MF_SOURCE_READER_DISABLE_DXVA attribute
Specifies whether the Source Reader enables DirectX Video Acceleration (DXVA) on the video decoder.
Data type
UINT32
Get/set
To get this attribute, call IMFAttributes::GetUINT32.
To set this attribute, call IMFAttributes::SetUINT32.
Remarks
This attribute applies if the following conditions are true:
- The source reader decodes a video stream.
- The video decoder supports DXVA decoding.
- The application uses the MF_SOURCE_READER_D3D_MANAGER attribute to set the Direct3D Device Manager on the source reader.
This attribute enables the application to disable DXVA while still decoding to Direct3D surfaces.
By default, the source reader uses the Direct3D Device Manager for two purposes:
- To enable DXVA decoding in the video decoder.
- To allocate Direct3D surfaces for the video samples.
If the value of the MF_SOURCE_READER_DISABLE_DXVA attribute is TRUE, the source reader does disables DXVA decoding, although it still uses the Direct3D Device Manager to allocate Direct3D surfaces.
If the MF_SOURCE_READER_D3D_MANAGER attribute is not set, the MF_SOURCE_READER_DISABLE_DXVA attribute is ignored.
The default value of this attribute is FALSE, meaning that DXVA decoding is enabled when available.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 7 [desktop apps | UWP apps] |
| Minimum supported server |
Windows Server 2008 R2 [desktop apps | UWP apps] |
| Header |
|
See also