Greetings,
On 25-May-01 Jeff Garzik wrote:
>
> Sorry this is a slippery slope argument and it won't wash.
>
> The kernel is intended as the arbiter between userspace and hardware,
> and userspace and userspace. Format conversion has nothing to do with
> arbitration.
>
> Format conversion in kernelspace is far less flexible than userspace:
> you cannot replace your algorithms at will nor fix bugs at will.
Well, the kernel is in source form too. So I donīt see why canīt fix that
too.
> Finally, the example you describe is invalid. If your tool is doing
> -two- format conversions, then [again] the tool should be fixed.
No, the conversion is in two separate places; one to get something sensible
from the native format which doesnīt fit anything in the current V4L API. Or
do you suggest extending this API with every oddball format that comes
along? Please no...
> The
> kernel most definitely should not work around stupid shortcomings of
> userspace software.
*pfrt*. I already had to. And Iīm sure Iīm not the first to have a
īfix-in-kernelī.
>> Anyway, I am not going to debate this any further at this point.
>> Johannes,
>> please remove my webcam driver from the USB source tree,
>
> whatever. I don't see Alan or Linus accepting such a change, even if
> Johannes does.
Itīs not a change, but an addition. Iīm still somewhat ticked off by the
fact that the current drivers have such conversion routines, and nobody did
anything about it. And now suddenly this becomes THE issue to reject a
driver. Itīs not fair. Iīm not a paranoid person, but I am beginning to
wonder if this driver is being blocked for other reasons, like having a
binary only part (which is purely optional anyway).
>> until the software
>> YUV/RGB conversion has been removed from ALL other video devices
>> (preferably
>> all at the same time).
>
> Send a patch for this instead!
If I do that now, hell will break loose. To me, this course of action is
perfectly acceptable for 2.5; but not while 2.4.* is slowly making its way
to more and more distributions and desktop machines. It would instantly
break all USB webcams.
> Format conversion should not be in the kernel...
I still maintain that this should have been fixed a long time ago then. It
would have saved me the disappointment of working 1.5 years on this, only to
be rejected because of some bad-ass policy nobody adhered to in the first
place.
- Nemosoft
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