After a starting an analog capture on the HVR-1600 or after every analog
channel change, this, empirically for me, gets rid of the junk at the
top of the screen:
# v4l2-dbg -d /dev/video1 -R type=host,chip=0,min=0x2c40474,max=0x2c40477
ioctl: VIDIOC_DBG_G_REGISTER
00 04 08 0C 10 14 18
1C
02c40460: 181e7014
# v4l2-dbg -d /dev/video1 -r type=host,chip=0,reg=0x2c40474,val=0x1e1e701a
register 0x2c40474 set to 0x1e1e701a
And empirically, this centers the screen up:
# v4l2-dbg -d /dev/video1 -R type=host,chip=0,min=0x2c40470,max=0x2c40473
ioctl: VIDIOC_DBG_G_REGISTER
00 04 08 0C 10 14 18
1C
02c40460: 5b2d007a
# v4l2-dbg -d /dev/video1 -r type=host,chip=0,reg=0x2c40470,val=0x5b2d0080
register 0x2c40470 set to 0x5b2d0080
(Although I can't tell if it squashes the image a little horizontally as well.)
Anyway, for NTSC input, the cx18-av-core obviously needs a little more
setup after a channel change. I'll try and look into it.
-Andy
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