diff options
Diffstat (limited to 'gr-trellis/lib/pccc_decoder_blk_impl.cc')
| -rw-r--r-- | gr-trellis/lib/pccc_decoder_blk_impl.cc | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/gr-trellis/lib/pccc_decoder_blk_impl.cc b/gr-trellis/lib/pccc_decoder_blk_impl.cc new file mode 100644 index 0000000000..3cadff97ea --- /dev/null +++ b/gr-trellis/lib/pccc_decoder_blk_impl.cc @@ -0,0 +1,125 @@ +/* -*- 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 "pccc_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 pccc_decoder_blk<T>::sptr + pccc_decoder_blk<T>::make(const fsm &FSM1, int ST10, int ST1K, + const fsm &FSM2, int ST20, int ST2K, + const interleaver &INTERLEAVER, + int blocklength, + int repetitions, + siso_type_t SISO_TYPE) + { + return gnuradio::get_initial_sptr + (new pccc_decoder_blk_impl<T>(FSM1, ST10, ST1K, + FSM2, ST20, ST2K, + INTERLEAVER, + blocklength, + repetitions, + SISO_TYPE)); + } + + template <class T> + pccc_decoder_blk_impl<T>::pccc_decoder_blk_impl(const fsm &FSM1, int ST10, int ST1K, + const fsm &FSM2, int ST20, int ST2K, + const interleaver &INTERLEAVER, + int blocklength, + int repetitions, + siso_type_t SISO_TYPE) + : block("pccc_decoder_blk", + io_signature::make(1, 1, sizeof(float)), + io_signature::make(1, 1, sizeof(T))), + d_FSM1(FSM1), d_ST10(ST10), d_ST1K(ST1K), + d_FSM2(FSM2), d_ST20(ST20), d_ST2K(ST2K), + d_INTERLEAVER(INTERLEAVER), + d_blocklength(blocklength), + d_repetitions(repetitions), + d_SISO_TYPE(SISO_TYPE) + { + this->set_relative_rate (1.0 / ((double) d_FSM1.O() * d_FSM2.O())); + this->set_output_multiple (d_blocklength); + } + + template <class T> + pccc_decoder_blk_impl<T>::~pccc_decoder_blk_impl() + { + } + + template <class T> + void + pccc_decoder_blk_impl<T>::forecast(int noutput_items, + gr_vector_int &ninput_items_required) + { + int input_required = d_FSM1.O() * d_FSM2.O() * noutput_items; + ninput_items_required[0] = input_required; + } + + //=========================================================== + + template <class T> + int + pccc_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++) { + pccc_decoder(d_FSM1, d_ST10, d_ST1K, + d_FSM2, d_ST20, d_ST2K, + d_INTERLEAVER, d_blocklength, d_repetitions, + p2min, + &(in[n*d_blocklength*d_FSM1.O()*d_FSM2.O()]), + &(out[n*d_blocklength])); + } + + this->consume_each(d_FSM1.O() * d_FSM2.O() * noutput_items); + return noutput_items; + } + +template class pccc_decoder_blk<std::uint8_t>; +template class pccc_decoder_blk<std::int16_t>; +template class pccc_decoder_blk<std::int32_t>; + } /* namespace trellis */ +} /* namespace gr */ |