kopia lustrzana https://github.com/jamescoxon/dl-fldigi
97 wiersze
2.2 KiB
C++
97 wiersze
2.2 KiB
C++
// ----------------------------------------------------------------------------
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// wwv.h -- wwv receive only modem
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//
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// Copyright (C) 2006
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// Dave Freese, W1HKJ
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//
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// This file is part of fldigi.
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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 _wwv_H
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#define _wwv_H
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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 "mbuffer.h"
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#define wwvSampleRate 8000
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#define MaxSymLen 512
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// lp filter #1
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//#define DEC_1 40
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#define DEC_1 8
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#define FIRLEN_1 512
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#define BW_1 20
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// lp filter #2
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#define DEC_2 5
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#define FIRLEN_2 256
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#define BW_2 100
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// wwv function return status codes.
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#define wwv_SUCCESS 0
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#define wwv_ERROR -1
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class wwv : public modem {
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protected:
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double phaseacc;
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double phaseincr;
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int smpl_ctr; // sample counter for timing wwv rx
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double agc; // threshold for tick detection
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C_FIR_filter *hilbert;
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C_FIR_filter *lpfilter;
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Cmovavg *vidfilter;
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mbuffer<double, 1000, 2> buffer; // storage for 1000 samples/sec video
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unsigned int buffptr;
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int sync;
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int sync0;
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int ticks;
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int x1;
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int y1;
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int x2;
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int y2;
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bool calc;
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bool zoom;
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double keyshape[32]; // 4 msec rise and fall time for pulse
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double audio[400];
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double quiet[400];
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double play[400];
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double nco(double freq);
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void makeshape();
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void makeaudio();
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public:
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wwv();
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~wwv();
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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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void update_syncscope();
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void set1(int x, int y);
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void set2(int x, int y);
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};
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#endif
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