From 60b3bd32aa145522a1eaf9978e594ed13b9a6bc5 Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Wed, 12 Oct 2011 19:02:47 -0400
Subject: digital: moved over all c++ blocks to gr-digital. Benchmark tx/rx
still working.
---
gr-digital/lib/digital_ofdm_cyclic_prefixer.cc | 70 ++++++++++++++++++++++++++
1 file changed, 70 insertions(+)
create mode 100644 gr-digital/lib/digital_ofdm_cyclic_prefixer.cc
(limited to 'gr-digital/lib/digital_ofdm_cyclic_prefixer.cc')
diff --git a/gr-digital/lib/digital_ofdm_cyclic_prefixer.cc b/gr-digital/lib/digital_ofdm_cyclic_prefixer.cc
new file mode 100644
index 0000000000..192af2591d
--- /dev/null
+++ b/gr-digital/lib/digital_ofdm_cyclic_prefixer.cc
@@ -0,0 +1,70 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2006,2010,2011 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 <digital_ofdm_cyclic_prefixer.h>
+#include <gr_io_signature.h>
+
+digital_ofdm_cyclic_prefixer_sptr
+digital_make_ofdm_cyclic_prefixer (size_t input_size, size_t output_size)
+{
+ return gnuradio::get_initial_sptr(new digital_ofdm_cyclic_prefixer (input_size,
+ output_size));
+}
+
+digital_ofdm_cyclic_prefixer::digital_ofdm_cyclic_prefixer (size_t input_size,
+ size_t output_size)
+ : gr_sync_interpolator ("ofdm_cyclic_prefixer",
+ gr_make_io_signature (1, 1, input_size*sizeof(gr_complex)),
+ gr_make_io_signature (1, 1, sizeof(gr_complex)),
+ output_size),
+ d_input_size(input_size),
+ d_output_size(output_size)
+
+{
+}
+
+int
+digital_ofdm_cyclic_prefixer::work (int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+{
+ gr_complex *in = (gr_complex *) input_items[0];
+ gr_complex *out = (gr_complex *) output_items[0];
+ size_t cp_size = d_output_size - d_input_size;
+ unsigned int i=0, j=0;
+
+ j = cp_size;
+ for(i=0; i < d_input_size; i++,j++) {
+ out[j] = in[i];
+ }
+
+ j = d_input_size - cp_size;
+ for(i=0; i < cp_size; i++, j++) {
+ out[i] = in[j];
+ }
+
+ return d_output_size;
+}
--
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