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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_SENSOR_INTERFACE_H
#define ANDROID_SENSOR_INTERFACE_H
#include <sensor/Sensor.h>
#include <utils/RefBase.h>
// ---------------------------------------------------------------------------
namespace android {
// ---------------------------------------------------------------------------
class SensorDevice;
class SensorFusion;
class SensorInterface : public VirtualLightRefBase {
public:
virtual ~SensorInterface() {}
virtual bool process(sensors_event_t* outEvent, const sensors_event_t& event) = 0;
virtual status_t activate(void* ident, bool enabled) = 0;
virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0;
virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs,
int64_t maxBatchReportLatencyNs) = 0;
virtual status_t flush(void* /*ident*/, int /*handle*/) = 0;
virtual const Sensor& getSensor() const = 0;
virtual bool isVirtual() const = 0;
virtual void autoDisable(void* /*ident*/, int /*handle*/) = 0;
};
class BaseSensor : public SensorInterface {
public:
explicit BaseSensor(const sensor_t& sensor);
BaseSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]);
// Not all sensors need to support batching.
virtual status_t batch(void* ident, int handle, int, int64_t samplingPeriodNs,
int64_t maxBatchReportLatencyNs) override {
if (maxBatchReportLatencyNs == 0) {
return setDelay(ident, handle, samplingPeriodNs);
}
return -EINVAL;
}
virtual status_t flush(void* /*ident*/, int /*handle*/) override {
return -EINVAL;
}
virtual const Sensor& getSensor() const override { return mSensor; }
virtual void autoDisable(void* /*ident*/, int /*handle*/) override { }
protected:
SensorDevice& mSensorDevice;
Sensor mSensor;
};
// ---------------------------------------------------------------------------
class HardwareSensor : public BaseSensor {
public:
explicit HardwareSensor(const sensor_t& sensor);
HardwareSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]);
virtual ~HardwareSensor();
virtual bool process(sensors_event_t* outEvent,
const sensors_event_t& event);
virtual status_t activate(void* ident, bool enabled) override;
virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
int64_t maxBatchReportLatencyNs) override;
virtual status_t setDelay(void* ident, int handle, int64_t ns) override;
virtual status_t flush(void* ident, int handle) override;
virtual bool isVirtual() const override { return false; }
virtual void autoDisable(void *ident, int handle) override;
};
class VirtualSensor : public BaseSensor
{
public:
VirtualSensor();
virtual bool isVirtual() const override { return true; }
protected:
SensorFusion& mSensorFusion;
};
// ---------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_SENSOR_INTERFACE_H
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