From 6a2d514fab10f692d49f724d1d09afce1c603fa0 Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <jcorgan@corganenterprises.com>
Date: Thu, 14 Jun 2012 10:09:14 -0700
Subject: blocks: added multiply_xx, some cleanup on add_xx
---
gr-blocks/lib/multiply_ff_impl.cc | 71 +++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 gr-blocks/lib/multiply_ff_impl.cc
(limited to 'gr-blocks/lib/multiply_ff_impl.cc')
diff --git a/gr-blocks/lib/multiply_ff_impl.cc b/gr-blocks/lib/multiply_ff_impl.cc
new file mode 100644
index 0000000000..6e8f277114
--- /dev/null
+++ b/gr-blocks/lib/multiply_ff_impl.cc
@@ -0,0 +1,71 @@
+/* -*- 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 <multiply_ff_impl.h>
+#include <gr_io_signature.h>
+#include <volk/volk.h>
+
+namespace gr {
+ namespace blocks {
+
+ multiply_ff::sptr multiply_ff::make(size_t vlen)
+ {
+ return gnuradio::get_initial_sptr(new multiply_ff_impl(vlen));
+ }
+
+ multiply_ff_impl::multiply_ff_impl(size_t vlen)
+ : gr_sync_block("multiply_ff",
+ gr_make_io_signature (1, -1, sizeof(float)*vlen),
+ gr_make_io_signature (1, 1, sizeof(float)*vlen)),
+ d_vlen(vlen)
+ {
+ const int alignment_multiple =
+ volk_get_alignment() / sizeof(float);
+ set_alignment(std::max(1, alignment_multiple));
+ }
+
+ int
+ multiply_ff_impl::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));
+ if(is_unaligned()) {
+ for(size_t i = 1; i < input_items.size(); i++)
+ volk_32f_x2_multiply_32f_u(out, out, (float*)input_items[i], noi);
+ }
+ else {
+ for(size_t i = 1; i < input_items.size(); i++)
+ volk_32f_x2_multiply_32f_a(out, out, (float*)input_items[i], noi);
+ }
+ return noutput_items;
+ }
+
+ } /* namespace blocks */
+}/* namespace gr */
--
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