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4/8/2010

Determines the number and size of buffers required.

Syntax 

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

Parameters

pAlloc

Allocator assigned to the transfer.

ppropInputRequest

Requested allocator properties for count, size, and alignment, as specified by the ALLOCATOR_PROPERTIESstructure.

Return Value

Returns an HRESULTvalue.

Remarks

This member function overrides the CBaseOutputPin::DecideBufferSizemember function and calls the pure virtual CTransformFilter::DecideBufferSizemember function, which your derived class must override and implement.

This member function is called from the CBaseOutputPinclass during the connection process.

Requirements

Windows Embedded CE Windows CE 2.12 and later
Windows Mobile Windows Mobile Version 5.0 and later
Note Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements
For more information, see Setting Up the Build Environment,
Version 2.12 requires DXPAK 1.0 or later