);
+                result.append(
+                        "   type   |  handle  |   hints  |   flags  | tr | blend |  format  |       source crop         |           frame           name \n"
+                        "----------+----------+----------+----------+----+-------+----------+---------------------------+--------------------------------\n");
+                //      " ________ | ________ | ________ | ________ | __ | _____ | ________ | [_____,_____,_____,_____] | [_____,_____,_____,_____]
+                for (size_t i=0 ; i<disp.list->numHwLayers ; i++) {
+                    const hwc_layer_1_t&l = disp.list->hwLayers[i];
+                    const sp<LayerBase> layer(visibleLayersSortedByZ[i]);
+                    int32_t format = -1;
+                    if (layer->getLayer() != NULL) {
+                        const sp<GraphicBuffer>& buffer(
+                                layer->getLayer()->getActiveBuffer());
+                        if (buffer != NULL) {
+                            format = buffer->getPixelFormat();
+                        }
+                    }
+                    result.appendFormat(
+                            " %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
+                            l.compositionType ? "OVERLAY" : "FB",
+                                    intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format,
+                                    l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
+                                    l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
+                                    layer->getName().string());
                 }
             }
-            result.appendFormat(
-                    " %8s | %08x | %08x | %08x | %02x | %05x | %08x | [%5d,%5d,%5d,%5d] | [%5d,%5d,%5d,%5d] %s\n",
-                    l.compositionType ? "OVERLAY" : "FB",
-                    intptr_t(l.handle), l.hints, l.flags, l.transform, l.blending, format,
-                    l.sourceCrop.left, l.sourceCrop.top, l.sourceCrop.right, l.sourceCrop.bottom,
-                    l.displayFrame.left, l.displayFrame.top, l.displayFrame.right, l.displayFrame.bottom,
-                    layer->getName().string());
         }
     }
-    if (mHwc && mHwc->common.version >= HWC_DEVICE_API_VERSION_0_1 && mHwc->dump) {
+
+    if (mHwc && mHwc->dump) {
         mHwc->dump(mHwc, buffer, SIZE);
         result.append(buffer);
     }
@@ -276,7 +544,7 @@
 HWComposer::VSyncThread::VSyncThread(HWComposer& hwc)
     : mHwc(hwc), mEnabled(false),
       mNextFakeVSync(0),
-      mRefreshPeriod(hwc.mRefreshPeriod)
+      mRefreshPeriod(hwc.getRefreshPeriod())
 {
 }
 
diff --git a/services/surfaceflinger/DisplayHardware/HWComposer.h b/services/surfaceflinger/DisplayHardware/HWComposer.h
index aada3cd..7b92d2e 100644
--- a/services/surfaceflinger/DisplayHardware/HWComposer.h
+++ b/services/surfaceflinger/DisplayHardware/HWComposer.h
@@ -20,23 +20,33 @@
 #include <stdint.h>
 #include <sys/types.h>
 
-#include <EGL/egl.h>
+#include <hardware/hwcomposer_defs.h>
 
-#include <hardware/hwcomposer.h>
-
+#include <utils/Condition.h>
+#include <utils/Mutex.h>
 #include <utils/StrongPointer.h>
+#include <utils/Thread.h>
+#include <utils/Timers.h>
 #include <utils/Vector.h>
+#include <utils/BitSet.h>
 
 extern "C" int clock_nanosleep(clockid_t clock_id, int flags,
                            const struct timespec *request,
                            struct timespec *remain);
 
+struct hwc_composer_device_1;
+struct hwc_display_contents_1;
+struct hwc_procs;
+struct framebuffer_device_t;
+
 namespace android {
 // ---------------------------------------------------------------------------
 
+class GraphicBuffer;
+class LayerBase;
+class Region;
 class String8;
 class SurfaceFlinger;
-class LayerBase;
 
 class HWComposer
 {
@@ -48,37 +58,146 @@
         virtual ~EventHandler() {}
     };
 
-    HWComposer(const sp<SurfaceFlinger>& flinger,
-            EventHandler& handler, nsecs_t refreshPeriod);
+    enum {
+        MAX_DISPLAYS = HWC_NUM_DISPLAY_TYPES + 1
+    };
+
+    HWComposer(
+            const sp<SurfaceFlinger>& flinger,
+            EventHandler& handler,
+            framebuffer_device_t const* fbDev);
+
     ~HWComposer();
 
     status_t initCheck() const;
 
-    // tells the HAL what the framebuffer is
-    void setFrameBuffer(EGLDisplay dpy, EGLSurface sur);
+    // returns a display ID starting at MAX_DISPLAYS, this ID
+    // is to be used with createWorkList (and all other
+    // methods requiring an ID below).
+    // IDs below MAX_DISPLAY are pre-defined and therefore are always valid.
+    // returns a negative error code if an ID cannot be allocated
+    int32_t allocateDisplayId();
 
-    // create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
-    status_t createWorkList(size_t numLayers);
+    // recycles the given ID and frees the associated worklist.
+    // IDs below MAX_DISPLAYS are not recycled
+    status_t freeDisplayId(int32_t id);
+
 
     // Asks the HAL what it can do
-    status_t prepare() const;
-
-    // disable hwc until next createWorkList
-    status_t disable();
+    status_t prepare();
 
     // commits the list
-    status_t commit() const;
+    status_t commit();
 
-    // release hardware resources
+    // release hardware resources and blank screen
     status_t release() const;
 
-    // get the layer array created by createWorkList()
-    size_t getNumLayers() const;
-    hwc_layer_t* getLayers() const;
+    // acquire hardware resources and unblank screen
+    status_t acquire() const;
 
-    // get number of layers of the given type as updated in prepare().
-    // type is HWC_OVERLAY or HWC_FRAMEBUFFER
-    size_t getLayerCount(int type) const;
+    // create a work list for numLayers layer. sets HWC_GEOMETRY_CHANGED.
+    status_t createWorkList(int32_t id, size_t numLayers);
+
+    // does this display have layers handled by HWC
+    bool hasHwcComposition(int32_t id) const;
+
+    // does this display have layers handled by GLES
+    bool hasGlesComposition(int32_t id) const;
+
+    // needed forward declarations
+    class LayerListIterator;
+
+    /*
+     * Interface to hardware composer's layers functionality.
+     * This abstracts the HAL interface to layers which can evolve in
+     * incompatible ways from one release to another.
+     * The idea is that we could extend this interface as we add
+     * features to h/w composer.
+     */
+    class HWCLayerInterface {
+    protected:
+        virtual ~HWCLayerInterface() { }
+    public:
+        virtual int32_t getCompositionType() const = 0;
+        virtual uint32_t getHints() const = 0;
+        virtual int getAndResetReleaseFenceFd() = 0;
+        virtual void setDefaultState() = 0;
+        virtual void setSkip(bool skip) = 0;
+        virtual void setBlending(uint32_t blending) = 0;
+        virtual void setTransform(uint32_t transform) = 0;
+        virtual void setFrame(const Rect& frame) = 0;
+        virtual void setCrop(const Rect& crop) = 0;
+        virtual void setVisibleRegionScreen(const Region& reg) = 0;
+        virtual void setBuffer(const sp<GraphicBuffer>& buffer) = 0;
+        virtual void setAcquireFenceFd(int fenceFd) = 0;
+    };
+
+    /*
+     * Interface used to implement an iterator to a list
+     * of HWCLayer.
+     */
+    class HWCLayer : public HWCLayerInterface {
+        friend class LayerListIterator;
+        // select the layer at the given index
+        virtual status_t setLayer(size_t index) = 0;
+        virtual HWCLayer* dup() = 0;
+        static HWCLayer* copy(HWCLayer *rhs) {
+            return rhs ? rhs->dup() : NULL;
+        }
+    protected:
+        virtual ~HWCLayer() { }
+    };
+
+    /*
+     * Iterator through a HWCLayer list.
+     * This behaves more or less like a forward iterator.
+     */
+    class LayerListIterator {
+        friend struct HWComposer;
+        HWCLayer* const mLayerList;
+        size_t mIndex;
+
+        LayerListIterator() : mLayerList(NULL), mIndex(0) { }
+
+        LayerListIterator(HWCLayer* layer, size_t index)
+            : mLayerList(layer), mIndex(index) { }
+
+        // we don't allow assignment, because we don't need it for now
+        LayerListIterator& operator = (const LayerListIterator& rhs);
+
+    public:
+        // copy operators
+        LayerListIterator(const LayerListIterator& rhs)
+            : mLayerList(HWCLayer::copy(rhs.mLayerList)), mIndex(rhs.mIndex) {
+        }
+
+        ~LayerListIterator() { delete mLayerList; }
+
+        // pre-increment
+        LayerListIterator& operator++() {
+            mLayerList->setLayer(++mIndex);
+            return *this;
+        }
+
+        // dereference
+        HWCLayerInterface& operator * () { return *mLayerList; }
+        HWCLayerInterface* operator -> () { return mLayerList; }
+
+        // comparison
+        bool operator == (const LayerListIterator& rhs) const {
+            return mIndex == rhs.mIndex;
+        }
+        bool operator != (const LayerListIterator& rhs) const {
+            return !operator==(rhs);
+        }
+    };
+
+    // Returns an iterator to the beginning of the layer list
+    LayerListIterator begin(int32_t id);
+
+    // Returns an iterator to the end of the layer list
+    LayerListIterator end(int32_t id);
+
 
     // Events handling ---------------------------------------------------------
 
@@ -88,6 +207,11 @@
 
     void eventControl(int event, int enabled);
 
+    nsecs_t getRefreshPeriod() const;
+    nsecs_t getRefreshTimestamp() const;
+    float getDpiX() const;
+    float getDpiY() const;
+
     // this class is only used to fake the VSync event on systems that don't
     // have it.
     class VSyncThread : public Thread {
@@ -112,41 +236,55 @@
 
 private:
 
-    struct callbacks : public hwc_procs_t {
-        // these are here to facilitate the transition when adding
-        // new callbacks (an implementation can check for NULL before
-        // calling a new callback).
-        void (*zero[4])(void);
-    };
+    LayerListIterator getLayerIterator(int32_t id, size_t index);
+    size_t getNumLayers(int32_t id) const;
 
-    struct cb_context {
-        callbacks procs;
-        HWComposer* hwc;
-    };
+    struct cb_context;
 
-    static void hook_invalidate(struct hwc_procs* procs);
-    static void hook_vsync(struct hwc_procs* procs, int dpy, int64_t timestamp);
+    static void hook_invalidate(const struct hwc_procs* procs);
+    static void hook_vsync(const struct hwc_procs* procs, int dpy,
+            int64_t timestamp);
 
     inline void invalidate();
     inline void vsync(int dpy, int64_t timestamp);
 
-    sp<SurfaceFlinger>      mFlinger;
-    hw_module_t const*      mModule;
-    hwc_composer_device_t*  mHwc;
-    hwc_layer_list_t*       mList;
-    size_t                  mCapacity;
-    mutable size_t          mNumOVLayers;
-    mutable size_t          mNumFBLayers;
-    hwc_display_t           mDpy;
-    hwc_surface_t           mSur;
-    cb_context              mCBContext;
-    EventHandler&           mEventHandler;
-    nsecs_t                 mRefreshPeriod;
-    size_t                  mVSyncCount;
-    sp<VSyncThread>         mVSyncThread;
-    bool                    mDebugForceFakeVSync;
-};
 
+    struct DisplayData {
+        DisplayData() : xdpi(0), ydpi(0), refresh(0),
+            hasFbComp(false), hasOvComp(false),
+            capacity(0), list(NULL) { }
+        ~DisplayData() {
+            free(list);
+        }
+        float xdpi;
+        float ydpi;
+        nsecs_t refresh;
+        bool hasFbComp;
+        bool hasOvComp;
+        size_t capacity;
+        hwc_display_contents_1* list;
+    };
+
+    sp<SurfaceFlinger>              mFlinger;
+    hw_module_t const*              mModule;
+    struct hwc_composer_device_1*   mHwc;
+    // invariant: mLists[0] != NULL iff mHwc != NULL
+    // mLists[i>0] can be NULL. that display is to be ignored
+    struct hwc_display_contents_1*  mLists[MAX_DISPLAYS];
+    DisplayData                     mDisplayData[MAX_DISPLAYS];
+    size_t                          mNumDisplays;
+
+    cb_context*                     mCBContext;
+    EventHandler&                   mEventHandler;
+    size_t                          mVSyncCount;
+    sp<VSyncThread>                 mVSyncThread;
+    bool                            mDebugForceFakeVSync;
+    BitSet32                        mAllocatedDisplayIDs;
+
+    // protected by mLock
+    mutable Mutex mLock;
+    mutable nsecs_t mLastHwVSync;
+};
 
 // ---------------------------------------------------------------------------
 }; // namespace android
diff --git a/services/surfaceflinger/EventThread.cpp b/services/surfaceflinger/EventThread.cpp
index 7c1aebe..a39b7d8 100644
--- a/services/surfaceflinger/EventThread.cpp
+++ b/services/surfaceflinger/EventThread.cpp
@@ -19,36 +19,32 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <cutils/compiler.h>
+
 #include <gui/BitTube.h>
 #include <gui/IDisplayEventConnection.h>
 #include <gui/DisplayEventReceiver.h>
 
 #include <utils/Errors.h>
+#include <utils/String8.h>
 #include <utils/Trace.h>
 
-#include "DisplayHardware/DisplayHardware.h"
 #include "EventThread.h"
 #include "SurfaceFlinger.h"
 
 // ---------------------------------------------------------------------------
-
 namespace android {
-
 // ---------------------------------------------------------------------------
 
 EventThread::EventThread(const sp<SurfaceFlinger>& flinger)
     : mFlinger(flinger),
-      mHw(flinger->graphicPlane(0).editDisplayHardware()),
-      mLastVSyncTimestamp(0),
       mVSyncTimestamp(0),
       mUseSoftwareVSync(false),
-      mDeliveredEvents(0),
-      mDebugVsyncEnabled(false)
-{
+      mVSyncCount(0),
+      mDebugVsyncEnabled(false) {
 }
 
 void EventThread::onFirstRef() {
-    mHw.setVSyncHandler(this);
     run("EventThread", PRIORITY_URGENT_DISPLAY + PRIORITY_MORE_FAVORABLE);
 }
 
@@ -64,14 +60,6 @@
     return NO_ERROR;
 }
 
-status_t EventThread::unregisterDisplayEventConnection(
-        const wp<EventThread::Connection>& connection) {
-    Mutex::Autolock _l(mLock);
-    mDisplayEventConnections.remove(connection);
-    mCondition.broadcast();
-    return NO_ERROR;
-}
-
 void EventThread::removeDisplayEventConnection(
         const wp<EventThread::Connection>& connection) {
     Mutex::Autolock _l(mLock);
@@ -121,146 +109,134 @@
 void EventThread::onVSyncReceived(int, nsecs_t timestamp) {
     Mutex::Autolock _l(mLock);
     mVSyncTimestamp = timestamp;
+    mVSyncCount++;
     mCondition.broadcast();
 }
 
 bool EventThread::threadLoop() {
-
-    nsecs_t timestamp;
     DisplayEventReceiver::Event vsync;
-    Vector< wp<EventThread::Connection> > displayEventConnections;
+    Vector< sp<EventThread::Connection> > signalConnections;
+    signalConnections = waitForEvent(&vsync);
+
+    // dispatch vsync events to listeners...
+    const size_t count = signalConnections.size();
+    for (size_t i=0 ; i<count ; i++) {
+        const sp<Connection>& conn(signalConnections[i]);
+        // now see if we still need to report this VSYNC event
+        status_t err = conn->postEvent(vsync);
+        if (err == -EAGAIN || err == -EWOULDBLOCK) {
+            // The destination doesn't accept events anymore, it's probably
+            // full. For now, we just drop the events on the floor.
+            // Note that some events cannot be dropped and would have to be
+            // re-sent later. Right-now we don't have the ability to do
+            // this, but it doesn't matter for VSYNC.
+        } else if (err < 0) {
+            // handle any other error on the pipe as fatal. the only
+            // reasonable thing to do is to clean-up this connection.
+            // The most common error we'll get here is -EPIPE.
+            removeDisplayEventConnection(signalConnections[i]);
+        }
+    }
+    return true;
+}
+
+Vector< sp<EventThread::Connection> > EventThread::waitForEvent(
+        DisplayEventReceiver::Event* event)
+{
+    Mutex::Autolock _l(mLock);
+
+    size_t vsyncCount;
+    nsecs_t timestamp;
+    Vector< sp<EventThread::Connection> > signalConnections;
 
     do {
-        Mutex::Autolock _l(mLock);
-        do {
-            // latch VSYNC event if any
-            timestamp = mVSyncTimestamp;
-            mVSyncTimestamp = 0;
+        // latch VSYNC event if any
+        bool waitForVSync = false;
+        vsyncCount = mVSyncCount;
+        timestamp = mVSyncTimestamp;
+        mVSyncTimestamp = 0;
 
-            // check if we should be waiting for VSYNC events
-            bool waitForNextVsync = false;
-            size_t count = mDisplayEventConnections.size();
-            for (size_t i=0 ; i<count ; i++) {
-                sp<Connection> connection =
-                        mDisplayEventConnections.itemAt(i).promote();
-                if (connection!=0 && connection->count >= 0) {
-                    // at least one continuous mode or active one-shot event
-                    waitForNextVsync = true;
-                    break;
-                }
-            }
-
-            if (timestamp) {
-                if (!waitForNextVsync) {
-                    // we received a VSYNC but we have no clients
-                    // don't report it, and disable VSYNC events
-                    disableVSyncLocked();
-                } else {
-                    // report VSYNC event
-                    break;
+        // find out connections waiting for events
+        size_t count = mDisplayEventConnections.size();
+        for (size_t i=0 ; i<count ; i++) {
+            sp<Connection> connection(mDisplayEventConnections[i].promote());
+            if (connection != NULL) {
+                if (connection->count >= 0) {
+                    // we need vsync events because at least
+                    // one connection is waiting for it
+                    waitForVSync = true;
+                    if (timestamp) {
+                        // we consume the event only if it's time
+                        // (ie: we received a vsync event)
+                        if (connection->count == 0) {
+                            // fired this time around
+                            connection->count = -1;
+                            signalConnections.add(connection);
+                        } else if (connection->count == 1 ||
+                                (vsyncCount % connection->count) == 0) {
+                            // continuous event, and time to report it
+                            signalConnections.add(connection);
+                        }
+                    }
                 }
             } else {
-                // never disable VSYNC events immediately, instead
-                // we'll wait to receive the event and we'll
-                // reevaluate whether we need to dispatch it and/or
-                // disable VSYNC events then.
-                if (waitForNextVsync) {
-                    // enable
-                    enableVSyncLocked();
-                }
+                // we couldn't promote this reference, the connection has
+                // died, so clean-up!
+                mDisplayEventConnections.removeAt(i);
+                --i; --count;
             }
+        }
 
+        // Here we figure out if we need to enable or disable vsyncs
+        if (timestamp && !waitForVSync) {
+            // we received a VSYNC but we have no clients
+            // don't report it, and disable VSYNC events
+            disableVSyncLocked();
+        } else if (!timestamp && waitForVSync) {
+            enableVSyncLocked();
+        }
+
+        // note: !timestamp implies signalConnections.isEmpty()
+        if (!timestamp) {
             // wait for something to happen
-            if (mUseSoftwareVSync && waitForNextVsync) {
+            if (CC_UNLIKELY(mUseSoftwareVSync && waitForVSync)) {
                 // h/w vsync cannot be used (screen is off), so we use
                 // a  timeout instead. it doesn't matter how imprecise this
                 // is, we just need to make sure to serve the clients
                 if (mCondition.waitRelative(mLock, ms2ns(16)) == TIMED_OUT) {
                     mVSyncTimestamp = systemTime(SYSTEM_TIME_MONOTONIC);
+                    mVSyncCount++;
                 }
             } else {
+                // This is where we spend most of our time, waiting
+                // for a vsync events and registered clients
                 mCondition.wait(mLock);
             }
-        } while(true);
-
-        // process vsync event
-        mDeliveredEvents++;
-        mLastVSyncTimestamp = timestamp;
-
-        // now see if we still need to report this VSYNC event
-        const size_t count = mDisplayEventConnections.size();
-        for (size_t i=0 ; i<count ; i++) {
-            bool reportVsync = false;
-            sp<Connection> connection =
-                    mDisplayEventConnections.itemAt(i).promote();
-            if (connection == 0)
-                continue;
-
-            const int32_t count = connection->count;
-            if (count >= 1) {
-                if (count==1 || (mDeliveredEvents % count) == 0) {
-                    // continuous event, and time to report it
-                    reportVsync = true;
-                }
-            } else if (count >= -1) {
-                if (count == 0) {
-                    // fired this time around
-                    reportVsync = true;
-                }
-                connection->count--;
-            }
-            if (reportVsync) {
-                displayEventConnections.add(connection);
-            }
         }
-    } while (!displayEventConnections.size());
+    } while (signalConnections.isEmpty());
+
+    // here we're guaranteed to have a timestamp and some connections to signal
 
     // dispatch vsync events to listeners...
-    vsync.header.type = DisplayEventReceiver::DISPLAY_EVENT_VSYNC;
-    vsync.header.timestamp = timestamp;
-    vsync.vsync.count = mDeliveredEvents;
+    event->header.type = DisplayEventReceiver::DISPLAY_EVENT_VSYNC;
+    event->header.timestamp = timestamp;
+    event->vsync.count = vsyncCount;
 
-    const size_t count = displayEventConnections.size();
-    for (size_t i=0 ; i<count ; i++) {
-        sp<Connection> conn(displayEventConnections[i].promote());
-        // make sure the connection didn't die
-        if (conn != NULL) {
-            status_t err = conn->postEvent(vsync);
-            if (err == -EAGAIN || err == -EWOULDBLOCK) {
-                // The destination doesn't accept events anymore, it's probably
-                // full. For now, we just drop the events on the floor.
-                // Note that some events cannot be dropped and would have to be
-                // re-sent later. Right-now we don't have the ability to do
-                // this, but it doesn't matter for VSYNC.
-            } else if (err < 0) {
-                // handle any other error on the pipe as fatal. the only
-                // reasonable thing to do is to clean-up this connection.
-                // The most common error we'll get here is -EPIPE.
-                removeDisplayEventConnection(displayEventConnections[i]);
-            }
-        } else {
-            // somehow the connection is dead, but we still have it in our list
-            // just clean the list.
-            removeDisplayEventConnection(displayEventConnections[i]);
-        }
-    }
-
-    // clear all our references without holding mLock
-    displayEventConnections.clear();
-
-    return true;
+    return signalConnections;
 }
 
 void EventThread::enableVSyncLocked() {
     if (!mUseSoftwareVSync) {
         // never enable h/w VSYNC when screen is off
-        mHw.eventControl(DisplayHardware::EVENT_VSYNC, true);
+        mFlinger->eventControl(SurfaceFlinger::EVENT_VSYNC, true);
+        mPowerHAL.vsyncHint(true);
     }
     mDebugVsyncEnabled = true;
 }
 
 void EventThread::disableVSyncLocked() {
-    mHw.eventControl(DisplayHardware::EVENT_VSYNC, false);
+    mFlinger->eventControl(SurfaceFlinger::EVENT_VSYNC, false);
+    mPowerHAL.vsyncHint(false);
     mDebugVsyncEnabled = false;
 }
 
@@ -276,7 +252,7 @@
     result.appendFormat("  soft-vsync: %s\n",
             mUseSoftwareVSync?"enabled":"disabled");
     result.appendFormat("  numListeners=%u,\n  events-delivered: %u\n",
-            mDisplayEventConnections.size(), mDeliveredEvents);
+            mDisplayEventConnections.size(), mVSyncCount);
     for (size_t i=0 ; i<mDisplayEventConnections.size() ; i++) {
         sp<Connection> connection =
                 mDisplayEventConnections.itemAt(i).promote();
@@ -294,7 +270,8 @@
 }
 
 EventThread::Connection::~Connection() {
-    mEventThread->unregisterDisplayEventConnection(this);
+    // do nothing here -- clean-up will happen automatically
+    // when the main thread wakes up
 }
 
 void EventThread::Connection::onFirstRef() {
diff --git a/services/surfaceflinger/EventThread.h b/services/surfaceflinger/EventThread.h
index b42cab6..20ea34d 100644
--- a/services/surfaceflinger/EventThread.h
+++ b/services/surfaceflinger/EventThread.h
@@ -27,19 +27,18 @@
 #include <utils/threads.h>
 #include <utils/SortedVector.h>
 
-#include "DisplayHardware/DisplayHardware.h"
+#include "DisplayHardware/PowerHAL.h"
 
 // ---------------------------------------------------------------------------
-
 namespace android {
-
 // ---------------------------------------------------------------------------
 
 class SurfaceFlinger;
+class String8;
 
 // ---------------------------------------------------------------------------
 
-class EventThread : public Thread, public DisplayHardware::VSyncHandler {
+class EventThread : public Thread {
     class Connection : public BnDisplayEventConnection {
     public:
         Connection(const sp<EventThread>& eventThread);
@@ -48,7 +47,6 @@
         // count >= 1 : continuous event. count is the vsync rate
         // count == 0 : one-shot event that has not fired
         // count ==-1 : one-shot event that fired this round / disabled
-        // count ==-2 : one-shot event that fired the round before
         int32_t count;
 
     private:
@@ -67,7 +65,6 @@
 
     sp<Connection> createEventConnection() const;
     status_t registerDisplayEventConnection(const sp<Connection>& connection);
-    status_t unregisterDisplayEventConnection(const wp<Connection>& connection);
 
     void setVsyncRate(uint32_t count, const sp<Connection>& connection);
     void requestNextVsync(const sp<Connection>& connection);
@@ -78,13 +75,18 @@
     // called after the screen is turned on from main thread
     void onScreenAcquired();
 
+    // called when receiving a vsync event
+    void onVSyncReceived(int display, nsecs_t timestamp);
+
+    Vector< sp<EventThread::Connection> > waitForEvent(
+            DisplayEventReceiver::Event* event);
+
     void dump(String8& result, char* buffer, size_t SIZE) const;
 
 private:
     virtual bool        threadLoop();
     virtual status_t    readyToRun();
     virtual void        onFirstRef();
-    virtual void        onVSyncReceived(int, nsecs_t timestamp);
 
     void removeDisplayEventConnection(const wp<Connection>& connection);
     void enableVSyncLocked();
@@ -92,19 +94,16 @@
 
     // constants
     sp<SurfaceFlinger> mFlinger;
-    DisplayHardware& mHw;
+    PowerHAL mPowerHAL;
 
     mutable Mutex mLock;
     mutable Condition mCondition;
 
     // protected by mLock
     SortedVector< wp<Connection> > mDisplayEventConnections;
-    nsecs_t mLastVSyncTimestamp;
     nsecs_t mVSyncTimestamp;
     bool mUseSoftwareVSync;
-
-    // main thread only
-    size_t mDeliveredEvents;
+    size_t mVSyncCount;
 
     // for debugging
     bool mDebugVsyncEnabled;
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 4062340..0825ec6 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -36,13 +36,14 @@
 #include <gui/Surface.h>
 
 #include "clz.h"
-#include "DisplayHardware/DisplayHardware.h"
-#include "DisplayHardware/HWComposer.h"
+#include "DisplayDevice.h"
 #include "GLExtensions.h"
 #include "Layer.h"
 #include "SurfaceFlinger.h"
 #include "SurfaceTextureLayer.h"
 
+#include "DisplayHardware/HWComposer.h"
+
 #define DEBUG_RESIZE    0
 
 namespace android {
@@ -63,7 +64,6 @@
         mFormat(PIXEL_FORMAT_NONE),
         mGLExtensions(GLExtensions::getInstance()),
         mOpaqueLayer(true),
-        mNeedsDithering(false),
         mSecure(false),
         mProtectedByApp(false)
 {
@@ -71,14 +71,10 @@
     glGenTextures(1, &mTextureName);
 }
 
