Yaowu Xu
47ac3ea0bb
Adapt color sensitiviy threshold to luma signal energy
...
Instead using only a fixed threshold, this commit adapts the threshold
for color sensitivity decision to luma signal energy: chroma channel's
sse is at least 1/6 of that in luma for color sensitivity flag to be
set to active.
This recoups a large portion of the speed loss due to accounting for
chroma component costs in RTC mode decision.
Change-Id: Ie01f747f6037dba6a1d1ed3e10b71a0ef1abc42c
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