Merge "Fix a few things in the JNI docs."
diff --git a/include/gui/ISurfaceTexture.h b/include/gui/ISurfaceTexture.h
index 5b5b731..37a9b4a 100644
--- a/include/gui/ISurfaceTexture.h
+++ b/include/gui/ISurfaceTexture.h
@@ -87,6 +87,7 @@
 
     virtual status_t setCrop(const Rect& reg) = 0;
     virtual status_t setTransform(uint32_t transform) = 0;
+    virtual status_t setScalingMode(int mode) = 0;
 
     // getAllocator retrieves the binder object that must be referenced as long
     // as the GraphicBuffers dequeued from this ISurfaceTexture are referenced.
diff --git a/include/gui/SurfaceTexture.h b/include/gui/SurfaceTexture.h
index 4080f27..e46765e 100644
--- a/include/gui/SurfaceTexture.h
+++ b/include/gui/SurfaceTexture.h
@@ -88,6 +88,7 @@
     virtual void cancelBuffer(int buf);
     virtual status_t setCrop(const Rect& reg);
     virtual status_t setTransform(uint32_t transform);
+    virtual status_t setScalingMode(int mode);
 
     virtual int query(int what, int* value);
 
@@ -185,6 +186,9 @@
     // getCurrentTransform returns the transform of the current buffer
     uint32_t getCurrentTransform() const;
 
+    // getCurrentScalingMode returns the scaling mode of the current buffer
+    uint32_t getCurrentScalingMode() const;
+
     // dump our state in a String
     void dump(String8& result) const;
     void dump(String8& result, const char* prefix, char* buffer, size_t SIZE) const;
@@ -220,6 +224,7 @@
               mBufferState(BufferSlot::FREE),
               mRequestBufferCalled(false),
               mTransform(0),
+              mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
               mTimestamp(0) {
             mCrop.makeInvalid();
         }
@@ -281,6 +286,11 @@
         // slot.
         uint32_t mTransform;
 
+        // mScalingMode is the current scaling mode for this buffer slot. This
+        // gets set to mNextScalingMode each time queueBuffer gets called for
+        // this slot.
+        uint32_t mScalingMode;
+
         // mTimestamp is the current timestamp for this buffer slot. This gets
         // to set by queueBuffer each time this slot is queued.
         int64_t mTimestamp;
@@ -337,20 +347,24 @@
     sp<GraphicBuffer> mCurrentTextureBuf;
 
     // mCurrentCrop is the crop rectangle that applies to the current texture.
-    // It gets set to mLastQueuedCrop each time updateTexImage is called.
+    // It gets set each time updateTexImage is called.
     Rect mCurrentCrop;
 
     // mCurrentTransform is the transform identifier for the current texture. It
-    // gets set to mLastQueuedTransform each time updateTexImage is called.
+    // gets set each time updateTexImage is called.
     uint32_t mCurrentTransform;
 
+    // mCurrentScalingMode is the scaling mode for the current texture. It gets
+    // set to each time updateTexImage is called.
+    uint32_t mCurrentScalingMode;
+
     // mCurrentTransformMatrix is the transform matrix for the current texture.
     // It gets computed by computeTransformMatrix each time updateTexImage is
     // called.
     float mCurrentTransformMatrix[16];
 
     // mCurrentTimestamp is the timestamp for the current texture. It
-    // gets set to mLastQueuedTimestamp each time updateTexImage is called.
+    // gets set each time updateTexImage is called.
     int64_t mCurrentTimestamp;
 
     // mNextCrop is the crop rectangle that will be used for the next buffer
@@ -361,6 +375,10 @@
     // buffer that gets queued. It is set by calling setTransform.
     uint32_t mNextTransform;
 
+    // mNextScalingMode is the scaling mode that will be used for the next
+    // buffers that get queued. It is set by calling setScalingMode.
+    int mNextScalingMode;
+
     // mTexName is the name of the OpenGL texture to which streamed images will
     // be bound when updateTexImage is called. It is set at construction time
     // changed with a call to setTexName.
diff --git a/include/gui/SurfaceTextureClient.h b/include/gui/SurfaceTextureClient.h
index 5ec469e..76e7119 100644
--- a/include/gui/SurfaceTextureClient.h
+++ b/include/gui/SurfaceTextureClient.h
@@ -21,6 +21,7 @@
 #include <gui/SurfaceTexture.h>
 
 #include <ui/egl/android_natives.h>
+#include <ui/Region.h>
 
 #include <utils/RefBase.h>
 #include <utils/threads.h>
@@ -37,29 +38,24 @@
 
     sp<ISurfaceTexture> getISurfaceTexture() const;
 
-private:
-    friend class Surface;
+protected:
+    SurfaceTextureClient();
+    void setISurfaceTexture(const sp<ISurfaceTexture>& surfaceTexture);
 
+private:
     // can't be copied
     SurfaceTextureClient& operator = (const SurfaceTextureClient& rhs);
     SurfaceTextureClient(const SurfaceTextureClient& rhs);
+    void init();
 
     // ANativeWindow hooks
-    static int cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
-    static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int perform(ANativeWindow* window, int operation, ...);
-    static int query(const ANativeWindow* window, int what, int* value);
-    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int setSwapInterval(ANativeWindow* window, int interval);
-
-    int cancelBuffer(ANativeWindowBuffer* buffer);
-    int dequeueBuffer(ANativeWindowBuffer** buffer);
-    int lockBuffer(ANativeWindowBuffer* buffer);
-    int perform(int operation, va_list args);
-    int query(int what, int* value) const;
-    int queueBuffer(ANativeWindowBuffer* buffer);
-    int setSwapInterval(int interval);
+    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_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_setSwapInterval(ANativeWindow* window, int interval);
 
     int dispatchConnect(va_list args);
     int dispatchDisconnect(va_list args);
@@ -67,30 +63,44 @@
     int dispatchSetBuffersGeometry(va_list args);
     int dispatchSetBuffersDimensions(va_list args);
     int dispatchSetBuffersFormat(va_list args);
+    int dispatchSetScalingMode(va_list args);
     int dispatchSetBuffersTransform(va_list args);
     int dispatchSetBuffersTimestamp(va_list args);
     int dispatchSetCrop(va_list args);
     int dispatchSetUsage(va_list args);
+    int dispatchLock(va_list args);
+    int dispatchUnlockAndPost(va_list args);
 
-    int connect(int api);
-    int disconnect(int api);
-    int setBufferCount(int bufferCount);
-    int setBuffersDimensions(int w, int h);
-    int setBuffersFormat(int format);
-    int setBuffersTransform(int transform);
-    int setBuffersTimestamp(int64_t timestamp);
-    int setCrop(Rect const* rect);
-    int setUsage(uint32_t reqUsage);
+protected:
+    virtual int cancelBuffer(ANativeWindowBuffer* buffer);
+    virtual int dequeueBuffer(ANativeWindowBuffer** buffer);
+    virtual int lockBuffer(ANativeWindowBuffer* buffer);
+    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);
 