-void Layer::onLayerDisplayed() {
-    if (mFrameLatencyNeeded) {
-        const DisplayHardware& hw(graphicPlane(0).displayHardware());
-        mFrameStats[mFrameLatencyOffset].timestamp = mSurfaceTexture->getTimestamp();
-        mFrameStats[mFrameLatencyOffset].set = systemTime();
-        mFrameStats[mFrameLatencyOffset].vsync = hw.getRefreshTimestamp();
-        mFrameLatencyOffset = (mFrameLatencyOffset + 1) % 128;
-        mFrameLatencyNeeded = false;
+void Layer::onLayerDisplayed(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface* layer) {
+    if (layer) {
+        mSurfaceTexture->setReleaseFence(layer->getAndResetReleaseFenceFd());
     }
 }
 
@@ -117,8 +113,7 @@
 
 Layer::~Layer()
 {
-    mFlinger->postMessageAsync(
-            new SurfaceFlinger::MessageDestroyGLTexture(mTextureName) );
+    mFlinger->deleteTextureAsync(mTextureName);
 }
 
 void Layer::onFrameQueued() {
@@ -138,14 +133,6 @@
     mSurfaceTexture->setName(name);
 }
 
-void Layer::validateVisibility(const Transform& globalTransform) {
-    LayerBase::validateVisibility(globalTransform);
-
-    // This optimization allows the SurfaceTexture to bake in
-    // the rotation so hardware overlays can be used
-    mSurfaceTexture->setTransformHint(getTransformHint());
-}
-
 sp<ISurface> Layer::createSurface()
 {
     class BSurface : public BnSurface, public LayerCleaner {
@@ -183,10 +170,8 @@
         return err;
     }
 
-    // the display's pixel format
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
     uint32_t const maxSurfaceDims = min(
-            hw.getMaxTextureSize(), hw.getMaxViewportDims());
+            mFlinger->getMaxTextureSize(), mFlinger->getMaxViewportDims());
 
     // never allow a surface larger than what our underlying GL implementation
     // can handle.
@@ -195,26 +180,17 @@
         return BAD_VALUE;
     }
 
-    PixelFormatInfo displayInfo;
-    getPixelFormatInfo(hw.getFormat(), &displayInfo);
-    const uint32_t hwFlags = hw.getFlags();
-    
     mFormat = format;
 
-    mSecure = (flags & ISurfaceComposer::eSecure) ? true : false;
-    mProtectedByApp = (flags & ISurfaceComposer::eProtectedByApp) ? true : false;
-    mOpaqueLayer = (flags & ISurfaceComposer::eOpaque);
+    mSecure = (flags & ISurfaceComposerClient::eSecure) ? true : false;
+    mProtectedByApp = (flags & ISurfaceComposerClient::eProtectedByApp) ? true : false;
+    mOpaqueLayer = (flags & ISurfaceComposerClient::eOpaque);
     mCurrentOpacity = getOpacityForFormat(format);
 
     mSurfaceTexture->setDefaultBufferSize(w, h);
     mSurfaceTexture->setDefaultBufferFormat(format);
     mSurfaceTexture->setConsumerUsageBits(getEffectiveUsage(0));
 
-    // we use the red index
-    int displayRedSize = displayInfo.getSize(PixelFormatInfo::INDEX_RED);
-    int layerRedsize = info.getSize(PixelFormatInfo::INDEX_RED);
-    mNeedsDithering = layerRedsize > displayRedSize;
-
     return NO_ERROR;
 }
 
@@ -226,7 +202,8 @@
     } else  if (mActiveBuffer != NULL){
         crop = Rect(mActiveBuffer->getWidth(), mActiveBuffer->getHeight());
     } else {
-        crop = Rect(mTransformedBounds.width(), mTransformedBounds.height());
+        crop.makeInvalid();
+        return crop;
     }
 
     // ... then reduce that in the same proportions as the window crop reduces
@@ -259,16 +236,19 @@
     return crop;
 }
 
-void Layer::setGeometry(hwc_layer_t* hwcl)
+void Layer::setGeometry(
+    const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer)
 {
-    LayerBaseClient::setGeometry(hwcl);
+    LayerBaseClient::setGeometry(hw, layer);
 
-    hwcl->flags &= ~HWC_SKIP_LAYER;
+    // enable this layer
+    layer.setSkip(false);
 
     // we can't do alpha-fade with the hwc HAL
     const State& s(drawingState());
     if (s.alpha < 0xFF) {
-        hwcl->flags = HWC_SKIP_LAYER;
+        layer.setSkip(true);
     }
 
     /*
@@ -276,44 +256,52 @@
      * 1) buffer orientation/flip/mirror
      * 2) state transformation (window manager)
      * 3) layer orientation (screen orientation)
-     * mTransform is already the composition of (2) and (3)
      * (NOTE: the matrices are multiplied in reverse order)
      */
 
     const Transform bufferOrientation(mCurrentTransform);
-    const Transform tr(mTransform * bufferOrientation);
+    const Transform tr(hw->getTransform() * s.transform * bufferOrientation);
 
     // this gives us only the "orientation" component of the transform
     const uint32_t finalTransform = tr.getOrientation();
 
     // we can only handle simple transformation
     if (finalTransform & Transform::ROT_INVALID) {
-        hwcl->flags = HWC_SKIP_LAYER;
+        layer.setSkip(true);
     } else {
-        hwcl->transform = finalTransform;
+        layer.setTransform(finalTransform);
     }
-
-    Rect crop = computeBufferCrop();
-    hwcl->sourceCrop.left   = crop.left;
-    hwcl->sourceCrop.top    = crop.top;
-    hwcl->sourceCrop.right  = crop.right;
-    hwcl->sourceCrop.bottom = crop.bottom;
+    layer.setCrop(computeBufferCrop());
 }
 
-void Layer::setPerFrameData(hwc_layer_t* hwcl) {
+void Layer::setPerFrameData(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer) {
     const sp<GraphicBuffer>& buffer(mActiveBuffer);
-    if (buffer == NULL) {
-        // this can happen if the client never drew into this layer yet,
-        // or if we ran out of memory. In that case, don't let
-        // HWC handle it.
-        hwcl->flags |= HWC_SKIP_LAYER;
-        hwcl->handle = NULL;
-    } else {
-        hwcl->handle = buffer->handle;
-    }
+    // NOTE: buffer can be NULL if the client never drew into this
+    // layer yet, or if we ran out of memory
+    layer.setBuffer(buffer);
 }
 
-void Layer::onDraw(const Region& clip) const
+void Layer::setAcquireFence(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer) {
+    int fenceFd = -1;
+
+    // TODO: there is a possible optimization here: we only need to set the
+    // acquire fence the first time a new buffer is acquired on EACH display.
+
+    if (layer.getCompositionType() == HWC_OVERLAY) {
+        sp<Fence> fence = mSurfaceTexture->getCurrentFence();
+        if (fence.get()) {
+            fenceFd = fence->dup();
+            if (fenceFd == -1) {
+                ALOGW("failed to dup layer fence, skipping sync: %d", errno);
+            }
+        }
+    }
+    layer.setAcquireFenceFd(fenceFd);
+}
+
+void Layer::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
     ATRACE_CALL();
 
@@ -335,16 +323,25 @@
             const sp<LayerBase>& layer(drawingLayers[i]);
             if (layer.get() == static_cast<LayerBase const*>(this))
                 break;
-            under.orSelf(layer->visibleRegionScreen);
+            under.orSelf( hw->getTransform().transform(layer->visibleRegion) );
         }
         // if not everything below us is covered, we plug the holes!
         Region holes(clip.subtract(under));
         if (!holes.isEmpty()) {
-            clearWithOpenGL(holes, 0, 0, 0, 1);
+            clearWithOpenGL(hw, holes, 0, 0, 0, 1);
         }
         return;
     }
 
+    // TODO: replace this with a server-side wait
+    sp<Fence> fence = mSurfaceTexture->getCurrentFence();
+    if (fence.get()) {
+        status_t err = fence->wait(Fence::TIMEOUT_NEVER);
+        ALOGW_IF(err != OK, "Layer::onDraw: failed waiting for fence: %d", err);
+        // Go ahead and draw the buffer anyway; no matter what we do the screen
+        // is probably going to have something visibly wrong.
+    }
+
     if (!isProtected()) {
         // TODO: we could be more subtle with isFixedSize()
         const bool useFiltering = getFiltering() || needsFiltering() || isFixedSize();
@@ -376,7 +373,7 @@
         glEnable(GL_TEXTURE_2D);
     }
 
-    drawWithOpenGL(clip);
+    drawWithOpenGL(hw, clip);
 
     glDisable(GL_TEXTURE_EXTERNAL_OES);
     glDisable(GL_TEXTURE_2D);
@@ -514,10 +511,23 @@
     return mQueuedFrames > 0;
 }
 
-void Layer::lockPageFlip(bool& recomputeVisibleRegions)
+void Layer::onPostComposition() {
+    if (mFrameLatencyNeeded) {
+        const HWComposer& hwc = mFlinger->getHwComposer();
+        const size_t offset = mFrameLatencyOffset;
+        mFrameStats[offset].timestamp = mSurfaceTexture->getTimestamp();
+        mFrameStats[offset].set = systemTime();
+        mFrameStats[offset].vsync = hwc.getRefreshTimestamp();
+        mFrameLatencyOffset = (mFrameLatencyOffset + 1) % 128;
+        mFrameLatencyNeeded = false;
+    }
+}
+
+Region Layer::latchBuffer(bool& recomputeVisibleRegions)
 {
     ATRACE_CALL();
 
+    Region outDirtyRegion;
     if (mQueuedFrames > 0) {
 
         // if we've already called updateTexImage() without going through
@@ -526,8 +536,7 @@
         // compositionComplete() call.
         // we'll trigger an update in onPreComposition().
         if (mRefreshPending) {
-            mPostedDirtyRegion.clear();
-            return;
+            return outDirtyRegion;
         }
 
         // Capture the old state of the layer for comparisons later
@@ -624,17 +633,21 @@
 
         Reject r(mDrawingState, currentState(), recomputeVisibleRegions);
 
+        // XXX: not sure if setTransformHint belongs here
+        // it should only be needed when the main screen orientation changes
+        mSurfaceTexture->setTransformHint(getTransformHint());
+
         if (mSurfaceTexture->updateTexImage(&r) < NO_ERROR) {
             // something happened!
             recomputeVisibleRegions = true;
-            return;
+            return outDirtyRegion;
         }
 
         // update the active buffer
         mActiveBuffer = mSurfaceTexture->getCurrentBuffer();
         if (mActiveBuffer == NULL) {
             // this can only happen if the very first buffer was rejected.
-            return;
+            return outDirtyRegion;
         }
 
         mRefreshPending = true;
@@ -672,38 +685,17 @@
             recomputeVisibleRegions = true;
         }
 
-        // FIXME: mPostedDirtyRegion = dirty & bounds
-        const Layer::State& front(drawingState());
-        mPostedDirtyRegion.set(front.active.w, front.active.h);
-
         glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
         glTexParameterx(GL_TEXTURE_EXTERNAL_OES, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+
+        // FIXME: postedRegion should be dirty & bounds
+        const Layer::State& front(drawingState());
+        Region dirtyRegion(Rect(front.active.w, front.active.h));
+
+        // transform the dirty region to window-manager space
+        outDirtyRegion = (front.transform.transform(dirtyRegion));
     }
-}
-
-void Layer::unlockPageFlip(
-        const Transform& planeTransform, Region& outDirtyRegion)
-{
-    ATRACE_CALL();
-
-    Region postedRegion(mPostedDirtyRegion);
-    if (!postedRegion.isEmpty()) {
-        mPostedDirtyRegion.clear();
-        if (!visibleRegionScreen.isEmpty()) {
-            // The dirty region is given in the layer's coordinate space
-            // transform the dirty region by the surface's transformation
-            // and the global transformation.
-            const Layer::State& s(drawingState());
-            const Transform tr(planeTransform * s.transform);
-            postedRegion = tr.transform(postedRegion);
-
-            // At this point, the dirty region is in screen space.
-            // Make sure it's constrained by the visible region (which
-            // is in screen space as well).
-            postedRegion.andSelf(visibleRegionScreen);
-            outDirtyRegion.orSelf(postedRegion);
-        }
-    }
+    return outDirtyRegion;
 }
 
 void Layer::dump(String8& result, char* buffer, size_t SIZE) const
@@ -736,8 +728,7 @@
 {
     LayerBaseClient::dumpStats(result, buffer, SIZE);
     const size_t o = mFrameLatencyOffset;
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const nsecs_t period = hw.getRefreshPeriod();
+    const nsecs_t period = mFlinger->getHwComposer().getRefreshPeriod();
     result.appendFormat("%lld\n", period);
     for (size_t i=0 ; i<128 ; i++) {
         const size_t index = (o+i) % 128;
@@ -772,7 +763,14 @@
 uint32_t Layer::getTransformHint() const {
     uint32_t orientation = 0;
     if (!mFlinger->mDebugDisableTransformHint) {
-        orientation = getPlaneOrientation();
+        // The transform hint is used to improve performance on the main
+        // display -- we can only have a single transform hint, it cannot
+        // apply to all displays.
+        // This is why we use the default display here. This is not an
+        // oversight.
+        sp<const DisplayDevice> hw(mFlinger->getDefaultDisplayDevice());
+        const Transform& planeTransform(hw->getTransform());
+        orientation = planeTransform.getOrientation();
         if (orientation & Transform::ROT_INVALID) {
             orientation = 0;
         }
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 393599f..d24013b 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -64,27 +64,30 @@
     bool isFixedSize() const;
 
     // LayerBase interface
-    virtual void setGeometry(hwc_layer_t* hwcl);
-    virtual void setPerFrameData(hwc_layer_t* hwcl);
-    virtual void onDraw(const Region& clip) const;
+    virtual void setGeometry(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
+    virtual void setPerFrameData(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
+    virtual void setAcquireFence(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
+    virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface* layer);
+    virtual bool onPreComposition();
+    virtual void onPostComposition();
+
+    virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
     virtual uint32_t doTransaction(uint32_t transactionFlags);
-    virtual void lockPageFlip(bool& recomputeVisibleRegions);
-    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
+    virtual Region latchBuffer(bool& recomputeVisibleRegions);
     virtual bool isOpaque() const;
-    virtual bool needsDithering() const     { return mNeedsDithering; }
     virtual bool isSecure() const           { return mSecure; }
     virtual bool isProtected() const;
     virtual void onRemoved();
     virtual sp<Layer> getLayer() const { return const_cast<Layer*>(this); }
     virtual void setName(const String8& name);
-    virtual void validateVisibility(const Transform& globalTransform);
 
     // LayerBaseClient interface
     virtual wp<IBinder> getSurfaceTextureBinder() const;
 
-    virtual void onLayerDisplayed();
-    virtual bool onPreComposition();
-
     // only for debugging
     inline const sp<GraphicBuffer>& getActiveBuffer() const { return mActiveBuffer; }
 
@@ -137,12 +140,10 @@
     PixelFormat mFormat;
     const GLExtensions& mGLExtensions;
     bool mOpaqueLayer;
-    bool mNeedsDithering;
 
     // page-flip thread (currently main thread)
     bool mSecure;         // no screenshots
     bool mProtectedByApp; // application requires protected path to external sink
-    Region mPostedDirtyRegion;
 };
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/LayerBase.cpp b/services/surfaceflinger/LayerBase.cpp
index 16bac8f..2311e6d 100644
--- a/services/surfaceflinger/LayerBase.cpp
+++ b/services/surfaceflinger/LayerBase.cpp
@@ -29,9 +29,11 @@
 #include <hardware/hardware.h>
 
 #include "clz.h"
+#include "Client.h"
 #include "LayerBase.h"
+#include "Layer.h"
 #include "SurfaceFlinger.h"
-#include "DisplayHardware/DisplayHardware.h"
+#include "DisplayDevice.h"
 
 namespace android {
 
@@ -44,13 +46,9 @@
       sequence(uint32_t(android_atomic_inc(&sSequence))),
       mFlinger(flinger), mFiltering(false),
       mNeedsFiltering(false),
-      mOrientation(0),
-      mPlaneOrientation(0),
       mTransactionFlags(0),
       mPremultipliedAlpha(true), mName("unnamed"), mDebug(false)
 {
-    const DisplayHardware& hw(flinger->graphicPlane(0).displayHardware());
-    mFlags = hw.getFlags();
 }
 
 LayerBase::~LayerBase()
@@ -65,23 +63,13 @@
     return mName;
 }
 
-const GraphicPlane& LayerBase::graphicPlane(int dpy) const
-{ 
-    return mFlinger->graphicPlane(dpy);
-}
-
-GraphicPlane& LayerBase::graphicPlane(int dpy)
-{
-    return mFlinger->graphicPlane(dpy); 
-}
-
 void LayerBase::initStates(uint32_t w, uint32_t h, uint32_t flags)
 {
     uint32_t layerFlags = 0;
-    if (flags & ISurfaceComposer::eHidden)
-        layerFlags = ISurfaceComposer::eLayerHidden;
+    if (flags & ISurfaceComposerClient::eHidden)
+        layerFlags = layer_state_t::eLayerHidden;
 
-    if (flags & ISurfaceComposer::eNonPremultiplied)
+    if (flags & ISurfaceComposerClient::eNonPremultiplied)
         mPremultipliedAlpha = false;
 
     mCurrentState.active.w = w;
@@ -89,6 +77,7 @@
     mCurrentState.active.crop.makeInvalid();
     mCurrentState.z = 0;
     mCurrentState.alpha = 0xFF;
+    mCurrentState.layerStack = 0;
     mCurrentState.flags = layerFlags;
     mCurrentState.sequence = 0;
     mCurrentState.transform.set(0, 0);
@@ -181,19 +170,23 @@
     return true;
 }
 
-Rect LayerBase::visibleBounds() const
-{
-    return mTransformedBounds;
-}      
+bool LayerBase::setLayerStack(uint32_t layerStack) {
+    if (mCurrentState.layerStack == layerStack)
+        return false;
+    mCurrentState.sequence++;
+    mCurrentState.layerStack = layerStack;
+    requestTransaction();
+    return true;
+}
 
 void LayerBase::setVisibleRegion(const Region& visibleRegion) {
     // always called from main thread
-    visibleRegionScreen = visibleRegion;
+    this->visibleRegion = visibleRegion;
 }
 
 void LayerBase::setCoveredRegion(const Region& coveredRegion) {
     // always called from main thread
-    coveredRegionScreen = coveredRegion;
+    this->coveredRegion = coveredRegion;
 }
 
 uint32_t LayerBase::doTransaction(uint32_t flags)
@@ -230,99 +223,82 @@
     return flags;
 }
 
-void LayerBase::validateVisibility(const Transform& planeTransform)
+void LayerBase::computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const
 {
     const Layer::State& s(drawingState());
-    const Transform tr(planeTransform * s.transform);
-    const bool transformed = tr.transformed();
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t hw_h = hw.getHeight();
+    const Transform tr(hw->getTransform() * s.transform);
+    const uint32_t hw_h = hw->getHeight();
     const Rect& crop(s.active.crop);
-
     Rect win(s.active.w, s.active.h);
     if (!crop.isEmpty()) {
         win.intersect(crop, &win);
     }
-
-    mNumVertices = 4;
-    tr.transform(mVertices[0], win.left,  win.top);
-    tr.transform(mVertices[1], win.left,  win.bottom);
-    tr.transform(mVertices[2], win.right, win.bottom);
-    tr.transform(mVertices[3], win.right, win.top);
-    for (size_t i=0 ; i<4 ; i++)
-        mVertices[i][1] = hw_h - mVertices[i][1];
-
-    if (CC_UNLIKELY(transformed)) {
-        // NOTE: here we could also punt if we have too many rectangles
-        // in the transparent region
-        if (tr.preserveRects()) {
-            // transform the transparent region
-            transparentRegionScreen = tr.transform(s.transparentRegion);
-        } else {
-            // transformation too complex, can't do the transparent region
-            // optimization.
-            transparentRegionScreen.clear();
+    if (mesh) {
+        tr.transform(mesh->mVertices[0], win.left,  win.top);
+        tr.transform(mesh->mVertices[1], win.left,  win.bottom);
+        tr.transform(mesh->mVertices[2], win.right, win.bottom);
+        tr.transform(mesh->mVertices[3], win.right, win.top);
+        for (size_t i=0 ; i<4 ; i++) {
+            mesh->mVertices[i][1] = hw_h - mesh->mVertices[i][1];
         }
-    } else {
-        transparentRegionScreen = s.transparentRegion;
     }
-
-    // cache a few things...
-    mOrientation = tr.getOrientation();
-    mPlaneOrientation = planeTransform.getOrientation();
-    mTransform = tr;
-    mTransformedBounds = tr.transform(win);
 }
 
-void LayerBase::lockPageFlip(bool& recomputeVisibleRegions) {
+Rect LayerBase::computeBounds() const {
+    const Layer::State& s(drawingState());
+    const Rect& crop(s.active.crop);
+    Rect win(s.active.w, s.active.h);
+    if (!crop.isEmpty()) {
+        win.intersect(crop, &win);
+    }
+    return s.transform.transform(win);
 }
 
-void LayerBase::unlockPageFlip(
-        const Transform& planeTransform, Region& outDirtyRegion) {
+Region LayerBase::latchBuffer(bool& recomputeVisibleRegions) {
+    Region result;
+    return result;
 }
 
-void LayerBase::setGeometry(hwc_layer_t* hwcl)
+void LayerBase::setGeometry(
+    const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer)
 {
-    hwcl->compositionType = HWC_FRAMEBUFFER;
-    hwcl->hints = 0;
-    hwcl->flags = HWC_SKIP_LAYER;
-    hwcl->transform = 0;
-    hwcl->blending = HWC_BLENDING_NONE;
+    layer.setDefaultState();
 
     // this gives us only the "orientation" component of the transform
     const State& s(drawingState());
     const uint32_t finalTransform = s.transform.getOrientation();
     // we can only handle simple transformation
     if (finalTransform & Transform::ROT_INVALID) {
-        hwcl->flags = HWC_SKIP_LAYER;
+        layer.setTransform(0);
     } else {
-        hwcl->transform = finalTransform;
+        layer.setTransform(finalTransform);
     }
 
     if (!isOpaque()) {
-        hwcl->blending = mPremultipliedAlpha ?
-                HWC_BLENDING_PREMULT : HWC_BLENDING_COVERAGE;
+        layer.setBlending(mPremultipliedAlpha ?
+                HWC_BLENDING_PREMULT :
+                HWC_BLENDING_COVERAGE);
     }
 
-    // scaling is already applied in mTransformedBounds
-    hwcl->displayFrame.left   = mTransformedBounds.left;
-    hwcl->displayFrame.top    = mTransformedBounds.top;
-    hwcl->displayFrame.right  = mTransformedBounds.right;
-    hwcl->displayFrame.bottom = mTransformedBounds.bottom;
-    hwcl->visibleRegionScreen.rects =
-            reinterpret_cast<hwc_rect_t const *>(
-                    visibleRegionScreen.getArray(
-                            &hwcl->visibleRegionScreen.numRects));
+    const Transform& tr = hw->getTransform();
+    Rect transformedBounds(computeBounds());
+    transformedBounds = tr.transform(transformedBounds);
 
-    hwcl->sourceCrop.left   = 0;
-    hwcl->sourceCrop.top    = 0;
-    hwcl->sourceCrop.right  = mTransformedBounds.width();
-    hwcl->sourceCrop.bottom = mTransformedBounds.height();
+    // scaling is already applied in transformedBounds
+    layer.setFrame(transformedBounds);
+    layer.setCrop(transformedBounds.getBounds());
+    layer.setVisibleRegionScreen(tr.transform(visibleRegion));
 }
 
-void LayerBase::setPerFrameData(hwc_layer_t* hwcl) {
-    hwcl->compositionType = HWC_FRAMEBUFFER;
-    hwcl->handle = NULL;
+void LayerBase::setPerFrameData(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer) {
+    layer.setBuffer(0);
+}
+
+void LayerBase::setAcquireFence(const sp<const DisplayDevice>& hw,
+        HWComposer::HWCLayerInterface& layer) {
+    layer.setAcquireFenceFd(-1);
 }
 
 void LayerBase::setFiltering(bool filtering)
@@ -335,44 +311,41 @@
     return mFiltering;
 }
 
-void LayerBase::draw(const Region& clip) const
+void LayerBase::draw(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
-    onDraw(clip);
+    onDraw(hw, clip);
 }
 
-void LayerBase::drawForSreenShot()
+void LayerBase::draw(const sp<const DisplayDevice>& hw)
 {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    setFiltering(true);
-    onDraw( Region(hw.bounds()) );
-    setFiltering(false);
+    onDraw( hw, Region(hw->bounds()) );
 }
 
-void LayerBase::clearWithOpenGL(const Region& clip, GLclampf red,
-                                GLclampf green, GLclampf blue,
-                                GLclampf alpha) const
+void LayerBase::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip,
+        GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha) const
 {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t fbHeight = hw.getHeight();
+    const uint32_t fbHeight = hw->getHeight();
     glColor4f(red,green,blue,alpha);
 
     glDisable(GL_TEXTURE_EXTERNAL_OES);
     glDisable(GL_TEXTURE_2D);
     glDisable(GL_BLEND);
 
-    glVertexPointer(2, GL_FLOAT, 0, mVertices);
-    glDrawArrays(GL_TRIANGLE_FAN, 0, mNumVertices);
+    LayerMesh mesh;
+    computeGeometry(hw, &mesh);
+
+    glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
+    glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
 }
 
-void LayerBase::clearWithOpenGL(const Region& clip) const
+void LayerBase::clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
-    clearWithOpenGL(clip,0,0,0,0);
+    clearWithOpenGL(hw, clip, 0,0,0,0);
 }
 
-void LayerBase::drawWithOpenGL(const Region& clip) const
+void LayerBase::drawWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t fbHeight = hw.getHeight();
+    const uint32_t fbHeight = hw->getHeight();
     const State& s(drawingState());
 
     GLenum src = mPremultipliedAlpha ? GL_ONE : GL_SRC_ALPHA;
@@ -397,6 +370,12 @@
         }
     }
 
+    LayerMesh mesh;
+    computeGeometry(hw, &mesh);
+
+    // TODO: we probably want to generate the texture coords with the mesh
+    // here we assume that we only have 4 vertices
+
     struct TexCoords {
         GLfloat u;
         GLfloat v;
@@ -406,9 +385,9 @@
     if (!s.active.crop.isEmpty()) {
         crop = s.active.crop;
     }
-    GLfloat left = GLfloat(crop.left) / GLfloat(s.active.w);
-    GLfloat top = GLfloat(crop.top) / GLfloat(s.active.h);
-    GLfloat right = GLfloat(crop.right) / GLfloat(s.active.w);
+    GLfloat left   = GLfloat(crop.left)   / GLfloat(s.active.w);
+    GLfloat top    = GLfloat(crop.top)    / GLfloat(s.active.h);
+    GLfloat right  = GLfloat(crop.right)  / GLfloat(s.active.w);
     GLfloat bottom = GLfloat(crop.bottom) / GLfloat(s.active.h);
 
