00001 /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*- */ 00002 /* 00003 * Copyright (c) 1997 Regents of the University of California. 00004 * All rights reserved. 00005 * 00006 * Redistribution and use in source and binary forms, with or without 00007 * modification, are permitted provided that the following conditions 00008 * are met: 00009 * 1. Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 2. Redistributions in binary form must reproduce the above copyright 00012 * notice, this list of conditions and the following disclaimer in the 00013 * documentation and/or other materials provided with the distribution. 00014 * 3. All advertising materials mentioning features or use of this software 00015 * must display the following acknowledgement: 00016 * This product includes software developed by the Daedalus Research 00017 * Group at the University of California Berkeley. 00018 * 4. Neither the name of the University nor of the Laboratory may be used 00019 * to endorse or promote products derived from this software without 00020 * specific prior written permission. 00021 * 00022 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00023 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00026 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00027 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00028 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00029 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00030 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00031 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00032 * SUCH DAMAGE. 00033 * 00034 * Contributed by the Daedalus Research Group, UC Berkeley 00035 * (http://daedalus.cs.berkeley.edu) 00036 * 00037 * @(#) $Header: /cvsroot/nsnam/ns-2/queue/fec.h,v 1.1 2001/03/07 18:30:02 jahn Exp $ (UCB) 00038 */ 00039 00040 #ifndef ns_fecmodel_h 00041 #define ns_fecmodel_h 00042 00043 #include "bi-connector.h" 00044 #include "ranvar.h" 00045 #include "packet.h" 00046 00047 /* 00048 * Basic object for error models. This can be used unchanged by error 00049 * models that are characterized by a single parameter, the rate of errors 00050 * (or equivalently, the mean duration/spacing between errors). Currently, 00051 * this includes the uniform and exponentially-distributed models. 00052 */ 00053 class FECModel : public BiConnector { 00054 public: 00055 FECModel(); 00056 virtual void recv(Packet*, Handler*); 00057 protected: 00058 virtual int command(int argc, const char*const* argv); 00059 void addfec(Packet *p); 00060 void subfec(Packet *p); 00061 int firstTime_; // to not corrupt first packet in byte model 00062 int FECstrength_; // indicate how many corrupted bits are corrected 00063 int FECbyte_; 00064 int debug_; 00065 }; 00066 #endif 00067
1.7.1