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/* -*- c++ -*- */
/*
* Copyright 2006,2010-2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "goertzel_fc_impl.h"
#include <gr_io_signature.h>
namespace gr {
namespace fft {
goertzel_fc::sptr goertzel_fc::make(int rate, int len, float freq)
{
return gnuradio::get_initial_sptr(new goertzel_fc_impl(rate, len, freq));
}
goertzel_fc_impl::goertzel_fc_impl(int rate, int len, float freq)
: gr_sync_decimator("goertzel_fc",
gr_make_io_signature (1, 1, sizeof(float)),
gr_make_io_signature (1, 1, sizeof(gr_complex)),
len),
d_goertzel(rate, len, freq)
{
d_len = len;
d_rate = rate;
d_freq = freq;
}
goertzel_fc_impl::~goertzel_fc_impl()
{
}
void
goertzel_fc_impl::set_freq(float freq)
{
d_freq = freq;
d_goertzel.set_params(d_rate, d_len, d_freq);
}
void
goertzel_fc_impl::set_rate(int rate)
{
d_rate = rate;
d_goertzel.set_params(d_rate, d_len, d_freq);
}
int
goertzel_fc_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
float *in = (float *)input_items[0];
gr_complex *out = (gr_complex *)output_items[0];
for(int i = 0; i < noutput_items; i++) {
*out++ = d_goertzel.batch(in);
in += d_len;
}
return noutput_items;
}
} /* namespace fft */
} /* namespace gr */
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