From ebd3845a6aac08b8b7058963e1d72c93d652f2f3 Mon Sep 17 00:00:00 2001
From: anastas <anastas@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Fri, 11 Aug 2006 07:03:03 +0000
Subject: 1) Minor correction in Viterbi. 2) Checked in interleaver structure
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3232 221aa14e-8319-0410-a670-987f0aec2ac5
---
gr-trellis/src/lib/trellis_permutation.cc | 73 +++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 gr-trellis/src/lib/trellis_permutation.cc
(limited to 'gr-trellis/src/lib/trellis_permutation.cc')
diff --git a/gr-trellis/src/lib/trellis_permutation.cc b/gr-trellis/src/lib/trellis_permutation.cc
new file mode 100644
index 0000000000..78bdbaf461
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_permutation.cc
@@ -0,0 +1,73 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004 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 2, 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <trellis_permutation.h>
+#include <gr_io_signature.h>
+#include <iostream>
+
+trellis_permutation_sptr
+trellis_make_permutation (const int K, const std::vector<int> &TABLE, const size_t NBYTES)
+{
+ return trellis_permutation_sptr (new trellis_permutation (K,TABLE,NBYTES));
+}
+
+trellis_permutation::trellis_permutation (const int K, const std::vector<int> &TABLE, const size_t NBYTES)
+ : gr_sync_block ("permutation",
+ gr_make_io_signature (1, -1, NBYTES),
+ gr_make_io_signature (1, -1, NBYTES)),
+ d_K (K),
+ d_TABLE (TABLE),
+ d_NBYTES (NBYTES)
+{
+ set_output_multiple (d_K);
+ //std::cout << d_K << "\n";
+}
+
+
+
+int
+trellis_permutation::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ int nstreams = input_items.size();
+ assert (input_items.size() == output_items.size());
+ assert (noutput_items % d_K ==0);
+ //std::cout << noutput_items << "\n";
+
+ for (int m=0;m<nstreams;m++) {
+ const char *in = (const char *) input_items[m];
+ char *out = (char *) output_items[m];
+
+ // per stream processing
+ for (unsigned int i = 0; i < noutput_items; i++){
+ //std::cout << i << " " << i*d_NBYTES << " " << (d_K*(i/d_K)+d_TABLE[i%d_K])*d_NBYTES << "\n";
+ memcpy(&(out[i*d_NBYTES]), &(in[(d_K*(i/d_K)+d_TABLE[i%d_K])*d_NBYTES]), d_NBYTES);
+ }
+ // end per stream processing
+ }
+ return noutput_items;
+}
--
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