private string CreateSamplingFactors(JpegSamplingFactor samplingFactor)
{
switch (samplingFactor)
{
case JpegSamplingFactor.Ratio410:
return("4x2,1x1,1x1");
case JpegSamplingFactor.Ratio411:
return("4x1,1x1,1x1");
case JpegSamplingFactor.Ratio420:
return("2x2,1x1,1x1");
case JpegSamplingFactor.Ratio422:
return("2x1,1x1,1x1");
case JpegSamplingFactor.Ratio440:
return("1x2,1x1,1x1");
case JpegSamplingFactor.Ratio444:
return("1x1,1x1,1x1");
default:
throw new InvalidOperationException();
}
}
private static void AssertSetDefine(string expected, JpegSamplingFactor samplingFactor)
{
var defines = new JpegWriteDefines
{
SamplingFactor = samplingFactor,
};
using (var image = new MagickImage())
{
image.Settings.SetDefines(defines);
Assert.Equal(expected, image.Settings.GetDefine(MagickFormat.Jpeg, "sampling-factor"));
}
}
private static string CreateSamplingFactors(JpegSamplingFactor samplingFactor)
=> samplingFactor switch
{
