--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vtprotocolplugins/DisplaySink/src/CVtImageScalerImpl.cpp	Mon Nov 23 14:47:47 2009 +0200
@@ -0,0 +1,157 @@
+/*
+* Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  Image Transforms subsystem.
+*
+*/
+
+
+// INCLUDE FILES
+
+#include <e32svr.h>
+#include <fbs.h>
+
+#include "CVtImageScalerImpl.h"
+#include "cvtimage.h"
+#include "CVtImageBitmap.h"
+
+// MACROS
+
+#ifdef _DEBUG
+    #include <e32debug.h>
+    #define PRINT RDebug::Print
+    #define _IFDBG(a) a
+#else
+    #define PRINT
+    #define _IFDBG(a)
+#endif
+
+
+// ============================ MEMBER FUNCTIONS ===============================
+
+// ========================== CVtImageScalerImpl ==============================
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::CVtImageScalerImpl()
+// -----------------------------------------------------------------------------
+CVtImageScalerImpl::CVtImageScalerImpl() : CActive( EPriorityStandard )
+    {
+    _IFDBG(PRINT( _L("ScaleImpl.Ctor<") ));
+    CActiveScheduler::Add( this );
+    _IFDBG(PRINT( _L("ScaleImpl.Ctor>") ));
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::~CVtImageScalerImpl()
+// -----------------------------------------------------------------------------
+CVtImageScalerImpl::~CVtImageScalerImpl()
+    {
+    _IFDBG(PRINT( _L("ScaleImpl.~<") ));
+    Cancel();
+    delete iScaler;
+    _IFDBG(PRINT( _L("ScaleImpl.~>") ));
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::SetSourceTargetL(
+//  const CVtImage& aSource, CVtImage& aTarget )
+// -----------------------------------------------------------------------------
+void CVtImageScalerImpl::SetSourceTargetL(
+    const CVtImage& aSource,
+    CVtImage& aTarget )
+    {
+    iSource = iTarget = 0;
+    LeaveIfNotValidSizeL( aSource.Size(), TSize( 2, 2 ) );
+    LeaveIfNotValidSizeL( aTarget.Size() );
+    ValidateSourceTargetL( aSource, aTarget );
+    iSource = &aSource;
+    iTarget = &aTarget;
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::NeedHeapLock() const
+// -----------------------------------------------------------------------------
+TBool CVtImageScalerImpl::NeedHeapLock() const
+    {
+    return iSource->NeedHeapLock() || iTarget->NeedHeapLock();
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::ScaleWithBitmapScalerL()
+// -----------------------------------------------------------------------------
+void CVtImageScalerImpl::ScaleWithBitmapScalerL(
+    const CBitmapScaler::TQualityAlgorithm
+#ifdef _DEBUG
+    aQuality
+#endif // _DEBUG
+     )
+    {
+    _IFDBG(PRINT( _L("ScaleImpl.ScaleWithBitmapScalerL<") ));
+    if ( IsActive() || iActiveSchedulerWait.IsStarted() )
+        {
+        _IFDBG(PRINT( _L("ScaleImpl.ScaleWithBitmapScalerL LEAVE KErrInUse>") ));
+        User::Leave( KErrInUse );
+        }
+    _IFDBG(PRINT( _L("ScaleImpl::ScaleWithBitmapScalerL aQuality = %d"), aQuality ));
+    CFbsBitmap& source( static_cast< CVtImageBitmap* >(
+        const_cast< CVtImage* >( iSource ) )->Bitmap() );
+    CFbsBitmap& target( static_cast< CVtImageBitmap* >( iTarget )->Bitmap() );
+    iScaler = CBitmapScaler::NewL();
+    SetActive();
+    iScaler->Scale( &iStatus, source, target, EFalse );
+    iActiveSchedulerWait.Start();
+    delete iScaler; iScaler = NULL;
+    _IFDBG(PRINT( _L("ScaleImpl.ScaleWithBitmapScalerL iStatus.Int() = %d"), iStatus.Int() ));
+    User::LeaveIfError( iStatus.Int() );
+    _IFDBG(PRINT( _L("ScaleImpl.ScaleWithBitmapScalerL>") ));
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::LeaveIfNotValidSizeL(
+//  const TSize& aSize, const TSize aMinSize )
+// -----------------------------------------------------------------------------
+void CVtImageScalerImpl::LeaveIfNotValidSizeL(
+    const TSize& aSize,
+    const TSize aMinSize )
+    {
+    _IFDBG(PRINT( _L("ScaleImpl.LeaveIfNotValidSizeL<") ));
+    if( ( aSize.iWidth < aMinSize.iWidth ) ||
+        ( aSize.iHeight < aMinSize.iHeight ) )
+        {
+        User::Leave( KErrNotSupported );
+        }
+    _IFDBG(PRINT( _L("ScaleImpl.LeaveIfNotValidSizeL>") ));
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::RunL()
+// -----------------------------------------------------------------------------
+void CVtImageScalerImpl::RunL()
+    {
+    _IFDBG(PRINT( _L("CVtImageScalerImpl.RunL") ));
+    iActiveSchedulerWait.AsyncStop();
+    }
+
+// -----------------------------------------------------------------------------
+// CVtImageScalerImpl::RunL()
+// -----------------------------------------------------------------------------
+void CVtImageScalerImpl::DoCancel()
+    {
+    _IFDBG(PRINT( _L("CVtImageScalerImpl.DoCancel") ));
+    iScaler->Cancel();
+    iActiveSchedulerWait.AsyncStop();
+    }
+
+// End of File
+
+