1 files changed, 132 insertions, 0 deletions
diff --git a/gr-blocks/lib/multiply_impl.cc b/gr-blocks/lib/multiply_impl.cc
new file mode 100644
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--- /dev/null
+++ b/gr-blocks/lib/multiply_impl.cc
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+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2009,2010,2012,2018 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 "multiply_impl.h"
+#include <gnuradio/io_signature.h>
+#include <volk/volk.h>
+
+namespace gr {
+  namespace blocks {
+
+    template <class T>
+    typename multiply<T>::sptr multiply<T>::make(size_t vlen)
+    {
+      return gnuradio::get_initial_sptr(new multiply_impl<T> (vlen));
+    }
+
+    template <>
+    multiply_impl<float>::multiply_impl(size_t vlen)
+      : sync_block("multiply_ff",
+                   io_signature::make (1, -1, sizeof(float)*vlen),
+                   io_signature::make (1,  1, sizeof(float)*vlen)),
+        d_vlen(vlen)
+    {
+      const int alignment_multiple =
+        volk_get_alignment() / sizeof(float);
+      set_alignment(std::max(1, alignment_multiple));
+    }
+
+    template<>
+    int
+    multiply_impl<float>::work(int noutput_items,
+                               gr_vector_const_void_star &input_items,
+                               gr_vector_void_star &output_items)
+    {
+      float *out = (float *) output_items[0];
+      int noi = d_vlen*noutput_items;
+
+      memcpy(out, input_items[0], noi*sizeof(float));
+      for(size_t i = 1; i < input_items.size(); i++)
+        volk_32f_x2_multiply_32f(out, out, (float*)input_items[i], noi);
+
+      return noutput_items;
+    }
+
+    template <>
+    multiply_impl<gr_complex>::multiply_impl(size_t vlen)
+      : sync_block("multiply_cc",
+                   io_signature::make (1, -1, sizeof(gr_complex)*vlen),
+                   io_signature::make (1,  1, sizeof(gr_complex)*vlen)),
+        d_vlen(vlen)
+    {
+      const int alignment_multiple =
+        volk_get_alignment() / sizeof(gr_complex);
+      set_alignment(std::max(1, alignment_multiple));
+    }
+
+    template <>
+    int
+    multiply_impl<gr_complex>::work(int noutput_items,
+                                    gr_vector_const_void_star &input_items,
+                                    gr_vector_void_star &output_items)
+    {
+      gr_complex *out = (gr_complex *) output_items[0];
+      int noi = d_vlen*noutput_items;
+
+      memcpy(out, input_items[0], noi*sizeof(gr_complex));
+      for(size_t i = 1; i < input_items.size(); i++)
+        volk_32fc_x2_multiply_32fc(out, out, (gr_complex*)input_items[i], noi);
+
+      return noutput_items;
+    }
+
+    template <class T>
+    multiply_impl<T> ::multiply_impl(size_t vlen)
+      : sync_block ("multiply",
+		       io_signature::make (1, -1, sizeof (T)*vlen),
+		       io_signature::make (1,  1, sizeof (T)*vlen)),
+      d_vlen(vlen)
+    {
+    }
+
+    template <class T>
+    int
+    multiply_impl<T> ::work(int noutput_items,
+		      gr_vector_const_void_star &input_items,
+		      gr_vector_void_star &output_items)
+    {
+      T *optr = (T *) output_items[0];
+
+      int ninputs = input_items.size ();
+
+      for (size_t i = 0; i < noutput_items*d_vlen; i++){
+	T acc = ((T *) input_items[0])[i];
+	for (int j = 1; j < ninputs; j++)
+	  acc *= ((T *) input_items[j])[i];
+
+	*optr++ = (T) acc;
+      }
+
+      return noutput_items;
+    }
+
+template class multiply<std::int16_t>;
+template class multiply<std::int32_t>;
+template class multiply<gr_complex>;
+template class multiply<float>;
+  } /* namespace blocks */
+} /* namespace gr */