sl@0: //audiocontext.cpp
sl@0: 
sl@0: // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: 
sl@0: 
sl@0: #include <a3f/maudiostream.h>
sl@0: #include <a3f/maudiocodec.h>
sl@0: #include <a3f/maudiogaincontrol.h>
sl@0: #include <a3f/a3fbase.h>
sl@0: 
sl@0: #include "audiocontext.h"
sl@0: #include "audioprocessingunit.h"
sl@0: #include "logicalaudiostream.h"
sl@0: #include "audiostreammanager.h"
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Default constructor
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: CAudioContext::CAudioContext() 
sl@0: 	{
sl@0: 	TRACE_CREATE();
sl@0: 	DP_CONTEXT(CAudioContext::CAudioContext *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	iInCommit = EFalse;
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 	
sl@0: // ---------------------------------------------------------------------------
sl@0: // Symbian 2nd phase constructor
sl@0: // ---------------------------------------------------------------------------
sl@0: void CAudioContext::ConstructL()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ConstructL *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 
sl@0: 	// Setup Multimedia Resource Control
sl@0: 	User::LeaveIfError(iMMRC.Open(*this));
sl@0: 	User::LeaveIfError(iCriticalSection.CreateLocal());
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Symbian constructor
sl@0: // ---------------------------------------------------------------------------
sl@0: EXPORT_C  CAudioContext* CAudioContext::NewL()
sl@0: 	{
sl@0: 	DP_STATIC_CONTEXT(CAudioContext::NewL *CD0*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	CAudioContext* self = new(ELeave)CAudioContext();
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop(self);
sl@0: 	DP0_RET(self, "0x%x");
sl@0: 	}
sl@0: 	
sl@0: // ---------------------------------------------------------------------------
sl@0: // Destructor
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: EXPORT_C CAudioContext::~CAudioContext()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::~CAudioContext *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	iMMRC.Close();	
sl@0: 	iAudioContextObservers.Close();
sl@0: 	iAudioProcessingUnits.Close();
sl@0: 	if (iActualChain)
sl@0: 		{
sl@0: 		iActualChain->Release();
sl@0: 		};
sl@0: 	iCriticalSection.Close();
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 	
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::SetClientSettings
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::SetClientSettings(const TClientContextSettings& aSettings)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::SetClientSettings *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	iClientSettings = aSettings;
sl@0: 	if( iContextId.Id() == 0 )
sl@0: 		{
sl@0: 		TUint64 id = iMMRC.LogOn(iClientSettings.iProcessId);
sl@0: 		TAudioContextId temp(id);
sl@0: 		iContextId = temp;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = KErrAlreadyExists;
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::GetContextId
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TAudioContextId CAudioContext::ContextId() const 
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ContextId *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	DP_OUT();
sl@0: 	return iContextId;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::Commit
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::Commit()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::Commit *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	iInCommit = ETrue;
sl@0: 	
sl@0: 	if (iClientSettings.iProcessId.Id() == 0)
sl@0: 		{
sl@0: 		DP0_RET(KErrNotReady, "%d");
sl@0: 		}
sl@0: 
sl@0: 	err = iMMRC.SendResourceRequest(iActualChain, iDesiredChain, this);
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::CreateAudioStream
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::CreateAudioStream(MAudioStream *&aStream) 
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::CreateAudioStream *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 
sl@0: 	CAudioStreamManager* manager(NULL);
sl@0: 
