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_ */