my version of libV4l is:
* media-libs/libv4l
Latest version available: 0.5.3
Latest version installed: 0.5.3
with jpeg format brightest and contrast also not working
I test with ekiga
Brian Johnson wrote:
> The brightness works on the older version since that comes before we
> got proper format switching working and it was using one of the hard
> coded bridge formats. anyways brightness/contrast do not work ewith
> raw bayer format because the bridge uses its color matrix to control
> those, the color matrix is what the bridge uses to convert the raw rgb
> values to yuv, and since the bridge passing through the raw bayer
> pattern as received from the sensor without converting to a yuv format
> brightness and contrast will not work with bayer format.
>
> There are two wys to get this working right first if you insmod the
> module with the jpeg=1 parameter
> (insmod ./sn9c20x.ko jpeg=1) libv4l should choose to use the jpeg
> format instead of bayer or make sure you are using version 0.5.8 or
> greater of libv4l whcih supports the bridges custom yuv format and
> will choose that over bayer
>
> 2009/3/14 Boris Borisov <[email protected]>:
>
>> Because I write a part of old driver, special decoder for 6270 cameras.
>> On new releases this is decoder is not included. In this case I use my
>> old copy of repository May 2008.
>> Because my implementations is using this functions (image processing)
>> access via sys-fs tuning picture (normalization) is very important .
>> New release is used for decoder v4l2convert but that is no very clear
>> solution for my situation because this is library some time is
>> generating core dump and stop production line (very often if is using
>> with V4L1). Also converter is get more resources CPU and memory. On my
>> visio systems based on Beagleboard the resources is very important for
>> robotic speed.
>> I post this issue because I can't solve for 20 minutes and not follow
>> from long time new commitments.
>> About git try with qgit or qgit4 graphics user interface program and
>> save the time for understanding git. Yes is possible to get old revision.
>>
>> мЕЛ ДЕО
>> Bobby
>>
>> Stefan Krastanov wrote:
>>
>>> Hello,
>>>
>>> On љ0C45:6270 with MT9V011 it's also not working(checked with
>>> v4l2ucp). I have reported it, but failed to give details - I was more
>>> interested in another problem.
>>>
>>> I have some time so I can check in exactly which version the support
>>> regresses but I will need at least some initial time interval in which
>>> to begin the search. And also, I'll be happy if you can tell me how to
>>> row back to old versions using git (based on date if it's possible) -
>>> if not I'll dig in the man page ;)
>>>
>>> Best Regards
>>> Stefan Krastanov
>>>
>>> 2009/3/14 Boris Borisov <[email protected] <mailto:[email protected]>>
>>>
>>>
>>> љ љ Hello,
>>> љ љ Can you check the brightness and contrast functions, because for
>>> љ љ me this
>>> љ љ functions is broken.
>>> љ љ Really i call sn9c20x_set_contrast with different values of brightness
>>> љ љ and contrast via sys-fs and V4l functions (ekiga) but brightness and
>>> љ љ contrast is not changed.
>>> љ љ On very old version (who I use) this functions is working.
>>>
>>> љ љ Best regards
>>> љ љ Bobby
>>>
>>>
>>>
>>>
>>>
>>>
>>
>
> >
>
>
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Lets make microdia webcams plug'n play, (currently plug'n pray)
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