tree be8ced8fd12759a2539cfbd06efb7fce60cd44b4
parent da6f4bc0beacce6ac5892b5d127f01077805971f
author sdeng <sdeng@google.com> 1578952694 -0800
committer Sai Deng <sdeng@google.com> 1579109068 +0000

Speed up VMAF calculations for VMAF RDO tuning

Test perf stat -e instructions:u ./aomenc red_kayak_480p.y4m
 --limit=30 -o output --tune=vmaf_without_preprocessing --cpu-used=1

VMAF baseline
 1,302,547,677,300      instructions:u
     233.921052058 seconds time elapsed
     219.757056000 seconds user
      75.185427000 seconds sys

PSNR baseline
   692,598,329,226      instructions:u
      91.892158067 seconds time elapsed
      91.697262000 seconds user
       0.184010000 seconds sys

New VMAF
 1,276,643,191,938      instructions:u
      88.573175585 seconds time elapsed
     218.622893000 seconds user
       2.224477000 seconds sys

Change-Id: I6d2815a9443ef1d1a157a225a3a6644809acd5f8