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/* -*- c++ -*- */
/*
* Copyright 2015-2016 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 <volk/volk.h>
#include <gnuradio/io_signature.h>
#include "protocol_formatter_async_impl.h"
#include <stdio.h>
namespace gr {
namespace digital {
protocol_formatter_async::sptr
protocol_formatter_async::make(const header_format_base::sptr &format)
{
return gnuradio::get_initial_sptr
(new protocol_formatter_async_impl(format));
}
protocol_formatter_async_impl::protocol_formatter_async_impl(const header_format_base::sptr &format)
: block("protocol_formatter_async",
io_signature::make(0, 0, 0),
io_signature::make(0, 0, 0))
{
d_format = format;
d_in_port = pmt::mp("in");
d_hdr_port = pmt::mp("header");
d_pld_port = pmt::mp("payload");
message_port_register_in(d_in_port);
message_port_register_out(d_hdr_port);
message_port_register_out(d_pld_port);
set_msg_handler(d_in_port,
boost::bind(&protocol_formatter_async_impl::append, this ,_1) );
}
protocol_formatter_async_impl::~protocol_formatter_async_impl()
{
}
void
protocol_formatter_async_impl::append(pmt::pmt_t msg)
{
// extract input pdu
pmt::pmt_t meta(pmt::car(msg));
pmt::pmt_t input(pmt::cdr(msg));
pmt::pmt_t header, output;
size_t pkt_len = 0;
const uint8_t* bytes_in = pmt::u8vector_elements(input, pkt_len);
// Pad the payload with 0's
uint8_t* payload = (uint8_t*)volk_malloc(pkt_len*sizeof(uint8_t),
volk_get_alignment());
memcpy(payload, bytes_in, pkt_len*sizeof(uint8_t));
output = pmt::init_u8vector(pkt_len, payload);
volk_free(payload);
// Build the header from the input, metadata, and format
d_format->format(pkt_len, bytes_in, header, meta);
// Package and publish
pmt::pmt_t hdr_pdu = pmt::cons(meta, header);
pmt::pmt_t pld_pdu = pmt::cons(meta, output);
message_port_pub(d_hdr_port, hdr_pdu);
message_port_pub(d_pld_port, pld_pdu);
}
} /* namespace digital */
} /* namespace gr */
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