UInt64 TEncGOP::xFindDistortionFrame

//計算失真

ruiDist = xFindDistortionFrame(pcPic->getPicYuvOrg(), pcPic->getPicYuvRec(), pcPic->getPicSym()->getSPS().getBitDepths());

UInt64 TEncGOP::xFindDistortionFrame (TComPicYuv* pcPic0, TComPicYuv* pcPic1, const BitDepths &bitDepths)
{
  UInt64  uiTotalDiff = 0;

  for(Int chan=0; chan<pcPic0 ->getNumberValidComponents(); chan++)
  {
    const ComponentID ch=ComponentID(chan);
    Pel*  pSrc0   = pcPic0 ->getAddr(ch);
    Pel*  pSrc1   = pcPic1 ->getAddr(ch);
    UInt  uiShift     = 2 * DISTORTION_PRECISION_ADJUSTMENT(bitDepths.recon[toChannelType(ch)]-8);

    const Int   iStride = pcPic0->getStride(ch);
    const Int   iWidth  = pcPic0->getWidth(ch);
    const Int   iHeight = pcPic0->getHeight(ch);

    for(Int y = 0; y < iHeight; y++ )
    {
      for(Int x = 0; x < iWidth; x++ )
      {
        Intermediate_Int iTemp = pSrc0[x] - pSrc1[x];
        uiTotalDiff += UInt64((iTemp*iTemp) >> uiShift);
      }
      pSrc0 += iStride;
      pSrc1 += iStride;
    }
  }