CTransInPlaceFilter::CompleteConnect (Compact 2013)
3/26/2014
Reconnects the input or output pin if necessary.
Syntax
HRESULT CompleteConnect(
PIN_DIRECTION direction,
IPin* pReceivePin
);
Parameters
- direction
Pin direction.
- pReceivePin
Pointer to the output pin to which to connect.
Return Value
Returns NOERROR if successful; otherwise, returns VFW_E_NOT_IN_GRAPH if the filter is not part of a graph, or returns an HRESULT that indicates the error.
HRESULT can be one of the following standard constants, or other values not listed.
Value |
Description |
|---|---|
E_FAIL |
Failure. |
E_POINTER |
Null pointer argument. |
E_INVALIDARG |
Invalid argument. |
E_NOTIMPL |
Method is not supported. |
Remarks
This member function overrides the CTransformFilter::CompleteConnect member function. It is called by one of the pin classes at the end of a successful connection.
Because the input and output pins must both use the same allocator, this member function reconnects the opposite pin if necessary.
When the input pin is first connected, the output pin has not yet been connected and the downstream filter's allocator is unknown, so the allocator for the input pin is chosen to be the upstream pin's allocator.
However, when the transform filter's output pin is connected, it has access to the downstream filter's allocator and should force a reconnect on the input pin and offer that allocator.
When the input pin is reconnected, it forces a reconnect on the output pin if the allocator chosen for the input pin's connection differs from the output pin's connection.
This member function supplies the reconnection for either output or input pins.
Requirements
Header |
dshow.h, |
Library |
ole32.lib, |