1 /* 2 * Copyright (C) 2016 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 "chre/core/sensor.h" 18 19 #include "chre/core/event_loop_manager.h" 20 #include "chre_api/chre/version.h" 21 22 namespace chre { 23 Mutex Sensor::mSamplingStatusMutex; 24 25 Sensor::Sensor(Sensor &&other) 26 : PlatformSensor(std::move(other)), mFlushRequestPending(false) { 27 *this = std::move(other); 28 } 29 30 Sensor &Sensor::operator=(Sensor &&other) { 31 PlatformSensor::operator=(std::move(other)); 32 33 mSensorRequests = std::move(other.mSensorRequests); 34 35 mFlushRequestTimerHandle = other.mFlushRequestTimerHandle; 36 other.mFlushRequestTimerHandle = CHRE_TIMER_INVALID; 37 38 mFlushRequestPending = other.mFlushRequestPending.load(); 39 other.mFlushRequestPending = false; 40 41 mLastEvent = other.mLastEvent; 42 other.mLastEvent = nullptr; 43 44 mLastEventValid = other.mLastEventValid; 45 other.mLastEventValid = false; 46 47 return *this; 48 } 49 50 Sensor::~Sensor() { 51 if (mLastEvent != nullptr) { 52 LOGD("Releasing lastEvent: sensor %s, size %zu", getSensorName(), 53 getLastEventSize()); 54 memoryFree(mLastEvent); 55 } 56 } 57 58 void Sensor::init() { 59 size_t lastEventSize = getLastEventSize(); 60 if (lastEventSize > 0) { 61 mLastEvent = static_cast<ChreSensorData *>(memoryAlloc(lastEventSize)); 62 if (mLastEvent == nullptr) { 63 FATAL_ERROR("Failed to allocate last event memory for %s", 64 getSensorName()); 65 } 66 } 67 } 68 69 void Sensor::populateSensorInfo(struct chreSensorInfo *info, 70 uint32_t targetApiVersion) const { 71 info->sensorType = getSensorType(); 72 info->isOnChange = isOnChange(); 73 info->isOneShot = isOneShot(); 74 info->reportsBiasEvents = reportsBiasEvents(); 75 info->supportsPassiveMode = supportsPassiveMode(); 76 info->unusedFlags = 0; 77 info->sensorName = getSensorName(); 78 79 // minInterval was added in CHRE API v1.1 - do not attempt to populate for 80 // nanoapps targeting v1.0 as their struct will not be large enough 81 if (targetApiVersion >= CHRE_API_VERSION_1_1) { 82 info->minInterval = getMinInterval(); 83 } 84 } 85 86 void Sensor::clearPendingFlushRequest() { 87 cancelPendingFlushRequestTimer(); 88 mFlushRequestPending = false; 89 } 90 91 void Sensor::cancelPendingFlushRequestTimer() { 92 if (mFlushRequestTimerHandle != CHRE_TIMER_INVALID) { 93 EventLoopManagerSingleton::get()->cancelDelayedCallback( 94 mFlushRequestTimerHandle); 95 mFlushRequestTimerHandle = CHRE_TIMER_INVALID; 96 } 97 } 98 99 void Sensor::setLastEvent(ChreSensorData *event) { 100 if (event == nullptr) { 101 mLastEventValid = false; 102 } else { 103 CHRE_ASSERT(event->header.readingCount > 0); 104 105 SensorTypeHelpers::getLastSample(getSensorType(), event, mLastEvent); 106 mLastEventValid = true; 107 } 108 } 109 110 bool Sensor::getSamplingStatus(struct chreSensorSamplingStatus *status) const { 111 CHRE_ASSERT(status != nullptr); 112 LockGuard<Mutex> mLock(mSamplingStatusMutex); 113 114 memcpy(status, &mSamplingStatus, sizeof(*status)); 115 return true; 116 } 117 118 void Sensor::setSamplingStatus(const struct chreSensorSamplingStatus &status) { 119 LockGuard<Mutex> mLock(mSamplingStatusMutex); 120 mSamplingStatus = status; 121 } 122 123 } // namespace chre 124