Hello,
I have the ov511 driver installed on a RH7.2 linux. I have been able
to succesfully loop back the captured images of my HawkEye UC310
camera.
How ever when ever i want to set the brightness or contrast or depth
of the capture picture it always is returning -1. I am appending a
portion of the code for clarification
struct video_picture pic;
pic.palette = VIDEO_PALETTE_YUV420;
pic.depth = 24;
pic.brightness = 120;
pic.contrast = 100;
pic.hue =0;
pic.colour =100;
pic.whiteness = 0;
if( ioctl(cam->dev, VIDIOCSPICT,&pic ) == -1)
{
perror("\n*********CSPICT**************:\n");
}
On the other hand the same settings can be easily changed using xawtv.
I have tried to go through the xawtv code but it dosent seem to do
anything special with the ioct calls (they use xioctl which actually is
a frontend for a simple ioct call).
Is there any particular thing that i have to do before using this
ioctl call (I have used cam->dev= open("/dev/video0",O_RDWR) ;) ). How
can i set these values?
regards
Affan Ahmed.
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