Lines Matching refs:JDCT_IFAST

964                 JDCT_IFAST: faster, less accurate integer method
967                 JDCT_FASTEST: fastest method (normally JDCT_IFAST)
968         In libjpeg-turbo, JDCT_IFAST is generally about 5-15% faster than
973         quality levels above 90, however, the difference between JDCT_IFAST and
975         JDCT_IFAST incurs generally about a 1-3 dB loss (in PSNR) relative to
977         JDCT_IFAST with quality levels above 97.  The algorithm often
980         libjpeg-turbo, JDCT_IFAST is not fully accelerated for quality levels
1265                 JDCT_IFAST: faster, less accurate integer method
1268                 JDCT_FASTEST: fastest method (normally JDCT_IFAST)
1269         In libjpeg-turbo, JDCT_IFAST is generally about 5-15% faster than
1276         between JDCT_IFAST and JDCT_ISLOW becomes more pronounced.  With images
1277         compressed using quality=97, for instance, JDCT_IFAST incurs generally
1279         larger for some images.  If you can avoid it, do not use JDCT_IFAST