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diff --git a/gr-digital/include/digital/packet_headergenerator_bb.h b/gr-digital/include/digital/packet_headergenerator_bb.h
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+++ b/gr-digital/include/digital/packet_headergenerator_bb.h
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+/* -*- c++ -*- */
+/* Copyright 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_PACKET_HEADERGENERATOR_BB_H
+#define INCLUDED_PACKET_HEADERGENERATOR_BB_H
+
+#include <digital/api.h>
+#include <gr_tagged_stream_block.h>
+#include <digital/packet_header_default.h>
+
+namespace gr {
+  namespace digital {
+
+    /*!
+     * \brief Generates a header for a tagged, streamed packet.
+     * \ingroup packet_operators_blk
+     *
+     * \details
+     * Input: A tagged stream. This is consumed entirely, it is not appended
+     *        to the output stream.
+     * Output: An tagged stream containing the header. The details on the header
+     *         are set in a header formatter object (of type packet_header_default
+     *         or a subclass thereof). If only a number of bits is specified, a
+     *         default header is generated (see packet_header_default).
+     */
+    class DIGITAL_API packet_headergenerator_bb : virtual public gr_tagged_stream_block
+    {
+     public:
+      typedef boost::shared_ptr<packet_headergenerator_bb> sptr;
+
+      /* \param header_formatter A header formatter object.
+       * \param len_tag_key Length tag key. Note that for header generation,
+       *                    it is irrelevant which tag names are set in the
+       *                    formatter object, only this value is relevant!
+       */
+      static sptr make(
+	  const packet_header_default::sptr &header_formatter,
+	  const std::string &len_tag_key="packet_len"
+      );
+
+      /* \param header_len If this value is given, a packet_header_default
+       *                   object is used to generate the header. This is
+       *                   the number of bits per header.
+       * \param len_tag_key Length tag key.
+       */
+      static sptr make(
+	   long header_len,
+	   const std::string &len_tag_key = "packet_len");
+    };
+
+  } // namespace digital
+} // namespace gr
+
+#endif /* INCLUDED_PACKET_HEADERGENERATOR_BB_H */
+