112 lines
3.5 KiB
C
112 lines
3.5 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-Comté
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* (Université de Franche-Comté), France.
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*
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* This is the header file of libowlps-resultreader, the library that
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* provides functions to read results sent on UDP by OwlPS Positioning.
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*
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* See also the example program owlps-resultreader-udp.c.
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*/
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#ifndef _LIBOWLPS_RESULTREADER_CSV_
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#define _LIBOWLPS_RESULTREADER_CSV_
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#include <owlps.h>
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#include <stdio.h>
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#include <inttypes.h>
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/* Maximum size of a result CSV string sent by OwlPS Positioning.
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* Request's information:
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* MAC, request type (2 chars), timestamp, ';'
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* Plus, for each algorithm:
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* Name, three coordinates, error (we assume the same size as the
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* coordinates), area name, ';'
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* Let's define OWL_NB_ALGORITHMS as the number of implemented
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* algorithms (this is ugly).
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*/
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#define OWL_NB_ALGORITHMS 10
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#define OWL_CSV_RESULT_REQUEST_STRLEN \
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(OWL_ETHER_ADDR_STRLEN + OWL_TIMESTAMP_STRLEN + 3)
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#define OWL_CSV_ALGORITHM_RESULT_STRLEN \
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(OWL_ALGORITHM_STRLEN + 4 * OWL_COORDINATE_STRLEN + \
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OWL_AREA_STRLEN + 1)
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#define OWL_CSV_RESULT_STRLEN \
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(OWL_CSV_RESULT_REQUEST_STRLEN + \
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OWL_NB_ALGORITHMS * OWL_CSV_ALGORITHM_RESULT_STRLEN + 1)
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/* Same thing, but for the simplified CSV strings created by
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* *_to_csv_simple().
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* Request's information is only the MAC address.
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* For the algorithm:
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* = 12 characters per coordinate + OWL_AREA_STRLEN
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*/
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#define OWL_CSV_RESULT_REQUEST_SIMPLE_STRLEN OWL_ETHER_ADDR_STRLEN
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#define OWL_CSV_ALGORITHM_RESULT_SIMPLE_STRLEN \
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(3 * OWL_COORDINATE_STRLEN + OWL_AREA_STRLEN + 1)
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#define OWL_CSV_RESULT_SIMPLE_STRLEN \
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(OWL_CSV_RESULT_REQUEST_SIMPLE_STRLEN + \
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OWL_NB_ALGORITHMS * OWL_CSV_ALGORITHM_RESULT_SIMPLE_STRLEN + 1)
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/* Linked list of algorithms' results.
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* Each structure is the result of a single algorithm.
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*/
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typedef struct _owl_algorithm_result
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{
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char *algorithm ;
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float x ;
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float y ;
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float z ;
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float error ;
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char *area ;
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struct _owl_algorithm_result *next ;
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} owl_algorithm_result ;
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/* Results for a request. Includes the request's data, and the
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* list of algorithms' results.
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*/
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typedef struct _owl_result
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{
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char *mobile_mac_addr ;
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uint8_t request_type ;
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owl_timestamp mobile_timestamp ;
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unsigned int nb_results ;
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owl_algorithm_result *results ;
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} owl_result ;
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owl_result* owl_receive_position(int sockfd) ;
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owl_result* owl_fill_result(char *csv) ;
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owl_algorithm_result* owl_fill_algorithm_result(char **csv) ;
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void owl_result_to_csv(char dst[OWL_CSV_RESULT_STRLEN],
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const owl_result *const src) ;
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void
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owl_algorithm_result_to_csv(char dst[OWL_CSV_ALGORITHM_RESULT_STRLEN],
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const owl_algorithm_result *const src) ;
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void owl_result_to_csv_simple(char dst[OWL_CSV_RESULT_SIMPLE_STRLEN],
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const owl_result *const src) ;
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void owl_algorithm_result_to_csv_simple
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(char dst[OWL_CSV_ALGORITHM_RESULT_SIMPLE_STRLEN],
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const owl_algorithm_result *const src) ;
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void owl_fprint_result(FILE *stream, const owl_result *const src) ;
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void owl_fprint_algorithm_result(FILE *stream,
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const owl_algorithm_result *const src) ;
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#define owl_print_result(SRC) \
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(owl_fprint_result(stdout, (SRC)))
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#define owl_print_algorithm_result(SRC) \
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(owl_fprint_algorithm_result(stdout, (SRC)))
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void owl_free_result(owl_result *result) ;
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void owl_free_algorithm_result(owl_algorithm_result *algo) ;
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#endif // _LIBOWLPS_RESULTREADER_CSV_
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