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CBaseInputPin::NotifyAllocator (Compact 2013)

  • Article

3/26/2014

Notifies the input pin as to which allocator the output pin is actually going to use.

Syntax

HRESULT NotifyAllocator(
  IMemAllocator* pAllocator,
  BOOL bReadOnly
);

Parameters

  • pAllocator
    Pointer to the IMemAllocator object to use.

    This might or might not be the same IMemAllocator object that the input pin provided in the IMemInputPin::GetAllocator method (the output pin could provide its own allocator).

  • bReadOnly
    Flag to indicate if the samples from this allocator are read-only.

Return Value

Default implementation returns NOERROR.

Remarks

This member function implements the IMemInputPin::NotifyAllocator method, which is called by the connected output pin to inform the input pin of the chosen allocator for the memory transport.

Override this member function if your filter cares about this information.

By default, this sets the m_pAllocator data member to the allocator interface passed in after adding a reference count to that interface.

Requirements

Header

dshow.h,
Streams.h

Library

ole32.lib,
Ole32auth.lib,
Strmbase.lib,
Strmiids.lib,
uuid.lib

See Also

Reference

CBaseInputPin Class