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The PreparePerformanceData method sets the m\_trLate and m\_trFrame values of the current frame. |
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CBaseVideoRenderer.PreparePerformanceData method (Renbase.h) |
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4/26/2023 |
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UpdateFrequency5 |
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 PreparePerformanceData method sets the m_trLate and m_trFrame values of the current frame.
void PreparePerformanceData(
int trLate,
int trFrame
);-
trLate
-
Value indicating how late the sample was beyond its due time, in reference time units.
-
trFrame
-
Interframe time, in reference time units.
This method does not return a value.
This member function sets m_trLate to the value of trLate and m_trFrame to the value of trFrame.
When the CBaseVideoRenderer::RecordFrameLateness member function is called from either CBaseVideoRenderer::OnRenderStart or CBaseVideoRenderer::OnDirectRender, it passes the values of m_trLate and m_trFrame for it to update the statistics. PreparePerformanceData is called from CBaseVideoRenderer::OnWaitEnd to set these data member values.
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