kopia lustrzana https://github.com/f4exb/sdrangel
91 wiersze
2.4 KiB
C++
91 wiersze
2.4 KiB
C++
/* emph.h
|
|
|
|
This file is part of a program that implements a Software-Defined Radio.
|
|
|
|
Copyright (C) 2014, 2016, 2023 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
|
|
|
|
*/
|
|
|
|
/********************************************************************************************************
|
|
* *
|
|
* Overlap-Save FM Pre-Emphasis *
|
|
* *
|
|
********************************************************************************************************/
|
|
|
|
#ifndef _emph_h
|
|
#define _emph_h
|
|
|
|
#include <vector>
|
|
|
|
#include "fftw3.h"
|
|
#include "export.h"
|
|
|
|
namespace WDSP {
|
|
|
|
class WDSP_API EMPH
|
|
{
|
|
public:
|
|
int run;
|
|
int position;
|
|
int size;
|
|
float* in;
|
|
float* out;
|
|
int ctype;
|
|
double f_low;
|
|
double f_high;
|
|
std::vector<float> infilt;
|
|
std::vector<float> product;
|
|
std::vector<float> mults;
|
|
double rate;
|
|
fftwf_plan CFor;
|
|
fftwf_plan CRev;
|
|
|
|
EMPH(
|
|
int run,
|
|
int position,
|
|
int size,
|
|
float* in,
|
|
float* out,
|
|
int rate,
|
|
int ctype,
|
|
double f_low,
|
|
double f_high
|
|
);
|
|
EMPH(const EMPH&) = delete;
|
|
EMPH& operator=(const EMPH& other) = delete;
|
|
~EMPH();
|
|
|
|
void flush();
|
|
void execute(int position);
|
|
void setBuffers(float* in, float* out);
|
|
void setSamplerate(int rate);
|
|
void setSize(int size);
|
|
|
|
private:
|
|
void calc();
|
|
void decalc();
|
|
};
|
|
|
|
} // namespace WDSP
|
|
|
|
#endif
|