Limit oscilation detection in the case where overshoot is very very
large.
This keeps the 9-bit cost patch from breaking the DownUp reisze test.
The patch pushed us to an 11% undershoot right before a scene cut
causing a 1200% overshoot. (Whereas before we were undershooting by
only 6% before overshooting by 1200%).
Change-Id: Id90ccfab8aba872ccadc45b73b3bb097b895677f
else
cpi->rc.rc_1_frame = 0;
+ // Turn off oscilation detection in the case of massive overshoot.
+ if (cpi->rc.rc_1_frame == -1 && cpi->rc.rc_2_frame == 1 &&
+ correction_factor > 1000) {
+ cpi->rc.rc_2_frame = 0;
+ }
+
if (correction_factor > 102) {
// We are not already at the worst allowable quality
correction_factor = (int)(100 + ((correction_factor - 100) *