YUV转RGB方法二

bool CYuvToRgb::Yuv422ToRgb (){ unsigned long col,row; double Y,U,V; double red,blue,green;

 for (row=0; row<m_Height; row++) {  int idx=((m_Height-row-1)*3)*m_Width;  int rowptr=row*m_Width;

  for (col=0; col<m_Width; col++)  {   int colhalf=col>>1;   Y=m_pYuvBuf[rowptr+col];   U=m_pYuvBuf[rowptr+colhalf+m_Width*m_Height-row*m_Width/2];   V=m_pYuvBuf[rowptr+colhalf+m_Width*m_Height-row*m_Width/2+m_Width*m_Height/2];

   red=(Y+(U-128)*1.4022)+0.5;   green=(Y-(U-128)*0.3456-(V-128)*0.7145)+0.5;   blue=(Y+(V-128)*1.7710)+0.5;

   if (red>255) red=255;   else if (red<0) red=0;   if (green>255) green=255;   else if (green<0) green=0;   if (blue>255) blue=255;   else if (blue<0) blue=0;

   m_pRgbBuf[idx++]=(char)red;   m_pRgbBuf[idx++]=(char)green;   m_pRgbBuf[idx++]=(char)blue;  } } return true;}