以前采用的数据拷贝的笨办法：
1 bitmap_size = (1080, 1920, 3) 2 buf = create_string_buffer(bitmap_size[0]*bitmap_size[1]*bitmap_size[2]) 3 pointer_data = c_void_p(addressof(xxxx)) 4 memmove(buf, pointer_data, bitmap_size[0]*bitmap_size[1]*bitmap_size[2]) 5 # 6 np_arr = np.frombuffer(buf, dtype=np.uint8, count=bitmap_size[0]*bitmap_size[1]*bitmap_size[2]) 7 np_arr = np_arr.reshape(bitmap_size)
现在找到了更好的办法，不用拷贝数据：
1 bitmap_size = (1080, 1920, 3) 2 bytes_count = bitmap_size[0]*bitmap_size[1]*bitmap_size[2] 3 pointer_data = c_void_p(addressof(xxxx)) 4 #定义一个指向数组的指针 5 array_pointer = cast(pointer_data, POINTER(c_char*bytes_count))) 6 np_arr = np.frombuffer(array_pointer.contents, dtype=np.uint8, count=bytes_count) 7 np_arr = np_arr.reshape(bitmap_size)