V4L2_CTRL_CLASS_IMAGE_PROC  878 include/uapi/linux/v4l2-controls.h #define V4L2_CID_IMAGE_PROC_CLASS_BASE		(V4L2_CTRL_CLASS_IMAGE_PROC | 0x900)
V4L2_CTRL_CLASS_IMAGE_PROC  879 include/uapi/linux/v4l2-controls.h #define V4L2_CID_IMAGE_PROC_CLASS		(V4L2_CTRL_CLASS_IMAGE_PROC | 1)