Code/Resource
Windows Develop
Linux-Unix program
Internet-Socket-Network
Web Server
Browser Client
Ftp Server
Ftp Client
Browser Plugins
Proxy Server
Email Server
Email Client
WEB Mail
Firewall-Security
Telnet Server
Telnet Client
ICQ-IM-Chat
Search Engine
Sniffer Package capture
Remote Control
xml-soap-webservice
P2P
WEB(ASP,PHP,...)
TCP/IP Stack
SNMP
Grid Computing
SilverLight
DNS
Cluster Service
Network Security
Communication-Mobile
Game Program
Editor
Multimedia program
Graph program
Compiler program
Compress-Decompress algrithms
Crypt_Decrypt algrithms
Mathimatics-Numerical algorithms
MultiLanguage
Disk/Storage
Java Develop
assembly language
Applications
Other systems
Database system
Embeded-SCM Develop
FlashMX/Flex
source in ebook
Delphi VCL
OS Develop
MiddleWare
MPI
MacOS develop
LabView
ELanguage
Software/Tools
E-Books
Artical/Document
packetq.cpp
Package: 142_61_thumb_advanced.rar [view]
Upload User: dangjiwu
Upload Date: 2013-07-19
Package Size: 42019k
Code Size: 13k
Category:
Symbian
Development Platform:
Visual C++
- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: packetq.cpp,v 1.3.36.1 2004/07/09 02:04:33 hubbe Exp $
- *
- * Portions Copyright (c) 1995-2004 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file,
- * are subject to the current version of the RealNetworks Public
- * Source License (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the current version of the RealNetworks Community
- * Source License (the "RCSL") available at
- * http://www.helixcommunity.org/content/rcsl, in which case the RCSL
- * will apply. You may also obtain the license terms directly from
- * RealNetworks. You may not use this file except in compliance with
- * the RPSL or, if you have a valid RCSL with RealNetworks applicable
- * to this file, the RCSL. Please see the applicable RPSL or RCSL for
- * the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * Alternatively, the contents of this file may be used under the
- * terms of the GNU General Public License Version 2 or later (the
- * "GPL") in which case the provisions of the GPL are applicable
- * instead of those above. If you wish to allow use of your version of
- * this file only under the terms of the GPL, and not to allow others
- * to use your version of this file under the terms of either the RPSL
- * or RCSL, indicate your decision by deleting the provisions above
- * and replace them with the notice and other provisions required by
- * the GPL. If you do not delete the provisions above, a recipient may
- * use your version of this file under the terms of any one of the
- * RPSL, the RCSL or the GPL.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the
- * portions it created.
- *
- * This file, and the files included with this file, is distributed
- * and made available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY
- * KIND, EITHER EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS
- * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES
- * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET
- * ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxcomm.h"
- #include "ihxpckts.h"
- #include "hxmap.h" // CHXMapLongToObj
- #include "netbyte.h"
- #include "packetq.h"
- #include "hxheap.h"
- #ifdef _DEBUG
- #include "hxtick.h"
- #undef HX_THIS_FILE
- static const char HX_THIS_FILE[] = __FILE__;
- #endif
- /******************************************************************
- * Defines
- */
- #define MAX_GAP_SINCE_TERMINATION 3
- #define MAX_EXPECTED_LOSS_GAP 1000
- /******************************************************************
- * PacketQueue
- *
- */
- PacketQueue::PacketQueue(const UINT32 ulWinSize,
- const UINT16 unProbation,
- const UINT32 ulWinTime,
- const BOOL bUsesRTPPackets)
- : m_ulMinWindowSize(ulWinSize)
- , m_ulMinWindowTime(ulWinTime)
- , m_bUsesRTPPackets(bUsesRTPPackets)
- , m_unCurrent(0)
- , m_bInitial(TRUE)
- , m_bPacketReturned(FALSE)
- , m_unInitProbation(unProbation)
- , m_unProbation(unProbation)
- , m_ulLate(0)
- , m_ulLateSinceTermination(0)
- , m_pBuf(NULL)
- , m_bLastReturnedArrivalSet(FALSE)
- , m_pClassFactory(NULL)
- , m_bIsFlexTimeWindow(FALSE)
- {
- HX_ASSERT(unProbation > 0);
- #ifdef _PKTQ_DEBUG
- static INT32 lCount = 1;
- char cFileName[30]; /* Flawfinder: ignore */
- memset(cFileName, 0, 30);
- wsprintf(cFileName, "c:\temp\trans%d.txt", lCount++);
- m_pLogFile= fopen(cFileName, "wt"); /* Flawfinder: ignore */
- #endif
- }
- PacketQueue::~PacketQueue()
- {
- ReInitVars();
- HX_DELETE(m_pBuf);
- HX_RELEASE(m_pClassFactory);
- #ifdef _PKTQ_DEBUG
- fclose(m_pLogFile);
- #endif
- }
- HX_RESULT
- PacketQueue::Init(IHXCommonClassFactory* pClassFactory)
- {
- if (!pClassFactory)
- {
- HX_ASSERT(!"PacketQueue::Init(hey, classfactory is NULL)");
- return HXR_INVALID_PARAMETER;
- }
- m_pBuf = new CHXMapLongToObj();
- if (!m_pBuf)
- {
- return HXR_OUTOFMEMORY;
- }
- m_pClassFactory = pClassFactory;
- m_pClassFactory->AddRef();
- return HXR_OK;
- }
- void
- PacketQueue::ReInitVars()
- {
- CArrivedPacket* pDeadPacket;
- CHXMapLongToObj::Iterator i;
- for (i = m_pBuf->Begin(); i != m_pBuf->End(); ++i)
- {
- pDeadPacket = (CArrivedPacket*) (*i);
- delete pDeadPacket;
- }
- m_pBuf->RemoveAll();
- m_bInitial = TRUE;
- m_bPacketReturned = FALSE;
- m_bLastReturnedArrivalSet = FALSE;
- // we've already received one pkt.
- m_unProbation = m_unProbation - 1;
- // the same as ones in constractor...
- m_unCurrent = 0;
- m_ulLate = 0;
- m_ulLateSinceTermination = 0;
- }
- UINT16
- PacketQueue::GetPercentDone(void)
- {
- HX_ASSERT(m_pBuf);
- return (UINT16)((m_pBuf->GetCount() * 100) /
- (m_ulMinWindowSize ? m_ulMinWindowSize : 1));
- }
- HX_RESULT
- PacketQueue::AddPacket(UINT16 unSeq,
- IHXPacket* pPacket,
- ULONG32 ulArrivalTime)
- {
- // RTP sort of sanity check
- // Don't add until MIN_SEQUENTIAL sequential pkts are received
- if (m_unProbation)
- {
- void* pVoid = NULL;
- if (m_pBuf->Lookup(unSeq - 1, (void*&) pVoid))
- {
- HX_ASSERT(pVoid);
- // in seq.