     TexCoords texCoords[4];
@@ -425,9 +404,9 @@
     }
 
     glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    glVertexPointer(2, GL_FLOAT, 0, mVertices);
     glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
-    glDrawArrays(GL_TRIANGLE_FAN, 0, mNumVertices);
+    glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
+    glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
 
     glDisableClientState(GL_TEXTURE_COORD_ARRAY);
     glDisable(GL_BLEND);
@@ -443,15 +422,14 @@
     result.append(buffer);
 
     s.transparentRegion.dump(result, "transparentRegion");
-    transparentRegionScreen.dump(result, "transparentRegionScreen");
-    visibleRegionScreen.dump(result, "visibleRegionScreen");
+    visibleRegion.dump(result, "visibleRegion");
 
     snprintf(buffer, SIZE,
             "      "
-            "z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), "
+            "layerStack=%4d, z=%9d, pos=(%g,%g), size=(%4d,%4d), crop=(%4d,%4d,%4d,%4d), "
             "isOpaque=%1d, needsDithering=%1d, invalidate=%1d, "
             "alpha=0x%02x, flags=0x%08x, tr=[%.2f, %.2f][%.2f, %.2f]\n",
-            s.z, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h,
+            s.z, s.layerStack, s.transform.tx(), s.transform.ty(), s.active.w, s.active.h,
             s.active.crop.left, s.active.crop.top,
             s.active.crop.right, s.active.crop.bottom,
             isOpaque(), needsDithering(), contentDirty,
@@ -471,6 +449,14 @@
 void LayerBase::clearStats() {
 }
 
+sp<LayerBaseClient> LayerBase::getLayerBaseClient() const {
+    return 0;
+}
+
+sp<Layer> LayerBase::getLayer() const {
+    return 0;
+}
+
 // ---------------------------------------------------------------------------
 
 int32_t LayerBaseClient::sIdentity = 1;
@@ -554,7 +540,7 @@
 
 LayerBaseClient::LayerCleaner::~LayerCleaner() {
     // destroy client resources
-    mFlinger->destroySurface(mLayer);
+    mFlinger->onLayerDestroyed(mLayer);
 }
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/LayerBase.h b/services/surfaceflinger/LayerBase.h
index c547a40..6394542 100644
--- a/services/surfaceflinger/LayerBase.h
+++ b/services/surfaceflinger/LayerBase.h
@@ -25,6 +25,7 @@
 #include <GLES/gl.h>
 
 #include <utils/RefBase.h>
+#include <utils/String8.h>
 
 #include <ui/Region.h>
 
@@ -32,19 +33,16 @@
 
 #include <private/gui/LayerState.h>
 
-#include <hardware/hwcomposer.h>
-
-#include "DisplayHardware/DisplayHardware.h"
 #include "Transform.h"
+#include "DisplayHardware/HWComposer.h"
 
 namespace android {
 
 // ---------------------------------------------------------------------------
 
 class Client;
-class DisplayHardware;
+class DisplayDevice;
 class GraphicBuffer;
-class GraphicPlane;
 class Layer;
 class LayerBaseClient;
 class SurfaceFlinger;
@@ -60,9 +58,9 @@
 
     DisplayID           dpy;
     mutable bool        contentDirty;
-            Region      visibleRegionScreen;
-            Region      transparentRegionScreen;
-            Region      coveredRegionScreen;
+            // regions below are in window-manager space
+            Region      visibleRegion;
+            Region      coveredRegion;
             int32_t     sequence;
             
             struct Geometry {
@@ -81,6 +79,7 @@
                 Geometry        active;
                 Geometry        requested;
                 uint32_t        z;
+                uint32_t        layerStack;
                 uint8_t         alpha;
                 uint8_t         flags;
                 uint8_t         reserved[2];
@@ -89,6 +88,20 @@
                 Region          transparentRegion;
             };
 
+            class LayerMesh {
+                friend class LayerBase;
+                GLfloat mVertices[4][2];
+                size_t mNumVertices;
+            public:
+                LayerMesh() : mNumVertices(4) { }
+                GLfloat const* getVertices() const {
+                    return &mVertices[0][0];
+                }
+                size_t getVertexCount() const {
+                    return mNumVertices;
+                }
+            };
+
     virtual void setName(const String8& name);
             String8 getName() const;
 
@@ -101,24 +114,30 @@
             bool setTransparentRegionHint(const Region& opaque);
             bool setFlags(uint8_t flags, uint8_t mask);
             bool setCrop(const Rect& crop);
-            
+            bool setLayerStack(uint32_t layerStack);
+
             void commitTransaction();
             bool requestTransaction();
             void forceVisibilityTransaction();
             
             uint32_t getTransactionFlags(uint32_t flags);
             uint32_t setTransactionFlags(uint32_t flags);
-            
-            Rect visibleBounds() const;
 
-    virtual sp<LayerBaseClient> getLayerBaseClient() const { return 0; }
-    virtual sp<Layer> getLayer() const { return 0; }
+            void computeGeometry(const sp<const DisplayDevice>& hw, LayerMesh* mesh) const;
+            Rect computeBounds() const;
+
+
+    virtual sp<LayerBaseClient> getLayerBaseClient() const;
+    virtual sp<Layer> getLayer() const;
 
     virtual const char* getTypeId() const { return "LayerBase"; }
 
-    virtual void setGeometry(hwc_layer_t* hwcl);
-    virtual void setPerFrameData(hwc_layer_t* hwcl);
-
+    virtual void setGeometry(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
+    virtual void setPerFrameData(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
+    virtual void setAcquireFence(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface& layer);
 
     /**
      * draw - performs some global clipping optimizations
@@ -126,13 +145,13 @@
      * Typically this method is not overridden, instead implement onDraw()
      * to perform the actual drawing.  
      */
-    virtual void draw(const Region& clip) const;
-    virtual void drawForSreenShot();
+    virtual void draw(const sp<const DisplayDevice>& hw, const Region& clip) const;
+    virtual void draw(const sp<const DisplayDevice>& hw);
     
     /**
      * onDraw - draws the surface.
      */
-    virtual void onDraw(const Region& clip) const = 0;
+    virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const = 0;
     
     /**
      * initStates - called just after construction
@@ -159,26 +178,13 @@
     virtual void setCoveredRegion(const Region& coveredRegion);
 
     /**
-     * validateVisibility - cache a bunch of things
-     */
-    virtual void validateVisibility(const Transform& globalTransform);
-
-    /**
-     * lockPageFlip - called each time the screen is redrawn and returns whether
+     * latchBuffer - called each time the screen is redrawn and returns whether
      * the visible regions need to be recomputed (this is a fairly heavy
      * operation, so this should be set only if needed). Typically this is used
      * to figure out if the content or size of a surface has changed.
      */
-    virtual void lockPageFlip(bool& recomputeVisibleRegions);
-    
-    /**
-     * unlockPageFlip - called each time the screen is redrawn. updates the
-     * final dirty region wrt the planeTransform.
-     * At this point, all visible regions, surface position and size, etc... are
-     * correct.
-     */
-    virtual void unlockPageFlip(const Transform& planeTransform, Region& outDirtyRegion);
-    
+    virtual Region latchBuffer(bool& recomputeVisibleRegions);
+
     /**
      * isOpaque - true if this surface is opaque
      */
@@ -212,13 +218,18 @@
 
     /** called after page-flip
      */
-    virtual void onLayerDisplayed() { }
+    virtual void onLayerDisplayed(const sp<const DisplayDevice>& hw,
+            HWComposer::HWCLayerInterface* layer) { }
 
     /** called before composition.
      * returns true if the layer has pending updates.
      */
     virtual bool onPreComposition() { return false; }
 
+    /** called before composition.
+     */
+    virtual void onPostComposition() { }
+
     /** always call base class first */
     virtual void dump(String8& result, char* scratch, size_t size) const;
     virtual void shortDump(String8& result, char* scratch, size_t size) const;
@@ -236,43 +247,27 @@
     inline  const State&    currentState() const    { return mCurrentState; }
     inline  State&          currentState()          { return mCurrentState; }
 
-    int32_t  getOrientation() const { return mOrientation; }
-    int32_t  getPlaneOrientation() const { return mPlaneOrientation; }
+    void clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const;
 
-    void clearWithOpenGL(const Region& clip) const;
+    void setFiltering(bool filtering);
+    bool getFiltering() const;
 
 protected:
-    const GraphicPlane& graphicPlane(int dpy) const;
-          GraphicPlane& graphicPlane(int dpy);
-
-          void clearWithOpenGL(const Region& clip, GLclampf r, GLclampf g,
-                               GLclampf b, GLclampf alpha) const;
-          void drawWithOpenGL(const Region& clip) const;
-
-          void setFiltering(bool filtering);
-          bool getFiltering() const;
+          void clearWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip,
+                  GLclampf r, GLclampf g, GLclampf b, GLclampf alpha) const;
+          void drawWithOpenGL(const sp<const DisplayDevice>& hw, const Region& clip) const;
 
                 sp<SurfaceFlinger> mFlinger;
-                uint32_t        mFlags;
 
 private:
                 // accessed only in the main thread
                 // Whether filtering is forced on or not
                 bool            mFiltering;
 
-                // cached during validateVisibility()
                 // Whether filtering is needed b/c of the drawingstate
                 bool            mNeedsFiltering;
 
 protected:
-                // cached during validateVisibility()
-                int32_t         mOrientation;
-                int32_t         mPlaneOrientation;
-                Transform       mTransform;
-                GLfloat         mVertices[4][2];
-                size_t          mNumVertices;
-                Rect            mTransformedBounds;
-            
                 // these are protected by an external lock
                 State           mCurrentState;
                 State           mDrawingState;
diff --git a/services/surfaceflinger/LayerDim.cpp b/services/surfaceflinger/LayerDim.cpp
index 96a310f..087d851 100644
--- a/services/surfaceflinger/LayerDim.cpp
+++ b/services/surfaceflinger/LayerDim.cpp
@@ -18,6 +18,9 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
 #include <utils/Errors.h>
 #include <utils/Log.h>
 
@@ -25,7 +28,7 @@
 
 #include "LayerDim.h"
 #include "SurfaceFlinger.h"
-#include "DisplayHardware/DisplayHardware.h"
+#include "DisplayDevice.h"
 
 namespace android {
 // ---------------------------------------------------------------------------
@@ -40,13 +43,12 @@
 {
 }
 
-void LayerDim::onDraw(const Region& clip) const
+void LayerDim::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
     const State& s(drawingState());
     if (s.alpha>0) {
-        const DisplayHardware& hw(graphicPlane(0).displayHardware());
         const GLfloat alpha = s.alpha/255.0f;
-        const uint32_t fbHeight = hw.getHeight();
+        const uint32_t fbHeight = hw->getHeight();
         glDisable(GL_TEXTURE_EXTERNAL_OES);
         glDisable(GL_TEXTURE_2D);
 
@@ -59,8 +61,11 @@
 
         glColor4f(0, 0, 0, alpha);
 
-        glVertexPointer(2, GL_FLOAT, 0, mVertices);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+        LayerMesh mesh;
+        computeGeometry(hw, &mesh);
+
+        glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
+        glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
 
         glDisable(GL_BLEND);
         glDisableClientState(GL_TEXTURE_COORD_ARRAY);
diff --git a/services/surfaceflinger/LayerDim.h b/services/surfaceflinger/LayerDim.h
index 8770e6d..fbfb2fb 100644
--- a/services/surfaceflinger/LayerDim.h
+++ b/services/surfaceflinger/LayerDim.h
@@ -36,7 +36,7 @@
                         const sp<Client>& client);
         virtual ~LayerDim();
 
-    virtual void onDraw(const Region& clip) const;
+    virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
     virtual bool isOpaque() const         { return false; }
     virtual bool isSecure() const         { return false; }
     virtual bool isProtectedByApp() const { return false; }
diff --git a/services/surfaceflinger/LayerScreenshot.cpp b/services/surfaceflinger/LayerScreenshot.cpp
index b42353c..799ecdc 100644
--- a/services/surfaceflinger/LayerScreenshot.cpp
+++ b/services/surfaceflinger/LayerScreenshot.cpp
@@ -18,6 +18,9 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <GLES/gl.h>
+#include <GLES/glext.h>
+
 #include <utils/Errors.h>
 #include <utils/Log.h>
 
@@ -25,7 +28,7 @@
 
 #include "LayerScreenshot.h"
 #include "SurfaceFlinger.h"
-#include "DisplayHardware/DisplayHardware.h"
+#include "DisplayDevice.h"
 
 
 namespace android {
@@ -41,8 +44,7 @@
 LayerScreenshot::~LayerScreenshot()
 {
     if (mTextureName) {
-        mFlinger->postMessageAsync(
-                new SurfaceFlinger::MessageDestroyGLTexture(mTextureName) );
+        mFlinger->deleteTextureAsync(mTextureName);
     }
 }
 
@@ -78,25 +80,25 @@
 
 void LayerScreenshot::initStates(uint32_t w, uint32_t h, uint32_t flags) {
     LayerBaseClient::initStates(w, h, flags);
-    if (!(flags & ISurfaceComposer::eHidden)) {
+    if (!(flags & ISurfaceComposerClient::eHidden)) {
         capture();
     }
 }
 
 uint32_t LayerScreenshot::doTransaction(uint32_t flags)
 {
-    const Layer::State& draw(drawingState());
-    const Layer::State& curr(currentState());
+    const LayerBase::State& draw(drawingState());
+    const LayerBase::State& curr(currentState());
 
-    if (draw.flags & ISurfaceComposer::eLayerHidden) {
-        if (!(curr.flags & ISurfaceComposer::eLayerHidden)) {
+    if (draw.flags & layer_state_t::eLayerHidden) {
+        if (!(curr.flags & layer_state_t::eLayerHidden)) {
             // we're going from hidden to visible
             status_t err = captureLocked();
             if (err != NO_ERROR) {
                 ALOGW("createScreenshotSurface failed (%s)", strerror(-err));
             }
         }
-    } else if (curr.flags & ISurfaceComposer::eLayerHidden) {
+    } else if (curr.flags & layer_state_t::eLayerHidden) {
         // we're going from visible to hidden
         if (mTextureName) {
             glDeleteTextures(1, &mTextureName);
@@ -106,13 +108,12 @@
     return LayerBaseClient::doTransaction(flags);
 }
 
-void LayerScreenshot::onDraw(const Region& clip) const
+void LayerScreenshot::onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const
 {
     const State& s(drawingState());
     if (s.alpha>0) {
-        const DisplayHardware& hw(graphicPlane(0).displayHardware());
         const GLfloat alpha = s.alpha/255.0f;
-        const uint32_t fbHeight = hw.getHeight();
+        const uint32_t fbHeight = hw->getHeight();
 
         if (s.alpha == 0xFF) {
             glDisable(GL_BLEND);
@@ -121,6 +122,9 @@
             glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
         }
 
+        LayerMesh mesh;
+        computeGeometry(hw, &mesh);
+
         glColor4f(0, 0, 0, alpha);
 
         glDisable(GL_TEXTURE_EXTERNAL_OES);
@@ -134,8 +138,8 @@
 
         glEnableClientState(GL_TEXTURE_COORD_ARRAY);
         glTexCoordPointer(2, GL_FLOAT, 0, mTexCoords);
-        glVertexPointer(2, GL_FLOAT, 0, mVertices);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, mNumVertices);
+        glVertexPointer(2, GL_FLOAT, 0, mesh.getVertices());
+        glDrawArrays(GL_TRIANGLE_FAN, 0, mesh.getVertexCount());
 
         glDisable(GL_BLEND);
         glDisable(GL_TEXTURE_2D);
diff --git a/services/surfaceflinger/LayerScreenshot.h b/services/surfaceflinger/LayerScreenshot.h
index ab90047..c06c23c 100644
--- a/services/surfaceflinger/LayerScreenshot.h
+++ b/services/surfaceflinger/LayerScreenshot.h
@@ -43,7 +43,7 @@
 
     virtual void initStates(uint32_t w, uint32_t h, uint32_t flags);
     virtual uint32_t doTransaction(uint32_t flags);
-    virtual void onDraw(const Region& clip) const;
+    virtual void onDraw(const sp<const DisplayDevice>& hw, const Region& clip) const;
     virtual bool isOpaque() const         { return false; }
     virtual bool isSecure() const         { return false; }
     virtual bool isProtectedByApp() const { return false; }
diff --git a/services/surfaceflinger/MessageQueue.cpp b/services/surfaceflinger/MessageQueue.cpp
index 290fff4..3f77f74 100644
--- a/services/surfaceflinger/MessageQueue.cpp
+++ b/services/surfaceflinger/MessageQueue.cpp
@@ -49,13 +49,13 @@
 
 // ---------------------------------------------------------------------------
 
-void MessageQueue::Handler::signalRefresh() {
+void MessageQueue::Handler::dispatchRefresh() {
     if ((android_atomic_or(eventMaskRefresh, &mEventMask) & eventMaskRefresh) == 0) {
         mQueue.mLooper->sendMessage(this, Message(MessageQueue::REFRESH));
     }
 }
 
-void MessageQueue::Handler::signalInvalidate() {
+void MessageQueue::Handler::dispatchInvalidate() {
     if ((android_atomic_or(eventMaskInvalidate, &mEventMask) & eventMaskInvalidate) == 0) {
         mQueue.mLooper->sendMessage(this, Message(MessageQueue::INVALIDATE));
     }
@@ -132,13 +132,31 @@
     return NO_ERROR;
 }
 
+/* when INVALIDATE_ON_VSYNC is set SF only processes
+ * buffer updates on VSYNC and performs a refresh immediately
+ * after.
+ *
+ * when INVALIDATE_ON_VSYNC is set to false, SF will instead
+ * perform the buffer updates immediately, but the refresh only
+ * at the next VSYNC.
+ * THIS MODE IS BUGGY ON GALAXY NEXUS AND WILL CAUSE HANGS
+ */
+#define INVALIDATE_ON_VSYNC 1
+
 void MessageQueue::invalidate() {
-//    mHandler->signalInvalidate();
+#if INVALIDATE_ON_VSYNC
     mEvents->requestNextVsync();
+#else
+    mHandler->dispatchInvalidate();
+#endif
 }
 
 void MessageQueue::refresh() {
+#if INVALIDATE_ON_VSYNC
+    mHandler->dispatchRefresh();
+#else
     mEvents->requestNextVsync();
+#endif
 }
 
 int MessageQueue::cb_eventReceiver(int fd, int events, void* data) {
@@ -152,7 +170,11 @@
     while ((n = DisplayEventReceiver::getEvents(mEventTube, buffer, 8)) > 0) {
         for (int i=0 ; i<n ; i++) {
             if (buffer[i].header.type == DisplayEventReceiver::DISPLAY_EVENT_VSYNC) {
-                mHandler->signalRefresh();
+#if INVALIDATE_ON_VSYNC
+                mHandler->dispatchInvalidate();
+#else
+                mHandler->dispatchRefresh();
+#endif
                 break;
             }
         }
diff --git a/services/surfaceflinger/MessageQueue.h b/services/surfaceflinger/MessageQueue.h
index ea29e7e..710b2c2 100644
--- a/services/surfaceflinger/MessageQueue.h
+++ b/services/surfaceflinger/MessageQueue.h
@@ -70,8 +70,8 @@
     public:
         Handler(MessageQueue& queue) : mQueue(queue), mEventMask(0) { }
         virtual void handleMessage(const Message& message);
-        void signalRefresh();
-        void signalInvalidate();
+        void dispatchRefresh();
+        void dispatchInvalidate();
     };
 
     friend class Handler;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 51fcce4..ed687e3 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -16,17 +16,13 @@
 
 #define ATRACE_TAG ATRACE_TAG_GRAPHICS
 
-#include <stdlib.h>
-#include <stdio.h>
 #include <stdint.h>
-#include <unistd.h>
-#include <fcntl.h>
+#include <sys/types.h>
 #include <errno.h>
 #include <math.h>
-#include <limits.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/ioctl.h>
+
+#include <EGL/egl.h>
+#include <GLES/gl.h>
 
 #include <cutils/log.h>
 #include <cutils/properties.h>
@@ -36,20 +32,27 @@
 #include <binder/MemoryHeapBase.h>
 #include <binder/PermissionCache.h>
 
+#include <ui/DisplayInfo.h>
+
+#include <gui/BitTube.h>
+#include <gui/BufferQueue.h>
 #include <gui/IDisplayEventConnection.h>
+#include <gui/SurfaceTextureClient.h>
+
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/PixelFormat.h>
 
 #include <utils/String8.h>
 #include <utils/String16.h>
 #include <utils/StopWatch.h>
 #include <utils/Trace.h>
 
-#include <ui/GraphicBufferAllocator.h>
-#include <ui/PixelFormat.h>
-
-#include <GLES/gl.h>
+#include <private/android_filesystem_config.h>
 
 #include "clz.h"
 #include "DdmConnection.h"
+#include "DisplayDevice.h"
+#include "Client.h"
 #include "EventThread.h"
 #include "GLExtensions.h"
 #include "Layer.h"
@@ -57,12 +60,9 @@
 #include "LayerScreenshot.h"
 #include "SurfaceFlinger.h"
 
-#include "DisplayHardware/DisplayHardware.h"
+#include "DisplayHardware/FramebufferSurface.h"
 #include "DisplayHardware/HWComposer.h"
 
-#include <private/android_filesystem_config.h>
-#include <private/gui/SharedBufferStack.h>
-#include <gui/BitTube.h>
 
 #define EGL_VERSION_HW_ANDROID  0x3143
 
@@ -83,10 +83,10 @@
         mTransactionFlags(0),
         mTransationPending(false),
         mLayersRemoved(false),
+        mRepaintEverything(0),
         mBootTime(systemTime()),
         mVisibleRegionsDirty(false),
         mHwWorkListDirty(false),
-        mElectronBeamAnimationMode(0),
         mDebugRegion(0),
         mDebugDDMS(0),
         mDebugDisableHWC(0),
@@ -95,13 +95,7 @@
         mLastSwapBufferTime(0),
         mDebugInTransaction(0),
         mLastTransactionTime(0),
-        mBootFinished(false),
-        mSecureFrameBuffer(0)
-{
-    init();
-}
-
-void SurfaceFlinger::init()
+        mBootFinished(false)
 {
     ALOGI("SurfaceFlinger is starting");
 
@@ -111,16 +105,14 @@
     property_get("debug.sf.showupdates", value, "0");
     mDebugRegion = atoi(value);
 
-#ifdef DDMS_DEBUGGING
     property_get("debug.sf.ddms", value, "0");
     mDebugDDMS = atoi(value);
     if (mDebugDDMS) {
         DdmConnection::start(getServiceName());
     }
-#endif
 
-    ALOGI_IF(mDebugRegion,       "showupdates enabled");
-    ALOGI_IF(mDebugDDMS,         "DDMS debugging enabled");
+    ALOGI_IF(mDebugRegion, "showupdates enabled");
+    ALOGI_IF(mDebugDDMS, "DDMS debugging enabled");
 }
 
 void SurfaceFlinger::onFirstRef()
@@ -136,26 +128,22 @@
 
 SurfaceFlinger::~SurfaceFlinger()
 {
-    glDeleteTextures(1, &mWormholeTexName);
+    EGLDisplay display = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    eglMakeCurrent(display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT);
+    eglTerminate(display);
 }
 
 void SurfaceFlinger::binderDied(const wp<IBinder>& who)
 {
     // the window manager died on us. prepare its eulogy.
 
-    // reset screen orientation
-    Vector<ComposerState> state;
-    setTransactionState(state, eOrientationDefault, 0);
+    // restore initial conditions (default device unblank, etc)
+    initializeDisplays();
 
     // restart the boot-animation
     startBootAnim();
 }
 
-sp<IMemoryHeap> SurfaceFlinger::getCblk() const
-{
-    return mServerHeap;
-}
-
 sp<ISurfaceComposerClient> SurfaceFlinger::createConnection()
 {
     sp<ISurfaceComposerClient> bclient;
@@ -167,25 +155,64 @@
     return bclient;
 }
 
+int32_t SurfaceFlinger::chooseNewDisplayIdLocked() const
+{
+    int32_t id = DisplayDevice::DISPLAY_ID_COUNT - 1;
+    bool available;
+    do {
+        id++;
+        available = true;
+        for (size_t i = 0; i < mCurrentState.displays.size(); i++) {
+            const DisplayDeviceState& dds(mCurrentState.displays.valueAt(i));
+            if (dds.id == id) {
+                available = false;
+                break;
+            }
+        }
+    } while (!available);
+    return id;
+}
+
+sp<IBinder> SurfaceFlinger::createDisplay()
+{
+    class DisplayToken : public BBinder {
+        sp<SurfaceFlinger> flinger;
+        virtual ~DisplayToken() {
+             // no more references, this display must be terminated
+             Mutex::Autolock _l(flinger->mStateLock);
+             flinger->mCurrentState.displays.removeItem(this);
+             flinger->setTransactionFlags(eDisplayTransactionNeeded);
+         }
+     public:
+        DisplayToken(const sp<SurfaceFlinger>& flinger)
+            : flinger(flinger) {
+        }
+    };
+
+    sp<BBinder> token = new DisplayToken(this);
+
+    Mutex::Autolock _l(mStateLock);
+    int32_t id = chooseNewDisplayIdLocked();
+    DisplayDeviceState info(id);
+    mCurrentState.displays.add(token, info);
+
+    return token;
+}
+
+sp<IBinder> SurfaceFlinger::getBuiltInDisplay(int32_t id) {
+    if (uint32_t(id) >= DisplayDevice::DISPLAY_ID_COUNT) {
+        ALOGE("getDefaultDisplay: id=%d is not a valid default display id", id);
+        return NULL;
+    }
+    return mDefaultDisplays[id];
+}
+
 sp<IGraphicBufferAlloc> SurfaceFlinger::createGraphicBufferAlloc()
 {
     sp<GraphicBufferAlloc> gba(new GraphicBufferAlloc());
     return gba;
 }
 
-const GraphicPlane& SurfaceFlinger::graphicPlane(int dpy) const
-{
-    ALOGE_IF(uint32_t(dpy) >= DISPLAY_COUNT, "Invalid DisplayID %d", dpy);
-    const GraphicPlane& plane(mGraphicPlanes[dpy]);
-    return plane;
-}
-
-GraphicPlane& SurfaceFlinger::graphicPlane(int dpy)
-{
-    return const_cast<GraphicPlane&>(
-        const_cast<SurfaceFlinger const *>(this)->graphicPlane(dpy));
-}
-
 void SurfaceFlinger::bootFinished()
 {
     const nsecs_t now = systemTime();
@@ -197,7 +224,7 @@
     const String16 name("window");
     sp<IBinder> window(defaultServiceManager()->getService(name));
     if (window != 0) {
-        window->linkToDeath(this);
+        window->linkToDeath(static_cast<IBinder::DeathRecipient*>(this));
     }
 
     // stop boot animation
@@ -206,60 +233,110 @@
     property_set("service.bootanim.exit", "1");
 }
 
-static inline uint16_t pack565(int r, int g, int b) {
-    return (r<<11)|(g<<5)|b;
+void SurfaceFlinger::deleteTextureAsync(GLuint texture) {
+    class MessageDestroyGLTexture : public MessageBase {
+        GLuint texture;
+    public:
+        MessageDestroyGLTexture(GLuint texture)
+            : texture(texture) {
+        }
+        virtual bool handler() {
+            glDeleteTextures(1, &texture);
+            return true;
+        }
+    };
+    postMessageAsync(new MessageDestroyGLTexture(texture));
 }
 
-status_t SurfaceFlinger::readyToRun()
+status_t SurfaceFlinger::selectConfigForPixelFormat(
+        EGLDisplay dpy,
+        EGLint const* attrs,
+        PixelFormat format,
+        EGLConfig* outConfig)
 {
-    ALOGI(   "SurfaceFlinger's main thread ready to run. "
-            "Initializing graphics H/W...");
+    EGLConfig config = NULL;
+    EGLint numConfigs = -1, n=0;
+    eglGetConfigs(dpy, NULL, 0, &numConfigs);
+    EGLConfig* const configs = new EGLConfig[numConfigs];
+    eglChooseConfig(dpy, attrs, configs, numConfigs, &n);
+    for (int i=0 ; i<n ; i++) {
+        EGLint nativeVisualId = 0;
+        eglGetConfigAttrib(dpy, configs[i], EGL_NATIVE_VISUAL_ID, &nativeVisualId);
+        if (nativeVisualId>0 && format == nativeVisualId) {
+            *outConfig = configs[i];
+            delete [] configs;
+            return NO_ERROR;
+        }
+    }
+    delete [] configs;
+    return NAME_NOT_FOUND;
+}
 
