1 /* 2 * Copyright 2022 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 #ifndef ANDROID_HWC_CLIENTCOMPOSER_H 18 #define ANDROID_HWC_CLIENTCOMPOSER_H 19 20 #include <unordered_map> 21 22 #include "Common.h" 23 #include "Composer.h" 24 #include "Display.h" 25 #include "DrmPresenter.h" 26 #include "Layer.h" 27 28 namespace android { 29 30 class ClientComposer : public Composer { 31 public: 32 ClientComposer(DrmPresenter* drmPresenter); 33 34 ClientComposer(const ClientComposer&) = delete; 35 ClientComposer& operator=(const ClientComposer&) = delete; 36 37 ClientComposer(ClientComposer&&) = delete; 38 ClientComposer& operator=(ClientComposer&&) = delete; 39 40 HWC2::Error init() override; 41 42 HWC2::Error onDisplayCreate(Display*) override; 43 44 HWC2::Error onDisplayDestroy(Display*) override; 45 46 HWC2::Error onDisplayClientTargetSet(Display*) override; 47 48 HWC2::Error onActiveConfigChange(Display*) override; 49 50 // Determines if this composer can compose the given layers on the given 51 // display and requests changes for layers that can't not be composed. 52 HWC2::Error validateDisplay( 53 Display* display, std::unordered_map<hwc2_layer_t, HWC2::Composition>* 54 outLayerCompositionChanges) override; 55 56 // Performs the actual composition of layers and presents the composed result 57 // to the display. 58 std::tuple<HWC2::Error, base::unique_fd> presentDisplay( 59 Display* display) override; 60 61 private: 62 struct DisplayInfo { 63 std::unique_ptr<DrmBuffer> clientTargetDrmBuffer; 64 }; 65 66 std::unordered_map<int64_t, DisplayInfo> mDisplayInfos; 67 68 DrmPresenter* mDrmPresenter = nullptr; 69 }; 70 71 } // namespace android 72 73 #endif