hxsm.h
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- /* ***** BEGIN LICENSE BLOCK *****
- * Source last modified: $Id: hxsm.h,v 1.6.2.1 2004/07/09 02:05:40 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 ***** */
- #ifndef _HXSM_H_
- #define _HXSM_H_
- #include "hxtypes.h"
- #include "hxcom.h"
- #include "hxsmbw.h"
- #include "hxslist.h"
- class CHXSimpleList;
- class ASMRuleBook;
- struct IHXSourceBandwidthInfo;
- struct IHXErrorMessages;
- class ASMStreamInfo;
- class ASMSourceInfo;
- class HXSM;
- struct IHXValues;
- #define NUM_REPORTS_NEEDED_TO_UPSHIFT 4
- #define BW_DETECTION_DATA_POINTS 1024
- #define TCP_BANDWIDTH_WINDOW 20000
- class ASMSourceInfo : public IHXBandwidthManagerInput
- {
- public:
- UINT32 m_ulLastReportTime;
- UINT32 m_ulIncomingBandwidth;
- UINT32 m_ulRateBeforeDeAccel;
- INT32 m_lTimeDiffBase; //this must be signed !!!
- UINT32 m_ulBytesBehind;
- INT32 m_lLastBehindTime;
- UINT32 m_ulLastSetDelivery;
- UINT32 m_ulSubscribedBw;
- UINT32 m_ulMaxSubscribedBw;
- UINT32 m_ulMasterOffer;
- HX_BITFIELD m_bBehind : 1;
- HX_BITFIELD m_bLossBehind : 1;
- HX_BITFIELD m_bSlightlyBehind : 1;
- HX_BITFIELD m_bTimeStampDelivery : 1;
- HX_BITFIELD m_bPendingChill : 1;
- HX_BITFIELD m_bInvalidUpReport : 1;
- HX_BITFIELD m_bPerfectPlay : 1;
- HX_BITFIELD m_bIsDone : 1;
- HX_BITFIELD m_bMayBeAccelerated : 1;
- HX_BITFIELD m_bTryToUpShift : 1;
- HX_BITFIELD m_bAdjustBandwidth : 1;
- UINT32 m_ulLowestBandwidthBeforeTimeStamp;
- /*
- * The following are switches used in load testing only to control
- * whether or not any fall forward or fall back rate negotiation
- * goes on. There is a master switch, m_bDisableBothAccelDecel,
- * in the HXSM class that effects both of these swiches, globaly,
- * for ALL sources regardless of URL option switches.
- *
- * Option switches are: "DoAccel", "DoDecel"
- *
- * NOTE: DoAccel and DoDecel control both Accelleration/Deceleration
- * and upshifting and downshifting of SureStream sources.
- */
- HX_BITFIELD m_bSourceAccelAllowed : 1;
- HX_BITFIELD m_bSourceDecelAllowed : 1;
- private:
- HX_BITFIELD m_bSlidingBwWindowReady : 1;
- public:
- ASMRuleBook* m_pMasterRuleBook;
- ASMStreamInfo** m_pStreams;
- CHXSimpleList m_SubscriptionChanges;
- UINT32 GetBandwidthSince(UINT32 ulTime, UINT32 ulNow);
- UINT32 GetBandwidth();
- TRANSPORT_TYPE m_TransportType;
- ASMSourceInfo(HXSource* pSource, HXSM* pHXASM);
- ~ASMSourceInfo();
- void Done();
- STDMETHOD (QueryInterface ) (THIS_ REFIID ID, void** ppInterfaceObj);
- STDMETHOD_(UINT32, AddRef ) (THIS);
- STDMETHOD_(UINT32, Release) (THIS);
- /*
- * IHXBandwidthManagerInput methods
- */
- STDMETHOD(ReportDataPacket) (THIS_
- UINT32 ulTimeStamp,
- UINT32 ulArrivedTimeStamp,
- UINT32 ulSize);
- STDMETHOD(ReportUpshiftInfo) (THIS_
- UINT32 ulTimeStamp,
- UINT32 ulSize);
- STDMETHOD(ReportLatency) (THIS_
- UINT32 ulServerTime,
- UINT32 ulClientTime);
- STDMETHOD(SetCongestionFactor) (THIS_
- UINT32 ulFactor);
- STDMETHOD(SetTransportType) (THIS_
- TRANSPORT_TYPE type);
- HXSource* m_pSource;
- IHXSourceBandwidthInfo* m_pSBI;
- /* If the source has enough data, it may tell the bandwidth
- * manager to cut down on accelerated buffering.
