IPin::ReceiveConnection
| Microsoft DirectShow 9.0 |
IPin::ReceiveConnection
The ReceiveConnection method accepts a connection from another pin.
Applications should not call this method. This method is called by other filters during the pin connection process.
Syntax
HRESULT ReceiveConnection( IPin *pConnector, const AM_MEDIA_TYPE *pmt );
Parameters
pConnector
[in] Pointer to the connecting pin's IPin interface.
pmt
[in] Pointer to an AM_MEDIA_TYPE structure that specifies the media type for the connection.
Return Value
Returns an HRESULT value. Possible values include the following.
| Value | Description |
| S_OK | Success. |
| E_POINTER | Null pointer argument. |
| VFW_E_ALREADY_CONNECTED | The pin is already connected. |
| VFW_E_NOT_STOPPED | Cannot connect while filter is active. |
| VFW_E_TYPE_NOT_ACCEPTED | The specified media type is not acceptable. |
Remarks
When an output pin connects, it calls this method on the input pin. The input pin should verify that the specified media type is acceptable. It may also need to check for other connection requirements specific to the owning filter. If the connection is suitable, the input pin should return S_OK, and also do the following:
- store the media type, and return the same type in the IPin::ConnectionMediaType method.
- store the output pin's IPin interface (pConnector), and return this pointer in the IPin::ConnectedTo method
If the connection is unsuitable, the pin should return an error code.
The CBasePin class implements the basic framework for this method, including storing the media type and IPin pointers.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also