From 520626bcc203a15ec22ed7351204662a33a17ef5 Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Wed, 6 Mar 2013 09:54:14 -0500
Subject: blocks: moving message blocks to gr-blocks.
message_burst_source, message_source, message_sink, message_debug, message_strobe.
---
gr-blocks/lib/message_sink_impl.cc | 83 ++++++++++++++++++++++++++++++++++++++
1 file changed, 83 insertions(+)
create mode 100644 gr-blocks/lib/message_sink_impl.cc
(limited to 'gr-blocks/lib/message_sink_impl.cc')
diff --git a/gr-blocks/lib/message_sink_impl.cc b/gr-blocks/lib/message_sink_impl.cc
new file mode 100644
index 0000000000..a8dbfb4c71
--- /dev/null
+++ b/gr-blocks/lib/message_sink_impl.cc
@@ -0,0 +1,83 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2005,2010,2013 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 "message_sink_impl.h"
+#include <gr_io_signature.h>
+#include <cstdio>
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdexcept>
+#include <string.h>
+
+namespace gr {
+ namespace blocks {
+
+ message_sink::sptr
+ message_sink::make(size_t itemsize, gr_msg_queue_sptr msgq, bool dont_block)
+ {
+ return gnuradio::get_initial_sptr
+ (new message_sink_impl(itemsize, msgq, dont_block));
+ }
+
+ message_sink_impl::message_sink_impl(size_t itemsize, gr_msg_queue_sptr msgq, bool dont_block)
+ : gr_sync_block("message_sink",
+ gr_make_io_signature(1, 1, itemsize),
+ gr_make_io_signature(0, 0, 0)),
+ d_itemsize(itemsize), d_msgq(msgq), d_dont_block(dont_block)
+ {
+ }
+
+ message_sink_impl::~message_sink_impl()
+ {
+ }
+
+ int
+ message_sink_impl::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+ {
+ const char *in = (const char*)input_items[0];
+
+ // if we'd block, drop the data on the floor and say everything is OK
+ if(d_dont_block && d_msgq->full_p())
+ return noutput_items;
+
+ // build a message to hold whatever we've got
+ gr_message_sptr msg = gr_make_message(0, // msg type
+ d_itemsize, // arg1 for other end
+ noutput_items, // arg2 for other end (redundant)
+ noutput_items * d_itemsize); // len of msg
+ memcpy(msg->msg(), in, noutput_items * d_itemsize);
+
+ d_msgq->handle(msg); // send it
+
+ return noutput_items;
+ }
+
+ } /* namespace blocks */
+} /* namespace gr */
--
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