diff options
Diffstat (limited to 'gr-fec/lib/polar_decoder_sc_systematic.cc')
| -rw-r--r-- | gr-fec/lib/polar_decoder_sc_systematic.cc | 133 |
1 files changed, 65 insertions, 68 deletions
diff --git a/gr-fec/lib/polar_decoder_sc_systematic.cc b/gr-fec/lib/polar_decoder_sc_systematic.cc index 8eb6103112..cb51d8b227 100644 --- a/gr-fec/lib/polar_decoder_sc_systematic.cc +++ b/gr-fec/lib/polar_decoder_sc_systematic.cc @@ -1,19 +1,19 @@ /* -*- c++ -*- */ -/* +/* * Copyright 2015 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, @@ -29,76 +29,73 @@ #include <volk/volk.h> namespace gr { - namespace fec { - namespace code { +namespace fec { +namespace code { - generic_decoder::sptr - polar_decoder_sc_systematic::make(int block_size, int num_info_bits, - std::vector<int> frozen_bit_positions) - { - return generic_decoder::sptr( - new polar_decoder_sc_systematic(block_size, num_info_bits, frozen_bit_positions)); - } +generic_decoder::sptr polar_decoder_sc_systematic::make( + int block_size, int num_info_bits, std::vector<int> frozen_bit_positions) +{ + return generic_decoder::sptr( + new polar_decoder_sc_systematic(block_size, num_info_bits, frozen_bit_positions)); +} - polar_decoder_sc_systematic::polar_decoder_sc_systematic( - int block_size, int num_info_bits, std::vector<int> frozen_bit_positions) : - polar_decoder_common(block_size, num_info_bits, frozen_bit_positions, std::vector<char>()) - { - d_llr_vec = (float*) volk_malloc(sizeof(float) * block_size * (block_power() + 1), volk_get_alignment()); - memset(d_llr_vec, 0, sizeof(float) * block_size * (block_power() + 1)); - d_u_hat_vec = (unsigned char*) volk_malloc(block_size * (block_power() + 1), volk_get_alignment()); - memset(d_u_hat_vec, 0, sizeof(unsigned char) * block_size * (block_power() + 1)); - d_frame_vec = (unsigned char*) volk_malloc(block_size, volk_get_alignment()); - memset(d_frame_vec, 0, sizeof(unsigned char) * block_size); - } +polar_decoder_sc_systematic::polar_decoder_sc_systematic( + int block_size, int num_info_bits, std::vector<int> frozen_bit_positions) + : polar_decoder_common( + block_size, num_info_bits, frozen_bit_positions, std::vector<char>()) +{ + d_llr_vec = (float*)volk_malloc(sizeof(float) * block_size * (block_power() + 1), + volk_get_alignment()); + memset(d_llr_vec, 0, sizeof(float) * block_size * (block_power() + 1)); + d_u_hat_vec = (unsigned char*)volk_malloc(block_size * (block_power() + 1), + volk_get_alignment()); + memset(d_u_hat_vec, 0, sizeof(unsigned char) * block_size * (block_power() + 1)); + d_frame_vec = (unsigned char*)volk_malloc(block_size, volk_get_alignment()); + memset(d_frame_vec, 0, sizeof(unsigned char) * block_size); +} - polar_decoder_sc_systematic::~polar_decoder_sc_systematic() - { - volk_free(d_llr_vec); - volk_free(d_u_hat_vec); - volk_free(d_frame_vec); - } +polar_decoder_sc_systematic::~polar_decoder_sc_systematic() +{ + volk_free(d_llr_vec); + volk_free(d_u_hat_vec); + volk_free(d_frame_vec); +} - void - polar_decoder_sc_systematic::generic_work(void* in_buffer, void* out_buffer) - { - const float *in = (const float*) in_buffer; - unsigned char *out = (unsigned char*) out_buffer; +void polar_decoder_sc_systematic::generic_work(void* in_buffer, void* out_buffer) +{ + const float* in = (const float*)in_buffer; + unsigned char* out = (unsigned char*)out_buffer; - initialize_decoder(d_u_hat_vec, d_llr_vec, in); - sc_decode(d_llr_vec, d_u_hat_vec); - volk_encode_block(d_frame_vec, d_u_hat_vec); - extract_info_bits_reversed(out, d_frame_vec); - } + initialize_decoder(d_u_hat_vec, d_llr_vec, in); + sc_decode(d_llr_vec, d_u_hat_vec); + volk_encode_block(d_frame_vec, d_u_hat_vec); + extract_info_bits_reversed(out, d_frame_vec); +} - void - polar_decoder_sc_systematic::sc_decode(float* llrs, unsigned char* u) - { - for(int i = 0; i < block_size(); i++){ - butterfly(llrs, u, 0, i, i); - u[i] = retrieve_bit_from_llr(llrs[i], i); - } - } +void polar_decoder_sc_systematic::sc_decode(float* llrs, unsigned char* u) +{ + for (int i = 0; i < block_size(); i++) { + butterfly(llrs, u, 0, i, i); + u[i] = retrieve_bit_from_llr(llrs[i], i); + } +} - unsigned char - polar_decoder_sc_systematic::retrieve_bit_from_llr(float llr, const int pos) - { - if(is_frozen_bit(pos)){ - return next_frozen_bit(); - } - return llr_bit_decision(llr); - } +unsigned char polar_decoder_sc_systematic::retrieve_bit_from_llr(float llr, const int pos) +{ + if (is_frozen_bit(pos)) { + return next_frozen_bit(); + } + return llr_bit_decision(llr); +} - void - polar_decoder_sc_systematic::extract_info_bits_reversed(unsigned char* outbuf, - const unsigned char* inbuf) - { - for(int i = 0; i < num_info_bits(); i++){ - *outbuf++ = inbuf[d_info_bit_positions_reversed[i]]; - } - } +void polar_decoder_sc_systematic::extract_info_bits_reversed(unsigned char* outbuf, + const unsigned char* inbuf) +{ + for (int i = 0; i < num_info_bits(); i++) { + *outbuf++ = inbuf[d_info_bit_positions_reversed[i]]; + } +} - } // namespace code - } /* namespace fec */ +} // namespace code +} /* namespace fec */ } /* namespace gr */ - |