It would appear (via my very scattered testing) that the black screen problem with the drivers (That is to say, xawtv runs but all it displays is a black window, and things like streamer do not capture still frames) is related to the USB level of the kernel.
I was unable to get my QC Express to work in 2.4.0 or 2.4.2 plain, however 2.2.19 and 2.4.2 AC9 and later (ac9 at work and ac25 at home) both seem to work with minimal problems using the CVS versions.
Hope this helps others who were experiencing problems with this, there seem to be a number of posts on the forums looking for solutions.
-m
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If that is the case, than the USB-Driver must be
fixed in 2.4.3. I got the QC Driver from CVS
and got it running. The problem is now, that i
cant control brightnes, white ballance, hue or
color. But i get pictures with every software
i tried, which are gqcam xawtv and webcam the
latest was bundled with xawtv, so i was not
surprised that it worked after xawtv did.
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Anonymous
-
2001-04-06
The problem with the control for brightness, hue, color, contrast, etc. is that the driver do not support these operations...
If you look at the file quickcam.c : quickcam_ioctl()...
Near VIDIOCGPIC and VIDIOCSPIC :
When you call VIDIOCGPIC, the driver send you default values, not the ones used by the camera.
When you call VIDIOCSPIC, the driver just copy the struct video_pict from the user memory to the kernel memory and just flush it!! ???
So to control these setting, we have to write code to set these parameters to the camera.
I'm trying to do that with my camera, it is a pb0100 sensor model, but I'm not sure now which register to modify, but I'm working on it ...
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
It would appear (via my very scattered testing) that the black screen problem with the drivers (That is to say, xawtv runs but all it displays is a black window, and things like streamer do not capture still frames) is related to the USB level of the kernel.
I was unable to get my QC Express to work in 2.4.0 or 2.4.2 plain, however 2.2.19 and 2.4.2 AC9 and later (ac9 at work and ac25 at home) both seem to work with minimal problems using the CVS versions.
Hope this helps others who were experiencing problems with this, there seem to be a number of posts on the forums looking for solutions.
-m
If that is the case, than the USB-Driver must be
fixed in 2.4.3. I got the QC Driver from CVS
and got it running. The problem is now, that i
cant control brightnes, white ballance, hue or
color. But i get pictures with every software
i tried, which are gqcam xawtv and webcam the
latest was bundled with xawtv, so i was not
surprised that it worked after xawtv did.
The problem with the control for brightness, hue, color, contrast, etc. is that the driver do not support these operations...
If you look at the file quickcam.c : quickcam_ioctl()...
Near VIDIOCGPIC and VIDIOCSPIC :
When you call VIDIOCGPIC, the driver send you default values, not the ones used by the camera.
When you call VIDIOCSPIC, the driver just copy the struct video_pict from the user memory to the kernel memory and just flush it!! ???
So to control these setting, we have to write code to set these parameters to the camera.
I'm trying to do that with my camera, it is a pb0100 sensor model, but I'm not sure now which register to modify, but I'm working on it ...
This seems to be same problem I wrote about in other thread "Image istoo dark by default".