tree 59485badf74b449b6d2bb50fe2c90681e3516fc5
parent 199c79569a00d2e214b4a3c149d6941d3c68b6fe
author Aniket Wanare <Aniket.wanare@ittiam.com> 1626066615 +0530
committer Chi Yo Tsai <chiyotsai@google.com> 1626892134 +0000

Extend prune_luma_palette_size_search_level sf to speed >= 3

Extended the speed feature prune_luma_palette_size_search_level to
speed >= 3 with an aggressive header rdcost based breakout.

For allintra video encode (on screen content set),

          Instruction Count       BD-Rate Loss(%)
cpu-used     Reduction(%)   avg.psnr  ovr.psnr  ssim
   3           2.305        0.0302    0.0313    0.0800
   4           1.842       -0.0287   -0.0283   -0.3707
   5           2.687        0.0155    0.0160    0.0132
   6           2.042        0.0071    0.0076    0.0097
   7           2.050        0.0211    0.0210    0.1402
   8           1.442       -0.0015   -0.0007    0.0010

For AVIF still image encode,

          Instruction Count    BD-Rate Loss(%)
cpu-used     Reduction(%)      psnr       ssim
   3            0.933          0.0004    -0.0008
   4            0.886          0.0009     0.0011
   5            1.031          0.0004     0.0028
   6            1.068          0.0002     0.0000
   7            1.196          0.0000     0.0000
   8            0.180          0.0000     0.0000

BUG=aomedia:3096

STATS_CHANGED

Change-Id: Ib0172c97942733fb94a75c9bd7f3c6e845e08dd4