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219 lines
9.0 KiB
219 lines
9.0 KiB
/*
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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 "Layer.h"
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#include <renderengine/Image.h>
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#include <renderengine/RenderEngine.h>
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#include <system/window.h>
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#include <utils/String8.h>
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#include <stack>
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namespace android {
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class SlotGenerationTest;
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class BufferStateLayer : public BufferLayer {
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public:
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explicit BufferStateLayer(const LayerCreationArgs&);
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~BufferStateLayer() override;
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// Implements Layer.
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const char* getType() const override { return "BufferStateLayer"; }
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void onLayerDisplayed(const sp<Fence>& releaseFence) override;
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void releasePendingBuffer(nsecs_t dequeueReadyTime) override;
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void finalizeFrameEventHistory(const std::shared_ptr<FenceTime>& glDoneFence,
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const CompositorTiming& compositorTiming) override;
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bool isBufferDue(nsecs_t /*expectedPresentTime*/) const override { return true; }
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Region getActiveTransparentRegion(const Layer::State& s) const override {
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return s.transparentRegionHint;
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}
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Rect getCrop(const Layer::State& s) const;
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bool setTransform(uint32_t transform) override;
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bool setTransformToDisplayInverse(bool transformToDisplayInverse) override;
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bool setCrop(const Rect& crop) override;
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bool setBuffer(const std::shared_ptr<renderengine::ExternalTexture>& buffer,
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const sp<Fence>& acquireFence, nsecs_t postTime, nsecs_t desiredPresentTime,
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bool isAutoTimestamp, const client_cache_t& clientCacheId, uint64_t frameNumber,
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std::optional<nsecs_t> dequeueTime, const FrameTimelineInfo& info,
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const sp<ITransactionCompletedListener>& transactionListener) override;
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bool setAcquireFence(const sp<Fence>& fence) override;
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bool setDataspace(ui::Dataspace dataspace) override;
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bool setHdrMetadata(const HdrMetadata& hdrMetadata) override;
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bool setSurfaceDamageRegion(const Region& surfaceDamage) override;
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bool setApi(int32_t api) override;
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bool setSidebandStream(const sp<NativeHandle>& sidebandStream) override;
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bool setTransactionCompletedListeners(const std::vector<sp<CallbackHandle>>& handles) override;
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bool addFrameEvent(const sp<Fence>& acquireFence, nsecs_t postedTime,
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nsecs_t requestedPresentTime) override;
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bool setPosition(float /*x*/, float /*y*/) override;
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bool setMatrix(const layer_state_t::matrix22_t& /*matrix*/,
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bool /*allowNonRectPreservingTransforms*/);
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// Override to ignore legacy layer state properties that are not used by BufferStateLayer
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bool setSize(uint32_t /*w*/, uint32_t /*h*/) override { return false; }
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bool setTransparentRegionHint(const Region& transparent) override;
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Rect getBufferSize(const State& s) const override;
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FloatRect computeSourceBounds(const FloatRect& parentBounds) const override;
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void setAutoRefresh(bool autoRefresh) override;
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bool setBufferCrop(const Rect& bufferCrop) override;
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bool setDestinationFrame(const Rect& destinationFrame) override;
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bool updateGeometry() 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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bool fenceHasSignaled() const override;
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bool framePresentTimeIsCurrent(nsecs_t expectedPresentTime) const override;
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bool onPreComposition(nsecs_t refreshStartTime) override;
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uint32_t getEffectiveScalingMode() const override;
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// See mPendingBufferTransactions
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void decrementPendingBufferCount();
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std::atomic<int32_t>* getPendingBufferCounter() override { return &mPendingBufferTransactions; }
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std::string getPendingBufferCounterName() override { return mBlastTransactionName; }
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bool shouldPresentNow(nsecs_t /*expectedPresentTime*/) const override { return true; }
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protected:
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void gatherBufferInfo() override;
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uint64_t getHeadFrameNumber(nsecs_t expectedPresentTime) const;
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void onSurfaceFrameCreated(const std::shared_ptr<frametimeline::SurfaceFrame>& surfaceFrame);
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ui::Transform getInputTransform() const override;
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Rect getInputBounds() const override;
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private:
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friend class SlotGenerationTest;
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friend class TransactionFrameTracerTest;
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friend class TransactionSurfaceFrameTest;
