LinearTosRGB converts the given value in linear RGB space into sRGB space.

ReadPNGFile reads the PNG image file with the given path then encodes it into an instance of `image.Image`.

SRGBToLinear converts the given value in sRGB space into linear RGB space.

ErrEmptyFile occurs when a file which was opened by I/O is empty.

ErrUnknownFileType occurs when the type of a specific file could not be detected.

ErrUnsupportedFile occurs when a file other than PNG or JPG is read to do blurhash encode.