You need to fix the input type of buffer_size_bytes first. Loadlibrary requires a header file that compiles stand alone. Your example program must have one or more #include statements before the one that defines sc_tdc_pipe_read2. There are two ways to fix this
- Modify the existing header or create a new one that has the needed includes
- Or create a prototype file with the mfilename option to loadlibrary and fix the rhs argument types for the function. With 32 bit code size_t should be uint32 and it should be uint64 for 64 bit code.
When the library is correctly loaded ether of these code blocks should work:
[ret,buffer]=calllib(mylib,myfun,uint64(zeros(1024,1),1024*8,50)
or
pp=libpointer('uint64Ptr',zeros([1024 1]))
ret=calllib(mylib,myfun,pp,1024*8,50)
buffer=pp.value;
Some of your other examples should work too but these are the preferable ones.
