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CBaseOutputPin::DecideBufferSize

  • Article

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_PROPERTIES structure.

Return Values

Returns an HRESULT value.

Remarks

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

Requirements

DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
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Last updated on Wednesday, April 13, 2005

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