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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 |
|---|---|
|
Group does not have an output pin. |
|
Success. |
|
Invalid argument. |
|
Render engine failed to initialize. |
|
Invalid pointer. |
|
Operation failed because project was not rendered successfully. |
|
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 |
|
| Library |
|
See also