Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Configuring Sequence Grabber Components

SGGetAlignmentProc

The SGGetAlignmentProc function allows you to obtain information about the best screen positions for a sequence grabber's video image in terms of appearance and maximum performance.

pascal ComponentResult SGGetAlignmentProc (SeqGrabComponent s, 
                           AlignmentProcRecordPtr alignmentProc);

s

Specifies the component instance that identifies your connection to the sequence grabber component. You obtain this value from the Component Manager's OpenDefaultComponent or OpenComponent function.

alignmentProc

Contains a pointer to an Image Compression Manager alignment function structure. The sequence grabber places its alignment information into
this structure.

DESCRIPTION

You may use the SGGetAlignmentProc function to retrieve information about the best screen positions for the sequence grabber's window. The sequence grabber returns information that can be used by the Image Compression Manager's alignment functions (see the chapter "Image Compression Manager" in Inside Macintosh: QuickTime for more information about these functions). By using this alignment information, you can place the sequence grabber's window in a position that allows for optimal display performance.

Main | Top of Section | What's New | Apple Computer, Inc. | Find It | Feedback | Help