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Using Sequence Grabber Channel Components

This chapter gives an overview of the services your channel component needs to provide. Your component will primarily be used to preview and record digital data. Your component must also make calls to application-defined callback functions if so directed. Finally, your component must provide utility functions that will perform default procedures for the application’s callback functions.

In response to application requests, sequence grabber components can use channel components in two ways: to preview digitized data for the user or to record captured data in a QuickTime movie. Applications can use previewing to allow the user to prepare to make a recording. Applications that use previewing can move directly from the preview operation to a record operation, without stopping the process.

The next two sections provide an overview of preview and record operations. A third section discusses the callback functions that are supported by some channel components.

Contents:

Previewing
Configuring Sequence Grabber Channel Components
Controlling Sequence Grabber Channel Components
Recording
Working With Callback Functions
Working With Channel Devices
Utility Functions for Sequence Grabber Channel Components

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