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