在Python cffi中的库之间传递对象

import cffi

ffi = cffi.FFI()
ffi.cdef("""
    typedef struct {
        int x;
        int y;
    } Point;

    void send_object(Point* point);
""")

lib = ffi.dlopen("send_lib.so")

class Point(object):
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def to_dict(self):
        return {"x": self.x, "y": self.y}

point = Point(10, 20)
point_data = point.to_dict()

# 将字典转换为C结构体，并传递给接收方库
c_point = ffi.new("Point*", point_data)
lib.send_object(c_point)

import cffi

ffi = cffi.FFI()
ffi.cdef("""
    typedef struct {
        int x;
        int y;
    } Point;

    void receive_object(Point* point);
""")

lib = ffi.dlopen("receive_lib.so")

class Point(object):
    def __init__(self, x, y):
        self.x = x
        self.y = y

    def __str__(self):
        return f"({self.x}, {self.y})"

    @staticmethod
    def from_struct(c_point):
        return Point(c_point.x, c_point.y)

@ffi.callback("void(Point*)")
def receive_callback(c_point):
    # 将接收到的C结构体转换为Python对象
    point = Point.from_struct(c_point)
    print("Received object:", point)

lib.receive_object(receive_callback)