IVPNotify2 Interface

IVPNotify2 enables you to control the synchronization properties of a filter that uses a video port. This interface derives from the IVPNotify interface. See also IVPBaseNotify, IVPBaseConfig, and IVPConfig.

Use this interface to manipulate the video color controls involved in mixing various video streams.

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.

IVPNotify2 methods	Description
SetVPSyncMaster	Sets the VideoPort as a sync master of the VGA (the vsync of the VGA is controlled by the VideoPort).
GetVPSyncMaster	Checks whether the VideoPort is the sync master of the VGA.

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IVPNotify2::GetVPSyncMaster

IVPNotify2 Interface

Retrieves the flag specifying whether the VideoPort is the sync master of the VGA (the vsync of the VGA is controlled by the VideoPort).

HRESULT GetVPSyncMaster(
  BOOL bVPSyncMaster
  ) PURE;

Parameters

bVPSyncMaster

[out] A flag specifying whether the video port controls the vertical synchronization of the VGA. TRUE if the port controls the monitor's synchronization; otherwise, FALSE.

Return Values

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

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IVPNotify2::SetVPSyncMaster

IVPNotify2 Interface

Sets the flag specifying the VideoPort as a sync master of the VGA (the vsync of the VGA is controlled by the VideoPort).

HRESULT GetVPSyncMaster(
  BOOL bVPSyncMaster
  ) PURE;

Parameters

bVPSyncMaster

[in] A flag specifying whether the video port controls the vertical synchronization of the VGA. TRUE if the port controls the monitor's synchronization; otherwise, FALSE.

Return Values

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

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