-    void freeAllBuffers();
-    int getSlotFromBufferLocked(android_native_buffer_t* buffer) const;
-
-    int getConnectedApi() const;
+    virtual int connect(int api);
+    virtual int disconnect(int api);
+    virtual int setBufferCount(int bufferCount);
+    virtual int setBuffersDimensions(int w, int h);
+    virtual int setBuffersFormat(int format);
+    virtual int setScalingMode(int mode);
+    virtual int setBuffersTransform(int transform);
+    virtual int setBuffersTimestamp(int64_t timestamp);
+    virtual int setCrop(Rect const* rect);
+    virtual int setUsage(uint32_t reqUsage);
+    virtual int lock(ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds);
+    virtual int unlockAndPost();
 
     enum { MIN_UNDEQUEUED_BUFFERS = SurfaceTexture::MIN_UNDEQUEUED_BUFFERS };
     enum { NUM_BUFFER_SLOTS = SurfaceTexture::NUM_BUFFER_SLOTS };
     enum { DEFAULT_FORMAT = PIXEL_FORMAT_RGBA_8888 };
 
+private:
+    void freeAllBuffers();
+    int getSlotFromBufferLocked(android_native_buffer_t* buffer) const;
+
     // mSurfaceTexture is the interface to the surface texture server. All
     // operations on the surface texture client ultimately translate into
     // interactions with the server using this interface.
@@ -145,6 +155,12 @@
     // variables of SurfaceTexture objects. It must be locked whenever the
     // member variables are accessed.
     mutable Mutex mMutex;
+
+    // must be used from the lock/unlock thread
+    sp<GraphicBuffer>           mLockedBuffer;
+    sp<GraphicBuffer>           mPostedBuffer;
+    mutable Region              mOldDirtyRegion;
+    bool                        mConnectedToCpu;
 };
 
 }; // namespace android
diff --git a/include/surfaceflinger/Surface.h b/include/surfaceflinger/Surface.h
index dc2a845..c2a494d 100644
--- a/include/surfaceflinger/Surface.h
+++ b/include/surfaceflinger/Surface.h
@@ -28,6 +28,8 @@
 #include <ui/Region.h>
 #include <ui/egl/android_natives.h>
 
+#include <gui/SurfaceTextureClient.h>
+
 #include <surfaceflinger/ISurface.h>
 #include <surfaceflinger/ISurfaceComposerClient.h>
 
@@ -37,14 +39,9 @@
 
 // ---------------------------------------------------------------------------
 
-class GraphicBuffer;
-class GraphicBufferMapper;
-class IOMX;
 class ISurfaceTexture;
-class Rect;
 class Surface;
 class SurfaceComposerClient;
-class SurfaceTextureClient;
 
 // ---------------------------------------------------------------------------
 
@@ -129,8 +126,7 @@
     
 // ---------------------------------------------------------------------------
 
-class Surface 
-    : public EGLNativeBase<ANativeWindow, Surface, RefBase>
+class Surface : public SurfaceTextureClient
 {
 public:
     struct SurfaceInfo {
@@ -158,32 +154,14 @@
     sp<ISurfaceTexture> getSurfaceTexture();
 
     // the lock/unlock APIs must be used from the same thread
-    status_t    lock(SurfaceInfo* info, bool blocking = true);
-    status_t    lock(SurfaceInfo* info, Region* dirty, bool blocking = true);
+    status_t    lock(SurfaceInfo* info, Region* dirty = NULL);
     status_t    unlockAndPost();
 
     sp<IBinder> asBinder() const;
 
 private:
-    /*
-     * Android frameworks friends
-     * (eventually this should go away and be replaced by proper APIs)
-     */
-    // camera and camcorder need access to the ISurface binder interface for preview
-    friend class CameraService;
-    friend class MediaRecorder;
-    // MediaPlayer needs access to ISurface for display
-    friend class MediaPlayer;
-    friend class IOMX;
-    friend class SoftwareRenderer;
     // this is just to be able to write some unit tests
     friend class Test;
-    // videoEditor preview classes
-    friend class VideoEditorPreviewController;
-    friend class PreviewRenderer;
-
-private:
-    friend class SurfaceComposerClient;
     friend class SurfaceControl;
 
     // can't be copied
@@ -194,62 +172,27 @@
     Surface(const Parcel& data, const sp<IBinder>& ref);
     ~Surface();
 
-
-    /*
-     *  ANativeWindow hooks
-     */
-    static int setSwapInterval(ANativeWindow* window, int interval);
-    static int dequeueBuffer(ANativeWindow* window, ANativeWindowBuffer** buffer);
-    static int cancelBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int lockBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int queueBuffer(ANativeWindow* window, ANativeWindowBuffer* buffer);
-    static int query(const ANativeWindow* window, int what, int* value);
-    static int perform(ANativeWindow* window, int operation, ...);
-
-    int setSwapInterval(int interval);
-    int dequeueBuffer(ANativeWindowBuffer** buffer);
-    int lockBuffer(ANativeWindowBuffer* buffer);
-    int queueBuffer(ANativeWindowBuffer* buffer);
-    int cancelBuffer(ANativeWindowBuffer* buffer);
-    int query(int what, int* value) const;
-    int perform(int operation, va_list args);
-
     /*
      *  private stuff...
      */
     void init();
     status_t validate(bool inCancelBuffer = false) const;
 
-    int getConnectedApi() const;
-    
     static void cleanCachedSurfacesLocked();
 
+    virtual int query(int what, int* value) const;
+
     // constants
     status_t                    mInitCheck;
     sp<ISurface>                mSurface;
-    sp<SurfaceTextureClient>    mSurfaceTextureClient;
     uint32_t                    mIdentity;
     PixelFormat                 mFormat;
     uint32_t                    mFlags;
-    
-    // protected by mSurfaceLock. These are also used from lock/unlock
-    // but in that case, they must be called form the same thread.
-    mutable Region              mDirtyRegion;
-
-    // must be used from the lock/unlock thread
-    sp<GraphicBuffer>           mLockedBuffer;
-    sp<GraphicBuffer>           mPostedBuffer;
-    mutable Region              mOldDirtyRegion;
-    bool                        mReserved;
 
     // query() must be called from dequeueBuffer() thread
     uint32_t                    mWidth;
     uint32_t                    mHeight;
 
-    // Inherently thread-safe
-    mutable Mutex               mSurfaceLock;
-    mutable Mutex               mApiLock;
-
     // A cache of Surface objects that have been deserialized into this process.
     static Mutex sCachedSurfacesLock;
     static DefaultKeyedVector<wp<IBinder>, wp<Surface> > sCachedSurfaces;
diff --git a/libs/gui/ISurfaceTexture.cpp b/libs/gui/ISurfaceTexture.cpp
index 41434a4..b4b7492 100644
--- a/libs/gui/ISurfaceTexture.cpp
+++ b/libs/gui/ISurfaceTexture.cpp
@@ -43,6 +43,7 @@
     SET_SYNCHRONOUS_MODE,
     CONNECT,
     DISCONNECT,
+    SET_SCALING_MODE,
 };
 
