ISeekingPassThru Interface

The ISeekingPassThru interface is exposed on video renderer filters. It has only one method, Init, which you use to instantiate and initialize a CRendererPosPassThru object. Use this object to keep track of reference times and stream times. The IMediaSeeking and IMediaPosition interfaces can use these times to seek to various places in multimedia files.

Implement this interface when you write a video renderer filter that needs to keep track of reference time and stream time.

Use this interface in your application when you want to create a CRendererPosPassThru class object.

Methods in Vtable Order

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

ISeekingPassThru methods Description

Init Initializes a CRendererPosPassThru renderer-seeking object.

IUnknown methods	Description
QueryInterface	Retrieves pointers to supported interfaces.
AddRef	Increments the reference count.
Release	Decrements the reference count.
ISeekingPassThru methods	Description
Init	Initializes a CRendererPosPassThru renderer-seeking object.

ISeekingPassThru::Init

ISeekingPassThru Interface

Initializes a CRendererPosPassThru renderer-seeking object.

Syntax

HRESULT Init(
  BOOL bSupportRendering,
  IPin *pPin
  );

Parameters

bSupportRendering
[in] Value indicating whether the pin specified in pPin is a renderer pin. TRUE indicates it is; FALSE indicates it is not.
pPin
[in] Pointer to the filter's input pin.

Return Value

Returns an HRESULT value that depends on the implementation of the interface. Current Microsoft® DirectShow® implementation return values include the following:

E_FAIL Failed to create and initialize a CRendererPosPassThru object.
E_OUTOFMEMORY Not enough memory to create the object.
NOERROR Successfully created and initialized a CRendererPosPassThru object.

Remarks

This method instantiates and initializes a CRendererPosPassThru object.

E_FAIL	Failed to create and initialize a CRendererPosPassThru object.
E_OUTOFMEMORY	Not enough memory to create the object.
NOERROR	Successfully created and initialized a CRendererPosPassThru object.