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Chapter 5 - Sequence Grabber Components / Sequence Grabber Components Reference

Sequence Grabber Component Functions / Working With Channel Characteristics

SGGetChannelUsage

The SGGetChannelUsage function allows you to determine how a channel is to be used by the sequence grabber component.

pascal ComponentResult SGGetChannelUsage (SGChannel c,
                                          long *usage);

c

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

usage

Contains a pointer to flags indicating how the channel is to be used. More than one flag may be set to 1; unused flags are set to 0. The following flags are defined:

seqGrabRecord

Indicates that the channel is used during record operations.

seqGrabPreview

Indicates that the channel is used during preview operations.

seqGrabPlayDuringRecord

Indicates that the sequence grabber component plays the data captured by this channel during a record operation.

SEE ALSO

You establish a channel's usage by calling the SGSetChannelUsage function, described in the previous section.