[NOT MERGE] Try to use numpy with ctypes #86
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This PR tried to use numpy and ctypes library to pass bytes from Python to C++ avoiding a copy in the process.
Conclusions
There is still no way to pass a pointer from Python to C++ through SWIG. SWIG check every parameter that is passed through and the ptrs that come from numpy or ctypes are of a Python class (those from ctypes could be parsed to C, but SWIG does not allow it).
Disclaimer
This PR adds a demo that IS NOT WORKING.