internal ColorTransform(SafeMILHandle bitmapSource, ColorContext srcContext, ColorContext dstContext, System.Windows.Media.PixelFormat pixelFormat)
{
InitializeICM();
if (srcContext == null)
{
srcContext = new ColorContext(pixelFormat);
}
if (dstContext == null)
{
dstContext = new ColorContext(pixelFormat);
}
_inputColorType = srcContext.ColorType;
_outputColorType = dstContext.ColorType;
//if this failed or the handle is invalid, we can't continue
if (srcContext.ProfileHandle != null && !srcContext.ProfileHandle.IsInvalid)
{
//if this failed or the handle is invalid, we can't continue
if (dstContext.ProfileHandle != null && !dstContext.ProfileHandle.IsInvalid)
{
_colorTransformHelper.CreateTransform(srcContext.ProfileHandle, dstContext.ProfileHandle);
}
}
}
/// <summary>
/// Construct a ColorConvertedBitmap
/// </summary>
/// <param name="source">Input BitmapSource to color convert</param>
/// <param name="sourceColorContext">Source Color Context</param>
/// <param name="destinationColorContext">Destination Color Context</param>
/// <param name="format">Destination Pixel format</param>
public ColorConvertedBitmap(BitmapSource source, ColorContext sourceColorContext, ColorContext destinationColorContext, PixelFormat format)
: base(true) // Use base class virtuals
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (sourceColorContext == null)
{
throw new ArgumentNullException("sourceColorContext");
}
if (destinationColorContext == null)
{
throw new ArgumentNullException("destinationColorContext");
}
_bitmapInit.BeginInit();
Source = source;
SourceColorContext = sourceColorContext;
DestinationColorContext = destinationColorContext;
DestinationFormat = format;
_bitmapInit.EndInit();
FinalizeCreation();
}
internal ColorTransform(SafeMILHandle bitmapSource, ColorContext srcContext, ColorContext dstContext, System.Windows.Media.PixelFormat pixelFormat)
{
InitializeICM();
if (srcContext == null)
{
srcContext = new ColorContext(pixelFormat);
}
if (dstContext == null)
{
dstContext = new ColorContext(pixelFormat);
}
_inputColorType = srcContext.ColorType;
_outputColorType = dstContext.ColorType;
//if this failed or the handle is invalid, we can't continue
if (srcContext.ProfileHandle != null && !srcContext.ProfileHandle.IsInvalid)
{
//if this failed or the handle is invalid, we can't continue
if (dstContext.ProfileHandle != null && !dstContext.ProfileHandle.IsInvalid)
{
_colorTransformHelper.CreateTransform(srcContext.ProfileHandle, dstContext.ProfileHandle);
}
}
}
private async Task ProcessTask(Tuple<int, int, double> task)
{
int width = task.Item1;
int height = task.Item2;
double k = task.Item3;
WriteableBitmap bitmap = (WriteableBitmap)MainImage.Source;
// Create new bitmap if current bit is invalid or obsolete.
if (bitmap == null || bitmap.PixelWidth != width || bitmap.PixelWidth != height)
{
bitmap = new WriteableBitmap(width, height, 96.0, 96.0, PixelFormats.Bgr32, null);
}
ColorContext cc = new ColorContext(PixelFormats.Bgr32);
this.Title = cc.ProfileUri.ToString();
bitmap.Lock();
IntPtr buffer = bitmap.BackBuffer;
int stride = bitmap.BackBufferStride;
// Generate the content of the bitmap.
