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IMemInputPin::NotifyAllocator (Compact 2013)

  • Article

3/26/2014

This method 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
    [in] 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
    [out] Flag to indicate if the samples from this allocator are read-only.

Return Value

Returns an HRESULT value that depends on the implementation.

HRESULT can 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 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 bReadOnly parameter is TRUE, all samples in the allocator are read-only and a copy must be made before modifying them.

Requirements

Header

dshow.h

Library

Strmiids.lib

See Also

Reference

IMemInputPin Interface