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/* -*- c++ -*- */
/*
* Copyright 2020 Daniel Estevez <daniel@destevez.net>
*
* This file is part of gr-satellites
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "nrzi_encode_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace satellites {
nrzi_encode::sptr nrzi_encode::make()
{
return gnuradio::make_block_sptr<nrzi_encode_impl>();
}
/*
* The private constructor
*/
nrzi_encode_impl::nrzi_encode_impl()
: gr::sync_block("nrzi_encode",
gr::io_signature::make(1, 1, sizeof(uint8_t)),
gr::io_signature::make(1, 1, sizeof(uint8_t))),
d_last(0)
{
}
/*
* Our virtual destructor.
*/
nrzi_encode_impl::~nrzi_encode_impl() {}
int nrzi_encode_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const uint8_t* in = (const uint8_t*)input_items[0];
uint8_t* out = (uint8_t*)output_items[0];
for (int i = 0; i < noutput_items; ++i) {
out[i] = d_last = ~(in[i] ^ d_last) & 1;
}
return noutput_items;
}
} /* namespace satellites */
} /* namespace gr */
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