1 files changed, 67 insertions, 0 deletions
diff --git a/gr-atsc/lib/qa_atsci_basic_trellis_encoder.cc b/gr-atsc/lib/qa_atsci_basic_trellis_encoder.cc
new file mode 100644
index 0000000000..2b64759c1f
--- /dev/null
+++ b/gr-atsc/lib/qa_atsci_basic_trellis_encoder.cc
@@ -0,0 +1,67 @@
+/* -*- 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <cppunit/TestAssert.h>
+#include "qa_atsci_basic_trellis_encoder.h"
+#include <stdlib.h>
+#include <stdio.h>
+
+void
+qa_atsci_basic_trellis_encoder::t0 ()
+{
+  const static unsigned char in[14] = {
+    0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 2, 3
+  };
+
+  const static unsigned char expected_out[14] = {
+    0, 2, 3, 1, 1, 3, 0, 1, 2, 0, 0, 2, 5, 2
+  };
+
+  for (unsigned i = 0; i < sizeof (in); i++)
+    CPPUNIT_ASSERT_EQUAL ((int) expected_out[i], enc.encode (in[i]));
+
+  // reset encoder and test again.
+
+  enc.reset ();
+  for (unsigned i = 0; i < sizeof (in); i++)
+    CPPUNIT_ASSERT_EQUAL ((int) expected_out[i], enc.encode (in[i]));
+}
+
+
+void
+qa_atsci_basic_trellis_encoder::t1 ()
+{
+  // Print data to externally check distribution.
+  // looks OK.
+#if 0
+  srandom (27);
+
+  for (int i = 0; i < 8192; i++){
+    int	t = (random () >> 10) & 0x3;	// 2 random bits
+    printf ("%d  %d\n", t, enc.encode (t));
+  }
+#endif
+}