author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Wed, 18 Aug 2010 10:42:04 +0300 | |
changeset 27 | 226a2340cdd3 |
permissions | -rw-r--r-- |
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/** |
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* Copyright (c) 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: CUpnpSvgImageConverter class implementation. |
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* |
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*/ |
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|
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#include "upnpsvgimageconverter.h" |
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#include "upnptmserverimpl.h" |
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#include <f32file.h> |
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#include "upnpiconconversionactive.h" |
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#include "OstTraceDefinitions.h" |
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#ifdef OST_TRACE_COMPILER_IN_USE |
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#include "upnpsvgimageconverterTraces.h" |
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#endif |
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// Literals |
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_LIT(KLatin, "LatinPlain12"); |
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_LIT(KConvertedIconPath, "public\\TmServerDevice1\\"); |
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_LIT(KCross, "x"); |
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_LIT(KDotBmp, ".bmp"); |
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_LIT(KThreadName, "ImageConverterThread"); |
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_LIT(KSemaphoreName, "ImageConverterSemaphore"); |
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// Constant |
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const TUint KDot = '.'; |
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|
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// ============================ MEMBER FUNCTIONS =================================== |
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|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::NewL |
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// Two-phased constructor. |
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// @param aIconWidth Desired width of the serving icon. |
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// @param aIconHeight Desired height of the serving icon. |
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// --------------------------------------------------------------------------------- |
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// |
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CUpnpSvgImageConverter* CUpnpSvgImageConverter::NewL( TInt aIconWidth, TInt aIconHeight ) |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_NEWL_ENTRY ); |
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OstTraceExt2( TRACE_NORMAL, CUPNPSVGIMAGECONVERTER_NEWL, "CUpnpSvgImageConverter::NewL;aIconWidth=%d;aIconHeight=%d", aIconWidth, aIconHeight ); |
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CUpnpSvgImageConverter* self = new (ELeave) CUpnpSvgImageConverter( ); |
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CleanupStack::PushL(self); |
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self->ConstructL( aIconWidth,aIconHeight ); |
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CleanupStack::Pop(self); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_NEWL_EXIT ); |
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return self; |
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} |
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::CUpnpSvgImageConverter |
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// C++ default constructor can NOT contain any code, that might leave. |
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// --------------------------------------------------------------------------------- |
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// |
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CUpnpSvgImageConverter::CUpnpSvgImageConverter( ) |
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{ |
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} |
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::ConstructL |
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// Symbian 2nd phase constructor can leave. |
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// --------------------------------------------------------------------------------- |
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// |
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void CUpnpSvgImageConverter::ConstructL( TInt aIconWidth, TInt aIconHeight ) |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_CONSTRUCTL_ENTRY ); |
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//Geometric rectangle. |
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TRect lMainRect( 0,0,aIconWidth,aIconHeight ); |
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/** |
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* Specifies the font specification to use for text drawing. |
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* Here "LatinPlain12" of height "10" is used. |
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*/ |
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TFontSpec lFontSpec( KLatin,UpnpString::KMaxTUintLength ); |
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// A bitmap managed by the font and bitmap server. |
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User::LeaveIfError(iFbsSession.Connect()); |
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iBitmap = new ( ELeave ) CFbsBitmap(); |
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iMask = new ( ELeave ) CFbsBitmap(); |
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//Creates bitmap file of the desired dimensions with desired display mode(64,000 colour) |
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User::LeaveIfError( iBitmap->Create( TSize( lMainRect.Width(), |
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lMainRect.Height() ),EColor64K ) ); |
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User::LeaveIfError( iMask->Create( TSize( lMainRect.Width(), |
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lMainRect.Height() ),EGray256 ) ); // 256 grayscales display mode as alpha values |
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/** |
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* Create a new Svg Engine interface. |
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* @param iBitmap bitmap to draw resulting svg image. |
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* @param aReqObserver(NULL) interface for callbacks to retrieve info |
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* only client can provide, such as opening files. |
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* @param lFontSpecFont spec to use for text drawing. |
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*/ |
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iSvgModule = CSvgEngineInterfaceImpl::NewL( iBitmap,NULL,lFontSpec ); |
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User::LeaveIfError( iFileSession.Connect() ); |
