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/* -*- c++ -*- */
/*
* Copyright 2005,2006,2012 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.
*/
#ifndef INCLUDED_GR_FRAMER_SINK_1_H
#define INCLUDED_GR_FRAMER_SINK_1_H
#include <digital/api.h>
#include <gr_sync_block.h>
#include <gr_msg_queue.h>
namespace gr {
namespace digital {
/*!
* \brief Given a stream of bits and access_code flags, assemble packets.
* \ingroup sink_blk
*
* input: stream of bytes from digital_correlate_access_code_bb
* output: none. Pushes assembled packet into target queue
*
* The framer expects a fixed length header of 2 16-bit shorts
* containing the payload length, followed by the payload. If the
* 2 16-bit shorts are not identical, this packet is
* ignored. Better algs are welcome.
*
* The input data consists of bytes that have two bits used. Bit
* 0, the LSB, contains the data bit. Bit 1 if set, indicates that
* the corresponding bit is the the first bit of the packet. That
* is, this bit is the first one after the access code.
*/
class DIGITAL_API framer_sink_1 : virtual public gr_sync_block
{
public:
// gr::digital::framer_sink_1::sptr
typedef boost::shared_ptr<framer_sink_1> sptr;
/*!
* Make a framer_sink_1 block.
*
* \param target_queue The message queue where frames go.
*/
static sptr make(gr_msg_queue_sptr target_queue);
};
} /* namespace digital */
} /* namespace gr */
#endif /* INCLUDED_GR_FRAMER_SINK_1_H */
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