README change

1 files changed, 39 insertions, 0 deletions

diff --git a/gnuradio-core/src/lib/io/gr_pdu.h b/gnuradio-core/src/lib/io/gr_pdu.h
new file mode 100644
index 000000000..a5ae87db7
--- /dev/null
+++ b/gnuradio-core/src/lib/io/gr_pdu.h
@@ -0,0 +1,39 @@
+/* -*- 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.
+ */
+
+#ifndef GR_PDU_H
+#define GR_PDU_H
+
+#include <gr_complex.h>
+#include <gruel/pmt.h>
+
+#define pdu_port_id     pmt::mp("pdus")
+#define pdu_length_tag  pmt::mp("pdu_length")
+
+enum gr_pdu_vector_type { pdu_byte, pdu_float, pdu_complex };
+
+size_t gr_pdu_itemsize(gr_pdu_vector_type type);
+bool gr_pdu_type_matches(gr_pdu_vector_type type, pmt::pmt_t v);
+pmt::pmt_t gr_pdu_make_vector(gr_pdu_vector_type type, const uint8_t* buf, size_t items);
+gr_pdu_vector_type type_from_pmt(pmt::pmt_t vector);
+
+#endif