Hans de Goede wrote: > > > On 04/17/2009 09:27 PM, Erik Andrén wrote: >> >> Hans de Goede wrote: >>> >>> On 04/16/2009 10:46 PM, Adam Baker wrote: >>>> On Thursday 16 Apr 2009, Hans de Goede wrote: >>>>> On 04/16/2009 12:26 AM, Adam Baker wrote: >>>>>> On Wednesday 15 Apr 2009, Hans de Goede wrote: >>>>>>> Currently only whitebalancing is enabled and only on Pixarts (pac) >>>>>>> webcams (which benefit tremendously from this). To test this with >>>>>>> other >>>>>>> webcams (after instaling this release) do: >>>>>>> >>>>>>> export LIBV4LCONTROL_CONTROLS=15 >>>>>>> LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so v4l2ucp& >>>>>> Strangely while those instructions give me a whitebalance control >>>>>> for the >>>>>> sq905 based camera I can't get it to appear for a pac207 based camera >>>>>> regardless of whether LIBV4LCONTROL_CONTROLS is set. >>>>> Thats weird, there is a small bug in the handling of pac207 >>>>> cams with usb id 093a:2476 causing libv4l to not automatically >>>>> enable whitebalancing (and the control) for cams with that id, >>>>> but if you have LIBV4LCONTROL_CONTROLS set (exported!) both >>>>> when loading v4l2ucp (you must preload v4l2convert.so!) and >>>>> when loading your viewer, then it should work. >>>>> >>>> I've tested it by plugging in the sq905 camera, verifying the >>>> whitebablance >>>> control is present and working, unplugging the sq905 and plugging in >>>> the >>>> pac207 and using up arrow to restart v4l2ucp and svv so I think I've >>>> eliminated most finger trouble possibilities. The pac207 is id >>>> 093a:2460 so >>>> not the problem id. I'll have to investigate more thoroughly later. >>>> >>> Does the pac207 perhaps have a / in its "card" string (see v4l-info >>> output) ? >>> if so try out this patch: >>> http://linuxtv.org/hg/~hgoede/libv4l/rev/1e08d865690a >>> >> >> I have the same issue as Adam when trying to test this with my >> gspca_stv06xx based Quickcam Web camera i. e no whitebalancing >> controls show up. I'm attaching a dump which logs all available >> pixformats and v4l2ctrls showing that libv4l is properly loaded. >> (And yes, LIBV4LCONTROL_CONTROLS is exported and set to 15). >> >> Best regards, >> Erik >> > > Ah, you are using v4l2-ctl, not v4l2ucp, and that uses > V4L2_CTRL_FLAG_NEXT_CTRL > control enumeration. My code doesn't handle V4L2_CTRL_FLAG_NEXT_CTRL > (which is > a bug). I'm not sure when I'll have time to fix this. Patches welcome, > or in > the mean time use v4l2ucp to play with the controls. > Actually, I've tried to use both without finding the controls. I've only tried with v4l2ucp v. 1.2. Is 1.3 necessary? Best regards, Erik > Regards, > > Hans > -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
