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