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/* -*- c++ -*- */
/*
* Copyright 2009 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef INCLUDED_MISSING_PKT_CHECKER_H
#define INCLUDED_MISSING_PKT_CHECKER_H
#include <vrt/expanded_header.h>
#include <stdint.h>
/*!
* \brief Check for missing packets
*/
class missing_pkt_checker
{
// FIXME assumes we're inspecting only a single stream
bool d_resync;
uint64_t d_npackets; //< total number of packets
int d_last_pkt_cnt; //< the last pkt_cnt we saw
uint64_t d_nwrong_pkt_cnt; //< number of incorrect pkt_cnt
uint64_t d_nmissing_pkt_est; //< estimate of total number of missing pkts
public:
missing_pkt_checker()
: d_resync(true), d_npackets(0), d_last_pkt_cnt(0xf), d_nwrong_pkt_cnt(0),
d_nmissing_pkt_est(0) {}
/*!
* \brief check header pkt_cnt and return 0 if OK, else estimate of number of missing packets.
*/
int check(const vrt::expanded_header *hdr);
void resync() { d_resync = true; }
uint64_t npackets() const { return d_npackets; }
uint64_t nwrong_pkt_cnt() const { return d_nwrong_pkt_cnt; }
uint64_t nmissing_pkt_est() const { return d_nmissing_pkt_est; }
};
#endif /* INCLUDED_MISSING_PKT_CHECKER_H */
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