 
@@ -130,6 +131,15 @@
         return result;
     }
 
+    virtual status_t setScalingMode(int mode) {
+        Parcel data, reply;
+        data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
+        data.writeInt32(mode);
+        remote()->transact(SET_SCALING_MODE, data, &reply);
+        status_t result = reply.readInt32();
+        return result;
+    }
+
     virtual sp<IBinder> getAllocator() {
         Parcel data, reply;
         data.writeInterfaceToken(ISurfaceTexture::getInterfaceDescriptor());
@@ -244,6 +254,13 @@
             reply->writeInt32(result);
             return NO_ERROR;
         } break;
+        case SET_SCALING_MODE: {
+            CHECK_INTERFACE(ISurfaceTexture, data, reply);
+            int mode = data.readInt32();
+            status_t result = setScalingMode(mode);
+            reply->writeInt32(result);
+            return NO_ERROR;
+        } break;
         case GET_ALLOCATOR: {
             CHECK_INTERFACE(ISurfaceTexture, data, reply);
             sp<IBinder> result = getAllocator();
diff --git a/libs/gui/Surface.cpp b/libs/gui/Surface.cpp
index 9185e1e..dabe643 100644
--- a/libs/gui/Surface.cpp
+++ b/libs/gui/Surface.cpp
@@ -46,59 +46,6 @@
 
 namespace android {
 
-// ----------------------------------------------------------------------
-
-static status_t copyBlt(
-        const sp<GraphicBuffer>& dst, 
-        const sp<GraphicBuffer>& src, 
-        const Region& reg)
-{
-    // src and dst with, height and format must be identical. no verification
-    // is done here.
-    status_t err;
-    uint8_t const * src_bits = NULL;
-    err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
-    LOGE_IF(err, "error locking src buffer %s", strerror(-err));
-
-    uint8_t* dst_bits = NULL;
-    err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
-    LOGE_IF(err, "error locking dst buffer %s", strerror(-err));
-
-    Region::const_iterator head(reg.begin());
-    Region::const_iterator tail(reg.end());
-    if (head != tail && src_bits && dst_bits) {
-        const size_t bpp = bytesPerPixel(src->format);
-        const size_t dbpr = dst->stride * bpp;
-        const size_t sbpr = src->stride * bpp;
-
-        while (head != tail) {
-            const Rect& r(*head++);
-            ssize_t h = r.height();
-            if (h <= 0) continue;
-            size_t size = r.width() * bpp;
-            uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
-            uint8_t       * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
-            if (dbpr==sbpr && size==sbpr) {
-                size *= h;
-                h = 1;
-            }
-            do {
-                memcpy(d, s, size);
-                d += dbpr;
-                s += sbpr;
-            } while (--h > 0);
-        }
-    }
-    
-    if (src_bits)
-        src->unlock();
-    
-    if (dst_bits)
-        dst->unlock();
-    
-    return err;
-}
-
 // ============================================================================
 //  SurfaceControl
 // ============================================================================
@@ -277,7 +224,8 @@
 // ---------------------------------------------------------------------------
 
 Surface::Surface(const sp<SurfaceControl>& surface)
-    : mInitCheck(NO_INIT),
+    : SurfaceTextureClient(),
+      mInitCheck(NO_INIT),
       mSurface(surface->mSurface),
       mIdentity(surface->mIdentity),
       mFormat(surface->mFormat), mFlags(surface->mFlags),
@@ -287,7 +235,8 @@
 }
 
 Surface::Surface(const Parcel& parcel, const sp<IBinder>& ref)
-    : mInitCheck(NO_INIT)
+    : SurfaceTextureClient(),
+      mInitCheck(NO_INIT)
 {
     mSurface    = interface_cast<ISurface>(ref);
     mIdentity   = parcel.readInt32();
@@ -363,36 +312,21 @@
 
 void Surface::init()
 {
-    ANativeWindow::setSwapInterval  = setSwapInterval;
-    ANativeWindow::dequeueBuffer    = dequeueBuffer;
-    ANativeWindow::cancelBuffer     = cancelBuffer;
-    ANativeWindow::lockBuffer       = lockBuffer;
-    ANativeWindow::queueBuffer      = queueBuffer;
-    ANativeWindow::query            = query;
-    ANativeWindow::perform          = perform;
-
     if (mSurface != NULL) {
         sp<ISurfaceTexture> surfaceTexture(mSurface->getSurfaceTexture());
         LOGE_IF(surfaceTexture==0, "got a NULL ISurfaceTexture from ISurface");
         if (surfaceTexture != NULL) {
-            mSurfaceTextureClient = new SurfaceTextureClient(surfaceTexture);
-            mSurfaceTextureClient->setUsage(GraphicBuffer::USAGE_HW_RENDER);
+            setISurfaceTexture(surfaceTexture);
+            setUsage(GraphicBuffer::USAGE_HW_RENDER);
         }
 
         DisplayInfo dinfo;
         SurfaceComposerClient::getDisplayInfo(0, &dinfo);
         const_cast<float&>(ANativeWindow::xdpi) = dinfo.xdpi;
         const_cast<float&>(ANativeWindow::ydpi) = dinfo.ydpi;
-
-        const_cast<int&>(ANativeWindow::minSwapInterval) =
-                mSurfaceTextureClient->minSwapInterval;
-
-        const_cast<int&>(ANativeWindow::maxSwapInterval) =
-                mSurfaceTextureClient->maxSwapInterval;
-
         const_cast<uint32_t&>(ANativeWindow::flags) = 0;
 
-        if (mSurfaceTextureClient != 0) {
+        if (surfaceTexture != NULL) {
             mInitCheck = NO_ERROR;
         }
     }
@@ -402,7 +336,6 @@
 {
     // clear all references and trigger an IPC now, to make sure things
     // happen without delay, since these resources are quite heavy.
-    mSurfaceTextureClient.clear();
     mSurface.clear();
     IPCThreadState::self()->flushCommands();
 }
@@ -431,77 +364,6 @@
 
 // ----------------------------------------------------------------------------
 
-int Surface::setSwapInterval(ANativeWindow* window, int interval) {
-    Surface* self = getSelf(window);
-    return self->setSwapInterval(interval);
-}
-
-int Surface::dequeueBuffer(ANativeWindow* window, 
-        ANativeWindowBuffer** buffer) {
-    Surface* self = getSelf(window);
-    return self->dequeueBuffer(buffer);
-}
-
-int Surface::cancelBuffer(ANativeWindow* window,
-        ANativeWindowBuffer* buffer) {
-    Surface* self = getSelf(window);
-    return self->cancelBuffer(buffer);
-}
-
-int Surface::lockBuffer(ANativeWindow* window, 
-        ANativeWindowBuffer* buffer) {
-    Surface* self = getSelf(window);
-    return self->lockBuffer(buffer);
-}
-
-int Surface::queueBuffer(ANativeWindow* window, 
-        ANativeWindowBuffer* buffer) {
-    Surface* self = getSelf(window);
-    return self->queueBuffer(buffer);
-}
-
-int Surface::query(const ANativeWindow* window,
-        int what, int* value) {
-    const Surface* self = getSelf(window);
-    return self->query(what, value);
-}
-
-int Surface::perform(ANativeWindow* window, 
-        int operation, ...) {
-    va_list args;
-    va_start(args, operation);
-    Surface* self = getSelf(window);
-    int res = self->perform(operation, args);
-    va_end(args);
-    return res;
-}
-
-// ----------------------------------------------------------------------------
-
-int Surface::setSwapInterval(int interval) {
-    return mSurfaceTextureClient->setSwapInterval(interval);
-}
-
-int Surface::dequeueBuffer(ANativeWindowBuffer** buffer) {
-    status_t err = mSurfaceTextureClient->dequeueBuffer(buffer);
-    if (err == NO_ERROR) {
-        mDirtyRegion.set(buffer[0]->width, buffer[0]->height);
-    }
-    return err;
-}
-
-int Surface::cancelBuffer(ANativeWindowBuffer* buffer) {
-    return mSurfaceTextureClient->cancelBuffer(buffer);
-}
-
-int Surface::lockBuffer(ANativeWindowBuffer* buffer) {
-    return mSurfaceTextureClient->lockBuffer(buffer);
-}
-
-int Surface::queueBuffer(ANativeWindowBuffer* buffer) {
-    return mSurfaceTextureClient->queueBuffer(buffer);
-}
-
 int Surface::query(int what, int* value) const {
     switch (what) {
     case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
@@ -509,141 +371,39 @@
         *value = 1;
         return NO_ERROR;
     case NATIVE_WINDOW_CONCRETE_TYPE:
-        // TODO: this is not needed anymore
         *value = NATIVE_WINDOW_SURFACE;
         return NO_ERROR;
     }
-    return mSurfaceTextureClient->query(what, value);
-}
-
-int Surface::perform(int operation, va_list args) {
-    return mSurfaceTextureClient->perform(operation, args);
+    return SurfaceTextureClient::query(what, value);
 }
 
