Phytec eGrabber-4plus, Hardware Manual

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eGrabber-4plus
140 
PHYTEC Meßtechnik GmbH 2004 L-608e_4
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Reading the brightness setting
short Get_Brightness(WORD nDevNo);
return value: Content of the register holding the value for brightness in
the video processor.
With this function you can ascertain the actual brightness parameter of
the video processor.
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Setting the contrast
void Set_Contrast(WORD nDevNo, WORD nContr);
nContr: contrast (0..511)
This function specifies the contrast of the image. The contrast is a
constant factor, which is multiplied in the video processor
(corresponding to the scaling) with the brightness of the pixel. The
factor has a range of 0 % to 236.57 % :
nContr = contrast [%]
.
2,1598 [1/%]
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Reading the contrast setting
WORD Get_Contrast(WORD nDevNo);
return value: actual contrast value
With this function you can ascertain the actual value of the contrast
register of the video processor. The returned value is an integer
number.