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CBaseFilter.Run 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 Run method runs the filter. This method implements the IMediaFilter::Run method.

Syntax

HRESULT Run(
   REFERENCE_TIME tStart
);

Parameters

tStart

Reference time corresponding to stream time 0.

Return value

Returns S_OK if successful, or an HRESULT value indicating the cause of the error.

Remarks

If the filter is stopped, this method pauses the filter by calling the CBaseFilter::Pause method. It then calls the CBasePin::Run method on each of the filter's connected pins. Finally, it sets the CBaseFilter::m_State member variable to State_Running.

Stream time is calculated as the current reference time minus tStart. A media sample with a time stamp of zero should be rendered at time tStart.

Requirements

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

See also

CBaseFilter Class