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/*
* Copyright 2011-2012 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.
*/
#include <gr_uhd_amsg_source.h>
#include <boost/bind.hpp>
#include <gruel/thread.h>
#include "gr_uhd_common.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;
};
uhd::async_metadata_t uhd_amsg_source::msg_to_async_metadata_t(const gr_message_sptr msg)
{
return *(uhd::async_metadata_t *)msg->msg();
}
/***********************************************************************
* 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
){
gr_uhd_check_abi();
return boost::shared_ptr<uhd_amsg_source>(
new uhd_amsg_source_impl(device_addr, msgq)
);
}
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