GNU Radio 3.5.3.2 C++ API
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00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2008 Free Software Foundation, Inc. 00004 * 00005 * GNU Radio is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License as published by 00007 * the Free Software Foundation; either version 3, or (at your option) 00008 * any later version. 00009 * 00010 * GNU Radio is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with GNU Radio; see the file COPYING. If not, write to 00017 * the Free Software Foundation, Inc., 51 Franklin Street, 00018 * Boston, MA 02110-1301, USA. 00019 */ 00020 #ifndef INCLUDED_GR_ENCODE_CCSDS_27_BB_H 00021 #define INCLUDED_GR_ENCODE_CCSDS_27_BB_H 00022 00023 #include <gr_core_api.h> 00024 #include <gr_sync_interpolator.h> 00025 00026 class gr_encode_ccsds_27_bb; 00027 00028 typedef boost::shared_ptr<gr_encode_ccsds_27_bb> gr_encode_ccsds_27_bb_sptr; 00029 00030 GR_CORE_API gr_encode_ccsds_27_bb_sptr gr_make_encode_ccsds_27_bb(); 00031 00032 /*! \brief A rate 1/2, k=7 convolutional encoder for the CCSDS standard 00033 * \ingroup ecc 00034 * 00035 * This block performs convolutional encoding using the CCSDS standard 00036 * polynomial ("Voyager"). 00037 * 00038 * The input is an MSB first packed stream of bits. 00039 * 00040 * The output is a stream of symbols 0 or 1 representing the encoded data. 00041 * 00042 * As a rate 1/2 code, there will be 16 output symbols for every input byte. 00043 * 00044 * This block is designed for continuous data streaming, not packetized data. 00045 * There is no provision to "flush" the encoder. 00046 */ 00047 00048 class GR_CORE_API gr_encode_ccsds_27_bb : public gr_sync_interpolator 00049 { 00050 private: 00051 friend GR_CORE_API gr_encode_ccsds_27_bb_sptr gr_make_encode_ccsds_27_bb(); 00052 00053 gr_encode_ccsds_27_bb(); 00054 unsigned char d_encstate; 00055 00056 public: 00057 ~gr_encode_ccsds_27_bb(); 00058 00059 int work (int noutput_items, 00060 gr_vector_const_void_star &input_items, 00061 gr_vector_void_star &output_items); 00062 }; 00063 00064 #endif /* INCLUDED_GR_ENCODE_CCSDS_27_BB_H */