1 /* 2 * Copyright (C) 2017 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 A_SENSOR_EVENT_QUEUE_H_ 18 19 #define A_SENSOR_EVENT_QUEUE_H_ 20 21 #include <android/frameworks/sensorservice/1.0/IEventQueue.h> 22 #include <android/frameworks/sensorservice/1.0/IEventQueueCallback.h> 23 #include <android/looper.h> 24 #include <android/sensor.h> 25 #include <android-base/macros.h> 26 #include <sensors/convert.h> 27 #include <utils/Mutex.h> 28 29 #include <atomic> 30 31 struct ALooper; 32 33 struct ASensorEventQueue 34 : public android::frameworks::sensorservice::V1_0::IEventQueueCallback { 35 using Event = android::hardware::sensors::V1_0::Event; 36 using IEventQueue = android::frameworks::sensorservice::V1_0::IEventQueue; 37 38 ASensorEventQueue( 39 ALooper *looper, 40 ALooper_callbackFunc callback, 41 void *data); 42 43 android::hardware::Return<void> onEvent(const Event &event) override; 44 45 void setImpl(const android::sp<IEventQueue> &queueImpl); 46 47 int registerSensor( 48 ASensorRef sensor, 49 int32_t samplingPeriodUs, 50 int64_t maxBatchReportLatencyUs); 51 52 int enableSensor(ASensorRef sensor); 53 int disableSensor(ASensorRef sensor); 54 55 int setEventRate(ASensorRef sensor, int32_t samplingPeriodUs); 56 57 int requestAdditionalInfoEvents(bool enable); 58 59 ssize_t getEvents(ASensorEvent *events, size_t count); 60 int hasEvents() const; 61 62 void dispatchCallback(); 63 64 void invalidate(); 65 66 private: 67 ALooper *mLooper; 68 ALooper_callbackFunc mCallback; 69 void *mData; 70 android::sp<IEventQueue> mQueueImpl; 71 72 android::Mutex mLock; 73 std::vector<sensors_event_t> mQueue; 74 75 std::atomic_bool mRequestAdditionalInfo; 76 android::Mutex mValidLock; 77 bool mValid; 78 79 DISALLOW_COPY_AND_ASSIGN(ASensorEventQueue); 80 }; 81 82 #endif // A_SENSOR_EVENT_QUEUE_H_ 83 84