code changes
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/*
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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 "wave_llc_impl.h"
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#include <gnuradio/io_signature.h>
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#include <gnuradio/block_detail.h>
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#include <string.h>
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using namespace gr::ieee802_11;
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wave_llc_impl::wave_llc_impl() :
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block("wave_llc",
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gr::io_signature::make(0, 0, 0),
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gr::io_signature::make(0, 0, 0)) {
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message_port_register_out(pmt::mp("out"));
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message_port_register_in(pmt::mp("in"));
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set_msg_handler(pmt::mp("in"), boost::bind(&wave_llc_impl::make_frame, this, _1));
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d_header[0] = 0xaa;
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d_header[1] = 0xaa;
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d_header[2] = 0x03;
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d_header[3] = 0x00;
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d_header[4] = 0x00;
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d_header[5] = 0x00;
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d_header[6] = 0x88;
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d_header[7] = 0xdc;
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}
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void
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wave_llc_impl::make_frame (pmt::pmt_t msg) {
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if(pmt::is_eof_object(msg)) {
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message_port_pub(pmt::mp("out"), pmt::PMT_EOF);
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detail().get()->set_done(true);
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return;
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} else if(pmt::is_pair(msg)) {
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msg = pmt::cdr(msg);
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} else if(pmt::is_blob(msg)) {
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} else {
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throw std::invalid_argument("wave_llc expects PDU or blob input");
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}
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size_t data_len = pmt::blob_length(msg);
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char *buf = reinterpret_cast<char *>(std::malloc(
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sizeof(d_header) + data_len));
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std::memcpy(buf, d_header, sizeof(d_header));
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std::memcpy(buf + sizeof(d_header), pmt::blob_data(msg), data_len);
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pmt::pmt_t llc_msg = pmt::make_blob(buf, sizeof(d_header) + data_len);
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message_port_pub(pmt::mp("out"), llc_msg);
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std::free(buf);
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}
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wave_llc::sptr
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wave_llc::make() {
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return gnuradio::get_initial_sptr(new wave_llc_impl());
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}
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