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IMemInputPin::ReceiveCanBlock method

The ReceiveCanBlock method determines whether calls to the IMemInputPin::Receive method might block.

Syntax


HRESULT ReceiveCanBlock();

Parameters

This method has no parameters.

Return value

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

Return codeDescription
S_FALSE

The pin will not block on a call to Receive

S_OK

The pin might block on a call to Receive.

 

Remarks

If this method returns S_FALSE, calls to the Receive method are guaranteed not to block. Otherwise, they might block. An upstream filter can use this method to determine its threading strategy. If calls to Receive can block, the upstream filter might decide to use a worker thread that buffers data.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

See also

Error and Success Codes
IMemInputPin Interface

 

 

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