CBaseInputPin::CheckStreaming
Verifies conditions for continuing with a streaming operation.
virtual HRESULT CheckStreaming( );
Parameters
None.
Return Values
Returns one of the following HRESULT values, depending on the state.
| Value | Description |
|---|---|
| S_FALSE | Currently in flushing state. |
| S_OK | Receive or EndOfStream operations can safely proceed. |
| VFW_E_RUNTIME_ERROR | Run-time error occurred while processing a previous sample. |
| VFW_E_WRONG_STATE | Filter is in the State_Stopped state. |
Remarks
Conditions checked in this member function include whether the filter is connected, if it is in an active state, if it is not currently flushing data, and if it has not just issued a run-time error. If all these conditions pass, it returns S_OK.
You can override this member function to add restrictions defined by your derived class. The overriding member function should call this base class implementation to check for conditions here as well.
This function member should be called from any override of the CBaseInputPin::Receive or CBasePin::EndOfStream member function (or they should do some equivalent check).
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.
Header:
Last updated on Wednesday, April 13, 2005
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