await Task.Run(() => FillBitmap(buffer, width, height, stride, k));
bitmap.AddDirtyRect(new Int32Rect(0, 0, width, height));
bitmap.Unlock();
MainImage.Source = bitmap;
}
internal ColorTransform(ColorContext srcContext, ColorContext dstContext)
{
InitializeICM();
if (srcContext == null)
{
srcContext = new ColorContext(PixelFormats.Bgra32);
}
if (dstContext == null)
{
dstContext = new ColorContext(PixelFormats.Bgra32);
}
_inputColorType = srcContext.ColorType;
_outputColorType = dstContext.ColorType;
_colorTransformHelper.CreateTransform(srcContext.ProfileHandle, dstContext.ProfileHandle);
}
internal ColorTransform(ColorContext srcContext, ColorContext dstContext)
{
InitializeICM();
if (srcContext == null)
{
srcContext = new ColorContext(PixelFormats.Bgra32);
}
if (dstContext == null)
{
dstContext = new ColorContext(PixelFormats.Bgra32);
}
_inputColorType = srcContext.ColorType;
_outputColorType = dstContext.ColorType;
_colorTransformHelper.CreateTransform(srcContext.ProfileHandle, dstContext.ProfileHandle);
}
//------------------------------------------------------
//
// Equality Methods/Properties
//
//------------------------------------------------------
#region Equality methods and Properties
/// <summary>
/// Equals method
/// </summary>
override public bool Equals(object obj)
{
ColorContext context = obj as ColorContext;
return(context == this);
}
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;
}
/// <summary>
/// Return an object that should be set on the targetObject's targetProperty
/// for this markup extension. For ColorConvertedBitmapExtension, this is the object found in
/// a resource dictionary in the current parent chain that is keyed by ResourceKey
/// </summary>
/// <returns>
/// The object to set on this property.
/// </returns>
public override object ProvideValue(IServiceProvider serviceProvider)
{
if (_image == null)
{
throw new InvalidOperationException(SR.Get(SRID.ColorConvertedBitmapExtensionNoSourceImage));
}
if (_sourceProfile == null)
{
throw new InvalidOperationException(SR.Get(SRID.ColorConvertedBitmapExtensionNoSourceProfile));
}
// [BreakingChange] Dev10 Bug #454108
// We really should throw an ArgumentNullException here for serviceProvider.
// Save away the BaseUri.
IUriContext uriContext = serviceProvider.GetService(typeof(IUriContext)) as IUriContext;
if( uriContext == null )
{
throw new InvalidOperationException(SR.Get(SRID.MarkupExtensionNoContext, GetType().Name, "IUriContext" ));
}
_baseUri = uriContext.BaseUri;
Uri imageUri = GetResolvedUri(_image);
Uri sourceProfileUri = GetResolvedUri(_sourceProfile);
Uri destinationProfileUri = GetResolvedUri(_destinationProfile);
ColorContext sourceContext = new ColorContext(sourceProfileUri);
ColorContext destinationContext = destinationProfileUri != null ?
new ColorContext(destinationProfileUri) :
new ColorContext(PixelFormats.Default);
BitmapDecoder decoder = BitmapDecoder.Create(
imageUri,
BitmapCreateOptions.IgnoreColorProfile | BitmapCreateOptions.IgnoreImageCache,
BitmapCacheOption.None
);
BitmapSource bitmap = decoder.Frames[0];
FormatConvertedBitmap formatConverted = new FormatConvertedBitmap(bitmap, PixelFormats.Bgra32, null, 0.0);
object result = formatConverted;
try
{
ColorConvertedBitmap colorConverted = new ColorConvertedBitmap(formatConverted, sourceContext, destinationContext, PixelFormats.Bgra32);
result= colorConverted;
}
catch (FileFormatException)
{ // Gracefully ignore non-matching profile
// If the file contains a bad color context, we catch the exception here
// since color transform isn't possible
// with the given color context.
