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