1 files changed, 92 insertions, 0 deletions
diff --git a/gr-blocks/lib/pdu.cc b/gr-blocks/lib/pdu.cc
new file mode 100644
index 0000000000..41a2d88c3a
--- /dev/null
+++ b/gr-blocks/lib/pdu.cc
@@ -0,0 +1,92 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2013 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 <blocks/pdu.h>
+
+namespace gr {
+  namespace blocks {
+    namespace pdu {
+
+      size_t 
+      itemsize(vector_type type)
+      {
+	switch(type) {
+	case byte_t:
+	  return sizeof(char);
+	case float_t:
+	  return sizeof(float);
+	case complex_t:
+	  return sizeof(gr_complex);
+	default:
+	  throw std::runtime_error("bad PDU type");
+	}
+      }
+
+      bool
+      type_matches(vector_type type, pmt::pmt_t v)
+      {
+	switch(type) {
+	case byte_t:
+	  return pmt::pmt_is_u8vector(v);
+	case float_t:
+	  return pmt::pmt_is_f32vector(v);
+	case complex_t:
+	  return pmt::pmt_is_c32vector(v);
+	default:
+	  throw std::runtime_error("bad PDU type");
+	}
+      }
+
+      pmt::pmt_t
+      make_vector(vector_type type, const uint8_t *buf, size_t items)
+      {
+	switch(type) {
+	case byte_t:
+	  return pmt::pmt_init_u8vector(items, buf);
+	case float_t:
+	  return pmt::pmt_init_f32vector(items, (const float *)buf);
+	case complex_t:
+	  return pmt::pmt_init_c32vector(items, (const gr_complex *)buf);
+	default:
+	  throw std::runtime_error("bad PDU type");
+	}
+      }
+
+      vector_type
+      type_from_pmt(pmt::pmt_t vector)
+      {
+	if(pmt_is_u8vector(vector))
+	  return byte_t;
+	if(pmt_is_f32vector(vector))
+	  return float_t;
+	if(pmt_is_c32vector(vector))
+	  return complex_t;
+	throw std::runtime_error("bad PDU type");
+      }
+
+    } /* namespace pdu */
+  } /* namespace blocks */
+} /* namespace gr */