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/*
* Copyright (C) 2013-2015 STMicroelectronics
* Author: Denis Ciocca - <denis.ciocca@st.com>
*
* 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 ST_CIRCULAR_BUFFER_H
#define ST_CIRCULAR_BUFFER_H
#include <sys/cdefs.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <time.h>
#include <pthread.h>
#include <errno.h>
typedef struct SensorBaseData {
float raw[4];
float offset[4];
float processed[4];
int64_t timestamp;
} SensorBaseData;
/*
* class CircularBuffer
*/
class CircularBuffer {
private:
pthread_mutex_t data_mutex;
unsigned int lenght, elements_available;
SensorBaseData *data_sensor;
SensorBaseData *first_available_element;
SensorBaseData *first_free_element;
public:
CircularBuffer(unsigned int num_elements);
~CircularBuffer();
void writeElement(SensorBaseData *data);
int readElement(SensorBaseData *data);
};
#endif /* ST_CIRCULAR_BUFFER_H */
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