commit 3861b25be1ac3f7c137e6058f91f8f6c90f4d28e
author Marco <marpan@google.com> Thu Apr 07 17:20:16 2016 -0700
committer Marco <marpan@google.com> Tue Apr 12 10:37:45 2016 -0700
tree 0a57c8039aaf6cc8c88d0622253f152dc9884470
parent 5b3d3b190947fa251ef4d2094f548f463c9cf5d9

vp9: Fix to active_best for GF/ARF in 1 pass vbr.

Correct the setting of Q basis of GF/ARF in 1 pass vbr.

Existing logic would switch to using avg_QP of key frame if
avg_QP of inter is less than active worst (even if key frame is
not last frame).

Instead fix the logic (as per the comment) to use the lower of
active_worst_quality and avg_Q for inter as basis for GF/ARF
active_best_quality (unless last frame was key frame).

Increase in metrics: AvgPSNR/SSIM up by ~0.7/0.3 on ytlive set.

Change-Id: I9a628378ec6684bfda9457ebfc2384ef6d8579f7