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TBuf<UpnpString::KMaxFilenameLength> privatePath; |
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User::LeaveIfError( iFileSession.PrivatePath(privatePath) ); |
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|
104 |
|
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privatePath.Append(KConvertedIconPath()); |
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privatePath.AppendNum( aIconWidth ); |
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privatePath.Append( KCross); |
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privatePath.AppendNum( aIconHeight ); |
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privatePath.Append( UpnpString::KDoubleBackSlash16() ); |
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TInt err = iFileSession.MkDir(privatePath); |
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if( ( err != KErrNone ) && ( err != KErrAlreadyExists ) ) |
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112 |
{ |
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// Leaves if fails to create a directory |
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User::Leave(err); |
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115 |
} |
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iBitMapFilePath.CreateL( UpnpString::KMaxFilenameLength ); |
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iBitMapFilePath.Append( privatePath ); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_CONSTRUCTL_EXIT ); |
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} |
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120 |
|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::~CUpnpSvgImageConverter |
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// Destructor |
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// --------------------------------------------------------------------------------- |
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125 |
// |
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CUpnpSvgImageConverter::~CUpnpSvgImageConverter() |
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127 |
{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_CUPNPSVGIMAGECONVERTER_ENTRY ); |
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iBitMapFilePath.Close(); |
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delete iMask; |
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delete iBitmap; |
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delete iSvgModule; |
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iFbsSession.Disconnect(); |
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iFileSession.Close(); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_CUPNPSVGIMAGECONVERTER_EXIT ); |
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136 |
} |
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137 |
|
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138 |
// ----------------------------------------------------------------------------------- |
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139 |
// CUpnpSvgImageConverter::ConvertToBitmapL |
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// Method invokes svg to bitmap conversion. |
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// It takes svg file as an input and returns converted icon file( bmp ). |
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142 |
// Also prepares DOM for given SVG file. |
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// @param aSvgFile Input svg filepath |
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// @param aBitmapFile[out] Bitmap filepath ( converted file ). |
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145 |
// ----------------------------------------------------------------------------------- |
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146 |
void CUpnpSvgImageConverter::ConvertToBitmapL( const TDesC& aSvgFile, RBuf& aBitmapFile ) |
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147 |
{ |
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148 |
OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_CONVERTTOBITMAPL_ENTRY ); |
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149 |
/** |
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150 |
* Extracts the filename( without filename extension ) from the input svg filepath and |
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* uses the same filename to create bitmap file ( eg: abc.bmp ) |
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152 |
*/ |
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TPtrC iconFileNameWithExtension = aSvgFile.Mid((aSvgFile.LocateReverse(KDirectorySeparator))+1); |
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154 |
iBitMapFilePath.Append( iconFileNameWithExtension.Left(iconFileNameWithExtension.LocateReverse(KDot)) ); |
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155 |
iBitMapFilePath.Append( KDotBmp ); |
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RFile iconFile; |
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157 |
TInt err = iconFile.Create(iFileSession,iBitMapFilePath,EFileRead|EFileWrite|EFileShareAny); |
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158 |
OstTrace1( TRACE_NORMAL, CUPNPSVGIMAGECONVERTER_CONVERTTOBITMAPL, "CUpnpSvgImageConverter::ConvertToBitmapL;err=%d", err ); |
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iconFile.Close(); |
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160 |
aBitmapFile.Close(); |
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161 |
if ( err == KErrAlreadyExists ) |
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162 |
{ |
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163 |
//If the converted file pre-exists, just return the existing filepath. |
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164 |
aBitmapFile.CreateL(iBitMapFilePath); |
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165 |
} |
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166 |
else if ( err == KErrNone ) |
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167 |
{ |
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168 |
TInt domHandle; |
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169 |
/** |
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170 |
* Parses and Prepares DOM for given SVG file. |
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* @param aSvgFile the name of the file to be parsed |
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* @param domHandle Handle to the created DOM. |
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* @return lsvgerr Error object specifying the error occured during operation |
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174 |
*/ |
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175 |
MSvgError* lsvgerr = iSvgModule->PrepareDom( aSvgFile,domHandle ,NULL ); |
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if ( (! lsvgerr ) || ( lsvgerr && lsvgerr->HasError() &&!lsvgerr->IsWarning() ) ) |
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177 |
{ |
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178 |
User::Leave( KErrCancel ); |
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179 |
} |
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180 |
/** |
