public WicPaletizer(WicTransform prev, uint colors = 256u) : base(prev)
{
var newFormat = Consts.GUID_WICPixelFormat8bppIndexed;
if (!Context.Settings.IndexedColor || Context.PixelFormat.FormatGuid == newFormat || Context.IsGreyscale)
{
return;
}
var conv = AddRef(Wic.CreateFormatConverter());
if (!conv.CanConvert(Context.PixelFormat.FormatGuid, newFormat))
{
throw new NotSupportedException("Can't convert to destination pixel format");
}
var bmp = AddRef(Wic.CreateBitmapFromSource(Source, WICBitmapCreateCacheOption.WICBitmapCacheOnDemand));
var pal = AddRef(Wic.CreatePalette());
pal.InitializeFromBitmap(bmp, colors, false);
Context.DestPalette = pal;
conv.Initialize(bmp, newFormat, WICBitmapDitherType.WICBitmapDitherTypeErrorDiffusion, pal, 10.0, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
Source = conv;
Context.PixelFormat = PixelFormat.Cache[Source.GetPixelFormat()];
}
public WicPixelFormatConverter(WicTransform prev) : base(prev)
{
var newFormat = Consts.GUID_WICPixelFormat24bppBGR;
if (Context.HasAlpha)
{
newFormat = Context.PixelFormat.FormatGuid == Consts.GUID_WICPixelFormat32bppPBGRA ? Consts.GUID_WICPixelFormat32bppPBGRA : Consts.GUID_WICPixelFormat32bppBGRA;
}
else if (Context.IsGreyscale)
{
newFormat = Consts.GUID_WICPixelFormat8bppGray;
}
else if (Context.PixelFormat.ColorRepresentation == PixelColorRepresentation.Cmyk)
{
newFormat = Consts.GUID_WICPixelFormat32bppCMYK;
}
if (Context.PixelFormat.FormatGuid == newFormat)
{
return;
}
var conv = AddRef(Wic.CreateFormatConverter());
if (!conv.CanConvert(Context.PixelFormat.FormatGuid, newFormat))
{
throw new NotSupportedException("Can't convert to destination pixel format");
}
conv.Initialize(Source, newFormat, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
Source = conv;
Context.PixelFormat = PixelFormat.Cache[Source.GetPixelFormat()];
}
public void WriteSource(WicTransform prev)
{
var src = prev.Source;
var iformat = src.GetPixelFormat();
var oformat = iformat;
Frame.SetPixelFormat(ref oformat);
if (oformat != iformat)
{
var pal = default(IWICPalette);
var ptt = WICBitmapPaletteType.WICBitmapPaletteTypeCustom;
if (PixelFormat.Cache[oformat].NumericRepresentation == PixelNumericRepresentation.Indexed)
{
pal = AddRef(Wic.CreatePalette());
pal.InitializePredefined(WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256, false);
ptt = WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256;
}
var conv = AddRef(Wic.CreateFormatConverter());
conv.Initialize(src, oformat, WICBitmapDitherType.WICBitmapDitherTypeNone, pal, 0.0, ptt);
src = conv;
}
Frame.WriteSource(src, null);
Frame.Commit();
Encoder.Commit();
}
public WicPlanarConverter(WicTransform prevY, WicTransform prevCbCr) : base(prevY)
{
var cfmt = Consts.GUID_WICPixelFormat24bppBGR;
var conv = AddRef(Wic.CreateFormatConverter());
var pconv = conv as IWICPlanarFormatConverter;
pconv.Initialize(new IWICBitmapSource[] { prevY.Source, prevCbCr.Source }, 2, cfmt, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
Source = pconv;
if (Context.SourceColorContext != null)
{
var trans = AddRef(Wic.CreateColorTransform());
trans.Initialize(Source, Context.SourceColorContext, Context.DestColorContext, cfmt);
Source = trans;
}
}
public void WriteSource(WicTransform prev)
{
var src = prev.Source;
var iformat = src.GetPixelFormat();
var oformat = iformat;
Frame.SetPixelFormat(ref oformat);
if (oformat != iformat)
{
// TODO grey -> indexed support
//var pal = AddRef(Wic.CreatePalette());
//pal.InitializePredefined(WICBitmapPaletteType.WICBitmapPaletteTypeFixedGray256, false);
var conv = AddRef(Wic.CreateFormatConverter());
conv.Initialize(src, oformat, WICBitmapDitherType.WICBitmapDitherTypeNone, null, 0.0, WICBitmapPaletteType.WICBitmapPaletteTypeCustom);
src = conv;
}
Frame.WriteSource(src, null);
Frame.Commit();
Encoder.Commit();
}