1 files changed, 64 insertions, 0 deletions
diff --git a/gr-atsc/include/atsc/GrAtscSegSymSync.h b/gr-atsc/include/atsc/GrAtscSegSymSync.h
new file mode 100644
index 0000000000..750483f544
--- /dev/null
+++ b/gr-atsc/include/atsc/GrAtscSegSymSync.h
@@ -0,0 +1,64 @@
+/* -*- 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.
+ */
+
+#ifndef _GRATSCSEGSYMSYNC_H_
+#define _GRATSCSEGSYMSYNC_H_
+
+#include <VrDecimatingSigProc.h>
+
+/*!
+ * \brief ATSC SegSymSync
+ *
+ * Abstract class that establishes symbol timing and synchronizes
+ * with data segment boundaries.
+ *
+ * Takes a single stream of floats as the input and
+ * produces two streams as output.  The first stream is the data samples
+ * and is of type float.  The second stream is the tags, and is of type syminfo.
+ *
+ * The current GNU Radio interface doesn't currently support different
+ * types on the input ports (or output ports for that matter), but
+ * since they are the same size, it works.
+ */
+
+#include <atsci_syminfo.h>
+
+class GrAtscSegSymSync : public VrDecimatingSigProc<float,float> {
+
+public:
+
+  GrAtscSegSymSync ();
+  ~GrAtscSegSymSync ();
+
+  /*!
+   * \brief reset bit timing loop on channel change
+   */
+  virtual void reset () = 0;
+
+  /*!
+   * \brief create an instance of GrAtscSegSymSync
+   */
+  static GrAtscSegSymSync *create (double nominal_ratio_of_rx_clock_to_symbol_freq);
+
+};
+
+#endif // _GRATSCSEGSYMSYNC_H_