tree ed11af7541b30bfbd12c6c835b6c2265858170a9
parent 11cda363ddad75bb8474c16558a98d2dbf35e617
author Jingning Han <jingning@google.com> 1623913859 -0700
committer Jingning Han <jingning@google.com> 1624042700 +0000

Simplify first frame type assignment

Simplify the frame type assignment for the first frame in a group
of pictures. Remove redundant assumptions and operations on the
frame types.

BUG=aomedia:3079

Change-Id: Ic0e0d1ad234b1d5867c9209ccf2f6c05f619fe96