author | William Roberts <williamr@symbian.org> |
Tue, 16 Mar 2010 16:12:26 +0000 | |
branch | Symbian2 |
changeset 2 | 2fe1408b6811 |
child 4 | 837f303aceeb |
permissions | -rw-r--r-- |
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// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies). |
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// All rights reserved. |
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// This component and the accompanying materials are made available |
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// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members |
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// which accompanies this distribution, and is available |
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// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html". |
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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#ifndef __MMF_AUDIOOUTPUT_H__ |
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#define __MMF_AUDIOOUTPUT_H__ |
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// Standard EPOC32 includes required by this header file |
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#include <e32base.h> |
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#include <e32std.h> |
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#include <mmfaudioiointerfaceuids.hrh> |
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#include <mmf/common/mmfpaniccodes.h> |
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//DevSound |
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#include <mmf/server/sounddevice.h> |
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/** |
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@publishedAll |
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@deprecated |
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*/ |
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const TUint KAudioOutputDefaultFrameSize = 0x1000; |
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void Panic(TInt aPanicCode); |
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/** |
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@publishedAll |
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@released |
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Interface class to allow dynamic linkage to CMMFAudioOutput. |
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class MMMFAudioOutput : public MDataSink |
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{ |
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public: |
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//factory function |
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Gets a new audio output object. |
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@param aImplementationUid |
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The implementation UID. |
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@param aInitData |
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The initialisation data. |
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@return The audio output object. |
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*/ |
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inline static MMMFAudioOutput* NewAudioOutputL(TUid aImplementationUid, const TDesC8& aInitData); |
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//interface |
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Returns the sound device. |
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Accessor function exposing public CMMFDevsound methods. |
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@return A reference to a CMMFDevSound objector. |
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*/ |
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virtual CMMFDevSound& SoundDevice() = 0; |
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/** |
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Returns the number of bytes played. |
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@return The number of bytes played. If 16-bit divide this number returned by 2 to get word |
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length. |
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*/ |
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virtual TInt BytesPlayed() = 0; |
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/** |
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@deprecated |
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Gets audio from hardware device abstracted MMFDevsound (not used). |
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@param aBuffer |
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The data to read in from a Hardware Device |
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@param aSupplier |
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The MDataSink consuming the data contained in aBuffer. |
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*/ |
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virtual void HWEmptyBufferL(CMMFBuffer* aBuffer, MDataSource* aSupplier)=0;//called by a EmptyBufferL if using HW codec |
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protected: |
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//constructor |
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/** |
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Protected constructor. |
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*/ |
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MMMFAudioOutput() : MDataSink(KUidMmfAudioOutput) {} |
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}; |
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inline MMMFAudioOutput* MMMFAudioOutput::NewAudioOutputL( TUid aImplementationUid, const TDesC8& aInitData ) |
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{ |
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//make sure the cast will be ok by checking the uid is what we expect |
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__ASSERT_ALWAYS(aImplementationUid==KUidMmfAudioOutput, Panic(EMMFAudioOutputPanicBadUID)); |
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MMMFAudioOutput* retPtr = STATIC_CAST(MMMFAudioOutput*, MDataSink::NewSinkL(aImplementationUid, aInitData)); |
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return retPtr; |
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} |
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/** |
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@publishedAll |
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@released |
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The interface into DevSound. |
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Abstract data sink class providing an interface into hardware sound output. |
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Uses CMMFDevSound to access such output. |
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*/ |
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class CMMFAudioOutput : public CBase, public MMMFAudioOutput, public MDevSoundObserver |
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{ |
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public: |
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static MDataSink* NewSinkL() ; |
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virtual CMMFAudioOutput::~CMMFAudioOutput(); |
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void ConstructL(); |
