GPSInterface_GPSD.h

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/*
 *  Roadnav
 *  GPSInterface_GPSD.h
 *
 *  Copyright (c) 2004 - 2008 Richard L. Lynch <rllynch@users.sourceforge.net>
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of version 2 of the GNU General Public License
 *  as published by the Free Software Foundation.
 *
 *  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, write to the Free Software
 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

//////////////////////////////////////////////////////////////////////////////
/// \file
///
/// gpsd interface module.
///
//////////////////////////////////////////////////////////////////////////////

#ifndef GPSINTERFACE_GPSD_H
#define GPSINTERFACE_GPSD_H

#ifdef HAVE_LIBGPS

#include <vector>
#include <wx/datetime.h>

#include "GPSInterface.h"

//////////////////////////////////////////////////////////////////////////////
///
/// \brief Implements gpsd interface
///
//////////////////////////////////////////////////////////////////////////////
class GPSInterface_GPSD : public IGPSInterface
{
    public:
        GPSInterface_GPSD();
        virtual ~GPSInterface_GPSD();
        virtual wxString Name();
        virtual EGPSStatus GetData(wxGPSEvent * pGPSEvent);
        virtual wxString GetLastError();
        virtual EGPSStatus AutoDetect(wxThread * pThread);
        
    private:
        wxString GPSDConnect(wxSocketClient * psockGPSD, wxString strHost, int iPort);
        wxString GPSDDisconnect(wxSocketBase * psockGPSD);
        wxString GPSDGetProtocolVersion(wxSocketBase * psockGPSD, int * piProtocolVersion, int * piMajorGPSDVersion, int * piMinorGPSDVersion, wxString * pstrCommands);
        wxString GPSDGetPosition(wxSocketBase * psockGPSD, int iProtocolVersion, Point * pptGPS);
        wxString GPSDGetHeading(wxSocketBase * psockGPSD, int iProtocolVersion, double * pfHeading);
        wxString GPSDGetSpeed(wxSocketBase * psockGPSD, int iProtocolVersion, double * pfSpeed);
        wxString GPSDGetLastTimestamp(wxSocketBase * psockGPSD, int iProtocolVersion, double * pfLastTimestamp);
        wxString GPSDGetLockType(wxSocketBase * psockGPSD, int iProtocolVersion, int * piLockType);
        wxString GPSDGetSatelliteInfo(wxSocketBase * psockGPSD, int iProtocolVersion, std::vector<SSatelliteInfo> * pvSatInfo, int * pnSatellitesUsed);
        wxString GPSDSetBufferingPolicy(wxSocketBase * psockGPSD, int iProtocolVersion, int iBufferingPolicy);

        /// Socket to gpsd server
        wxSocketClient * m_sockGPSD;
        
        /// gpsd server protocol version
        int m_iGPSDProtocolVersion;
        
        /// Timestamp of last GPS coordinates, as reported by gpsd
        double m_fGPSDLastTimestamp;
        
        /// Local time of last valid GPS sentence
        wxDateTime m_tLastGPSSentence;
        
        /// Minimum speed the vehicle must be moving to accept the heading reported by gpsd
        double m_fMinimumSpeedForHeading;
        
        /// Last error messages
        wxString m_strLastError;


        /// Last valid heading
        double m_fLastHeading;
        
        /// Last valid speed
        double m_fLastSpeed;
        
        /// Last valid satellite info
        SSatelliteInfo m_arLastSatellitesVisible[MAX_GPS_SATELLITES];
        int m_nLastSatellitesVisible;
        
        /// Last number of satellites used for lock
        long m_nLastSatUsedForLock;
        
        /// Last valid lock type
        int m_iLastLockType;
}; // #ifdef HAVE_LIBGPS

#endif // #ifdef HAVE_LIBGPS

#endif // #ifndef GPSINTERFACE_GPSD_H

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