public static HeifImage ConvertToHeifImage(Image <Rgba32> image)
{
AnalyzeImage(image, out bool isGrayscale, out bool hasTransparency);
var colorspace = isGrayscale ? HeifColorspace.Monochrome : HeifColorspace.Rgb;
HeifChroma chroma;
if (colorspace == HeifColorspace.Monochrome)
{
chroma = HeifChroma.Monochrome;
}
else
{
chroma = hasTransparency ? HeifChroma.InterleavedRgba32 : HeifChroma.InterleavedRgb24;
}
HeifImage heifImage = null;
HeifImage temp = null;
try
{
temp = new HeifImage(image.Width, image.Height, colorspace, chroma);
if (colorspace == HeifColorspace.Monochrome)
{
temp.AddPlane(HeifChannel.Y, image.Width, image.Height, 8);
if (hasTransparency)
{
temp.AddPlane(HeifChannel.Alpha, image.Width, image.Height, 8);
}
CopyGrayscale(image, temp, hasTransparency);
}
else
{
temp.AddPlane(HeifChannel.Interleaved, image.Width, image.Height, 8);
CopyRgb(image, temp, hasTransparency);
}
heifImage = temp;
temp = null;
}
finally
{
temp?.Dispose();
}
return(heifImage);
}
public static HeifImage ConvertToHeifImage(Image <Rgb24> image)
{
bool isGrayscale = IsGrayscale(image);
var colorspace = isGrayscale ? HeifColorspace.Monochrome : HeifColorspace.Rgb;
var chroma = colorspace == HeifColorspace.Monochrome ? HeifChroma.Monochrome : HeifChroma.InterleavedRgb24;
HeifImage heifImage = null;
HeifImage temp = null;
try
{
temp = new HeifImage(image.Width, image.Height, colorspace, chroma);
if (colorspace == HeifColorspace.Monochrome)
{
temp.AddPlane(HeifChannel.Y, image.Width, image.Height, 8);
CopyGrayscale(image, temp);
}
else
{
temp.AddPlane(HeifChannel.Interleaved, image.Width, image.Height, 8);
CopyRgb(image, temp);
}
heifImage = temp;
temp = null;
}
finally
{
temp?.Dispose();
}
return(heifImage);
}