c# - Marshal a struct containing pointer to array

Question

How to correctly marshal this C struct with pointer to array and pointer to pointer members in C# for use with 3rd party dll?

C:

typedef struct SomeStruct {
    uint8_t *data[8];
    uint8_t **extended_data;
};

Is it all just IntPtr and then you need to allocate the un-mamaged memory, copy data into it, and pin it? How would you do this if it's the case? The struct gets initialized through a function inside dll.

In python this is how I'd wrap and use this struct:

Python:

class SomeStruct(Structure):
    _fields_ = [
         ('data', POINTER(c_uint8) * 8),
         ('extended_data', POINTER(POINTER(c_uint8)))
    ]

dll = ctypes.CDLL("lib.dll")
some_struct = SomeStruct()
dll.init(ctypes.byref(some_struct))

# or example 2
alloc_struct_fce = dll.alloc_struct
alloc_struct_fce.restype = ctypes.POINTER(SomeStruct)   # specify return type
some_stryct_ptr = alloc_struct_fce()    # this gets passed to other dll functions

Trying to find a C# equivalent.

Answer 1

等待大神解答