diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index c8c3e7f7f..bf1a9490c 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -545,6 +545,7 @@ add_library(core STATIC
     hle/service/nvflinger/ui/fence.h
     hle/service/nvflinger/ui/graphic_buffer.h
     hle/service/nvflinger/ui/rect.h
+    hle/service/nvflinger/window.h
     hle/service/olsc/olsc.cpp
     hle/service/olsc/olsc.h
     hle/service/pcie/pcie.cpp
diff --git a/src/core/hle/service/nvflinger/window.h b/src/core/hle/service/nvflinger/window.h
new file mode 100644
index 000000000..17f36da20
--- /dev/null
+++ b/src/core/hle/service/nvflinger/window.h
@@ -0,0 +1,53 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+// Copyright 2021 yuzu Emulator Project
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace android {
+
+/// Attributes queryable with Query
+enum class NativeWindow : s32 {
+    Width = 0,
+    Height = 1,
+    Format = 2,
+    MinUndequeedBuffers = 3,
+    QueuesToWindowComposer = 4,
+    ConcreteType = 5,
+    DefaultWidth = 6,
+    DefaultHeight = 7,
+    TransformHint = 8,
+    ConsumerRunningBehind = 9,
+    ConsumerUsageBits = 10,
+    StickyTransform = 11,
+    DefaultDataSpace = 12,
+    BufferAge = 13,
+};
+
+/// Parameter for Connect/Disconnect
+enum class NativeWindowApi : s32 {
+    NoConnectedApi = 0,
+    Egl = 1,
+    Cpu = 2,
+    Media = 3,
+    Camera = 4,
+};
+
+/// Scaling mode parameter for QueueBuffer
+enum class NativeWindowScalingMode : s32 {
+    Freeze = 0,
+    ScaleToWindow = 1,
+    ScaleCrop = 2,
+    NoScaleCrop = 3,
+};
+
+/// Transform parameter for QueueBuffer
+enum class NativeWindowTransform : u32 {
+    None = 0x0,
+    InverseDisplay = 0x08,
+};
+DECLARE_ENUM_FLAG_OPERATORS(NativeWindowTransform);
+
+} // namespace android