diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index 679f44b..a6890ee 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -47,8 +47,8 @@
     ~BpSurfaceComposerClient() override;
 
     status_t createSurface(const String8& name, uint32_t width, uint32_t height, PixelFormat format,
-                           uint32_t flags, const sp<IBinder>& parent, uint32_t windowType,
-                           uint32_t ownerUid, sp<IBinder>* handle,
+                           uint32_t flags, const sp<IBinder>& parent, int32_t windowType,
+                           int32_t ownerUid, sp<IBinder>* handle,
                            sp<IGraphicBufferProducer>* gbp) override {
         return callRemote<decltype(&ISurfaceComposerClient::createSurface)>(Tag::CREATE_SURFACE,
                                                                             name, width, height,
diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 38f0eb7..3cf49d6 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -609,8 +609,8 @@
         PixelFormat format,
         uint32_t flags,
         SurfaceControl* parent,
-        uint32_t windowType,
-        uint32_t ownerUid)
+        int32_t windowType,
+        int32_t ownerUid)
 {
     sp<SurfaceControl> s;
     createSurfaceChecked(name, w, h, format, &s, flags, parent, windowType, ownerUid);
@@ -625,8 +625,8 @@
         sp<SurfaceControl>* outSurface,
         uint32_t flags,
         SurfaceControl* parent,
-        uint32_t windowType,
-        uint32_t ownerUid)
+        int32_t windowType,
+        int32_t ownerUid)
 {
     sp<SurfaceControl> sur;
     status_t err = NO_ERROR;
diff --git a/libs/gui/include/gui/ISurfaceComposerClient.h b/libs/gui/include/gui/ISurfaceComposerClient.h
index d5bbef2..8dfc99a 100644
--- a/libs/gui/include/gui/ISurfaceComposerClient.h
+++ b/libs/gui/include/gui/ISurfaceComposerClient.h
@@ -49,8 +49,8 @@
      * Requires ACCESS_SURFACE_FLINGER permission
      */
     virtual status_t createSurface(const String8& name, uint32_t w, uint32_t h, PixelFormat format,
-                                   uint32_t flags, const sp<IBinder>& parent, uint32_t windowType,
-                                   uint32_t ownerUid, sp<IBinder>* handle,
+                                   uint32_t flags, const sp<IBinder>& parent, int32_t windowType,
+                                   int32_t ownerUid, sp<IBinder>* handle,
                                    sp<IGraphicBufferProducer>* gbp) = 0;
 
     /*
diff --git a/libs/gui/include/gui/SurfaceComposerClient.h b/libs/gui/include/gui/SurfaceComposerClient.h
index 5ce20ad..b45ce4f 100644
--- a/libs/gui/include/gui/SurfaceComposerClient.h
+++ b/libs/gui/include/gui/SurfaceComposerClient.h
@@ -111,8 +111,8 @@
             PixelFormat format, // pixel-format desired
             uint32_t flags = 0, // usage flags
             SurfaceControl* parent = nullptr, // parent
-            uint32_t windowType = 0, // from WindowManager.java (STATUS_BAR, INPUT_METHOD, etc.)
-            uint32_t ownerUid = 0 // UID of the task
+            int32_t windowType = -1, // from WindowManager.java (STATUS_BAR, INPUT_METHOD, etc.)
+            int32_t ownerUid = -1 // UID of the task
     );
 
     status_t createSurfaceChecked(
@@ -123,8 +123,8 @@
             sp<SurfaceControl>* outSurface,
             uint32_t flags = 0, // usage flags
             SurfaceControl* parent = nullptr, // parent
-            uint32_t windowType = 0, // from WindowManager.java (STATUS_BAR, INPUT_METHOD, etc.)
-            uint32_t ownerUid = 0 // UID of the task
+            int32_t windowType = -1, // from WindowManager.java (STATUS_BAR, INPUT_METHOD, etc.)
+            int32_t ownerUid = -1 // UID of the task
     );
 