- m_unProbation--;
- }
- else
- {
- ReInitVars();
- }
- }
- if (m_bPacketReturned &&
- IsSeqNumGT(m_unCurrent, unSeq))
- {
- // this packet is too late, don't add it
- void* pDummyVoid;
- if (!m_pBuf->Lookup(unSeq, pDummyVoid))
- {
- m_ulLate++;
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "LATE #%u <= #%u at %un", unSeq, m_unCurrent, HX_GET_TICKCOUNT());
- fflush(m_pLogFile);
- }
- #endif
- }
- #ifdef _PKTQ_DEBUG
- else
- {
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "DUP #%u > #%u (%u) at %un", unSeq, m_unCurrent,
- pPacket->GetTime(), HX_GET_TICKCOUNT());
- fflush(m_pLogFile);
- }
- }
- #endif
- return HXR_OK;
- }
- void* pDummyVoid;
- if (!m_pBuf->Lookup(unSeq, pDummyVoid))
- {
- CArrivedPacket* pArrivedPacket = new CArrivedPacket(pPacket,
- ulArrivalTime);
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "ADD #%u > #%u (%u) at %u: %un", unSeq, m_unCurrent,
- pPacket->GetTime(), HX_GET_TICKCOUNT(), m_pBuf->GetCount()+1);
- fflush(m_pLogFile);
- }
- #endif
- if (pArrivedPacket)
- {
- (*m_pBuf)[unSeq] = pArrivedPacket;
- if (m_bInitial)
- {
- m_bInitial = FALSE;
- m_unCurrent = unSeq;
- m_ulLastReturnedArrivalTime = ulArrivalTime;
- m_unLastReturnedArrivalSeq = unSeq;
- m_bLastReturnedArrivalSet = TRUE;
- }
- else if (IsSeqNumGT(m_unCurrent, unSeq))
- {
- m_unCurrent = unSeq;
- }
- return HXR_OK;
- }
- }
- #ifdef _PKTQ_DEBUG
- else
- {
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "DUP #%u > #%u (%u) at %un", unSeq, m_unCurrent,
- pPacket->GetTime(), HX_GET_TICKCOUNT());
- fflush(m_pLogFile);
- }
- }
- #endif
- return HXR_FAIL;
- }
- HX_RESULT
- PacketQueue::GetPacket(REF(IHXPacket*) pPacket, ULONG32 ulTimeNow)
- {
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "GetPacket(): PktCount %u, WindowSize: %u, CurrentSeq: %un",
- m_pBuf->GetCount(), m_ulMinWindowSize, m_unCurrent);
- fflush(m_pLogFile);
- }
- #endif
- if (!IsBufferingForSure())
- {
- CArrivedPacket* pArrivedPacket;
- if (m_pBuf->Lookup(m_unCurrent, (void*&) pArrivedPacket))
- {
- if (m_bIsFlexTimeWindow ||
- PacketSufficientlyAged(pArrivedPacket, ulTimeNow))
- {
- m_pBuf->RemoveKey(m_unCurrent);
- m_ulLateSinceTermination = 0;
- m_ulLastReturnedArrivalTime = pArrivedPacket->m_ulArrivalTS;
- m_unLastReturnedArrivalSeq = m_unCurrent;
- m_bLastReturnedArrivalSet = TRUE;
- pPacket = pArrivedPacket->m_pPacket;
- pPacket->AddRef();
- delete pArrivedPacket;
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tFOUND TS: %un", pPacket->GetTime());
- fflush(m_pLogFile);
- }
- #endif
- }
- else
- {
- return HXR_NO_DATA;
- }
- }
- else
- {
- // When we recieve RTCP_BYE, window size is set to 0.
- if ((0 == m_ulMinWindowSize) &&
- ((m_pBuf->GetCount() == 0) ||
- (m_ulLateSinceTermination > MAX_GAP_SINCE_TERMINATION)))
- {
- // this stream is done
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tSTREAM_DONEn");
- fflush(m_pLogFile);
- }
- #endif
- ReInitVars();
- return HXR_STREAM_DONE;
- }
- /*
- * The packet hasn't been received yet so create a new
- * one and mark it as lost
- */
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tLOSTn");
- fflush(m_pLogFile);
- }
- #endif
