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);
}
}
}
internal override void SetupFrame(SafeMILHandle frameEncodeHandle, SafeMILHandle encoderOptions)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapFrameEncode.Initialize(
frameEncodeHandle,
encoderOptions
));
}
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 void CreateMedia(MediaPlayer mediaPlayer)
{
CheckMediaDisabledFlags();
SafeMILHandle unmanagedProxy = null;
MediaEventsHelper.CreateMediaEventsHelper(mediaPlayer, out _mediaEventsHelper, out unmanagedProxy);
try
{
using (FactoryMaker myFactory = new FactoryMaker())
{
HRESULT.Check(UnsafeNativeMethods.MILFactory2.CreateMediaPlayer(
myFactory.FactoryPtr,
unmanagedProxy,
SecurityHelper.CallerHasMediaPermission(MediaPermissionAudio.AllAudio, MediaPermissionVideo.AllVideo, MediaPermissionImage.NoImage),
out _nativeMedia
));
}
}
catch
{
if (_nativeMedia != null && !_nativeMedia.IsInvalid)
{
_nativeMedia.Close();
}
throw;
}
_helper = new Helper(_nativeMedia);
AppDomain.CurrentDomain.ProcessExit += _helper.ProcessExitHandler;
}
/// <summary>
/// Create the unmanaged media resources
/// </summary>
private void CreateMedia(MediaPlayer mediaPlayer)
{
SafeMILHandle unmanagedProxy = null;
MediaEventsHelper.CreateMediaEventsHelper(mediaPlayer, out _mediaEventsHelper, out unmanagedProxy);
try
{
using (FactoryMaker myFactory = new FactoryMaker())
{
HRESULT.Check(UnsafeNativeMethods.MILFactory2.CreateMediaPlayer(
myFactory.FactoryPtr,
unmanagedProxy,
true,
out _nativeMedia
));
}
}
catch
{
if (_nativeMedia != null && !_nativeMedia.IsInvalid)
{
_nativeMedia.Close();
}
throw;
}
_helper = new Helper(_nativeMedia);
AppDomain.CurrentDomain.ProcessExit += _helper.ProcessExitHandler;
}
internal void CopyMemoryPressure(SafeMILHandle original)
{
_gcPressure = original._gcPressure;
if (_gcPressure != null)
{
_gcPressure.AddRef();
}
}
internal void CopyMemoryPressure(SafeMILHandle original)
{
_gcPressure = original._gcPressure;
if (_gcPressure != null)
{
_gcPressure.AddRef();
}
}
internal static PixelFormat GetPixelFormat(
SafeMILHandle /* IWICBitmapSource */ bitmapSource
)
{
Guid guidPixelFormat = WICPixelFormatGUIDs.WICPixelFormatDontCare;
HRESULT.Check(UnsafeNativeMethods.WICBitmapSource.GetPixelFormat(bitmapSource, out guidPixelFormat));
return(new PixelFormat(guidPixelFormat));
}
/// <summary>
/// Create
/// </summary>
internal static void CreateMediaEventsHelper(MediaPlayer mediaPlayer,
out MediaEventsHelper eventsHelper,
out SafeMILHandle unmanagedProxy)
{
eventsHelper = new MediaEventsHelper(mediaPlayer);
// Created with ref count = 1. Since this object does not hold on
// to the unmanaged proxy, the lifetime is now controlled by whoever
// called CreateMediaEventsHelper.
unmanagedProxy = EventProxyWrapper.CreateEventProxyWrapper(eventsHelper);
}
internal static void CreateMediaEventsHelper(MediaPlayer mediaPlayer,
out MediaEventsHelper eventsHelper,
out SafeMILHandle unmanagedProxy)
{
eventsHelper = new MediaEventsHelper(mediaPlayer);
// Created with ref count = 1. Since this object does not hold on
// to the unmanaged proxy, the lifetime is now controlled by whoever
// called CreateMediaEventsHelper.
