CTransformOutputPin.GetMediaType 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
The GetMediaType method retrieves a preferred media type, by index value.
Syntax
HRESULT GetMediaType(
int iPosition,
CMediaType *pMediaType
);
Parameters
-
iPosition
-
Zero-based index value.
-
pMediaType
-
Pointer to a CMediaType object that receives the media type.
Return value
Returns an HRESULT value. Possible values include those shown in the following table.
| Return code | Description |
|---|---|
|
Success |
|
Index out of range |
Remarks
This method overrides the CBasePin::GetMediaType method. If the filter's input pin is not connected, the method returns VFW_S_NO_MORE_ITEMS. Otherwise, it calls the filter's CTransformFilter::GetMediaType method to retrieve the media type. The CTransformFilter::GetMediaType method is pure virtual; the filter's derived class must override it.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|