Method ProcessSample

Source/DX11VideoProcessor.cpp:2143–2200

}

HRESULT CDX11VideoProcessor::ProcessSample(IMediaSample* pSample)
{
	REFERENCE_TIME rtStart, rtEnd;
	if (FAILED(pSample->GetTime(&rtStart, &rtEnd))) {
		rtStart = m_pFilter->m_FrameStats.GeTimestamp();
	}
	const REFERENCE_TIME rtFrameDur = m_pFilter->m_FrameStats.GetAverageFrameDuration();
	rtEnd = rtStart + rtFrameDur;

	m_rtStart = rtStart;
	CRefTime rtClock(rtStart);

	HRESULT hr = CopySample(pSample);
	if (FAILED(hr)) {
		m_RenderStats.failed++;
		return hr;
	}

	// always Render(1) a frame after CopySample()
	hr = Render(1, rtStart);
	m_pFilter->m_DrawStats.Add(GetPreciseTick());
	if (m_pFilter->m_filterState == State_Running) {
		m_pFilter->StreamTime(rtClock);
	}

	m_RenderStats.syncoffset = rtClock - rtStart;

	int so = (int)std::clamp(m_RenderStats.syncoffset, -UNITS, UNITS);
#if SYNC_OFFSET_EX
	m_SyncDevs.Add(so - m_Syncs.Last());
#endif
	m_Syncs.Add(so);

	if (m_bDoubleFrames) {
		if (rtEnd < rtClock) {
			m_RenderStats.dropped2++;
			return S_FALSE; // skip frame
		}

		rtStart += rtFrameDur / 2;

		hr = Render(2, rtStart);
		m_pFilter->m_DrawStats.Add(GetPreciseTick());
		if (m_pFilter->m_filterState == State_Running) {
			m_pFilter->StreamTime(rtClock);
		}

		m_RenderStats.syncoffset = rtClock - rtStart;

		so = (int)std::clamp(m_RenderStats.syncoffset, -UNITS, UNITS);
#if SYNC_OFFSET_EX
		m_SyncDevs.Add(so - m_Syncs.Last());
#endif
		m_Syncs.Add(so);
	}

	return hr;
}