CBaseRenderer.WaitForRenderTime 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 WaitForRenderTime method waits for the current sample's presentation time.
Syntax
virtual HRESULT WaitForRenderTime();
Parameters
This method has no parameters.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
The filter state changed before the presentation time arrived. |
Remarks
This method waits until one of the following occurs:
- The sample's presentation time arrives, at which point the sample can be rendered.
- The filter stops or begins flushing data.
If the presentation time arrives, the CBaseRenderer::m_RenderEvent event is signaled. If the state changes, the CBaseRenderer::m_ThreadSignal event is signaled. This method waits on both events. The derived class can override this method to wait on additional events, if necessary.
This method calls the CBaseRenderer::OnWaitStart method when the wait begins, and the CBaseRenderer::OnWaitEnd method when the wait is done. Neither method does anything in the base class, but the derived class can override them.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|