rtcm.h

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#pragma once

#include <cstdint>

/* RTCM3 */
#define RTCM3_PREAMBLE                  0xD3
#define RTCM_INITIAL_BUFFER_LENGTH          300     /**< initial maximum message length of an RTCM message */


class RTCMParsing
{
public:
    RTCMParsing();
    ~RTCMParsing();

    /**
     * reset the parsing state
     */
    void reset();

    /**
     * add a byte to the message
     * @param b
     * @return true if message complete (use @message to get it)
     */
    bool addByte(uint8_t b);

    uint8_t *message() const { return _buffer; }
    uint16_t messageLength() const { return _pos; }

private:
    uint8_t         *_buffer{nullptr};
    uint16_t        _buffer_len{};
    uint16_t        _pos{};                     ///< next position in buffer
    uint16_t        _message_length{};                  ///< message length without header & CRC (both 3 bytes)
};