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CBaseReferenceClock.SetTimeDelta method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The SetTimeDelta method adjusts the internal clock time.

Syntax

HRESULT SetTimeDelta(
  [ref] const REFERENCE_TIME &TimeDelta
);

Parameters

TimeDelta [ref]

Amount to adjust the clock time, in 100-nanosecond units. A positive value moves the clock forward, and a negative value moves the clock backward.

Return value

Returns S_OK.

Remarks

The derived class can use this method to adjust the internal clock, if it drifts from the device that is providing timing information.

The CBaseReferenceClock::GetTime method never returns decreasing values. If you adjust the clock backward, GetTime returns the previous value until the clock reaches that value again.

Requirements

Requirement Value
Header
Refclock.h (include Streams.h)
Library
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CBaseReferenceClock Class