author | hgs |
Fri, 15 Oct 2010 12:29:39 +0300 | |
changeset 80 | d6dafc5d983f |
parent 23 | 98ccebc37403 |
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/* |
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* Copyright (c) 2002 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: Request used to write or read data |
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* |
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*/ |
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|
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#ifndef CMMASTREAMREQUEST_H |
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#define CMMASTREAMREQUEST_H |
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|
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// INCLUDES |
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#include <e32base.h> |
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#include "MMMAStreamRequestListener.h" |
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// CONSTANTS |
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const TInt KMMAStreamRequestBufferSize = 5120; |
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|
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/** |
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* - If CActive::IsActive returns ETrue, data is procedded in the server. |
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* - If CActive::IsActive returns EFalse and DataPtr is empty request is |
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* ready for reuse |
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* - If CActive::IsActive returns EFalse and DataPtr is not empty request |
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* is waiting to be written. |
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*/ |
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class CMMAStreamRequest: public CActive |
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{ |
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public:// Constructor and destructor |
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/** |
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* @param aListener will be informed when request completes |
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*/ |
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static CMMAStreamRequest* NewLC(MMMAStreamRequestListener* aListener); |
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|
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/** |
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* Destructor |
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*/ |
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~CMMAStreamRequest(); |
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|
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public: // new methods |
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/** |
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* @return TPtr to request's data |
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*/ |
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TPtr8& DataPtr(); |
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/** |
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* Completes read request. |
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* @param aError system error code |
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*/ |
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void CompleteRead(TInt aError); |
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/** |
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* MMMAStreamRequestListener will be informed when request is ready. |
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*/ |
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void SetActive(); |
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/** |
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* 1 if this is stream's last buffer |
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* @return reference to request buffer |
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*/ |
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TPckgBuf< TInt >& RequestBuffer(); |
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public: // From CActive |
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void RunL(); |
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TInt RunError(TInt aError); |
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void DoCancel(); |
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private: // Constructor |
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CMMAStreamRequest(MMMAStreamRequestListener* aListener); |
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void ConstructL(); |
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private: // Data |
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// will be informed when request is complete |
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MMMAStreamRequestListener* iListener; |
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// owned data |
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HBufC8* iData; |
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// ptr to iData or NULL if data is processed. |
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TPtr8 iDataPtr; |
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// Request buffer |
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TPckgBuf< TInt > iRequestBuffer; |
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}; |
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#endif // CMMASTREAMREQUEST_H |