2cf098846c
The cut-off frequency of the lowpass filter was too high for the sampling rate used by DELAY_NORMAL. Now we use the same filters used for the gravity vector (cascaded biquad at 1.5 Hz) Change-Id: I319dc4f449a3abd553d61b196a9ddcf7782f912d
59 lines
1.9 KiB
C++
59 lines
1.9 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_ROTATION_VECTOR_SENSOR_H
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#define ANDROID_ROTATION_VECTOR_SENSOR_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <gui/Sensor.h>
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#include "SensorDevice.h"
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#include "SensorInterface.h"
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#include "SecondOrderLowPassFilter.h"
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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class RotationVectorSensor : public SensorInterface {
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SensorDevice& mSensorDevice;
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Sensor mAcc;
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Sensor mMag;
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float mMagData[3];
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double mAccTime;
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double mMagTime;
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SecondOrderLowPassFilter mALowPass;
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CascadedBiquadFilter mAX, mAY, mAZ;
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SecondOrderLowPassFilter mMLowPass;
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CascadedBiquadFilter mMX, mMY, mMZ;
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public:
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RotationVectorSensor(sensor_t const* list, size_t count);
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virtual bool process(sensors_event_t* outEvent,
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const sensors_event_t& event);
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virtual status_t activate(void* ident, bool enabled);
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virtual status_t setDelay(void* ident, int handle, int64_t ns);
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virtual Sensor getSensor() const;
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virtual bool isVirtual() const { return true; }
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_ROTATION_VECTOR_SENSOR_H
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