1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 19 #include "BufferLayer.h" 20 #include "Layer.h" 21 22 #include <renderengine/Image.h> 23 #include <renderengine/RenderEngine.h> 24 #include <system/window.h> 25 #include <utils/String8.h> 26 27 #include <stack> 28 29 namespace android { 30 31 class SlotGenerationTest; 32 33 class BufferStateLayer : public BufferLayer { 34 public: 35 explicit BufferStateLayer(const LayerCreationArgs&); 36 37 ~BufferStateLayer() override; 38 39 // ----------------------------------------------------------------------- 40 // Interface implementation for Layer 41 // ----------------------------------------------------------------------- getType()42 const char* getType() const override { return "BufferStateLayer"; } 43 44 void onLayerDisplayed(const sp<Fence>& releaseFence) override; 45 void releasePendingBuffer(nsecs_t dequeueReadyTime) override; 46 47 void finalizeFrameEventHistory(const std::shared_ptr<FenceTime>& glDoneFence, 48 const CompositorTiming& compositorTiming) override; 49 50 bool shouldPresentNow(nsecs_t expectedPresentTime) const override; 51 doTransactionResize(uint32_t flags,Layer::State *)52 uint32_t doTransactionResize(uint32_t flags, Layer::State* /*stateToCommit*/) override { 53 return flags; 54 } 55 /*TODO:vhau return to using BufferStateLayer override once WM 56 * has removed deferred transactions! 57 void pushPendingState() override;*/ 58 bool applyPendingStates(Layer::State* stateToCommit) override; 59 getActiveWidth(const Layer::State & s)60 uint32_t getActiveWidth(const Layer::State& s) const override { return s.active.w; } getActiveHeight(const Layer::State & s)61 uint32_t getActiveHeight(const Layer::State& s) const override { return s.active.h; } getActiveTransform(const Layer::State & s)62 ui::Transform getActiveTransform(const Layer::State& s) const override { 63 return s.active.transform; 64 } getActiveTransparentRegion(const Layer::State & s)65 Region getActiveTransparentRegion(const Layer::State& s) const override { 66 return s.transparentRegionHint; 67 } 68 Rect getCrop(const Layer::State& s) const; 69 70 bool setTransform(uint32_t transform) override; 71 bool setTransformToDisplayInverse(bool transformToDisplayInverse) override; 72 bool setCrop(const Rect& crop) override; 73 bool setFrame(const Rect& frame) override; 74 bool setBuffer(const sp<GraphicBuffer>& buffer, const sp<Fence>& acquireFence, nsecs_t postTime, 75 nsecs_t desiredPresentTime, const client_cache_t& clientCacheId) override; 76 bool setAcquireFence(const sp<Fence>& fence) override; 77 bool setDataspace(ui::Dataspace dataspace) override; 78 bool setHdrMetadata(const HdrMetadata& hdrMetadata) override; 79 bool setSurfaceDamageRegion(const Region& surfaceDamage) override; 80 bool setApi(int32_t api) override; 81 bool setSidebandStream(const sp<NativeHandle>& sidebandStream) override; 82 bool setTransactionCompletedListeners(const std::vector<sp<CallbackHandle>>& handles) override; 83 void forceSendCallbacks() override; 84 bool addFrameEvent(const sp<Fence>& acquireFence, nsecs_t postedTime, 85 nsecs_t requestedPresentTime) override; 86 87 // Override to ignore legacy layer state properties that are not used by BufferStateLayer setSize(uint32_t,uint32_t)88 bool setSize(uint32_t /*w*/, uint32_t /*h*/) override { return false; } setPosition(float,float)89 bool setPosition(float /*x*/, float /*y*/) override { return false; } 90 bool setTransparentRegionHint(const Region& transparent) override; setMatrix(const layer_state_t::matrix22_t &,bool)91 bool setMatrix(const layer_state_t::matrix22_t& /*matrix*/, 92 bool /*allowNonRectPreservingTransforms*/) override { 93 return false; 94 } setCrop_legacy(const Rect &)95 bool setCrop_legacy(const Rect& /*crop*/) override { return false; } setOverrideScalingMode(int32_t)96 bool setOverrideScalingMode(int32_t /*overrideScalingMode*/) override { return false; } deferTransactionUntil_legacy(const sp<IBinder> &,uint64_t)97 void deferTransactionUntil_legacy(const