kopia lustrzana https://github.com/f4exb/sdrangel
120 wiersze
4.1 KiB
C++
120 wiersze
4.1 KiB
C++
/* amd.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2012, 2013 Warren Pratt, NR0V
|
|
Copyright (C) 2024 Edouard Griffiths, F4EXB Adapted to SDRangel
|
|
|
|
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; either version 2
|
|
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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
The author can be reached by email at
|
|
|
|
warren@wpratt.com
|
|
|
|
*/
|
|
|
|
#ifndef wdsp_amd_hpp
|
|
#define wdsp_amd_hpp
|
|
|
|
// ff defines for sbdemod
|
|
#ifndef STAGES
|
|
#define STAGES 7
|
|
#endif
|
|
|
|
#ifndef OUT_IDX
|
|
#define OUT_IDX (3 * STAGES)
|
|
#endif
|
|
|
|
#include <array>
|
|
|
|
#include "export.h"
|
|
|
|
namespace WDSP {
|
|
|
|
class RXA;
|
|
|
|
class WDSP_API AMD {
|
|
public:
|
|
int run;
|
|
int buff_size; // buffer size
|
|
float *in_buff; // pointer to input buffer
|
|
float *out_buff; // pointer to output buffer
|
|
int mode; // demodulation mode
|
|
double sample_rate; // sample rate
|
|
double dc; // dc component in demodulated output
|
|
double fmin; // pll - minimum carrier freq to lock
|
|
double fmax; // pll - maximum carrier freq to lock
|
|
double omega_min; // pll - minimum lock check parameter
|
|
double omega_max; // pll - maximum lock check parameter
|
|
double zeta; // pll - damping factor; as coded, must be <=1.0
|
|
double omegaN; // pll - natural frequency
|
|
double phs; // pll - phase accumulator
|
|
double omega; // pll - locked pll frequency
|
|
double fil_out; // pll - filter output
|
|
double g1, g2; // pll - filter gain parameters
|
|
double tauR; // carrier removal time constant
|
|
double tauI; // carrier insertion time constant
|
|
double mtauR; // carrier removal multiplier
|
|
double onem_mtauR; // 1.0 - carrier_removal_multiplier
|
|
double mtauI; // carrier insertion multiplier
|
|
double onem_mtauI; // 1.0 - carrier_insertion_multiplier
|
|
std::array<double, 3*STAGES + 3> a; // Filter a variables
|
|
std::array<double, 3*STAGES + 3> b; // Filter b variables
|
|
std::array<double, 3*STAGES + 3> c; // Filter c variables
|
|
std::array<double, 3*STAGES + 3> d; // Filter d variables
|
|
std::array<double, STAGES> c0; // Filter coefficients - path 0
|
|
std::array<double, STAGES> c1; // Filter coefficients - path 1
|
|
double dsI; // delayed sample, I path
|
|
double dsQ; // delayed sample, Q path
|
|
double dc_insert; // dc component to insert in output
|
|
int sbmode; // sideband mode
|
|
int levelfade; // Fade Leveler switch
|
|
|
|
AMD
|
|
(
|
|
int run,
|
|
int buff_size,
|
|
float *in_buff,
|
|
float *out_buff,
|
|
int mode,
|
|
int levelfade,
|
|
int sbmode,
|
|
int sample_rate,
|
|
double fmin,
|
|
double fmax,
|
|
double zeta,
|
|
double omegaN,
|
|
double tauR,
|
|
double tauI
|
|
);
|
|
AMD(const AMD&) = delete;
|
|
AMD& operator=(const AMD& other) = delete;
|
|
~AMD() = default;
|
|
|
|
void init();
|
|
void flush();
|
|
void execute();
|
|
void setBuffers(float* in, float* out);
|
|
void setSamplerate(int rate);
|
|
void setSize(int size);
|
|
// Public Properties
|
|
void setSBMode(int sbmode);
|
|
void setFadeLevel(int levelfade);
|
|
};
|
|
|
|
} // namespace WDSP
|
|
|
|
#endif
|