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/* -*- c++ -*- */
/*
* Copyright 2014 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.
*/
#ifndef INCLUDED_DIGITAL_HDLC_FRAMER_PB_H
#define INCLUDED_DIGITAL_HDLC_FRAMER_PB_H
#include <gnuradio/digital/api.h>
#include <gnuradio/sync_block.h>
namespace gr {
namespace digital {
/*!
* \brief HDLC framer which takes in PMT binary blobs and outputs HDLC
* frames as unpacked bits, with CRC and bit stuffing added. The first sample
* of the frame is tagged with the tag frame_tag_name and includes a
* length field for tagged_stream use.
*
* This block outputs one whole frame at a time; if there is not enough
* output buffer space to fit a frame, it is pushed onto a queue. As a result
* flowgraphs which only run for a finite number of samples may not receive
* all frames in the queue, due to the scheduler's granularity. For
* flowgraphs that stream continuously (anything using a USRP) this should
* not be an issue.
*
* \ingroup pkt_operators_blk
*
*/
class DIGITAL_API hdlc_framer_pb : virtual public gr::sync_block
{
public:
typedef boost::shared_ptr<hdlc_framer_pb> sptr;
/*!
* \brief Return a shared_ptr to a new instance of digital::hdlc_framer.
*
* \param frame_tag_name: The tag to add to the first sample of each frame.
*/
static sptr make(const std::string frame_tag_name);
};
} // namespace digital
} // namespace gr
#endif /* INCLUDED_DIGITAL_HDLC_FRAMER_PB_H */
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