kopia lustrzana https://github.com/jamescoxon/dl-fldigi
85 wiersze
1.9 KiB
C++
85 wiersze
1.9 KiB
C++
// ----------------------------------------------------------------------------
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// BLANK.h -- BASIS FOR ALL MODEMS
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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 _BLANK_H
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#define _BLANK_H
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#include "trx.h"
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#include "modem.h"
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#include "fft.h"
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#include "filters.h"
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#include "complex.h"
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#define BLANKSampleRate 8000
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#define SYMLEN 512
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#define BLANK_BW 100
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#define BUFFLEN 4096
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#define SCOPE_DATA_LEN 1024
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// lp filter
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//#define DEC_1 8
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//#define FIRLEN_1 256
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//#define BW_1 10
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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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class BLANK : public modem {
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protected:
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double phaseacc;
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double phaseincr;
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C_FIR_filter *bandpass;
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C_FIR_filter *lowpass;
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C_FIR_filter *hilbert;
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Cmovavg *moving_avg;
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sfft *slidingfft;
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int symlen;
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// receive
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double *scope_data;
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double *inbuf;
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// transmit
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int txstate;
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double *outbuf;
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unsigned int buffptr;
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public:
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BLANK();
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~BLANK();
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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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};
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#endif
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