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*Initialization of the engine |
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*@param domHandle Handle to DOM Tree. |
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*@param iBitmap Buffer for drawing the DOM Tree. |
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*@param iMask Buffer for mask (alpha values) of framebuffer result |
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*@return lsvgerr Error object specifying the error occured. |
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186 |
*/ |
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lsvgerr = iSvgModule->UseDom( domHandle ,iBitmap,iMask ); |
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if ( (! lsvgerr ) || ( lsvgerr && lsvgerr->HasError() &&!lsvgerr->IsWarning() ) ) |
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189 |
{ |
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190 |
User::Leave( KErrCancel ); |
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191 |
} |
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192 |
/** |
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* Request the SVG Engine to begin an animation. |
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194 |
*/ |
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iSvgModule->Start( lsvgerr ); |
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if ( (! lsvgerr ) || ( lsvgerr && lsvgerr->HasError() &&!lsvgerr->IsWarning() ) ) |
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197 |
{ |
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User::Leave( KErrCancel ); |
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199 |
} |
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200 |
/** |
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201 |
* Deletes the DOM tree associated with the Handle. |
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202 |
*/ |
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lsvgerr = iSvgModule->DeleteDom( domHandle ) ; |
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if ( (! lsvgerr ) || ( lsvgerr && lsvgerr->HasError() &&!lsvgerr->IsWarning() ) ) |
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{ |
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User::Leave( KErrCancel ); |
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} |
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/** |
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* Creates and starts a new thread to handle asynchronous icon conversion. |
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* A new or separate thread is needed for this purpose since the conversion happens |
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* in the same thread as of that of the one who invokes. |
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*/ |
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StartThreadL(); |
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// Sets the converted filepath |
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aBitmapFile.CreateL(iBitMapFilePath); |
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} |
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else |
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{ |
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User::Leave(err); |
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} |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_CONVERTTOBITMAPL_EXIT ); |
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} |
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|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::StartThreadL |
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// Creates a new thread where actual conversion occurs. |
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// Also creates a sempahore and waits on it. |
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// --------------------------------------------------------------------------------- |
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// |
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void CUpnpSvgImageConverter::StartThreadL( ) |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_STARTTHREADL_ENTRY ); |
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// Creates and opens a semaphore |
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RSemaphore semaphore; |
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CleanupClosePushL(semaphore); |
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TInt error = semaphore.CreateGlobal( KSemaphoreName, KErrNone ); |
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if ( error == KErrAlreadyExists ) |
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{ |
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User::LeaveIfError(semaphore.OpenGlobal( KSemaphoreName )); |
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} |
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else |
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{ |
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User::LeaveIfError(error); |
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} |
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// Creates a new thread which will be in suspended state after creation |
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RThread thread; |
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CleanupClosePushL(thread); |
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User::LeaveIfError( thread.Create( KThreadName, |
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ImageConverter, |
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KDefaultStackSize, |
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NULL, |
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this, |
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EOwnerProcess)); |
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thread.SetPriority(EPriorityRealTime); |
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//Resumes the newly created thread |
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thread.Resume(); |
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semaphore.Wait(); |
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CleanupStack::PopAndDestroy(2,&semaphore); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_STARTTHREADL_EXIT ); |
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} |
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|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::Filepath |
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// Method to return the path of the icon file which needs to be converted. |
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// @return Returns reference to Bitmap file path. |
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// --------------------------------------------------------------------------------- |
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// |
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const TDesC& CUpnpSvgImageConverter::Filepath( )const |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_FILEPATH_ENTRY ); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_FILEPATH_EXIT ); |
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return iBitMapFilePath; |
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} |
