From e9a821632def12c450110e164d0d1c0275d41946 Mon Sep 17 00:00:00 2001
From: eb <eb@221aa14e-8319-0410-a670-987f0aec2ac5>
Date: Mon, 7 Aug 2006 16:28:55 +0000
Subject: Merged anastas/wip changes r3156:3218 into trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3219 221aa14e-8319-0410-a670-987f0aec2ac5
---
gr-trellis/src/lib/trellis_encoder_bi.cc | 76 ++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
create mode 100644 gr-trellis/src/lib/trellis_encoder_bi.cc
(limited to 'gr-trellis/src/lib/trellis_encoder_bi.cc')
diff --git a/gr-trellis/src/lib/trellis_encoder_bi.cc b/gr-trellis/src/lib/trellis_encoder_bi.cc
new file mode 100644
index 0000000000..968527b8f0
--- /dev/null
+++ b/gr-trellis/src/lib/trellis_encoder_bi.cc
@@ -0,0 +1,76 @@
+/* -*- 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_encoder_bi.h>
+#include <gr_io_signature.h>
+#include <iostream>
+
+trellis_encoder_bi_sptr
+trellis_make_encoder_bi (const fsm &FSM, const int ST)
+{
+ return trellis_encoder_bi_sptr (new trellis_encoder_bi (FSM,ST));
+}
+
+trellis_encoder_bi::trellis_encoder_bi (const fsm &FSM, const int ST)
+ : gr_sync_block ("encoder_bi",
+ gr_make_io_signature (1, -1, sizeof (unsigned char)),
+ gr_make_io_signature (1, -1, sizeof (int))),
+ d_FSM (FSM),
+ d_ST (ST)
+{
+}
+
+
+
+int
+trellis_encoder_bi::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ int d_ST_tmp;
+
+ assert (input_items.size() == output_items.size());
+ int nstreams = input_items.size();
+
+for (int m=0;m<nstreams;m++) {
+ const unsigned char *in = (const unsigned char *) input_items[m];
+ int *out = (int *) output_items[m];
+ d_ST_tmp = d_ST;
+
+// per stream processing
+
+ for (int i = 0; i < noutput_items; i++){
+ out[i] = (int) d_FSM.OS()[d_ST_tmp*d_FSM.I()+in[i]]; // direction of time?
+ d_ST_tmp = (int) d_FSM.NS()[d_ST_tmp*d_FSM.I()+in[i]];
+ }
+
+// end per stream processing
+}
+ d_ST = d_ST_tmp;
+
+ return noutput_items;
+}
+
--
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