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/* -*- c++ -*- */
/*
* Copyright 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 "repeat_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
repeat::sptr repeat::make(size_t itemsize, int interp)
{
return gnuradio::get_initial_sptr(new repeat_impl(itemsize, interp));
}
repeat_impl::repeat_impl(size_t itemsize, int interp)
: sync_interpolator("repeat",
io_signature::make (1, 1, itemsize),
io_signature::make (1, 1, itemsize),
interp),
d_itemsize(itemsize),
d_interp(interp)
{
message_port_register_in(pmt::mp("interpolation"));
set_msg_handler(pmt::mp("interpolation"),
boost::bind(&repeat_impl::msg_set_interpolation, this, _1));
}
void
repeat_impl::msg_set_interpolation(pmt::pmt_t msg)
{
// Dynamization by Kevin McQuiggin:
d_interp = pmt::to_long(pmt::cdr(msg));
sync_interpolator::set_interpolation(d_interp);
}
void
repeat_impl::set_interpolation(int interp)
{
// This ensures that interpolation is only changed between calls to work
// (and not in the middle of an ongoing work)
_post( pmt::mp("interpolation"), /* port */
pmt::cons(pmt::mp("interpolation"), pmt::from_long(interp)) /* pair */
);
}
int
repeat_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
const char *in = (const char *) input_items[0];
char *out = (char *)output_items[0];
for (int i = 0; i < noutput_items/d_interp; i++) {
for (int j = 0; j < d_interp; j++) {
memcpy(out, in, d_itemsize);
out += d_itemsize;
}
in += d_itemsize;
}
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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