RotationVectorSensor.h revision 50b66767f6c5635430483393e17d15969dfe2f05 
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_ROTATION_VECTOR_SENSOR_H
18#define ANDROID_ROTATION_VECTOR_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 RotationVectorSensor : public SensorInterface {
34    SensorDevice& mSensorDevice;
35    Sensor mAcc;
36    Sensor mMag;
37    float mMagData[3];
38    double mAccTime;
39    double mMagTime;
40    SecondOrderLowPassFilter mALowPass;
41    BiquadFilter mAX, mAY, mAZ;
42    SecondOrderLowPassFilter mMLowPass;
43    BiquadFilter mMX, mMY, mMZ;
44
45public:
46    RotationVectorSensor(sensor_t const* list, size_t count);
47    virtual bool process(sensors_event_t* outEvent,
48            const sensors_event_t& event);
49    virtual status_t activate(void* ident, bool enabled);
50    virtual status_t setDelay(void* ident, int handle, int64_t ns);
51    virtual Sensor getSensor() const;
52    virtual bool isVirtual() const { return true; }
53};
54
55// ---------------------------------------------------------------------------
56}; // namespace android
57
58#endif // ANDROID_ROTATION_VECTOR_SENSOR_H
59