uvc_ctrl_menu_item
static const struct uvc_ctrl_menu_item exposure_mode_menu[] = {
static const struct uvc_ctrl_menu_item power_line_freq_menu[] = {
const struct uvc_ctrl_menu_item *src_menu_data = NULL;
struct uvc_ctrl_menu_item *dst_menu_data = NULL;
len = item_num * sizeof(struct uvc_ctrl_menu_item);
struct uvc_ctrl_menu_item *menu_items =
struct uvc_ctrl_menu_item* menu_data;