unmanagedProxy = EventProxyWrapper.CreateEventProxyWrapper(eventsHelper);
}
internal UnknownBitmapDecoder(
SafeMILHandle decoderHandle,
BitmapDecoder decoder,
Uri baseUri,
Uri uri,
Stream stream,
BitmapCreateOptions createOptions,
BitmapCacheOption cacheOption,
bool insertInDecoderCache,
bool originalWritable,
Stream uriStream,
UnmanagedMemoryStream unmanagedMemoryStream,
SafeFileHandle safeFilehandle
) : base(decoderHandle, decoder, baseUri, uri, stream, createOptions, cacheOption, insertInDecoderCache, originalWritable, uriStream, unmanagedMemoryStream, safeFilehandle)
{
}
/// <summary>
/// Helper method that will retrieve ColorContexts from an unmanaged object (e.g. BitmapDecoder or BitmapFrameDecode)
/// </summary>
internal static IList <ColorContext> GetColorContextsHelper(GetColorContextsDelegate getColorContexts)
{
uint numContexts = 0;
List <ColorContext> colorContextsList = null;
int hr = getColorContexts(ref numContexts, null);
if (hr != (int)WinCodecErrors.WINCODEC_ERR_UNSUPPORTEDOPERATION)
{
HRESULT.Check(hr);
}
if (numContexts > 0)
{
// GetColorContexts does not create new IWICColorContexts. Instead, it initializes existing
// ones so we must create them beforehand.
SafeMILHandle[] colorContextHandles = new SafeMILHandle[numContexts];
using (FactoryMaker factoryMaker = new FactoryMaker())
{
for (uint i = 0; i < numContexts; ++i)
{
HRESULT.Check(UnsafeNativeMethodsMilCoreApi.WICCodec.CreateColorContext(factoryMaker.ImagingFactoryPtr, out colorContextHandles[i]));
}
}
// The Marshal is unable to handle SafeMILHandle[] so we will convert it to an IntPtr[] ourselves.
{
IntPtr[] colorContextPtrs = new IntPtr[numContexts];
for (uint i = 0; i < numContexts; ++i)
{
colorContextPtrs[i] = colorContextHandles[i].DangerousGetHandle();
}
HRESULT.Check(getColorContexts(ref numContexts, colorContextPtrs));
}
colorContextsList = new List <ColorContext>((int)numContexts);
for (uint i = 0; i < numContexts; ++i)
{
colorContextsList.Add(new ColorContext(colorContextHandles[i]));
}
}
return(colorContextsList);
}
internal static SafeMILHandle CreateEventProxyWrapper(IInvokable invokable)
{
if (invokable == null)
{
throw new System.ArgumentNullException("invokable");
}
SafeMILHandle eventProxy = null;
EventProxyWrapper epw = new EventProxyWrapper(invokable);
EventProxyDescriptor epd = new EventProxyDescriptor();
epd.pfnDispose = EventProxyStaticPtrs.pfnDispose;
epd.pfnRaiseEvent = EventProxyStaticPtrs.pfnRaiseEvent;
epd.m_handle = System.Runtime.InteropServices.GCHandle.Alloc(epw, System.Runtime.InteropServices.GCHandleType.Normal);
HRESULT.Check(MILCreateEventProxy(ref epd, out eventProxy));
return(eventProxy);
}
internal static extern int /* HRESULT */ GetEncoderInfo(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
out SafeMILHandle /* IWICBitmapEncoderInfo ** */ ppIEncoderInfo
);
internal static extern int /* HRESULT */ Initialize(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
IntPtr /* IStream */ pStream,
WICBitmapEncodeCacheOption option);
internal static extern int /* HRESULT */ SetColorContexts(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
uint nIndex,
IntPtr[] /* IWICColorContext */ ppIColorContext
);
private extern static int /* HRESULT */ MILCreateEventProxy(ref EventProxyDescriptor pEPD, out SafeMILHandle ppEventProxy);
internal static extern int /* HRESULT */ GetFrameCount(
SafeMILHandle THIS_PTR,
out uint pFrameCount
);
internal static extern int /* HRESULT */ Commit(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR);
