Janne Grunau wrote:
On Mon, Nov 28, 2011 at 06:51:05PM +0100, Luca Barbato wrote:
On 11/28/11 12:28 PM, Janne Grunau wrote:
>I have no idea what v4l2 drivers typically return for V4L2_FIELD_ANY
>but there are more interlaced formats than V4L2_FIELD_INTERLACED.
I can try to map/support all of them. But I just have progressive
usb cameras handy...
I was more thinking about erroring out on anything other than
_INTERLACED or _PROGRESSIVE. Handling V4L2_FIELD_INTERLACED_{TB,BT} and
setting the field order accordingly.
After looking at v4l2 driver source V4L2_FIELD_{TOP,BOTTOM} has to be
supported too. If the capture height is smaller than fullheight/2 just
one field is returned.
insert $curse about inconsistencies in V4L2 drivers
they were all consistent when they all only supported analog
PAL/NTSC grabber cards :)
I'd like to refresh this codebase soon anyway.
Go ahead, the function to determine the field order is dubious at best.
Janne
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