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/* -*- c++ -*- */
/* Copyright 2012 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_io_signature.h>
#include "packet_headergenerator_bb_impl.h"
namespace gr {
namespace digital {
packet_headergenerator_bb::sptr
packet_headergenerator_bb::make(const packet_header_default::sptr &header_formatter)
{
return gnuradio::get_initial_sptr (new packet_headergenerator_bb_impl(header_formatter));
}
packet_headergenerator_bb::sptr
packet_headergenerator_bb::make(
long header_len,
const std::string &len_tag_key
)
{
const packet_header_default::sptr header_formatter(
new packet_header_default(header_len, len_tag_key)
);
return gnuradio::get_initial_sptr (new packet_headergenerator_bb_impl(header_formatter));
}
packet_headergenerator_bb_impl::packet_headergenerator_bb_impl(
const gr::digital::packet_header_default::sptr &header_formatter
)
: gr_tagged_stream_block("packet_headergenerator_bb_impl",
gr_make_io_signature(1, 1, sizeof (char)),
gr_make_io_signature(1, 1, sizeof (char)),
pmt::pmt_symbol_to_string(header_formatter->len_tag_key())),
d_formatter(header_formatter),
d_input_size(1),
d_header_len(header_formatter->header_len()),
d_len_tag_value(pmt::pmt_from_long(d_header_len))
{
set_output_multiple(d_header_len);
// This is the worst case rate, because we don't know the true value, of course
set_relative_rate(d_header_len);
set_tag_propagation_policy(TPP_DONT);
}
packet_headergenerator_bb_impl::~packet_headergenerator_bb_impl()
{
}
int
packet_headergenerator_bb_impl::work (int noutput_items,
gr_vector_int &ninput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
unsigned char *out = (unsigned char *) output_items[0];
if (!d_formatter->header_formatter(ninput_items[0], out)) {
throw std::runtime_error("header formatter returned false.");
}
return d_header_len;
}
} /* namespace digital */
} /* namespace gr */
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