internal static extern int /* HRESULT */ SetPalette(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
System.Windows.Media.SafeMILHandle /* IWICPalette* */ pIPalette);
internal static extern UInt32 AddRef(SafeMILHandle pIUnkown);
internal static extern int /* HRESULT */ GetColorContexts(
SafeMILHandle /* IWICBitmapFrameDecode */ THIS_PTR,
uint count,
IntPtr[] /* IWICColorContext */ ppIColorContext,
out uint pActualCount
);
internal static extern int /* HRESULT */ GetMetadataQueryReader(
SafeMILHandle /* IWICBitmapFrameDecode */ THIS_PTR,
out IntPtr /* IWICMetadataQueryReader */ ppIQueryReader
);
internal static extern int /* HRESULT */ GetThumbnail(
SafeMILHandle /* IWICBitmapFrameDecode */ THIS_PTR,
out IntPtr /* IWICBitmap */ ppIThumbnail
);
internal static extern int /* HRESULT */ GetFrame(
SafeMILHandle /* IWICBitmapDecoder */ THIS_PTR,
UInt32 index,
out IntPtr /* IWICBitmapFrameDecode */ ppIFrameDecode
);
internal static extern int /* HRESULT */ CreateNewFrame(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
out SafeMILHandle /* IWICBitmapFrameEncode ** */ ppIFramEncode,
out SafeMILHandle /* IPropertyBag2 ** */ ppIEncoderOptions
);
internal static extern int /* HRESULT */ SetThumbnail(SafeMILHandle /* IWICBitmapEncoder* */ THIS_PTR,
System.Windows.Media.SafeMILHandle /* IWICBitmapSource* */ pIThumbnail);
/// <summary>
/// Setups the encoder and other properties before encoding each frame
/// </summary>
internal virtual void SetupFrame(SafeMILHandle frameEncodeHandle, SafeMILHandle encoderOptions)
{
throw new NotImplementedException();
}
internal static extern int /* HRESULT */ GetMetadataQueryWriter(
SafeMILHandle /* IWICBitmapEncoder */ THIS_PTR,
out SafeMILHandle /* IWICMetadataQueryWriter */ ppIQueryWriter
);
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;
}
}
public virtual void Save(System.IO.Stream stream)
{
VerifyAccess();
EnsureBuiltIn();
EnsureUnmanagedEncoder();
// No-op to get rid of build error
if (_encodeState == EncodeState.None)
{
}
if (_hasSaved)
{
throw new InvalidOperationException(SR.Get(SRID.Image_OnlyOneSave));
}
if (_frames == null)
{
throw new System.NotSupportedException(SR.Get(SRID.Image_NoFrames, null));
}
int count = _frames.Count;
if (count <= 0)
{
throw new System.NotSupportedException(SR.Get(SRID.Image_NoFrames, null));
}
IntPtr comStream = IntPtr.Zero;
SafeMILHandle encoderHandle = _encoderHandle;
try
{
comStream = StreamAsIStream.IStreamFrom(stream);
// does this addref the stream?
HRESULT.Check(UnsafeNativeMethods.WICBitmapEncoder.Initialize(
encoderHandle,
comStream,
WICBitmapEncodeCacheOption.WICBitmapEncodeNoCache
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.EncoderInitialized;
// Save global thumbnail if any.
if (_thumbnail != null)
{
Debug.Assert(_supportsGlobalThumbnail);
SafeMILHandle thumbnailBitmapSource = _thumbnail.WicSourceHandle;
lock (_thumbnail.SyncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICBitmapEncoder.SetThumbnail(
encoderHandle,
thumbnailBitmapSource
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.EncoderThumbnailSet;
}
}
// Save global palette if any.
if (_palette != null && _palette.Colors.Count > 0)
{
SafeMILHandle paletteHandle = _palette.InternalPalette;
HRESULT.Check(UnsafeNativeMethods.WICBitmapEncoder.SetPalette(
encoderHandle,
paletteHandle
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.EncoderPaletteSet;
}
// Save global metadata if any.
