tree b3256d9d033b3d683ee55bad0da37ddce435321f
parent 31d4547d95256c26816d6aae55a1b99ba7c70eff
author Deepa K G <deepa.kg@ittiam.com> 1619591060 +0530
committer Yunqing Wang <yunqingwang@google.com> 1621521947 +0000

Skip motion search w.r.t. third reference in firstpass

The stats based on motion search w.r.t third reference
frame in the first pass is required in the ML model
which predicts if a flat GOP structure (golden-frame
only structure without ALT-REF and Internal-ARFs) is
better. As the ML model is enabled only for constant
quality mode under certain conditions, motion search
w.r.t third reference frame is enabled only for those
cases and disabled for others.

           Instruction Count
cpu-used      Reduction(%)
   3              0.41
   4              0.60
   5              0.91
   6              1.21

Change-Id: I73aff59ed4ce55104fc6cafa6331e40579b6ec42