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/*
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011 Her Majesty
the Queen in Right of Canada (Communications Research Center Canada)
Copyright (C) 2014
Matthias P. Braendli, matthias.braendli@mpb.li
http://opendigitalradio.org
*/
/*
This file is part of ODR-DabMod.
ODR-DabMod 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 3 of the
License, or (at your option) any later version.
ODR-DabMod 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 ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef RESAMPLER_H
#define RESAMPLER_H
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "porting.h"
#include "ModCodec.h"
#if USE_FFTW
# include <sys/types.h>
# include <fftw3.h>
# define FFT_TYPE fftwf_complex
# define FFT_PLAN fftwf_plan
#else
# include "kiss_fftsimd.h"
# include <sys/types.h>
# include <kiss_fft.h>
# include <tools/kiss_fftr.h>
#endif
#include <complex>
typedef std::complex<float> complexf;
class Resampler : public ModCodec
{
public:
Resampler(size_t inputRate, size_t outputRate, size_t resolution = 512);
virtual ~Resampler();
Resampler(const Resampler&);
Resampler& operator=(const Resampler&);
int process(Buffer* const dataIn, Buffer* dataOut);
const char* name() { return "Resampler"; }
protected:
FFT_PLAN myFftPlan1;
FFT_PLAN myFftPlan2;
size_t L;
size_t M;
size_t K;
size_t myFftSizeIn;
size_t myFftSizeOut;
FFT_TYPE* myFftIn;
FFT_TYPE* myFftOut;
complexf* myBufferIn;
complexf* myBufferOut;
FFT_TYPE* myFront;
FFT_TYPE* myBack;
float *myWindow;
float myFactor;
};
#endif // RESAMPLER_H
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