Bastian Bloessl
76 lines
2.9 KiB
C++
76 lines
2.9 KiB
C++
/*
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* Copyright (C) 2013 Bastian Bloessl <bloessl@ccs-labs.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <boost/format.hpp>
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#include <gnuradio/io_signature.h>
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#include "packet_headergenerator_impl.h"
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using namespace gr::ieee802_11;
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packet_headergenerator::sptr packet_headergenerator::make(
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const digital::packet_header_default::sptr &header_formatter,
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const std::string &len_tag_key) {
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return gnuradio::get_initial_sptr (new packet_headergenerator_impl(header_formatter, len_tag_key));
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}
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packet_headergenerator::sptr packet_headergenerator::make(
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long header_len,
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const std::string &len_tag_key) {
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const digital::packet_header_default::sptr header_formatter(
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new digital::packet_header_default(header_len, len_tag_key));
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return gnuradio::get_initial_sptr (new packet_headergenerator_impl(header_formatter, len_tag_key));
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}
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packet_headergenerator_impl::packet_headergenerator_impl(
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const gr::digital::packet_header_default::sptr &header_formatter,
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const std::string &len_tag_key
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)
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: tagged_stream_block("packet_headergenerator_impl",
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io_signature::make(1, 1, sizeof (char)),
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io_signature::make(1, 1, sizeof (char)),
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len_tag_key),
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d_formatter(header_formatter)
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{
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set_output_multiple(d_formatter->header_len());
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// This is the worst case rate, because we don't know the true value, of course
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set_relative_rate(d_formatter->header_len());
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set_tag_propagation_policy(TPP_DONT);
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}
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packet_headergenerator_impl::~packet_headergenerator_impl()
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{
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}
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int
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packet_headergenerator_impl::work (int noutput_items,
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gr_vector_int &ninput_items,
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gr_vector_const_void_star &input_items,
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gr_vector_void_star &output_items)
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{
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unsigned char *out = (unsigned char *) output_items[0];
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std::vector<tag_t> all_tags;
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get_tags_in_range(all_tags, 0, nitems_read(0), nitems_read(0) + ninput_items[0]);
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if (!d_formatter->header_formatter(ninput_items[0], out, all_tags)) {
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GR_LOG_FATAL(d_logger, boost::format("header_formatter() returned false (this shouldn't happen). Offending header started at %1%") % nitems_read(0));
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throw std::runtime_error("header formatter returned false.");
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}
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return d_formatter->header_len();
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}
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