diff options
author | Camilo Solano <solano@ti.rwth-aachen.de> | 2014-05-13 12:53:23 +0200 |
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committer | Camilo Solano <solano@ti.rwth-aachen.de> | 2014-05-13 12:53:23 +0200 |
commit | 9970854f8938fcc015608dc163442467427cb9a6 (patch) | |
tree | 31390248ae3252291b15fcb1a3a2819eaa5ce2c6 /gr-zeromq/lib/sub_source_impl.cc | |
parent | 746737b4a9fc74bf4e86debdf35e67b8238da8b9 (diff) |
Add sub_source block and fix pub_sink
Diffstat (limited to 'gr-zeromq/lib/sub_source_impl.cc')
-rw-r--r-- | gr-zeromq/lib/sub_source_impl.cc | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/gr-zeromq/lib/sub_source_impl.cc b/gr-zeromq/lib/sub_source_impl.cc new file mode 100644 index 0000000000..38ddc78e59 --- /dev/null +++ b/gr-zeromq/lib/sub_source_impl.cc @@ -0,0 +1,102 @@ +/* -*- 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 "sub_source_impl.h" + +namespace gr { + namespace zeromq { + + sub_source::sptr + sub_source::make(size_t itemsize, size_t vlen, char *address, int timeout) + { + return gnuradio::get_initial_sptr + (new sub_source_impl(itemsize, vlen, address, timeout)); + } + + sub_source_impl::sub_source_impl(size_t itemsize, size_t vlen, char *address, int timeout) + : gr::sync_block("sub_source", + gr::io_signature::make(0, 0, 0), + gr::io_signature::make(1, 1, itemsize * vlen)), + 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_SUB); + //int time = 0; + d_socket->setsockopt(ZMQ_SUBSCRIBE, "", 0); + d_socket->connect (address); + } + + /* + * Our virtual destructor. + */ + sub_source_impl::~sub_source_impl() + { + d_socket->close(); + delete d_socket; + delete d_context; + } + + int + sub_source_impl::work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + char *out = (char*)output_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 + zmq::message_t msg; + d_socket->recv(&msg); + // Copy to ouput buffer and return + if (msg.size() >= d_itemsize*d_vlen*noutput_items) { + memcpy(out, (void *)msg.data(), d_itemsize*d_vlen*noutput_items); + + return noutput_items; + } + else { + memcpy(out, (void *)msg.data(), msg.size()); + + return msg.size()/(d_itemsize*d_vlen); + } + } + else { + return 0; // FIXME: someday when the scheduler does all the poll/selects + } + } + + } /* namespace zeromq */ +} /* namespace gr */ |