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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 <digital_diff_phasor_cc.h>
#include <gr_io_signature.h>
digital_diff_phasor_cc_sptr
digital_make_diff_phasor_cc ()
{
return gnuradio::get_initial_sptr(new digital_diff_phasor_cc());
}
digital_diff_phasor_cc::digital_diff_phasor_cc ()
: gr_sync_block ("diff_phasor_cc",
gr_make_io_signature (1, 1, sizeof (gr_complex)),
gr_make_io_signature (1, 1, sizeof (gr_complex)))
{
set_history(2);
}
digital_diff_phasor_cc::~digital_diff_phasor_cc(){}
int
digital_diff_phasor_cc::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr_complex const *in = (const gr_complex *) input_items[0];
gr_complex *out = (gr_complex *) output_items[0];
in += 1; // ensure that i - 1 is valid.
for(int i = 0; i < noutput_items; i++) {
out[i] = in[i] * conj(in[i-1]);
}
return noutput_items;
}
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