 // ----------------------------------------------------------------------------
 
-int Surface::getConnectedApi() const {
-    return mSurfaceTextureClient->getConnectedApi();
-}
+status_t Surface::lock(SurfaceInfo* other, Region* dirtyIn) {
+    ANativeWindow_Buffer outBuffer;
 
-// ----------------------------------------------------------------------------
-
-status_t Surface::lock(SurfaceInfo* info, bool blocking) {
-    return Surface::lock(info, NULL, blocking);
-}
-
-status_t Surface::lock(SurfaceInfo* other, Region* dirtyIn, bool blocking) 
-{
-    if (getConnectedApi()) {
-        LOGE("Surface::lock(%p) failed. Already connected to another API",
-                (ANativeWindow*)this);
-        CallStack stack;
-        stack.update();
-        stack.dump("");
-        return INVALID_OPERATION;
+    ARect temp;
+    ARect* inOutDirtyBounds = NULL;
+    if (dirtyIn) {
+        temp = dirtyIn->getBounds();
+        inOutDirtyBounds = &temp;
     }
 
-    if (mApiLock.tryLock() != NO_ERROR) {
-        LOGE("calling Surface::lock from different threads!");
-        CallStack stack;
-        stack.update();
-        stack.dump("");
-        return WOULD_BLOCK;
-    }
+    status_t err = SurfaceTextureClient::lock(&outBuffer, inOutDirtyBounds);
 
-    /* Here we're holding mApiLock */
-    
-    if (mLockedBuffer != 0) {
-        LOGE("Surface::lock failed, already locked");
-        mApiLock.unlock();
-        return INVALID_OPERATION;
-    }
-
-    // we're intending to do software rendering from this point
-    mSurfaceTextureClient->setUsage(
-            GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
-
-    ANativeWindowBuffer* out;
-    status_t err = mSurfaceTextureClient->dequeueBuffer(&out);
-    LOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
     if (err == NO_ERROR) {
-        sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
-        err = mSurfaceTextureClient->lockBuffer(backBuffer.get());
-        LOGE_IF(err, "lockBuffer (handle=%p) failed (%s)",
-                backBuffer->handle, strerror(-err));
-        if (err == NO_ERROR) {
-            const Rect bounds(backBuffer->width, backBuffer->height);
-            const Region boundsRegion(bounds);
-            Region scratch(boundsRegion);
-            Region& newDirtyRegion(dirtyIn ? *dirtyIn : scratch);
-            newDirtyRegion &= boundsRegion;
-
-            // 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 &&
-                    !(mFlags & ISurfaceComposer::eDestroyBackbuffer));
-
-            // the dirty region we report to surfaceflinger is the one
-            // given by the user (as opposed to the one *we* return to the
-            // user).
-            mDirtyRegion = newDirtyRegion;
-
-            if (canCopyBack) {
-                // copy the area that is invalid and not repainted this round
-                const Region copyback(mOldDirtyRegion.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 = boundsRegion;
-            }
-
-            // keep track of the are of the buffer that is "clean"
-            // (ie: that will be redrawn)
-            mOldDirtyRegion = newDirtyRegion;
-
-            void* vaddr;
-            status_t res = backBuffer->lock(
-                    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
-                    newDirtyRegion.bounds(), &vaddr);
-            
-            LOGW_IF(res, "failed locking buffer (handle = %p)", 
-                    backBuffer->handle);
-
-            mLockedBuffer = backBuffer;
-            other->w      = backBuffer->width;
-            other->h      = backBuffer->height;
-            other->s      = backBuffer->stride;
-            other->usage  = backBuffer->usage;
-            other->format = backBuffer->format;
-            other->bits   = vaddr;
-        }
+        other->w = uint32_t(outBuffer.width);
+        other->h = uint32_t(outBuffer.height);
+        other->s = uint32_t(outBuffer.stride);
+        other->usage = GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN;
+        other->format = uint32_t(outBuffer.format);
+        other->bits = outBuffer.bits;
     }
-    mApiLock.unlock();
     return err;
 }
-    
-status_t Surface::unlockAndPost() 
-{
-    if (mLockedBuffer == 0) {
-        LOGE("Surface::unlockAndPost failed, no locked buffer");
-        return INVALID_OPERATION;
-    }
 
-    status_t err = mLockedBuffer->unlock();
-    LOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
-    
-    err = mSurfaceTextureClient->queueBuffer(mLockedBuffer.get());
-    LOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
-            mLockedBuffer->handle, strerror(-err));
-
-    mPostedBuffer = mLockedBuffer;
-    mLockedBuffer = 0;
-    return err;
+status_t Surface::unlockAndPost() {
+    return SurfaceTextureClient::unlockAndPost();
 }
 
 // ----------------------------------------------------------------------------
diff --git a/libs/gui/SurfaceTexture.cpp b/libs/gui/SurfaceTexture.cpp
index 1410481..3ab6c79 100644
--- a/libs/gui/SurfaceTexture.cpp
+++ b/libs/gui/SurfaceTexture.cpp
@@ -90,6 +90,7 @@
     mCurrentTransform(0),
     mCurrentTimestamp(0),
     mNextTransform(0),
+    mNextScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
     mTexName(tex),
     mSynchronousMode(false),
     mAllowSynchronousMode(allowSynchronousMode),
@@ -453,6 +454,7 @@
         mSlots[buf].mBufferState = BufferSlot::QUEUED;
         mSlots[buf].mCrop = mNextCrop;
         mSlots[buf].mTransform = mNextTransform;
+        mSlots[buf].mScalingMode = mNextScalingMode;
         mSlots[buf].mTimestamp = timestamp;
         mDequeueCondition.signal();
     } // scope for the lock
@@ -495,7 +497,7 @@
 }
 
