tree 8dc41c5385304b465a3cd0958122a557f07408cd
parent 5b2df81ea72c27d0560394a431332fad7610bacf
author Sai Deng <sdeng@google.com> 1599085179 -0700
committer Sai Deng <sdeng@google.com> 1599224251 +0000

Speed up VMAF calculations when using libvmaf_rc

by reducing the number of vmaf_context initializations. 4% encoding
time savings in the 1080p test (30f, sp1).

40% User time and 96% Sys time savings compare to encoding with libvmaf.
However the Real time is slower due to multithreading not enabled.

Performance counter stats for './aomenc_old basketballdrive_1080p50.y4m
 --limit=30 -o output --tune=vmaf --cpu-used=1':
libvmaf
     441.762382891 seconds time elapsed
    1422.326568000 seconds user
      51.411417000 seconds sys
libvmaf_rc
     843.705030306 seconds time elapsed
     841.818651000 seconds user
       1.819919000 seconds sys

Change-Id: I5e29aff63ccd3fdfe268ef299b06df5a7126842c