void ACSequentialScan::StartOptimizeScan(class BufferCtrl *)
{  
  JPG_THROW(NOT_IMPLEMENTED,"ACSequentialScan::StartOptimizeScan",
            "Rate-distortion optimization is not implemented for arithmetic coding");
}
void ACSequentialScan::StartOptimizeScan(class BufferCtrl *)
{  
  JPG_THROW(NOT_IMPLEMENTED,"ACSequentialScan::StartOptimizeScan",
            "Rate-distortion optimization is not implemented for arithmetic coding");
}