#include <pwc-ioctl.h>
Set mode to one of the PWC_WB_* values above. red and *blue are the respective gains of these colour components inside the camera; range 0..65535 When 'mode' == PWC_WB_MANUAL, 'manual_red' and 'manual_blue' are set or read; otherwise undefined. 'read_red' and 'read_blue' are read-only.
1.5.1