IAMClockAdjust::SetClockDelta method (strmif.h)

Article
02/22/2024

[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetClockDelta method adjusts the clock time.

Syntax

HRESULT SetClockDelta(
  [in] REFERENCE_TIME rtDelta
);

Parameters

[in] rtDelta

Specifies the amount by which to adjust the clock, as a REFERENCE_TIME value. A positive value moves the clock forward, and a negative value moves the clock backward.

Return value

Returns S_OK or an HRESULT error code.

Remarks

The time values returned by IReferenceClock::GetTime are monotonically increasing. If you set the clock back, GetTime continues to report the old time until the internal clock catches up.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	strmif.h (include Dshow.h)
Library	Strmiids.lib