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/* -*- c++ -*- */
/*
* Copyright 2005,2010 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 <gr_message_sink.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>
// public constructor that returns a shared_ptr
gr_message_sink_sptr
gr_make_message_sink (size_t itemsize, gr_msg_queue_sptr msgq, bool dont_block)
{
return gnuradio::get_initial_sptr(new gr_message_sink(itemsize, msgq, dont_block));
}
gr_message_sink::gr_message_sink (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)
{
}
gr_message_sink::~gr_message_sink()
{
}
int
gr_message_sink::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;
}
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