diff options
Diffstat (limited to 'gr-digital/lib/packet_headergenerator_bb_impl.cc')
| -rw-r--r-- | gr-digital/lib/packet_headergenerator_bb_impl.cc | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/gr-digital/lib/packet_headergenerator_bb_impl.cc b/gr-digital/lib/packet_headergenerator_bb_impl.cc new file mode 100644 index 0000000000..3232858148 --- /dev/null +++ b/gr-digital/lib/packet_headergenerator_bb_impl.cc @@ -0,0 +1,93 @@ +/* -*- 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 <boost/format.hpp> +#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, + const std::string &len_tag_key + ) + { + return gnuradio::get_initial_sptr (new packet_headergenerator_bb_impl(header_formatter, len_tag_key)); + } + + + 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, len_tag_key)); + } + + + packet_headergenerator_bb_impl::packet_headergenerator_bb_impl( + const gr::digital::packet_header_default::sptr &header_formatter, + const std::string &len_tag_key + ) + : gr_tagged_stream_block("packet_headergenerator_bb_impl", + gr_make_io_signature(1, 1, sizeof (char)), + gr_make_io_signature(1, 1, sizeof (char)), + len_tag_key), + d_formatter(header_formatter) + { + set_output_multiple(d_formatter->header_len()); + // This is the worst case rate, because we don't know the true value, of course + set_relative_rate(d_formatter->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)) { + GR_LOG_FATAL(d_logger, boost::format("header_formatter() returned false (this shouldn't happen). Offending header started at %1%") % nitems_read(0)); + throw std::runtime_error("header formatter returned false."); + } + + return d_formatter->header_len(); + } + + } /* namespace digital */ +} /* namespace gr */ + |