gnss_messages_common.cpp

Go to the documentation of this file.

/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          http://www.mrpt.org/                          |
   |                                                                        |
   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
   | See: http://www.mrpt.org/Authors - All rights reserved.                |
   | Released under BSD License. See details in http://www.mrpt.org/License |
   +------------------------------------------------------------------------+ */

#include "obs-precomp.h"  // Precompiled headers

#include <mrpt/obs/gnss_messages.h>  // Must include all message classes so we can implemente the class factory here
#include <mrpt/utils/CMemoryStream.h>
#include <map>

using namespace std;
using namespace mrpt::obs::gnss;

#define LIST_ALL_MSGS                     \
        /* ====== NMEA ======  */             \
        DOFOR(NMEA_GGA)                       \
        DOFOR(NMEA_RMC)                       \
        DOFOR(NMEA_ZDA)                       \
        DOFOR(NMEA_VTG)                       \
        DOFOR(NMEA_GLL)                       \
        /* ====== TopCon mmGPS ====== */      \
        DOFOR(TOPCON_PZS)                     \
        DOFOR(TOPCON_SATS)                    \
        /* ====== Novatel OEM6 ======  */     \
        DOFOR(NV_OEM6_GENERIC_FRAME)          \
        DOFOR(NV_OEM6_BESTPOS)                \
        /* ====== Novatel SPAN+OEM6 ====== */ \
        DOFOR(NV_OEM6_GENERIC_SHORT_FRAME)    \
        DOFOR(NV_OEM6_INSPVAS)                \
        DOFOR(NV_OEM6_RANGECMP)               \
        DOFOR(NV_OEM6_RXSTATUS)               \
        DOFOR(NV_OEM6_RAWEPHEM)               \
        DOFOR(NV_OEM6_VERSION)                \
        DOFOR(NV_OEM6_RAWIMUS)                \
        DOFOR(NV_OEM6_MARKPOS)                \
        DOFOR(NV_OEM6_MARKTIME)               \
        DOFOR(NV_OEM6_MARK2TIME)              \
        DOFOR(NV_OEM6_IONUTC)

// Class factory:
gnss_message* gnss_message::Factory(const gnss_message_type_t msg_id)
{
#define DOFOR(_MSG_ID) \
        case _MSG_ID:      \
                return new Message_##_MSG_ID();
        switch (msg_id)
        {
                LIST_ALL_MSGS
                default:
                        return nullptr;
        };
#undef DOFOR
}
bool gnss_message::FactoryKnowsMsgType(const gnss_message_type_t msg_id)
{
#define DOFOR(_MSG_ID) \
        case _MSG_ID:      \
                return true;
        switch (msg_id)
        {
                LIST_ALL_MSGS
                default:
                        return false;
        };
#undef DOFOR
}

const std::string& gnss_message::getMessageTypeAsString() const
{
        static bool first_call = true;
        static std::map<gnss_message_type_t, std::string> gnss_type2str;
        if (first_call)
        {
                first_call = false;
#define DOFOR(_MSG_ID) gnss_type2str[_MSG_ID] = #_MSG_ID;
                LIST_ALL_MSGS
#undef DOFOR
        }

        return gnss_type2str[this->message_type];
}

// Save to binary stream. Launches an exception upon error
void gnss_message::writeToStream(mrpt::utils::CStream& out) const
{
        const int32_t msg_id = message_type;
        out << msg_id;
        this->internal_writeToStream(out);
}

// Load from binary stream. Launches an exception upon error
void gnss_message::readFromStream(mrpt::utils::CStream& in)
{
        int32_t msg_id;
        in >> msg_id;
        ASSERT_EQUAL_((int32_t)msg_id, this->message_type);
        this->internal_readFromStream(in);
}

// Load from binary stream and creates object detecting its type (class
// factory). Launches an exception upon error
gnss_message* gnss_message::readAndBuildFromStream(mrpt::utils::CStream& in)
{
        int32_t msg_id;
        in >> msg_id;
        gnss_message* msg =
                gnss_message::Factory(static_cast<gnss_message_type_t>(msg_id));
        if (!msg)
                THROW_EXCEPTION_FMT(
                        "Error deserializing gnss_message: unknown message type '%i'",
                        static_cast<int>(msg_id));
        msg->internal_readFromStream(in);
        return msg;
}

// Ctor (default: nullptr pointer)
gnss_message_ptr::gnss_message_ptr() : ptr(nullptr) {}
// Ctor:Makes a copy of the pointee
gnss_message_ptr::gnss_message_ptr(const gnss_message_ptr& o)
{
        if (!o.ptr)
        {
                ptr = nullptr;
        }
        else
        {
                mrpt::utils::CMemoryStream buf;
                o->writeToStream(buf);
                buf.Seek(0);
                ptr = gnss_message::readAndBuildFromStream(buf);
        }
}
/** Assigns a pointer */
gnss_message_ptr::gnss_message_ptr(const gnss_message* p)
        : ptr(const_cast<gnss_message*>(p))
{
}
void gnss_message_ptr::set(gnss_message* p)
{
        if (ptr)
        {
                delete ptr;
                ptr = nullptr;
        }
        ptr = p;
}
// Makes a copy of the pointee
gnss_message_ptr& gnss_message_ptr::operator=(const gnss_message_ptr& o)
{
        mrpt::utils::CMemoryStream buf;
        o->writeToStream(buf);
        buf.Seek(0);
        ptr = gnss_message::readAndBuildFromStream(buf);
        return *this;
}
gnss_message_ptr::~gnss_message_ptr()
{
        if (ptr)
        {
                delete ptr;
                ptr = nullptr;
        }
}

// ---------------------------------------
UTC_time::UTC_time() : hour(0), minute(0), sec(0) {}
void UTC_time::writeToStream(mrpt::utils::CStream& out) const
{
        out << hour << minute << sec;
}
void UTC_time::readFromStream(mrpt::utils::CStream& in)
{
        in >> hour >> minute >> sec;
}

// Build an MRPT timestamp with the hour/minute/sec of this structure and the
// date from the given timestamp.
mrpt::system::TTimeStamp UTC_time::getAsTimestamp(
        const mrpt::system::TTimeStamp& date) const
{
        using namespace mrpt::system;

        TTimeParts parts;
        timestampToParts(date, parts, false /* UTC, not local */);

        parts.hour = this->hour;
        parts.minute = this->minute;
        parts.second = this->sec;

        return buildTimestampFromParts(parts);
}