207 lines
6.1 KiB
C++
207 lines
6.1 KiB
C++
/*
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* This file is part of the Owl Positioning System (OwlPS).
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* OwlPS is a project of the University of Franche-Comte
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* (Université de Franche-Comté), France.
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*
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* Copyright © Université de Franche-Comté 2007-2012.
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*
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* Corresponding author: Matteo Cypriani <mcy@lm7.fr>
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*
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***********************************************************************
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*
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* This software is governed by the CeCILL license under French law and
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* abiding by the rules of distribution of free software. You can use,
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* modify and/or redistribute the software under the terms of the CeCILL
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* license as circulated by CEA, CNRS and INRIA at the following URL:
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* http://www.cecill.info
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*
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* As a counterpart to the access to the source code and rights to copy,
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* modify and redistribute granted by the license, users are provided
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* only with a limited warranty and the software's authors, the holder
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* of the economic rights, and the successive licensors have only
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* limited liability.
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*
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* In this respect, the user's attention is drawn to the risks
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* associated with loading, using, modifying and/or developing or
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* reproducing the software by the user in light of its specific status
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* of free software, that may mean that it is complicated to manipulate,
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* and that also therefore means that it is reserved for developers and
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* experienced professionals having in-depth computer knowledge. Users
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* are therefore encouraged to load and test the software's suitability
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* as regards their requirements in conditions enabling the security of
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* their systems and/or data to be ensured and, more generally, to use
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* and operate it in the same conditions as regards security.
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*
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* The fact that you are presently reading this means that you have had
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* knowledge of the CeCILL license and that you accept its terms.
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*
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***********************************************************************
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*/
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#include "inputmedium.hh"
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#include "calibrationrequest.hh"
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#include "stock.hh"
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#include "configuration.hh"
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#include "posexcept.hh"
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using namespace std ;
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/* *** Constructors *** */
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InputMedium::InputMedium():
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current_line_nb(0)
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{
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current_request = new Request() ;
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}
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InputMedium::~InputMedium()
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{
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delete current_request ;
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}
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/* *** Operations *** */
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/**
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* Reads a Request, increments current_line_nb, updates #current_request
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* and returns it.
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*
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* The input medium should be ready to be read before precessing
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* requests; otherwise, #current_request is \link Request::clear()
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* cleared\endlink and a blank Request is returned.
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*
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* @return The Request read, or an empty Request in case of error or
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* EOF (note that when casted to bool, an empty Request is \em false,
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* see Request::operator bool()).
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*/
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const Request& InputMedium::get_next_request()
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{
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clear_current_request() ;
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if (! fill_current_request())
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{
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clear_current_request() ;
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return *current_request ;
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}
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current_request->received_now() ;
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return *current_request ;
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}
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void InputMedium::clear_current_request()
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{
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if (dynamic_cast<CalibrationRequest*>(current_request) == NULL)
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current_request->clear() ;
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else
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{
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delete current_request ;
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current_request = NULL ;
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current_request = new Request() ;
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}
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}
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/**
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* The \em position argument can be changed by this function.
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*/
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void InputMedium::
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fill_calibration_request_data(const string &mac_mobile, Point3D &position,
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const Direction &direction, uint8_t type)
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{
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// We set the real coordinates (if found) for non-calibration requests
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if (type != OWL_REQUEST_CALIBRATION &&
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type != OWL_REQUEST_AUTOCALIBRATION)
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{
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if (position)
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current_request->set_real_position(position) ;
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return ;
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}
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if (position)
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{
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// Update the AP's coordinates if allowed (and if the mobile is
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// an AP, of course)
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if (Configuration::
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bool_value("positioning.update-ap-coordinates-online"))
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{
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if (type == OWL_REQUEST_AUTOCALIBRATION &&
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Configuration::bool_value("positioning.accept-new-aps"))
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{
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AccessPoint &transmitter =
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const_cast<AccessPoint&>(
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Stock::find_create_ap(mac_mobile)) ;
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transmitter.set_coordinates(position) ;
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}
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else
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{
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try
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{
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AccessPoint &transmitter =
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const_cast<AccessPoint&>(Stock::get_ap(mac_mobile)) ;
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transmitter.set_coordinates(position) ;
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}
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catch (element_not_found &e)
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{
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// The mobile is not an AP or the AP does not exist
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}
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}
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}
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}
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else if (type == OWL_REQUEST_AUTOCALIBRATION)
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{
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// If an autocalibration request does not contain the coordinates
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// of the AP, we use the current coordinates of the AP as
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// ReferencePoint.
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try
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{
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AccessPoint &transmitter =
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const_cast<AccessPoint&>(Stock::get_ap(mac_mobile)) ;
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position = transmitter.get_coordinates() ;
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}
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catch (element_not_found &e)
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{
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// The mobile is not an AP or the AP does not exist
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}
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}
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const ReferencePoint &reference_point =
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Stock::find_create_reference_point(position) ;
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current_request_to_calibration_request(
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&reference_point, direction, type) ;
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}
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void InputMedium::
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current_request_to_calibration_request(
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const ReferencePoint *const reference_point,
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const Direction &direction,
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const uint_fast8_t request_type)
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{
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CalibrationRequest *calibration_request =
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dynamic_cast<CalibrationRequest*>(current_request) ;
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if (calibration_request != NULL)
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{
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calibration_request->set_reference_point(reference_point) ;
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calibration_request->set_direction(direction) ;
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calibration_request->set_type(request_type) ;
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return ;
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}
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Request *tmp = current_request ;
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current_request = NULL ;
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current_request =
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new CalibrationRequest(*tmp,
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const_cast<ReferencePoint*>(reference_point),
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direction, request_type) ;
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delete tmp ;
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}
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