Inside Macintosh: QuickTime Components /

Chapter 6 - Sequence Grabber Channel Components / Sequence Grabber Channel Components Reference

Functions / Controlling Sequence Grabber Channel Components

SGIdle

The SGIdle function provides processing time to your channel component.

pascal ComponentResult SGIdle (SeqGrabComponent s);

s

Identifies the sequence grabber component that has connected to your channel component.

DESCRIPTION

After starting a preview or record operation, the application calls the sequence grabber component's SGIdle function as often as possible. The sequence grabber component then calls your SGIdle function. This continues until the calling application stops the operation by calling the SGStop sequence grabber function.

Your SGIdle function reports several status and error conditions by means of its result code. If your component returns a nonzero result code during a record operation, the application should still call the SGStop function (described on page 6-41) so that the sequence grabber component can store the data it has collected.

RESULT CODES

File Manager errors
Memory Manager errors

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