tree ff46b1ab430b61a2f8bd473a2d52a105ae2dfb56
parent 1e5867aeed3e9fa9147368bb3e1127e7705d11ba
author Lin Zheng <linzhen@google.com> 1685580589 +0000
committer Urvang Joshi <urvang@google.com> 1685580589 +0000

CWG-D047 Add by-pass check in deblocking strength decision

It's an encoder side bug fix in function av1_pick_filter_level(), where
it missed the by-pass check (no deblocking) during rdcost comparisons.

The bug fix could potentially save bits signalling when no deblocking
case wins. The bdrate gain on a4 and a5 testsets are as below:

| Testset  | avg_psnr  |  ovr_psnr  |  ssim   |    vmaf |
| ------ | ------ | ------ | ------ | ------ |
|   a4     |  -0.146    |  -0.192    |  -0.098   |  -0.011 |
|   a5     |  -0.078    |  -0.060	 | -0.058   |   0.006 |