private static ProcessImageResult processImage(PipelineContext ctx, Stream ostm)
{
var frame = (WicImageFrame)ctx.ImageContainer.GetFrame(ctx.Settings.FrameIndex);
ctx.AddFrameDisposer();
ctx.ImageFrame = frame;
ctx.Source = frame.Source;
MagicTransforms.AddGifFrameBuffer(ctx);
ctx.FinalizeSettings();
WicTransforms.AddColorProfileReader(ctx);
WicTransforms.AddNativeScaler(ctx);
WicTransforms.AddExifFlipRotator(ctx);
WicTransforms.AddCropper(ctx);
WicTransforms.AddPixelFormatConverter(ctx);
WicTransforms.AddHybridScaler(ctx);
WicTransforms.AddScaler(ctx);
WicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddMatte(ctx);
MagicTransforms.AddPad(ctx);
WicTransforms.AddIndexedColorConverter(ctx);
using var enc = new WicImageEncoder(ctx.Settings.SaveFormat, ostm);
using var frm = new WicImageEncoderFrame(ctx, enc);
frm.WriteSource(ctx);
enc.Commit();
return(new ProcessImageResult(ctx.UsedSettings, ctx.Stats));
}