-    // we only support one display currently
-    int dpy = 0;
+EGLConfig SurfaceFlinger::selectEGLConfig(EGLDisplay display, EGLint nativeVisualId) {
+    // select our EGLConfig. It must support EGL_RECORDABLE_ANDROID if
+    // it is to be used with WIFI displays
+    EGLConfig config;
+    EGLint dummy;
+    status_t err;
+    EGLint attribs[] = {
+            EGL_SURFACE_TYPE,           EGL_WINDOW_BIT,
+            EGL_RECORDABLE_ANDROID,     EGL_TRUE,
+            EGL_NONE
+    };
+    err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config);
+    if (err) {
+        // maybe we failed because of EGL_RECORDABLE_ANDROID
+        ALOGW("couldn't find an EGLConfig with EGL_RECORDABLE_ANDROID");
+        attribs[2] = EGL_NONE;
+        err = selectConfigForPixelFormat(display, attribs, nativeVisualId, &config);
+    }
+    ALOGE_IF(err, "couldn't find an EGLConfig matching the screen format");
+    if (eglGetConfigAttrib(display, config, EGL_CONFIG_CAVEAT, &dummy) == EGL_TRUE) {
+        ALOGW_IF(dummy == EGL_SLOW_CONFIG, "EGL_SLOW_CONFIG selected!");
+    }
+    return config;
+}
 
-    {
-        // initialize the main display
-        GraphicPlane& plane(graphicPlane(dpy));
-        DisplayHardware* const hw = new DisplayHardware(this, dpy);
-        plane.setDisplayHardware(hw);
+EGLContext SurfaceFlinger::createGLContext(EGLDisplay display, EGLConfig config) {
+    // Also create our EGLContext
+    EGLint contextAttributes[] = {
+#ifdef EGL_IMG_context_priority
+#ifdef HAS_CONTEXT_PRIORITY
+#warning "using EGL_IMG_context_priority"
+            EGL_CONTEXT_PRIORITY_LEVEL_IMG, EGL_CONTEXT_PRIORITY_HIGH_IMG,
+#endif
+#endif
+            EGL_NONE, EGL_NONE
+    };
+    EGLContext ctxt = eglCreateContext(display, config, NULL, contextAttributes);
+    ALOGE_IF(ctxt==EGL_NO_CONTEXT, "EGLContext creation failed");
+    return ctxt;
+}
+
+void SurfaceFlinger::initializeGL(EGLDisplay display, EGLSurface surface) {
+    EGLBoolean result = eglMakeCurrent(display, surface, surface, mEGLContext);
+    if (!result) {
+        ALOGE("Couldn't create a working GLES context. check logs. exiting...");
+        exit(0);
     }
 
-    // create the shared control-block
-    mServerHeap = new MemoryHeapBase(4096,
-            MemoryHeapBase::READ_ONLY, "SurfaceFlinger read-only heap");
-    ALOGE_IF(mServerHeap==0, "can't create shared memory dealer");
+    GLExtensions& extensions(GLExtensions::getInstance());
+    extensions.initWithGLStrings(
+            glGetString(GL_VENDOR),
+            glGetString(GL_RENDERER),
+            glGetString(GL_VERSION),
+            glGetString(GL_EXTENSIONS),
+            eglQueryString(display, EGL_VENDOR),
+            eglQueryString(display, EGL_VERSION),
+            eglQueryString(display, EGL_EXTENSIONS));
 
-    mServerCblk = static_cast<surface_flinger_cblk_t*>(mServerHeap->getBase());
-    ALOGE_IF(mServerCblk==0, "can't get to shared control block's address");
+    EGLint w, h;
+    eglQuerySurface(display, surface, EGL_WIDTH,  &w);
+    eglQuerySurface(display, surface, EGL_HEIGHT, &h);
 
-    new(mServerCblk) surface_flinger_cblk_t;
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
+    glGetIntegerv(GL_MAX_VIEWPORT_DIMS, mMaxViewportDims);
 
-    // initialize primary screen
-    // (other display should be initialized in the same manner, but
-    // asynchronously, as they could come and go. None of this is supported
-    // yet).
-    const GraphicPlane& plane(graphicPlane(dpy));
-    const DisplayHardware& hw = plane.displayHardware();
-    const uint32_t w = hw.getWidth();
-    const uint32_t h = hw.getHeight();
-    const uint32_t f = hw.getFormat();
-    hw.makeCurrent();
-
-    // initialize the shared control block
-    mServerCblk->connected |= 1<<dpy;
-    display_cblk_t* dcblk = mServerCblk->displays + dpy;
-    memset(dcblk, 0, sizeof(display_cblk_t));
-    dcblk->w            = plane.getWidth();
-    dcblk->h            = plane.getHeight();
-    dcblk->format       = f;
-    dcblk->orientation  = ISurfaceComposer::eOrientationDefault;
-    dcblk->xdpi         = hw.getDpiX();
-    dcblk->ydpi         = hw.getDpiY();
-    dcblk->fps          = hw.getRefreshRate();
-    dcblk->density      = hw.getDensity();
-
-    // Initialize OpenGL|ES
     glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
     glPixelStorei(GL_PACK_ALIGNMENT, 4);
     glEnableClientState(GL_VERTEX_ARRAY);
@@ -267,17 +344,11 @@
     glDisable(GL_DITHER);
     glDisable(GL_CULL_FACE);
 
-    const uint16_t g0 = pack565(0x0F,0x1F,0x0F);
-    const uint16_t g1 = pack565(0x17,0x2f,0x17);
-    const uint16_t wormholeTexData[4] = { g0, g1, g1, g0 };
-    glGenTextures(1, &mWormholeTexName);
-    glBindTexture(GL_TEXTURE_2D, mWormholeTexName);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
-    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, 2, 2, 0,
-            GL_RGB, GL_UNSIGNED_SHORT_5_6_5, wormholeTexData);
+    struct pack565 {
+        inline uint16_t operator() (int r, int g, int b) const {
+            return (r<<11)|(g<<5)|b;
+        }
+    } pack565;
 
     const uint16_t protTexData[] = { pack565(0x03, 0x03, 0x03) };
     glGenTextures(1, &mProtectedTexName);
@@ -295,18 +366,87 @@
     // put the origin in the left-bottom corner
     glOrthof(0, w, 0, h, 0, 1); // l=0, r=w ; b=0, t=h
 
+    // print some debugging info
+    EGLint r,g,b,a;
+    eglGetConfigAttrib(display, mEGLConfig, EGL_RED_SIZE,   &r);
+    eglGetConfigAttrib(display, mEGLConfig, EGL_GREEN_SIZE, &g);
+    eglGetConfigAttrib(display, mEGLConfig, EGL_BLUE_SIZE,  &b);
+    eglGetConfigAttrib(display, mEGLConfig, EGL_ALPHA_SIZE, &a);
+    ALOGI("EGL informations:");
+    ALOGI("vendor    : %s", extensions.getEglVendor());
+    ALOGI("version   : %s", extensions.getEglVersion());
+    ALOGI("extensions: %s", extensions.getEglExtension());
+    ALOGI("Client API: %s", eglQueryString(display, EGL_CLIENT_APIS)?:"Not Supported");
+    ALOGI("EGLSurface: %d-%d-%d-%d, config=%p", r, g, b, a, mEGLConfig);
+    ALOGI("OpenGL ES informations:");
+    ALOGI("vendor    : %s", extensions.getVendor());
+    ALOGI("renderer  : %s", extensions.getRenderer());
+    ALOGI("version   : %s", extensions.getVersion());
+    ALOGI("extensions: %s", extensions.getExtension());
+    ALOGI("GL_MAX_TEXTURE_SIZE = %d", mMaxTextureSize);
+    ALOGI("GL_MAX_VIEWPORT_DIMS = %d x %d", mMaxViewportDims[0], mMaxViewportDims[1]);
+}
+
+status_t SurfaceFlinger::readyToRun()
+{
+    ALOGI(  "SurfaceFlinger's main thread ready to run. "
+            "Initializing graphics H/W...");
+
+    // initialize EGL
+    mEGLDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    eglInitialize(mEGLDisplay, NULL, NULL);
+
+    // Initialize the main display
+    // create native window to main display
+    sp<FramebufferSurface> fbs = FramebufferSurface::create();
+    if (fbs == NULL) {
+        ALOGE("Display subsystem failed to initialize. check logs. exiting...");
+        exit(0);
+    }
+
+    sp<SurfaceTextureClient> stc(new SurfaceTextureClient(
+            static_cast<sp<ISurfaceTexture> >(fbs->getBufferQueue())));
+
+    // initialize the config and context
+    int format;
+    ANativeWindow* const anw = stc.get();
+    anw->query(anw, NATIVE_WINDOW_FORMAT, &format);
+    mEGLConfig  = selectEGLConfig(mEGLDisplay, format);
+    mEGLContext = createGLContext(mEGLDisplay, mEGLConfig);
+
+    // initialize our main display hardware
+
+    for (size_t i=0 ; i<DisplayDevice::DISPLAY_ID_COUNT ; i++) {
+        mDefaultDisplays[i] = new BBinder();
+        mCurrentState.displays.add(mDefaultDisplays[i], DisplayDeviceState(i));
+    }
+    sp<DisplayDevice> hw = new DisplayDevice(this,
+            DisplayDevice::DISPLAY_ID_MAIN, HWC_DISPLAY_PRIMARY,
+            anw, fbs, mEGLConfig);
+    mDisplays.add(hw->getDisplayId(), hw);
+
+    //  initialize OpenGL ES
+    EGLSurface surface = hw->getEGLSurface();
+    initializeGL(mEGLDisplay, surface);
 
     // start the EventThread
     mEventThread = new EventThread(this);
     mEventQueue.setEventThread(mEventThread);
-    hw.startSleepManagement();
 
-    /*
-     *  We're now ready to accept clients...
-     */
+    // initialize the H/W composer
+    mHwc = new HWComposer(this,
+            *static_cast<HWComposer::EventHandler *>(this),
+            fbs->getFbHal());
 
+    // initialize our drawing state
+    mDrawingState = mCurrentState;
+
+    // We're now ready to accept clients...
     mReadyToRunBarrier.open();
 
+    // set initial conditions (e.g. unblank default device)
+    initializeDisplays();
+
     // start boot animation
     startBootAnim();
 
@@ -319,6 +459,15 @@
     property_set("ctl.start", "bootanim");
 }
 
+uint32_t SurfaceFlinger::getMaxTextureSize() const {
+    return mMaxTextureSize;
+}
+
+uint32_t SurfaceFlinger::getMaxViewportDims() const {
+    return mMaxViewportDims[0] < mMaxViewportDims[1] ?
+            mMaxViewportDims[0] : mMaxViewportDims[1];
+}
+
 // ----------------------------------------------------------------------------
 
 bool SurfaceFlinger::authenticateSurfaceTexture(
@@ -362,12 +511,95 @@
     return false;
 }
 
+status_t SurfaceFlinger::getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info) {
+    // TODO: this is mostly here only for compatibility
+    //       the display size is needed but the display metrics should come from elsewhere
+    if (display != mDefaultDisplays[ISurfaceComposer::eDisplayIdMain]) {
+        // TODO: additional displays not yet supported
+        return BAD_INDEX;
+    }
+
+    const HWComposer& hwc(getHwComposer());
+    float xdpi = hwc.getDpiX();
+    float ydpi = hwc.getDpiY();
+
+    // TODO: Not sure if display density should handled by SF any longer
+    class Density {
+        static int getDensityFromProperty(char const* propName) {
+            char property[PROPERTY_VALUE_MAX];
+            int density = 0;
+            if (property_get(propName, property, NULL) > 0) {
+                density = atoi(property);
+            }
+            return density;
+        }
+    public:
+        static int getEmuDensity() {
+            return getDensityFromProperty("qemu.sf.lcd_density"); }
+        static int getBuildDensity()  {
+            return getDensityFromProperty("ro.sf.lcd_density"); }
+    };
+    // The density of the device is provided by a build property
+    float density = Density::getBuildDensity() / 160.0f;
+    if (density == 0) {
+        // the build doesn't provide a density -- this is wrong!
+        // use xdpi instead
+        ALOGE("ro.sf.lcd_density must be defined as a build property");
+        density = xdpi / 160.0f;
+    }
+    if (Density::getEmuDensity()) {
+        // if "qemu.sf.lcd_density" is specified, it overrides everything
+        xdpi = ydpi = density = Density::getEmuDensity();
+        density /= 160.0f;
+    }
+
+    sp<const DisplayDevice> hw(getDefaultDisplayDevice());
+    info->w = hw->getWidth();
+    info->h = hw->getHeight();
+    info->xdpi = xdpi;
+    info->ydpi = ydpi;
+    info->fps = float(1e9 / hwc.getRefreshPeriod());
+    info->density = density;
+    info->orientation = hw->getOrientation();
+    // TODO: this needs to go away (currently needed only by webkit)
+    getPixelFormatInfo(hw->getFormat(), &info->pixelFormatInfo);
+    return NO_ERROR;
+}
+
 // ----------------------------------------------------------------------------
 
 sp<IDisplayEventConnection> SurfaceFlinger::createDisplayEventConnection() {
     return mEventThread->createEventConnection();
 }
 
+void SurfaceFlinger::connectDisplay(const sp<ISurfaceTexture>& surface) {
+
+    sp<IBinder> token;
+    { // scope for the lock
+        Mutex::Autolock _l(mStateLock);
+        token = mExtDisplayToken;
+    }
+
+    if (token == 0) {
+        token = createDisplay();
+    }
+
+    { // scope for the lock
+        Mutex::Autolock _l(mStateLock);
+        if (surface == 0) {
+            // release our current display. we're guarantee to have
+            // a reference to it (token), while we hold the lock
+            mExtDisplayToken = 0;
+        } else {
+            mExtDisplayToken = token;
+        }
+
+        DisplayDeviceState& info(mCurrentState.displays.editValueFor(token));
+        info.surface = surface;
+        setTransactionFlags(eDisplayTransactionNeeded);
+    }
+}
+
 // ----------------------------------------------------------------------------
 
 void SurfaceFlinger::waitForEvent() {
@@ -400,83 +632,262 @@
     return res;
 }
 
-bool SurfaceFlinger::threadLoop()
-{
+bool SurfaceFlinger::threadLoop() {
     waitForEvent();
     return true;
 }
 
-void SurfaceFlinger::onMessageReceived(int32_t what)
-{
+void SurfaceFlinger::onVSyncReceived(int dpy, nsecs_t timestamp) {
+    mEventThread->onVSyncReceived(dpy, timestamp);
+}
+
+void SurfaceFlinger::eventControl(int event, int enabled) {
+    getHwComposer().eventControl(event, enabled);
+}
+
+void SurfaceFlinger::onMessageReceived(int32_t what) {
     ATRACE_CALL();
     switch (what) {
-        case MessageQueue::REFRESH: {
-//        case MessageQueue::INVALIDATE: {
-            // if we're in a global transaction, don't do anything.
-            const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
-            uint32_t transactionFlags = peekTransactionFlags(mask);
-            if (CC_UNLIKELY(transactionFlags)) {
-                handleTransaction(transactionFlags);
-            }
-
-            // post surfaces (if needed)
-            handlePageFlip();
-
-//            signalRefresh();
-//
-//        } break;
-//
-//        case MessageQueue::REFRESH: {
-
-            handleRefresh();
-
-            const DisplayHardware& hw(graphicPlane(0).displayHardware());
-
-//            if (mDirtyRegion.isEmpty()) {
-//                return;
-//            }
-
-            if (CC_UNLIKELY(mHwWorkListDirty)) {
-                // build the h/w work list
-                handleWorkList();
-            }
-
-            if (CC_LIKELY(hw.canDraw())) {
-                // repaint the framebuffer (if needed)
-                handleRepaint();
-                // inform the h/w that we're done compositing
-                hw.compositionComplete();
-                postFramebuffer();
-            } else {
-                // pretend we did the post
-                hw.compositionComplete();
-            }
-
-        } break;
+    case MessageQueue::INVALIDATE:
+        handleMessageTransaction();
+        handleMessageInvalidate();
+        signalRefresh();
+        break;
+    case MessageQueue::REFRESH:
+        handleMessageRefresh();
+        break;
     }
 }
 
+void SurfaceFlinger::handleMessageTransaction() {
+    uint32_t transactionFlags = peekTransactionFlags(eTransactionMask);
+    if (transactionFlags) {
+        handleTransaction(transactionFlags);
+    }
+}
+
+void SurfaceFlinger::handleMessageInvalidate() {
+    ATRACE_CALL();
+    handlePageFlip();
+}
+
+void SurfaceFlinger::handleMessageRefresh() {
+    ATRACE_CALL();
+    preComposition();
+    rebuildLayerStacks();
+    setUpHWComposer();
+    doDebugFlashRegions();
+    doComposition();
+    postComposition();
+}
+
+void SurfaceFlinger::doDebugFlashRegions()
+{
+    // is debugging enabled
+    if (CC_LIKELY(!mDebugRegion))
+        return;
+
+    const bool repaintEverything = mRepaintEverything;
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        const sp<DisplayDevice>& hw(mDisplays[dpy]);
+        if (hw->canDraw()) {
+            // transform the dirty region into this screen's coordinate space
+            const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
+            if (!dirtyRegion.isEmpty()) {
+                // redraw the whole screen
+                doComposeSurfaces(hw, Region(hw->bounds()));
+
+                // and draw the dirty region
+                glDisable(GL_TEXTURE_EXTERNAL_OES);
+                glDisable(GL_TEXTURE_2D);
+                glDisable(GL_BLEND);
+                glColor4f(1, 0, 1, 1);
+                const int32_t height = hw->getHeight();
+                Region::const_iterator it = dirtyRegion.begin();
+                Region::const_iterator const end = dirtyRegion.end();
+                while (it != end) {
+                    const Rect& r = *it++;
+                    GLfloat vertices[][2] = {
+                            { r.left,  height - r.top },
+                            { r.left,  height - r.bottom },
+                            { r.right, height - r.bottom },
+                            { r.right, height - r.top }
+                    };
+                    glVertexPointer(2, GL_FLOAT, 0, vertices);
+                    glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
+                }
+                hw->compositionComplete();
+                // FIXME
+                if (hw->getDisplayId() >= DisplayDevice::DISPLAY_ID_COUNT) {
+                    eglSwapBuffers(mEGLDisplay, hw->getEGLSurface());
+                }
+            }
+        }
+    }
+
+    postFramebuffer();
+
+    if (mDebugRegion > 1) {
+        usleep(mDebugRegion * 1000);
+    }
+}
+
+void SurfaceFlinger::preComposition()
+{
+    bool needExtraInvalidate = false;
+    const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+    const size_t count = currentLayers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        if (currentLayers[i]->onPreComposition()) {
+            needExtraInvalidate = true;
+        }
+    }
+    if (needExtraInvalidate) {
+        signalLayerUpdate();
+    }
+}
+
+void SurfaceFlinger::postComposition()
+{
+    const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+    const size_t count = currentLayers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        currentLayers[i]->onPostComposition();
+    }
+}
+
+void SurfaceFlinger::rebuildLayerStacks() {
+    // rebuild the visible layer list per screen
+    if (CC_UNLIKELY(mVisibleRegionsDirty)) {
+        ATRACE_CALL();
+        mVisibleRegionsDirty = false;
+        invalidateHwcGeometry();
+        const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
+        for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+            const sp<DisplayDevice>& hw(mDisplays[dpy]);
+            Region opaqueRegion;
+            Region dirtyRegion;
+            computeVisibleRegions(currentLayers,
+                    hw->getLayerStack(), dirtyRegion, opaqueRegion);
+            hw->dirtyRegion.orSelf(dirtyRegion);
+
+            Vector< sp<LayerBase> > layersSortedByZ;
+            const size_t count = currentLayers.size();
+            for (size_t i=0 ; i<count ; i++) {
+                const Layer::State& s(currentLayers[i]->drawingState());
+                if (s.layerStack == hw->getLayerStack()) {
+                    if (!currentLayers[i]->visibleRegion.isEmpty()) {
+                        layersSortedByZ.add(currentLayers[i]);
+                    }
+                }
+            }
+            hw->setVisibleLayersSortedByZ(layersSortedByZ);
+            hw->undefinedRegion.set(hw->getBounds());
+            hw->undefinedRegion.subtractSelf(
+                    hw->getTransform().transform(opaqueRegion));
+        }
+    }
+}
+
+void SurfaceFlinger::setUpHWComposer() {
+    HWComposer& hwc(getHwComposer());
+    if (hwc.initCheck() == NO_ERROR) {
+        // build the h/w work list
+        const bool workListsDirty = mHwWorkListDirty;
+        mHwWorkListDirty = false;
+        for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+            sp<const DisplayDevice> hw(mDisplays[dpy]);
+            const int32_t id = hw->getHwcDisplayId();
+            if (id >= 0) {
+                const Vector< sp<LayerBase> >& currentLayers(
+                    hw->getVisibleLayersSortedByZ());
+                const size_t count = currentLayers.size();
+                if (hwc.createWorkList(id, count) >= 0) {
+                    HWComposer::LayerListIterator cur = hwc.begin(id);
+                    const HWComposer::LayerListIterator end = hwc.end(id);
+                    for (size_t i=0 ; cur!=end && i<count ; ++i, ++cur) {
+                        const sp<LayerBase>& layer(currentLayers[i]);
+
+                        if (CC_UNLIKELY(workListsDirty)) {
+                            layer->setGeometry(hw, *cur);
+                            if (mDebugDisableHWC || mDebugRegion) {
+                                cur->setSkip(true);
+                            }
+                        }
+
+                        /*
+                         * update the per-frame h/w composer data for each layer
+                         * and build the transparent region of the FB
+                         */
+                        layer->setPerFrameData(hw, *cur);
+                    }
+                }
+            }
+        }
+        status_t err = hwc.prepare();
+        ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
+    }
+}
+
+void SurfaceFlinger::doComposition() {
+    ATRACE_CALL();
+    const bool repaintEverything = android_atomic_and(0, &mRepaintEverything);
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        const sp<DisplayDevice>& hw(mDisplays[dpy]);
+        if (hw->canDraw()) {
+            // transform the dirty region into this screen's coordinate space
+            const Region dirtyRegion(hw->getDirtyRegion(repaintEverything));
+            if (!dirtyRegion.isEmpty()) {
+                // repaint the framebuffer (if needed)
+                doDisplayComposition(hw, dirtyRegion);
+            }
+            hw->dirtyRegion.clear();
+            hw->flip(hw->swapRegion);
+            hw->swapRegion.clear();
+        }
+        // inform the h/w that we're done compositing
+        hw->compositionComplete();
+    }
+    postFramebuffer();
+}
+
 void SurfaceFlinger::postFramebuffer()
 {
     ATRACE_CALL();
-    // mSwapRegion can be empty here is some cases, for instance if a hidden
-    // or fully transparent window is updating.
-    // in that case, we need to flip anyways to not risk a deadlock with
-    // h/w composer.
 
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
     const nsecs_t now = systemTime();
     mDebugInSwapBuffers = now;
-    hw.flip(mSwapRegion);
 
-    size_t numLayers = mVisibleLayersSortedByZ.size();
-    for (size_t i = 0; i < numLayers; i++) {
-        mVisibleLayersSortedByZ[i]->onLayerDisplayed();
+    HWComposer& hwc(getHwComposer());
+    if (hwc.initCheck() == NO_ERROR) {
+        // FIXME: EGL spec says:
+        //   "surface must be bound to the calling thread's current context,
+        //    for the current rendering API."
+        DisplayDevice::makeCurrent(
+                getDisplayDevice(DisplayDevice::DISPLAY_ID_MAIN), mEGLContext);
+        hwc.commit();
+    }
+
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        sp<const DisplayDevice> hw(mDisplays[dpy]);
+        const Vector< sp<LayerBase> >& currentLayers(hw->getVisibleLayersSortedByZ());
+        const size_t count = currentLayers.size();
+        int32_t id = hw->getHwcDisplayId();
+        if (id >=0 && hwc.initCheck() == NO_ERROR) {
+            HWComposer::LayerListIterator cur = hwc.begin(id);
+            const HWComposer::LayerListIterator end = hwc.end(id);
+            for (size_t i = 0; cur != end && i < count; ++i, ++cur) {
+                currentLayers[i]->onLayerDisplayed(hw, &*cur);
+            }
+        } else {
+            for (size_t i = 0; i < count; i++) {
+                currentLayers[i]->onLayerDisplayed(hw, NULL);
+            }
+        }
     }
 
     mLastSwapBufferTime = systemTime() - now;
     mDebugInSwapBuffers = 0;
-    mSwapRegion.clear();
 }
 
 void SurfaceFlinger::handleTransaction(uint32_t transactionFlags)
@@ -493,8 +904,7 @@
     // with mStateLock held to guarantee that mCurrentState won't change
     // until the transaction is committed.
 
