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-rw-r--r--gr-atsc/lib/atsci_single_viterbi.cc100
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diff --git a/gr-atsc/lib/atsci_single_viterbi.cc b/gr-atsc/lib/atsci_single_viterbi.cc
deleted file mode 100644
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--- a/gr-atsc/lib/atsci_single_viterbi.cc
+++ /dev/null
@@ -1,100 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2002 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.
- */
-
-#include <math.h>
-#include <gnuradio/atsc/single_viterbi_impl.h>
-#include <iostream>
-
-using std::cerr;
-using std::cout;
-
-const float atsci_single_viterbi::was_sent[32] = {
- -7,-3,-7,-3,-7,-3,-7,-3,
- -5,-1,-5,-1,-5,-1,-5,-1,
- 1,5,1,5,1,5,1,5,
- 3,7,3,7,3,7,3,7
-};
-
-const int atsci_single_viterbi::transition_table[32] = {
- 0,2,4,6,
- 2,0,6,4,
- 1,3,5,7,
- 3,1,7,5,
- 4,6,0,2,
- 6,4,2,0,
- 5,7,1,3,
- 7,5,3,1
-};
-
-void
-atsci_single_viterbi::reset()
-{
- for (unsigned int i = 0; i<2; i++)
- for (unsigned int j = 0; j<8; j++) {
- path_metrics[i][j] = 0;
- traceback[i][j] = 0;
- }
- phase = 0;
-}
-
-atsci_single_viterbi::atsci_single_viterbi()
-{
- reset();
-}
-
-char
-atsci_single_viterbi::decode(float input)
-{
- for (unsigned int next_state = 0; next_state < 8; next_state++) {
- unsigned int index = next_state << 2;
- int min_metric_symb = 0;
- float min_metric = fabs(input - was_sent[index + 0]) +
- path_metrics[phase][transition_table[index + 0]];
-
- for (unsigned int symbol_sent = 1; symbol_sent < 4; symbol_sent++)
- if( (fabs(input-was_sent[index+symbol_sent]) +
- path_metrics[phase][transition_table[index+symbol_sent]])
- < min_metric) {
- min_metric = fabs(input-was_sent[index+symbol_sent]) +
- path_metrics[phase][transition_table[index+symbol_sent]];
- min_metric_symb = symbol_sent;
- }
-
- path_metrics[phase^1][next_state] = min_metric;
- traceback[phase^1][next_state] = (((unsigned long long)min_metric_symb) << 62) |
- (traceback[phase][transition_table[index+min_metric_symb]] >> 2);
- }
- unsigned int best_state = 0;
- float best_state_metric = path_metrics[phase^1][0];
- for (unsigned int state = 1; state < 8; state++)
- if(path_metrics[phase^1][state] < best_state_metric) {
- best_state = state;
- best_state_metric = path_metrics[phase^1][state];
- }
- if(best_state_metric > 10000) {
- for(unsigned int state = 0; state < 8; state++)
- path_metrics[phase^1][state] -= best_state_metric;
- // cerr << "Resetting Path Metrics from " << best_state_metric << " to 0\n";
- }
- phase ^= 1;
- return (0x3 & traceback[phase][best_state]);
-}