private static void buildPipeline(PipelineContext ctx, bool outputPlanar = true)
{
ctx.ImageFrame = ctx.ImageContainer.GetFrame(ctx.Settings.FrameIndex);
bool processPlanar = false;
var wicFrame = ctx.ImageFrame as WicImageFrame;
if (wicFrame != null)
{
processPlanar = EnablePlanarPipeline && wicFrame.SupportsPlanarProcessing && ctx.Settings.Interpolation.WeightingFunction.Support >= 0.5;
bool profilingPassThrough = processPlanar || (wicFrame.SupportsNativeScale && ctx.Settings.HybridScaleRatio > 1);
ctx.Source = wicFrame.WicSource.AsPixelSource(nameof(IWICBitmapFrameDecode), !profilingPassThrough);
}
else if (ctx.ImageFrame is IYccImageFrame planarFrame)
{
processPlanar = true;
outputPlanar = outputPlanar && planarFrame.IsFullRange && planarFrame.RgbYccMatrix.IsRouglyEqualTo(YccMatrix.Rec601);
ctx.PlanarContext = new PipelineContext.PlanarPipelineContext(planarFrame.PixelSource.AsPixelSource(), planarFrame.PixelSourceCb.AsPixelSource(), planarFrame.PixelSourceCr.AsPixelSource());
ctx.Source = ctx.PlanarContext.SourceY;
}
MagicTransforms.AddColorProfileReader(ctx);
ctx.FinalizeSettings();
ctx.Settings.UnsharpMask = ctx.UsedSettings.UnsharpMask;
ctx.Settings.JpegQuality = ctx.UsedSettings.JpegQuality;
ctx.Settings.JpegSubsampleMode = ctx.UsedSettings.JpegSubsampleMode;
var subsample = ctx.Settings.JpegSubsampleMode;
if (processPlanar)
{
if (wicFrame != null && !ctx.Settings.AutoCrop && ctx.Settings.HybridScaleRatio == 1)
{
var orCrop = PixelArea.FromGdiRect(ctx.Settings.Crop).DeOrient(ctx.Orientation, ctx.Source.Width, ctx.Source.Height);
if (wicFrame.ChromaSubsampling.IsSubsampledX() && ((orCrop.X & 1) != 0 || (orCrop.Width & 1) != 0))
{
processPlanar = false;
}
if (wicFrame.ChromaSubsampling.IsSubsampledY() && ((orCrop.Y & 1) != 0 || (orCrop.Height & 1) != 0))
{
processPlanar = false;
}
}
if (ctx.Settings.SaveFormat == FileFormat.Jpeg && ctx.Orientation.SwapsDimensions())
{
if (subsample.IsSubsampledX() && (ctx.Settings.InnerSize.Width & 1) != 0)
{
outputPlanar = false;
}
if (subsample.IsSubsampledY() && (ctx.Settings.InnerSize.Height & 1) != 0)
{
outputPlanar = false;
}
}
}
if (processPlanar)
{
bool savePlanar = outputPlanar &&
ctx.Settings.SaveFormat == FileFormat.Jpeg &&
ctx.Settings.OuterSize == ctx.Settings.InnerSize &&
ctx.DestColorProfile == ctx.SourceColorProfile;
if (wicFrame != null)
{
WicTransforms.AddPlanarCache(ctx);
}
MagicTransforms.AddPlanarCropper(ctx);
MagicTransforms.AddPlanarHybridScaler(ctx);
MagicTransforms.AddPlanarHighQualityScaler(ctx, savePlanar ? subsample : ChromaSubsampleMode.Subsample444);
MagicTransforms.AddUnsharpMask(ctx);
if (savePlanar)
{
MagicTransforms.AddPlanarExifFlipRotator(ctx);
MagicTransforms.AddPlanarExternalFormatConverter(ctx);
}
else
{
MagicTransforms.AddPlanarConverter(ctx);
MagicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddExifFlipRotator(ctx);
MagicTransforms.AddPad(ctx);
}
}
else
{
WicTransforms.AddNativeScaler(ctx);
MagicTransforms.AddCropper(ctx);
MagicTransforms.AddHybridScaler(ctx);
WicTransforms.AddPixelFormatConverter(ctx);
MagicTransforms.AddHybridScaler(ctx);
MagicTransforms.AddHighQualityScaler(ctx);
MagicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddMatte(ctx);
MagicTransforms.AddUnsharpMask(ctx);
MagicTransforms.AddExifFlipRotator(ctx);
MagicTransforms.AddPad(ctx);
}
}
