hxbufstate.h
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上传日期:2007-06-06
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- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2003 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 HXBUFSTATE_H
- #define HXBUFSTATE_H
- #include "hxtypes.h"
- #include "hxresult.h"
- #include "hxcom.h"
- #include "hxsmbw.h" // IHXASMProps
- #include "hxslist.h" // CHXSimpleList
- class HXBufferingState
- {
- public:
- HXBufferingState();
- ~HXBufferingState();
- void OnStreamHeader(UINT32 ulPreroll,
- UINT32 ulPredata,
- BOOL preDataAtStart,
- BOOL preDataAfterSeek,
- BOOL prerollAtStart,
- BOOL prerollAfterSeek,
- ULONG32 ulAvgBitRate);
- void OnStream(IUnknown* pStream);
- void Init(ULONG32 ulPerfectPlayTime);
-
- void SetMinimumPreroll(UINT32 ulSourcePreroll,
- UINT32 ulInitialAudioPreroll,
- UINT32 ulPerfectPlayTime,
- BOOL bIsRebuffering);
- void Stop();
- void Reset(BOOL bIsSeeking, UINT32 ulSeekTime);
- void GetRemainToBuffer(REF(UINT32) ulRemainToBufferInMs,
- REF(UINT32) ulRemainToBuffer);
- ULONG32 GetMinPrerollInMs() { return m_ulMinimumPrerollInMs;}
- UINT16 GetPercentDone(BOOL bIsSeekPerformed);
- void SetPreroll(ULONG32 ulPreroll) { m_ulPreroll = ulPreroll;}
- void UpdatePreroll(ULONG32 ulPreroll);
- void SetPredata(ULONG32 ulPredata) { m_ulPredata = ulPredata;}
- BOOL HasPreroll(BOOL bIsSeekPerformed);
- BOOL HasPredata(BOOL bIsSeekPerformed);
- INT64 CreateINT64Timestamp(UINT32 ulTime);
- INT64 CreateINT64Timesync(UINT32 ulTime);
- void OnPacket(UINT32 ulTimestamp, UINT32 ulPacketSize,
- UINT32 ulElapsedTime, BOOL bIsLive,
- BOOL bIsBufferedPlayMode);
- void UpdateBufferingInMs(INT64 llRefLowTimestamp,
- INT64 llHighTimestamp,
- BOOL bIsBufferedPlayMode,
- BOOL bIsTimestampDelivery,
- UINT32 ulElapsedTime);
- void UpdateTransportStats(INT64 llLowTSAtTransport,
- INT64 llHighTSAtTransport,
- ULONG32 ulBytesAtTransport,
- BOOL bDoneAtTransport);
- HX_RESULT GetBufferingStats(REF(INT64) llLowTimestamp,
- REF(INT64) llHighTimestamp,
- REF(UINT32) ulBytesBuffered,
- BOOL bUseTransportStats);
- void GetExcessBufferInfo(INT64 llTheLowestTS,
- INT64 llTheHighestTS,
- BOOL bIsSeekPerformed,
- REF(UINT32) ulRemainToBufferInMs,
- REF(UINT32) ulRemainToBuffer,
- REF(UINT32) ulExcessBufferInMs,
- REF(UINT32) ulExcessBuffer,
- REF(UINT32) ulExcessForThisStreamInMs,
- REF(UINT32) ulExcessForThisStream);
-
- UINT32 LastPacketTimestamp() {return m_ulLastPacketTimeStamp;}
-
- INT64 LowTS() { return m_llLowestTimeStamp;}
- UINT32 AvgBandwidth() { return m_ulAvgBandwidth;}
- void OnTimeSync(UINT32 ulCurrentTime);
- // Should remove
- void SetAvgBWToASMBw();
- BOOL DoneAtTransport() { return ((m_ulNumBytesAtTransport == 0) &&
