65 lines
1.7 KiB
C
65 lines
1.7 KiB
C
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/*
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* Copyright (C) 2008 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_BASE_H
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#define ANDROID_SENSOR_BASE_H
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#include <stdint.h>
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#include <errno.h>
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#include <sys/cdefs.h>
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#include <sys/types.h>
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/*****************************************************************************/
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struct sensors_event_t;
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class SensorBase {
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protected:
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const char* dev_name;
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const char* data_name;
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int dev_fd;
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int data_fd;
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static int openInput(const char* inputName);
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static int64_t getTimestamp();
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static int64_t timevalToNano(timeval const& t) {
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return t.tv_sec*1000000000LL + t.tv_usec*1000;
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}
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int open_device();
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int close_device();
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public:
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SensorBase(
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const char* dev_name,
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const char* data_name);
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virtual ~SensorBase();
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virtual int readEvents(sensors_event_t* data, int count) = 0;
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virtual bool hasPendingEvents() const;
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virtual int getFd() const;
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virtual int setDelay(int32_t handle, int64_t ns);
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virtual int enable(int32_t handle, int enabled) = 0;
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};
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/*****************************************************************************/
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#endif // ANDROID_SENSOR_BASE_H
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