CPosPassThru.GetCurrentPosition 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 GetCurrentPosition method retrieves the current position, relative to the total duration of the stream. This method implements the IMediaSeeking::GetCurrentPosition method.

Syntax

HRESULT GetCurrentPosition(
   LONGLONG *pCurrent
);

Parameters

pCurrent

Pointer to a variable that receives the current position, in units of the current time format.

Return value

Returns an HRESULT value. Possible values include those shown in the following table.

Remarks

This method calls the CPosPassThru::GetMediaTime method to retrieve the most recent position. If GetMediaTime fails, the method calls IMediaSeeking::GetCurrentPosition on the connected pin.

The GetMediaTime method fails by default in the base class. If your filter caches the current position, override GetMediaTime to return the cached value.

Requirements

See also

CPosPassThru Class