-    const uint32_t mask = eTransactionNeeded | eTraversalNeeded;
-    transactionFlags = getTransactionFlags(mask);
+    transactionFlags = getTransactionFlags(eTransactionMask);
     handleTransactionLocked(transactionFlags);
 
     mLastTransactionTime = systemTime() - now;
@@ -513,8 +923,7 @@
      * (perform the transaction for each of them if needed)
      */
 
-    const bool layersNeedTransaction = transactionFlags & eTraversalNeeded;
-    if (layersNeedTransaction) {
+    if (transactionFlags & eTraversalNeeded) {
         for (size_t i=0 ; i<count ; i++) {
             const sp<LayerBase>& layer = currentLayers[i];
             uint32_t trFlags = layer->getTransactionFlags(eTransactionNeeded);
@@ -527,49 +936,114 @@
     }
 
     /*
+     * Perform display own transactions if needed
+     */
+
+    if (transactionFlags & eDisplayTransactionNeeded) {
+        // here we take advantage of Vector's copy-on-write semantics to
+        // improve performance by skipping the transaction entirely when
+        // know that the lists are identical
+        const KeyedVector<  wp<IBinder>, DisplayDeviceState>& curr(mCurrentState.displays);
+        const KeyedVector<  wp<IBinder>, DisplayDeviceState>& draw(mDrawingState.displays);
+        if (!curr.isIdenticalTo(draw)) {
+            mVisibleRegionsDirty = true;
+            const size_t cc = curr.size();
+            const size_t dc = draw.size();
+
+            // find the displays that were removed
+            // (ie: in drawing state but not in current state)
+            // also handle displays that changed
+            // (ie: displays that are in both lists)
+            for (size_t i=0 ; i<dc ; i++) {
+                const ssize_t j = curr.indexOfKey(draw.keyAt(i));
+                if (j < 0) {
+                    // in drawing state but not in current state
+                    if (draw[i].id != DisplayDevice::DISPLAY_ID_MAIN) {
+                        mDisplays.removeItem(draw[i].id);
+                    } else {
+                        ALOGW("trying to remove the main display");
+                    }
+                } else {
+                    // this display is in both lists. see if something changed.
+                    const DisplayDeviceState& state(curr[j]);
+                    if (state.surface->asBinder() != draw[i].surface->asBinder()) {
+                        // changing the surface is like destroying and
+                        // recreating the DisplayDevice
+                        const int32_t hwcDisplayId =
+                            (uint32_t(state.id) < DisplayDevice::DISPLAY_ID_COUNT) ?
+                                state.id : getHwComposer().allocateDisplayId();
+
+                        sp<SurfaceTextureClient> stc(
+                                new SurfaceTextureClient(state.surface));
+
+                        sp<DisplayDevice> disp = new DisplayDevice(this,
+                            state.id, hwcDisplayId, stc, 0, mEGLConfig);
+
+                        disp->setLayerStack(state.layerStack);
+                        disp->setOrientation(state.orientation);
+                        // TODO: take viewport and frame into account
+                        mDisplays.replaceValueFor(state.id, disp);
+                    }
+                    if (state.layerStack != draw[i].layerStack) {
+                        const sp<DisplayDevice>& disp(getDisplayDevice(state.id));
+                        disp->setLayerStack(state.layerStack);
+                    }
+                    if (state.orientation != draw[i].orientation ||
+                        state.viewport != draw[i].viewport ||
+                        state.frame != draw[i].frame) {
+                        const sp<DisplayDevice>& disp(getDisplayDevice(state.id));
+                        disp->setOrientation(state.orientation);
+                        // TODO: take viewport and frame into account
+                    }
+                }
+            }
+
+            // find displays that were added
+            // (ie: in current state but not in drawing state)
+            for (size_t i=0 ; i<cc ; i++) {
+                if (draw.indexOfKey(curr.keyAt(i)) < 0) {
+                    const DisplayDeviceState& state(curr[i]);
+                    const int32_t hwcDisplayId =
+                        (uint32_t(state.id) < DisplayDevice::DISPLAY_ID_COUNT) ?
+                            state.id : getHwComposer().allocateDisplayId();
+
+                    sp<SurfaceTextureClient> stc(
+                            new SurfaceTextureClient(state.surface));
+                    sp<DisplayDevice> disp = new DisplayDevice(this,
+                        state.id, hwcDisplayId, stc, 0, mEGLConfig);
+                    mDisplays.add(state.id, disp);
+                }
+            }
+        }
+    }
+
+    /*
      * Perform our own transaction if needed
      */
 
-    if (transactionFlags & eTransactionNeeded) {
-        if (mCurrentState.orientation != mDrawingState.orientation) {
-            // the orientation has changed, recompute all visible regions
-            // and invalidate everything.
+    const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
+    if (currentLayers.size() > previousLayers.size()) {
+        // layers have been added
+        mVisibleRegionsDirty = true;
+    }
 
-            const int dpy = 0;
-            const int orientation = mCurrentState.orientation;
-            // Currently unused: const uint32_t flags = mCurrentState.orientationFlags;
-            GraphicPlane& plane(graphicPlane(dpy));
-            plane.setOrientation(orientation);
-
-            // update the shared control block
-            const DisplayHardware& hw(plane.displayHardware());
-            volatile display_cblk_t* dcblk = mServerCblk->displays + dpy;
-            dcblk->orientation = orientation;
-            dcblk->w = plane.getWidth();
-            dcblk->h = plane.getHeight();
-
-            mVisibleRegionsDirty = true;
-            mDirtyRegion.set(hw.bounds());
-        }
-
-        if (currentLayers.size() > mDrawingState.layersSortedByZ.size()) {
-            // layers have been added
-            mVisibleRegionsDirty = true;
-        }
-
-        // some layers might have been removed, so
-        // we need to update the regions they're exposing.
-        if (mLayersRemoved) {
-            mLayersRemoved = false;
-            mVisibleRegionsDirty = true;
-            const LayerVector& previousLayers(mDrawingState.layersSortedByZ);
-            const size_t count = previousLayers.size();
-            for (size_t i=0 ; i<count ; i++) {
-                const sp<LayerBase>& layer(previousLayers[i]);
-                if (currentLayers.indexOf( layer ) < 0) {
-                    // this layer is not visible anymore
-                    mDirtyRegionRemovedLayer.orSelf(layer->visibleRegionScreen);
-                }
+    // some layers might have been removed, so
+    // we need to update the regions they're exposing.
+    if (mLayersRemoved) {
+        mLayersRemoved = false;
+        mVisibleRegionsDirty = true;
+        const size_t count = previousLayers.size();
+        for (size_t i=0 ; i<count ; i++) {
+            const sp<LayerBase>& layer(previousLayers[i]);
+            if (currentLayers.indexOf(layer) < 0) {
+                // this layer is not visible anymore
+                // TODO: we could traverse the tree from front to back and
+                //       compute the actual visible region
+                // TODO: we could cache the transformed region
+                Layer::State front(layer->drawingState());
+                Region visibleReg = front.transform.transform(
+                        Region(Rect(front.active.w, front.active.h)));
+                invalidateLayerStack(front.layerStack, visibleReg);
             }
         }
     }
@@ -577,30 +1051,44 @@
     commitTransaction();
 }
 
+void SurfaceFlinger::commitTransaction()
+{
+    if (!mLayersPendingRemoval.isEmpty()) {
+        // Notify removed layers now that they can't be drawn from
+        for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) {
+            mLayersPendingRemoval[i]->onRemoved();
+        }
+        mLayersPendingRemoval.clear();
+    }
+
+    mDrawingState = mCurrentState;
+    mTransationPending = false;
+    mTransactionCV.broadcast();
+}
+
 void SurfaceFlinger::computeVisibleRegions(
-    const LayerVector& currentLayers, Region& dirtyRegion, Region& opaqueRegion)
+        const LayerVector& currentLayers, uint32_t layerStack,
+        Region& outDirtyRegion, Region& outOpaqueRegion)
 {
     ATRACE_CALL();
 
-    const GraphicPlane& plane(graphicPlane(0));
-    const Transform& planeTransform(plane.transform());
-    const DisplayHardware& hw(plane.displayHardware());
-    const Region screenRegion(hw.bounds());
-
     Region aboveOpaqueLayers;
     Region aboveCoveredLayers;
     Region dirty;
 
-    bool secureFrameBuffer = false;
+    outDirtyRegion.clear();
 
     size_t i = currentLayers.size();
     while (i--) {
         const sp<LayerBase>& layer = currentLayers[i];
-        layer->validateVisibility(planeTransform);
 
         // start with the whole surface at its current location
         const Layer::State& s(layer->drawingState());
 
+        // only consider the layers on the given later stack
+        if (s.layerStack != layerStack)
+            continue;
+
         /*
          * opaqueRegion: area of a surface that is fully opaque.
          */
@@ -622,19 +1110,32 @@
 
 
         // handle hidden surfaces by setting the visible region to empty
-        if (CC_LIKELY(!(s.flags & ISurfaceComposer::eLayerHidden) && s.alpha)) {
+        if (CC_LIKELY(!(s.flags & layer_state_t::eLayerHidden) && s.alpha)) {
             const bool translucent = !layer->isOpaque();
-            const Rect bounds(layer->visibleBounds());
+            Rect bounds(layer->computeBounds());
             visibleRegion.set(bounds);
-            visibleRegion.andSelf(screenRegion);
             if (!visibleRegion.isEmpty()) {
                 // Remove the transparent area from the visible region
                 if (translucent) {
-                    visibleRegion.subtractSelf(layer->transparentRegionScreen);
+                    Region transparentRegionScreen;
+                    const Transform tr(s.transform);
+                    if (tr.transformed()) {
+                        if (tr.preserveRects()) {
+                            // transform the transparent region
+                            transparentRegionScreen = tr.transform(s.transparentRegion);
+                        } else {
+                            // transformation too complex, can't do the
+                            // transparent region optimization.
+                            transparentRegionScreen.clear();
+                        }
+                    } else {
+                        transparentRegionScreen = s.transparentRegion;
+                    }
+                    visibleRegion.subtractSelf(transparentRegionScreen);
                 }
 
                 // compute the opaque region
-                const int32_t layerOrientation = layer->getOrientation();
+                const int32_t layerOrientation = s.transform.getOrientation();
                 if (s.alpha==255 && !translucent &&
                         ((layerOrientation & Transform::ROT_INVALID) == false)) {
                     // the opaque region is the layer's footprint
@@ -657,7 +1158,7 @@
             // we need to invalidate the whole region
             dirty = visibleRegion;
             // as well, as the old visible region
-            dirty.orSelf(layer->visibleRegionScreen);
+            dirty.orSelf(layer->visibleRegion);
             layer->contentDirty = false;
         } else {
             /* compute the exposed region:
@@ -673,15 +1174,15 @@
              * exposed because of a resize.
              */
             const Region newExposed = visibleRegion - coveredRegion;
-            const Region oldVisibleRegion = layer->visibleRegionScreen;
-            const Region oldCoveredRegion = layer->coveredRegionScreen;
+            const Region oldVisibleRegion = layer->visibleRegion;
+            const Region oldCoveredRegion = layer->coveredRegion;
             const Region oldExposed = oldVisibleRegion - oldCoveredRegion;
             dirty = (visibleRegion&oldCoveredRegion) | (newExposed-oldExposed);
         }
         dirty.subtractSelf(aboveOpaqueLayers);
 
         // accumulate to the screen dirty region
-        dirtyRegion.orSelf(dirty);
+        outDirtyRegion.orSelf(dirty);
 
         // Update aboveOpaqueLayers for next (lower) layer
         aboveOpaqueLayers.orSelf(opaqueRegion);
@@ -689,70 +1190,36 @@
         // Store the visible region is screen space
         layer->setVisibleRegion(visibleRegion);
         layer->setCoveredRegion(coveredRegion);
-
-        // If a secure layer is partially visible, lock-down the screen!
-        if (layer->isSecure() && !visibleRegion.isEmpty()) {
-            secureFrameBuffer = true;
-        }
     }
 
-    // invalidate the areas where a layer was removed
-    dirtyRegion.orSelf(mDirtyRegionRemovedLayer);
-    mDirtyRegionRemovedLayer.clear();
-
-    mSecureFrameBuffer = secureFrameBuffer;
-    opaqueRegion = aboveOpaqueLayers;
+    outOpaqueRegion = aboveOpaqueLayers;
 }
 
-
-void SurfaceFlinger::commitTransaction()
-{
-    if (!mLayersPendingRemoval.isEmpty()) {
-        // Notify removed layers now that they can't be drawn from
-        for (size_t i = 0; i < mLayersPendingRemoval.size(); i++) {
-            mLayersPendingRemoval[i]->onRemoved();
+void SurfaceFlinger::invalidateLayerStack(uint32_t layerStack,
+        const Region& dirty) {
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        const sp<DisplayDevice>& hw(mDisplays[dpy]);
+        if (hw->getLayerStack() == layerStack) {
+            hw->dirtyRegion.orSelf(dirty);
         }
-        mLayersPendingRemoval.clear();
     }
-
-    mDrawingState = mCurrentState;
-    mTransationPending = false;
-    mTransactionCV.broadcast();
 }
 
 void SurfaceFlinger::handlePageFlip()
 {
-    ATRACE_CALL();
-    const DisplayHardware& hw = graphicPlane(0).displayHardware();
-    const Region screenRegion(hw.bounds());
+    Region dirtyRegion;
 
+    bool visibleRegions = false;
     const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
-    const bool visibleRegions = lockPageFlip(currentLayers);
+    const size_t count = currentLayers.size();
+    for (size_t i=0 ; i<count ; i++) {
+        const sp<LayerBase>& layer(currentLayers[i]);
+        const Region dirty(layer->latchBuffer(visibleRegions));
+        Layer::State s(layer->drawingState());
+        invalidateLayerStack(s.layerStack, dirty);
+    }
 
-        if (visibleRegions || mVisibleRegionsDirty) {
-            Region opaqueRegion;
-            computeVisibleRegions(currentLayers, mDirtyRegion, opaqueRegion);
-
-            /*
-             *  rebuild the visible layer list
-             */
-            const size_t count = currentLayers.size();
-            mVisibleLayersSortedByZ.clear();
-            mVisibleLayersSortedByZ.setCapacity(count);
-            for (size_t i=0 ; i<count ; i++) {
-                if (!currentLayers[i]->visibleRegionScreen.isEmpty())
-                    mVisibleLayersSortedByZ.add(currentLayers[i]);
-            }
-
-            mWormholeRegion = screenRegion.subtract(opaqueRegion);
-            mVisibleRegionsDirty = false;
-            invalidateHwcGeometry();
-        }
-
-    unlockPageFlip(currentLayers);
-
-    mDirtyRegion.orSelf(getAndClearInvalidateRegion());
-    mDirtyRegion.andSelf(screenRegion);
+    mVisibleRegionsDirty |= visibleRegions;
 }
 
 void SurfaceFlinger::invalidateHwcGeometry()
@@ -760,154 +1227,71 @@
     mHwWorkListDirty = true;
 }
 
-bool SurfaceFlinger::lockPageFlip(const LayerVector& currentLayers)
-{
-    bool recomputeVisibleRegions = false;
-    size_t count = currentLayers.size();
-    sp<LayerBase> const* layers = currentLayers.array();
-    for (size_t i=0 ; i<count ; i++) {
-        const sp<LayerBase>& layer(layers[i]);
-        layer->lockPageFlip(recomputeVisibleRegions);
-    }
-    return recomputeVisibleRegions;
-}
 
-void SurfaceFlinger::unlockPageFlip(const LayerVector& currentLayers)
+void SurfaceFlinger::doDisplayComposition(const sp<const DisplayDevice>& hw,
+        const Region& inDirtyRegion)
 {
-    const GraphicPlane& plane(graphicPlane(0));
-    const Transform& planeTransform(plane.transform());
-    const size_t count = currentLayers.size();
-    sp<LayerBase> const* layers = currentLayers.array();
-    for (size_t i=0 ; i<count ; i++) {
-        const sp<LayerBase>& layer(layers[i]);
-        layer->unlockPageFlip(planeTransform, mDirtyRegion);
-    }
-}
-
-void SurfaceFlinger::handleRefresh()
-{
-    bool needInvalidate = false;
-    const LayerVector& currentLayers(mDrawingState.layersSortedByZ);
-    const size_t count = currentLayers.size();
-    for (size_t i=0 ; i<count ; i++) {
-        const sp<LayerBase>& layer(currentLayers[i]);
-        if (layer->onPreComposition()) {
-            needInvalidate = true;
-        }
-    }
-    if (needInvalidate) {
-        signalLayerUpdate();
-    }
-}
-
-
-void SurfaceFlinger::handleWorkList()
-{
-    mHwWorkListDirty = false;
-    HWComposer& hwc(graphicPlane(0).displayHardware().getHwComposer());
-    if (hwc.initCheck() == NO_ERROR) {
-        const Vector< sp<LayerBase> >& currentLayers(mVisibleLayersSortedByZ);
-        const size_t count = currentLayers.size();
-        hwc.createWorkList(count);
-        hwc_layer_t* const cur(hwc.getLayers());
-        for (size_t i=0 ; cur && i<count ; i++) {
-            currentLayers[i]->setGeometry(&cur[i]);
-            if (mDebugDisableHWC || mDebugRegion) {
-                cur[i].compositionType = HWC_FRAMEBUFFER;
-                cur[i].flags |= HWC_SKIP_LAYER;
-            }
-        }
-    }
-}
-
-void SurfaceFlinger::handleRepaint()
-{
-    ATRACE_CALL();
+    Region dirtyRegion(inDirtyRegion);
 
     // compute the invalid region
-    mSwapRegion.orSelf(mDirtyRegion);
+    hw->swapRegion.orSelf(dirtyRegion);
 
-    if (CC_UNLIKELY(mDebugRegion)) {
-        debugFlashRegions();
-    }
-
-    // set the frame buffer
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
-
-    uint32_t flags = hw.getFlags();
-    if (flags & DisplayHardware::SWAP_RECTANGLE) {
+    uint32_t flags = hw->getFlags();
+    if (flags & DisplayDevice::SWAP_RECTANGLE) {
         // we can redraw only what's dirty, but since SWAP_RECTANGLE only
         // takes a rectangle, we must make sure to update that whole
         // rectangle in that case
-        mDirtyRegion.set(mSwapRegion.bounds());
+        dirtyRegion.set(hw->swapRegion.bounds());
     } else {
-        if (flags & DisplayHardware::PARTIAL_UPDATES) {
+        if (flags & DisplayDevice::PARTIAL_UPDATES) {
             // We need to redraw the rectangle that will be updated
             // (pushed to the framebuffer).
             // This is needed because PARTIAL_UPDATES only takes one
-            // rectangle instead of a region (see DisplayHardware::flip())
-            mDirtyRegion.set(mSwapRegion.bounds());
+            // rectangle instead of a region (see DisplayDevice::flip())
+            dirtyRegion.set(hw->swapRegion.bounds());
         } else {
             // we need to redraw everything (the whole screen)
-            mDirtyRegion.set(hw.bounds());
-            mSwapRegion = mDirtyRegion;
+            dirtyRegion.set(hw->bounds());
+            hw->swapRegion = dirtyRegion;
         }
     }
 
-    setupHardwareComposer();
-    composeSurfaces(mDirtyRegion);
+    doComposeSurfaces(hw, dirtyRegion);
+
+    // FIXME: we need to call eglSwapBuffers() on displays that have
+    // GL composition and only on those.
+    // however, currently hwc.commit() already does that for the main
+    // display and never for the other ones
+    if (hw->getDisplayId() >= DisplayDevice::DISPLAY_ID_COUNT) {
+        // FIXME: EGL spec says:
+        //   "surface must be bound to the calling thread's current context,
+        //    for the current rendering API."
+        eglSwapBuffers(mEGLDisplay, hw->getEGLSurface());
+    }
 
     // update the swap region and clear the dirty region
-    mSwapRegion.orSelf(mDirtyRegion);
-    mDirtyRegion.clear();
+    hw->swapRegion.orSelf(dirtyRegion);
 }
 
-void SurfaceFlinger::setupHardwareComposer()
+void SurfaceFlinger::doComposeSurfaces(const sp<const DisplayDevice>& hw, const Region& dirty)
 {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    HWComposer& hwc(hw.getHwComposer());
-    hwc_layer_t* const cur(hwc.getLayers());
-    if (!cur) {
-        return;
-    }
+    HWComposer& hwc(getHwComposer());
+    int32_t id = hw->getHwcDisplayId();
+    HWComposer::LayerListIterator cur = hwc.begin(id);
+    const HWComposer::LayerListIterator end = hwc.end(id);
 
-    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
-    size_t count = layers.size();
+    const bool hasGlesComposition = hwc.hasGlesComposition(id);
+    const bool hasHwcComposition = hwc.hasHwcComposition(id);
+    if (cur==end || hasGlesComposition) {
 
-    ALOGE_IF(hwc.getNumLayers() != count,
-            "HAL number of layers (%d) doesn't match surfaceflinger (%d)",
-            hwc.getNumLayers(), count);
+        DisplayDevice::makeCurrent(hw, mEGLContext);
 
-    // just to be extra-safe, use the smallest count
-    if (hwc.initCheck() == NO_ERROR) {
-        count = count < hwc.getNumLayers() ? count : hwc.getNumLayers();
-    }
+        // set the frame buffer
+        glMatrixMode(GL_MODELVIEW);
+        glLoadIdentity();
 
-    /*
-     *  update the per-frame h/w composer data for each layer
-     *  and build the transparent region of the FB
-     */
-    for (size_t i=0 ; i<count ; i++) {
-        const sp<LayerBase>& layer(layers[i]);
-        layer->setPerFrameData(&cur[i]);
-    }
-    status_t err = hwc.prepare();
-    ALOGE_IF(err, "HWComposer::prepare failed (%s)", strerror(-err));
-}
-
-void SurfaceFlinger::composeSurfaces(const Region& dirty)
-{
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    HWComposer& hwc(hw.getHwComposer());
-    hwc_layer_t* const cur(hwc.getLayers());
-
-    const size_t fbLayerCount = hwc.getLayerCount(HWC_FRAMEBUFFER);
-    if (!cur || fbLayerCount) {
         // Never touch the framebuffer if we don't have any framebuffer layers
-
-        if (hwc.getLayerCount(HWC_OVERLAY)) {
+        if (hasHwcComposition) {
             // when using overlays, we assume a fully transparent framebuffer
             // NOTE: we could reduce how much we need to clear, for instance
             // remove where there are opaque FB layers. however, on some
@@ -916,10 +1300,11 @@
             glClearColor(0, 0, 0, 0);
             glClear(GL_COLOR_BUFFER_BIT);
         } else {
+            const Region region(hw->undefinedRegion.intersect(dirty));
             // screen is already cleared here
-            if (!mWormholeRegion.isEmpty()) {
+            if (!region.isEmpty()) {
                 // can happen with SurfaceView
-                drawWormhole();
+                drawWormhole(region);
             }
         }
 
@@ -927,82 +1312,40 @@
          * and then, render the layers targeted at the framebuffer
          */
 
-        const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
+        const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ());
         const size_t count = layers.size();
-
-        for (size_t i=0 ; i<count ; i++) {
+        const Transform& tr = hw->getTransform();
+        for (size_t i=0 ; i<count ; ++i) {
             const sp<LayerBase>& layer(layers[i]);
-            const Region clip(dirty.intersect(layer->visibleRegionScreen));
-            if (!clip.isEmpty()) {
-                if (cur && (cur[i].compositionType == HWC_OVERLAY)) {
-                    if (i && (cur[i].hints & HWC_HINT_CLEAR_FB)
-                            && layer->isOpaque()) {
-                        // never clear the very first layer since we're
-                        // guaranteed the FB is already cleared
-                        layer->clearWithOpenGL(clip);
+            const Region clip(dirty.intersect(tr.transform(layer->visibleRegion)));
+            if (cur != end) {
+                // we're using h/w composer
+                if (!clip.isEmpty()) {
+                    if (cur->getCompositionType() == HWC_OVERLAY) {
+                        if (i && (cur->getHints() & HWC_HINT_CLEAR_FB)
+                                && layer->isOpaque()) {
+                            // never clear the very first layer since we're
+                            // guaranteed the FB is already cleared
+                            layer->clearWithOpenGL(hw, clip);
+                        }
+                    } else {
+                        layer->draw(hw, clip);
                     }
-                    continue;
+                    layer->setAcquireFence(hw, *cur);
                 }
-                // render the layer
-                layer->draw(clip);
+                ++cur;
+            } else {
+                // we're not using h/w composer
+                if (!clip.isEmpty()) {
+                    layer->draw(hw, clip);
+                }
             }
         }
     }
 }
 
-void SurfaceFlinger::debugFlashRegions()
+void SurfaceFlinger::drawWormhole(const Region& region) const
 {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t flags = hw.getFlags();
-    const int32_t height = hw.getHeight();
-    if (mSwapRegion.isEmpty()) {
-        return;
-    }
-
-    if (!(flags & DisplayHardware::SWAP_RECTANGLE)) {
-        const Region repaint((flags & DisplayHardware::PARTIAL_UPDATES) ?
-                mDirtyRegion.bounds() : hw.bounds());
-        composeSurfaces(repaint);
-    }
-
-    glDisable(GL_TEXTURE_EXTERNAL_OES);
-    glDisable(GL_TEXTURE_2D);
-    glDisable(GL_BLEND);
-
-    static int toggle = 0;
-    toggle = 1 - toggle;
-    if (toggle) {
-        glColor4f(1, 0, 1, 1);
-    } else {
-        glColor4f(1, 1, 0, 1);
-    }
-
-    Region::const_iterator it = mDirtyRegion.begin();
-    Region::const_iterator const end = mDirtyRegion.end();
-    while (it != end) {
-        const Rect& r = *it++;
-        GLfloat vertices[][2] = {
-                { r.left,  height - r.top },
-                { r.left,  height - r.bottom },
-                { r.right, height - r.bottom },
-                { r.right, height - r.top }
-        };
-        glVertexPointer(2, GL_FLOAT, 0, vertices);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-    }
-
-    hw.flip(mSwapRegion);
-
-    if (mDebugRegion > 1)
-        usleep(mDebugRegion * 1000);
-}
-
-void SurfaceFlinger::drawWormhole() const
-{
-    const Region region(mWormholeRegion.intersect(mDirtyRegion));
-    if (region.isEmpty())
-        return;
-
     glDisable(GL_TEXTURE_EXTERNAL_OES);
     glDisable(GL_TEXTURE_2D);
     glDisable(GL_BLEND);
@@ -1026,30 +1369,15 @@
     }
 }
 
-status_t SurfaceFlinger::addLayer(const sp<LayerBase>& layer)
-{
-    Mutex::Autolock _l(mStateLock);
-    addLayer_l(layer);
-    setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
-    return NO_ERROR;
-}
-
-status_t SurfaceFlinger::addLayer_l(const sp<LayerBase>& layer)
-{
-    ssize_t i = mCurrentState.layersSortedByZ.add(layer);
-    return (i < 0) ? status_t(i) : status_t(NO_ERROR);
-}
-
 ssize_t SurfaceFlinger::addClientLayer(const sp<Client>& client,
         const sp<LayerBaseClient>& lbc)
 {
     // attach this layer to the client
     size_t name = client->attachLayer(lbc);
 
-    Mutex::Autolock _l(mStateLock);
-
     // add this layer to the current state list
-    addLayer_l(lbc);
+    Mutex::Autolock _l(mStateLock);
+    mCurrentState.layersSortedByZ.add(lbc);
 
     return ssize_t(name);
 }
@@ -1065,10 +1393,6 @@
 
 status_t SurfaceFlinger::removeLayer_l(const sp<LayerBase>& layerBase)
 {
-    sp<LayerBaseClient> lbc(layerBase->getLayerBaseClient());
-    if (lbc != 0) {
-        mLayerMap.removeItem( lbc->getSurfaceBinder() );
-    }
     ssize_t index = mCurrentState.layersSortedByZ.remove(layerBase);
     if (index >= 0) {
         mLayersRemoved = true;
@@ -1095,13 +1419,6 @@
     return (err == NAME_NOT_FOUND) ? status_t(NO_ERROR) : err;
 }
 
-status_t SurfaceFlinger::invalidateLayerVisibility(const sp<LayerBase>& layer)
-{
-    layer->forceVisibilityTransaction();
-    setTransactionFlags(eTraversalNeeded);
-    return NO_ERROR;
-}
-
 uint32_t SurfaceFlinger::peekTransactionFlags(uint32_t flags)
 {
     return android_atomic_release_load(&mTransactionFlags);
@@ -1121,23 +1438,21 @@
     return old;
 }
 
-
-void SurfaceFlinger::setTransactionState(const Vector<ComposerState>& state,
-        int orientation, uint32_t flags) {
+void SurfaceFlinger::setTransactionState(
+        const Vector<ComposerState>& state,
+        const Vector<DisplayState>& displays,
+        uint32_t flags)
+{
     Mutex::Autolock _l(mStateLock);
-
     uint32_t transactionFlags = 0;
-    if (mCurrentState.orientation != orientation) {
-        if (uint32_t(orientation)<=eOrientation270 || orientation==42) {
-            mCurrentState.orientation = orientation;
-            transactionFlags |= eTransactionNeeded;
-        } else if (orientation != eOrientationUnchanged) {
-            ALOGW("setTransactionState: ignoring unrecognized orientation: %d",
-                    orientation);
-        }
+
+    size_t count = displays.size();
+    for (size_t i=0 ; i<count ; i++) {
+        const DisplayState& s(displays[i]);
+        transactionFlags |= setDisplayStateLocked(s);
     }
 
-    const size_t count = state.size();
+    count = state.size();
     for (size_t i=0 ; i<count ; i++) {
         const ComposerState& s(state[i]);
         sp<Client> client( static_cast<Client *>(s.client.get()) );
@@ -1166,7 +1481,110 @@
     }
 }
 
