public UnmanagedBitmapWrapper(BitmapSourceSafeMILHandle bitmapSource) :
base(true)
{
_bitmapInit.BeginInit();
//
// This constructor is used by BitmapDecoder and BitmapFrameDecode for thumbnails and
// previews. The bitmapSource parameter comes from BitmapSource.CreateCachedBitmap
// which already calculated memory pressure, so there's no need to do it here.
//
WicSourceHandle = bitmapSource;
_bitmapInit.EndInit();
UpdateCachedSettings();
}
static internal InPlaceBitmapMetadataWriter CreateFromFrameDecode(BitmapSourceSafeMILHandle frameHandle, object syncObject)
{
Invariant.Assert(frameHandle != null);
SafeMILHandle /* IWICFastMetadataEncoder */ fmeHandle = null;
SafeMILHandle /* IWICMetadataQueryWriter */ metadataHandle = null;
using (FactoryMaker factoryMaker = new FactoryMaker())
{
lock (syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateFastMetadataEncoderFromFrameDecode(
factoryMaker.ImagingFactoryPtr,
frameHandle,
out fmeHandle));
}
}
HRESULT.Check(UnsafeNativeMethods.WICFastMetadataEncoder.GetMetadataQueryWriter(
fmeHandle,
out metadataHandle));
return new InPlaceBitmapMetadataWriter(fmeHandle, metadataHandle, syncObject);
}
internal static extern int /* HRESULT */ WICConvertBitmapSource(
ref Guid dstPixelFormatGuid,
SafeMILHandle /* IWICBitmapSource */ pISrc,
out BitmapSourceSafeMILHandle /* IWICBitmapSource* */ ppIDst);
internal static extern int /*HRESULT*/ CreateFastMetadataEncoderFromFrameDecode(
IntPtr THIS_PTR,
BitmapSourceSafeMILHandle /* IWICBitmapFrameDecode */ pIFrameDecode,
out SafeMILHandle /* IWICFastMetadataEncoder */ ppIBitmap);
internal static extern int /*HRESULT*/ CreateBitmapFromHICON(
IntPtr THIS_PTR,
IntPtr hIcon,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal static extern void GetBackBuffer(
SafeMILHandle /* CSwDoubleBufferedBitmap */ THIS_PTR,
out BitmapSourceSafeMILHandle /* IWICBitmap */ pBackBuffer,
out uint pBackBufferSize
);
private void EnsureSource()
{
if (_frameSource == null)
{
if (_decoder == null)
{
HRESULT.Check((int)WinCodecErrors.WINCODEC_ERR_NOTINITIALIZED);
}
//
// Its possible that the frame was originally created with a network URI
// and DelayCreation was enabled. In this case, the decoder may not yet
// exist even though the download is complete. The code below creates a
// decoder if one does not exist.
//
if (_decoder.InternalDecoder == null)
{
Debug.Assert(_decoder is LateBoundBitmapDecoder);
Debug.Assert(IsDownloading == false);
_decoder = ((LateBoundBitmapDecoder)_decoder).Decoder;
_syncObject = _decoder.SyncObject;
Debug.Assert(_decoder.InternalDecoder != null);
}
IntPtr frameDecode = IntPtr.Zero;
Debug.Assert(_syncObject != null);
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapDecoder.GetFrame(
_decoder.InternalDecoder,
(uint)_frameNumber,
out frameDecode
));
_frameSource = new BitmapSourceSafeMILHandle(frameDecode);
_frameSource.CalculateSize();
}
}
}
internal static extern int /*HRESULT*/ CreateBitmapFromSection(
UInt32 width,
UInt32 height,
ref Guid pixelFormatGuid,
IntPtr hSection,
UInt32 stride,
UInt32 offset,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal static extern int GetAsSoftwareBitmap(SafeMILHandle pInteropDeviceBitmap, out BitmapSourceSafeMILHandle pIWICBitmapSource);
internal static extern int /* HRESULT */ CreateBitmapFlipRotator(
IntPtr pICodecFactory,
out BitmapSourceSafeMILHandle /* IWICBitmapFlipRotator */ ppBitmapFlipRotator);
internal static extern int /* HRESULT */ CreateFormatConverter(
IntPtr pICodecFactory,
out BitmapSourceSafeMILHandle /* IWICFormatConverter */ ppFormatConverter);
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();
}
