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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 "pub_sink_impl.h"
#include <sstream>
#include <cstring>
namespace gr {
namespace zeromq {
pub_sink::sptr
pub_sink::make(size_t itemsize, size_t vlen, char *address, int timeout)
{
return gnuradio::get_initial_sptr
(new pub_sink_impl(itemsize, vlen, address, timeout));
}
pub_sink_impl::pub_sink_impl(size_t itemsize, size_t vlen, char *address, int timeout)
: gr::sync_block("pub_sink",
gr::io_signature::make(1, 1, itemsize * vlen),
gr::io_signature::make(0, 0, 0)),
d_itemsize(itemsize), d_vlen(vlen), d_timeout(timeout)
{
int major, minor, patch;
zmq::version (&major, &minor, &patch);
if (major < 3) {
d_timeout = timeout*1000;
}
d_context = new zmq::context_t(1);
d_socket = new zmq::socket_t(*d_context, ZMQ_PUB);
int time = 0;
d_socket->setsockopt(ZMQ_LINGER, &time, sizeof(time));
d_socket->bind(address);
}
pub_sink_impl::~pub_sink_impl()
{
d_socket->close();
delete d_socket;
delete d_context;
}
int
pub_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];
// encode the current offset, # tags, and tags into header
std::vector<gr::tag_t> tags;
get_tags_in_range(tags, 0, nitems_read(0), nitems_read(0)+noutput_items);
std::stringstream ss;
size_t ntags = tags.size();
ss.write( reinterpret_cast< const char* >( nitems_read(0) ), sizeof(uint64_t) ); // offset
ss.write( reinterpret_cast< const char* >( &ntags ), sizeof(size_t) ); // num tags
std::stringbuf sb("");
for(size_t i=0; i<tags.size(); i++){
ss.write( reinterpret_cast< const char* >( &tags[i].offset ), sizeof(uint64_t) ); // offset
sb.str("");
pmt::serialize( tags[i].key, sb ); // key
pmt::serialize( tags[i].value, sb ); // value
ss.write( sb.str().c_str() , sb.str().length() ); // offset
}
size_t headlen( ss.gcount() );
// create message copy and send
zmq::message_t msg(headlen + d_itemsize*d_vlen*noutput_items);
memcpy((void*) msg.data(), ss.str().c_str(), ss.str().length() );
memcpy((uint8_t *)msg.data() + headlen, in, d_itemsize*d_vlen*noutput_items);
d_socket->send(msg);
return noutput_items;
}
} /* namespace zeromq */
} /* namespace gr */
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