1 /* 2 * Copyright (C) 2018 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 #include "src/android_internal/health_hal.h" 18 19 #include <android/hardware/health/2.0/IHealth.h> 20 #include <healthhalutils/HealthHalUtils.h> 21 22 namespace perfetto { 23 namespace android_internal { 24 25 using ::android::hardware::health::V2_0::IHealth; 26 using ::android::hardware::health::V2_0::Result; 27 28 namespace { 29 30 android::sp<IHealth> g_svc; 31 32 void ResetService() { 33 g_svc = ::android::hardware::health::V2_0::get_health_service(); 34 } 35 36 } // namespace 37 38 bool GetBatteryCounter(BatteryCounter counter, int64_t* value) { 39 *value = 0; 40 if (!g_svc) 41 ResetService(); 42 43 if (!g_svc) 44 return false; 45 46 // The Android VNDK documentation states that for blocking services, the 47 // caller blocks until the reply is received and the callback is called inline 48 // in the same thread. 49 // See https://source.android.com/devices/architecture/hidl/threading . 50 51 Result res; 52 switch (counter) { 53 case BatteryCounter::kUnspecified: 54 res = Result::NOT_FOUND; 55 break; 56 57 case BatteryCounter::kCharge: 58 g_svc->getChargeCounter([&res, value](Result hal_res, int32_t hal_value) { 59 res = hal_res; 60 *value = hal_value; 61 }); 62 break; 63 64 case BatteryCounter::kCapacityPercent: 65 g_svc->getCapacity([&res, value](Result hal_res, int64_t hal_value) { 66 res = hal_res; 67 *value = hal_value; 68 }); 69 break; 70 71 case BatteryCounter::kCurrent: 72 g_svc->getCurrentNow([&res, value](Result hal_res, int32_t hal_value) { 73 res = hal_res; 74 *value = hal_value; 75 }); 76 break; 77 78 case BatteryCounter::kCurrentAvg: 79 g_svc->getCurrentAverage( 80 [&res, value](Result hal_res, int32_t hal_value) { 81 res = hal_res; 82 *value = hal_value; 83 }); 84 break; 85 } // switch(counter) 86 87 if (res == Result::CALLBACK_DIED) 88 g_svc.clear(); 89 90 return res == Result::SUCCESS; 91 } 92 93 } // namespace android_internal 94 } // namespace perfetto 95
