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 21 namespace android::media::psh_utils { 22 23 // From hardware/interfaces/health/aidl/android/hardware/health/HealthInfo.aidl 24 25 struct HealthStats { 26 /** 27 * Instantaneous battery voltage in millivolts (mV). 28 * 29 * Historically, the unit of this field is microvolts (µV), but all 30 * clients and implementations uses millivolts in practice, making it 31 * the de-facto standard. 32 */ 33 double batteryVoltageMillivolts; 34 /** 35 * Battery charge value when it is considered to be "full" in µA-h 36 */ 37 double batteryFullChargeUah; 38 /** 39 * Instantaneous battery capacity in µA-h 40 */ 41 double batteryChargeCounterUah; 42 43 std::string normalizedEnergy(double time) const; 44 isValidHealthStats45 bool isValid() const { return batteryVoltageMillivolts > 0; } 46 47 // Returns {seconds, joules, watts} from battery counters 48 std::tuple<float, float, float> energyFrom(const std::string& s) const; 49 std::string toString() const; 50 51 HealthStats operator+=(const HealthStats& other); 52 HealthStats operator-=(const HealthStats& other); 53 HealthStats operator+(const HealthStats& other) const; 54 HealthStats operator-(const HealthStats& other) const; 55 bool operator==(const HealthStats& other) const = default; 56 }; 57 58 } // namespace android::media::psh_utils 59