}
return result;
}
private void SaveFrame(SafeMILHandle frameEncodeHandle, SafeMILHandle encoderOptions, BitmapFrame frame)
{
SetupFrame(frameEncodeHandle, encoderOptions);
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeInitialized;
// Set the size
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.SetSize(
frameEncodeHandle,
frame.PixelWidth,
frame.PixelHeight
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeSizeSet;
// Set the resolution
double dpiX = frame.DpiX;
double dpiY = frame.DpiY;
if (dpiX <= 0)
{
dpiX = 96;
}
if (dpiY <= 0)
{
dpiY = 96;
}
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.SetResolution(
frameEncodeHandle,
dpiX,
dpiY
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeResolutionSet;
if (_supportsFrameThumbnails)
{
// Set the thumbnail.
BitmapSource thumbnail = frame.Thumbnail;
if (thumbnail != null)
{
SafeMILHandle thumbnailHandle = thumbnail.WicSourceHandle;
lock (thumbnail.SyncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.SetThumbnail(
frameEncodeHandle,
thumbnailHandle
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeThumbnailSet;
}
}
}
// if the source has been color corrected, we want to use a corresponding color profile
if (frame._isColorCorrected)
{
ColorContext colorContext = new ColorContext(frame.Format);
IntPtr[] colorContextPtrs = new IntPtr[1] { colorContext.ColorContextHandle.DangerousGetHandle() };
int hr = UnsafeNativeMethods.WICBitmapFrameEncode.SetColorContexts(
frameEncodeHandle,
1,
colorContextPtrs
);
// It's possible that some encoders may not support color contexts so don't check hr
if (hr == HRESULT.S_OK)
{
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeColorContextsSet;
}
}
// if the caller has explicitly provided color contexts, add them to the encoder
else
{
IList<ColorContext> colorContexts = frame.ColorContexts;
if (colorContexts != null && colorContexts.Count > 0)
{
int count = colorContexts.Count;
// Marshal can't convert SafeMILHandle[] so we must
{
IntPtr[] colorContextPtrs = new IntPtr[count];
for (int i = 0; i < count; ++i)
{
colorContextPtrs[i] = colorContexts[i].ColorContextHandle.DangerousGetHandle();
}
int hr = UnsafeNativeMethods.WICBitmapFrameEncode.SetColorContexts(
frameEncodeHandle,
(uint)count,
colorContextPtrs
);
// It's possible that some encoders may not support color contexts so don't check hr
if (hr == HRESULT.S_OK)
{
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeColorContextsSet;
}
}
}
}
// Set the pixel format and palette
lock (frame.SyncObject)
{
SafeMILHandle outSourceHandle = new SafeMILHandle();
SafeMILHandle bitmapSourceHandle = frame.WicSourceHandle;
SafeMILHandle paletteHandle = new SafeMILHandle();
// Set the pixel format and palette of the bitmap.
// This could (but hopefully won't) introduce a format converter.
HRESULT.Check(UnsafeNativeMethods.WICCodec.WICSetEncoderFormat(
bitmapSourceHandle,
paletteHandle,
frameEncodeHandle,
out outSourceHandle
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeFormatSet;
_writeSourceHandles.Add(outSourceHandle);
// Set the metadata
if (_supportsFrameMetadata)
{
BitmapMetadata metadata = frame.Metadata as BitmapMetadata;
// If the frame has metadata associated with a different container format, then we ignore it.