 status_t SurfaceTexture::connect(int api) {
-    LOGV("SurfaceTexture::connect");
+    LOGV("SurfaceTexture::connect(this=%p, %d)", this, api);
     Mutex::Autolock lock(mMutex);
     int err = NO_ERROR;
     switch (api) {
@@ -504,6 +506,8 @@
         case NATIVE_WINDOW_API_MEDIA:
         case NATIVE_WINDOW_API_CAMERA:
             if (mConnectedApi != NO_CONNECTED_API) {
+                LOGE("connect: already connected (cur=%d, req=%d)",
+                        mConnectedApi, api);
                 err = -EINVAL;
             } else {
                 mConnectedApi = api;
@@ -517,7 +521,7 @@
 }
 
 status_t SurfaceTexture::disconnect(int api) {
-    LOGV("SurfaceTexture::disconnect");
+    LOGV("SurfaceTexture::disconnect(this=%p, %d)", this, api);
     Mutex::Autolock lock(mMutex);
     int err = NO_ERROR;
     switch (api) {
@@ -528,6 +532,8 @@
             if (mConnectedApi == api) {
                 mConnectedApi = NO_CONNECTED_API;
             } else {
+                LOGE("disconnect: connected to another api (cur=%d, req=%d)",
+                        mConnectedApi, api);
                 err = -EINVAL;
             }
             break;
@@ -538,6 +544,22 @@
     return err;
 }
 
+status_t SurfaceTexture::setScalingMode(int mode) {
+    LOGV("SurfaceTexture::setScalingMode(%d)", mode);
+
+    switch (mode) {
+        case NATIVE_WINDOW_SCALING_MODE_FREEZE:
+        case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
+            break;
+        default:
+            return BAD_VALUE;
+    }
+
+    Mutex::Autolock lock(mMutex);
+    mNextScalingMode = mode;
+    return OK;
+}
+
 status_t SurfaceTexture::updateTexImage() {
     LOGV("SurfaceTexture::updateTexImage");
     Mutex::Autolock lock(mMutex);
@@ -598,6 +620,7 @@
         mCurrentTextureBuf = mSlots[buf].mGraphicBuffer;
         mCurrentCrop = mSlots[buf].mCrop;
         mCurrentTransform = mSlots[buf].mTransform;
+        mCurrentScalingMode = mSlots[buf].mScalingMode;
         mCurrentTimestamp = mSlots[buf].mTimestamp;
         computeCurrentTransformMatrix();
 
@@ -805,6 +828,11 @@
     return mCurrentTransform;
 }
 
+uint32_t SurfaceTexture::getCurrentScalingMode() const {
+    Mutex::Autolock lock(mMutex);
+    return mCurrentScalingMode;
+}
+
 int SurfaceTexture::query(int what, int* outValue)
 {
     Mutex::Autolock lock(mMutex);
diff --git a/libs/gui/SurfaceTextureClient.cpp b/libs/gui/SurfaceTextureClient.cpp
index f39cabf..68475e9 100644
--- a/libs/gui/SurfaceTextureClient.cpp
+++ b/libs/gui/SurfaceTextureClient.cpp
@@ -24,24 +24,45 @@
 namespace android {
 
 SurfaceTextureClient::SurfaceTextureClient(
-        const sp<ISurfaceTexture>& surfaceTexture):
-        mSurfaceTexture(surfaceTexture), mAllocator(0), mReqWidth(0),
-        mReqHeight(0), mReqFormat(0), mReqUsage(0),
-        mTimestamp(NATIVE_WINDOW_TIMESTAMP_AUTO),
-        mQueryWidth(0), mQueryHeight(0), mQueryFormat(0),
-        mMutex() {
+        const sp<ISurfaceTexture>& surfaceTexture)
+{
+    SurfaceTextureClient::init();
+    SurfaceTextureClient::setISurfaceTexture(surfaceTexture);
+}
+
+SurfaceTextureClient::SurfaceTextureClient() {
+    SurfaceTextureClient::init();
+}
+
+void SurfaceTextureClient::init() {
     // Initialize the ANativeWindow function pointers.
-    ANativeWindow::setSwapInterval  = setSwapInterval;
-    ANativeWindow::dequeueBuffer    = dequeueBuffer;
-    ANativeWindow::cancelBuffer     = cancelBuffer;
-    ANativeWindow::lockBuffer       = lockBuffer;
-    ANativeWindow::queueBuffer      = queueBuffer;
-    ANativeWindow::query            = query;
-    ANativeWindow::perform          = perform;
+    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;
 
     const_cast<int&>(ANativeWindow::minSwapInterval) = 0;
     const_cast<int&>(ANativeWindow::maxSwapInterval) = 1;
 
+    mReqWidth = 0;
+    mReqHeight = 0;
+    mReqFormat = 0;
+    mReqUsage = 0;
+    mTimestamp = NATIVE_WINDOW_TIMESTAMP_AUTO;
+    mQueryWidth = 0;
+    mQueryHeight = 0;
+    mQueryFormat = 0;
+    mConnectedToCpu = false;
+}
+
+void SurfaceTextureClient::setISurfaceTexture(
+        const sp<ISurfaceTexture>& surfaceTexture)
+{
+    mSurfaceTexture = surfaceTexture;
+
     // Get a reference to the allocator.
     mAllocator = mSurfaceTexture->getAllocator();
 }
@@ -50,42 +71,42 @@
     return mSurfaceTexture;
 }
 
-int SurfaceTextureClient::setSwapInterval(ANativeWindow* window, int interval) {
+int SurfaceTextureClient::hook_setSwapInterval(ANativeWindow* window, int interval) {
     SurfaceTextureClient* c = getSelf(window);
     return c->setSwapInterval(interval);
 }
 
-int SurfaceTextureClient::dequeueBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_dequeueBuffer(ANativeWindow* window,
         ANativeWindowBuffer** buffer) {
     SurfaceTextureClient* c = getSelf(window);
     return c->dequeueBuffer(buffer);
 }
 
-int SurfaceTextureClient::cancelBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_cancelBuffer(ANativeWindow* window,
         ANativeWindowBuffer* buffer) {
     SurfaceTextureClient* c = getSelf(window);
     return c->cancelBuffer(buffer);
 }
 
-int SurfaceTextureClient::lockBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_lockBuffer(ANativeWindow* window,
         ANativeWindowBuffer* buffer) {
     SurfaceTextureClient* c = getSelf(window);
     return c->lockBuffer(buffer);
 }
 
-int SurfaceTextureClient::queueBuffer(ANativeWindow* window,
+int SurfaceTextureClient::hook_queueBuffer(ANativeWindow* window,
         ANativeWindowBuffer* buffer) {
     SurfaceTextureClient* c = getSelf(window);
     return c->queueBuffer(buffer);
 }
 
-int SurfaceTextureClient::query(const ANativeWindow* window,
+int SurfaceTextureClient::hook_query(const ANativeWindow* window,
                                 int what, int* value) {
     const SurfaceTextureClient* c = getSelf(window);
     return c->query(what, value);
 }
 
