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Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Controlling Color

VDGetInputColorSpaceMode

The VDGetInputColorSpaceMode function allows applications to determine whether a digitizer is operating in color or grayscale mode.

pascal VideoDigitizerError VDGetInputColorSpaceMode
                               (VideoDigitizerComponent ci,
                                 short *colorSpaceMode);

ci

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

colorSpaceMode

Contains a pointer to a value that indicates whether the digitizer is operating in color or grayscale mode. The following values are valid:

0

Grayscale digitization

1

Color digitization

DESCRIPTION

Applications can determine whether a digitizer component supports grayscale or color digitization by examining the digitizer component's input capability flags. Specifically, if the digiInDoesColor flag is set to 1, the digitizer component supports color digitization. Similarly, if the digiInDoesBW flag is set to 1, the digitizer component supports grayscale digitization. Applications can use the VDGetCurrentFlags function (described on page 8-25) to obtain the input capability flags of a digitizer component.

RESULT CODES

noErr	0	No error
digiUnimpErr	-2201	Function not supported
qtParamErr	-2202	Invalid parameter value

SEE ALSO

Applications can choose between color and grayscale digitization by calling the VDSetInputColorSpaceMode function, which is described in the previous section.

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