v4l2_crop
struct v4l2_rect v4l2_crop;
v4l2_crop = *v4l2_subdev_state_get_crop(state, src_pad->index, src_stream);
input_pin->crop_first_and_last_lines = v4l2_crop.top & 1;
struct v4l2_crop *p = arg;
struct v4l2_crop *p = arg;
IOCTL_INFO(VIDIOC_G_CROP, v4l_g_crop, v4l_print_crop, INFO_FL_CLEAR(v4l2_crop, type)),
const struct v4l2_crop *p = arg;
#define VIDIOC_G_CROP _IOWR('V', 59, struct v4l2_crop)
#define VIDIOC_S_CROP _IOW('V', 60, struct v4l2_crop)