-sp<ISurface> SurfaceFlinger::createSurface(
+uint32_t SurfaceFlinger::setDisplayStateLocked(const DisplayState& s)
+{
+    uint32_t flags = 0;
+    DisplayDeviceState& disp(mCurrentState.displays.editValueFor(s.token));
+    if (disp.id >= 0) {
+        const uint32_t what = s.what;
+        if (what & DisplayState::eSurfaceChanged) {
+            if (disp.surface->asBinder() != s.surface->asBinder()) {
+                disp.surface = s.surface;
+                flags |= eDisplayTransactionNeeded;
+            }
+        }
+        if (what & DisplayState::eLayerStackChanged) {
+            if (disp.layerStack != s.layerStack) {
+                disp.layerStack = s.layerStack;
+                flags |= eDisplayTransactionNeeded;
+            }
+        }
+        if (what & DisplayState::eOrientationChanged) {
+            if (disp.orientation != s.orientation) {
+                disp.orientation = s.orientation;
+                flags |= eDisplayTransactionNeeded;
+            }
+        }
+        if (what & DisplayState::eFrameChanged) {
+            if (disp.frame != s.frame) {
+                disp.frame = s.frame;
+                flags |= eDisplayTransactionNeeded;
+            }
+        }
+        if (what & DisplayState::eViewportChanged) {
+            if (disp.viewport != s.viewport) {
+                disp.viewport = s.viewport;
+                flags |= eDisplayTransactionNeeded;
+            }
+        }
+    }
+    return flags;
+}
+
+uint32_t SurfaceFlinger::setClientStateLocked(
+        const sp<Client>& client,
+        const layer_state_t& s)
+{
+    uint32_t flags = 0;
+    sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
+    if (layer != 0) {
+        const uint32_t what = s.what;
+        if (what & layer_state_t::ePositionChanged) {
+            if (layer->setPosition(s.x, s.y))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eLayerChanged) {
+            // NOTE: index needs to be calculated before we update the state
+            ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
+            if (layer->setLayer(s.z)) {
+                mCurrentState.layersSortedByZ.removeAt(idx);
+                mCurrentState.layersSortedByZ.add(layer);
+                // we need traversal (state changed)
+                // AND transaction (list changed)
+                flags |= eTransactionNeeded|eTraversalNeeded;
+            }
+        }
+        if (what & layer_state_t::eSizeChanged) {
+            if (layer->setSize(s.w, s.h)) {
+                flags |= eTraversalNeeded;
+            }
+        }
+        if (what & layer_state_t::eAlphaChanged) {
+            if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eMatrixChanged) {
+            if (layer->setMatrix(s.matrix))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eTransparentRegionChanged) {
+            if (layer->setTransparentRegionHint(s.transparentRegion))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eVisibilityChanged) {
+            if (layer->setFlags(s.flags, s.mask))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eCropChanged) {
+            if (layer->setCrop(s.crop))
+                flags |= eTraversalNeeded;
+        }
+        if (what & layer_state_t::eLayerStackChanged) {
+            // NOTE: index needs to be calculated before we update the state
+            ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
+            if (layer->setLayerStack(s.layerStack)) {
+                mCurrentState.layersSortedByZ.removeAt(idx);
+                mCurrentState.layersSortedByZ.add(layer);
+                // we need traversal (state changed)
+                // AND transaction (list changed)
+                flags |= eTransactionNeeded|eTraversalNeeded;
+            }
+        }
+    }
+    return flags;
+}
+
+sp<ISurface> SurfaceFlinger::createLayer(
         ISurfaceComposerClient::surface_data_t* params,
         const String8& name,
         const sp<Client>& client,
@@ -1177,26 +1595,22 @@
     sp<ISurface> surfaceHandle;
 
     if (int32_t(w|h) < 0) {
-        ALOGE("createSurface() failed, w or h is negative (w=%d, h=%d)",
+        ALOGE("createLayer() failed, w or h is negative (w=%d, h=%d)",
                 int(w), int(h));
         return surfaceHandle;
     }
 
-    //ALOGD("createSurface for (%d x %d), name=%s", w, h, name.string());
-    sp<Layer> normalLayer;
-    switch (flags & eFXSurfaceMask) {
-        case eFXSurfaceNormal:
-            normalLayer = createNormalSurface(client, d, w, h, flags, format);
-            layer = normalLayer;
+    //ALOGD("createLayer for (%d x %d), name=%s", w, h, name.string());
+    switch (flags & ISurfaceComposerClient::eFXSurfaceMask) {
+        case ISurfaceComposerClient::eFXSurfaceNormal:
+            layer = createNormalLayer(client, d, w, h, flags, format);
             break;
-        case eFXSurfaceBlur:
-            // for now we treat Blur as Dim, until we can implement it
-            // efficiently.
-        case eFXSurfaceDim:
-            layer = createDimSurface(client, d, w, h, flags);
+        case ISurfaceComposerClient::eFXSurfaceBlur:
+        case ISurfaceComposerClient::eFXSurfaceDim:
+            layer = createDimLayer(client, d, w, h, flags);
             break;
-        case eFXSurfaceScreenshot:
-            layer = createScreenshotSurface(client, d, w, h, flags);
+        case ISurfaceComposerClient::eFXSurfaceScreenshot:
+            layer = createScreenshotLayer(client, d, w, h, flags);
             break;
     }
 
@@ -1204,30 +1618,24 @@
         layer->initStates(w, h, flags);
         layer->setName(name);
         ssize_t token = addClientLayer(client, layer);
-
         surfaceHandle = layer->getSurface();
         if (surfaceHandle != 0) {
             params->token = token;
             params->identity = layer->getIdentity();
-            if (normalLayer != 0) {
-                Mutex::Autolock _l(mStateLock);
-                mLayerMap.add(layer->getSurfaceBinder(), normalLayer);
-            }
         }
-
         setTransactionFlags(eTransactionNeeded);
     }
 
     return surfaceHandle;
 }
 
-sp<Layer> SurfaceFlinger::createNormalSurface(
+sp<Layer> SurfaceFlinger::createNormalLayer(
         const sp<Client>& client, DisplayID display,
         uint32_t w, uint32_t h, uint32_t flags,
         PixelFormat& format)
 {
     // initialize the surfaces
-    switch (format) { // TODO: take h/w into account
+    switch (format) {
     case PIXEL_FORMAT_TRANSPARENT:
     case PIXEL_FORMAT_TRANSLUCENT:
         format = PIXEL_FORMAT_RGBA_8888;
@@ -1249,13 +1657,13 @@
     sp<Layer> layer = new Layer(this, display, client);
     status_t err = layer->setBuffers(w, h, format, flags);
     if (CC_LIKELY(err != NO_ERROR)) {
-        ALOGE("createNormalSurfaceLocked() failed (%s)", strerror(-err));
+        ALOGE("createNormalLayer() failed (%s)", strerror(-err));
         layer.clear();
     }
     return layer;
 }
 
-sp<LayerDim> SurfaceFlinger::createDimSurface(
+sp<LayerDim> SurfaceFlinger::createDimLayer(
         const sp<Client>& client, DisplayID display,
         uint32_t w, uint32_t h, uint32_t flags)
 {
@@ -1263,7 +1671,7 @@
     return layer;
 }
 
-sp<LayerScreenshot> SurfaceFlinger::createScreenshotSurface(
+sp<LayerScreenshot> SurfaceFlinger::createScreenshotLayer(
         const sp<Client>& client, DisplayID display,
         uint32_t w, uint32_t h, uint32_t flags)
 {
@@ -1271,7 +1679,7 @@
     return layer;
 }
 
-status_t SurfaceFlinger::removeSurface(const sp<Client>& client, SurfaceID sid)
+status_t SurfaceFlinger::onLayerRemoved(const sp<Client>& client, SurfaceID sid)
 {
     /*
      * called by the window manager, when a surface should be marked for
@@ -1295,7 +1703,7 @@
     return err;
 }
 
-status_t SurfaceFlinger::destroySurface(const wp<LayerBaseClient>& layer)
+status_t SurfaceFlinger::onLayerDestroyed(const wp<LayerBaseClient>& layer)
 {
     // called by ~ISurface() when all references are gone
     status_t err = NO_ERROR;
@@ -1317,80 +1725,60 @@
     return err;
 }
 
-uint32_t SurfaceFlinger::setClientStateLocked(
-        const sp<Client>& client,
-        const layer_state_t& s)
-{
-    uint32_t flags = 0;
-    sp<LayerBaseClient> layer(client->getLayerUser(s.surface));
-    if (layer != 0) {
-        const uint32_t what = s.what;
-        if (what & ePositionChanged) {
-            if (layer->setPosition(s.x, s.y))
-                flags |= eTraversalNeeded;
-        }
-        if (what & eLayerChanged) {
-            ssize_t idx = mCurrentState.layersSortedByZ.indexOf(layer);
-            if (layer->setLayer(s.z)) {
-                mCurrentState.layersSortedByZ.removeAt(idx);
-                mCurrentState.layersSortedByZ.add(layer);
-                // we need traversal (state changed)
-                // AND transaction (list changed)
-                flags |= eTransactionNeeded|eTraversalNeeded;
-            }
-        }
-        if (what & eSizeChanged) {
-            if (layer->setSize(s.w, s.h)) {
-                flags |= eTraversalNeeded;
-            }
-        }
-        if (what & eAlphaChanged) {
-            if (layer->setAlpha(uint8_t(255.0f*s.alpha+0.5f)))
-                flags |= eTraversalNeeded;
-        }
-        if (what & eMatrixChanged) {
-            if (layer->setMatrix(s.matrix))
-                flags |= eTraversalNeeded;
-        }
-        if (what & eTransparentRegionChanged) {
-            if (layer->setTransparentRegionHint(s.transparentRegion))
-                flags |= eTraversalNeeded;
-        }
-        if (what & eVisibilityChanged) {
-            if (layer->setFlags(s.flags, s.mask))
-                flags |= eTraversalNeeded;
-        }
-        if (what & eCropChanged) {
-            if (layer->setCrop(s.crop))
-                flags |= eTraversalNeeded;
-        }
-    }
-    return flags;
-}
-
 // ---------------------------------------------------------------------------
 
+void SurfaceFlinger::onInitializeDisplays() {
+    // reset screen orientation
+    Vector<ComposerState> state;
+    Vector<DisplayState> displays;
+    DisplayState d;
+    d.what = DisplayState::eOrientationChanged;
+    d.token = mDefaultDisplays[DisplayDevice::DISPLAY_ID_MAIN];
+    d.orientation = DisplayState::eOrientationDefault;
+    displays.add(d);
+    setTransactionState(state, displays, 0);
+
+    // XXX: this should init default device to "unblank" and all other devices to "blank"
+    onScreenAcquired();
+}
+
+void SurfaceFlinger::initializeDisplays() {
+    class MessageScreenInitialized : public MessageBase {
+        SurfaceFlinger* flinger;
+    public:
+        MessageScreenInitialized(SurfaceFlinger* flinger) : flinger(flinger) { }
+        virtual bool handler() {
+            flinger->onInitializeDisplays();
+            return true;
+        }
+    };
+    sp<MessageBase> msg = new MessageScreenInitialized(this);
+    postMessageAsync(msg);  // we may be called from main thread, use async message
+}
+
+
 void SurfaceFlinger::onScreenAcquired() {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    hw.acquireScreen();
+    ALOGD("Screen about to return, flinger = %p", this);
+    sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice
+    getHwComposer().acquire();
+    hw->acquireScreen();
     mEventThread->onScreenAcquired();
-    // this is a temporary work-around, eventually this should be called
-    // by the power-manager
-    SurfaceFlinger::turnElectronBeamOn(mElectronBeamAnimationMode);
-    // from this point on, SF will process updates again
+    mVisibleRegionsDirty = true;
     repaintEverything();
 }
 
 void SurfaceFlinger::onScreenReleased() {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    if (hw.isScreenAcquired()) {
+    ALOGD("About to give-up screen, flinger = %p", this);
+    sp<const DisplayDevice> hw(getDefaultDisplayDevice()); // XXX: this should be per DisplayDevice
+    if (hw->isScreenAcquired()) {
         mEventThread->onScreenReleased();
-        hw.releaseScreen();
+        hw->releaseScreen();
+        getHwComposer().release();
         // from this point on, SF will stop drawing
     }
 }
 
-void SurfaceFlinger::screenAcquired() {
+void SurfaceFlinger::unblank() {
     class MessageScreenAcquired : public MessageBase {
         SurfaceFlinger* flinger;
     public:
@@ -1404,7 +1792,7 @@
     postMessageSync(msg);
 }
 
-void SurfaceFlinger::screenReleased() {
+void SurfaceFlinger::blank() {
     class MessageScreenReleased : public MessageBase {
         SurfaceFlinger* flinger;
     public:
@@ -1575,12 +1963,34 @@
     }
 
     /*
+     * Dump Display state
+     */
+
+    for (size_t dpy=0 ; dpy<mDisplays.size() ; dpy++) {
+        const sp<const DisplayDevice>& hw(mDisplays[dpy]);
+        snprintf(buffer, SIZE,
+                "+ DisplayDevice[%u]\n"
+                "   id=%x, layerStack=%u, (%4dx%4d), orient=%2d, tr=%08x, "
+                "flips=%u, secure=%d, numLayers=%u\n",
+                dpy,
+                hw->getDisplayId(), hw->getLayerStack(),
+                hw->getWidth(), hw->getHeight(),
+                hw->getOrientation(), hw->getTransform().getType(),
+                hw->getPageFlipCount(),
+                hw->getSecureLayerVisible(),
+                hw->getVisibleLayersSortedByZ().size());
+        result.append(buffer);
+    }
+
+    /*
      * Dump SurfaceFlinger global state
      */
 
     snprintf(buffer, SIZE, "SurfaceFlinger global state:\n");
     result.append(buffer);
 
+    HWComposer& hwc(getHwComposer());
+    sp<const DisplayDevice> hw(getDefaultDisplayDevice());
     const GLExtensions& extensions(GLExtensions::getInstance());
     snprintf(buffer, SIZE, "GLES: %s, %s, %s\n",
             extensions.getVendor(),
@@ -1589,18 +1999,16 @@
     result.append(buffer);
 
     snprintf(buffer, SIZE, "EGL : %s\n",
-            eglQueryString(graphicPlane(0).getEGLDisplay(),
-                    EGL_VERSION_HW_ANDROID));
+            eglQueryString(mEGLDisplay, EGL_VERSION_HW_ANDROID));
     result.append(buffer);
 
     snprintf(buffer, SIZE, "EXTS: %s\n", extensions.getExtension());
     result.append(buffer);
 
-    mWormholeRegion.dump(result, "WormholeRegion");
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
+    hw->undefinedRegion.dump(result, "undefinedRegion");
     snprintf(buffer, SIZE,
             "  orientation=%d, canDraw=%d\n",
-            mCurrentState.orientation, hw.canDraw());
+            hw->getOrientation(), hw->canDraw());
     result.append(buffer);
     snprintf(buffer, SIZE,
             "  last eglSwapBuffers() time: %f us\n"
@@ -1608,15 +2016,13 @@
             "  transaction-flags         : %08x\n"
             "  refresh-rate              : %f fps\n"
             "  x-dpi                     : %f\n"
-            "  y-dpi                     : %f\n"
-            "  density                   : %f\n",
+            "  y-dpi                     : %f\n",
             mLastSwapBufferTime/1000.0,
             mLastTransactionTime/1000.0,
             mTransactionFlags,
-            hw.getRefreshRate(),
-            hw.getDpiX(),
-            hw.getDpiY(),
-            hw.getDensity());
+            1e9 / hwc.getRefreshPeriod(),
+            hwc.getDpiX(),
+            hwc.getDpiY());
     result.append(buffer);
 
     snprintf(buffer, SIZE, "  eglSwapBuffers time: %f us\n",
@@ -1635,21 +2041,20 @@
     /*
      * Dump HWComposer state
      */
-    HWComposer& hwc(hw.getHwComposer());
     snprintf(buffer, SIZE, "h/w composer state:\n");
     result.append(buffer);
     snprintf(buffer, SIZE, "  h/w composer %s and %s\n",
             hwc.initCheck()==NO_ERROR ? "present" : "not present",
                     (mDebugDisableHWC || mDebugRegion) ? "disabled" : "enabled");
     result.append(buffer);
-    hwc.dump(result, buffer, SIZE, mVisibleLayersSortedByZ);
+    hwc.dump(result, buffer, SIZE, hw->getVisibleLayersSortedByZ());
 
     /*
      * Dump gralloc state
      */
     const GraphicBufferAllocator& alloc(GraphicBufferAllocator::get());
     alloc.dump(result);
-    hw.dump(result);
+    hw->dump(result);
 }
 
 status_t SurfaceFlinger::onTransact(
@@ -1658,10 +2063,9 @@
     switch (code) {
         case CREATE_CONNECTION:
         case SET_TRANSACTION_STATE:
-        case SET_ORIENTATION:
         case BOOT_FINISHED:
-        case TURN_ELECTRON_BEAM_OFF:
-        case TURN_ELECTRON_BEAM_ON:
+        case BLANK:
+        case UNBLANK:
         {
             // codes that require permission check
             IPCThreadState* ipc = IPCThreadState::self();
@@ -1718,7 +2122,10 @@
                 return NO_ERROR;
             }
             case 1005:{ // force transaction
-                setTransactionFlags(eTransactionNeeded|eTraversalNeeded);
+                setTransactionFlags(
+                        eTransactionNeeded|
+                        eDisplayTransactionNeeded|
+                        eTraversalNeeded);
                 return NO_ERROR;
             }
             case 1006:{ // send empty update
@@ -1746,8 +2153,8 @@
                 return NO_ERROR;
             case 1013: {
                 Mutex::Autolock _l(mStateLock);
-                const DisplayHardware& hw(graphicPlane(0).displayHardware());
-                reply->writeInt32(hw.getPageFlipCount());
+                sp<const DisplayDevice> hw(getDefaultDisplayDevice());
+                reply->writeInt32(hw->getPageFlipCount());
             }
             return NO_ERROR;
         }
@@ -1756,24 +2163,10 @@
 }
 
 void SurfaceFlinger::repaintEverything() {
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const Rect bounds(hw.getBounds());
-    setInvalidateRegion(Region(bounds));
+    android_atomic_or(1, &mRepaintEverything);
     signalTransaction();
 }
 
-void SurfaceFlinger::setInvalidateRegion(const Region& reg) {
-    Mutex::Autolock _l(mInvalidateLock);
-    mInvalidateRegion = reg;
-}
-
-Region SurfaceFlinger::getAndClearInvalidateRegion() {
-    Mutex::Autolock _l(mInvalidateLock);
-    Region reg(mInvalidateRegion);
-    mInvalidateRegion.clear();
-    return reg;
-}
-
 // ---------------------------------------------------------------------------
 
 status_t SurfaceFlinger::renderScreenToTexture(DisplayID dpy,
@@ -1792,9 +2185,9 @@
         return INVALID_OPERATION;
 
     // get screen geometry
-    const DisplayHardware& hw(graphicPlane(dpy).displayHardware());
-    const uint32_t hw_w = hw.getWidth();
-    const uint32_t hw_h = hw.getHeight();
+    sp<const DisplayDevice> hw(getDisplayDevice(dpy));
+    const uint32_t hw_w = hw->getWidth();
+    const uint32_t hw_h = hw->getHeight();
     GLfloat u = 1;
     GLfloat v = 1;
 
@@ -1830,14 +2223,14 @@
     glClear(GL_COLOR_BUFFER_BIT);
     glMatrixMode(GL_MODELVIEW);
     glLoadIdentity();
-    const Vector< sp<LayerBase> >& layers(mVisibleLayersSortedByZ);
+    const Vector< sp<LayerBase> >& layers(hw->getVisibleLayersSortedByZ());
     const size_t count = layers.size();
     for (size_t i=0 ; i<count ; ++i) {
         const sp<LayerBase>& layer(layers[i]);
-        layer->drawForSreenShot();
+        layer->draw(hw);
     }
 
-    hw.compositionComplete();
+    hw->compositionComplete();
 
     // back to main framebuffer
     glBindFramebufferOES(GL_FRAMEBUFFER_OES, 0);
@@ -1851,472 +2244,7 @@
 
 // ---------------------------------------------------------------------------
 
-class VSyncWaiter {
-    DisplayEventReceiver::Event buffer[4];
-    sp<Looper> looper;
-    sp<IDisplayEventConnection> events;
-    sp<BitTube> eventTube;
-public:
-    VSyncWaiter(const sp<EventThread>& eventThread) {
-        looper = new Looper(true);
-        events = eventThread->createEventConnection();
-        eventTube = events->getDataChannel();
-        looper->addFd(eventTube->getFd(), 0, ALOOPER_EVENT_INPUT, 0, 0);
-        events->requestNextVsync();
-    }
-
-    void wait() {
-        ssize_t n;
-
-        looper->pollOnce(-1);
-        // we don't handle any errors here, it doesn't matter
-        // and we don't want to take the risk to get stuck.
-
-        // drain the events...
-        while ((n = DisplayEventReceiver::getEvents(
-                eventTube, buffer, 4)) > 0) ;
-
-        events->requestNextVsync();
-    }
-};
-
-status_t SurfaceFlinger::electronBeamOffAnimationImplLocked()
-{
-    // get screen geometry
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t hw_w = hw.getWidth();
-    const uint32_t hw_h = hw.getHeight();
-    const Region screenBounds(hw.getBounds());
-
-    GLfloat u, v;
-    GLuint tname;
-    status_t result = renderScreenToTextureLocked(0, &tname, &u, &v);
-    if (result != NO_ERROR) {
-        return result;
-    }
-
-    GLfloat vtx[8];
-    const GLfloat texCoords[4][2] = { {0,0}, {0,v}, {u,v}, {u,0} };
-    glBindTexture(GL_TEXTURE_2D, tname);
-    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
-    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    glVertexPointer(2, GL_FLOAT, 0, vtx);
-
-    /*
-     * Texture coordinate mapping
-     *
-     *                 u
-     *    1 +----------+---+
-     *      |     |    |   |  image is inverted
-     *      |     V    |   |  w.r.t. the texture
-     *  1-v +----------+   |  coordinates
-     *      |              |
-     *      |              |
-     *      |              |
-     *    0 +--------------+
-     *      0              1
-     *
-     */
-
-    class s_curve_interpolator {
-        const float nbFrames, s, v;
-    public:
-        s_curve_interpolator(int nbFrames, float s)
-        : nbFrames(1.0f / (nbFrames-1)), s(s),
-          v(1.0f + expf(-s + 0.5f*s)) {
-        }
-        float operator()(int f) {
-            const float x = f * nbFrames;
-            return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f;
-        }
-    };
-
-    class v_stretch {
-        const GLfloat hw_w, hw_h;
-    public:
-        v_stretch(uint32_t hw_w, uint32_t hw_h)
-        : hw_w(hw_w), hw_h(hw_h) {
-        }
-        void operator()(GLfloat* vtx, float v) {
-            const GLfloat w = hw_w + (hw_w * v);
-            const GLfloat h = hw_h - (hw_h * v);
-            const GLfloat x = (hw_w - w) * 0.5f;
-            const GLfloat y = (hw_h - h) * 0.5f;
-            vtx[0] = x;         vtx[1] = y;
-            vtx[2] = x;         vtx[3] = y + h;
-            vtx[4] = x + w;     vtx[5] = y + h;
-            vtx[6] = x + w;     vtx[7] = y;
-        }
-    };
-
-    class h_stretch {
-        const GLfloat hw_w, hw_h;
-    public:
-        h_stretch(uint32_t hw_w, uint32_t hw_h)
-        : hw_w(hw_w), hw_h(hw_h) {
-        }
-        void operator()(GLfloat* vtx, float v) {
-            const GLfloat w = hw_w - (hw_w * v);
-            const GLfloat h = 1.0f;
-            const GLfloat x = (hw_w - w) * 0.5f;
-            const GLfloat y = (hw_h - h) * 0.5f;
-            vtx[0] = x;         vtx[1] = y;
-            vtx[2] = x;         vtx[3] = y + h;
-            vtx[4] = x + w;     vtx[5] = y + h;
-            vtx[6] = x + w;     vtx[7] = y;
-        }
-    };
-
-    VSyncWaiter vsync(mEventThread);
-
-    // the full animation is 24 frames
-    char value[PROPERTY_VALUE_MAX];
-    property_get("debug.sf.electron_frames", value, "24");
-    int nbFrames = (atoi(value) + 1) >> 1;
-    if (nbFrames <= 0) // just in case
-        nbFrames = 24;
-
-    s_curve_interpolator itr(nbFrames, 7.5f);
-    s_curve_interpolator itg(nbFrames, 8.0f);
-    s_curve_interpolator itb(nbFrames, 8.5f);
-
-    v_stretch vverts(hw_w, hw_h);
-
-    glMatrixMode(GL_TEXTURE);
-    glLoadIdentity();
-    glMatrixMode(GL_MODELVIEW);
-    glLoadIdentity();
-
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_ONE, GL_ONE);
-    for (int i=0 ; i<nbFrames ; i++) {
-        float x, y, w, h;
-        const float vr = itr(i);
-        const float vg = itg(i);
-        const float vb = itb(i);
-
-        // wait for vsync
-        vsync.wait();
-
-        // clear screen
-        glColorMask(1,1,1,1);
-        glClear(GL_COLOR_BUFFER_BIT);
-        glEnable(GL_TEXTURE_2D);
-
-        // draw the red plane
-        vverts(vtx, vr);
-        glColorMask(1,0,0,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        // draw the green plane
-        vverts(vtx, vg);
-        glColorMask(0,1,0,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        // draw the blue plane
-        vverts(vtx, vb);
-        glColorMask(0,0,1,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        // draw the white highlight (we use the last vertices)
-        glDisable(GL_TEXTURE_2D);
-        glColorMask(1,1,1,1);
-        glColor4f(vg, vg, vg, 1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-        hw.flip(screenBounds);
-    }
-
-    h_stretch hverts(hw_w, hw_h);
-    glDisable(GL_BLEND);
-    glDisable(GL_TEXTURE_2D);
-    glColorMask(1,1,1,1);
-    for (int i=0 ; i<nbFrames ; i++) {
-        const float v = itg(i);
-        hverts(vtx, v);
-
-        // wait for vsync
-        vsync.wait();
-
-        glClear(GL_COLOR_BUFFER_BIT);
-        glColor4f(1-v, 1-v, 1-v, 1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-        hw.flip(screenBounds);
-    }
-
-    glColorMask(1,1,1,1);
-    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-    glDeleteTextures(1, &tname);
-    glDisable(GL_TEXTURE_2D);
-    glDisable(GL_BLEND);
-    return NO_ERROR;
-}
-
-status_t SurfaceFlinger::electronBeamOnAnimationImplLocked()
-{
-    status_t result = PERMISSION_DENIED;
-
-    if (!GLExtensions::getInstance().haveFramebufferObject())
-        return INVALID_OPERATION;
-
-
-    // get screen geometry
-    const DisplayHardware& hw(graphicPlane(0).displayHardware());
-    const uint32_t hw_w = hw.getWidth();
-    const uint32_t hw_h = hw.getHeight();
-    const Region screenBounds(hw.bounds());
-
-    GLfloat u, v;
-    GLuint tname;
-    result = renderScreenToTextureLocked(0, &tname, &u, &v);
-    if (result != NO_ERROR) {
-        return result;
-    }
-
-    GLfloat vtx[8];
-    const GLfloat texCoords[4][2] = { {0,v}, {0,0}, {u,0}, {u,v} };
-    glBindTexture(GL_TEXTURE_2D, tname);
-    glTexEnvx(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-    glTexParameterx(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-    glTexCoordPointer(2, GL_FLOAT, 0, texCoords);
-    glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-    glVertexPointer(2, GL_FLOAT, 0, vtx);
-
-    class s_curve_interpolator {
-        const float nbFrames, s, v;
-    public:
-        s_curve_interpolator(int nbFrames, float s)
-        : nbFrames(1.0f / (nbFrames-1)), s(s),
-          v(1.0f + expf(-s + 0.5f*s)) {
-        }
-        float operator()(int f) {
-            const float x = f * nbFrames;
-            return ((1.0f/(1.0f + expf(-x*s + 0.5f*s))) - 0.5f) * v + 0.5f;
-        }
-    };
-
-    class v_stretch {
-        const GLfloat hw_w, hw_h;
-    public:
-        v_stretch(uint32_t hw_w, uint32_t hw_h)
-        : hw_w(hw_w), hw_h(hw_h) {
-        }
-        void operator()(GLfloat* vtx, float v) {
-            const GLfloat w = hw_w + (hw_w * v);
-            const GLfloat h = hw_h - (hw_h * v);
-            const GLfloat x = (hw_w - w) * 0.5f;
-            const GLfloat y = (hw_h - h) * 0.5f;
-            vtx[0] = x;         vtx[1] = y;
-            vtx[2] = x;         vtx[3] = y + h;
-            vtx[4] = x + w;     vtx[5] = y + h;
-            vtx[6] = x + w;     vtx[7] = y;
-        }
-    };
-
-    class h_stretch {
-        const GLfloat hw_w, hw_h;
-    public:
-        h_stretch(uint32_t hw_w, uint32_t hw_h)
-        : hw_w(hw_w), hw_h(hw_h) {
-        }
-        void operator()(GLfloat* vtx, float v) {
-            const GLfloat w = hw_w - (hw_w * v);
-            const GLfloat h = 1.0f;
-            const GLfloat x = (hw_w - w) * 0.5f;
-            const GLfloat y = (hw_h - h) * 0.5f;
-            vtx[0] = x;         vtx[1] = y;
-            vtx[2] = x;         vtx[3] = y + h;
-            vtx[4] = x + w;     vtx[5] = y + h;
-            vtx[6] = x + w;     vtx[7] = y;
-        }
-    };
-
-    VSyncWaiter vsync(mEventThread);
-
-    // the full animation is 12 frames
-    int nbFrames = 8;
-    s_curve_interpolator itr(nbFrames, 7.5f);
-    s_curve_interpolator itg(nbFrames, 8.0f);
-    s_curve_interpolator itb(nbFrames, 8.5f);
-
-    h_stretch hverts(hw_w, hw_h);
-    glDisable(GL_BLEND);
-    glDisable(GL_TEXTURE_2D);
-    glColorMask(1,1,1,1);
-    for (int i=nbFrames-1 ; i>=0 ; i--) {
-        const float v = itg(i);
-        hverts(vtx, v);
-
-        // wait for vsync
-        vsync.wait();
-
-        glClear(GL_COLOR_BUFFER_BIT);
-        glColor4f(1-v, 1-v, 1-v, 1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-        hw.flip(screenBounds);
-    }
-
-    nbFrames = 4;
-    v_stretch vverts(hw_w, hw_h);
-    glEnable(GL_BLEND);
-    glBlendFunc(GL_ONE, GL_ONE);
-    for (int i=nbFrames-1 ; i>=0 ; i--) {
-        float x, y, w, h;
-        const float vr = itr(i);
-        const float vg = itg(i);
-        const float vb = itb(i);
-
-        // wait for vsync
-        vsync.wait();
-
-        // clear screen
-        glColorMask(1,1,1,1);
-        glClear(GL_COLOR_BUFFER_BIT);
-        glEnable(GL_TEXTURE_2D);
-
-        // draw the red plane
-        vverts(vtx, vr);
-        glColorMask(1,0,0,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        // draw the green plane
-        vverts(vtx, vg);
-        glColorMask(0,1,0,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        // draw the blue plane
-        vverts(vtx, vb);
-        glColorMask(0,0,1,1);
-        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
-
-        hw.flip(screenBounds);
-    }
-
-    glColorMask(1,1,1,1);
-    glDisableClientState(GL_TEXTURE_COORD_ARRAY);
-    glDeleteTextures(1, &tname);
-    glDisable(GL_TEXTURE_2D);
-    glDisable(GL_BLEND);
-
-    return NO_ERROR;
-}
-
-// ---------------------------------------------------------------------------
-
-status_t SurfaceFlinger::turnElectronBeamOffImplLocked(int32_t mode)
-{
-    ATRACE_CALL();
-
-    DisplayHardware& hw(graphicPlane(0).editDisplayHardware());
-    if (!hw.canDraw()) {
-        // we're already off
-        return NO_ERROR;
-    }
-
-    // turn off hwc while we're doing the animation
-    hw.getHwComposer().disable();
-    // and make sure to turn it back on (if needed) next time we compose
-    invalidateHwcGeometry();
-
-    if (mode & ISurfaceComposer::eElectronBeamAnimationOff) {
-        electronBeamOffAnimationImplLocked();
-    }
-
-    // always clear the whole screen at the end of the animation
-    glClearColor(0,0,0,1);
-    glClear(GL_COLOR_BUFFER_BIT);
-    hw.flip( Region(hw.bounds()) );
-
-    return NO_ERROR;
-}
-
-status_t SurfaceFlinger::turnElectronBeamOff(int32_t mode)
-{
-    class MessageTurnElectronBeamOff : public MessageBase {
-        SurfaceFlinger* flinger;
-        int32_t mode;
-        status_t result;
-    public:
-        MessageTurnElectronBeamOff(SurfaceFlinger* flinger, int32_t mode)
-            : flinger(flinger), mode(mode), result(PERMISSION_DENIED) {
-        }
-        status_t getResult() const {
-            return result;
-        }
-        virtual bool handler() {
-            Mutex::Autolock _l(flinger->mStateLock);
-            result = flinger->turnElectronBeamOffImplLocked(mode);
-            return true;
-        }
-    };
-
-    sp<MessageBase> msg = new MessageTurnElectronBeamOff(this, mode);
-    status_t res = postMessageSync(msg);
-    if (res == NO_ERROR) {
-        res = static_cast<MessageTurnElectronBeamOff*>( msg.get() )->getResult();
-
-        // work-around: when the power-manager calls us we activate the
-        // animation. eventually, the "on" animation will be called
-        // by the power-manager itself
-        mElectronBeamAnimationMode = mode;
-    }
-    return res;
-}
-
-// ---------------------------------------------------------------------------
-
-status_t SurfaceFlinger::turnElectronBeamOnImplLocked(int32_t mode)
-{
-    DisplayHardware& hw(graphicPlane(0).editDisplayHardware());
-    if (hw.canDraw()) {
-        // we're already on
-        return NO_ERROR;
-    }
-    if (mode & ISurfaceComposer::eElectronBeamAnimationOn) {
-        electronBeamOnAnimationImplLocked();
-    }
-
-    // make sure to redraw the whole screen when the animation is done
-    mDirtyRegion.set(hw.bounds());
-    signalTransaction();
-
-    return NO_ERROR;
-}
-
-status_t SurfaceFlinger::turnElectronBeamOn(int32_t mode)
-{
-    class MessageTurnElectronBeamOn : public MessageBase {
-        SurfaceFlinger* flinger;
-        int32_t mode;
-        status_t result;
-    public:
-        MessageTurnElectronBeamOn(SurfaceFlinger* flinger, int32_t mode)
-            : flinger(flinger), mode(mode), result(PERMISSION_DENIED) {
-        }
-        status_t getResult() const {
-            return result;
-        }
-        virtual bool handler() {
-            Mutex::Autolock _l(flinger->mStateLock);
-            result = flinger->turnElectronBeamOnImplLocked(mode);
-            return true;
-        }
-    };
-
-    postMessageAsync( new MessageTurnElectronBeamOn(this, mode) );
-    return NO_ERROR;
-}
-
-// ---------------------------------------------------------------------------
-
-status_t SurfaceFlinger::captureScreenImplLocked(DisplayID dpy,
+status_t SurfaceFlinger::captureScreenImplLocked(const sp<IBinder>& display,
         sp<IMemoryHeap>* heap,
         uint32_t* w, uint32_t* h, PixelFormat* f,
         uint32_t sw, uint32_t sh,
@@ -2326,27 +2254,38 @@
 
