usbmgmt/usbmgr/device/classdrivers/acm/classimplementation/ecacm/src/ClassDescriptor.cpp
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/*
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* Copyright (c) 1997-2010 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 "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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#include "ClassDescriptor.h"
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#include "AcmPanic.h"
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#include "OstTraceDefinitions.h"
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#ifdef OST_TRACE_COMPILER_IN_USE
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#include "ClassDescriptorTraces.h"
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#endif
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TDes8& TUsbCsClassDescriptor::Des()
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/**
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 * This function packs the TUsbCsClassDescriptor class into a descriptor with 
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 * the correct byte alignment for transmission on the USB bus.
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 *
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 * @return Correctly-aligned buffer. NB The buffer returned is a member of 
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 * this class and has the same lifetime.
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 */
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	{
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	OstTraceFunctionEntry0( TUSBCSCLASSDESCRIPTOR_DES_ENTRY );
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	TUint index = 0;
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	iBuffer.SetLength(KUsbClassSpecificBufferSize);
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	iBuffer[index++] = iHdrSize;
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	iBuffer[index++] = iHdrType;
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	iBuffer[index++] = iHdrSubType;
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	iBuffer[index++] = (TUint8) ( iHdrBcdCDC & 0x00ff);
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	iBuffer[index++] = (TUint8) ((iHdrBcdCDC & 0xff00) >> 8);
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	iBuffer[index++] = iAcmSize;
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	iBuffer[index++] = iAcmType;
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	iBuffer[index++] = iAcmSubType;
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	iBuffer[index++] = iAcmCapabilities;
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	iBuffer[index++] = iUnSize;
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	iBuffer[index++] = iUnType;
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	iBuffer[index++] = iUnSubType;
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	iBuffer[index++] = iUnMasterInterface;
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	iBuffer[index++] = iUnSlaveInterface;
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#if defined(DISABLE_ACM_CF_COUNTRY_SETTING)
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	// no functional descriptor needed
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#elif defined(ENABLE_ACM_CF_COUNTRY_SETTING)
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	// CDC Country Selection Functional Descriptor
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	iBuffer[index++] = iCsSize;
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	iBuffer[index++] = iCsType;
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	iBuffer[index++] = iCsSubType;
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	iBuffer[index++] = iCsRelDate;
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	for ( TUint scan = 0 ; scan < KUsbCommNumCountries ; scan++ )
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		{
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		iBuffer[index++] = (TUint8) (iCsCountryCode[scan] & 0x00ff);
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		iBuffer[index++] = (TUint8) ((iCsCountryCode[scan] & 0xff00) >> 8);
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		}
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#endif
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	if (index != KUsbClassSpecificBufferSize)
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		{
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		OstTrace1( TRACE_FATAL, TUSBCSCLASSDESCRIPTOR_DES, "TUsbCsClassDescriptor::Des;index=%d", (TInt)index );
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		__ASSERT_DEBUG( EFalse, User::Panic(KAcmPanicCat, EPanicInternalError) );
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		}
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	OstTraceFunctionExit0( TUSBCSCLASSDESCRIPTOR_DES_EXIT );
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	return iBuffer;
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	}
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//
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// End of file