1 files changed, 90 insertions, 0 deletions
diff --git a/gr-digital/lib/packet_headergenerator_bb_impl.cc b/gr-digital/lib/packet_headergenerator_bb_impl.cc
new file mode 100644
index 0000000000..bcfaf6b63d
--- /dev/null
+++ b/gr-digital/lib/packet_headergenerator_bb_impl.cc
@@ -0,0 +1,90 @@
+/* -*- 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gr_io_signature.h>
+#include "packet_headergenerator_bb_impl.h"
+
+namespace gr {
+  namespace digital {
+
+    packet_headergenerator_bb::sptr
+    packet_headergenerator_bb::make(const packet_header_default::sptr &header_formatter)
+    {
+      return gnuradio::get_initial_sptr (new packet_headergenerator_bb_impl(header_formatter));
+    }
+
+
+    packet_headergenerator_bb::sptr
+    packet_headergenerator_bb::make(
+      long header_len,
+      const std::string &len_tag_key
+    )
+    {
+      const packet_header_default::sptr header_formatter(
+	  new packet_header_default(header_len, len_tag_key)
+      );
+      return gnuradio::get_initial_sptr (new packet_headergenerator_bb_impl(header_formatter));
+    }
+
+
+    packet_headergenerator_bb_impl::packet_headergenerator_bb_impl(
+		    const gr::digital::packet_header_default::sptr &header_formatter
+		    )
+      : gr_tagged_stream_block("packet_headergenerator_bb_impl",
+		       gr_make_io_signature(1, 1, sizeof (char)),
+		       gr_make_io_signature(1, 1, sizeof (char)),
+		       pmt::symbol_to_string(header_formatter->len_tag_key())),
+	    d_formatter(header_formatter),
+	    d_input_size(1),
+	    d_header_len(header_formatter->header_len()),
+	    d_len_tag_value(pmt::from_long(d_header_len))
+    {
+      set_output_multiple(d_header_len);
+      // This is the worst case rate, because we don't know the true value, of course
+      set_relative_rate(d_header_len);
+      set_tag_propagation_policy(TPP_DONT);
+    }
+
+    packet_headergenerator_bb_impl::~packet_headergenerator_bb_impl()
+    {
+    }
+
+    int
+    packet_headergenerator_bb_impl::work (int noutput_items,
+                       gr_vector_int &ninput_items,
+                       gr_vector_const_void_star &input_items,
+                       gr_vector_void_star &output_items)
+    {
+      unsigned char *out = (unsigned char *) output_items[0];
+      if (!d_formatter->header_formatter(ninput_items[0], out)) {
+	throw std::runtime_error("header formatter returned false.");
+      }
+
+      return d_header_len;
+    }
+
+  } /* namespace digital */
+} /* namespace gr */
+