IMemInputPin::ReceiveCanBlock
This method determines if the implementation of the IMemInputPin::Receive method might block on the connected output pin.
HRESULT ReceiveCanBlock(void);
Parameters
None.
Return Values
Can return any HRESULT value. The following specific success values can be returned.
| Value | Description |
|---|---|
| S_FALSE | Input pin will not block on a Receive method. |
| S_OK | Input pin might block on a Receive method. |
Remarks
An output pin from a filter might require notification if its thread might be blocked when it calls the Receive method on the connected input pin. For example, a source filter might prefer to keep reading and buffering data rather than to be blocked, and may choose to start another thread to wait on the blocking Receive method.
If your implementation of Receive calls a downstream filter's Receive method on the same thread, the application will block if that filter blocks, and this method must indicate that.
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.
See Also
Last updated on Wednesday, April 13, 2005
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