v4l2_fmtdesc     1387 include/linux/videodev2.h #define VIDIOC_ENUM_FMT         _IOWR('V',  2, struct v4l2_fmtdesc)
v4l2_fmtdesc       37 include/media/v4l2-ioctl.h 					    struct v4l2_fmtdesc *f);
v4l2_fmtdesc       39 include/media/v4l2-ioctl.h 					    struct v4l2_fmtdesc *f);
v4l2_fmtdesc       41 include/media/v4l2-ioctl.h 					    struct v4l2_fmtdesc *f);
v4l2_fmtdesc       43 include/media/v4l2-ioctl.h 					    struct v4l2_fmtdesc *f);