| /* |
| * Copyright 2021 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 <compositionengine/Output.h> |
| #include <compositionengine/impl/planner/Flattener.h> |
| #include <compositionengine/impl/planner/LayerState.h> |
| #include <compositionengine/impl/planner/Predictor.h> |
| #include <utils/String16.h> |
| #include <utils/Vector.h> |
| |
| #include <optional> |
| #include <string> |
| #include <unordered_map> |
| |
| namespace android { |
| |
| namespace renderengine { |
| class RenderEngine; |
| } // namespace renderengine |
| |
| namespace compositionengine::impl::planner { |
| |
| // This is the top level class for layer caching. It is responsible for |
| // heuristically determining the composition strategy of the current layer stack, |
| // and flattens inactive layers into an override buffer so it can be used |
| // as a more efficient representation of parts of the layer stack. |
| class Planner { |
| public: |
| Planner(renderengine::RenderEngine& renderengine); |
| |
| void setDisplaySize(ui::Size); |
| |
| // Updates the Planner with the current set of layers before a composition strategy is |
| // determined. |
| // The Planner will call to the Flattener to determine to: |
| // 1. Replace any cached sets with a newly available flattened cached set |
| // 2. Create a new cached set if possible |
| void plan( |
| compositionengine::Output::OutputLayersEnumerator<compositionengine::Output>&& layers); |
| |
| // Updates the Planner with the current set of layers after a composition strategy is |
| // determined. |
| void reportFinalPlan( |
| compositionengine::Output::OutputLayersEnumerator<compositionengine::Output>&& layers); |
| |
| // The planner will call to the Flattener to render any pending cached set. |
| // Rendering a pending cached set is optional: if the renderDeadline is not far enough in the |
| // future then the planner may opt to skip rendering the cached set. |
| void renderCachedSets(const OutputCompositionState& outputState, |
| std::optional<std::chrono::steady_clock::time_point> renderDeadline); |
| |
| void dump(const Vector<String16>& args, std::string&); |
| |
| private: |
| void dumpUsage(std::string&) const; |
| |
| std::unordered_map<LayerId, LayerState> mPreviousLayers; |
| |
| std::vector<const LayerState*> mCurrentLayers; |
| |
| Predictor mPredictor; |
| Flattener mFlattener; |
| |
| std::optional<Predictor::PredictedPlan> mPredictedPlan; |
| NonBufferHash mFlattenedHash = 0; |
| |
| bool mPredictorEnabled = false; |
| }; |
| |
| } // namespace compositionengine::impl::planner |
| } // namespace android |