Microsoft Windows CE 3.0  

CBaseOutputPin::DecideBufferSize

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Retrieves the number and size of buffers required for the transfer.

virtual HRESULT DecideBufferSize(
IMemAllocator *
pAlloc
,
ALLOCATOR_PROPERTIES *
ppropInputRequest
) PURE;

Parameters

pAlloc
Allocator assigned to the transfer.
ppropInputRequest
Requested allocator properties for count, size, and alignment, as specified by the ALLOCATOR_PROPERTIESstructure.

Return Values

Returns an HRESULTvalue.

Remarks

The CBaseOutputPin::DecideAllocatormember function calls this member function. You must override this member function in your derived class and call IMemAllocator::SetProperties.