IPictureMixer2::UseExtraBuffer2
From MediaLooks Knowledge Base
The UseExtraBuffer2 method of the IPictureMixer2 interface is used to enable/disable priview (if supported).
Contents |
Syntax
HRESULT UseExtraBuffer2([in] BOOL _bUse);
Parameters
| Name | Description | |
| _bUse | [in] The flag that shows the method whether to enable or disable extra buffering. |
Return Values
| Return code | Description |
| S_OK | Success. |
| E_OUTOFMEMORY | Insufficient memory. |
| E_POINTER | Null pointer argument. |
Remarks
If extra buffering is disabled, mixing is performed in downstream filter allocator, which may cause performance problems with video memory used.
Extra buffering is useful with a connection to Video Renderer and is required for calls to the SetOutpuRect method.
