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Chapter 8 - Video Digitizer Components / Video Digitizer Components Reference

Video Digitizer Component Functions / Setting Source Characteristics

VDGetMaxSrcRect

The VDGetMaxSrcRect function returns the maximum source rectangle.

pascal VideoDigitizerError VDGetMaxSrcRect
                                  (VideoDigitizerComponent ci,
                                    short inputStd, 
                                    Rect *maxSrcRect);

ci

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

inputStd

A short integer that specifies the input video signal associated with this maximum source rectangle.

maxSrcRect

Contains a pointer to a rectangle that is to receive the size and location information for the maximum source rectangle.

DESCRIPTION

The maximum source rectangle defines the spatial boundaries of the input video signal. All other rectangles--active source rectangle, digitizer rectangle, and vertical blanking rectangle--are defined relative to the maximum source rectangle. For a complete discussion of the relationship between these rectangles, see "About Video Digitizer Components," which begins on page 8-3.

All video digitizer components must support this function.

RESULT CODES

noErr	0	No error
qtParamErr	-2202	Invalid parameter value

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