     //! Create a virtual display
diff --git a/services/surfaceflinger/Client.cpp b/services/surfaceflinger/Client.cpp
index 0c9f0e2..c90024b 100644
--- a/services/surfaceflinger/Client.cpp
+++ b/services/surfaceflinger/Client.cpp
@@ -143,7 +143,7 @@
 status_t Client::createSurface(
         const String8& name,
         uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
-        const sp<IBinder>& parentHandle, uint32_t windowType, uint32_t ownerUid,
+        const sp<IBinder>& parentHandle, int32_t windowType, int32_t ownerUid,
         sp<IBinder>* handle,
         sp<IGraphicBufferProducer>* gbp)
 {
@@ -180,13 +180,13 @@
         PixelFormat format;
         uint32_t flags;
         sp<Layer>* parent;
-        uint32_t windowType;
-        uint32_t ownerUid;
+        int32_t windowType;
+        int32_t ownerUid;
     public:
         MessageCreateLayer(SurfaceFlinger* flinger,
                 const String8& name, Client* client,
                 uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
-                sp<IBinder>* handle, uint32_t windowType, uint32_t ownerUid,
+                sp<IBinder>* handle, int32_t windowType, int32_t ownerUid,
                 sp<IGraphicBufferProducer>* gbp,
                 sp<Layer>* parent)
             : flinger(flinger), client(client),
diff --git a/services/surfaceflinger/Client.h b/services/surfaceflinger/Client.h
index 2aab28f..c7df9f7 100644
--- a/services/surfaceflinger/Client.h
+++ b/services/surfaceflinger/Client.h
@@ -58,7 +58,7 @@
     virtual status_t createSurface(
             const String8& name,
             uint32_t w, uint32_t h,PixelFormat format, uint32_t flags,
-            const sp<IBinder>& parent, uint32_t windowType, uint32_t ownerUid,
+            const sp<IBinder>& parent, int32_t windowType, int32_t ownerUid,
             sp<IBinder>* handle,
             sp<IGraphicBufferProducer>* gbp);
 
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index b072213..c520f54 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -555,8 +555,10 @@
     sp<Layer> parent = mDrawingParent.promote();
     if (parent.get()) {
         auto& parentState = parent->getDrawingState();
-        type = parentState.type;
-        appId = parentState.appId;
+        if (parentState.type >= 0 || parentState.appId >= 0) {
+            type = parentState.type;
+            appId = parentState.appId;
+        }
     }
 
     getBE().compositionInfo.hwc.type = type;
@@ -1378,7 +1380,7 @@
     return true;
 }
 
-void Layer::setInfo(uint32_t type, uint32_t appId) {
+void Layer::setInfo(int32_t type, int32_t appId) {
     mCurrentState.appId = appId;
     mCurrentState.type = type;
     mCurrentState.modified = true;
@@ -1983,6 +1985,8 @@
 
     layerInfo->set_queued_frames(getQueuedFrameCount());
     layerInfo->set_refresh_pending(isBufferLatched());
+    layerInfo->set_window_type(state.type);
+    layerInfo->set_app_id(state.appId);
 }
 
 void Layer::writeToProto(LayerProto* layerInfo, int32_t hwcId) {
diff --git a/services/surfaceflinger/Layer.h b/services/surfaceflinger/Layer.h
index 87f9489..029f8ac 100644
--- a/services/surfaceflinger/Layer.h
+++ b/services/surfaceflinger/Layer.h
@@ -146,8 +146,8 @@
         Region requestedTransparentRegion;
         android_dataspace dataSpace;
 
-        uint32_t appId;
-        uint32_t type;
+        int32_t appId;
+        int32_t type;
 
