3 * Copyright 2008 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
23 #ifndef INCLUDED_GR_SQUASH_FF_H_
24 # define INCLUDED_GR_SQUASH_FF_H_
26 #include <gr_sync_block.h>
27 #include <gsl/gsl_errno.h>
28 #include <gsl/gsl_interp.h>
29 #include <gsl/gsl_spline.h>
31 * \brief implements cheap resampling of spectrum directly from
32 * spectral points, using gsl interpolation
37 typedef boost::shared_ptr<gr_squash_ff> gr_squash_ff_sptr;
39 gr_squash_ff_sptr gr_make_squash_ff(const std::vector<float> &igrid,
40 const std::vector<float> &ogrid);
42 class gr_squash_ff : public gr_sync_block
44 friend gr_squash_ff_sptr gr_make_squash_ff(const std::vector<float> &igrid,
45 const std::vector<float> &ogrid);
53 gsl_interp_accel *d_accel;
56 gr_squash_ff(const std::vector<float> &igrid,
57 const std::vector<float> &ogrid);
62 int work(int noutput_items,
63 gr_vector_const_void_star &input_items,
64 gr_vector_void_star &output_items);