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/* -*- c++ -*- */
/*
* Copyright 2013,2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio.
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "sub_source_impl.h"
#include "tag_headers.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace zeromq {
sub_source::sptr sub_source::make(size_t itemsize,
size_t vlen,
char* address,
int timeout,
bool pass_tags,
int hwm,
const std::string& key)
{
return gnuradio::make_block_sptr<sub_source_impl>(
itemsize, vlen, address, timeout, pass_tags, hwm, key);
}
sub_source_impl::sub_source_impl(size_t itemsize,
size_t vlen,
char* address,
int timeout,
bool pass_tags,
int hwm,
const std::string& key)
: gr::sync_block("sub_source",
gr::io_signature::make(0, 0, 0),
gr::io_signature::make(1, 1, itemsize * vlen)),
base_source_impl(ZMQ_SUB, itemsize, vlen, address, timeout, pass_tags, hwm, key)
{
/* Subscribe */
d_socket.setsockopt(ZMQ_SUBSCRIBE, key.c_str(), key.size());
}
int sub_source_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
uint8_t* out = (uint8_t*)output_items[0];
bool first = true;
int done = 0;
/* Process as much as we can */
while (1) {
if (has_pending()) {
/* Flush anything pending */
done += flush_pending(
out + (done * d_vsize), noutput_items - done, nitems_written(0) + done);
/* No more space ? */
if (done == noutput_items)
break;
} else {
/* Try to get the next message */
if (!load_message(first))
break; /* No message, we're done for now */
/* Not the first anymore */
first = false;
}
}
return done;
}
} /* namespace zeromq */
} /* namespace gr */
// vim: ts=2 sw=2 expandtab
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