tree 591d5e71c056ad6715d9a49c0366878c881a326b
parent ae9203bd08b04a0492360d622d2013afd27e5e7a
author Wan-Teh Chang <wtc@google.com> 1669765339 -0800
committer GitHub <noreply@github.com> 1669765339 -0800
gpgsig -----BEGIN PGP SIGNATURE-----
 
 wsBcBAABCAAQBQJjhpjbCRBK7hj4Ov3rIwAACRIIAITzk28qowENIyxbJIC+lqLu
 uApuVYJcfu1zJbdRr7aLSJs+VLHh8Hwr0uXODyi+UuSh3kz70dnj1Sm+woMZyIgw
 oXIikVn49I1vfyeCaVMED/u3tcWcsLOXnd8aZBoTD//LMRov2KrYVjcIKnNy7+eD
 K/35niAsSM/SDvdqS+iYclJDaLXieaq4RY6lawUbmXheK3Rgb/hAnwxOrTCx/G9r
 qmsDfSVC0r4hpvjkOBcu1Dv1qtR7wnceeqWh4+2En4gyu9gf7VmKq/CgEXaffaJF
 i8u75OnR8Ew8pVlKvGH/fKYRR5zpf1NWQBOAZYcvHcZ+iNNU3JOCrhsrdXMJ/Lo=
 =7dzM
 -----END PGP SIGNATURE-----
 

Add quality and qualityAlpha to avifEncoder

Change the default of minQuantizer and minQuantizerAlpha to
AVIF_QUANTIZER_BEST_QUALITY (0). Change the default of maxQuantizer and
maxQuantizerAlpha to AVIF_QUANTIZER_WORST_QUALITY (63).

The default of quality is based on the average of minQuantizer and
maxQuantizer. Similarly the default of qualityAlpha is based on the
average of minQuantizerAlpha and maxQuantizerAlpha.

Map quality and qualityAlpha in the range of 0..100 linearly to
quantizer values (QP) in the range of 63..0.