Function vmeta_frame_get_camera_tilt 

pub unsafe extern "C" fn vmeta_frame_get_camera_tilt(
    meta: *mut vmeta_frame,
    tilt: *mut f32,
) -> c_int

Get the camera tilt angle from a frame metadata structure. The function fills the tilt value with the camera tilt angle if it is available according to the metadata type. If the camera tilt angle is not available for the given type, -ENOENT is returned. @param meta: pointer to a frame metadata structure @param pan: pointer to a camera tilt value (output) @return 0 on success, negative errno value in case of error