tree b1f630b757cc22bbbe022ad6bda78ba864b067a4
parent bdb99407a9915e7856b7c47ed64f86813ff0be34
author Rachel Barker <rachelbarker@google.com> 1673537999 +0000
committer Rachel Barker <rachelbarker@google.com> 1674155720 +0000

Overhaul disflow algorithm

This patch applies a huge amount of bugfixes and optimizations to the
disflow algorithm in the flow estimation library. The new version of
this code generates better results than the current corner matching
code, while being many times faster.

This patch also includes an SSE4.1 implementation of
aom_compute_flow_at_point, which contains the hottest parts
of the algorithm.

This code is not enabled yet, so this patch has no BDRATE or encode
time impact. A future patch will enable this code, and will re-tune
all global motion related speed features around it.

Change-Id: Ib8fb933a595c7e36d046ef0fd599bcf2cd99839d