- */
- void ChangeAccelerationStatus (BOOL bMayBeAccelerated,
- BOOL bUseAccelerationFactor,
- UINT32 ulAccelerationFactor);
- private:
- UINT32 THRESHOLD;
- INT32 m_lOuterThreshold;
- INT32 CalcBackup(UINT32, UINT32);
- INT32 m_lRefCount;
- typedef struct _BwDetectionData
- {
- UINT32 m_ulSize;
- UINT32 m_ulTimeStamp;
- UINT32 m_ulATime;
- } BwDetectionData;
-
- /* For Bandwidth Detection */
- BwDetectionData* m_pBwDetectionData;
- UINT32 m_ulBwDetectionDataLen;
- UINT32 m_ulSlidingWindowLocation;
- UINT32 m_ulBwDetectionDataCount;
- HXSM* m_pHXASM;
- private:
- BOOL AllocBWDetectionData(UINT32 ulReqSize);
- };
- class ASMStreamInfo
- {
- public:
- BOOL m_bTimeStampDelivery;
- void NotifyTimeStampDelivery();
- void NotifyLimitBandwidth(UINT32 ulBandwidth);
- void NotifyNewBandwidth();
- void SetLastBandwidth(UINT32 ulOffer);
- ASMStreamInfo();
- ~ASMStreamInfo();
- ASMSourceInfo* m_pASMSourceInfo;
- IHXStreamBandwidthNegotiator* m_pNegotiator;
- IHXStreamBandwidthBias* m_pBias;
- IHXAtomicRuleGather* m_pRuleGather;
- UINT32 m_ulFixedBandwidth;
- UINT32 m_ulLastBandwidth;
- float* m_pThreshold;
- UINT32 m_ulNumThresholds;
- UINT32 m_ulThresholdPosition;
- UINT32 m_ulResistanceToLower;
- UINT32 m_ulOffer;
- UINT32 m_ulMasterRuleBookSetOffer;
- UINT32 m_ulMaxEffectiveThreshold;
- UINT32 m_ulStreamNumber;
- };
- class HXSM : public IHXBandwidthManager
- {
- public:
- HXSM();
- ~HXSM();
- STDMETHOD (QueryInterface ) (THIS_ REFIID ID, void** ppInterfaceObj);
- STDMETHOD_(UINT32, AddRef ) (THIS);
- STDMETHOD_(UINT32, Release) (THIS);
- /*
- * IHXBandwidthManager methods
- */
- STDMETHOD(RegisterSource) (THIS_
- HXSource* pSource,
- IUnknown* pUnknown);
- STDMETHOD(RegisterSourcesDone) (THIS);
- STDMETHOD_(BOOL, NotEnoughBandwidth)(THIS);
- STDMETHOD(UnRegisterSource) (THIS_
- HXSource* pSource);
- /* If the source has enough data, it may tell the bandwidth
- * manager to cut down on accelerated buffering.
- */
- STDMETHOD(ChangeAccelerationStatus) (THIS_
- HXSource* pSource,
- BOOL bMayBeAccelerated,
- BOOL bUseAccelerationFactor,
- UINT32 ulAccelerationFactor);
- void UpShiftInfo(UINT32 ulTimeStamp, UINT32 ulSize);
- /* Called by HXPlayer at end of each presentation */
- STDMETHOD(PresentationDone) (THIS);
- STDMETHOD(ChangeBW) (THIS_
- UINT32 newBW, HXSource* pSource);
- typedef enum { HX_NONE, CONGESTION, INIT, INIT_REDIST, REDIST, REDO_ACCEL, CHILL_BUFFERING } RState;
- RState m_State;
- private:
- INT32 m_lRefCount;
- IHXValues* m_pSubscriptionVariables;
- CHXSimpleList* m_pASMSourceInfo;
- CHXSimpleList* m_pASMStreamInfo;
- UINT32 m_ulOriginalHighestBandwidthAvail;
- UINT32 m_ulHighestBandwidthAvail;
- UINT32 m_ulPeakUsedBandwidth;
- UINT32 m_ulUpShiftTimes[5];
- UINT32 m_ulUpShiftSizes[5];
- UINT32 m_ulUpShiftRingPos;
- UINT32 m_ulUpShiftBandwidthAvail;
- UINT32 m_ulNumSources;
- UINT32 m_ulMaxAccelBitRate;
- UINT32 m_ulResistanceBitRate;
- UINT32 m_ulOriginalResistanceBitRate;
- INT32 m_ulNumReportsSinceUpShift;
- UINT32 m_ulLastStableBandwidth;
- UINT32 m_ulUpShiftTestPointScaleFactor;
- UINT32 m_ulOfferToRecalc;
- UINT32 m_ulNextPacketWindow;
- INT32 m_lPacketCounter;
- UINT32 m_ulUpShiftPastResistanceCount;
- INT16 m_lLoss : 16;
- HX_BITFIELD m_bInitialHighBwAvail : 1;
- HX_BITFIELD m_bPipeFull : 1;
- HX_BITFIELD m_bUpShiftInfoReady : 1;
- HX_BITFIELD m_bDidOfferUpShiftToRecalc : 1;
- HX_BITFIELD m_bEnableSDB : 1;
- /****************************************************************
- * The following are switches used in load testing only to control
- * whether or not any fall forward or fall back rate negotiation
- * goes on. The acceleration or deceleration can be controled with
- * the m_bDoAccel and m_bDoDecel switches. All rate changes can
- * be turned off with the m_bDisableBothAccelDecel switch which
- * overrides any values in the m_bDoAccel and m_bDoDecel switches.
- * if the m_bDisableBothAccelDecel switch is FALSE(0) then it has
- * no effect.
- *
- * Preference Keys are:
- * DoAccel, DoDecel, LoadTest,
- * DisableBothAccelDecel
- *****************************************************************/
- BOOL m_bLoadTest;
- BOOL m_bDoAccel;
- BOOL m_bDoDecel;
- BOOL m_bDisableBothAccelDecel;
- HXFLOAT m_fAccelerationFactor;
- #ifndef GOLD
- IHXErrorMessages* m_pEM;
- #endif
- void Recalc();
- void RecalcAccel();
-
- friend class ASMSourceInfo;
- };
- #endif /* ifndef _HXSM_H_ */