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/* -*- c++ -*- */
/*
* Copyright 2008,2010,2013 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.
*/
// @WARNING@
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "@NAME_IMPL@.h"
#include <gr_io_signature.h>
namespace gr {
namespace blocks {
@NAME@::sptr
@NAME@::make(int length, @O_TYPE@ scale, int max_iter)
{
return gnuradio::get_initial_sptr
(new @NAME_IMPL@(length, scale, max_iter));
}
@NAME_IMPL@::@NAME_IMPL@(int length, @O_TYPE@ scale, int max_iter)
: gr_sync_block("@NAME@",
gr_make_io_signature(1, 1, sizeof(@I_TYPE@)),
gr_make_io_signature(1, 1, sizeof(@O_TYPE@))),
d_length(length),
d_scale(scale),
d_max_iter(max_iter),
d_new_length(length),
d_new_scale(scale),
d_updated(false)
{
set_history(length);
}
@NAME_IMPL@::~@NAME_IMPL@()
{
}
void
@NAME_IMPL@::set_length_and_scale(int length, @O_TYPE@ scale)
{
d_new_length = length;
d_new_scale = scale;
d_updated = true;
}
void
@NAME_IMPL@::set_length(int length)
{
d_new_length = length;
d_updated = true;
}
void
@NAME_IMPL@::set_scale(@O_TYPE@ scale)
{
d_new_scale = scale;
d_updated = true;
}
int
@NAME_IMPL@::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
if(d_updated) {
d_length = d_new_length;
d_scale = d_new_scale;
set_history(d_length);
d_updated = false;
return 0; // history requirements might have changed
}
const @I_TYPE@ *in = (const @I_TYPE@ *)input_items[0];
@O_TYPE@ *out = (@O_TYPE@ *)output_items[0];
@I_TYPE@ sum = 0;
int num_iter = (noutput_items>d_max_iter) ? d_max_iter : noutput_items;
for(int i = 0; i < d_length-1; i++) {
sum += in[i];
}
for(int i = 0; i < num_iter; i++) {
sum += in[i+d_length-1];
out[i] = sum * d_scale;
sum -= in[i];
}
return num_iter;
}
} /* namespace blocks */
} /* namespace gr */
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