internal override void FinalizeCreation()
{
_bitmapInit.EnsureInitializedComplete();
BitmapSourceSafeMILHandle wicTransformer = null;
double scaleX, scaleY;
WICBitmapTransformOptions options;
GetParamsFromTransform(Transform, out scaleX, out scaleY, out options);
using (FactoryMaker factoryMaker = new FactoryMaker())
{
try
{
IntPtr wicFactory = factoryMaker.ImagingFactoryPtr;
wicTransformer = _source.WicSourceHandle;
if (!DoubleUtil.IsOne(scaleX) || !DoubleUtil.IsOne(scaleY))
{
uint width = Math.Max(1, (uint)(scaleX * _source.PixelWidth + 0.5));
uint height = Math.Max(1, (uint)(scaleY * _source.PixelHeight + 0.5));
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapScaler(
wicFactory,
out wicTransformer));
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapScaler.Initialize(
wicTransformer,
_source.WicSourceHandle,
width,
height,
WICInterpolationMode.Fant));
}
}
if (options != WICBitmapTransformOptions.WICBitmapTransformRotate0)
{
// Rotations are extremely slow if we're pulling from a decoder because we end
// up decoding multiple times. Caching the source lets us rotate faster at the cost
// of increased memory usage.
wicTransformer = CreateCachedBitmap(
null,
wicTransformer,
BitmapCreateOptions.PreservePixelFormat,
BitmapCacheOption.Default,
_source.Palette);
// BitmapSource.CreateCachedBitmap already calculates memory pressure for
// the new bitmap, so there's no need to do it before setting it to
// WicSourceHandle.
BitmapSourceSafeMILHandle rotator = null;
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFlipRotator(
wicFactory,
out rotator));
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapFlipRotator.Initialize(
rotator,
wicTransformer,
options));
}
wicTransformer = rotator;
}
// If we haven't introduced either a scaler or rotator, add a null rotator
// so that our WicSourceHandle isn't the same as our Source's.
if (options == WICBitmapTransformOptions.WICBitmapTransformRotate0 &&
DoubleUtil.IsOne(scaleX) && DoubleUtil.IsOne(scaleY))
{
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFlipRotator(
wicFactory,
out wicTransformer));
lock (_syncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapFlipRotator.Initialize(
wicTransformer,
_source.WicSourceHandle,
WICBitmapTransformOptions.WICBitmapTransformRotate0));
}
}
WicSourceHandle = wicTransformer;
_isSourceCached = _source.IsSourceCached;
}
catch
{
_bitmapInit.Reset();
throw;
}
}
CreationCompleted = true;
UpdateCachedSettings();
}
internal static extern int /*HRESULT*/
GetBitmap(
SafeMILHandle /* IMILRenderTargetBitmap */ THIS_PTR,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal static extern int /* HRESULT */ CreateColorTransform(
out BitmapSourceSafeMILHandle /* IWICColorTransform */ ppWICColorTransform);
internal static extern int /*HRESULT*/ CreateBitmapFromSource(
IntPtr THIS_PTR,
SafeMILHandle /* IWICBitmapSource */ pIBitmapSource,
WICBitmapCreateCacheOptions options,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal static extern int /* HRESULT */ CreateBitmapRenderTargetForBitmap(
IntPtr THIS_PTR,
BitmapSourceSafeMILHandle /* IWICBitmap */ pIBitmap,
out SafeMILHandle /* IMILRenderTargetBitmap */ ppIRenderTargetBitmap);
internal static extern int /*HRESULT*/ CreateBitmapFromMemory(
IntPtr THIS_PTR,
UInt32 width,
UInt32 height,
ref Guid pixelFormatGuid,
UInt32 stride,
UInt32 cbBufferSize,
IntPtr /* BYTE* */ pvPixels,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal unsafe static extern int /* HRESULT */ CreateCWICWrapperBitmap(
BitmapSourceSafeMILHandle /* IWICBitmapSource */ pIWICBitmapSource,
out BitmapSourceSafeMILHandle /* CWICWrapperBitmap as IWICBitmapSource */ pCWICWrapperBitmap);
