diff -r 000000000000 -r c9bc50fca66e usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/src/RequestHeader.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/src/RequestHeader.cpp	Tue Feb 02 02:02:59 2010 +0200
@@ -0,0 +1,75 @@
+/*
+* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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.
+*
+* Contributors:
+*
+* Description:
+*
+*/
+
+#include "RequestHeader.h"
+
+const TDesC8& TUsbRequestHdr::Des()
+/**
+ * This function packs the TUsbRequestHdr class into a descriptor with the
+ * correct byte alignment for transmission on the USB bus.
+ *
+ * @return Correctly-aligned buffer. NB The buffer returned is a member of 
+ * this class and has the same lifetime.
+ */
+	{
+	iBuffer.SetLength(KUsbRequestHdrSize);
+
+	iBuffer[0] = iRequestType;
+	iBuffer[1] = iRequest;
+	iBuffer[2] = static_cast<TUint8>(iValue & 0x00ff);
+	iBuffer[3] = static_cast<TUint8>((iValue & 0xff00) >> 8);
+	iBuffer[4] = static_cast<TUint8>(iIndex & 0x00ff);
+	iBuffer[5] = static_cast<TUint8>((iIndex & 0xff00) >> 8);
+	iBuffer[6] = static_cast<TUint8>(iLength & 0x00ff);
+	iBuffer[7] = static_cast<TUint8>((iLength & 0xff00) >> 8);
+
+	return iBuffer;
+	}
+
+TInt TUsbRequestHdr::Decode(const TDesC8& aBuffer, TUsbRequestHdr& aTarget)
+/**
+ * This function unpacks into the TUsbRequestHdr class from a descriptor with 
+ * the alignment that would be introduced on the USB bus.
+ *
+ * @param aBuffer Input buffer
+ * @param aTarget Unpacked header.
+ * @return Error.
+ */
+	{
+	if (aBuffer.Length() < static_cast<TInt>(KUsbRequestHdrSize))
+		return KErrGeneral;
+
+	aTarget.iRequestType = aBuffer[0];
+	aTarget.iRequest = aBuffer[1];
+	aTarget.iValue	 = static_cast<TUint16>(aBuffer[2] + (aBuffer[3] << 8));
+	aTarget.iIndex	 = static_cast<TUint16>(aBuffer[4] + (aBuffer[5] << 8));
+	aTarget.iLength  = static_cast<TUint16>(aBuffer[6] + (aBuffer[7] << 8));
+	return KErrNone;
+	}
+
+TBool TUsbRequestHdr::IsDataResponseRequired() const
+/**
+ * This function determines whether data is required by the host in response 
+ * to a message header.
+ * @return TBool	Flag indicating whether a data response required.
+ */
+	{
+	return (iRequestType & 0x80) ? ETrue : EFalse;
+	}
+
+//
+// End of file