sl@0: 	// Create desired logical chain
sl@0: 	TRAP(err, manager = CAudioStreamManager::NewL(KUidAudioStream));
sl@0: 	if(err == KErrNone)
sl@0: 		{
sl@0: 		aStream = static_cast<MAudioStream*>(manager);
sl@0: 
sl@0: 		// Use this as desired chain (this is the one that the client modify)
sl@0: 		CLogicalAudioStream* logicalAudioStream = static_cast<CLogicalAudioStream*>(aStream);
sl@0: 		iDesiredChain = static_cast<MLogicalChain*>(logicalAudioStream); 
sl@0: 		logicalAudioStream->SetParentContext(*this);
sl@0: 		if (iActualChain)
sl@0: 			{
sl@0: 			iActualChain->Release();
sl@0: 			iActualChain=NULL;
sl@0: 			}
sl@0: 		TRAP(err, iActualChain = iDesiredChain->CloneL());
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::DeleteAudioStream
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::DeleteAudioStream(MAudioStream *&aStream)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::DeleteAudioStream *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	CAudioStreamManager* manager = static_cast<CAudioStreamManager*>(aStream);
sl@0: 	delete manager;
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::CreateAudioProcessingUnit
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::CreateAudioProcessingUnit(TUid aTypeId, MAudioProcessingUnit *&aProcessingUnit)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::CreateAudioProcessingUnit *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	TAudioComponentId unitInstance = GetAndSetInstanceID();
sl@0: 	
sl@0: 	CAudioProcessingUnit* pUnit=NULL;
sl@0: 	TComponentParameters cParameters;
sl@0: 	cParameters.iTypeUid = aTypeId;
sl@0: 	cParameters.iInstanceId = unitInstance;
sl@0: 	cParameters.iContextId = iContextId;
sl@0: 	cParameters.iSettingsObserver = this;
sl@0: 	
sl@0: 	TRAP(err, pUnit = CAudioProcessingUnit::NewL(cParameters));
sl@0: 	if (err==KErrNone)
sl@0: 		{
sl@0: 		aProcessingUnit = static_cast<MAudioProcessingUnit*>(pUnit);
sl@0: 		err = iAudioProcessingUnits.Append(aProcessingUnit);
sl@0: 		if(err!=KErrNone)
sl@0: 			{
sl@0: 			delete pUnit;
sl@0: 			aProcessingUnit = NULL;
sl@0: 			}
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::DeleteAudioProcessingUnit
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::DeleteAudioProcessingUnit(
sl@0: 	MAudioProcessingUnit *&aProcessingUnit)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::DeleteAudioProcessingUnit *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	DP_OUT();
sl@0: 	CAudioProcessingUnit* cUnit = static_cast<CAudioProcessingUnit*>(aProcessingUnit);
sl@0: 	TAudioComponentId param = aProcessingUnit->InstanceId();
sl@0: 	TUint count= iAudioProcessingUnits.Count();
sl@0: 		
sl@0: 	for ( TUint i(0); i < count; i++ )
sl@0: 		{
sl@0: 		// find and delete component
sl@0: 		if( iAudioProcessingUnits[i]->InstanceId() == param)
sl@0: 			{
sl@0: 			iAudioProcessingUnits.Remove(i);
sl@0: 			delete cUnit;
sl@0: 			break;
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::RegisterAudioContextObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::RegisterAudioContextObserver(
sl@0: 	MAudioContextObserver& aObserver)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::RegisterAudioContextObserver *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = iAudioContextObservers.Find(&aObserver);
sl@0: 	if( err != KErrNotFound )
sl@0: 		{
sl@0: 		err = KErrAlreadyExists;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		err = iAudioContextObservers.Append(&aObserver);
sl@0: 		}
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::UnregisterAudioContextObserver
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::UnregisterAudioContextObserver(
sl@0: 	MAudioContextObserver& aObserver)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::UnregisterAudioContextObserver *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	
sl@0: 	TInt idxOrErr = iAudioContextObservers.Find(&aObserver);
sl@0: 	if( idxOrErr != KErrNotFound )
sl@0: 		{
sl@0: 		iAudioContextObservers.Remove(idxOrErr);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::Interface