internal static extern int /*HRESULT*/ CreateBitmap(
IntPtr THIS_PTR,
UInt32 width,
UInt32 height,
ref Guid pixelFormatGuid,
WICBitmapCreateCacheOptions options,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
private void EnsureThumbnail()
{
if (_isThumbnailCached || IsDownloading)
{
return;
}
else
{
EnsureSource();
IntPtr /* IWICBitmapSource */ thumbnail = IntPtr.Zero;
lock (_syncObject)
{
// Check if there is embedded thumbnail or not
int hr = UnsafeNativeMethods.WICBitmapFrameDecode.GetThumbnail(
_frameSource,
out thumbnail
);
if (hr != (int)WinCodecErrors.WINCODEC_ERR_CODECNOTHUMBNAIL)
{
HRESULT.Check(hr);
}
}
_isThumbnailCached = true;
if (thumbnail != IntPtr.Zero)
{
BitmapSourceSafeMILHandle thumbHandle = new BitmapSourceSafeMILHandle(thumbnail);
SafeMILHandle unmanagedPalette = BitmapPalette.CreateInternalPalette();
BitmapPalette palette = null;
int hr = UnsafeNativeMethods.WICBitmapSource.CopyPalette(
thumbHandle,
unmanagedPalette
);
if (hr == HRESULT.S_OK)
{
palette = new BitmapPalette(unmanagedPalette);
}
_thumbnail = new UnmanagedBitmapWrapper(
CreateCachedBitmap(
null,
thumbHandle,
BitmapCreateOptions.PreservePixelFormat,
_cacheOption,
palette
));
_thumbnail.Freeze();
}
}
}
internal static extern int /*HRESULT*/ CreateBitmapFromHBITMAP(
IntPtr THIS_PTR,
IntPtr hBitmap,
IntPtr hPalette,
WICBitmapAlphaChannelOption options,
out BitmapSourceSafeMILHandle /* IWICBitmap */ ppIBitmap);
internal static BitmapSourceSafeMILHandle CreateCachedBitmap(
BitmapFrame frame,
BitmapSourceSafeMILHandle wicSource,
BitmapCreateOptions createOptions,
BitmapCacheOption cacheOption,
BitmapPalette palette
)
{
BitmapSourceSafeMILHandle wicConverter = null;
BitmapSourceSafeMILHandle wicConvertedSource = null;
// For NoCache, return the original
if (cacheOption == BitmapCacheOption.None)
{
return wicSource;
}
using (FactoryMaker factoryMaker = new FactoryMaker())
{
IntPtr wicFactory = factoryMaker.ImagingFactoryPtr;
bool changeFormat = false;
PixelFormat originalFmt = PixelFormats.Pbgra32;
WICBitmapCreateCacheOptions wicCache = WICBitmapCreateCacheOptions.WICBitmapCacheOnLoad;
if (cacheOption == BitmapCacheOption.OnDemand)
{
wicCache = WICBitmapCreateCacheOptions.WICBitmapCacheOnDemand;
}
originalFmt = PixelFormat.GetPixelFormat(wicSource);
PixelFormat destFmt = originalFmt;
// check that we need to change the format of the bitmap
if (0 == (createOptions & BitmapCreateOptions.PreservePixelFormat))
{
if (!IsCompatibleFormat(originalFmt))
changeFormat = true;
destFmt = BitmapSource.GetClosestDUCEFormat(originalFmt, palette);
}
if (frame != null &&
(createOptions & BitmapCreateOptions.IgnoreColorProfile) == 0 &&
frame.ColorContexts != null &&
frame.ColorContexts[0] != null &&
frame.ColorContexts[0].IsValid &&
!frame._isColorCorrected &&
PixelFormat.GetPixelFormat(wicSource).Format != PixelFormatEnum.Extended
)
{
ColorContext destinationColorContext;
// We need to make sure, we can actually create the ColorContext for the destination destFmt
// If the destFmt is gray or scRGB, the following is not supported, so we cannot
// create the ColorConvertedBitmap
try
{
destinationColorContext = new ColorContext(destFmt);
}
catch (NotSupportedException)
{
destinationColorContext = null;
}
if (destinationColorContext != null)
{
// NOTE: Never do this for a non-MIL pixel format, because the format converter has
// special knowledge to deal with the profile
bool conversionSuccess = false;
bool badColorContext = false;
// First try if the color converter can handle the source format directly
// Its possible that the color converter does not support certain pixelformats, so put a try/catch here.
