diff --git a/services/surfaceflinger/BufferQueueLayer.h b/services/surfaceflinger/BufferQueueLayer.h
new file mode 100644
index 0000000..7454e20
--- /dev/null
+++ b/services/surfaceflinger/BufferQueueLayer.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "BufferLayer.h"
+
+#include <utils/String8.h>
+
+namespace android {
+
+/*
+ * A new BufferQueue and a new BufferLayerConsumer are created when the
+ * BufferLayer is first referenced.
+ *
+ * This also implements onFrameAvailable(), which notifies SurfaceFlinger
+ * that new data has arrived.
+ */
+class BufferQueueLayer : public BufferLayer, public BufferLayerConsumer::ContentsChangedListener {
+public:
+    BufferQueueLayer(SurfaceFlinger* flinger, const sp<Client>& client, const String8& name,
+                     uint32_t w, uint32_t h, uint32_t flags);
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for Layer
+    // -----------------------------------------------------------------------
+public:
+    void onLayerDisplayed(const sp<Fence>& releaseFence) override;
+
+    void abandon() override;
+
+    void setTransformHint(uint32_t orientation) const override;
+
+    std::vector<OccupancyTracker::Segment> getOccupancyHistory(bool forceFlush) override;
+
+    bool getTransformToDisplayInverse() const override;
+
+    // If a buffer was replaced this frame, release the former buffer
+    void releasePendingBuffer(nsecs_t dequeueReadyTime) override;
+
+    void setDefaultBufferSize(uint32_t w, uint32_t h) override;
+
+    int32_t getQueuedFrameCount() const override;
+
+    bool shouldPresentNow(const DispSync& dispSync) const override;
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayer
+    // -----------------------------------------------------------------------
+public:
+    bool fenceHasSignaled() const override;
+
+private:
+    nsecs_t getDesiredPresentTime() override;
+    std::shared_ptr<FenceTime> getCurrentFenceTime() const override;
+
+    void getDrawingTransformMatrix(float matrix[16]) const override;
+    uint32_t getDrawingTransform() const override;
+    ui::Dataspace getDrawingDataSpace() const override;
+    Rect getDrawingCrop() const override;
+    uint32_t getDrawingScalingMode() const override;
+    Region getDrawingSurfaceDamage() const override;
+    const HdrMetadata& getDrawingHdrMetadata() const override;
+    int getDrawingApi() const override;
+    PixelFormat getPixelFormat() const override;
+
+    uint64_t getFrameNumber() const override;
+
+    bool getAutoRefresh() const override;
+    bool getSidebandStreamChanged() const override;
+
+    std::optional<Region> latchSidebandStream(bool& recomputeVisibleRegions) override;
+
+    bool hasDrawingBuffer() const override;
+
+    void setFilteringEnabled(bool enabled) const override;
+
+    status_t bindTextureImage() const override;
+    status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime) override;
+
+    status_t updateActiveBuffer() override;
+    status_t updateFrameNumber(nsecs_t latchTime) override;
+
+    void setHwcLayerBuffer(const sp<const DisplayDevice>& display) override;
+    // -----------------------------------------------------------------------
+
+    // -----------------------------------------------------------------------
+    // Interface implementation for BufferLayerConsumer::ContentsChangedListener
+    // -----------------------------------------------------------------------
+protected:
+    void onFrameAvailable(const BufferItem& item) override;
+    void onFrameReplaced(const BufferItem& item) override;
+    void onSidebandStreamChanged() override;
+    // -----------------------------------------------------------------------
+
+public:
+    status_t setDefaultBufferProperties(uint32_t w, uint32_t h, PixelFormat format);
+
+    sp<IGraphicBufferProducer> getProducer() const;
+
+private:
+    // Temporary - Used only for LEGACY camera mode.
+    uint32_t getProducerStickyTransform() const;
+
+    void onFirstRef() override;
+
+    sp<BufferLayerConsumer> mConsumer;
+    sp<IGraphicBufferProducer> mProducer;
+
+    PixelFormat mFormat;
+
+    // Only accessed on the main thread.
+    uint64_t mPreviousFrameNumber;
+    bool mUpdateTexImageFailed;
+
+    // Local copy of the queued contents of the incoming BufferQueue
+    mutable Mutex mQueueItemLock;
+    Condition mQueueItemCondition;
+    Vector<BufferItem> mQueueItems;
+    std::atomic<uint64_t> mLastFrameNumberReceived;
+
+    bool mAutoRefresh;
+    int mActiveBufferSlot;
+
+    // thread-safe
+    volatile int32_t mQueuedFrames;
+    volatile int32_t mSidebandStreamChanged; // used like an atomic boolean
+};
+
+} // namespace android