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4/8/2010

Passes requests for allocator requirements downstream.

Syntax 

HRESULT GetAllocatorRequirements(
  ALLOCATOR_PROPERTIES* 
pProps 
);

Parameters

pProps

ALLOCATOR_PROPERTIESstructure containing the required size, count, and alignment of the allocator.

Return Value

Returns E_NOTIMPL if the filter's output pin is not connected. Otherwise, returns an HRESULTthat indicates whether the allocator properties were successfully received.

HRESULTcan be one of the following standard constants, or other values not listed.

Value Description

E_FAIL

Failure.

E_POINTER

Null pointer argument.

E_INVALIDARG

Invalid argument.

E_NOTIMPL

Method is not supported.

S_OK or NOERROR

Success.

Remarks

This member function overrides the CBaseInputPin::GetAllocatorRequirementsmember function and implements the IMemInputPin::GetAllocatorRequirementsmethod.

If the downstream input pin can supply allocator requirements, it does so.

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