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TAny* CAudioContext::Interface(TUid aType)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::Interface *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TAny* interface = NULL;
sl@0: 	if(aType == KUIdAudioResourceNotification)
sl@0: 		{
sl@0: 		#ifndef SYMBIAN_DISABLE_ARN
sl@0: 		interface = static_cast<MA3FDevSoundAutoPauseResume*>(this);
sl@0: 		#else
sl@0: 		interface = NULL;
sl@0: 		#endif
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		interface = NULL;
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	return interface;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MAudioContext
sl@0: // CAudioContext::Reset
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: TInt CAudioContext::Reset()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::Reset *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err = KErrNone;
sl@0: 	if (iInCommit)
sl@0: 		{
sl@0: 		err = KErrNotReady;
sl@0: 		}
sl@0: 	iDesiredChain->ResetMessage();
sl@0: 	iDesiredChain->CopySettings(*iActualChain);
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MMultimediaResourceControlObserver
sl@0: // CAudioContext::ReceiveResourceResponse
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::ReceiveResourceResponse(MLogicalChain* aAppliedChain, TInt aError)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ReceiveResourceResponse *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	
sl@0: 	iCriticalSection.Wait();
sl@0: 	iMsgVersion++;
sl@0: 	iMMRC.ResetMessages();
sl@0: 	iCriticalSection.Signal();
sl@0: 	
sl@0: 	if ( aError == KErrNone || iPreempted )
sl@0: 		{
sl@0: 		if ( iPreempted )
sl@0: 			{
sl@0: 			iPreempted = EFalse;
sl@0: 			}
sl@0: 		// Desired chain was commited succesfully
sl@0: 		TInt err;
sl@0: 		MLogicalChain* lc = NULL;
sl@0: 		TRAP(err, lc = aAppliedChain->CloneL());
sl@0: 		DP1(DLERR,"ECloneLeftWhenReceivingResourceResponse %d", err);
sl@0: 		__ASSERT_DEBUG(err == KErrNone, Panic(ECloneLeftWhenReceivingResourceResponse));
sl@0: 		if ( iActualChain )
sl@0: 			{
sl@0: 			iActualChain->Release();
sl@0: 			}
sl@0: 		iActualChain = lc;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		iDesiredChain->CopySettings(*iActualChain);
sl@0: 		}
sl@0: 	iDesiredChain->ResetMessage();
sl@0: 	ContextEventSignal(KUidA3FContextUpdateComplete, aError);
sl@0: 	iInCommit = EFalse;
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MMultimediaResourceControlObserver
sl@0: // CAudioContext::ReceiveResourceUpdate
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::ReceiveResourceUpdate(MLogicalChain* /*aMessage*/, TInt aError)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ReceiveResourceUpdate *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	ContextEventSignal(KUidA3FContextCommitUpdate, aError);	
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MMultimediaResourceControlObserver
sl@0: // CAudioContext::ReceivePreemptionUpdate
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::ReceivePreemptionUpdate(MLogicalChain* /*aMessage*/, TInt aError)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ReceivePreemptionUpdate *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	iPreempted = ETrue;
sl@0: 	if(iInCommit)
sl@0: 		{
sl@0: 		// Send only one callback
sl@0: 		ContextEventSignal(KUidA3FContextPreEmptedCommit, aError);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		// Send two callbacks
sl@0: 		ContextEventSignal(KUidA3FContextPreEmption, aError);
sl@0: 		ContextEventSignal(KUidA3FContextPreEmptionUpdate, aError);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MLogicalSettingObserver
sl@0: // CAudioContext::ReceiveComponentSettingsChange
sl@0: // ---------------------------------------------------------------------------
sl@0: void CAudioContext::ReceiveComponentSettingsChange(TUid /*aId*/, TMMRCMessageType aMessageType)
sl@0: 	{
sl@0: 	iDesiredChain->SetMessageType(aMessageType);
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Internals
sl@0: // CAudioContext::GetAndSetInstanceID
