kopia lustrzana https://github.com/Hamlib/Hamlib
80 wiersze
2.4 KiB
C++
80 wiersze
2.4 KiB
C++
/*
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* Hamlib GNUradio backend - SSB class
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* Copyright (c) 2003 by Stephane Fillod
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*
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef _SSB_H
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#define _SSB_H 1
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#include "demod.h"
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#include <GrSSBMod.h> /* SSB */
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class USBDemodChainCF : public DemodChainCF {
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private:
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GrSSBMod<d_oType> *s_demod;
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float low_cutoff;
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public:
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USBDemodChainCF (VrSource<d_iType> *src, VrSink<d_oType> *snk, rmode_t mode, pbwidth_t width, int input_rate, freq_t centerfreq = 0) :
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DemodChainCF(src, snk, mode, width, input_rate, centerfreq) {
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low_cutoff = 300;
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// centerfreq, relative to IF_center_freq
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// centerfreq += (freq_t)(low_cutoff + width/2);
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s_demod = new GrSSBMod<d_oType>(2*M_PI*(low_cutoff+width/2)/(double)input_rate,1.0);
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demod_in = demod_out = s_demod;
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}
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~USBDemodChainCF() { delete s_demod; }
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//void setWidth(pbwidth_t width) { }
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void setFreq(freq_t centerfreq) { s_demod->set_freq(centerfreq); }
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void setRFgain(float gain) { s_demod->set_gain(gain); }
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};
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class LSBDemodChainCF : public DemodChainCF {
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private:
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GrSSBMod<d_oType> *s_demod;
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float low_cutoff;
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public:
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LSBDemodChainCF (VrSource<d_iType> *src, VrSink<d_oType> *snk, rmode_t mode, pbwidth_t width, int input_rate, freq_t centerfreq = 0) :
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DemodChainCF(src, snk, mode, width, input_rate, centerfreq) {
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low_cutoff = 300;
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// centerfreq, relative to IF_center_freq
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//centerfreq += (freq_t)(-low_cutoff - width/2);
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s_demod = new GrSSBMod<d_oType>(-2*M_PI*(low_cutoff+width/2)/(double)input_rate,1.0);
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demod_in = demod_out = s_demod;
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}
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~LSBDemodChainCF() { delete s_demod; }
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//void setWidth(pbwidth_t width) { }
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void setFreq(freq_t centerfreq) { s_demod->set_freq(centerfreq); }
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void setRFgain(float gain) { s_demod->set_gain(gain); }
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};
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#endif /* _SSB_H */
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