IMemInputPin::GetAllocator method (strmif.h)

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The GetAllocator method retrieves the memory allocator proposed by this pin. After the allocator has been selected, this method returns a pointer to the selected allocator.

Syntax

HRESULT GetAllocator(
  [out] IMemAllocator **ppAllocator
);

Parameters

[out] ppAllocator

Receives a pointer to the allocator's IMemAllocator interface. The caller must release the interface.

Return value

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

Remarks

When an output pin connects to an input pin, it negotiates with the input pin to decide on a memory allocator. The output pin calls this method to retrieve the input pin's proposed allocator. It calls the IMemInputPin::NotifyAllocator method to specify which allocator it selected.

If this method succeeds, the IMemAllocator interface has an outstanding reference count. Be sure to release it when you are done.

Requirements

See also

Error and Success Codes

IMemInputPin Interface