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IMemInputPin::GetAllocatorRequirements method

The GetAllocatorRequirements method retrieves the allocator properties requested by the input pin.

Syntax


HRESULT GetAllocatorRequirements(
  [in]  ALLOCATOR_PROPERTIES *pProps
);

Parameters

pProps [in]

Pointer to an ALLOCATOR_PROPERTIES, structure which is filled in with the requirements.

Return value

Returns an HRESULT value. Possible values include those shown in the following table.

Return codeDescription
S_OK

Success

E_NOTIMPL

Not implemented

E_POINTER

NULL pointer argument

 

Remarks

When an output pin initializes a memory allocator, it can call this method to determine whether the input pin has any buffer requirements. The input pin is not required to implement this method. If the filter has specific alignment or prefix requirements, it should implement this method.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Strmif.h (include Dshow.h)

Library

Strmiids.lib

See also

Error and Success Codes
IMemInputPin Interface

 

 

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