udp_sink_impl.h

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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_SINK_IMPL_H
#define INCLUDED_GR_UDP_SINK_IMPL_H

#include <blocks/udp_sink.h>
#include <boost/asio.hpp>

namespace gr {
  namespace blocks {

    class udp_sink_impl : public udp_sink
    {
    private:
      size_t d_itemsize;

      int    d_payload_size;    // maximum transmission unit (packet length)
      bool   d_eof;             // send zero-length packet on disconnect
      bool   d_connected;       // are we connected?
      gruel::mutex  d_mutex;    // protects d_socket and d_connected

      boost::asio::ip::udp::socket *d_socket;          // handle to socket
      boost::asio::ip::udp::endpoint d_endpoint;
      boost::asio::io_service d_io_service;

    public:
      udp_sink_impl(size_t itemsize,
                    const std::string &host, int port,
                    int payload_size, bool eof);
      ~udp_sink_impl();

      int payload_size() { return d_payload_size; }

      void connect(const std::string &host, int port);
      void disconnect();

      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_SINK_IMPL_H */