50b66767f6
whether a physical sensor needed to be active or not was managed by a simpe reference counter; unfortunatelly nothing prevented it to get out of sync if a sensor was disabled more than once. sensorservice already maintainted a list of all the "clients" connected to a physical sensor; we now use that list to determine if a sensor should be enabled. This can never be "out-of-sync" since this is the only data structure linking a sensor to a user of that sensor. also removed the isEnabled() method, which was never used and implemented wrongly (since it didn't take into account that a sensor could be disabled for a client but not of another). Change-Id: I789affb877728ca957e99f7ba749def37c4db1c7
55 lines
1.7 KiB
C++
55 lines
1.7 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_GRAVITY_SENSOR_H
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#define ANDROID_GRAVITY_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 GravitySensor : public SensorInterface {
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SensorDevice& mSensorDevice;
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Sensor mAccelerometer;
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double mAccTime;
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SecondOrderLowPassFilter mLowPass;
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CascadedBiquadFilter mX, mY, mZ;
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public:
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GravitySensor(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_GRAVITY_SENSOR_H
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