diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 9161dbb..73f923c 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -138,6 +138,8 @@
     status_t    setLayerStack(const sp<IBinder>& id, uint32_t layerStack);
     status_t    deferTransactionUntil(const sp<IBinder>& id,
             const sp<IBinder>& handle, uint64_t frameNumber);
+    status_t    setOverrideScalingMode(const sp<IBinder>& id,
+            int32_t overrideScalingMode);
     status_t    destroySurface(const sp<IBinder>& id);
 
     status_t clearLayerFrameStats(const sp<IBinder>& token) const;
diff --git a/include/gui/SurfaceControl.h b/include/gui/SurfaceControl.h
index 35644db..bedebb6 100644
--- a/include/gui/SurfaceControl.h
+++ b/include/gui/SurfaceControl.h
@@ -77,6 +77,11 @@
     // identified by handle reaches the given frameNumber
     status_t deferTransactionUntil(sp<IBinder> handle, uint64_t frameNumber);
 
+    // Set an override scaling mode as documented in <system/window.h>
+    // the override scaling mode will take precedence over any client
+    // specified scaling mode. -1 will clear the override scaling mode.
+    status_t setOverrideScalingMode(int32_t overrideScalingMode);
+
     static status_t writeSurfaceToParcel(
             const sp<SurfaceControl>& control, Parcel* parcel);
 
diff --git a/include/private/gui/LayerState.h b/include/private/gui/LayerState.h
index 078720a..92d31d1 100644
--- a/include/private/gui/LayerState.h
+++ b/include/private/gui/LayerState.h
@@ -53,7 +53,8 @@
         eLayerStackChanged          = 0x00000080,
         eCropChanged                = 0x00000100,
         eDeferTransaction           = 0x00000200,
-        eFinalCropChanged           = 0x00000400
+        eFinalCropChanged           = 0x00000400,
+        eOverrideScalingModeChanged = 0x00000800
     };
 
     layer_state_t()
@@ -61,7 +62,8 @@
             x(0), y(0), z(0), w(0), h(0), layerStack(0),
             alpha(0), flags(0), mask(0),
             reserved(0), crop(Rect::INVALID_RECT),
-            finalCrop(Rect::INVALID_RECT), frameNumber(0)
+            finalCrop(Rect::INVALID_RECT), frameNumber(0),
+            overrideScalingMode(-1)
     {
         matrix.dsdx = matrix.dtdy = 1.0f;
         matrix.dsdy = matrix.dtdx = 0.0f;
@@ -93,6 +95,7 @@
             Rect            finalCrop;
             sp<IBinder>     handle;
             uint64_t        frameNumber;
+            int32_t         overrideScalingMode;
             // non POD must be last. see write/read
             Region          transparentRegion;
 };
diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index e43342e..d1c576e 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -41,6 +41,7 @@
     output.write(finalCrop);
     output.writeStrongBinder(handle);
     output.writeUint64(frameNumber);
+    output.writeInt32(overrideScalingMode);
     output.write(transparentRegion);
     return NO_ERROR;
 }
@@ -68,6 +69,7 @@
     input.read(finalCrop);
     handle = input.readStrongBinder();
     frameNumber = input.readUint64();
+    overrideScalingMode = input.readInt32();
     input.read(transparentRegion);
     return NO_ERROR;
 }
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 418892a..e33cc37 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -163,6 +163,8 @@
     status_t deferTransactionUntil(const sp<SurfaceComposerClient>& client,
             const sp<IBinder>& id, const sp<IBinder>& handle,
             uint64_t frameNumber);
+    status_t setOverrideScalingMode(const sp<SurfaceComposerClient>& client,
+            const sp<IBinder>& id, int32_t overrideScalingMode);
 
     void setDisplaySurface(const sp<IBinder>& token,
             const sp<IGraphicBufferProducer>& bufferProducer);
@@ -414,6 +416,33 @@
     return NO_ERROR;
 }
 
