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/* -*- c++ -*- */
/*
* Copyright 2013,2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio.
*
* This 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.
*
* This software 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 this software; 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 <gnuradio/io_signature.h>
#include "rep_sink_impl.h"
namespace gr {
namespace zeromq {
rep_sink::sptr
rep_sink::make(size_t itemsize, size_t vlen, char *address, float timeout, bool blocking)
{
return gnuradio::get_initial_sptr
(new rep_sink_impl(itemsize, vlen, address, timeout, blocking));
}
rep_sink_impl::rep_sink_impl(size_t itemsize, size_t vlen, char *address, float timeout, bool blocking)
: gr::sync_block("rep_sink",
gr::io_signature::make(1, 1, itemsize * vlen),
gr::io_signature::make(0, 0, 0)),
d_itemsize(itemsize), d_blocking(blocking)
{
d_timeout = timeout >= 0 ? (int)(timeout*1e6) : 0;
d_context = new zmq::context_t(1);
d_socket = new zmq::socket_t(*d_context, ZMQ_REP);
d_socket->bind (address);
}
rep_sink_impl::~rep_sink_impl()
{
delete d_socket;
delete d_context;
}
int
rep_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];
zmq::pollitem_t items[] = { { *d_socket, 0, ZMQ_POLLIN, 0 } };
zmq::poll (&items[0], 1, d_timeout);
// If we got a reply, process
if (items[0].revents & ZMQ_POLLIN) {
// receive data request
zmq::message_t request;
d_socket->recv(&request);
int req_output_items = *(static_cast<int*>(request.data()));
// create message copy and send
if (noutput_items < req_output_items) {
zmq::message_t msg(d_itemsize*noutput_items);
memcpy((void *)msg.data(), in, d_itemsize*noutput_items);
d_socket->send(msg, d_blocking ? 0 : ZMQ_NOBLOCK);
return noutput_items;
}
else {
zmq::message_t msg(d_itemsize*req_output_items);
memcpy((void *)msg.data(), in, d_itemsize*req_output_items);
d_socket->send(msg, d_blocking ? 0 : ZMQ_NOBLOCK);
return req_output_items;
}
}
return 0;
}
} /* namespace zeromq */
} /* namespace gr */
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