CBaseMediaFilter::Run

  • Article

Transitions the filter to State_Running state if it is not in this state already.

HRESULT Run (
  REFERENCE_TIME tStart
);

Parameters

  • tStart
    Reference time value corresponding to stream time 0.

Return Values

Returns an HRESULT value.

Remarks

If the filter is in State_Stopped state, the CBaseMediaFilter::Pause member function is called first to transition the filter to State_Paused state, which has the effect of activating any of the filter's connected pins. If any pin returns a failure return code from its CBasePin::Active member function, the function fails and the state is not changed. If this member function succeeds, the filter's m_State member variable is set to State_Running. This member function holds the filter's lock.

Filters should derive their filters from CBaseFilter and not from CBaseMediaFilter, so filters will not likely use this member function. Use CBaseFilter::Run instead.

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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