adaptive-receiver.cc
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- /* -*- Mode:C++; c-basic-offset:8; tab-width:8; indent-tabs-mode:t -*-
- *
- * Copyright (c) Xerox Corporation 1997. All rights reserved.
- *
- * This program 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 2 of the License, or (at your
- * option) any later version.
- *
- * This program 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 St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linking this file statically or dynamically with other modules is making
- * a combined work based on this file. Thus, the terms and conditions of
- * the GNU General Public License cover the whole combination.
- *
- * In addition, as a special exception, the copyright holders of this file
- * give you permission to combine this file with free software programs or
- * libraries that are released under the GNU LGPL and with code included in
- * the standard release of ns-2 under the Apache 2.0 license or under
- * otherwise-compatible licenses with advertising requirements (or modified
- * versions of such code, with unchanged license). You may copy and
- * distribute such a system following the terms of the GNU GPL for this
- * file and the licenses of the other code concerned, provided that you
- * include the source code of that other code when and as the GNU GPL
- * requires distribution of source code.
- *
- * Note that people who make modified versions of this file are not
- * obligated to grant this special exception for their modified versions;
- * it is their choice whether to do so. The GNU General Public License
- * gives permission to release a modified version without this exception;
- * this exception also makes it possible to release a modified version
- * which carries forward this exception.
- */
- #ifndef lint
- static const char rcsid[] =
- "@(#) $Header: /cvsroot/nsnam/ns-2/adc/adaptive-receiver.cc,v 1.8 2005/08/26 05:05:27 tomh Exp $";
- #endif
- #include "config.h"
- #include "agent.h"
- #include "tclcl.h"
- #include "packet.h"
- #include "ip.h"
- #include "rtp.h"
- #include "adaptive-receiver.h"
- #include <math.h>
- #define myabs(r) (r<0)?-r:r
- AdaptiveRcvr::AdaptiveRcvr() : Agent(PT_NTYPE)
- {
- //bind("npkts_",&npkts_);
- //bind("ndelay_",&ndelay_);
- //bind("nvar_",&nvar_);
- }
- void AdaptiveRcvr::recv(Packet *pkt,Handler*)
- {
- int delay;
- int seq_no;
- hdr_cmn* ch= hdr_cmn::access(pkt);
- hdr_rtp *rh = hdr_rtp::access(pkt);
-
- seq_no= rh->seqno();
- register u_int32_t send_time = (int)ch->timestamp();
-
- u_int32_t local_time= (u_int32_t)(Scheduler::instance().clock() * SAMPLERATE);
- delay=adapt(pkt,local_time);
- Tcl::instance().evalf("%s print-delay-stats %f %f %f",name(),send_time/SAMPLERATE,local_time/SAMPLERATE,(local_time+delay)/SAMPLERATE);
- Packet::free(pkt);
- }