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 CHRE_CORE_SETTINGS_H_ 18 #define CHRE_CORE_SETTINGS_H_ 19 20 #include <cinttypes> 21 22 #include "chre/util/system/debug_dump.h" 23 24 namespace chre { 25 26 enum class Setting : uint8_t { 27 LOCATION = 0, 28 WIFI_AVAILABLE, 29 AIRPLANE_MODE, 30 MICROPHONE, 31 BLE_AVAILABLE, 32 SETTING_MAX, 33 }; 34 35 /** 36 * Stores latest setting state and is responsible for sending setting updates 37 * to nanoapps. 38 */ 39 class SettingManager { 40 public: 41 SettingManager(); 42 43 /** 44 * Updates the state of a given setting. 45 * 46 * @param setting The setting to update. 47 * @param state The state of the setting. 48 */ 49 void postSettingChange(Setting setting, bool enabled); 50 51 /** 52 * Gets the current state of a given setting. Must be called from the context 53 * of the main CHRE thread. 54 * 55 * @param setting The setting to check the current state of. 56 * 57 * @return True if the setting is enabled. 58 */ 59 bool getSettingEnabled(Setting setting); 60 61 /** 62 * Gets the current state of a given setting, but returns the state as an 63 * int8_t. The state is guaranteed to be a member of enum 64 * chreUserSettingState. 65 * 66 * @param setting The setting to check the current state of (see 67 * CHRE_USER_SETTINGS). 68 * 69 * @return The current state of the setting (see enum chreUserSettingState) 70 */ 71 int8_t getSettingStateAsInt8(uint8_t setting); 72 73 /** 74 * Logs the settings related stats in the debug dump. Must be called from the 75 * context of the main CHRE thread. 76 * 77 * @param debugDump The object that is printed into for debug dump logs. 78 */ 79 void logStateToBuffer(DebugDumpWrapper &debugDump); 80 81 private: 82 static constexpr size_t kNumSettings = 83 static_cast<size_t>(Setting::SETTING_MAX); 84 85 //! The current state for each setting. 86 bool mSettingStateList[kNumSettings]; 87 88 void setSettingState(Setting setting, bool enabled); 89 90 const char *getSettingEnabledString(Setting setting); 91 92 static void settingChangedCallback(uint16_t type, void *data, 93 void *extraData); 94 }; 95 96 } // namespace chre 97 98 #endif // CHRE_CORE_SETTINGS_H_ 99