tree 48326ab8c917251930d2ec7fd26df54fffcca067
parent c8d006bec48680390bdf493ca4a02be3e8859bcd
author Yunqing Wang <yunqingwang@google.com> 1549328483 -0800
committer Yunqing Wang <yunqingwang@google.com> 1550003161 +0000

Add a speed feature for smooth intra modes

Added a speed feature for smooth intra modes, and disabled the modes
at speed 3 for non-key frames or (cpi->rc.frames_to_key != 1). This
ensures no quality loss for all key frame encoding.

AWCY test result:
79961baser@2019-02-05T16:14:50.238Z -> 79961ps1@2019-02-05T01:26:38.036Z
  PSNR | PSNR Cb | PSNR Cr | PSNR HVS |    SSIM | MS SSIM | CIEDE 2000
0.0258 |  0.0309 | -0.0355 |  -0.0426 | -0.0429 | -0.0234 |     0.0870
Encoder time reductions at speed 3: 2% to 3.8%.

STATS_CHANGED

Change-Id: Ied9ae786f296c4ef22cb06988ebeeabeb57b8d64