public static PixelFormat GetPixelFormat(OutputPixelFormat format)
{
switch (format)
{
#if WPF
case OutputPixelFormat.BGR24:
return(PixelFormats.Bgr24);
case OutputPixelFormat.BGR32:
return(PixelFormats.Bgr32);
case OutputPixelFormat.BGRA32:
return(PixelFormats.Bgra32);
case OutputPixelFormat.PBGRA32:
return(PixelFormats.Pbgra32);
#else
case OutputPixelFormat.BGR24:
return(PixelFormat.Format24bppRgb);
case OutputPixelFormat.BGR32:
return(PixelFormat.Format32bppRgb);
case OutputPixelFormat.BGRA32:
return(PixelFormat.Format32bppArgb);
case OutputPixelFormat.PBGRA32:
return(PixelFormat.Format32bppPArgb);
#endif
}
throw new ArgumentOutOfRangeException();
}
public static OutputPixelFormat DecideOutputPixelFormat(OutputPixelFormat format, bool?hasAlpha)
{
switch (format)
{
case OutputPixelFormat.PreferSmallSize:
if (hasAlpha.HasValue)
{
return(hasAlpha.Value ? OutputPixelFormat.BGRA32 : OutputPixelFormat.BGR24);
}
else
{
return(OutputPixelFormat.BGRA32);
}
case OutputPixelFormat.OptimizedForRendering:
if (hasAlpha.HasValue)
{
return(hasAlpha.Value ? OutputPixelFormat.PBGRA32 : OutputPixelFormat.BGR32);
}
else
{
return(OutputPixelFormat.BGRA32);
}
default:
return(format);
}
}
public static Colorspace GetWebpPixelFormat(OutputPixelFormat format)
{
switch (format)
{
case OutputPixelFormat.BGR24:
return(Colorspace.MODE_BGR);
case OutputPixelFormat.BGR32:
return(Colorspace.MODE_BGRA);
case OutputPixelFormat.BGRA32:
return(Colorspace.MODE_BGRA);
case OutputPixelFormat.PBGRA32:
return(Colorspace.MODE_bgrA);
}
throw new ArgumentOutOfRangeException();
}
