diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-03-06 09:54:14 -0500 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-03-06 09:54:14 -0500 |
| commit | 520626bcc203a15ec22ed7351204662a33a17ef5 (patch) | |
| tree | bcbf90619e9ad3971f74c1990ee87305ce2940fc /gr-blocks/lib/message_sink_impl.cc | |
| parent | 53ff88a6d6721aa7d31e70bf74511e1138fa833e (diff) | |
blocks: moving message blocks to gr-blocks.
message_burst_source, message_source, message_sink, message_debug, message_strobe.
Diffstat (limited to 'gr-blocks/lib/message_sink_impl.cc')
| -rw-r--r-- | gr-blocks/lib/message_sink_impl.cc | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/gr-blocks/lib/message_sink_impl.cc b/gr-blocks/lib/message_sink_impl.cc new file mode 100644 index 0000000000..a8dbfb4c71 --- /dev/null +++ b/gr-blocks/lib/message_sink_impl.cc @@ -0,0 +1,83 @@ +/* -*- c++ -*- */ +/* + * Copyright 2005,2010,2013 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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "message_sink_impl.h" +#include <gr_io_signature.h> +#include <cstdio> +#include <errno.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <fcntl.h> +#include <stdexcept> +#include <string.h> + +namespace gr { + namespace blocks { + + message_sink::sptr + message_sink::make(size_t itemsize, gr_msg_queue_sptr msgq, bool dont_block) + { + return gnuradio::get_initial_sptr + (new message_sink_impl(itemsize, msgq, dont_block)); + } + + message_sink_impl::message_sink_impl(size_t itemsize, gr_msg_queue_sptr msgq, bool dont_block) + : gr_sync_block("message_sink", + gr_make_io_signature(1, 1, itemsize), + gr_make_io_signature(0, 0, 0)), + d_itemsize(itemsize), d_msgq(msgq), d_dont_block(dont_block) + { + } + + message_sink_impl::~message_sink_impl() + { + } + + int + message_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]; + + // if we'd block, drop the data on the floor and say everything is OK + if(d_dont_block && d_msgq->full_p()) + return noutput_items; + + // build a message to hold whatever we've got + gr_message_sptr msg = gr_make_message(0, // msg type + d_itemsize, // arg1 for other end + noutput_items, // arg2 for other end (redundant) + noutput_items * d_itemsize); // len of msg + memcpy(msg->msg(), in, noutput_items * d_itemsize); + + d_msgq->handle(msg); // send it + + return noutput_items; + } + + } /* namespace blocks */ +} /* namespace gr */ |