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* 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
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* 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 {
explicit BufferQueueLayer(const LayerCreationArgs&);
~BufferQueueLayer() override;
// -----------------------------------------------------------------------
// Interface implementation for Layer
// -----------------------------------------------------------------------
void onLayerDisplayed(const sp<Fence>& releaseFence) 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(nsecs_t expectedPresentTime) const override;
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
// Interface implementation for BufferLayer
// -----------------------------------------------------------------------
bool fenceHasSignaled() const override;
bool framePresentTimeIsCurrent() const override;
nsecs_t getDesiredPresentTime() override;
std::shared_ptr<FenceTime> getCurrentFenceTime() const override;
void getDrawingTransformMatrix(float *matrix) 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;
bool latchSidebandStream(bool& recomputeVisibleRegions) override;
bool hasFrameUpdate() const override;
void setFilteringEnabled(bool enabled) override;
status_t bindTextureImage() 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>& displayDevice) override;
// -----------------------------------------------------------------------
// Interface implementation for BufferLayerConsumer::ContentsChangedListener
// -----------------------------------------------------------------------
void onFrameAvailable(const BufferItem& item) override;
void onFrameReplaced(const BufferItem& item) override;
void onSidebandStreamChanged() override;
// -----------------------------------------------------------------------
status_t setDefaultBufferProperties(uint32_t w, uint32_t h, PixelFormat format);
sp<IGraphicBufferProducer> getProducer() const;
// Temporary - Used only for LEGACY camera mode.
uint32_t getProducerStickyTransform() const;
void onFirstRef() override;
sp<BufferLayerConsumer> mConsumer;
sp<IGraphicBufferProducer> mProducer;
PixelFormat mFormat{PIXEL_FORMAT_NONE};
// Only accessed on the main thread.
uint64_t mPreviousFrameNumber{0};
bool mUpdateTexImageFailed{false};
// Local copy of the queued contents of the incoming BufferQueue
mutable Mutex mQueueItemLock;
Condition mQueueItemCondition;
Vector<BufferItem> mQueueItems;
std::atomic<uint64_t> mLastFrameNumberReceived{0};
bool mAutoRefresh{false};
int mActiveBufferSlot{BufferQueue::INVALID_BUFFER_SLOT};
// thread-safe
std::atomic<int32_t> mQueuedFrames{0};
std::atomic<bool> mSidebandStreamChanged{false};
void fakeVsync();
} // namespace android