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/* -*- c++ -*- */
/*
* Copyright 2007,2010,2013,2018 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 "sample_and_hold_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace blocks {
template <class T>
typename sample_and_hold<T>::sptr sample_and_hold<T>::make()
{
return gnuradio::get_initial_sptr(new sample_and_hold_impl<T>());
}
template <class T>
sample_and_hold_impl<T>::sample_and_hold_impl()
: sync_block("sample_and_hold",
io_signature::make2(2, 2, sizeof(T), sizeof(char)),
io_signature::make(1, 1, sizeof(T))),
d_data(0)
{
}
template <class T>
sample_and_hold_impl<T>::~sample_and_hold_impl()
{
}
template <class T>
int sample_and_hold_impl<T>::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
T* iptr = (T*)input_items[0];
const char* ctrl = (const char*)input_items[1];
T* optr = (T*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
if (ctrl[i]) {
d_data = iptr[i];
}
optr[i] = d_data;
}
return noutput_items;
}
template class sample_and_hold<std::uint8_t>;
template class sample_and_hold<std::int16_t>;
template class sample_and_hold<std::int32_t>;
template class sample_and_hold<float>;
} /* namespace blocks */
} /* namespace gr */
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