tree ebfd1b9738126be4117ea20f529a2bd4e51b06ab
parent a65d2ced5888cf786445e667e862ed42b6f2c32e
author venkat sanampudi <sanampudi.venkatarao@ittiam.com> 1614358762 +0530
committer Wan-Teh Chang <wtc@google.com> 1615851018 +0000

Prune chroma intra modes for all intra encoding

Chroma intra modes are pruned based on luma intra mode winner.
This optimization is enabled for speed presets >= 4.

For AVIF still image encode,

          Instruction Count               BD-Rate Loss(%)
cpu-used     Reduction(%)    avg.psnr  avg.psnrCb  avg.psnrCr  ssim
   4           4.965         0.1207    0.1904      0.4794      0.1527
   5           4.362         0.1294    0.5258      0.4526      0.1214
   6           7.140         0.1151    0.2046      0.2888      0.1631

BUG=aomedia:2959

STATS_CHANGED

Change-Id: Ie5d3d39524c04e8c2ce22a49c262b7c5e9d0bf8d