comm_decoder.h

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/***************************************************************************
 *   Copyright (C) 2022 by David Register                                  *
 *   Copyright (C) 2022 Alec Leamas                                        *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, see <https://www.gnu.org/licenses/>. *
 **************************************************************************/
 
#ifndef _COMM_DECODER_H
#define _COMM_DECODER_H
 
#include <memory>
#include <string>
 
#include "rapidjson/fwd.h"  // Must be early, rapidjson known bug
 
#include <wx/string.h>
 
#include "model/comm_appmsg.h"
#include "model/config_vars.h"
#include "model/nmea_ctx_factory.h"
 
#include "nmea0183.h"
#include "N2KParser.h"
 
typedef struct {
  double gLat;
  double gLon;
  double gSog;
  double gCog;
  double gHdt;
  double gHdm;
  double gVar;
  int n_satellites;
  int SID;
} NavData;
 
class CommDecoder {
public:
  CommDecoder() : m_NMEA0183(NmeaCtxFactory()) {};
  ~CommDecoder() {};
 
  // NMEA0183 decoding, by sentence.
  bool DecodeRMC(std::string s, NavData& temp_data);
  bool DecodeHDM(std::string s, NavData& temp_data);
  bool DecodeTHS(std::string s, NavData& temp_data);
  bool DecodeHDT(std::string s, NavData& temp_data);
  bool DecodeHDG(std::string s, NavData& temp_data);
  bool DecodeVTG(std::string s, NavData& temp_data);
  bool DecodeGSV(std::string s, NavData& temp_data);
  bool DecodeGGA(std::string s, NavData& temp_data);
  bool DecodeGLL(std::string s, NavData& temp_data);
 
  bool ParsePosition(const LATLONG& Position, double& lat, double& lon);
 
  NMEA0183 m_NMEA0183;  // Used to parse messages from NMEA threads
 
  // NMEA2000 decoding, by PGN
  bool DecodePGN129025(std::vector<unsigned char> v, NavData& temp_data);
  bool DecodePGN129026(std::vector<unsigned char> v, NavData& temp_data);
  bool DecodePGN129029(std::vector<unsigned char> v, NavData& temp_data);
  bool DecodePGN127250(std::vector<unsigned char> v, NavData& temp_data);
  bool DecodePGN129540(std::vector<unsigned char> v, NavData& temp_data);
 
  // SignalK
  bool DecodeSignalK(std::string s, NavData& temp_data);
  void handleUpdate(const rapidjson::Value& update, NavData& temp_data);
  void updateItem(const rapidjson::Value& item, wxString& sfixtime,
                  NavData& temp_data);
  bool updateNavigationPosition(const rapidjson::Value& value,
                                const wxString& sfixtime, NavData& temp_data);
  void updateNavigationSpeedOverGround(const rapidjson::Value& value,
                                       const wxString& sfixtime,
                                       NavData& temp_data);
  void updateNavigationCourseOverGround(const rapidjson::Value& value,
                                        const wxString& sfixtime,
                                        NavData& temp_data);
  void updateGnssSatellites(const rapidjson::Value& value,
                            const wxString& sfixtime, NavData& temp_data);
  void updateHeadingTrue(const rapidjson::Value& value,
                         const wxString& sfixtime, NavData& temp_data);
  void updateHeadingMagnetic(const rapidjson::Value& value,
                             const wxString& sfixtime, NavData& temp_data);
  void updateMagneticVariance(const rapidjson::Value& value,
                              const wxString& sfixtime, NavData& temp_data);
 
  std::string src_string;
  std::unordered_map<std::string, int> GNSS_quality_map;
};
 
#endif  // _COMM_DECODER_H