/*
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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_SENSOR_INTERFACE_H
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#define ANDROID_SENSOR_INTERFACE_H
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#include <sensor/Sensor.h>
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#include <utils/RefBase.h>
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// ---------------------------------------------------------------------------
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namespace android {
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// ---------------------------------------------------------------------------
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class SensorDevice;
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class SensorFusion;
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class SensorInterface : public VirtualLightRefBase {
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public:
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virtual ~SensorInterface() {}
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virtual bool process(sensors_event_t* outEvent, const sensors_event_t& event) = 0;
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virtual status_t activate(void* ident, bool enabled) = 0;
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virtual status_t setDelay(void* ident, int handle, int64_t ns) = 0;
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virtual status_t batch(void* ident, int handle, int /*flags*/, int64_t samplingPeriodNs,
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int64_t maxBatchReportLatencyNs) = 0;
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virtual status_t flush(void* /*ident*/, int /*handle*/) = 0;
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virtual const Sensor& getSensor() const = 0;
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virtual bool isVirtual() const = 0;
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virtual void autoDisable(void* /*ident*/, int /*handle*/) = 0;
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};
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class BaseSensor : public SensorInterface {
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public:
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explicit BaseSensor(const sensor_t& sensor);
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BaseSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]);
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// Not all sensors need to support batching.
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virtual status_t batch(void* ident, int handle, int, int64_t samplingPeriodNs,
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int64_t maxBatchReportLatencyNs) override {
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if (maxBatchReportLatencyNs == 0) {
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return setDelay(ident, handle, samplingPeriodNs);
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}
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return -EINVAL;
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}
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virtual status_t flush(void* /*ident*/, int /*handle*/) override {
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return -EINVAL;
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}
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virtual const Sensor& getSensor() const override { return mSensor; }
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virtual void autoDisable(void* /*ident*/, int /*handle*/) override { }
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protected:
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SensorDevice& mSensorDevice;
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Sensor mSensor;
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};
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// ---------------------------------------------------------------------------
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class HardwareSensor : public BaseSensor {
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public:
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explicit HardwareSensor(const sensor_t& sensor);
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HardwareSensor(const sensor_t& sensor, const uint8_t (&uuid)[16]);
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virtual ~HardwareSensor();
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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) override;
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virtual status_t batch(void* ident, int handle, int flags, int64_t samplingPeriodNs,
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int64_t maxBatchReportLatencyNs) override;
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virtual status_t setDelay(void* ident, int handle, int64_t ns) override;
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virtual status_t flush(void* ident, int handle) override;
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virtual bool isVirtual() const override { return false; }
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virtual void autoDisable(void *ident, int handle) override;
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};
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class VirtualSensor : public BaseSensor
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{
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public:
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VirtualSensor();
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virtual bool isVirtual() const override { return true; }
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protected:
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SensorFusion& mSensorFusion;
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};
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// ---------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_SENSOR_INTERFACE_H
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