-int SurfaceTextureClient::perform(ANativeWindow* window, int operation, ...) {
+int SurfaceTextureClient::hook_perform(ANativeWindow* window, int operation, ...) {
     va_list args;
     va_start(args, operation);
     SurfaceTextureClient* c = getSelf(window);
@@ -219,7 +240,6 @@
         *value = 0;
         return NO_ERROR;
     case NATIVE_WINDOW_CONCRETE_TYPE:
-        // TODO: this is not needed anymore
         *value = NATIVE_WINDOW_SURFACE_TEXTURE_CLIENT;
         return NO_ERROR;
     }
@@ -260,6 +280,15 @@
     case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
         res = dispatchSetBuffersFormat(args);
         break;
+    case NATIVE_WINDOW_LOCK:
+        res = dispatchLock(args);
+        break;
+    case NATIVE_WINDOW_UNLOCK_AND_POST:
+        res = dispatchUnlockAndPost(args);
+        break;
+    case NATIVE_WINDOW_SET_SCALING_MODE:
+        res = dispatchSetScalingMode(args);
+        break;
     default:
         res = NAME_NOT_FOUND;
         break;
@@ -314,6 +343,11 @@
     return setBuffersFormat(f);
 }
 
+int SurfaceTextureClient::dispatchSetScalingMode(va_list args) {
+    int m = va_arg(args, int);
+    return setScalingMode(m);
+}
+
 int SurfaceTextureClient::dispatchSetBuffersTransform(va_list args) {
     int transform = va_arg(args, int);
     return setBuffersTransform(transform);
@@ -324,28 +358,37 @@
     return setBuffersTimestamp(timestamp);
 }
 
+int SurfaceTextureClient::dispatchLock(va_list args) {
+    ANativeWindow_Buffer* outBuffer = va_arg(args, ANativeWindow_Buffer*);
+    ARect* inOutDirtyBounds = va_arg(args, ARect*);
+    return lock(outBuffer, inOutDirtyBounds);
+}
+
+int SurfaceTextureClient::dispatchUnlockAndPost(va_list args) {
+    return unlockAndPost();
+}
+
+
 int SurfaceTextureClient::connect(int api) {
     LOGV("SurfaceTextureClient::connect");
     Mutex::Autolock lock(mMutex);
-    return mSurfaceTexture->connect(api);
+    int err = mSurfaceTexture->connect(api);
+    if (!err && api == NATIVE_WINDOW_API_CPU) {
+        mConnectedToCpu = true;
+    }
+    return err;
 }
 
 int SurfaceTextureClient::disconnect(int api) {
     LOGV("SurfaceTextureClient::disconnect");
     Mutex::Autolock lock(mMutex);
-    return mSurfaceTexture->disconnect(api);
+    int err = mSurfaceTexture->disconnect(api);
+    if (!err && api == NATIVE_WINDOW_API_CPU) {
+        mConnectedToCpu = false;
+    }
+    return err;
 }
 
-int SurfaceTextureClient::getConnectedApi() const
-{
-    // XXX: This method will be going away shortly, and is currently bogus.  It
-    // always returns "nothing is connected".  It will go away once Surface gets
-    // updated to actually connect as the 'CPU' API when locking a buffer.
-    Mutex::Autolock lock(mMutex);
-    return 0;
-}
-
-
 int SurfaceTextureClient::setUsage(uint32_t reqUsage)
 {
     LOGV("SurfaceTextureClient::setUsage");
@@ -421,6 +464,18 @@
     return NO_ERROR;
 }
 
+int SurfaceTextureClient::setScalingMode(int mode)
+{
+    LOGV("SurfaceTextureClient::setScalingMode(%d)", mode);
+    Mutex::Autolock lock(mMutex);
+    // mode is validated on the server
+    status_t err = mSurfaceTexture->setScalingMode(mode);
+    LOGE_IF(err, "ISurfaceTexture::setScalingMode(%d) returned %s",
+            mode, strerror(-err));
+
+    return err;
+}
+
 int SurfaceTextureClient::setBuffersTransform(int transform)
 {
     LOGV("SurfaceTextureClient::setBuffersTransform");
@@ -443,4 +498,160 @@
     }
 }
 
+// ----------------------------------------------------------------------
+// the lock/unlock APIs must be used from the same thread
+
+static status_t copyBlt(
+        const sp<GraphicBuffer>& dst,
+        const sp<GraphicBuffer>& src,
+        const Region& reg)
+{
+    // src and dst with, height and format must be identical. no verification
+    // is done here.
+    status_t err;
+    uint8_t const * src_bits = NULL;
+    err = src->lock(GRALLOC_USAGE_SW_READ_OFTEN, reg.bounds(), (void**)&src_bits);
+    LOGE_IF(err, "error locking src buffer %s", strerror(-err));
+
+    uint8_t* dst_bits = NULL;
+    err = dst->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, reg.bounds(), (void**)&dst_bits);
+    LOGE_IF(err, "error locking dst buffer %s", strerror(-err));
+
+    Region::const_iterator head(reg.begin());
+    Region::const_iterator tail(reg.end());
+    if (head != tail && src_bits && dst_bits) {
+        const size_t bpp = bytesPerPixel(src->format);
+        const size_t dbpr = dst->stride * bpp;
+        const size_t sbpr = src->stride * bpp;
+
+        while (head != tail) {
+            const Rect& r(*head++);
+            ssize_t h = r.height();
+            if (h <= 0) continue;
+            size_t size = r.width() * bpp;
+            uint8_t const * s = src_bits + (r.left + src->stride * r.top) * bpp;
+            uint8_t       * d = dst_bits + (r.left + dst->stride * r.top) * bpp;
+            if (dbpr==sbpr && size==sbpr) {
+                size *= h;
+                h = 1;
+            }
+            do {
+                memcpy(d, s, size);
+                d += dbpr;
+                s += sbpr;
+            } while (--h > 0);
+        }
+    }
+
+    if (src_bits)
+        src->unlock();
+
+    if (dst_bits)
+        dst->unlock();
+
+    return err;
+}
+
+// ----------------------------------------------------------------------------
+
+status_t SurfaceTextureClient::lock(
+        ANativeWindow_Buffer* outBuffer, ARect* inOutDirtyBounds)
+{
+    if (mLockedBuffer != 0) {
+        LOGE("Surface::lock failed, already locked");
+        return INVALID_OPERATION;
+    }
+
+    if (!mConnectedToCpu) {
+        int err = SurfaceTextureClient::connect(NATIVE_WINDOW_API_CPU);
+        if (err) {
+            return err;
+        }
+        // we're intending to do software rendering from this point
+        setUsage(GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN);
+    }
+
+    ANativeWindowBuffer* out;
+    status_t err = dequeueBuffer(&out);
+    LOGE_IF(err, "dequeueBuffer failed (%s)", strerror(-err));
+    if (err == NO_ERROR) {
+        sp<GraphicBuffer> backBuffer(GraphicBuffer::getSelf(out));
+        err = lockBuffer(backBuffer.get());
+        LOGE_IF(err, "lockBuffer (handle=%p) failed (%s)",
+                backBuffer->handle, strerror(-err));
+        if (err == NO_ERROR) {
+            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(mOldDirtyRegion.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);
+            }
+
+            // keep track of the are of the buffer that is "clean"
+            // (ie: that will be redrawn)
+            mOldDirtyRegion = newDirtyRegion;
+
+            if (inOutDirtyBounds) {
+                *inOutDirtyBounds = newDirtyRegion.getBounds();
+            }
+
+            void* vaddr;
+            status_t res = backBuffer->lock(
+                    GRALLOC_USAGE_SW_READ_OFTEN | GRALLOC_USAGE_SW_WRITE_OFTEN,
+                    newDirtyRegion.bounds(), &vaddr);
+
+            LOGW_IF(res, "failed locking buffer (handle = %p)",
+                    backBuffer->handle);
+
+            mLockedBuffer = backBuffer;
+            outBuffer->width  = backBuffer->width;
+            outBuffer->height = backBuffer->height;
+            outBuffer->stride = backBuffer->stride;
+            outBuffer->format = backBuffer->format;
+            outBuffer->bits   = vaddr;
+        }
+    }
+    return err;
+}
+
+status_t SurfaceTextureClient::unlockAndPost()
+{
+    if (mLockedBuffer == 0) {
+        LOGE("Surface::unlockAndPost failed, no locked buffer");
+        return INVALID_OPERATION;
+    }
+
+    status_t err = mLockedBuffer->unlock();
+    LOGE_IF(err, "failed unlocking buffer (%p)", mLockedBuffer->handle);
+
+    err = queueBuffer(mLockedBuffer.get());
+    LOGE_IF(err, "queueBuffer (handle=%p) failed (%s)",
+            mLockedBuffer->handle, strerror(-err));
+
+    mPostedBuffer = mLockedBuffer;
+    mLockedBuffer = 0;
+    return err;
+}
+
 }; // namespace android
diff --git a/libs/gui/tests/SurfaceTextureClient_test.cpp b/libs/gui/tests/SurfaceTextureClient_test.cpp
index 519b40e..2b8f204 100644
--- a/libs/gui/tests/SurfaceTextureClient_test.cpp
+++ b/libs/gui/tests/SurfaceTextureClient_test.cpp
@@ -613,4 +613,90 @@
     }
 }
 
