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diff --git a/gr-digital/include/digital_bytes_to_syms.h b/gr-digital/include/digital_bytes_to_syms.h
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+++ b/gr-digital/include/digital_bytes_to_syms.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2012 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 INCLUDED_GR_BYTES_TO_SYMS_H
+#define INCLUDED_GR_BYTES_TO_SYMS_H
+
+#include <digital_api.h>
+#include <gr_sync_interpolator.h>
+
+class digital_bytes_to_syms;
+typedef boost::shared_ptr<digital_bytes_to_syms> digital_bytes_to_syms_sptr;
+
+DIGITAL_API digital_bytes_to_syms_sptr digital_make_bytes_to_syms();
+
+/*!
+ * \brief Convert stream of bytes to stream of +/- 1 symbols
+ * \ingroup converter_blk
+ *
+ * input: stream of bytes; output: stream of float
+ *
+ * This block is deprecated.
+ *
+ * The combination of gr_packed_to_unpacked_bb followed by
+ * gr_chunks_to_symbols_bf or gr_chunks_to_symbols_bc handles the
+ * general case of mapping from a stream of bytes into arbitrary float
+ * or complex symbols.
+ *
+ * \sa gr_packed_to_unpacked_bb, gr_unpacked_to_packed_bb,
+ * \sa gr_chunks_to_symbols_bf, gr_chunks_to_symbols_bc.
+ */
+class DIGITAL_API digital_bytes_to_syms : public gr_sync_interpolator
+{
+  friend DIGITAL_API digital_bytes_to_syms_sptr
+    digital_make_bytes_to_syms();
+
+  digital_bytes_to_syms();
+
+ public:
+  int work (int noutput_items,
+	    gr_vector_const_void_star &input_items,
+	    gr_vector_void_star &output_items);
+};
+
+#endif /* INCLUDED_GR_BYTES_TO_SYMS_H */