- if (PacketSufficientlyAged(NULL, ulTimeNow))
- {
- if (0 == m_ulMinWindowSize)
- {
- m_ulLateSinceTermination++;
- }
- if (m_bUsesRTPPackets)
- {
- m_pClassFactory->CreateInstance(CLSID_IHXRTPPacket, (void**) &pPacket);
- }
- else
- {
- m_pClassFactory->CreateInstance(CLSID_IHXPacket, (void**) &pPacket);
- }
- if (pPacket)
- {
- pPacket->SetAsLost();
- }
- else
- {
- return HXR_OUTOFMEMORY;
- }
- }
- else
- {
- return HXR_NO_DATA;
- }
- }
- m_bPacketReturned = TRUE;
- m_unCurrent++;
- return HXR_OK;
- }
- return HXR_NO_DATA;
- }
- HX_RESULT
- PacketQueue::GetNextTS(REF(UINT32)ulTS, ULONG32 ulTimeNow)
- {
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "GetNextTS(): PktCount %u, WindowSize: %u, CurrentSeq: %un",
- m_pBuf->GetCount(), m_ulMinWindowSize, m_unCurrent);
- fflush(m_pLogFile);
- }
- #endif
- if (!IsBufferingForSure())
- {
- CArrivedPacket* pArrivedPacket;
- if (m_pBuf->Lookup(m_unCurrent, (void*&) pArrivedPacket))
- {
- if (m_bIsFlexTimeWindow ||
- PacketSufficientlyAged(pArrivedPacket, ulTimeNow))
- {
- ulTS = pArrivedPacket->m_pPacket->GetTime();
- #ifdef _PKTQ_DEBUG
- fprintf(m_pLogFile, "tFOUNDn");
- fflush(m_pLogFile);
- #endif
- return HXR_OK;
- }
- }
- else
- {
- // When we recieve RTCP_BYE, window size is set to 0.
- if ((0 == m_ulMinWindowSize) &&
- ((m_pBuf->GetCount() == 0) ||
- (m_ulLateSinceTermination > MAX_GAP_SINCE_TERMINATION)))
- {
- // this stream is about to end
- HX_ASSERT(!m_pBuf->GetCount());
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tSTREAM_DONEn");
- fflush(m_pLogFile);
- }
- #endif
- ReInitVars();
- return HXR_STREAM_DONE;
- }
- if (PacketSufficientlyAged(NULL, ulTimeNow))
- {
- HX_ASSERT(m_bLastReturnedArrivalSet);
- ulTS = m_ulLastReturnedArrivalTime;
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tLOSTn");
- fflush(m_pLogFile);
- }
- #endif
- return HXR_FAIL;
- }
- }
- }
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "tBUFFERINGn");
- fflush(m_pLogFile);
- }
- #endif
- return HXR_BUFFERING;
- }
- BOOL PacketQueue::PacketSufficientlyAged(CArrivedPacket* pArrivedPacket,
- ULONG32 ulTimeNow)
- {
- BOOL bIsSufficientlyAged = TRUE;
- if (m_ulMinWindowTime != 0)
- {
- if (pArrivedPacket)
- {
- if (((ULONG32) (ulTimeNow - pArrivedPacket->m_ulArrivalTS)) <
- m_ulMinWindowTime)
- {
- bIsSufficientlyAged = FALSE;
- }
- }
- else
- {
- // We are answering for a lost packet
- if (m_bLastReturnedArrivalSet &&
- (m_pBuf->GetCount() > 0))
- {
- if (((ULONG32) (ulTimeNow - m_ulLastReturnedArrivalTime)) <
- m_ulMinWindowTime)
- {
- bIsSufficientlyAged = FALSE;
- }
- }
- else
- {
- // Lost packet is never sufficienly aged unless
- // there is a non-lost packet in the buffer
- bIsSufficientlyAged = FALSE;
- }
- }
- }
- return bIsSufficientlyAged;
- }
- ULONG32 PacketQueue::GetAge(ULONG32 ulTimeNow)
- {
- ULONG32 ulAge = 0;
- CArrivedPacket* pArrivedPacket = NULL;
- if (m_pBuf->Lookup(m_unCurrent, (void*&) pArrivedPacket))
- {
- ulAge = ((ULONG32) (ulTimeNow - pArrivedPacket->m_ulArrivalTS));
- }
- else if (m_bLastReturnedArrivalSet &&
- (m_pBuf->GetCount() > 0))
- {
- ulAge = ((ULONG32) (ulTimeNow - m_ulLastReturnedArrivalTime));
- }
- return ulAge;
- }