1 /* 2 * Copyright (C) 2024 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 <string> 20 #include <string_view> 21 #include <utility> 22 23 namespace android::hardware::graphics::composer { 24 25 constexpr std::string_view kBoardApiLevePropertyId = "ro.board.api_level"; 26 27 constexpr std::string_view kXrrVersionPropertyIdPrefix = "ro.vendor"; 28 constexpr std::string_view kXrrVersionPropertyIdSuffix = "xrr.version"; 29 30 // Mrr default version settings. 31 constexpr int kMrrDefaultVersion = 1; 32 constexpr int kMaxMrrVersion = 2; 33 34 // Vrr default version settings. 35 constexpr int kVrrDefaultVersion = 1; 36 constexpr int kMaxVrrVersion = 1; 37 38 enum XrrVersion { 39 kMrr = 1, 40 kVrr = 2, 41 kTotalXrrVersion = kVrr, 42 }; 43 44 typedef struct XrrVersionInfo { 45 int majorVersion = kMrr; 46 int minorVersion = kMrrDefaultVersion; 47 isVrrXrrVersionInfo48 bool isVrr() const { return (majorVersion == kVrr); } 49 needVrrParametersXrrVersionInfo50 bool needVrrParameters() const { 51 return (isVrr() || ((majorVersion == kMrr) && (minorVersion > 1))); 52 } 53 hasVrrControllerXrrVersionInfo54 bool hasVrrController() const { return needVrrParameters(); } 55 } XrrVersionInfo_t; 56 57 long getBoardApiLevel(); 58 59 std::pair<int, int> getDisplayXrrVersion(const std::string& displayTypeIdentifier); 60 61 } // namespace android::hardware::graphics::composer 62