public static void AddColorspaceConverter(PipelineContext ctx)
{
if (ctx.SourceColorProfile is null || ctx.DestColorProfile is null || ctx.SourceColorProfile == ctx.DestColorProfile)
{
return;
}
if (ctx.SourceColorProfile.ProfileType > ColorProfileType.Matrix || ctx.DestColorProfile.ProfileType > ColorProfileType.Matrix)
{
AddExternalFormatConverter(ctx);
ctx.WicContext.SourceColorContext ??= ctx.WicContext.AddRef(WicColorProfile.CreateContextFromProfile(ctx.SourceColorProfile.ProfileBytes));
ctx.WicContext.DestColorContext ??= ctx.WicContext.AddRef(WicColorProfile.CreateContextFromProfile(ctx.DestColorProfile.ProfileBytes));
WicTransforms.AddColorspaceConverter(ctx);
return;
}
AddInternalFormatConverter(ctx, PixelValueEncoding.Linear);
if (ctx.Source.Format.ColorRepresentation == PixelColorRepresentation.Bgr && ctx.SourceColorProfile is MatrixProfile srcProf && ctx.DestColorProfile is MatrixProfile dstProf)
{
var matrix = srcProf.Matrix * dstProf.InverseMatrix;
if (matrix != default && !matrix.IsIdentity)
{
ctx.Source = new ColorMatrixTransformInternal(ctx.Source, matrix);
}
}
}
public static void AddColorProfileReader(PipelineContext ctx)
{
var fmt = ctx.ImageFrame is IYccImageFrame?PixelFormat.FromGuid(PixelFormats.Bgr24bpp) : ctx.Source.Format;
if (ctx.ImageFrame is WicImageFrame wicFrame)
{
ctx.WicContext.SourceColorContext = wicFrame.ColorProfileSource.WicColorContext;
ctx.SourceColorProfile = wicFrame.ColorProfileSource.ParsedProfile;
}
else
{
var profile = ColorProfile.Cache.GetOrAdd(ctx.ImageFrame.IccProfile);
if (profile.IsValid && profile.IsCompatibleWith(fmt) && !profile.IsSrgb)
{
ctx.WicContext.SourceColorContext = ctx.WicContext.AddRef(WicColorProfile.CreateContextFromProfile(profile.ProfileBytes));
ctx.SourceColorProfile = profile;
}
else
{
var wicProfile = WicColorProfile.GetDefaultFor(fmt);
ctx.WicContext.SourceColorContext = wicProfile.WicColorContext;
ctx.SourceColorProfile = wicProfile.ParsedProfile;
}
}
ctx.WicContext.DestColorContext = ctx.Settings.ColorProfileMode <= ColorProfileMode.NormalizeAndEmbed ? WicColorProfile.GetDefaultFor(fmt).WicColorContext : ctx.WicContext.SourceColorContext;
ctx.DestColorProfile = ctx.Settings.ColorProfileMode <= ColorProfileMode.NormalizeAndEmbed ? ColorProfile.GetDefaultFor(fmt) : ctx.SourceColorProfile;
}