try
{
ColorConvertedBitmap colorConvertedBitmap = new ColorConvertedBitmap(
frame,
frame.ColorContexts[0],
destinationColorContext,
destFmt
);
wicSource = colorConvertedBitmap.WicSourceHandle;
frame._isColorCorrected = true;
conversionSuccess = true;
changeFormat = false; // Changeformat no longer necessary, because destFmt already created
// by ColorConvertedBitmap
}
catch (NotSupportedException)
{
}
catch (FileFormatException)
{
// If the file contains a bad color context, we catch the exception here
// and don't bother trying the color conversion below, since color transform isn't possible
// with the given color context.
badColorContext = true;
}
if (!conversionSuccess && changeFormat && !badColorContext)
{ // If the conversion failed, we first use
// a FormatConvertedBitmap, and then Color Convert that one...
changeFormat = false;
FormatConvertedBitmap formatConvertedBitmap = new FormatConvertedBitmap(frame, destFmt, null, 0.0);
ColorConvertedBitmap colorConvertedBitmap = new ColorConvertedBitmap(
formatConvertedBitmap,
frame.ColorContexts[0],
destinationColorContext,
destFmt
);
wicSource = colorConvertedBitmap.WicSourceHandle;
frame._isColorCorrected = true;
Debug.Assert(destFmt == colorConvertedBitmap.Format);
changeFormat = false; // Changeformat no longer necessary, because destFmt already created
// by ColorConvertedBitmap
}
}
}
if (changeFormat)
{
// start up a format converter
Guid fmtDestFmt = destFmt.Guid;
HRESULT.Check(UnsafeNativeMethods.WICCodec.WICConvertBitmapSource(
ref fmtDestFmt,
wicSource,
out wicConverter));
// dump the converted contents into a bitmap
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFromSource(
wicFactory,
wicConverter,
wicCache,
out wicConvertedSource));
}
else
{
// Create the unmanaged resources
HRESULT.Check(UnsafeNativeMethods.WICImagingFactory.CreateBitmapFromSource(
wicFactory,
wicSource,
wicCache,
out wicConvertedSource));
}
wicConvertedSource.CalculateSize();
}
return wicConvertedSource;
}
internal CachedBitmap(BitmapSourceSafeMILHandle bitmap) : base(true)
{
if (bitmap == null)
{
throw new ArgumentNullException("bitmap");
}
// We're not calling CachedBitmap.Begin/EndInit because that would
// invoke FinalizeCreation which calls CreateCachedBitmap that does
// unnecessary work and only deals with BitmapFrames
_bitmapInit.BeginInit();
_source = null;
_createOptions = BitmapCreateOptions.None;
_cacheOption = BitmapCacheOption.OnLoad;
//
// This constructor is used by D3DImage, which does not calculate memory pressure for
// the bitmap parameter before calling the constructor.
//
bitmap.CalculateSize();
// This will QI to IWICBitmapSource for us. QI also AddRefs, of course.
WicSourceHandle = bitmap;
_syncObject = WicSourceHandle;
IsSourceCached = true;
CreationCompleted = true;
_bitmapInit.EndInit();
}