 Important: |
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| This is retired content. This content is outdated and is no longer being maintained. It is provided as a courtesy for individuals who are still using these technologies. This content may contain URLs that were valid when originally published, but now link to sites or pages that no longer exist. |
Verifies conditions for continuing with a streaming operation.
Syntax
virtual HRESULT CheckStreaming( ); |
Parameters
None.
Return Value
Returns one of the following HRESULTvalues, depending on the state.
| Value | Description |
|---|---|
|
S_FALSE |
Currently in flushing state. |
|
S_OK |
Receive or EndOfStream operations can safely proceed. |
|
Run-time error occurred while processing a previous sample. |
|
|
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::Receiveor CBasePin::EndOfStreammember function (or they should do some equivalent check).
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have
different include file and Library requirements
For more information, see Setting Up the Build Environment,Version 2.12 requires DXPAK 1.0 or later |