diff --git a/camera/ndk/NdkCameraDevice.cpp b/camera/ndk/NdkCameraDevice.cpp
index 691996b..8211671 100644
--- a/camera/ndk/NdkCameraDevice.cpp
+++ b/camera/ndk/NdkCameraDevice.cpp
@@ -22,18 +22,11 @@
 #include <utils/Trace.h>
 
 #include <camera/NdkCameraDevice.h>
+
 #include "impl/ACameraCaptureSession.h"
 
 using namespace android::acam;
 
-bool areWindowTypesEqual(ACameraWindowType *a, ACameraWindowType *b) {
-#ifdef __ANDROID_VNDK__
-    return utils::isWindowNativeHandleEqual(a, b);
-#else
-    return a == b;
-#endif
-}
-
 EXPORT
 camera_status_t ACameraDevice_close(ACameraDevice* device) {
     ATRACE_CALL();
@@ -183,14 +176,15 @@
                 __FUNCTION__);
         return ACAMERA_ERROR_INVALID_OPERATION;
     }
-    if (areWindowTypesEqual(out->mWindow, window)) {
+    if (out->isWindowEqual(window)) {
         ALOGE("%s: Error trying to add the same window associated with the output configuration",
                 __FUNCTION__);
         return ACAMERA_ERROR_INVALID_PARAMETER;
     }
 
-    auto insert = out->mSharedWindows.insert(window);
-    camera_status_t ret = (insert.second) ? ACAMERA_OK : ACAMERA_ERROR_INVALID_PARAMETER;
+
+    bool insert = out->addSharedWindow(window);
+    camera_status_t ret = (insert) ? ACAMERA_OK : ACAMERA_ERROR_INVALID_PARAMETER;
     return ret;
 }
 
@@ -208,13 +202,13 @@
                 __FUNCTION__);
         return ACAMERA_ERROR_INVALID_OPERATION;
     }
-    if (areWindowTypesEqual(out->mWindow, window)) {
+    if (out->isWindowEqual(window)) {
         ALOGE("%s: Error trying to remove the same window associated with the output configuration",
                 __FUNCTION__);
         return ACAMERA_ERROR_INVALID_PARAMETER;
     }
 
-    auto remove = out->mSharedWindows.erase(window);
+    auto remove = out->removeSharedWindow(window);
     camera_status_t ret = (remove) ? ACAMERA_OK : ACAMERA_ERROR_INVALID_PARAMETER;
     return ret;
 }