Method InitMediaType

Source/DX9VideoProcessor.cpp:1098–1269

}

BOOL CDX9VideoProcessor::InitMediaType(const CMediaType* pmt)
{
	DLog(L"CDX9VideoProcessor::InitMediaType()");

	if (!VerifyMediaType(pmt)) {
		return FALSE;
	}

	ReleaseVP();

	auto FmtParams = GetFmtConvParams(pmt);

	const BITMAPINFOHEADER* pBIH = nullptr;
	m_decExFmt.value = 0;

	if (pmt->formattype == FORMAT_VideoInfo2) {
		const VIDEOINFOHEADER2* vih2 = (VIDEOINFOHEADER2*)pmt->pbFormat;
		pBIH = &vih2->bmiHeader;
		m_srcRect = vih2->rcSource;
		m_srcAspectRatioX = vih2->dwPictAspectRatioX;
		m_srcAspectRatioY = vih2->dwPictAspectRatioY;
		if (FmtParams.CSType == CS_YUV && (vih2->dwControlFlags & (AMCONTROL_USED | AMCONTROL_COLORINFO_PRESENT))) {
			m_decExFmt.value = vih2->dwControlFlags;
			m_decExFmt.SampleFormat = AMCONTROL_USED | AMCONTROL_COLORINFO_PRESENT; // ignore other flags
		}
		m_bInterlaced = (vih2->dwInterlaceFlags & AMINTERLACE_IsInterlaced);
		m_rtAvgTimePerFrame = vih2->AvgTimePerFrame;
	}
	else if (pmt->formattype == FORMAT_VideoInfo) {
		const VIDEOINFOHEADER* vih = (VIDEOINFOHEADER*)pmt->pbFormat;
		pBIH = &vih->bmiHeader;
		m_srcRect = vih->rcSource;
		m_srcAspectRatioX = 0;
		m_srcAspectRatioY = 0;
		m_bInterlaced = 0;
		m_rtAvgTimePerFrame = vih->AvgTimePerFrame;
	}
	else {
		return FALSE;
	}

	m_pFilter->m_FrameStats.SetStartFrameDuration(m_rtAvgTimePerFrame);
	m_pFilter->m_bValidBuffer = false;

	UINT biWidth  = pBIH->biWidth;
	UINT biHeight = labs(pBIH->biHeight);

	m_srcLines = biHeight * FmtParams.PitchCoeff / 2;
	m_srcPitch = biWidth * FmtParams.Packsize;
	switch (FmtParams.cformat) {
	case CF_Y8:
	case CF_NV12:
	case CF_RGB24:
	case CF_BGR48:
		m_srcPitch = ALIGN(m_srcPitch, 4);
		break;
	case CF_V210:
		m_srcPitch = ALIGN((biWidth + 5) / 6 * 16, 128);