IVPNotify Interface

IVPNotify enables you to control the properties of a filter that uses a video port. This interface derives from the IVPBaseNotify interface. See also IVPBaseConfig and IVPConfig.

When to Implement

The Overlay Mixer filter implements this interface so you won't need to implement it in most cases. Implement this interface when you need to alter the default behavior.

When to Use

Use this interface in your application when you need to access video port properties.

Methods in Vtable Order

IUnknown methods	Description
QueryInterface	Retrieves pointers to supported interfaces.
AddRef	Increments the reference count.
Release	Decrements the reference count.

IVPNotify methods	Description
SetDeinterlaceMode	Sets the deinterlacing mode (such as bob or weave).
GetDeinterlaceMode	Retrieves the deinterlacing mode (such as bob or weave).

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IVPNotify::GetDeinterlaceMode

IVPNotify Interface

Retrieves the mode (such as bob or weave).

HRESULT GetDeinterlaceMode(
  AMVP_MODE *pmode
  ) PURE;

Parameters

pmode

[out] Pointer to the retrieved mode. This value is a member of the AMVP_MODE enumerated data type.

Return Values

Returns an HRESULT value that depends on the implementation of the interface.

The current DirectShow implementation returns NOERROR for success or E_INVALIDARG if the argument is not valid.

Remarks

This method is not currently implemented and returns E_NOTIMPL.

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IVPNotify::SetDeinterlaceMode

IVPNotify Interface

Sets the mode (such as bob or weave).

HRESULT SetDeinterlaceMode(
  AMVP_MODE mode
  ) PURE;

Parameters

mode

[in] Specified mode. This value is a member of the AMVP_MODE enumerated data type.

Return Values

Returns an HRESULT value that depends on the implementation of the interface.

The current DirectShow™ implementation returns NOERROR for success or E_INVALIDARG if mode is not a member of the AMVP_MODE enumerated data type.

Remarks

This method is not currently implemented and returns E_NOTIMPL.

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