Sensoray 811 Windows SDK - Manual (Page 15)

int devid
);
Sets brightness, contrast, saturation and hue of the captured video.
Parameters
param
defines the parameter to set (MID811_LEVEL_CONTRAST,
MID811_LEVEL_BRIGHTNESS, MID811_LEVEL_SATURATION, MID811_LEVEL_HUE).
See see mid811types.h for definitions.
value
defines the value of selected parameter
devid
device id in the system (use 0 for first channel with a single board installed).
Returns
0 on success, negative value if error (see mid811types.h for error codes list).
MID811_API int S811_GetLevels(
int param,
int value,
int devid
);
Retrieves video levels.
Parameters
param
defines the parameter to get (MID811_LEVEL_CONTRAST,
MID811_LEVEL_BRIGHTNESS, MID811_LEVEL_SATURATION, MID811_LEVEL_HUE).
See see mid811types.h for definitions.
value
pointer to returned value of selected parameter
devid
device id in the system (use 0 for first channel with a single board installed).
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