Inside Macintosh: QuickTime Components /

Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Controlling Analog Video

VDGetSharpness

The VDGetSharpness function returns the current sharpness value. The sharpness value ranges from 0 to 65,535, where 0 represents no sharpness filtering and 65,535 represents full sharpness filtering. Higher values result in a visual impression of increased picture sharpness.

pascal VideoDigitizerError VDGetSharpness 
                              (VideoDigitizerComponent ci,
                               unsigned short *sharpness);

ci

Specifies the video digitizer component for the request. Applications obtain this reference from the Component Manager's OpenComponent function.

sharpness

Contains a pointer to an integer that is to receive the current sharpness value. The video digitizer component places the sharpness value into the field referred to by this parameter.

RESULT CODES

noErr	0	No error
digiUnimpErr	-2201	Function not supported

SEE ALSO

Your application can set the sharpness value by calling the VDSetSharpness function (described in the previous section). To obtain the recommended sharpness value, your application can call the VDGetVideoDefaults function (described on page 8-66).