Added gr.copy(itemsize) block

set_enabled(bool) will either copy from input to output (True)
or drop the input on the floor (False).

1 files changed, 71 insertions, 0 deletions

diff --git a/gnuradio-core/src/lib/general/gr_copy.cc b/gnuradio-core/src/lib/general/gr_copy.cc
new file mode 100644
index 000000000..c6564c231
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_copy.cc
@@ -0,0 +1,71 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2009 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 <gr_copy.h>
+#include <gr_io_signature.h>
+#include <string.h>
+
+gr_copy_sptr
+gr_make_copy(size_t itemsize)
+{
+  return gnuradio::get_initial_sptr(new gr_copy(itemsize));
+}
+
+gr_copy::gr_copy(size_t itemsize)
+  : gr_block ("copy",
+	      gr_make_io_signature (1, 1, itemsize),
+	      gr_make_io_signature (1, 1, itemsize)),
+    d_itemsize(itemsize),
+    d_enabled(true)
+{
+}
+
+bool
+gr_copy::check_topology(int ninputs, int noutputs)
+{
+  return ninputs == noutputs;
+}
+
+int
+gr_copy::general_work(int noutput_items,
+		      gr_vector_int &ninput_items,
+		      gr_vector_const_void_star &input_items,
+		      gr_vector_void_star &output_items)
+{
+  const uint8_t *in = (const uint8_t *) input_items[0];
+  uint8_t *out = (uint8_t *) output_items[0];
+
+  int n = std::min<int>(ninput_items[0], noutput_items);
+  int j = 0;
+
+  if (d_enabled) {
+    memcpy(out, in, n*d_itemsize);
+    j = n;
+  }
+
+  consume_each(n);
+  return j;
+}