module ZXing; end module ZXing::FFI; end module ZXing::FFI:Common; end class ZXing::FFI::Common::HybridBinarizer < ZXing::FFI::Binarizer include ZXing::Common::HybridBinarizer def initialize luminance_source super ZXing::FFI::Library.HybridBinarizer_new(luminance_source.native), luminance_source end end