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-rw-r--r--gr-uhd/lib/gr_uhd_amsg_source.cc88
1 files changed, 88 insertions, 0 deletions
diff --git a/gr-uhd/lib/gr_uhd_amsg_source.cc b/gr-uhd/lib/gr_uhd_amsg_source.cc
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+++ b/gr-uhd/lib/gr_uhd_amsg_source.cc
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+/*
+ * Copyright 2011 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.
+ */
+
+#include <gr_uhd_amsg_source.h>
+#include <boost/bind.hpp>
+#include <gruel/thread.h>
+
+/***********************************************************************
+ * UHD Asynchronous Message Source Impl
+ **********************************************************************/
+class uhd_amsg_source_impl : public uhd_amsg_source{
+public:
+ uhd_amsg_source_impl(
+ const uhd::device_addr_t &device_addr,
+ gr_msg_queue_sptr msgq
+ ):
+ _msgq(msgq), _running(true)
+ {
+ _dev = uhd::usrp::multi_usrp::make(device_addr);
+ _amsg_thread =
+ gruel::thread(boost::bind(&uhd_amsg_source_impl::recv_loop, this));
+ }
+
+ ~uhd_amsg_source_impl()
+ {
+ _running = false;
+ _amsg_thread.join();
+ }
+
+ void recv_loop()
+ {
+ gr_message_sptr msg;
+ uhd::async_metadata_t *md;
+
+ while (_running) {
+ msg = gr_make_message(0, 0.0, 0.0, sizeof(uhd::async_metadata_t));
+ md = (uhd::async_metadata_t *) msg->msg();
+
+ while (!_dev->get_device()->recv_async_msg(*md, 0.1)) {
+ if (!_running)
+ return;
+ }
+
+ post(msg);
+ }
+ }
+
+ void post(gr_message_sptr msg)
+ {
+ _msgq->insert_tail(msg);
+ }
+
+protected:
+ uhd::usrp::multi_usrp::sptr _dev;
+ gruel::thread _amsg_thread;
+ gr_msg_queue_sptr _msgq;
+ bool _running;
+};
+
+/***********************************************************************
+ * Make UHD Asynchronous Message Source
+ **********************************************************************/
+boost::shared_ptr<uhd_amsg_source> uhd_make_amsg_source(
+ const uhd::device_addr_t &device_addr,
+ gr_msg_queue_sptr msgq
+){
+ return boost::shared_ptr<uhd_amsg_source>(
+ new uhd_amsg_source_impl(device_addr, msgq)
+ );
+}