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274 |
|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::BitmapObject |
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// Method to return the bitmap object. |
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// @return Returns reference to Bitmap object. |
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// --------------------------------------------------------------------------------- |
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// |
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CFbsBitmap& CUpnpSvgImageConverter::BitmapObject()const |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_BITMAPOBJECT_ENTRY ); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_BITMAPOBJECT_EXIT ); |
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return *iBitmap; |
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} |
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287 |
|
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::ImageConverter |
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// Static method serving as thread's main function |
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// @param aParam Pointer to any type object. |
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// @return Returns error code |
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// --------------------------------------------------------------------------------- |
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// |
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TInt CUpnpSvgImageConverter::ImageConverter( TAny* aParam ) |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_IMAGECONVERTER_ENTRY ); |
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TInt err( KErrNone ); |
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CUpnpSvgImageConverter* svgConverter = static_cast <CUpnpSvgImageConverter*>( aParam ); |
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// Create cleanupstack |
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CTrapCleanup* cleanupStack = CTrapCleanup::New(); |
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if ( !cleanupStack ) |
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{ |
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err = KErrNoMemory; |
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} |
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306 |
else |
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{ |
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TRAP( err, ImageConverterL(*svgConverter) ); |
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} |
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// Create a matching semaphore for signalling the waiting semaphore |
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RSemaphore semaphoreStop; |
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semaphoreStop.OpenGlobal(KSemaphoreName); |
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semaphoreStop.Signal(); |
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semaphoreStop.Close(); |
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delete cleanupStack; |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_IMAGECONVERTER_EXIT ); |
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return err; |
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} |
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// --------------------------------------------------------------------------------- |
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// CUpnpSvgImageConverter::ImageConverterL |
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// Called from thread's main function. |
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// Contains the code which can leave. |
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// @param aSvgConverter Reference to class object. |
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// --------------------------------------------------------------------------------- |
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// |
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void CUpnpSvgImageConverter::ImageConverterL( CUpnpSvgImageConverter& aSvgConverter ) |
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{ |
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OstTraceFunctionEntry0( CUPNPSVGIMAGECONVERTER_IMAGECONVERTERL_ENTRY ); |
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/** |
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* Add support for active objects |
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* Create and install active scheduler |
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*/ |
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CActiveScheduler* scheduler = new (ELeave) CActiveScheduler; |
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CleanupStack::PushL(scheduler); |
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CActiveScheduler::Install( scheduler ); |
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// Opens the bitmap file and supplies it to the active object |
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RFs fs; |
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CleanupClosePushL( fs ); |
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User::LeaveIfError(fs.Connect()); |
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RFile bitmapFile; |
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CleanupClosePushL( bitmapFile ); |
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User::LeaveIfError( bitmapFile.Open( fs, aSvgConverter.Filepath(), EFileRead|EFileWrite|EFileShareAny )); |
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|
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// Create an active object that is executed in this thread |
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CUpnpIconConversionActive* active = CUpnpIconConversionActive::NewL( bitmapFile ); |
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CleanupStack::PushL(active); |
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// Invoke the request to the active object |
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active->Convert( aSvgConverter.BitmapObject() ); |
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// Thread execution starts |
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CActiveScheduler::Start(); |
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User::LeaveIfError( active->FetchError() ); // Leaves if the status returned is not KErrNone |
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|
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/** |
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* Thread execution ends (waiting for CActiveScheduler::Stop()) |
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* Cleanup the active object and scheduler |
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*/ |
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CleanupStack::PopAndDestroy(UpnpString::KDoubleLineFeedLength,scheduler); |
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OstTraceFunctionExit0( CUPNPSVGIMAGECONVERTER_IMAGECONVERTERL_EXIT ); |
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} |
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|
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// End of File |