from libc.stdint cimport uint8_t, uint32_t

cdef extern from "sys/select.h":
    ctypedef struct fd_set:
        pass

cdef extern from "linux/can.h":
    cdef packed struct can_frame:
        uint32_t can_id
        uint8_t len
        uint8_t __pad
        uint8_t __res0
        uint8_t __len8_dlc
        uint8_t data[8]

cdef extern from "hexagram/can.h":
    ctypedef struct hexagram_can_if:
        pass

    hexagram_can_if *hexagram_can_if_open(const char *name)

    void hexagram_can_if_close(hexagram_can_if *can_if)

    int hexagram_can_if_read(hexagram_can_if *can_if, can_frame *frame)

    int hexagram_can_if_write(hexagram_can_if *can_if, can_frame *frame)

    int hexagram_can_if_fd(hexagram_can_if *can_if);

    void hexagram_can_if_fd_set(hexagram_can_if *can_if, fd_set *fds)

    int hexagram_can_if_fd_isset(hexagram_can_if *can_if, fd_set *fds)

cdef extern from "hexagram/cluster.h":
    int hexagram_cluster_filter_can_if(hexagram_can_if *can_if)