Method GetAlignmentSize

Source/DX9VideoProcessor.cpp:1046–1096

}

BOOL CDX9VideoProcessor::GetAlignmentSize(const CMediaType& mt, SIZE& Size)
{
	if ((m_srcDXVA2Format != D3DFMT_UNKNOWN && mt == m_pFilter->m_inputMT) || InitMediaType(&mt)) {
		const auto& FmtParams = GetFmtConvParams(&mt);

		if (FmtParams.cformat == CF_RGB24) {
			Size.cx = ALIGN(Size.cx, 4);
		}
		else if (FmtParams.cformat == CF_RGB48 || FmtParams.cformat == CF_BGR48) {
			Size.cx = ALIGN(Size.cx, 2);
		}
		else if (FmtParams.cformat == CF_BGRA64 || FmtParams.cformat == CF_B64A) {
			// nothing
		}
		else {
			CComPtr<IDirect3DSurface9> pSurface;
			if (m_DXVA2VP.IsReady()) {
				pSurface = m_DXVA2VP.GetNextInputSurface(0, m_CurrentSampleFmt);
			} else {
				pSurface = m_TexSrcVideo.pSurface;
			}

			if (!pSurface) {
				return FALSE;
			}

			INT Pitch = 0;
			D3DLOCKED_RECT lr;
			if (SUCCEEDED(pSurface->LockRect(&lr, nullptr, D3DLOCK_NOSYSLOCK))) { // don't use D3DLOCK_DISCARD here on AMD card
				Pitch = lr.Pitch;
				pSurface->UnlockRect();
			}

			if (!Pitch) {
				return FALSE;
			}

			Size.cx = Pitch / FmtParams.Packsize;
		}

		if (FmtParams.cformat == CF_RGB24 || FmtParams.cformat == CF_XRGB32 || FmtParams.cformat == CF_ARGB32) {
			Size.cy = -abs(Size.cy); // only for biCompression == BI_RGB
		} else {
			Size.cy = abs(Size.cy); // need additional checks
		}

		return TRUE;
	}

	return FALSE;
}

BOOL CDX9VideoProcessor::InitMediaType(const CMediaType* pmt)
{