nx_jpeg_ycbcr_test.nx

nx_jpeg_ycbcr_test.nx -- KAT for YCbCr -> RGB conversion. Canonical reference points from JFIF v1.02: (Y= 0, Cb=128, Cr=128) -> black (R=0, G=0, B=0) (Y=255, Cb=128, Cr=128) -> white (R=255, G=255, B=255) (Y=128, Cb=128, Cr=128) -> mid grey (R=128, G=128, B=128) (Y= 76, Cb= 85, Cr=255) -> pure red (R=~255, G=~0, B=~0) (Y=150, Cb= 44, Cr= 21) -> pure green (R=~0, G=~255, B=~0) (Y= 29, Cb=255, Cr=107) -> pure blue (R=~0, G=~0, B=~255) JPEG conversion is approximate (Rec 601 coefficients + fixed-point rounding) so we allow +/- 2 ULP tolerance on the pure-colour cases. expect_exit: 0 license_tier: ORIGINAL