if (_metadata != null && _metadata.GuidFormat == ContainerFormat)
{
Debug.Assert(_supportsGlobalMetadata);
EnsureMetadata(false);
if (_metadata.InternalMetadataHandle != _metadataHandle)
{
PROPVARIANT propVar = new PROPVARIANT();
try
{
propVar.Init(_metadata);
lock (_metadata.SyncObject)
{
HRESULT.Check(UnsafeNativeMethods.WICMetadataQueryWriter.SetMetadataByName(
_metadataHandle,
"/",
ref propVar
));
}
}
finally
{
propVar.Clear();
}
}
}
for (int i = 0; i < count; i++)
{
SafeMILHandle frameEncodeHandle = new SafeMILHandle();
SafeMILHandle encoderOptions = new SafeMILHandle();
HRESULT.Check(UnsafeNativeMethods.WICBitmapEncoder.CreateNewFrame(
encoderHandle,
out frameEncodeHandle,
out encoderOptions
));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.EncoderCreatedNewFrame;
_frameHandles.Add(frameEncodeHandle);
SaveFrame(frameEncodeHandle, encoderOptions, _frames[i]);
// If multiple frames are not supported, break out
if (!_supportsMultipleFrames)
{
break;
}
}
// Now let the encoder know we are done encoding the file.
HRESULT.Check(UnsafeNativeMethods.WICBitmapEncoder.Commit(encoderHandle));
// Helpful for debugging stress and remote dumps
_encodeState = EncodeState.EncoderCommitted;
}
finally
{
UnsafeNativeMethods.MILUnknown.ReleaseInterface(ref comStream);
}
_hasSaved = true;
}
internal static extern int /* HRESULT */ GetPreview(
SafeMILHandle THIS_PTR,
out IntPtr /* IWICBitmapSource */ ppIBitmapSource
);
private void EnsureMetadata(bool createBitmapMetadata)
{
if (!_supportsGlobalMetadata)
{
return;
}
if (_metadataHandle == null)
{
SafeMILHandle /* IWICMetadataQueryWriter */ metadataHandle = new SafeMILHandle();
int hr = UnsafeNativeMethods.WICBitmapEncoder.GetMetadataQueryWriter(
_encoderHandle,
out metadataHandle
);
if (hr == (int)WinCodecErrors.WINCODEC_ERR_UNSUPPORTEDOPERATION)
{
_supportsGlobalMetadata = false;
return;
}
HRESULT.Check(hr);
_metadataHandle = metadataHandle;
}
if (createBitmapMetadata &&
_metadata == null &&
_metadataHandle != null)
{
_metadata = new BitmapMetadata(_metadataHandle, false, IsMetadataFixedSize, _metadataHandle);
}
}
internal static extern int /* HRESULT */ SetResolution(SafeMILHandle /* IWICBitmapFrameEncode* */ THIS_PTR,
double dpiX,
double dpiY);
internal static extern int /* HRESULT */ QueryInterface(
SafeMILHandle pIUnknown,
ref Guid guid,
out IntPtr ppvObject);
internal static extern int /* HRESULT */ WriteSource(SafeMILHandle /* IWICBitmapFrameEncode* */ THIS_PTR,
SafeMILHandle /* IWICBitmapSource* */ pIBitmapSource,
ref Int32Rect /* MILRect* */ r);
internal BitmapPalette(SafeMILHandle unmanagedPalette)
{
_palette = unmanagedPalette;
// Fill in the Colors property.
