descrambler_bb.h

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/* -*- c++ -*- */
/*
 * Copyright 2008,2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */
 
#ifndef INCLUDED_GR_DESCRAMBLER_BB_H
#define INCLUDED_GR_DESCRAMBLER_BB_H
 
#include <gnuradio/digital/api.h>
#include <gnuradio/sync_block.h>
 
namespace gr {
namespace digital {
 
/*!
 * \brief Descramber an input stream using an LFSR.
 * \ingroup coding_blk
 *
 * \details
 * Descramble an input stream using an LFSR. This block works on
 * the LSB only of the input data stream, i.e., on an "unpacked
 * binary" stream, and produces the same format on its output.
 */
class DIGITAL_API descrambler_bb : virtual public sync_block
{
public:
    // gr::digital::descrambler_bb::sptr
    typedef std::shared_ptr<descrambler_bb> sptr;
 
    /*!
     * \brief Make a descrambler block.
     *
     * \param mask     Polynomial mask for LFSR
     * \param seed     Initial shift register contents
     * \param len      Shift register length
     */
    static sptr make(int mask, int seed, int len);
};
 
} /* namespace digital */
} /* namespace gr */
 
#endif /* INCLUDED_GR_DESCRAMBLER_BB_H */