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/*
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* Copyright (c) 2006-2009 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 "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.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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*/
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#ifndef MMFDEVSOUNDCALLBACKHANDLER_H
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#define MMFDEVSOUNDCALLBACKHANDLER_H
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// INCLUDES
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#include <e32base.h>
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#include <e32msgqueue.h>
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#include "mmfaudioclientserver.h"
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// CLASS DECLARATION
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class RMMFDevSoundProxy;
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class MDevSoundObserver;
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/**
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* Utility class to handle Play Error callback from DevSound server.
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*
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* @lib MMFDevSound.dll
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* @since
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*/
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class CMsgQueueHandler : public CActive
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{
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public: // Constructors and destructor
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/**
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* Constructs, and returns a pointer to, a new
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* CMMFPlayErrorHandler object.
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* Leaves on failure..
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* @param RMMFDevSoundProxy* aDevSoundProxy A handle to DevSoundProxy to
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* subcribe for event notification from server.
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* @param MDevSoundObserver& aDevSoundObserver A reference to
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* MDevSoundObserver to which the events will be forwarded to.
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* @param aDevSoundCIObserver Observer which will receive Custom Interface events
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* @return CMMFPlayErrorHandler* A pointer to newly created object.
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*/
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static CMsgQueueHandler* NewL(RMMFDevSoundProxy* aDevSoundProxy,
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MDevSoundObserver& aDevSoundObserver,
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RMsgQueue<TMMFDevSoundQueueItem>* aMsgQueue,
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MMMFDevSoundCustomInterfaceObserver& aDevSoundCIObserver);
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/**
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* Destructor.
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*/
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~CMsgQueueHandler();
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/**
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* Subscribes for Play Error event from DevSound server.
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* @since
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* @return void
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*/
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void ReceiveEvents();
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/**
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* Called by DevSound server when Play Error event occurs.
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* Leaves on failure.
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* @since
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* @return void
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*/
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void RunL();
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/**
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* Called by CActive object framework if RunL leaves.
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* @since
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* @param TInt aError Reason for leave
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* @return TInt KErrNone if error is handled succesfully, else
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* corresponding error codel
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*/
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TInt RunError(TInt aError);
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/**
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* Called by CActive object framework when client cancels active object.
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* @since
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* @return void
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*/
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void DoCancel();
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/**
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* Called as part of Stop() process to recover any buffers etc
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*/
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void Finish();
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private:
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/**
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* C++ default constructor.
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*/
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CMsgQueueHandler(RMMFDevSoundProxy* aDevSoundProxy,
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MDevSoundObserver& aDevSoundObserver,
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RMsgQueue<TMMFDevSoundQueueItem>* aMsgQueue,
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MMMFDevSoundCustomInterfaceObserver& aDevSoundCIObserver);
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/**
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* By default Symbian 2nd phase constructor is private.
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*/
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void ConstructL();
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/*
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* Handles initialization completion event.
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*/
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void DoInitComplete();
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/*
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* Handles play completion or cancel event.
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*/
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void DoPlayErrorComplete();
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/*
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* Handles record completion or cancel event.
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*/
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void DoRecordErrorComplete();
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/*
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* Handles CMMFDevSound object's data request event to supply
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* CMMFDevSound with the buffer that it needs to play.
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*/
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void DoBTBFCompleteL();
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/*
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* Handles CMMFDevSound object's data request event to supply
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* CMMFDevSound with the buffer that it needs to record.
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*/
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void DoBTBECompleteL();
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/*
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* Handles tone play completion event.
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*/
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void DoToneFinishedComplete();
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/*
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* Sends DevSound server event completion notification to the client.
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*/
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void DoSendEventToClientComplete();
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/* Handles CMMFDevSound object's data request event to supply
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* CMMFDevSound with the last buffer that it needs to record.
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*/
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void DoPausedRecordComplete();
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/*
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* Allocates local data buffer and links it with the global chunk.
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* @param aHandle Handle to a global chunk or 0 if chunk already exists.
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*/
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void AssignDataBufferToChunkL(TInt aHandle);
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/*
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* Update existing data buffer with latest buffer info from server
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* but using existing chunk
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*/
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void UpdateDataBufferL();
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static TInt AsyncQueueFinishCallback(TAny* aPtr);
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void DoAsyncQueueFinishCallback();
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private:
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RMMFDevSoundProxy* iDevSoundProxy;
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MDevSoundObserver& iDevSoundObserver;
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TMMFDevSoundProxyHwBufPckg iSetPckg;
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TMMFEventPckg iEventPckg;
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RMsgQueue<TMMFDevSoundQueueItem>* iMsgQueue;
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TMMFDevSoundQueueItem iCurrentItem;
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RChunk iChunk;
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TPtr8 iChunkDataPtr;
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CMMFPtrBuffer* iDataBuffer;
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CMMFDataBuffer* iEmptyBuffer;
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MMMFDevSoundCustomInterfaceObserver& iDevSoundCIObserver;
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CAsyncCallBack* iAsyncQueueFinish;
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};
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#endif // MMFDEVSOUNDCALLBACKHANDLER_H
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// End of File
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