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diff --git a/gr-fec/lib/repetition_decoder_impl.h b/gr-fec/lib/repetition_decoder_impl.h
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+++ b/gr-fec/lib/repetition_decoder_impl.h
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+/* -*- c++ -*- */
+/*
+ * Copyright 2014 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_FEC_REPETITION_DECODER_IMPL_H
+#define INCLUDED_FEC_REPETITION_DECODER_IMPL_H
+
+#include <vector>
+#include <algorithm>
+#include <string>
+#include <gnuradio/fec/repetition_decoder.h>
+
+namespace gr {
+  namespace fec {
+    namespace code {
+
+      class FEC_API repetition_decoder_impl : public repetition_decoder
+      {
+      private:
+        //plug into the generic fec api
+        void generic_work(void *inbuffer, void *outbuffer);
+        int get_output_size();
+        int get_input_size();
+        int get_input_item_size();
+        float get_shift();
+        const char* get_input_conversion();
+        //const char* get_output_conversion();
+
+        unsigned int d_max_frame_size;
+        unsigned int d_frame_size;
+        unsigned int d_rep;
+        float d_ap_prob;
+
+        std::vector<float> d_trials;
+
+      public:
+        repetition_decoder_impl(int frame_size, int rep,
+                                float ap_prob=0.5);
+        ~repetition_decoder_impl();
+
+        bool set_frame_size(unsigned int frame_size);
+        double rate();
+      };
+
+    } /* namespace code */
+  } /* namespace fec */
+} /* namespace gr */
+
+#endif /* INCLUDED_FEC_REPETITION_DECODER_IMPL_H */