if (metadata != null && metadata.GuidFormat == ContainerFormat)
{
SafeMILHandle /* IWICMetadataQueryWriter */ metadataHandle = new SafeMILHandle();
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.GetMetadataQueryWriter(
frameEncodeHandle,
out metadataHandle
));
PROPVARIANT propVar = new PROPVARIANT();
try
{
propVar.Init(metadata);
lock (metadata.SyncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICMetadataQueryWriter.SetMetadataByName(
metadataHandle,
"/",
ref propVar
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeMetadataSet;
}
}
finally
{
propVar.Clear();
}
}
}
Int32Rect r = new Int32Rect();
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.WriteSource(
frameEncodeHandle,
outSourceHandle,
ref r
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeSourceWritten;
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.Commit(
frameEncodeHandle
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.FrameEncodeCommitted;
}
}
internal override void FinalizeCreation()
{
_bitmapInit.EnsureInitializedComplete();
Uri uri = UriSource;
if (_baseUri != null)
uri = new Uri(_baseUri, UriSource);
if ((CreateOptions & BitmapCreateOptions.IgnoreImageCache) != 0)
{
ImagingCache.RemoveFromImageCache(uri);
}
BitmapImage bitmapImage = CheckCache(uri);
if (bitmapImage != null &&
bitmapImage.CheckAccess() &&
bitmapImage.SourceRect.Equals(SourceRect) &&
bitmapImage.DecodePixelWidth == DecodePixelWidth &&
bitmapImage.DecodePixelHeight == DecodePixelHeight &&
bitmapImage.Rotation == Rotation &&
(bitmapImage.CreateOptions & BitmapCreateOptions.IgnoreColorProfile) ==
(CreateOptions & BitmapCreateOptions.IgnoreColorProfile)
)
{
_syncObject = bitmapImage.SyncObject;
lock (_syncObject)
{
WicSourceHandle = bitmapImage.WicSourceHandle;
IsSourceCached = bitmapImage.IsSourceCached;
_convertedDUCEPtr = bitmapImage._convertedDUCEPtr;
//
// We nee d to keep the strong reference to the cached image for a few reasons:
//
// The application may release the original cached image and then keep a
// reference to this image only, in which case, the cache can be collected.
// This will cause a few undesirable results:
// 1. The application may choose to decode the same URI again in which case
// we will not retrieve it from the cache even though we have a copy already
// decoded.
// 2. The original cached image holds onto the file stream indirectly which if
// collected can cause bad behavior if the entire image is not loaded into
// memory.
//
_cachedBitmapImage = bitmapImage;
}
UpdateCachedSettings();
return;
}
BitmapDecoder decoder = null;
if (_decoder == null)
{
// Note: We do not want to insert in the cache if there is a chance that
// the decode pixel width/height may cause the decoder LOD to change
decoder = BitmapDecoder.CreateFromUriOrStream(
_baseUri,
UriSource,
StreamSource,
CreateOptions & ~BitmapCreateOptions.DelayCreation,
BitmapCacheOption.None, // do not cache the frames since we will do that here
_uriCachePolicy,
false
);
if (decoder.IsDownloading)
{
_isDownloading = true;
_decoder = decoder;
decoder.DownloadProgress += OnDownloadProgress;
decoder.DownloadCompleted += OnDownloadCompleted;
decoder.DownloadFailed += OnDownloadFailed;
}
else
{
Debug.Assert(decoder.SyncObject != null);
}
}
else
{
// We already had a decoder, meaning we were downloading
Debug.Assert(!_decoder.IsDownloading);
decoder = _decoder;
_decoder = null;
}
if (decoder.Frames.Count == 0)
{
throw new System.ArgumentException(SR.Get(SRID.Image_NoDecodeFrames));
}
BitmapFrame frame = decoder.Frames[0];
BitmapSource source = frame;
Int32Rect sourceRect = SourceRect;
if (sourceRect.X == 0 && sourceRect.Y == 0 &&
sourceRect.Width == source.PixelWidth &&
sourceRect.Height == source.PixelHeight)
{
sourceRect = Int32Rect.Empty;
}
if (!sourceRect.IsEmpty)
{
CroppedBitmap croppedSource = new CroppedBitmap();
croppedSource.BeginInit();
croppedSource.Source = source;
croppedSource.SourceRect = sourceRect;
croppedSource.EndInit();
source = croppedSource;
if (_isDownloading)
{
// Unregister the download events because this is a dummy image. See comment below.
