1 /* 2 * Copyright (C) 2021 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 ANDROID_AIDL_SENSOR_HAL_WRAPPER_H 18 #define ANDROID_AIDL_SENSOR_HAL_WRAPPER_H 19 20 #include "ISensorHalWrapper.h" 21 22 #include <aidl/android/hardware/sensors/ISensors.h> 23 #include <fmq/AidlMessageQueue.h> 24 #include <sensor/SensorEventQueue.h> 25 26 namespace android { 27 28 class AidlSensorHalWrapper : public ISensorHalWrapper { 29 public: 30 AidlSensorHalWrapper(); 31 ~AidlSensorHalWrapper()32 ~AidlSensorHalWrapper() override { 33 if (mEventQueueFlag != nullptr) { 34 ::android::hardware::EventFlag::deleteEventFlag(&mEventQueueFlag); 35 mEventQueueFlag = nullptr; 36 } 37 if (mWakeLockQueueFlag != nullptr) { 38 ::android::hardware::EventFlag::deleteEventFlag(&mWakeLockQueueFlag); 39 mWakeLockQueueFlag = nullptr; 40 } 41 } 42 43 virtual bool connect(SensorDeviceCallback *callback) override; 44 45 virtual void prepareForReconnect() override; 46 47 virtual bool supportsPolling() override; 48 49 virtual bool supportsMessageQueues() override; 50 51 virtual ssize_t poll(sensors_event_t *buffer, size_t count) override; 52 53 virtual ssize_t pollFmq(sensors_event_t *buffer, size_t count) override; 54 55 virtual std::vector<sensor_t> getSensorsList() override; 56 57 virtual status_t setOperationMode(SensorService::Mode mode) override; 58 59 virtual status_t activate(int32_t sensorHandle, bool enabled) override; 60 61 virtual status_t batch(int32_t sensorHandle, int64_t samplingPeriodNs, 62 int64_t maxReportLatencyNs) override; 63 64 virtual status_t flush(int32_t sensorHandle) override; 65 66 virtual status_t injectSensorData(const sensors_event_t *event) override; 67 68 virtual status_t registerDirectChannel(const sensors_direct_mem_t *memory, 69 int32_t *channelHandle) override; 70 71 virtual status_t unregisterDirectChannel(int32_t channelHandle) override; 72 73 virtual status_t configureDirectChannel(int32_t sensorHandle, int32_t channelHandle, 74 const struct sensors_direct_cfg_t *config) override; 75 76 virtual void writeWakeLockHandled(uint32_t count) override; 77 78 private: 79 std::shared_ptr<aidl::android::hardware::sensors::ISensors> mSensors; 80 std::shared_ptr<::aidl::android::hardware::sensors::ISensorsCallback> mCallback; 81 std::unique_ptr<::android::AidlMessageQueue<::aidl::android::hardware::sensors::Event, 82 SynchronizedReadWrite>> 83 mEventQueue; 84 std::unique_ptr<::android::AidlMessageQueue<int, SynchronizedReadWrite>> mWakeLockQueue; 85 ::android::hardware::EventFlag *mEventQueueFlag; 86 ::android::hardware::EventFlag *mWakeLockQueueFlag; 87 SensorDeviceCallback *mSensorDeviceCallback; 88 std::array<::aidl::android::hardware::sensors::Event, 89 ::android::SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT> 90 mEventBuffer; 91 92 ndk::ScopedAIBinder_DeathRecipient mDeathRecipient; 93 }; 94 95 } // namespace android 96 97 #endif // ANDROID_AIDL_SENSOR_HAL_WRAPPER_H 98