add packet_pad, string_to_blob, pdu_to_blob and periodic_msg_source

lib/pdu_to_blob_impl.cc

@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2013 Bastian Bloessl <bloessl@ccs-labs.org>
+ *
+ * This program 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 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include <ccs/pdu_to_blob.h>
+
+#include <gnuradio/io_signature.h>
+#include <string>
+
+using namespace gr::ccs;
+
+class pdu_to_blob_impl : public pdu_to_blob {
+
+public:
+
+pdu_to_blob_impl() :
+		block("pdu_to_blob",
+				gr::io_signature::make(0, 0, 0),
+				gr::io_signature::make(0, 0, 0)) {
+
+	message_port_register_out(pmt::mp("out"));
+
+	message_port_register_in(pmt::mp("in"));
+	set_msg_handler(pmt::mp("in"), boost::bind(&pdu_to_blob_impl::make_blob, this, _1));
+}
+
+~pdu_to_blob_impl() {
+
+}
+
+void make_blob(pmt::pmt_t msg) {
+
+	assert(pmt::is_pair(msg));
+
+	pmt::pmt_t vec = pmt::cdr(msg);
+	assert(pmt::is_u8vector(vec));
+
+	size_t len;
+
+	const void *data = pmt::uniform_vector_elements(vec, len);
+	assert(len < 4000);
+
+	std::memcpy(buf, data, len);
+
+	pmt::pmt_t blob = pmt::make_blob(buf, len);
+
+	message_port_pub(pmt::mp("out"), blob);
+}
+
+private:
+	char buf[4000];
+
+};
+
+pdu_to_blob::sptr
+pdu_to_blob::make() {
+	return gnuradio::get_initial_sptr(new pdu_to_blob_impl());
+}