CTransInPlaceInputPin.GetAllocator method
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The GetAllocator method retrieves the memory allocator proposed by this pin. This method implements the IMemInputPin::GetAllocator method.
Syntax
HRESULT GetAllocator(
IMemAllocator **ppAllocator
);
Parameters
-
ppAllocator
-
Receives a pointer to the allocator's IMemAllocator interface.
Return value
Returns an HRESULT value. Possible values include those shown in the following table.
| Return code | Description |
|---|---|
|
Success. |
|
No allocator is available. |
Remarks
If the filter's output pin is connected, this method requests an allocator from the downstream filter's input pin.
If the filter's output pin is not connected, this method creates a temporary allocator. Later, when the output pin is connected, the filter will reconnect the input pin and renegotiate the allocator.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|