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/* -*- c++ -*- */
/*
* construct P25 frames out of raw dibits
* Copyright 2010, KA1RBI
*
* usage: after constructing, call rx_sym once per received dibit.
* frame fields are available for inspection when true is returned
*/
#ifndef INCLUDED_P25_FRAMER_H
#define INCLUDED_P25_FRAMER_H
class p25_framer;
class p25_framer
{
private:
typedef std::vector<bool> bit_vector;
// internal functions
bool nid_codeword(uint64_t acc);
// internal instance variables and state
uint8_t reverse_p;
int nid_syms;
uint32_t next_bit;
uint64_t nid_accum;
uint32_t frame_size_limit;
public:
p25_framer(); // constructor
~p25_framer (); // destructor
bool rx_sym(uint8_t dibit) ;
uint32_t symbols_received;
// info from received frame
uint64_t nid_word; // received NID word
uint32_t nac; // extracted NAC
uint32_t duid; // extracted DUID
bit_vector frame_body; // all bits in frame
uint32_t frame_size; // number of bits in frame_body
uint32_t bch_errors; // number of errors detected in bch
};
#endif /* INCLUDED_P25_FRAMER_H */
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