sl@0: // ---------------------------------------------------------------------------
sl@0: TAudioComponentId CAudioContext::GetAndSetInstanceID()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::GetAndSetInstanceID *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TUint id(1); // start ID count from 1
sl@0: 	TAudioComponentId idComponent(1);
sl@0: 	TUint count = iAudioProcessingUnits.Count();
sl@0: 	if ( count < KMaxTUint )
sl@0: 		{
sl@0: 		id = ++count;
sl@0: 		}
sl@0: 	idComponent = id;
sl@0: 	DP_OUT();
sl@0: 	return idComponent;
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // Internals
sl@0: // CAudioContext::ContextEventSignal
sl@0: // ---------------------------------------------------------------------------
sl@0: void CAudioContext::ContextEventSignal(TUid aEvent, TInt aError)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::ContextEventSignal *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TUint count = iAudioContextObservers.Count();
sl@0: 	for ( TUint idx(0); idx < count; idx++ )
sl@0: 		{
sl@0: 		iAudioContextObservers[idx]->ContextEvent(aEvent, aError);
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioContext::GetLogicalChain
sl@0: // ---------------------------------------------------------------------------
sl@0: EXPORT_C MLogicalChain* CAudioContext::GetLogicalChain(TInt aIndex)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::GetLogicalChain *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	MLogicalChain* logChain = NULL;
sl@0: 	if (aIndex == 0)
sl@0: 		{
sl@0: 		logChain = iDesiredChain;
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		logChain = iActualChain;
sl@0: 		}
sl@0: 	DP_OUT();
sl@0: 	return logChain;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioContext::RegisterAsClient
sl@0: // ---------------------------------------------------------------------------
sl@0: TInt CAudioContext::RegisterAsClient(TUid aEventType, const TDesC8& aNotificationRegistrationData, MA3FDevSoundAutoPauseResumeObserver* aObserverPtr)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::RegisterAsClient *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	iObserverPtr = aObserverPtr;
sl@0: 	err = iMMRC.RegisterAsClient(aEventType, aNotificationRegistrationData);
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioContext::CancelRegisterAsClient
sl@0: // ---------------------------------------------------------------------------
sl@0: TInt CAudioContext::CancelRegisterAsClient(TUid aEventType)
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::CancelRegisterAsClient *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	err = iMMRC.CancelRegisterAsClient(aEventType);
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 	
sl@0: // ---------------------------------------------------------------------------
sl@0: // CAudioContext::WillResumePlay
sl@0: // ---------------------------------------------------------------------------
sl@0: TInt CAudioContext::WillResumePlay()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::WillResumePlay *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	TInt err(KErrNone);
sl@0: 	err = iMMRC.WillResumePlay();
sl@0: 	DP0_RET(err, "%d");
sl@0: 	}
sl@0: 	
sl@0: // ---------------------------------------------------------------------------
sl@0: // From class MMultimediaResourceControlObserver
sl@0: // CAudioContext::CanResume
sl@0: // ---------------------------------------------------------------------------
sl@0: //
sl@0: void CAudioContext::CanResume()
sl@0: 	{
sl@0: 	DP_CONTEXT(CAudioContext::CanResume *CD1*, CtxDevSound, DPLOCAL);
sl@0: 	DP_IN();
sl@0: 	if(iObserverPtr)
sl@0: 		{
sl@0: 		iObserverPtr->NotifyResume();
sl@0: 		}	
sl@0: 	DP_OUT();
sl@0: 	}
sl@0: 
sl@0: void CAudioContext::Panic(TAudioContextPanicCodes aCode)
sl@0: 	{
sl@0: 	User::Panic(KAudioContextPanicCategory, aCode);
sl@0: 	}
sl@0: 	
sl@0: EXPORT_C TInt CAudioContext::MsgVersion()
sl@0: 	{
sl@0: 	return iMsgVersion;
sl@0: 	}
sl@0: 	
sl@0: EXPORT_C RCriticalSection& CAudioContext::CriticalSection()
sl@0: 	{
sl@0: 	return iCriticalSection;
sl@0: 	}
sl@0: // End of file