1 mmfutilities.inl

     1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // include\mmf\common\mmfutilities.inl

    15 // 

    16 //

    17 

    18 

    19 

    20 /**

    21  

    22  Constructs the class with the supplied arguments.

    23  

    24  This constructor is used when there are multiple streams of the same media type on the same

    25  MDataSource.

    26  

    27  @param  aMediaType

    28  The media type (video, audio etc.).

    29  @param  aStreamId

    30  Identifies a specific stream when there are multiple streams of the same media type on 

    31  the same MDataSource.

    32 */

    33 inline TMediaId::TMediaId(TUid aMediaType, TUint aStreamId) : iMediaType(aMediaType), iStreamId(aStreamId), iReserved1(0), iReserved2(0), iReserved3(0) 

    34 	{

    35 	}

    36 

    37 /**

    38 Constructs the class with the supplied argument.

    39 	

    40 This constructor is used when there is a single stream of the same media type on the same

    41 MDataSource.

    42 

    43 @param  aMediaType

    44         The media type (video, audio etc.).

    45 */

    46 inline TMediaId::TMediaId(TUid aMediaType) : iMediaType(aMediaType), iStreamId(0), iReserved1(0), iReserved2(0), iReserved3(0) 

    47 	{

    48 	}

    49 

    50 /**

    51 Default constructor.

    52 */

    53 inline TMediaId::TMediaId() : iMediaType(KNullUid), iStreamId(0), iReserved1(0), iReserved2(0), iReserved3(0) 

    54 	{

    55 	}

    56 

    57 /**

    58 Unpacks the FourCC code in little-endian format into the space provided by the argument.

    59 

    60 The argument must be a pointer to a buffer of 4 bytes or greater.

    61 

    62 @param aDes

    63        A buffer to hold the unpacked FourCC code.

    64 */

    65 inline void TFourCC::FourCC( TPtr8* aDes ) const

    66 	{

    67 	TUint8 char1 = TUint8( iFourCC ) ;

    68 	TUint8 char2 = TUint8( iFourCC >> 8 ) ;

    69 	TUint8 char3 = TUint8( iFourCC >> 16 ) ;

    70 	TUint8 char4 = TUint8( iFourCC >> 24 ) ;

    71 

    72 	aDes->Format( _L8("%1c%1c%1c%1c"), char1, char2, char3, char4 ) ;

    73 	}