CTransformOutputPin::DecideBufferSize

The DecideBufferSize method sets the buffer requirements.

Syntax

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

Parameters

pAlloc

Pointer to the allocator's IMemAllocator interface.

ppropInputRequest

Pointer an ALLOCATOR_PROPERTIES structure that contains the input pin's buffer requirements.

Return Value

Returns an HRESULT value.

Remarks

This method overrides the CBaseOutputPin::DecideBufferSize method. It calls the filter's pure virtual CTransformFilter::DecideBufferSize method, which the filter's derived class must implement.

See Also

• CTransformOutputPin Class