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Notifies the input pin as to which allocator the output pin is actually going to use.
HRESULT NotifyAllocator( IMemAllocator * pAllocator , BOOL bReadOnly );
Parameters
- pAllocator
- [in] Pointer to the IMemAllocatorobject to use. This might or might not be the same IMemAllocatorobject that the input pin provided in the IMemInputPin::GetAllocatormethod (the output pin could provide its own allocator).
- bReadOnly
- [out] Flag to indicate if the samples from this allocator are
read-only.
Return Values
Returns an HRESULTvalue that depends on the implementation. HRESULTcan be one of the following standard constants, or other values not listed.
E_FAIL Failure. E_POINTER Null pointer argument. E_INVALIDARG Invalid argument. E_NOTIMPL Method isn't supported. S_OK or NOERROR Success. Remarks
This method is called by the connecting output pin to notify the pin on which this interface is implemented of the allocator it chooses to use for transporting media samples. If the bReadOnlyparameter is TRUE, all samples in the allocator are read-only and a copy must be made before modifying any of them.