CFbsBitmap* AknBitmapMirrorUtils::CreateBitmapOptimizedL(CFbsBitmap* aSourceBitmap, TInt aMirrorDirection)
{
// Check if displaymode is optimized, fallback to non-optimized version if not.
TBool fallback = ETrue;
TDisplayMode displayMode = aSourceBitmap->DisplayMode();
switch( displayMode )
{
case EGray256:
case EColor256:
case EColor4K:
case EColor64K:
fallback = EFalse;
break;
default:
fallback = ETrue;
}
// Check if mirroring mode is supported, fallback to non-optimized version if not.
if ((aMirrorDirection != EAknVerticalMirroring) && (aMirrorDirection != EAknHorizontalMirroring))
{
fallback = ETrue;
}
if( fallback )
return CreateBitmapL(aSourceBitmap, aMirrorDirection);
// Prepare destination bitmap
User::LeaveIfNull(aSourceBitmap);
CFbsBitmap* destinationBitmap = new (ELeave) CFbsBitmap();
CleanupStack::PushL(destinationBitmap);
TSize sourceBitmapSize = aSourceBitmap->SizeInPixels();
TRect sourceRect = TRect(TPoint(0,0), sourceBitmapSize);
TSize destinationBitmapSize(sourceRect.Width(), sourceRect.Height());
User::LeaveIfError(destinationBitmap->Create(destinationBitmapSize, aSourceBitmap->DisplayMode()));
// Check source, if rom bitmap or compressed then create uncompressed ram bitmap
TBool srcTemporary = EFalse;
if( aSourceBitmap->IsRomBitmap() )
{
srcTemporary = ETrue;
}
// Heap lock for FBServ large chunk to prevent background
// compression of aSrcBitmap after if IsCompressedInRAM returns EFalse
aSourceBitmap->LockHeapLC( ETrue ); // fbsheaplock
TBool fbsHeapLock = ETrue;
if( aSourceBitmap->IsCompressedInRAM() )
{
srcTemporary = ETrue;
}
if( aSourceBitmap->ExtendedBitmapType() != KNullUid )
{
srcTemporary = ETrue;
}
CFbsBitmap* realSource = aSourceBitmap;
if( srcTemporary )
{
CleanupStack::PopAndDestroy(); // fbsheaplock
fbsHeapLock = EFalse;
realSource = new (ELeave) CFbsBitmap();
CleanupStack::PushL( realSource );
User::LeaveIfError( realSource->Create( sourceBitmapSize, aSourceBitmap->DisplayMode() ) );
CFbsBitmapDevice* dev = CFbsBitmapDevice::NewL( realSource );
CleanupStack::PushL( dev );
CFbsBitGc* gc = NULL;
User::LeaveIfError( dev->CreateContext( gc ) );
CleanupStack::PushL( gc );
gc->BitBlt( TPoint(0,0), aSourceBitmap );
CleanupStack::PopAndDestroy(2); // dev, gc
}
// Heap lock for FBServ large chunk is only needed with large bitmaps.
if (!fbsHeapLock)
{
if ( realSource->IsLargeBitmap() || destinationBitmap->IsLargeBitmap() )
{
destinationBitmap->LockHeapLC( ETrue ); // fbsheaplock
}
else
{
CleanupStack::PushL( (TAny*)NULL );
}
}
TUint32* srcAddress = realSource->DataAddress();
TUint32* trgAddress = destinationBitmap->DataAddress();
if ( displayMode == EColor4K || displayMode == EColor64K )
{
TInt srcScanLen16 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode) / 2;
TInt trgScanLen16 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode) / 2;
TInt srcScanLen32 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode) / 4;
TInt trgScanLen32 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode) / 4;
switch (aMirrorDirection)
{
case EAknVerticalMirroring:
{
TUint32* trgAddress32 = trgAddress;
TUint32* srcAddress32 = srcAddress;
TInt trgPos = 0;
for ( TInt yPos=destinationBitmapSize.iHeight-1; yPos >= 0; yPos-- )
{
srcAddress32 = srcAddress + srcScanLen32*yPos;
trgAddress32 = trgAddress + trgScanLen32*trgPos;
memcpy(trgAddress32, srcAddress32, srcScanLen32*4);
trgPos++;
}
break;
}
case EAknHorizontalMirroring:
{
TUint16* trgAddress16 = reinterpret_cast<TUint16*>(trgAddress);
TUint16* srcAddress16 = reinterpret_cast<TUint16*>(srcAddress);
TInt xTrgPos = 0;
for ( TInt yPos=destinationBitmapSize.iHeight-1; yPos >= 0; yPos-- )
{
xTrgPos = 0;
for ( TInt xPos=destinationBitmapSize.iWidth-1; xPos >= 0; xPos-- )
{
trgAddress16[xTrgPos] = srcAddress16[xPos];
xTrgPos++;
}
srcAddress16 += srcScanLen16;
trgAddress16 += trgScanLen16;
}
break;
}
default:
{
break;
}
}
}
else if( (displayMode==EGray256) || (displayMode==EColor256) )
{
TInt srcScanLen8 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode);
TInt trgScanLen8 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode);
TInt srcScanLen32 = CFbsBitmap::ScanLineLength(sourceBitmapSize.iWidth, displayMode) / 4;
TInt trgScanLen32 = CFbsBitmap::ScanLineLength(destinationBitmapSize.iWidth, displayMode) / 4;
switch (aMirrorDirection)
{
case EAknVerticalMirroring:
{
TUint32* trgAddress32 = trgAddress;
TUint32* srcAddress32 = srcAddress;
TInt trgPos = 0;
for ( TInt yPos=destinationBitmapSize.iHeight-1; yPos >= 0; yPos-- )
{
srcAddress32 = srcAddress + srcScanLen32*yPos;
trgAddress32 = trgAddress + trgScanLen32*trgPos;
memcpy(trgAddress32, srcAddress32, srcScanLen32*4);
trgPos++;
}
break;
}
case EAknHorizontalMirroring:
{
TUint8* trgAddress8 = reinterpret_cast<TUint8*>(trgAddress);
TUint8* srcAddress8 = reinterpret_cast<TUint8*>(srcAddress);
TInt xTrgPos = 0;
for ( TInt yPos=destinationBitmapSize.iHeight-1; yPos >= 0; yPos-- )
{
xTrgPos = 0;
for ( TInt xPos=destinationBitmapSize.iWidth-1; xPos >= 0; xPos-- )
{
trgAddress8[xTrgPos] = srcAddress8[xPos];
xTrgPos++;
}
srcAddress8 += srcScanLen8;
trgAddress8 += trgScanLen8;
}
break;
}
default:
{
break;
}
}
}
CleanupStack::PopAndDestroy(); // fbsheaplock
if( srcTemporary )
{
CleanupStack::PopAndDestroy(); // realSource
}
CleanupStack::Pop(); // destinationBitmap
return destinationBitmap;
}
