packetq.h
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上传日期:2007-06-06
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文件大小:6k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 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
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (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.
- *
- * 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 ***** */
- #ifndef _PACKETQ_H_
- #define _PACKETQ_H_
- // #define _PKTQ_DEBUG
- class PacketQueue
- {
- public:
- /****** Public Class Methods ******************************************/
- PacketQueue(const UINT32 ulWinSize = 25,
- const UINT16 unProbation = 2,
- const UINT32 ulWinTime = 0,
- const BOOL bUsesRTPPackets = FALSE);
- ~PacketQueue();
- HX_RESULT Init(IHXCommonClassFactory* pClassFactory);
- HX_RESULT AddPacket(UINT16 unSeq,
- IHXPacket* pPacket,
- ULONG32 ulArrivalTime = 0);
- HX_RESULT GetPacket(REF(IHXPacket*) pPacket, ULONG32 ulTimeNow = 0);
- HX_RESULT GetNextTS(REF(UINT32)ulTS, ULONG32 ulTimeNow = 0);
- UINT16 GetPercentDone(void);
- ULONG32 GetAge(ULONG32 ulTimeNow);
- /****** inlines ******/
- inline void SetMinWindowSize(UINT32 ulWinSize);
- inline void SetMinWindowTime(UINT32 ulWinTime);
- inline UINT32 GetMinWindowSize(void);
- UINT32 GetMinWindowTime(void) { return m_ulMinWindowTime; }
- inline UINT32 GetLatePktCount(void);
- inline UINT32 GetQueuedPktCount(void);
- inline BOOL IsUntouched(void) { return m_bInitial; }
- inline void SetFlexTimeWindow(BOOL bIsFlexTimeWindow);
- inline BOOL IsFlexTimeWindow(void) { return m_bIsFlexTimeWindow; }
-
- private:
- class CArrivedPacket
- {
- public:
- CArrivedPacket(IHXPacket* pPacket,
- ULONG32 ulArrivalTS)
- : m_pPacket(pPacket)
- , m_ulArrivalTS(ulArrivalTS)
- {
- if (pPacket)
- {
- pPacket->AddRef();
- }
- }
- ~CArrivedPacket()
- {
- HX_RELEASE(m_pPacket);
- }
- IHXPacket* m_pPacket;
- ULONG32 m_ulArrivalTS;
- };
- void ReInitVars(void);
- inline BOOL IsSeqNumGT(UINT16 seq1, UINT16 seq2)
- {
- return (((INT16) (seq1 - seq2)) > 0);
- }
- BOOL PacketSufficientlyAged(CArrivedPacket* pArrivedPacket,
- ULONG32 ulTimeNow);
- inline BOOL IsBufferingForSure(void)
- {
- BOOL bIsBufferingForSure = FALSE;
- if (m_ulMinWindowTime == 0)
- {
- bIsBufferingForSure = TRUE;
- if (((UINT32) m_pBuf->GetCount()) >= m_ulMinWindowSize)
- {
- bIsBufferingForSure = FALSE;
- }
- }
- return bIsBufferingForSure;
- }
- CHXMapLongToObj* m_pBuf;
- const UINT16 m_unInitProbation;
- UINT32 m_ulMinWindowSize;
- UINT32 m_ulMinWindowTime;
- UINT32 m_ulLate;
- UINT32 m_ulLateSinceTermination;
- BOOL m_bIsFlexTimeWindow;
- BOOL m_bUsesRTPPackets;
- ULONG32 m_ulLastReturnedArrivalTime;
- UINT16 m_unLastReturnedArrivalSeq;
- BOOL m_bLastReturnedArrivalSet;
- UINT16 m_unCurrent;
- BOOL m_bPacketReturned;
- IHXCommonClassFactory* m_pClassFactory;
- BOOL m_bInitial;
- UINT16 m_unProbation;
- #ifdef _PKTQ_DEBUG
- FILE* m_pLogFile;
- #endif
- };
- inline void
- PacketQueue::SetMinWindowSize(UINT32 ulWinSize)
- {
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "**** Setting WindowSize: %un", ulWinSize);
- fflush(stdout);
- }
- #endif
- m_ulMinWindowSize = ulWinSize;
- }
- inline void
- PacketQueue::SetMinWindowTime(UINT32 ulWinTime)
- {
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "**** Setting WindowTime: %un", ulWinTime);
- fflush(stdout);
- }
- #endif
- m_ulMinWindowTime = ulWinTime;
- }
- inline void
- PacketQueue::SetFlexTimeWindow(BOOL bIsFlexTimeWindow)
- {
- #ifdef _PKTQ_DEBUG
- if (m_pLogFile)
- {
- fprintf(m_pLogFile, "**** Setting Flex TimeWindow: %un", bIsFlexTimeWindow);
- fflush(stdout);
- }
- #endif // _PKTQ_DEBUG
- m_bIsFlexTimeWindow = bIsFlexTimeWindow;
- }
- inline UINT32
- PacketQueue::GetMinWindowSize(void)
- {
- return m_ulMinWindowSize;
- }
- inline UINT32
- PacketQueue::GetLatePktCount(void)
- {
- return m_ulLate;
- }
- inline UINT32
- PacketQueue::GetQueuedPktCount(void)
- {
- return m_pBuf ? m_pBuf->GetCount() : 0;
- }
- #endif