diff options
Diffstat (limited to 'gr-atsc/src/lib/atsc_viterbi_decoder.cc')
-rw-r--r-- | gr-atsc/src/lib/atsc_viterbi_decoder.cc | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/gr-atsc/src/lib/atsc_viterbi_decoder.cc b/gr-atsc/src/lib/atsc_viterbi_decoder.cc deleted file mode 100644 index 72b9a965b..000000000 --- a/gr-atsc/src/lib/atsc_viterbi_decoder.cc +++ /dev/null @@ -1,86 +0,0 @@ -/* -*- c++ -*- */ -/* - * Copyright 2006,2010 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 <atsc_viterbi_decoder.h> -#include <gr_io_signature.h> -#include <atsc_consts.h> -#include <iostream> - -using std::cerr; -using std::endl; - -atsc_viterbi_decoder_sptr -atsc_make_viterbi_decoder() -{ - return gnuradio::get_initial_sptr(new atsc_viterbi_decoder()); -} - -atsc_viterbi_decoder::atsc_viterbi_decoder() - : gr_sync_block("atsc_viterbi_decoder", - gr_make_io_signature(1, 1, sizeof(atsc_soft_data_segment)), - gr_make_io_signature(1, 1, sizeof(atsc_mpeg_packet_rs_encoded))), - last_start(-1) -{ - set_output_multiple(atsci_viterbi_decoder::NCODERS); - reset(); -} - -int -atsc_viterbi_decoder::work (int noutput_items, - gr_vector_const_void_star &input_items, - gr_vector_void_star &output_items) -{ - const atsc_soft_data_segment *in = (const atsc_soft_data_segment *) input_items[0]; - atsc_mpeg_packet_rs_encoded *out = (atsc_mpeg_packet_rs_encoded *) output_items[0]; - - assert (noutput_items % atsci_viterbi_decoder::NCODERS == 0); - - // find the first mod 12 boundary to begin decoding - int start; - for (start = 0; start < atsci_viterbi_decoder::NCODERS; start++){ - assert (in[start].pli.regular_seg_p ()); - if ((in[start].pli.segno () % atsci_viterbi_decoder::NCODERS) == 0) - break; - } - - if (start == atsci_viterbi_decoder::NCODERS){ - // we didn't find a mod 12 boundary. There's some kind of problem - // upstream of us (not yet sync'd??) - cerr << "!!!atsc_viterbi_decoder: no mod-12 boundary found\7\n"; - start = 0; - } - else if (start != last_start){ - cerr << "atsc_viterbi_decoder: new starting offset = " << start - << endl; - last_start = start; - } - - for (int i = 0; i < atsci_viterbi_decoder::NCODERS; i += atsci_viterbi_decoder::NCODERS){ - d_viterbi_decoder.decode(&out[i], &in[i + start]); - } - return atsci_viterbi_decoder::NCODERS; -} - |