1 /* 2 * Copyright 2019 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 <utils/RefBase.h> 20 21 namespace android { 22 23 class Fence; 24 25 namespace compositionengine { 26 27 struct LayerFECompositionState; 28 29 // Defines the interface used by the CompositionEngine to make requests 30 // of the front-end layer 31 class LayerFE : public virtual RefBase { 32 public: 33 // Latches the output-independent state. If includeGeometry is false, the 34 // geometry state can be skipped. 35 virtual void latchCompositionState(LayerFECompositionState&, bool includeGeometry) const = 0; 36 37 // Called after the layer is displayed to update the presentation fence 38 virtual void onLayerDisplayed(const sp<Fence>&) = 0; 39 40 // Gets some kind of identifier for the layer for debug purposes. 41 virtual const char* getDebugName() const = 0; 42 }; 43 44 } // namespace compositionengine 45 } // namespace android 46
