a48bcf62b6
Exposed the new "min delay" sensor property through native and java sensor apis. This allows the caller to know what is the maximum rate at which a sensor can return events, or, if a sensor works in "update" mode (events returned only when the value changes). Also augmented SensorManager.regusterSensorEvent() so that it can accept a value in microsecond in addition to the 4 constants already defined. Change-Id: If425e9979892666df8c989d7de3c362230fa19e0
92 lines
2.6 KiB
C++
92 lines
2.6 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_GUI_SENSOR_H
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#define ANDROID_GUI_SENSOR_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/Errors.h>
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#include <utils/String8.h>
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#include <utils/Flattenable.h>
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#include <hardware/sensors.h>
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#include <android/sensor.h>
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// ----------------------------------------------------------------------------
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// Concrete types for the NDK
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struct ASensor { };
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// ----------------------------------------------------------------------------
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namespace android {
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// ----------------------------------------------------------------------------
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class Parcel;
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// ----------------------------------------------------------------------------
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class Sensor : public ASensor, public Flattenable
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{
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public:
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enum {
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TYPE_ACCELEROMETER = ASENSOR_TYPE_ACCELEROMETER,
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TYPE_MAGNETIC_FIELD = ASENSOR_TYPE_MAGNETIC_FIELD,
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TYPE_GYROSCOPE = ASENSOR_TYPE_GYROSCOPE,
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TYPE_LIGHT = ASENSOR_TYPE_LIGHT,
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TYPE_PROXIMITY = ASENSOR_TYPE_PROXIMITY
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};
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Sensor();
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Sensor(struct sensor_t const* hwSensor);
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virtual ~Sensor();
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const String8& getName() const;
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const String8& getVendor() const;
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int32_t getHandle() const;
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int32_t getType() const;
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float getMinValue() const;
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float getMaxValue() const;
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float getResolution() const;
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float getPowerUsage() const;
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int32_t getMinDelay() const;
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// Flattenable interface
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virtual size_t getFlattenedSize() const;
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virtual size_t getFdCount() const;
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virtual status_t flatten(void* buffer, size_t size,
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int fds[], size_t count) const;
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virtual status_t unflatten(void const* buffer, size_t size,
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int fds[], size_t count);
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private:
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String8 mName;
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String8 mVendor;
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int32_t mHandle;
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int32_t mType;
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float mMinValue;
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float mMaxValue;
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float mResolution;
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float mPower;
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int32_t mMinDelay;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_GUI_SENSOR_H
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