public YCbCrForwardConverter420(ImageFrame <TPixel> frame)
{
// matrices would be filled during convert calls
this.YLeft = default;
this.YRight = default;
this.Cb = default;
this.Cr = default;
// temporal pixel buffers
this.pixelSpan = new TPixel[PixelsPerSample].AsSpan();
this.rgbSpan = MemoryMarshal.Cast <byte, Rgb24>(new byte[RgbSpanByteSize + RgbToYCbCrConverterVectorized.AvxCompatibilityPadding].AsSpan());
// frame data
this.samplingAreaSize = new Size(frame.Width, frame.Height);
this.config = frame.GetConfiguration();
// conversion vector fallback data
if (!RgbToYCbCrConverterVectorized.IsSupported)
{
this.colorTables = RgbToYCbCrConverterLut.Create();
}
else
{
this.colorTables = default;
}
}
public static YCbCrForwardConverter <TPixel> Create()
{
var result = default(YCbCrForwardConverter <TPixel>);
if (!RgbToYCbCrConverterVectorized.IsSupported)
{
// Avoid creating lookup tables, when vectorized converter is supported
result.colorTables = RgbToYCbCrConverterLut.Create();
}
return(result);
}