V4L2_CTRL_CLASS_MPEG  177 include/uapi/linux/v4l2-controls.h #define V4L2_CID_MPEG_BASE 			(V4L2_CTRL_CLASS_MPEG | 0x900)
V4L2_CTRL_CLASS_MPEG  178 include/uapi/linux/v4l2-controls.h #define V4L2_CID_MPEG_CLASS 			(V4L2_CTRL_CLASS_MPEG | 1)
V4L2_CTRL_CLASS_MPEG  572 include/uapi/linux/v4l2-controls.h #define V4L2_CID_MPEG_CX2341X_BASE 				(V4L2_CTRL_CLASS_MPEG | 0x1000)
V4L2_CTRL_CLASS_MPEG  613 include/uapi/linux/v4l2-controls.h #define V4L2_CID_MPEG_MFC51_BASE				(V4L2_CTRL_CLASS_MPEG | 0x1100)