         // If non-null, a Surface this Surface's Z-order is interpreted relative to.
         wp<Layer> zOrderRelativeOf;
@@ -228,7 +228,7 @@
     void deferTransactionUntil(const sp<IBinder>& barrierHandle, uint64_t frameNumber);
     void deferTransactionUntil(const sp<Layer>& barrierLayer, uint64_t frameNumber);
     bool setOverrideScalingMode(int32_t overrideScalingMode);
-    void setInfo(uint32_t type, uint32_t appId);
+    void setInfo(int32_t type, int32_t appId);
     bool reparentChildren(const sp<IBinder>& layer);
     void reparentChildrenForDrawing(const sp<Layer>& layer);
     bool reparent(const sp<IBinder>& newParentHandle);
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 4d9643c..4ea7bee 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3353,7 +3353,7 @@
         const String8& name,
         const sp<Client>& client,
         uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
-        uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle,
+        int32_t windowType, int32_t ownerUid, sp<IBinder>* handle,
         sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent)
 {
     if (int32_t(w|h) < 0) {
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index c7ffea7..3b80756 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -491,7 +491,7 @@
      */
     status_t createLayer(const String8& name, const sp<Client>& client,
             uint32_t w, uint32_t h, PixelFormat format, uint32_t flags,
-            uint32_t windowType, uint32_t ownerUid, sp<IBinder>* handle,
+            int32_t windowType, int32_t ownerUid, sp<IBinder>* handle,
             sp<IGraphicBufferProducer>* gbp, sp<Layer>* parent);
 
     status_t createBufferLayer(const sp<Client>& client, const String8& name,
diff --git a/services/surfaceflinger/layerproto/LayerProtoParser.cpp b/services/surfaceflinger/layerproto/LayerProtoParser.cpp
index 7483abd..e4545e4 100644
--- a/services/surfaceflinger/layerproto/LayerProtoParser.cpp
+++ b/services/surfaceflinger/layerproto/LayerProtoParser.cpp
@@ -118,6 +118,8 @@
     layer->hwcFrame = generateRect(layerProto.hwc_frame());
     layer->hwcCrop = generateFloatRect(layerProto.hwc_crop());
     layer->hwcTransform = layerProto.hwc_transform();
+    layer->windowType = layerProto.window_type();
+    layer->appId = layerProto.app_id();
 
     return layer;
 }
@@ -309,7 +311,8 @@
     StringAppendF(&result, "      zOrderRelativeOf=%s\n",
                   zOrderRelativeOf == nullptr ? "none" : zOrderRelativeOf->name.c_str());
     StringAppendF(&result, "      activeBuffer=%s,", activeBuffer.to_string().c_str());
-    StringAppendF(&result, " queued-frames=%d, mRefreshPending=%d", queuedFrames, refreshPending);
+    StringAppendF(&result, " queued-frames=%d, mRefreshPending=%d,", queuedFrames, refreshPending);
+    StringAppendF(&result, " windowType=%d, appId=%d", windowType, appId);
 
     return result;
 }
diff --git a/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h b/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
index 4747275..4466326 100644
--- a/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
+++ b/services/surfaceflinger/layerproto/include/layerproto/LayerProtoParser.h
@@ -109,6 +109,8 @@
         LayerProtoParser::Rect hwcFrame;
         LayerProtoParser::FloatRect hwcCrop;
         int32_t hwcTransform;
+        int32_t windowType;
+        int32_t appId;
 
         std::string to_string() const;
     };
diff --git a/services/surfaceflinger/layerproto/layers.proto b/services/surfaceflinger/layerproto/layers.proto
index e232f05..6675aae 100644
--- a/services/surfaceflinger/layerproto/layers.proto
+++ b/services/surfaceflinger/layerproto/layers.proto
@@ -71,6 +71,8 @@
   optional FloatRectProto hwc_crop = 31;
   // The layer's composer backend transform
   optional int32 hwc_transform = 32;
+  optional int32 window_type = 33;
+  optional int32 app_id = 34;
 }
 
 message PositionProto {