91 // -----------------------------------------------------------------------------

    92 // CProfileMmfInfoUtility::IsHeaderDataSupportedL

    93 // -----------------------------------------------------------------------------

    94 //

    95 TBool ProfileMmfInfoUtility::IsHeaderDataSupportedL( const TDesC& aFileName )

    96 	{

    97 	TBool result( EFalse );

    98 	//the max header length is 256 bytes

    99 	const TInt KMaxHeaderLength( 256 );

   100 	HBufC8* header = HBufC8::NewLC( KMaxHeaderLength );

   101 	TPtr8 headerPtr = header->Des();

   102 	GetFileHeaderDataL( aFileName, headerPtr, KMaxHeaderLength );

   103 	CMMFFormatSelectionParameters* formatPrms =

   104 			CMMFFormatSelectionParameters::NewLC();

   105 	CMMFControllerPluginSelectionParameters* controllerPrms =

   106 			CMMFControllerPluginSelectionParameters::NewLC();

   107 

   108 	// Empty format parameters means: "get all the supported formats"

   109 	controllerPrms->SetRequiredPlayFormatSupportL( *formatPrms );

   110 	RMMFControllerImplInfoArray cntrlArray;

   111 	controllerPrms->ListImplementationsL( cntrlArray );

   112 

   113 	for ( TInt i( cntrlArray.Count() - 1 ); i >= 0 && !result; --i )

   114 		{

   115 		const RMMFFormatImplInfoArray& infoArray( cntrlArray[i]->PlayFormats() );

   116 

   117 		for ( TInt j(infoArray.Count() - 1); j >= 0; --j )

   118 			{

   119 			if ( infoArray[j]->SupportsHeaderDataL( *header ) )

   120 				{

   121 				result = ETrue;

   122 				break;

   123 				}

   124 			}

   125 		}

   126 

   127 	cntrlArray.ResetAndDestroy();

   128 	cntrlArray.Close();

   129 	CleanupStack::PopAndDestroy( 3, header );//controllerPrms, formatPrms and header

   130 

   131 	return result;

   132 	}

   133 

   134 // -----------------------------------------------------------------------------

   135 // CProfileMmfInfoUtility::GetFileHeaderDataL

   136 // -----------------------------------------------------------------------------

   137 //

   138 void ProfileMmfInfoUtility::GetFileHeaderDataL( const TDesC& aFileName,

   139 		TDes8& aHeaderData, TInt aMaxHeaderLength )

   140 	{

   141 	TInt error = KErrNone;

   142 	using namespace ContentAccess;

   143 	TVirtualPathPtr path( aFileName, ContentAccess::KDefaultContentObject );

   144 	CData* data = CData::NewLC( path, EContentShareReadWrite );

   145 	TInt size = 0;

   146 	data->DataSizeL( size );

   147 	if ( size > 0 )

   148 		{

   149 		if ( size > aMaxHeaderLength )

   150 			size = aMaxHeaderLength;

   151 		TInt pos = 0;

   152 		error = data->Seek( ESeekStart, pos );

   153 		error = data->Read( aHeaderData, size );

   154 		}

   155 	CleanupStack::PopAndDestroy(); // data

   156 	}

   157