1 files changed, 77 insertions, 0 deletions
diff --git a/gnuradio-core/src/lib/general/gr_interleave.cc b/gnuradio-core/src/lib/general/gr_interleave.cc
new file mode 100644
index 000000000..5d572871e
--- /dev/null
+++ b/gnuradio-core/src/lib/general/gr_interleave.cc
@@ -0,0 +1,77 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2010 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_interleave.h>
+#include <gr_io_signature.h>
+#include <string.h>
+
+
+gr_interleave_sptr
+gr_make_interleave (size_t itemsize)
+{
+  return gnuradio::get_initial_sptr(new gr_interleave (itemsize));
+}
+
+gr_interleave::gr_interleave (size_t itemsize)
+  : gr_sync_interpolator ("interleave",
+			  gr_make_io_signature (1, gr_io_signature::IO_INFINITE, itemsize),
+			  gr_make_io_signature (1, 1, itemsize),
+			  1),
+    d_itemsize (itemsize)
+{
+}
+
+gr_interleave::~gr_interleave ()
+{
+  // NOP
+}
+
+bool
+gr_interleave::check_topology (int ninputs, int noutputs)
+{
+  set_interpolation (ninputs);
+  return true;
+}
+
+int
+gr_interleave::work (int noutput_items,
+		     gr_vector_const_void_star &input_items,
+		     gr_vector_void_star &output_items)
+{
+  size_t nchan = input_items.size ();
+  size_t itemsize = d_itemsize;
+  const char **in = (const char **) &input_items[0];
+  char *out = (char *) output_items[0];
+
+  for (int i = 0; i < noutput_items; i += nchan){
+    for (unsigned int n = 0; n < nchan; n++){
+      memcpy (out, in[n], itemsize);
+      out += itemsize;
+      in[n] += itemsize;
+    }
+  }
+  return noutput_items;
+}