+class MultiSurfaceTextureClientTest : public ::testing::Test {
+
+public:
+    MultiSurfaceTextureClientTest() :
+            mEglDisplay(EGL_NO_DISPLAY),
+            mEglContext(EGL_NO_CONTEXT) {
+        for (int i = 0; i < NUM_SURFACE_TEXTURES; i++) {
+            mEglSurfaces[i] = EGL_NO_CONTEXT;
+        }
+    }
+
+protected:
+
+    enum { NUM_SURFACE_TEXTURES = 32 };
+
+    virtual void SetUp() {
+        mEglDisplay = eglGetDisplay(EGL_DEFAULT_DISPLAY);
+        ASSERT_EQ(EGL_SUCCESS, eglGetError());
+        ASSERT_NE(EGL_NO_DISPLAY, mEglDisplay);
+
+        EGLint majorVersion, minorVersion;
+        EXPECT_TRUE(eglInitialize(mEglDisplay, &majorVersion, &minorVersion));
+        ASSERT_EQ(EGL_SUCCESS, eglGetError());
+
+        EGLConfig myConfig;
+        EGLint numConfigs = 0;
+        EGLint configAttribs[] = {
+            EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+            EGL_NONE
+        };
+        EXPECT_TRUE(eglChooseConfig(mEglDisplay, configAttribs, &myConfig, 1,
+                &numConfigs));
+        ASSERT_EQ(EGL_SUCCESS, eglGetError());
+
+        mEglContext = eglCreateContext(mEglDisplay, myConfig, EGL_NO_CONTEXT,
+                0);
+        ASSERT_EQ(EGL_SUCCESS, eglGetError());
+        ASSERT_NE(EGL_NO_CONTEXT, mEglContext);
+
+        for (int i = 0; i < NUM_SURFACE_TEXTURES; i++) {
+            sp<SurfaceTexture> st(new SurfaceTexture(i));
+            sp<SurfaceTextureClient> stc(new SurfaceTextureClient(st));
+            mEglSurfaces[i] = eglCreateWindowSurface(mEglDisplay, myConfig,
+                    static_cast<ANativeWindow*>(stc.get()), NULL);
+            ASSERT_EQ(EGL_SUCCESS, eglGetError());
+            ASSERT_NE(EGL_NO_SURFACE, mEglSurfaces[i]);
+        }
+    }
+
+    virtual void TearDown() {
+        eglMakeCurrent(mEglDisplay, EGL_NO_SURFACE, EGL_NO_SURFACE,
+                EGL_NO_CONTEXT);
+
+        for (int i = 0; i < NUM_SURFACE_TEXTURES; i++) {
+            if (mEglSurfaces[i] != EGL_NO_SURFACE) {
+                eglDestroySurface(mEglDisplay, mEglSurfaces[i]);
+            }
+        }
+
+        if (mEglContext != EGL_NO_CONTEXT) {
+            eglDestroyContext(mEglDisplay, mEglContext);
+        }
+
+        if (mEglDisplay != EGL_NO_DISPLAY) {
+            eglTerminate(mEglDisplay);
+        }
+    }
+
+    EGLDisplay mEglDisplay;
+    EGLSurface mEglSurfaces[NUM_SURFACE_TEXTURES];
+    EGLContext mEglContext;
+};
+
+// XXX: This test is disabled because it causes a hang on some devices.  See bug
+// 5015672.
+TEST_F(MultiSurfaceTextureClientTest, DISABLED_MakeCurrentBetweenSurfacesWorks) {
+    for (int iter = 0; iter < 8; iter++) {
+        for (int i = 0; i < NUM_SURFACE_TEXTURES; i++) {
+            eglMakeCurrent(mEglDisplay, mEglSurfaces[i], mEglSurfaces[i],
+                    mEglContext);
+            glClear(GL_COLOR_BUFFER_BIT);
+            eglSwapBuffers(mEglDisplay, mEglSurfaces[i]);
+        }
+    }
+}
+
 } // namespace android
diff --git a/libs/ui/FramebufferNativeWindow.cpp b/libs/ui/FramebufferNativeWindow.cpp
index 9c10c75..e2772a7 100644
--- a/libs/ui/FramebufferNativeWindow.cpp
+++ b/libs/ui/FramebufferNativeWindow.cpp
@@ -299,14 +299,38 @@
 {
     switch (operation) {
         case NATIVE_WINDOW_SET_USAGE:
-        case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
+            // TODO: we should implement this
+            return NO_ERROR;
         case NATIVE_WINDOW_CONNECT:
+            // TODO: we should implement this
+            return NO_ERROR;
         case NATIVE_WINDOW_DISCONNECT:
-            break;
-        default:
-            return NAME_NOT_FOUND;
+            // TODO: we should implement this
+            return NO_ERROR;
+        case NATIVE_WINDOW_LOCK:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_UNLOCK_AND_POST:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_CROP:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFER_COUNT:
+            // TODO: we should implement this
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
+            return INVALID_OPERATION;
+        case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
+            // TODO: we should implement this
+            return NO_ERROR;
+        case NATIVE_WINDOW_SET_SCALING_MODE:
+            return INVALID_OPERATION;
     }
-    return NO_ERROR;
+    return NAME_NOT_FOUND;
 }
 
