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IReferenceClock Interface (Compact 2013)

3/26/2014

This interface represents a system reference clock to be implemented by a filter in the filter graph and used by other filters.

When to Implement

Implement this interface if you are writing a filter that generates a system reference clock. Typically, this applies to audio renderer filters because audio sound boards usually contain a reference clock. Use the CBaseReferenceClock class to implement this interface.

When to Use

Use this interface on any filter to obtain reference clock notifications for a duration of elapsed time (both singular and repetitive), or to retrieve the current time.

Methods in Vtable Order

The following table shows the methods that appear in the Vtable beneath the standard COM methods inherited from IUnknown.

Method

Description

GetTime

Gets the current time.

AdviseTime

Requests an asynchronous notification that a duration has elapsed.

AdvisePeriodic

Creates a periodic advise request.

Unadvise

Cancels a request for notification.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

DirectShow Interfaces