     status_t result = PERMISSION_DENIED;
 
-    // only one display supported for now
-    if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
+    const DisplayDeviceState& disp(mDrawingState.displays.valueFor(display));
+    if (CC_UNLIKELY(disp.id < 0)) {
         return BAD_VALUE;
+    }
 
-    if (!GLExtensions::getInstance().haveFramebufferObject())
+    if (!GLExtensions::getInstance().haveFramebufferObject()) {
         return INVALID_OPERATION;
+    }
 
     // get screen geometry
-    const DisplayHardware& hw(graphicPlane(dpy).displayHardware());
-    const uint32_t hw_w = hw.getWidth();
-    const uint32_t hw_h = hw.getHeight();
+    sp<const DisplayDevice> hw(getDisplayDevice(disp.id));
+    const uint32_t hw_w = hw->getWidth();
+    const uint32_t hw_h = hw->getHeight();
 
-    if ((sw > hw_w) || (sh > hw_h))
+    // if we have secure windows on this display, never allow the screen capture
+    if (hw->getSecureLayerVisible()) {
+        ALOGW("FB is protected: PERMISSION_DENIED");
+        return PERMISSION_DENIED;
+    }
+
+    if ((sw > hw_w) || (sh > hw_h)) {
+        ALOGE("size mismatch (%d, %d) > (%d, %d)", sw, sh, hw_w, hw_h);
         return BAD_VALUE;
+    }
 
     sw = (!sw) ? hw_w : sw;
     sh = (!sh) ? hw_h : sh;
     const size_t size = sw * sh * 4;
+    const bool filtering = sw != hw_w || sh != hw_h;
 
-    //ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d",
-    //        sw, sh, minLayerZ, maxLayerZ);
+//    ALOGD("screenshot: sw=%d, sh=%d, minZ=%d, maxZ=%d",
+//            sw, sh, minLayerZ, maxLayerZ);
 
     // make sure to clear all GL error flags
     while ( glGetError() != GL_NO_ERROR ) ;
@@ -2378,15 +2317,18 @@
         glClearColor(0,0,0,1);
         glClear(GL_COLOR_BUFFER_BIT);
 
+        // TODO: filter the layers that are drawn based on the layer stack of the display.
         const LayerVector& layers(mDrawingState.layersSortedByZ);
         const size_t count = layers.size();
         for (size_t i=0 ; i<count ; ++i) {
             const sp<LayerBase>& layer(layers[i]);
             const uint32_t flags = layer->drawingState().flags;
-            if (!(flags & ISurfaceComposer::eLayerHidden)) {
+            if (!(flags & layer_state_t::eLayerHidden)) {
                 const uint32_t z = layer->drawingState().z;
                 if (z >= minLayerZ && z <= maxLayerZ) {
-                    layer->drawForSreenShot();
+                    if (filtering) layer->setFiltering(true);
+                    layer->draw(hw);
+                    if (filtering) layer->setFiltering(false);
                 }
             }
         }
@@ -2429,22 +2371,21 @@
     glDeleteRenderbuffersOES(1, &tname);
     glDeleteFramebuffersOES(1, &name);
 
-    hw.compositionComplete();
+    hw->compositionComplete();
 
-    // ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK");
+//    ALOGD("screenshot: result = %s", result<0 ? strerror(result) : "OK");
 
     return result;
 }
 
 
-status_t SurfaceFlinger::captureScreen(DisplayID dpy,
+status_t SurfaceFlinger::captureScreen(const sp<IBinder>& display,
         sp<IMemoryHeap>* heap,
         uint32_t* width, uint32_t* height, PixelFormat* format,
         uint32_t sw, uint32_t sh,
         uint32_t minLayerZ, uint32_t maxLayerZ)
 {
-    // only one display supported for now
-    if (CC_UNLIKELY(uint32_t(dpy) >= DISPLAY_COUNT))
+    if (CC_UNLIKELY(display == 0))
         return BAD_VALUE;
 
     if (!GLExtensions::getInstance().haveFramebufferObject())
@@ -2452,7 +2393,7 @@
 
     class MessageCaptureScreen : public MessageBase {
         SurfaceFlinger* flinger;
-        DisplayID dpy;
+        sp<IBinder> display;
         sp<IMemoryHeap>* heap;
         uint32_t* w;
         uint32_t* h;
@@ -2463,11 +2404,11 @@
         uint32_t maxLayerZ;
         status_t result;
     public:
-        MessageCaptureScreen(SurfaceFlinger* flinger, DisplayID dpy,
+        MessageCaptureScreen(SurfaceFlinger* flinger, const sp<IBinder>& display,
                 sp<IMemoryHeap>* heap, uint32_t* w, uint32_t* h, PixelFormat* f,
                 uint32_t sw, uint32_t sh,
                 uint32_t minLayerZ, uint32_t maxLayerZ)
-            : flinger(flinger), dpy(dpy),
+            : flinger(flinger), display(display),
               heap(heap), w(w), h(h), f(f), sw(sw), sh(sh),
               minLayerZ(minLayerZ), maxLayerZ(maxLayerZ),
               result(PERMISSION_DENIED)
@@ -2478,20 +2419,14 @@
         }
         virtual bool handler() {
             Mutex::Autolock _l(flinger->mStateLock);
-
-            // if we have secure windows, never allow the screen capture
-            if (flinger->mSecureFrameBuffer)
-                return true;
-
-            result = flinger->captureScreenImplLocked(dpy,
+            result = flinger->captureScreenImplLocked(display,
                     heap, w, h, f, sw, sh, minLayerZ, maxLayerZ);
-
             return true;
         }
     };
 
     sp<MessageBase> msg = new MessageCaptureScreen(this,
-            dpy, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ);
+            display, heap, width, height, format, sw, sh, minLayerZ, maxLayerZ);
     status_t res = postMessageSync(msg);
     if (res == NO_ERROR) {
         res = static_cast<MessageCaptureScreen*>( msg.get() )->getResult();
@@ -2501,136 +2436,40 @@
 
 // ---------------------------------------------------------------------------
 
-sp<Layer> SurfaceFlinger::getLayer(const sp<ISurface>& sur) const
+SurfaceFlinger::LayerVector::LayerVector() {
+}
+
+SurfaceFlinger::LayerVector::LayerVector(const LayerVector& rhs)
+    : SortedVector<sp<LayerBase> >(rhs) {
+}
+
+int SurfaceFlinger::LayerVector::do_compare(const void* lhs,
+    const void* rhs) const
 {
-    sp<Layer> result;
-    Mutex::Autolock _l(mStateLock);
-    result = mLayerMap.valueFor( sur->asBinder() ).promote();
-    return result;
+    // sort layers per layer-stack, then by z-order and finally by sequence
+    const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs));
+    const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs));
+
+    uint32_t ls = l->currentState().layerStack;
+    uint32_t rs = r->currentState().layerStack;
+    if (ls != rs)
+        return ls - rs;
+
+    uint32_t lz = l->currentState().z;
+    uint32_t rz = r->currentState().z;
+    if (lz != rz)
+        return lz - rz;
+
+    return l->sequence - r->sequence;
 }
 
 // ---------------------------------------------------------------------------
 
-Client::Client(const sp<SurfaceFlinger>& flinger)
-    : mFlinger(flinger), mNameGenerator(1)
-{
+SurfaceFlinger::DisplayDeviceState::DisplayDeviceState() : id(-1) {
 }
 
-Client::~Client()
-{
-    const size_t count = mLayers.size();
-    for (size_t i=0 ; i<count ; i++) {
-        sp<LayerBaseClient> layer(mLayers.valueAt(i).promote());
-        if (layer != 0) {
-            mFlinger->removeLayer(layer);
-        }
-    }
-}
-
-status_t Client::initCheck() const {
-    return NO_ERROR;
-}
-
-size_t Client::attachLayer(const sp<LayerBaseClient>& layer)
-{
-    Mutex::Autolock _l(mLock);
-    size_t name = mNameGenerator++;
-    mLayers.add(name, layer);
-    return name;
-}
-
-void Client::detachLayer(const LayerBaseClient* layer)
-{
-    Mutex::Autolock _l(mLock);
-    // we do a linear search here, because this doesn't happen often
-    const size_t count = mLayers.size();
-    for (size_t i=0 ; i<count ; i++) {
-        if (mLayers.valueAt(i) == layer) {
-            mLayers.removeItemsAt(i, 1);
-            break;
-        }
-    }
-}
-sp<LayerBaseClient> Client::getLayerUser(int32_t i) const
-{
-    Mutex::Autolock _l(mLock);
-    sp<LayerBaseClient> lbc;
-    wp<LayerBaseClient> layer(mLayers.valueFor(i));
-    if (layer != 0) {
-        lbc = layer.promote();
-        ALOGE_IF(lbc==0, "getLayerUser(name=%d) is dead", int(i));
-    }
-    return lbc;
-}
-
-
-status_t Client::onTransact(
-    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
-{
-    // these must be checked
-     IPCThreadState* ipc = IPCThreadState::self();
-     const int pid = ipc->getCallingPid();
-     const int uid = ipc->getCallingUid();
-     const int self_pid = getpid();
-     if (CC_UNLIKELY(pid != self_pid && uid != AID_GRAPHICS && uid != 0)) {
-         // we're called from a different process, do the real check
-         if (!PermissionCache::checkCallingPermission(sAccessSurfaceFlinger))
-         {
-             ALOGE("Permission Denial: "
-                     "can't openGlobalTransaction pid=%d, uid=%d", pid, uid);
-             return PERMISSION_DENIED;
-         }
-     }
-     return BnSurfaceComposerClient::onTransact(code, data, reply, flags);
-}
-
-
-sp<ISurface> Client::createSurface(
-        ISurfaceComposerClient::surface_data_t* params,
-        const String8& name,
-        DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
-        uint32_t flags)
-{
-    /*
-     * createSurface must be called from the GL thread so that it can
-     * have access to the GL context.
-     */
-
-    class MessageCreateSurface : public MessageBase {
-        sp<ISurface> result;
-        SurfaceFlinger* flinger;
-        ISurfaceComposerClient::surface_data_t* params;
-        Client* client;
-        const String8& name;
-        DisplayID display;
-        uint32_t w, h;
-        PixelFormat format;
-        uint32_t flags;
-    public:
-        MessageCreateSurface(SurfaceFlinger* flinger,
-                ISurfaceComposerClient::surface_data_t* params,
-                const String8& name, Client* client,
-                DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
-                uint32_t flags)
-            : flinger(flinger), params(params), client(client), name(name),
-              display(display), w(w), h(h), format(format), flags(flags)
-        {
-        }
-        sp<ISurface> getResult() const { return result; }
-        virtual bool handler() {
-            result = flinger->createSurface(params, name, client,
-                    display, w, h, format, flags);
-            return true;
-        }
-    };
-
-    sp<MessageBase> msg = new MessageCreateSurface(mFlinger.get(),
-            params, name, this, display, w, h, format, flags);
-    mFlinger->postMessageSync(msg);
-    return static_cast<MessageCreateSurface*>( msg.get() )->getResult();
-}
-status_t Client::destroySurface(SurfaceID sid) {
-    return mFlinger->removeSurface(this, sid);
+SurfaceFlinger::DisplayDeviceState::DisplayDeviceState(int32_t id)
+    : id(id), layerStack(0), orientation(0) {
 }
 
 // ---------------------------------------------------------------------------
@@ -2658,126 +2497,4 @@
 
 // ---------------------------------------------------------------------------
 
-GraphicPlane::GraphicPlane()
-    : mHw(0)
-{
-}
-
-GraphicPlane::~GraphicPlane() {
-    delete mHw;
-}
-
-bool GraphicPlane::initialized() const {
-    return mHw ? true : false;
-}
-
-int GraphicPlane::getWidth() const {
-    return mWidth;
-}
-
-int GraphicPlane::getHeight() const {
-    return mHeight;
-}
-
-void GraphicPlane::setDisplayHardware(DisplayHardware *hw)
-{
-    mHw = hw;
-
-    // initialize the display orientation transform.
-    // it's a constant that should come from the display driver.
-    int displayOrientation = ISurfaceComposer::eOrientationDefault;
-    char property[PROPERTY_VALUE_MAX];
-    if (property_get("ro.sf.hwrotation", property, NULL) > 0) {
-        //displayOrientation
-        switch (atoi(property)) {
-        case 90:
-            displayOrientation = ISurfaceComposer::eOrientation90;
-            break;
-        case 270:
-            displayOrientation = ISurfaceComposer::eOrientation270;
-            break;
-        }
-    }
-
-    const float w = hw->getWidth();
-    const float h = hw->getHeight();
-    GraphicPlane::orientationToTransfrom(displayOrientation, w, h,
-            &mDisplayTransform);
-    if (displayOrientation & ISurfaceComposer::eOrientationSwapMask) {
-        mDisplayWidth = h;
-        mDisplayHeight = w;
-    } else {
-        mDisplayWidth = w;
-        mDisplayHeight = h;
-    }
-
-    setOrientation(ISurfaceComposer::eOrientationDefault);
-}
-
-status_t GraphicPlane::orientationToTransfrom(
-        int orientation, int w, int h, Transform* tr)
-{
-    uint32_t flags = 0;
-    switch (orientation) {
-    case ISurfaceComposer::eOrientationDefault:
-        flags = Transform::ROT_0;
-        break;
-    case ISurfaceComposer::eOrientation90:
-        flags = Transform::ROT_90;
-        break;
-    case ISurfaceComposer::eOrientation180:
-        flags = Transform::ROT_180;
-        break;
-    case ISurfaceComposer::eOrientation270:
-        flags = Transform::ROT_270;
-        break;
-    default:
-        return BAD_VALUE;
-    }
-    tr->set(flags, w, h);
-    return NO_ERROR;
-}
-
-status_t GraphicPlane::setOrientation(int orientation)
-{
-    // If the rotation can be handled in hardware, this is where
-    // the magic should happen.
-
-    const DisplayHardware& hw(displayHardware());
-    const float w = mDisplayWidth;
-    const float h = mDisplayHeight;
-    mWidth = int(w);
-    mHeight = int(h);
-
-    Transform orientationTransform;
-    GraphicPlane::orientationToTransfrom(orientation, w, h,
-            &orientationTransform);
-    if (orientation & ISurfaceComposer::eOrientationSwapMask) {
-        mWidth = int(h);
-        mHeight = int(w);
-    }
-
-    mOrientation = orientation;
-    mGlobalTransform = mDisplayTransform * orientationTransform;
-    return NO_ERROR;
-}
-
-const DisplayHardware& GraphicPlane::displayHardware() const {
-    return *mHw;
-}
-
-DisplayHardware& GraphicPlane::editDisplayHardware() {
-    return *mHw;
-}
-
-const Transform& GraphicPlane::transform() const {
-    return mGlobalTransform;
-}
-
-EGLDisplay GraphicPlane::getEGLDisplay() const {
-    return mHw->getEGLDisplay();
-}
-
-// ---------------------------------------------------------------------------
-
 }; // namespace android
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index b20973b..653a631 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -20,6 +20,9 @@
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <EGL/egl.h>
+#include <GLES/gl.h>
+
 #include <cutils/compiler.h>
 
 #include <utils/Atomic.h>
@@ -33,66 +36,38 @@
 #include <binder/IMemory.h>
 
 #include <ui/PixelFormat.h>
+
 #include <gui/IGraphicBufferAlloc.h>
 #include <gui/ISurfaceComposer.h>
 #include <gui/ISurfaceComposerClient.h>
 
-#include "Barrier.h"
-#include "Layer.h"
+#include <hardware/hwcomposer_defs.h>
 
+#include <private/gui/LayerState.h>
+
+#include "Barrier.h"
 #include "MessageQueue.h"
+#include "DisplayDevice.h"
+
+#include "DisplayHardware/HWComposer.h"
 
 namespace android {
 
 // ---------------------------------------------------------------------------
 
 class Client;
-class DisplayHardware;
 class DisplayEventConnection;
 class EventThread;
 class Layer;
+class LayerBase;
+class LayerBaseClient;
 class LayerDim;
 class LayerScreenshot;
-struct surface_flinger_cblk_t;
+class SurfaceTextureClient;
 
 // ---------------------------------------------------------------------------
 
-class Client : public BnSurfaceComposerClient
-{
-public:
-        Client(const sp<SurfaceFlinger>& flinger);
-        ~Client();
-
-    status_t initCheck() const;
-
-    // protected by SurfaceFlinger::mStateLock
-    size_t attachLayer(const sp<LayerBaseClient>& layer);
-    void detachLayer(const LayerBaseClient* layer);
-    sp<LayerBaseClient> getLayerUser(int32_t i) const;
-
-private:
-    // ISurfaceComposerClient interface
-    virtual sp<ISurface> createSurface(
-            surface_data_t* params, const String8& name,
-            DisplayID display, uint32_t w, uint32_t h,PixelFormat format,
-            uint32_t flags);
-    virtual status_t destroySurface(SurfaceID surfaceId);
-    virtual status_t onTransact(
-        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
-
-    // constant
-    sp<SurfaceFlinger> mFlinger;
-
-    // protected by mLock
-    DefaultKeyedVector< size_t, wp<LayerBaseClient> > mLayers;
-    size_t mNameGenerator;
-
-    // thread-safe
-    mutable Mutex mLock;
-};
-
-class GraphicBufferAlloc : public BnGraphicBufferAlloc
-{
+class GraphicBufferAlloc : public BnGraphicBufferAlloc {
 public:
     GraphicBufferAlloc();
     virtual ~GraphicBufferAlloc();
@@ -102,135 +77,66 @@
 
 // ---------------------------------------------------------------------------
 
-class GraphicPlane
-{
-public:
-    static status_t orientationToTransfrom(int orientation, int w, int h,
-            Transform* tr);
-
-                                GraphicPlane();
-                                ~GraphicPlane();
-
-        bool                    initialized() const;
-
-        void                    setDisplayHardware(DisplayHardware *);
-        status_t                setOrientation(int orientation);
-        int                     getOrientation() const { return mOrientation; }
-        int                     getWidth() const;
-        int                     getHeight() const;
-
-        const DisplayHardware&  displayHardware() const;
-        DisplayHardware&        editDisplayHardware();
-        const Transform&        transform() const;
-        EGLDisplay              getEGLDisplay() const;
-        
-private:
-                                GraphicPlane(const GraphicPlane&);
-        GraphicPlane            operator = (const GraphicPlane&);
-
-        DisplayHardware*        mHw;
-        Transform               mGlobalTransform;
-        Transform               mDisplayTransform;
-        int                     mOrientation;
-        float                   mDisplayWidth;
-        float                   mDisplayHeight;
-        int                     mWidth;
-        int                     mHeight;
-};
-
-// ---------------------------------------------------------------------------
-
 enum {
-    eTransactionNeeded      = 0x01,
-    eTraversalNeeded        = 0x02
+    eTransactionNeeded        = 0x01,
+    eTraversalNeeded          = 0x02,
+    eDisplayTransactionNeeded = 0x04,
+    eTransactionMask          = 0x07
 };
 
-class SurfaceFlinger :
-        public BinderService<SurfaceFlinger>,
-        public BnSurfaceComposer,
-        public IBinder::DeathRecipient,
-        protected Thread
+class SurfaceFlinger : public BinderService<SurfaceFlinger>,
+                       public BnSurfaceComposer,
+                       private IBinder::DeathRecipient,
+                       private Thread,
+                       private HWComposer::EventHandler
 {
 public:
-    static char const* getServiceName() { return "SurfaceFlinger"; }
+    static char const* getServiceName() {
+        return "SurfaceFlinger";
+    }
 
-                    SurfaceFlinger();
-    virtual         ~SurfaceFlinger();
-            void    init();
+    SurfaceFlinger();
 
