public void WriteSource(PipelineContext ctx, PixelArea area = default)
{
var wicFrame = WicEncoderFrame;
var wicRect = area.ToWicRect();
if (ctx.PlanarContext is not null)
{
var oformat = GUID_WICPixelFormat24bppBGR;
HRESULT.Check(wicFrame->SetPixelFormat(&oformat));
using var gchY = new WeakGCHandle(ctx.PlanarContext.SourceY);
using var gchCb = new WeakGCHandle(ctx.PlanarContext.SourceCb);
using var gchCr = new WeakGCHandle(ctx.PlanarContext.SourceCr);
var srcY = new IWICBitmapSourceImpl(gchY.Handle);
var srcCb = new IWICBitmapSourceImpl(gchCb.Handle);
var srcCr = new IWICBitmapSourceImpl(gchCr.Handle);
var planes = stackalloc[] {&srcY, &srcCb, &srcCr };
using var pframe = default(ComPtr <IWICPlanarBitmapFrameEncode>);
HRESULT.Check(wicFrame->QueryInterface(__uuidof <IWICPlanarBitmapFrameEncode>(), (void **)pframe.GetAddressOf()));
HRESULT.Check(pframe.Get()->WriteSource((IWICBitmapSource **)planes, 3, area.IsEmpty ? null : &wicRect));
}
else
{
var oformat = ctx.Source.Format.FormatGuid;
HRESULT.Check(wicFrame->SetPixelFormat(&oformat));
if (oformat != ctx.Source.Format.FormatGuid)
{
var ptt = WICBitmapPaletteType.WICBitmapPaletteTypeCustom;
using var pal = default(ComPtr <IWICPalette>);
if (PixelFormat.FromGuid(oformat).NumericRepresentation == PixelNumericRepresentation.Indexed)
{
HRESULT.Check(Wic.Factory->CreatePalette(pal.GetAddressOf()));
HRESULT.Check(pal.Get()->InitializePredefined(WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256, 0));
ptt = WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256;
HRESULT.Check(wicFrame->SetPalette(pal));
}
using var conv = default(ComPtr <IWICFormatConverter>);
HRESULT.Check(Wic.Factory->CreateFormatConverter(conv.GetAddressOf()));
HRESULT.Check(conv.Get()->Initialize(ctx.Source.AsIWICBitmapSource(ctx), &oformat, WICBitmapDitherType.WICBitmapDitherTypeNone, pal, 0.0, ptt));
ctx.Source = ctx.AddDispose(new ComPtr <IWICBitmapSource>((IWICBitmapSource *)conv.Get()).AsPixelSource(null, $"{nameof(IWICFormatConverter)}: {ctx.Source.Format.Name}->{PixelFormat.FromGuid(oformat).Name}", false));
}
else if (oformat == PixelFormat.Indexed8Bpp.FormatGuid)
{
Debug.Assert(ctx.WicContext.DestPalette is not null);
HRESULT.Check(wicFrame->SetPalette(ctx.WicContext.DestPalette));
}
using var gch = new WeakGCHandle(ctx.Source);
var src = new IWICBitmapSourceImpl(gch.Handle);
HRESULT.Check(wicFrame->WriteSource((IWICBitmapSource *)&src, area.IsEmpty ? null : &wicRect));
}
HRESULT.Check(wicFrame->Commit());
}
public void WriteSource(PipelineContext ctx, PixelArea area = default)
{
var wicFrame = WicEncoderFrame;
var wicRect = area.ToWicRect();
if (ctx.PlanarContext is not null)
{
var oformat = Consts.GUID_WICPixelFormat24bppBGR;
wicFrame.SetPixelFormat(ref oformat);
var planes = ArrayPool <IWICBitmapSource> .Shared.Rent(3);
planes[0] = ctx.PlanarContext.SourceY.AsIWICBitmapSource();
planes[1] = ctx.PlanarContext.SourceCb.AsIWICBitmapSource();
planes[2] = ctx.PlanarContext.SourceCr.AsIWICBitmapSource();
((IWICPlanarBitmapFrameEncode)wicFrame).WriteSource(planes, 3, area.IsEmpty ? ref WICRect.Null : ref wicRect);
ArrayPool <IWICBitmapSource> .Shared.Return(planes);
}
else
{
var oformat = ctx.Source.Format.FormatGuid;
wicFrame.SetPixelFormat(ref oformat);
if (oformat != ctx.Source.Format.FormatGuid)
{
var pal = default(IWICPalette);
var ptt = WICBitmapPaletteType.WICBitmapPaletteTypeCustom;
if (PixelFormat.FromGuid(oformat).NumericRepresentation == PixelNumericRepresentation.Indexed)
{
pal = ctx.WicContext.AddRef(Wic.Factory.CreatePalette());
pal.InitializePredefined(WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256, false);
ptt = WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256;
wicFrame.SetPalette(pal);
}
var conv = ctx.WicContext.AddRef(Wic.Factory.CreateFormatConverter());
conv.Initialize(ctx.Source.AsIWICBitmapSource(), oformat, WICBitmapDitherType.WICBitmapDitherTypeNone, pal, 0.0, ptt);
ctx.Source = conv.AsPixelSource($"{nameof(IWICFormatConverter)}: {ctx.Source.Format.Name}->{PixelFormat.FromGuid(oformat).Name}", false);
}
else if (oformat == PixelFormat.Indexed8Bpp.FormatGuid)
{
Debug.Assert(ctx.WicContext.DestPalette is not null);
wicFrame.SetPalette(ctx.WicContext.DestPalette);
}
wicFrame.WriteSource(ctx.Source.AsIWICBitmapSource(), area.IsEmpty ? ref WICRect.Null : ref wicRect);
}
wicFrame.Commit();
}
