713         "min_psnr_dB", test_label_, worst_frame_->psnr, Unit::kUnitless,  in PrintResults()
772   double psnr = -1.0;  in PerformFrameComparison()  local
775     psnr = I420PSNR(&*comparison.reference, &*comparison.render);  in PerformFrameComparison()
781   if (psnr >= 0.0 && (!worst_frame_ || worst_frame_->psnr > psnr)) {  in PerformFrameComparison()
782     worst_frame_.emplace(FrameWithPsnr{psnr, *comparison.render});  in PerformFrameComparison()
789                               comparison.encoded_frame_size, psnr, ssim));  in PerformFrameComparison()
791   if (psnr >= 0.0)  in PerformFrameComparison()
792     psnr_.AddSample(psnr);  in PerformFrameComparison()
889             sample.encoded_frame_size, sample.psnr, sample.ssim);  in PrintSamplesToFile()
984                               double psnr,  in Sample()  argument
992       psnr(psnr),  in Sample()