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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
*
*/
#ifndef INCLUDED_DIGITAL_ADDITIVE_SCRAMBLER_BB_IMPL_H
#define INCLUDED_DIGITAL_ADDITIVE_SCRAMBLER_BB_IMPL_H
#include <gnuradio/digital/additive_scrambler_bb.h>
#include <gnuradio/digital/lfsr.h>
namespace gr {
namespace digital {
class additive_scrambler_bb_impl : public additive_scrambler_bb
{
private:
digital::lfsr d_lfsr;
int64_t d_count; //!< Reset the LFSR after this many bytes (not bits)
uint64_t d_bytes; //!< Count the processed bytes
uint8_t d_len;
uint64_t d_seed;
uint8_t d_bits_per_byte;
pmt::pmt_t d_reset_tag_key; //!< Reset the LFSR when this tag is received
int64_t _get_next_reset_index(int64_t noutput_items, int64_t last_reset_index = -1);
public:
additive_scrambler_bb_impl(uint64_t mask,
uint64_t seed,
uint8_t len,
int64_t count = 0,
uint8_t bits_per_byte = 1,
const std::string& reset_tag_key = "");
~additive_scrambler_bb_impl() override;
uint64_t mask() const override;
uint64_t seed() const override;
uint8_t len() const override;
int64_t count() const override;
uint8_t bits_per_byte() override { return d_bits_per_byte; };
int work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items) override;
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_DIGITAL_ADDITIVE_SCRAMBLER_BB_IMPL_H */
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