source.UnregisterDownloadEventSource();
}
}
int finalWidth = DecodePixelWidth;
int finalHeight = DecodePixelHeight;
if (finalWidth == 0 && finalHeight == 0)
{
finalWidth = source.PixelWidth;
finalHeight = source.PixelHeight;
}
else if (finalWidth == 0)
{
finalWidth = (source.PixelWidth * finalHeight) / source.PixelHeight;
}
else if (finalHeight == 0)
{
finalHeight = (source.PixelHeight * finalWidth) / source.PixelWidth;
}
if (finalWidth != source.PixelWidth || finalHeight != source.PixelHeight ||
Rotation != Rotation.Rotate0)
{
TransformedBitmap transformedSource = new TransformedBitmap();
transformedSource.BeginInit();
transformedSource.Source = source;
TransformGroup transformGroup = new TransformGroup();
if (finalWidth != source.PixelWidth || finalHeight != source.PixelHeight)
{
int oldWidth = source.PixelWidth;
int oldHeight = source.PixelHeight;
Debug.Assert(oldWidth > 0 && oldHeight > 0);
transformGroup.Children.Add(
new ScaleTransform(
(1.0*finalWidth)/ oldWidth,
(1.0*finalHeight)/oldHeight));
}
if (Rotation != Rotation.Rotate0)
{
double rotation = 0.0;
switch (Rotation)
{
case Rotation.Rotate0:
rotation = 0.0;
break;
case Rotation.Rotate90:
rotation = 90.0;
break;
case Rotation.Rotate180:
rotation = 180.0;
break;
case Rotation.Rotate270:
rotation = 270.0;
break;
default:
Debug.Assert(false);
break;
}
transformGroup.Children.Add(new RotateTransform(rotation));
}
transformedSource.Transform = transformGroup;
transformedSource.EndInit();
source = transformedSource;
if (_isDownloading)
{
//
// If we're currently downloading, then the BitmapFrameDecode isn't actually
// the image, it's just a 1x1 placeholder. The chain we're currently building
// will be replaced with another chain once download completes, so there's no
// need to have this chain handle DownloadCompleted.
//
// Having this chain handle DownloadCompleted is actually a bad thing. Because
// the dummy is just 1x1, the TransformedBitmap we're building here will have
// a large scaling factor (to scale the image from 1x1 up to whatever
// DecodePixelWidth/Height specifies). When the TransformedBitmap receives
// DownloadCompleted from the BFD, it will call into WIC to create a new
// bitmap scaler using the same large scaling factor, which can produce a huge
// bitmap (since the BFD is now no longer 1x1). This problem is made worse if
// this BitmapImage has BitmapCacheOption.OnLoad, since that will put a
// CachedBitmap after the TransformedBitmap. When DownloadCompleted propagates
// from the TransformedBitmap down to the CachedBitmap, the CachedBitmap will
// call CreateBitmapFromSource using the TransformedBitmap, which calls
// CopyPixels on the huge TransformedBitmap. We want to avoid chewing up the
// CPU and the memory, so we unregister the download event handlers here.
//
source.UnregisterDownloadEventSource();
}
}
//
// If the original image has a color profile and IgnoreColorProfile is not one of the create options,
// apply the profile so bits are color-corrected.
//
if ((CreateOptions & BitmapCreateOptions.IgnoreColorProfile) == 0 &&
frame.ColorContexts != null &&
frame.ColorContexts[0] != null &&
frame.ColorContexts[0].IsValid &&
source.Format.Format != PixelFormatEnum.Extended
)
{
// NOTE: Never do this for a non-MIL pixel format, because the format converter has
// special knowledge to deal with the profile
PixelFormat duceFormat = BitmapSource.GetClosestDUCEFormat(source.Format, source.Palette);
bool changeFormat = (source.Format != duceFormat);
ColorContext destinationColorContext;
// We need to make sure, we can actually create the ColorContext for the destination duceFormat
// If the duceFormat is gray or scRGB, the following is not supported, so we cannot
// create the ColorConvertedBitmap
try
{
destinationColorContext= new ColorContext(duceFormat);
}
catch (NotSupportedException)
{
destinationColorContext = null;
}
if (destinationColorContext != null)
{
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(
source,
frame.ColorContexts[0],
destinationColorContext,
duceFormat
);
source = colorConvertedBitmap;
if (_isDownloading)
{
// Unregister the download events because this is a dummy image. See comment above.
source.UnregisterDownloadEventSource();
}
conversionSuccess = true;
}
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 && !badColorContext && changeFormat)
{ // If the conversion failed, we first use
// a FormatConvertedBitmap, and then Color Convert that one...
