private static ProcessImageResult processImage(WicDecoder dec, WicProcessingContext ctx, Stream ostm)
{
var frm = new WicFrameReader(ctx);
WicTransforms.AddMetadataReader(ctx);
ctx.FinalizeSettings();
WicTransforms.AddNativeScaler(ctx);
WicTransforms.AddExifRotator(ctx);
WicTransforms.AddConditionalCache(ctx);
WicTransforms.AddCropper(ctx);
WicTransforms.AddPixelFormatConverter(ctx);
WicTransforms.AddScaler(ctx);
WicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddMatte(ctx);
MagicTransforms.AddPad(ctx);
WicTransforms.AddIndexedColorConverter(ctx);
var enc = new WicEncoder(ctx, ostm.AsIStream());
enc.WriteSource(ctx);
return(new ProcessImageResult {
Settings = ctx.UsedSettings, Stats = ctx.Stats
});
}
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));
}
private static void buildPipeline(WicProcessingContext ctx, bool outputPlanar = true)
{
var frm = new WicFrameReader(ctx, EnablePlanarPipeline);
WicTransforms.AddMetadataReader(ctx);
ctx.FinalizeSettings();
ctx.Settings.UnsharpMask = ctx.UsedSettings.UnsharpMask;
ctx.Settings.JpegQuality = ctx.UsedSettings.JpegQuality;
ctx.Settings.JpegSubsampleMode = ctx.UsedSettings.JpegSubsampleMode;
if (ctx.DecoderFrame.SupportsPlanarPipeline)
{
bool savePlanar = outputPlanar &&
ctx.Settings.SaveFormat == FileFormat.Jpeg &&
ctx.Settings.InnerRect == ctx.Settings.OuterRect &&
ctx.SourceColorContext is null;
WicTransforms.AddExifRotator(ctx);
WicTransforms.AddPlanarCache(ctx);
MagicTransforms.AddHighQualityScaler(ctx);
MagicTransforms.AddUnsharpMask(ctx);
MagicTransforms.AddExternalFormatConverter(ctx);
ctx.SwitchPlanarSource(WicPlane.Chroma);
if (savePlanar)
{
var subsample = ctx.Settings.JpegSubsampleMode;
if (subsample == ChromaSubsampleMode.Subsample420)
{
ctx.Settings.InnerRect.Height = (int)Math.Ceiling(ctx.Settings.InnerRect.Height / 2d);
}
if (subsample == ChromaSubsampleMode.Subsample420 || subsample == ChromaSubsampleMode.Subsample422)
{
ctx.Settings.InnerRect.Width = (int)Math.Ceiling(ctx.Settings.InnerRect.Width / 2d);
}
}
MagicTransforms.AddHighQualityScaler(ctx);
MagicTransforms.AddExternalFormatConverter(ctx);
ctx.SwitchPlanarSource(WicPlane.Luma);
if (!savePlanar)
{
WicTransforms.AddPlanarConverter(ctx);
MagicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddPad(ctx);
}
}
else
{
WicTransforms.AddNativeScaler(ctx);
WicTransforms.AddExifRotator(ctx);
WicTransforms.AddConditionalCache(ctx);
WicTransforms.AddCropper(ctx);
MagicTransforms.AddHighQualityScaler(ctx, true);
WicTransforms.AddPixelFormatConverter(ctx);
WicTransforms.AddScaler(ctx, true);
MagicTransforms.AddHighQualityScaler(ctx);
MagicTransforms.AddColorspaceConverter(ctx);
MagicTransforms.AddMatte(ctx);
MagicTransforms.AddUnsharpMask(ctx);
MagicTransforms.AddPad(ctx);
}
}
