howto_interp_scrambler_cc.h

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 /* -*- c++ -*- */
 /*
  * Copyright 2004 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.
  */ 
 
 /*
  * WARNING: This file is automatically generated by generate_gr_fir_filter_XXX.py
  * Any changes made to this file will be overwritten.
  */ 
 
 #ifndef INCLUDED_HOWTO_INTERP_SCRAMBLER_CC_H
 #define	INCLUDED_HOWTO_INTERP_SCRAMBLER_CC_H  
 
 #include <gr_sync_interpolator.h>
 #include "gri_float_lfsr.h" 
 
 class howto_interp_scrambler_cc;
 typedef boost::shared_ptr<howto_interp_scrambler_cc> howto_interp_scrambler_cc_sptr;
 howto_interp_scrambler_cc_sptr howto_make_interp_scrambler_cc (unsigned interpolation, int mask, int seed, int len); 
 
 /*!
  * Scramble 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.
  * 
  * \param mask     Polynomial mask for LFSR
  * \param seed     Initial shift register contents
  * \param len      Shift register length
  *
  * \ingroup coding_blk
  */
  
 class howto_interp_scrambler_cc : public gr_sync_interpolator
 {
  private:
   friend howto_interp_scrambler_cc_sptr howto_make_interp_scrambler_cc (unsigned interpolation, int mask, int seed, int len); 
 
   gri_float_lfsr d_lfsr;
   howto_interp_scrambler_cc(unsigned interpolation, int mask, int seed, int len);
   
  public:
   //~howto_interp_scrambler_cc ();
 
   int work (int noutput_items,
 	    gr_vector_const_void_star &input_items,
 	    gr_vector_void_star &output_items);
 };
 
 #endif
----

 /*!
  * Scramble 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.
  * \interpolation  拡散符号の周期
  * \param mask     Polynomial mask for LFSR
  * \param seed     Initial shift register contents
  * \param len      Shift register length
  *
  * \ingroup coding_blk
  */
  
 class howto_interp_scrambler_cc : public gr_sync_interpolator
 {
  private:
   friend howto_interp_scrambler_cc_sptr howto_make_interp_scrambler_cc (unsigned interpolation, int mask, int seed, int len); 
 
   gri_float_lfsr d_lfsr;
   howto_interp_scrambler_cc(unsigned interpolation, int mask, int seed, int len);
   
  public:
   //~howto_interp_scrambler_cc ();
 
   int work (int noutput_items,
 	    gr_vector_const_void_star &input_items,
 	    gr_vector_void_star &output_items);
 };
 
 #endif
----