commit 8de6abafffc9474ed62ec512ae2ab91f5f8c92c9
author Fyodor Kyslov <kyslov@google.com> Wed Feb 24 21:35:12 2021 -0800
committer Fyodor Kyslov <kyslov@google.com> Thu Feb 25 18:23:03 2021 +0000
tree de489aae91768e3bb416f5d9e4275c5dfbc2beb1
parent 8268a65b90b6eea240c0f2197133110623db0108

AV1 RT: Fix speed 6 quality degradation on mid res

Shifting thresholds for noisy content resulted in 3% quality degradation
on mid res rtc content on speed 6. Limiting the threshold adjustment for
nonRD case only.
3.1% BDRate improvement on speed 6 midres. Neutral BDRate on speed 6
rtc_derf set. No change on higher speeds

Change-Id: I40eff759294c28c18b83d7aabbe543f881d829df

av1/encoder/var_based_part.c

diff --git a/av1/encoder/var_based_part.c b/av1/encoder/var_based_part.c
index 025e125..83a1f30 100644
--- a/av1/encoder/var_based_part.c
+++ b/av1/encoder/var_based_part.c
@@ -1021,7 +1021,8 @@
           (max_var_32x32[m] - min_var_32x32[m]) > 3 * (thresholds[1] >> 3) &&
           max_var_32x32[m] > thresholds[1] >> 1 &&
           (noise_level >= kMedium || cpi->use_svc ||
-           cpi->sf.rt_sf.force_large_partition_blocks)) {
+           cpi->sf.rt_sf.force_large_partition_blocks ||
+           !cpi->sf.rt_sf.use_nonrd_pick_mode)) {
         force_split[1 + m] = 1;
         force_split[0] = 1;
       }