GravitySensor.h revision 87c9dbb728febe9ce035874796c58f308043879d
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 "SensorDevice.h" 26#include "SensorInterface.h" 27#include "SecondOrderLowPassFilter.h" 28 29// --------------------------------------------------------------------------- 30namespace android { 31// --------------------------------------------------------------------------- 32 33class GravitySensor : public SensorInterface { 34 SensorDevice& mSensorDevice; 35 Sensor mAccelerometer; 36 bool mEnabled; 37 double mAccTime; 38 39 SecondOrderLowPassFilter mLowPass; 40 CascadedBiquadFilter mX, mY, mZ; 41 42public: 43 GravitySensor(sensor_t const* list, size_t count); 44 virtual bool process(sensors_event_t* outEvent, 45 const sensors_event_t& event); 46 virtual bool isEnabled() const; 47 virtual status_t activate(void* ident, bool enabled); 48 virtual status_t setDelay(void* ident, int handle, int64_t ns); 49 virtual Sensor getSensor() const; 50 virtual bool isVirtual() const { return true; } 51}; 52 53// --------------------------------------------------------------------------- 54}; // namespace android 55 56#endif // ANDROID_GRAVITY_SENSOR_H 57