Inside Macintosh: QuickTime Components /

Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Video Channel Callback Functions

SGGetVideoBottlenecks

The SGGetVideoBottlenecks function allows you to determine the callback functions that have been assigned to a video channel.

pascal ComponentResult SGGetVideoBottlenecks (SGChannel c,
                                              VideoBottles *vb);

c

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

vb

Contains a pointer to a video bottlenecks structure, described on page 5-100. The SGGetVideoBottlenecks function sets the fields of that structure to indicate the callback functions that have been assigned to this video channel. You must set the procCount field in the video bottlenecks structure to 9.

SEE ALSO

You assign callback functions to a video channel by calling the SGSetVideoBottlenecks function, which is described in the previous section.

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