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| author | 2016-09-12 10:34:53 +0800 | |
|---|---|---|
| committer | 2016-09-18 09:33:39 +0800 | |
| commit | 9d8f51cbae05135848bea4b9b4b41793ae126e28 (patch) | |
| tree | 5469e647ef589e2abad88495652473b59c7c522e /libs/hwui/ProgramCache.cpp | |
| parent | f7c508ae09ad9dce600af23572d3d618c9ff8475 (diff) | |
fix wrong algorithm in WifiPowerPerPacket()
step1: PowerProfile.POWER_WIFI_ACTIVE represents energy consumption(mAh) per hour
devied by 3600, then WIFI_POWER ==> energy consumption(mAh) per second
step2: WIFI_BPS represents 1000000 bit per second
then (double)WIFI_BPS) / 8 ==> 1000000/8 Byte per second
step3: as upload and download, so divided by 2;
then (((double)WIFI_BPS) / 8 / 2048)) ==> 1000000/8/2048 KB per second
==> packet per second (where 1 packet = 2 KB)
so WIFI_POWER / (((double)WIFI_BPS) / 8 / 2048) represents mAh per Packet where 1 packet = 2 K.
when divided by (60*60) again , that make WifiPowerEstimator narrow 3600 times.
Change-Id: Ic055a5145b6dfb1129c8969826329a3024c9e2b6
Signed-off-by: yuanhuihui <yuanhuihui@xiaomi.com>
Diffstat (limited to 'libs/hwui/ProgramCache.cpp')
0 files changed, 0 insertions, 0 deletions