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// Copyright (c) 2007-2009 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 the License "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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@file
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@internalComponent
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*/
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#ifndef USBTRANSFERSTRATEGY_H
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#define USBTRANSFERSTRATEGY_H
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#include <e32std.h>
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#include <d32usbtransfers.h>
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NONSHARABLE_CLASS(RUsbTransferStrategy)
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{
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public:
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virtual void Close();
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virtual TInt RegisterTransferDescriptor(RUsbTransferDescriptor& aTransferDesc, TInt aRequiredSize, TUint aStartAlignment, TInt aRequiredMaxPackets) =0;
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virtual void ResetTransferDescriptors() =0;
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virtual TInt InitialiseTransferDescriptors(RUsbInterface& aInterface) =0;
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public: // Interrupt transfer descriptor methods
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virtual TPtr8 IntrWritableBuffer(TInt aHandle) =0;
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virtual void IntrSaveData(TInt aHandle, TInt aLength) =0;
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virtual void IntrSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0;
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virtual TPtrC8 IntrBuffer(TInt aHandle) const =0;
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public: // Bulk transfer descriptor methods
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virtual TPtr8 BulkWritableBuffer(TInt aHandle) =0;
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virtual void BulkSaveData(TInt aHandle, TInt aLength) =0;
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virtual void BulkSetZlpStatus(TInt aHandle, RUsbTransferDescriptor::TZlpStatus aZlpStatus) =0;
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virtual TPtrC8 BulkBuffer(TInt aHandle) const =0;
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public: // Isochronous transfer descriptor methods
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virtual void IsocReset(TInt aHandle) =0;
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virtual TPacketLengths IsocLengths(TInt aHandle) =0;
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virtual TPacketResults IsocResults(TInt aHandle) =0;
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virtual TInt IsocMaxPacketSize(TInt aHandle) =0;
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virtual TPtr8 IsocWritablePackets(TInt aHandle, TInt aWriteHandle, TInt aNumPacketsRequested, TInt& aMaxNumPacketsAbleToWrite) =0;
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virtual TInt IsocSaveMultiple(TInt aHandle, TInt aWriteHandle, TInt aNumOfPackets) =0;
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virtual TPtrC8 IsocPackets(TInt aHandle, TInt aFirstPacketIndex, TInt aNumPacketsRequested, TInt& aNumPacketsReturned) const =0;
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virtual void IsocReceivePackets(TInt aHandle, TInt aNumOfPackets) =0;
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protected:
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void SetTransferHandle(RUsbTransferDescriptor& aTransfer, TInt aHandle) const;
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};
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#endif // USBTRANSFERSTRATEGY_H
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