status of V4L2?

["Jeremy C. Reed" <reed%reedmedia.net@localhost>]

I was working at ifdef'ing out the Linux udev use in guvcview GTK 
interface for capturing and viewing video using video4linux2.

I noticed many features are not supported. I know that video(4) says 
it does not support the complete V4L2 API.

Some of the features I encountered not supported include:

v4l2_ext_controls
v4l2_frmivalenum
V4L2_CID_CAMERA_CLASS_BASE
V4L2_CID_EXPOSURE_ABSOLUTE
V4L2_CID_EXPOSURE_AUTO
V4L2_CID_FOCUS_ABSOLUTE
V4L2_CID_FOCUS_AUTO
V4L2_CID_FOCUS_RELATIVE
V4L2_CID_PAN_RELATIVE
V4L2_CID_PAN_RESET
V4L2_CID_TILT_RELATIVE
V4L2_CID_TILT_RESET
V4L2_CTRL_CLASS_USER
V4L2_CTRL_FLAG_NEXT_CTRL
V4L2_CTRL_FLAG_WRITE_ONLY
V4L2_CTRL_TYPE_INTEGER64
V4L2_EXPOSURE_APERTURE_PRIORITY
V4L2_EXPOSURE_AUTO
V4L2_EXPOSURE_SHUTTER_PRIORITY
V4L2_FRMSIZE_TYPE_CONTINUOUS
V4L2_FRMSIZE_TYPE_DISCRETE
V4L2_FRMSIZE_TYPE_CONTINUOUS
VIDIOC_ENUM_FRAMEINTERVALS
VIDIOC_ENUM_FRAMESIZES
VIDIOC_G_EXT_CTRLS
VIDIOC_S_EXT_CTRLS

I am curious if anyone is working on v4l2?