FormatConvertedBitmap formatConvertedBitmap = new FormatConvertedBitmap(source, duceFormat, source.Palette, 0.0);
ColorConvertedBitmap colorConvertedBitmap = new ColorConvertedBitmap(
formatConvertedBitmap,
frame.ColorContexts[0],
destinationColorContext,
duceFormat
);
source = colorConvertedBitmap;
if (_isDownloading)
{
// Unregister the download events because this is a dummy image. See comment above.
source.UnregisterDownloadEventSource();
}
}
}
}
if (CacheOption != BitmapCacheOption.None)
{
try
{
// The bitmaps bits could be corrupt, and this will cause an exception if the CachedBitmap forces a decode.
CachedBitmap cachedSource = new CachedBitmap(source, CreateOptions & ~BitmapCreateOptions.DelayCreation, CacheOption);
source = cachedSource;
if (_isDownloading)
{
// Unregister the download events because this is a dummy image. See comment above.
source.UnregisterDownloadEventSource();
}
}
catch (Exception e)
{
RecoverFromDecodeFailure(e);
CreationCompleted = true; // we're bailing out because the decode failed
return;
}
}
// If CacheOption == OnLoad, no need to keep the stream around
if (decoder != null && CacheOption == BitmapCacheOption.OnLoad)
{
decoder.CloseStream();
}
else if (CacheOption != BitmapCacheOption.OnLoad)
{
//ensure that we don't GC the source
_finalSource = source;
}
WicSourceHandle = source.WicSourceHandle;
IsSourceCached = source.IsSourceCached;
CreationCompleted = true;
UpdateCachedSettings();
// Only insert in the imaging cache if download is complete
if (!IsDownloading)
{
InsertInCache(uri);
}
}
/// <summary>
/// Convert color profile of BitmapSource for color management.
/// </summary>
/// <param name="bitmapSource">Source BitmapSource</param>
/// <param name="sourceProfile">Source color profile</param>
/// <param name="destinationProfile">Destination color profile</param>
/// <returns>Outcome BitmapSource</returns>
/// <remarks>Source color profile is color profile embedded in image file and destination color profile is
/// color profile used by the monitor to which the Window belongs.</remarks>
public static BitmapSource ConvertColorProfile(BitmapSource bitmapSource, ColorContext sourceProfile, ColorContext destinationProfile)
{
var bitmapConverted = new ColorConvertedBitmap();
bitmapConverted.BeginInit();
bitmapConverted.Source = bitmapSource;
bitmapConverted.SourceColorContext = sourceProfile;
bitmapConverted.DestinationColorContext = destinationProfile;
bitmapConverted.DestinationFormat = PixelFormats.Bgra32;
bitmapConverted.EndInit();
return bitmapConverted;
}
/// <summary>
/// Convert Stream to BitmapSource.
