GNU Radio 3.4.2 C++ API
atsci_fake_single_viterbi.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 
00023 #ifndef _ATSCFAKESINGLEVITERBI_H_
00024 #define _ATSCFAKESINGLEVITERBI_H_
00025 
00026 /*!
00027  * \brief single channel viterbi decoder
00028  */
00029 class atsci_fake_single_viterbi
00030 {
00031   
00032 public:
00033   atsci_fake_single_viterbi ();
00034 
00035   /*!
00036    * \p INPUT ideally takes on the values +/- 1,3,5,7
00037    * return is decoded dibit in the range [0, 3]
00038    */
00039   char decode (float input);
00040 
00041   void reset ();
00042 
00043   //! internal delay of decoder
00044   int delay () { return 0; }
00045 
00046 protected:
00047   int   post_coder_state;
00048 };
00049 
00050 #endif