IAMVideoAcceleratorNotify::SetUncompSurfacesInfo method (videoacc.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 SetUncompSurfacesInfo method notifies the decoder of how many uncompressed surfaces were created.
Syntax
HRESULT SetUncompSurfacesInfo(
[in] DWORD dwActualUncompSurfacesAllocated
);
Parameters
[in] dwActualUncompSurfacesAllocated
The number of surfaces allocated.
Return value
Returns an HRESULT value that depends on the implementation of the interface. HRESULT can include one of the following standard constants, or other values not listed.
| Return code | Description |
|---|---|
|
Failure. |
|
Argument is invalid. |
|
Method is not supported. |
|
NULL pointer argument. |
|
Success. |
Remarks
The video renderer calls this method after it allocates uncompressed surfaces for video decoding.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | videoacc.h |
| Library | Strmiids.lib |