- m_bDoneAtTransport);}
- private:
- void SetMinPrerollInMs(ULONG32 ulMinPrerollInMs,
- ULONG32 ulMinBufferingInMs);
- void UpdateCurrentBufferingInMs(INT64 llLowestTimeStamp,
- INT64 llHighestTimeStamp);
- void SetMinPreroll();
- void SetMinPreroll(UINT32 ulMinPreroll, UINT32 ulMinBuffering);
- void UpdateMinPredata();
- BOOL DataBasedPreroll() { return (m_preDataAtStart || m_preDataAfterSeek);}
- ULONG32 MsToBytes(UINT32 ulValueInMs, UINT32 ulBw) const;
-
- void CalcRemainingToBufferInMs();
- void CalcRemainingToBufferInMs(ULONG32 ulElapsedTime);
- void CalcRemainingToBuffer();
- void CalcRemainingToBuffer(ULONG32 ulDenom);
- UINT32 CalcRemaining(UINT32 ulMinimumBuffering,
- UINT32 ulCurrentBuffering,
- UINT32 ulMinimumPreroll,
- UINT32 ulDenom) const;
-
- /* Functions for tracking the amount of data
- * buffered in the renderer
- */
- void ClearPktInfo(); /* Clears out information about buffered packets */
- void AddPktInfo(INT64 llTimestamp, UINT32 ulPacketSize); /* Called when
- * a packet is
- * sent to the
- * renderer
- */
- UINT32 GetBufferedData(); /* Get the current amount of data buffered
- * in the renderer
- */
- ULONG32 m_ulPreroll;
- ULONG32 m_ulPredata;
- UINT32 m_ulMinimumPrerollInMs;
- UINT32 m_ulMinimumPreroll;
- UINT32 m_ulMinimumBufferingInMs;
- UINT32 m_ulMinimumBuffering;
- UINT32 m_ulRemainingToBufferInMs;
- UINT32 m_ulRemainingToBuffer;
- UINT32 m_ulCurrentBufferingInMs;
- UINT32 m_ulCurrentBuffering;
- HX_BITFIELD m_bIsFirstPacket : 1;
- HX_BITFIELD m_preDataAtStart : 1;
- HX_BITFIELD m_prerollAtStart : 1;
- HX_BITFIELD m_preDataAfterSeek : 1;
- HX_BITFIELD m_prerollAfterSeek : 1;
- INT64 m_llLowestTimeStamp;
- INT64 m_llHighestTimeStamp;
- INT64 m_llLowestTimestampAtTransport;
- INT64 m_llHighestTimestampAtTransport;
- UINT32 m_ulNumBytesAtTransport;
- BOOL m_bDoneAtTransport;
- UINT32 m_ulTSRollOver;
- ULONG32 m_ulLastPacketTimeStamp;
- ULONG32 m_ulAvgBandwidth;
- IHXASMProps* m_pASMProps;
- UINT32 m_ulLastTimeSync;
- INT64 m_llFirstLivePacketTimestamp;
- UINT32 m_ulTimeSyncRollOver;
- // These variable keep track of the amount of
- // data buffered in the renderer
- INT64 m_llCurrentPlaybackTime; /* Cached value of last
- * OnTimeSync() call
- */
- UINT32 m_ulBufferedData; /* Data buffered in renderer.
- * Always use GetBufferedData()
- * to retreive the value
- */
- CHXSimpleList m_pktInfo; /* List of packet information */
- };
- inline
- BOOL HXBufferingState::HasPreroll(BOOL bIsSeekPerformed)
- {
- return (bIsSeekPerformed) ? (m_prerollAfterSeek) : (m_prerollAtStart);
- }
- inline
- BOOL HXBufferingState::HasPredata(BOOL bIsSeekPerformed)
- {
- return (bIsSeekPerformed) ? (m_preDataAfterSeek) : (m_preDataAtStart);
- }
- #endif /* HXBUFSTATE_H */