3 * Copyright 2008 Free Software Foundation, Inc.
5 * GNU Radio is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3, or (at your option)
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with GNU Radio; see the file COPYING. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street,
18 * Boston, MA 02110-1301, USA.
20 #ifndef INCLUDED_GR_ENCODE_CCSDS_27_BB_H
21 #define INCLUDED_GR_ENCODE_CCSDS_27_BB_H
23 #include <gr_sync_interpolator.h>
25 class gr_encode_ccsds_27_bb;
27 typedef boost::shared_ptr<gr_encode_ccsds_27_bb> gr_encode_ccsds_27_bb_sptr;
29 gr_encode_ccsds_27_bb_sptr gr_make_encode_ccsds_27_bb();
31 /*! \brief A rate 1/2, k=7 convolutional encoder for the CCSDS standard
34 * This block performs convolutional encoding using the CCSDS standard
35 * polynomial ("Voyager").
37 * The input is an MSB first packed stream of bits.
39 * The output is a stream of symbols 0 or 1 representing the encoded data.
41 * As a rate 1/2 code, there will be 16 output symbols for every input byte.
43 * This block is designed for continuous data streaming, not packetized data.
44 * There is no provision to "flush" the encoder.
47 class gr_encode_ccsds_27_bb : public gr_sync_interpolator
50 friend gr_encode_ccsds_27_bb_sptr gr_make_encode_ccsds_27_bb();
52 gr_encode_ccsds_27_bb();
53 unsigned char d_encstate;
56 ~gr_encode_ccsds_27_bb();
58 int work (int noutput_items,
59 gr_vector_const_void_star &input_items,
60 gr_vector_void_star &output_items);
63 #endif /* INCLUDED_GR_ENCODE_CCSDS_27_BB_H */