tree be3dc241b84e6f48b6e9026a366f2fc6e885c8be
parent 4d93222751a26841018179cdaa143f6f20e48977
author Yunqing Wang <yunqingwang@google.com> 1572979335 -0800
committer Yunqing Wang <yunqingwang@google.com> 1572995157 +0000

Enable adaptive_overlay_encoding for speed 2 to 4

Enabled adaptive_overlay_encoding for speed 2, 3, and 4.
This change gave some quality gains as well as encoder
speedups.

Borg test and speedup results.
        avg_psnr: ovr_psnr: ssim:   avg_speedup(whole set)
speed 2:
lowres: -0.129	-0.112	-0.158           0.9%
midres: -0.099	-0.101	-0.162           1.4%

speed 3:
lowres: -0.090	-0.080	-0.160           0.8%
midres: -0.085	-0.083	-0.146           1.3%

speed 4:
lowres: -0.101	-0.092	-0.208           0.7%
midres: -0.054	-0.046	-0.075           0.9%

STATS_CHANGED

Change-Id: I72ba6480f4fbe3d71dee3a25a23d236c4fdda7f5