1 /* 2 * Copyright (C) 2020 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_BACKEND_H 18 #define ANDROID_BACKEND_H 19 20 #include "hwc2_device/DrmHwcTwo.h" 21 22 namespace android { 23 24 class Backend { 25 public: 26 virtual ~Backend() = default; 27 virtual HWC2::Error ValidateDisplay(HwcDisplay *display, uint32_t *num_types, 28 uint32_t *num_requests); 29 virtual std::tuple<int, size_t> GetClientLayers( 30 HwcDisplay *display, const std::vector<HwcLayer *> &layers); 31 virtual bool IsClientLayer(HwcDisplay *display, HwcLayer *layer); 32 33 protected: 34 static bool HardwareSupportsLayerType(HWC2::Composition comp_type); 35 static uint32_t CalcPixOps(const std::vector<HwcLayer *> &layers, 36 size_t first_z, size_t size); 37 static void MarkValidated(std::vector<HwcLayer *> &layers, 38 size_t client_first_z, size_t client_size); 39 static std::tuple<int, int> GetExtraClientRange( 40 HwcDisplay *display, const std::vector<HwcLayer *> &layers, 41 int client_start, size_t client_size); 42 }; 43 } // namespace android 44 45 #endif 46