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CTransInPlaceInputPin.GetAllocatorRequirements method

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[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

The GetAllocatorRequirements method retrieves the allocator properties requested by the pin. This method implements the IMemInputPin::GetAllocatorRequirements method.

Syntax

HRESULT GetAllocatorRequirements(
   ALLOCATOR_PROPERTIES *pProps
);

Parameters

pProps

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 code Description
S_OK
 Success
E_NOTIMPL
 The output pin is not connected, or the downstream input pin does not support the method.
E_POINTER
 NULL pointer argument

Remarks

If the output pin is connected, this method passes the call to the downstream input pin. Otherwise, it returns E_NOTIMPL.

Requirements

Requirement Value
Header
Transip.h (include Streams.h)
Library
Strmbase.lib (retail builds);
Strmbasd.lib (debug builds)

See also

CTransInPlaceInputPin Class