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/* -*- c++ -*- */
/*
* Copyright 2004,2010,2012 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 "rail_ff_impl.h"
#include <gr_io_signature.h>
#include <gr_math.h>
namespace gr {
namespace analog {
rail_ff::sptr
rail_ff::make(float lo, float hi)
{
return gnuradio::get_initial_sptr
(new rail_ff_impl(lo, hi));
}
rail_ff_impl::rail_ff_impl(float lo, float hi)
: gr_sync_block("rail_ff",
gr_make_io_signature(1, 1, sizeof(float)),
gr_make_io_signature(1, 1, sizeof(float))),
d_lo(lo), d_hi(hi)
{
set_clipping();
}
rail_ff_impl::~rail_ff_impl()
{
}
void
rail_ff_impl::set_lo(float lo)
{
d_lo = lo;
set_clipping();
}
void
rail_ff_impl::set_hi(float hi)
{
d_hi = hi;
set_clipping();
}
void
rail_ff_impl::set_clipping()
{
d_mid = (d_lo + d_hi)/2;
d_clip = d_hi - d_mid;
}
int
rail_ff_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const float *in = (const float*)input_items[0];
float *out = (float*)output_items[0];
for(int i = 0; i < noutput_items; i++) {
out[i] = d_mid + gr_branchless_clip(in[i] - d_mid, d_clip);
}
return noutput_items;
}
} /* namespace analog */
} /* namespace gr */
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