IMemInputPin::GetAllocatorRequirements
| Microsoft DirectShow 9.0 |
IMemInputPin::GetAllocatorRequirements
The GetAllocatorRequirements method retrieves the allocator properties requested by the input pin.
Syntax
HRESULT GetAllocatorRequirements( ALLOCATOR_PROPERTIES *pProps );
Parameters
pProps
[in] Pointer to an ALLOCATOR_PROPERTIES, structure which is filled in with the requirements.
Return Values
Returns an HRESULT value. Possible values include those shown in the following table.
| Return code | Description |
| 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
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also