1 /*

     2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 *

    16 */

    17 

    18 #ifndef __ACTIVEWRITER_H__

    19 #define __ACTIVEWRITER_H__

    20 

    21 #include <e32base.h>

    22 #include <d32usbc.h>

    23 

    24 class RDevUsbcClient;

    25 class MWriteObserver;

    26 

    27 NONSHARABLE_CLASS(CActiveWriter) : public CActive

    28 /**

    29  * Active object to post write requests on the LDD.

    30  */

    31 	{

    32 public: 									   

    33 	static CActiveWriter* NewL(MWriteObserver& aParent, RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);

    34 	~CActiveWriter();

    35 

    36 public:

    37 	void Write(const TDesC8& aDes, 

    38 		TInt aLen, 

    39 		TBool aZlp);

    40 

    41 private:

    42 	CActiveWriter(MWriteObserver& aParent, RDevUsbcClient& aLdd, TEndpointNumber aEndpoint);

    43 

    44 private: // from CActive

    45 	virtual void DoCancel();

    46 	virtual void RunL();

    47 

    48 private: // unowned

    49 	MWriteObserver& iParent;

    50 	RDevUsbcClient& iLdd;

    51 

    52 private: // owned

    53 	TEndpointNumber iEndpoint;

    54 

    55 	enum TWritingState

    56 		{

    57 		EFirstMessagePart,

    58 		EFinalMessagePart,

    59 		ECompleteMessage,		

    60 		};

    61 		

    62 	enum

    63 		{

    64 		KMaxPacketSize = 64, 

    65 		};

    66 		

    67 	TWritingState iWritingState;

    68 	TPtrC8 iFirstPortion;

    69 	TPtrC8 iSecondPortion;

    70 	};

    71 

    72 #endif // __ACTIVEWRITER_H__