-    virtual status_t onTransact(
-        uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags);
-
-    virtual status_t dump(int fd, const Vector<String16>& args);
-
-    // ISurfaceComposer interface
-    virtual sp<ISurfaceComposerClient>  createConnection();
-    virtual sp<IGraphicBufferAlloc>     createGraphicBufferAlloc();
-    virtual sp<IMemoryHeap>             getCblk() const;
-    virtual void                        bootFinished();
-    virtual void                        setTransactionState(const Vector<ComposerState>& state,
-                                                            int orientation, uint32_t flags);
-    virtual bool                        authenticateSurfaceTexture(const sp<ISurfaceTexture>& surface) const;
-    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
-
-    virtual status_t captureScreen(DisplayID dpy,
-            sp<IMemoryHeap>* heap,
-            uint32_t* width, uint32_t* height,
-            PixelFormat* format, uint32_t reqWidth, uint32_t reqHeight,
-            uint32_t minLayerZ, uint32_t maxLayerZ);
-
-    virtual status_t                    turnElectronBeamOff(int32_t mode);
-    virtual status_t                    turnElectronBeamOn(int32_t mode);
-
-
-            // called when screen needs to turn off
-            void screenReleased();
-            // called when screen is turning back on
-            void screenAcquired();
-
-            // called on the main thread in response to screenReleased()
-            void onScreenReleased();
-            // called on the main thread in response to screenAcquired()
-            void onScreenAcquired();
-
-
-            status_t renderScreenToTexture(DisplayID dpy,
-                    GLuint* textureName, GLfloat* uOut, GLfloat* vOut);
-            status_t renderScreenToTextureLocked(DisplayID dpy,
-                    GLuint* textureName, GLfloat* uOut, GLfloat* vOut);
-
-            void onMessageReceived(int32_t what);
-
-            status_t postMessageAsync(const sp<MessageBase>& msg,
-                    nsecs_t reltime=0, uint32_t flags = 0);
-
-            status_t postMessageSync(const sp<MessageBase>& msg,
-                    nsecs_t reltime=0, uint32_t flags = 0);
-
-    status_t removeLayer(const sp<LayerBase>& layer);
-    status_t addLayer(const sp<LayerBase>& layer);
-    status_t invalidateLayerVisibility(const sp<LayerBase>& layer);
-    void invalidateHwcGeometry();
-
-    sp<Layer> getLayer(const sp<ISurface>& sur) const;
-
-    GLuint getProtectedTexName() const { return mProtectedTexName; }
-
-
-    class MessageDestroyGLTexture : public MessageBase {
-        GLuint texture;
-    public:
-        MessageDestroyGLTexture(GLuint texture) : texture(texture) { }
-        virtual bool handler() {
-            glDeleteTextures(1, &texture);
-            return true;
-        }
+    enum {
+        EVENT_VSYNC = HWC_EVENT_VSYNC
     };
 
+    // post an asynchronous message to the main thread
+    status_t postMessageAsync(const sp<MessageBase>& msg, nsecs_t reltime = 0,
+        uint32_t flags = 0);
 
-private:
-    // DeathRecipient interface
-    virtual void binderDied(const wp<IBinder>& who);
+    // post a synchronous message to the main thread
+    status_t postMessageSync(const sp<MessageBase>& msg, nsecs_t reltime = 0,
+        uint32_t flags = 0);
+
+    // force full composition on all displays
+    void repaintEverything();
+
+    // renders content on given display to a texture. thread-safe version.
+    status_t renderScreenToTexture(DisplayID dpy, GLuint* textureName,
+        GLfloat* uOut, GLfloat* vOut);
+
+    // renders content on given display to a texture, w/o acquiring main lock
+    status_t renderScreenToTextureLocked(DisplayID dpy, GLuint* textureName,
+        GLfloat* uOut, GLfloat* vOut);
+
+    // returns the default Display
+    sp<const DisplayDevice> getDefaultDisplayDevice() const {
+        return getDisplayDevice(DisplayDevice::DISPLAY_ID_MAIN);
+    }
+
+    // utility function to delete a texture on the main thread
+    void deleteTextureAsync(GLuint texture);
+
+
+    // enable/disable h/w composer event
+    // TODO: this should be made accessible only to EventThread
+    void eventControl(int event, int enabled);
+
+    // called on the main thread by MessageQueue when an internal message
+    // is received
+    // TODO: this should be made accessible only to MessageQueue
+    void onMessageReceived(int32_t what);
 
 private:
     friend class Client;
@@ -239,190 +145,307 @@
     friend class LayerBaseClient;
     friend class Layer;
 
-    sp<ISurface> createSurface(
-            ISurfaceComposerClient::surface_data_t* params,
-            const String8& name,
-            const sp<Client>& client,
-            DisplayID display, uint32_t w, uint32_t h, PixelFormat format,
-            uint32_t flags);
+    // We're reference counted, never destroy SurfaceFlinger directly
+    virtual ~SurfaceFlinger();
 
-    sp<Layer> createNormalSurface(
-            const sp<Client>& client, DisplayID display,
-            uint32_t w, uint32_t h, uint32_t flags,
-            PixelFormat& format);
+    /* ------------------------------------------------------------------------
+     * Internal data structures
+     */
 
-    sp<LayerDim> createDimSurface(
-            const sp<Client>& client, DisplayID display,
-            uint32_t w, uint32_t h, uint32_t flags);
-
-    sp<LayerScreenshot> createScreenshotSurface(
-            const sp<Client>& client, DisplayID display,
-            uint32_t w, uint32_t h, uint32_t flags);
-
-    status_t removeSurface(const sp<Client>& client, SurfaceID sid);
-    status_t destroySurface(const wp<LayerBaseClient>& layer);
-    uint32_t setClientStateLocked(const sp<Client>& client, const layer_state_t& s);
-
-    class LayerVector : public SortedVector< sp<LayerBase> > {
+    class LayerVector : public SortedVector<sp<LayerBase> > {
     public:
-        LayerVector() { }
-        LayerVector(const LayerVector& rhs) : SortedVector< sp<LayerBase> >(rhs) { }
-        virtual int do_compare(const void* lhs, const void* rhs) const {
-            const sp<LayerBase>& l(*reinterpret_cast<const sp<LayerBase>*>(lhs));
-            const sp<LayerBase>& r(*reinterpret_cast<const sp<LayerBase>*>(rhs));
-            // sort layers by Z order
-            uint32_t lz = l->currentState().z;
-            uint32_t rz = r->currentState().z;
-            // then by sequence, so we get a stable ordering
-            return (lz != rz) ? (lz - rz) : (l->sequence - r->sequence);
-        }
+        LayerVector();
+        LayerVector(const LayerVector& rhs);
+        virtual int do_compare(const void* lhs, const void* rhs) const;
+    };
+
+    struct DisplayDeviceState {
+        DisplayDeviceState();
+        DisplayDeviceState(int32_t id);
+        int32_t id;
+        sp<ISurfaceTexture> surface;
+        uint32_t layerStack;
+        Rect viewport;
+        Rect frame;
+        uint8_t orientation;
     };
 
     struct State {
-        State()
-            : orientation(ISurfaceComposer::eOrientationDefault),
-              orientationFlags(0) {
-        }
-        LayerVector     layersSortedByZ;
-        uint8_t         orientation;
-        uint8_t         orientationFlags;
+        LayerVector layersSortedByZ;
+        DefaultKeyedVector< wp<IBinder>, DisplayDeviceState> displays;
     };
 
-    virtual bool        threadLoop();
-    virtual status_t    readyToRun();
-    virtual void        onFirstRef();
+    /* ------------------------------------------------------------------------
+     * IBinder interface
+     */
+    virtual status_t onTransact(uint32_t code, const Parcel& data,
+        Parcel* reply, uint32_t flags);
+    virtual status_t dump(int fd, const Vector<String16>& args);
 
-public:     // hack to work around gcc 4.0.3 bug
-    const GraphicPlane&     graphicPlane(int dpy) const;
-          GraphicPlane&     graphicPlane(int dpy);
+    /* ------------------------------------------------------------------------
+     * ISurfaceComposer interface
+     */
+    virtual sp<ISurfaceComposerClient> createConnection();
+    virtual sp<IGraphicBufferAlloc> createGraphicBufferAlloc();
+    virtual sp<IBinder> createDisplay();
+    virtual sp<IBinder> getBuiltInDisplay(int32_t id);
+    virtual void setTransactionState(const Vector<ComposerState>& state,
+            const Vector<DisplayState>& displays, uint32_t flags);
+    virtual void bootFinished();
+    virtual bool authenticateSurfaceTexture(
+        const sp<ISurfaceTexture>& surface) const;
+    virtual sp<IDisplayEventConnection> createDisplayEventConnection();
+    virtual status_t captureScreen(const sp<IBinder>& display, sp<IMemoryHeap>* heap,
+        uint32_t* width, uint32_t* height, PixelFormat* format,
+        uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ,
+        uint32_t maxLayerZ);
+    // called when screen needs to turn off
+    virtual void blank();
+    // called when screen is turning back on
+    virtual void unblank();
+    virtual status_t getDisplayInfo(const sp<IBinder>& display, DisplayInfo* info);
+    virtual void connectDisplay(const sp<ISurfaceTexture>& display);
 
-          void              signalTransaction();
-          void              signalLayerUpdate();
-          void              signalRefresh();
-          void              repaintEverything();
+    /* ------------------------------------------------------------------------
+     * DeathRecipient interface
+     */
+    virtual void binderDied(const wp<IBinder>& who);
 
-private:
-            void        waitForEvent();
-            void        handleTransaction(uint32_t transactionFlags);
-            void        handleTransactionLocked(uint32_t transactionFlags);
+    /* ------------------------------------------------------------------------
+     * Thread interface
+     */
+    virtual bool threadLoop();
+    virtual status_t readyToRun();
+    virtual void onFirstRef();
 
-            void        computeVisibleRegions(
-                            const LayerVector& currentLayers,
-                            Region& dirtyRegion,
-                            Region& wormholeRegion);
+    /* ------------------------------------------------------------------------
+     * HWComposer::EventHandler interface
+     */
+    virtual void onVSyncReceived(int dpy, nsecs_t timestamp);
 
-            void        handlePageFlip();
-            bool        lockPageFlip(const LayerVector& currentLayers);
-            void        unlockPageFlip(const LayerVector& currentLayers);
-            void        handleRefresh();
-            void        handleWorkList();
-            void        handleRepaint();
-            void        postFramebuffer();
-            void        setupHardwareComposer();
-            void        composeSurfaces(const Region& dirty);
+    /* ------------------------------------------------------------------------
+     * Message handling
+     */
+    void waitForEvent();
+    void signalTransaction();
+    void signalLayerUpdate();
+    void signalRefresh();
 
+    // called on the main thread in response to initializeDisplays()
+    void onInitializeDisplays();
+    // called on the main thread in response to blank()
+    void onScreenReleased();
+    // called on the main thread in response to unblank()
+    void onScreenAcquired();
 
-            void        setInvalidateRegion(const Region& reg);
-            Region      getAndClearInvalidateRegion();
+    void handleMessageTransaction();
+    void handleMessageInvalidate();
+    void handleMessageRefresh();
 
-            ssize_t     addClientLayer(const sp<Client>& client,
-                    const sp<LayerBaseClient>& lbc);
-            status_t    addLayer_l(const sp<LayerBase>& layer);
-            status_t    removeLayer_l(const sp<LayerBase>& layer);
-            status_t    purgatorizeLayer_l(const sp<LayerBase>& layer);
+    void handleTransaction(uint32_t transactionFlags);
+    void handleTransactionLocked(uint32_t transactionFlags);
 
-            uint32_t    getTransactionFlags(uint32_t flags);
-            uint32_t    peekTransactionFlags(uint32_t flags);
-            uint32_t    setTransactionFlags(uint32_t flags);
-            void        commitTransaction();
+    /* handlePageFilp: this is were we latch a new buffer
+     * if available and compute the dirty region.
+     */
+    void handlePageFlip();
 
+    /* ------------------------------------------------------------------------
+     * Transactions
+     */
+    uint32_t getTransactionFlags(uint32_t flags);
+    uint32_t peekTransactionFlags(uint32_t flags);
+    uint32_t setTransactionFlags(uint32_t flags);
+    void commitTransaction();
+    uint32_t setClientStateLocked(const sp<Client>& client,
+        const layer_state_t& s);
+    uint32_t setDisplayStateLocked(const DisplayState& s);
 
-            status_t captureScreenImplLocked(DisplayID dpy,
-                    sp<IMemoryHeap>* heap,
-                    uint32_t* width, uint32_t* height, PixelFormat* format,
-                    uint32_t reqWidth, uint32_t reqHeight,
-                    uint32_t minLayerZ, uint32_t maxLayerZ);
+    /* ------------------------------------------------------------------------
+     * Layer management
+     */
+    sp<ISurface> createLayer(ISurfaceComposerClient::surface_data_t* params,
+        const String8& name, const sp<Client>& client, DisplayID display,
+        uint32_t w, uint32_t h, PixelFormat format, uint32_t flags);
 
-            status_t turnElectronBeamOffImplLocked(int32_t mode);
-            status_t turnElectronBeamOnImplLocked(int32_t mode);
-            status_t electronBeamOffAnimationImplLocked();
-            status_t electronBeamOnAnimationImplLocked();
+    sp<Layer> createNormalLayer(const sp<Client>& client, DisplayID display,
+        uint32_t w, uint32_t h, uint32_t flags, PixelFormat& format);
 
-            void        debugFlashRegions();
-            void        drawWormhole() const;
+    sp<LayerDim> createDimLayer(const sp<Client>& client, DisplayID display,
+        uint32_t w, uint32_t h, uint32_t flags);
 
-            void        startBootAnim();
+    sp<LayerScreenshot> createScreenshotLayer(const sp<Client>& client,
+        DisplayID display, uint32_t w, uint32_t h, uint32_t flags);
 
-            void listLayersLocked(const Vector<String16>& args, size_t& index,
-                    String8& result, char* buffer, size_t SIZE) const;
-            void dumpStatsLocked(const Vector<String16>& args, size_t& index,
-                    String8& result, char* buffer, size_t SIZE) const;
-            void clearStatsLocked(const Vector<String16>& args, size_t& index,
-                    String8& result, char* buffer, size_t SIZE) const;
-            void dumpAllLocked(String8& result, char* buffer, size_t SIZE) const;
+    // called in response to the window-manager calling
+    // ISurfaceComposerClient::destroySurface()
+    // The specified layer is first placed in a purgatory list
+    // until all references from the client are released.
+    status_t onLayerRemoved(const sp<Client>& client, SurfaceID sid);
 
-    mutable     MessageQueue    mEventQueue;
+    // called when all clients have released all their references to
+    // this layer meaning it is entirely safe to destroy all
+    // resources associated to this layer.
+    status_t onLayerDestroyed(const wp<LayerBaseClient>& layer);
 
-                // access must be protected by mStateLock
-    mutable     Mutex                   mStateLock;
-                State                   mCurrentState;
-    volatile    int32_t                 mTransactionFlags;
-                Condition               mTransactionCV;
-                SortedVector< sp<LayerBase> > mLayerPurgatory;
-                bool                    mTransationPending;
-                Vector< sp<LayerBase> > mLayersPendingRemoval;
+    // remove a layer from SurfaceFlinger immediately
+    status_t removeLayer(const sp<LayerBase>& layer);
 
-                // protected by mStateLock (but we could use another lock)
-                GraphicPlane                mGraphicPlanes[1];
-                bool                        mLayersRemoved;
-                DefaultKeyedVector< wp<IBinder>, wp<Layer> > mLayerMap;
+    // add a layer to SurfaceFlinger
+    ssize_t addClientLayer(const sp<Client>& client,
+        const sp<LayerBaseClient>& lbc);
 
-                // access must be protected by mInvalidateLock
-    mutable     Mutex                       mInvalidateLock;
-                Region                      mInvalidateRegion;
+    status_t removeLayer_l(const sp<LayerBase>& layer);
+    status_t purgatorizeLayer_l(const sp<LayerBase>& layer);
 
-                // constant members (no synchronization needed for access)
-                sp<IMemoryHeap>             mServerHeap;
-                surface_flinger_cblk_t*     mServerCblk;
-                GLuint                      mWormholeTexName;
-                GLuint                      mProtectedTexName;
-                nsecs_t                     mBootTime;
-                sp<EventThread>             mEventThread;
+    /* ------------------------------------------------------------------------
+     * Boot animation, on/off animations and screen capture
+     */
 
-                // Can only accessed from the main thread, these members
-                // don't need synchronization
-                State                       mDrawingState;
-                Region                      mDirtyRegion;
-                Region                      mDirtyRegionRemovedLayer;
-                Region                      mSwapRegion;
-                Region                      mWormholeRegion;
-                bool                        mVisibleRegionsDirty;
-                bool                        mHwWorkListDirty;
-                int32_t                     mElectronBeamAnimationMode;
-                Vector< sp<LayerBase> >     mVisibleLayersSortedByZ;
+    void startBootAnim();
 
+    status_t captureScreenImplLocked(const sp<IBinder>& display, sp<IMemoryHeap>* heap,
+        uint32_t* width, uint32_t* height, PixelFormat* format,
+        uint32_t reqWidth, uint32_t reqHeight, uint32_t minLayerZ,
+        uint32_t maxLayerZ);
 
-                // don't use a lock for these, we don't care
-                int                         mDebugRegion;
-                int                         mDebugDDMS;
-                int                         mDebugDisableHWC;
-                int                         mDebugDisableTransformHint;
-                volatile nsecs_t            mDebugInSwapBuffers;
-                nsecs_t                     mLastSwapBufferTime;
-                volatile nsecs_t            mDebugInTransaction;
-                nsecs_t                     mLastTransactionTime;
-                bool                        mBootFinished;
+    /* ------------------------------------------------------------------------
+     * EGL
+     */
+    static status_t selectConfigForPixelFormat(EGLDisplay dpy,
+        EGLint const* attrs, PixelFormat format, EGLConfig* outConfig);
+    static EGLConfig selectEGLConfig(EGLDisplay disp, EGLint visualId);
+    static EGLContext createGLContext(EGLDisplay disp, EGLConfig config);
+    void initializeGL(EGLDisplay display, EGLSurface surface);
+    uint32_t getMaxTextureSize() const;
+    uint32_t getMaxViewportDims() const;
 
-                // these are thread safe
-    mutable     Barrier                     mReadyToRunBarrier;
+    /* ------------------------------------------------------------------------
+     * Display and layer stack management
+     */
+    // called when starting, or restarting after system_server death
+    void initializeDisplays();
 
+    sp<const DisplayDevice> getDisplayDevice(DisplayID dpy) const {
+        return mDisplays.valueFor(dpy);
+    }
+    const sp<DisplayDevice>& getDisplayDevice(DisplayID dpy) {
+        return mDisplays.valueFor(dpy);
+    }
 
-                // protected by mDestroyedLayerLock;
-    mutable     Mutex                       mDestroyedLayerLock;
-                Vector<LayerBase const *>   mDestroyedLayers;
+    // mark a region of a layer stack dirty. this updates the dirty
+    // region of all screens presenting this layer stack.
+    void invalidateLayerStack(uint32_t layerStack, const Region& dirty);
 
-   // only written in the main thread, only read in other threads
-   volatile     int32_t                     mSecureFrameBuffer;
+    /* ------------------------------------------------------------------------
+     * H/W composer
+     */
+
+    HWComposer& getHwComposer() const { return *mHwc; }
+
+    /* ------------------------------------------------------------------------
+     * Compositing
+     */
+    void invalidateHwcGeometry();
+    void computeVisibleRegions(const LayerVector& currentLayers,
+            uint32_t layerStack,
+            Region& dirtyRegion, Region& opaqueRegion);
+
+    void preComposition();
+    void postComposition();
+    void rebuildLayerStacks();
+    void setUpHWComposer();
+    void doComposition();
+    void doDebugFlashRegions();
+    void doDisplayComposition(const sp<const DisplayDevice>& hw,
+            const Region& dirtyRegion);
+    void doComposeSurfaces(const sp<const DisplayDevice>& hw,
+            const Region& dirty);
+
+    void postFramebuffer();
+    void drawWormhole(const Region& region) const;
+    GLuint getProtectedTexName() const {
+        return mProtectedTexName;
+    }
+
+    /* ------------------------------------------------------------------------
+     * Display management
+     */
+    int32_t chooseNewDisplayIdLocked() const;
+
+    /* ------------------------------------------------------------------------
+     * Debugging & dumpsys
+     */
+    void listLayersLocked(const Vector<String16>& args, size_t& index,
+        String8& result, char* buffer, size_t SIZE) const;
+    void dumpStatsLocked(const Vector<String16>& args, size_t& index,
+        String8& result, char* buffer, size_t SIZE) const;
+    void clearStatsLocked(const Vector<String16>& args, size_t& index,
+        String8& result, char* buffer, size_t SIZE) const;
+    void dumpAllLocked(String8& result, char* buffer, size_t SIZE) const;
+
+    /* ------------------------------------------------------------------------
+     * Attributes
+     */
+
+    // access must be protected by mStateLock
+    mutable Mutex mStateLock;
+    State mCurrentState;
+    volatile int32_t mTransactionFlags;
+    Condition mTransactionCV;
+    SortedVector<sp<LayerBase> > mLayerPurgatory;
+    bool mTransationPending;
+    Vector<sp<LayerBase> > mLayersPendingRemoval;
+
+    // protected by mStateLock (but we could use another lock)
+    bool mLayersRemoved;
+
+    // access must be protected by mInvalidateLock
+    volatile int32_t mRepaintEverything;
+
+    // constant members (no synchronization needed for access)
+    HWComposer* mHwc;
+    GLuint mProtectedTexName;
+    nsecs_t mBootTime;
+    sp<EventThread> mEventThread;
+    GLint mMaxViewportDims[2];
+    GLint mMaxTextureSize;
+    EGLContext mEGLContext;
+    EGLConfig mEGLConfig;
+    EGLDisplay mEGLDisplay;
+    sp<IBinder> mDefaultDisplays[DisplayDevice::DISPLAY_ID_COUNT];
+
+    // Can only accessed from the main thread, these members
+    // don't need synchronization
+    State mDrawingState;
+    bool mVisibleRegionsDirty;
+    bool mHwWorkListDirty;
+    DefaultKeyedVector<int32_t, sp<DisplayDevice> > mDisplays;
+
+    // don't use a lock for these, we don't care
+    int mDebugRegion;
+    int mDebugDDMS;
+    int mDebugDisableHWC;
+    int mDebugDisableTransformHint;
+    volatile nsecs_t mDebugInSwapBuffers;
+    nsecs_t mLastSwapBufferTime;
+    volatile nsecs_t mDebugInTransaction;
+    nsecs_t mLastTransactionTime;
+    bool mBootFinished;
+
+    // these are thread safe
+    mutable MessageQueue mEventQueue;
+    mutable Barrier mReadyToRunBarrier;
+
+    // protected by mDestroyedLayerLock;
+    mutable Mutex mDestroyedLayerLock;
+    Vector<LayerBase const *> mDestroyedLayers;
+
+    /* ------------------------------------------------------------------------
+     * Feature prototyping
+     */
+
+    sp<IBinder> mExtDisplayToken;
 };
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/tests/Transaction_test.cpp b/services/surfaceflinger/tests/Transaction_test.cpp
index 84ae0d9..0592c5b 100644
--- a/services/surfaceflinger/tests/Transaction_test.cpp
+++ b/services/surfaceflinger/tests/Transaction_test.cpp
@@ -24,6 +24,7 @@
 #include <private/gui/ComposerService.h>
 
 #include <utils/String8.h>
+#include <ui/DisplayInfo.h>
 
 namespace android {
 
@@ -56,7 +57,8 @@
         uint32_t w=0, h=0;
         PixelFormat fmt=0;
         sp<ISurfaceComposer> sf(ComposerService::getComposerService());
-        ASSERT_EQ(NO_ERROR, sf->captureScreen(0, &heap, &w, &h, &fmt, 0, 0,
+        sp<IBinder> display(sf->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+        ASSERT_EQ(NO_ERROR, sf->captureScreen(display, &heap, &w, &h, &fmt, 0, 0,
                 0, INT_MAX));
         ASSERT_TRUE(heap != NULL);
         ASSERT_EQ(PIXEL_FORMAT_RGBA_8888, fmt);
@@ -92,12 +94,17 @@
         mComposerClient = new SurfaceComposerClient;
         ASSERT_EQ(NO_ERROR, mComposerClient->initCheck());
 
-        ssize_t displayWidth = mComposerClient->getDisplayWidth(0);
-        ssize_t displayHeight = mComposerClient->getDisplayHeight(0);
+        sp<IBinder> display(SurfaceComposerClient::getBuiltInDisplay(
+                ISurfaceComposer::eDisplayIdMain));
+        DisplayInfo info;
+        SurfaceComposerClient::getDisplayInfo(display, &info);
+
+        ssize_t displayWidth = info.w;
+        ssize_t displayHeight = info.h;
 
         // Background surface
         mBGSurfaceControl = mComposerClient->createSurface(
-                String8("BG Test Surface"), 0, displayWidth, displayHeight,
+                String8("BG Test Surface"), displayWidth, displayHeight,
                 PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mBGSurfaceControl != NULL);
         ASSERT_TRUE(mBGSurfaceControl->isValid());
@@ -105,7 +112,7 @@
 
         // Foreground surface
         mFGSurfaceControl = mComposerClient->createSurface(
-                String8("FG Test Surface"), 0, 64, 64, PIXEL_FORMAT_RGBA_8888, 0);
+                String8("FG Test Surface"), 64, 64, PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mFGSurfaceControl != NULL);
         ASSERT_TRUE(mFGSurfaceControl->isValid());
 
@@ -113,7 +120,7 @@
 
         // Synchronization surface
         mSyncSurfaceControl = mComposerClient->createSurface(
-                String8("Sync Test Surface"), 0, 1, 1, PIXEL_FORMAT_RGBA_8888, 0);
+                String8("Sync Test Surface"), 1, 1, PIXEL_FORMAT_RGBA_8888, 0);
         ASSERT_TRUE(mSyncSurfaceControl != NULL);
         ASSERT_TRUE(mSyncSurfaceControl->isValid());
 
diff --git a/services/surfaceflinger/tests/resize/resize.cpp b/services/surfaceflinger/tests/resize/resize.cpp
index c143b3d..d61ea70 100644
--- a/services/surfaceflinger/tests/resize/resize.cpp
+++ b/services/surfaceflinger/tests/resize/resize.cpp
@@ -38,8 +38,8 @@
     // create a client to surfaceflinger
     sp<SurfaceComposerClient> client = new SurfaceComposerClient();
     
-    sp<Surface> surface = client->createSurface(0, 160, 240,
-            PIXEL_FORMAT_RGB_565);
+    sp<Surface> surface = client->createSurface(String8("resize"),
+            160, 240, PIXEL_FORMAT_RGB_565, 0);
 
 
     SurfaceComposerClient::openGlobalTransaction();
diff --git a/services/surfaceflinger/tests/screencap/screencap.cpp b/services/surfaceflinger/tests/screencap/screencap.cpp
index 53566e0..f842fc3 100644
--- a/services/surfaceflinger/tests/screencap/screencap.cpp
+++ b/services/surfaceflinger/tests/screencap/screencap.cpp
@@ -42,7 +42,8 @@
     sp<IMemoryHeap> heap;
     uint32_t w, h;
     PixelFormat f;
-    status_t err = composer->captureScreen(0, &heap, &w, &h, &f, 0, 0);
+    sp<IBinder> display(composer->getBuiltInDisplay(ISurfaceComposer::eDisplayIdMain));
+    status_t err = composer->captureScreen(display, &heap, &w, &h, &f, 0, 0);
     if (err != NO_ERROR) {
         fprintf(stderr, "screen capture failed: %s\n", strerror(-err));
         exit(0);
diff --git a/services/surfaceflinger/tests/surface/surface.cpp b/services/surfaceflinger/tests/surface/surface.cpp
index a8878f7..9c41cc3 100644
--- a/services/surfaceflinger/tests/surface/surface.cpp
+++ b/services/surfaceflinger/tests/surface/surface.cpp
@@ -37,7 +37,7 @@
     sp<SurfaceComposerClient> client = new SurfaceComposerClient();
     
     sp<SurfaceControl> surfaceControl = client->createSurface(
-            0, 160, 240, PIXEL_FORMAT_RGB_565);
+            String8("surface"), 160, 240, PIXEL_FORMAT_RGB_565, 0);
     SurfaceComposerClient::openGlobalTransaction();
     surfaceControl->setLayer(100000);
     SurfaceComposerClient::closeGlobalTransaction();