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CTransformOutputPin::DecideBufferSize

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Windows Embedded CE 6.0 R3

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_PROPERTIES structure.

Return Value

Returns an HRESULT value.

Remarks

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

This member function is called from the CBaseOutputPin class 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