Changing HF5get_file_image() behaviour with callbacks

Dear sir/madam,
I am working with HDF5 and the "HDF5 File Image Operations".
I write a HDF5 file in memory (using the H5FD_CORE driver) and after that
I recover a copy of the file with the HF5get_file_image() function.

Could be possible obtain the original memory (not a copy) using the
HF5set_file_image_callbacks function? It is possible redefine the
"image_malloc" and "image_memcpy" functions to avoid do a copy?

I am reading the documentation and I am not sure if it is possible ...

Yours faithfully,
Ivan Cores.