README change

1 files changed, 54 insertions, 0 deletions

diff --git a/gnuradio-core/src/lib/viterbi/encode.cc b/gnuradio-core/src/lib/viterbi/encode.cc
new file mode 100644
index 000000000..83a85fcac
--- /dev/null
+++ b/gnuradio-core/src/lib/viterbi/encode.cc
@@ -0,0 +1,54 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2008 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.
+ */
+
+/*
+ * This is a minimal example demonstrating how to call the ECC encoder
+ * in continuous streaming mode.  It accepts data on stdin and writes to
+ * stdout.
+ *
+ * FIXME: This does not flush the final bits out of the encoder.
+ *
+ */
+
+extern "C" {
+#include "viterbi.h"
+}
+
+#include <cstdio>
+
+#define MAXCHUNKSIZE 4096
+#define MAXENCSIZE MAXCHUNKSIZE*16
+
+int main()
+{
+  unsigned char encoder_state = 0;
+  unsigned char data[MAXCHUNKSIZE];
+  unsigned char syms[MAXENCSIZE];
+
+  while (!feof(stdin)) {
+    unsigned int n = fread(data, 1, MAXCHUNKSIZE, stdin);
+    encoder_state = encode(syms, data, n, encoder_state);
+    fwrite(syms, 1, n*16, stdout);
+  }
+
+  return 0;
+}