mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-23 00:18:37 -05:00
84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2015 F4EXB //
|
|
// written by Edouard Griffiths //
|
|
// //
|
|
// This program is free software; you can redistribute it and/or modify //
|
|
// it under the terms of the GNU General Public License as published by //
|
|
// the Free Software Foundation as version 3 of the License, or //
|
|
// (at your option) any later version. //
|
|
// //
|
|
// This program is distributed in the hope that it will be useful, //
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
|
|
// GNU General Public License V3 for more details. //
|
|
// //
|
|
// You should have received a copy of the GNU General Public License //
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
|
|
///////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
#ifndef PLUGINS_CHANNEL_BFM_RDSDEMOD_H_
|
|
#define PLUGINS_CHANNEL_BFM_RDSDEMOD_H_
|
|
|
|
#include <QObject>
|
|
//#include "util/udpsink.h" // UDP debug
|
|
|
|
#include "dsp/dsptypes.h"
|
|
|
|
class RDSDemod : public QObject
|
|
{
|
|
Q_OBJECT
|
|
public:
|
|
RDSDemod();
|
|
~RDSDemod();
|
|
|
|
void setSampleRate(int srate);
|
|
bool process(Real rdsSample, bool &bit);
|
|
|
|
struct{
|
|
Real acc;
|
|
Real qua;
|
|
Real fclk;
|
|
} m_report;
|
|
|
|
protected:
|
|
bool biphase(Real acc, bool &bit, Real d_cphi);
|
|
Real filter_lp_2400_iq(Real in, int iqIndex);
|
|
Real filter_lp_pll(Real input);
|
|
int sign(Real a);
|
|
|
|
private:
|
|
struct
|
|
{
|
|
double subcarr_phi;
|
|
Real subcarr_bb[2];
|
|
double clock_offset;
|
|
double clock_phi;
|
|
double prev_clock_phi;
|
|
Real lo_clock;
|
|
Real prev_lo_clock;
|
|
Real prev_bb;
|
|
double d_cphi;
|
|
Real acc;
|
|
int numsamples;
|
|
Real prev_acc;
|
|
int counter;
|
|
int reading_frame;
|
|
int tot_errs[2];
|
|
int dbit;
|
|
} m_parms;
|
|
|
|
Real m_xv[2][2+1];
|
|
Real m_yv[2][2+1];
|
|
Real m_xw[1+1];
|
|
Real m_yw[1+1];
|
|
Real m_prev;
|
|
|
|
int m_srate;
|
|
|
|
static const Real m_pllBeta;
|
|
static const Real m_fsc;
|
|
};
|
|
|
|
#endif /* PLUGINS_CHANNEL_BFM_RDSDEMOD_H_ */
|