williamr@2: // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
williamr@2: // All rights reserved.
williamr@2: // This component and the accompanying materials are made available
williamr@4: // under the terms of "Eclipse Public License v1.0"
williamr@2: // which accompanies this distribution, and is available
williamr@4: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
williamr@2: //
williamr@2: // Initial Contributors:
williamr@2: // Nokia Corporation - initial contribution.
williamr@2: //
williamr@2: // Contributors:
williamr@2: //
williamr@2: // Description:
williamr@2: // include\mmf\common\mmfutilities.inl
williamr@2: // 
williamr@2: //
williamr@2: 
williamr@2: /**
williamr@2:  
williamr@2:  Constructs the class with the supplied arguments.
williamr@2:  
williamr@2:  This constructor is used when there are multiple streams of the same media type on the same
williamr@2:  MDataSource.
williamr@2:  
williamr@2:  @param  aMediaType
williamr@2:  The media type (video, audio etc.).
williamr@2:  @param  aStreamId
williamr@2:  Identifies a specific stream when there are multiple streams of the same media type on 
williamr@2:  the same MDataSource.
williamr@2: */
williamr@2: inline TMediaId::TMediaId(TUid aMediaType, TUint aStreamId) : iMediaType(aMediaType), iStreamId(aStreamId), iReserved1(0), iReserved2(0), iReserved3(0) 
williamr@2: 	{
williamr@2: 	}
williamr@2: 
williamr@2: /**
williamr@2: Constructs the class with the supplied argument.
williamr@2: 	
williamr@2: This constructor is used when there is a single stream of the same media type on the same
williamr@2: MDataSource.
williamr@2: 
williamr@2: @param  aMediaType
williamr@2:         The media type (video, audio etc.).
williamr@2: */
williamr@2: inline TMediaId::TMediaId(TUid aMediaType) : iMediaType(aMediaType), iStreamId(0), iReserved1(0), iReserved2(0), iReserved3(0) 
williamr@2: 	{
williamr@2: 	}
williamr@2: 
williamr@2: /**
williamr@2: Default constructor.
williamr@2: */
williamr@2: inline TMediaId::TMediaId() : iMediaType(KNullUid), iStreamId(0), iReserved1(0), iReserved2(0), iReserved3(0) 
williamr@2: 	{
williamr@2: 	}
williamr@2: 
williamr@2: /**
williamr@2: Unpacks the FourCC code in little-endian format into the space provided by the argument.
williamr@2: 
williamr@2: The argument must be a pointer to a buffer of 4 bytes or greater.
williamr@2: 
williamr@2: @param aDes
williamr@2:        A buffer to hold the unpacked FourCC code.
williamr@2: */
williamr@2: inline void TFourCC::FourCC( TPtr8* aDes ) const
williamr@2: 	{
williamr@2: 	TUint8 char1 = TUint8( iFourCC ) ;
williamr@2: 	TUint8 char2 = TUint8( iFourCC >> 8 ) ;
williamr@2: 	TUint8 char3 = TUint8( iFourCC >> 16 ) ;
williamr@2: 	TUint8 char4 = TUint8( iFourCC >> 24 ) ;
williamr@2: 
williamr@2: 	aDes->Format( _L8("%1c%1c%1c%1c"), char1, char2, char3, char4 ) ;
williamr@2: 	}
williamr@4: