internal static extern int FLAC__stream_decoder_set_metadata_respond(IntPtr decoder, FLAC__MetadataType type);
internal static extern FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type);
internal static extern int FLAC__stream_decoder_set_metadata_respond(IntPtr decoder, FLAC__MetadataType type);
internal static extern FLAC__StreamMetadata *FLAC__metadata_object_new(FLAC__MetadataType type);