atsci_basic_trellis_encoder.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2002 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 #ifndef _ATSC_BASIC_TRELLIS_ENCODER_H_
00023 #define _ATSC_BASIC_TRELLIS_ENCODER_H_
00024 
00025 #include <assert.h>
00026 
00039 class atsci_basic_trellis_encoder {
00040 
00041 private:
00042   int               state;              // two bit state;
00043 
00044 public:
00045   atsci_basic_trellis_encoder () : state (0) {}
00046 
00051   int encode (unsigned int input);
00052 
00054   void reset () { state = 0; }
00055 
00056   static const unsigned char next_state[32];
00057   static const unsigned char out_symbol[32];
00058 };
00059 
00060 #endif /* _ATSC_BASIC_TRELLIS_ENCODER_H_ */

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