UpdateManaged();
}
internal static extern int /* HRESULT */ Initialize(SafeMILHandle /* IWICBitmapFrameEncode* */ THIS_PTR,
SafeMILHandle /* IPropertyBag2* */ pIEncoderOptions);
/// <summary>
/// Create a ColorContext from an unmanaged color context
/// </summary>
private ColorContext(SafeMILHandle colorContextHandle)
{
_colorContextHandle = colorContextHandle;
//
// For 3.* backwards compat, we aren't going to HRESULT.Check() anywhere because
// that could introduce new exceptions. If anything fails, _colorContextHelper
// will be invalid and we'll emulate the old failure behavior later in
// OpenProfileStream()
//
IWICCC.WICColorContextType type;
if (HRESULT.Failed(IWICCC.GetType(_colorContextHandle, out type)))
{
return;
}
switch (type)
{
case IWICCC.WICColorContextType.WICColorContextProfile:
uint cbProfileActual;
int hr = IWICCC.GetProfileBytes(_colorContextHandle, 0, null, out cbProfileActual);
if (HRESULT.Succeeded(hr) && cbProfileActual != 0)
{
byte[] profileData = new byte[cbProfileActual];
if (HRESULT.Failed(IWICCC.GetProfileBytes(
_colorContextHandle, cbProfileActual, profileData, out cbProfileActual))
)
{
return;
}
FromRawBytes(profileData, (int)cbProfileActual, /* dontThrowException = */ true);
}
break;
case IWICCC.WICColorContextType.WICColorContextExifColorSpace:
uint colorSpace;
if (HRESULT.Failed(IWICCC.GetExifColorSpace(_colorContextHandle, out colorSpace)))
{
return;
}
//
// From MSDN:
// "1" is sRGB. We will use our built-in sRGB profile.
// "2" is Adobe RGB. WIC says we should never see this because they are nonstandard and instead a
// real profile will be returned.
// "3-65534" is unused.
//
// From the Exif spec:
// B. Tag Relating to Color Space
// ColorSpace
//
// The color space information tag (ColorSpace) is always recorded as the color space specifier.
// Normally sRGB (=1) is used to define the color space based on the PC monitor conditions and environment. If a
// color space other than sRGB is used, Uncalibrated (=FFFF.H) is set. Image data recorded as Uncalibrated can be
// treated as sRGB when it is converted to Flashpix. On sRGB see Annex E.
// Tag = 40961 (A001.H)
// Type = SHORT
// Count = 1
// 1 = sRGB
// FFFF.H = Uncalibrated
//
// So for 65535 we will return sRGB since it is acceptible rather than having an invalid ColorContext. The Exif
// CC should always be the second one so the real one is given priority. Alternatively, we could ignore the
// uncalibrated CC but that would be a breaking change with 3.* (returning 1 instead of 2).
//
// If anything other than 1 or 65535 happens, _colorContextHelper will remain invalid and we will emulate
// the old crash behavior in OpenProfileStream().
//
if (colorSpace == 1 || colorSpace == 65535)
{
ResourceManager resourceManager = new ResourceManager(
_colorProfileResources, Assembly.GetAssembly(typeof(ColorContext))
);
byte[] sRGBProfile = (byte[])resourceManager.GetObject(_sRGBProfileName);
// The existing ColorContext has already been initialized as Exif so we can't initialize it again
// and instead must create a new one.
using (FactoryMaker factoryMaker = new FactoryMaker())
{
_colorContextHandle.Dispose();
_colorContextHandle = null;
if (HRESULT.Failed(UnsafeNativeMethodsMilCoreApi.WICCodec.CreateColorContext(
factoryMaker.ImagingFactoryPtr, out _colorContextHandle))
)
{
return;
}
if (HRESULT.Failed(IWICCC.InitializeFromMemory(
_colorContextHandle, sRGBProfile, (uint)sRGBProfile.Length))
)
{
return;
}
}
// Finally, fill in _colorContextHelper
FromRawBytes(sRGBProfile, sRGBProfile.Length, /* dontThrowException = */ true);
}
else if (Invariant.Strict)
{
Invariant.Assert(false, String.Format(CultureInfo.InvariantCulture, "IWICColorContext::GetExifColorSpace returned {0}.", colorSpace));
}
break;
default:
if (Invariant.Strict)
{
Invariant.Assert(false, "IWICColorContext::GetType() returned WICColorContextUninitialized.");
}
break;
}
// SECURITY NOTE: This constructor does not set a Uri because the profile comes from raw file
// data. Thus, we don't set _isProfileUriNotFromUser to true because we
// don't want get_ProfileUri to demand permission to return null.
Debug.Assert(_profileUri.Value == null);
}
internal static extern int /* HRESULT */ SetSize(SafeMILHandle /* IWICBitmapFrameEncode* */ THIS_PTR,
int width,
int height);