CBaseVideoRenderer.PreparePerformanceData 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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 PreparePerformanceData method sets the m_trLate and m_trFrame values of the current frame.

Syntax

void PreparePerformanceData(
   int trLate,
   int trFrame
);

Parameters

trLate

Value indicating how late the sample was beyond its due time, in reference time units.

trFrame

Interframe time, in reference time units.

Return value

This method does not return a value.

Remarks

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.

Requirements

See also

CBaseVideoRenderer Class