public static Stream ProcessImage(WicTransform prev, WicProcessingContext ctx, Stream ostm)
{
bool savePlanar = ctx.Settings.SaveFormat == FileFormat.Jpeg && ctx.SourceColorContext == null;
using (var rot = new WicExifRotator(prev))
using (var pln = new WicPlanarCache(rot))
using (var ply = new WicPlanarSplitter(pln, WicPlane.Luma))
using (var lll = new WicGammaExpand(ply))
using (var mmm = new WicHighQualityScaler(lll))
using (var ggg = new WicGammaCompress(mmm))
using (var sss = new WicUnsharpMask(ggg))
using (var enc = new WicEncoder(ostm.AsIStream(), ctx))
using (var plc = new WicPlanarSplitter(pln, WicPlane.Chroma))
{
if (savePlanar)
{
var subsample = ctx.Settings.JpegSubsampleMode;
if (subsample == ChromaSubsampleMode.Subsample420)
{
ctx.Settings.Height = (int)Math.Ceiling(ctx.Settings.Height / 2d);
}
if (subsample == ChromaSubsampleMode.Subsample420 || subsample == ChromaSubsampleMode.Subsample422)
{
ctx.Settings.Width = (int)Math.Ceiling(ctx.Settings.Width / 2d);
}
using (var res = new WicScaler(plc))
using (var pen = new WicPlanarEncoder(enc))
pen.WriteSource(sss, res);
}
else
{
using (var res = new WicScaler(plc))
using (var con = new WicPlanarConverter(sss, res))
using (var pal = new WicPaletizer(con, 256))
enc.WriteSource(pal);
}
}
return(ostm);
}
private static void processImage(WicDecoder dec, WicProcessingContext ctx, Stream ostm)
{
using (var frm = new WicFrameReader(dec, ctx))
using (var met = new WicMetadataReader(frm))
{
if (!ctx.Settings.Normalized)
{
ctx.Settings.Fixup((int)ctx.Width, (int)ctx.Height, ctx.IsRotated90);
}
bool mod1 = (!ctx.IsSubsampled || ctx.Settings.HybridScaleRatio > 1d || (ctx.Settings.Crop.Width % 2 == 0 && ctx.Settings.Crop.Height % 2 == 0) || (ctx.Settings.Crop.Width == ctx.Width && ctx.Settings.Crop.Height == ctx.Height));
bool planar = ctx.SupportsPlanar && mod1;
if (planar && ctx.Settings.HybridMode != HybridScaleMode.Off)
{
MagicPlanarImageProcessor.ProcessImage(met, ctx, ostm);
return;
}
using (var qsc = new WicNativeScaler(met))
using (var rot = new WicExifRotator(qsc))
using (var cac = new WicConditionalCache(rot))
using (var crp = new WicCropper(cac))
using (var pix = new WicPixelFormatConverter(crp))
using (var cmy = new WicCmykConverter(pix))
using (var res = new WicScaler(cmy, true))
using (var lll = new WicGammaExpand(res))
using (var mmm = new WicHighQualityScaler(lll))
using (var mat = new WicMatteTransform(mmm))
using (var ggg = new WicGammaCompress(mat))
using (var csc = new WicColorspaceConverter(ggg))
using (var sss = new WicUnsharpMask(csc))
using (var dit = new WicPaletizer(sss, 256))
using (var enc = new WicEncoder(ostm.AsIStream(), ctx))
enc.WriteSource(dit);
}
}