tree d434d58aeccf79a6f7052877dc7520eb09e481a2
parent 173659cd616e5d579ced146558835c272412e3ce
author Apurve Kumar Pandey <apurve.pandey@ittiam.com> 1674450161 +0530
committer Wan-Teh Chang <wtc@google.com> 1675130030 +0000

Speed-up the calculation in av1_set_ssim_rdmult()

In the parent version, geom_mean_of_scale is calculated
in the function av1_set_ssim_rdmult() using log() and exp().
In this CL, geom_mean_of_scale computation is simplified by
avoiding log() and exp() operations.

For AVIF still-image encode,

             Encode Time
cpu-used     Reduction(%)
    6           0.140
    7           0.353
    8           0.131
    9           0.372

STATS_CHANGED possible, but not seen

Change-Id: I935e9a5fd14d43092887e971094669f59047c2d4