Function lv_image_decoder_get_next 

pub unsafe extern "C" fn lv_image_decoder_get_next(
    decoder: *mut lv_image_decoder_t,
) -> *mut lv_image_decoder_t

Get the next image decoder in the linked list of image decoders @param decoder pointer to an image decoder or NULL to get the first one @return the next image decoder or NULL if no more image decoder exists