IRenderEngine::GetGroupOutputPin method

[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]

Note

[Deprecated. This API may be removed from future releases of Windows.]

 

The GetGroupOutputPin method retrieves the output pin for the specified group.

Syntax

HRESULT GetGroupOutputPin(
        long Group,
  [out] IPin **ppRenderPin
);

Parameters

Group

Zero-based index that specifies the group.

ppRenderPin [out]

Receives a pointer to the output pin's IPin interface.

Return value

Returns an HRESULT value. Possible values include the following:

Return code	Description
S_FALSE	Group does not have an output pin.
S_OK	Success.
E_INVALIDARG	Invalid argument.
E_MUST_INIT_RENDERER	Render engine failed to initialize.
E_POINTER	Invalid pointer.
E_RENDER_ENGINE_IS_BROKEN	Operation failed because project was not rendered successfully.
E_UNEXPECTED	Unexpected error.

 

Remarks

Before calling this method, call IRenderEngine::ConnectFrontEnd to build the front end of the graph. Each group represents a single media stream, and the front end has a corresponding output pin.

You can use this method to create the rendering portion of a file-writing graph. Connect the output pins to multiplexer filters and file writer filters. For more information, see Rendering a Project.

For preview, you don't need to call this method. Just call ConnectFrontEnd followed by IRenderEngine::RenderOutputPins.

If the method returns S_OK, the IPin interface that it returns has an outstanding reference count. Be sure to release the interface when you are finished using it.

Note

The header file Qedit.h is not compatible with Direct3D headers later than version 7.

 

Note

To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.

 

Requirements

Requirement	Value
Header	Qedit.h
Library	Strmiids.lib

See also

IRenderEngine Interface

Error and Success Codes