tree 021dc0e4e1255d7b93adf5dfd4b8cc9e53ad9286
parent 9ff90504c7aaa9ae57984c21858193715e58683d
author Peng Bin <binpengsmail@gmail.com> 1535614647 +0800
committer Yunqing Wang <yunqingwang@google.com> 1536078683 +0000

Introduce speed feature reuse_inter_intra_mode

The inter intra modes of a block may search 4 times,
once for each of 4 single ref modes. The search
results very likely are the same. So we can save the
search result after the first search, and reuse it
later.
This feature is controled by sf.reuse_inter_intra_mode.
Enabled at speed level 1 and above.

For encoder, about 1.7% faster shows by encoding
20 frame of BasketballDrill_832x480_50.y4m at 800kbps
on speed 1. ( 215670 ms -> 211931 ms)
The coding performance is 0.01% loss on average.

STATS_CHANGED expected

Change-Id: I5a610ef07007c6c605c71b9487426a46b790bc5e