internal override void FinalizeCreation()
{
_bitmapInit.EnsureInitializedComplete();
BitmapSourceSafeMILHandle wicClipper = null;
Int32Rect rect = SourceRect;
BitmapSource source = Source;
if (rect.IsEmpty)
{
rect.Width = source.PixelWidth;
rect.Height = source.PixelHeight;
}
using (FactoryMaker factoryMaker = new FactoryMaker())
{
try
{
IntPtr wicFactory = factoryMaker.ImagingFactoryPtr;
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapClipper(
wicFactory,
out wicClipper));
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapClipper.Initialize(
wicClipper,
source.WicSourceHandle,
ref rect));
}
//
// This is just a link in a BitmapSource chain. The memory is being used by
// the BitmapSource at the end of the chain, so no memory pressure needs
// to be added here.
//
WicSourceHandle = wicClipper;
_isSourceCached = source.IsSourceCached;
wicClipper = null;
}
catch
{
_bitmapInit.Reset();
throw;
}
finally
{
if (wicClipper != null)
{
wicClipper.Close();
}
}
}
CreationCompleted = true;
UpdateCachedSettings();
}
internal override void FinalizeCreation()
{
_bitmapInit.EnsureInitializedComplete();
BitmapSourceSafeMILHandle wicFormatter = null;
using (FactoryMaker factoryMaker = new FactoryMaker())
{
try
{
IntPtr wicFactory = factoryMaker.ImagingFactoryPtr;
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateFormatConverter(
wicFactory,
out wicFormatter));
SafeMILHandle internalPalette;
if (DestinationPalette != null)
{
internalPalette = DestinationPalette.InternalPalette;
}
else
{
internalPalette = new SafeMILHandle();
}
Guid format = DestinationFormat.Guid;
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICFormatConverter.Initialize(
wicFormatter,
Source.WicSourceHandle,
ref format,
DitherType.DitherTypeErrorDiffusion,
internalPalette,
AlphaThreshold,
WICPaletteType.WICPaletteTypeOptimal
));
}
//
// This is just a link in a BitmapSource chain. The memory is being used by
// the BitmapSource at the end of the chain, so no memory pressure needs
// to be added here.
//
WicSourceHandle = wicFormatter;
// Even if our source is cached, format conversion is expensive and so we'll
// always maintain our own cache for the purpose of rendering.
_isSourceCached = false;
}
catch
{
_bitmapInit.Reset();
throw;
}
finally
{
if (wicFormatter != null)
{
wicFormatter.Close();
}
}
}
CreationCompleted = true;
UpdateCachedSettings();
}
