Windows Mobile 6.5
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This optional method is used to suggest specific alignment or prefix requirements to an upstream filter.

HRESULT GetAllocatorRequirements(


[in] ALLOCATOR_PROPERTIES structure containing the required size, count, and alignment of the allocator.

Returns an HRESULT value. Returns E_NOTIMPL if not implemented.

Source filters that insist on their own allocator may use this method downstream to accommodate downstream filters' memory requirements for performance benefits.

Windows Embedded CEWindows CE 2.12 and later
Windows MobilePocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later
NoteMicrosoft 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

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