/// </summary>
/// <param name="stream">Stream</param>
/// <param name="outerSize">Target outer size</param>
/// <param name="willReadExif">Whether Exif metadata will be read from Stream</param>
/// <param name="destinationProfile">Destination color profile for color management</param>
/// <returns>BitmapSource</returns>
private static BitmapSource ConvertStreamToBitmapSource(Stream stream, Size outerSize, bool willReadExif, ColorContext destinationProfile)
{
if (0 < stream.Position)
stream.Seek(0, SeekOrigin.Begin);
var bitmapFrame = BitmapFrame.Create(
stream,
BitmapCreateOptions.IgnoreColorProfile | BitmapCreateOptions.PreservePixelFormat, // For color management
BitmapCacheOption.OnLoad);
var orientation = willReadExif ? GetExifOrientation(bitmapFrame) : 0; // 0 means invalid.
var bitmapSource = ResizeAndReflectExifOrientation(bitmapFrame, outerSize, orientation);
if (destinationProfile != null)
{
var sourceProfile = GetColorProfile(bitmapFrame);
bitmapSource = ConvertColorProfile(bitmapSource, sourceProfile, destinationProfile);
}
bitmapSource.Freeze();
return bitmapSource;
}
/// <summary>
/// Convert byte array to BitmapSource applying Uniform transformation.
/// </summary>
/// <param name="bytes">Byte array</param>
/// <param name="outerSize">Target outer size</param>
/// <param name="willReadExif">Whether Exif metadata will be read from byte array</param>
/// <param name="destinationProfile">Destination color profile for color management</param>
/// <returns>BitmapSource</returns>
internal static async Task<BitmapSource> ConvertBytesToBitmapSourceUniformAsync(byte[] bytes, Size outerSize, bool willReadExif, ColorContext destinationProfile = null)
{
if ((bytes == null) || !bytes.Any())
throw new ArgumentNullException("bytes");
try
{
using (var ms = new MemoryStream())
{
await ms.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
if (willReadExif || (destinationProfile != null))
{
return await Task.Run(() => ConvertStreamToBitmapSource(ms, outerSize, willReadExif, destinationProfile));
}
return await Task.Run(() => ConvertStreamToBitmapImageUniform(ms, outerSize));
}
}
catch (Exception ex)
{
Debug.WriteLine("Failed to convert byte array to BitmapSource. {0}", ex);
if (IsImageNotSupported(ex))
throw new ImageNotSupportedException();
throw;
}
}
/// <summary>
/// Convert byte array to BitmapSource.
/// </summary>
/// <param name="bytes">Byte array</param>
/// <param name="targetWidth">Target width</param>
/// <param name="willReadExif">Whether Exif metadata will be read from byte array</param>
/// <param name="destinationProfile">Destination color profile for color management</param>
/// <returns>BitmapSource</returns>
internal static async Task<BitmapSource> ConvertBytesToBitmapSourceAsync(byte[] bytes, double targetWidth, bool willReadExif, ColorContext destinationProfile = null)
{
return await ConvertBytesToBitmapSourceAsync(bytes, targetWidth, 0D, willReadExif, destinationProfile).ConfigureAwait(false);
}
private ImageSource GetBitmapSource(SvgImageElement element, WpfDrawingContext context)
{
BitmapSource bitmapSource = this.GetBitmap(element, context);
if (bitmapSource == null)
{
return bitmapSource;
}
SvgColorProfileElement colorProfile = (SvgColorProfileElement)element.ColorProfile;
if (colorProfile == null)
{
return bitmapSource;
}
else
{
BitmapFrame bitmapSourceFrame = BitmapFrame.Create(bitmapSource);
ColorContext sourceColorContext = null;
IList<ColorContext> colorContexts = bitmapSourceFrame.ColorContexts;
if (colorContexts != null && colorContexts.Count != 0)
{
sourceColorContext = colorContexts[0];
}
else
{
sourceColorContext = new ColorContext(bitmapSource.Format);
//sourceColorContext = new ColorContext(PixelFormats.Default);
}
SvgUriReference svgUri = colorProfile.UriReference;
Uri profileUri = new Uri(svgUri.AbsoluteUri);
ColorContext destColorContext = new ColorContext(profileUri);
ColorConvertedBitmap convertedBitmap = new ColorConvertedBitmap(bitmapSource,
sourceColorContext, destColorContext, bitmapSource.Format);
return convertedBitmap;
}
}