 // ----------------------------------------------------------------------------
diff --git a/opengl/include/EGL/eglext.h b/opengl/include/EGL/eglext.h
index 1123e16..6a199db 100644
--- a/opengl/include/EGL/eglext.h
+++ b/opengl/include/EGL/eglext.h
@@ -226,7 +226,7 @@
 #ifndef EGL_ANDROID_image_native_buffer
 #define EGL_ANDROID_image_native_buffer 1
 struct ANativeWindowBuffer;
-#define EGL_NATIVE_BUFFER_ANDROID       0x3140  /* eglCreateImageKHR target */
+#define EGL_NATIVE_BUFFER_ANDROID               0x3140  /* eglCreateImageKHR target */
 #endif
 
 #ifndef EGL_ANDROID_swap_rectangle
@@ -237,6 +237,11 @@
 typedef EGLBoolean (EGLAPIENTRYP PFNEGLSETSWAPRECTANGLEANDROIDPROC) (EGLDisplay dpy, EGLSurface draw, EGLint left, EGLint top, EGLint width, EGLint height);
 #endif
 
+#ifndef EGL_ANDROID_recordable
+#define EGL_ANDROID_recordable 1
+#define EGL_RECORDABLE_ANDROID                  0x3142  /* EGLConfig attribute */
+#endif
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/opengl/specs/EGL_ANDROID_recordable.txt b/opengl/specs/EGL_ANDROID_recordable.txt
index cf44465..8dbd26f 100644
--- a/opengl/specs/EGL_ANDROID_recordable.txt
+++ b/opengl/specs/EGL_ANDROID_recordable.txt
@@ -55,7 +55,7 @@
     Accepted by the <attribute> parameter of eglGetConfigAttrib and
     the <attrib_list> parameter of eglChooseConfig:
 
-        EGL_RECORDABLE_ANDROID                      0xXXXX
+        EGL_RECORDABLE_ANDROID                      0x3142
 
 Changes to Chapter 3 of the EGL 1.4 Specification (EGL Functions and Errors)
 
@@ -103,11 +103,38 @@
 
     RESOLVED: It should not affect sorting.  Some implementations may not have
     any drawback associated with using a recordable EGLConfig.  Such
-    implementations should not have to double-up some of their configs to  one sort earlier than .
-    Implementations that do have drawbacks can use the existing caveat
-    mechanism to report this drawback to the client.
+    implementations should not have to double-up some of their configs to  one
+    sort earlier than .  Implementations that do have drawbacks can use the
+    existing caveat mechanism to report this drawback to the client.
+
+    3. How is this extension expected to be implemented?
+
+    RESPONSE: There are two basic approaches to implementing this extension
+    that were considered during its design.  In both cases it is assumed that a
+    color space conversion must be performed at some point because most video
+    encoding formats use a YUV color space.  The two approaches are
+    distinguished by the point at which this color space conversion is
+    performed.
+
+    One approach involves performing the color space conversion as part of the
+    eglSwapBuffers call before queuing the rendered image to the ANativeWindow.
+    In this case, the VisualID of the EGLConfig would correspond to a YUV
+    Android HAL pixel format from which the video encoder can read.  The
+    EGLConfig would likely have the EGL_SLOW_CONFIG caveat because using that
+    config to render normal window contents would result in an RGB -> YUV color
+    space conversion when rendering the frame as well as a YUV -> RGB
+    conversion when compositing the window.
+
+    The other approach involves performing the color space conversion in the
+    video encoder.  In this case, the VisualID of the EGLConfig would
+    correspond to an RGB HAL pixel format from which the video encoder can
+    read.  The EGLConfig would likely not need to have any caveat set, as using
+    this config for normal window rendering would not have any added cost.
 
 Revision History
 
+#2 (Jamie Gennis, July 15, 2011)
+    - Added issue 3.
+
 #1 (Jamie Gennis, July 8, 2011)
     - Initial draft.
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index f3b6c4d..c29aeca 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -56,14 +56,14 @@
         mTextureName(-1U),
         mQueuedFrames(0),
         mCurrentTransform(0),
+        mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
         mCurrentOpacity(true),
         mFormat(PIXEL_FORMAT_NONE),
         mGLExtensions(GLExtensions::getInstance()),
         mOpaqueLayer(true),
         mNeedsDithering(false),
         mSecure(false),
-        mProtectedByApp(false),
-        mFixedSize(false)
+        mProtectedByApp(false)
 {
     mCurrentCrop.makeInvalid();
     glGenTextures(1, &mTextureName);
@@ -400,14 +400,7 @@
 }
 
 bool Layer::isFixedSize() const {
-    Mutex::Autolock _l(mLock);
-    return mFixedSize;
-}
-
-void Layer::setFixedSize(bool fixedSize)
-{
-    Mutex::Autolock _l(mLock);
-    mFixedSize = fixedSize;
+    return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
 }
 
 bool Layer::isCropped() const {
@@ -437,9 +430,14 @@
 
         const Rect crop(mSurfaceTexture->getCurrentCrop());
         const uint32_t transform(mSurfaceTexture->getCurrentTransform());
-        if ((crop != mCurrentCrop) || (transform != mCurrentTransform)) {
+        const uint32_t scalingMode(mSurfaceTexture->getCurrentScalingMode());
+        if ((crop != mCurrentCrop) ||
+            (transform != mCurrentTransform) ||
+            (scalingMode != mCurrentScalingMode))
+        {
             mCurrentCrop = crop;
             mCurrentTransform = transform;
+            mCurrentScalingMode = scalingMode;
             mFlinger->invalidateHwcGeometry();
         }
 
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index e3fc13d..ddfc666 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -59,7 +59,6 @@
     status_t setBuffers(uint32_t w, uint32_t h, 
             PixelFormat format, uint32_t flags=0);
 
-    // Set this Layer's buffers size
     bool isFixedSize() const;
 
     // LayerBase interface
@@ -88,7 +87,6 @@
     void onFrameQueued();
     virtual sp<ISurface> createSurface();
     uint32_t getEffectiveUsage(uint32_t usage) const;
-    void setFixedSize(bool fixedSize);
     bool isCropped() const;
     static bool getOpacityForFormat(uint32_t format);
 
@@ -106,6 +104,7 @@
     GLfloat mTextureMatrix[16];
     Rect mCurrentCrop;
     uint32_t mCurrentTransform;
+    uint32_t mCurrentScalingMode;
     bool mCurrentOpacity;
 
     // constants
@@ -124,7 +123,6 @@
 
     // binder thread, transaction thread
     mutable Mutex mLock;
-    bool mFixedSize;
 };
 
 // ---------------------------------------------------------------------------
diff --git a/services/surfaceflinger/SurfaceTextureLayer.cpp b/services/surfaceflinger/SurfaceTextureLayer.cpp
index 60fa965..a586d59 100644
--- a/services/surfaceflinger/SurfaceTextureLayer.cpp
+++ b/services/surfaceflinger/SurfaceTextureLayer.cpp
@@ -64,9 +64,6 @@
         //LOGD("%s, w=%u, h=%u, format=%u, usage=%08x, effectiveUsage=%08x",
         //        __PRETTY_FUNCTION__, w, h, format, usage, effectiveUsage);
         res = SurfaceTexture::dequeueBuffer(buf, w, h, format, effectiveUsage);
-        if (res == NO_ERROR) {
-            layer->setFixedSize(w && h);
-        }
     }
     return res;
 }