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//MDataSink mixin implementations |
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virtual TFourCC SinkDataTypeCode(TMediaId aMediaId); //used by data path MDataSource/Sink for codec matching |
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virtual void EmptyBufferL(CMMFBuffer* aBuffer, MDataSource* aSupplier, TMediaId aMediaId);//called by a MDataSource to empty a buffer |
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virtual void BufferFilledL(CMMFBuffer* aBuffer); //called by MDataSource to pass back full buffer to the sink |
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virtual TBool CanCreateSinkBuffer(); |
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virtual CMMFBuffer* CreateSinkBufferL(TMediaId aMediaId, TBool &aReference); |
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virtual TInt SinkThreadLogon(MAsyncEventHandler& aEventHandler); |
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virtual void SinkThreadLogoff(); |
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virtual void SinkPrimeL(); |
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virtual void SinkPauseL(); |
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virtual void SinkPlayL(); |
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virtual void SinkStopL(); |
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virtual void SetSinkPrioritySettings(const TMMFPrioritySettings& aPrioritySettings); |
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virtual void NegotiateL(MDataSource& aSource); |
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// MMMFAudioOutput mixin implementations |
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TInt BytesPlayed(); |
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void HWEmptyBufferL(CMMFBuffer* aBuffer, MDataSource* aSupplier);//called by a EmptyBufferL if using HW codec |
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CMMFDevSound& SoundDevice(); |
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virtual TInt SetSinkDataTypeCode(TFourCC aSinkFourCC, TMediaId aMediaId); |
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//The following DataType() methods should not be used. |
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//They are provided to maintain BC/SC with 7.0s |
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virtual void SetDataTypeL(TFourCC aAudioType); |
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virtual TFourCC DataType() const; |
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protected: |
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virtual void ConstructSinkL( const TDesC8& aInitData ) ; |
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private: |
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inline CMMFAudioOutput() {} |
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void ConfigDevSoundL(); |
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void LoadL(); |
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TInt State(); |
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//MDevSoundObserver mixin implementations |
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virtual void InitializeComplete(TInt aError); |
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virtual void ToneFinished(TInt aError); |
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virtual void BufferToBeFilled(CMMFBuffer* aBuffer); |
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virtual void PlayError(TInt aError); |
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virtual void BufferToBeEmptied(CMMFBuffer* aBuffer); |
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virtual void RecordError(TInt aError); |
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virtual void ConvertError(TInt aError); |
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virtual void DeviceMessage(TUid aMessageType, const TDesC8& aMsg); |
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virtual void SendEventToClient(const TMMFEvent& /*aEvent*/); |
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public: |
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virtual TBool IsResumeSupported(); |
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private: |
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MAsyncEventHandler* iEventHandler; |
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CMMFDevSound* iMMFDevSound; //this is now private to stop stuff "grabbing it" |
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CMMFBuffer* iAudioBuffer; |
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TInt iInitializeState; |
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enum TState |
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{ |
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EIdle=0, |
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EDevSoundReady, |
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EPaused |
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}; |
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enum TError |
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{ |
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ECantCreateBuffer, |
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EEmptyBuffer, |
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EDevSoundNotLoaded, |
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ERecordNotSupported, |
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EDevSoundError, |
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EUnknown |
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}; |
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MDataSource* iSupplier; |
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TState iState; |
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TBool iCanSendBuffers; |
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TBool iPlayStarted; |
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TBool iDevSoundLoaded; |
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TError iError; |
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TInt iMMFDevsoundError; |
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TMMFPrioritySettings iPrioritySettings; |
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TUint iSourceSampleRate; |
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TUint iSourceChannels; |
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TFourCC iSourceFourCC; |
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TFourCC iDataTypeCode; |
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CMMFDataBuffer* iDevSoundBuffer; |
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TMMFCapabilities iDevSoundConfig; |
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TBool iNeedsSWConversion; |
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TUint iSWConvertSampleRate; |
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TUint iSWConvertChannels; |
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CMMFChannelAndSampleRateConverterFactory* iChannelAndSampleRateConverterFactory; |
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CMMFChannelAndSampleRateConverter* iChannelAndSampleRateConverter; |
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CMMFDataBuffer* iConvertBuffer; |
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CMMFBuffer* iBufferToEmpty; |
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CActiveSchedulerWait* iActiveSchedulerWait; |
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}; |
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#endif |