+status_t Composer::setOverrideScalingMode(
+        const sp<SurfaceComposerClient>& client,
+        const sp<IBinder>& id, int32_t overrideScalingMode) {
+    Mutex::Autolock lock(mLock);
+    layer_state_t* s = getLayerStateLocked(client, id);
+    if (!s) {
+        return BAD_INDEX;
+    }
+
+    switch (overrideScalingMode) {
+        case NATIVE_WINDOW_SCALING_MODE_FREEZE:
+        case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW:
+        case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP:
+        case NATIVE_WINDOW_SCALING_MODE_NO_SCALE_CROP:
+        case -1:
+            break;
+        default:
+            ALOGE("unknown scaling mode: %d",
+                    overrideScalingMode);
+            return BAD_VALUE;
+    }
+
+    s->what |= layer_state_t::eOverrideScalingModeChanged;
+    s->overrideScalingMode = overrideScalingMode;
+    return NO_ERROR;
+}
+
 // ---------------------------------------------------------------------------
 
 DisplayState& Composer::getDisplayStateLocked(const sp<IBinder>& token) {
@@ -650,6 +679,12 @@
     return getComposer().deferTransactionUntil(this, id, handle, frameNumber);
 }
 
+status_t SurfaceComposerClient::setOverrideScalingMode(
+        const sp<IBinder>& id, int32_t overrideScalingMode) {
+    return getComposer().setOverrideScalingMode(
+            this, id, overrideScalingMode);
+}
+
 // ----------------------------------------------------------------------------
 
 void SurfaceComposerClient::setDisplaySurface(const sp<IBinder>& token,
diff --git a/libs/gui/SurfaceControl.cpp b/libs/gui/SurfaceControl.cpp
index 184de71..314d83a 100644
--- a/libs/gui/SurfaceControl.cpp
+++ b/libs/gui/SurfaceControl.cpp
@@ -165,6 +165,12 @@
     return mClient->deferTransactionUntil(mHandle, handle, frameNumber);
 }
 
+status_t SurfaceControl::setOverrideScalingMode(int32_t overrideScalingMode) {
+    status_t err = validate();
+    if (err < 0) return err;
+    return mClient->setOverrideScalingMode(mHandle, overrideScalingMode);
+}
+
 status_t SurfaceControl::clearLayerFrameStats() const {
     status_t err = validate();
     if (err < 0) return err;
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 90ab70d..1803ee5 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -75,6 +75,7 @@
         mSidebandStreamChanged(false),
         mCurrentTransform(0),
         mCurrentScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE),
+        mOverrideScalingMode(-1),
         mCurrentOpacity(true),
         mCurrentFrameNumber(0),
         mRefreshPending(false),
@@ -1244,7 +1245,7 @@
 }
 
 bool Layer::isFixedSize() const {
-    return mCurrentScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
+    return getEffectiveScalingMode() != NATIVE_WINDOW_SCALING_MODE_FREEZE;
 }
 
 bool Layer::isCropped() const {
@@ -1403,7 +1404,8 @@
                 "            requested={ wh={%4u,%4u} }}\n"
                 "  drawing={ active   ={ wh={%4u,%4u} crop={%4d,%4d,%4d,%4d} (%4d,%4d) }\n"
                 "            requested={ wh={%4u,%4u} }}\n",
-                this, getName().string(), mCurrentTransform, mCurrentScalingMode,
+                this, getName().string(), mCurrentTransform,
+                getEffectiveScalingMode(),
                 c.active.w, c.active.h,
                 c.crop.left,
                 c.crop.top,
@@ -1580,6 +1582,20 @@
     return true;
 }
 
+bool Layer::setOverrideScalingMode(int32_t scalingMode) {
+    if (scalingMode == mOverrideScalingMode)
+        return false;
+    mOverrideScalingMode = scalingMode;
+    return true;
+}
+
+uint32_t Layer::getEffectiveScalingMode() const {
+    if (mOverrideScalingMode >= 0) {
+      return mOverrideScalingMode;
+    }
+    return mCurrentScalingMode;
+}
+
 bool Layer::setLayerStack(uint32_t layerStack) {
     if (mCurrentState.layerStack == layerStack)
         return false;
@@ -1738,14 +1754,17 @@
             bool& recomputeVisibleRegions;
             bool stickyTransformSet;
             const char* name;
+            int32_t overrideScalingMode;
 
