CTransformFilter::DecideBufferSize (Windows Embedded CE 6.0)
1/6/2010
Sets the number and size of buffers required for the transfer.
Syntax
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 Value
Returns an HRESULT value.
Remarks
This member function is called by the CTransformOutputPin::DecideBufferSize member function.
Override and implement this member function to call the CMemAllocator::SetProperties member function with appropriate values for the output stream.
This call might fail if the allocator cannot satisfy the request.
Requirements
| Windows Embedded CE | Windows CE 2.12 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 |