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inline void tracePendingBufferCount(int32_t pendingBuffers);
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bool updateFrameEventHistory(const sp<Fence>& acquireFence, nsecs_t postedTime,
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nsecs_t requestedPresentTime);
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status_t addReleaseFence(const sp<CallbackHandle>& ch, const sp<Fence>& releaseFence);
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uint64_t getFrameNumber(nsecs_t expectedPresentTime) const override;
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bool latchSidebandStream(bool& recomputeVisibleRegions) override;
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bool hasFrameUpdate() const override;
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status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime,
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nsecs_t expectedPresentTime) override;
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status_t updateActiveBuffer() override;
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status_t updateFrameNumber(nsecs_t latchTime) override;
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sp<Layer> createClone() override;
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// Crop that applies to the buffer
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Rect computeBufferCrop(const State& s);
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bool willPresentCurrentTransaction() const;
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bool bufferNeedsFiltering() const override;
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sp<Fence> mPreviousReleaseFence;
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ReleaseCallbackId mPreviousReleaseCallbackId = ReleaseCallbackId::INVALID_ID;
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uint64_t mPreviousReleasedFrameNumber = 0;
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bool mReleasePreviousBuffer = false;
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// Stores the last set acquire fence signal time used to populate the callback handle's acquire
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// time.
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nsecs_t mCallbackHandleAcquireTime = -1;
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std::deque<std::shared_ptr<android::frametimeline::SurfaceFrame>> mPendingJankClassifications;
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// An upper bound on the number of SurfaceFrames in the pending classifications deque.
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static constexpr int kPendingClassificationMaxSurfaceFrames = 25;
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const std::string mBlastTransactionName{"BufferTX - " + mName};
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// This integer is incremented everytime a buffer arrives at the server for this layer,
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// and decremented when a buffer is dropped or latched. When changed the integer is exported
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// to systrace with ATRACE_INT and mBlastTransactionName. This way when debugging perf it is
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// possible to see when a buffer arrived at the server, and in which frame it latched.
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//
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// You can understand the trace this way:
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// - If the integer increases, a buffer arrived at the server.
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// - If the integer decreases in latchBuffer, that buffer was latched
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// - If the integer decreases in setBuffer or doTransaction, a buffer was dropped
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std::atomic<int32_t> mPendingBufferTransactions{0};
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// Contains requested position and matrix updates. This will be applied if the client does
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// not specify a destination frame.
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ui::Transform mRequestedTransform;
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// TODO(marissaw): support sticky transform for LEGACY camera mode
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class HwcSlotGenerator : public ClientCache::ErasedRecipient {
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public:
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HwcSlotGenerator() {
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for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) {
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mFreeHwcCacheSlots.push(i);
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}
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}
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void bufferErased(const client_cache_t& clientCacheId);
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uint32_t getHwcCacheSlot(const client_cache_t& clientCacheId);
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private:
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friend class SlotGenerationTest;
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uint32_t addCachedBuffer(const client_cache_t& clientCacheId) REQUIRES(mMutex);
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uint32_t getFreeHwcCacheSlot() REQUIRES(mMutex);
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void evictLeastRecentlyUsed() REQUIRES(mMutex);
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void eraseBufferLocked(const client_cache_t& clientCacheId) REQUIRES(mMutex);
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struct CachedBufferHash {
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std::size_t operator()(const client_cache_t& clientCacheId) const {
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return std::hash<uint64_t>{}(clientCacheId.id);
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}
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};
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std::mutex mMutex;
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std::unordered_map<client_cache_t,
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std::pair<uint32_t /*HwcCacheSlot*/, uint32_t /*counter*/>,
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CachedBufferHash>
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mCachedBuffers GUARDED_BY(mMutex);
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std::stack<uint32_t /*HwcCacheSlot*/> mFreeHwcCacheSlots GUARDED_BY(mMutex);
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// The cache increments this counter value when a slot is updated or used.
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// Used to track the least recently-used buffer
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uint64_t mCounter = 0;
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};
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sp<HwcSlotGenerator> mHwcSlotGenerator;
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};
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} // namespace android
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