CSourceSeeking.GetPositions method

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[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetPositions method retrieves the current position and the stop position. This method implements the IMediaSeeking::GetPositions method.

Syntax

HRESULT GetPositions(
   LONGLONG *pCurrent,
   LONGLONG *pStop
);

Parameters

pCurrent

Pointer to a variable that receives the start position.

pStop

Pointer to a variable that receives the stop position.

Return value

Returns S_OK.

Remarks

For the pCurrent parameter, this method returns the value of the CSourceSeeking::m_rtStart member variable, which represents the latest seek time, not the current streaming position. However, when an application calls IMediaSeeking::GetPositions through the filter graph manager, the values typically come from a renderer filter, not a source filter.

Requirements

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

See also

CSourceSeeking Class