squash_ff_impl.h

/* -*- c++ -*- */
/*
 * Copyright 2008,2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */

#ifndef INCLUDED_WAVELET_SQUASH_FF_IMPL_H
#define INCLUDED_WAVELET_SQUASH_FF_IMPL_H

#include <gnuradio/wavelet/api.h>
#include <gnuradio/wavelet/squash_ff.h>
#include <gsl/gsl_errno.h>
#include <gsl/gsl_interp.h>
#include <gsl/gsl_spline.h>

namespace gr {
namespace wavelet {

class WAVELET_API squash_ff_impl : public squash_ff
{
    size_t d_inum;
    size_t d_onum;
    double* d_igrid;
    double* d_iwork;
    double* d_ogrid;

    gsl_interp_accel* d_accel;
    gsl_spline* d_spline;

public:
    squash_ff_impl(const std::vector<float>& igrid, const std::vector<float>& ogrid);

    ~squash_ff_impl() override;

    int work(int noutput_items,
             gr_vector_const_void_star& input_items,
             gr_vector_void_star& output_items) override;
};

} /* namespace wavelet */
} /* namespace gr */

#endif /* INCLUDED_WAVELET_WAVELET_FF_IMPL_H */