diff --git a/.gitignore b/.gitignore
index c81954f..ba24cc2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@ python/cache
apps/*.py
apps/*.pyc
build-manlap
+*.bak
diff --git a/grc/multirds_stream_router.xml b/grc/multirds_stream_router.xml
new file mode 100644
index 0000000..3b29719
--- /dev/null
+++ b/grc/multirds_stream_router.xml
@@ -0,0 +1,54 @@
+
+
+ stream_router
+ multirds_stream_router
+ [multirds]
+ import multirds
+ multirds.stream_router($ninputs, $noutputs)
+
+
+ Type
+ type
+ float
+ enum
+
+
+
+
+ Number of inputs
+ ninputs
+ 9
+ int
+
+
+ Number of outputs
+ noutputs
+ 3
+ int
+
+
+
+
+ in
+ $type
+ $ninputs
+
+
+ ctrl
+ message
+
+
+
+ out
+ $type
+ $noutputs
+
+
diff --git a/include/multirds/stream_router.h b/include/multirds/stream_router.h
new file mode 100644
index 0000000..02d33c4
--- /dev/null
+++ b/include/multirds/stream_router.h
@@ -0,0 +1,56 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2017 <+YOU OR YOUR COMPANY+>.
+ *
+ * This 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.
+ *
+ * This software 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 this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+
+#ifndef INCLUDED_MULTIRDS_STREAM_ROUTER_H
+#define INCLUDED_MULTIRDS_STREAM_ROUTER_H
+
+#include
+#include
+
+namespace gr {
+ namespace multirds {
+
+ /*!
+ * \brief <+description of block+>
+ * \ingroup multirds
+ *
+ */
+ class MULTIRDS_API stream_router : virtual public gr::sync_block
+ {
+ public:
+ typedef boost::shared_ptr sptr;
+
+ /*!
+ * \brief Return a shared_ptr to a new instance of multirds::stream_router.
+ *
+ * To avoid accidental use of raw pointers, multirds::stream_router's
+ * constructor is in a private implementation
+ * class. multirds::stream_router::make is the public interface for
+ * creating new instances.
+ */
+ static sptr make(int ninputs,int noutputs);
+ };
+
+ } // namespace multirds
+} // namespace gr
+
+#endif /* INCLUDED_MULTIRDS_STREAM_ROUTER_H */
+
diff --git a/lib/stream_router_impl.cc b/lib/stream_router_impl.cc
new file mode 100644
index 0000000..01ef6a3
--- /dev/null
+++ b/lib/stream_router_impl.cc
@@ -0,0 +1,70 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2017 <+YOU OR YOUR COMPANY+>.
+ *
+ * This 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.
+ *
+ * This software 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 this software; 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
+#include "stream_router_impl.h"
+
+namespace gr {
+ namespace multirds {
+
+ stream_router::sptr
+ stream_router::make(int ninputs,int noutputs)
+ {
+ return gnuradio::get_initial_sptr
+ (new stream_router_impl(ninputs, noutputs));
+ }
+
+ /*
+ * The private constructor
+ */
+ stream_router_impl::stream_router_impl(int ninputs,int noutputs)
+ : gr::sync_block("stream_router",
+ gr::io_signature::make(1, 1, sizeof(float)),
+ gr::io_signature::make(1, 1, sizeof(float)))
+ {}
+
+ /*
+ * Our virtual destructor.
+ */
+ stream_router_impl::~stream_router_impl()
+ {
+ }
+
+ int
+ stream_router_impl::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+ {
+ const float *in = (const float *) input_items[0];
+ float *out = (float *) output_items[0];
+
+ // Do <+signal processing+>
+
+ // Tell runtime system how many output items we produced.
+ return noutput_items;
+ }
+
+ } /* namespace multirds */
+} /* namespace gr */
+
diff --git a/lib/stream_router_impl.h b/lib/stream_router_impl.h
new file mode 100644
index 0000000..4ec443a
--- /dev/null
+++ b/lib/stream_router_impl.h
@@ -0,0 +1,48 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2017 <+YOU OR YOUR COMPANY+>.
+ *
+ * This 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.
+ *
+ * This software 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 this software; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#ifndef INCLUDED_MULTIRDS_STREAM_ROUTER_IMPL_H
+#define INCLUDED_MULTIRDS_STREAM_ROUTER_IMPL_H
+
+#include
+
+namespace gr {
+ namespace multirds {
+
+ class stream_router_impl : public stream_router
+ {
+ private:
+ // Nothing to declare in this block.
+
+ public:
+ stream_router_impl(int ninputs,int noutputs);
+ ~stream_router_impl();
+
+ // Where all the action really happens
+ int work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items);
+ };
+
+ } // namespace multirds
+} // namespace gr
+
+#endif /* INCLUDED_MULTIRDS_STREAM_ROUTER_IMPL_H */
+