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sdrangel/wdsp/resamplef.hpp
2024-07-17 21:50:58 +02:00

71 lines
2.6 KiB
C++

/* resample.h
This file is part of a program that implements a Software-Defined Radio.
Copyright (C) 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
*/
/************************************************************************************************
* *
* VERSION FOR NON-COMPLEX FLOATS *
* *
************************************************************************************************/
#ifndef wdsp_resampleF_h
#define wdsp_resampleF_h
#include "export.h"
namespace WDSP {
class WDSP_API RESAMPLEF
{
public:
int run; // run
int size; // number of input samples per buffer
float* in; // input buffer for resampler
float* out; // output buffer for resampler
int idx_in; // index for input into ring
int ncoef; // number of coefficients
int L; // interpolation factor
int M; // decimation factor
float* h; // coefficients
int ringsize; // number of values the ring buffer holds
float* ring; // ring buffer
int cpp; // coefficients of the phase
int phnum; // phase number
static RESAMPLEF* create_resampleF (int run, int size, float* in, float* out, int in_rate, int out_rate);
static void destroy_resampleF (RESAMPLEF *a);
static void flush_resampleF (RESAMPLEF *a);
static int xresampleF (RESAMPLEF *a);
// Exported calls
static void* create_resampleFV (int in_rate, int out_rate);
static void xresampleFV (float* input, float* output, int numsamps, int* outsamps, void* ptr);
static void destroy_resampleFV (void* ptr);
};
} // namespace WDSP
#endif