CTransformFilter::DecideBufferSize (Compact 2013)
3/26/2014
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
Header |
dshow.h, |
Library |
ole32.lib, |