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

// All rights reserved.

// This component and the accompanying materials are made available

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

// which accompanies this distribution, and is available

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

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Description:

//

/**

 @file

 @internalComponent

*/

template<typename XReturnType, TInt XFieldOffset>

inline XReturnType& Field(TAddrType aBase, TInt aHeaderOffset)

	{

	TInt offset = aHeaderOffset + XFieldOffset;

	return *reinterpret_cast<XReturnType*>(aBase + offset);

	}

//

// UsbZeroCopyChunkHeaderBase

//

inline RUsbTransferDescriptor::TTransferType& UsbZeroCopyChunkHeaderBase::TransferType(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<RUsbTransferDescriptor::TTransferType, ETransferType>(aBase, aHeaderOffset);

	}

//

// UsbZeroCopyBulkIntrChunkHeader

//

inline TInt UsbZeroCopyBulkIntrChunkHeader::HeaderSize()

	{

	__ASSERT_COMPILE(EHeaderSize % sizeof(TInt) == 0);

	return EHeaderSize;

	}

inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EDataOffset>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataLength(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EDataLength>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyBulkIntrChunkHeader::DataMaxLength(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EDataMaxLength>(aBase, aHeaderOffset);

	}

inline RUsbTransferDescriptor::TZlpStatus& UsbZeroCopyBulkIntrChunkHeader::ZlpStatus(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<RUsbTransferDescriptor::TZlpStatus, EZlpStatus>(aBase, aHeaderOffset);

	}

//

// UsbZeroCopyIsocChunkHeader

//

inline TInt UsbZeroCopyIsocChunkHeader::HeaderSize()

	{

	__ASSERT_COMPILE(EHeaderSize % sizeof(TInt) == 0);

	return EHeaderSize;

	}

inline TInt& UsbZeroCopyIsocChunkHeader::FirstElementOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EFirstElementOffset>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkHeader::MaxNumPackets(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EMaxNumPackets>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkHeader::MaxPacketSize(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EMaxPacketSize>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkHeader::LengthsOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, ELengthsOffset>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkHeader::ReqLenOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EReqLenOffset>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkHeader::ResultsOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EResultsOffset>(aBase, aHeaderOffset);

	}

//

// UsbZeroCopyIsocChunkHeader

//

inline TInt UsbZeroCopyIsocChunkElement::ElementSize()

	{

	__ASSERT_COMPILE(EElementSize % sizeof(TInt) == 0);

	return EElementSize;

	}

inline TInt& UsbZeroCopyIsocChunkElement::DataOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, EDataOffset>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkElement::NumPackets(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, ENumPackets>(aBase, aHeaderOffset);

	}

inline TInt& UsbZeroCopyIsocChunkElement::NextElementOffset(TAddrType aBase, TInt aHeaderOffset)

	{

	return Field<TInt, ENextElementOffset>(aBase, aHeaderOffset);

	}