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/* -*- c++ -*- */
/*
* Copyright 2007-2010,2013 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.
*/
#ifndef INCLUDED_GR_UDP_SOURCE_IMPL_H
#define INCLUDED_GR_UDP_SOURCE_IMPL_H
#include <gnuradio/blocks/udp_source.h>
#include <boost/asio.hpp>
#include <boost/format.hpp>
#include <gnuradio/thread/thread.h>
namespace gr {
namespace blocks {
class udp_source_impl : public udp_source
{
private:
size_t d_itemsize;
int d_payload_size; // maximum transmission unit (packet length)
bool d_eof; // look for an EOF signal
bool d_connected; // are we connected?
char *d_rxbuf; // get UDP buffer items
char *d_residbuf; // hold buffer between calls
ssize_t d_residual; // hold information about number of bytes stored in residbuf
ssize_t d_sent; // track how much of d_residbuf we've outputted
size_t d_offset; // point to residbuf location offset
static const int BUF_SIZE_PAYLOADS; //!< The d_residbuf size in multiples of d_payload_size
std::string d_host;
unsigned short d_port;
boost::asio::ip::udp::socket *d_socket;
boost::asio::ip::udp::endpoint d_endpoint;
boost::asio::ip::udp::endpoint d_endpoint_rcvd;
boost::asio::io_service d_io_service;
gr::thread::condition_variable d_cond_wait;
gr::thread::mutex d_udp_mutex;
gr::thread::thread d_udp_thread;
void start_receive();
void handle_read(const boost::system::error_code& error,
size_t bytes_transferred);
void run_io_service() { d_io_service.run(); }
public:
udp_source_impl(size_t itemsize,
const std::string &host, int port,
int payload_size, bool eof);
~udp_source_impl();
void connect(const std::string &host, int port);
void disconnect();
int payload_size() { return d_payload_size; }
int get_port();
int work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items);
};
} /* namespace blocks */
} /* namespace gr */
#endif /* INCLUDED_GR_UDP_SOURCE_H */
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