GravitySensor.h revision 984826cc158193e61e3a00359ef4f6699c7d748a
1/* 2 * Copyright (C) 2010 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_GRAVITY_SENSOR_H 18#define ANDROID_GRAVITY_SENSOR_H 19 20#include <stdint.h> 21#include <sys/types.h> 22 23#include <gui/Sensor.h> 24 25#include "SensorInterface.h" 26#include "SecondOrderLowPassFilter.h" 27 28// --------------------------------------------------------------------------- 29namespace android { 30// --------------------------------------------------------------------------- 31 32class SensorDevice; 33class SensorFusion; 34 35class GravitySensor : public SensorInterface { 36 SensorDevice& mSensorDevice; 37 SensorFusion& mSensorFusion; 38 Sensor mAccelerometer; 39 double mAccTime; 40 41 SecondOrderLowPassFilter mLowPass; 42 CascadedBiquadFilter<float> mX, mY, mZ; 43 44public: 45 GravitySensor(sensor_t const* list, size_t count); 46 virtual bool process(sensors_event_t* outEvent, 47 const sensors_event_t& event); 48 virtual status_t activate(void* ident, bool enabled); 49 virtual status_t setDelay(void* ident, int handle, int64_t ns); 50 virtual Sensor getSensor() const; 51 virtual bool isVirtual() const { return true; } 52}; 53 54// --------------------------------------------------------------------------- 55}; // namespace android 56 57#endif // ANDROID_GRAVITY_SENSOR_H 58