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| author | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
|---|---|---|
| committer | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
| commit | 254fe5e89403d4de1fa6663d09efdf946996aff3 (patch) | |
| tree | 62877d7ac7fdedf6c397c51e22ac6f97eba97ddf /gr-trellis/lib/sccc_decoder_blk_impl.cc | |
| parent | 896d1c9da31963ecf5b0d90942c2af51ca998a69 (diff) | |
| parent | 5ad935c3a3dd46ce2860b13e2b774e4841784616 (diff) | |
Merge remote-tracking branch 'origin/next' into merge_next
Diffstat (limited to 'gr-trellis/lib/sccc_decoder_blk_impl.cc')
| -rw-r--r-- | gr-trellis/lib/sccc_decoder_blk_impl.cc | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/gr-trellis/lib/sccc_decoder_blk_impl.cc b/gr-trellis/lib/sccc_decoder_blk_impl.cc new file mode 100644 index 0000000000..152079d94c --- /dev/null +++ b/gr-trellis/lib/sccc_decoder_blk_impl.cc @@ -0,0 +1,123 @@ +/* -*- c++ -*- */ +/* + * Copyright 2004,2010,2012,2018 Free Software Foundation, Inc. + * + * This file is part of GNU Radio + * + * GNU Radio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * GNU Radio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "sccc_decoder_blk_impl.h" +#include <gnuradio/io_signature.h> +#include <iostream> +#include <gnuradio/trellis/core_algorithms.h> + +namespace gr { + namespace trellis { + + template <class T> + typename sccc_decoder_blk<T>::sptr + sccc_decoder_blk<T>::make(const fsm &FSMo, int STo0, int SToK, + const fsm &FSMi, int STi0, int STiK, + const interleaver &INTERLEAVER, + int blocklength, + int repetitions, + siso_type_t SISO_TYPE) + { + return gnuradio::get_initial_sptr + (new sccc_decoder_blk_impl<T>(FSMo, STo0, SToK, FSMi, STi0, STiK, + INTERLEAVER, blocklength, repetitions, + SISO_TYPE)); + } + + template <class T> + sccc_decoder_blk_impl<T>::sccc_decoder_blk_impl(const fsm &FSMo, int STo0, int SToK, + const fsm &FSMi, int STi0, int STiK, + const interleaver &INTERLEAVER, + int blocklength, + int repetitions, + siso_type_t SISO_TYPE) + : block("sccc_decoder_blk", + io_signature::make(1, 1, sizeof(float)), + io_signature::make(1, 1, sizeof(T))), + d_FSMo(FSMo), d_STo0(STo0), d_SToK(SToK), + d_FSMi(FSMi), d_STi0(STi0), d_STiK(STiK), + d_INTERLEAVER(INTERLEAVER), + d_blocklength(blocklength), + d_repetitions(repetitions), + d_SISO_TYPE(SISO_TYPE) + { + this->set_relative_rate(1, (uint64_t) d_FSMi.O()); + this->set_output_multiple(d_blocklength); + } + + template <class T> + sccc_decoder_blk_impl<T>::~sccc_decoder_blk_impl() + { + } + + template <class T> + void + sccc_decoder_blk_impl<T>::forecast(int noutput_items, + gr_vector_int &ninput_items_required) + { + int input_required = d_FSMi.O() * noutput_items ; + ninput_items_required[0] = input_required; + } + + //=========================================================== + + template <class T> + int + sccc_decoder_blk_impl<T>::general_work(int noutput_items, + gr_vector_int &ninput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + int nblocks = noutput_items / d_blocklength; + float (*p2min)(float, float) = NULL; + + if(d_SISO_TYPE == TRELLIS_MIN_SUM) + p2min = &min; + else if(d_SISO_TYPE == TRELLIS_SUM_PRODUCT) + p2min = &min_star; + + const float *in = (const float*)input_items[0]; + T *out = (T*)output_items[0]; + + for(int n = 0; n < nblocks; n++) { + sccc_decoder(d_FSMo, d_STo0, d_SToK, + d_FSMi, d_STi0, d_STiK, + d_INTERLEAVER, d_blocklength, d_repetitions, + p2min, + &(in[n*d_blocklength*d_FSMi.O()]), + &(out[n*d_blocklength])); + } + + this->consume_each(d_FSMi.O() * noutput_items ); + return noutput_items; + } + +template class sccc_decoder_blk<std::uint8_t>; +template class sccc_decoder_blk<std::int16_t>; +template class sccc_decoder_blk<std::int32_t>; + } /* namespace trellis */ +} /* namespace gr */ |