V4L2_CTRL_CLASS_IMAGE_SOURCE 864 include/uapi/linux/v4l2-controls.h #define V4L2_CID_IMAGE_SOURCE_CLASS_BASE (V4L2_CTRL_CLASS_IMAGE_SOURCE | 0x900) V4L2_CTRL_CLASS_IMAGE_SOURCE 865 include/uapi/linux/v4l2-controls.h #define V4L2_CID_IMAGE_SOURCE_CLASS (V4L2_CTRL_CLASS_IMAGE_SOURCE | 1)