1 files changed, 78 insertions, 0 deletions
diff --git a/gr-digital/lib/constellation_soft_decoder_cf_impl.cc b/gr-digital/lib/constellation_soft_decoder_cf_impl.cc
new file mode 100644
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+++ b/gr-digital/lib/constellation_soft_decoder_cf_impl.cc
@@ -0,0 +1,78 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2013 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 "constellation_soft_decoder_cf_impl.h"
+#include <gnuradio/io_signature.h>
+
+namespace gr {
+  namespace digital {
+
+    constellation_soft_decoder_cf::sptr
+    constellation_soft_decoder_cf::make(constellation_sptr constellation)
+    {
+      return gnuradio::get_initial_sptr
+	(new constellation_soft_decoder_cf_impl(constellation));
+    }
+
+    constellation_soft_decoder_cf_impl::
+    constellation_soft_decoder_cf_impl(constellation_sptr constellation)
+      : sync_interpolator("constellation_soft_decoder_cf",
+                          io_signature::make(1, 1, sizeof(gr_complex)),
+                          io_signature::make(1, 1, sizeof(float)),
+                          constellation->bits_per_symbol()),
+	d_constellation(constellation),
+	d_dim(constellation->dimensionality()),
+        d_bps(constellation->bits_per_symbol())
+    {
+    }
+
+    constellation_soft_decoder_cf_impl::~constellation_soft_decoder_cf_impl()
+    {
+    }
+
+    int
+    constellation_soft_decoder_cf_impl::work(int noutput_items,
+                                             gr_vector_const_void_star &input_items,
+                                             gr_vector_void_star &output_items)
+    {
+      gr_complex const *in = (const gr_complex*)input_items[0];
+      float *out = (float*)output_items[0];
+
+      std::vector<float> bits;
+
+      // FIXME: figure out how to manage d_dim
+      for(int i = 0; i < noutput_items/d_bps; i++) {
+	bits = d_constellation->soft_decision_maker(in[i]);
+        for(size_t j = 0; j < bits.size(); j++) {
+          out[d_bps*i+j] = bits[j];
+        }
+      }
+
+      return noutput_items;
+    }
+
+  } /* namespace digital */
+} /* namespace gr */