sp<IBinder>& /*barrierHandle*/, 98 uint64_t /*frameNumber*/) override {} deferTransactionUntil_legacy(const sp<Layer> &,uint64_t)99 void deferTransactionUntil_legacy(const sp<Layer>& /*barrierLayer*/, 100 uint64_t /*frameNumber*/) override {} 101 102 Rect getBufferSize(const State& s) const override; 103 FloatRect computeSourceBounds(const FloatRect& parentBounds) const override; 104 Layer::RoundedCornerState getRoundedCornerState() const override; 105 106 // ----------------------------------------------------------------------- 107 108 // ----------------------------------------------------------------------- 109 // Interface implementation for BufferLayer 110 // ----------------------------------------------------------------------- 111 bool fenceHasSignaled() const override; 112 bool framePresentTimeIsCurrent(nsecs_t expectedPresentTime) const override; 113 bool onPreComposition(nsecs_t refreshStartTime) override; 114 115 protected: 116 void gatherBufferInfo() override; 117 uint64_t getHeadFrameNumber(nsecs_t expectedPresentTime) const; 118 119 private: 120 bool updateFrameEventHistory(const sp<Fence>& acquireFence, nsecs_t postedTime, 121 nsecs_t requestedPresentTime); 122 123 uint64_t getFrameNumber(nsecs_t expectedPresentTime) const override; 124 125 bool getAutoRefresh() const override; 126 bool getSidebandStreamChanged() const override; 127 128 bool latchSidebandStream(bool& recomputeVisibleRegions) override; 129 130 bool hasFrameUpdate() const override; 131 132 status_t bindTextureImage() override; 133 status_t updateTexImage(bool& recomputeVisibleRegions, nsecs_t latchTime, 134 nsecs_t expectedPresentTime) override; 135 136 status_t updateActiveBuffer() override; 137 status_t updateFrameNumber(nsecs_t latchTime) override; 138 139 sp<Layer> createClone() override; 140 141 // Crop that applies to the buffer 142 Rect computeCrop(const State& s); 143 144 private: 145 friend class SlotGenerationTest; 146 bool willPresentCurrentTransaction() const; 147 148 static const std::array<float, 16> IDENTITY_MATRIX; 149 150 std::unique_ptr<renderengine::Image> mTextureImage; 151 152 std::atomic<bool> mSidebandStreamChanged{false}; 153 154 mutable uint64_t mFrameNumber{0}; 155 uint64_t mFrameCounter{0}; 156 157 sp<Fence> mPreviousReleaseFence; 158 uint64_t mPreviousBufferId = 0; 159 uint64_t mPreviousReleasedFrameNumber = 0; 160 161 mutable bool mCurrentStateModified = false; 162 bool mReleasePreviousBuffer = false; 163 nsecs_t mCallbackHandleAcquireTime = -1; 164 165 // TODO(marissaw): support sticky transform for LEGACY camera mode 166 167 class HwcSlotGenerator : public ClientCache::ErasedRecipient { 168 public: HwcSlotGenerator()169 HwcSlotGenerator() { 170 for (uint32_t i = 0; i < BufferQueue::NUM_BUFFER_SLOTS; i++) { 171 mFreeHwcCacheSlots.push(i); 172 } 173 } 174 175 void bufferErased(const client_cache_t& clientCacheId); 176 177 uint32_t getHwcCacheSlot(const client_cache_t& clientCacheId); 178 179 private: 180 friend class SlotGenerationTest; 181 uint32_t addCachedBuffer(const client_cache_t& clientCacheId) REQUIRES(mMutex); 182 uint32_t getFreeHwcCacheSlot() REQUIRES(mMutex); 183 void evictLeastRecentlyUsed() REQUIRES(mMutex); 184 void eraseBufferLocked(const client_cache_t& clientCacheId) REQUIRES(mMutex); 185 186 struct CachedBufferHash { operatorCachedBufferHash187 std::size_t operator()(const client_cache_t& clientCacheId) const { 188 return std::hash<uint64_t>{}(clientCacheId.id); 189 } 190 }; 191 192 std::mutex mMutex; 193 194 std::unordered_map<client_cache_t, 195 std::pair<uint32_t /*HwcCacheSlot*/, uint32_t /*counter*/>, 196 CachedBufferHash> 197 mCachedBuffers GUARDED_BY(mMutex); 198 std::stack<uint32_t /*HwcCacheSlot*/> mFreeHwcCacheSlots GUARDED_BY(mMutex); 199 200 // The cache increments this counter value when a slot is updated or used. 201 // Used to track the least recently-used buffer 202 uint64_t mCounter = 0; 203 }; 204 205 sp<HwcSlotGenerator> mHwcSlotGenerator; 206 }; 207 208 } // namespace android 209