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/* -*- c++ -*- */
/*
* Copyright 2008,2010,2012 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "descrambler_bb_impl.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace digital {
descrambler_bb::sptr descrambler_bb::make(uint64_t mask, uint64_t seed, uint8_t len)
{
return gnuradio::make_block_sptr<descrambler_bb_impl>(mask, seed, len);
}
descrambler_bb_impl::descrambler_bb_impl(uint64_t mask, uint64_t seed, uint8_t len)
: sync_block("descrambler_bb",
io_signature::make(1, 1, sizeof(unsigned char)),
io_signature::make(1, 1, sizeof(unsigned char))),
d_lfsr(mask, seed, len)
{
}
descrambler_bb_impl::~descrambler_bb_impl() {}
int descrambler_bb_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const unsigned char* in = (const unsigned char*)input_items[0];
unsigned char* out = (unsigned char*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
out[i] = d_lfsr.next_bit_descramble(in[i]);
}
return noutput_items;
}
} /* namespace digital */
} /* namespace gr */
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