             Reject(Layer::State& front, Layer::State& current,
                     bool& recomputeVisibleRegions, bool stickySet,
-                    const char* name)
+                    const char* name,
+                    int32_t overrideScalingMode)
                 : front(front), current(current),
                   recomputeVisibleRegions(recomputeVisibleRegions),
                   stickyTransformSet(stickySet),
-                  name(name) {
+                  name(name),
+                  overrideScalingMode(overrideScalingMode) {
             }
 
             virtual bool reject(const sp<GraphicBuffer>& buf,
@@ -1763,7 +1782,9 @@
                     swap(bufWidth, bufHeight);
                 }
 
-                bool isFixedSize = item.mScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
+                int actualScalingMode = overrideScalingMode >= 0 ?
+                        overrideScalingMode : item.mScalingMode;
+                bool isFixedSize = actualScalingMode != NATIVE_WINDOW_SCALING_MODE_FREEZE;
                 if (front.active != front.requested) {
 
                     if (isFixedSize ||
@@ -1839,7 +1860,8 @@
         };
 
         Reject r(mDrawingState, getCurrentState(), recomputeVisibleRegions,
-                getProducerStickyTransform() != 0, mName.string());
+                getProducerStickyTransform() != 0, mName.string(),
+                mOverrideScalingMode);
 
 
         // Check all of our local sync points to ensure that all transactions
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index c623672..7d085a4 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -160,6 +160,7 @@
     bool setFinalCrop(const Rect& crop);
     bool setLayerStack(uint32_t layerStack);
     void deferTransactionUntil(const sp<IBinder>& handle, uint64_t frameNumber);
+    bool setOverrideScalingMode(int32_t overrideScalingMode);
 
     // If we have received a new buffer this frame, we will pass its surface
     // damage down to hardware composer. Otherwise, we must send a region with
@@ -502,6 +503,11 @@
     void pushPendingState();
     void popPendingState(State* stateToCommit);
     bool applyPendingStates(State* stateToCommit);
+
+    // Returns mCurrentScaling mode (originating from the
+    // Client) or mOverrideScalingMode mode (originating from
+    // the Surface Controller) if set.
+    uint32_t getEffectiveScalingMode() const;
 public:
     void notifyAvailableFrames();
 private:
@@ -536,6 +542,8 @@
     Rect mCurrentCrop;
     uint32_t mCurrentTransform;
     uint32_t mCurrentScalingMode;
+    // We encode unset as -1.
+    int32_t mOverrideScalingMode;
     bool mCurrentOpacity;
     std::atomic<uint64_t> mCurrentFrameNumber;
     bool mRefreshPending;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 1f85bee..efa32a7 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -2291,6 +2291,11 @@
             // We don't trigger a traversal here because if no other state is
             // changed, we don't want this to cause any more work
         }
+        if (what & layer_state_t::eOverrideScalingModeChanged) {
+            layer->setOverrideScalingMode(s.overrideScalingMode);
+            // We don't trigger a traversal here because if no other state is
+            // changed, we don't want this to cause any more work
+        }
     }
     return flags;
 }
diff --git a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
index e9b3d99..bc20bbc 100644
--- a/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
+++ b/services/surfaceflinger/SurfaceFlinger_hwc1.cpp
@@ -2316,6 +2316,11 @@
             // We don't trigger a traversal here because if no other state is
             // changed, we don't want this to cause any more work
         }
+        if (what & layer_state_t::eOverrideScalingModeChanged) {
+            layer->setOverrideScalingMode(s.overrideScalingMode);
+            // We don't trigger a traversal here because if no other state is
+            // changed, we don't want this to cause any more work
+        }
     }
     return flags;
 }