Hello, I accidently realized today that I was using white balance control in wrong way. As far as I understand we've got V4L2_CID_AUTO_WHITE_BALANCE which activate auto white balance adjustment in runtime, V4L2_CID_DO_WHITE_BALANCE_TEMPERATURE specifying absolute kelvin value but can't get what V4L2_CID_DO_WHITE_BALANCE is for. I think after issuing V4L2_CID_AUTO_WHITE_BALANCE and V4L2_CID_WHITE_BALANCE_TEMPERATURE, the white balance functionality works immediately. Isn't it right? What exactly is the button type V4L2_CID_DO_WHITE_BALANCE for? Because the V4L2 API document says that "(the value is ignored)". Does that mean that even we have issued V4L2_CID_AUTO_WHITE_BALANCE and V4L2_CID_WHITE_BALANCE_TEMPERATURE, we can't see the white balance working at that moment? And one more thing. If I want to serve several white balance presets, like cloudy, dawn, sunny and so on, what should I do? I think it should be supported as menu type, but most of drivers are using white balance CID with integer type...then what should I do? Define preset names with kelvin number like this? #define WB_CLOUDY 8000 Pretty confusing... anyone knows what should I do? Nate -- 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
