f001c92436
Rework sensorservice to allow "virtual sensors", that is sensors that report a synthetized value based on real sensors. the main change to sensorservice is around managing which real sensor need to be activated and which rate to use. The logic for all this has been moved into SensorDevice, which essentially wraps the sensor HAL but adds two features to it: - it keeps track of which sensors need to be activated - it keeps track of what rate needs to be used For this purpose an "identity" is associated with each real sensor activation, so we can track them. On start-up we check for gravity, linear-acceleration and rotation-vector sensors, if they're not present in the HAL, we synthetize them in sensor-service. Change-Id: I841db2c1b37ef127ed571efa21732ecc5adf1800
61 lines
1.9 KiB
C++
61 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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bool mEnabled;
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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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BiquadFilter mAX, mAY, mAZ;
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SecondOrderLowPassFilter mMLowPass;
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BiquadFilter 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 bool isEnabled() const;
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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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