kopia lustrzana https://github.com/jamescoxon/dl-fldigi
176 wiersze
3.7 KiB
C++
176 wiersze
3.7 KiB
C++
// ----------------------------------------------------------------------------
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// dominoex.h -- DominoEX modem
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//
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// Copyright (C) 2001, 2002, 2003
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// Tomi Manninen (oh2bns@sral.fi)
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// Copyright (C) 2006
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// Hamish Moffatt (hamish@debian.org)
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// Copyright (C) 2006
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// David Freese (w1hkj@w1hkj.com)
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//
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// Fldigi is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Fldigi is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with fldigi. If not, see <http://www.gnu.org/licenses/>.
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// ----------------------------------------------------------------------------
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#ifndef _DOMINOEX_H
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#define _DOMINOEX_H
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#include <string>
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#include "complex.h"
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#include "modem.h"
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#include "filters.h"
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#include "fftfilt.h"
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#include "dominovar.h"
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#include "mbuffer.h"
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// NASA coefficients for viterbi encode/decode algorithms
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#define K 7
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#define POLY1 0x6d
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#define POLY2 0x4f
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//#include "mfskvaricode.h"
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#include "interleave.h"
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#include "viterbi.h"
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#define NUMTONES 18
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#define MAXFFTS 8
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#define BASEFREQ 1000.0
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#define FIRSTIF 1500.0
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#define SCOPESIZE 64
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struct domrxpipe {
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cmplx vector[MAXFFTS * NUMTONES * 6];
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};
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class dominoex : public modem {
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public:
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enum {
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TX_STATE_PREAMBLE,
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TX_STATE_START,
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TX_STATE_DATA,
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TX_STATE_END,
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TX_STATE_FLUSH
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};
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protected:
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// common variables
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double phase[MAXFFTS + 1];
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double txphase;
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int symlen;
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int doublespaced;
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double tonespacing;
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int counter;
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unsigned int twosym;
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int paths;
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int numbins;
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bool slowcpu;
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int basetone;
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int lotone;
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int hitone;
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int extones;
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// rx variables
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C_FIR_filter *hilbert;
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sfft *binsfft[MAXFFTS];
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fftfilt *fft;
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Cmovavg *vidfilter[SCOPESIZE];
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Cmovavg *syncfilter;
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domrxpipe *pipe;
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unsigned int pipeptr;
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mbuffer<double, 0, 2> scopedata;
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mbuffer<double, 0, 2> videodata;
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cmplx currvector;
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int currsymbol;
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int prev1symbol;
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int prev2symbol;
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double met1;
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double met2;
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double sig;
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double noise;
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double s2n;
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int synccounter;
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unsigned char symbolbuf[MAX_VARICODE_LEN];
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int symcounter;
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int symbolbit;
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bool filter_reset;
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bool staticburst;
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bool outofrange;
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// tx variables
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int txstate;
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int txprevtone;
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unsigned int bitshreg;
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std::string strSecXmtText;
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// FEC variables
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viterbi *MuPskDec;
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interleave *MuPskRxinlv;
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encoder *MuPskEnc;
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interleave *MuPskTxinlv;
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int Mu_bitstate;
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unsigned char Mu_symbolpair[2];
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unsigned int Mu_datashreg;
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int Mu_symcounter;
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private:
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cmplx mixer(int n, cmplx in);
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void recvchar(int c);
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void decodesymbol();
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void decodeDomino(int c);
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int harddecode();
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void update_syncscope();
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void synchronize();
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void afc();
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void reset_afc();
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void eval_s2n();
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void sendtone(int tone, int duration);
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void sendsymbol(int sym);
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void sendchar(unsigned char c, int secondary);
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void sendidle();
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void sendsecondary();
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void flushtx();
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int get_secondary_char();
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void reset_filters();
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// MultiPsk FEC scheme
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// Rx
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unsigned int MuPskPriSecChar(unsigned int c);
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void decodeMuPskSymbol(unsigned char symbol);
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void decodeMuPskEX(int c);
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// Tx
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unsigned char MuPskSec2Pri(int c);
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void sendMuPskEX(unsigned char c, int secondary);
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void MuPskClearbits();
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void MuPskFlushTx();
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void MuPsk_sec2pri_init(void);
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public:
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dominoex (trx_mode md);
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~dominoex ();
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void init();
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void rx_init();
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void tx_init(SoundBase *sc);
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void restart();
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int rx_process(const double *buf, int len);
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int tx_process();
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};
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#endif
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