GPSNMEAFamilyProtocol.h

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#pragma once
 
#include <chrono>
#include <string_view>
 
#include "GPSCommandChannel.h"
#include "GPSFamilyProtocol.h"
#include "GPSNMEAStream.h"
 
class GPSNMEAFamilyProtocol : public GPSFamilyProtocol
{
public:
    GPSReceiveUpdates onFrame(const GPSFrame& frame, GPSDecodeContext& context) final
    {
        return _nmea.onFrame(frame, context,
                             [this, &context](std::string_view line) { return _decodeLine(line, context); });
    }
 
    void flush(GPSDecodeContext& context) final
    {
        _expire(context);
        _nmea.flush(context);
    }
 
    bool receiverReady() const final { return _ready; }
 
    GPSReceiveUpdates receive(GPSCommandChannel& channel, std::chrono::milliseconds timeout) final
    {
        const GPSReceiveUpdates updates = _nmea.receive(channel, timeout);
        if (channel.failed()) {
            (void) channel.flush();
        }
        return updates;
    }
 
protected:
    static constexpr std::chrono::seconds STATUS_MAX_AGE{5};
    static constexpr std::chrono::milliseconds STATUS_POLL{1000};
 
    explicit GPSNMEAFamilyProtocol(GPSNMEAStream::Navigation navigation = GPSNMEAStream::Navigation::StandardNMEA)
        : _nmea(navigation)
    {
        _nmea.setRTCMEnabled(false);
    }
 
    virtual GPSReceiveUpdates _decodeLine(std::string_view line, GPSDecodeContext& context) = 0;
 
    virtual void _expire(GPSDecodeContext& context) { Q_UNUSED(context) }
 
    GPSNMEAStream _nmea;
    bool _ready = false;
};