Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Working With Video Channels

SGGetSrcVideoBounds

The SGGetSrcVideoBounds function allows you to determine the size of the source video boundary rectangle. This rectangle defines the size of the source video image.
For video channel components that work with video digitizer components, this rectangle corresponds to the video digitizer's active source rectangle (see the chapter "Video Digitizer Components" in this book for more information).

pascal ComponentResult SGGetSrcVideoBounds (SGChannel c, Rect *r);

c

Specifies the reference that identifies the channel for this operation. You obtain this reference from the SGNewChannel function, described on page 5-29.

r

Contains a pointer to a rectangle structure that is to receive information about the source video boundary rectangle.

RESULT CODE

paramErr

-50

Invalid parameter specified

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