1 // Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

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

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 //

    15 

    16 /**

    17  @file

    18  @internalComponent

    19 */

    20 

    21 #ifndef USBTRANSFERSTRATEGY_H

    22 #define USBTRANSFERSTRATEGY_H

    23 

    24 #include <e32std.h>

    25 #include <d32usbtransfers.h>

    26 

    27 

    28 NONSHARABLE_CLASS(RUsbTransferStrategy)

    29 	{

    30 public:

    31 	virtual void Close();

    32 

    33 	virtual TInt RegisterTransferDescriptor(RUsbTransferDescriptor& aTransferDesc, TInt aRequiredSize, TUint aStartAlignment, TInt aRequiredMaxPackets) =0;

    34 	virtual void ResetTransferDescriptors() =0;

    35 	virtual TInt InitialiseTransferDescriptors(RUsbInterface& aInterface) =0;

    36 

    37 public: // Interrupt transfer descriptor methods

    38 	virtual TPtr8	IntrWritableBuffer(TInt aHandle) =0;

    39 	virtual void	IntrSaveData(TInt aHandle, TInt aLength) =0;

    40 	virtual void	IntrSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0;

    41 	virtual TPtrC8	IntrBuffer(TInt aHandle) const =0;

    42 

    43 public: // Bulk transfer descriptor methods

    44 	virtual TPtr8	BulkWritableBuffer(TInt aHandle) =0;

    45 	virtual void	BulkSaveData(TInt aHandle, TInt aLength) =0;

    46 	virtual void	BulkSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0;

    47 	virtual TPtrC8	BulkBuffer(TInt aHandle) const =0;

    48 

    49 public: // Isochronous transfer descriptor methods

    50 	virtual void	IsocReset(TInt aHandle) =0;

    51 	virtual TPacketLengths IsocLengths(TInt aHandle) =0;

    52 	virtual TPacketResults IsocResults(TInt aHandle) =0;

    53 	virtual TInt	IsocMaxPacketSize(TInt aHandle) =0;

    54 	virtual TPtr8	IsocWritablePackets(TInt aHandle, TInt aWriteHandle, TInt aNumPacketsRequested, TInt& aMaxNumPacketsAbleToWrite) =0;

    55 	virtual TInt	IsocSaveMultiple(TInt aHandle, TInt aWriteHandle, TInt aNumOfPackets) =0;

    56 	virtual TPtrC8	IsocPackets(TInt aHandle, TInt aFirstPacketIndex, TInt aNumPacketsRequested, TInt& aNumPacketsReturned) const =0;

    57 	virtual void	IsocReceivePackets(TInt aHandle, TInt aNumOfPackets) =0;

    58 

    59 protected:

    60 	void SetTransferHandle(RUsbTransferDescriptor& aTransfer, TInt aHandle) const;

    61 	};

    62 

    63 

    64 #endif // USBTRANSFERSTRATEGY_H