ListDecoders returns a list of multicodec indicators for which a codec.Decoder is registered.

ListEncoders returns a list of multicodec indicators for which a codec.Encoder is registered.

LookupDecoder yields a codec.Decoder function matching a multicodec indicator code number.

LookupEncoder yields a codec.Encoder function matching a multicodec indicator code number.

RegisterDecoder updates the global DefaultRegistry a map a multicodec indicator number to the given codec.Decoder function.

RegisterEncoder updates the global DefaultRegistry to map a multicodec indicator number to the given codec.Encoder function.

DefaultRegistry is a multicodec.Registry instance which is global to the program, and is used as a default set of codecs.

Registry is a structure for storing mappings of multicodec indicator numbers to codec.Encoder and codec.Decoder functions.