public PlanarPixelSource(WicPlanarCache cache, WicPlane plane, WICBitmapPlaneDescription planeDesc)
{
Width = planeDesc.Width;
Height = planeDesc.Height;
Format = PixelFormat.Cache[planeDesc.Format];
cacheSource = cache;
cachePlane = plane;
}
public static void 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 WicConvertToCustomPixelFormat(ply))
using (var mmm = new WicHighQualityScaler(lll))
using (var ggg = new WicConvertFromCustomPixelFormat(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 fff = new WicConvertToCustomPixelFormat(plc))
using (var res = new WicHighQualityScaler(fff))
using (var bbb = new WicConvertFromCustomPixelFormat(res))
using (var pen = new WicPlanarEncoder(enc))
pen.WriteSource(sss, bbb);
}
else
{
using (var fff = new WicConvertToCustomPixelFormat(plc))
using (var res = new WicHighQualityScaler(fff))
using (var bbb = new WicConvertFromCustomPixelFormat(res))
using (var con = new WicPlanarConverter(sss, bbb))
using (var pal = new WicPaletizer(con))
enc.WriteSource(pal);
}
}
}
