GPSDecodedData.h

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#pragma once
 
#include <chrono>
#include <cstdint>
#include <map>
#include <optional>
 
#include "GPSProtocolEvent.h"
#include "GPSReceiverReports.h"
 
namespace GPSDecodedData {
GPSPositionReport position(const GPSDecodedPosition& source, const GPSIntegrityReport& diagnostic, uint64_t nowUs = 0);
 
class SatelliteCounts
{
public:
    static constexpr std::chrono::milliseconds FRESHNESS_TIMEOUT{5000};
 
    GPSSatelliteReport update(const GPSDecodedSatellites& source, uint64_t nowUs);
    GPSSatelliteReport update(const GPSDecodedSatelliteUsage& source, uint64_t nowUs);
    std::optional<GPSSatelliteReport> expire(uint64_t nowUs);
 
private:
    struct Count
    {
        uint64_t receivedAtUs = 0;
        std::optional<int> value = std::nullopt;
    };
 
    struct Constellation
    {
        Count inView;
        Count used;
    };
 
    static void _accept(Count& count, uint64_t receivedAtUs, std::optional<int> value, uint64_t nowUs);
    bool _expire(uint64_t nowUs);
    GPSSatelliteReport _report(bool countOnlyUsed) const;
 
    std::map<GPSConstellation, Constellation> _constellations;
    std::optional<int> _countOnlyUsed = std::nullopt;
};
}  // namespace GPSDecodedData