95 lines
2.4 KiB
C++
95 lines
2.4 KiB
C++
/* -*- C++ -*- */
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/*
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* Copyright 2008 Steve Glass
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*
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* This file is part of OP25.
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*
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* OP25 is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3, or (at your option)
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* any later version.
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*
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* OP25 is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* 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 OP25; see the file COPYING. If not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Boston, MA
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* 02110-1301, USA.
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*/
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#ifndef INCLUDED_SNAPSHOT_DU_HANDLER_H
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#define INCLUDED_SNAPSHOT_DU_HANDLER_H
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#include <data_unit_handler.h>
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#include <gr_msg_queue.h>
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#include <boost/noncopyable.hpp>
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/**
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* snapshot_du_handler. Writes traffic snapshots to a msg_queue based
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* on the HDU frame contents. The format used is that of a pickled
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* python dictionary allowing the other end of the queue to pick only
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* those fields of interest and ignore the rest.
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*/
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class snapshot_du_handler : public data_unit_handler
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{
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public:
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/**
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* snapshot_du_handler constructor.
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*
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* \param next The next data_unit_handler in the chain.
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* \param msgq A non-null msg_queue_sptr to the msg_queue to use.
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*/
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snapshot_du_handler(data_unit_handler_sptr next);
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/**
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* snapshot_du_handler virtual destructor.
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*/
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virtual ~snapshot_du_handler();
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/**
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* Handle a received P25 frame.
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*
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* \param du A non-null data_unit_sptr to handle.
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*/
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virtual void handle(data_unit_sptr du);
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/**
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* Accessor for the msgq attribute. Returns a pointer to the msgq
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* if it exists.
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*
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* \return A (possibly NULL) gr_msg_queue_sptr pointing to the message queue.
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*/
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gr_msg_queue_sptr get_msgq() const;
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/**
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* Accessor for the msgq attribute. Sets the msgq to point to the
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* provided message queue object.
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*
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* \return A (possibly NULL) gr_msg_queue_sptr pointing to the message queue.
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*/
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void set_msgq(gr_msg_queue_sptr msgq);
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private:
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/**
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* Count of the data units seen so far.
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*/
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uint32_t d_data_units;
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/**
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* The msg_queue to which decoded frames are written.
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*/
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gr_msg_queue_sptr d_msgq;
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};
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#endif /* INCLUDED_SNAPSHOT_DU_HANDLER_H */
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