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/**************************************************************************
* Component Name: SensorsService
* Author: Marco Residori <marco.residori@xse.de>
*
* Copyright (C) 2013, XS Embedded GmbH
*
* License:
* This Source Code Form is subject to the terms of the
* Mozilla Public License, v. 2.0. If a copy of the MPL was not distributed with
* this file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
**************************************************************************/
#include "globals.h"
#include "vehicle-speed.h"
#include "sns-meta-data.h"
static pthread_mutex_t mutexCb = PTHREAD_MUTEX_INITIALIZER; //protects the callbacks
static pthread_mutex_t mutexData = PTHREAD_MUTEX_INITIALIZER; //protects the data
static volatile VehicleSpeedCallback cbVehicleSpeed = 0;
static TVehicleSpeedData gVehicleSpeedData;
bool iVehicleSpeedInit()
{
pthread_mutex_lock(&mutexCb);
cbVehicleSpeed = 0;
pthread_mutex_unlock(&mutexCb);
return true;
}
bool iVehicleSpeedDestroy()
{
pthread_mutex_lock(&mutexCb);
cbVehicleSpeed = 0;
pthread_mutex_unlock(&mutexCb);
return true;
}
bool snsVehicleSpeedGetVehicleSpeedData(TVehicleSpeedData* vehicleSpeed)
{
if(!vehicleSpeed)
{
return false;
}
pthread_mutex_lock(&mutexData);
*vehicleSpeed = gVehicleSpeedData;
pthread_mutex_unlock(&mutexData);
return true;
}
bool snsVehicleSpeedRegisterCallback(VehicleSpeedCallback callback)
{
bool retval = false;
//only if valid callback and not already registered
if(callback && !cbVehicleSpeed)
{
pthread_mutex_lock(&mutexCb);
cbVehicleSpeed = callback;
pthread_mutex_unlock(&mutexCb);
retval = true;
}
return retval;
}
bool snsVehicleSpeedDeregisterCallback(VehicleSpeedCallback callback)
{
bool retval = false;
if((cbVehicleSpeed == callback) && callback)
{
pthread_mutex_lock(&mutexCb);
cbVehicleSpeed = 0;
pthread_mutex_unlock(&mutexCb);
retval = true;
}
return retval;
}
bool snsVehicleSpeedGetMetaData(TSensorMetaData *data)
{
bool retval = false;
if(data)
{
pthread_mutex_lock(&mutexData);
*data = gSensorsMetaData[2];
pthread_mutex_unlock(&mutexData);
retval = true;
}
return retval;
}
void updateVehicleSpeedData(const TVehicleSpeedData vehicleSpeedData[], uint16_t numElements)
{
if (vehicleSpeedData != NULL && numElements > 0)
{
pthread_mutex_lock(&mutexData);
gVehicleSpeedData = vehicleSpeedData[numElements-1];
pthread_mutex_unlock(&mutexData);
pthread_mutex_lock(&mutexCb);
if (cbVehicleSpeed)
{
cbVehicleSpeed(vehicleSpeedData, numElements);
}
pthread_mutex_unlock(&mutexCb);
}
}
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